Valve connection structure

Abstract

The application relates to the technical field of valves, in particular to a valve connecting structure. The valve connecting structure comprises a valve, a connecting pipe, a locking piece and an isolation part. The valve comprises a first connecting part, and the valve is made of a first metal material. The connecting pipe comprises a second connecting part, the connecting pipe is made of a second metal material, and the first connecting part and the second connecting part are matched with each other. In the axial direction of the connecting pipe, the isolation part is abutted between the first connecting part and the second connecting part and covers at least one of the first connecting part and the second connecting part. The locking piece is sleeved on the outer circumferential side of the first connecting part and the second connecting part, and the isolation part is compressed between the first connecting part and the second connecting part through the locking piece. The isolation part has insulation and / or corrosion resistance, so that the first connecting part and the second connecting part are separated, and potential difference corrosion is avoided.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a valve connection structure. Background Technology

[0002] Because of its good integrity and toughness, and ease of bending, copper is primarily used for piping in air conditioning systems. Various valves are used to control the flow between air conditioning pipes. To reduce costs, valves are gradually being replaced by aluminum alloys instead of copper. In related technologies, valves are connected to pipes via joints, and the valves and pipes are sealed in contact. However, the use of aluminum alloy in the improved valves can easily lead to galvanic corrosion between the different materials when the valve contacts the copper pipes, causing seal failure. Utility Model Content

[0003] Therefore, it is necessary to provide a valve connection structure to reduce or avoid potential difference corrosion between the valve and the pipeline while reducing costs, and to ensure sealing.

[0004] The valve connection structure includes a valve, a connecting pipe, a locking element, and an isolation part; the valve includes a first connecting part made of a first metal material; the connecting pipe includes a second connecting part made of a second metal material, and the first connecting part and the second connecting part cooperate with each other; along the axial direction of the connecting pipe, the isolation part abuts between the first connecting part and the second connecting part, and at least covers one of the first connecting part and the second connecting part; the locking element is sleeved on the outer periphery of the first connecting part and the second connecting part, and the isolation part is pressed between the first connecting part and the second connecting part by the locking element; wherein, there is a potential difference between the first metal material and the second metal material, and the isolation part has insulation and / or corrosion resistance.

[0005] Understandably, the first and second connecting parts cooperate to connect the valve and the connecting pipe. To reduce costs, the valve and the connecting pipe are made of different metals. The valve connection structure uses an isolation part to separate the first and second connecting parts, preventing potential corrosion caused by direct contact between different metals.

[0006] In one embodiment, along the axial direction of the valve connection structure, the first connecting portion has a first mating surface on the side facing the second connecting portion, and the second connecting portion has a second mating surface on the side facing the first connecting portion. The first and second mating surfaces are respectively angled to the axial direction of the valve connection structure. Along the axial direction of the valve connection structure, the isolation portion has a third mating surface on the side facing the first connecting portion, and the third mating surface is fitted with the first mating surface to form a surface seal. The isolation portion has a fourth mating surface on the side facing the second connecting portion, and the fourth mating surface is fitted with the second mating surface to form a surface seal; and / or...

[0007] Along the axial direction of the valve connection structure, the first connecting part has a first mating surface on the side facing the second connecting part, and the first mating surface is set at an angle to the axial direction of the valve connection structure. The second connecting part has a protruding first pressing tip. The isolation part has a third mating surface on the side facing the first connecting part, and the third mating surface is in contact with the first mating surface to form a surface seal. The isolation part has a fourth mating surface on the side facing the second connecting part, and the fourth mating surface is pressed against the first pressing tip to form a line seal. Alternatively, along the axial direction of the valve connection structure, the first connecting part has a protruding second pressing tip on the side facing the second connecting part, the second connecting part has a second mating surface on the side facing the first connecting part, and the second mating surface is set at an angle to the axial direction of the valve connection structure. The isolation part has a third mating surface on the side facing the first connecting part, and the third mating surface is pressed against the second pressing tip to form a line seal. The isolation part has a fourth mating surface on the side facing the second connecting part, and the fourth mating surface is in contact with the second mating surface to form a surface seal.

[0008] In one embodiment, the first mating surface and / or the second mating surface are configured as inclined surfaces.

[0009] In one embodiment, the valve connection structure further includes an assembly portion connected to the isolation portion, the assembly portion and the isolation portion being jointly assembled to one of the first connection portion and the second connection portion.

[0010] In one embodiment, the assembly part includes a first assembly segment connected to the isolation part; the first assembly segment and the isolation part are jointly sleeved on the first connecting part, and the first assembly segment extends along the extension direction of the first connecting part and is attached to the first connecting part; or, the first assembly segment and the isolation part are jointly sleeved on the second connecting part, and the first assembly segment extends along the extension direction of the second connecting part and is attached to the second connecting part.

[0011] In one embodiment, the outer wall or the inner wall of the first connecting portion is recessed along the radial direction of the valve connecting structure to form a first limiting groove, the first limiting groove extending along the extending direction of the first connecting portion and communicating with the outside at one end facing the second connecting portion; or, the outer wall or the inner wall of the second connecting portion is recessed along the radial direction of the valve connecting structure to form a first limiting groove, the first limiting groove extending along the extending direction of the second connecting portion and communicating with the outside at one end facing the first connecting portion.

