CN218296870U - Heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger - Google Patents

Abstract

The application provides a heat transfer board, heat transfer board are right, heat transfer board is restrainted and heat exchanger, the heat transfer board includes: the plate body, the interval is equipped with a plurality of archs on the plate body, every bellied top surface is the rectangle, protruding top surface is in projection on the plate body is located protruding bottom surface is in within the projection on the plate body, bellied side to bellied inside is sunken to form domes. The application provides a heat transfer board, heat transfer board right, heat transfer board bunch and heat exchanger simple structure, convenient to use effectively reduces the local stress of protruding structure, improves anti deformability, anti unstability ability, and the compressive capacity of heat transfer board is strong, and long service life is fit for using under high temperature or the higher operating mode environment of pressure differential.

Description

Heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger

Technical Field

The application relates to the technical field of plate heat exchangers, in particular to a heat exchange plate, a heat exchange plate pair, a heat exchange plate bundle and a heat exchanger.

Background

A welded plate type heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and is applied to the fields of chemical industry, petroleum, power, food and the like, and comprises a plurality of heat exchange plates, wherein a plurality of bulges are usually arranged on plate bodies of the heat exchange plates, different medium flow channels can be formed by the bulge structures of the heat exchange plates for heat exchange, as shown in figure 1, the heat exchanger is a structural schematic diagram of the existing heat exchange plate, a top surface 2-1 of the plate body 1 is a long circular bulge 2, when the bulges 2 of two oppositely arranged heat exchange plates are butted, a medium flow channel is formed between the heat exchange plates, and is limited by the top surface 2-1 structure of the bulge 2 of the heat exchange plate, when the top surfaces 2-1 of the bulges 2 of the two heat exchange plates are butted, point contact can be formed at the arc end point of the long circular shape, as shown in an area A1 in the figure, the stress at the position is concentrated, especially under the working condition of high temperature or pressure difference of the heat exchanger, the area can have overlarge local stress, so that the area has poor deformation resistance, poor instability resistance, poor stability and the heat exchanger can easily occur, and the heat exchanger can not normally operate, and the side surface of the existing heat exchange plate has limited pressure difference under the limited working condition of the high temperature or high pressure difference.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide a heat exchange plate, a heat exchange plate pair, a heat exchange plate bundle and a heat exchanger, so as to solve the related problems mentioned in the background art.

In a first aspect of the application, a heat exchanger plate is provided, comprising: the plate body, the interval is equipped with a plurality of archs on the plate body, every bellied top surface is the rectangle, protruding top surface is in projection on the plate body is located protruding bottom surface is in within the projection on the plate body, bellied side to bellied inside is sunken to form domes.

Furthermore, the included angle between the plane of the top edge of the side surface and the plane of the bottom edge of the side surface of the protrusion and the plate body is 110-140 degrees.

Further, the maximum distance between the side surface of the protrusion and the plane is 0.15mm to 0.8mm.

Further, the length direction of the top surface is parallel to the length direction of the plate body.

Further, the width of top surface is 4mm to 8mm, follows two that the width direction of plate body is adjacent protruding centre-to-centre spacing is 8mm to 18mm, follows two that the length direction of plate body is adjacent protruding top surface edge interval is 2.5mm to 6.5mm.

In a second aspect of the present application, a pair of heat exchange plates is provided, including two heat exchange plates as described in the first aspect, where the two heat exchange plates are oppositely disposed, the protrusions on the two heat exchange plates respectively abut against each other, and the edges of the two heat exchange plates facing the length direction are respectively connected, so as to form a first medium flow channel between the two heat exchange plates.

Furthermore, the corner of the plate body is provided with a limiting block facing the length direction, and the limiting block is positioned between the two heat exchange plates.

In a third aspect of the present application, a heat exchange plate bundle is provided, which includes a plurality of stacked heat exchange plate pairs as described in the second aspect, wherein the plate bodies of two adjacent heat exchange plate pairs respectively abut against each other, edges of the two adjacent heat exchange plate pairs facing the width direction are respectively connected, and a second medium flow channel is formed between the two adjacent heat exchange plate pairs.

Furthermore, a plurality of baffle plates are arranged on the side walls of the heat exchange plate bundle opposite to each other in the width direction of the plate body at intervals, and the baffle plates are arranged in a staggered manner in the length direction of the plate body.

In a fourth aspect of the present application, there is provided a heat exchanger comprising a bundle of heat exchange plates as described in the third aspect above.

As can be seen from the above, the heat exchange plate pair, the heat exchange plate bundle and the heat exchanger provided by the present application provide a foundation for forming a medium flow channel by arranging a plurality of protrusions on the plate body at intervals; the top surfaces of the bulges are rectangular, and compared with the oblong top surfaces in the prior art, the area of the top surfaces is increased under the condition of equal length, so that the contact area of the bulges when abutted is further increased, the unit area stress is small, and the pressure-bearing capacity of the heat exchange plate is improved; when the bulges of the two oppositely arranged heat exchange plates are abutted to form the medium flow channel, the top surfaces of the bulges on the two heat exchange plates form line contact on the short edge of the rectangular top surface, so that the contact area is increased relative to the point contact of the long circular top surface, the local stress of the area is reduced, the stress concentration is avoided, and the deformation resistance and the instability resistance of the area are improved; the distances between the edges of the top surfaces of two adjacent bulges are consistent due to the rectangular short edges, so that the medium pressure borne by the short edges is more uniform; the projection of the convex top surface on the plate body is positioned in the projection of the convex bottom surface on the plate body, namely the size of the convex top surface is smaller than that of the convex bottom surface, and the side surface of the convex is concave arch-shaped, so that the pressure bearing capacity of the back surface of the convex can be improved when the pressure of the medium flow channel is higher, and the deformation resistance of the convex is improved; the heat exchange plate, the heat exchange plate pair, the heat exchange plate bundle and the heat exchanger are simple in structure and convenient to use, the local stress of the protruding structures is effectively reduced, the deformation resistance and the instability resistance are improved, the pressure resistance of the heat exchange plate is strong, the service life is long, and the heat exchange plate is suitable for being used in a high-temperature or high-pressure-difference working condition environment.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the related art, the drawings needed to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a heat exchange plate in the related art;

FIG. 2 is a schematic structural diagram of a heat exchange plate according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 2;

FIG. 4 is a schematic view of a projection of a protrusion on a plate body according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a heat exchanger plate bundle according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a heat exchange plate bundle in an embodiment of the present application.

Reference numerals: 1. a plate body; 2. a protrusion; 2-1, top surface; 2-2, lateral surface; 2-3, bottom surface; 2-4, plane; 3. a first medium flow passage; 4. a second medium flow passage; 5. a limiting block; 6. a baffle plate; 7. and a pair of heat exchange plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings in combination with specific embodiments.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should have a general meaning as understood by those having ordinary skill in the art to which the present application belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the present application is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The plate heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and is applied to the fields of chemical industry, petroleum, power, food and the like.

The heat exchanger comprises a plurality of heat exchange plates, a plurality of bulges are usually arranged on plate bodies of the heat exchange plates, different medium flow channels can be formed for heat exchange depending on the bulge structures of the plurality of heat exchange plates, as shown in figure 1, the structure schematic diagram of the existing heat exchange plates is shown, the direction L in the figure is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, the plate body 1 is provided with the bulge 2-1 with the top surface 2-1 in the shape of a long circle, the long circle is transited smoothly and is easy to process, when the bulges 2 of two opposite heat exchange plates are abutted, a medium flow channel is formed between the heat exchange plates, the heat exchange plates are limited by the structure of the top surfaces 2-1 of the bulges 2, when the bulges 2-1 of the two heat exchange plates are abutted, point contact can be formed at the arc end points of the long circle, as shown in A1 area in the figure, the stress at the position is concentrated, especially under the working condition of high temperature or high pressure difference, the local stress in the area is overlarge, the deformation resistance and the instability of the area is poor, the leakage fault and the heat exchanger can not normally operate, in the limited working condition, and the pressure difference of the heat exchange plate is high-pressure difference.

Hereinafter, the technical solution of the present application will be described in detail by specific examples with reference to fig. 2 to 6.

In some embodiments of the present application, there is provided a heat exchanger plate, as shown in fig. 2, 3 and 4, comprising: the plate body 1, the interval is equipped with a plurality of archs 2 on the plate body 1, every the top surface 2-1 of arch 2 is the rectangle, 2-1 projections of 2 top surfaces of arch are in on the plate body 1 is located 2-3 bottom surfaces of arch are in the projection on the plate body 1, 2-2 of the side of arch 2 to the sunken domes that forms in arch 2.

The plurality of protrusions 2 are arranged on the plate body 1 at intervals to provide a basis for forming the medium flow channel, and the protrusions 2 can be integrally formed with the plate body 1 through a stamping process, which is not limited in particular.

The top surface 2-1 of the bulge 2 is rectangular, compared with the oblong top surface 2-1 in the prior art, the area of the top surface 2-1 is increased under the condition of equal length, the contact area of the bulge 2 is further increased when the bulge 2 abuts against the top surface, the unit area stress is small, and therefore the pressure bearing capacity of the heat exchange plate is improved.

When the bulges 2 of the two oppositely arranged heat exchange plates are abutted to form a medium flow channel, the top surfaces 2-1 of the bulges 2 on the two heat exchange plates form line contact at the short edge of the rectangle, as shown in an area A2 in the figure, the contact area is increased relative to the point contact of the oblong top surface 2-1, the local stress of the area is reduced, the stress concentration is avoided, and the deformation resistance and the instability resistance of the area are improved; and the rectangular short side enables the top surface edge distance of two adjacent bulges 2 to be consistent, so that the medium pressure on the short side is more uniform.

As shown in fig. 4, S1 is a projection of the top surface 2-1 of the protrusion 2 on the board body 1, S2 is a projection of the bottom surface 2-3 of the protrusion 2 on the board body 1, and S1 is located within S2, that is, the size of the top surface 2-1 of the protrusion 2 is smaller than the size of the bottom surface 2-3 of the protrusion 2, and the side surface 2-2 of the protrusion 2 can support the top surface 2-1, so that the stability is good, the strength of the protrusion 2 can be improved, and the deformation resistance is improved.

The side surface 2-2 of the bulge 2 is sunken towards the inner part of the bulge 2 to form an arch structure, compared with the side surface 2-2 in the form of an inclined surface, the strength of the bulge 2 can be improved, the pressure resistance of the bulge 2 is further enhanced, the pressure bearing capacity of the back surface of the bulge 2 is effectively improved, and the bulge 2 is not easy to deform or unstable.

Meanwhile, the arched structure of the side 2-2 of each protrusion 2 can also adjust the flow of the medium flow channel, as shown in fig. 5, two heat exchange plates of the heat exchange plate pair 7 are arranged oppositely, the protrusions 2 are abutted, the side 2-2 of the adjacent protrusion 2 forms the first medium flow channel 3, the side 2-2 of each protrusion 2 is recessed inwards to form an inclined plane compared with the side 2-2, so that the sectional area of the first medium flow channel 3 is increased, the flow ratio of the cold side and the hot side of each heat exchange plate can be improved, and the heat exchange effect is improved.

Relevant experiments show that the heat exchange plate with the original oblong top surface 2-1 can be used under the working conditions of the temperature of 400 ℃ or the pressure difference of 4MPa, while the heat exchange plate of the embodiment can be used under the working conditions of the temperature of 600-980 ℃ and the pressure difference of 1MPa or under the working conditions of the temperature of 400 ℃ and the pressure difference of 11MPa, so that the application range is greatly expanded, and particularly under the working conditions of bearing larger pressure on the back surface of the protrusion 2.

The heat exchange plate is simple in structure, convenient to use, capable of effectively reducing the local stress of the 2-shaped protruding structures, capable of improving the deformation resistance and the instability resistance, strong in pressure resistance, long in service life and suitable for being used in the high-temperature or high-pressure-difference working condition environment.

In some embodiments, as shown in fig. 3, the plane 2-4 in which the top edge of the side surface 2-2 and the bottom edge of the side surface 2-2 of the protrusion 2 are located forms an angle of 110 ° to 140 ° with the plate body 1.

As shown in fig. 3, the thick line in the figure represents a cross section of a plane 2-4 where the top edge of the side face 2-2 and the bottom edge of the side face 2-2 of the protrusion 2 are located, an included angle between the plane 2-4 and the plate body 1 is α, α is 110 ° to 140 °, for example 120 °, specifically, without limitation, the strength of the protrusion 2 can be ensured, when α is too small, the protrusion 2 is not easy to process, and when α is too large, the strength of the protrusion 2 is lower.

In some embodiments, as shown in FIG. 3, the maximum separation of the sides 2-2 of the protrusions 2 from the plane 2-4 is 0.15mm to 0.8mm.

As shown in fig. 3, the maximum distance between the side surface 2-2 of the protrusion 2 and the plane 2-4 is L3, and the distance L3 is 0.15mm to 0.8mm, for example, 0.2mm, and is not limited specifically, so that the strength of the protrusion 2 can be effectively improved, the pressure resistance of the protrusion 2 can be further enhanced, and the flow ratio of the hot plate on the cold and hot sides can be improved, where the protrusion 2 is not easily machined if L3 is too long, and the strength of the protrusion 2 is lower if L3 is too short.

In some embodiments, as shown in fig. 2, the length direction of the top surface 2-1 is parallel to the length direction of the plate body 1.

As shown in fig. 2, the direction L is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, and the length direction of the top surface 2-1 is parallel to the length direction of the plate body 1, so that the heat transfer and the resistance can be balanced.

In some embodiments, as shown in fig. 2, the width of the top surface 2-1 is 4mm to 8mm, the center distance between two adjacent protrusions 2 along the width direction of the plate body 1 is 8mm to 18mm, and the edge distance between the top surfaces 2-1 of two adjacent protrusions 2 along the length direction of the plate body 1 is 2.5mm to 6.5mm.

The length of the top surface 2-1 may be 18mm to 48mm, for example 20mm, and the width may be 4mm to 8mm, for example 6mm, and the contact area when the protrusions 2 abut against each other may be ensured, without limitation, so as to improve the pressure-bearing capacity of the heat exchange plate.

As shown in fig. 2, the distance between the top surfaces 2-1 of two adjacent protrusions 2 in the length direction of the plate body 1 is L1, L1 is 2.5mm to 6.5mm, for example, 5mm, the distance between the centers of two adjacent protrusions 2 in the width direction of the plate body 1 is L2, L2 is 8mm to 18mm, for example, 10mm, and the flow rate of the medium flow channel can be ensured, so as to improve the heat exchange effect of the heat exchange plate.

In some embodiments of the present application, a heat exchange plate pair 7 is provided, as shown in fig. 5, including two heat exchange plates as described in any one of the above embodiments, which are oppositely disposed, where the protrusions 2 on the two heat exchange plates are respectively abutted, and edges of the two heat exchange plates facing the length direction are respectively connected, and a first medium flow channel 3 is formed between the two heat exchange plates.

As shown in fig. 5, two heat exchange plates in the heat exchange plate pair 7 are arranged oppositely, top surfaces 2-1 of the protrusions 2 on the two heat exchange plates are respectively abutted, and side surfaces 2-2 of adjacent protrusions 2 form a first medium flow passage 3.

As shown in fig. 6, the direction L in the figure is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, the length direction of the top surface 2-1 is parallel to the length direction of the plate body 1, edges of the two heat exchange plates facing the length direction are respectively connected, that is, long sides of the two heat exchange plates are connected, for example, welded, and not limited specifically, and short sides of the two heat exchange plates form an inlet and an outlet of the first medium flow channel 3, so that the fluid in the first medium flow channel 3 can flow along the length direction as a whole.

In some embodiments, as shown in fig. 6, a limiting block 5 facing the length direction is disposed at a corner of the plate body 1, and the limiting block 5 is located between two heat exchange plates.

The distance between two heat transfer boards of 7 can be restricted to protruding 2 of stopper 5 cooperation, ensures 3 heights of first medium runner, improves the stability and the leakproofness of 1 edge of plate body.

In some embodiments of the present application, a heat exchange plate bundle is provided, as shown in fig. 5 and fig. 6, including a plurality of stacked heat exchange plate pairs 7 as described in any one of the above embodiments, the plate bodies 1 of two adjacent heat exchange plate pairs 7 respectively abut against each other, edges of the two adjacent heat exchange plate pairs 7 facing to the width direction are respectively connected, and a second medium flow channel 4 is formed between the two adjacent heat exchange plate pairs 7.

As shown in fig. 5, the heat exchange plate pairs 7 in the heat exchange plate bundle are stacked, the plate bodies 1 of the two heat exchange plate pairs 7 are respectively abutted, and a wave-shaped second medium flow passage 4 is formed between the heat exchange plate pairs 7.

As shown in fig. 6, the edges of two adjacent heat exchange plate pairs 7 facing the width direction are respectively connected, that is, the short sides of two heat exchange plate pairs 7 are connected, for example, welded, and the long sides of two heat exchange plate pairs 7 form the inlet and the outlet of the second medium flow channel 4, so that the fluid of the second medium flow channel 4 can flow in the width direction as a whole.

In some embodiments, as shown in fig. 6, a plurality of baffles 6 are provided at intervals on the opposite side walls of the heat exchange plate bundle in the width direction of the plate body 1, and the baffles 6 are arranged in a staggered manner along the length direction of the plate body 1.

The baffle plates 6 can separate the second medium flow passages 4, limit the fluid flow direction of the second medium flow passages 4, and change the flow path number of the fluid, thereby increasing the fluid flow time and improving the heat exchange effect, and the flow path of the fluid is 3 paths if the number of the baffle plates 6 is 2, for example.

In some embodiments of the present application, there is provided a heat exchanger comprising a bundle of heat exchange plates as described in any of the above embodiments.

The heat exchanger has simple structure and convenient use, and is suitable for being used in high-temperature or high-pressure difference working condition environments.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the context of the present application, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

Additionally, where details are set forth in order to describe example embodiments of the present application, it will be apparent to one skilled in the art that the present embodiments may be practiced without, or with variation of, these details. Accordingly, the description is to be regarded as illustrative instead of restrictive.

While the present application has been described in conjunction with embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present application are intended to be included within the scope of the present application.

Claims (10)

1. A heat exchanger plate, comprising:

the plate body, the interval is equipped with a plurality of archs on the plate body, every bellied top surface is the rectangle, protruding top surface is in projection on the plate body is located protruding bottom surface is in within the projection on the plate body, bellied side to bellied inside is sunken to form domes.

2. A heat exchanger plate according to claim 1, wherein the plane in which the lateral top edges and the lateral bottom edges of the bosses lie is at an angle of 110 ° to 140 ° to the plate body.

3. A heat exchanger plate according to claim 2, wherein the maximum distance between the sides of the bosses and the plane is 0.15mm to 0.8mm.

4. A heat exchanger plate according to claim 1, wherein the length direction of the top surface is parallel to the length direction of the plate body.

5. A heat exchanger plate according to claim 4, wherein the width of the top surface is 4mm to 8mm, the center-to-center distance between two adjacent protrusions in the width direction of the plate body is 8mm to 18mm, and the top surface edge distance between two adjacent protrusions in the length direction of the plate body is 2.5mm to 6.5mm.

6. A heat exchange plate pair, comprising two heat exchange plates according to any one of claims 1 to 5, wherein the protrusions of the two heat exchange plates are opposite to each other, and the edges of the two heat exchange plates facing the length direction are connected to each other, so as to form a first medium flow channel between the two heat exchange plates.

7. The pair of heat exchange plates according to claim 6, wherein a limiting block facing the length direction is disposed at a corner of the plate body, and the limiting block is located between the two heat exchange plates.

8. A heat exchanger plate bundle, comprising a plurality of stacked heat exchanger plate pairs according to any one of claims 6 to 7, wherein the plate bodies of two adjacent heat exchanger plate pairs are respectively abutted, and the widthwise edges of two adjacent heat exchanger plate pairs are respectively connected, thereby forming a second medium flow passage between two adjacent heat exchanger plate pairs.

9. The heat exchange plate bundle of claim 8, wherein a plurality of baffle plates are arranged at intervals on the side walls of the heat exchange plate bundle opposite to each other in the width direction of the plate body, and the baffle plates are arranged in a staggered manner in the length direction of the plate body.

10. A heat exchanger, characterized in that it comprises a bundle of heat exchange plates according to any one of claims 8-9.

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