CN201159314Y - High-performance full bore type safety valve - Google Patents
High-performance full bore type safety valve Download PDFInfo
- Publication number
- CN201159314Y CN201159314Y CNU2008200834836U CN200820083483U CN201159314Y CN 201159314 Y CN201159314 Y CN 201159314Y CN U2008200834836 U CNU2008200834836 U CN U2008200834836U CN 200820083483 U CN200820083483 U CN 200820083483U CN 201159314 Y CN201159314 Y CN 201159314Y
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- CN
- China
- Prior art keywords
- valve
- flap
- guide sleeve
- type safety
- bore type
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- 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
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- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The utility model relates to a high-property full-bore type safety valve, mainly comprising a valve body, a valve rod, a valve base and a signal feedback device, wherein the upper of the valve body is connected with a heat blanket shield, the valve base is provided with a nozzle, a lower boost ring is provided outside the valve base, a guide sleeve is provided in the valve body, an upper boost ring is provided outside the guide sleeve, a flap is provided in the guide sleeve, the lower of the flap is contacted with the valve base, the upper of the flap is provided with the valve rod, the valve rod is provided with the signal feedback device, and the top of the valve rod is connected with a spring. The high-property full-bore type safety valve has the advantages that the upper and lower boost rings not interfered each other can confirm the property indexes as the exhaustion and return and the like, and the utility model adopts the signal feedback device for signal emission to further improve the return property of the valve, adopts a pantographic nozzle structure of special design to confirm high lifting force and strong exhaustion ability of the safety valve, and adopts a thermal elastic flap to utilize the elastic structure of the seal couple to improve the seal pressure when the valve is sealed and closed, thereby realizing zero leakage of the seal at high temperature.
Description
Technical field
The utility model mainly applies to the supporting boiler of high-power machine master needs the pressure releasing means that is equipped with on drum and superheater, mainly be a kind of high-performance full-bore type safety valve manufactured.
Background technique
Because the R﹠D process of high-performance safety valve need be by a large amount of lift test, simulation test and full performance tests, these tests need be finished in the test room of specialty.Domestic owing to lack a series of test conditions and the professional technique talent, domestic for many years automatic class valve rests on lower level always.So the automatic class valve on significant points also depends on import at present.Because device often is in the bad working environments of High Temperature High Pressure, safe operation is difficult to assurance, and the loss of the energy is big, and the working life of valve is very short, and the performance index of whole process also are difficult to guarantee.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, and a kind of low energy consumption is provided, performance index height, the high-performance full-bore type safety valve manufactured that accuracy is stable.
The utility model solves the technological scheme that its technical problem adopts: this high-performance full-bore type safety valve manufactured, mainly comprise valve body, valve rod, valve seat and signal feed back device, described valve body top links to each other with heat-proof device, valve body lower portion is connected with valve seat, have nozzle on the valve seat, valve seat is provided with down the boosting ring outward, be provided with guide sleeve in the valve body, guide sleeve is provided with the boosting ring outward, flap is installed in the guide sleeve, and the flap bottom contacts with valve seat, and flap top is provided with valve rod, valve rod is provided with the signal feed back device, and the valve rod top links to each other with spring.
The surface of contact of described flap and valve seat forms a sealing surface.
Described nozzle is vase-shaped, and the top of nozzle is reducing, and the bottom is enlarging, and the middle part is a throat.
Described going up between boosting ring and the guide sleeve by being threaded; Between following boosting ring and the valve seat by being threaded.
The effect that the utility model is useful is: two non-interfering boosting rings up and down, guarantee the discharging of valve and return performance index such as seat, adopted the signal feed back device of discharging signal simultaneously, further heighten a performance index of returning of valve, adopt the contraction and enlargement nozzle structure of particular design, its nozzle entrance area is not less than 1.7 times reducing area, the enlarging diameter is not less than 1.15 times of throat diameter, discharge area is not less than 1.05 times circulation area, to guarantee that safety valve has higher lift and bigger discharge capacity, Coefficient of discharge is up to 0.975.Adopt the heating power Elastic valve clack, when valve is in sealing and opening state, utilize the elastic structure of sealing pair to increase seal pressure, realize the purpose of condition of high temperature sealing zero leakage.Utilize heat insulation and radiating principle, designed heat insulation and radiating structure at valve body and spring chamber place, make working medium when 540 ℃ of operating modes, spring housing's temperature is no more than 150 ℃, guarantees that the action of valve is stable.Adopt the feedback and the controlling device of discharging signal, further improved a performance index of returning of valve.
Description of drawings
Fig. 1 is a main TV structure schematic representation of the present utility model.
Description of reference numerals: spring 1, valve rod 2, heat-proof device 3, signal feed back device 4, guide sleeve 5, valve body 6, last boosting ring 7, flap 8, following boosting ring 9, nozzle 10, valve seat 11.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in the figure, this high-performance full-bore type safety valve manufactured, mainly comprise valve body 6, valve rod 2, valve seat 11 and signal feed back device 4, valve body 11 tops link to each other with heat-proof device 3, valve body 6 bottoms are connected with valve seat 11, have nozzle 10 on the valve seat 11, nozzle 10 is vase-shaped, the top of nozzle 10 is reducing, and the bottom is enlarging, and the middle part is a throat, the valve seat 11 outer boosting rings 9 that are provided with down, by being threaded, be provided with guide sleeve 5 in the valve body 6 between following boosting ring 9 and the valve seat 11, the guide sleeve 5 outer boosting rings 7 that are provided with, between last boosting ring 7 and the guide sleeve 5 by being threaded, flap 8 is installed in the guide sleeve 5, and flap 8 bottoms contact with valve seat 11, and flap 8 forms a sealing surface with the surface of contact of valve seat 11.Flap 8 tops are provided with valve rod 2, and valve rod 2 is provided with signal feed back device 4, and valve rod 2 tops link to each other with spring 1.
Safety valve is a kind of automatic valve.When pressure medium in the boilers and pressure vessel surpassed specified value, it was opened automatically; When its pressure medium is reduced to certain numerical value, return seat again automatically.When valve is installed on the pressurized container, when protected system was in working pressure, safety valve cut out (sealing state).The spring force F that act on the flap 8 this moment is:
F＝pA+F0
In the formula: p---pressure medium, MPa
Effective compression area on A---the flap 8, mm2
F0---be the downward impacting force that flap 8 and flap 8 are compressed, N
The impacting force F0 of flap 8 on valve seat 11 sealing surfaces formed active force and reaction force in fact, calculates with the unit sealing area, is called specific pressure, is also referred to as seal pressure.Just can guarantee that under certain specific pressure valve closing member reaches essential sealing.
When protected system medium pressure raises when surpassing working pressure, specific pressure F0 reduces thereupon, when specific pressure little to a certain degree the time; medium begins to penetrate the sealing surface between flap 8 and the valve seat 11; sealing surface forms the leakage of pettiness, and when specific pressure F0 was zero, valve was in unlatching.Along with the further rising of pressure medium, flap 8 promptly breaks away from valve seat 11 and upwards rises, discharging then.When system media pressure was reduced to normal operating pressure after discharging, valve was closed under the effect of spring force F again, i.e. safety valve blowback.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1, a kind of high-performance full-bore type safety valve manufactured, mainly comprise valve body (6), valve rod (2), valve seat (11) and signal feed back device (4), it is characterized in that: described valve body (6) top links to each other with heat-proof device (3), valve body (6) bottom is connected with valve seat (11), have nozzle (10) on the valve seat (11), the outer boosting ring (9) that is provided with down of valve seat (11), be provided with guide sleeve (5) in the valve body (6), the outer boosting ring (7) that is provided with of guide sleeve (5), flap (8) is installed in the guide sleeve (5), flap (8) bottom contacts with valve seat (11), flap (8) top is provided with valve rod (2), valve rod (2) is provided with signal feed back device (4), and valve rod (2) top links to each other with spring (1).
2, high-performance full-bore type safety valve manufactured according to claim 1 is characterized in that: described nozzle (10) is for vase-shaped, and the top of nozzle (10) is reducing, and the bottom is enlarging, and the middle part is a throat.
3, high-performance full-bore type safety valve manufactured according to claim 1 is characterized in that: described flap (8) forms a sealing surface with the surface of contact of valve seat (11).
4, high-performance full-bore type safety valve manufactured according to claim 1 is characterized in that: described going up between boosting ring (7) and the guide sleeve (5) by being threaded; Between following boosting ring (9) and the valve seat (11) by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200834836U CN201159314Y (en) | 2008-02-22 | 2008-02-22 | High-performance full bore type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200834836U CN201159314Y (en) | 2008-02-22 | 2008-02-22 | High-performance full bore type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159314Y true CN201159314Y (en) | 2008-12-03 |
Family
ID=40109898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200834836U Expired - Lifetime CN201159314Y (en) | 2008-02-22 | 2008-02-22 | High-performance full bore type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159314Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482261A (en) * | 2014-12-08 | 2015-04-01 | 章华 | High-temperature and high-pressure spring safety valve with heat compensation and elastic compensation sealing surface |
| CN105889585A (en) * | 2016-06-08 | 2016-08-24 | 哈电集团哈尔滨电站阀门有限公司 | Novel full-bore type safety valve |
| CN106286910A (en) * | 2016-08-25 | 2017-01-04 | 湖北三江航天红峰控制有限公司 | A kind of angle check valve for high temperature and high pressure gas |
-
2008
- 2008-02-22 CN CNU2008200834836U patent/CN201159314Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482261A (en) * | 2014-12-08 | 2015-04-01 | 章华 | High-temperature and high-pressure spring safety valve with heat compensation and elastic compensation sealing surface |
| CN104482261B (en) * | 2014-12-08 | 2017-07-18 | 章华 | HTHP spring safety valve with thermal compensation and elastic compensating sealing surface |
| CN105889585A (en) * | 2016-06-08 | 2016-08-24 | 哈电集团哈尔滨电站阀门有限公司 | Novel full-bore type safety valve |
| CN106286910A (en) * | 2016-08-25 | 2017-01-04 | 湖北三江航天红峰控制有限公司 | A kind of angle check valve for high temperature and high pressure gas |
| CN106286910B (en) * | 2016-08-25 | 2019-03-05 | 湖北三江航天红峰控制有限公司 | A kind of angle check valve for high temperature and high pressure gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081203 |
|
| CX01 | Expiry of patent term |