Liquid storage tank barrel and pipeline connecting structure
By setting a limiting part at the connection between the cylinder and the pipeline of the liquid storage tank, the problem of not being tightly connected to the cylinder is solved, the connection strength and welding quality are improved, and the solder flows evenly.
Patent Information
- Application Number
- CN202421111023.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The air outlet pipe of the liquid storage tank is not closely connected to the cylinder, resulting in insufficient assembly accuracy and welding quality, which is greatly affected by manufacturing errors.
A limiting part is provided at the connection between the liquid storage tank cylinder and the pipeline, and the connection strength and stability are improved through the abutment of the limiting part, and the contact area is reduced through the bump or convex rib structure to optimize the welding effect.
Improve the connection strength and stability between the connector and the communication port, ensure uniform solder flows in, avoid solder spillage, and improve solder quality.
Smart Images
Figure CN222257126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid storage tanks, in particular to a liquid storage tank cylinder and pipeline connection structure. Background Art
[0002] Liquid storage tanks are used in refrigeration systems to store heat exchange media in refrigeration systems. Both ends of the liquid storage tanks are usually provided with an inlet and an outlet.
[0003] A liquid storage tank is usually provided with an air outlet pipe at the outlet, and the gaseous medium can be transported outward from the air outlet pipe. In existing liquid storage tanks, the air outlet pipe and the cylinder are generally assembled first and then welded and fixed. Some liquid storage tanks also add a connecting pipe between the air outlet pipe and the cylinder to facilitate the connection. However, due to manufacturing errors and other reasons, in the traditional assembly method, after the connecting pipe is inserted, the inner and outer wall surfaces of the connecting pipe cannot completely produce complete circumferential surface contact with the air outlet pipe and the cylinder, resulting in low assembly accuracy, insufficient tightness and stability of the connection, and affecting the welding quality. Utility Model Content
[0004] Based on this, the utility model provides a liquid storage tank cylinder and pipeline connection structure for the above technical problems.
[0005] A liquid storage tank cylinder and pipeline connection structure, the liquid storage tank cylinder and pipeline connection structure comprising:
[0006] The lip of the injector is configured to extend the life of the injector and to provide a lip seal for the injector, wherein the lip seal is configured to extend the life of the injector and to provide a seal for the injector. The lip seal is configured to extend the life of the injector and to provide a lip seal for the injector.
[0007] With such a configuration, the limiting portion between the connecting pipe and the cylinder of the liquid storage tank abuts against one of the two. Compared with the circumferential contact and abutment between the outer wall of the connecting pipe and the inner wall of the connecting port, the limiting portion can increase the abutment pressure by reducing the contact area between the outer wall of the connecting pipe and the inner wall of the connecting port, thereby increasing the connection strength between the connecting pipe and the inner wall of the connecting port. Similarly, the abutment between the air outlet pipe and the connecting pipe can also be more tightly and stably abutted by the limiting portion. In addition, due to the existence of the limiting portion, a gap is formed between the air outlet pipe, the connecting pipe and the inner wall of the connecting port, and the gap can allow solder to flow in to prevent the solder from overflowing.
[0008] In one embodiment, the limiting portion is configured as a convex point structure; and / or the limiting portion is configured as a convex rib structure.
[0009] In one embodiment, the limiting portion is configured as a convex rib structure, and the convex rib structure extends L1 along the axial direction of the liquid storage tank cylinder, and L1 satisfies: 5mm≤L1≤8mm.
[0010] In one embodiment, the limiting portion provided on the connecting pipe is a first limiting portion, and there are multiple first limiting portions, and the multiple first limiting portions are evenly spaced along the circumference of the outer wall of the connecting pipe; the limiting portion provided on the air outlet pipe is a second limiting portion, and there are multiple second limiting portions, and the multiple second limiting portions are evenly spaced along the circumference of the outer wall of the air outlet pipe.
[0011] In one embodiment, the first limiting portion is located on the outer wall of the connecting pipe, a groove is formed on the inner wall of the connecting pipe corresponding to the position of the first limiting portion, the second limiting portion is located on the outer wall of the outlet pipe, and at least part of the second limiting portion is located in the groove.
[0012] In one embodiment, the first limiting portion and the second limiting portion are alternately arranged in the radial direction of the liquid storage tank cylinder.
[0013] In one embodiment, the protruding height of the limiting portion along the radial direction of the connecting pipe is H, satisfying 0.5mm≤H≤0.7mm; the gap between the inner wall of the connecting port and the outer wall of the connecting pipe is X1, satisfying: 0.1mm≤H-X1≤0.25mm, 0.2mm≤X1≤0.6mm, and the connecting pipe is interference fit with the connecting port through the limiting portion.
[0014] In one embodiment, the gap between the inner wall of the connecting pipe and the outer wall of the air outlet pipe is X2, satisfying: 0.1mm≤H-X2≤0.25mm, 0.2mm≤X2≤0.6mm, and the air outlet pipe is interference fit with the connecting pipe through the limiting portion.
[0015] In one embodiment, the liquid storage tank cylinder includes a main body and an end cover, and the main body and the end cover cooperate to form a cavity for accommodating the connecting pipe. The end cover is provided on at least one end of the main body, and a flip hole is opened on the end cover along the axial direction of the main body. The flip hole extends toward the outside of the cavity, and the inner wall of the flip hole forms the connecting port.
[0016] In one embodiment, an end of the connecting pipe located in the communicating port is spaced apart from an end of the turning hole away from the cavity by a distance L2, and L2 satisfies: 0.3 mm ≤ L2 ≤ 0.8 mm.
[0017] Compared with the prior art, the utility model provides a limiting portion between the inner walls of the outlet pipe, the connecting pipe and the end cover forming a connecting port, and improves the installation stability among the three through the abutment effect of the limiting portion, and arranges the limiting portion as a rib or a convex point to reduce the contact area, thereby further improving the connection strength among the three. The effect of the limiting portion is further optimized by staggered arrangement in the radial direction, ensuring the gap between the three to allow uniform soldering. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A cross-sectional view of one embodiment of the connection structure between the liquid storage tank cylinder and the pipeline provided by the utility model;
[0019] Figure 2 A top view of one embodiment of the connection structure between the liquid storage tank cylinder and the pipeline provided by the utility model;
[0020] Figure 3 A three-dimensional diagram of one embodiment of the connection structure between the liquid storage tank cylinder and the pipeline provided by the utility model;
[0021] Figure 4 A three-dimensional diagram of one embodiment of the air outlet pipe provided by the utility model;
[0022] Figure 5 A three-dimensional diagram of one embodiment of the air outlet pipe provided by the utility model;
[0023] Figure 6 A cross-sectional view of one embodiment of the air outlet pipe provided by the utility model;
[0024] Figure 7 A top view of an embodiment of the connection structure between the liquid storage tank cylinder and the pipeline provided by the utility model using a laser welding process;
[0025] Figure 8 A partial top view of one embodiment of the liquid storage tank cylinder and pipeline connection structure provided by the utility model.
[0026] The symbols in the figure mean the following:
[0027] 100. Liquid storage tank body and pipeline connection structure; 10. End cover; 11. Communication port; 20. Connecting pipe; 21. First limiting part; 30. Air outlet pipe; 31. Second limiting part. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0029] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0033] The utility model provides a liquid storage tank cylinder and pipeline connection structure 100, wherein a limiting portion is provided between at least two of the liquid storage tank cylinder (not shown in the figure), the connecting pipe 20 and the air outlet pipe 30, and the connection strength of the three is improved by the abutment effect of the limiting portion.
