Pipeline connecting assembly, valve device and assembling method of valve device

Abstract

The invention discloses a pipeline connecting assembly, a valve device and an assembling method of the pipeline connecting assembly, the pipeline connecting assembly is used for connecting a first component and a second component, and the pipeline connecting assembly comprises an assembly module and a valve assembly, the assembly module comprises a first connecting component and a connecting cap, the first connecting component is provided with a threaded hole section, and the connecting cap comprises a cover plate part; the second connecting component is arranged in the assembly module and comprises a sliding sleeve, a clamping piece and a sealing piece, the sliding sleeve is located in the assembly module, the second component is partially arranged in the sliding sleeve, and the clamping piece can clamp the second component; when the threaded hole section and the first component are tightened, the sealing piece has a first compressed state, the sealing piece is in sealing fit with the second component and the sliding sleeve, one side of the sealing piece directly or indirectly abuts against the clamping piece, and the other side of the sealing piece directly or indirectly abuts against the cover plate part; when the threaded hole section and the first component are not tightened, the sealing piece has a free state or a second compressed state, and the compression amount of the first compressed state is larger than that of the second compressed state.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration control, and in particular to a pipeline connection component, a valve device and an assembly method thereof. Background Art

[0002] Valve components such as stop valves are usually connected via a connecting assembly and a connecting pipe, and a sealing member is provided in the connecting assembly to achieve a sealed assembly between the connecting pipe and the connecting assembly. However, in the related art, the compression amount of the sealing member is fixed, which makes the insertion of the connecting pipe very difficult.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects is still a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide a pipeline connection assembly, a valve device and an assembly method thereof, wherein the compression amount of the seal in the connection assembly is adjustable, so as to take into account both the convenience and reliability of installation.

[0005] In order to solve the above technical problems, the present invention provides a pipeline connection assembly.

[0006] Used to achieve connection between a first component and a second component, comprising: an assembly module, comprising a first connecting component and a connecting cap, the first connecting component being provided with a threaded hole section, and the connecting cap comprising a cover plate portion;

[0007] A second connecting component disposed in the component module comprises a sliding sleeve, a clamping member and a sealing member, wherein the sliding sleeve is disposed in the component module, the second component is partially embedded in the sliding sleeve, and the clamping member can elastically deform and clamp the second component;

[0008] When the threaded hole section and the first component are tightened, the seal is in a first compressed state, the seal is in sealing cooperation with the second component, the seal is in sealing cooperation with the sliding sleeve, one side of the seal is in direct or indirect contact with the clamping member, and the other side of the seal is in direct or indirect contact with the cover plate portion;

[0009] When the threaded hole section and the first component are not tightened, the seal has a free state or a second compressed state, wherein the compression amount of the first compressed state is greater than the compression amount of the second compressed state.

[0010] The present invention also provides a valve device, including a valve component, a connecting pipe and a pipeline connection assembly, wherein the valve component has a joint, a first connecting component and the joint are threadedly connected, the connecting pipe is inserted into the second connecting component, and the joint and the sliding sleeve are hard-sealed.

[0011] The present invention also provides an assembly method of a valve device, the assembly method comprising the following steps:

[0012] Configure the valve components, pipeline connection components and pipe connections;

[0013] inserting the connecting pipe into the second connecting component;

[0014] The first connecting component is installed on the joint. Through the threaded cooperation of the first connecting component and the joint, the component module is displaced axially relative to the sleeve, and the threaded cooperation size of the joint and the first connecting component is continuously increased until the threaded hole section and the joint are tightened, so that the joint and the second connecting component are hard-sealed, and the cover plate portion directly or indirectly presses the seal, and the seal undergoes elastic deformation to seal between the connecting pipe and the sleeve.

[0015] The present invention provides a pipeline connection component, a valve device and an assembly method thereof. Through the tightening effect of the threaded hole section and the threaded cooperation of the first component, the compression amount of the seal after tightening is greater than the compression amount when not tightened, the seal undergoes elastic deformation, the seal and the second component are sealed together, the seal and the sliding sleeve are sealed together, and one side of the seal is directly or indirectly against the clamping member, and the other side of the seal is directly or indirectly against the cover plate portion. After the connecting pipe is inserted into the second connecting component and before the thread is tightened, the installation of the connecting pipe can be facilitated. After the connecting pipe is installed, the compression amount of the seal is relatively adjustable by the threaded cooperation of the threaded hole section and the first component, and the convenience and reliability of installation can be taken into account. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an embodiment of a valve device provided by the present invention during initial assembly;

[0017] Figure 2 for Figure 1 A partial enlarged view of the connection between the middle pipe connection assembly and the joint and the second component;

[0018] Figure 3 is a schematic structural diagram of a first connecting component;

[0019] Figure 4 is a schematic diagram of the structure of the sliding sleeve;

[0020] Figure 5 It is a partial enlarged view of the connection between the pipeline connection assembly, the joint and the second component of the valve device after being tightened;

[0021] Figure 6 A partial enlarged view of the connection between the pipeline connection assembly, the joint and the second component during initial assembly of another embodiment of the valve device provided by the present invention;

[0022] Figure 7The present invention is a schematic flow chart of an assembly method of a valve device provided by the present invention.

[0023] The following are the descriptions of the reference numerals:

[0024] 100 pipeline connection assembly, 110 first connection component, 111 first mounting hole, 111a threaded hole section, 111b smooth hole section, 112 second shaft end surface, 113 third shaft end surface, 120 second connection component, 121 sliding sleeve, 121a thin neck, 121b thick neck, 121c first step surface, 121d second mounting hole, 121d-1 limiting portion, 121d-2 second step surface, 121d-3 tapered surface, 121e first shaft end surface, 121f edge, 122 clamping member, 122a flange portion, 122b clamping claw portion, 123a first gasket, 123b sealing member, 123c second gasket, 130 connection cap, 131 annular portion, 132 cover plate portion, 132a protrusion;

[0025] 200 first component, 210 joint;

[0026] 300 second component. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] In the embodiments of the present invention, the terms "first", "second", and "third" 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", "second", and "third" may explicitly or implicitly include one or more of the features.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0030] The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] In the description of the embodiments of the present invention, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0032] Please refer to Figure 1-Figure 6 , Figure 1 This is a schematic structural diagram of an embodiment of the valve device provided by the present invention during initial assembly. Figure 2 for Figure 1 A partial enlarged view of the connection between the middle pipe connection assembly, the joint and the second component. Figure 3 is a schematic structural diagram of a first connecting component, Figure 4 is the structural diagram of the sliding sleeve. Figure 5 This is a partial enlarged view of the connection between the pipeline connection assembly, the joint and the second component of the valve device after tightening. Figure 6 A partial enlarged view of the connection between the pipeline connection assembly, the joint and the second component during initial assembly of another embodiment of the valve device provided by the present invention.

[0033] like Figure 1-Figure 5 As shown, the present invention provides a pipe connection assembly 100 for realizing the connection between a first component 200 and a second component 300 .

[0034] Here, the embodiment of the present invention does not limit the specific types of the first component 200 and the second component 300, that is, the embodiment of the present invention does not limit the specific application scenario of the pipeline connection assembly 100. In actual operation, those skilled in the art can determine it according to the specific situation. Exemplarily, the above-mentioned pipeline connection assembly 100 can be applied to the connection of a pipe and a valve component. In this scenario, the first component 200 can be a valve component, and the second component 300 can be a pipe; in addition, the above-mentioned pipeline connection assembly 100 can also be applied to the connection of two pipes, etc.

[0035] The pipeline connection assembly 100 comprises an assembly module and a second connection component 120 . The assembly module further comprises a first connection component 110 and a connection cap 130 . The second connection component 120 is built in the assembly module.

[0036] The first connecting component 110 is provided with a first mounting hole 111. The first mounting hole 111 includes a threaded hole section 111a and a light hole section 111b. The threaded hole section 111a and the light hole section 111b can be arranged adjacent to each other; or, a separation structure in the form of an annular protrusion, a step surface, etc. can be provided on the inner wall surface of the first mounting hole 111 to separate the threaded hole section 111a and the light hole section 111b. In this way, the axial dimensions of the threaded hole section 111a and the light hole section 111b can be conveniently controlled. The threaded hole section 111a is used to be connected to the first component 200, specifically, as Figure 1 , Figure 2 and Figure 5 As shown, the first component 200 may be provided with a joint 210, and the joint 210 may be provided with an external thread for connecting with the threaded hole section 111a.

[0037] The second connecting component 120 includes a sliding sleeve 121 , a clamping member 122 and a sealing member 123 b .

[0038] The sliding sleeve 121 is slidably assembled in the light hole section 111b, and the sliding sleeve 121 can be hard-sealed with the first component 200 to achieve sealing between the pipeline connection assembly 100 and the first component 200. The specific form of the hard-sealed cooperation is not limited here. In actual use, those skilled in the art can set it according to actual needs as long as it can meet the requirements of use. For example, Figure 4 As shown, the sleeve 121 has a first axial end face 121e facing away from the cover portion 132, and an annular edge 121f can be formed between the first axial end face 121e and the inner wall surface of the second mounting hole 121d. The edge 121f can specifically be located at the inner edge of the first axial end face 121e. The sleeve 121 can be hard-sealed with the first component 200 through the edge 121f. This sealing method is a line seal, which is simple to process, has high reliability, and has a relatively low risk of leakage. In addition, the sleeve 121 and the cover portion 132 can also be sealed by a surface seal.

[0039] The sleeve 121 is provided with a second mounting hole 121d, and a limiting portion 121d-1 is formed in the second mounting hole 121d, which is used to limit the installation depth of the second component 300 in the second mounting hole 121d; it should be understood that the limiting portion 121d-1 also limits the installation position of the second component 300 in the pipeline connection assembly 100. The structural form of the limiting portion 121d-1 is not limited here, as long as it can meet the requirements of use. For example, Figure 4As shown, the limiting portion 121d-1 can be an annular boss arranged on the inner wall surface of the second mounting hole 121d; in addition, the second mounting hole 121d can also be set with a variable diameter to form a limiting step surface on the inner wall of the second mounting hole 121d, and then axial limitation is performed through the limiting step surface and the second component 300.

[0040] The clamping member 122 is located in the second mounting hole 121d, and is used to clamp the second component 300 to achieve the connection between the pipe connection assembly 100 and the second component 300. The sealing member 123b is at least partially located in the second mounting hole 121d, and is used to achieve the sealing between the second component 300 and the second mounting hole 121d, so as to achieve the sealing between the pipe connection assembly 100 and the second component 300, thereby ensuring the sealing performance at the joint between the first component 200 and the second component 300. In addition, the sealing member 123b is also used to axially compress the clamping member 122 to achieve the positioning and assembly of the clamping member 122 in the sliding sleeve 121.

[0041] The connecting cap 130 includes an annular portion 131 and a cover portion 132. The annular portion 131 is sheathed on the sleeve 121, and the annular portion 131 is connected to the first connecting member 110. The cover portion 132 and the sealing member 123b are directly or indirectly in contact with each other in the axial direction to limit the axial position of the second connecting member 120, so that the second connecting member 120 can be enclosed between the first connecting member 110 and the connecting cap 130. Figure 1 When the sleeve 121 and the first connecting component 110 are axially opposed, a sliding gap X may be provided between the sleeve 121 and the cover plate portion 132. At this time, the seal 123b is in a free state or a second compressed state, and the overall compression amount in the second compressed state is relatively small.

