CN104329469A - Novel low-temperature ball valve - Google Patents
Novel low-temperature ball valve Download PDFInfo
- Publication number
- CN104329469A CN104329469A CN201410590252.4A CN201410590252A CN104329469A CN 104329469 A CN104329469 A CN 104329469A CN 201410590252 A CN201410590252 A CN 201410590252A CN 104329469 A CN104329469 A CN 104329469A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- valve
- ball
- spring
- ball valve
- 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.)
- Pending
Links
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
- F16K1/14—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 ball-shaped valve member
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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
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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
- F16K1/36—Valve members
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention belongs to the technical field of a valve and particularly relates to a natural gas valve, in particular to a novel low-temperature ball valve. The novel low-temperature ball valve is characterized by comprising a ball sleeve, a ball, a valve core, a valve body, a screw sleeve, a first sealing ring, a second sealing ring, a lining sleeve, a spring cover, a cushion ring, a hand wheel, a spring, a spring compression cushion, a compression nut, a valve rod and a third sealing ring, wherein the ball sleeve is arranged at the lower end of the low-temperature ball valve; the ball is arranged in the ball sleeve.
Description
Technical field
The invention belongs to valve technology field, be specifically related to natural gas valve, particularly relate to a kind of New Type of Cryogenic Ball Valve.
Background technique
At present, domestic and international Subzero valve all adopts stop valve, and valve rod place Sealing adopts PTFE, and spool place also adopts PTFE to seal.
Existing scheme sealing is mainly through seal ring, seal ring, seal ring composition.Wherein, sealing when seal ring turns off as valve, this place's seal pressure passes to valve rod mainly through rotation hand wheel, is moved downward by valve rod rotating band movable valve plug, seal ring and valve body contact thus form sealing.Seal ring and seal ring, valve rod form sealing jointly, and the seal pressure of this two seals is mainly from spring, gland nut.After gland nut is tightened, handwheel produces a downward pressure F1 to seal ring, and this pressure compaction seal ring, seals together with seal ring is formed with valve rod.After tightening to gland nut, spring is compressed, and spring is to valve rod one power F2 upwards, and valve rod upwards furthers by F2, seals together with seal ring is formed with valve rod.
Existing scheme major defect is:
1, sealing ring material and the valve rod shrinkage difference when low temperature that adopts of valve rod place is large, and only has two seals, and cause after long-term dry grinding use, valve rod and sealing material wear and tear and cause seal failure.
2, the sealing material that adopts of spool place when low temperature shrinkage much larger than valve body, and because of its hardness low, intensity is low, causes under large discharge cryogenic liquide long term, and distortion is serious, causes seal failure.
As the patent No. is: CN201120496521.2, patent name is: Combined type overcurrent protective valve, and making a summary is: the utility model is a kind of Combined type overcurrent protective valve, and integrated overcurrent protective valve, one-way valve, hand reset valve three functions are in one.Be made up of hand reset valve, reset spool, spring, overcurrent protection valve core, air input joint, valve body, air outlet adapter, inner elements of check valve, one-way valve joint etc.
Summary of the invention
A kind of New Type of Cryogenic Ball Valve, it is characterized in that comprising: ball cover, ball, spool, valve body, swivel nut, first seal ring, second seal ring, lining, spring shield, packing ring, handwheel, spring, spring pressure pad, gland nut, valve rod and the 3rd seal ring, described ball cover is arranged on the lower end of cryogenic ball valve, described ball is arranged on the inside of ball cover, described spool is arranged on the top of ball cover, described swivel nut is arranged on the middle part of cryogenic ball valve, the first described seal ring and the second seal ring are arranged between described swivel nut and described lining, described spring shield is arranged on the surrounding of described spring, described packing ring is arranged between described handwheel and described swivel nut, described spring pressure pad is arranged on the top of described spring, described gland nut is arranged on the top of cryogenic ball valve, described valve rod is arranged on the below of described lining, the 3rd described seal ring is arranged on the below of described valve rod.
Described first seal ring and the second seal ring are PCTFE material.
The first described seal ring and the seal pressure of the second seal ring are: 20MPa.
The elasticity coefficient of described spring is: K=3.1X10
4n/mm.
The 3rd described seal ring is elastic graphite material.
The first described seal ring is 1:1 with the ratio of the radius of the second seal ring.
Beneficial effect of the present invention:
1, valve rod place seal ring 7, seal ring 6 adopt the PCTFE material that resistance to low temperature is better, intensity is higher, effectively reduce because seal ring low-temperature deformation is on the impact of sealing.
2, increase the elastic force of spring 12, also immediately increase the seal pressure of seal ring 7, seal ring 6, strengthen sealability.
