CN103472193A - Quick tester for transmitter laboratory - Google Patents
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- CN103472193A CN103472193A CN2013104592507A CN201310459250A CN103472193A CN 103472193 A CN103472193 A CN 103472193A CN 2013104592507 A CN2013104592507 A CN 2013104592507A CN 201310459250 A CN201310459250 A CN 201310459250A CN 103472193 A CN103472193 A CN 103472193A
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Abstract
A quick tester for a transmitter laboratory comprises a standard gas generation device, a two-position three-way electromagnetic valve, a first three-way pipe, a calibration box for a meter to be evaluated and a differential pressure sensor. A gas outlet of the standard gas generation device is connected with a gas inlet of the two-position three-way electromagnetic valve, a gas outlet of the two-position three-way electromagnetic valve and a gas inlet of the calibration box for the meter to be evaluated are connected with two end ports of the first three-way pipe respectively, and another end port of the first three-way pipe is connected with the differential pressure sensor. The quick tester can evaluate whether a transmitter works reliably and can be widely applied to various power experimental investigation institutes and laboratories of a power system and factories for producing sulfur hexafluoride leakage monitoring meters. Furthermore, the quick tester has the significance in guaranteeing operation safety of sulfur hexafluoride electric equipment, preventing environmental pollution and damage caused by leakage of sulfur hexafluoride high pressure switches and protecting life safety of maintainers.
Description
Technical field
The invention belongs to the instrument technical field, particularly a kind of quick tester in transmitter laboratory that is applicable to the verification of sulfur hexafluoride gas monitoring, alarming transmitter.
Background technology
Sulfur hexafluoride gas, with insulation and the arc extinction performance of its excellence, is widely used on the GIS equipment of urban distribution network transformer station.But, because the factors such as the difference that is subject to the quality such as manufacture, installation and material aging affect, it is a general phenomenon that sulfur hexafluoride electrical equipment occurs to leak, and the sulfur hexafluoride gas leaked out and analyte thereof can gather toward indoor low layer space, cause local anoxic and band poison, the life security that enters indoor staff has been formed to serious danger.
The relevant criterion of China and behavior rules clearly propose the leakage monitoring of sulfur hexafluoride gas.According to " electric industry safety regulations ", DL/T 639-1997 " sulfur hexafluoride electrical equipment operation, test and maintainer's security protection detailed rules and regulations " and the relevant regulations such as GB12358-2006 " requirement of operation site surrounding gas detecting and alarming instrument current techique ", in room sulfur hexafluoride electrical equipment workplace, online sulfur hexafluoride-oxygen leakage monitoring alarm instrument must be installed, the content of sulfur hexafluoride gas and oxygen in the Real-Time Monitoring environment, when sulfur hexafluoride gas content overproof in environment (sulfur hexafluoride gas concentration>1000 μ L/L) or anoxic (oxygen concentration<18%), monitoring alarm instrument can carry out sound and light alarm immediately, to remind the staff to take safety measures, simultaneously, system automatically starts air discharging facility and reduces sulfur hexafluoride gas content in surrounding air, assurance enters office work personnel's personal safety.
On the one hand, it is universal phenomenon that sulfur hexafluoride electrical equipment occurs to leak, and on the other hand, the relevant criterion of China and behavior rules clearly propose the leakage monitoring of sulfur hexafluoride gas; So, in power grid construction, how the bid product is carried out to authoritative performance test, sensor performance is assessed, the censorship sensing unit is completed to calibrating? at present, lack the calibration tool to the practicality of sulfur hexafluoride gas monitoring, alarming transmitter on market He in industry.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides a kind of quick tester in transmitter laboratory that carries out quick verification for sulfur hexafluoride gas monitoring, alarming transmitter specially.
For achieving the above object, the present invention is by the following technical solutions: the quick tester in transmitter laboratory, comprise standard gas generating apparatus, two-position three way magnetic valve, the first three-way pipe, instrument check case to be evaluated and differential pressure pick-up, the gas outlet of standard gas generating apparatus is connected with the air intake opening of two-position three way magnetic valve, a gas outlet of two-position three way magnetic valve and the air intake opening of instrument check case to be evaluated are connected with two ports of the first three-way pipe respectively, and another port of the first three-way pipe is connected with the differential pressure sensing.
Also comprise the first two-position two-way solenoid valve, pneumatic pump and the second three-way pipe, the gas outlet of described instrument check case to be evaluated is connected with the air intake opening of the first two-position two-way solenoid valve, the gas outlet of the first two-position two-way solenoid valve is connected with the air intake opening of pneumatic pump, and the gas outlet of pneumatic pump is connected with a port of the second three-way pipe.
Also comprise the second two-position two-way solenoid valve, on described instrument check case to be evaluated, offer emptying air intake opening, emptying air intake opening is connected with the gas outlet of the second two-position two-way solenoid valve.
Another gas outlet of described two-position three way magnetic valve is connected with another port of the second three-way pipe.
Adopt technique scheme, the present invention adopts built-in standard gas generating apparatus, collection sulfur hexafluoride and numerous measured value of parameters detections such as oxygen content and ambient temperature and humidity and calibration and one, when transmitter is connected with the monitoring main frame, can also verify whether the alarm module of monitoring main frame normally starts.Whether in a word, whether standard gas generating apparatus can be estimated the work of transmitter reliable, whether accurately comprises measured value, and whether reaction velocity meets the requirements, and whether the accuracy of measured value meet expection, can also check the alarm module of monitoring main frame normal.
Standard gas generating apparatus is used for generating estimates the calibrating gas of verification sulfur hexafluoride on-line monitoring transmitter in other words.The standard source of the gas that its air source inlet input is purchased, the calibrating gas of the various concentration that its delivery outlet output verification transmitter is used.The built-in verification gas generating unit of the present invention, the user need not buy special distribution equipment when carrying out instrument check, only needs to prepare two bottles of gases and gets final product, and verification is convenient, cost.
The gas outlet of standard gas generating apparatus is connected to instrument check case to be evaluated after being connected in series successively a two-position three way magnetic valve and the first three-way pipe by gas piping, and a remaining port of the first three-way pipe is connected with differential pressure pickup.Differential pressure pickup is used for the variation of Real-Time Monitoring instrument check loading pressure to be evaluated, in order to system running environment and security are judged, and makes action by corresponding control module, the safeguards system even running.When the transmitter of the online leakage monitoring warning of room sulfur hexafluoride gas needs verification to estimate, put it into instrument check case to be evaluated, complete the evaluation of instrument under the calibrating gas environment that these transmitters will generate at standard gas generating apparatus, whether accurately comprise measured value, whether reaction velocity meets the requirements, and whether the accuracy of measured value meets expection; When being connected with the monitoring main frame, transmitter can also check the alarm module of monitoring main frame whether normal.
In checking procedure, when the calibrating gas in instrument check case to be evaluated needs varied concentration, or while having tested, need to the gas in instrument check case to be evaluated is emptying.The present invention has also designed the fast evacuation gas circuit, to meet shorter verification time requirement intermittently, and after completing the primary instrument verification, but Rapid replacement verification gas, in order to next verification.Emptying gas circuit of the present invention is as follows: the emptying air intake opening of instrument check case to be evaluated connects the second two-position two-way solenoid valve, in the bottom of instrument check case to be checked, there is ，Gai gas outlet, a gas outlet to be connected with the first two-position two-way solenoid valve, pneumatic pump and the second three-way pipe in turn by gas piping.When instrument check case needs to be evaluated are emptying, the gas in instrument check case to be evaluated is discharged from gas outlet by the first two-position two-way solenoid valve, pneumatic pump and the second three-way pipe successively under the effect of pneumatic pump.In order to weaken the impact of residual gas in instrument check case to be evaluated, the present invention has also designed emptying air inlet pipeline, under the effect of pneumatic pump, outside air enters instrument check case to be evaluated and then discharges from its gas outlet via the first two-position two-way solenoid valve, pneumatic pump and the second three-way pipe after the second two-position two-way solenoid valve.
When the calibrating gas flow of standard gas generating apparatus generation is greater than the gas flow of checking box use, unnecessary gas flow is shunted from another passage of two-position three way magnetic valve, produce overflow, this overflow gas is incorporated to its gas outlet and is drained through gas piping, the second three-way pipe again.
The present invention adopts built-in standard gas generating apparatus, collection sulfur hexafluoride and numerous measured value of parameters detections such as oxygen content and ambient temperature and humidity and calibration and one, when transmitter is connected with the monitoring main frame, can also verify whether the alarm module of monitoring main frame normally starts.Whether in a word, whether the present invention can estimate the work of transmitter reliable, whether accurately comprises measured value, and whether reaction velocity meets the requirements, and whether the accuracy of measured value meet expection, can also check the alarm module of monitoring main frame normal.
Whether the present invention can estimate the work of transmitter reliable, whether accurately comprise numerous measured value of parameters such as sulfur hexafluoride and oxygen content and ambient temperature and humidity etc., whether reaction velocity meets the requirements, and whether the accuracy of measured value meets expection, when transmitter is connected with the monitoring main frame, can also check the alarm module of monitoring main frame whether normal.All kinds of power tests that this device can be widely used in electric system grind and the manufacturer of laboratory and sulfur hexafluoride leakage monitoring instrument, to ensureing the security of operation of sulfur hexafluoride electrical equipment, the leakage pollution on the environment of prevention SF 6 high-voltage switch and destruction, Maintenance and Repair personnel life security are significant.