[0012] The first assembly section is inserted into the first limiting groove, and along the axial direction of the valve connection structure, the first assembly section abuts against the groove wall of the first limiting groove.

[0013] In one embodiment, the assembly part is configured with an assembly cavity, and one of the first connecting part and the second connecting part is inserted into the assembly cavity.

[0014] In one embodiment, the assembly part includes a first assembly section and a second assembly section. Along the radial direction of the valve connection structure, the first assembly section and the second assembly section are respectively disposed on both sides of the isolation part and are arranged in the same direction. The first assembly section, the second assembly section and the isolation part together form an assembly cavity.

[0015] The first connecting portion is inserted into the assembly cavity. Along the radial direction of the valve connection structure, the isolation portion is connected to the first assembly segment on the side near the outer wall of the first connecting portion. The first assembly segment extends along the extension direction of the first connecting portion and is attached to the outer wall of the first connecting portion. The isolation portion is connected to the second assembly segment on the side near the inner wall of the first connecting portion. The second assembly segment extends along the extension direction of the first connecting portion and is attached to the inner wall of the first connecting portion. Alternatively, the second connecting portion is inserted into the assembly cavity. Along the radial direction of the valve connection structure, the isolation portion is connected to the first assembly segment on the side near the outer wall of the second connecting portion. The first assembly segment extends along the extension direction of the second connecting portion and is attached to the outer wall of the second connecting portion. The isolation portion is connected to the second assembly segment on the side near the inner wall of the second connecting portion. The second assembly segment extends along the extension direction of the second connecting portion and is attached to the inner wall of the second connecting portion.

[0016] In one embodiment, the outer wall of the first connecting portion is recessed radially along the valve connecting structure to form a first limiting groove. The first limiting groove extends along the extending direction of the outer wall of the first connecting portion and communicates with the outside at one end facing the second connecting portion. The first assembly segment is inserted into the first limiting groove, and along the axial direction of the valve connecting structure, the first assembly segment abuts against the groove wall of the first limiting groove. And / or, the inner wall of the first connecting portion is recessed radially along the valve connecting structure to form a second limiting groove. The second limiting groove extends along the extending direction of the inner wall of the first connecting portion and communicates with the outside at one end facing the second connecting portion. The second assembly segment is inserted into the second limiting groove, and along the axial direction of the valve connecting structure, the second assembly segment abuts against the groove wall of the second limiting groove. Or...

[0017] The outer wall of the second connecting part is recessed radially along the valve connecting structure to form a first limiting groove. The first limiting groove extends along the extension direction of the outer wall of the second connecting part and communicates with the outside at one end facing the first connecting part. The first assembly section is inserted into the first limiting groove and abuts against the groove wall of the first limiting groove along the axial direction of the valve connecting structure. And / or, the inner wall of the second connecting part is recessed radially along the valve connecting structure to form a second limiting groove. The second limiting groove extends along the extension direction of the inner wall of the second connecting part and communicates with the outside at one end facing the first connecting part. The second assembly section is inserted into the second limiting groove and abuts against the groove wall of the second limiting groove along the axial direction of the valve connecting structure.

[0018] In one embodiment, the inner diameter of one of the first connecting portion and the second connecting portion is larger than that of the other.

[0019] The valve connection structure further includes a flow-guiding part connected to the isolation part; the flow-guiding part passes through the isolation part and is disposed in the larger inner diameter of the first connection part and the second connection part, and is attached to the inner wall of the larger inner diameter part;

[0020] Along the axis of the valve connection structure, from the isolation portion toward the larger inner diameter of the first connection portion and the second connection portion, the radial dimension of the drainage portion gradually decreases along the valve connection structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a first embodiment of the valve connection structure provided in this application;

[0023] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 A schematic diagram of the first embodiment of the isolation part and assembly part in the valve connection structure provided in this application;

[0025] Figure 4 A partial enlarged view of a second embodiment of the valve connection structure provided in this application;

[0026] Figure 5 A schematic diagram of a second embodiment of the isolation part and assembly part in the valve connection structure provided in this application;

[0027] Figure 6 A partial enlarged view of a third embodiment of the valve connection structure provided in this application;

[0028] Figure 7 A partial enlarged view of the fourth embodiment of the valve connection structure provided in this application;

[0029] Figure 8 This is a schematic diagram of the isolation section and the drainage section in the valve connection structure provided in this application.

[0030] Reference numerals: 100, valve connection structure; 1001, first limiting groove; 1002, second limiting groove; 10, valve; 101, valve port; 11, first connecting part; 111, first mating surface; 20, connecting pipe; 201, pipe port; 21, second connecting part; 211, second mating surface; 30, locking element; 401, flow hole; 41, isolation part; 411, third mating surface; 412, fourth mating surface; 42, assembly part; 4201, assembly cavity; 421, first assembly section; 422, second assembly section; 43, drainage part. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when a component is referred to as being "fixed to," "set on," or "properly placed on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0036] Please see Figures 1 to 8 This application provides a valve connection structure 100, which includes a valve 10, a connecting pipe 20, and a locking member 30. The valve 10 includes a first connecting portion 11; the connecting pipe 20 includes a second connecting portion 21, and the first connecting portion 11 and the second connecting portion 21 cooperate with each other. The locking member 30 is sleeved on the outer periphery of the first connecting portion 11 and the second connecting portion 21, and the locking member 30 is connected to at least one of the first connecting portion 11 and the second connecting portion 21 and locks the first connecting portion 11 and the second connecting portion 21, thereby fixing the positions of the first connecting portion 11 and the second connecting portion 21.