[0034] See also Figure 1-Figure 3 The liquid storage tank cylinder and pipeline connection structure 100 includes a liquid storage tank cylinder, a connecting pipe 20 and an air outlet pipe 30, a connecting port 11 is opened at one end of the liquid storage tank cylinder, the connecting pipe 20 is located in the liquid storage tank cylinder, and the outer wall of the connecting pipe 20 at one end close to the connecting port 11 abuts against the inner wall of the connecting port 11, and a part of the air outlet pipe 30 is inserted into the connecting port 11, and the outer wall of the air outlet pipe 30 abuts against the inner wall of the connecting pipe 20; wherein a limiting portion is provided between the inner wall of the connecting port 11 and the outer wall of the connecting pipe 20, the limiting portion protrudes from one of the inner wall of the connecting port 11 and the outer wall of the connecting pipe 20 along the radial direction of the connecting pipe 20, and abuts against the other; and / or, a limiting portion is provided between the outer wall of the air outlet pipe 30 and the inner wall of the connecting pipe 20, the limiting portion protrudes from one of the outer wall of the air outlet pipe 30 and the inner wall of the connecting pipe 20 along the radial direction of the connecting pipe 20, and abuts against the other.
[0035] In this way, the limiting portion between the connecting pipe 20 and the cylinder of the liquid storage tank abuts against one of the two. Compared with the circumferential contact and abutment between the outer wall of the connecting pipe 20 and the inner wall of the connecting port 11, the limiting portion can increase the abutment pressure by reducing the contact area between the outer wall of the connecting pipe 20 and the inner wall of the connecting port 11, thereby increasing the connection strength between the connecting pipe 20 and the inner wall of the connecting port 11. Even if there is a processing error between the connecting pipe 20 and the connecting port 11, the limiting portion can abut against the inner wall of the connecting port 11 to ensure a stable connection between the two. Similarly, the abutment between the air outlet pipe 30 and the connecting pipe 20 can also be made tighter and more stable by the abutment of the limiting portion. In addition, due to the existence of the limiting portion, a gap is formed between the air outlet pipe 30, the connecting pipe 20 and the inner wall of the connecting port 11, and the gap can allow solder to flow in, thereby avoiding solder overflow and improving welding quality.
[0036] For example, in the first embodiment, a stopper is provided on the outer wall of the connecting pipe 20, and the stopper on the connecting pipe 20 protrudes outwardly in the radial direction and abuts against the inner wall of the connecting port 11. At the same time, a stopper is also provided on the outer wall of the air outlet pipe 30, and the stopper on the air outlet pipe 30 protrudes outwardly in the radial direction and abuts against the inner wall of the connecting pipe 20.
[0037] Of course, in other embodiments, it can also be arranged that only a limiting portion is provided between the air outlet pipe 30 and the connecting pipe 20, or the limiting portion is connected to the inner wall of the connecting port 11, and the limiting portion can also be connected to the inner wall of the connecting pipe 20. It is not limited to the above-mentioned embodiments and will not be described one by one here. The following is a detailed description of the setting method of embodiment one.
[0038] For further information, see Figure 4-Figure 5 The limiting part is configured as a convex point structure protruding along the radial direction, and / or the limiting part is configured as a convex rib structure extending along the axial direction. The limiting part with a convex point structure can form point contact between the connecting pipe 20 and the air outlet pipe 30 and between the connecting pipe 20 and the connecting port 11, and the abutment effect is better. Alternatively, the limiting part configured as a convex rib structure can form a line contact, which can also increase the abutment pressure compared to the surface contact.
[0039] In this embodiment, the convex point structure and the convex rib structure are directly formed by stamping to reduce material cost. In other embodiments, additional structures may be provided on the outer side of the wall surface.
[0040] For further information, see Figure 6 The convex rib structure extends L1 along the axial direction of the liquid storage tank body, and L1 satisfies: 5mm≤L2≤8mm. The convex rib structure extends along the axial direction of the liquid storage tank body, which is convenient for the assembly of the connecting pipe 20 and the air outlet pipe 30, and the extension length of the convex rib structure is reasonably set, which not only prevents the convex rib from being too short to achieve the supporting and abutting effect, but also avoids the waste of materials, increases the processing cost and assembly difficulty.
[0041] Exemplarily, L1 is set to 5 mm, 6 mm, 7 mm or 8 mm, etc., as long as it is between the two endpoint values.
[0042] It can be understood that in other embodiments, the rib structure may also be arranged along the circumferential direction or inclined relative to the axial direction.
[0043] The limiting portion can be formed by the outer wall of the connecting pipe 20 protruding outward, or can be formed by the inner wall of the connecting pipe 20 protruding outward. When the inner wall of the connecting pipe 20 protrudes outward, a groove can also be formed on the inner wall of the connecting pipe 20, that is, the side wall of the connecting pipe 20 protrudes outward as a whole to form the limiting portion and the groove, and this molding method is simple to process and saves consumables.
[0044] The limiting portion may also be formed by protruding outward from the inner wall of the air outlet pipe 30 , or directly constructed and formed on the outer wall of the air outlet pipe 30 , similar to the formation method of the limiting portion on the connecting pipe 20 mentioned above, which will not be repeated here.
[0045] The limiting part provided on the connecting pipe 20 is a first limiting part 21, and there are multiple first limiting parts 21, and the multiple first limiting parts 21 are evenly spaced along the circumference of the outer wall of the connecting pipe 20; the limiting part provided on the air outlet pipe 30 is a second limiting part 31, and there are multiple second limiting parts 31, and the multiple second limiting parts 31 are evenly spaced along the circumference of the outer wall of the connecting pipe 20. Since the first limiting part 21 and the second limiting part 31 are evenly spaced along the circumference, a circumferentially uniform abutment effect can be provided, so that the abutment between the connecting pipe 20, the air outlet pipe 30 and the inner wall of the connecting port 11 is more stable.
[0046] Preferably, the first limiting portion 21 and the second limiting portion 31 are staggered in the radial direction of the liquid storage tank cylinder, so that the connecting pipe 20 and the air outlet pipe 30 can be prevented from loosening, making the connection between the two more stable, and ensuring the gap distance to ensure that the solder can flow in.
[0047] Furthermore, the first limiting portion 21 is located on the outer wall of the connecting pipe 20, a groove is formed on the inner wall of the connecting pipe 20 corresponding to the position of the first limiting portion 21, the second limiting portion 31 is located on the outer wall of the outlet pipe 30, and at least part of the second limiting portion 31 is located in the groove.
[0048] Along the circumferential direction, the number of the first limiting parts 21 and the second limiting parts 31 are both 3-6, which can prevent the first limiting parts 21 and the second limiting parts 31 from being too few and thus causing insufficient supporting effect, and also avoid the first limiting parts 21 and the second limiting parts 31 from being too many and thus causing a waste of materials due to the inability to achieve a better abutment effect.
[0049] Exemplarily, the number of the first limiting portions 21 and the second limiting portions 31 is 3, 4, 5 or 6.
[0050] The limiting part protrudes from the wall surface connected to the limiting part along the radial direction of the liquid storage tank body, and the protruding height is H, which satisfies 0.5mm≤H≤0.7mm. In this way, the protruding height of the limiting part is reasonably set to ensure that it can play a good abutment effect while avoiding protruding too high to affect its structural strength and prevent the limiting part from breaking.
[0051] Exemplarily, the limit portion is set to 0.5 mm, 0.55 mm, 0.6 mm or 0.7 mm, etc., but is not limited to the above endpoint values.
[0052] See also Figure 8 , define the wall surface connected to the limiting part as the connecting surface, the wall surface abutted by the limiting part as the abutting surface, and there is a gap X1 between the connecting surface (the inner wall of the connecting port 11) and the abutting surface (the outer wall of the connecting pipe 20), satisfying: 0.1mm≤H-X1≤0.25mm, and 0.2mm≤X1≤0.6mm. In other words, the limiting part and the surface abutted by it are interference fit, specifically, the first limiting part 21 and the inner wall of the connecting port 11 are interference fit, and the second limiting part 31 and the inner wall of the connecting pipe 20 are interference fit, so as to further enhance the assembly tightness between the connecting pipe 20, the air outlet pipe 30 and the inner wall of the connecting port 11. On this basis, the amount of interference fit is reasonably set to prevent the gap X1 from being too small to cause difficulties in assembly, the interference fit is too tight to cause material damage, and the gap X1 is too large to achieve a good interference abutment effect.
