CN109084022B - Ultra-low temperature ball valve seal ring - Google Patents
Ultra-low temperature ball valve seal ring Download PDFInfo
- Publication number
- CN109084022B CN109084022B CN201811107905.3A CN201811107905A CN109084022B CN 109084022 B CN109084022 B CN 109084022B CN 201811107905 A CN201811107905 A CN 201811107905A CN 109084022 B CN109084022 B CN 109084022B
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- sealing ring
- sealing
- ring body
- ultra
- sealing washer
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model provides an ultra-low temperature ball valve sealing washer, the setting is between spheroid and the valve body in the ultra-low temperature ball valve, the upper end fluting has on the outside of sealing washer body, both sides fluting and lower extreme fluting, the sealing washer downside is the easiest pressurized, design into the lower extreme fluting and run through R type straight flute, make it provide minimum holding power, reduce the sealed specific pressure of being used in on the sealing washer, sealing washer upside is the easiest pressurized, design into the non-R type chute that runs through with the upper end fluting, provide the biggest holding power, increase the sealed specific pressure of being used in on the sealing washer, the sealing washer left and right sides is in medium pressurized state, design into the non-R type straight flute that runs through with the both sides fluting. The invention makes the original uneven sealing specific pressure tend to be evenly distributed on the whole annular sealing ring, obtains even sealing specific pressure and strengthens the sealing capability of the valve.
Description
Technical Field
The invention relates to the field of ultralow-temperature top-mounted ball valves, in particular to a sealing ring special for a wedge-shaped sealing structure of an ultralow-temperature top-mounted ball valve.
Background
The ultra-low temperature ball valve is a special valve for an ultra-low temperature liquid cargo system on an LNG ship, and is difficult to disassemble and overhaul due to the fact that the valve is welded on a pipeline, so the top-mounted ultra-low temperature ball valve is generally used on the ship. The sealing surface of the top-mounted type ultralow-temperature ball valve is of a wedge-shaped structure, so that the sealing ring and the valve ball are reliably and physically fixed and cannot be loosened after being installed in place, a pressing force can be applied between the valve ball and the sealing surface to help sealing, and the top-mounted type ultralow-temperature ball valve is a structure which is most easy to overhaul and maintain for LNG ships, so that the top-mounted type ultralow-temperature ball valve is preferred in a ship environment generally. As shown in figure 1, the wedge-shaped sealing ring of the ultralow-temperature top-mounted ball valve is provided with R-shaped grooves, the upper side, the lower side, the left side and the right side of the sealing ring are all through grooves, and the shapes and the sizes of the R-shaped grooves are completely consistent. However, if the conventional annular sealing ring is fixed in the valve body, due to the downward pressing stress of the ball body, the upper and lower pressures borne by the sealing ring are uneven, which results in uneven specific sealing pressure of the sealing ring on the whole sealing ring, large specific sealing pressure at the lower side and small specific sealing pressure at the upper side, so that the lower side of the sealing ring is easy to seal and the upper side of the sealing ring is easy to leak, and the sealing surface with uneven specific sealing pressure is difficult to realize sealing requirements under the ultralow temperature working condition.
Disclosure of Invention
The invention provides an ultralow temperature ball valve sealing ring, which enables the original uneven sealing specific pressure to tend to be evenly distributed on the whole annular sealing ring, obtains even sealing specific pressure and strengthens the sealing capability of a valve.
In order to achieve the above object, the present invention provides an ultra-low temperature ball valve sealing ring, comprising:
the sealing ring body is of an annular structure;
the upper end opening groove is arranged at the top end of the outer side of the upper part of the sealing ring body, and the upper end opening groove is a non-penetrating R-shaped chute;
the two side grooves are respectively arranged at the top ends of the outer sides of the two sides of the sealing ring body, and the two side grooves are non-penetrating R-shaped straight grooves;
and the lower end opening groove is arranged at the top end of the outer side of the lower part of the sealing ring body and penetrates through the R-shaped straight groove.
The depth of the upper end slot is half of the thickness of the sealing ring body.
