CN210949963U - High seal structure of choke valve - Google Patents
High seal structure of choke valve Download PDFInfo
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- CN210949963U CN210949963U CN201921775674.3U CN201921775674U CN210949963U CN 210949963 U CN210949963 U CN 210949963U CN 201921775674 U CN201921775674 U CN 201921775674U CN 210949963 U CN210949963 U CN 210949963U
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- pressure piston
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Abstract
The utility model belongs to the technical field of the choke valve technique and specifically relates to a high seal structure of choke valve. The high seal structure of a throttle valve, its characterized in that: a valve rod is connected and arranged in the valve body, a back pressure piston is sleeved on the upper portion of the valve rod, the bottom of the back pressure piston abuts against the top of the valve sleeve, a valve sleeve seat is sleeved on the outer side of the valve sleeve, and the bottom of the valve sleeve seat abuts against the outlet sleeve; the upper part of the inner cavity of the back pressure piston is in sealing connection with the valve rod through a valve body sealing assembly; the lower part of the valve rod is hermetically connected with the inner cavity of the back pressure piston through a back pressure piston sealing ring; the outer side of the lower part of the back pressure piston is connected with the valve body in a sealing way through a back pressure piston sealing ring and a check ring; the bottom of the valve sleeve seat is hermetically connected with the top of the outlet sleeve through a valve seat sleeve sealing ring; the outlet sleeve is connected with the valve body in a sealing way through an outlet sleeve sealing ring. Compared with the prior art, the structure of parts such as the valve rod, the valve sleeve, the backpressure piston and the like is designed, and the requirements of ultralow torque and high sealing performance of the throttle valve are met.
Description
Technical Field
The utility model belongs to the technical field of the choke valve technique and specifically relates to a high seal structure of choke valve.
Background
In the traditional throttle valve body structure, because the structures of components such as a valve rod, a valve sleeve and the like are set, the high sealing effect is difficult to achieve, and under the general condition, the working state of the common throttle valve is only suitable for the design with the low sealing requirement. Therefore, it is very important to design a throttle valve structure with high sealing and ultra-low torque.
Disclosure of Invention
The utility model discloses an overcome prior art not enough, provide a high seal structure of choke valve, designed the structure of parts such as valve rod, valve barrel and backpressure piston, accomplished the requirement of the ultralow moment of torsion of choke valve and high leakproofness.
In order to realize above-mentioned purpose, design the high seal structure of a choke valve, including valve body, valve rod, backpressure piston, valve barrel, export cover, its characterized in that: a valve rod is connected and arranged in the valve body, a back pressure piston is sleeved on the upper portion of the valve rod, the bottom of the back pressure piston abuts against the top of the valve sleeve, a valve sleeve seat is sleeved on the outer side of the valve sleeve, and the bottom of the valve sleeve seat abuts against the outlet sleeve; the back pressure piston, the valve sleeve seat and the outlet sleeve are positioned in the valve body; the upper part of the inner cavity of the back pressure piston is in sealing connection with the valve rod through a valve body sealing assembly; the lower part of the valve rod is hermetically connected with the inner cavity of the back pressure piston through a back pressure piston sealing ring; the outer side of the lower part of the back pressure piston is connected with the valve body in a sealing way through a back pressure piston sealing ring and a check ring; the bottom of the valve sleeve seat is in sealing connection with the top of the outlet sleeve through a valve seat sleeve sealing ring; the outlet sleeve is positioned between the outlet sleeve and the valve body and is hermetically connected with the valve body through an outlet sleeve sealing ring.
The upper part of the inner cavity of the back pressure piston is provided with an annular bulge structure.
The valve sleeve is sleeved on the outer side of the lower part of the valve rod.
The outer side of the top of the back pressure piston is connected with the upper valve cover through a bolt.
The outlet sleeve is of a T-shaped sleeve structure, and a groove for installing a valve seat sleeve sealing ring is formed in the top of the outlet sleeve.
Compared with the prior art, the utility model, a high seal structure of choke valve is provided, has designed the structure of parts such as valve rod, valve barrel and backpressure piston, accomplishes the requirement of the ultralow moment of torsion of choke valve and high leakproofness.
Drawings
Fig. 1 is a perspective view of the structure of the present invention.
Fig. 2 is a schematic structural plan view of the present invention.
Fig. 3 is a partially enlarged schematic view of the present invention.
