CN203926887U - Cryogenic ball valve - Google Patents
Cryogenic ball valve Download PDFInfo
- Publication number
- CN203926887U CN203926887U CN201420362977.3U CN201420362977U CN203926887U CN 203926887 U CN203926887 U CN 203926887U CN 201420362977 U CN201420362977 U CN 201420362977U CN 203926887 U CN203926887 U CN 203926887U
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- valve
- filler
- greasing
- automatic
- vacuum ring
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Abstract
The utility model relates to a kind of cryogenic ball valve, comprise valve body, valve seat, spheroid, valve rod, valve gap, handle, Sealing and assembling set, valve rod lower end is fixedly connected with spheroid, and upper end is fixedly connected with handle, between valve rod and valve gap, be provided with stuffing seal, valve gap adopts and lengthens neck structure; Be mainly that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring be set, vacuum ring inner chamber is communicated with automatic greasing device, and the upper end of upper filler is provided with filler automatic compensator; Described automatic greasing device is comprised of the signal emitter and the greasing solenoid valve that are arranged between lower filler and vacuum ring, and the control signal of signal emitter is connected in the power circuit of greasing solenoid valve; Described filler automatic compensator is comprised of the butterfly spring being arranged between Gland and hold-down grid; Between valve body lumen and valve outlet passage, be provided with pressure release passage.There is the advantages such as sealability is reliable, Security is good, be applicable to cryogenic media operating mode.
Description
Technical field
The utility model relates to valve field, particularly about a kind of ball valve.The utility model is applicable to cryogenic media operating mode.
Background technique
Ball valve is because of on medium transport pipeline simple in structure, that open-close convenient is widely used in every profession and trade, its structure comprises valve body, valve seat, spheroid, valve rod, valve gap, handwheel, valve rod lower end is fixedly connected with spheroid, and upper end is fixedly connected with handwheel, between valve rod and valve gap, is provided with stuffing seal.The ball valve using for cryogenic media operating mode, requires valve zero external leakage, and the mode security incident in order to avoid cryogenic media leaks outside, so valve gap generally adopts lengthening neck structure, to reduce the impact of temperature on packing seal letter sealability.But in valve opening and closing process, the movement of valve rod produces wearing and tearing to the filler of packing seal letter, reduces the sealability of packing seal letter, even occurs leaking outside.The shortcoming of this artificial greasing is cannot know when leaking appears in filler need to carry out greasing, and the valve using being installed on field, and artificial greasing is inconvenient, troublesome maintenance.In addition, spheroid and valve seat generally adopt import and export double sealing structure, and under valve closing state, valve body lumen medium Yin Wendu raises to produce and extremely boosts, and dangerous body strength, valve body bursting accident even occurs.
Summary of the invention
The purpose of this utility model is the problem existing for prior art, when the rear appearance leakage of filler wearing and tearing between a kind of valve rod and valve gap is provided, can carry out automatic greasing sealing, easy to maintenance, sealability is reliable, prevent valve pocket occur extremely the boosting cryogenic ball valve of phenomenon.
The technical solution of the utility model comprises valve body, valve seat, spheroid, valve rod, valve gap, handle, Sealing and assembling set, valve rod lower end is fixedly connected with spheroid, upper end is fixedly connected with handle, between valve rod and valve gap, is provided with stuffing seal, and valve gap adopts and lengthens neck structure; Be mainly that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring be set, vacuum ring inner chamber is communicated with automatic greasing device, and the upper end of upper filler is provided with filler automatic compensator; Described automatic greasing device is comprised of the signal emitter and the greasing solenoid valve that are arranged between lower filler and vacuum ring, and the control signal of signal emitter is connected in the power circuit of greasing solenoid valve; Described filler automatic compensator is comprised of the butterfly spring being arranged between Gland and hold-down grid; Between valve body lumen and valve outlet passage, be provided with pressure release passage.
One of advantage of the present utility model is that packing seal letter adopts dual pressing sealing structure, the middle vacuum ring of installing carries out greasing sealing, make lumen form triple seal structure, vacuum ring inner chamber is communicated with automatic greasing device, when occurring to leak, filler wearing and tearing automatically carry out greasing sealing, solved and be installed on the artificial greasing inconvenience of the valve using in field, problem difficult in maintenance, has improved the lumen sealing reliability between valve rod and valve gap;
Two of advantage of the present utility model is, in the upper end of upper filler, filler automatic compensator is set, and after filler is frayed, the elastic force automatic impaction packing seal letter of filler automatic compensator butterfly spring, keeps lumen sealability;
Three of advantage of the present utility model is, between valve body lumen and valve outlet passage, pressure release passage is set, and lumen pressure medium is communicated with valve channel, avoids occurring that lumen boosts extremely that valve body bursting accident occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Cryogenic ball valve as shown in Figure 1, comprise valve body 1, valve seat 2, spheroid 3, valve rod 5, valve gap 4, handle 14, Sealing and assembling set, valve rod 5 lower ends are fixedly connected with spheroid 3, upper end is fixedly connected with handle 14, between valve rod 5 and valve gap 4, be provided with stuffing seal, valve gap 4 adopts and lengthens neck structure, reduces the impact of temperature on packing seal letter sealability.Packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring 7 is set, and vacuum ring 7 inner chambers are communicated with automatic greasing device, make to form three seal structures between valve rod 5 and valve gap 4.Described automatic greasing device is comprised of the signal emitter 6 and the greasing solenoid valve 10 that are arranged between lower filler and vacuum ring 7, and the control signal of signal emitter 6 is connected in the power circuit of greasing solenoid valve 10.Signal emitter 6 can be according to the different adopts pressure sensors of working medium or liquid sensor, gas transducer, and the control signal of signal emitter 6 is by carrying joint 9 outputs, and greasing solenoid valve 10 is by greasing joint 11 connection vacuum rings 7.Instantly filler frayed after, medium leaks into signal emitter 6 places, signal emitter 6 is converted to electrical signal by the leakage medium signal detecting, and greasing solenoid valve 10 is opened vacuum ring 7 greasings.The upper end of upper filler is provided with filler automatic compensator, this filler automatic compensator is comprised of the butterfly spring 8 being arranged between Gland 12 and hold-down grid 13, after filler is frayed, the elastic force automatic impaction packing seal letter of butterfly spring 8, keeps the lumen sealability between valve rod 5 and valve gap 4; Between valve body 1 lumen and valve body 1 passage, be provided with pressure release passage, described pressure release passage adopt on spheroid 3, manufacture one with the relief hole 15 of spheroid 3 channel vertical,, lumen pressure medium and valve body 1 imported and exported to channel connection, avoid occurring that lumen boosts extremely that valve body bursting accident occurs.
Claims (1)
1. a cryogenic ball valve, comprise valve body (1), valve seat (2), spheroid (3), valve rod (5), valve gap (4), handle (14), Sealing and assembling set, valve rod (5) lower end is fixedly connected with spheroid (3), upper end is fixedly connected with handle (14), between valve rod (5) and valve gap (4), be provided with stuffing seal, valve gap (4) adopts and lengthens neck structure; It is characterized in that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring (7) is set, vacuum ring (7) inner chamber is communicated with automatic greasing device, and the upper end of upper filler is provided with filler automatic compensator; Described automatic greasing device is comprised of the signal emitter (6) and the greasing solenoid valve (10) that are arranged between lower filler and vacuum ring (7), and the control signal series connection of signal emitter (6) is in the power circuit of greasing solenoid valve (10); Described filler automatic compensator is comprised of the butterfly spring (8) being arranged between Gland (12) and hold-down grid (13); Between valve body (1) lumen and valve body (1) outlet passage, be provided with pressure release passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362977.3U CN203926887U (en) | 2014-06-25 | 2014-06-25 | Cryogenic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362977.3U CN203926887U (en) | 2014-06-25 | 2014-06-25 | Cryogenic ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926887U true CN203926887U (en) | 2014-11-05 |
Family
ID=51822699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420362977.3U Active CN203926887U (en) | 2014-06-25 | 2014-06-25 | Cryogenic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926887U (en) |
-
2014
- 2014-06-25 CN CN201420362977.3U patent/CN203926887U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |