CN116892856A - Heat exchange plate, sealing gasket and heat exchanger - Google Patents

Abstract

The application provides a heat exchange plate, a sealing gasket and a heat exchanger, wherein the heat exchange plate comprises: the plate body comprises a heat exchange area, an angle hole and a sealing area arranged around the heat exchange area or the angle hole, wherein the sealing area comprises a sealing groove arranged close to the heat exchange area or the angle hole and an edge cover arranged far away from the heat exchange area or the angle hole, and the edge cover comprises first wave crests and first wave troughs which are alternately arranged; a second crest is formed by downwards sinking one side of the first crest away from the sealing groove, and the height of the second crest is greater than or equal to half of the height of the first crest; and/or, a second trough is formed by upwards protruding one side of the first trough away from the sealing groove, and the height of the second trough is less than or equal to half of the height of the first crest. The heat exchange plate, the sealing gasket and the heat exchanger provided by the application have simple structures, and can effectively reduce the material elongation of the edge of the plate body, thereby avoiding the cracking of the edge of the plate, reducing the manufacturing difficulty and the manufacturing cost, being very suitable for manufacturing the high-strength low-elongation duplex stainless steel heat exchange plate and prolonging the service life.

Description

Heat exchange plate, sealing gasket and heat exchanger

Technical Field

The application relates to the technical field of heat exchange plates, in particular to a heat exchange plate, a sealing gasket and a heat exchanger.

Background

The gasket type detachable plate heat exchanger is composed of a plurality of heat exchange plates which are overlapped and abutted, a flow channel of cold and hot fluid is formed between the heat exchange plates, heat exchange of the cold and hot fluid is realized, the structure is compact, the maintenance and the cleaning are easy, a flexible flow combined structure is realized, the heat transfer efficiency is high, the manufacturing cost is low, the application field is wider and wider, especially in the fields of petrochemical industry, electric power and other high-pressure application fields, higher requirements are put on the sealing performance of the gasket type detachable plate heat exchanger, therefore, the development of a double-phase stainless steel heat exchanger product with high strength, good corrosion resistance and high pressure resistance is an important research and development direction in recent years, however, the edge formed after the plate material is subjected to cold work hardening, and compared with the conventional stainless steel with 304L, 316L and the like, the edge can be cracked when the plate material is manufactured, the gasket type detachable plate heat exchanger becomes one of main technical barriers affecting the stamping forming quality, and the application of the gasket type detachable plate heat exchanger in different structures is restrained, and the cracking of the plate edge of the heat exchanger is required to be effectively reduced.

Disclosure of Invention

In view of the above, the present application is directed to a heat exchange plate, a gasket and a heat exchanger for solving the related problems mentioned in the background art.

In a first aspect of the application, there is provided a heat exchanger plate comprising: the plate body comprises a heat exchange area, an angular hole and a sealing area arranged around the heat exchange area or the angular hole, wherein the sealing area comprises a sealing groove arranged close to the heat exchange area or the angular hole and an edge pack arranged far away from the heat exchange area or the angular hole, and the edge pack comprises first wave crests and first wave troughs which are alternately arranged; a second wave crest is formed by downwards sinking the side, away from the sealing groove, of the first wave crest, and the height of the second wave crest is greater than or equal to half of the height of the first wave crest; and/or, a second trough is formed by upwards protruding one side of the first trough away from the sealing groove, and the height of the second trough is less than or equal to half of the height of the first crest.

Further, the length of the first peak is greater than or equal to 5mm; the length of the first trough is greater than or equal to 5mm.

Further, the second peak has a length greater than or equal to 2mm and less than or equal to half the length of the edge wrap; and/or the length of the second trough is greater than or equal to 2mm and less than or equal to half the length of the edge wrap.

Further, the length of the second wave crest is equal to the length of the second wave trough.

Further, the edge bag further comprises a plurality of eye-splice connecting areas which are arranged at intervals, wherein each eye-splice connecting area comprises a third trough and third wave crests positioned on two sides of each third trough, and the height of each third wave crest is equal to that of each first wave crest; and a fourth wave crest is formed by downwards sinking one side of the third wave crest far away from the sealing groove, and the height of the fourth wave crest is greater than or equal to half of the height of the third wave crest.

Further, the width of one side of the third trough close to the sealing groove is equal to the width of the first trough, the width of one side of the third trough far away from the sealing groove is larger than the width of one side of the third trough close to the sealing groove, and the length of the fourth crest is larger than the length of the second crest.

Further, a fourth trough is formed by protruding upwards from one side of the third trough away from the sealing groove, the height of the fourth trough is smaller than or equal to half of the height of the third crest, and the height difference between the fourth trough and the third crest is larger than or equal to 2.5mm.

In a second aspect of the present application, there is provided a gasket for cooperation with the sealing area of the heat exchange plate according to the first aspect, the sealing area including a sealing groove and a plug-in connection area, the gasket including a sealing strip for cooperation with the sealing groove and a plurality of plugs, the plugs being connected at intervals to the periphery of the sealing strip for cooperation with the plug-in connection area; the eye-splice is mountain style of calligraphy eye-splice, including connecting the first location strip of sealing strip, and be located the second location strip that first location strip both sides and interval set up, the second location strip is including being close to the first location portion of sealing strip and keeping away from the second location portion of sealing strip, the thickness of first location portion is greater than the thickness of second location portion.

Further, the first positioning strip comprises a third positioning part close to the sealing strip and a fourth positioning part far away from the sealing strip, and the width of the fourth positioning part is larger than that of the third positioning part.

In a third aspect of the present application, there is provided a heat exchanger comprising alternately stacked first heat exchange plates, which are the heat exchange plates according to the first aspect above, and second heat exchange plates, which are obtained by vertically rotating the first heat exchange plates by 180 degrees around the center of the first heat exchange plates; a gasket as described in the second aspect is provided between the adjacent first heat exchange plate and the second heat exchange plate.

From the above, it can be seen that the heat exchange plate, the sealing gasket and the heat exchanger provided by the application comprise a plate body, wherein the plate body comprises a heat exchange area and a sealing area arranged around the heat exchange area, the heat exchange area is used for fluid heat exchange, and the sealing area is used for sealing between the heat exchange plates; the sealing area comprises a sealing groove close to the heat exchange area and an edge package far away from the heat exchange area, the sealing groove is used for bearing the sealing gasket, the edge package is used for forming an edge support in intermittent contact, the sealing of the sealing gasket of the heat exchange plate is ensured, and the edge package comprises first wave crests and first wave troughs which are alternately arranged; the second wave crest is formed by downwards sinking the side, far away from the sealing groove, of the first wave crest, the wave crest height of the edge is reduced, the unfolding length of the wave crest at the edge is reduced, namely, the material elongation is reduced, the material is easier to punch and form, and further cracking at the edge is avoided; by setting the height of the second wave crest to be greater than or equal to half of the height of the first wave crest, the overlarge drop of the first wave crest and the second wave crest is avoided, so that the transitional slope between the first wave crest and the second wave crest is overlarge, on one hand, the forming difficulty is increased, and on the other hand, the edge wrapping length is increased, so that the area of a non-heat exchange area of the heat exchange plate is increased, and the material utilization rate is reduced; similarly, a second trough is formed on one side of the first trough far away from the sealing groove in a protruding way, which is equivalent to reducing the trough depth of the edge, and the unfolding length of the corrugation at the edge is reduced, namely, the material elongation is reduced, so that the material is easier to punch and form, and further cracking at the edge is avoided; by setting the height of the second trough to be less than or equal to half of the height of the first trough, the overlarge drop of the first trough and the second trough is avoided, so that the transitional slope between the first trough and the second trough is overlarge, on one hand, the forming difficulty is increased, on the other hand, the edge covering length is increased, the area of a non-heat exchange area of the heat exchange plate is increased, and the material utilization rate is reduced; the heat exchange plate, the sealing gasket and the heat exchanger are simple in structure, and can effectively reduce the material elongation of the edge of the plate body, so that the edge cracking of the plate is avoided, the manufacturing difficulty and the manufacturing cost are reduced, the heat exchange plate is very suitable for manufacturing the high-strength low-elongation duplex stainless steel heat exchange plate, and the service life is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.

Fig. 1 is a schematic structural view of a first heat exchange plate according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic perspective view of the structure shown in FIG. 1A;

FIG. 4 is a schematic cross-sectional view at B-B in FIG. 2;

FIG. 5 is a schematic cross-sectional view at C-C of FIG. 2;

FIG. 6 is a schematic view showing a partial structure of a first gasket according to an embodiment of the present application;

FIG. 7 is a schematic perspective view of FIG. 6;

FIG. 8 is a schematic view of the gasket of FIG. 6 mated with the heat exchanger plate of FIG. 2;

FIG. 9 is a schematic perspective view of FIG. 8;

FIG. 10 is a schematic view showing a partial structure of a second heat exchange plate according to an embodiment of the present application;

fig. 11 is a schematic partial perspective view of a second gasket according to an embodiment of the present application.

Reference numerals: 1. a plate body; 2. a heat exchange area; 3. a sealing region; 4. sealing grooves; 5. edge wrapping; 6. an angular aperture; 5-1, a first peak; 5-2, a first trough; 5-3, a second peak; 5-4, second trough; 5-5, a plug-in connection area; 5-6, a third crest; 5-7, a third trough; 5-8, a fourth peak; 5-9, fourth trough; 6. a sealing strip; 7. inserting and buckling; 8. a first positioning bar; 8-1, a third positioning part; 8-2, a fourth positioning part; 9. a second positioning strip; 9-1, a first positioning portion; 9-2, a second positioning part; 10. and a cross beam.

Detailed Description

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

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The gasket type detachable plate heat exchanger consists of a plurality of heat exchange plates which are overlapped and offset, a flow channel for cold fluid and hot fluid is formed between the heat exchange plates, so that heat exchange of the cold fluid and the hot fluid is realized.

In the prior art, most of detachable plate heat exchangers can improve the sealing effect of the heat exchange plates by improving the material of plate sealing grooves and sealing gaskets or adopting a full-bonding rubber cushion mode, and furthermore, some products completely rely on single-side welding or double-side welding to solve the sealing problem of higher pressure working conditions; for adopting half welding or full welding mode, firstly product unilateral or two sides can not wash, secondly manufacturing cost is very high, and the cost of changing spare part is higher, has become the bottleneck that current gasket formula detachable plate heat exchanger used in many high pressure operating mode, and in addition, the material cost and the corrosion resistance of current gasket formula detachable plate heat exchanger slab have also made the application of gasket formula detachable plate heat exchanger limited.

In the process of realizing the application, it is found that for the duplex stainless steel with high strength and high corrosion resistance, because the edges formed after the plate material is uncoiled are hardened by cold working, or tiny burrs appear on the edges, and compared with the conventional stainless steel such as 304 and 316L, the edges can crack when the detachable plate heat exchanger plate is manufactured, which becomes one of the main technical barriers affecting the stamping forming quality and restricts the application of the detachable plate heat exchanger plate in the detachable plate heat exchanger plate with different structures, therefore, a heat exchange plate capable of effectively reducing the cracking of the edges of the plate is needed.

In order to solve the problem of cracking of the edge package of the detachable plate heat exchanger, the related technology can set a ripple structure with variable slope at the edge of the edge package, so that edge formation is easier, but for a plate sheet such as double-phase stainless steel with high strength and low forming performance, the slope of the edge package needs to be further reduced to solve the problem of cracking of the plate sheet edge package, the design of reducing the slope is limited by ripple pitch, cracking cannot be better avoided, and increasing the edge package pitch can lead to increase of the inserting and buckling opening, so that the sealing performance of the heat exchanger is reduced; in addition, the depth of the edge wrapping corrugation is not changed, and the smaller the crest width is, the higher the stamping difficulty is, the problem of forming quality is easily caused, and the popularization and application of the material in the field of the gasket type detachable plate heat exchanger are limited.

The following describes the technical solution of the present application in detail by means of specific embodiments in conjunction with fig. 1 to 11.

In some embodiments of the application there is provided a heat exchanger plate, as shown in figures 1 to 5, comprising: a plate body 1, wherein the plate body 1 comprises a heat exchange area 2, an angular hole 6 and a sealing area 3 arranged around the heat exchange area 2 or the angular hole 6, the sealing area 3 comprises a sealing groove 4 arranged close to the heat exchange area 2 or the angular hole 6 and an edge ladle 5 arranged far away from the heat exchange area 2 or the angular hole 6, and the edge ladle 5 comprises first wave crests 5-1 and first wave troughs 5-2 which are alternately arranged; a second wave crest 5-3 is formed by downwards sinking the side, far away from the sealing groove 4, of the first wave crest 5-1, and the height of the second wave crest 5-3 is greater than or equal to half of the height of the first wave crest 5-1; and/or, a second trough 5-4 is formed by upwards protruding one side of the first trough 5-2 away from the sealing groove 4, and the height of the second trough 5-4 is less than or equal to half of the height of the first crest 5-1.

As shown in fig. 1, the heat exchange plate comprises a plate body 1, wherein the plate body 1 is rectangular, and has a thickness of 0.4mm-1.0mm, for example, without limitation; the plate body 1 comprises a heat exchange area 2, corner holes 6 and a sealing area 3 arranged around the heat exchange area 2 or the corner holes 6, wherein the heat exchange area 2 is used for fluid heat exchange, the sealing area 3 is used for sealing between the heat exchange plates, and corner holes 6 are arranged at four corners of the plate body 1 and used for fluid in and out; the sealing area 3 comprises a sealing groove 4 close to the heat exchange area 2 or the corner hole 6 and an edge ladle 5 far away from the heat exchange area 2 or the corner hole 6, the sealing groove 4 is used for bearing a sealing gasket, the edge ladle 5 is used for forming an edge support in intermittent contact, sealing of the sealing gasket of the heat exchange plate is guaranteed, and the edge ladle 5 comprises first wave crests 5-1 and first wave troughs 5-2 which are alternately arranged.

As shown in fig. 2 and 3, the side of the first crest 5-1 far away from the sealing groove 4 is recessed downwards to form a second crest 5-3, which is equivalent to reducing the crest height of the edge, and the unfolding length of the corrugation at the edge is reduced, namely the material elongation is reduced, so that the material is easier to punch and form, and further cracking at the edge is avoided; as shown in fig. 4 and 5, H1 represents the height of the first peak 5-1, H2 represents the height of the second peak 5-3, H0 represents half of the height of the first peak 5-1, and by setting the height of the second peak 5-3 to be greater than or equal to half of the height of the first peak 5-1, the drop of the first peak 5-1 and the second peak 5-3 is prevented from being excessively large, so that the transitional slope between the first peak 5-1 and the second peak 5-3 is excessively large, on one hand, the forming difficulty is increased, and on the other hand, the length of the edge ladle 5 is increased, so that the area of the heat exchange plate non-heat exchange area is increased, and the material utilization rate is reduced.

As shown in fig. 2 and 3, the second trough 5-4 is formed on the side of the first trough 5-2 away from the sealing groove 4 in a protruding manner, which is equivalent to reducing the trough depth of the edge, and the unfolding length of the corrugation at the edge is reduced, namely the material elongation is reduced, so that the material is easier to punch and form, and further cracking at the edge is avoided; as shown in fig. 4 and 5, H3 represents the height of the second trough 5-4, and by setting the height of the second trough 5-4 to be less than or equal to half of the height of the first trough 5-1, the overlarge drop of the first trough 5-2 and the second trough 5-4 is avoided, so that the transitional slope between the first trough 5-2 and the second trough 5-4 is overlarge, on one hand, the forming difficulty is increased, and on the other hand, the length of the edge ladle 5 is increased, so that the area of the non-heat exchange area of the heat exchange plate is increased, and the material utilization rate is reduced.

The structural design is suitable for the duplex stainless steel 2205, 2507 materials with high strength, high corrosion resistance and low cost, solves the problem of cracking of the edge ladle 5 in the manufacturing process of the materials through the structural design, ensures the tightness of the materials, improves the manufacturing problem and the service life of the materials, promotes the application of the materials in the field of the gasket type detachable plate heat exchanger, and reduces the manufacturing cost and the maintenance cost of high-pressure and high-corrosion medium working condition products.

The heat exchange plate has simple structure, can effectively reduce the material elongation of the edge of the plate body 1, thereby avoiding the cracking of the edge of the plate sheet, reducing the manufacturing difficulty and cost, being very suitable for manufacturing the high-strength low-elongation duplex stainless steel heat exchange plate and prolonging the service life.

In some embodiments, as shown in fig. 3, a side of the first wave crest 5-1 away from the sealing groove 4 is downwardly concave to form a second wave crest 5-3, and a side of the first wave trough 5-2 away from the sealing groove 4 is upwardly convex to form a second wave trough 5-4.

As shown in fig. 3, the sealing area 3 is provided with the second wave trough 5-4 and the second wave crest 5-3 at the same time, so that the unfolding length of the wave at the edge can be further reduced, and the crack at the edge is avoided.

In some embodiments, as shown in FIG. 10, the height of the second peaks 5-3 is equal to the height of the second valleys 5-4.

As shown in fig. 10, the height of the second wave crest 5-3 is set to be equal to the height of the second wave trough 5-4, that is, the height of the second wave crest 5-3 and the height of the second wave trough 5-4 are equal to half of the height of the first wave crest 5-1, and the second wave crest 5-3 and the second wave trough 5-4 are connected together to form a plane at the edge of the plate body 1; the lower the height of the second wave crest 5-3 and the height of the second wave trough 5-4 are closer to half the height of the first wave crest 5-1, the better the anti-cracking effect is when the heights of the second wave crest 5-3 and the second wave trough 5-4 are equal, and the anti-cracking effect is the best.

In some embodiments, the first peak 5-1 has a length greater than or equal to 5mm; the length of the first wave trough 5-2 is greater than or equal to 5mm.

The first wave crest 5-1 and the first wave trough 5-2 are used for supporting the heat exchange plates, as shown in fig. 2, L1 represents the length of the first wave crest 5-1, L2 represents the length of the first wave trough 5-2, the longer the length is, the larger the effective supporting area is, the length of the first wave crest 5-1 is more than or equal to 5mm, the length of the first wave trough 5-2 is more than or equal to 5mm, and the supporting effect on the heat exchange plates can be ensured.

In some embodiments, the second peak 5-3 has a length greater than or equal to 2mm and less than or equal to half the length of the edge wrap 5; and/or the length of the second valleys 5-4 is greater than or equal to 2mm and less than or equal to half the length of the edge wrap 5.

As shown in FIG. 2, L3 represents the length of the second wave crest 5-3, L4 represents the length of the second wave trough 5-4, the length of the second wave crest 5-3 and the length of the second wave trough 5-4 are set to be more than or equal to 2mm, the effective width of the edge with lower elongation is improved, the defect of edge plate caused by feeding errors or stamping positioning errors is avoided, and the anti-cracking effect of the edge is ensured; the length of the edge ladle 5 is L1+L3 or L2+L4, the length of the second wave crest 5-3 and the length of the second wave trough 5-4 are less than or equal to half of the length of the edge ladle 5, on one hand, the length of the first wave crest 5-1 and the length of the first wave trough 5-2 are reduced under the condition that the length of the edge ladle 5 is fixed, the supporting effect is reduced, on the other hand, the overlength of the edge ladle 5 is avoided, and the effective heat exchange area of the heat exchange plate is excessively reduced.

In some embodiments, the length of the second wave crest 5-3 is equal to the length of the second wave trough 5-4.

As shown in FIG. 2, the lengths of the second wave crest 5-3 and the second wave trough 5-4 are the same, the stress is more uniform, the structural stability is improved, and the lengths of the first wave crest 5-1 and the first wave trough 5-2 are equal under the condition that the length of the edge package 5 is fixed, so that the supporting surfaces of the first wave crest 5-1 and the first wave trough 5-2 between heat exchange plates are ensured to be more consistent, the compression collapse deformation is prevented when the wave crest and the wave trough are contacted, and the supporting effect is improved.

In some embodiments, as shown in fig. 1 to 5, the edge pack 5 further includes a plurality of spaced-apart tab connection regions 5-5, the tab connection regions 5-5 including third wave troughs 5-7 and third wave crests 5-6 located on both sides of the third wave troughs 5-7, the third wave crests 5-6 having a height equal to the height of the first wave crests 5-1; and one side, far away from the sealing groove 4, of the third wave crest 5-6 is downwards recessed to form a fourth wave crest 5-8, and the height of the fourth wave crest 5-8 is greater than or equal to half of the height of the third wave crest 5-6.

As shown in fig. 1, a plurality of inserting and buckling connection areas 5-5 are arranged in the sealing area 3 at intervals, the inserting and buckling connection areas 5-5 are used for being in inserting and buckling fit with inserting and buckling 7 of the sealing gasket to play a role in limiting and fixing, and as shown in fig. 2 and 3, the inserting and buckling connection areas 5-5 comprise third wave troughs 5-7 and third wave crests 5-6 positioned on two sides of the third wave troughs 5-7 so as to be matched with the inserting and buckling 7 in a mountain shape; as shown in fig. 4, the height of the third crest 5-6 is H4, the height of the third crest 5-6 is the same as the height of the first crest 5-1, a fourth crest 5-8 is formed by downwards sinking the side, away from the sealing groove 4, of the third crest 5-6, which is equivalent to reducing the crest height of the edge, the unfolding length of the corrugation at the edge is reduced, namely, the material elongation is reduced, the material stamping forming is easier, and further cracking at the edge is avoided, and the arrangement of different crests and the inserting buckle 7 are matched, so that the limit effect can be further improved, and the stability of the sealing gasket is improved.

As shown in FIG. 5, H5 represents the height of the fourth crest 5-8, and by setting the height of the fourth crest 5-8 to be greater than or equal to half of the height of the third crest 5-6, the overlarge drop of the third crest 5-6 and the fourth crest 5-8 is avoided, so that the transitional slope between the third crest 5-6 and the fourth crest 5-8 is overlarge, on one hand, the forming difficulty is increased, and on the other hand, the length of the edge ladle 5 is also increased, so that the area of the non-heat exchange area of the heat exchange plate is increased, and the material utilization rate is reduced; the height of the fourth wave crest 5-8 can be the same as the height of the second wave crest 5-3, thereby being convenient for design and manufacture.

In some embodiments, as shown in fig. 2 and 10, a width of a side of the third trough 5-7 adjacent to the sealing groove 4 is equal to a width of the first trough 5-2, a width of a side of the third trough 5-7 away from the sealing groove 4 is greater than a width of a side of the third trough 5-7 adjacent to the sealing groove 4, and a length of the fourth crest 5-8 is greater than a length of the second crest 5-3.

As shown in fig. 2 and 10, the width of one side of the third trough 5-7 close to the sealing groove 4 is W1, the width of one side of the third trough 5-7 far from the sealing groove 4 is W2, and the width of the W1 is equal to that of the first trough 5-2, so that design and manufacture are facilitated; because the third trough 5-7 is directly communicated with the sealing groove 4, the arrangement of the third trough 5-7 can lead the leakage port of the plate body 1 to be smaller, thereby being beneficial to ensuring the high pressure performance of the heat exchanger, and the arrangement of the trough with unequal widths is matched with the eye-splice 7, thereby further improving the limit effect and the stability of the sealing gasket; in addition, because one side of the fourth crest 5-8 is connected with the second trough 5-4, the other side is connected with one side of the third trough 5-7 far away from the sealing groove 4, the height difference at the joint of the fourth crest 5-8 and the third trough 5-7 is relatively larger, the arrangement of the W2 is wider, the stretching flow of the material at the joint can be improved, more material can flow and supplement the fourth crest 5-8, the stamping difficulty is reduced, the forming quality is improved, in addition, the width of the fourth crest 5-8 is reduced by increasing the W2, but the height difference at the joint of the fourth crest 5-8 and the second trough 5-4 is relatively smaller, and therefore the influence on the material flow at the joint is smaller.

As shown in fig. 2 and 10, L5 is the length of the fourth peak 5-8, L6 is the length of one side of the third peak 5-6 far from the seal groove 4 or the length of the fourth trough 5-9, L3 is the length of the second peak 5-3, and L4 is the length of the second trough 5-4, where L5 > L3 is set to ensure that the length of L6 is equal to the length of L4 under the same slope angle, avoiding making L6 shorter and reducing the cracking resistance effect.

In some embodiments, when the sheet material is duplex stainless steel, W1 is not less than the trough width of the conventional stainless steel 304, 316L where W2 is not less than the trough width of the conventional stainless steel where W1 and W2 are both positively correlated with the tensile properties of the plate body 1, ensuring the forming quality.

In some embodiments, the side of the third trough 5-7 away from the sealing groove 4 is in height conformity with the side close to the sealing groove 4, so that the thickness of the first positioning portion 9-1 of the eye-splice 7 matched with the third trough is in conformity with the thickness of the first positioning portion 9-1, thus improving the connection strength of the first positioning portion 9-1 and avoiding breakage.

In some embodiments, as shown in fig. 2 to 5, a fourth trough 5-9 is formed by protruding upward from a side of the third trough 5-7 away from the sealing groove 4, the height of the fourth trough 5-9 is less than or equal to half of the height of the third crest 5-6, and the height difference between the fourth trough 5-9 and the third crest 5-6 is greater than or equal to 2.5mm.

As shown in fig. 2 and 3, a fourth trough 5-9 is formed on one side of the third trough 5-7 far away from the sealing groove 4 in a protruding way, which is equivalent to reducing the trough depth of the edge, the unfolding length of the corrugation at the edge is reduced, namely, the material elongation is reduced, the material is easier to punch and form, further cracking at the edge is avoided, and the trough with different heights is matched with the eye-splice 7, so that the limit effect is further improved, and the stability of the sealing gasket is improved; as shown in fig. 4 and 5, H6 represents the height of the fourth trough 5-9, and by setting the height of the fourth trough 5-9 to be less than or equal to half of the height of the third trough 5-6, the overlarge drop of the fourth trough 5-9 and the third trough 5-7 is avoided, so that the transitional slope between the fourth trough 5-9 and the third trough 5-7 is overlarge, on one hand, the forming difficulty is increased, and on the other hand, the length of the edge ladle 5 is also increased, so that the area of the non-heat exchange area of the heat exchange plate is increased, and the material utilization rate is reduced.

The height difference between the fourth wave trough 5-9 and the third wave crest 5-6 is more than or equal to 2.5mm, so that the thickness of the eye-splice 7 matched with the fourth wave trough is more than or equal to 2.5mm, the strength of the eye-splice 7 is ensured, and the eye-splice 7 is not broken during manufacturing and use; the fourth wave trough 5-9 is lower than the second wave trough 5-4 in height, further ensuring the thickness of the sealing gasket.

In some embodiments of the present application, as shown in fig. 6 to 9 and 11, a gasket is provided for matching with a sealing area 3 of a heat exchange plate according to any embodiment, wherein the sealing area 3 includes a sealing groove 4 and a plug-in connection area 5-5, the gasket includes a sealing strip 6 and a plurality of plug-ins 7, the sealing strip 6 is used for matching with the sealing groove 4, and the plug-ins 7 are connected at intervals at the periphery of the sealing strip 6 and used for matching with the plug-in connection area 5-5; the eye-splice 7 is a mountain-shaped eye-splice 7, and including connecting the first location strip 8 of sealing strip 6, and be located first location strip 8 both sides and the second location strip 9 that the interval set up, second location strip 9 is including being close to first location portion 9-1 of sealing strip 6 and keeping away from second location portion 9-2 of sealing strip 6, the thickness of first location portion 9-1 is greater than the thickness of second location portion 9-2.

The sealing gasket comprises a sealing strip 6 and a plug-in buckle 7, wherein the sealing strip 6 is of a connected structure matched with the sealing groove 4, the plug-in buckle 7 is of a mountain-shaped plug-in buckle 7, and the plug-in buckle 7 is matched with the plug-in buckle connecting area 5-5 of the plate body 1.

As shown in fig. 6, the eye-splice 7 includes a first positioning strip 8 connected with the sealing strip 6, the first positioning strip 8 is used for matching with the third trough 5-7, two sides of the first positioning strip 8 are respectively provided with a second positioning strip 9, the second positioning strip 9 is used for matching with the third crest 5-6, and the two second positioning strips 9 and the first positioning strip 8 are both connected with the cross beam 10 to form the eye-splice 7 in a mountain shape.

The second positioning strip 9 comprises a first positioning part 9-1 close to the sealing strip 6 and a second positioning part 9-2 far away from the sealing strip 6, wherein the thickness of the first positioning part 9-1 is larger than that of the second positioning part 9-2, as shown in fig. 7-9, the first positioning part 9-1 is used for being matched with the third crest 5-6, the second positioning part 9-2 is used for being matched with the fourth crest 5-8, the limiting effect is strong, and the connection stability of the insert buckle 7 and the plate body 1 is improved.

In some embodiments, as shown in fig. 6 to 9 and 11, the first positioning strip 8 includes a third positioning portion 8-1 near the sealing strip 6 and a fourth positioning portion 8-2 far from the sealing strip 6, and the width of the fourth positioning portion 8-2 is greater than the width of the third positioning portion 8-1.

The first positioning strip 8 comprises a third positioning part 8-1 close to the sealing strip 6 and a fourth positioning part 8-2 far away from the sealing strip 6, the width of the fourth positioning part 8-2 is larger than that of the third positioning part 8-1, as shown in fig. 7 to 9, the third positioning part 8-1 is used for being matched with the third trough 5-7, the fourth positioning part 8-2 is used for being matched with the fourth trough 5-9, the limiting effect is strong, and the connection stability of the insert buckle 7 and the plate body 1 is improved.

In some embodiments, as shown in fig. 11, the thicknesses of the fourth positioning portion 8-2 and the third positioning portion 8-1 are the same, that is, the thicknesses of the first positioning strips 8 are the same, so that the manufacturing is convenient, the connection strength between the insert buckle 7 and the sealing strip 6 is high, and the sealing gasket shown in fig. 11 can be matched with the heat exchange plate shown in fig. 10.

In some embodiments, as shown in fig. 7, the thickness of the third positioning portion 8-1 is greater than that of the fourth positioning portion 8-2, so as to further improve the limit function, improve the connection stability between the insert buckle 7 and the plate body 1, and the sealing gasket shown in fig. 7 can be matched with the heat exchange plate shown in fig. 3.

In some embodiments of the application a heat exchanger is provided comprising alternately stacked first heat exchanger plates, which are heat exchanger plates as described in any of the embodiments above, and second heat exchanger plates, which are obtained by vertically rotating the first heat exchanger plates 180 degrees around the center of the first heat exchanger plates; the gasket according to any of the embodiments above is arranged between the adjacent first heat exchange plate and the second heat exchange plate.

By stacking the first heat exchange plate and the second heat exchange plate, a net-shaped combined runner can be formed, and the heat exchange effect is improved; and a sealing gasket is arranged between the first heat exchange plate and the second heat exchange plate, so that the sealing effect is ensured.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity.

In addition, where details are set forth to describe example embodiments of the application, it will be apparent to one skilled in the art that embodiments of the application may be practiced without, or with variation of, these details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

While the application has been described in conjunction with the embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled 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, equivalent substitutions, improvements, and the like, which are within the spirit and principles of the embodiments of the application, are intended to be included within the scope of the application.

Claims (10)

1. A heat exchange plate, comprising: the plate body comprises a heat exchange area, an angular hole and a sealing area arranged around the heat exchange area or the angular hole, wherein the sealing area comprises a sealing groove arranged close to the heat exchange area or the angular hole and an edge pack arranged far away from the heat exchange area or the angular hole, and the edge pack comprises first wave crests and first wave troughs which are alternately arranged;

a second wave crest is formed by downwards sinking the side, away from the sealing groove, of the first wave crest, and the height of the second wave crest is greater than or equal to half of the height of the first wave crest; and/or, a second trough is formed by upwards protruding one side of the first trough away from the sealing groove, and the height of the second trough is less than or equal to half of the height of the first crest.

2. A heat exchange plate according to claim 1, wherein the length of the first peak is greater than or equal to 5mm; the length of the first trough is greater than or equal to 5mm.

3. A heat exchange plate according to claim 2, wherein the length of the second peak is greater than or equal to 2mm and less than or equal to half the length of the edge wrap; and/or the length of the second trough is greater than or equal to 2mm and less than or equal to half the length of the edge wrap.

4. A heat exchanger plate according to claim 3, wherein the length of the second wave crest is equal to the length of the second wave trough.

5. A heat exchange plate according to claim 1, wherein the edge pack further comprises a plurality of spaced-apart eye-splice connection areas, the eye-splice connection areas comprising third valleys and third peaks on either side of the third valleys, the third peaks having a height equal to the height of the first peaks;

and a fourth wave crest is formed by downwards sinking one side of the third wave crest far away from the sealing groove, and the height of the fourth wave crest is greater than or equal to half of the height of the third wave crest.

6. The heat exchange plate of claim 5 wherein a width of a side of the third trough adjacent to the seal groove is equal to a width of the first trough, a width of a side of the third trough away from the seal groove is greater than a width of a side of the third trough adjacent to the seal groove, and a length of the fourth crest is greater than a length of the second crest.

7. The heat exchange plate of claim 5, wherein a fourth trough is formed by upward protrusion of a side of the third trough away from the sealing groove, the fourth trough has a height less than or equal to half of a height of the third crest, and a height difference between the fourth trough and the third crest is greater than or equal to 2.5mm.

8. A gasket for cooperation with a sealing area of a heat exchanger plate according to any one of claims 1-7, said sealing area comprising a sealing groove and a stabbing connection area, characterized in that said gasket comprises a sealing strip for cooperation with said sealing groove and a plurality of stabs, said stabs being connected at intervals to the periphery of said sealing strip for cooperation with said stabbing connection area;

the eye-splice is mountain style of calligraphy eye-splice, including connecting the first location strip of sealing strip, and be located the second location strip that first location strip both sides and interval set up, the second location strip is including being close to the first location portion of sealing strip and keeping away from the second location portion of sealing strip, the thickness of first location portion is greater than the thickness of second location portion.

9. The gasket of claim 8, wherein the first locating bar includes a third locating portion proximate to the sealing bar and a fourth locating portion distal to the sealing bar, the fourth locating portion having a width greater than a width of the third locating portion.

10. A heat exchanger comprising first heat exchange plates and second heat exchange plates stacked alternately, the first heat exchange plates being heat exchange plates according to any one of claims 1 to 7, the second heat exchange plates being obtained by vertically rotating the first heat exchange plates 180 degrees around the center of the first heat exchange plates; a gasket according to any one of claims 8-9 is arranged between adjacent first heat exchanger plates and second heat exchanger plates.