• 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:
    This invention relates to nuclear power engineering, and in particular to methods for installing pipes to a steam generator. The purpose of the invention is to improve the quality of the products obtained. First assemble the lower part b, spacer plates 5 and the lower tube plate 2, then the mount
    公开号:SU1706380A3
    申请号:SU874203235
    申请日:1987-08-26
    公开日:1992-01-15
    发明作者:Була Жерар；Жорж Ален
    申请人:Фраматом (Фирма)；
    IPC主号:
    专利说明:

    FIG.
    A layer of pipes 1 located in the center of the chignon is installed, after which anti-vibration rods 8 are placed over the pipes. A load is applied to the rods, the distribution and magnitude of which imitates the weight of the layers that will be located above the installed pipe layer. Those pipes that form a gap with the rods 8, the magnitude of which exceeds the allowable, are recognized as defective and are removed. In their place establish new pipes. After installation of all layers
    the pipes located above the center layer, the steam generator is rotated at an angle ifiO and the remaining layers of pipes are mounted. The pipes are fixed in the lower tube plate 2 by expanding their ends, and the ends of the intermediate rods 8 are rigidly connected to each other by means of connecting rods. As a result, it is possible to detect defective pipes and replace them, and also to prevent damage to the pipes as a result of errors during their installation. 3 hp ff, 6 ill.
    The invention relates to nuclear energy and can be used in the assembly of steam generators.
    The purpose of the invention is to improve the quality of the products obtained by eliminating damage to the pipes during installation and to enable detection of defective pipes.
    1 shows a steam generator used in nuclear power engineering, a longitudinal section; Fig. 2 shows one layer of steam generator tubes with intermediate rods installed on them; in FIG. 3, node I in FIG. 2; in fig. - an assembly for fastening the longitudinal studs; on FIG. 3 — a steam generator after mounting the first half of the chignon; figure 6 - the steam generator in the initial stage of installation of the second half of the chignon.
    The steam generators used in nuclear power plants contain 3 thousand or more V-shaped pipes 1, the length of each of the branches of which can reach about 10 m. These pipes 1 are inserted into several plates with holes, and their ends are lead out into the lower tube plate 2, which is in contact with the water reservoir. The tubes are arranged in plane-parallel levels within which they are set concentric depending on
    bridges from the distance between their branches and the bend radius of their curved part. In addition, the width of the levels decreases with distance from the central level, and the contour contour of the curved parts of the pipes is a hemisphere. Since the levels are more dense, call this zone chignon.
    0
    five
    about ,.
    Q $
    0
    five
    The method is carried out as follows.
    During the installation of the pipes, the lower part is assembled together, the expansion plates 5 and the lower tube plate 2. The water tank 3, the upper part 6 and all the equipment inside this part are mounted later. The lower part k is mounted horizontally using supports with rollers that allow this lower part to be viewed.
    As shown in Sig.2, a layer of pipes 1 located in the center of the chignon is mounted first. The ends of each pipe 1 have conical heads that ensure the centering of pipes 1 in the openings of the spacer plates 5. The pipes are supplied by the manufacturer in boxes in a predetermined order. Boxes are about 3 m wide. Layers of pipes laid in a box are separated from each other by gaskets.
    The assemblers install the pipes 1 until their tips come out of the openings of the lower tube plate 2. After that, the tips are removed and the ends of the pipes are rolled to ensure easy-to-fasten the pipes. Then the height of the table 7 is adjusted so that it supports the pipes 1. After the entire layer of pipes is installed in place, anti-vibration rods 8 are installed on top of it. In the optimal variant, several rods 8 with different bends are fanned so as to eliminate the displacement of all pipes 1 forming this layer. The rods are laid evenly along the meridional directions. These rods hold C in place with the lambs of the THS: snaps, fasteners 9, consisting of two deformable clamps 1P and the body 11. The clamps 10 surround the pipe 1, and into the space between them Antivibration rod 8 enters with a gap.
    After this, a load is applied to the rods 8, the distribution and magnitude of which imitates the weight of the layers that will be located above the installed pipe layer. The load can be applied using any suitable device, such as a jack or simply an inert mass.
    As a result, the anti-vibration rods 8 press against the pipes of the first layer, with only a part of the rods in contact with the pipes, and a gap is formed between the other pipes and rods, which is measured with a gauge, since access to all the pipes of the layer is open.
    Pipes 1, and the gap is too large, these pipes are defective. They are removed and replaced with spare pipes, which is not hindered by the easily detachable mounting of their ends.
    After r: the weights of all the pipes 1 begin the MCI of the next layer directly on the anti-vibration rod with this 5 opbiM layer uklady- - mt-: Cn: i, to which is also a CP-specific crotch, for the first layer pipes. Thus, layers of pipes are subsequently installed in place.
    After the installation of half chignon is completed, the steam generator takes the form shown in FIG. 5. Now the table 7 supports the weight of half a chignon and is held with the help of studs 12 and 13, which are fixed on the lower part 4.
    The anti-vibration rods 8 are folded together by means of intermediate connecting parts 1, called studs. An adjusting wedge 15 is placed between the anti-vibration rods in order to avoid deformation when the studs are welded to the ends of the anti-vibration rods 8. The perpendicularity of the studs against the anti-vibration rods and layers of pipes 1 is checked. As a result, the studs are located on the chignon in the meridional directions, as shown in FIG.
    15
    0
    five
    thirty
    35
    "ABOUT
    45
    0
    The studs are attached at a certain distance from the outer one. This distance is determined depending on the flaring of the ends of the pipes 1, which is subsequently carried out. During welding, heat insulating coating of pipes 1 should be used, which is then removed. In addition to the studs, stiffness is also provided by the belts 16, located by the studs and preventing the deformation of the mounted polysignon under the action of its own weight. Then the second half of the chignon is mounted.
    From the position shown in Fig. 5, the lower part of the steam generator is rotated 180 °. The mounted hemisphere is below. It is necessary to take into account its lack of balance and compensate for it with the help of an appropriate brake system.
    Upon completion of the rotation, table 7 is dismantled and replaced by frame 17, to which the straps 16 are fastened, which hold the weight of the half-pig with the help of pins.
    + The second half of the chignon is mounted in the same way. As a result, a residual is carried out; The alignment of the vibration rods 8, the measurement of gaps, the replacement of rejected pipes 1 and the installation of the next layer of pipes. Thereafter, the anti-radiation rods 8 of the second half of the chignon are interconnected by means of other studs. After all the pipes have been installed in place, their ends can be flared into the lower tube plate 2. Then the steam generator is further mounted.
    Thus, it is possible to detect defective pipes that are inside the chignon. In addition, pipe damage is prevented as a result of errors when anti-vibration rods are in place, and the pipes in the steam generator can be installed with a much higher density, for example, in a checkerboard pattern.
    55 claims
    权利要求:
    Claims (3)
    [1]
    one . The method of installing pipes in the steam generator, which consists in arranging the pipes with flat horizontal layers and placing between the layers of intermediate rods, in particular anti-vibration rods, in which the pipe layers and intermediate rods are alternately installed, in order to improve the quality of the products obtained After installing one layer of pipes, intermediate rods are placed on top of it, after which a load is applied to the rods that are directed perpendicularly to the plane of the pipe layer and quoting about the size and distribution, the total weight of the layers of pipes located in the finished product over this layer, control the size of the gap between the intermediate rods and each of the pipe layers, dismantle those pipes, the gap between them and the intermediate rods do not meet the allowable, and replace these pipes by others.
    to l
    five
    0
    [2]
    2. The method of pop. 1, which differs from the fact that after the installation of a layer of pipes, the axle pipes (foremost, or previously pre-detachable fastening by flaring the ends.
    [3]
    3. The method according to p. I and 2, characterized in that the installation of the pipe layers is carried out starting from the central layer, at the same time all the layers located above the central layer are mounted, after which the steam generator is rotated 180 °, the mounted layers are positioned pipes under the central layer, and install the remaining layers of pipes, placing them above the central layer.
    k. The method according to the item 3, whether it is left in and out so that before turning the steam generator the ends of the intermediate rods installed in place are rigidly fastened to each other by means of connecting studs.
    Figz
    about
    WITH
    cho
    about
    "Ъ
    7
    t
    ъ
    3
    at
    N
    tr
    f6
    12
    14
    fig
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1706380A3|1992-01-15|Method of installation of tubes in steam generator
    US4297061A|1981-10-27|Steam generator shell parting method and apparatus
    JP4191322B2|2008-12-03|Steam turbine plant installation method
    US4042651A|1977-08-16|Supporting framework for heat transfer surfaces for cooling tower
    US5042433A|1991-08-27|Device for stabilizing the tubes of the bundle of a steam generator having anti-vibration bars
    US2668634A|1954-02-09|Spherical segment tank and method of making same
    US4773145A|1988-09-27|Method of constructing a cylindrical rotor assembly for a rotary regenerative heat exchanger
    US2916263A|1959-12-08|Fluid heat exchange apparatus
    KR910007144B1|1991-09-18|Rack for the storage of fuel elements of nuclear reactors
    US2387134A|1945-10-16|Method of forming t-head columns
    RU2583321C1|2016-05-10|Steam generator with horizontal beam of heat exchange pipes and assembly method thereof
    US4142936A|1979-03-06|Core support structure for nuclear power plants
    CN103317245B|2015-08-19|A kind of method of nuclear steam generator poling and anti-vibration strip welding equipment
    US4413617A|1983-11-08|Solar collector module
    JPH08162609A|1996-06-21|Thyristor valve
    JPH0749268Y2|1995-11-13|Cooling fan mounting structure for heat exchanger
    GB1567259A|1980-05-14|Storage chambers for nuclear fuel rods
    JP2008064107A|2008-03-21|Transport and installation method of equipment
    CN213772981U|2021-07-23|Bridge tower assembled horizontal temporary cross brace
    JPH06146659A|1994-05-27|Installation of sub structure of adaptive type growth structure
    CN210658051U|2020-06-02|Adjustable corrugated steel web supporting structure
    RU2042879C1|1995-08-27|Device for securing coil pipes of horizontal pipe banks for fluidized bed boiler
    US4649835A|1987-03-17|Supporting structure for heat insulation
    RU2068306C1|1996-10-27|Section rolling mill unit
    GB2032256A|1980-05-08|Arrangement for installing cables, pipes and the like
    同族专利:
    公开号 | 公开日
    DE262011T1|1988-09-01|
    JPS6365202A|1988-03-23|
    EP0262011A1|1988-03-30|
    DE3770100D1|1991-06-20|
    ES2002258A4|1988-08-01|
    US4839951A|1989-06-20|
    FR2603364B1|1988-11-10|
    KR950007019B1|1995-06-26|
    CA1274676A|1990-10-02|
    FR2603364A1|1988-03-04|
    CN1007999B|1990-05-16|
    ES2002258B3|1992-01-01|
    KR880003140A|1988-05-14|
    CN87105900A|1988-04-13|
    EP0262011B1|1991-05-15|
    JPH0723761B2|1995-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3007679A|1960-06-22|1961-11-07|Westinghouse Electric Corp|Anti-vibration structure for heat exchanger tubes|
    US3212567A|1962-05-08|1965-10-19|Combustion Eng|Anti-vibration support means|
    US4173060A|1977-06-24|1979-11-06|Westinghouse Electric Corp.|System and method for retubing a steam generator|
    US4386456A|1978-03-31|1983-06-07|Phillips Petroleum Company|Method of assembling a unitary heat exchanger tube bundle assembly|
    US4202085A|1978-11-30|1980-05-13|Westinghouse Electric Corp.|Apparatus and method for installing rows of U-shaped tubes in a heat exchanger|
    US4640342A|1984-01-26|1987-02-03|Westinghouse Electric Corp.|Expandable antivibration bar for heat transfer tubes of a pressurized water reactor steam generator|
    JPS60245999A|1984-05-21|1985-12-05|Hokkaido Electric Power Co Inc:The|Heat exchanger|
    CA1255984A|1984-11-13|1989-06-20|Byre V. Gowda|Anti-vibration bars for nuclear steam generators|
    US4653576A|1985-05-01|1987-03-31|Westinghouse Electric Corp.|Expandable antivibration bar for a steam generator|US5072786A|1990-07-27|1991-12-17|Electric Power Research Institute, Inc.|Anti-vibration support of U-bend flow tubes in a nuclear steam generator|
    FR2684172B1|1991-11-27|1993-12-31|Framatome|HEAT EXCHANGER, WITH U-TUBES EQUIPPED WITH AN ANTI-THEFT SUPPORT DEVICE.|
    FR2709174B1|1993-08-20|1995-11-17|Framatome Sa|Heat exchanger comprising means for holding anti-vibration bars inserted between the tubes of the heat exchanger bundle.|
    FR2713971B1|1993-12-21|1996-03-08|Framatome Sa|Device for temporarily holding an end portion of a bundle of tubes of a heat exchanger.|
    FR2714626A1|1993-12-31|1995-07-07|Framatome Sa|Removable supports for tubes of a heat exchanger during assembly and transport|
    FR2748795B1|1996-05-15|1998-08-28|Framatome Sa|DEVICE FOR HOLDING AN END END OF A TUBE BEAM OF A HEAT EXCHANGER|
    JP4585414B2|2005-09-16|2010-11-24|三菱重工業株式会社|Vibration preventing device and heat exchanger using the same|
    US8695688B2|2007-07-18|2014-04-15|Babcock & Wilcox Canada Ltd.|Nubbed U-bend tube support|
    JP2012081475A|2010-10-06|2012-04-26|Mitsubishi Heavy Ind Ltd|Dissimilar material joint structure|
    JP5582004B2|2010-12-07|2014-09-03|株式会社Ｉｈｉ|Fixing method of heat transfer tube runout prevention bar|
    JP5885949B2|2011-06-28|2016-03-16|三菱重工業株式会社|Steam generator|
    JP5901266B2|2011-12-12|2016-04-06|三菱重工業株式会社|Steam generator|
    CN103659169B|2012-09-23|2016-06-22|丹阳市龙鑫合金有限公司|A kind of method of the anti-vibration bar assembly preparing nuclear power generating sets|
    CN103317245B|2013-06-05|2015-08-19|上海电气核电设备有限公司|A kind of method of nuclear steam generator poling and anti-vibration strip welding equipment|
    US11193715B2|2015-10-23|2021-12-07|Hyfra Industriekuhlanlagen Gmbh|Method and system for cooling a fluid with a microchannel evaporator|
    US10619932B2|2015-10-23|2020-04-14|Hyfra Industriekuhlanlagen Gmbh|System for cooling a fluid with a microchannel evaporator|
    JP6898200B2|2017-10-05|2021-07-07|三菱パワー株式会社|Heat exchanger|
    US11226139B2|2019-04-09|2022-01-18|Hyfra Industriekuhlanlagen Gmbh|Reversible flow evaporator system|
    CN111486740B|2020-04-23|2021-09-28|中国原子能科学研究院|Heat exchanger and method of assembling the same|
    CN112975268B|2021-05-12|2021-08-06|上海电气核电设备有限公司|Installation method of anti-seismic strip of steam generator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8612126A|FR2603364B1|1986-08-27|1986-08-27|METHOD FOR PLACING TUBES IN A STEAM GENERATOR|
    [返回顶部]