CN203214990U - Pressure reducing valve for nuclear power water system - Google Patents
Pressure reducing valve for nuclear power water system Download PDFInfo
- Publication number
- CN203214990U CN203214990U CN 201320194907 CN201320194907U CN203214990U CN 203214990 U CN203214990 U CN 203214990U CN 201320194907 CN201320194907 CN 201320194907 CN 201320194907 U CN201320194907 U CN 201320194907U CN 203214990 U CN203214990 U CN 203214990U
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- nuclear power
- water system
- pressure
- 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
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to a pressure reducing valve for a nuclear power water system. The pressure reducing valve is characterized in that a piston cylinder is arranged in a valve body, a piston is arranged in the piston cylinder and connected with a valve rod, an auxiliary spring is arranged below a valve clack, and a main spring is arranged in a valve deck. According to the pressure reducing valve for the nuclear power water system, the feedback pressure inside a piston cavity and compression elastic force of the main spring above the piston are contrasted, the opening of the valve clack is controlled, and the pressure at an inlet/outlet is further controlled. Due to the fact that a piston structure is adopted in a feedback cavity, the pressure reducing valve is high in rigidity and strength, and longer in service life compared with a membrane; in addition, the piston can bear high pressure, and therefore the pressure reducing valve has a wider serviceable range; the auxiliary spring is additionally arranged below the valve clack, mitigates impact of flow, and enables the opening of the valve clack to be more smooth; a pressure gage device is integrated at the inlet/outlet of the valve body, so that differential pressure of the valve before and after is convenient to observe; through the implementation of the technology, the service life of the pressure reducing valve is prolonged greatly, the usability of the pressure reducing valve is improved, and the application range is expanded.
Description
Technical field
The utility model relates to the technical field of reduction valve, specifically a kind of reduction valve for the nuclear power water system.
Background technique
In the present existing structure of relief pressure valve, the pressure feedback chamber mainly is made of elastomer diaphragm, though cost is low, because the intensity of elastomer diaphragm is lower, can not bear the long keying frequency, and maintenance rate is higher; Can not bear high pressure, under the high pressure conditions, diaphragm can ftracture, so do not fit into the high pressure relief occasion.The lower support face of prior art flap does not have the damping spring setting, and this has influenced the stability of decompression action.Pressure-detecting device is not set on the prior art valve body, the pressure gauge of observation reduction valve generally is installed on the pressure piping before and after the reduction valve, has increased the workload of pipeline tapping, assembly welding, and observation is also inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of improved reduction valve for the nuclear power water system, it can overcome prior art and not fit into the high pressure relief occasion, flap does not have the damping spring setting, and this has influenced the stability that decompression is moved, and the some shortcomings of pressure-detecting device are not set.
To achieve these goals, the technical solution of the utility model is: a kind of reduction valve for the nuclear power water system, it mainly comprises valve body, the valve gap that links to each other with valve body, and being arranged on the interior valve rod of valve body, fixedly there is flap at the middle part of valve rod, it is characterized in that: be provided with piston cylinder in the valve body, the built-in piston of piston cylinder, piston links to each other with valve rod, and the flap below is provided with auxiliary spring, is provided with main spring in the valve gap.
During use, this new device compares by the compression elasticity of the feedback pressure in the piston cavity and piston top main spring, the aperture of control flap, and then control inlet and outlet pressure.Because feedback cavity adopts piston structure, good rigidly, the intensity height, not only working life longer with respect to barrier film, and piston can bear high pressure, using scope is wider; Piston is provided with line and contacts first seal ring, good sealing effect, and it is extremely low in contrast to the barrier film maintenance cost.Auxiliary spring has been set up in flap below, and no spring result in the prior art has relaxed the impact of flow, and the unlatching of flap is more steady.Imported and exported pressure meter device integrated at valve body, changed that this type of valve does not have manometric present situation in the prior art, thereby reduced the pipeline mounting cost, pressure reduction is also comparatively convenient before and after the inspecting valve.By the enforcement of above technology, increase the working life of reduction valve greatly, improved the usability of reduction valve, enlarged application area.
Description of drawings
Fig. 1 is the utility model one embodiment's structural representation.
Embodiment:
The utility model will be further described below in conjunction with drawings and Examples.
In the accompanying drawing, the mark that each label is represented is as follows: 1 gland, 2 valve bodies, 3 auxiliary springs, 4 flaps, 5 valve rods, 6 first seal rings, 7 second seal rings, 8 tetrafluoro packing rings, 9 piston cylinders, 10 pistons, 11 pressure meter devices, 12 main springs, 13 valve gaps.
