• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    One aspect of the invention relates to a device for holding (10) a cooling tube (TU1) for a turbojet casing, said holding device being characterized in that it comprises: a first plate (PL1) adapted to be arranged in integral contact with a turbojet casing (20); a second plate (PL2), the first and second plates (PL1, PL2) having between them a spacing; - a first spacer (EN1) and a second spacer (EN2) arranged between the first plate (PL1) and the second plate (PL2) and defining the spacing between the first and second plates (PL1, PL2), the first and second spacers having between them a spacing adapted for the passage of the cooling tube (TU1).
    公开号:FR3021700A1
    申请号:FR1454790
    申请日:2014-05-27
    公开日:2015-12-04
    发明作者:Sebastien Jean Laurent Prestel；Baptiste Jouy
    申请人:SNECMA SAS；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The technical field of the invention is, in a general manner, that of aircraft engines, and more particularly that of the cooling of different types of aircraft. elements, including low pressure turbine casings, engines considered. One aspect of the present invention relates to a device for maintaining a cooling tube for a turbojet engine casing, or a plurality of cooling tubes for a turbojet casing. BACKGROUND OF THE INVENTION To ensure the cooling of certain low pressure turbine casings, a cooling device is provided which involves a set of cooling tubes arranged outside the casing, usually by surrounding said casing. , so that air is sent to the outer face of the casing considered. The cooling tubes are typically powered by several boxes, for example by two boxes or four boxes. In the case where the cooling tubes are powered by two housings, the latter are typically arranged on either side of the casing in question, so that each box supplies air cooling tubes surrounding the housing concerned about a quarter of its lateral circumference. This is called LPTCC system (Low Pressure Turbine Clearance Control in English, for gaming control for low pressure turbine). The LPTCC system may be controlled by the Full Authority Digital Engine Control (FADEC), which refers to a full authority digital engine controller for an aircraft engine; this is called active control, and the system is designated by the acronym LPTACC. When not controlled by the FADEC, it is called passive control for the LPTCC system. Its main function is to regulate the clearance of the low pressure turbine by modulating the flow of air taken from the secondary flow for the cooling of the low pressure turbine casing.
    [0002] 3021700 2 The cooling tubes, and in particular those of the LPTCC systems, are secured by means of the feed boxes with the external face of the casing which they must cool. It is also necessary to ensure proper positioning of the cooling tubes acting on the housing, especially at the most remote locations of the power boxes; for this purpose, it is provided in the state of the art the use of a fixing plate which consists of a flat sheet under which are fixed clamps, said collars surrounding the cooling tubes, allowing the holding in position of said tubes.
    [0003] FIGS. 1a shows a first perspective view of a cooling device 1 for a turbojet casing according to the state of the art. FIG. 1a thus shows: a turbojet casing 2; the cooling device 1 for said turbojet casing 2, the cooling device 1 comprising: a plurality of cooling tubes 3; o a box 4 for supplying air to the plurality of cooling tubes 3; a plurality of fixing plates 5 for holding the plurality of cooling tubes 3 in position. FIG. 1b shows a second perspective view of the cooling device 1 for a turbojet casing according to the state of the art. In particular, FIG. 1b shows a fastening plate 5 under which a plurality of collars 6 attaches, each collar 6 surrounding a cooling tube 3.
    [0004] Such a solution does not always ensure a correct positioning of the cooling device relative to the housing. There is thus typically axial and / or radial misalignments of the cooling tubes of the cooling device relative to the housing. FIG. 2a schematically illustrates an example of correct positioning of a cooling tube 3 of the cooling device 1 for a turbojet casing, with respect to the turbojet casing 2. In this example: 3021700 3 - the axial positioning, in an axial direction Ax, of the cooling tube is correct, the cooling tube 3 being aligned with a hook 7 of the casing 2, and - the radial positioning, in a radial direction Rad , the cooling tube is correct, the radial distance between the cooling tube 3 and the housing 2 being controlled. FIG. 2b schematically illustrates a first example of incorrect positioning of the cooling tube 3 with respect to the turbojet casing 2, in which said cooling tube 3 is in contact with said casing 2. FIG. 2c schematically illustrates a second example of positioning incorrectly of the cooling tube 3 with respect to the turbojet casing 2, in which said cooling tube 3 is this time very far from said casing 2. Finally, FIG. 2 d schematically illustrates a third example of incorrect positioning of the cooling tube 3 in relation to to the casing 2 of 15 turbojet, wherein said cooling tube 3 is misaligned with respect to a hook 7 of said casing 2. SUMMARY OF THE INVENTION The invention offers a solution to the problems mentioned above, in particular by proposing a holding device of a cooling tube for a turbojet casing, the holding device p making it possible to reduce any axial or lateral misalignments of the cooling tube with respect to the turbojet casing.
