A welding fixture for a brazed plate heat exchanger

Abstract

This utility model discloses a welding fixture for a brazed plate heat exchanger, including an inclined tray with a backrest fixedly connected to its rear. A constraint frame is symmetrically arranged between the inclined tray and the backrest, with the lower end of the constraint frame resting on the upper end of the inclined tray. The inclined tray includes a plate body with first anti-slip stripes on its surface. The inclined tray also includes support feet fixedly connected to the lower end of the plate body. The backrest includes a baffle frame with a fixing strip fixedly connected to its lower end, the fixing strip being integrally connected to the plate body. The constraint frame includes a placement strip. The constraint frame is placed on the inclined tray, with the backrest blocking it. The components of the target brazed plate heat exchanger are then placed on the constraint frame, which helps maintain the neatness of the brazed plate heat exchanger components, reducing the possibility of misalignment during welding. This direct placement method, combined with the ability to maintain neatness, improves practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of brazed plate heat exchanger production equipment, and particularly relates to a welding fixture for brazed plate heat exchangers. Background Technology

[0002] The tooling inside the vacuum furnace is mostly made of high-temperature resistant alloy trays or supports with a smooth and flat surface. It can support the stacked heat exchanger components and place them into the vacuum brazing furnace, avoiding direct contact between the components and the furnace body, while reducing deformation at high temperatures. Some tooling is designed with a flow guiding structure to help distribute the temperature evenly inside the furnace.

[0003] Because the components of brazed plate heat exchangers are stacked in a plate shape, there is a lack of constraint when using conventional vacuum furnace bearing fixtures. When the bearing fixtures inside the vacuum furnace are twisted in a local way, the product will be scrapped. This results in the problem that the brazed plate heat exchanger components welded using conventional vacuum furnace bearing fixtures have low practicality.

[0004] To address these issues, we propose a welding fixture for brazed plate heat exchangers. Utility Model Content

[0005] The purpose of this invention is to address the problem of low practicality of conventional vacuum furnace bearing tooling for welding brazed plate heat exchanger components, and to propose a welding tooling for brazed plate heat exchangers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A welding fixture for a brazed plate heat exchanger includes an inclined tray with a backrest fixedly connected to its rear. A constraint frame is symmetrically arranged between the inclined tray and the backrest, with the lower end of the constraint frame resting on the upper end of the inclined tray. The constraint frame is placed on the inclined tray, with the backrest blocking it. The components of the target brazed plate heat exchanger are then placed on the constraint frame, which helps maintain the alignment of the components and reduces the possibility of misalignment during welding. This practical design, combining direct placement with effective alignment control, improves usability.

[0008] Preferably, the tilting tray includes a tray body, and the tray body has a first anti-slip stripe on its surface. The first anti-slip stripe increases the friction between the constraint frame and the tilting tray, thereby improving the stability of the constraint force of the constraint frame on the target brazed plate heat exchanger component.

[0009] Preferably, the tilting tray further includes support feet, which are fixedly connected to the lower end of the tray body. The support feet support the four corners of the tray body, increasing the stability of the tilting tray.

[0010] Preferably, the backrest includes a retaining frame, and a fixing strip is fixedly connected to the lower end of the retaining frame. The fixing strip is fixedly connected to the disc body as a whole. The retaining frame is used to block the back of the constraint frame, preventing the constraint frame from sliding backward and facilitating the restraint of the front and rear positions of the constraint frame.

[0011] Preferably, the constraint frame includes a placement strip, the upper end of which is fixedly connected to a constraint rail, and the lower end of the placement strip contacts the first anti-slip strip. The placement strip is placed on the first anti-slip strip, and the brazed plate heat exchanger component is placed on the placement strip. The constraint rail blocks the corners of the brazed plate heat exchanger component, thereby constraining the component and improving the stability of the placement structure.

[0012] Preferably, the lower end of the placement strip is provided with a second anti-slip strip, which engages with the first anti-slip strip. The engagement of the second and first anti-slip strips increases the anti-slip capability of the restraint frame.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] 1. Place the constraint frame on the inclined tray, use the backrest to block the constraint frame, and place the components of the target brazed plate heat exchanger on the constraint frame. Use the constraint frame to constrain the neatness of the brazed plate heat exchanger components, reduce the possibility of the brazed plate heat exchanger being welded crookedly, and improve practicality by placing them directly and constraining their neatness.

[0015] 2. The first anti-slip stripe is used to increase the friction between the constraint frame and the tilted tray, thereby improving the stability of the constraint force of the constraint frame on the target brazed plate heat exchanger components.

[0016] 3. Use a retaining frame to block the back of the constraint frame to prevent it from sliding backward and to facilitate the front and back position of the constraint frame.

