Connecting pipe structure of heat exchanger

Abstract

The connecting pipe structure comprises a heat exchanger connecting pipe, a flange plate is welded and fixed to the outer surface of the heat exchanger connecting pipe, a replaceable sealing mechanism is arranged in the heat exchanger connecting pipe, an installation butt joint mechanism is arranged on the surface of the flange plate, and the replaceable sealing mechanism comprises a sealing assembly and a butt joint assembly. The heat exchanger connecting pipe is arranged at the end; the connecting limiting assembly is arranged at the joint of the sealing assembly and the heat exchanger connecting pipe; the operation assembly is arranged in the connection limiting assembly; through the designed connecting groove, the connecting block, the limiting groove and the elastic limiting buckle, the sealing rubber ring can be rapidly replaced, meanwhile, the designed groove and the designed arc-shaped groove are matched, the connecting block can be rapidly pulled out of the connecting groove to be disassembled, and compared with the prior art, replacement work of the sealing ring is greatly facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger pipe connection technical field, concretely relates to a heat exchanger pipe connection structure. BACKGROUND

[0002] Heat exchanger (also known as heat exchanger or heat exchange equipment) is used to make heat transfer from hot fluid to cold fluid to meet the specified process requirements, and is an industrial application of flow heat transfer and heat conduction. Heat exchanger can be classified in different ways. According to the operation process, it can be divided into three categories: barrier type, mixing type and regenerative type (or called regenerative type). According to the degree of compactness of its surface, it can be divided into two types: compact type and non-compact type. The pipe connection is the part connecting the heat exchanger with the external pipeline or other equipment, which is used for fluid transmission. It is usually welded on the shell or tube sheet of the heat exchanger and is equipped with connecting devices to connect with other pipelines or equipment. The external pipeline of the heat exchanger is generally fixed and connected by flange screwing when connected with other pipelines. In order to ensure the sealing performance after connection, a sealing ring is arranged at the end of the external pipeline of the heat exchanger. However, the existing sealing ring is only sleeved and attached to the end of the pipeline, without any limiting structure, so that the sealing effect after assembly and fixation is poor, and the replacement of the sealing ring is not convenient. Therefore, we propose a heat exchanger pipe connection structure. SUMMARY

[0003] The utility model aims at providing a heat exchanger pipe connection structure to solve the problem of inconvenient replacement of the sealing ring at the end of the heat exchanger pipe and poor sealing effect in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a heat exchanger pipe connection structure, comprising a heat exchanger pipe, a flange plate is welded and fixed on the outer surface of the heat exchanger pipe, a replaceable sealing mechanism is arranged in the heat exchanger pipe, an installation docking mechanism is arranged on the surface of the flange plate, the replaceable sealing mechanism comprises: a sealing assembly arranged at the end of the heat exchanger pipe; a connection limiting assembly arranged at the connection between the sealing assembly and the heat exchanger pipe; and an operation assembly arranged in the connection limiting assembly.

[0005] Preferably, the sealing assembly comprises an embedded groove opened in the inner wall end of the heat exchanger pipe and a sealing rubber ring arranged in the embedded groove.

[0006] Preferably, the connection limiting assembly comprises connection grooves symmetrically opened in the inner wall of the embedded groove and connection blocks symmetrically fixed on both sides of the sealing rubber ring, and the connection blocks are engaged with the connection grooves.

[0007] Preferably, two sides of the connecting block are symmetrically provided with limiting grooves, and elastic limiting buckles are symmetrically fixed on the inner walls of the connecting grooves and are clamped and connected with the limiting grooves.

[0008] Preferably, the operating assembly comprises a groove provided at the end of the connecting block and a pushing block fixed in the connecting groove, and the inner wall of the connecting groove is provided with an arc-shaped groove.

[0009] Preferably, the mounting butt joint mechanism comprises butt joint grooves symmetrically provided at the ends of the flange plates and butt joint blocks symmetrically fixed on the inner walls of the butt joint grooves.

[0010] Preferably, the butt joint grooves are rectangular in cross section.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The connecting groove, the connecting block, the limiting groove and the elastic limiting buckle can realize quick replacement of the sealing rubber ring, and the groove and the arc-shaped groove can also quickly push out the connecting block from the inside of the connecting groove for disassembly, thereby greatly facilitating the replacement work of the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic view of the appearance structure of the utility model;

[0014] Figure 2 It is an enlarged schematic view of A in the utility model; Figure 1

[0015] Figure 3 It is an enlarged schematic view of B in the utility model; Figure 1

[0016] In the drawing: 1, heat exchanger connecting pipe; 2, flange plate; 100, built-in groove; 101, sealing rubber ring; 200, connecting groove; 201, connecting block; 300, limiting groove; 301, elastic limiting buckle; 400, groove; 401, pushing block; 402, arc-shaped groove; 500, butt joint groove; 501, butt joint block. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figures 1 to 3 ​​The utility model provides a kind of technical scheme: a pipe connection structure of heat exchanger, including heat exchanger pipe 1, the outer surface welding of heat exchanger pipe 1 is fixed with flange plate 2, the inside of heat exchanger pipe 1 is provided with replaceable sealing mechanism, flange plate 2 The surface is provided with installation docking mechanism, replaceable sealing mechanism includes: sealing assembly, it is arranged in the end of heat exchanger pipe 1;Connecting limiting assembly, it is arranged at the connecting place between sealing assembly and heat exchanger pipe 1;Operating assembly, it is arranged in the inside of connecting limiting assembly.

[0019] In the embodiment, preferably, the sealing assembly includes an inner groove 100 opened in the inner wall end of the heat exchanger pipe 1 and a sealing rubber ring 101 arranged in the inner groove 100, which can play a sealing role when the heat exchanger pipe 1 is connected with the pipeline.

[0020] In the embodiment, preferably, the connecting limiting assembly includes a connecting groove 200 symmetrically opened in the inner wall of the inner groove 100 and a connecting block 201 symmetrically fixed on both sides of the sealing rubber ring 101, which is connected with the connecting groove 200 through the connecting block 201, so as to facilitate the connection between the sealing rubber ring 101 and the inner groove 100.

[0021] In the embodiment, preferably, the connecting block 201 is symmetrically provided with a limiting groove 300 on both sides and an elastic limiting buckle 301 symmetrically fixed on the inner wall of the connecting groove 200, which is connected with the limiting groove 300 through the elastic limiting buckle 301, so as to limit the connecting block 201 in the connecting groove 200.

[0022] In the embodiment, preferably, the operating assembly includes a groove 400 opened in the end of the connecting block 201 and a push block 401 fixed in the connecting groove 200, and the inner wall of the connecting groove 200 is provided with an arc-shaped groove 402, which facilitates the movement of the connecting block 201 out of the connecting groove 200.

[0023] In the embodiment, preferably, the installation docking mechanism includes a docking groove 500 symmetrically opened in the end of the flange plate 2 and a docking block 501 symmetrically fixed on the inner wall of the docking groove 500, which can play a guiding role when the pipeline is docked with the flange plate 2 on the heat exchanger pipe 1.

[0024] In the embodiment, preferably, the cross section of the docking groove 500 is rectangular.

[0025] The utility model discloses a working principle and use flow: the utility model discloses when needing to replace the sealing rubber ring 101 in the heat exchanger connector 1 inside, first through arc -shaped groove 402 inside the stirring block 401 of recess 400 is stirred, make it drive connecting block 201 from the inside of connecting groove 200 to the outside removal, drive elastic limit buckle 301 and limit groove 300 extrusion separation simultaneously to cancel the location, can let connecting block 201 from the inside of connecting groove 200 exit, and drive sealing rubber ring 101 from the inside of built -in groove 100 exit, can dismantle the existing sealing rubber ring 101 from the inside of built -in groove 100 then, replace new sealing rubber ring 101, when needing to connect the pipeline with heat exchanger connector 1, can be through the end of pipeline and the end of heat exchanger connector 1 adhesion, make the connecting piece on pipeline and flange plate 2 connect, and through the docking groove 500 and docking block 501 play the docking guide effect, to accurately align the screw hole without mistake.

[0026] Although the embodiments of the utility model have been shown and described (see the detailed description above), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tube structure of a heat exchanger, comprising a heat exchanger tube (1), an outer surface of the heat exchanger tube (1) being welded with a flange plate (2), characterized in that: The inside of the heat exchanger connecting pipe (1) is provided with a replaceable sealing mechanism, the surface of the flange plate (2) is provided with a mounting butt joint mechanism, the replaceable sealing mechanism comprises a sealing assembly arranged at the end of the heat exchanger connecting pipe (1), a connecting limiting assembly arranged at the connecting part between the sealing assembly and the heat exchanger connecting pipe (1), and an operating assembly arranged in the connecting limiting assembly.

2. The tube structure of a heat exchanger according to claim 1, wherein: The sealing assembly comprises an embedded groove (100) opened at the end of the inner wall of the heat exchanger connecting pipe (1) and a sealing rubber ring (101) arranged in the embedded groove (100).

3. The structure of the tubesheet of a heat exchanger according to claim 2, wherein: The connecting limiting assembly comprises connecting grooves (200) symmetrically opened at the inner wall of the embedded groove (100) on both sides and connecting blocks (201) symmetrically fixed on both sides of the sealing rubber ring (101), and the connecting blocks (201) are clamped and connected with the connecting grooves (200).

4. The structure of the tubesheet of a heat exchanger according to claim 3, wherein: The connecting blocks (201) are symmetrically provided with limiting grooves (300) on both sides and elastic limiting buckles (301) symmetrically fixed on the inner wall of the connecting grooves (200), and the elastic limiting buckles (301) are clamped and connected with the limiting grooves (300).

5. The structure of tubesheet of a heat exchanger according to claim 4, wherein: The operating assembly comprises a groove (400) opened at the end of the connecting block (201) and a pushing block (401) fixed in the connecting groove (200), and the inner wall of the connecting groove (200) is provided with an arc-shaped groove (402).

6. The tube sheet structure of a heat exchanger according to claim 1, wherein: The mounting butt joint mechanism comprises butt joint grooves (500) symmetrically opened at the end of the flange plate (2) and butt joint blocks (501) symmetrically fixed on the inner wall of the butt joint grooves (500).

7. The structure of the tubesheet of a heat exchanger according to claim 6, wherein: The cross section of the butt joint groove (500) is rectangular.

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