CN102226484A - On-line monitoring device for nuclear valve stem seal leakage - Google Patents
On-line monitoring device for nuclear valve stem seal leakage Download PDFInfo
- Publication number
- CN102226484A CN102226484A CN 201110089208 CN201110089208A CN102226484A CN 102226484 A CN102226484 A CN 102226484A CN 201110089208 CN201110089208 CN 201110089208 CN 201110089208 A CN201110089208 A CN 201110089208A CN 102226484 A CN102226484 A CN 102226484A
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- leakage
- valve
- circuit board
- valve stem
- intelligent
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 34
- 230000003750 conditioning effect Effects 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 3
- 239000003990 capacitor Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 239000004810 polytetrafluoroethylene Substances 0.000 claims 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 238000007599 discharging Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a detection method for dielectric leakage flow at a valve stem of a nuclear-grade valve. The on-line monitoring device for seal leakage at the valve stem of the nuclear-grade valve comprises a leakage-collecting drainage device and a leakage flow detection device. The leakage of the valve stem of the valve flows into a leakage measuring tube in the leakage flow detection device through the leakage-collecting drainage device, an intelligent circuit board in an intelligent signal processing circuit board can be used for measuring the time needed for the leakage liquid of the valve from the bottom of the leakage measuring tube up to the top of the leakage measuring tube through a liquid level detection sensor in the leakage measuring tube, so that the leaking speed of the leakage can be calculated and the information can be sent to a control room.
Description
Technical field
The present invention relates to the nuclear grade valve valve stem seal and reveal the apparatus and method of online detection, also be applicable to the on-line monitoring of the valve stem seal leakage of common valve.
Background technique
One loop (nuclear island) system of nuclear power station needs work under elevated pressures and temperature, and medium is to be with radioactive water, and intrasystem corollary equipment valve products has special and strict requirement.Nuclear grade valve requires to have more reliable seal approach to prevent to be with radioactive seepage under high-temperature and high-pressure conditions, befouling environment, harm people's health and lives.
Summary of the invention
The objective of the invention is dielectric leakage for on-line monitoring nuclear grade valve valve stem seal place.
Have its structural representation of nuclear grade valve that valve rod reveals on-Line Monitor Device as shown in Figure 1: nuclear grade valve is made up of sealing gland 12, valve rod upper sealing ring 4, liquid collecting ring 5, valve rod lower sealing ring 6, valve rod 8, valve body 9, valve plate 10, valve plate sealing 11, leakage flow detector 13 etc. on electric actuator 1, link press span 2, valve loam cake 7, the valve rod.The valve loam cake contains an outage 3.
The technical solution used in the present invention is:
The online leakage monitoring device of nuclear grade valve valve stem seal comprises that collection leaks drainage system and leakage flow detector.
Collection leaks drainage system as shown in Figure 2, adopts band to draw neglected loading and puts (pipe) formula double-layer seal filling-material structure, is made up of sealing clamp 12, valve rod upper sealing ring 4, liquid collecting ring 5, valve rod lower sealing ring 6, valve loam cake 7 etc. on coaxial valve rod 8, the valve rod.Valve rod upper sealing ring 4, valve rod lower sealing ring 6 are loaded by the moulding filler of tetrafluoro and rubber and so on and are formed.Sealing clamp 12, liquid collecting ring 5, valve loam cake 7 are by the stainless steel material manufacturing on valve rod 8, the valve rod.Liquid collecting ring 5 is the cross section is " worker " font shown in Fig. 6-1 annular solids, and its middle part is shown with some through holes as Fig. 6-2, prolongs circumference and evenly distributes.The valve loam cake contains an outage 3, its center and liquid collecting ring 5 each isoplanar, through hole center.Sealing clamp 12 is fixed on the valve loam cake 7 on the valve rod.After high-temperature high-pressure medium seals 11 gaps and valve rod lower sealing ring 6, valve rod 8 clearance leakages by valve plate, valve plate in the valve, assemble in the space that in valve rod upper sealing ring 4, valve rod 8, liquid collecting ring 5 and valve rod lower sealing ring 6, forms, deliver to leakage flow detector 13 by the outage 3 of some through holes in the middle part of liquid collecting ring 5 and valve loam cake then.
