CN103453172A - Valve for reactor core neutron fluence rate measuring system - Google Patents
Valve for reactor core neutron fluence rate measuring system Download PDFInfo
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- CN103453172A CN103453172A CN2012101677994A CN201210167799A CN103453172A CN 103453172 A CN103453172 A CN 103453172A CN 2012101677994 A CN2012101677994 A CN 2012101677994A CN 201210167799 A CN201210167799 A CN 201210167799A CN 103453172 A CN103453172 A CN 103453172A
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- valve
- reactor core
- measuring system
- rate measuring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention belongs to a nuclear safety level ball valve for a reactor core neutron fluence rate measuring system. The valve for the reactor core neutron fluence rate measuring system comprises a valve body, wherein a ball body is arranged in a cavity of the valve body, a flexible valve seat is arranged outside the ball body and arranged in a valve seat, the valve seat is provided with a groove, and an O-shaped ring and a retainer ring are arranged in the groove. A disc spring is arranged outside the valve seat, the outer side of the disc spring is provided with a side cover, the side cover is fixedly connected with the valve body, the upper end of the ball body is provided with a valve rod, and an O-shaped ring and a retainer ring are arranged on the valve body between the valve rod and the valve body. A cylindrical boss of the valve rod is provided with a groove, a thrust washer is arranged in the groove, a guiding ring is arranged at the upper end of the valve rod, and a support cover is sleeved outside the guiding ring. The valve for the reactor core neutron fluence rate measuring system has the advantages that the valve body is a double-body type floating nuclear power ball valve, the valve rigidity is good, the anti-vibration performance is excellent, the service life is long, installation and maintenance are convenient, and the valve is suitable for the reactor core neutron fluence rate measuring system.
Description
Technical field
The invention belongs to a kind of valve mechanism, be specifically related to a kind of nuclear safe level ball valve for reactor core neutron fluence rate measuring system.
Background technique
Reactor core neutron measurement system is an important component part of power station detection system, and the neutron fluence rate that it mainly measures reactor core distributes, the distortion of monitoring core power, and accumulation burnup data, be one of key equipment of nuclear power station.In built pressurized-water reactor nuclear power plant, this equipment relies on import for a long time at home.Manually operated valve, mortor operated valve belong to C3C4 reactor core neutron and annotate the measuring system critical valves, and technical requirements is tight, safety coefficient is high, and domestic still do not possess design, manufacturing capacity.
Summary of the invention
The reactor core neutron fluence rate measuring system valve that the purpose of this invention is to provide a kind of superior performance, compact structure, good seal performance.
The present invention realizes like this, a kind of reactor core neutron fluence rate measuring system valve, it comprises valve body, be provided with spheroid in the cavity of valve body, spheroid is provided with soft valve seat outward, soft valve seat is located in valve seat, have groove on valve seat, and be provided with O shape circle and back-up ring in groove, the outside of valve seat is provided with the dish spring, the outside of dish spring is side cover, side cover is fixedly connected with valve body, the upper end of spheroid is provided with valve rod, be provided with O shape circle and back-up ring between valve rod and valve body on valve body, have groove on the cylindrical boss of valve rod, be provided with thrust pad in groove, the upper end of valve rod is provided with guide ring, guide ring is arranged with supporting cover outward.
Described supporting cover is located on valve seat, and the upper end portion of valve rod is connected with handle set, and a side of handle set has through hole, be provided with spring in through hole, spring housing is on locating stud, and locating stud is connected with supporting cover, locating stud is provided with nut, and the opposite side of handle set is fixed with pull bar.
Described supporting cover upper end has been bolted Denso.
The joint of described valve body side is equipped with gasket seal.
Advantage of the present invention is, valve body is the double-body bike nuclear power ball valve that floats, the valve good rigidly, and excellent earthquake resistance, long service life, convenient for installation and maintenance, be applicable to the reactor core neutron and annotate measuring system.
The accompanying drawing explanation
Fig. 1 is a kind of reactor core neutron fluence rate measuring system valve schematic diagram provided by the present invention;
Fig. 2 is the movable valve stand structure that the dish spring loads;
Fig. 3 is a kind of reactor core neutron fluence rate measuring system mortor operated valve schematic diagram.
In figure, 1 valve body, 2 spheroids, 3 soft valve seats, 4 valve seats, 5O shape circle, 6 back-up rings, 7 dish springs, 8 side covers, 9O shape circle, 10 back-up rings, 11 thrust pads, 12O shape circle, 13 pads, 14 valve rods, 15 screws, 16 supporting covers, 17 guide rings, 18 handle sets, 19 screws, 20 locating studs, 21 nuts, 22 springs, 23 pads, 24 pull bars, 28 bolts, 29 Densos, 30 gasket seals.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
The present invention includes following main structure: 1) valve body is the solid forging structure, has guaranteed anti-seismic performance, reduces leakage point.2) full-bore design, have the characteristics such as flow is sufficient, flow resistance is little, pressure surge is little, makes valve have good trafficability performance.3) multi-sealing structure has formed the sealing system at high reliability valve rod and lumen place.5) open and close rapidly electric actuator flexibly.
As shown in Figure 1, a kind of reactor core neutron fluence rate measuring system manually operated valve comprises the valve body 1 with cavity structure, be equipped with spheroid 2 in the cavity of valve body 1, be set with soft valve seat 3 outside spheroid 2, soft valve seat 3 is arranged in valve seat 4, have groove on valve seat 4, and O shape circle 5 and back-up ring 6 be installed in groove, the outer cover of valve seat 4 has dish spring 7, the outside of dish spring 7 is side cover 8, side cover 8 is fixedly connected with valve body 1, the upper end of spheroid 2 is connected with the valve rod 14 that has the cylinder boss structure in the middle of elongated rod shape, O shape circle 9 and back-up ring 10 are installed between valve rod 14 and valve body 1 on valve body 1, have groove on the cylindrical boss of valve rod 14, thrust pad 11 is installed in groove, valve rod 14 upper end cover guide ring 17 is arranged, between guide ring 17 and valve rod 14, pad 13 is installed, the outer supporting cover 16 that is set with of guide ring 17, supporting cover 16 is fixed on valve seat 1 by screw 15, the upper end portion of valve rod 14 is connected with handle set 18, one side of handle set 18 has through hole, be fixed with spring 22 in through hole, spring 22 is enclosed within on locating stud 20, locating stud 20 is connected with supporting cover 16, be fixed with nut 21 by screw 19 on locating stud 20, the opposite side of handle set 18 is fixed with pull bar 24.
As shown in Figure 3, a kind of reactor core neutron fluence rate measuring system mortor operated valve comprises the valve body 1 with cavity structure, be equipped with spheroid 2 in the cavity of valve body 1, be set with soft valve seat 3 outside spheroid 2, soft valve seat 3 is arranged in valve seat 4, have groove on valve seat 4, and O shape circle 5 and back-up ring 6 be installed in groove, the outer cover of valve seat 4 has dish spring 7, the outside of dish spring 7 is side cover 8, side cover 8 is fixedly connected with valve body 1, the upper end of spheroid 2 is connected with the valve rod 14 that has the cylinder boss structure in the middle of elongated rod shape, thrust pad 11 is installed between valve rod 14 and valve body 1 on valve body 1, have groove on the cylindrical boss of valve rod 14, O shape circle 12 is installed in groove, valve rod 14 upper end cover guide ring 17 is arranged, between guide ring 17 and valve rod 14, pad 13 is installed, the outer supporting cover 16 that is set with of guide ring 17, supporting cover 16 upper ends are fixed with Denso 29 by bolt 28.The joint of valve body 1 side is equipped with gasket seal 30.
Body cavity passage in the present invention seamlessly transits, and has avoided fluid, by valve, larger disturbance occurs, and produces turbulent flow, increases flow resistance, thereby the pressure loss of valve is reduced as far as possible, makes valve have negotiability preferably.
Manually operated valve double-body bike all-welded structure, as Fig. 1, used welded structure between valve body and side cover, and with respect to the solid forging valve body, this structure has been saved valve body material greatly, has reduced the manufacture cost of model machine.The resistivity of pipe bending and extruding strengthened simultaneously.Owing to having cancelled valve flange and bolt, boundary dimension obviously reduces.
The integral type fire protection design, after preventing that soft seal was lost efficacy, leak in valve produces.Eliminated the potential passage that leaks outside, sealingly secure is reliable.
Upper dress formula stem structure.On pipeline, dismounting is rapidly simple, easy to maintenance quick.Break down on pipeline when valve rod while needing to repair, need only dismantle and compress the screw bolt and nut of valve rod, the valve rod group component is taken off together from valve body, the time has been saved in this maintenance, and the loss in producing is dropped to minimum point.
Multi-sealed, prevent valves leakage and leak outside.Spheroid 2, soft valve seat 3, valve seat 4, dish spring 7 have formed the main sealing of this valve.Soft valve seat adopts the PEEK(Chinese polyether-ether-ketone of function admirable) material is that PEEK is to metal sealing.PEEK has good self lubricity, friction factor is little, and stability in use is good.And these advantages are confirmed in other nuclear power valve designs of our factory.Between lumen valve stem seal, side cover and valve body, between valve seat and valve body, adopt respectively O type circle to be sealed, O type circle adopts fluorine rubber, and sealing is reliable.
As shown in Figure 2, the movable valve stand structure that the dish spring loads.By spheroid, soft valve seat, valve seat, dish spring, formed, different from the traditional soft seal floating ball valve on the other hand, its valve seat of traditional soft seal floating ball valve is fixed structure normally, spheroid floats, rely on medium power sealing (being the more high more easily sealing of pressure), easily like this cause between valve seat and spheroid easily occurring jam or obscission.And the movable valve stand structure that the dish spring loads can provide the required initial specific pressure of sealing, be convenient to install, prevent valve seat and the problems such as spheroid jam or disengaging, sealing is reliable, long service life.
Stem material is used high-intensity precipitation hardening steel 17-4PH instead; For reducing the friction torque of lumen valve rod and pad, the gasket seal at valve rod place is changed to seal with O ring, pad only plays the thrust effect and does not seal.
The material of valve body, valve gap adopts SA-A182M F304L/F316L; The material of spheroid adopts SA-A182M F304L/F316L; Stem material adopts SA-705M 630 (17-4PH), other component material selection the decay resistance material suitable with valve body material, meet the demands.
O type circle adopts the Kalrez FFKM; Valve seat, bearing adopt PEEK.
Claims (4)
1. a reactor core neutron fluence rate measuring system valve, it is characterized in that: it comprises valve body (1), be provided with spheroid (2) in the cavity of valve body (1), the outer soft valve seat (3) that is provided with of spheroid (2), soft valve seat (3) is located in valve seat (4), valve seat has groove on (4), and be provided with O shape circle (5) and back-up ring 6(in groove), the outside of valve seat (4) is provided with dish spring (7), the outside of dish spring (7) is side cover (8), side cover (8) is fixedly connected with valve body (1), the upper end of spheroid (2) is provided with valve rod (14), be provided with O shape circle (9) and back-up ring (10) between valve rod (14) and valve body (1) on valve body (1), have groove on the cylindrical boss of valve rod (14), be provided with thrust pad (11) in groove, the upper end of valve rod (14) is provided with guide ring (17), the outer supporting cover (16) that is arranged with of guide ring (17).
2. a kind of reactor core neutron fluence rate measuring system valve as claimed in claim 1, it is characterized in that: described supporting cover (16) is located on valve seat (1), the upper end portion of valve rod (14) is connected with handle set (18), one side of handle set (18) has through hole, be provided with spring (22) in through hole, spring (22) is enclosed within on locating stud (25), locating stud (20) is connected with supporting cover (16), locating stud (20) is provided with nut (21), and the opposite side of handle set (18) is fixed with pull bar (24).
3. a kind of reactor core neutron fluence rate measuring system valve as claimed in claim 1, it is characterized in that: described supporting cover (16) upper end is fixed with Denso (29) by bolt (28).
4. a kind of reactor core neutron fluence rate measuring system valve as claimed in claim 3, it is characterized in that: the joint of described valve body (1) side is equipped with gasket seal (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101677994A CN103453172A (en) | 2012-05-28 | 2012-05-28 | Valve for reactor core neutron fluence rate measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101677994A CN103453172A (en) | 2012-05-28 | 2012-05-28 | Valve for reactor core neutron fluence rate measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103453172A true CN103453172A (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101677994A Pending CN103453172A (en) | 2012-05-28 | 2012-05-28 | Valve for reactor core neutron fluence rate measuring system |
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| CN (1) | CN103453172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863887A (en) * | 2021-09-22 | 2021-12-31 | 北京捷杰西石油设备有限公司 | IBOP for top drive |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460012A (en) * | 1980-02-22 | 1984-07-17 | Jgc Corporation | Cartridge-type valve |
| US4658978A (en) * | 1985-06-24 | 1987-04-21 | Nippon Ball Valve Co., Ltd. | Top entry ball valve and a clamp therefor |
| CN2893343Y (en) * | 2006-01-10 | 2007-04-25 | 金克雨 | Whole-welding forged steel ball valve |
| CN201126035Y (en) * | 2007-11-15 | 2008-10-01 | 江苏神通阀门股份有限公司 | Nuclear safe level pneumatic ball valve |
| CN101893109A (en) * | 2009-05-19 | 2010-11-24 | 中核苏阀科技实业股份有限公司 | Top loaded pneumatic ball valve |
| CN201916540U (en) * | 2010-12-13 | 2011-08-03 | 浙江欧拉姆阀门科技有限公司 | Hard-seal three-way ball valve |
| CN202812272U (en) * | 2012-05-28 | 2013-03-20 | 中核苏阀科技实业股份有限公司 | Valve used for reactor core neutron fluence rate measurement system |
-
2012
- 2012-05-28 CN CN2012101677994A patent/CN103453172A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460012A (en) * | 1980-02-22 | 1984-07-17 | Jgc Corporation | Cartridge-type valve |
| US4658978A (en) * | 1985-06-24 | 1987-04-21 | Nippon Ball Valve Co., Ltd. | Top entry ball valve and a clamp therefor |
| CN2893343Y (en) * | 2006-01-10 | 2007-04-25 | 金克雨 | Whole-welding forged steel ball valve |
| CN201126035Y (en) * | 2007-11-15 | 2008-10-01 | 江苏神通阀门股份有限公司 | Nuclear safe level pneumatic ball valve |
| CN101893109A (en) * | 2009-05-19 | 2010-11-24 | 中核苏阀科技实业股份有限公司 | Top loaded pneumatic ball valve |
| CN201916540U (en) * | 2010-12-13 | 2011-08-03 | 浙江欧拉姆阀门科技有限公司 | Hard-seal three-way ball valve |
| CN202812272U (en) * | 2012-05-28 | 2013-03-20 | 中核苏阀科技实业股份有限公司 | Valve used for reactor core neutron fluence rate measurement system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863887A (en) * | 2021-09-22 | 2021-12-31 | 北京捷杰西石油设备有限公司 | IBOP for top drive |
| CN113863887B (en) * | 2021-09-22 | 2023-10-13 | 北京捷杰西石油设备有限公司 | IBOP for top drive |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |