CN210346450U

CN210346450U - Heat exchange tube sealing tool

Info

Publication number: CN210346450U
Application number: CN201920982721.5U
Authority: CN
Inventors: 郭锦翔; 沈萍; 满永兵; 朱鹤兵; 刘星彪
Original assignee: Yangzhong Shenyang Heat Exchange Equipment Co ltd
Current assignee: Yangzhong Shenyang Heat Exchange Equipment Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-17
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a heat exchange tube seals frock, include: the pipe diameters of the first pipeline and the second pipeline are the same; the outer diameter of the inner cylinder body is smaller than the inner diameter of the first pipeline, the inner cylinder body is welded with the first pipeline, and the inner cylinder body is in transition fit connection with the second pipeline; the two ends of the outer wall of the inner cylinder body are respectively provided with a sealing ring, the sealing rings are in interference fit with the first pipeline, and the sealing rings are in interference fit with the second pipeline; the inner diameter of the outer cylinder body is larger than the outer diameter of the first pipeline, the outer cylinder body is welded with the first pipeline, and the outer cylinder body is welded with the second pipeline; the inner cylinder and the first pipeline are welded to carry out inner sealing on the first pipeline and the second pipeline, the outer cylinder, the first pipeline and the second pipeline are welded to carry out outer sealing on the first pipeline and the second pipeline, the inner sealing and the outer sealing are combined to guarantee sealing of joints, and the joints are all welded to guarantee connection stability.

Description

Heat exchange tube sealing tool

Technical Field

The utility model relates to a heat exchange tube technical field, concretely relates to frock is sealed to heat exchange tube.

Background

The heat exchange tube is one of the elements of the heat exchanger, is arranged in the cylinder and is used for exchanging heat between two media. Has high thermal conductivity and good isothermal property. The shape of the heat exchange tube mainly depends on the shape of the cylinder and the connection form of the heat exchange tube and the cylinder, and the common heat exchange tube comprises a spiral tube and a linear tube.

The linear heat exchange tube is used in a heat exchanger with a longer barrel, when the linear heat exchange tube is used, the situation that the length of the heat exchange tube is insufficient can exist, and the problem can be solved by welding two heat exchange tubes together so as to meet the requirement on the length of the heat exchange tube. The welding method commonly adopted in the prior art is to directly weld the two heat exchange tubes. The heat exchange tube can be sleeved on the periphery of the welding line under certain conditions, the sleeve and the heat exchange tube are further welded, and the sealing performance of the heat exchange tube is improved. However, the heat exchange tubes of the two welding methods still have a liquid leakage phenomenon at a place with a relatively large vibration frequency. How to provide a sealed frock, it is the problem that I department's researcher cared about to solve the insecure problem of heat exchange tube welding.

Disclosure of Invention

An object of the utility model is to provide a frock is sealed to heat exchange tube to solve the heat exchange tube welding that leads to among the prior art inseparable, the phenomenon of welding seam department weeping.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a heat exchange tube seals frock, includes: the pipe diameter of the first pipeline is the same as that of the second pipeline; the outer diameter of the inner cylinder body is smaller than the inner diameter of the first pipeline, the inner cylinder body is welded with the first pipeline, and the inner cylinder body is in transition fit connection with the second pipeline; sealing rings are arranged at two ends of the outer wall of the inner cylinder body and are in interference fit with the first pipeline, and the sealing rings are in interference fit with the second pipeline; the inner diameter of the outer cylinder body is larger than the outer diameter of the first pipeline, the outer cylinder body is connected with the first pipeline in a welded mode, and the outer cylinder body is connected with the second pipeline in a welded mode.

Further, the welding mode of the inner cylinder and the first pipeline is spot welding.

Further, the welding mode of the outer cylinder body and the first pipeline is full welding, and the welding mode of the outer cylinder body and the second pipeline is full welding.

The clamping device comprises a rotating plate, a plurality of connecting seats are uniformly distributed on the rotating plate, a spring seat is fixed on each connecting seat, and a clamping block is fixed on each spring seat;

the clamping blocks are arc-shaped, and the circle centers of the plurality of clamping blocks are overlapped.

The clamping device is fixed on the connecting plate, and the circle center of the clamping block in the clamping device at one end is superposed with the circle center of the clamping block in the clamping device at the other end.

The utility model has the advantages that:

1. the inner cylinder and the first pipeline are welded to carry out inner sealing on the first pipeline and the second pipeline, the outer cylinder, the first pipeline and the second pipeline are welded to carry out outer sealing on the first pipeline and the second pipeline, the inner sealing and the outer sealing are combined to ensure the sealing of a joint, and the joint is welded to ensure the stability of connection;

2. when receiving vibrations externally, atress can transmit to interior barrel and outer barrel on first pipeline and the second pipeline, has guaranteed the safety and stability of junction. The inner cylinder body is provided with the sealing ring, and the sealing ring is in interference fit with the first pipeline and the second pipeline, so that the sealing effect is further ensured;

3. due to the welding effect of the inner barrel, the first barrel is rotated to drive the second barrel to rotate, the rapid welding of the annular welding line is realized, the circle centers of the clamping blocks at the two ends are overlapped, the first pipeline and the second pipeline which are installed are ensured to be on the same straight line, the positions do not need to be adjusted, the direct welding can be realized, and the efficiency is improved.

Drawings

FIG. 1 is a schematic view of a heat exchange tube and a sealing member according to an embodiment of the present invention;

FIG. 2 is a schematic view of the connection between the heat exchange tube and the inner cylinder according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of the inner cylinder according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of a welding jig according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a clamping device according to an embodiment of the present invention;

fig. 6 is a schematic view of the connection between the heat exchange tube and the welding fixture according to the embodiment of the present invention.

Wherein: 1. a first conduit; 2. a second conduit; 3. an inner cylinder; 31. a seal ring; 32. chamfering; 4. an outer cylinder; 5. a base plate; 6. a connecting plate; 7. a rotating shaft; 8. a clamping device; 81. a rotating plate; 82. a connecting seat; 83. a spring seat; 84. and (5) clamping blocks.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 3, a heat exchange tube sealing tool comprises a first tube 1, a second tube 2, an inner cylinder 3 and an outer cylinder 4, wherein the tube diameters of the first tube 1 and the second tube 2 are the same; the outer diameter of the inner cylinder 3 is smaller than the inner diameter of the first pipeline 1, the inner cylinder 3 is welded with the first pipeline 1, and the inner cylinder 3 is in transition fit connection with the second pipeline 2; the two ends of the outer wall of the inner cylinder body 3 are respectively provided with a sealing ring 31, the sealing ring 31 is in interference fit with the first pipeline 1, and the sealing ring 31 is in interference fit with the second pipeline 2; the internal diameter of outer barrel 4 is greater than the external diameter of first pipeline 1, and outer barrel 4 and first pipeline 1 welded connection, outer barrel 4 and second pipeline 2 welded connection.

First pipeline 1 and second pipeline 2 are the heat exchange tube, and first pipeline 1 is the same with second pipeline 2's pipe diameter, guarantee that both can weld together. During welding, select earlier interior barrel 3, the external diameter of interior barrel 3 is less than the internal diameter of first pipeline 1, second pipeline 2, guarantees that interior barrel 3 can insert in first pipeline 1 and second pipeline 2. During the welding, insert first pipeline 1 with the left end of interior barrel 3 in, the welding of the contact department of interior barrel 3 and first pipeline 1, grind the welding department and insert second pipeline 2 from the right-hand member of interior barrel 3 after flat, second pipeline 2 and the contact of first pipeline 1, weld the contact department of first pipeline 1 and second pipeline 2, grind the butt weld, then cup joint outer barrel 4 in the welding department of first pipeline 1 and second pipeline 2, with the left side and the welding of first pipeline 1 of outer barrel 4, right-hand member and second pipeline 2 weld.

Adopt interior barrel 3 and first pipeline 1 welding to carry out the internal seal to first pipeline 1 and second pipeline 2, adopt outer barrel 4 and first pipeline 1, second pipeline 2 welding to carry out the external seal to it, adopt the internal and external seal to combine together and guarantee the sealed of junction, and the junction is all through the welded form, guarantees the stability of connecting. When receiving vibrations externally, the atress can be transmitted to on interior barrel 3 and the outer barrel 4 on first pipeline 1 and the second pipeline 2, has guaranteed the safety and stability of junction. The inner cylinder body 3 is provided with the sealing ring 31, the sealing ring 31 is in interference fit with the first pipeline 1 and the second pipeline 2, and the sealing effect is further guaranteed.

In a further embodiment, the welding of the inner cylinder 3 and the first pipe 1 is spot welding. Because be equipped with sealing washer 31 on the barrel 3 in, and the cooperation form of sealing washer 31 and first pipeline 1 is interference fit, can guarantee that the heat transfer liquid in the first pipeline 1 can not run off, so adopt spot welding to save certain time, improve work efficiency. The welding mode of the outer cylinder 4 and the first pipeline 1 is full welding, and the welding mode of the outer cylinder 4 and the second pipeline 2 is full welding. Adopt full weld to guarantee outer barrel 4 and first pipeline 1, the welded leakproofness of second pipeline 2, prevent that the outer heat transfer liquid of first pipeline 1, second pipeline 2 from getting into inside the pipeline on the one hand, on the other hand if the sealed inefficacy of interior barrel 3 can also play sealed effect.

In a further embodiment, both ends of the inner cylinder 3 are chamfered. The provision of the chamfer facilitates insertion of the inner barrel 3 into the first and

second conduits

1, 2. The first pipeline 1, the second pipeline 2, the inner cylinder 3 and the outer cylinder 4 are made of the same material, the welding seam is reliable when the same material is used for welding, and further, the material is T2 copper. The T2 copper has better heat conduction and corrosion resistance. The material of the seal ring 31 is rubber. The elastic sealing device has good elasticity, and can ensure the sealing effect at the joint of the inner cylinder 3, the first pipeline 1 and the second pipeline 2.

As shown in fig. 4-6, when the first pipeline 1 and the second pipeline 2 are welded, the pipelines need to be clamped tightly to weld, so the utility model discloses still include the welding jig that clamps tight first pipeline 1 and second pipeline 2. The welding fixture comprises a clamping device 8, the clamping device 8 comprises a rotating plate 81, four connecting seats 82 are uniformly distributed on the rotating plate 81, a spring seat 83 is fixed on each connecting seat 82, and a clamping block 84 is fixed on each spring seat 83; the clamping blocks 84 are arc-shaped, and the centers of the four clamping blocks 84 coincide. When the pipeline clamping device is used, the first pipeline 1 or the second pipeline 2 is placed in the middle of the arc-shaped clamping blocks 84, and the four clamping blocks 84 clamp the first pipeline 1 and the second pipeline 2. The spring seat 83 is a common spring expansion seat, and when external pressure is applied, the spring seat 83 contracts, and when external force is removed, the spring seat 83 is restored. The clamping blocks 84 are arc-shaped, so as to clamp the circular first pipeline 1 and the circular second pipeline 2. And the arc-shaped clamping blocks 84 increase the contact between the clamping blocks 84 and the pipeline, and reduce stress concentration. The first pipeline 1 and the second pipeline 2 are ensured not to deform under stress.

In a further embodiment, the device further comprises a bottom plate 5 and two connecting plates 6, wherein the two connecting plates 6 are symmetrically connected to two ends of the bottom plate 5. Specifically, the connection between the connecting plate 6 and the bottom plate 5 is in a sliding connection mode, a sliding groove is formed in the bottom plate 5, the connecting plate 6 can slide in the sliding groove, and the connecting plate 6 and the bottom plate 5 are vertical. The number of the clamping devices 8 is two, and the two clamping devices 8 are respectively fixed on the connecting plates 6 at the two ends, and the circle center of the clamping block 84 in one end of the clamping device 8 is coincident with the circle center of the clamping block 84 in the other end of the clamping device 8.

Specifically, a rotating shaft 7 is rotatably fixed on the connecting plate 6, and the rotating plate 81 is fixed on the rotating shaft 7. When the device is used, the first pipeline 1 is fixed in the clamping device 8 at the left end, the inner cylinder 1 is welded in the first pipeline 1, then the second pipeline is fixed in the clamping device at the right end, and the connecting plate 6 at the right end slides leftwards to enable the second pipeline 2 to be in contact with the first pipeline 1. After the second pipeline 2 is connected with the first pipeline 1, the clamping device at the right end is loosened, the outer cylinder body 2 is sleeved, and then the clamping device 8 at the right end is clamped. During welding, can directly rotate first barrel 1 or second barrel 2 and realize the welding to the ring pipeline, improve welding efficiency. Specifically, rotate first barrel 1 or connecting plate 6, because the welding action of interior barrel, can drive second barrel 2 and rotate, realize the rapid weld. The centers of circles of the clamping blocks 84 at the two ends are overlapped, so that the first pipeline 1 and the second pipeline 2 which are installed are ensured to be on the same straight line and can be directly welded, and the efficiency is improved.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a frock is sealed to heat exchange tube which characterized in that includes: the pipe diameter of the first pipeline is the same as that of the second pipeline;

the outer diameter of the inner cylinder body is smaller than the inner diameter of the first pipeline, the inner cylinder body is welded with the first pipeline, and the inner cylinder body is in transition fit connection with the second pipeline; sealing rings are arranged at two ends of the outer wall of the inner cylinder body and are in interference fit with the first pipeline, and the sealing rings are in interference fit with the second pipeline;

the inner diameter of the outer cylinder body is larger than the outer diameter of the first pipeline, the outer cylinder body is connected with the first pipeline in a welded mode, and the outer cylinder body is connected with the second pipeline in a welded mode.

2. The heat exchange tube sealing tool according to claim 1, wherein the inner cylinder and the first tube are welded by spot welding.

3. The heat exchange tube sealing tool according to claim 1, wherein the outer cylinder and the first tube are welded in a full weld mode, and the outer cylinder and the second tube are welded in a full weld mode.

4. The heat exchange tube sealing tool according to claim 1, wherein chamfers are arranged at both ends of the inner cylinder.

5. The heat exchange tube sealing tool according to claim 1, wherein the first tube, the second tube, the inner cylinder and the outer cylinder are all made of T2 copper.

6. The heat exchange tube sealing tool according to claim 1, wherein the sealing ring is made of rubber.

7. The heat exchange tube sealing tool according to claim 1, further comprising a clamping device, wherein the clamping device comprises a rotating plate, a plurality of connecting seats are uniformly distributed on the rotating plate, a spring seat is fixed on each connecting seat, and a clamping block is fixed on each spring seat; the clamping blocks are arc-shaped, and the circle centers of the plurality of clamping blocks are overlapped.

8. The heat exchange tube sealing tool according to claim 7, wherein the number of the clamping blocks is four.

9. The heat exchange tube sealing tool according to claim 7, further comprising a bottom plate and connecting plates, wherein the connecting plates are symmetrically connected to two ends of the bottom plate, the clamping device is fixed on the connecting plates, and the circle center of the clamping block in the clamping device at one end is overlapped with the circle center of the clamping block in the clamping device at the other end.