    [0005] An aspect of the invention thus relates to a device for holding a cooling tube for a turbojet engine casing, said holding device comprising: a first plate adapted to be arranged in integral contact with a turbojet casing; A second plate, the first and second plates having between them a spacing; a first spacer and a second spacer arranged between the first plate and the second plate and defining the spacing between the first and second plates, the first and second spacers having between them a spacing adapted for the passage of the cooling tube.
    [0006] In the present description, the turbojet casing typically having a casing body and at least one lateral flange, the term "the first plate is arranged in integral contact with the turbojet casing" the fact that a significant part of said first platen is in contact with the casing body, and said first platen is fixed with respect to said casing. By "non-negligible part" is meant more than one-third of said first stage. The holding device according to one aspect of the invention advantageously comprises, with respect to the state of the art, a limited number of intermediate pieces, which makes it possible to minimize the accumulation of tolerances related to each intermediate piece. Thanks to the first and second spacers of the holding device according to one aspect of the invention, the positioning of the cooling tube relative to the housing is advantageously controlled and optimized: the first and second spacers define the spacing between the first and second plates and allow optimal clamping without damaging the cooling tube. The holding device according to one aspect of the invention makes it possible in particular to avoid possible axial or radial misalignments of the cooling tube relative to the housing, and thus to obtain a compact system while ensuring the absence of contact between the cooling pipe and the turbojet casing. In addition to the features that have just been mentioned in the preceding paragraph, the holding device according to the invention may have one or more additional characteristics among the following, taken individually or in any technically possible combination: the first plate comprises a first channel adapted for positioning the cooling tube against the first plate. The first channel advantageously facilitates and controls the positioning of the cooling tube against the first plate, and thus contribute to precisely control the position of the cooling tube relative to the housing. 5 - The second plate advantageously comprises a second channel adapted for positioning the cooling tube against the second plate. The second channel advantageously facilitates and controls the positioning of the second plate against the cooling tube, and contribute to precisely control the position of the cooling tube 10 relative to the housing. According to an alternative combining the two preceding characteristics, the second plate advantageously comprises the first channel adapted for positioning the cooling tube against the first plate, and the second channel adapted for positioning the cooling tube against the second plate. - The holding device comprises a buffer adapted for damping the contact between the cooling tube on the one hand, and the first plate 20 on the other hand. The buffer advantageously makes it possible, by damping the contact and the friction between the cooling tube and the first plate, to contribute to limiting the wear of the cooling tube and the first plate. In this case, the buffer advantageously comprises a first part arranged on the first plate. The holding device comprises a buffer adapted for damping the contact between the cooling tube on the one hand and the second platinum on the other hand. The buffer advantageously makes it possible, by damping the contact and the friction between the cooling tube and the second, to contribute to limiting the wear of the cooling tube and the second plate. In this case, the buffer advantageously comprises a second portion arranged on the second plate. Alternatively, the holding device comprises a buffer adapted for the damping of the contact between the cooling tube on the one hand and the first plate and the second plate on the other hand. In this case, the buffer advantageously comprises: the first part arranged on the first plate, and the second part arranged on the second plate. - The first plate has a first lateral tongue and a second lateral tongue, the first and second lateral tongues being adapted for positioning the first plate on the turbojet casing 15. - The holding device comprises: solidarisant o a first connecting means of a first type first spacer to the first plate, and securing 20 o a second connecting means of the first type second spacer to the first plate. The first connecting means of the first type is advantageously a controlled clamping element which passes through the first plate on the one hand, and at least a part of the first spacer on the other hand, and the second