In addition, the built-in standard gas generating apparatus of the present invention, the user need not buy special distribution equipment when carrying out instrument check, and a need is prepared two bottles of gases and is got final product, and has the characteristics of verification convenience, cost.The present invention has designed the fast evacuation gas circuit, has the shorter verification quiescent interval, require after completing the primary instrument verification, but Rapid replacement verification gas, in order to next verification; Have that verification speed is fast, the characteristics of high efficiency.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the quick tester in transmitter of the present invention laboratory, comprise standard gas generating apparatus 1, two-position three way magnetic valve 2, the first three-way pipe 3, instrument check case 4 to be evaluated and differential pressure pick-up 5, the gas outlet of standard gas generating apparatus 1 is connected with the air intake opening of two-position three way magnetic valve 2, a gas outlet of two-position three way magnetic valve 2 and the air intake opening of instrument check case 4 to be evaluated are connected with two ports of the first three-way pipe 3 respectively, and another port of the first three-way pipe 3 is connected with the differential pressure sensing.
The present invention also comprises the first two-position two-way solenoid valve 6, pneumatic pump 7 and the second three-way pipe 8, the gas outlet of described instrument check case 4 to be evaluated is connected with the air intake opening of the first two-position two-way solenoid valve 6, the gas outlet of the first two-position two-way solenoid valve 6 is connected with the air intake opening of pneumatic pump 7, and the gas outlet of pneumatic pump 7 is connected with a port of the second three-way pipe 8.
The present invention also comprises the second two-position two-way solenoid valve 9, on described instrument check case 4 to be evaluated, offers emptying air intake opening, and emptying air intake opening is connected with the gas outlet of the second two-position two-way solenoid valve 9.
Two-position three way magnetic valve 2 another gas outlets are connected with another port of the second three-way pipe 8.
Standard gas generating apparatus 1 in the middle of the present invention repeats no more for existing mature technology, concrete structure.
The gas outlet of standard gas generating apparatus 1 is connected in series successively after a two-position three way magnetic valve 2 and the first three-way pipe 3 and is connected to instrument check case 4, the first three-way pipes 3 remaining ports to be evaluated and is connected with differential pressure pickup by gas piping.Differential pressure pickup is used for the variation of Real-Time Monitoring instrument check case 4 interior gaseous tensions to be evaluated, in order to system running environment and security are judged, and makes action by corresponding control module, the safeguards system even running.When the transmitter of the online leakage monitoring warning of room sulfur hexafluoride gas needs verification to estimate, put it into instrument check case 4 to be evaluated, complete the evaluation of instrument under the calibrating gas environment that these transmitters will generate at standard gas generating apparatus 1, whether accurately comprise measured value, whether reaction velocity meets the requirements, and whether the accuracy of measured value meets expection; When being connected with the monitoring main frame, transmitter can also check the alarm module of monitoring main frame whether normal.
In checking procedure, when the calibrating gas in instrument check case 4 to be evaluated needs varied concentration, or while having tested, need to the gas in instrument check case 4 to be evaluated is emptying.The present invention has also designed the fast evacuation gas circuit, to meet shorter verification time requirement intermittently, and after completing the primary instrument verification, but Rapid replacement verification gas, in order to next verification.Emptying gas circuit of the present invention is as follows: the emptying air intake opening of instrument check case 4 to be evaluated connects the second two-position two-way solenoid valve 9, in the bottom of instrument check case to be checked, there is ，Gai gas outlet, a gas outlet to be connected with the first two-position two-way solenoid valve 6, pneumatic pump 7 and the second three-way pipe 8 in turn by gas piping.When instrument check case to be evaluated 4 needs when emptying, the gas in instrument check case 4 to be evaluated is discharged from gas outlet by the first two-position two-way solenoid valve 6, pneumatic pump 7 and the second three-way pipe 8 successively under the effect of pneumatic pump 7.In order to weaken the impact of instrument check case 4 interior residual gas to be evaluated, the present invention has also designed emptying air inlet pipeline, under the effect of pneumatic pump 7, outside air enters instrument check case 4 to be evaluated and then discharges from its gas outlet via the first two-position two-way solenoid valve 6, pneumatic pump 7 and the second three-way pipe 8 after the second two-position two-way solenoid valve 9.
When the calibrating gas flow of standard gas generating apparatus 1 generation is greater than the gas flow of checking box use, unnecessary gas flow is shunted from another passage of two-position three way magnetic valve 2, produce overflow, this overflow gas is incorporated to its gas outlet and is drained through gas piping, the second three-way pipe 8 again.