[0017] 4. Place the placement strip on the first anti-slip strip, place the brazed plate heat exchanger component on the placement strip, and use the constraint rails to block the corners of the brazed plate heat exchanger component. Use the constraint rails to constrain the brazed plate heat exchanger component and improve the stability of the placement structure of the brazed plate heat exchanger component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the tilting tray structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the backrest structure of this utility model;

[0021] Figure 4This is a schematic diagram of the constraint frame structure of this utility model.

[0022] In the diagram: 2. Inclined tray; 3. Backrest; 4. Restraint frame; 21. Tray body; 22. First anti-slip stripe; 23. Support leg; 31. Baffle frame; 32. Fixing strip; 41. Placement strip; 42. Second anti-slip stripe; 43. Restraint rail. Detailed Implementation

[0023] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0024] like Figure 1 As shown, a welding fixture for a brazed plate heat exchanger includes an inclined tray 2, a backrest 3 fixedly connected to the rear of the inclined tray 2, and a constraint frame 4 symmetrically arranged between the inclined tray 2 and the backrest 3, with the lower end of the constraint frame 4 placed on the upper end of the inclined tray 2.

[0025] like Figure 1 and 2 As shown, the tilting tray 2 includes a tray body 21, and a first anti-slip stripe 22 is formed on the top of the tray body 21. The first anti-slip stripe 22 increases the friction between the constraint frame 4 and the tilting tray 2.

[0026] like Figure 1 and 2 As shown, the tilting tray 2 also includes support feet 23, which are fixedly connected to the lower end of the tray body 21. The support feet 23 support the four corners of the tray body 21.

[0027] like Figure 1 and 3 As shown, the backrest 3 includes a retaining frame 31, and a fixing strip 32 is fixedly connected to the lower end of the retaining frame 31. The fixing strip 32 is fixedly connected to the disc body 21 as a whole. The retaining frame 31 is used to block the back of the constraint frame 4 to prevent the constraint frame 4 from sliding backward.

[0028] like Figure 1 , 2 As shown in Figure 4, the constraint frame 4 includes a placement bar 41, with a constraint rail 43 fixedly connected to the upper end of the placement bar 41, and the lower end of the placement bar 41 contacting the first anti-slip strip 22. The placement bar 41 is placed on the first anti-slip strip 22, and the brazed plate heat exchanger component is placed on the placement bar 41. The constraint rail 43 blocks the corners of the brazed plate heat exchanger component, thus constraining the component of the brazed plate heat exchanger.

[0029] like Figure 2 and 4As shown, a second anti-slip stripe 42 is provided at the lower end of the placement stripe 41, and the second anti-slip stripe 42 engages with the first anti-slip stripe 22. By utilizing the engagement of the second anti-slip stripe 42 with the first anti-slip stripe 22, the anti-slip capability of the constraint frame 4 is increased.

[0030] Working principle: The constraint frame 4 is placed on the inclined tray 2, and the backrest 3 is used to block the constraint frame 4. The components of the target brazed plate heat exchanger are placed on the constraint frame 4. The constraint frame 4 is used to constrain the neatness of the brazed plate heat exchanger components and reduce the possibility of the brazed plate heat exchanger being welded crookedly.

[0031] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0032] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A brazed plate heat exchanger welding fixture, characterized in that: Includes a tilting tray (2), with a backrest (3) fixedly connected to the rear of the tilting tray (2), and a constraint frame (4) symmetrically provided between the tilting tray (2) and the backrest (3), with the lower end of the constraint frame (4) placed on the upper end of the tilting tray (2).

2. The brazing plate heat exchanger welding tooling of claim 1, wherein: The tilting tray (2) includes a tray body (21), and the tray body (21) has a first anti-slip stripe (22) on its surface.

3. The brazing plate heat exchanger welding tooling of claim 2, wherein: The tilting tray (2) also includes a support foot (23), which is fixedly connected to the lower end of the tray body (21).

4. The brazing plate heat exchanger welding tooling of claim 2, wherein: The backrest (3) includes a frame (31), and a fixing strip (32) is fixedly connected to the lower end of the frame (31). The fixing strip (32) is fixedly connected to the disc body (21) as a whole.

5. The brazed plate heat exchanger welding fixture of claim 2, wherein: The constraint frame (4) includes a placement strip (41), the upper end of which is fixedly connected to a constraint rail (43), and the lower end of the placement strip (41) is in contact with the first anti-slip strip (22).

6. The brazed plate heat exchanger welding tooling of claim 5, wherein: The lower end of the placement strip (41) is provided with a second anti-slip stripe (42), which engages with the first anti-slip stripe (22).

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