CN110985682A - Sealing structure for improving scouring resistance of sealing surface of stop valve - Google Patents
Sealing structure for improving scouring resistance of sealing surface of stop valve Download PDFInfo
- Publication number
- CN110985682A CN110985682A CN201911221211.7A CN201911221211A CN110985682A CN 110985682 A CN110985682 A CN 110985682A CN 201911221211 A CN201911221211 A CN 201911221211A CN 110985682 A CN110985682 A CN 110985682A
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- clack
- sealed face
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 36
- 238000009991 scouring Methods 0.000 title claims abstract description 10
- 230000006978 adaptation Effects 0.000 claims abstract description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000007670 refining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The utility model provides an improve seal structure of sealed face of stop valve scouring resistance, includes valve body, valve clack, the sealed face setting of disk seat of valve body is in the outside of disk seat mouth, is the back taper type, and the inboard sealed face adaptation with this back taper type of valve clack forms the sealed pair of back taper type. The lower end face of the valve clack is an inwards concave spherical surface, and the sealing surfaces are arranged at two ends of the inwards concave spherical surface. The sealing surface of the valve body is designed at the outer side of the passage opening of the valve seat, and the sealing surface of the valve clack is designed at the inner side of the lower end, so that an inverted cone-shaped sealing pair is formed. No matter the medium advances highly or advances lowly, can not erode the sealed face of valve body and valve clack at the moment that the stop valve opened and closed, consequently improved the sealed face of valve and resisted the ability of erodeing, prolonged the life of valve.
Description
Technical Field
The invention belongs to the technical field of valve manufacturing, and particularly relates to a sealing structure for improving the scouring resistance of a sealing surface of a stop valve.
Background
The stop valve plays a role in cutting off medium circulation in a pipeline, and is widely applied to industries of oil refining, chemical engineering, coal gas, natural gas, liquefied petroleum gas and the like due to simple structure, short stroke and convenient operation. Particularly in the oil refining petrochemical industry, along with the upgrading and reconstruction of an oil refining device, the pressure, the temperature and the flow rate of a medium are all improved, so that higher requirements are put forward on the sealing performance of the valve.
The traditional structure of the stop valve is that a valve clack contacts with a valve seat of a valve body by a conical surface to form a sealing pair. When the stop valve is closed and opened, due to the narrow flow area, a high-pressure and high-flow-rate medium directly washes the valve clack and the valve seat sealing surface of the valve body when flowing through the sealing pair, and the sealing surface is washed out of the groove after being used for a period of time, so that the sealing performance of the stop valve is seriously influenced.
Disclosure of Invention
The invention provides a sealing structure for improving the scouring resistance of the sealing surface of a stop valve, which improves the scouring resistance of the sealing surface of the valve and prolongs the service life of the valve.
The technical scheme adopted by the invention is as follows:
the utility model provides an improve seal structure of sealed face of stop valve scouring resistance, includes valve body, valve clack, the sealed face setting of disk seat of valve body is in the outside of disk seat mouth, is the back taper type, and the inboard sealed face adaptation with this back taper type of valve clack forms the sealed pair of back taper type.
The lower end face of the valve clack is an inwards concave spherical surface, and the sealing surfaces are arranged at two ends of the inwards concave spherical surface.
The sealing surface of the valve body is designed at the outer side of the passage opening of the valve seat, and the sealing surface of the valve clack is designed at the inner side of the lower end, so that an inverted cone-shaped sealing pair is formed. No matter the medium advances highly or advances lowly, can not erode the sealed face of valve body and valve clack at the moment that the stop valve opened and closed, consequently improved the sealed face of valve and resisted the ability of erodeing, prolonged the life of valve.
Drawings
FIG. 1 is a schematic view of a prior art valve flap and valve body seal arrangement;
FIG. 2 is an overall structural view of the valve;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a schematic diagram of the low in and high out flush of the medium of the present invention;
FIG. 5 is a schematic diagram of a medium high-inlet low-outlet flushing according to the present invention;
in the figure: 1. valve body 2, valve clack 3, valve rod 4, valve clack cover 5, stuffing box 6, sealing ring 7, pressing ring 8, four open rings 9, stuffing 10, backing ring 11, pressing plate 12, stuffing spacer ring 13, stuffing pressing sleeve 14, stuffing pressing plate 15, stud 16, nut 17, support 18, gear box 19, stud 20, nut 21, guide plate 22, bolt 23, nut 24, stud 25, nut 26, stud 27, nut 28, stuffing pad 29, bolt
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2 and 3, the sealing structure for improving the scouring resistance of the sealing surface of the stop valve comprises a valve body 1 and a valve clack 2; the sealing surface of the valve seat of the valve body 1 is arranged on the outer side of the valve seat opening and is in an inverted cone shape, and the inner side of the valve clack 2 and the sealing surface of the inverted cone shape are matched to form an inverted cone sealing pair. The invention moves the valve seat sealing surface arranged on the inner side of the valve seat opening in the prior art to the outer side of the valve seat opening, so that no matter the medium is advanced high or advanced low, the high-pressure high-flow-rate medium can not directly wash the valve seat sealing surface of the valve body at the opening and closing moment of the stop valve.
The lower end face of the valve clack 2 is an inwards concave spherical surface, and the sealing surfaces are arranged at two ends of the inwards concave spherical surface. At the moment when the stop valve is opened and closed, the spherical surface of the lower end surface of the valve clack 2 directs the reaction force of the medium to the center of the channel of the valve body 1, so that the medium is prevented from directly scouring the sealing surface of the valve clack.
Claims (2)
1. The utility model provides an improve seal structure of sealed face of stop valve scouring resistance ability, includes valve body, valve clack, its characterized in that, the sealed face setting of disk seat of valve body (1) is the back taper type in the outside of disk seat mouth, and valve clack (2) inboard and the sealed face adaptation of this back taper type form the sealed vice of back taper type.
2. A sealing structure for improving the flushing resistance of the sealing surface of the stop valve according to claim 1, characterized in that the lower end surface of the valve clack (2) is a concave spherical surface, and the sealing surface is arranged at two ends of the concave spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911221211.7A CN110985682A (en) | 2019-12-03 | 2019-12-03 | Sealing structure for improving scouring resistance of sealing surface of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911221211.7A CN110985682A (en) | 2019-12-03 | 2019-12-03 | Sealing structure for improving scouring resistance of sealing surface of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985682A true CN110985682A (en) | 2020-04-10 |
Family
ID=70089561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911221211.7A Withdrawn CN110985682A (en) | 2019-12-03 | 2019-12-03 | Sealing structure for improving scouring resistance of sealing surface of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198505A (en) * | 2020-09-17 | 2022-03-18 | 浙江盾安禾田金属有限公司 | Shut-off valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9113240U1 (en) * | 1991-10-24 | 1992-01-09 | Metallwerke Gebr. Seppelfricke Gmbh & Co, 4650 Gelsenkirchen | Shut-off valve with rising valve cone spindle |
| CN102141157A (en) * | 2011-03-18 | 2011-08-03 | 赵安东 | Erosion-prevention stop valve seal pair |
| CN102374320A (en) * | 2011-11-14 | 2012-03-14 | 盐城法尔机械有限公司 | Dual-purpose cutoff valve |
| CN203463688U (en) * | 2013-08-26 | 2014-03-05 | 永嘉县永乐高中压标准件有限公司 | Valve clack of stop valve |
| CN109812588A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | Elastic conical surface valve seat sealing structure for stop valve |
-
2019
- 2019-12-03 CN CN201911221211.7A patent/CN110985682A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9113240U1 (en) * | 1991-10-24 | 1992-01-09 | Metallwerke Gebr. Seppelfricke Gmbh & Co, 4650 Gelsenkirchen | Shut-off valve with rising valve cone spindle |
| CN102141157A (en) * | 2011-03-18 | 2011-08-03 | 赵安东 | Erosion-prevention stop valve seal pair |
| CN102374320A (en) * | 2011-11-14 | 2012-03-14 | 盐城法尔机械有限公司 | Dual-purpose cutoff valve |
| CN203463688U (en) * | 2013-08-26 | 2014-03-05 | 永嘉县永乐高中压标准件有限公司 | Valve clack of stop valve |
| CN109812588A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | Elastic conical surface valve seat sealing structure for stop valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198505A (en) * | 2020-09-17 | 2022-03-18 | 浙江盾安禾田金属有限公司 | Shut-off valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200410 |