Leakage flow detector 13 is made up of leak-off connection 14, leakage sounding pipe 17,2 liquid level detecting sensors 15, solenoid valve 18, liquid-discharging tube 22, intelligent signal processing circuit boards 16 as shown in Figure 8.Leakage sounding pipe 17 is by the nonmetallic material manufacturing, upper end open, and the lower end is connected to the inlet of solenoid valve 18, and liquid-discharging tube 22 is received in the outlet of solenoid valve 18.Liquid level detecting sensor 15 is formed plate condenser by two size rectangle copper sheets 30 identical with thickness, each copper sheet surface coverage tetrafluoro and so on isolation layer 31, and respectively there is an insulated conductor to connect on it as the signal lighting outlet, leakage and air be as the medium between two copper sheets, and along with both ratio is different and change capacitance size.2 liquid level detecting sensors are separately fixed at the bottom and the top of leakage sounding pipe madial wall.Intelligent signal processing circuit board 16 is made up of conditioning circuit plate 19, solenoid valve control circuit plate 23, intelligent circuit board 20, the signal is far passed circuit board 21.The lead of drawing of liquid level detecting sensor 15 is connected to conditioning circuit plate 19,19 outputs of conditioning circuit plate are connected to intelligent circuit board 20, the output of intelligent circuit board 20 is connected to the signal is far passed circuit board 21, current signal or the radio frequency signal of the 4-20mA of the signal is far passed circuit board 21 outputs one standard.
The detecting method of the dielectric leakage flow at nuclear grade valve valve stem seal place is: the leakage liquid of valve rod leaks drainage system by collection and flow into leakage sounding pipe in the leakage flow detector, intelligent circuit board in the intelligent signal processing circuit board is at first closed solenoid valve, liquid level detecting sensor by leakage sounding pipe middle and lower part and top then, measure the bottom arrival top needed time of valve leakage from the leakage sounding pipe, calculate the leakage leakage rate thus, and this information remote transmitting is arrived the control room.After once calculating is finished, open solenoid valve, drained the leakage that accumulates in the leakage sounding pipe, restart to measure.
Description of drawings
Fig. 1 has the nuclear grade valve structural representation that valve rod is revealed on-Line Monitor Device in the embodiment of the invention;
Fig. 2 is that collection leaks the drainage system structural representation in the embodiment of the invention;
Fig. 3 is a valve superstructure schematic representation in the embodiment of the invention, and wherein last figure is a plan view, and figure below is a plan view;
Fig. 4 is a valve rod lower sealing ring structural representation in the embodiment of the invention.
Fig. 5 is a valve rod upper sealing ring structural representation in the embodiment of the invention.
Fig. 6 is a liquid collecting ring structure schematic representation in the embodiment of the invention: wherein Fig. 6-1 is a plan view, and Fig. 6-2 is a plan view;
Fig. 7 is a sealing clamp structural representation on the valve rod in the embodiment of the invention.
Fig. 8 is a leakage flow detector structural representation in the embodiment of the invention.
Liquid level detecting sensor structural representation in Fig. 9 embodiment of the invention;
Among the figure: 1. electric actuator, 2. link press span, 3. outage, 4. valve rod upper sealing ring, 5. liquid collecting ring, 6. valve rod lower sealing ring, 7. valve loam cake, 8. valve rod, 9. valve body, 10. valve plate, the sealing of 11. valve plates, sealing gland on 12. valve rods, 13. the leakage flow detector, 14. leak-off connections, 15. liquid level detecting sensors, 16 intelligent signal processing circuit boards, 17. the leakage sounding pipe, 18. solenoid valves, 19. conditioning circuit plates, 20. intelligent circuit board, 21. the signal is far passed circuit board, 22. liquid-discharging tubes, 23. solenoid valve control circuit plates, 30. the rectangle copper sheet, 31. tetrafluoros and so on isolation layer.
Embodiment
Shown in Fig. 2～7, collection leakage drainage system adopts band to draw neglected loading and puts (pipe) formula double-layer seal filling-material structure, be made up of sealing clamp 12, valve rod upper sealing ring 4, liquid collecting ring 5, valve rod lower sealing ring 6, valve loam cake 7 etc. on coaxial valve rod 8, the valve rod.
Shown in Fig. 8～9, the leakage flow detector is made up of leak-off connection 14, leakage sounding pipe 17,2 liquid level detecting sensors 15, solenoid valve 18, liquid-discharging tube 22, intelligent signal processing circuit boards 16.
Embodiment 1
Have its structural representation of nuclear level gate valve that valve rod reveals on-Line Monitor Device as shown in Figure 1: nuclear grade valve is made up of sealing gland 12, valve rod upper sealing ring 4, liquid collecting ring 5, valve rod lower sealing ring 6, valve rod 8, valve body 9, valve plate 10, valve plate sealing 11, leakage flow detector 13 etc. on electric actuator 1, link press span 2, valve loam cake 7, the valve rod.The valve loam cake contains an outage 3.Leakage flow detector 13 is made up of leak-off connection 14, leakage sounding pipe 17,2 liquid level detecting sensors 15, solenoid valve 18, liquid-discharging tube 22, intelligent signal processing circuit boards 16 as shown in Figure 8.Intelligent signal processing circuit board 16 is made up of conditioning circuit plate 19, solenoid valve control circuit plate 23, intelligent circuit board 20, the signal is far passed circuit board 21.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110089208 CN102226484B (en) | 2011-04-11 | 2011-04-11 | On-line monitoring device for seal leakage at valve stem of nuclear-grade valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110089208 CN102226484B (en) | 2011-04-11 | 2011-04-11 | On-line monitoring device for seal leakage at valve stem of nuclear-grade valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226484A true CN102226484A (en) | 2011-10-26 |
| CN102226484B CN102226484B (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110089208 Expired - Fee Related CN102226484B (en) | 2011-04-11 | 2011-04-11 | On-line monitoring device for seal leakage at valve stem of nuclear-grade valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102226484B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN104949811A (en) * | 2015-07-06 | 2015-09-30 | 江苏科技大学 | Sealing detecting device for stuffing box of diesel engine |
| CN105425842A (en) * | 2016-01-06 | 2016-03-23 | 北京化工大学 | Mechanical seal leakage rate online monitoring system |
| CN107829972A (en) * | 2017-09-06 | 2018-03-23 | 武汉船用机械有限责任公司 | A kind of Cargo Oil Pump |
| CN108087617A (en) * | 2017-11-14 | 2018-05-29 | 中国核电工程有限公司 | A kind of access lock dynamic sealing handwheel penetration piece |
| CN108922637A (en) * | 2018-07-25 | 2018-11-30 | 中广核研究院有限公司 | A kind of nuclear power station-service control rod drive mechanism |
| CN109441846A (en) * | 2018-10-23 | 2019-03-08 | 武汉船用机械有限责任公司 | A kind of immersed pump sealing monitoring device |
| CN109470466A (en) * | 2018-12-24 | 2019-03-15 | 河北工业大学 | A liquid level-time difference spray flow distribution test method |
| CN103836219B (en) * | 2014-02-18 | 2019-07-19 | 潘健 | Self-test sealing valve |
| CN110195799A (en) * | 2019-06-18 | 2019-09-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Valve stem seal monitors compensation and emergency set automatically |
| CN110689975A (en) * | 2019-09-26 | 2020-01-14 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN111609977A (en) * | 2020-05-20 | 2020-09-01 | 潍坊力创电子科技有限公司 | Fuel leakage alarm and implementation method thereof |
| CN112253859A (en) * | 2020-09-27 | 2021-01-22 | 中核核电运行管理有限公司 | A stress corrosion resistant primary circuit valve leakage pipe connecting device and method |
| CN113531200A (en) * | 2020-04-22 | 2021-10-22 | 宝武装备智能科技有限公司 | On-line valve state remote intelligent monitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972867A (en) * | 1989-11-03 | 1990-11-27 | Ruesch J O | Valve stem seal leak protection and detection apparatus |
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| CN101278180A (en) * | 2005-09-29 | 2008-10-01 | 罗斯蒙德公司 | Leak detector for process valve |
| JP2010159798A (en) * | 2009-01-07 | 2010-07-22 | Yamatake Corp | Leakage diagnosis device for control valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
-
2011
- 2011-04-11 CN CN 201110089208 patent/CN102226484B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972867A (en) * | 1989-11-03 | 1990-11-27 | Ruesch J O | Valve stem seal leak protection and detection apparatus |
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| CN101278180A (en) * | 2005-09-29 | 2008-10-01 | 罗斯蒙德公司 | Leak detector for process valve |
| JP2010159798A (en) * | 2009-01-07 | 2010-07-22 | Yamatake Corp | Leakage diagnosis device for control valve |
| CN101975279A (en) * | 2010-11-03 | 2011-02-16 | 淄博汇华阀业有限公司 | Early warning stop valve |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836219B (en) * | 2014-02-18 | 2019-07-19 | 潘健 | Self-test sealing valve |
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN104949811A (en) * | 2015-07-06 | 2015-09-30 | 江苏科技大学 | Sealing detecting device for stuffing box of diesel engine |
| CN104949811B (en) * | 2015-07-06 | 2018-03-06 | 江苏科技大学 | A kind of diesel engine packing box seal detection means |
| CN105425842A (en) * | 2016-01-06 | 2016-03-23 | 北京化工大学 | Mechanical seal leakage rate online monitoring system |
| CN105425842B (en) * | 2016-01-06 | 2017-12-29 | 北京化工大学 | A kind of mechanical seal leakage rate online monitoring system |
| CN107829972A (en) * | 2017-09-06 | 2018-03-23 | 武汉船用机械有限责任公司 | A kind of Cargo Oil Pump |
| CN107829972B (en) * | 2017-09-06 | 2019-11-08 | 武汉船用机械有限责任公司 | A kind of Cargo Oil Pump |
| CN108087617B (en) * | 2017-11-14 | 2020-11-17 | 中国核电工程有限公司 | Dynamic seal hand wheel penetrating piece for personnel gate |
| CN108087617A (en) * | 2017-11-14 | 2018-05-29 | 中国核电工程有限公司 | A kind of access lock dynamic sealing handwheel penetration piece |
| CN108922637A (en) * | 2018-07-25 | 2018-11-30 | 中广核研究院有限公司 | A kind of nuclear power station-service control rod drive mechanism |
| CN109441846B (en) * | 2018-10-23 | 2020-09-08 | 武汉船用机械有限责任公司 | Sealing monitoring device for immersed pump |
| CN109441846A (en) * | 2018-10-23 | 2019-03-08 | 武汉船用机械有限责任公司 | A kind of immersed pump sealing monitoring device |
| CN109470466A (en) * | 2018-12-24 | 2019-03-15 | 河北工业大学 | A liquid level-time difference spray flow distribution test method |
| CN110195799A (en) * | 2019-06-18 | 2019-09-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Valve stem seal monitors compensation and emergency set automatically |
| CN110195799B (en) * | 2019-06-18 | 2020-07-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Automatic monitoring compensation and emergency device for valve rod sealing |
| CN110689975A (en) * | 2019-09-26 | 2020-01-14 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN110689975B (en) * | 2019-09-26 | 2021-08-24 | 岭澳核电有限公司 | Nuclear power station nuclear island exhaust drainage system and leakage detection method |
| CN113531200A (en) * | 2020-04-22 | 2021-10-22 | 宝武装备智能科技有限公司 | On-line valve state remote intelligent monitor |
| CN113531200B (en) * | 2020-04-22 | 2023-08-25 | 宝武装备智能科技有限公司 | On-line valve state remote intelligent monitor |
| CN111609977A (en) * | 2020-05-20 | 2020-09-01 | 潍坊力创电子科技有限公司 | Fuel leakage alarm and implementation method thereof |
| CN112253859A (en) * | 2020-09-27 | 2021-01-22 | 中核核电运行管理有限公司 | A stress corrosion resistant primary circuit valve leakage pipe connecting device and method |
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| Publication number | Publication date |
|---|---|
| CN102226484B (en) | 2013-01-23 |
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Granted publication date: 20130123 Termination date: 20170411 |