Pre-installed heat exchange tube guiding tool

Abstract

The utility model relates to pressure vessel manufacturing technical field discloses a kind of preinstalled heat exchange pipe guiding tool, and guiding structure includes the guiding head of the head of conical and guiding pipe, the outer diameter of guiding head and guiding pipe is same with the outer diameter of heat exchange pipe to be installed, tail of guiding head is connected with one end of guiding pipe, guiding head and guiding pipe pass through the heat exchange pipe installation site reserved on support structure, so that guiding pipe is detachably set on support structure. By guiding structure is set as conical guiding head and guiding pipe, and make the structure of guiding head and guiding pipe connection preinstallation in the heat exchange pipe installation site reserved on support structure, heat exchange pipe is installed when reverse set on guiding head and advance into installation site, can accurately, conveniently complete the installation of heat exchange pipe, solve the technical problem that guiding head needs to be frequently replaced when heat exchange pipe is darkly penetrated in prior art, and guiding head is easy to drop into device.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel manufacturing technology, specifically to a heat exchanger tube guide fixture for the pre-installation of heat exchanger tubes with concealed penetrations. Background Technology

[0002] In the manufacturing process of heat exchangers, the choice of tube bundle support method and tube insertion method often has a certain impact on the product manufacturing cycle and manufacturing cost. Common installation methods are: 1. Exposed tube support and exposed tube insertion: After the tube bundle assembly is manufactured, the shell and tube bundle are installed; 2. Concealed tube insertion: After the tube bundle assembly is manufactured, the support plate is assembled in place inside the shell, and then the entire tube is inserted. This is usually used when the tube bundle assembly cannot be fitted to the shell after manufacturing. In the existing technology, sometimes due to the limitations of the heat exchanger's own structure, only methods such as... Figure 1 The concealed tube method is shown for installation. The concealed tube method has the following problems: 1. Concealed tubes require frequent replacement of the guide head; typically, installing one heat exchanger requires a large number of guide heads, resulting in high costs; 2. During concealed tube installation, there is a risk that the guide head may fall into the device. Even with expansion-type guide heads, there is still a risk of them falling during actual use. Guide heads that fall into the device cannot be retrieved by personnel, which will have a certain impact on the operational quality of the product. Utility Model Content

[0003] To address the technical problem in existing technologies where the heat exchange tube requires frequent replacement of the guide head during concealed tube insertion and the guide head is prone to falling into the device, this utility model proposes a pre-installed heat exchange tube guiding fixture.

[0004] The pre-installed heat exchanger tube guide fixture includes a support structure and a guide structure. A plurality of guide structures pass through a plurality of heat exchanger tube mounting positions reserved on the support structure, thereby being detachably mounted on the support structure. The guide structure includes a guide head with a tapered head and a guide tube. The outer diameter of the guide head and the guide tube is the same as the outer diameter of the heat exchanger tube to be installed. The tail of the guide head is connected to one end of the guide tube. The guide head and the guide tube pass through the heat exchanger tube mounting positions reserved on the support structure, thereby allowing the guide tube to be detachably mounted on the support structure.

[0005] The aforementioned pre-installed heat exchanger tube guide fixture has a fixing groove around the head of the guide head, which matches the inner diameter of the heat exchanger tube to be installed.

[0006] The aforementioned pre-installed heat exchanger tube guide fixture has a support structure consisting of multiple support plates installed side by side.

[0007] The aforementioned pre-installed heat exchanger tube guide fixture includes a baffle plate and a tube sheet as its support plate.

[0008] The beneficial effects of this utility model include: by setting the guide structure as a tapered guide head and guide tube, and pre-installing the structure connecting the guide head and guide tube in the reserved heat exchange tube installation position on the support structure, the heat exchange tube can be installed accurately and conveniently by reverse-fitting it onto the guide head and pushing it into the installation position. This solves the technical problem in the prior art that the guide head needs to be frequently replaced when the heat exchange tube is concealed, and the guide head is easy to fall into the device. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a conventional tube-insertion method in the existing technology.

[0010] Figure 2 This is a schematic diagram of the pre-installed heat exchanger tube guide fixture of this utility model.

[0011] Figure 3 This is a schematic diagram of the pre-installation method of the guide structure of the pre-installed heat exchanger tube guide fixture of this utility model.

[0012] Figure 4 This is a schematic diagram of the heat exchanger tube installation method of the pre-installed heat exchanger tube guide fixture of this utility model.

[0013] Figure 5 This is a schematic diagram showing the connection between the guide head and the guide structure of the pre-installed heat exchanger tube guide fixture of this utility model.

[0014] The diagram is labeled as follows: 1-support structure, 11-support block, 2-guide structure, 21-guide head, 22-guide tube, 23-fixed groove. Detailed Implementation

[0015] The present invention will now be described in conjunction with the accompanying drawings.

[0016] Example 1: like Figures 2-4 The diagram shows a pre-installed heat exchanger tube guide fixture of this utility model, including a support structure 1 and a guide structure 2. A plurality of guide structures 2 pass through a plurality of heat exchanger tube mounting positions reserved on the support structure 1, thereby being detachably mounted on the support structure 1. The guide structure 2 includes a guide head 21 with a tapered head and a guide tube 22. The tapered guide head 21 can match the inner diameter of the heat exchanger tube to be installed, so that the heat exchanger tube is sleeved on the head of the guide head 21. The outer diameter of the guide head 21 and the guide tube 22 is the same as the outer diameter of the heat exchanger tube to be installed. The tail of the guide head 21 is connected to one end of the guide tube 22. The guide head 21 and the guide tube 22 pass through the heat exchanger tube mounting positions reserved on the support structure 1, thereby allowing the guide tube 22 to be detachably mounted on the support structure 1 and matched with the heat exchanger tube mounting positions. Assuming the installation direction of the heat exchanger tube relative to the support structure 1 is positive, the guide structure 2 is set in the opposite direction within the heat exchanger tube mounting positions reserved on the support structure 1.

[0017] Furthermore, such as Figure 2 and Figure 5 As shown, a fixing groove 23 is provided around the head of the guide head 21. The fixing groove 23 matches the inner diameter of the heat exchange tube to be installed. When the heat exchange tube is connected to the head of the guide head 21, the fixing groove 23 can make the connection more stable and prevent the heat exchange tube from shaking on the conical guide head 21.

[0018] Furthermore, the support structure 1 is composed of a plurality of support plates 11 installed in parallel. Each support plate 11 has a plurality of heat exchange tube mounting holes reserved at corresponding positions. When all support plates 11 are installed, the heat exchange tube mounting holes between the support plates 11 correspond to each other to form a plurality of heat exchange tube mounting positions for installing heat exchange tubes.

[0019] Furthermore, the support plate 11 includes baffles and tube sheets, both of which are common structures in heat exchangers in the prior art.

[0020] In this embodiment, multiple support plates 11 are first installed side-by-side on the support structure. Then, the guide head 21 passes through the pre-reserved heat exchange tube installation position on each support plate 11 during installation. The guide head 21 then pulls the guide tube 22 connected to it and inserts it into the guide tube installation position. Finally, the entire guide structure 2 passes through the support structure 1, completing the pre-installation of the guide fixture described in this embodiment. Subsequently, the heat exchange tube is installed using this embodiment. The heat exchange tube is fitted onto the fixing groove 23 on the guide head 21, and then pushed towards the support structure 1, so that the heat exchange tube follows the guide structure 2 through the pre-reserved heat exchange tube installation position on the support structure 1. After the heat exchange tube has completely passed through the support structure 1, the guide head 21 is removed from the heat exchange tube to complete the recovery of the guide head 21 and the guide tube 22.

[0021] Compared with the prior art, the pre-installed heat exchanger tube guiding fixture provided by this utility model pre-installs the guide head and guide tube structure in the heat exchanger support structure, and puts the heat exchanger tube on the guide head during installation. Multiple guide tubes can be pushed into the heat exchanger tube installation position at the same time, that is, the guide head is installed in reverse at one end of the heat exchanger tube. This solves the technical problems of difficulty in directly inserting tubes through the guide head, the need for frequent replacement, and the guide head easily falling into the device.

Claims

1. A pre-installed heat exchanger tube guide fixture, comprising a support structure (1) and a guide structure (2), wherein a plurality of the guide structures (2) pass through a plurality of heat exchanger tube mounting positions reserved on the support structure (1), thereby being detachably mounted on the support structure (1), characterized in that: The guide structure (2) includes a guide head (21) with a tapered head and a guide tube (22). The outer diameter of the guide head (21) and the guide tube (22) is the same as the outer diameter of the heat exchange tube to be installed. The tail of the guide head (21) is connected to one end of the guide tube (22). The guide head (21) and the guide tube (22) pass through the heat exchange tube installation position reserved on the support structure (1), so that the guide tube (22) is detachably set on the support structure (1).

2. The pre-installed heat exchanger tube guiding fixture according to claim 1, characterized in that: The guide head (21) is surrounded by a fixing groove (23), which matches the inner diameter of the heat exchange tube to be installed.

3. The pre-installed heat exchanger tube guiding fixture according to claim 1, characterized in that: The support structure (1) is composed of a plurality of support plates (11) installed side by side.

4. The pre-installed heat exchanger tube guiding fixture according to claim 3, characterized in that: The support plate (11) includes a baffle plate and a tube sheet.

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