A valve and pipeline sealing structure

Abstract

This application relates to a valve and pipeline sealing structure, belonging to the field of fluid transport equipment. It includes a valve body, a pipeline, a connecting pipe integrally formed at the port of the valve body, a first sealing ring sleeved on the connecting pipe, and fasteners sleeved on the pipeline. The outer diameter of the connecting pipe is adapted to the inner diameter of the pipeline. When the fasteners are tightened, the pipeline radially presses against the connecting pipe. This application achieves a sealed connection by using fasteners to drive the pipeline to radially press against the connecting pipe, with the first sealing ring tightly squeezed between the connecting pipe and the pipeline. Assembly and disassembly can be completed simply by tightening and loosening the fasteners, avoiding wear problems caused by threaded engagement, and balancing convenience with long-term sealing performance.

Description

Technical Field

[0001] This application relates to the field of fluid transport equipment, and in particular to a valve pipeline sealing structure. Background Technology

[0002] Valve and pipeline sealing technology is a critical component of fluid transport systems, directly impacting the system's safety and efficiency.

[0003] In related technologies, valve and pipeline sealing is usually achieved through flange connections or threaded connections: flange connections achieve sealing by bolting the flange, which has the advantage of strong pressure resistance, but the disadvantage is that all bolts need to be loosened during disassembly, making the operation cumbersome; threaded connections achieve sealing by the engagement of internal and external threads, which has the advantage of simple structure, but the disadvantage is that the threads are prone to wear after repeated disassembly, leading to sealing failure.

[0004] Regarding the aforementioned technologies, the inventors believe that these technologies cannot simultaneously achieve convenient disassembly and long-term sealing performance. Frequent disassembly can lead to wear of the sealing material or loosening of the connecting parts, thereby affecting the sealing effect. There is still room for improvement. Utility Model Content

[0005] To address the problem that valve and pipeline sealing structures struggle to balance easy disassembly with long-term sealing performance, and that frequent disassembly can lead to wear of sealing materials or loosening of connectors, thereby affecting the sealing effect, this application provides a valve and pipeline sealing structure.

[0006] The valve and pipeline sealing structure provided in this application adopts the following technical solution: A valve pipeline sealing structure includes a valve body, a pipeline, a connecting pipe integrally disposed at the pipe opening of the valve body, a first sealing ring sleeved on the connecting pipe, and a fastener sleeved on the pipeline. The outer diameter of the connecting pipe is adapted to the inner diameter of the pipeline. When the fastener is tightened, the pipeline radially presses against the connecting pipe.

[0007] By adopting the above technical solution, when the fastener is tightened, the pipe is radially pressed against the connecting pipe, so that the first sealing ring is tightly squeezed between the connecting pipe and the pipe, achieving a reliable seal. There is no need to disassemble multiple bolts; assembly and disassembly can be completed simply by tightening and loosening the fastener, making the operation convenient. At the same time, it avoids the wear problem caused by thread engagement, and can still maintain good sealing performance after multiple disassemblies, thus balancing convenience and long-term sealing performance.

[0008] Optionally, a positioning groove is provided on the outer peripheral sidewall of the connecting pipe, and the first sealing ring is embedded in the positioning groove.

[0009] By adopting the above technical solution, the positioning groove can limit the first sealing ring, reduce the probability of it shifting or falling off during installation, use or disassembly, and ensure that the first sealing ring is always in the best sealing position, thereby ensuring the stability of the sealing effect.

[0010] Optionally, the diameter of the connecting pipe gradually decreases from the side closer to the valve body to the side farther away from the valve body. The pipe includes a connecting part and a pipe body located at the end of the connecting part away from the valve body. The inner diameter of the connecting part gradually decreases from the side closer to the valve body to the side farther away from the valve body.

[0011] By adopting the above technical solution, the connecting pipe and the connecting part form a conical fit structure. When the fastener is tightened, the conical structure of the connecting pipe provides outward support force, forcing the inner wall of the connecting part to form a tighter fit with the outer circumference of the connecting pipe, further enhancing the pressure transmission effect of the sealing surface and reducing the possibility of gaps. On the other hand, the conical structure has a certain guiding effect, which facilitates the installation and alignment of the connecting pipe and the pipeline.

[0012] Optionally, the pipeline further includes a guide portion connecting the connecting portion and the pipeline body, wherein the inner diameter of the guide portion gradually increases from the side closer to the valve body to the side farther away from the valve body.

[0013] By adopting the above technical solution, the gradually expanding structure of the guide section transitions the fluid flowing from the main body of the pipe to the connection section, reduces the turbulence and resistance generated by the fluid at the junction of the connection section and the main body of the pipe, reduces pipe vibration caused by fluid impact, and indirectly improves the stability and service life of the sealing structure.

[0014] Optionally, an elastic compensation ring is provided on the inner wall of the connecting part.

[0015] By adopting the above technical solution, the elastic compensation ring can use its own elastic properties to compensate for the small gaps or displacements between the connecting pipe and the pipeline caused by factors such as temperature changes and vibration, continuously maintain sealing pressure, effectively alleviate the wear of the sealing components, extend the service life of the sealing structure, and enhance the reliability of long-term sealing.

[0016] Optionally, the valve pipeline sealing structure further includes a first connecting ring fixedly connected to one end of the valve body near the pipeline, a second connecting ring fixedly connected to one end of the pipeline near the valve body, and two locking sleeves simultaneously fitted onto the first connecting ring and the second connecting ring.

[0017] By adopting the above technical solution, the first connecting ring and the second connecting ring are assisted in fixing by the locking sleeve. The fitting structure of the locking sleeve with the first limiting ring and the second limiting ring can provide a stable axial constraint force, further enhancing the overall stability of the valve body and pipeline connection and reducing the risk of loosening of the connection parts.

[0018] Optionally, the two locking sleeves are fixedly connected to a magnetic block at the contact surface.

[0019] By adopting the above technical solution, the magnetic adsorption effect enables the two locking sleeves to be quickly aligned and connected during installation, improving installation efficiency and connection stability.

[0020] Optionally, a second sealing ring is provided on the side of the first connecting ring near the second connecting ring.

[0021] By adopting the above technical solution, the second sealing ring and the first sealing ring form a double sealing structure, adding a sealing barrier on the basis of the sealing of the first sealing ring. Even if the first sealing ring is slightly worn or fails to seal, the second sealing ring can still play a certain sealing role, thus improving the safety and reliability of the sealing structure.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The pipe is driven to press the connecting pipe radially by fasteners. The first sealing ring is tightly squeezed between the connecting pipe and the pipe to achieve a sealed connection. The installation and disassembly can be completed by simply tightening and loosening the fasteners. At the same time, the wear problem caused by thread engagement is avoided, which takes into account both convenience and long-term sealing performance. 2. The positioning groove can limit the first sealing ring, reducing the probability of it shifting or falling off during installation, use or disassembly, ensuring that the first sealing ring is always in the optimal sealing position, thereby ensuring the stability of the sealing effect; 3. The connecting pipe and the connecting part form a tapered fit structure. When the fastener is tightened, the tapered structure of the connecting pipe provides outward support force, forcing the inner wall of the connecting part to form a tighter fit with the outer circumference of the connecting pipe, further enhancing the pressure transmission effect of the sealing surface and reducing the possibility of gaps. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a valve and pipeline sealing structure in an embodiment of this application.

[0024] Figure 2 This is a partial half-section view of a valve and pipeline sealing structure in an embodiment of this application.

[0025] Figure 3 This is an exploded partial view of a valve and pipeline sealing structure in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Pipeline; 21. Connecting part; 211. Elastic compensation ring; 22. Guide part; 23. Pipeline body; 3. Sealing connection assembly; 31. Connecting pipe; 311. Positioning groove; 32. First sealing ring; 33. Fastener; 331. Sleeve ring; 332. Mounting part; 333. Fastening bolt; 4. Locking assembly; 41. First connecting ring; 411. Mounting cavity; 412. Second sealing ring; 42. Second connecting ring; 43. Locking sleeve; 431. Magnetic block. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses a valve pipeline sealing structure.

[0029] Reference Figure 1 The valve and pipeline sealing structure includes a valve body 1, a pipeline 2, a sealing connection assembly 3, and a locking assembly 4. The sealing connection assembly 3 is installed at the connection between the valve body 1 and the pipeline 2 to seal the connection between the valve body 1 and the pipeline 2. The locking assembly 4 is installed at the abutment of the valve body 1 and the pipeline 2 to further lock the sealed connection between the valve body 1 and the pipeline 2.

[0030] Reference Figure 2 The pipe 2 includes a connecting part 21, a guide part 22, and a pipe body 23. The connecting part 21, guide part 22, and pipe body 23 are integrally connected and interconnected, moving sequentially from the side closest to the valve body 1 to the side furthest from the valve body 1. The inner diameter of the connecting part 21 gradually decreases from the side closest to the valve body 1 to the side furthest from the valve body 1. The inner diameter of the guide part 22 gradually increases from the side closest to the valve body 1 to the side furthest from the valve body 1, thus providing a transition between the inner diameters of the connecting part 21 and the pipe body 23.

[0031] Reference Figure 1 and Figure 2 The sealing connection assembly 3 includes a connecting pipe 31, a first sealing ring 32, and a fastener 33. The connecting pipe 31 is integrally connected to the port of the valve body 1, and the diameter of the connecting pipe 31 gradually decreases from the side closer to the valve body 1 to the side farther away from the valve body 1. This ensures that when the connecting pipe 31 is inserted into the connecting part 21, the outer wall of the connecting pipe 31 can fit against the inner wall of the connecting part 21. To improve the sealing performance of the connection structure between the connecting pipe 31 and the connecting part 21, the first sealing ring 32 is sleeved on the connecting pipe 31. The two sides of the first sealing ring 32 are squeezed by the outer wall of the connecting pipe 31 and the inner wall of the connecting part 21, respectively, thereby achieving a sealed connection between the connecting pipe 31 and the connecting part 21. The outer circumferential side wall of the connecting pipe 31 has a positioning groove 311 for the first sealing ring 32 to be embedded, so as to position the first sealing ring 32 and prevent it from shifting during installation, use, or disassembly.

[0032] See Figure 2 In order to further improve the sealing performance of the connection structure between the connecting pipe 31 and the connecting part 21, an elastic compensation ring 211 is arranged on the inner wall of the connecting part 21. The elasticity of the elastic compensation ring 211 is better than that of the first sealing ring 32. The side of the first sealing ring 32 away from the connecting pipe 31 abuts against the elastic compensation ring 211. When the elasticity of the first sealing ring 32 is damaged, the elastic compensation ring 211 can use its own elastic properties to compensate for the small gap between the first sealing ring 32 and the connecting part 21.

[0033] See Figure 2 and Figure 3 The fastener 33 includes a sleeve ring 331, a mounting portion 332, and a fastening bolt 333. The sleeve ring 331 is sleeved on the connecting portion 21 and has an opening on one side. There are two mounting portions 332, which are arranged one-to-one on both sides of the opening of the sleeve ring 331 and are integrally connected with the sleeve ring 331. The fastening bolt 333 passes through the two mounting portions 332, and a nut applies a relative force to the two mounting portions 332, thereby tightening the sleeve ring 331 and achieving radial locking between the connecting pipe 31 and the connecting portion 21.

[0034] See Figure 2 and Figure 3 The locking assembly 4 includes a first connecting ring 41, a second connecting ring 42, and two locking sleeves 43. The first connecting ring 41 is fixedly connected to the end of the valve body 1 near the connecting portion 21. The second connecting ring 42 is fixedly connected to the end of the connecting portion 21 near the valve body 1. The two locking sleeves 43 are respectively fitted onto the outer periphery of the first connecting ring 41 and the second connecting ring 42. The first connecting ring 41 and the second connecting ring 42 are embedded in the annular cavity formed by the two locking sleeves 43 to achieve axial locking between the connecting portion 21 and the valve body 1. The opposite sides of the first connecting ring 41 and the second connecting ring 42 each have annular grooves. The annular grooves of the first connecting ring 41 and the second connecting ring 42 cooperate to form a mounting cavity 411. A second sealing ring 412 is fixedly connected to the first connecting ring 41 in the mounting cavity 411 to further enhance the sealing between the pipe 2 and the valve body 1.

[0035] See Figure 3 To further enhance the stability of the two locking sleeves 43 fitted onto the first connecting ring 41 and the second connecting ring 42, each locking sleeve 43 is fixedly connected with a magnetic block 431 at the contact surface, and adjacent magnetic blocks 431 are attracted to each other.

[0036] The implementation principle of a valve and pipeline sealing structure according to an embodiment of this application is as follows: the connecting pipe 31 of the valve body 1 is inserted into the connecting part 21 of the pipeline 2, so that the outer wall of the connecting pipe 31 abuts against the inner wall of the connecting part 21; two locking sleeves 43 are sequentially fitted onto the first connecting ring 41 and the second connecting ring 42 to fix the valve body 1 and the pipeline 2 axially; the sleeve ring 331 is tightened by the fastening bolt 333, so that the connecting part 21 presses the connecting pipe 31 radially. When a small gap or displacement occurs between the connecting pipe 31 and the connecting part 21 due to factors such as temperature changes and vibration, the elastic compensation ring 211 uses its own elastic properties to compensate for the lack of elasticity of the first sealing ring 32 and maintain the sealing pressure continuously. When the first sealing ring 32 and the elastic compensation ring 211 are unable to achieve a seal, the second sealing ring 412 can still play a certain sealing role between the first connecting ring 41 and the second connecting ring 42 to prevent fluid leakage.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve and pipeline sealing structure, characterized in that: Includes a valve body (1), a pipe (2), a connecting pipe (31) integrally disposed at the port of the valve body (1), a first sealing ring (32) sleeved on the connecting pipe (31), and a fastener (33) sleeved on the pipe (2). The outer diameter of the connecting pipe (31) is adapted to the inner diameter of the pipe (2). When the fastener (33) is tightened, the pipe (2) presses the connecting pipe (31) radially.

2. The valve and pipeline sealing structure according to claim 1, characterized in that: The connecting pipe (31) has a positioning groove (311) on its outer peripheral sidewall, and the first sealing ring (32) is embedded in the positioning groove (311).

3. The valve and pipeline sealing structure according to claim 1, characterized in that: The diameter of the connecting pipe (31) gradually decreases from the side closer to the valve body (1) to the side farther away from the valve body (1). The pipe (2) includes a connecting part (21) and a pipe body (23) located at the end of the connecting part (21) away from the valve body (1). The inner diameter of the connecting part (21) gradually decreases from the side closer to the valve body (1) to the side farther away from the valve body (1).

4. The valve and pipeline sealing structure according to claim 3, characterized in that: The pipe (2) also includes a guide (22) that connects the connecting part (21) and the pipe body (23), and the inner diameter of the guide (22) gradually increases from the side closer to the valve body (1) to the side farther away from the valve body (1).

5. The valve and pipeline sealing structure according to claim 3, characterized in that: An elastic compensation ring (211) is provided on the inner wall of the connecting part (21).

6. The valve and pipeline sealing structure according to claim 1, characterized in that: It also includes a first connecting ring (41) fixedly connected to one end of the valve body (1) near the pipe (2), a second connecting ring (42) fixedly connected to one end of the pipe (2) near the valve body (1), and two locking sleeves (43) simultaneously fitted on the first connecting ring (41) and the second connecting ring (42).

7. The valve and pipeline sealing structure according to claim 6, characterized in that: Two of the locking sleeves (43) are fixedly connected to a magnetic block (431) at the contact surface.

8. The valve and pipeline sealing structure according to claim 6, characterized in that: The first connecting ring (41) is provided with a second sealing ring (412) on the side near the second connecting ring (42).

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