connecting means of the first type. is advantageously a controlled clamping element which passes through the first plate on the one hand, and at least a portion of the second spacer on the other hand. Alternatively, the first plate, the first spacer and the second spacer form a single piece. - The holding device comprises: a first connecting means of a second type solidarisant the first spacer to the second plate, and 3021700 7 o second connecting means of the second type solidarisant the second spacer to the second plate. The first connecting means of the second type is advantageously a controlled clamping element which passes through the second plate on the one hand, and at least a part of the first spacer on the other hand, and the second connecting means of the second type. is advantageously a controlled clamping element which passes through the second plate on the one hand, and at least a portion of the second spacer on the other. The second plate comprises: a first oblong hole for mounting the first connecting means of the second type, and a second oblong hole for mounting the second connecting means of the second type. - Alternatively, the second plate, the first spacer and the second spacer form a single piece. 20 - The first plate, the first spacer, the second spacer and the second plate form a single piece. Another aspect of the invention relates to a cooling device for a turbojet casing comprising: a device for holding a cooling tube according to one aspect of the invention, and said cooling tube. The cooling device according to the invention may in particular have the following additional characteristic: the cooling device comprises a sheath suitable for damping the contact between the cooling tube on the one hand and the first and second plates of the cooling tube; on the other hand, the sheath surrounding a part of the cooling tube.
    [0007] Another aspect of the invention relates to a turbojet engine case comprising a cooling device according to one aspect of the invention. The cooling device according to the invention may in particular have the following additional characteristic: the turbojet casing forms a one-piece piece with the first plate. The invention and its various applications will be better understood by reading the following description and examining the figures that accompany it. BRIEF DESCRIPTION OF THE FIGURES The figures are presented for information only and in no way limitative of the invention. FIG. 1a shows a first perspective view of a cooling device for a turbojet casing according to the state of the art. - Figure 1b shows a second perspective view of the cooling device for turbojet casing of Figure 1a. FIG. 2a schematically illustrates an example of correct positioning of a cooling tube of a cooling device for a turbojet casing, with respect to a turbojet casing. FIGS. 2b, 2c and 2d schematically illustrate first, second and third examples of incorrect positioning of the cooling tube of FIG. 2a with respect to the turbojet casing of FIG. 2a. FIG. 3a schematically illustrates a perspective view of a device for holding a cooling tube for a turbojet casing according to a first exemplary embodiment of the invention. - Figure 3b schematically illustrates a sectional view of the holding device of Figure 3a. Figure 3c schematically illustrates a sectional view of a spacer of the holding device of Figure 3a with a first type of mounting. Figure 3d schematically illustrates a sectional view of the spacer of the holding device of Figure 3a with a second type of mounting. - Figure 4 schematically illustrates a perspective view of a plate of the holding device of Figure 3a. FIG. 5a schematically illustrates a partial perspective view of the holding device of FIG. 3a. - Figure 5b schematically illustrates a second partial perspective view of the holding device of Figure 3a. FIG. 6a schematically illustrates a partial perspective view of a device for holding a cooling tube for a turbojet casing according to a second exemplary embodiment of the invention. FIG. 6b schematically illustrates a second partial perspective view of the device of FIG. 6a. - Figure 7a schematically illustrates a perspective view of a device 15 for holding a cooling tube for a turbojet casing according to a third embodiment of the invention. - Figure 7b schematically illustrates a second perspective view of the holding device of Figure 7a. - Figure 8a schematically illustrates a perspective view of a turbojet casing 20 having the holding device of a cooling tube of Figure 7a. - Figure 8b schematically illustrates a second perspective view of the turbojet casing of Figure 8a. FIG. 8c schematically illustrates a third perspective view of the turbojet casing of FIG. 8a. - Figure 8d schematically illustrates a fourth perspective view of the turbojet casing of Figure 8a. DETAILED DESCRIPTION OF AT LEAST ONE EMBODIMENT OF THE INVENTION Unless otherwise specified, the same element appearing in different figures has a unique reference.
