CN220912098U - Heat exchange tube connection structure and heat exchanger - Google Patents
Heat exchange tube connection structure and heat exchanger Download PDFInfo
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- CN220912098U CN220912098U CN202322549511.6U CN202322549511U CN220912098U CN 220912098 U CN220912098 U CN 220912098U CN 202322549511 U CN202322549511 U CN 202322549511U CN 220912098 U CN220912098 U CN 220912098U
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- heat exchange
- exchange tube
- tube
- connector
- connecting hole
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- 238000007789 sealing Methods 0.000 claims abstract description 45
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the field of heat exchange equipment, in particular to a heat exchange tube connecting structure and a heat exchanger, wherein the heat exchange tube connecting structure comprises a connecting hole, a connector, a locking piece and a sealing piece, and the connecting hole is arranged on a tube plate; the connector is located the both ends of U type heat exchange tube, the connector is located the connecting hole, the connector includes dog and screw thread section, dog and retaining member are equipped with the both ends of connecting hole respectively, the sealing member is located between dog and retaining member and the tube sheet, through retaining member and screw thread section connection locking, make dog and retaining member locate the both ends of connecting hole, because the diameter of dog and retaining member is greater than the diameter of U type heat exchange tube, so the axial motion of U type heat exchange tube along the connecting hole has been restrained, when locking, put into the sealing member, insert the connector in the connecting hole, the other end is locked with the retaining member, during the dismantlement, with the retaining member reverse twist take out can, the dismantlement is convenient for later change, the cost is reduced, it is convenient to clean U type heat exchange tube after the dismantlement, the life of heat exchanger has been increased.
Description
Technical Field
The utility model relates to the field of heat exchange equipment, in particular to a heat exchange tube connecting structure and a heat exchanger.
Background
The heat exchanger consists of main parts including pipe box, casing, pipe bundle, etc. and has U-shaped heat exchange pipe. The U-shaped tube heat exchanger is only provided with one tube plate, two ends of the tube are fixed on the same tube plate, the tube pass of the U-shaped tube heat exchanger is double tube pass, the flow is longer, the flow velocity is higher, and the heat transfer performance is better.
At present, two ends of a heat exchange tube of the U-shaped tube type heat exchanger are fixed on a tube plate in a welding mode, so that the U-shaped heat exchange tube is inconvenient to detach, and is inconvenient to maintain and replace, thereby reducing the service life of the heat exchanger.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of utility model
The utility model provides a heat exchange tube connecting structure and a heat exchanger, thereby effectively solving the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a heat exchange tube connection structure comprising:
The connecting hole is arranged on the tube plate;
The connecting heads are arranged at two ends of the U-shaped heat exchange tube, the connecting heads are arranged in the connecting holes, the connecting heads comprise stop blocks and thread sections, and the stop blocks are arranged between the U-shaped heat exchange tube and the thread sections;
The locking piece is arranged on the threaded section, the stop block and the locking piece are respectively provided with two ends of a connecting hole, and the diameters of the stop block and the locking piece are larger than the diameter of the U-shaped heat exchange tube;
and the sealing piece is arranged between the stop block and the locking piece and the tube plate.
Further, the side surface of the stop block is at least provided with a limiting surface, and the limiting surface is parallel to the axis of the connector.
Further, 55 degrees of seal pipe threads are arranged between the thread segments and the locking piece.
Further, one end of the locking piece, which is far away from the connector, is provided with an inner hexagonal hole, and the inner hexagonal hole is concentric with the axis of the locking piece.
Further, a cross groove is formed in one side, far away from the connector, of the locking piece, and the cross groove is perpendicular to the axis of the connecting hole.
Further, the outer circular surface of the locking piece is a conical surface.
Further, a first sealing ring is arranged at the bottom of the stop block, and a second sealing ring is arranged at the bottom of the locking piece.
Further, a gasket is arranged between the second sealing ring and the locking piece.
Further, the outer circular surface of the locking piece is a conical surface, a base is arranged on one side, away from the connector, of the conical surface, the width of the base is larger than that of the conical surface, the second sealing ring and the gasket are arranged at the bottom of the base, and a gap is formed between the end part of the conical surface and the tube plate.
The utility model further comprises a tube plate, a shell, U-shaped heat exchange tubes and a plurality of heat exchange tube connecting structures, wherein the U-shaped heat exchange tubes are connected with the tube plate by adopting the heat exchange tube connecting structures, and the tube plate and the U-shaped heat exchange tubes are arranged in the shell.
