Pipeline welding structure for air temperature type vaporizer
By designing the connecting pipe with through-holes in the air-temperature vaporizer and combining it with the step hole of the star tube to form a fillet weld, the problem of U-shaped connecting pipe blocking liquid hydrogen flow causes welding overheating, and the stability of the welding site is achieved and Increased intensity.
Patent Information
- Application Number
- CN202421224024.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In an air-temperature vaporizer, the end face of the pipe head of the U-shaped connection blocks the flow of liquid hydrogen, causing heat accumulation at the welding and affecting the welding strength.
Design a pipe welded structure for air-temperature vaporizer. The end of the connection pipe is equipped with a through hole, inserted into the step hole of the star tube to form a corner weld. The distance between the through hole and the end surface of the connection pipe is smaller than the depth of the step hole. The number of holes is at least two, and it is evenly arranged along the pipe wall, and the width of the bearing surface is equal to the thickness of the pipe to avoid the pipe protruding.
It effectively avoids welding overheating caused by liquid hydrogen erosion, ensures that the weld is firm, reduces heat accumulation, and improves welding strength.
Smart Images
Figure CN222316212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pipeline connection structures, in particular to a pipeline welding structure for an air-temperature vaporizer. Background Art
[0002] At present, the star-shaped tubes in the air-temperature vaporizer need to be connected to each other through the U-shaped tube. The tube head of the U-shaped tube is inserted into the tube body of the star-shaped tube, and then welded at the end face of the tube head of the star-shaped tube. However, since liquid hydrogen is running inside the pipeline, the end face of the tube head of the U-shaped tube will block the liquid hydrogen during long-term operation. The repeated flushing of liquid hydrogen will generate heat, which will be transferred to the welding point, causing the weld to crack and affecting the welding strength.
[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0004] Aiming at the deficiencies of the prior art, the utility model discloses a pipeline welding structure for an air-temperature vaporizer.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A pipe welding structure for an air-temperature vaporizer includes a pipe connecting tube, a through hole is opened on the pipe wall at the end of the pipe connecting tube; and a star-shaped pipe, a step hole is provided at the end of the star-shaped pipe, the aperture of the step hole is larger than the inner pipe diameter of the star-shaped pipe, and the pipe connecting tube is inserted into the step hole.
[0007] Furthermore, the step hole is provided with a receiving surface, the receiving surface is a plane, and the end surface of the connecting pipe abuts against the receiving surface.
[0008] Furthermore, the width of the receiving surface is equal to the thickness of the connecting pipe.
[0009] Furthermore, the number of the through holes is at least two.
[0010] Furthermore, the through holes are evenly arranged along the outer edge of the pipe wall of the connecting pipe.
[0011] Furthermore, the distance between the through hole and the end surface closest to the connecting pipe is smaller than the depth of the step hole.
[0012] Furthermore, the end surface of the star-shaped tube and the connecting tube are welded to form a fillet weld.
[0013] The beneficial effects of the utility model are as follows:
[0014] 1. The end of the pipe is embedded in the step hole. The end face of the pipe does not block the flow of liquid hydrogen, thereby avoiding the accumulation of heat at the weld due to the scouring of liquid hydrogen. The through hole provides space at the pipe wall of the pipe to facilitate the flow of liquid hydrogen in the gap, which is also conducive to reducing the repeated scouring of liquid hydrogen, further ensuring that no excessive heat is generated. The combination of the two can avoid overheating at the weld and ensure that the weld is firm.
[0015] 2. The width of the receiving surface is consistent with the thickness of the connecting pipe, so as to avoid the connecting pipe protruding from the inner wall of the star-shaped tube to block the flow of liquid hydrogen, and further reduce the heat generated by the scouring of liquid hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the half-section structure of the pipe welding structure for an air-temperature vaporizer.
[0017] In the figure: 1, connecting pipe; 11, through hole; 2, star-shaped pipe; 21, step hole; 22, receiving surface; 3, fillet weld. DETAILED DESCRIPTION
[0018] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.
[0019] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.
[0020] Example:
[0021] A pipe welding structure for an air temperature vaporizer, such as Figure 1 As shown, Figure 1 It is a schematic cross-sectional structure diagram of a pipeline welding structure for a warm-type vaporizer, comprising a connecting pipe 1 and a star-shaped pipe 2. The connecting pipe 1 is inserted into the star-shaped pipe 2. The end face of the star-shaped pipe 2 and the connecting pipe 1 are welded at the joint to form a fillet weld 3, thereby connecting the two.
[0022] like Figure 1As shown, a through hole 11 is opened on the pipe wall at the end of the pipe 1, and the number of the through holes 11 is at least two through holes 11, and the through holes 11 are evenly distributed along the outer edge of the pipe 1, and the through holes 11 point to the central axis of the pipe 1. When the pipe 1 and the star-shaped pipe 2 are connected, the outer wall of the pipe 1 and the inner wall of the star-shaped pipe 2 are against each other, and the through holes 11 provide space at the pipe wall of the pipe 1 to facilitate the flow of liquid hydrogen in the gap, thereby reducing the impact of liquid hydrogen on the pipeline when the liquid hydrogen flow is too large, resulting in excessive heat and affecting the stability of the fillet weld 3.
[0023] like Figure 1 As shown, a stepped hole 21 is provided at the end of the star-shaped tube 2, the aperture of the stepped hole 21 is larger than the inner diameter of the star-shaped tube 2, and the connecting pipe 1 is inserted into the stepped hole 21. The depth of the stepped hole 21 is larger than the distance between the through hole 11 and the closest end surface of the connecting pipe 1, and the opening of the through hole 11 points to the inner wall surface of the stepped hole 21.
[0024] like Figure 1 As shown, the step hole 21 is provided with a receiving surface 22, which is a plane. When the pipe 1 is inserted to a certain depth, the end face of the pipe 1 abuts against the receiving surface 22, and the pipe 1 reaches the designated position of the connection. The width of the receiving surface 22 is equal to the thickness of the pipe 1, so that the inner wall of the pipe 1 is prevented from protruding from the inner wall of the star-shaped pipe 2, reducing the obstruction to the flow of liquid hydrogen, which is conducive to reducing the impact of liquid hydrogen, reducing the heat generated, and ensuring the stability of the weld.
[0025] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0026] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A pipe welding structure for an air-temperature vaporizer, characterized in that: It comprises a connecting pipe, and a through hole is opened on the pipe wall at the end of the connecting pipe; It comprises a star-shaped tube, the end of which is provided with a step hole, the diameter of which is larger than the inner tube diameter of the star-shaped tube, and the connecting tube is inserted into the step hole.
2. The pipe welding structure for an air-temperature vaporizer according to claim 1 is characterized in that: The step hole is provided with a receiving surface, the receiving surface is a plane, and the end surface of the connecting pipe abuts against the receiving surface.
3. The pipe welding structure for an air-temperature vaporizer according to claim 2 is characterized in that: The width of the receiving surface is equal to the thickness of the connecting pipe.
4. The pipe welding structure for an air-temperature vaporizer according to claim 1, characterized in that: The number of the through holes is at least two.
5. The pipe welding structure for an air-temperature vaporizer according to claim 4 is characterized in that: The through holes are evenly arranged along the outer edge of the pipe wall of the connecting pipe.
6. The pipe welding structure for an air-temperature vaporizer according to claim 1, characterized in that: The distance between the through hole and the end surface closest to the connecting pipe is smaller than the depth of the step hole.
7. The pipe welding structure for an air-temperature vaporizer according to claim 1, characterized in that: The end surface of the star-shaped tube and the connecting tube are welded to form a fillet weld.