3, increase by one seal ring 16, sealing circle adopts elastic graphite sealing, and graphite has excellent resistance to low temperature, excellent self-lubricating property, can reduce the wearing and tearing between seal ring and valve rod, lift-off seal performance.
4, the sealing at spool place is improved.
Former employing PTFE material sealing is changed into and adopts the silicon nitride ceramics spheroid that resistance to low temperature is better, wear-resisting property is more excellent.Silicon nitride ceramics to have when low temperature shrinkage well below PTFE; And its hardness is far above PTFE, therefore intensity is higher, and wear-resisting property is better.
Silicon nitride ceramics spheroid adopts split-type structural, adopts rolling technology to fix, and has and changes conveniently, the advantages such as good seal performance.
reference character
1-ball cover, 2-ball, 3-spool, 4-valve body, 5-swivel nut, 6-first seal ring, 7-second seal ring, 8-lining, 9-spring shield, 10 ,-packing ring, 11-handwheel, 12-spring, 13-spring pressure pad, 14-gland nut, 15 ,-valve rod, 16-the 3rd seal ring.
accompanying drawing illustrates:
Fig. 1 is structural drawing of the present invention.
concrete mode of execution:
embodiment 1:
A kind of New Type of Cryogenic Ball Valve, it is characterized in that comprising: ball cover 1, ball 2, spool 3, valve body 4, swivel nut 5, first seal ring 6, second seal ring 7, lining 8, spring shield 9, packing ring 10, handwheel 11, spring 12, spring pressure pad 13, gland nut 14, valve rod 15 and the 3rd seal ring 16, described ball cover 1 is arranged on the lower end of cryogenic ball valve, described ball 2 is arranged on the inside of ball cover 1, described spool 3 is arranged on the top of ball cover 1, described swivel nut 5 is arranged on the middle part of cryogenic ball valve, the first described seal ring 6 and the second seal ring 7 are arranged between described swivel nut 5 and described lining 8, described spring shield 9 is arranged on the surrounding of described spring 12, described packing ring 10 is arranged between described handwheel 11 and described swivel nut 5, described spring pressure pad 13 is arranged on the top of described spring 12, described gland nut 14 is arranged on the top of cryogenic ball valve, described valve rod 15 is arranged on the below of described lining 8, the 3rd described seal ring 16 is arranged on the below of described valve rod 15.
embodiment 2:
A kind of New Type of Cryogenic Ball Valve, it is characterized in that comprising: ball cover 1, ball 2, spool 3, valve body 4, swivel nut 5, first seal ring 6, second seal ring 7, lining 8, spring shield 9, packing ring 10, handwheel 11, spring 12, spring pressure pad 13, gland nut 14, valve rod 15 and the 3rd seal ring 16, described ball cover 1 is arranged on the lower end of cryogenic ball valve, described ball 2 is arranged on the inside of ball cover 1, described spool 3 is arranged on the top of ball cover 1, described swivel nut 5 is arranged on the middle part of cryogenic ball valve, the first described seal ring 6 and the second seal ring 7 are arranged between described swivel nut 5 and described lining 8, described spring shield 9 is arranged on the surrounding of described spring 12, described packing ring 10 is arranged between described handwheel 11 and described swivel nut 5, described spring pressure pad 13 is arranged on the top of described spring 12, described gland nut 14 is arranged on the top of cryogenic ball valve, described valve rod 15 is arranged on the below of described lining 8, the 3rd described seal ring 16 is arranged on the below of described valve rod 15.
Described first seal ring 7 and the second seal ring 6 are PCTFE material.
The first described seal ring 7 and the seal pressure of the second seal ring 6 are: 20MPa.
The elasticity coefficient of described spring 12 is: K=3.1X10
4n/mm.
The 3rd described seal ring 16 is elastic graphite material.
The ratio of the first described seal ring 6 and the radius of the second seal ring 7 is 1:1.
Claims (6)
1. a New Type of Cryogenic Ball Valve, is characterized in that comprising: ball cover (1), ball (2), spool (3), valve body (4), swivel nut (5), first seal ring (6), second seal ring (7), lining (8), spring shield (9), packing ring (10), handwheel (11), spring (12), spring pressure pad (13), gland nut (14), valve rod (15) and the 3rd seal ring (16), described ball cover (1) is arranged on the lower end of cryogenic ball valve, described ball (2) is arranged on the inside of ball cover (1), described spool (3) is arranged on the top of ball cover (1), described swivel nut (5) is arranged on the middle part of cryogenic ball valve, described the first seal ring (6) and the second seal ring (7) are arranged between described swivel nut (5) and described lining (8), described spring shield (9) is arranged on the surrounding of described spring (12), described packing ring (10) is arranged between described handwheel (11) and described swivel nut (5), described spring pressure pad (13) is arranged on the top of described spring (12), described gland nut (14) is arranged on the top of cryogenic ball valve, described valve rod (15) is arranged on the below of described lining (8), the 3rd described seal ring (16) is arranged on the below of described valve rod (15).
2. a kind of New Type of Cryogenic Ball Valve according to claim 1, is characterized in that: described first seal ring (7) and the second seal ring (6) are PCTFE material.
3. a kind of New Type of Cryogenic Ball Valve according to claim 1, is characterized in that: described the first seal ring (7) with the seal pressure of the second seal ring (6) is: 20MPa.
4. a kind of New Type of Cryogenic Ball Valve according to claim 1, is characterized in that: the elasticity coefficient of described spring (12) is: K=3.1X10
4n/mm.
5. a kind of New Type of Cryogenic Ball Valve according to claim 1, is characterized in that: the 3rd described seal ring (16) is elastic graphite material.
6. a kind of New Type of Cryogenic Ball Valve according to claim 1, is characterized in that: described the first seal ring (6) is 1:1 with the ratio of the radius of the second seal ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590252.4A CN104329469A (en) | 2014-10-29 | 2014-10-29 | Novel low-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590252.4A CN104329469A (en) | 2014-10-29 | 2014-10-29 | Novel low-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329469A true CN104329469A (en) | 2015-02-04 |
Family
ID=52404243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410590252.4A Pending CN104329469A (en) | 2014-10-29 | 2014-10-29 | Novel low-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329469A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747739A (en) * | 2015-03-30 | 2015-07-01 | 江苏神通阀门股份有限公司 | Instrument sampling valve capable of automatically updating sealing face |
| CN106838407A (en) * | 2016-12-29 | 2017-06-13 | 无锡刚正精密吸铸有限公司 | A kind of valve of high temperature resistant, high reliability |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4548384A (en) * | 1983-12-15 | 1985-10-22 | Smith Valve Corporation | Top entry metal-seated ball valve |
| CN2279479Y (en) * | 1996-10-13 | 1998-04-22 | 邱卫新 | Small-calibre high temperature and high pressure stop valve |
| CN200986030Y (en) * | 2006-12-04 | 2007-12-05 | 江苏苏盐阀门机械有限公司 | Floating ball type lines sealing globe valve |
| CN101922562A (en) * | 2010-08-14 | 2010-12-22 | 江南机器（集团）有限公司 | Dual-piston pneumatic ball valve of compressed air bundling air cylinder |
| CN202971959U (en) * | 2012-12-23 | 2013-06-05 | 阮云 | Two-way high-pressure water pressure-regulating valve |
| CN202992242U (en) * | 2012-11-13 | 2013-06-12 | 河南泉舜流体控制科技有限公司 | Soft-and-hard double-seal discharging ball valve |
| CN203857075U (en) * | 2014-05-27 | 2014-10-01 | 浙江台益阀门有限公司 | Dual-seal ball valve |
| CN204213355U (en) * | 2014-10-29 | 2015-03-18 | 中材高新成都能源技术有限公司 | A kind of New Type of Cryogenic Ball Valve |
-
2014
- 2014-10-29 CN CN201410590252.4A patent/CN104329469A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4548384A (en) * | 1983-12-15 | 1985-10-22 | Smith Valve Corporation | Top entry metal-seated ball valve |
| CN2279479Y (en) * | 1996-10-13 | 1998-04-22 | 邱卫新 | Small-calibre high temperature and high pressure stop valve |
| CN200986030Y (en) * | 2006-12-04 | 2007-12-05 | 江苏苏盐阀门机械有限公司 | Floating ball type lines sealing globe valve |
| CN101922562A (en) * | 2010-08-14 | 2010-12-22 | 江南机器（集团）有限公司 | Dual-piston pneumatic ball valve of compressed air bundling air cylinder |
| CN202992242U (en) * | 2012-11-13 | 2013-06-12 | 河南泉舜流体控制科技有限公司 | Soft-and-hard double-seal discharging ball valve |
| CN202971959U (en) * | 2012-12-23 | 2013-06-05 | 阮云 | Two-way high-pressure water pressure-regulating valve |
| CN203857075U (en) * | 2014-05-27 | 2014-10-01 | 浙江台益阀门有限公司 | Dual-seal ball valve |
| CN204213355U (en) * | 2014-10-29 | 2015-03-18 | 中材高新成都能源技术有限公司 | A kind of New Type of Cryogenic Ball Valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747739A (en) * | 2015-03-30 | 2015-07-01 | 江苏神通阀门股份有限公司 | Instrument sampling valve capable of automatically updating sealing face |
| CN106838407A (en) * | 2016-12-29 | 2017-06-13 | 无锡刚正精密吸铸有限公司 | A kind of valve of high temperature resistant, high reliability |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |