CN211852951U - Low-temperature stop valve - Google Patents

Low-temperature stop valve Download PDF

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Publication number
CN211852951U
CN211852951U CN202020422820.0U CN202020422820U CN211852951U CN 211852951 U CN211852951 U CN 211852951U CN 202020422820 U CN202020422820 U CN 202020422820U CN 211852951 U CN211852951 U CN 211852951U
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China
Prior art keywords
valve
gap
valve body
rod
low temperature
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CN202020422820.0U
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Chinese (zh)
Inventor
马志勇
姜鸥
杜平平
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Dalian Pinguan High And Medium Pressure Special Valve Co ltd
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Dalian Pinguan High And Medium Pressure Special Valve Co ltd
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Priority to CN202020422820.0U priority Critical patent/CN211852951U/en
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Abstract

The utility model provides a low temperature stop valve relates to valve technical field. This low temperature stop valve, including valve body, valve clack, valve rod, valve gap and hand wheel, first cavity and second cavity are separated into through the valve clack in the inside of valve body, the valve gap passes through bolt fixed connection with the valve body, and the junction of valve gap and valve body is equipped with the gasket, the inside fixed the inlaying that valve body one end was kept away from to the valve gap has the filler. This low temperature stop valve, set up the gasket through the junction at valve gap and valve body, the valve rod sets up the filler in the inside of valve gap, seal the junction of valve body and valve gap, install the valve rod in the inside of packing, thereby promote the leakproofness of valve rod in the valve gap, thereby effectually avoid in the valve body medium to leak from the gap between valve body and the valve gap and the gap between valve rod and the valve gap, thereby solved traditional low temperature valve and leaked when carrying the low temperature medium, thereby not only can cause the loss of enterprises, still can harm the problem of environment and personnel health.

Description

Low-temperature stop valve
Technical Field
The utility model relates to the technical field of valves, specifically be a low temperature stop valve.
Background
The low-temperature stop valve is a valve with a closing member (valve clack) moving along the central line of a valve seat, according to the moving form of the valve clack, the change of a valve seat through opening is in direct proportion to the stroke of the valve clack, and the valve is very suitable for adjusting the flow rate because the opening or closing stroke of a valve rod of the valve is relatively short and has a very reliable cutting function, and the change of the valve seat through opening is in direct proportion to the stroke of the valve clack, so the valve is very suitable for cutting or adjusting and throttling.
The low-temperature valve has harsh working conditions, particularly in the petrochemical industry and the LNG ship industry, low-temperature media are flammable and explosive, can be gasified when the temperature rises, have multiple volume expansion, and the leakage of the low-temperature media in production is not only the loss of enterprises, but also the leakage of toxic media can cause the harm to the environment and the health of personnel.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low temperature stop valve has solved the problem of proposing in the background art.
Technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a low temperature stop valve, includes valve body, valve clack, valve rod, valve gap and hand wheel, first cavity and second cavity are separated into through the valve clack to the inside of valve body, the valve gap passes through bolt fixed connection with the valve body, and the junction of valve gap and valve body is equipped with the gasket, the inside that valve body one end was kept away from to the valve gap is fixed to be inlayed and is had the filler, the top of valve gap is equipped with gland, gland passes through gland bolt and valve gap fixed connection, the valve rod runs through the inside of filler and gland's inside and extends to gland's top, the valve rod is kept away from the one end of valve clack through nut and hand wheel.
The further improvement is that the material of the filler is PTFE, and the filler made of PTFE has the advantages of acid and alkali resistance, resistance to various organic solvents, low friction coefficient and good lubricating property.
The further improvement does, the gasket uses metal winding formula gasket, through the gasket that sets up metal winding formula, possesses the advantage of high temperature resistant, high pressure and adaptation ultra-low temperature.
The valve cover is made of ZG1Cr18Ni9Ti, the valve rod is made of 1Cr18Ni9Ti, and the valve cover made of ZG1Cr18Ni9Ti and the valve rod made of 1Cr18Ni9Ti are arranged, so that the valve cover is high in corrosion resistance and long in service life.
The valve body is made of ZG1Cr18Ni9Ti + STL12, the valve flap is made of ZG1Cr18Ni9Ti + STL06, and the valve body made of ZG1Cr18Ni9Ti + STL12 and the valve flap made of ZG1Cr18Ni9Ti + STL06 are arranged, so that the oxidation resistance, the corrosion resistance and the heat resistance of the valve body and the valve flap are high.
1. This low temperature stop valve, set up the gasket through the junction at valve gap and valve body, the valve rod sets up the filler in the inside of valve gap, the junction to valve body and valve gap is sealed, thereby the leakproofness of stop valve has been promoted, install the valve rod in the inside of packing, thereby promote the leakproofness of valve rod in the valve gap, thereby the effectual gap of avoiding the valve body medium between valve body and the valve gap and the gap between valve rod and the valve gap of avoiding between the valve body and the valve gap leak, thereby traditional low temperature valve when carrying the low temperature medium has been solved, leak easily, thereby not only can cause the loss of enterprise, still harm the problem of environment and personnel health.
2. The low-temperature stop valve has the advantages of acid and alkali resistance and various organic solvents resistance by arranging the filler made of PTFE (polytetrafluoroethylene), low friction coefficient and good lubricating property, has the advantages of high temperature resistance, high pressure resistance and adaptation to ultralow temperature by arranging the metal winding type gasket, has a valve cover made of ZG1Cr18Ni9Ti material and a valve rod made of 1Cr18Ni9Ti material, and is strong in corrosion resistance and long in service life, and the oxidation resistance, corrosion resistance and heat resistance of the valve body and the valve clack are high by arranging the valve body made of ZG1Cr18Ni9Ti + STL12 material and the valve clack made of ZG1Cr18Ni9Ti + STL06 material.
Drawings
Fig. 1 is a partial sectional view of the present invention.
In the figure, the reference number is 1, valve body; 2. a valve flap; 3. a gasket; 4. a valve stem; 5. a valve cover; 6. a filler; 7. a nut; 8. a hand wheel; 9. a packing gland; 10. a gland bolt; 11. a first cavity; 12. a second cavity.
Detailed Description
As shown in fig. 1, an embodiment of the present invention provides a low temperature stop valve, which includes a valve body 1, a valve flap 2, a valve rod 4, a valve cover 5 and a handwheel 8, wherein the interior of the valve body 1 is divided into a first cavity 11 and a second cavity 12 by the valve flap 2, the valve body 1 is made of ZG1Cr18Ni9Ti + STL12, the valve flap 2 is made of ZG1Cr18Ni9Ti + STL06, the valve body 1 made of ZG1Cr18Ni9Ti + STL12 and the valve flap 2 made of ZG1Cr18Ni9Ti + STL06 are provided, so that the valve body 1 and the valve flap 2 have high oxidation resistance, corrosion resistance and heat resistance, the valve cover 5 is fixedly connected with the valve body 1 by bolts, a gasket 3 is provided at a connection between the valve cover 5 and the valve body 1, the gasket 3 is made of a metal winding type, the gasket 3 is provided, the gasket 5 is provided with a filler 6 fixed inside of the valve cover 5 far away from one end of the valve body 1, the filler 6 is made of PTFE, the PTFE is provided with various acid, the valve cover 5 is provided with a packing gland 9, the packing gland 9 is fixedly connected with the valve cover 5 through a gland bolt 10, the valve rod 4 penetrates through the interior of the packing 6 and the interior of the packing gland 9 and extends to the upper portion of the packing gland 9, the valve cover 5 is made of ZG1Cr18Ni9Ti, the valve rod 4 is made of 1Cr18Ni9Ti, the valve cover 5 made of ZG1Cr18Ni9Ti and the valve rod 4 made of 1Cr18Ni9Ti are arranged, the valve cover is strong in corrosion resistance and long in service life, and one end, far away from the valve clack 2, of the valve rod 4 is fixedly connected with a hand wheel 8 through a nut 7.
The utility model discloses the theory of operation as follows:
the valve rod 4 penetrates through the filler 6 and extends to the outside of the valve cover 5, so that the filler gland 9 is fixedly connected with the valve cover 5 through a gland bolt 10, one end of the valve rod 4 is fixedly connected with the valve clack 2, the other end of the valve rod 4 is fixedly connected with a hand wheel 8 through a nut 7, a gasket 3 is arranged at the gap between the valve body 1 and the valve cover 5, the valve body 1 is fixedly connected with the valve cover 5 through a bolt, the gasket 3 is arranged at the joint between the valve cover 5 and the valve body 1, the filler 6 is arranged in the valve rod 4 in the valve cover 5, the joint between the valve body 1 and the valve cover 5 is sealed, so that the sealing performance of the stop valve is improved, the valve rod 4 is arranged in the filler 6, so that the sealing performance of the valve rod 4 in the valve cover 5 is improved, and the medium in the valve body 1 is effectively prevented from leaking from the gap between the valve body 1 and, therefore, the problem that when a traditional low-temperature valve is used for conveying a low-temperature medium, leakage is easy to occur, so that enterprise loss is caused, and the environment and the personnel health are harmed is solved.

