• 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 a pack of heat transfer plates (2, 3) which are intended for heat exchangers, preferably for rotary regenerative air preheaters. The plates have mutually parallel S-shaped double ridges (21, 22; 31, 32) and the plates are arranged in the pack (1) so that the double ridges of one plate intersect the double ridges of an adjacent plate and extend symmetrically and obliquely in mutually opposite directions relative to the main flow directions (6) of the heat exchanging media. According to the invention the throttling effect normally manifest at the double-ridge intersections (24) is avoided by orienting the plates (2, 3) so that each pair of double ridges which converge onto an intersection (24) presents a part (21) of the double ridge of the one plate (2) which projects into an intermediate channel, and also a part (32) of the double ridge of the other plate (3) which projects from the intermediate channel.
    公开号:SU1709928A3
    申请号:SU4614815
    申请日:1989-08-25
    公开日:1992-01-30
    发明作者:Карлссон Курт；Петерссон Биргер
    申请人:Свенска Ротор Маскинер Аб (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to heat engineering and can be used in heat transfer devices.
    Known package corrugated heat transfer plates separated by flat sheets.
    Also known is a package of heat transfer plates for a heat exchanger containing plates with corrugations each made in the form of a pair of identical ridges protruding on both sides of the plates with the formation of corresponding protrusions and depressions stretched between the opposite edges of the package at an angle to the latter, oriented in adjacent plates in opposite direction relative to the main flow of the coolant and the oppositely directed protrusions in adjacent plates at the points of intersection of the corresponding corrugations with the image vaniem channels between the plates for the heat medium. These plates have optimal properties in terms of thermal performance and low pressure drop conditions. These heat transfer plates are used when packaging them into wedge-shaped bags, especially in regenerative air heaters, since such bags are less susceptible to blocking with soot and other dense particles present in the flue gases than other types of heat transfer plates used for similar purposes.
    Known plate packs are produced in three different ways.
    According to the first method, the band tone. Sheet metal is first rolled between two profiled rolls, as a result of which it acquires an assumed profiled shape, after which the profiled strip of metal gradually cuts into a large number of pieces, the size of which is, for example, the smallest or narrowest size of the wedge-shaped plate pack. After this, the profiled metal strip is again cut into an equal number of plates, the size of which represents the next smallest package size, and so on until from the specified strip of profiled sheet metal the plates having the largest desired size are cut. In this way, a stock of plates is manufactured having various required dimensions, from which the required plates with successively increasing or decreasing dimensions can be assembled.
    wedge-shaped plate pack. The plates are assembled one above the other so that the crests of the corrugations of the adjacent plates intersect after each successive plate is rotated 90 °.
    The flow channels formed by the adjacent plates have the form described in the above descriptions.
    (According to the second method, the respective thin sheet metal strips are simultaneously rolled into separate rolling mill cages, which are mutually arranged so that when the thin sheet metal strips are fed from the respective roll pairs in the superimposed form,
    5, the ridges of the corrugations of the respective bands intersect with each other as described. This method involves simultaneously cutting both strips of thin sheet metal into smaller pieces, gradually resizing the plates after the cutting operation so that the pieces cut from the strips can immediately form a wedge-shaped body, after which the procedure is repeated for the next package plates.
    The third method includes a combination of the first and second methods. According to this method, only one rolling mill stand is used. After dividing the metal strip into plates, they are assembled into packages, although in this case it is necessary to rotate each subsequent plate after cutting the said plate from the strip so that the crests of the corrugations
    5 on mutually adjacent or adjacent plates intersected.
    A disadvantage of the known plates is the difficulty in efficiently blowing out soot and corrosion products, since the Jets
    0 are destroyed in the flow channels between the plates by obliquely extended corrugations. As a result, channels formed by mutually adjacent or adjacent plates are partially blocked from time to time,
    5 which may lead to the need to turn off the heat exchange system to clean the air preheater.
    In some countries, this type of plate is used because of its high thermal conductivity, but in conjunction with the use of additional solutions to improve the removal of soot and other dense particles by blowing. One such solution is to divide the heat transfer plates by
    g at least two parts in the direction of flow of the medium with an empty gap between these two parts, so that soot and other dense particles can be blown towards the empty gap at both ends of the plates.
    The purpose of the invention is to reduce channel fouling.
    The goal is achieved by the fact that the depressions of the corrugations of adjacent plates are located one against the other in the section plane passing through the contact points of the protrusions of the respective corrugations.
    If a blockage does occur, it starts at the place where the ridges of the ridges of the adjacent plates converge to the intersection point and are part of the ridges that protrude into the intermediate channel. This means that the plate is unfavorably turned in spite of the fact that the ridges of the adjacent plates intersect and that, therefore, several intersection points on this plate tend to clog. Such intersection points begin blocking. Due to the fact that they act as funnel-shaped constrictions in which soot particles, soot and other dense particles are collected, as well as often sticky particles, which impede the through flow of the coolant. Also, the intersection points of the slow jet used to blow soot and other dense particles.
    In the proposed package, all the intersections of the crests of the corrugations are the same, and in each intersection site one ridge always has a part that protrudes outward from the channel and does not prevent the flow of the medium through the intersection. Such an organization also allows the jets used to blow soot and the like to pass through the intersection without slowing down. In order to minimize the flow resistance and thus the tendency to clog, the distance between the corrugations on each plate is substantially greater than the width corrugated .
    FIG. 1 shows a wedge-shaped package of heat transfer plates: in FIG. 2 shows the flow of the heat transfer fluid at the intersection of the ridges of two adjacent plates made in accordance with the invention, a partial section; in fig. 3 - the same, taken in the direction of flow of the coolant, a simplified view; in fig. 4 is a plane passing through the contact points of the crests of the respective corrugations shown in FIG. 3, cross section; in fig. 5 is similar to FIG. 3 The flow of the coolant from the two plates that are not relevant to the invention.
    FIG. 1 shows a wedge-shaped package 1 of heat transfer plates 2 and 3, which are of the type shown in FIG. 2 and 3, and which are intended for use in a rotary regenerative air preheater. A heater of this type contains a large number of packages of 1 plates, which form a ring-shaped body with channels for heat transfer fluid in the heater, these channels being extended 5 between the two mutually opposite extreme surfaces 4 and 5 of the corresponding pacts 1 of the plates. The main flow direction of the medium is indicated by the double arrow 6.
    0 Each plate 2 and 3 is provided with corrugations in the form of ridges 7.8, 12.13 with a distance of 2a between the tops of the corresponding projections and depressions. The distance between the flat sections 9 and 14 plates tdkzhe
    5 is 2a. As seen in FIG. 2 and 3, the distance between adjacent plates varies from 2a to 4a at the points 10 of the intersection of the ridges, with the drip path at these intersections
    0 is indicated by arrow 11. This means that soot particles, soot and other dense particles accompanying the coolant can easily pass through the intersection point 10. The same conditions are observed with the flow of heat transfer fluid in the opposite direction and in adjacent channels (not shown).
    Consider the case when the plates are not oriented one relative to another,
    0 although located so. that ridges intersect each other. This case is depicted in FIG. 5. where one plate 15, having ridges 16 and 17, is differently oriented compared to the corresponding plate.
    5 depicted in FIG. 3. In FIG. 5, ridges 7 and 17 face each other at intersection points 18 so that the distance between the plates is a, resulting in a narrowing of the flow path at the location of said intersections. In general, the channel / between the plates 2 and 15 has a throttling effect for the flow of heat-transfer fluid, especially when compared with the flow of heat-transfer fluid in two channels (not shown) adjacent to the previous channel.
    The constrictions at the intersection points 18 cause soot particles, soot and other dense particles carried by the heat transfer fluid to adhere near the intersections 18
    Q upstream and, therefore, in the funnel-shaped intervals above the intersections, when viewed in the direction of flow.
    Thus, of all the heat transfer plates included, for example, in the preheater, it is sufficient that only one plate is not oriented correctly so that clogging or blocking of the flow channels starts. This initial clogging usually spreads quickly to other flow channels. To avoid any risk of incorrect orientation of the plates, it is necessary to roll a metal strip and cut profiled metal strips into plates, and then pack the plates automatically in a predetermined sequence, for example, using two rolling mill stands, with a direct feed to the strip cutting device and thereafter immediately on a device for packing heat transfer plates into ready-to-use packages. The use of two rolling mill stands eliminates the need to rotate every second plate before assembling the plates into packages in accordance with the previously used standard procedure which results in that. that the plates of at least many of the packages in each air heater are oriented right or wrong. When using the method in which one stand of the sticking mill is used and in which each second plate is rotated by a specified number of degrees, it is necessary that the respective plates always rotate around an axis at right angles to the main direction of the main channels, i.e. parallel to the guide line along which the profiled figure .1
    f3 3 rakes are fed to a strip cutting device. If this condition is not fulfilled, the plates are oriented incorrectly. Also, continuity should be ensured after stopping the movement. All these difficulties are eliminated when using the double stands of the rolling mill. Formula of the Invention A package of heat transfer plates for a heat exchanger comprising plates shaped by corrugations, each made in the form of a pair of identical ridges protruding from both sides of the plates with the formation of corresponding protrusions and depressions stretched between opposite edges of the package at an angle to the latter, oriented in adjacent plates in the opposite direction relative to the main coolant flow and contacting with oppositely directed projections in adjacent plates at the intersection points correspond Corrugating corrugations with the formation of channels between the plates for the coolant, characterized in that, in order to reduce clogging of the channels, the depressions of the corrugations of the adjacent plates are located opposite to each other in the section plane passing through the points of contact of the protrusions of the corresponding corrugations. g l
    FIG.
    7 V.
    权利要求:
    Claims (1)
    [1]
    Claim
    10 A package of heat transfer plates for a heat exchanger, containing plates profiled with corrugations made each in the form of a pair of identical ridges, protruding from both sides of the plates with the formation of the corresponding protrusions and depressions elongated between the opposite edges of the package at an angle to the latter, oriented in the opposite direction to adjacent plates direction relative to the main coolant flow and contacting counter-directed protrusions in adjacent plates at the intersection points of the respective corrugations with the channeling between the plates for 25 coolant, characterized in that, in order to reduce clogging of the channels, the troughs of the corrugations of adjacent plates are located one against the other in the section plane passing through the contact points of 30 protrusions of the corresponding corrugations.
    Figure 1
    B & $ 3 2
    Fig.Z
    FIG. 4
    FIG. 5
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1709928A3|1992-01-30|Heat-transfer plates stack
    EP1004839B1|2004-02-11|Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self spacing fill-sheets
    US4449573A|1984-05-22|Regenerative heat exchangers
    US4469167A|1984-09-04|Heat exchanger fin
    JPH0682033B2|1994-10-19|Heat transfer element assembly
    US4365667A|1982-12-28|Heat exchanger
    JP3168427B2|2001-05-21|Air preheater heat transfer surface
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    US5062475A|1991-11-05|Chevron lanced fin design with unequal leg lengths for a heat exchanger
    EP1204837B1|2003-05-21|Heat transfer element assembly
    US5899261A|1999-05-04|Air preheater heat transfer surface
    GB2158569A|1985-11-13|A gas-to-gas heat exchanger
    KR100305130B1|2001-09-24|Air preheater heat transfer surface
    AU766548B2|2003-10-16|Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets
    US4796694A|1989-01-10|Cooling fin for heat exchanger
    GB1471944A|1977-04-27|Heat exchangers
    US4375832A|1983-03-08|Tube and fin radiator
    JPS61243289A|1986-10-29|Finned heat exchanger
    EP0106480A2|1984-04-25|Cooling fins for heat exchanger
    SU1725060A2|1992-04-07|Heat-exchange packing
    JP3145277B2|2001-03-12|Heat transfer tube with internal groove
    GB896171A|1962-05-09|Improvements in and relating to heat exchangers of the plate type
    JPS57117788A|1982-07-22|Heat exchanger
    SU1322069A1|1987-07-07|Heat-exchange member
    JPH0827150B2|1996-03-21|Heat exchanger
    同族专利:
    公开号 | 公开日
    DK162409C|1992-03-16|
    DK162409B|1991-10-21|
    SE455883B|1988-08-15|
    WO1988006709A1|1988-09-07|
    ES2006333A6|1989-04-16|
    DK595188D0|1988-10-26|
    SE8700856D0|1987-02-27|
    FI91917C|1994-08-25|
    JP2653691B2|1997-09-17|
    HU201400B|1990-10-28|
    DK595188A|1988-10-26|
    RO106608B1|1993-05-31|
    AU606932B2|1991-02-21|
    JPH02502845A|1990-09-06|
    EP0354211A1|1990-02-14|
    FI893807A0|1989-08-11|
    DE3870874D1|1992-06-11|
    AU1427288A|1988-09-26|
    KR890700798A|1989-04-27|
    KR930004210B1|1993-05-21|
    US4953629A|1990-09-04|
    BR8807383A|1990-03-20|
    FI91917B|1994-05-13|
    EP0354211B1|1992-05-06|
    HUT50957A|1990-03-28|
    AT75844T|1992-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3465815A|1968-01-05|1969-09-09|Power Replacements Inc|Heat exchanger assembly for air preheater|
    US4449573A|1969-06-16|1984-05-22|Svenska Rotor Maskiner Aktiebolag|Regenerative heat exchangers|
    SE7710409L|1977-09-16|1979-03-17|Wiking Lars|PACKAGE INCLUDING A STACK OF AGAINST MATTERS, RECTANGULAR PLATES INTENDED TO BE PLACED IN A REGENERATIVE HEAT EXCHANGER AND MANUFACTURED TO MANUFACTURE SUCH A PACKAGE|
    US4396058A|1981-11-23|1983-08-02|The Air Preheater Company|Heat transfer element assembly|
    GB2183811A|1986-09-12|1987-06-10|Howden James & Co Ltd|Rotary regenerative heat exchanger|US5318102A|1993-10-08|1994-06-07|Wahlco Power Products, Inc.|Heat transfer plate packs and baskets, and their utilization in heat recovery devices|
    US5696872A|1994-10-07|1997-12-09|Seward; Harold H.|Thermal energy storage and exchanger device|
    AUPN697995A0|1995-12-04|1996-01-04|Urch, John Francis|Metal heat exchanger|
    US5803158A|1996-10-04|1998-09-08|Abb Air Preheater, Inc.|Air preheater heat transfer surface|
    US5735158A|1996-10-10|1998-04-07|Engelhard Corporation|Method and apparatus for skew corrugating foil|
    US5836379A|1996-11-22|1998-11-17|Abb Air Preheater, Inc.|Air preheater heat transfer surface|
    US5899261A|1997-09-15|1999-05-04|Abb Air Preheater, Inc.|Air preheater heat transfer surface|
    DE102006003317B4|2006-01-23|2008-10-02|Alstom Technology Ltd.|Tube bundle heat exchanger|
    JP5343511B2|2008-10-30|2013-11-13|株式会社島津製作所|Heat exchanger|
    US9557119B2|2009-05-08|2017-01-31|Arvos Inc.|Heat transfer sheet for rotary regenerative heat exchanger|
    US8622115B2|2009-08-19|2014-01-07|Alstom Technology Ltd|Heat transfer element for a rotary regenerative heat exchanger|
    US9200853B2|2012-08-23|2015-12-01|Arvos Technology Limited|Heat transfer assembly for rotary regenerative preheater|
    US10175006B2|2013-11-25|2019-01-08|Arvos Ljungstrom Llc|Heat transfer elements for a closed channel rotary regenerative air preheater|
    US10094626B2|2015-10-07|2018-10-09|Arvos Ljungstrom Llc|Alternating notch configuration for spacing heat transfer sheets|
    US10837714B2|2017-06-29|2020-11-17|Howden Uk Limited|Heat transfer elements for rotary heat exchangers|
    法律状态:
    2006-02-20| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: PD4A |
    2007-12-20| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: MM4A Effective date: 20060226 |
    优先权:
    申请号 | 申请日 | 专利标题
    SE8700856A|SE455883B|1987-02-27|1987-02-27|KIT OF TRANSFER TRANSFER PLATES, WHICH THE DOUBLE LOADERS OF THE PLATES HAVE A SPECIFIC INBOUND ORIENTATION|
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