CN217236592U - Plate for plate heat exchanger - Google Patents

Abstract

The utility model discloses a plate heat exchanger plate, which comprises a plate main body, wherein the corners of the plate main body are respectively provided with a first flow through hole, a second flow through hole, a third flow through hole and a fourth flow through hole; the first surface of the plate-shaped main body is provided with an annular sealing gasket; the peripheries of the second circulation hole and the fourth circulation hole are respectively provided with a first isolation sealing gasket and a second isolation sealing gasket; the first surface of the plate-shaped main body is provided with a flow dividing piece, and the flow dividing piece comprises a first flow dividing sealing gasket and a second flow dividing sealing gasket; the upper end of the first shunting sealing gasket is connected with one section of the annular sealing gasket, the lower end of the first shunting sealing gasket extends downwards, the lower end of the second shunting sealing gasket is connected with one section of the annular sealing gasket, and the upper end of the second shunting sealing gasket extends upwards, so that a plurality of flow areas are defined on the first surface of the plate-shaped main body, the surface of the plate-shaped main body has a large membrane heat transfer coefficient, high-efficiency heat exchange is realized, the number of plates of the plate heat exchanger can be reduced under severe working conditions, and the whole size scale of the plate heat exchanger is reduced.

Description

Plate for plate heat exchanger

Technical Field

The utility model relates to a nuclear power technical field especially relates to a modified plate heat exchanger slab.

Background

At present, only one flow path can be realized for the flow paths between corrugated plates of a plate heat exchanger, hot fluid (or cold fluid) flows through the whole plate after being distributed to the flow paths between the plates at an inlet corner hole and then is collected at an outlet corner hole, and only one flow path is realized for the plate flow paths.

When the flow of the heat exchanger is low, under the severe working conditions of high heat load requirement and small end difference, the flow velocity in the flow channel between the plates is very low, the membrane heat transfer coefficient is small, the total heat transfer coefficient is small, the required heat exchange area (the number of the plates) is very large, the flow velocity of the flow channel between the plates can be further reduced by increasing the heat exchange area of the plates, and therefore vicious cycle is achieved, the number of the plates of the heat exchanger is large, the heat transfer capacity is low, and equipment is huge.

Although the flow area of fluid between plates can be reduced by reducing the width of the single plates, the length of the plate needs to be correspondingly lengthened, but the thin and high plate is generally difficult to apply due to the limitation of the height direction.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in that, a plate heat exchanger slab is provided.

The utility model provides a technical scheme that its technical problem adopted is: constructing a plate heat exchanger plate, comprising a plate-shaped main body, wherein the plate-shaped main body comprises a first surface and a second surface which are opposite to each other;

the corners of the plate-shaped main body are respectively provided with a first flow through hole, a second flow through hole, a third flow through hole and a fourth flow through hole, the first flow through hole and the third flow through hole are positioned on a first diagonal line, and the second flow through hole and the fourth flow through hole are positioned on a second diagonal line;

an annular sealing gasket is arranged on the first surface of the plate-shaped main body, and the first flow through hole, the second flow through hole, the third flow through hole and the fourth flow through hole are all positioned on the inner ring of the annular sealing gasket;

the second flow through hole and the fourth flow through hole are positioned on the peripheral edge of the first surface of the plate-shaped main body and are respectively provided with a first isolation sealing gasket and a second isolation sealing gasket, and two ends of the first isolation sealing gasket and two ends of the second isolation sealing gasket are respectively correspondingly connected with the annular sealing gasket;

the first surface of the plate-shaped main body is provided with a flow dividing piece, and the flow dividing piece comprises at least one first flow dividing sealing gasket and at least one second flow dividing sealing gasket;

the upper end of the at least one first flow dividing sealing gasket is connected with a section of the annular sealing gasket between the first flow through hole and the second flow through hole, the lower end of the at least one first flow dividing sealing gasket extends downwards, the lower end of the at least one second flow dividing sealing gasket is connected with a section of the annular sealing gasket between the third flow through hole and the fourth flow through hole, and the upper end of the at least one second flow dividing sealing gasket extends upwards, so that a plurality of flow areas are defined by the first surface of the plate-shaped main body.

Preferably, the second flow through hole is provided with a first annular sealing gasket at the periphery of the first surface of the plate-shaped body;

and a second annular sealing gasket is arranged on the periphery of the first surface of the plate-shaped main body of the fourth flow hole.

Preferably, the at least one first split gasket comprises a first longitudinal section connected with the annular gasket, a first inclined section connected with the first longitudinal section and extending obliquely to a first direction, and a second longitudinal section connected with the first inclined section and extending downward away from the first longitudinal section;

the at least one second split gasket comprises a third longitudinal section connected with the annular gasket, a second inclined section connected with the third longitudinal section and extending obliquely to the second direction, and a fourth longitudinal section connected with the third longitudinal section and extending upward, wherein the fourth longitudinal section is far away from the second inclined section.

Preferably, the first longitudinal section and the third longitudinal section are located on the same straight line.

Preferably, the first inclined section is arranged in parallel with the second inclined section.

Preferably, the second longitudinal section is arranged in parallel with the fourth longitudinal section.

Preferably, the first surface of the plate-shaped body is provided with an annular groove for mounting the annular gasket; and a first isolation groove and a second isolation groove for mounting the first isolation gasket and the second isolation gasket, respectively; and a first annular groove and a second annular groove for mounting the first annular seal gasket and the second annular seal gasket respectively.

Preferably, the first surface of the plate-shaped main body is provided with a mounting groove for mounting the flow divider.

Preferably, the mounting groove comprises a first longitudinal groove connected with the upper end of the annular groove, and a first groove and a second groove which are connected with the first longitudinal groove and extend downwards in a first direction and a second direction respectively;

the mounting groove also comprises a second longitudinal groove connected with the lower end of the annular groove, and a third groove and a fourth groove which are connected with the first longitudinal groove and extend upwards in an inclined manner towards the first direction and the second direction respectively;

the mounting groove further includes a first fixing groove connecting the first groove and the third groove, and a second fixing groove connecting the second groove and the fourth groove.

Preferably, the first surface of the plate-like body is further provided with corrugations.

Implement the utility model discloses following beneficial effect has: the plate type heat exchanger plate comprises a plate type main body, wherein a sealing gasket can be arranged on the first surface of the plate type main body, and a plurality of flow areas are defined on the first surface of the plate type main body by the sealing gasket, so that the surface of the plate type main body has a large membrane heat transfer coefficient, high-efficiency heat exchange is realized, the number of plates of the plate type heat exchanger can be reduced under severe working conditions, and the whole size scale of the plate type heat exchanger is reduced.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a plate-shaped body of a plate heat exchanger plate a according to some embodiments of the present invention;

figure 2 is a schematic structural view of a plate-like body of a plate heat exchanger plate B according to some embodiments of the present invention;

fig. 3 is a schematic structural view of a gasket of a plate heat exchanger plate a according to some embodiments of the present invention;

fig. 4 is a schematic structural view of a gasket of a plate B of a plate heat exchanger according to some embodiments of the present invention;

fig. 5 is a schematic view of the media flow of plate heat exchanger plate a according to some embodiments of the present invention;

fig. 6 is a schematic diagram of the media flow of a plate heat exchanger plate B of some embodiments of the present invention;

fig. 7 is a schematic view of the application of a plate a and a plate B of some embodiments of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-7, in some embodiments of the present invention, the plate heat exchanger includes a plate bundle structure, which may include a plurality of plate heat exchanger plates a and a plurality of plate heat exchanger plates B stacked in turn, and the plate heat exchanger plates a and the plate heat exchanger plates B are arranged in a mirror image structure. As an example, a fluid medium enters the plate corner holes from the upper left, flows in the corner holes to the inter-plate flow channels, and then flows out after being collected in the lower right corner holes, and b fluid medium enters the plate corner holes from the lower left, flows in the corner holes to the inter-plate flow channels, and then flows out after being collected in the lower right corner holes. Therefore, in general, the fluid medium a goes up left and down right, and the fluid medium b goes in left and down and up right, and cross in and out.

After the fluid medium a and the fluid medium b enter the plate-to-plate flow channels which are staggered with each other, the flow process inside the plate-to-plate flow channels is shown in fig. 5 and fig. 6, the fluid medium a and the fluid medium b which are back-to-back are divided into n flow paths which are turned back and forth (where, n is 3), and the flow directions of the fluids in the corresponding flow paths are completely opposite, so that pure countercurrent heat exchange is realized, after the fluid medium a and the fluid medium b are divided into n flow paths in a single flow channel, the flow area is about 1/n when the fluid medium is not divided, and the flow speed of the flow paths between the plates is about n times when the fluid medium is not divided, so that the membrane heat transfer coefficient between the plates is greatly improved, and the overall heat exchange effect of the heat exchanger is enhanced. It can be understood that, one fluid medium is up, the other fluid medium is down, cold and hot fluids are respectively in the respective channels to perform the bypass flow, the bypass flow paths of the cold and hot sides are completely opposite, the pure countercurrent heat exchange of the channels between the plates can be realized, and the maximum heat exchange capacity of the pure countercurrent can be realized by the crossed in and out.

In the present embodiment, since the plate a and the plate B of the plate heat exchanger are mirror images, fig. 1, fig. 3, and fig. 5 are schematic diagrams of the structure and application of the plate a of the plate heat exchanger, and fig. 2, fig. 4, and fig. 6 are schematic diagrams of the structure and application of the plate B of the plate heat exchanger. In the following, a plate heat exchanger plate a is taken as an example, and a plate heat exchanger plate B can be implemented according to the structure of the plate heat exchanger plate a.

Referring to fig. 1, 3 and 5, a plate heat exchanger plate sheet a according to some embodiments of the present invention includes a plate main body 1, where the plate main body 1 includes a first surface and a second surface that are opposite to each other.

The corners of the plate-shaped main body 1 are respectively provided with a first through hole 11, a second through hole 12, a third through hole 13 and a fourth through hole 14, the first through hole 11 and the third through hole 13 are located on a first diagonal line, and the second through hole 12 and the fourth through hole 14 are located on a second diagonal line. The plate-shaped main body 1 may be a rectangular thin metal plate with a thickness of 0.5mm to 1mm, and the first flow through hole 11, the second flow through hole 12, the third flow through hole 13 and the fourth flow through hole 14 may be circular corner holes, which are used as inlets and outlets for fluid media to enter and exit a flow channel between plates of the plate heat exchanger.

Further, the first surface of the plate-like body 1 may be provided with a gasket 2, for example, the first surface of the plate-like body 1 is provided with an annular gasket 21, and the first through-hole 11, the second through-hole 12, the third through-hole 13 and the fourth through-hole 14 are all located at an inner ring of the annular gasket 21. The second surface of the plate-like body 1 is of a planar structure.

The second flow through hole 12 and the fourth flow through hole 14 are respectively provided with a first isolation gasket 22 and a second isolation gasket 23 at the periphery of the first surface of the plate-shaped body 1, and two ends of the first isolation gasket 22 and the second isolation gasket 23 are respectively connected with the annular gasket 21, in this embodiment, the first flow through hole 11 and the third flow through hole 13 are used as flow through holes of a medium, which may be a medium a or a medium b, where the medium a may be a hot liquid medium, and the medium b may be a cold liquid medium, and of course, the temperature of the cold and hot temperatures is relatively speaking, and the type and the temperature of the cold liquid medium may be set according to actual requirements. The first isolation seal 22 and the second isolation seal 23 may be arc-shaped segments, which perform an isolation function to seal the fluid medium in the flow channel and prevent the fluid medium from leaking to the outside.

Furthermore, the second flow hole 12 is provided with a first annular gasket 24 at the periphery of the first surface of the plate-like body 1, and the fourth flow hole 14 is provided with a second annular gasket 25 at the periphery of the first surface of the plate-like body 1. The first annular sealing gasket 24 and the second annular sealing gasket 25 may be independent annular structures, or may be formed by matching part of the annular sealing gasket 21 with an arc-shaped sealing gasket, which may further improve the isolation effect, better realize the sealing of the fluid medium in the flow channel, and prevent the fluid medium from leaking to the outside. Preferably, the first surface of the plate-like body 1 is also provided with corrugations, it being understood that in the central area of the plate-like body 1 there are pressed corrugations, which are the main heat exchange areas, which corrugations may be herringbone corrugations, but also corrugations of other configurations are possible.

Referring to fig. 3, preferably, the first surface of the plate-shaped body 1 is provided with a flow dividing member, which includes at least one first flow dividing gasket 26 and at least one second flow dividing gasket 27.

Wherein, the upper end of at least one first split seal 26 is connected with the section of the annular seal 21 located between the first through hole 11 and the second through hole 12, and the lower end thereof extends downwards but is not connected with the lower end of the annular seal 21, and the lower end of at least one second split seal 27 is connected with the section of the annular seal 21 located between the third through hole 13 and the fourth through hole 14, and the upper end thereof extends upwards but is not connected with the upper end of the annular seal 21, so as to define a plurality of flow areas 3 on the first surface of the plate-shaped body 1.

Further, the at least one first split gasket 26 may include a first longitudinal section 261 connected to an upper end of the annular gasket 21, a first inclined section 262 connected to the first longitudinal section 261 and extending obliquely to the first direction, and a second longitudinal section 263 connected to the first inclined section 262 apart from the first longitudinal section 261 and extending downward, the second longitudinal section 263 not being connected to a lower end of the annular gasket 21 to form a fluid medium flow passage hole.

The at least one second split gasket 27 may include a third longitudinal section 271 connected to the lower end of the annular gasket 21, a second inclined section 272 connected to the third longitudinal section 271 and extending obliquely in the second direction, and a fourth longitudinal section 273 connected to the second inclined section 272 and extending upward away from the third longitudinal section 271. The fourth longitudinal segment 273 is not connected to the upper end of the annular seal 21 to form a fluid medium flow passage. Note that the first direction here is the left direction of fig. 3, and the second direction is the right direction of fig. 3.

Preferably, the first longitudinal segment 261 and the third longitudinal segment 271 are located on the same straight line, and may be the middle line position of the upper and lower ends of the plate-shaped body 1, and the lengths of the two may be equal. Of course, in some embodiments, the first longitudinal segment 261 and the third longitudinal segment 271 may be offset.

Preferably, the first inclined section 262 and the second inclined section 272 are arranged in parallel, and the lengths of the two sections may be equal, or the two sections may be arranged in a staggered manner, and the arrangement may be performed according to actual requirements, which is not specifically limited herein.

Further, the second longitudinal section 263 is disposed in parallel with the fourth longitudinal section 273, in this embodiment, the length of the second longitudinal section 263 is the same as that of the fourth longitudinal section 273, the length of the second longitudinal section 263 is greater than that of the first longitudinal section 261 and the first inclined section 262, and correspondingly, the length of the fourth longitudinal section 273 is greater than that of the third longitudinal section 271 and the second inclined section 272.

In the present embodiment, the gasket 2 may include the above-described annular gasket 21, first separation gasket 22, second separation gasket 23, first annular gasket 24, second annular gasket 25, and flow dividing member, which may be an integral structure.

Referring to fig. 1, in some embodiments, the first surface of the plate-shaped body 1 is provided with an annular groove 15 for mounting an annular gasket 21, and first and second separation grooves 16 and 17 for mounting first and second separation gaskets 22 and 23, respectively, and first and second annular grooves 18 and 19 for mounting first and second annular gaskets 24 and 25, respectively. Further, the first surface of the plate-shaped body 1 is provided with a mounting groove 10 for mounting the flow divider. The annular groove 15, the first isolation groove 16, the second isolation groove 17, the first annular groove 18, the second annular groove 19 and the mounting groove 10 may be in a mutually communicating structure so as to facilitate the insertion and fixation of the gasket 2.

In some embodiments, the mounting groove 10 may include a first longitudinal groove 101 connecting upper ends of the annular grooves 15, a first groove 102 and a second groove 103 connected to the first longitudinal groove 101 and extending downward to the first direction and the second direction, respectively, a second longitudinal groove 104 connecting lower ends of the annular grooves 15, a third groove 105 and a fourth groove 106 connected to the first longitudinal groove 101 and extending upward to the first direction and the second direction, respectively, a first fixing groove 107 connecting the first groove 102 and the third groove 105, and a second fixing groove 108 connecting the second groove 103 and the fourth groove 106.

It is understood that the first longitudinal groove 101 and the second longitudinal groove 104 can be installed for the first longitudinal section 261 or the third longitudinal section 271, the first groove 102 and the second groove 103 can be installed for the first inclined section 262 or the second inclined section 272, and the first fixing groove 107 can be installed for the second longitudinal section 263 or the fourth longitudinal section 273, so as to adjust the installation state of the flow dividing member. Of course, in some embodiments, the mounting slots may be configured to correspond to the configuration of the diverter.

In some embodiments, the sealing gasket 2 may also be an integral structure with the plate-like body 1, such as being integrally formed in a mold.

Referring to fig. 5, due to the arrangement of the flow dividing member, the plate-shaped body 1 may form a plurality of flow regions 3, for example, the flow regions may include a first region 31, a second region 32, and a third region 33 that are communicated with each other, and the flow directions of the fluid medium in the three regions are sequentially reversed, which are baffling heat exchange regions, and the surface of the plate-shaped body a may have a large membrane heat transfer coefficient, so as to implement efficient heat exchange, and under a severe working condition, the number of plates of the plate heat exchanger may be reduced, and the overall size scale of the plate heat exchanger may be reduced.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A plate heat exchanger plate, comprising a plate-like body (1), the plate-like body (1) comprising a first surface and a second surface, which are opposite to each other;

the corner of the plate-shaped main body (1) is respectively provided with a first flow through hole (11), a second flow through hole (12), a third flow through hole (13) and a fourth flow through hole (14), the first flow through hole (11) and the third flow through hole (13) are positioned on a first diagonal, and the second flow through hole (12) and the fourth flow through hole (14) are positioned on a second diagonal;

an annular sealing gasket (21) is arranged on the first surface of the plate-shaped main body (1), and the first flow through hole (11), the second flow through hole (12), the third flow through hole (13) and the fourth flow through hole (14) are all positioned on the inner ring of the annular sealing gasket (21);

the second flow through hole (12) and the fourth flow through hole (14) are respectively provided with a first isolation sealing gasket (22) and a second isolation sealing gasket (23) at the periphery of the first surface of the plate-shaped main body (1), and two ends of the first isolation sealing gasket (22) and the second isolation sealing gasket (23) are respectively correspondingly connected with the annular sealing gasket (21);

a flow dividing piece is arranged on the first surface of the plate-shaped main body (1), and comprises at least one first flow dividing sealing gasket (26) and at least one second flow dividing sealing gasket (27);

the upper end of the at least one first split seal (26) is connected with a section of the annular seal (21) between the first flow through hole (11) and the second flow through hole (12) and the lower end thereof extends downwards, and the lower end of the at least one second split seal (27) is connected with a section of the annular seal (21) between the third flow through hole (13) and the fourth flow through hole (14) and the upper end thereof extends upwards, so that the first surface of the plate-shaped body (1) is defined into a plurality of flow areas.

2. A plate heat exchanger plate according to claim 1, characterized in that the second flow through holes (12) are provided with a first annular gasket (24) at the periphery of the first surface of the plate-like body (1);

and a second annular sealing gasket (25) is arranged on the periphery of the first surface of the plate-shaped main body (1) of the fourth flow hole (14).

3. A plate heat exchanger plate according to claim 1, wherein the at least one first split gasket (26) comprises a first longitudinal section (261) connected with the annular gasket (21), a first inclined section (262) connected with the first longitudinal section (261) and extending obliquely in a first direction, a second longitudinal section (263) connected with the first inclined section (262) away from the first longitudinal section (261) and extending downwardly;

the at least one second split seal (27) comprises a third longitudinal section (271) connected to the annular seal (21), a second inclined section (272) connected to the third longitudinal section (271) and extending obliquely in a second direction, and a fourth longitudinal section (273) connected to the second inclined section (272) away from the third longitudinal section (271) and extending upward.

4. A plate heat exchanger plate according to claim 3, wherein the first longitudinal section (261) and the third longitudinal section (271) are located on the same line.

5. A plate heat exchanger plate according to claim 3, wherein the first slanted section (262) is arranged in parallel with the second slanted section (272).

6. A plate heat exchanger plate according to claim 3, wherein the second longitudinal section (263) is arranged in parallel with the fourth longitudinal section (273).

7. A plate heat exchanger plate according to claim 2, characterized in that the first surface of the plate-like body (1) is provided with an annular groove (15) for mounting the annular gasket (21); and a first separation groove (16) and a second separation groove (17) for mounting the first separation gasket (22) and the second separation gasket (23), respectively; and a first annular groove (18) and a second annular groove (19) for mounting the first annular seal (24) and the second annular seal (25), respectively.

8. A plate heat exchanger plate according to claim 7, wherein the first surface of the plate-like body (1) is provided with mounting grooves (10) for mounting of the flow splitters.

9. A plate heat exchanger plate according to claim 8, wherein the mounting groove (10) comprises a first longitudinal groove (101) connecting the upper ends of the annular grooves (15), a first groove (102) and a second groove (103) connected to the first longitudinal groove (101) and extending obliquely downwards in a first direction and a second direction, respectively;

the mounting groove (10) further comprises a second longitudinal groove (104) connected with the lower end of the annular groove (15), and a third groove (105) and a fourth groove (106) which are connected with the first longitudinal groove (101) and extend upwards in an inclined manner towards the first direction and the second direction respectively;

the mounting groove (10) further includes a first fixing groove (107) connecting the first groove (102) and the third groove (105), and a second fixing groove (108) connecting the second groove (103) and the fourth groove (106).

10. A plate heat exchanger plate according to claim 1, characterized in that the first surface of the plate-like body (1) is also provided with corrugations.

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