The inclined angle of the chute with the upper end being grooved is 6-10 degrees.
The penetration depth of the slots at the two sides is half of the thickness of the sealing ring body.
The invention also provides an ultra-low temperature ball valve, which comprises a sealing ring arranged between the valve body and the ball body, wherein the sealing ring comprises:
the sealing ring body is of an annular structure;
the upper end opening groove is arranged at the top end of the outer side of the upper part of the sealing ring body, and the upper end opening groove is a non-penetrating R-shaped chute;
the two side grooves are respectively arranged at the top ends of the outer sides of the two sides of the sealing ring body, and the two side grooves are non-penetrating R-shaped straight grooves;
and the lower end opening groove is arranged at the top end of the outer side of the lower part of the sealing ring body and penetrates through the R-shaped straight groove.
The depth of the upper end slot is half of the thickness of the sealing ring body.
The inclined angle of the chute with the upper end being grooved is 6-10 degrees.
The penetration depth of the slots at the two sides is half of the thickness of the sealing ring body.
The invention is specially used for the sealing ring under the ultralow temperature state (-163 ℃ to-196 ℃), so that the sealing ring can compensate shrinkage deformation, the ball body can be better contacted with the sealing ring, the ball body has different shrinkage capacities at the ultralow temperature, the uneven downward pressure stress of the wedge-shaped structure is offset, the sealing at the upper side of the ball body can be particularly compensated, and the surface contact tends to linear sealing, so that the sealing ring has even sealing specific pressure, the sealing effect is favorably realized, and the sealing ring is evenly sealed on the whole sealing ring.
Drawings
Fig. 1 is a conventional ring-shaped sealing structure of an ultra-low temperature top-loading type ball valve in the background art.
Fig. 2 is a schematic structural diagram of an ultra-low temperature ball valve sealing ring provided by the invention.
Fig. 3 is a schematic diagram of the use of an ultra-low temperature ball valve sealing ring provided by the invention.
Detailed Description
The preferred embodiment of the present invention will be described in detail below with reference to fig. 2 and 3.
As shown in fig. 2, the present invention provides an ultra-low temperature ball valve sealing ring, comprising:
the sealing ring comprises a sealing ring body 1 which is of an annular structure;
the upper end groove 101 is arranged at the top end of the outer side of the upper part of the sealing ring body 1, the upper end groove 101 is a non-penetrating R-shaped chute, the penetrating depth of the upper end groove is half of the thickness of the sealing ring body 1, and the inclination angle of the chute is 6-10 degrees;
the two side open grooves 102 are respectively arranged at the top ends of the outer sides of the two sides of the sealing ring body 1, the two side open grooves 102 are non-penetrating R-shaped straight grooves, and the penetrating depth of the two side open grooves is half of the thickness of the sealing ring body 1;
and a lower end slot 103 arranged at the top end of the lower outer side of the sealing ring body 1, wherein the lower end slot 103 is a straight slot penetrating through the R shape.
As shown in fig. 3, the sealing ring of the ultra-low temperature ball valve provided by the invention is arranged between a ball body 2 and a valve body 3 in the ultra-low temperature ball valve, a sealing ring body 1 is respectively contacted with the ball body 2 and the valve body 3, one side of the sealing ring body 1 which is not contacted with the ball body 2, namely, the outer side is provided with an upper end open groove 101, two side open grooves 102 and a lower end open groove 103, the lower side of the sealing ring is most easily pressed, the lower end open groove 103 is designed to penetrate through an R-shaped straight groove to provide the least supporting force and reduce the sealing specific pressure acting on the sealing ring, the upper side of the sealing ring is least easily pressed, the upper end open groove 101 is designed to be a non-penetrating R-shaped inclined groove to provide the maximum supporting force and increase the sealing specific pressure acting on the sealing ring, the left side and the right side of the sealing ring are in a medium pressing state, and the two side open grooves 102 are designed to be non-penetrating R-shaped straight grooves to provide the medium supporting force. Therefore, the upper part, the lower part, the left part and the right part are uniformly pressed, the original uneven sealing specific pressure tends to be uniformly distributed on the whole annular sealing ring, the uniform sealing specific pressure is obtained, and the sealing capability of the valve is enhanced.
The ultralow-temperature ball valve sealing ring is specially used at the ultralow temperature (from minus 163 ℃ to minus 196 ℃), so that the sealing ring can compensate shrinkage deformation, a ball body can be better contacted with the sealing ring, the sealing ring has different shrinkage capacities at the ultralow temperature, uneven pressing stress of a wedge-shaped structure is offset, the sealing at the upper side of the ball body can be especially compensated, and surface contact tends to linear sealing, so that uniform specific sealing pressure is arranged on the sealing ring, the sealing effect is favorably realized, and the sealing ring is uniformly sealed on the whole sealing ring.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (2)
1. The utility model provides an ultra-low temperature ball valve sealing washer which characterized in that contains:
the sealing ring comprises a sealing ring body (1) which is of an annular structure;
the upper end open slot (101) is arranged at the top end of the outer side of the upper part of the sealing ring body (1), the upper end open slot (101) is a non-penetrating R-shaped chute, and the inclination angle of the chute is 6-10 degrees;
the two side open grooves (102) are respectively arranged at the top ends of the outer sides of the two sides of the sealing ring body (1), and the two side open grooves (102) are non-penetrating R-shaped straight grooves;
the lower end open slot (103) is arranged at the top end of the outer side of the lower part of the sealing ring body (1), and the lower end open slot (103) penetrates through the R-shaped straight slot;
the penetration depth of the upper end groove (101) is half of the thickness of the sealing ring body (1);
the penetration depth of the slots (102) at the two sides is half of the thickness of the sealing ring body (1).
2. The utility model provides an ultra-low temperature ball valve, its characterized in that, this ultra-low temperature ball valve contain the sealing washer that sets up between valve body and spheroid, the sealing washer contain:
the sealing ring comprises a sealing ring body (1) which is of an annular structure;
an upper end slot (101) is arranged at the top end of the outer side of the upper part of the sealing ring body (1), and the upper end slot (101) is a non-penetrating R-shaped chute;
the two side open grooves (102) are respectively arranged at the top ends of the outer sides of the two sides of the sealing ring body (1), and the two side open grooves (102) are non-penetrating R-shaped straight grooves;
the lower end open slot (103) is arranged at the top end of the outer side of the lower part of the sealing ring body (1), and the lower end open slot (103) penetrates through the R-shaped straight slot;
the penetration depth of the upper end groove (101) is half of the thickness of the sealing ring body (1);
the inclined angle of the chute of the upper end slot (101) is 6-10 degrees;
the penetration depth of the slots (102) at the two sides is half of the thickness of the sealing ring body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107905.3A CN109084022B (en) | 2018-09-21 | 2018-09-21 | Ultra-low temperature ball valve seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107905.3A CN109084022B (en) | 2018-09-21 | 2018-09-21 | Ultra-low temperature ball valve seal ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084022A CN109084022A (en) | 2018-12-25 |
| CN109084022B true CN109084022B (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811107905.3A Active CN109084022B (en) | 2018-09-21 | 2018-09-21 | Ultra-low temperature ball valve seal ring |
Country Status (1)
| Country | Link |
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| CN (1) | CN109084022B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551055B (en) * | 2021-07-27 | 2023-08-25 | 凯瑞特阀业集团有限公司 | Ultra-low temperature integral ball valve |
| CN113864475A (en) * | 2021-09-28 | 2021-12-31 | 凯瑞特阀业有限公司 | Flow adaptation structure of ultra-low temperature integral type ball valve |
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| CN102155552A (en) * | 2011-04-21 | 2011-08-17 | 苏州市燃气设备阀门制造有限公司 | Low torsion moment ball valve for fuel gas vertical pipe |
| CN202812312U (en) * | 2012-09-19 | 2013-03-20 | 浙江远安流体设备有限公司 | Three-way ball valve |
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| CN204226715U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of low temperature feeding upper-mounting type ball valve |
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| Publication number | Publication date |
|---|---|
| CN109084022A (en) | 2018-12-25 |
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