    [0008] Figures 1a and 1b, on the one hand, and 2a to 2d, on the other hand, have been previously described.
    [0009] FIG. 3a schematically illustrates a perspective view of a device for holding a cooling tube for a turbojet casing according to a first embodiment of the invention. FIG. 3b schematically illustrates a sectional view of said holding device 10. FIGS. 3a and 3b are jointly described and show in particular: a turbojet casing 20; a cooling device for the turbojet casing 20, the cooling device including at least one cooling tube TU1 and the holding device 10 for the cooling tube TU1; the holding device 10 of the cooling tube TU1 for said turbojet casing 20, the holding device comprising: a first plate PL1, the first plate PL1 being adapted to be arranged in integral contact with said turbojet casing ; a second platinum PL2 spaced apart from the first platinum PL1; A first spacer EN1 and a second spacer EN2 arranged between the first plate PL1 and the second plate PL2, the first and second spacers EN1, EN2 having between them a spacing adapted for the passage of the cooling tube 30.
    [0010] The casing 20 having a body 21 and a lateral rim 22, the first plate PL1 is in particular in contact with the body 21 of the casing 20. In the example shown in FIGS. 3a and 3b, the first plate PL1 has a first face which is completely in contact with the body 21 of the housing 20, and a second face, opposite to said first face, against which the cooling tube TU1 is positioned. In general terms, in the present description, the term "the first plate PL1 is arranged in integral contact with the casing 20" that a substantial part of said first plate PU is in contact with the body 21. of the casing 20, and that said first plate PL1 is fixed relative to said casing 20. By "non-negligible part" is meant more than one third of said first plate PU. The casing 20 may form a one-piece part with the first plate PU, or the first plate PU may be fixed to the casing 20 by connecting means, as we describe later. FIG. 3b illustrates in particular the first exemplary embodiment, in which the holding device 10 further comprises: a first connecting means of a first type t1L1 joining the first spacer EN1 to the first plate PL1, and - a second connecting means of the first type T1 L2 solidarisant the second spacer EN2 to the first plate PL1. The first connecting means of the first type T1 L1 is advantageously a controlled clamping element, which passes through the first plate PU on the one hand, and at least a part of the first spacer EN1 on the other hand. The second connecting means of the first type T1 L2 is advantageously a controlled clamping element, which passes through the first plate on the one hand, and at least a portion of the second spacer EN2 on the other hand.
    [0011] In the first exemplary embodiment illustrated in FIG. 3b, the housing 20 and the first plate PU are two separate parts, and the first connecting means of the first type t1 L1 and the second connecting means of the first type t1 L2 are advantageously used to secure the first plate PU in contact with the housing 20. To do this: - the first connecting means of the first type t1 L1 through at least a portion of the first spacer EN1 on the one hand, and the first plate PL1 and the casing 20 on the other hand; and - the second connecting means of the first type T1 L2 passes through at least a portion of the second spacer EN2 on the one hand, and the first plate and the housing 20 on the other hand.
    [0012] In the first exemplary embodiment illustrated in FIG. 3b, the holding device 10 further comprises: a first connecting means of a second type t2L1 joining the first spacer EN1 to the second plate PL2, and 5-a second second type connecting means t2L2 solidarisant the second spacer EN2 to the second platinum PL2. The first connecting means of the second type t2L1 is advantageously a controlled clamping element, which passes through the second plate on the one hand, and at least a part of the first spacer EN1 on the other hand. The second connecting means 10 of the second type t2L2 is advantageously a controlled clamping element, which passes through the second plate on the one hand, and at least a part of the second spacer EN2 on the other hand. In the first embodiment which is particularly shown in FIGS. 3a and 3b, the cooling device comprises a plurality of cooling tubes TU1 to TUn and the holding device 10 is advantageously able to maintain said plurality of cooling tubes TU1 to Tun. In general, when the cooling device comprises n cooling tubes TU1 to TUn, the holding device 10 preferably comprises: - (n + 1) spacers EN1 to EN (n + 1), two consecutive spacers ENk and EN (k + 1) having between them a spacing adapted to allow the passage of the cooling tube TUk, with 1 kn; - (n + 1) connecting means of the first type t1 L1 to t1L (n + 1), respectively for securing the (n + 1) spacers EN1 to EN (n + 1) to the first plate PL1; - (n + 1) connecting means of the second type t2L1 to t2L (n + 1), respectively for securing the (n + 1) spacers EN1 to EN (n + 1) to the second plate PL2.
    [0013] Note that in the case where all the cooling tubes have the same diameter, the spacing between two consecutive spacers is advantageously constant, regardless of the pair of consecutive spacers considered.
    [0014] The following variants of the first exemplary embodiment which has just been described with reference to FIG. 3b can be considered: in a first variant, the first plate PU, the first spacer EN1 and the second spacer EN2 form a part monobloc; in a second variant, the second plate PL2, the first spacer EN1 and the second spacer EN2 form a single piece; the first and second variants can be combined in a third variant, according to which the first plate PL1, the first and second spacers EN1 and EN2 and the second plate PL2 form a single piece; according to a fourth variant, compatible with the first, second and third variants which have just been described, the housing 20 forms a one-piece part with the first plate PL1. Figure 3c schematically illustrates a sectional view of the second spacer EN2 of the holding device 10 according to the first embodiment of the invention, with a first type of mounting. According to this first type of arrangement, the connecting means of the first type of each spacer has a tight fit with said spacer. Alternatively, the connecting means of the second type of each spacer may have a tight fit with said spacer. According to another alternative, for each spacer, the connecting means of the first type and the connecting means of the second type may have a tight fit with said spacer. The first type of assembly with tight fit advantageously makes it possible to achieve a stop, in the radial direction Rad, of each connecting means of the first type and / or the second type. In the particular case of the first type of assembly illustrated in FIG. 3c, for the second spacer EN2: the second connection means of the first type t1 L2 is a first part of a single fastener; The second connecting means of the second type t2L2 is a second part of the single fastener. Said single fastener comprises: a head TE; A rod Ti having a first portion Ti1, a second portion Ti2 and an adjusted shaft FU, the first and second portions Ti1 and Ti2 lying on either side of said adjusted shaft FU; - an EC nut. The head TE is partially in contact with the housing 20. The first part Ti1 of the rod Ti passes through the housing 20, the first plate PU and a first part of the second spacer EN2. The adjusted shaft FU makes it possible to exert a tightening at the level of the second spacer EN2. The second part Ti2 of the rod Ti passes through a second part of the second spacer EN2, as well as the second plate PL2. The second portion Ti2 of the rod Ti is at least partially threaded for screwing the nut EC. The nut EC is partially in contact with the second plate PL2. Figure 3d schematically illustrates a sectional view of the second spacer EN2 of the holding device 10 according to the first embodiment of the invention, with a second type of mounting. According to this second type of assembly, an elastic ring AN is arranged at each connecting means of the first type. Alternatively, an elastic ring can be arranged at each connecting means of the second type. According to another alternative, an elastic ring may be arranged at each connecting means of the first type and at each connecting means of the second type. The second type of mounting with an elastic ring advantageously makes it possible to achieve a stop, in the radial direction Rad, of each connecting means of the first type and / or the second type.
    [0015] In the particular case of the second type of assembly illustrated in FIG. 3d, the single fastener comprises: the head TE; The rod Ti having the first portion Ti1, the second portion Ti2 and a groove, the first and second portions Ti1 and Ti2 lying on either side of said groove; the elastic ring AN, also called "circlip", which is arranged in said groove; - the EC nut. FIG. 4 schematically illustrates a perspective view of the second plate PL2 of the holding device 10 according to the first embodiment of the invention. The second plate PL2 advantageously has: - a first oblong hole TO1 for mounting the first spacer EN1, and - a second oblong hole TO2 for mounting the second spacer EN2.
    [0016] More generally, the second plate PL2 advantageously has a plurality of oblong holes TO1 to TO (n + 1) for mounting the plurality of spacers EN1 to EN (n + 1) of the holding device 10. Said oblong holes allow to facilitate the mounting of the connecting means of the second type, allowing different mounting angles for said connecting means of the second type. FIG. 5a schematically illustrates a partial perspective view of the cooling device comprising the holding device 10 according to the first embodiment of the invention. FIG. 5b schematically illustrates a second partial perspective view of the cooling device comprising the holding device 10 according to the first embodiment of the invention. Figures 5a and 5b are jointly described. FIG. 5a shows in particular that, according to the first exemplary embodiment: the first plate PU advantageously comprises a first channel RG1 for positioning the cooling tube TU1 against the first plate PU, and 3021700 16 the second plate PL2 comprises advantageously a second channel RG2 for positioning the cooling tube TU1 against the second plate PL2. According to an alternative of the first exemplary embodiment, the first plate PL1 5 comprises the first channel RG1, or the second plate PL2 comprises the second channel RG2. Naturally, in the case where the cooling device comprises a plurality n of cooling pipes TU1 to TUn, the holding device 10 according to the first embodiment of the invention is advantageously such that: the first plate PL1 comprises a plurality n of first channels RG1, that is to say that the first plate PU advantageously comprises a first channel RG1 for each cooling tube, and / or 15 - the second plate PL2 has a plurality n of second channels RG2, c that is to say that the second platinum PL2 advantageously comprises a second channel RG2 for each cooling tube. FIGS. 5a and 5b show in particular that the cooling device of the turbojet casing 20 advantageously comprises, according to a first embodiment of the first embodiment, a sheath GA adapted for damping the contact between the cooling tube TU1 of firstly, and the first and second plates PU and PL2 on the other hand, the GA sheath surrounding a portion of the cooling tube TU1.
    [0017] In the first embodiment, the sheath GA advantageously makes it possible to limit the wear of the cooling tube TU1. Indeed, the GA sheath avoids direct contact between the cooling tube TU1 and the first and second plates PL1 and PL2. The GA sheath also makes it possible to limit the wear of the first and second plates PU and PL2. The material of the sheath GA is chosen so that during contact or friction between the sheath GA and the first and second plates PU and PL2, it is the GA sheath that wears, preserving the first and second plates PL1 and PL2. Finally, the GA sheath advantageously makes it possible to limit or brake a possible displacement of the cooling tube TU1. In the case where the cooling device comprises a plurality of cooling tubes, the cooling device advantageously comprises a damping sheath GA for each cooling tube of said plurality of cooling tubes. In the first embodiment of the first embodiment which is particularly represented in FIGS. 5a and 5b, the cooling device thus has the following characteristics: the first plate PL1 comprises the first channel RG1, and the second plate PL2 comprises the second channel RG2; the cooling device comprises the damping sheath GA, which surrounds a part of the cooling tube TU1. In this particular case, the damping sheath GA is advantageously in contact firstly with the first channel RG1 of the first plate PL1, and secondly with the second channel RG2 of the second plate PL2. FIG. 6a schematically illustrates a partial perspective view of a cooling device comprising a holding device 11 according to a second embodiment of the first embodiment of the invention. FIG. 6b schematically illustrates a second partial perspective view of the cooling device comprising the holding device 11 according to the second embodiment of the first embodiment of the invention. Figures 6a and 6b are described together.
    [0018] FIGS. 6a and 6b show in particular that the holding device 11 according to the second embodiment of the first exemplary embodiment advantageously comprises a buffer adapted for the damping of the contact between the cooling tube TU1 on the one hand, and the other part of the first PU board and / or the second PL2 board. To do this, said buffer comprises: a first part TA1 arranged on the first plate PL1, for the damping of the contact between the cooling tube TU1 and the first plate PU, and / or 3021700 18 - a second part TA2 arranged on the second plate PL2, for the damping of the contact between the cooling tube TU1 and the second plate PL2. The second portion TA2 of the buffer is not visible in Figures 6a and 6b, but is shown in Figures 8c and 8d 5 subsequently described. The second part TA2 of the buffer is referenced now for better understanding. In the second embodiment of the first exemplary embodiment which is particularly illustrated in FIGS. 6a and 6b, the holding device 11 according to the second embodiment of the invention has the following characteristics: the first plate PL1 comprises the first channel RG1 , and the second platinum PL2 comprises the second channel RG2; the holding device 11 comprises a damping buffer, of which the first part TA1 is arranged on the first plate PU, and the second part TA2 is arranged on the second plate PL2. In this particular case, the first portion TA1 of the damping buffer is advantageously arranged in the first channel RG1 of the first plate PL1, and the second part TA2 of the damping buffer is advantageously arranged in the second channel RG2 of the second platinum PL2. The first and second modes can be combined into a third mode, in which the holding device comprises the damping buffer TA and the cooling device comprises the damping sheath GA. According to a fourth embodiment of the first embodiment, the holding device may be devoid of damping buffer, and the cooling device may at the same time be free of damping sheath.
    [0019] We now describe a holding device according to a second exemplary embodiment, in which the first and second plates PL1 and PL2 do not comprise a positioning groove. This second embodiment corresponds to a simplified and economical operation, and is in particular compatible with the first, second, third and fourth modes that have previously been described in connection with the first embodiment.
    [0020] Figure 7a schematically illustrates a perspective view of a holding device 12 of a cooling tube for a turbojet casing according to a third embodiment of the invention. Figure 7b schematically illustrates a second perspective view of the holding device 12 10 according to the third embodiment. Figures 7a and 7b are described together. According to the third exemplary embodiment shown in FIGS. 7a and 7b, the first spacer EN1 and the second spacer EN2 form a single piece with the first plate PU. Said one-piece piece is for example 15 obtained by machining, that is to say that said one-piece piece is a machining monoblock, by welding or brazing said first and second spacers EN1 and EN2 on the first plate PL1. Alternatively, said first piece is a monobloc foundry. In general, using a one-piece part advantageously makes it possible, by limiting the number of distinct parts and minimizing the tolerances associated with each separate part, to reduce the dispersions that may occur during clamping at the time of assembly. According to the third exemplary embodiment, the first plate PL1 comprises at least: a first lateral tab OL1 arranged on a first side of the first plate PL1, the first lateral tab OL1 comprising a first positioning pin P01, and a second lateral tongue OL2 arranged on a second side of the first PU plate opposite the first side, the second lateral tongue OL2 having a second positioning pin P02.
    [0021] The first lateral tongue OL1 comprising the first positioning pin P01, and the second lateral tongue OL2 comprising the second positioning pin P02 advantageously make it possible to facilitate and improve the positioning of the first plate PU on the casing 20. FIGS. 8a schematically illustrates a perspective view of the turbojet casing 20, equipped with the cooling device comprising the holding device 12 according to the third embodiment of the invention. Figures 8b, 8c and 8d, which respectively illustrate second, third and fourth perspective views of the device of Figure 8a, are described in conjunction with Figure 8a.
    [0022] FIGS. 8a to 8d thus show the housing 20 on which the cooling device is mounted, comprising the cooling tube TU1 and the holding device 12 of the cooling tube TU1 according to the third embodiment of the invention. In the particular case illustrated here, the first plate PL1 comprises: at the second spacer EN2, on the first side of the first plate PL1: a first tab OL1 comprising a first positioning pin P01; at the second spacer EN2, on the second side of the first plate PL1: a second tab OL2 comprising a second positioning pin P02; at the level of the first spacer EN1, on the first side of the first plate PL1: a third tab OL3 comprising a third positioning pin P03; at the first spacer EN1, on the second side of the first plate PL1: a fourth tab OL4 having a fourth positioning pin PO4. The casing 20 comprises meanwhile: a first cavity CA1 receiving the first positioning pin P01; a second cavity CA2 receiving the second positioning pin P02; a third cavity CA3 receiving the third positioning pin P03;
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Device for holding (10, 11, 12) a cooling tube (TU1) for a turbojet casing, said holding device being characterized in that it comprises: a first plate (PL1) adapted to be arranged in contact integral with a turbojet casing (20); a second plate (PL2), the first and second plates (PL1, PL2) having between them a spacing; - a first spacer (EN1) and a second spacer (EN2) arranged between the first plate (PL1) and the second plate (PL2) and defining the spacing between the first and second plates (PL1, PL2), the first and second spacers having between them a spacing adapted for the passage of the cooling tube (TU1).