Referring to fig. 1 to 3, 8 is a valve stem, 11 is a valve sleeve, 13 is a back pressure piston, 13-1 is an annular protrusion structure, 14 is a valve sleeve seat, 15 is an outlet sleeve, 16 is a valve body sealing component, 17 is a back pressure piston sealing ring, 18 is a back pressure piston sealing ring and a retaining ring, 19 is a valve seat sleeve sealing ring, 20 is an outlet sleeve sealing ring, 21 is an upper valve cover, and 22 is a valve body.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 3, a valve rod 8 is connected inside the valve body 22, a back pressure piston 13 is sleeved on the upper portion of the valve rod 8, the bottom of the back pressure piston 13 abuts against the top of the valve sleeve 11, a valve sleeve seat 14 is sleeved on the outer side of the valve sleeve 11, and the bottom of the valve sleeve seat 14 abuts against the outlet sleeve 15; the back pressure piston 13, the valve sleeve seat 14 and the outlet sleeve 15 are positioned in the valve body 22; the upper part of the inner cavity of the back pressure piston 13 is in sealing connection with the valve rod 8 through a valve body sealing assembly 16; the lower part of the valve rod 8 is hermetically connected with the inner cavity of the back pressure piston 13 through a back pressure piston sealing ring 17; the outer side of the lower part of the back pressure piston 13 is connected with the valve body 22 in a sealing way through a back pressure piston sealing ring and a retainer ring 18; the bottom of the valve sleeve seat 14 is hermetically connected with the top of the outlet sleeve 15 through a valve seat sleeve sealing ring 19; the outlet sleeve 15 is connected with the valve body 22 in a sealing way through an outlet sleeve sealing ring 20.
The upper part of the inner cavity of the back pressure piston 13 is provided with an annular convex structure 13-1.
The valve sleeve 11 is sleeved outside the lower part of the valve rod 8.
The top outer side of the back pressure piston 13 is connected to the upper valve cover 21 by bolts.
The outlet sleeve 15 is of a T-shaped sleeve structure, and a groove for installing a valve seat sleeve sealing ring 19 is formed in the top of the outlet sleeve 15.
According to the requirement of high sealing, the structure of the back pressure piston 13 is improved, an annular bulge structure 13-1 is added in the back pressure piston 13, the annular bulge structure 13-1 forms an annular structure, and the diameter of the inner ring of the annular bulge structure is consistent with that of the upper part of the valve rod 8, so that the tightness of a liquid flow inner cavity between the lower part of the annular bulge structure 13-1 and the lower part of the valve rod 8 can be effectively ensured, in addition, the design of a valve body sealing component 16, a back pressure piston sealing ring 17, a back pressure piston sealing ring and a retainer ring 18, a valve seat sleeve sealing ring 19 and an outlet sleeve sealing ring 20 is added, and the design of multiple sealing is adopted, so that the liquid flow cavity between the inner part of the valve body 22 and the valve sleeve seat 14, the valve sleeve 11 and the valve rod.
Claims (5)
1. The utility model provides a high seal structure of choke valve, includes valve body, valve rod, backpressure piston, valve barrel, export cover, its characterized in that: a valve rod (8) is connected and arranged in the valve body (22), a back pressure piston (13) is sleeved on the upper portion of the valve rod (8), the bottom of the back pressure piston (13) is abutted to the top of the valve sleeve (11), a valve sleeve seat (14) is sleeved on the outer side of the valve sleeve (11), and the bottom of the valve sleeve seat (14) is abutted to the outlet sleeve (15); the back pressure piston (13), the valve sleeve seat (14) and the outlet sleeve (15) are positioned in the valve body (22); the upper part of the inner cavity of the back pressure piston (13) is in sealing connection with the valve rod (8) through a valve body sealing component (16); the lower part of the valve rod (8) is hermetically connected with the inner cavity of the back pressure piston (13) through a back pressure piston sealing ring (17); the outer side of the lower part of the back pressure piston (13) is hermetically connected with the valve body (22) through a back pressure piston sealing ring and a retainer ring (18); the bottom of the valve sleeve seat (14) is hermetically connected with the top of the outlet sleeve (15) through a valve seat sleeve sealing ring (19); the outlet sleeve (15) is connected with the valve body (22) in a sealing way through an outlet sleeve sealing ring (20).
2. The high sealing structure of a throttle valve according to claim 1, wherein: the upper part of the inner cavity of the back pressure piston (13) is provided with an annular convex structure (13-1).
3. The high sealing structure of a throttle valve according to claim 1, wherein: the valve sleeve (11) is sleeved on the outer side of the lower part of the valve rod (8).
4. The high sealing structure of a throttle valve according to claim 1, wherein: the outer side of the top of the back pressure piston (13) is connected with an upper valve cover (21) through a bolt.
5. The high sealing structure of a throttle valve according to claim 1, wherein: the outlet sleeve (15) is of a T-shaped sleeve structure, and a groove for installing a valve seat sleeve sealing ring (19) is formed in the top of the outlet sleeve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921775674.3U CN210949963U (en) | 2019-10-22 | 2019-10-22 | High seal structure of choke valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921775674.3U CN210949963U (en) | 2019-10-22 | 2019-10-22 | High seal structure of choke valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949963U true CN210949963U (en) | 2020-07-07 |
Family
ID=71372347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921775674.3U Active CN210949963U (en) | 2019-10-22 | 2019-10-22 | High seal structure of choke valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949963U (en) |
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2019
- 2019-10-22 CN CN201921775674.3U patent/CN210949963U/en active Active
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