[0053] For example, the values of H-X1 are 0.1 mm, 0.15 mm, 0.2 mm and 0.25 mm, but are not limited to the above.
[0054] There is a gap X2 between the inner wall of the connecting pipe 20 and the outer wall of the air outlet pipe 30, which satisfies 0.1mm≤H-X2≤0.25mm, and 0.2mm≤X2≤0.6mm. In this way, the limiting part can also make the air outlet pipe 30 and the connecting pipe 20 have an interference fit to improve the connection strength. The relationship between the gap X2 and H is reasonably set, which can ensure that the solder can flow in smoothly and prevent the gap from being too large and the solder cannot fill the gap, which cannot achieve a good welding effect.
[0055] Exemplarily, the value of X2 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm.
[0056] The liquid storage tank cylinder includes a body and an end cover 10, which cooperate to form a cavity for accommodating a pipe 20. The end cover 10 is provided on at least one end of the body, and a folded hole is provided on the end cover 10 along the axial direction of the body, the folded hole extends toward the outside of the cavity, and the inner wall of the folded hole forms a communication port 11. The communication port 11 is formed by the folded hole, and the area that can be set to abut the pipe 20 is larger, and the processing is convenient.
[0057] Furthermore, the end of the pipe 20 located in the communication port 11 is spaced apart from the end of the opening away from the cavity by L2, and L2 satisfies: 0.3mm≤L2≤0.8mm. The spaced apart area can be used to place the solder ring, and can also make the solder flow more uniform, facilitate solder flow, increase welding strength, and eliminate the need for furnace welding and other processes. Brass can be used to replace copper furnace welding, saving costs.
[0058] Exemplarily, the value of L2 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, and 0.8 mm, but is not limited to the above two endpoint values.
[0059] See also Figure 7 In another embodiment, the air outlet pipe 30, the connecting pipe 20 and the inner wall of the connecting port 11 can also be welded by laser welding. When the laser welding process is adopted, no gap is required between the three, and the first limiting portion 21 and the second limiting portion 31 do not need to be staggered.
[0060] In this embodiment, the first limiting portion 21 and the second limiting portion 31 are correspondingly arranged in the radial direction of the liquid storage tank body, and the outer wall of the second limiting portion 31 is engaged with the groove wall of the groove. In this way, the groove wall of the groove can limit the movement of the second limiting portion 31, so that the connection between the connecting pipe 20 and the air outlet pipe 30 is more stable, and the relative rotation of the two in the circumferential direction is avoided.
[0061] Compared with the prior art, the utility model sets a limiting portion between the inner walls of the air outlet pipe 30, the connecting pipe 20 and the end cover 10 to form a connecting port 11, thereby improving the installation stability among the three through the abutment effect of the limiting portion, and setting the limiting portion as a rib or a convex point to reduce the contact area, thereby further improving the connection strength among the three, and further optimizing the effect of the limiting portion by staggered arrangement in the radial direction, ensuring the gap between the three to allow uniform soldering.
[0062] 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.
[0063] 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 liquid storage tank cylinder and pipeline connection structure, characterized in that: The liquid storage tank cylinder and pipeline connection structure comprises: A liquid storage tank body, one end of which is provided with a communication port (11); A connecting pipe (20), the connecting pipe (20) being located in the cylinder of the liquid storage tank, and the outer wall of one end of the connecting pipe (20) close to the communication port (11) abuts against the inner wall of the communication port (11); An air outlet pipe (30), wherein a portion of the air outlet pipe (30) is inserted into the communication port (11), and an outer wall of the air outlet pipe (30) abuts against an inner wall of the connecting pipe (20); Wherein, a limiting portion is provided between the inner wall of the communication port (11) and the outer wall of the connecting pipe (20), and the limiting portion is protruded from one of the inner wall of the communication port (11) and the outer wall of the connecting pipe (20) along the radial direction of the connecting pipe (20) and abuts against the other; and / or, The limiting portion is provided between the outer wall of the air outlet pipe (30) and the inner wall of the connecting pipe (20), and the limiting portion is protruded from one of the outer wall of the air outlet pipe (30) and the inner wall of the connecting pipe (20) along the radial direction of the connecting pipe (20) and abuts against the other.
2. The liquid storage tank cylinder and pipeline connection structure according to claim 1, characterized in that: The limiting portion is configured as a convex point structure; and / or, The limiting portion is configured as a convex rib structure.
3. The liquid storage tank cylinder and pipeline connection structure according to claim 2, characterized in that: The limiting portion is configured as a convex rib structure, and the convex rib structure extends L1 along the axial direction of the liquid storage tank cylinder, and L1 satisfies: 5mm≤L1≤8mm.
4. The liquid storage tank cylinder and pipeline connection structure according to claim 1, characterized in that: The limiting portion provided on the connecting pipe (20) is a first limiting portion (21), and there are a plurality of the first limiting portions (21), and the plurality of the first limiting portions (21) are evenly spaced along the circumference of the outer wall of the connecting pipe (20); The limiting portion provided on the air outlet pipe (30) is a second limiting portion (31), and there are a plurality of the second limiting portions (31), which are evenly spaced along the circumference of the outer wall of the air outlet pipe (30).
5. The liquid storage tank cylinder and pipeline connection structure according to claim 4, characterized in that: The first limiting portion (21) is located on the outer wall of the connecting pipe (20), and a groove is formed on the inner wall of the connecting pipe (20) corresponding to the position of the first limiting portion (21). The second limiting portion (31) is located on the outer wall of the air outlet pipe (30), and at least a part of the second limiting portion (31) is located in the groove.
6. The liquid storage tank cylinder and pipeline connection structure according to claim 4, characterized in that: The first limiting portion (21) and the second limiting portion (31) are arranged alternately in the radial direction of the liquid storage tank cylinder.
7. The liquid storage tank cylinder and pipeline connection structure according to claim 1, characterized in that: The protruding height of the limiting portion along the radial direction of the connecting pipe (20) is H, which satisfies 0.5 mm ≤ H ≤ 0.7 mm; The gap between the inner wall of the connecting port (11) and the outer wall of the connecting pipe (20) is X1, which satisfies: 0.1mm≤H-X1≤0.25mm, 0.2mm≤X1≤0.6mm, and the connecting pipe (20) is interference-fitted with the connecting port (11) through the limiting portion.
8. The liquid storage tank cylinder and pipeline connection structure according to claim 7, characterized in that: The gap between the inner wall of the connecting pipe (20) and the outer wall of the air outlet pipe (30) is X2, which satisfies: 0.1mm≤H-X2≤0.25mm, 0.2mm≤X2≤0.6mm, and the air outlet pipe (30) is interference-fitted with the connecting pipe (20) through the limiting portion.
9. The liquid storage tank cylinder and pipeline connection structure according to claim 1, characterized in that: The liquid storage tank cylinder comprises a main body and an end cover (10), wherein the main body and the end cover (10) cooperate to form a cavity for accommodating the connecting pipe (20), the end cover (10) is arranged on at least one end of the main body, and a folded hole is opened on the end cover (10) along the axial direction of the main body, the folded hole extends toward the outside of the cavity, and the inner wall of the folded hole forms the connecting port (11).
10. The liquid storage tank cylinder and pipeline connection structure according to claim 9, characterized in that: An end of the connecting pipe (20) located in the communicating port (11) is spaced L2 from an end of the turning hole away from the cavity, and L2 satisfies: 0.3 mm ≤ L2 ≤ 0.8 mm.