    [0002]
    2. Holding device (10, 11, 12) according to the preceding claim characterized in that: - the first plate (PL1) comprises a first channel (RG1) adapted for positioning the cooling tube (TU1) against the first platinum , and / or - the second plate (PL2) comprises a second channel (RG2) adapted for positioning the cooling tube (TU1) against the second plate.
    [0003]
    3. Holding device (10, 11, 12) according to any preceding claim characterized in that it comprises a buffer adapted for damping the contact between the cooling tube (TU1) on the one hand, and the first platen (PL1) and / or the second platen (PL2) on the other hand.
    [0004]
    4. Holding device (10, 11, 12) according to the preceding claim characterized in that the buffer comprises: - a first part (TA1) arranged on the first plate (PL1), and / or 3021700 23 - a second part ( TA2) arranged on the second platen (PL2).
    [0005]
    5. Holding device (12) according to any one of the preceding claims, characterized in that the first plate (PL1) comprises a first lateral tongue (OR) and a second lateral tongue (OL2), the first and second lateral tongues being adapted for positioning the first plate (PL1) on the turbojet casing (20). 10
    [0006]
    6. Holding device (10, 11) according to any one of the preceding claims characterized in that the first plate (PL1), the first spacer (EN1) and the second spacer (EN2) form a single piece. 15
    [0007]
    7. Holding device (10, 11, 12) according to any preceding claim characterized in that it comprises: - a first connecting means of a second type (t2L1) solidarisant the first spacer (EN1) to the second platen (PL2), and - a second connecting means of the second type (t2L2) solidarizing the second spacer (EN2) to the second platen (PL2).
    [0008]
    8. Holding device (10, 11, 12) according to the preceding claim characterized in that the second plate (PL2) comprises: - a first oblong hole (T01) for mounting the first connecting means 25 of the second type (t2L1 ), and a second oblong hole (T02) for mounting the second connecting means of the second type (t2L2).
    [0009]
    9. A cooling device for a turbojet engine casing comprising: a device for holding a cooling tube according to claim 1, and said cooling tube ; the cooling device comprising a sheath (GA) adapted for damping the contact between the cooling tube (TU1) of one part and the first and second plates (PL1, PL2) on the other hand, the sheath (GA) surrounding a portion of the cooling tube (TU1).
    [0010]
    10. Carter (20) turbojet comprising a cooling device 5 according to the preceding claim, the turbojet engine housing being characterized in that it forms a single piece with the first plate (PL1).
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    同族专利:
    公开号 | 公开日
    US20150345328A1|2015-12-03|
    US10077677B2|2018-09-18|
    GB2528754B|2020-09-30|
    GB2528754A|2016-02-03|
    GB201509007D0|2015-07-08|
    FR3021700B1|2016-07-01|
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    法律状态:
    2015-05-07| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-04| PLSC| Search report ready|Effective date: 20151204 |
    2016-05-17| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-13| PLFP| Fee payment|Year of fee payment: 4 |
    2017-11-10| CD| Change of name or company name|Owner name: SNECMA, FR Effective date: 20170713 |
    2018-04-23| PLFP| Fee payment|Year of fee payment: 5 |
    2019-04-19| PLFP| Fee payment|Year of fee payment: 6 |
    2020-04-22| PLFP| Fee payment|Year of fee payment: 7 |
    2021-04-21| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1454790A|FR3021700B1|2014-05-27|2014-05-27|DEVICE FOR MAINTAINING A COOLING TUBE FOR A TURBOJET CARTRIDGE|FR1454790A| FR3021700B1|2014-05-27|2014-05-27|DEVICE FOR MAINTAINING A COOLING TUBE FOR A TURBOJET CARTRIDGE|
    US14/721,555| US10077677B2|2014-05-27|2015-05-26|Holding device of a cooling tube for a turbojet casing|
    GB1509007.9A| GB2528754B|2014-05-27|2015-05-26|Holding device of a cooling tube for a turbojet casing|
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