Claims (5)

1. The utility model provides a low temperature stop valve, includes valve body (1), valve clack (2), valve rod (4), valve gap (5) and hand wheel (8), its characterized in that: first cavity (11) and second cavity (12) are separated into through valve clack (2) to the inside of valve body (1), valve gap (5) pass through bolt fixed connection with valve body (1), and valve gap (5) are equipped with gasket (3) with the junction of valve body (1), the inside fixed of valve body (1) one end is kept away from in valve gap (5) is inlayed and is had packing (6), the top of valve gap (5) is equipped with gland (9), gland (9) are through gland bolt (10) and valve gap (5) fixed connection, valve rod (4) run through the inside of packing (6) and gland (9) and extend to the top of gland (9), the one end that valve clack (2) were kept away from in valve rod (4) is through nut (7) and hand wheel (8) fixed connection.
2. A cryogenic stop valve according to claim 1, wherein: the filler (6) is made of PTFE.
3. A cryogenic stop valve according to claim 1, wherein: the gasket (3) is a metal wound gasket.
4. A cryogenic stop valve according to claim 1, wherein: the valve cover (5) is made of ZG1Cr18Ni9Ti, and the valve rod (4) is made of 1Cr18Ni9 Ti.
5. A cryogenic stop valve according to claim 1, wherein: the valve body (1) is made of ZG1Cr18Ni9Ti + STL12, and the valve clack (2) is made of ZG1Cr18Ni9Ti + STL 06.
CN202020422820.0U 2020-03-29 2020-03-29 Low-temperature stop valve Active CN211852951U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020422820.0U CN211852951U (en) 2020-03-29 2020-03-29 Low-temperature stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020422820.0U CN211852951U (en) 2020-03-29 2020-03-29 Low-temperature stop valve

Publications (1)

Publication Number Publication Date
CN211852951U true CN211852951U (en) 2020-11-03

Family

ID=73138314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020422820.0U Active CN211852951U (en) 2020-03-29 2020-03-29 Low-temperature stop valve

Country Status (1)

Country Link
CN (1) CN211852951U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113464660A (en) * 2021-08-04 2021-10-01 凯瑞特阀业有限公司 Ultra-low temperature bellows gate valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113464660A (en) * 2021-08-04 2021-10-01 凯瑞特阀业有限公司 Ultra-low temperature bellows gate valve

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