CN203686218U - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN203686218U CN203686218U CN201320875166.9U CN201320875166U CN203686218U CN 203686218 U CN203686218 U CN 203686218U CN 201320875166 U CN201320875166 U CN 201320875166U CN 203686218 U CN203686218 U CN 203686218U
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- CN
- China
- Prior art keywords
- valve
- valve seat
- pipeline
- spool
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims description 6
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Taps Or Cocks (AREA)
- Safety Valves (AREA)
Abstract
The utility model relates to a ball valve which comprises a valve body, a valve element, valve seats and pressure relief structures, wherein the valve body is provided with a first pipeline, a valve cavity and a second pipeline in sequence; the valve element is arranged inside the valve body in a vertical movable way; the valve element comprises a first end, a second end and a runner which is formed between the first end and the second end; a middle cavity is formed between the second end of the valve element and the bottom wall of the valve cavity; the valve seats are arranged in the middle cavity and are located between the valve element and the valve body; the pressure relief structures are arranged on the valve seats; under the condition that the sealing of the middle cavity between the valve element and the valve seats is under the pressure effect of the middle cavity, and the pressure of the middle cavity exceeds a preset pressure, the middle cavity is communicated with the first pipeline or the second pipeline by the pressure relief structures. When the pressure in the middle cavity goes up due to the rise of the temperature, under the effect of the pressure of the middle cavity, the sealing between the valve element and the valve seats is pushed away, pressure relief channels on the valve seats are opened, a medium in the middle cavity enters the first pipeline or the second pipeline by the pressure relief channels, and thus the safety of the valve is ensured.
Description
Technical field
The utility model relates to valve field, particularly relates to a kind of ball valve.
Background technique
Along with the development of oil, Gas Industry, particularly LNG Liquefied natural gas (LNG) have feature inflammable, explosive, that temperature rising pressure can sharply rise, sealing, safety life to valve require more and more higher.
Further, prior art has the ball valve that adopts spheroid floating structure, single current.But in use for some time, its valve seat easily has leakage, valve rod easily abrades, jam, and the easy frozen damage of stem packing, can not meet the requirement of the two-way use of user, if with double fluid to, be difficult to again to solve the shortcomings such as situation that valve lumen boosts extremely.
Model utility content
The purpose of this utility model be to provide a kind of simple in structure, cost is low, can solve the ball valve that valve lumen boosts extremely.
For solving the problems of the technologies described above, as an aspect of the present utility model, provide a kind of ball valve, comprising: valve body, comprises the first pipeline, valve pocket and the second pipeline that set gradually; Spool can be arranged on the inside of valve body up and downly, spool comprise first end, the second end and be formed on first end and the second end between runner, between the second end of spool and the diapire of valve pocket, form lumen; Valve seat, is arranged in lumen, and valve seat is between spool and valve body; On valve seat, be provided with pressure relief, lumen is subject to the pressure of lumen in the sealing between spool and valve seat and exceedes predetermined pressure, by pressure relief and the first pipeline or the second pipeline connection.
Further, the sidewall of valve pocket is wedge-shaped structure, and wedge-shaped structure narrows to the direction of the second end of spool.
Further, ball valve also comprises: valve seat bracing ring, is enclosed within the outside of valve seat.
Further, the number of valve seat is two, and a valve seat is positioned at the side near the first pipeline of spool, and another valve seat is positioned at the side near the second pipeline of spool.
Further, valve seat comprises top and bottom, and pressure relief circumferentially arranges one week along valve seat, and valve seat also comprises the cone seal portion that is arranged on bottom.
Further, the outer ring of valve seat is formed with first step portion, and the inner ring of valve seat bracing ring is formed with and contacts the second step portion coordinating with first step portion.
Further, ball valve also comprises: locking device, the valve rod of ball valve connects.
Further, ball valve also comprises valve gap, is provided with dish spring on the connecting bolt of valve gap and valve body.
Further, ball valve also comprises valve gap and valve rod, is disposed with gasket seal, stuffing box packing and seal ring between valve gap and valve rod, and the arranged outside of gasket seal has hold-down grid, on the installation double-screw bolt of hold-down grid, is provided with dish spring.
Further, spool also comprises the rotating shaft that is arranged on the second end, and one end of rotating shaft is connected with the second end, and the other end inserts the depressed part on the diapire that is positioned at valve pocket pivotly.
In the time that the pressure in lumen raises due to temperature, under the effect of the pressure of lumen, will push the sealing between spool and valve seat open, make pressure release passage on the valve seat state in opening.Like this, the medium in lumen just can enter the first pipeline or the second pipeline by pressure release passage, thereby has guaranteed the Security of valve, has feature simple in structure, cost is low.
Accompanying drawing explanation
Fig. 1 has schematically shown structural representation of the present utility model;
Fig. 2 has schematically shown the partial enlarged drawing of Fig. 1;
Fig. 3 has schematically shown the plan view of Fig. 1.
Reference character in figure: 1, valve body; 2, the first pipeline; 3, spool; 4, the second pipeline; 5, lumen; 6, valve seat; 7, valve seat bracing ring; 8, locking device; 9, dish spring; 10, valve gap; 11, dish spring; 12, valve rod; 13, gasket seal; 14, stuffing box packing; 15, seal ring; 16, hold-down grid; 17, rotating shaft; 18, handle; 19, spring; 20, upper cover; 21, draining board.
Embodiment
Below embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Please refer to Fig. 1 to Fig. 3, the utility model provides a kind of ball valve, comprising: valve body 1, comprises the first pipeline 2, valve pocket and the second pipeline 4 that set gradually; Spool 3 can be arranged on the inside of valve body 1 up and downly, spool 3 comprise first end, the second end and be formed on first end and the second end between runner, between the second end of spool 3 and the diapire of valve pocket, form lumen 5; Valve seat 6, is arranged in lumen 5, and valve seat 6 is between spool 3 and valve body 1.On valve seat 6, be provided with pressure relief, the sealing of lumen 5 between spool 3 and valve seat 6 is subject to the pressure-acting of lumen 5 and exceedes predetermined pressure, is communicated with the first pipeline 2 or the second pipeline 4 by pressure relief.Preferably, valve seat 6 comprises top and bottom, and pressure relief circumferentially arranges one week along valve seat 6, and valve seat 6 also comprises the cone seal portion that is arranged on bottom.
Please refer to Fig. 2, in the time that the pressure in lumen 5 raises due to temperature, under the effect of the pressure of lumen 5, will push the sealing between spool 3 and valve seat 6 open, make pressure release passage on valve seat 6 state in opening.Like this, the medium in lumen 5 just can enter the first pipeline 2 or the second pipeline 4 by pressure release passage, thereby has guaranteed the Security of valve, has feature simple in structure, cost is low.
Preferably, please refer to Fig. 1, the sidewall of valve pocket is wedge-shaped structure, and wedge-shaped structure narrows to the direction of the second end of spool 3.Especially, the ball valve in the utility model also comprises spring 19, and it is arranged on the first end of spool 3, for an active force towards the second end is provided to spool 3.Under the effect providing at this spring 19 and under the acting in conjunction of this wedge-shaped structure, the contraction deformation to valve seat 6 when the low temperature compensates, thereby has guaranteed the sealing of valve.
Preferably, ball valve also comprises: valve seat bracing ring 7, is enclosed within the outside of valve seat 6.Preferably, the outer ring of valve seat 6 is formed with first step portion, and the inner ring of valve seat bracing ring 7 is formed with and contacts the second step portion coordinating with first step portion.By the cooperation of first step and second step portion, form the fire prevention step of the sealing function that catches fire, the Security that has improved valve.
Preferably, the number of valve seat 6 is two, and a valve seat 6 is positioned at the side near the first pipeline 2 of spool 3, and another valve seat 6 is positioned at the side near the second pipeline 4 of spool 3.
Preferably, ball valve also comprises: locking device 8, the valve rod 12 of ball valve connects.Utilize locking device 8, can make valve in the situation that opening, closing, can Locked valve.
Preferably, ball valve also comprises valve gap 10 and valve rod 12, between valve gap 10 and valve rod 12, be disposed with gasket seal 13, stuffing box packing 14 and seal ring 15, and the arranged outside of gasket seal 13 there is hold-down grid 16, on the installation double-screw bolt of hold-down grid 16, be provided with dish spring 11.Like this, can realize sealing more reliably.
Preferably, ball valve also comprises valve gap 10, on the connecting bolt of valve gap 10 and valve body 1, is provided with dish spring 9.When valve is when in bad border of low temperature, micro-distortion occurs gasket seal 13, the force compensating of dish spring 9 this micro-distortion, guarantee the steady in a long-term sealing of gasket seal 13 in ultralow temperature situation.
Preferably, spool 3 also comprises the rotating shaft 17 that is arranged on the second end, and one end of rotating shaft 17 is connected with the second end, and the other end inserts the depressed part on the diapire that is positioned at valve pocket pivotly.
Preferably, valve rod 12 can adopt extension valve rod, and it is provided with upper and lower two bearings, to guarantee that valve rod 12 can not mend scratch, jam, thereby guarantees the keying light and flexible of valve.One end of valve rod 12 is provided with handle 18, by the rotation of handle 18, and the switching of operable valve door.
Preferably, on valve gap, be welded with the upper cover 20 of lengthening, like this, have good technology capability, in addition, also can draining board 21 be set upper covering, to protect stuffing box packing can not freezed by ultralow temperature medium, guaranteed the sealing of valve rod long-term stability in ultralow temperature situation.
The utility model be double fluid to ultralow temperature fixed valve, can automatically the release superpressure of lumen of its valve seat, makes valve safety, reliable.Lower sealing steady in a long-term in-196 ℃ of ultra-low temperature surroundings, inside and outside zero leakage, the switch light and flexible of being; Spool is all around fixed, and the sealing force of valve seat is not subject to the impact of pressure medium in pipeline, is that steering force keeps stable.
Spool is all around fixed, and therefore, spool can not increase with the pressure of pipeline internal medium the pressure of valve seat, makes the sealing force of spool and valve seat substantially constant, thereby keeps less steering force.Two valve seat constructions are just the same, so this model utility valve user is to unrestricted.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a ball valve, comprising:
Valve body (1), comprises the first pipeline (2), valve pocket and the second pipeline (4) that set gradually;
Spool (3), can be arranged on the inside of described valve body (1) up and downly, described spool (3) comprise first end, the second end and be formed on described first end and described the second end between runner, between the second end of described spool (3) and the diapire of described valve pocket, form lumen (5);
Valve seat (6), is arranged in described lumen (5), and described valve seat (6) is positioned between described spool (3) and described valve body (1);
It is characterized in that, described valve seat is provided with pressure relief on (6), the sealing of described lumen (5) between described spool (3) and described valve seat (6) is subject to the pressure-acting of described lumen (5) and exceedes predetermined pressure, is communicated with described the first pipeline (2) or described the second pipeline (4) by described pressure relief.
2. ball valve according to claim 1, is characterized in that, the sidewall of described valve pocket is wedge-shaped structure,
Described wedge-shaped structure narrows to the direction of the second end of described spool (3).
3. ball valve according to claim 2, is characterized in that, described ball valve also comprises:
Valve seat bracing ring (7), is enclosed within the outside of described valve seat (6).
4. ball valve according to claim 1, it is characterized in that, the number of described valve seat (6) is two, a described valve seat (6) is positioned at a side of close described first pipeline (2) of described spool (3), and valve seat described in another (6) is positioned at a side of close described second pipeline (4) of described spool (3).
5. ball valve according to claim 1, is characterized in that, described valve seat (6) comprises top and bottom,
Described pressure relief circumferentially arranges one week along described valve seat (6), and described valve seat (6) also comprises the cone seal portion that is arranged on described bottom.
6. ball valve according to claim 3, is characterized in that, the outer ring of described valve seat (6) is formed with first step portion, and the inner ring of described valve seat bracing ring (7) is formed with described first step portion and contacts the second step portion coordinating.
7. ball valve according to claim 1, is characterized in that, described ball valve also comprises:
Locking device (8), the valve rod (12) of described ball valve connects.
8. ball valve according to claim 1, is characterized in that, described ball valve also comprises valve gap (10), on the connecting bolt of described valve gap (10) and described valve body (1), is provided with dish spring (9).
9. ball valve according to claim 1, it is characterized in that, described ball valve also comprises valve gap (10) and valve rod (12), between described valve gap (10) and described valve rod (12), be disposed with gasket seal (13), stuffing box packing (14) and seal ring (15), and the arranged outside of described gasket seal (13) has hold-down grid (16), on the installation double-screw bolt of described hold-down grid (16), be provided with dish spring (11).
10. ball valve according to claim 1, it is characterized in that, described spool (3) also comprises the rotating shaft (17) that is arranged on described the second end, and one end of described rotating shaft (17) is connected with described the second end, and the other end inserts the depressed part on the diapire that is positioned at described valve pocket pivotly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875166.9U CN203686218U (en) | 2013-12-26 | 2013-12-26 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875166.9U CN203686218U (en) | 2013-12-26 | 2013-12-26 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686218U true CN203686218U (en) | 2014-07-02 |
Family
ID=51008118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875166.9U Expired - Lifetime CN203686218U (en) | 2013-12-26 | 2013-12-26 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686218U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821961A (en) * | 2013-12-26 | 2014-05-28 | 方正阀门集团有限公司 | Ball valve |
| CN114517753A (en) * | 2022-02-16 | 2022-05-20 | 一汽解放汽车有限公司 | Switch valve |
| CN114517752A (en) * | 2022-02-16 | 2022-05-20 | 一汽解放汽车有限公司 | Switch valve and oil supply system |
-
2013
- 2013-12-26 CN CN201320875166.9U patent/CN203686218U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821961A (en) * | 2013-12-26 | 2014-05-28 | 方正阀门集团有限公司 | Ball valve |
| CN114517753A (en) * | 2022-02-16 | 2022-05-20 | 一汽解放汽车有限公司 | Switch valve |
| CN114517752A (en) * | 2022-02-16 | 2022-05-20 | 一汽解放汽车有限公司 | Switch valve and oil supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 no.1921 Binhai 1st Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Founder Valve Group Co.,Ltd. Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and village Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |