CN108397574A - A kind of nuclear power plant's measurement standard soil resistant isolating valve and its application method - Google Patents

A kind of nuclear power plant's measurement standard soil resistant isolating valve and its application method Download PDF

Info

Publication number
CN108397574A
CN108397574A CN201810181176.XA CN201810181176A CN108397574A CN 108397574 A CN108397574 A CN 108397574A CN 201810181176 A CN201810181176 A CN 201810181176A CN 108397574 A CN108397574 A CN 108397574A
Authority
CN
China
Prior art keywords
valve
measurement standard
cavity
pressure
school
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.)
Granted
Application number
CN201810181176.XA
Other languages
Chinese (zh)
Other versions
CN108397574B (en
Inventor
郑海
张云飞
杨哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
CGN Power Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
Original Assignee
China General Nuclear Power Corp
CGN Power Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China General Nuclear Power Corp, CGN Power Co Ltd, Suzhou Nuclear Power Research Institute Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201810181176.XA priority Critical patent/CN108397574B/en
Publication of CN108397574A publication Critical patent/CN108397574A/en
Application granted granted Critical
Publication of CN108397574B publication Critical patent/CN108397574B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K13/00Other constructional types of cut-off apparatus; Arrangements for cutting-off
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

The present invention relates to a kind of nuclear power plant's measurement standard soil resistant isolating valves,Mounted on measurement standard and by between the manometer of school,Including cavity,One end is connected the first valve that the other end is connected with the measurement standard with the cavity,Between the cavity and the manometer by school and it is connected with the second valve connect,The pressure relief opening being connected with the cavity,Third valve between the cavity and the pressure relief opening,It is installed in measurement standard and by between the manometer of school and using specific structure,This avoid measurement standards directly and by correction power meter contact,Calibration medium can be discharged by pressure relief opening,Because of contamination that medium is brought by standard cavity when avoiding pressure release,Simultaneously conducive to the collecting processing of calibration medium,Avoid the risk of contamination of personnel and calibration test platform.

Description

A kind of nuclear power plant's measurement standard soil resistant isolating valve and its application method
Technical field
The present invention relates to a kind of isolating valves, and in particular to a kind of nuclear power plant's measurement standard soil resistant isolating valve and its use Method.
Background technology
Nuclear power plant is the power plant of the energy production electric energy discharged using nuclear fission or nuclear fusion reaction.Business is transported at present Nuclear plant in turning all is to be reacted and generated electricity using nuclear fission.Nuclear power station is generally divided into two parts:Utilize nuclear fission Produce the nuclear island of steam(Including reactor assembly and primary Ioops system)With the conventional island using steam-electric power(Including turbine generator Machine system).
Source radiation in nuclear power plant control zone, the radionuclide that mainly primary Ioops coolant is taken out of from reactor And activating product.The on-line monitoring instrument and experiment measurement instrument used in control zone, there are radiocontamination wind Danger.It when the measurement instrument in control zone needs transmission of quantity value, is needed first through radiation proof detection, part instrument, which does not have, is stained with Dirt then transports control zone and measurement unit is sent to be demarcated;Another part instrument detects to be stain, and can not carry out effectively Pressure guiding pipe of decontamination or gauge internal etc. can not detect, then do not allow to transport control zone, can not carry out magnitude tracing.With Nuclear power operating unit increases, and the instrument scrapped every year because that can not calibrate gradually increases, and causes the rising of power plant cost, simultaneously It is also accumulated from and largely scraps instrument with radioactive.By the magnitude tracing of contamination instrument, it has also become the eager demand of each nuclear power station.
For the measurement instrument stain, existing method is that calibrating laboratory is set up in control zone, by external meter Amount standard brings control zone into, is calibrated to the instrument stain.But in base measuring pressure class instrument, there are still following difficulties Point:There are surface contaminations for part instrument, in equipment Alignment connection procedure, standard and the junction presence contamination by school instrument Risk;There may be loose radioactive grains for the internal cavity of part instrument, may be with calibration media flow, when calibration medium For water when, the discharge of pipeline overbottom pressure after calibration can only be emptied by dismantling connection with adapter, because having one in pipeline Constant-pressure, water overflow from adapter, can not appropriately collect calibration medium, there are calibration test platform and the contamination wind of personnel Danger;It is gas such as to calibrate medium, and in backhaul calibration and pressure release, calibration medium need to outward be arranged from connecting tube by standard cavity Deflation body, there are standard inside and personnel's risk of contamination.
Invention content
A kind of nuclear power plant's measurement standard soil resistant is provided the purpose of the invention is to overcome the deficiencies in the prior art Isolating valve.
In order to achieve the above objectives, the technical solution adopted in the present invention is:A kind of nuclear power plant's measurement standard soil resistant every From valve, it is mounted on measurement standard and by between the manometer of school, including cavity, one end are connected the other end with the cavity The first valve for being connected with the measurement standard, be mounted between the cavity and the manometer by school and with its point The second valve for not being connected, the pressure relief opening being connected with the cavity, between the cavity and the pressure relief opening Third valve and the micropressure adjusting valve being connected with the cavity.
Preferably, the third valve and the pressure relief opening are wholely set.
Another object of the present invention is to provide a kind of user of above-mentioned nuclear power plant's measurement standard soil resistant isolating valve Method includes the following steps:
(a)By the cavity by pressure guiding pipe respectively with the measurement standard and described connect by school manometer so that institute The first valve is stated between the cavity and the measurement standard, and second valve is located at the cavity and the quilt Between the manometer of school;
(b)Close first valve, start the measurement standard and carry out making pressure, by pressurize situation come check its with it is described Air-tightness between first valve;
(c)Blowdown is carried out by school manometer to described;
(d)First valve and second valve are opened, the third valve is closed, by the measurement standard from zero Start to be forced into the first calibration point, it is after pressure stabilisation, pressure gauge is touched, the error of indication is read;Continue to be forced into its of selection Its calibration point is calibrated, until it measures the upper limit;
(e)It is depressured by the third valve and the micropressure adjusting valve, makes the measurement standard indicating value from its measurement The upper limit is depressurized to each calibration point and is calibrated successively;
(f)Pressure is emptied by the pressure relief opening, and calibration medium is collected.
Further, the step(c)In, it is specially by the progress blowdown of school manometer to described:First close described Three valves open first valve and second valve, are carried out making pressure with the measurement standard;Then institute is closed successively The first valve is stated, the third valve is opened, close second valve, open first valve and opens second valve Door.
Further, the step(c)In, the pollutant of the calibration medium and discharge is collected.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art:Nuclear power plant's meter of the present invention Measure standard soil resistant isolating valve, be installed in measurement standard and by between the manometer of school and use specific structure, This avoid measurement standards directly and by correction power meter contact, and calibration medium can be discharged by pressure relief opening, avoid and let out Because of the contamination that medium is brought by standard cavity when pressure, at the same conducive to calibration medium collecting processing, avoid personnel and The risk of contamination of calibration test platform.
Description of the drawings
Fig. 1 is the structural schematic diagram of nuclear power plant's measurement standard soil resistant isolating valve of the present invention;
Wherein, 1, soil resistant isolating valve;2, measurement standard;3, by school manometer;11, cavity;12, the first valve;13, Two valves;14, third valve;15, micropressure adjusting valve;16, pressure relief opening.
Specific implementation mode
The preferred embodiment of the invention is described in detail below in conjunction with attached drawing.
Nuclear power plant's measurement standard soil resistant isolating valve 1 as shown in Figure 1, it is mounted on measurement standard 2 and by correction Include mainly the components such as cavity 11, the first valve 12, the second valve 13 and third valve 14 between power instrument 3.
Wherein, the first valve 12 is connected with cavity 11, it is also connected with measurement standard 2, that is, makes cavity 11 One end is connected by the first valve 12 with measurement standard 2;Second valve 13 be mounted on cavity 11 and by school manometer 3 it Between and be connected with them, i.e., so that the other end of cavity 11 is connected by the second valve 13 with by school manometer 3.Cavity 11 are also associated with pressure relief opening 16 so that calibration medium can be discharged by pressure relief opening 16, and third valve 14 is mounted on cavity 11 and lets out Between pressure mouth 16;Pressure relief opening 16 can be the structure types such as medium delivery pipe road, it usually carries third valve 14(That is third valve Door 14 and pressure relief opening 16 are wholely set).Micropressure adjusting valve 15 is directly connected with cavity 11, is doing pressure backhaul indicating value school in this way When testing, pressure fine tuning is carried out using micropressure adjusting valve 15 so that the pipeline pressure at 2 end of measurement standard is consistently greater than or is equal to quilt The pressure at 3 end of school manometer reduces the possibility that loose radioactive grain flows to measurement standard 2.Above-mentioned each component Connection is using conventional pipeline(Such as pressure guiding pipe)Connection.
The application method of above-mentioned nuclear power plant's measurement standard soil resistant isolating valve 1, includes the following steps:
(a)On stable checking table, cavity 11 is connected with measurement standard 2 and by school manometer 3 respectively by pressure guiding pipe It connects so that the first valve 12 is between cavity 11 and measurement standard 2, and the second valve 13 is located at cavity 11 and by correction power Between instrument 3(Notice that both ends can not use with, is stain to avoid the appearance of measurement standard 2);Make the first valve 12, the second valve Door 13 and third valve 14 are in opening state, make to be communicated with air by school manometer 3, contact, and read pressure Table zero drift;In the present embodiment, measurement standard 2 is DPI610 electronic pressure gauges;
(b)The first valve 12 is closed, measurement standard 2 is started(That is DPI610 electronic pressure gauges)It carries out making pressure, be marked by measuring The pressurize situation of quasi- device 2 checks it between the first valve 12(That is the connecting pin of measurement standard 2)Air-tightness;Prevent because The connecting pin gas leakage of measurement standard 2 causes medium when calibration to flow out and pollute from 2 port of measurement standard;
(c)To carrying out blowdown by school manometer 3:Third valve 14 is first closed, the first valve 12 and the second valve 13 are opened, is used Measurement standard 2 carries out making pressure;The first valve 12 is then closed successively, is opened third valve 14, is closed the second valve 13, opens First valve 12 and open the second valve 13 so that measurement standard 2 and by school manometer 3(Actually measurement standard 2 And first between valve 12, by between school manometer 3 and the second valve 13)Pressure venting, and will calibration medium and discharge Pollutant be collected;
(d)Positive stroke error of indication calibration:The first valve 12 and the second valve 13 are opened, third valve 14 is closed, metering is marked Quasi- device 2 is forced into the first calibration point since zero(The a certain indicating value of measurement standard 2), it is after pressure stabilisation, touch pressure Table reads the error of indication;Continue the first calibration point for being forced into selection, it is after pressure stabilisation, pressure gauge is touched, indicating value is read and misses Difference;Above step is repeated until being forced into the measurement upper limit of measurement standard 2;If calibration, appearance can not pressurize the case where, The first valve 12 and the second valve 13 can be closed, judge leak source, to avoid in control zone because use leak detection liquid due to can not be appropriate It is kind to collect, cause the pollution of checking table;
(e)The revesal error of indication is calibrated:With reference to step(d)Measurement standard 2 is measured into the upper limit by it and is depressurized to each school successively It is calibrated on schedule, until zero;It needs, by third valve 14, to be depressured at this time;When pressure is down near calibration point, close Third valve 14 reduces manifold pressure, makes up to set calibration point by micropressure adjusting valve 15;Equally, if pressure is low It in calibration point, is then first pressurizeed by DPI610, then calibration point is slowly depressurized to by micropressure adjusting valve 15;
(f)Pressure is emptied by pressure relief opening 16, and calibration medium is collected:When emptying pipeline pressure, the first valve is first closed Door 12 opens third valve 14, then will be calibrated end(I.e. by between school manometer 3 and the second valve 13)Pressure emptying; Then the first valve 12 is opened again, by 2 end of measurement standard(I.e. between measurement standard 2 and the first valve 12)Pressure row It is empty.It is water when calibrating medium, corresponding container can be directly connected to letting out pressure relief opening 16, be collected;If calibration medium is air, also It can be connected by pressure guiding pipe in the container being filled with water in pressure relief opening 16, the air in cavity is avoided directly to arrange to outside.Calibration finishes Afterwards, it by the calibration medium of collection, is dealt carefully with by radiation protection regulation.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.

Claims (5)

1. a kind of nuclear power plant's measurement standard soil resistant isolating valve, it is characterised in that:It is mounted on measurement standard and by correction Between power instrument, including cavity, one end are connected the first valve that the other end is connected with the measurement standard with the cavity Door, between the cavity and the manometer by school and be connected with the second valve connect, with the cavity The pressure relief opening that is connected, the third valve between the cavity and the pressure relief opening and it is connected with the cavity Micropressure adjusting valve.
2. nuclear power plant's measurement standard soil resistant isolating valve according to claim 1, it is characterised in that:The third valve It is wholely set with the pressure relief opening.
3. a kind of application method of nuclear power plant's measurement standard soil resistant isolating valve as claimed in claim 1 or 2, feature exist In including the following steps:
(a)By the cavity by pressure guiding pipe respectively with the measurement standard and described connect by school manometer so that institute The first valve is stated between the cavity and the measurement standard, and second valve is located at the cavity and the quilt Between the manometer of school;
(b)Close first valve, start the measurement standard and carry out making pressure, by pressurize situation come check its with it is described Air-tightness between first valve;
(c)Blowdown is carried out by school manometer to described;
(d)First valve and second valve are opened, the third valve is closed, by the measurement standard from zero Start to be forced into the first calibration point, it is after pressure stabilisation, pressure gauge is touched, the error of indication is read;Continue to be forced into its of selection Its calibration point is calibrated, until it measures the upper limit;
(e)It is depressured by the third valve and the micropressure adjusting valve, makes the measurement standard indicating value from its measurement The upper limit is depressurized to each calibration point and is calibrated successively;
(f)Pressure is emptied by the pressure relief opening, and calibration medium is collected.
4. the application method of nuclear power plant's measurement standard soil resistant isolating valve according to claim 3, which is characterized in that described Step(c)In, it is specially by the progress blowdown of school manometer to described:The third valve is first closed, first valve is opened Door and second valve, are carried out making pressure with the measurement standard;First valve is then closed successively, opens described the Three valves close second valve, open first valve and open second valve.
5. the application method of nuclear power plant's measurement standard soil resistant isolating valve according to claim 4, it is characterised in that:It is described Step(c)In, the pollutant of the calibration medium and discharge is collected.
CN201810181176.XA 2018-03-06 2018-03-06 Anti-contamination isolation valve for metering standard device of nuclear power plant and use method of anti-contamination isolation valve Active CN108397574B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810181176.XA CN108397574B (en) 2018-03-06 2018-03-06 Anti-contamination isolation valve for metering standard device of nuclear power plant and use method of anti-contamination isolation valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810181176.XA CN108397574B (en) 2018-03-06 2018-03-06 Anti-contamination isolation valve for metering standard device of nuclear power plant and use method of anti-contamination isolation valve

Publications (2)

Publication Number Publication Date
CN108397574A true CN108397574A (en) 2018-08-14
CN108397574B CN108397574B (en) 2020-01-03

Family

ID=63092430

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810181176.XA Active CN108397574B (en) 2018-03-06 2018-03-06 Anti-contamination isolation valve for metering standard device of nuclear power plant and use method of anti-contamination isolation valve

Country Status (1)

Country Link
CN (1) CN108397574B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110487315A (en) * 2019-08-28 2019-11-22 广东核电合营有限公司 A kind of analysis system and method for instrument drift

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11218297A (en) * 1997-11-14 1999-08-10 Air Prod And Chem Inc Gas control device and gas supplying method
US20090064756A1 (en) * 2007-09-07 2009-03-12 Korea Research Institute Of Standards And Science Vacuum gauge calibration apparatus capable of calibrating and testing without displacement and operating method thereof
CN101419098A (en) * 2008-12-09 2009-04-29 大连工业大学 Intelligent temperature isolation transmitter
CN203616052U (en) * 2013-12-19 2014-05-28 珠海格力电器股份有限公司 A pressure gauge calibrating device
CN205347465U (en) * 2016-02-02 2016-06-29 四川德胜集团钒钛有限公司 TRT exhaust pipe
CN206095519U (en) * 2016-10-13 2017-04-12 广西防城港核电有限公司 Pressure transmitter on -line maintenance system
CN206920077U (en) * 2017-04-27 2018-01-23 中国核工业第五建设有限公司 Pressure meter calibration servicing unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11218297A (en) * 1997-11-14 1999-08-10 Air Prod And Chem Inc Gas control device and gas supplying method
US20090064756A1 (en) * 2007-09-07 2009-03-12 Korea Research Institute Of Standards And Science Vacuum gauge calibration apparatus capable of calibrating and testing without displacement and operating method thereof
CN101419098A (en) * 2008-12-09 2009-04-29 大连工业大学 Intelligent temperature isolation transmitter
CN203616052U (en) * 2013-12-19 2014-05-28 珠海格力电器股份有限公司 A pressure gauge calibrating device
CN205347465U (en) * 2016-02-02 2016-06-29 四川德胜集团钒钛有限公司 TRT exhaust pipe
CN206095519U (en) * 2016-10-13 2017-04-12 广西防城港核电有限公司 Pressure transmitter on -line maintenance system
CN206920077U (en) * 2017-04-27 2018-01-23 中国核工业第五建设有限公司 Pressure meter calibration servicing unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110487315A (en) * 2019-08-28 2019-11-22 广东核电合营有限公司 A kind of analysis system and method for instrument drift

Also Published As

Publication number Publication date
CN108397574B (en) 2020-01-03

Similar Documents

Publication Publication Date Title
CN201925716U (en) Metering calibration standard device for liquefied natural gas (LNG) dispenser
CN104897235B (en) It is a kind of for the water level measurement system of boiler-steam dome and its measurement and method of calibration
CN201803832U (en) Tester using acoustic emission signals to detect valve leakage
CN110631664A (en) Liquid flow calibration and calibration device
CN207081525U (en) A kind of nuclear power station isolating valve reveals measurement apparatus
CN103680647A (en) Fuel sipping inspection environmental simulation device
CN108397574A (en) A kind of nuclear power plant's measurement standard soil resistant isolating valve and its application method
CN201522317U (en) Online calibrating device of orifice-plate steam flow measuring system
CN211602283U (en) Automatic batch verification equipment for pressure gauges
CN111272360B (en) Air pipe air tightness inspection device for defense area and using method
CN105133657A (en) Solar type weight measurement well lid
CN210742049U (en) Ammonia process desulfurization slurry density on-line testing device
CN218865235U (en) Simulation oil tank test device
CN208420321U (en) Safety valve testing equipment
CN2935101Y (en) Differential pressure water level meter of room temperature single-chamber balance vessel
CN210400557U (en) Liquid flow calibration and calibration device
CN102279029A (en) Self-calibrating putting-into-type pressure liquid level meter and measuring method thereof
CN203350154U (en) Density detector
CN210774569U (en) Sealing detection device of safety valve
CN206600609U (en) A kind of explosion-proof air accumulator
CN205449211U (en) Biogas engineering gas production test system
CN203616999U (en) Fuel sipping testing environment simulator
CN203534929U (en) Non-contact solid matter density detector
CN202133437U (en) Self-calibration drop type pressure liquid level meter
CN206627243U (en) Pressure transmitter sampling system and differential pressure transmitter sampling system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant