CN205639838U - Pipeline valve gate and medium equipment of filler department thereof - Google Patents
Pipeline valve gate and medium equipment of filler department thereof Download PDFInfo
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- CN205639838U CN205639838U CN201620444960.1U CN201620444960U CN205639838U CN 205639838 U CN205639838 U CN 205639838U CN 201620444960 U CN201620444960 U CN 201620444960U CN 205639838 U CN205639838 U CN 205639838U
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- 239000000945 filler Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model relates to a pipeline valve gate and medium equipment of filler department thereof, medium detection device install and press leaking stoppage mouth department in the area of valve packing box, including leak testing module and leakage alarm module, wherein the leak testing module includes pressure sensor and fin heat abstractor, leak alarm module including the leakage processing module that is used for going on handling to medium leak signal and the control room server that is used for carrying on real time monitoring to medium leak signal, leakage processing module including the control module that is used for detection medium to let out leakage quantity value and the on -the -spot alarm device that is used for on -the -spot warning, the control room server include storage module, real time monitoring module and terminal alarm module. The utility model discloses can the real -time supervision valve dielectric leakage condition to in time report to the police and remind the staff, guarantee the safety and stability operation of valve, solve pipeline valve gate because of leaking became invalid the production operation difficulty that leads to and the problem of increase accident probability.
Description
Technical field
This utility model relates to pipeline valve, is specifically related to dielectric leakage detection dress at a kind of pipeline valve and filler thereof
Put.
Background technology
Valve is the important component part of pipeline, and the valve invalidation of key position can cause the difficulty of production operation, increasing
Add accident probability, run to safety in production and bring potential accident potential, and the topmost failure mode of valve is to let out
Leakage effect.
Economic loss that different leakage forms are caused and to the pollution level of environment again because of the difference of the characteristic of medium
Different.If gas medium, being then easy to diffusive transport in atmosphere, its pollution radius will be bigger.
The leakage of valve often occurs on filler, flange seal and valve body, and valve leaks for a long time and can cause valve rod and flange
The erosion of sealing surface, finally can make valve scrap, add the loss of medium fluid so that consumes and increases, on cost
Rising, economic benefit declines.If medium fluid is poisonous, inflammable, explosive, corrosivity etc. occurs external leakage, then hold
Easily be poisoned, fire, the casualty accident such as blast and accelerate the corrosion rate of plant and equipment, shorten its service life,
Polluting surrounding enviroment time serious, destroy power generation, infringement people's is healthy.The existence serious threat of leakage
Safety in production, make non-programmed halt accident increase.
The leakage of valve packing and reason: valve is during operating with, and valve rod is with also existing between filler relatively
Motion, it includes rotationally and axially moving.Along with the increase of on-off times, the number of times of relative motion increases the most therewith,
Also having temperature, the characteristic of pressure and fluid media (medium) etc. affects, and valve packing is the position being easiest to occur leakage.It
It is gradually weakening due to filler contact pressure, filler self aging, lose what the reasons such as elasticity caused, and
And pressure medium can leak out along the contact gap of filler with valve rod, partial filler can be blown away for a long time and incite somebody to action
Valve rod washes away groove, so that leakage extension.
At present, there is also serious technology for assay device and the test method of dielectric leakage detection at valve stem packing
Defect and blank.For ensureing valve safety in running, it is highly desirable to design a kind of detection valve valve
The equipment leaked at bar filler or instrument, the safe operation for valve provides safeguard.
Utility model content
The purpose of this utility model is to provide dielectric leakage detection device, this practicality at a kind of pipeline valve and filler thereof
Novel by arranging dielectric leakage detection device at valve packing, monitoring valve dielectric leakage situation in real time, and and
Alarm reminds staff, it is ensured that the safe and stable operation of valve, leads because of leakage failure in order to solve pipeline valve
The production operation difficulty caused and the problem increasing accident probability.
For achieving the above object, scheme of the present utility model is: dielectric leakage detection dress at a kind of pipeline valve filler
Putting, described detection device is arranged at the pressure sealing mouth of valve stuffing box, described dielectric leakage detection device bag
Including Leak Detection module and leakage alarm module, described Leak Detection module includes for detecting dielectric leakage signal
Pressure transducer and for leaking medium being carried out the fin heat abstractor of radiating and cooling；
Described leakage alarm module includes the leakage processing module for processing dielectric leakage signal and for right
The control room server that dielectric leakage signal monitors in real time, described leakage processing module includes for detecting Jie
Matter leaks the control module of value and is used for the onsite alarming device of onsite alarming, and described control room server includes
Memory module, real-time monitoring module and terminal alarms module；
Described fin heat abstractor is arranged at the pressure sealing mouth of stuffing-box, and described pressure transducer is arranged on
The tail end of fin heat abstractor, the signal output part link control module of described pressure transducer, described control module
Control output end connect onsite alarming device, the signal output part of described control module connects memory module, described
The data output end of memory module connects real-time monitoring module and terminal alarms module；
Described pressure transducer detects the dielectric leakage signal at pressure sealing mouth in real time, and is sent to control module,
When control module detects that dielectric leakage amount reaches setting value, send alarm signal and report to onsite alarming device
Alert；Meanwhile, control module real-time transmitting medium leakage rate to memory module, described real-time monitoring module and terminal report
Alert module reads the data in memory module in real time, and described real-time monitoring module monitors dielectric leakage situation in real time,
And when leakage rate reaches setting value, by terminal alarms module alert.
Further, according to dielectric leakage detection device at pipeline valve filler described in the utility model, described
Terminal alarms module includes the webpage alarm module for sending webpage alarm signal, for sending the micro-of wechat message
Believe alarm module, for sending the short message alarm module of SMS alarm signal and for calling the electricity of alarm signal
Telephone alarm module.
Further, according to dielectric leakage detection device at pipeline valve filler described in the utility model, described
Dielectric leakage detection device includes that intelligent terminal, described intelligent terminal are connected by the Internet with terminal alarms module,
Described intelligent terminal is smart machine.
Further, according to dielectric leakage detection device, described pressure at pipeline valve filler described in the utility model
Force transducer is threadedly attached in the tail end of fin heat abstractor.
Further, according to dielectric leakage detection device, described wing at pipeline valve filler described in the utility model
Sheet heat abstractor is by pipeline welding or is threadedly attached at the pressure sealing mouth of stuffing-box.
Further, according to dielectric leakage detection device at pipeline valve filler described in the utility model, described
Control room server is provided with size of current display screen and leakage rate display screen.
Further, according to dielectric leakage detection device at pipeline valve filler described in the utility model, described
Control module is single-chip microcomputer.
Further, according to dielectric leakage detection device at pipeline valve filler described in the utility model, described
Onsite alarming device is audible-visual annunciator.
The purpose of this utility model also resides in a kind of pipeline valve of offer, and described pipeline valve includes stuffing-box, institute
Stating and be provided with dielectric leakage detection device at the pressure sealing mouth of stuffing-box, described dielectric leakage detection device includes
Leak Detection module and leakage alarm module, described Leak Detection module includes for detecting dielectric leakage signal
Pressure transducer and for leaking medium being carried out the fin heat abstractor of radiating and cooling；
Described leakage alarm module includes the leakage processing module for processing dielectric leakage signal and for right
The control room server that dielectric leakage signal monitors in real time, described leakage processing module includes for detecting Jie
Matter leaks the control module of value and is used for the onsite alarming device of onsite alarming, and described control room server includes
Memory module, real-time monitoring module and terminal alarms module；
Described fin heat abstractor is arranged at the pressure sealing mouth of stuffing-box, and described pressure transducer is arranged on
The tail end of fin heat abstractor, the signal output part link control module of described pressure transducer, described control module
Control output end connect onsite alarming device, the signal output part of described control module connects memory module, described
The data output end of memory module connects real-time monitoring module and terminal alarms module；
Further, according to pipeline valve described in the utility model, described dielectric leakage detection device includes intelligence
Energy terminal, described intelligent terminal is connected by the Internet with terminal alarms module, and described intelligent terminal is smart machine.
The beneficial effect that this utility model reaches: this utility model can detect at valve rod filler fast and effectively
Dielectric leakage situation, it is possible to monitor in real time and determine the concrete leakage rate of medium, it is ensured that in valve running can
By property.And structure of the detecting device of the present utility model is simple, easy to operate, it is possible to achieve the real-time prison of dielectric leakage
Survey, it is ensured that valve safe and stable operation.
Pressure transducer used by this utility model is connected with fin, so pressure transducer is not by medium temperature
Impact, and be difficult to pollute, service life is long, decreases economic loss.
Accompanying drawing explanation
Fig. 1 is the structural representation that detection device is installed on valve；
Fig. 2 is described detection device and the schematic diagram of leakage warning device；
Fig. 3 is detection module and the schematic diagram of leakage alarm of described detection device；
Fig. 4 is the schematic diagram of leakage processing module；
Fig. 5 is the schematic diagram of control room server；
Fig. 6 is the schematic diagram that detection device is applied to stop valve.
In figure, 1 valve rod；2 pressing plates；3 glands；4 sealing rings；5 valve gaps；6 valve stem packings；7
The pressure sealing mouth of stuffing-box；8 bolts hole；9 nuts；10 pressure transducers；11 screws；12—
Welding gusset；13 fin heat abstractors；14 pipelines；15 pressure sensor signal output leads；16 leakages
Processing module；161 control modules；162 acoustic-optic alarms；17 leakage signals process output lead；18—
Size of current display screen；19 leakage rate display screens；20 light emission alarm devices；21 sounding alarm devices；22
Leak Detection module；23 leakage alarm modules；24 control room servers；241 real-time monitoring modulars；242
Memory module；243 telephone call modules；244 short message alarm module；245 wechat alarm modules；246
Webpage alarm module；25 intelligent terminal；26 stop valve entrance points；27 dielectric leakage detection devices；28
The stop valve port of export；29 stop valve clacks；30 stop valve valve gaps；31 stop valve pressing plates.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Detection device embodiment:
Detection device described in the utility model is arranged at the pressure sealing mouth of valve stuffing box, such as Fig. 1-Fig. 5 institute
Showing, described dielectric leakage detection device includes Leak Detection module and leakage alarm module, described Leak Detection
Module includes the pressure transducer for detecting dielectric leakage signal and for leaking medium carries out the wing of radiating and cooling
Sheet heat abstractor, described fin heat abstractor is fixed on inside detection device by welding gusset and screw, and
By Pipe installing at the pressure sealing mouth of stuffing-box, described pressure transducer uses helicitic texture, with fin
Heat abstractor is spirally connected, and is arranged on the tail end of fin heat abstractor.
Detection device of the present utility model is an obturator, and it stretches out pipeline and is connected with valve, pipeline another
End and fin heat abstractor connect, and when having dielectric leakage at valve stem packing, can first pass through fin heat abstractor, when
Leakage rate reaches certain value, and when i.e. pressure transducer output valve reaches setting value, leakage alarm module starts, thus
Realize the dielectric leakage at valve stem packing being detected and reporting to the police.
Described leakage alarm module includes the leakage processing module for processing dielectric leakage signal and for right
The control room server that dielectric leakage signal monitors in real time, it is on-the-spot that described leakage processing module is arranged on valve,
Described leakage processing module includes the control module for detecting dielectric leakage value and the scene for onsite alarming
Alarm device, described control room server includes memory module, real-time monitoring module and terminal alarms module,
Described control room server is additionally provided with size of current display screen and display Jie of display pressure transducer output signal
The leakage rate display screen of the concrete leakage rate of matter.
The signal output part link control module of described pressure transducer, the control output end of described control module connects
Onsite alarming device, the signal output part of described control module connects memory module, and the data of described memory module are defeated
Go out end and connect real-time monitoring module and terminal alarms module.Described control module uses Single-chip Controlling, and institute
The control module stated contains serial ports wireless module and realizes wireless communication function.
Described onsite alarming device is acoustic-optic alarm, including luminous alarm module and sounding alarm module.Institute
The terminal alarms module stated includes the webpage alarm module for sending webpage alarm signal, for sending wechat message
Wechat alarm module, for sending the short message alarm module of SMS alarm signal and be used for calling alarm signal
Telephone call module.
Described pressure transducer detects the dielectric leakage signal at pressure sealing mouth in real time, and is sent to control module,
When control module detects that dielectric leakage amount reaches setting value, send alarm signal and report to onsite alarming device
Alert；Meanwhile, control module real-time transmitting medium leakage rate to memory module, described real-time monitoring module and terminal report
Alert module reads the data in memory module in real time, and described real-time monitoring module monitors dielectric leakage situation in real time,
And when leakage rate reaches setting value, by terminal alarms module alert.
The detection device normalization relation between size of current and leakage rate of the present embodiment, leakage rate is according to having marked
Relation between fixed size of current and leakage rate determines, and this leakage value can be adjusted by program.
Pressure transducer output signal is current signal, and size of current is 4～20mA.
The dielectric leakage detection device of the present embodiment also includes intelligent terminal, described intelligent terminal and terminal alarms module
Being connected by the Internet, described intelligent terminal is used for receiving the dielectric leakage situation that control room server is monitored in real time,
Intelligent terminal can be all smart machines.
As shown in Figure 6, the dielectric leakage detection device of the present embodiment is applied when using on stop valve, stop valve valve
Lobe remains off, and pressurizes at the stop valve port of export.Now, valve stem packing pressurized.Stop valve outlet pressures
Time less, dielectric leakage detection device pressure transducer output signal value at about 4mA, not up to leakage alarm
Setting value；Stop valve outlet pressures increases, and valve stem packing pressure is increasing, when pressure increases to 2MPa
Time, in real-time monitoring modular, see that the output valve of pressure transducer reaches setting value 8mA, at valve Site Detection
The acoustic-optic alarm of device starts, and size of current display screen display electric current is 8mA, and leakage rate display screen shows to be let out
Leakage quantity is 50mL, and control room server terminal alarm device also starts simultaneously, it was demonstrated that now occur at valve stem packing
Leakage, and determine leakage rate, also achieve leakage alarm.
This utility model can detect dielectric leakage situation at valve rod filler fast and effectively, it is possible to carries out in real time
Monitoring determines the concrete leakage rate of medium, it is ensured that the reliability in valve running.And of the present utility model detection fills
Put simple in construction, easy to operate, it is possible to achieve the real-time monitoring of dielectric leakage, it is ensured that valve safe and stable operation.
Pressure transducer used by this utility model is connected with fin, so pressure transducer is not affected by medium temperature,
And be difficult to pollute, service life is long, decreases economic loss.
Pipeline valve embodiment:
The pipeline valve of the present embodiment includes valve stuffing box, is provided with at the pressure sealing mouth of described valve stuffing box
Dielectric leakage detection device, described dielectric leakage detection device is identical with above-mentioned detection device embodiment, at this not
Repeat again.
This utility model can detect the gas leakage situation at valve rod filler in real time, fast and effectively, it is possible to
Monitor in real time and determine the concrete leakage rate of medium, it is ensured that the safe and stable operation of valve, and valve ran
Reliability in journey.
Claims (10)
1. dielectric leakage detection device at a pipeline valve filler, it is characterised in that: described dielectric leakage detection
Device is arranged at the pressure sealing mouth of valve stuffing box, and described dielectric leakage detection device includes Leak Detection mould
Block and leakage alarm module, described Leak Detection module includes the pressure transducer for detecting dielectric leakage signal
With the fin heat abstractor for leaking medium being carried out radiating and cooling；
Described leakage alarm module includes the leakage processing module for processing dielectric leakage signal and for right
The control room server that dielectric leakage signal monitors in real time, described leakage processing module includes for detecting Jie
Matter leaks the control module of value and is used for the onsite alarming device of onsite alarming, and described control room server includes
Memory module, real-time monitoring module and terminal alarms module；
Described fin heat abstractor is arranged at the pressure sealing mouth of stuffing-box, and described pressure transducer is arranged on
The tail end of fin heat abstractor, the signal output part link control module of described pressure transducer, described control module
Control output end connect onsite alarming device, the signal output part of described control module connects memory module, described
The data output end of memory module connects real-time monitoring module and terminal alarms module.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
The terminal alarms module stated includes the webpage alarm module for sending webpage alarm signal, for sending wechat message
Wechat alarm module, for sending the short message alarm module of SMS alarm signal and be used for calling alarm signal
Telephone call module.
Dielectric leakage detection device at pipeline valve filler the most according to claim 2, it is characterised in that institute
The dielectric leakage detection device stated includes intelligent terminal, and described intelligent terminal is with terminal alarms module by the Internet even
Connecing, described intelligent terminal is smart machine.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
State pressure transducer and be threadedly attached in the tail end of fin heat abstractor.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
State fin heat abstractor by pipeline welding or to be threadedly attached at the pressure sealing mouth of stuffing-box.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
The control room server stated is provided with size of current display screen and leakage rate display screen.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
The control module stated is single-chip microcomputer.
Dielectric leakage detection device at pipeline valve filler the most according to claim 1, it is characterised in that institute
The onsite alarming device stated is audible-visual annunciator.
9. a pipeline valve, described pipeline valve includes stuffing-box, it is characterised in that: the band of described stuffing-box
Being provided with dielectric leakage detection device at pressure leak stopping mouth, described dielectric leakage detection device includes Leak Detection module
With leakage alarm module, described Leak Detection module include pressure transducer for detecting dielectric leakage signal and
For leaking medium being carried out the fin heat abstractor of radiating and cooling；
Described leakage alarm module includes the leakage processing module for processing dielectric leakage signal and for right
The control room server that dielectric leakage signal monitors in real time, described leakage processing module includes for detecting Jie
Matter leaks the control module of value and is used for the onsite alarming device of onsite alarming, and described control room server includes
Memory module, real-time monitoring module and terminal alarms module；
Described fin heat abstractor is arranged at the pressure sealing mouth of stuffing-box, and described pressure transducer is arranged on
The tail end of fin heat abstractor, the signal output part link control module of described pressure transducer, described control module
Control output end connect onsite alarming device, the signal output part of described control module connects memory module, described
The data output end of memory module connects real-time monitoring module and terminal alarms module.
Pipeline valve the most according to claim 9, it is characterised in that described dielectric leakage detection device
Including intelligent terminal, described intelligent terminal is connected by the Internet with terminal alarms module, and described intelligent terminal is intelligence
Can equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444960.1U CN205639838U (en) | 2016-05-16 | 2016-05-16 | Pipeline valve gate and medium equipment of filler department thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444960.1U CN205639838U (en) | 2016-05-16 | 2016-05-16 | Pipeline valve gate and medium equipment of filler department thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205639838U true CN205639838U (en) | 2016-10-12 |
Family
ID=57057021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620444960.1U Expired - Fee Related CN205639838U (en) | 2016-05-16 | 2016-05-16 | Pipeline valve gate and medium equipment of filler department thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205639838U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN107701755A (en) * | 2017-11-15 | 2018-02-16 | 潘绍兵 | A kind of valve with pipeline leakage detection device |
| CN107859781A (en) * | 2017-12-06 | 2018-03-30 | 凯瑞特阀业有限公司 | Stop valve |
| 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 |
| RU184992U1 (en) * | 2017-10-05 | 2018-11-15 | Акционерное общество "Машиностроительный завод "Армалит" | BALL ANGLE CRANE |
| 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 |
| CN111946841A (en) * | 2019-05-15 | 2020-11-17 | 北京同方洁净技术有限公司 | Sealing monitoring system for valve sealing state and using method thereof |
| CN113686509A (en) * | 2021-09-13 | 2021-11-23 | 华东理工大学 | Valve packing sealing monitoring device with self-checking function |
-
2016
- 2016-05-16 CN CN201620444960.1U patent/CN205639838U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| RU184992U1 (en) * | 2017-10-05 | 2018-11-15 | Акционерное общество "Машиностроительный завод "Армалит" | BALL ANGLE CRANE |
| 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 |
| 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 |
| CN107701755A (en) * | 2017-11-15 | 2018-02-16 | 潘绍兵 | A kind of valve with pipeline leakage detection device |
| CN107859781A (en) * | 2017-12-06 | 2018-03-30 | 凯瑞特阀业有限公司 | Stop valve |
| CN111946841A (en) * | 2019-05-15 | 2020-11-17 | 北京同方洁净技术有限公司 | Sealing monitoring system for valve sealing state and using method thereof |
| 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 |
| CN113686509A (en) * | 2021-09-13 | 2021-11-23 | 华东理工大学 | Valve packing sealing monitoring device with self-checking function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |