CN220454387U - Plate heat exchanger joint assembly - Google Patents

Plate heat exchanger joint assembly Download PDF

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Publication number
CN220454387U
CN220454387U CN202321604911.6U CN202321604911U CN220454387U CN 220454387 U CN220454387 U CN 220454387U CN 202321604911 U CN202321604911 U CN 202321604911U CN 220454387 U CN220454387 U CN 220454387U
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Prior art keywords
copper sleeve
white copper
stainless steel
sleeve
steel pipe
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CN202321604911.6U
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Chinese (zh)
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赵梅春
赵群
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XINCHANG COUNTY FANGYUAN BEARING TECHNOLOGY INNOVATION SERVICE CENTER
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XINCHANG COUNTY FANGYUAN BEARING TECHNOLOGY INNOVATION SERVICE CENTER
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Abstract

The utility model discloses a plate heat exchanger joint assembly which comprises a stainless steel tube joint and a sleeve, wherein the sleeve is a white copper sleeve, and the white copper sleeve is fixedly connected with the stainless steel tube joint. The utility model has simple and reasonable structural design and strong practicability, realizes the communication between the plate heat exchanger and other system components through the connection between the white copper sleeve and the system piping, and the stainless steel pipe joint is not directly connected with the system piping, thereby realizing the connection reliability between the plate heat exchanger joint and the system piping and reducing the cost.

Description

Plate heat exchanger joint assembly
Technical Field
The utility model belongs to the technical field of heat exchanger equipment, and particularly relates to a plate heat exchanger joint assembly.
Background
The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is ideal equipment for liquid-liquid and liquid-vapor heat exchange. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. The connection joint of the plate heat exchanger is mostly stainless steel connection pipes, the refrigeration system mostly adopts copper pipes as the piping, the system piping is required to be welded with the stainless steel connection pipes of the plate heat exchanger, so how to realize reliable connection between the stainless steel connection pipes and the copper pipes is a problem to be solved by the person skilled in the art.
Disclosure of Invention
The utility model aims to provide a technical scheme of a plate heat exchanger joint assembly, which aims at overcoming the defects of the prior art, and has the advantages of simple and reasonable structural design, strong practicability, realization of communication between a plate heat exchanger and other system components through connection between a white copper sleeve and the system piping, realization of connection reliability between the plate heat exchanger joint and the system piping and reduction of cost, wherein the stainless steel pipe joint is not directly connected with the system piping.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the plate heat exchanger joint assembly comprises a stainless steel pipe joint and a sleeve, wherein the sleeve is a white copper sleeve which is fixedly connected with the stainless steel pipe joint; indirect connection between the stainless steel pipe joint and other pipelines is realized through a cupronickel sleeve; the technical problem that when the system piping is red copper, brazing filler metal with silver content of more than 20% can be used for brazing connection of dissimilar materials is solved, the air conditioning refrigeration (heating) system connection joint and the system piping connection tend to be homogeneous in weldability is realized through the joint, and brazing connection can be carried out on the plate heat exchanger joint and the system piping only by using brazing filler metal with silver content of 5%, and silver content in the brazing filler metal can be effectively reduced on the premise that welding quality is guaranteed by welding operation, so that brazing material cost is saved by about 60%, welding cost is greatly reduced, and practical welding operation is facilitated.
Further, the white copper sleeve adopts the white copper sleeve with the sum of Ni and Co content being more than 25% and the Fe content being less than 0.5%, the structural design is ingenious, and the sum of Ni and Co content in the white copper sleeve adopted in the application is more than 25%, so that the structural strength and hardness of the white copper sleeve are effectively improved, and meanwhile, the Fe content is less than 0.5%, so that the welding and fixing between the white copper sleeve and a system piping are facilitated, and the welding stability is improved.
Furthermore, the white copper sleeve is a common white copper sleeve, an iron white copper sleeve or a manganese white copper sleeve, has reasonable structural design, and can be selected to be suitable according to actual requirements.
Further, the common white copper sleeve is a B23 common white copper sleeve, a B25 common white copper sleeve or a B30 common white copper sleeve, the iron white copper sleeve is a BFe16-1-1-0.5 iron white copper sleeve, a BFe30-0.7 iron white copper sleeve, a BFe30-1-1 iron white copper sleeve or a BFe30-2-2 iron white copper sleeve, and the manganese white copper sleeve is a BMn40-1.5 manganese white copper sleeve or a BMn43-0.5 manganese white copper sleeve.
Further, through holes are formed in the stainless steel pipe joint in a penetrating mode, extension convex rings are arranged on the outer side wall of the stainless steel pipe joint, the extension convex rings and the stainless steel pipe joint are of an integrated structure, medium circulation is achieved through the through holes, structural strength of the stainless steel pipe joint can be enhanced through the design of the extension convex rings, meanwhile, the connection contact area between the stainless steel pipe joint and the plate heat exchanger can be increased through the extension convex rings, and connection reliability and tightness between the stainless steel pipe joint and the plate heat exchanger are improved.
Further, one end of the through hole is provided with a first counter bore, the aperture of the first counter bore is larger than the aperture of the through hole, the first counter bore is communicated with the through hole through a chamfer transition, the change of the aperture is more gentle through a chamfer transition setting, the structural strength is improved, the aperture of the first counter bore is larger than the design of the aperture of the through hole, the wall thickness of the stainless steel pipe joint at the first counter bore end is controlled, the wall thickness of the stainless steel pipe joint at the first counter bore end is thinner, and expansion joint fixation between the stainless steel pipe joint and the plate heat exchanger is facilitated.
Further, the other end of through-hole is provided with the second counter bore, the aperture of second counter bore is greater than the aperture of through-hole for form the step groove between second counter bore and the through-hole, the step inslot is located to the cupronickel sleeve pipe, adopt the design of second counter bore to make the intraductal step groove that forms of cupronickel sleeve, it is spacing to make things convenient for the preliminary joint of cupronickel sleeve pipe in stainless steel pipe joint through the step groove, the rethread welding is further fixed, effectively ensure installation fastness and reliability, structural design is ingenious reasonable, the assembly between cupronickel sleeve pipe and the stainless steel pipe joint of being more convenient for, also through a chamfer transition intercommunication between second counter bore and the through-hole simultaneously, make aperture change comparatively steady, ensure overall structural strength.
Further, the white copper sleeve is matched and arranged in the step groove, the outer side of the white copper sleeve is flush with the outer side of the stainless steel pipe joint, the white copper sleeve is matched with the step groove, the whole white copper sleeve is just embedded and arranged in the step groove, the white copper sleeve is further fixed through welding, the hidden arrangement of the white copper sleeve in the stainless steel pipe joint is realized, the appearance of the whole joint is more attractive, and the outer side of the white copper sleeve is completely supported by the limit of the stainless steel pipe joint due to the fact that the white copper sleeve is embedded in the step groove, the wall thickness of the white copper sleeve can be relatively thin, the wall thickness of the white copper sleeve is preferably 0.1-1 mm, the wall thickness of the stainless steel pipe joint is preferably designed to be 0.5-3 mm, and the whole structural firmness and the structural strength of the joint are ensured.
Further, one end of the white copper sleeve is arranged in the step groove in a matching mode, the other end of the white copper sleeve extends to protrude out of the step groove, part of the white copper sleeve protrudes out of the step groove, connection between the subsequent white copper sleeve and a system piping is facilitated, and as most of the white copper sleeve is exposed out of the step groove, in order to ensure the self structural strength of the white copper sleeve, the wall thickness of the white copper sleeve is preferably designed to be 0.5-2 mm, the wall thickness of the stainless steel pipe joint is preferably designed to be 0.5-3 mm, and the integral structural firmness and structural strength of the joint are ensured.
Further, one end of the white copper sleeve is arranged on the outer side wall of the stainless steel pipe joint in a matching mode, the corresponding end face of the white copper sleeve is abutted against the extending convex ring, the other end of the white copper sleeve extends to protrude out of the stainless steel pipe joint, the white copper sleeve is directly sleeved on the stainless steel pipe joint and supports and limits the end portion of the white copper sleeve in a matching mode, accurate sleeving installation of the white copper sleeve is achieved, the white copper sleeve and the stainless steel pipe joint are further welded and fixed through welding, and the wall thickness of the white copper sleeve is preferably designed to be 0.5-2 mm because the white copper sleeve is integrally arranged on the outer side, self structural strength of the white copper sleeve is guaranteed, and the wall thickness of the stainless steel pipe joint is preferably designed to be 0.5-3 mm, and the integral structural firmness and structural strength of the joint are guaranteed.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
the utility model has simple and reasonable structural design and strong practicability, solves the technical problem that when the joint connected with the traditional plate heat exchanger is made of stainless steel and the system piping is made of red copper, the brazing filler metal with the silver content of more than 20% can be used for brazing and connecting different materials, realizes the weldability of the connection trend of the air-conditioning refrigeration (heating) system connecting joint and the system piping, can braze and connect the plate heat exchanger joint and the system piping by only adopting the brazing filler metal with the silver content of 5%, and can effectively reduce the silver content in the brazing filler metal on the premise of ensuring the welding quality by welding operation, thereby saving the brazing material cost by about 60%, greatly reducing the welding cost and being convenient for practical welding operation.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic plan view of a first embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of the structure of A-A in FIG. 2;
FIG. 4 is a schematic view showing an internal cross-sectional structure of a stainless steel pipe joint according to a first embodiment of the present utility model;
FIG. 5 is a schematic diagram of a second embodiment of the present utility model;
FIG. 6 is a schematic plan view of a second embodiment of the present utility model;
FIG. 7 is a schematic cross-sectional view of the structure B-B of FIG. 6;
FIG. 8 is a schematic view showing the internal cross-sectional structure of a stainless steel pipe joint according to a second embodiment of the present utility model;
FIG. 9 is a schematic diagram of a third embodiment of the present utility model;
FIG. 10 is a schematic plan view of a third embodiment of the present utility model;
FIG. 11 is a schematic cross-sectional view of the structure C-C of FIG. 10;
fig. 12 is a schematic view showing an internal cross-sectional structure of a stainless steel pipe joint according to a third embodiment of the present utility model.
In the figure: 1-stainless steel pipe joint; 2-white copper sleeve; 3-through holes; 4-extending a convex ring; 5-a first counter bore; 6-a second counter bore; 7-a step groove; 8-chamfering first; 9-chamfering II.
Detailed Description
As shown in fig. 1 to 4, in a first embodiment of the present utility model, the stainless steel pipe joint comprises a stainless steel pipe joint 1 and a sleeve, wherein the sleeve is a white copper sleeve 2, the white copper sleeve 2 is fixedly connected with the stainless steel pipe joint 1, and indirect connection between the stainless steel pipe joint 1 and other pipelines is realized through the white copper sleeve 2; the white copper sleeve 2 is fixed on the stainless steel pipe joint 1 through brazing, and the white copper sleeve 2 and the stainless steel pipe joint 1 enter a furnace for brazing together with the core body of the plate heat exchanger when being welded, so that the process is simple; the technical problem that when the traditional joint connected with the plate heat exchanger is made of stainless steel and the system piping is made of red copper, brazing filler metal with silver content of more than 20% can be used for brazing the dissimilar materials is solved, the air conditioning refrigeration (heating) system connecting joint and the system piping are connected to be tend to be homogeneous in weldability through the joint, and the plate heat exchanger joint and the system piping can be brazed by only adopting brazing filler metal with silver content of 5% under the premise that welding quality is guaranteed by welding operation, silver content in the brazing filler metal can be effectively reduced, so that brazing material cost is saved by about 60%, welding cost is greatly reduced, and practical welding operation is facilitated.
The white copper sleeve 2 adopts the white copper sleeve 2 with the sum of Ni and Co content being more than 25% and the Fe content being less than 0.5%, the structural design is ingenious, and the sum of Ni and Co content in the white copper sleeve 2 adopted in the application is more than 25%, so that the structural strength and hardness of the white copper sleeve 2 are effectively improved, and meanwhile, the Fe content is less than 0.5%, the welding fixation between the white copper sleeve 2 and a system piping is facilitated, and the welding stability is improved.
The white copper sleeve 2 is a common white copper sleeve, an iron white copper sleeve or a manganese white copper sleeve, has reasonable structural design, and can be selected to be suitable according to actual requirements. The common white copper sleeve is a B23 common white copper sleeve, a B25 common white copper sleeve or a B30 common white copper sleeve, the iron white copper sleeve is a BFe16-1-1-0.5 iron white copper sleeve, a BFe30-0.7 iron white copper sleeve, a BFe30-1-1 iron white copper sleeve or a BFe30-2-2 iron white copper sleeve, and the manganese white copper sleeve is a BMn40-1.5 manganese white copper sleeve or a BMn43-0.5 manganese white copper sleeve.
The stainless steel pipe joint 1 is internally penetrated and is provided with the through hole 3, be provided with chamfer two 9 on the stainless steel pipe joint 1, be provided with on the lateral wall of stainless steel pipe joint 1 and extend bulge loop 4, extend bulge loop 4 and stainless steel pipe joint 1 as integrated into one piece structure, the circulation of medium is realized to through hole 3, the structural strength of stainless steel pipe joint 1 can be strengthened in the design of extension bulge loop 4, and extend bulge loop 4 and stainless steel pipe joint 1 as integrated into one piece structure, also can be convenient for actual machine-shaping, extend bulge loop 4 simultaneously can increase the connection area of contact between stainless steel pipe joint 1 and the plate heat exchanger, improve the connection reliability and the leakproofness between stainless steel pipe joint 1 and the plate heat exchanger.
One end of the through hole 3 is provided with a first counter bore 5, the aperture of the first counter bore 5 is larger than the aperture of the through hole 3, the first counter bore 5 is in transitional communication with the through hole 3 through a chamfer 8, the change of the aperture is more gentle through the transitional setting of the chamfer 8, the structural strength is improved, the aperture of the first counter bore 5 is larger than the aperture of the through hole 3, the wall thickness of the stainless steel pipe joint 1 at the end of the first counter bore 5 is controlled, the wall thickness of the stainless steel pipe joint 1 at the end of the first counter bore 5 is thinner, and the expansion joint between the subsequent stainless steel pipe joint 1 and the plate heat exchanger is convenient to fix.
The other end of through-hole 3 is provided with second counter bore 6, the aperture of second counter bore 6 is greater than the aperture of through-hole 3 for form step groove 7 between second counter bore 6 and the through-hole 3, the step inslot is located to the white copper sleeve pipe 2, adopt the design of second counter bore 6 to make the white copper sleeve pipe 2 in form step groove 7, make things convenient for the white copper sleeve pipe 2 in the stainless steel pipe joint 1 preliminary joint spacing through step groove 7, the rethread welding is further fixed, effectively ensure installation fastness and reliability, structural design is ingenious reasonable, the equipment between white copper sleeve pipe 2 and the stainless steel pipe joint 1 of being convenient for more, also through chamfer 8 transition intercommunication between second counter bore 6 and the through-hole 3 simultaneously, make aperture change comparatively steady, ensure overall structure intensity.
The white copper sleeve 2 is matched and arranged in the step groove 7, the outer side of the white copper sleeve 2 is flush with the outer side of the stainless steel pipe joint 1, the white copper sleeve 2 is matched with the step groove 7, the whole is just embedded and arranged in the step groove 7, and the white copper sleeve 2 is further fixed through welding, so that the hidden arrangement of the white copper sleeve 2 in the stainless steel pipe joint 1 is realized, the appearance of the whole joint is more attractive, and the outer side of the white copper sleeve 2 is completely supported by the limit support of the stainless steel pipe joint 1 due to the fact that the white copper sleeve 2 is embedded in the step groove 7, the wall thickness of the white copper sleeve 2 can be relatively thin, the wall thickness of the white copper sleeve 2 is preferably 0.1-1 mm, the wall thickness of the stainless steel pipe joint 1 is preferably designed to be 0.5-3 mm, and the whole structural firmness and structural strength of the joint are ensured.
As shown in fig. 5 to 8, in the second embodiment of the present utility model, according to the technical solution of the first embodiment, the installation state of the copper white sleeve 2 in the step groove 7 is adjusted, one end of the copper white sleeve 2 is arranged in the step groove 7 in a matching manner, the other end of the copper white sleeve 2 extends and protrudes outside the step groove 7, part of the copper white sleeve 2 protrudes and is exposed in the step groove 7, so that the connection between the copper white sleeve 2 and the system piping is facilitated, and in order to ensure the self structural strength of the copper white sleeve 2, the wall thickness of the copper white sleeve 2 is preferably designed to be 0.5-2 mm, and the wall thickness of the stainless steel pipe joint 1 is preferably designed to be 0.5-3 mm, so that the overall structural firmness and structural strength of the joint are ensured.
As shown in fig. 9 to 12, in the third embodiment of the present utility model, under the technical solution based on the first embodiment, the installation mode between the cupronickel sleeve 2 and the stainless steel pipe joint 1 is changed, so as to realize the simplified design of the internal hole section of the stainless steel pipe joint 1, and no second counter bore 6 is required to be arranged in the stainless steel pipe joint 3, thereby being more convenient for actual processing and production. One end of the white copper sleeve 2 is arranged on the outer side wall of the stainless steel pipe joint 1 in a matching mode, the corresponding end face of the white copper sleeve 2 is abutted against the extending convex ring 4, the other end of the white copper sleeve 2 extends and protrudes out of the stainless steel pipe joint 1, the white copper sleeve 2 is directly sleeved on the stainless steel pipe joint 1 and supports and limits the end portion of the white copper sleeve 2 in a matching mode, accurate sleeved installation of the white copper sleeve 2 is achieved, the white copper sleeve 2 and the stainless steel pipe joint 1 are further welded and fixed through welding, and the white copper sleeve 2 is integrally arranged on the outer side, so that the wall thickness of the white copper sleeve 2 is preferably designed to be 0.5-2 mm, the self structural strength of the white copper sleeve 2 is ensured, the wall thickness of the stainless steel pipe joint 1 is preferably designed to be 0.5-3 mm, and the integral structural firmness and the structural strength of the joint are ensured.
The utility model has simple and reasonable structural design and strong practicability, solves the technical problem that when the joint connected with the traditional plate heat exchanger is made of stainless steel and the system piping is made of red copper, the brazing filler metal with the silver content of more than 20% can be used for brazing and connecting different materials, realizes the weldability of the connection trend of the air-conditioning refrigeration (heating) system connecting joint and the system piping, can braze and connect the plate heat exchanger joint and the system piping by only adopting the brazing filler metal with the silver content of 5%, and can effectively reduce the silver content in the brazing filler metal on the premise of ensuring the welding quality by welding operation, thereby saving the brazing material cost by about 60%, greatly reducing the welding cost and being convenient for practical welding operation.
The above is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present utility model to achieve substantially the same technical effects are included in the scope of the present utility model.

Claims (9)

1. A plate heat exchanger joint assembly, comprising:
stainless steel pipe joint;
the sleeve is a white copper sleeve, and the white copper sleeve is fixedly connected with the stainless steel pipe joint;
and the indirect connection between the stainless steel pipe joint and other pipelines is realized through the cupronickel sleeve.
2. A plate heat exchanger joint assembly as claimed in claim 1, wherein: the white copper sleeve is a common white copper sleeve, an iron white copper sleeve or a manganese white copper sleeve.
3. A plate heat exchanger joint assembly as claimed in claim 2, wherein: the common white copper sleeve is a B23 common white copper sleeve, a B25 common white copper sleeve or a B30 common white copper sleeve, the iron white copper sleeve is a BFe16-1-1-0.5 iron white copper sleeve, a BFe30-0.7 iron white copper sleeve, a BFe30-1-1 iron white copper sleeve or a BFe30-2-2 iron white copper sleeve, and the manganese white copper sleeve is a BMn40-1.5 manganese white copper sleeve or a BMn43-0.5 manganese white copper sleeve.
4. A plate heat exchanger joint assembly as claimed in claim 1, wherein: the stainless steel pipe joint is internally provided with a through hole in a penetrating way, the outer side wall of the stainless steel pipe joint is provided with an extending convex ring, and the extending convex ring and the stainless steel pipe joint are of an integrated structure.
5. A plate heat exchanger joint assembly as recited in claim 4 wherein: one end of the through hole is provided with a first counter bore, and the aperture of the first counter bore is larger than that of the through hole.
6. A plate heat exchanger joint assembly as recited in claim 4 wherein: the other end of the through hole is provided with a second counter bore, the aperture of the second counter bore is larger than that of the through hole, a step groove is formed between the second counter bore and the through hole, and the cupronickel sleeve is arranged in the step groove.
7. A plate heat exchanger joint assembly as set forth in claim 6 wherein: the cupronickel sleeve is matched and arranged in the step groove, and the outer side of the cupronickel sleeve is flush with the outer side of the stainless steel pipe joint.
8. A plate heat exchanger joint assembly as set forth in claim 6 wherein: one end of the cupronickel sleeve is matched and arranged in the step groove, and the other end of the cupronickel sleeve extends and protrudes out of the step groove.
9. A plate heat exchanger joint assembly as recited in claim 4 wherein: one end of the white copper sleeve is matched and arranged on the outer side wall of the stainless steel pipe joint, the corresponding end face of the white copper sleeve is abutted to the extending convex ring for lamination, and the other end of the white copper sleeve extends and protrudes out of the outer side of the stainless steel pipe joint.
CN202321604911.6U 2023-06-21 2023-06-21 Plate heat exchanger joint assembly Active CN220454387U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321604911.6U CN220454387U (en) 2023-06-21 2023-06-21 Plate heat exchanger joint assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321604911.6U CN220454387U (en) 2023-06-21 2023-06-21 Plate heat exchanger joint assembly

Publications (1)

Publication Number Publication Date
CN220454387U true CN220454387U (en) 2024-02-06

Family

ID=89725702

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321604911.6U Active CN220454387U (en) 2023-06-21 2023-06-21 Plate heat exchanger joint assembly

Country Status (1)

Country Link
CN (1) CN220454387U (en)

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