The beneficial effects of the utility model are as follows: according to the U-shaped heat exchange tube, the connecting hole, the connector, the locking piece and the sealing piece are arranged, the threaded section is arranged at the end part of the connector, the protruding stop block is arranged between the threaded section and the U-shaped heat exchange tube, the connector penetrates through the connecting hole and is connected and locked with the threaded section through the locking piece, so that the stop block and the locking piece are arranged at the two ends of the connecting hole, the diameters of the stop block and the locking piece are larger than those of the U-shaped heat exchange tube, the U-shaped heat exchange tube is restrained from moving axially along the connecting hole, the sealing piece is arranged in the locking process, the connector is inserted into the connecting hole, the other end of the connector is locked by the locking piece, and the locking piece is reversely screwed out when the U-shaped heat exchange tube is disassembled, so that the U-shaped heat exchange tube is convenient to disassemble, the cost is reduced, the U-shaped heat exchange tube is convenient to clean after the disassembly, the heat conduction efficiency is improved, and the service life of the heat exchanger is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a connection structure of a heat exchange tube in embodiment 1;
FIG. 2 is a schematic view of a U-shaped heat exchange tube;
FIG. 3 is an enlarged view of a portion at A in FIG. 2;
FIG. 4 is a schematic view of the structure of the locking member in embodiment 1;
FIG. 5 is a schematic view showing a connection structure of heat exchange tubes in example 2;
FIG. 6 is a schematic view of the structure of the locking member in embodiment 2;
FIG. 7 is a schematic view showing a connection structure of heat exchange tubes in example 3;
FIG. 8 is a schematic view showing the structure of a locking member in embodiment 3;
Fig. 9 is a schematic view of a heat exchanger.
Reference numerals: 1. a connection hole; 2. a connector; 21. a stop block; 221. a limiting surface; 22. a threaded section; 221. an external thread; 3. a locking member; 31. an inner hexagonal hole; 32. a cross groove; 33. a conical surface; 34. a base; 35. an internal thread; 41. A first seal ring; 42. a second seal ring; 43. a gasket; 10. a tube sheet; 20. u-shaped heat exchange tubes; 30. a heat exchange tube connection structure; 40. a housing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
as shown in fig. 1 to 4: a heat exchange tube connection structure comprising:
The connecting hole 1 is arranged on the tube plate 10;
The connector 2 is arranged at two ends of the U-shaped heat exchange tube 20, the connector 2 is arranged in the connecting hole 1, the connector 2 comprises a stop block 21 and a thread section 22, and the stop block 21 is arranged between the U-shaped heat exchange tube 20 and the thread section 22;
The locking piece 3, the locking piece 3 is arranged on the thread section 22, the stop block 21 and the locking piece 3 are respectively provided with two ends of the connecting hole 1, and the diameters of the stop block 21 and the locking piece 3 are larger than the diameter of the U-shaped heat exchange tube 20;
A seal member provided between the stopper 21 and the locking member 3 and the tube sheet 10.
Through setting up connecting hole 1, connector 2, retaining member 3 and sealing member, connector 2 tip is equipped with screw thread section 22, be equipped with outstanding dog 21 on between screw thread section 22 and the U type heat transfer tube 20, connector 2 passes connecting hole 1, be connected through retaining member 3 and screw thread section 22 and lock, make dog 21 and retaining member 3 locate the both ends of connecting hole 1, because the diameter of dog 21 and retaining member 3 is greater than the diameter of U type heat transfer tube 20, so the axial motion of U type heat transfer tube 20 along connecting hole 1 has been restrained, put into the sealing member during locking, insert connector 2 in connecting hole 1, the other end is locked with retaining member 3, during the dismantlement, with retaining member 3 reverse twist take out can, the dismantlement is convenient for change in the future, the cost is reduced, it is convenient to clean U type heat transfer tube after the dismantlement, heat transfer efficiency is increased, the life of heat exchanger has been increased.
The seal may be a seal ring, or may be another structure in which sealing is achieved by extrusion deformation, such as a seal gasket.
Preferably, the side surface of the stop block 21 is provided with at least one limiting surface 221, and the limiting surface 221 is parallel to the axis of the connector 2.
Because the U-shaped heat exchange tubes 20 are sequentially arranged and installed on the tube plate 10 in a layer-by-layer increasing mode, the limiting surfaces 221 are arranged, on one hand, the two connectors 2 of the U-shaped heat exchange tubes 20 can be limited to twist in space, the directions are not easy to find when the connectors are inserted into the connecting holes 1, on the other hand, the limiting surfaces 221 can effectively prevent the connectors 2 from rotating along the axes of the connectors, the follow-up tightening of the locking pieces 3 is beneficial, and the sealing pieces are good in sealing due to the fact that the sealing pieces are deformed by pressing the sealing pieces after the tightening of the locking pieces 3, the limiting surfaces 221 can prevent the slipping phenomenon when the locking pieces 3 are screwed, the screwing of the locking pieces 3 is facilitated, the installation efficiency is improved, the tightening between the locking pieces 3 and the stop blocks 21 is further improved, and the sealing effect is better.
In this embodiment, the stop 21 and the connector 2 are integrally formed, so that moving parts are reduced, connection between the parts is reduced, and leakage risk is reduced.
The end of the thread segment 22 is provided with a bevel which serves as a guide for facilitating the screwing of the locking member 3 onto the thread segment 22.
In this embodiment, 55 degrees of seal tube thread is provided between thread segments 22 and locking member 3.
Specifically, the thread section 22 is provided with an external thread 221, the locking member 3 is provided with an internal thread 35 hole, and the internal thread 35 is matched with the external thread 221.
The pipe thread is on the pipe wall, and mainly uses threads for connection, and the threads can be divided into a non-sealing pipe with 55 degrees and a sealing pipe thread. The pipe thread is used for connecting pipelines, the internal thread 35 and the external thread 221 can be tightly combined together, the common pipe thread is of three types of NPT, G and PT, the 55-degree sealing pipe thread is arranged between the thread section 22 and the locking piece 3 in the embodiment, the sealing effect is achieved without adhesive tape, the sealing effect is good, and the use is convenient.
Wherein, the retaining member 3 is equipped with interior hexagonal hole 31 far away from the one end of connector 2, interior hexagonal hole 31 and retaining member 3's axis are concentric. The locking member 3 is conveniently locked to the threaded section 22 by means of a power tool or a manual driver inserted into the internal hexagonal hole 31.
Preferably, the outer circumferential surface of the locking member 3 is a tapered surface 33. When the locking piece 3 is just screwed into the thread section 22, because the outer circular surface of the locking piece 3 is the conical surface 33, the small tail part of the head of the locking piece 3 is large, the conical surface 33 is not contacted with the connecting hole 1, the inclined surface is attached to the side wall of the connecting hole 1 after the locking piece 3 is screwed to the bottom, friction between the side wall of the locking piece 3 and the connecting hole 1 is prevented when the locking piece 3 is screwed, the conical surface 33 reduces friction resistance between the locking piece 3 and the connecting hole 1 until the side surface of the locking piece 3 is contacted with the side wall of the connecting hole 1 finally, and the installation is more convenient.
The locking member 3 is not higher than the surface of the tube sheet 10. Facilitating the liquid in the tube box to enter the U-shaped heat exchange tube 20.
In this embodiment, the bottom of the stopper 21 is provided with a first sealing ring 41, and the bottom of the locking member 3 is provided with a second sealing ring 42.
The first sealing ring 41 prevents liquid from entering from the side wall of the baffle, the second sealing ring 42 prevents liquid from entering from the side wall of the locking piece 3, and double-layer sealing is carried out by arranging the two first sealing rings 41 and the second sealing ring 42, so that better sealing effect is achieved, and sealing is guaranteed more.
Wherein a gasket 43 is arranged between the second sealing ring 42 and the locking member 3.
Because the sealing washer is soft rubber product, when retaining member 3 is screwed in, the tip of retaining member 3 probably can drive second sealing washer 42 and rotate, has the risk of turning out the sealing washer groove with second sealing washer 42, drives the process of second sealing washer 42, and second sealing washer 42 dislocation and the sealing washer notch fish tail that retaining member 3 rotated also probably drive to influence sealed effect, increased the degree of difficulty of assembly, so set up gasket 43 between second sealing washer 42 and retaining member 3, easy to assemble reduces the installation degree of difficulty.
Example 2:
As shown in fig. 5 and 6, unlike in embodiment 1, the side of the locking member 3 away from the connector 2 is provided with a cross groove 32, and the cross groove 32 is perpendicular to the axis of the connecting hole 1. A manual or electric straight screwdriver or a cross screw can be inserted into the cross groove 32, so that the locking piece 3 can be conveniently detached, and the disassembly and assembly efficiency is improved.
Example 3:
As shown in fig. 7 and 8, unlike the embodiment 1, the locking member 3 has a two-stage structure, the outer circumferential surface of the locking member 3 is a tapered surface 33, a base 34 is provided on the side of the tapered surface 33 away from the connector 2, the width of the base 34 is larger than that of the tapered surface 33, a second seal ring 42 and a gasket 43 are provided at the bottom of the base 34, and a gap is provided between the end of the tapered surface 33 and the tube sheet 10.
By providing a gap between the end of the conical surface 33 and the tube plate 10, when the locking member 3 is screwed down, the base 34 is preferentially contacted with the gasket 43, so that the second sealing ring 42 is pressed more tightly, and the sealing effect is better.
As shown in fig. 9, the utility model further comprises a heat exchanger, which comprises a tube plate 10, a shell 40, a U-shaped heat exchange tube 20 and a plurality of heat exchange tube connecting structures 30 as described above, wherein the plurality of U-shaped heat exchange tubes 20 are connected with the tube plate 10 by adopting the heat exchange tube connecting structures 30, and the tube plate 10 and the U-shaped heat exchange tube 20 are arranged in the shell 40.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A heat exchange tube connection structure, comprising:
The connecting hole is arranged on the tube plate;
The connecting heads are arranged at two ends of the U-shaped heat exchange tube, the connecting heads are arranged in the connecting holes, the connecting heads comprise stop blocks and thread sections, and the stop blocks are arranged between the U-shaped heat exchange tube and the thread sections;
The locking piece is arranged on the threaded section, the stop block and the locking piece are respectively provided with two ends of a connecting hole, and the diameters of the stop block and the locking piece are larger than the diameter of the U-shaped heat exchange tube;
and the sealing piece is arranged between the stop block and the locking piece and the tube plate.
2. The heat exchange tube connecting structure according to claim 1, wherein the side surface of the stopper is provided with at least one limiting surface, and the limiting surface is parallel to the axis of the connector.
3. The heat exchange tube connection according to claim 1, wherein the thread segments and the locking member are 55 degree seal tube threads therebetween.
4. The heat exchange tube connecting structure according to claim 1, wherein an end of the locking member remote from the connector is provided with an inner hexagonal hole concentric with an axis of the locking member.
5. The heat exchange tube connecting structure according to claim 1, wherein a cross groove is formed in a side, away from the connector, of the locking member, and the cross groove is perpendicular to the axis of the connecting hole.
6. The heat exchange tube connecting structure according to claim 1, wherein the outer circumferential surface of the locking member is a conical surface.
7. The heat exchange tube connection structure according to claim 1, wherein the stopper bottom is provided with a first seal ring, and the locking member bottom is provided with a second seal ring.
8. The heat exchange tube connecting structure according to claim 7, wherein a gasket is provided between the second seal ring and the locking member.
9. The heat exchange tube connecting structure according to claim 8, wherein the outer circumferential surface of the locking member is a conical surface, a base is arranged on one side of the conical surface away from the connector, the width of the base is larger than that of the conical surface, the second sealing ring and the gasket are arranged at the bottom of the base, and a gap is arranged between the end part of the conical surface and the tube plate.
10. A heat exchanger, characterized by comprising a tube plate, a shell, a U-shaped heat exchange tube and a plurality of heat exchange tube connecting structures according to any one of claims 1 to 9, wherein a plurality of the U-shaped heat exchange tubes and the tube plate are connected by adopting the heat exchange tube connecting structures, and the tube plate and the U-shaped heat exchange tubes are arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549511.6U CN220912098U (en) | 2023-09-19 | 2023-09-19 | Heat exchange tube connection structure and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549511.6U CN220912098U (en) | 2023-09-19 | 2023-09-19 | Heat exchange tube connection structure and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220912098U true CN220912098U (en) | 2024-05-07 |
Family
ID=90911302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322549511.6U Active CN220912098U (en) | 2023-09-19 | 2023-09-19 | Heat exchange tube connection structure and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220912098U (en) |
-
2023
- 2023-09-19 CN CN202322549511.6U patent/CN220912098U/en active Active
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| GR01 | Patent grant | ||
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