[0037] Furthermore, valve 10 is made of a first metal material, and connecting pipe 20 is made of a second metal material. There is a potential difference between the first metal material and the second metal material, and potential difference corrosion will occur after prolonged direct contact. For example, the first metal material is aluminum and the second metal material is copper; or, the first metal material is magnesium and the second metal material is aluminum; or, the first metal material is steel and the second metal material is copper, etc.

[0038] In air conditioning systems, the connecting pipe 20 is typically made of copper, which has excellent thermal conductivity, facilitating rapid heat exchange between the refrigerant and the surrounding air. To reduce costs, the valve 10 is increasingly made of aluminum, which has a potential difference with copper. If the first connecting part 11 and the second connecting part 21 directly contact to form a rigid seal, prolonged use will inevitably lead to corrosion due to the potential difference, causing the rigid seal to fail.

[0039] Therefore, in this application, the valve connection structure 100 further includes an isolation portion 41. Along the axial direction of the connecting pipe 20, the isolation portion 41 abuts between the first connecting portion 11 and the second connecting portion 21, and at least covers one of the first connecting portion 11 and the second connecting portion 21. The isolation portion 41 is pressed between the first connecting portion 11 and the second connecting portion 21 by the locking member 30. The isolation portion 41 has insulation and / or corrosion resistance. The isolation portion 41 is used to separate the first connecting portion 11 and the second connecting portion 21 to avoid direct contact between the two and potential difference corrosion.

[0040] In summary, by providing an isolation part 41 between the valve 10 and the connecting pipe 20 to separate the first connecting part 11 and the second connecting part 21, direct contact is avoided. At the same time, the first connecting part 11 and the second connecting part 21 form a seal with the isolation part 41, ensuring the sealing effect and preventing leakage.

[0041] In a specific embodiment, a seal is formed between the isolation portion 41 and the first connecting portion 11, and a seal is formed between the isolation portion 41 and the second connecting portion 21. Simultaneously, by forming seals between the first connecting portion 11 and the second connecting portion 21 and the isolation portion 41 respectively, a connection seal between the valve 10 and the connecting pipe 20 is achieved.

[0042] In some embodiments, the isolation portion 41 is made of a rigid material, and a rigid seal is formed between the isolation portion 41 and the first connecting portion 11, and a rigid seal is formed between the isolation portion 41 and the second connecting portion 21. The rigid seal is rigid, which can better withstand pressure and also ensure the sealing effect after long-term use.

[0043] In specific embodiments, the isolation part 41 can be made of rigid plastic or corrosion-resistant materials such as stainless steel. Taking stainless steel as an example, a passivation film such as a chromium oxide film can be formed on the surface of stainless steel to improve the overall corrosion resistance of the isolation part 41 and slow down potential difference corrosion.

[0044] In a specific embodiment, the locking member 30 may also be made of stainless steel and a dense passivation film may be formed on its surface to avoid potential difference corrosion and ensure tightness of connection.

[0045] In another embodiment, the isolation portion 41 is made of a flexible material, forming a soft seal between the isolation portion 41 and the first connecting portion 11, and a soft seal between the isolation portion 41 and the second connecting portion 21. The flexible material can absorb minute gap changes caused by vibration to ensure sealing performance. For example, the isolation portion 41 can be made of materials such as rubber.

[0046] In a specific embodiment, the first connecting portion 11 forms the valve port 101 of the valve 10, and the second connecting portion 21 forms the pipe port 201 of the connecting pipe 20. The pipe port 201 and the valve port 101 are connected, thereby realizing the connection between the valve 10 and the connecting pipe 20. The isolation portion 41 is only used to isolate the first connecting portion 11 and the second connecting portion 21, without affecting the connection state between the valve 10 and the connecting pipe 20. Specifically, the isolation portion 41 surrounds and forms a flow hole 401 that is connected to both the pipe port 201 and the valve port 101.

[0047] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in a specific embodiment, along the axial direction of the valve connection structure 100, the first connecting portion 11 has a first mating surface 111 on the side facing the second connecting portion 21, and the second connecting portion 21 has a second mating surface 211 on the side facing the first connecting portion 11. The first mating surface 111 and the second mating surface 211 are respectively set at an angle to the axial direction of the valve connection structure 100. Along the axial direction of the valve connection structure 100, the isolation portion 41 has a third mating surface 411 on the side facing the first connecting portion 11, and the third mating surface 411 is attached to the first mating surface 111 to form a surface seal. The isolation portion 41 has a fourth mating surface 412 on the side facing the second connecting portion 21, and the fourth mating surface 412 is attached to the second mating surface 211 to form a surface seal. In this way, a seal is formed by surface-to-surface mating, which has a large mating area, which is beneficial for distributing stress and improving load-bearing performance.

[0048] In another specific embodiment, along the axial direction of the valve connection structure 100, the first connecting portion 11 has a first mating surface 111 on the side facing the second connecting portion 21. The first mating surface 111 is angled to the axial direction of the valve connection structure 100. The second connecting portion 21 has a protruding first pressing tip. The isolating portion 41 has a third mating surface 411 on the side facing the first connecting portion 11. The third mating surface 411 and the first mating surface 111 are fitted together to form a surface seal, resulting in a large mating area between the isolating portion 41 and the first connecting portion 11, ensuring sealing performance. Furthermore, the isolating portion 41 has a fourth mating surface 412 on the side facing the second connecting portion 21. The fourth mating surface 412 is pressed against the first pressing tip to form a line seal, making the isolating portion 41 and the second connecting portion 21 fit more tightly, thereby ensuring sealing performance.

[0049] In more specific embodiments, along the axial direction of the valve connection structure 100, the first connecting portion 11 has a second crimping tip protruding on the side facing the second connecting portion 21, and the second connecting portion 21 has a second mating surface 211 on the side facing the first connecting portion 11. The second mating surface 211 is angled to the axial direction of the valve connection structure 100. The isolation portion 41 has a third mating surface 411 on the side facing the first connecting portion 11. The third mating surface 411 is crimped with the second crimping tip to form a line seal. A large crimping action is formed between the third mating surface 411 and the second crimping tip, and the two are tightly abutted to ensure sealing. The isolation portion 41 has a fourth mating surface 412 on the side facing the second connecting portion 21. The fourth mating surface 412 is attached to the second mating surface 211 to form a surface seal. The surface seal provides a larger sealing area between the second connecting portion 21 and the isolation portion 41 to ensure sealing.

[0050] In more embodiments, the first connecting part 11 may be provided with a first mating surface 111 and a second pressing tip to mate with the third mating surface 411 of the isolation part 41. That is, the first connecting part 11 and the isolation part 41 simultaneously form a surface seal and a line seal to further enhance the sealing performance.

[0051] In other embodiments, the second connecting portion 21 may also be provided with a second mating surface 211 and a first pressing tip to mate with the fourth mating surface 412 of the isolation portion 41, that is, the second connecting portion 21 and the isolation portion 41 simultaneously form a surface seal and a line seal to further enhance the sealing performance.

[0052] In a specific embodiment, along the axial direction of the valve connection structure 100, the first crimping tip is tapered from the second connection portion 21 toward the isolation portion 41 to ensure a line seal is formed. Similarly, along the axial direction of the valve connection structure 100, the second crimping tip is tapered from the first connection portion 11 toward the isolation portion 41 to ensure a line seal is formed.

[0053] In a further embodiment, the first mating surface 111 and / or the second mating surface 211 are configured as inclined surfaces, that is, the first mating surface 111 and / or the second mating surface 211 are set at an acute angle to the axial direction of the valve connection structure 100. In this way, the pressure received can be further decomposed, increasing the pressure that can be withstood, so as to be suitable for pipelines carrying high-pressure fluids.

[0054] In specific embodiments, such as Figure 2 , Figure 4 , Figure 7 As shown, both the first mating surface 111 and the second mating surface 211 are set as inclined surfaces; or, the first mating surface 111 is set as an inclined surface, and the second mating surface 211 is a straight end face, that is, the second mating surface 211 extends radially along the valve connection structure 100; or, as shown... Figure 6 As shown, the second mating surface 211 is set as an inclined surface, and the first mating surface 111 is a straight end face. The first mating surface 111 extends radially along the valve connection structure 100.

[0055] In specific embodiments, such as Figure 1 As shown, the first connecting portion 11 is arranged horizontally along the axial direction of the valve connecting structure 100, and the second connecting portion 21 is arranged to gradually expand towards the first connecting portion 11 along the axial direction of the valve connecting structure 100. The second connecting portion 21 forms an inclined second mating surface 211. The first connecting portion 11 may form a first mating surface 111 extending radially along the valve connecting structure 100, or it may form an inclined first mating surface 111. In other embodiments, the first connecting portion 11 and the second connecting portion 21 may both be arranged horizontally along the axial direction of the valve connecting structure 100, or one of the first connecting portion 11 and the second connecting portion 21 may gradually narrow towards the other, etc., without specific limitations here.

[0056] like Figures 1 to 8 As shown, in an optional embodiment, the valve connection structure 100 further includes an assembly portion 42 connected to the isolation portion 41. The assembly portion 42 and the isolation portion 41 are jointly assembled to at least one of the first connecting portion 11 and the second connecting portion 21, and the assembly portion 42 and / or the isolation portion 41 form a flow hole 401. Thus, the assembly portion 42 increases the assembly area, enhances the limiting effect, improves assembly stability, and facilitates the installation and positioning of the isolation portion 41, thereby ensuring a sealing effect.

[0057] For example, the assembly part 42 forms a flow hole 401; or, the isolation part 41 forms a flow hole 401; or, the assembly part 42 and the isolation part 41 are jointly arranged to form a flow hole 401.

[0058] For example, such as Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, the assembly part 42 and the isolation part 41 are jointly assembled on the first connecting part 11; or, the assembly part 42 and the isolation part 41 are jointly assembled on the second connecting part 21; or, along the axial direction of the valve connection structure 100, the two sides of the isolation part 41 are respectively connected to the assembly part 42, the isolation part 41 and the assembly part 42 on one side are jointly assembled on the first connecting part 11, and the isolation part 41 and the assembly part 42 on the other side are jointly assembled on the second connecting part 21.

[0059] like Figure 2 and Figure 3 As shown, in one embodiment, the assembly part 42 includes a first assembly section 421, which is connected to the isolation part 41. The first assembly section 421 and the isolation part 41 are together sleeved on one of the first connecting part 11 and the second connecting part 21. Thus, the first assembly section 421 increases the contact area, enhances the radial limiting along the valve connection structure 100, improves the limiting effect and assembly stability, and ensures a sealing effect.

[0060] like Figure 2 As shown, in a specific embodiment, the first assembly section 421 and the isolation section 41 are together sleeved on the first connecting section 11. The first assembly section 421 extends along the extension direction of the first connecting section 11 and is attached to the first connecting section 11. The first assembly section 421 enhances the radial limitation of the first connecting section 11 along the valve connection structure 100 and helps to improve the isolation effect.

[0061] In another specific embodiment, the first assembly section 421 and the isolation section 41 are together sleeved on the second connecting section 21. The first assembly section 421 extends along the extension direction of the second connecting section 21 and is attached to the second connecting section 21. The first assembly section 421 enhances the radial limitation of the second connecting section 21 along the valve connection structure 100 and helps to improve the isolation effect.

[0062] In a specific embodiment, along the radial direction of the valve connection structure 100, the first assembly section 421 is located on the side of the isolation part 41 near the outer wall of the first connection part 11 or the outer wall of the second connection part 21. At this time, the first assembly section 421 is attached to the outer wall of the first connection part 11 or the second connection part 21, which can limit the first connection part 11 or the second connection part 21, and will not interfere with the fluid communication between the valve 10 and the connecting pipe 20.

[0063] In another embodiment, along the radial direction of the valve connection structure 100, the first assembly section 421 is located on the side of the isolation portion 41 near the inner wall of the first connection portion 11 or the inner wall of the second connection portion 21. Thus, the first assembly section 421, attached to the inner wall of the first connection portion 11 or the inner wall of the second connection portion 21, can limit the movement of the first connection portion 11 or the second connection portion 21 and also reduce the risk of interference with the locking member 30.

[0064] In a specific embodiment, the first connecting portion 11 or the second connecting portion 21 is provided with a first limiting groove 1001. The first assembly segment 421 is inserted into the first limiting groove 1001. Along the axial direction of the valve connection structure 100, the first assembly segment 421 abuts against the groove wall of the first limiting groove 1001 to axially limit the first assembly segment 421, which facilitates rapid assembly and positioning and improves assembly stability. At the same time, the first limiting groove 1001 accommodates the first assembly segment 421 and also prevents the first assembly segment 421 from protruding from the surface of the first connecting portion 11, reducing interference and improving aesthetics.

[0065] like Figure 2 As shown, in a first specific embodiment, the outer wall of the first connecting portion 11 is recessed radially along the valve connection structure 100 to form a first limiting groove 1001. The first limiting groove 1001 extends along the extending direction of the outer wall of the first connecting portion 11 and communicates with the outside at one end facing the second connecting portion 21. The first limiting groove 1001 is formed by the outer wall of the first connecting portion 11 to accommodate the first assembly section 421 and reduce the interference of the first assembly section 421 with the locking member 30.

[0066] In a second specific embodiment, a first limiting groove 1001 is formed by a radial recess in the inner wall of the first connecting portion 11 along the valve connecting structure 100. The first limiting groove 1001 extends along the extending direction of the inner wall of the first connecting portion 11 and communicates with the outside at one end facing the second connecting portion 21. Specifically, it extends along the extending direction of the inner wall of the first connecting portion 11 and communicates with the valve port 101. The first assembly section 421 passes through the valve port 101 and is inserted into the first limiting groove 1001. The first limiting groove 1001 is formed by the inner wall of the first connecting portion 11 to accommodate the first assembly section 421, thereby reducing interference with the fluid flow inside the valve 10.

[0067] In a third specific embodiment, the outer wall of the second connecting portion 21 is recessed radially along the valve connection structure 100 to form a first limiting groove 1001. The first limiting groove 1001 extends along the extending direction of the outer wall of the second connecting portion 21 and communicates with the outside at one end facing the first connecting portion 11. The first limiting groove 1001 is formed by the outer wall of the second connecting portion 21 to accommodate the first assembly section 421 and reduce the interference of the first assembly section 421 with the locking member 30.

[0068] In a fourth specific embodiment, the inner wall of the second connecting portion 21 is recessed radially along the valve connection structure 100 to form a first limiting groove 1001. The first limiting groove 1001 extends along the extending direction of the inner wall of the second connecting portion 21 and communicates with the outside at one end facing the first connecting portion 11. Specifically, it extends along the extending direction of the inner wall of the second connecting portion 21 and communicates with the pipe opening 201. The first assembly section 421 passes through the pipe opening 201 and is inserted into the first limiting groove 1001. The first limiting groove 1001 is formed by the inner wall of the second connecting portion 21 to accommodate the first assembly section 421, thereby reducing interference with the fluid flow in the connecting pipe 20.

[0069] like Figures 4 to 6 As shown, in another embodiment, the assembly part 42 is configured with an assembly cavity 4201. One of the first connecting part 11 and the second connecting part 21 is inserted into the assembly cavity 4201 and needs to be attached to the cavity wall of the assembly cavity 4201 to further increase the limiting area and enhance the installation reliability. At the same time, it can also enhance the isolation effect, completely isolating one of the first connecting part 11 and the second connecting part 21 within the assembly cavity 4201, ensuring the sealing effect of the isolation part 41.

[0070] In a specific embodiment, the assembly part 42 includes a first assembly section 421 and a second assembly section 422. The isolation part 41 is connected to the first assembly section 421 on the side near the outer wall of the first connecting part 11. Along the radial direction of the valve connection structure 100, the first assembly section 421 and the second assembly section 422 are respectively disposed on both sides of the isolation part 41 and are arranged in the same direction. The first assembly section 421, the second assembly section 422, and the isolation part 41 together form an assembly cavity 4201. Thus, the first assembly section 421 and the second assembly section 422 have a limiting effect on the first connecting part 11 or the second connecting part 21 along the radial direction of the valve connection structure 100. The first connecting part 11 or the second connecting part 21 is inserted into the assembly cavity 4201 and abuts against the isolation part 41. The isolation part 41 has a limiting effect on the first connecting part 11 or the second connecting part 21 along the axial direction of the valve connection structure 100. The arrangement of the first assembly section 421 and the second assembly section 422 can enhance the isolation effect between the first connecting part 11 and the second connecting part 21, which is conducive to further ensuring the sealing performance.

[0071] like Figures 4 to 6As shown, in an optional embodiment, the first connecting portion 11 is inserted into the assembly cavity 4201. Along the radial direction of the valve connection structure 100, the isolation portion 41 is connected to the first assembly section 421 near the outer wall of the first connecting portion 11. The first assembly section 421 extends along the extending direction of the first connecting portion 11 and is attached to the outer wall of the first connecting portion 11. The isolation portion 41 is connected to the second assembly section 422 near the inner wall of the first connecting portion 11. The second assembly section 422 extends along the extending direction of the first connecting portion 11 and is attached to the inner wall of the first connecting portion 11. Thus, the first assembly section 421 and the second assembly section 422 can provide a radial limiting effect on the first connecting portion 11 along the valve connection structure 100.

[0072] like Figure 4 and Figure 6 As shown, in a specific embodiment, the outer wall of the first connecting portion 11 is recessed along the radial direction of the valve connecting structure 100 to form a first limiting groove 1001. The first limiting groove 1001 extends along the extending direction of the outer wall of the first connecting portion 11 and communicates with the outside at one end facing the second connecting portion 21. The first assembly section 421 is inserted into the first limiting groove 1001. Along the axial direction of the valve connecting structure 100, the first assembly section 421 abuts against the groove wall of the first limiting groove 1001. The first limiting groove 1001 can accommodate the first assembly section 421 to reduce the interference of the first assembly section 421 with the locking member 30.

[0073] like Figure 4 and Figure 6 As shown, in another specific embodiment, the inner wall of the first connecting part 11 is recessed along the radial direction of the valve connecting structure 100 to form a second limiting groove 1002. The second limiting groove 1002 extends along the extending direction of the inner wall of the first connecting part 11 and communicates with the outside at one end facing the second connecting part 21. The second assembly section 422 passes through the valve port 101 and is inserted into the second limiting groove 1002. Along the axial direction of the valve connecting structure 100, the second assembly section 422 abuts against the groove wall of the second limiting groove 1002. The second limiting groove 1002 can accommodate the second assembly section 422 to reduce the interference of the second assembly section 422 on the fluid flow in the valve 10.

[0074] In another optional embodiment, the second connecting portion 21 is inserted into the assembly cavity 4201. Along the radial direction of the valve connection structure 100, the isolation portion 41 is connected to the first assembly section 421 near the outer wall of the second connecting portion 21. The first assembly section 421 extends along the extension direction of the second connecting portion 21 and is attached to the outer wall of the second connecting portion 21. The isolation portion 41 is connected to the second assembly section 422 near the inner wall of the second connecting portion 21. The second assembly section 422 extends along the extension direction of the second connecting portion 21 and is attached to the inner wall of the second connecting portion 21. Thus, the first assembly section 421 and the second assembly section 422 can provide a radial limiting effect on the second connecting portion 21 along the valve connection structure 100.

[0075] In one specific embodiment, the outer wall of the second connecting portion 21 is recessed along the radial direction of the valve connecting structure 100 to form a first limiting groove 1001. The first limiting groove 1001 extends along the extending direction of the outer wall of the second connecting portion 21 and communicates with the outside at one end facing the first connecting portion 11. The first assembly section 421 is inserted into the first limiting groove 1001. Along the axial direction of the valve connecting structure 100, the first assembly section 421 abuts against the groove wall of the first limiting groove 1001. The first limiting groove 1001 can accommodate the first assembly section 421 to reduce the interference of the first assembly section 421 on the locking member 30.

[0076] In another specific embodiment, the inner wall of the second connecting portion 21 is recessed along the radial direction of the valve connecting structure 100 to form a second limiting groove 1002. The second limiting groove 1002 extends along the extending direction of the inner wall of the second connecting portion 21 and communicates with the outside at one end facing the first connecting portion 11. The second assembly section 422 passes through the pipe opening 201 and is inserted into the second limiting groove 1002. Along the axial direction of the valve connecting structure 100, the second assembly section 422 abuts against the groove wall of the second limiting groove 1002. The second limiting groove 1002 can accommodate the second assembly section 422 to reduce the interference of the second assembly section 422 on the fluid flow in the connecting pipe 20.

[0077] like Figure 7 and Figure 8 As shown, in an optional embodiment, the inner diameter of one of the first connecting portion 11 and the second connecting portion 21 is larger than that of the other, and there is a positional misalignment between their inner walls. In this case, the valve connection structure 100 also includes a flow-guiding portion 43 connected to the isolation portion 41; the flow-guiding portion 43 extends from the isolation portion 41 through the larger inner diameter of the first connecting portion 11 and the second connecting portion 21, and is attached to the inner wall of the larger inner diameter. When fluid flows from the larger radial portion to the smaller inner diameter portion, it can flow along the surface of the flow-guiding portion 43, preventing the end face of the smaller inner diameter portion from obstructing the flow. When fluid flows from the smaller inner diameter portion to the larger inner diameter portion, the flow-guiding surface can buffer the fluid, reducing flow oscillations at the junction of the first connecting portion 11 and the second connecting portion 21 caused by the positional misalignment of their inner walls.

[0078] In a specific embodiment, along the axis of the valve connection structure 100, from the isolation part 41 toward the direction of the larger inner diameter of the first connection part 11 and the second connection part 21, the size of the drainage part 43 gradually decreases in the radial direction of the valve connection structure 100 to form an inclined surface, thereby having a drainage function.

[0079] In a specific embodiment, the isolation section 41 and the drainage section 43 are smoothly connected to facilitate the smooth flow of fluid.

[0080] In a specific embodiment, the surface of the drainage section 43 is configured as a curved surface to form a smooth surface that promotes smooth fluid flow and improves the drainage effect.

[0081] In a specific embodiment, the locking member 30 is threadedly connected to one of the first connecting portion 11 and the second connecting portion 21 to achieve locking. For example, the locking member 30 can be a nut.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A valve connection structure, characterized in that, include: The valve (10) includes a first connecting part (11), and the valve (10) is made of a first metal material; The connecting pipe (20) includes a second connecting part (21), the connecting pipe (20) is made of a second metal material, and the first connecting part (11) and the second connecting part (21) cooperate with each other; An isolation section (41) is located along the axial direction of the connecting pipe (20), abutting between the first connecting section (11) and the second connecting section (21), and covering at least one of the first connecting section (11) and the second connecting section (21); A locking member (30) is sleeved on the outer periphery of the first connecting part (11) and the second connecting part (21). Through the locking member (30), the isolation part (41) is pressed between the first connecting part (11) and the second connecting part (21). There is a potential difference between the first metal material and the second metal material, and the isolation part (41) has insulation and / or corrosion resistance.

2. The valve connection structure according to claim 1, characterized in that, Along the axial direction of the valve connection structure, the first connecting part (11) has a first mating surface (111) on the side facing the second connecting part (21), and the second connecting part (21) has a second mating surface (211) on the side facing the first connecting part (11). The first mating surface (111) and the second mating surface (211) are respectively angled to the axial direction of the valve connection structure. Along the axial direction of the valve connection structure, the isolation part (41) has a third mating surface (411) on the side facing the first connecting part (11). The third mating surface (411) is in contact with the first mating surface (111) to form a surface seal. The isolation part (41) has a fourth mating surface (412) on the side facing the second connecting part (21). The fourth mating surface (412) is in contact with the second mating surface (211) to form a surface seal. And / or, Along the axial direction of the valve connection structure, the first connecting part (11) has a first mating surface (111) on the side facing the second connecting part (21). The first mating surface (111) is set at an angle to the axial direction of the valve connection structure. The second connecting part (21) has a protruding first pressing tip. The isolation part (41) has a third mating surface (411) on the side facing the first connecting part (11). The third mating surface (411) is in contact with the first mating surface (111) to form a surface seal. The isolation part (41) has a fourth mating surface (412) on the side facing the second connecting part (21). The fourth mating surface (412) is pressed with the first pressing tip to form a line seal. Alternatively, along the valve connection structure... In the axial direction of the structure, the first connecting part (11) has a second crimping tip protruding on the side facing the second connecting part (21), the second connecting part (21) has a second mating surface (211) on the side facing the first connecting part (11), the second mating surface (211) is set at an angle to the axial direction of the valve connection structure, the isolation part (41) has a third mating surface (411) on the side facing the first connecting part (11), the third mating surface (411) is crimped with the second crimping tip to form a line seal, the isolation part (41) has a fourth mating surface (412) on the side facing the second connecting part (21), the fourth mating surface (412) is attached to the second mating surface (211) to form a surface seal.

3. The valve connection structure according to claim 2, characterized in that, The first mating surface (111) and / or the second mating surface (211) are set as inclined surfaces.

4. The valve connection structure according to claim 1, characterized in that, The valve connection structure further includes an assembly part (42) connected to the isolation part (41), and the assembly part (42) and the isolation part (41) are jointly assembled to one of the first connection part (11) and the second connection part (21).

5. The valve connection structure according to claim 4, characterized in that, The assembly part (42) includes a first assembly section (421) which is connected to the isolation part (41). The first assembly section (421) and the isolation part (41) are together sleeved on the first connecting part (11), and the first assembly section (421) extends along the extension direction of the first connecting part (11) and is attached to the first connecting part (11); or, the first assembly section (421) and the isolation part (41) are together sleeved on the second connecting part (21), and the first assembly section (421) extends along the extension direction of the second connecting part (21) and is attached to the second connecting part (21).

6. The valve connection structure according to claim 5, characterized in that, A first limiting groove (1001) is formed by a radial recess in the outer wall or inner wall of the first connecting part (11) along the valve connecting structure. The first limiting groove (1001) extends along the extension direction of the first connecting part (11) and communicates with the outside at one end toward the second connecting part (21); or, a first limiting groove (1001) is formed by a radial recess in the outer wall or inner wall of the second connecting part (21) along the valve connecting structure. The first limiting groove (1001) extends along the extension direction of the second connecting part (21) and communicates with the outside at one end toward the first connecting part (11). The first assembly section (421) is inserted into the first limiting groove (1001), and along the axial direction of the valve connection structure, the first assembly section (421) abuts against the groove wall of the first limiting groove (1001).

7. The valve connection structure according to claim 4, characterized in that, The assembly part (42) is configured with an assembly cavity (4201), and one of the first connecting part (11) and the second connecting part (21) is inserted into the assembly cavity (4201).

8. The valve connection structure according to claim 7, characterized in that, The assembly part (42) includes a first assembly section (421) and a second assembly section (422). Along the radial direction of the valve connection structure, the first assembly section (421) and the second assembly section (422) are respectively disposed on both sides of the isolation part (41) and are arranged in the same direction. The first assembly section (421), the second assembly section (422) and the isolation part (41) together form an assembly cavity (4201). The first connecting part (11) is inserted into the assembly cavity (4201). Along the radial direction of the valve connection structure, the isolation part (41) is connected to the first assembly section (421) on the side near the outer wall of the first connecting part (11). The first assembly section (421) extends along the extension direction of the first connecting part (11) and is attached to the outer wall of the first connecting part (11). The isolation part (41) is connected to the second assembly section (422) on the side near the inner wall of the first connecting part (11). The second assembly section (422) extends along the extension direction of the first connecting part (11) and is attached to the inner wall of the first connecting part (11); or The second connecting part (21) is inserted into the assembly cavity (4201). Along the radial direction of the valve connection structure, the isolation part (41) is connected to the first assembly section (421) on the side near the outer wall of the second connecting part (21). The first assembly section (421) extends along the extension direction of the second connecting part (21) and is attached to the outer wall of the second connecting part (21). The isolation part (41) is connected to the second assembly section (422) on the side near the inner wall of the second connecting part (21). The second assembly section (422) extends along the extension direction of the second connecting part (21) and is attached to the inner wall of the second connecting part (21).

9. The valve connection structure according to claim 8, characterized in that, The outer wall of the first connecting part (11) is recessed radially along the valve connecting structure to form a first limiting groove (1001). The first limiting groove (1001) extends along the extending direction of the outer wall of the first connecting part (11) and communicates with the outside at one end toward the second connecting part (21). The first assembly section (421) is inserted into the first limiting groove (1001), and along the axial direction of the valve connecting structure, the first assembly section (421) abuts against the groove wall of the first limiting groove (1001); and / or The inner wall of the first connecting part (11) is recessed radially along the valve connecting structure to form a second limiting groove (1002). The second limiting groove (1002) extends along the extending direction of the inner wall of the first connecting part (11) and communicates with the outside at one end facing the second connecting part (21). The second assembly section (422) is inserted into the second limiting groove (1002). Along the axial direction of the valve connecting structure, the second assembly section (422) abuts against the groove wall of the second limiting groove (1002). Alternatively, The outer wall of the second connecting part (21) is recessed radially along the valve connecting structure to form a first limiting groove (1001). The first limiting groove (1001) extends along the extending direction of the outer wall of the second connecting part (21) and communicates with the outside at one end toward the first connecting part (11). The first assembly section (421) is inserted into the first limiting groove (1001), and along the axial direction of the valve connecting structure, the first assembly section (421) abuts against the groove wall of the first limiting groove (1001). Alternatively, the inner wall of the second connecting part (21) is recessed along the radial direction of the valve connecting structure to form a second limiting groove (1002). The second limiting groove (1002) extends along the extending direction of the inner wall of the second connecting part (21) and communicates with the outside at one end toward the first connecting part (11). The second assembly section (422) is inserted into the second limiting groove (1002). Along the axial direction of the valve connecting structure, the second assembly section (422) abuts against the groove wall of the second limiting groove (1002).

10. The valve connection structure according to any one of claims 1 to 9, characterized in that, The inner diameter of one of the first connecting portion (11) and the second connecting portion (21) is larger than that of the other; The valve connection structure also includes a drain section (43) connected to the isolation section (41); the drain section (43) passes through the isolation section (41) and is inserted into the larger inner diameter of the first connection section (11) and the second connection section (21), and is attached to the inner wall of the larger inner diameter section; Along the axis of the valve connection structure, from the isolation part (41) toward the one with the larger inner diameter of the first connection part (11) and the second connection part (21), the size of the drainage part (43) gradually decreases in the radial direction of the valve connection structure.

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