The present invention adopts built-in standard gas generating apparatus 1, collection sulfur hexafluoride and numerous measured value of parameters detections such as oxygen content and ambient temperature and humidity and calibration and one, when transmitter is connected with the monitoring main frame, can also verify whether the alarm module of monitoring main frame normally starts.Whether in a word, whether standard gas generating apparatus 1 can be estimated the work of transmitter reliable, whether accurately comprises measured value, and whether reaction velocity meets the requirements, and whether the accuracy of measured value meet expection, can also check the alarm module of monitoring main frame normal.
Standard gas generating apparatus 1 is used for generating estimates the calibrating gas of verification sulfur hexafluoride on-line monitoring transmitter in other words.The standard source of the gas that its air source inlet input is purchased, the calibrating gas of the various concentration that its delivery outlet output verification transmitter is used.The built-in verification gas generating unit of the present invention, the user need not buy special distribution equipment when carrying out instrument check, only needs to prepare two bottles of gases and gets final product, and verification is convenient, cost.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. the quick tester in transmitter laboratory, it is characterized in that: comprise standard gas generating apparatus, two-position three way magnetic valve, the first three-way pipe, instrument check case to be evaluated and differential pressure pick-up, the gas outlet of standard gas generating apparatus is connected with the air intake opening of two-position three way magnetic valve, a gas outlet of two-position three way magnetic valve and the air intake opening of instrument check case to be evaluated are connected with two ports of the first three-way pipe respectively, and another port of the first three-way pipe is connected with the differential pressure sensing.
2. the quick tester in transmitter according to claim 1 laboratory, it is characterized in that: also comprise the first two-position two-way solenoid valve, pneumatic pump and the second three-way pipe, the gas outlet of described instrument check case to be evaluated is connected with the air intake opening of the first two-position two-way solenoid valve, the gas outlet of the first two-position two-way solenoid valve is connected with the air intake opening of pneumatic pump, and the gas outlet of pneumatic pump is connected with a port of the second three-way pipe.
3. the quick tester in transmitter according to claim 2 laboratory, it is characterized in that: also comprise the second two-position two-way solenoid valve, offer emptying air intake opening on described instrument check case to be evaluated, emptying air intake opening is connected with the gas outlet of the second two-position two-way solenoid valve.
4. according to the quick tester in the described transmitter of claim 2 or 3 laboratory, it is characterized in that: another gas outlet of described two-position three way magnetic valve is connected with another port of the second three-way pipe.
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| CN201310459250.7A CN103472193B (en) | 2013-09-30 | 2013-09-30 | Quick tester for transmitter laboratory |
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| CN201310459250.7A CN103472193B (en) | 2013-09-30 | 2013-09-30 | Quick tester for transmitter laboratory |
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| CN103472193B CN103472193B (en) | 2015-06-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103940965A (en) * | 2014-04-28 | 2014-07-23 | 广东电网公司电力科学研究院 | Device and method for detecting gas transmitting equipment |
| CN105334299A (en) * | 2015-12-15 | 2016-02-17 | 北京雪迪龙科技股份有限公司 | Standard gas generation system and method for dynamically monitoring standard gas |
| CN106092440A (en) * | 2016-08-09 | 2016-11-09 | 江苏方天电力技术有限公司 | A kind of detection device for differential pressure transmitter |
| CN108362827A (en) * | 2018-01-09 | 2018-08-03 | 国网山东省电力公司滨州供电公司 | A kind of detection device for testing substation SF6 working sensor states |
| CN109141782A (en) * | 2018-09-18 | 2019-01-04 | 昆明北方红外技术股份有限公司 | The airtight test of ultralow pressure and gas substitution detector |
| CN110865152A (en) * | 2019-11-28 | 2020-03-06 | 天地（常州）自动化股份有限公司 | Gas sensor aging device for coal mine and detection method |
| CN113933467A (en) * | 2021-10-26 | 2022-01-14 | 国网浙江省电力有限公司电力科学研究院 | Sulfur hexafluoride decomposition product gas pressure monitoring device based on gas in-situ detection |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108362827A (en) * | 2018-01-09 | 2018-08-03 | 国网山东省电力公司滨州供电公司 | A kind of detection device for testing substation SF6 working sensor states |
| CN109141782A (en) * | 2018-09-18 | 2019-01-04 | 昆明北方红外技术股份有限公司 | The airtight test of ultralow pressure and gas substitution detector |
| CN110865152A (en) * | 2019-11-28 | 2020-03-06 | 天地（常州）自动化股份有限公司 | Gas sensor aging device for coal mine and detection method |
| CN113933467A (en) * | 2021-10-26 | 2022-01-14 | 国网浙江省电力有限公司电力科学研究院 | Sulfur hexafluoride decomposition product gas pressure monitoring device based on gas in-situ detection |
| CN113933467B (en) * | 2021-10-26 | 2024-02-13 | 国网浙江省电力有限公司电力科学研究院 | Sulfur hexafluoride decomposition product air pressure monitoring device based on gas in-situ detection |
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