[0042] During the specific assembly, the second component 300 can be first inserted into the second connecting component 120. Due to the existence of the above-mentioned sliding gap X, the compression amount of the seal 123b is relatively small, and the plug-in assembly of the second component 300 can be relatively easy. After the second component 300 is installed, the first component 200 can be installed. By adjusting the thread matching dimensions of the first component 200 and the first connecting component 110, the first component 200 and the sliding sleeve 121 can be abutted along the axial direction to achieve hard sealing between the first component 200 and the sliding sleeve 121. Then, the thread matching size between the first component 200 and the first connecting component 110 is continuously increased, that is, the sliding sleeve 121 can be driven to move toward the connecting cap 130, so as to continuously advance the first component 200, and the sliding gap X can be reduced, thereby increasing the compression amount of the sealing member 123b, until the first component 200 is tightened, and the sealing member 123b is maintained in the first compressed state, and the compression amount in the first compressed state is greater than that in the second compressed state, thereby improving the sealing performance between the second connecting component 120 and the second component 300. Finally, the above-mentioned sliding gap X can be completely eliminated, so that the sealing member 123b can have the maximum compression amount. This embodiment can refer to Figure 5 It should be understood that the above-mentioned sliding gap X may eventually exist, which needs to be determined in combination with the compression design of the seal 123b.

[0043] Combined with the above analysis, it can be known that the embodiment of the present invention can adjust the compression amount of the seal 123b through the sliding setting between the sleeve 121 and the first connecting component 110. When the second component 300 is installed first, the sleeve 121 can be axially offset against the first connecting component 110, and the compression amount of the seal 123b can be relatively small, which can facilitate the installation of the second component 300; after the second component 300 is installed, by adjusting the thread matching size of the second component 200 and the first connecting component 110, the sleeve 121 can be driven to move, which can increase the compression amount of the seal 123b, thereby improving the sealing performance between the second component 300 and the sleeve 121, so as to ensure the connection reliability between the pipeline connection assembly 100 and the second component 300.

[0044] That is to say, the pipe connection assembly 100 provided in the embodiment of the present invention can take into account both the convenience of installation and the reliability of connection.

[0045] Combination Figure 3 and Figure 4 The sleeve 121 may include a thin neck 121a and a thick neck 121b. The axial projection area of ​​the thin neck 121a may be smaller than the thick neck 121b. Thus, a first step surface 121c may be formed between the thin neck 121a and the thick neck 121b. The first connecting member 110 may have a second axial end surface 112( Figure 3During specific assembly, the narrow neck portion 121a can be slidably assembled in the light hole section 111b, and the first step surface 121c can abut against the second shaft end surface 112 along the axial direction to achieve axial abutment between the sliding sleeve 121 and the first connecting component 110.

[0046] It should be understood that the abutment and limiting structure between the sleeve 121 and the first connecting member 110 is not limited to the above description, and other structural forms may be adopted as long as they can meet the use requirements. For example, a limiting structure in the form of a limiting surface or a limiting boss may be provided on the inner wall surface of the first mounting hole 111, and the sleeve 121 may have a first axial end surface 121e ( Figure 4 The left end face in the middle), the sleeve 121 can be axially offset by the first shaft end face 121e and the limiting structure in the first mounting hole 111, which is also feasible.

[0047] Combination Figure 4 A second step surface 121d-2 may be formed in the second mounting hole 121d, and the clamping member 122 may include a flange portion 122a and a tapered clamping claw portion 122b; the flange portion 122a may be located at the large diameter end of the clamping claw portion 122b, and may be axially abutted against the second step surface 121d-2 to limit the installation position of the clamping member 122 in the second mounting hole 121d; the sealing member 123b is used to press the flange portion 122a, and can press the flange portion 122a against the second step surface 121d-2 to achieve fixed assembly of the clamping member 122.

[0048] The specific structural forms of the flange portion 122a and the clamping claw portion 122b can refer to the relevant technology and are not limited here.

[0049] The inner wall surface of the second mounting hole 121d may also be provided with a tapered surface 121d-3, which may be connected to the second step surface 121d-2. The taper of the tapered surface 121d-3 may be greater than the clamping claw portion 122b; such a configuration can, on the one hand, accommodate the installation of the clamping claw portion 122b, and on the other hand, avoid deformation of the clamping claw portion 122b during the insertion and installation of the second component 300.

[0050] Still Figure 2 As shown, a first gasket 123a may also be provided on the side of the seal 123b facing the clamp 122. The first gasket 123a may be a plate-shaped element made of metal, plastic or the like. The first gasket 123a may be in contact with the flange 122a to improve the reliability of positioning the clamp 122. The seal 123b may be a rubber ring or the like, which may be deformed under pressure, thereby improving the reliability of the seal. In this embodiment, the seal 123b may indirectly press the clamp 122 through the first gasket 123a.

[0051] The cover plate portion 132 may directly contact the sealing member 123 b .

[0052] Alternatively, a second gasket 123c may be provided on the side of the sealing member 123b extending toward the cover portion 132. The second gasket 123c may also be a plate-shaped element made of metal, plastic or other materials. The cover portion 132 may indirectly press the sealing member 123b through the second gasket 123c.

[0053] In some optional embodiments, such as Figure 6 As shown, the cover plate portion 132 may also be provided with a protrusion 132a facing the sealing member 123b, and the cover plate portion 132 may specifically be in axial contact with the sealing member 123b through the protrusion 132a. In this embodiment, the second gasket 123c may not exist, but may also exist, which may be determined in combination with actual use needs.

[0054] The annular portion 131 and the first connecting member 110 may be fixed by welding. In this way, the connection reliability between the connecting cap 130 and the first connecting member 110 can be relatively high, and have a high sealing performance. At the same time, since there is no need to set a thread on the annular portion 131, the thickness of the annular portion 131 can be relatively small, which is also conducive to reducing the weight, structural size and cost of the pipeline connection assembly 100 provided by the present invention.

[0055] Specifically, Figure 3 As shown, the outer wall surface of the first connecting component 110 can have a third axial end face 113, the third axial end face 113 and the second axial end face 112 can be staggered in the axial direction, and the annular portion 131 can abut against the third axial end face 113 and then can be welded to the third axial end face 113.

[0056] It should be understood that, in addition to the welding solution, other connection methods may be used between the annular portion 131 and the first connecting member 110, such as threaded connection, clamping, screw connection, riveting, etc., as long as they can meet the requirements of use.

[0057] The present invention also provides a valve device, comprising a valve component, a connecting pipe and the above-mentioned pipeline connection assembly 100. The valve component has a joint 210. The first connecting component 110 of the pipeline connection assembly 100 is threadedly connected to the joint 210, and the connecting pipe is inserted into the second connecting component 120 and abuts against the limiting portion 121d-1 to achieve the connection between the connecting pipe and the valve component.

[0058] Please refer to Figure 7 , Figure 7 The present invention is a schematic flow chart of an assembly method of a valve device provided by the present invention.

[0059] The present invention also provides a method for assembling a valve device, which is applicable to the above-mentioned valve device. Figure 7 As shown, the assembly method includes the following steps S1 to S3.

[0060] Step S1, configuring valve components, pipeline connection components 100 and connecting pipes.

[0061] Step S2, inserting the connecting pipe into the second connecting component 120.

[0062] Step S3, screw the first connecting component 110 onto the joint 210, and through the threaded cooperation of the first connecting component 110 and the joint 210, the component module is displaced axially relative to the sleeve 121, and the threaded cooperation size of the joint 210 and the first connecting component 110 is continuously increased until the threaded hole section and the joint 210 are tightened, so that the joint 210 and the second connecting component 120 form a hard seal, and the cover plate portion 132 directly or indirectly presses the seal 123b, and the seal 123b undergoes elastic deformation and seals against the connecting pipe and the sleeve 121.

[0063] During the tightening process of the joint 210 and the threaded hole section 111a, the compression amount of the sealing member 123b can change, so that both the sealing of the final product and the smooth insertion of the connecting pipe can be ensured.

[0064] The specific installation end point may be that the sliding sleeve 121 and the cover portion 132 abut against each other along the axial direction, or that the second connecting component 120 moves toward the cover portion 132 by a set dimension, which is not limited here.

[0065] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pipe connection assembly, used to achieve connection between a first component (200) and a second component (300), characterized in that: include: An assembly module comprises a first connecting component (110) and a connecting cap (130), wherein the first connecting component (110) is provided with a threaded hole section (111a), and the connecting cap (130) comprises a cover plate portion (132); a second connecting component (120) disposed in the component module, comprising a sliding sleeve (121), a clamping member (122) and a sealing member (123b); the sliding sleeve (121) is located in the component module, the second component (300) is partially built into the sliding sleeve (121), and the clamping member (122) is capable of elastic deformation to clamp the second component (300); When the threaded hole section (111a) and the first component (200) are tightened, the seal (123b) is in a first compressed state, the seal (123b) is in sealing cooperation with the second component (300), the seal (123b) is in sealing cooperation with the sliding sleeve (121), and one side of the seal (123b) is directly or indirectly against the clamping member (122), and the other side of the seal (123b) is directly or indirectly against the cover plate portion (132); When the threaded hole section (111a) and the first component (200) are not tightened, the seal (123b) has a free state or a second compressed state, wherein the compression amount of the first compressed state is greater than the compression amount of the second compressed state.

2. The pipe connection assembly according to claim 1, characterized in that: The sliding sleeve (121) comprises a thin neck portion (121a) and a thick neck portion (121b), a first step surface (121c) is formed between the thin neck portion (121a) and the thick neck portion (121b), the thin neck portion (121a) is slidably assembled on the first connecting component (110), and the first step surface (121c) can abut against the first connecting component (110) along the axial direction.

3. The pipe connection assembly according to claim 1, characterized in that: A second step surface (121d-2) is formed in the sliding sleeve (121), and the clamping member (122) comprises a flange portion (122a) and a conical clamping claw portion (122b), wherein the flange portion (122a) is located at the large diameter end of the clamping claw portion (122b), and the flange portion (122a) can abut against the second step surface (121d-2).

4. The pipe connection assembly according to claim 1, characterized in that: It also includes a first gasket (123a), one side of the first gasket (123a) abuts against the clamping member (122), and the other side of the first gasket (123a) abuts against the sealing member (123b).

5. The pipe connection assembly according to claim 4, characterized in that: It also includes a second gasket (123c), which is located on the side of the sealing member (123b) away from the first gasket (123a), one side of the second gasket (123c) abuts against the sealing member (123b), and the other side abuts against the cover plate portion (132).

6. The pipe connection assembly according to any one of claims 1 to 5, characterized in that: The cover plate portion (132) is integrally provided with a protrusion (132a) facing the sealing member (123b), and the protrusion (132a) and the sealing member (123b) are directly or indirectly abutted against each other in the axial direction.

7. The pipeline connection assembly according to any one of claims 1 to 5, characterized in that: The sliding sleeve (121) has a first axial end surface (121e) facing away from the cover plate portion (132), the inner edge of the first axial end surface (121e) forms an annular edge (121f), and the sliding sleeve (121) is hard-sealed with the first component (200) via the edge (121f).

8. The pipeline connection assembly according to any one of claims 1 to 5, characterized in that: The connecting cap (13) further comprises an annular portion (131), wherein the annular portion (131) is externally mounted on the sliding sleeve (121), and the annular portion (131) and the first connecting component (110) are welded together.

9. A valve device, characterized in that: The invention comprises a valve component, a connecting pipe and a pipeline connection assembly (100), wherein the valve component has a joint (210), and the pipeline connection assembly (100) is the pipeline connection assembly according to any one of claims 1 to 8, wherein the first connection component (110) and the joint (210) are threadedly connected, the connecting pipe is inserted into the second connection component (120), and the joint (210) and the sleeve (121) are hard-sealed.

10. A method for assembling a valve device, characterized in that: Applicable to the valve device of claim 9, the assembly method comprises the following steps: Configuring the valve component, the pipeline connection assembly (100) and the connecting pipe; Inserting the connecting pipe into the second connecting component (120); The first connecting component (110) is screwed onto the joint (210). Through the threaded fit of the first connecting component (110) and the joint (210), the component module is displaced axially relative to the sleeve (121), and the threaded fit dimensions of the joint (210) and the first connecting component (110) are continuously increased until the threaded hole section (111a) and the joint (210) are tightened, so that the joint (210) and the second connecting component (120) are hard-sealed, and the cover plate portion (132) is directly or indirectly pressed against the seal (123b), and the seal (123b) is elastically deformed to seal against the connecting pipe and the sleeve (121).

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