The utility model mainly comprises valve body, the valve gap that links to each other with valve body, and be arranged on valve rod in the valve body, fixedly there is flap at the middle part of valve rod, it is characterized in that: be provided with piston cylinder in the valve body, the built-in piston of piston cylinder, piston links to each other with valve rod, and the flap below is provided with auxiliary spring, is provided with main spring in the valve gap.The bottom of valve body is provided with gland, and auxiliary spring is arranged between flap and the gland, and gland arranges the stem guiding hole, and pilot hole has exhaust port on the limit.The main spring top has spring seat, main spring to be flexibly set between spring seat and the piston.Valve body is provided with inlet/outlet, and described outlet is arranged on the outlet plenum place, and outlet plenum is provided with the pressure feedback hole, and the outside of inlet/outlet is provided with pressure meter device.Be provided with first seal ring between piston and the piston cylinder, described first seal ring is made of upper and lower pair of O RunddichtringO.Be provided with tetrafluoro packing ring and second seal ring between piston cylinder and the valve body, second seal ring adopts the O RunddichtringO.Described pressure meter device is made of copper tube joint, copper ball valve and pressure gauge.The valve gap top is provided with the plastics protecting cover of white by being threaded.
In implementation process, medium is by the valve body 1 entrance point flap 4 of flowing through, flow out through outlet end, the part medium enters the below of piston 10 through the pressure feedback hole of valve body 2 outlet end, compression elasticity by the feedback pressure in the piston cavity and piston 10 top main springs 12 compares, the aperture of control flap, and then control inlet and outlet pressure.When outlet pressure raise, piston 10 below pressure moved on the piston greater than spring force, and flap 4 apertures reduce, and outlet pressure reduces, and replied setting value; When outlet pressure descended, piston 10 below pressure were less than spring force, and piston moves down, and flap 4 apertures increase, and outlet pressure raises, and replied setting value.
In implementation process, because piston 10 processes by stainless steel metal, good rigidly, the intensity height has overcome that diaphragm can not bear high pressure in the prior art, opens the defective that frequency breakage easy to crack when high, decompression were lost efficacy.Piston 10 is provided with first seal ring, the O type circle that first seal ring is made for specific rubber EPDM, and O type circle good sealing effect, long service life in contrast to the prior art septation, and it is extremely low to change O type circle maintenance cost.
In implementation process, auxiliary spring 3 is placed in flap 4 belows, has relaxed the impact of flow, and the unlatching of flap 4 is more steady.The import and export of valve body 2 are integrated pressure meter device 11 has changed that this type of valve does not have manometric present situation in the prior art, not only makes the effect of easing stress of reduction valve intuitively as seen, and has reduced the pipeline mounting cost, has saved cost.
Claims (8)
1. reduction valve that is used for the nuclear power water system, it mainly comprises valve body, the valve gap that links to each other with valve body, and be arranged on valve rod in the valve body, fixedly there is flap at the middle part of valve rod, it is characterized in that: be provided with piston cylinder in the valve body, the built-in piston of piston cylinder, piston links to each other with valve rod, the flap below is provided with auxiliary spring, is provided with main spring in the valve gap.
2. a kind of reduction valve for the nuclear power water system according to claim 1, it is characterized in that: the bottom of valve body is provided with gland, and auxiliary spring is arranged between flap and the gland, and gland arranges the stem guiding hole, and pilot hole has exhaust port on the limit.
3. a kind of reduction valve for the nuclear power water system according to claim 1 is characterized in that: have spring seat, main spring to be flexibly set between spring seat and the piston above the main spring.
4. a kind of reduction valve for the nuclear power water system according to claim 1, it is characterized in that: valve body is provided with inlet/outlet, and described outlet is arranged on the outlet plenum place, and outlet plenum is provided with the pressure feedback hole, and the outside of inlet/outlet is provided with pressure meter device.
5. a kind of reduction valve for the nuclear power water system according to claim 1, it is characterized in that: be provided with first seal ring between piston and the piston cylinder, described first seal ring is made of upper and lower pair of O RunddichtringO.
6. a kind of reduction valve for the nuclear power water system according to claim 1 is characterized in that: be provided with tetrafluoro packing ring and second seal ring between piston cylinder and the valve body, second seal ring employing O RunddichtringO.
7. a kind of reduction valve for the nuclear power water system according to claim 4, it is characterized in that: described pressure meter device is made of copper tube joint, copper ball valve and pressure gauge.
8. a kind of reduction valve for the nuclear power water system according to claim 1 is characterized in that: the plastics protecting cover that is provided with white above the valve gap by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194907 CN203214990U (en) | 2013-04-18 | 2013-04-18 | Pressure reducing valve for nuclear power water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194907 CN203214990U (en) | 2013-04-18 | 2013-04-18 | Pressure reducing valve for nuclear power water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214990U true CN203214990U (en) | 2013-09-25 |
Family
ID=49204529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320194907 Expired - Lifetime CN203214990U (en) | 2013-04-18 | 2013-04-18 | Pressure reducing valve for nuclear power water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214990U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925405A (en) * | 2014-05-07 | 2014-07-16 | 西安交通大学 | Piston-type pneumatic proportional pressure reducing valve of ball screw driven by servo motor directly |
| CN104696555A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | A high-pressure high-flow helium relief valve |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | Pressure adjuster |
| CN108506544A (en) * | 2018-04-26 | 2018-09-07 | 中煤科工集团重庆研究院有限公司 | Pressure-adjustable high-pressure water pressure-reducing valve |
| CN108644397A (en) * | 2018-08-08 | 2018-10-12 | 百强阀门集团有限公司 | Depressurize shut-off valve |
| CN108799583A (en) * | 2018-08-27 | 2018-11-13 | 成都川力智能流体设备股份有限公司 | A kind of pressure reducing valve feedback gas balancer |
| CN108799582A (en) * | 2018-08-30 | 2018-11-13 | 上海艾维科阀门股份有限公司 | Compound pressure reducing valve |
-
2013
- 2013-04-18 CN CN 201320194907 patent/CN203214990U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696555A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | A high-pressure high-flow helium relief valve |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | Pressure adjuster |
| CN104696557B (en) * | 2013-12-04 | 2017-03-01 | 上海宇航系统工程研究所 | A kind of pressure regulator |
| CN103925405A (en) * | 2014-05-07 | 2014-07-16 | 西安交通大学 | Piston-type pneumatic proportional pressure reducing valve of ball screw driven by servo motor directly |
| CN108506544A (en) * | 2018-04-26 | 2018-09-07 | 中煤科工集团重庆研究院有限公司 | Pressure-adjustable high-pressure water pressure-reducing valve |
| CN108506544B (en) * | 2018-04-26 | 2019-10-11 | 中煤科工集团重庆研究院有限公司 | Pressure-adjustable high-pressure water pressure-reducing valve |
| CN108644397A (en) * | 2018-08-08 | 2018-10-12 | 百强阀门集团有限公司 | Depressurize shut-off valve |
| CN108799583A (en) * | 2018-08-27 | 2018-11-13 | 成都川力智能流体设备股份有限公司 | A kind of pressure reducing valve feedback gas balancer |
| CN108799583B (en) * | 2018-08-27 | 2024-02-13 | 成都川力智能流体设备股份有限公司 | Pressure reducing valve feedback gas balancer |
| CN108799582A (en) * | 2018-08-30 | 2018-11-13 | 上海艾维科阀门股份有限公司 | Compound pressure reducing valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203214990U (en) | Pressure reducing valve for nuclear power water system | |
| CN204327607U (en) | A kind of piston accumulator | |
| CN204942747U (en) | Reduction valve eliminated by the water hammer being applied to water purifier | |
| CN202972300U (en) | Ultrahigh pressure detachable cone sealing pressure-measuring connector | |
| CN215488342U (en) | Water hammer eliminating device of secondary water supply equipment | |
| CN202432032U (en) | Swing check valve | |
| CN204628669U (en) | A kind of U-shaped pin quick-acting type reduction valve | |
| CN209568485U (en) | A kind of underwater construction equipment boost compensator and two-wheel flute milling machine | |
| CN202349210U (en) | Ultrahigh-pressure hydraulic cylinder with sealing clearance-adjusting structure | |
| CN208234447U (en) | A kind of high-precision is intermittently welded formula hydraulic jack | |
| CN207796381U (en) | A kind of external pressure self-adjusting seal compensator | |
| CN218992487U (en) | Hydraulic control valve | |
| CN103712021A (en) | Plugging pipe saddle | |
| CN205047348U (en) | Upwards straight line stimulates acting energy converter | |
| CN204977184U (en) | Vertical vulcanizing tank | |
| CN213655308U (en) | Vacuum exhaust valve reaches cubic apparatus press including it | |
| CN203743109U (en) | Pressure gauge switch | |
| CN203868588U (en) | Pipeline leakage detecting sealing device | |
| CN201440105U (en) | Leakage tester of correction leakage instrument | |
| CN219263545U (en) | Piston type water hammer eliminator | |
| CN208778842U (en) | A kind of adjustable sealing shroud for bottle placer | |
| CN220566227U (en) | Valve ball seat for pneumatic diaphragm pump and pneumatic diaphragm pump | |
| CN203009899U (en) | All-welded ball valve | |
| CN203421490U (en) | Compressed air system | |
| CN220551544U (en) | Mechanical overflow valve |
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: 201799 No. 199 Qing Road, Shanghai Industrial Zone, Qingpu Patentee after: SHANGHAI IVCO VALVE CO.,LTD. Address before: 201706 Shanghai city Qingpu district Song Ying Road No. 1205 Patentee before: SHANGHAI AIWEIKE VALVE MANUFACTURING Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |