CN112557621A - Gas composition monitoring and alarming device - Google Patents
Gas composition monitoring and alarming device Download PDFInfo
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- CN112557621A CN112557621A CN202011263251.0A CN202011263251A CN112557621A CN 112557621 A CN112557621 A CN 112557621A CN 202011263251 A CN202011263251 A CN 202011263251A CN 112557621 A CN112557621 A CN 112557621A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 238000004868 gas analysis Methods 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 5
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 abstract description 5
- 238000013480 data collection Methods 0.000 abstract description 4
- 238000004451 qualitative analysis Methods 0.000 abstract description 4
- 238000004445 quantitative analysis Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 188
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0029—Cleaning of the detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0068—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a computer specifically programmed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
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Abstract
The invention discloses a gas component monitoring and alarming device, which comprises: the gas taking and separating module is used for automatically opening the three-way valve by the monitoring and alarming device when light gas alarms, the gas enters the detection pipeline, and the gas enters the gas analysis module after being purified by the oil-gas separator; the gas analysis module is used for identifying gas components and converting the gas components into electric signals by the combustible gas sensor when gas enters the gas collection chamber through the gas inlet electromagnetic valve, and the gas collection chamber is connected with the combustible gas sensor which stores the electric signals to the gas analysis module; the remote monitoring module collects the electric signal of the gas analysis module, obtains gas components through analyzing the electric signal, remotely monitors the working state of the gas relay through monitoring software, and gives an alarm when combustible gas exists in the gas. The gas analysis device can realize the functions of qualitative analysis, quantitative analysis, advanced alarm, data collection and analysis and the like of gas components.
Description
Technical Field
The application relates to the technical field of electrical engineering, in particular to a gas composition monitoring and alarming device.
Background
The false judgment is caused by that air enters the transformer due to the imprecise oil filtering, oil filling or cooling system in the transformer, and the liquid level is reduced due to the air accumulation in the gas relay, so that the relay alarm is not controlled by the conventional gas relay. Secondly, the working principle of the gas relay causes that the gas relay can not accurately distinguish gas components, and then the direct air release of the transformer under the working state also brings risks to working personnel. And finally, the oil level can be reduced only when the gas content of the gas relay reaches a certain amount, so that the gas relay acts, the internal fault of the transformer is still continuously in a fault stage when reaching an alarm threshold value and going to the site to deflate and remove the alarm, and if the processing time is not timely or is slower than the fault increase rate of the transformer, a worker can not judge the fault in advance, so that the fault is further enlarged.
Therefore, it is necessary to design a device capable of performing qualitative analysis, quantitative analysis, early warning, data collection and analysis of the gas components.
Disclosure of Invention
The application provides a gas composition monitoring and alarm device can realize functions such as gas composition qualitative analysis, quantitative analysis, warning in advance and data collection and analysis.
The application provides a gas composition monitoring and alarm device, includes:
the gas taking and separating module is used for automatically opening the three-way valve by the monitoring and alarming device when light gas alarms, the gas enters the detection pipeline, meanwhile, the oil-gas separator is combined with the electromagnetic valve to discharge oil in the detection pipeline into the oil discharge pool, and the gas enters the gas analysis module after being purified by the oil-gas separator;
the gas analysis module is used for identifying gas components and converting the gas components into electric signals by the combustible gas sensor when gas enters the gas collection chamber through the gas inlet electromagnetic valve, and the gas collection chamber is connected with the combustible gas sensor which stores the electric signals to the gas analysis module;
the remote monitoring module collects the electric signal of the gas analysis module, obtains gas components through analyzing the electric signal, remotely monitors the working state of the gas relay through monitoring software, and gives an alarm when combustible gas exists in the gas.
Preferably, the gas taking and separating module consists of a three-way pipe, a gas collecting box, a pipeline, an oil-gas separator, an electromagnetic valve and an oil discharge tank;
the three-way pipe is respectively connected with the gas taking port, the gas collecting box and the oil-gas separator; when the three-way valve on the three-way valve is opened, the gas enters the three-way pipe;
the gas collecting box is used for separating gas and oil in the gas; the separated gas and oil enter a pipeline;
a pipeline for transporting gas;
the oil-gas separator is combined with the electromagnetic valve to discharge oil in the pipeline into the oil discharge pool, the oil-gas separator purifies the gas, and the purified gas enters the gas analysis module;
and the oil drainage pool is used for collecting the oil in the pipeline.
Preferably, the gas analysis module consists of an air inlet electromagnetic valve, an air collection chamber, a combustible gas sensor, a gas analyzer, an exhaust pump, an exhaust electromagnetic valve and an exhaust pipeline;
the gas inlet electromagnetic valve is used for allowing gas to enter the gas analysis module after the gas inlet electromagnetic valve is opened;
the gas collection chamber is used for collecting gas entering the gas analysis module;
the combustible gas sensor is used for identifying gas components, converting the gas components into electric signals and uploading the electric signals to the gas analyzer;
the gas analyzer analyzes the components of the gas according to the electric signal sent by the combustible gas sensor;
the exhaust pump is used for improving the exhaust performance of the exhaust electromagnetic valve;
the gas analysis module is used for analyzing the components of the gas, and then the gas analysis module is used for analyzing the components of the gas;
the gas exhausting pipeline is used for exhausting gas.
Preferably, the combustible gas sensor includes: h2 sensor, methane sensor and acetylene sensor.
Preferably, the remote monitoring module consists of a working power supply, an alarm device, a communication module and monitoring software;
the working power supply is used for providing power for the gas component monitoring and alarming device;
and the alarm device is used for sending alarm information when receiving an alarm signal when the monitoring software finds that the gas components contain combustible gas.
The communication system is used for completing communication among the working power supply, the alarm device and the monitoring software;
and the monitoring software is also used for controlling a valve and an air pump to control the air inlet and exhaust functions of the gas composition monitoring and alarming device.
The application provides a gas composition monitoring and alarm device acquires the gas that awaits measuring through getting the gas module, and gas analysis module passes through the combustible gas sensor and discerns the gas composition and turn into the signal of telecommunication, and remote monitoring module passes through the analysis the signal of telecommunication obtains the gas composition to working condition through monitoring software remote monitoring buchholz relay sends the warning when having combustible gas in the gas, thereby solves the demand problem to gas composition qualitative analysis, quantitative analysis, warning in advance and the device of functions such as data collection and analysis.
Drawings
FIG. 1 is a functional block schematic diagram of a gas composition monitoring and alarm device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a prototype of a gas composition monitoring device provided in the embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
The application provides a gas composition monitoring and alarm device, the schematic diagram of device function module is shown as figure 1, includes: the device comprises a gas taking and separating module, a gas analyzing module and a remote monitoring module.
The gas taking and separating module is used for automatically opening the three-way valve by the monitoring and alarming device when light gas alarms, the gas enters the detection pipeline, meanwhile, the oil-gas separator is combined with the electromagnetic valve to discharge oil in the detection pipeline into the oil discharge pool, and the gas enters the gas analysis module after being purified by the oil-gas separator; the gas enters a gas analysis module, and the process is automatically controlled by a program.
The gas taking and separating module consists of a three-way pipe, a gas collecting box, a pipeline, an oil-gas separator, an electromagnetic valve and an oil discharge tank; the three-way pipe is respectively connected with the gas taking port, the gas collecting box and the oil-gas separator; when the three-way valve on the three-way valve is opened, the gas enters the three-way pipe; the gas collecting box is used for separating gas and oil in the gas; the separated gas and oil enter a pipeline; a pipeline for transporting gas; the oil-gas separator is combined with the electromagnetic valve to discharge oil in the pipeline into the oil discharge pool, the oil-gas separator purifies the gas, and the purified gas enters the gas analysis module; and the oil drainage pool is used for collecting the oil in the pipeline.
The specific working process of the gas taking and separating module is that when light gas alarms, the system automatically opens the three-way valve, the gas enters the detection pipeline, meanwhile, the oil-gas separator is combined with the electromagnetic valve to discharge oil in the pipeline into the oil discharge pool, purified gas in the oil-gas separator enters the detection device, and gas enters the gas analysis module, and the process is automatically controlled by a program.
And when the gas enters the gas collection chamber through the gas inlet electromagnetic valve, the gas collection chamber is connected with the combustible gas sensor, the combustible gas sensor identifies gas components and converts the gas components into electric signals, and the electric signals are stored in the gas analysis module.
The gas inlet electromagnetic valve is used for allowing gas to enter the gas analysis module after the gas inlet electromagnetic valve is opened; the gas collection chamber is used for collecting gas entering the gas analysis module; the combustible gas sensor is used for identifying gas components, converting the gas components into electric signals and uploading the electric signals to the gas analyzer; the gas analyzer analyzes the components of the gas according to the electric signal sent by the combustible gas sensor; the exhaust pump is used for improving the exhaust performance of the exhaust electromagnetic valve; the gas analysis module is used for analyzing the components of the gas, and then the gas analysis module is used for analyzing the components of the gas; the gas exhausting pipeline is used for exhausting gas.
And the gas taking separation module is used for allowing gas to enter the gas collection chamber after passing through the gas inlet electromagnetic valve, the H2 sensor, the methane sensor and the acetylene sensor are used for identifying gas components and converting the gas components into electric signals to be uploaded to the gas analysis module, and the gas exhaust electromagnetic valve is used for exhausting detected gas after detection.
The remote monitoring module collects the electric signal of the gas analysis module, obtains gas components through analyzing the electric signal, remotely monitors the working state of the gas relay through monitoring software, and gives an alarm when combustible gas exists in the gas. The working power supply is used for providing power for the gas component monitoring and alarming device; and the alarm device is used for sending alarm information when receiving an alarm signal when the monitoring software finds that the gas components contain combustible gas. The communication system is used for completing communication among the working power supply, the alarm device and the monitoring software; and the monitoring software is also used for controlling a valve and an air pump to control the air inlet and exhaust functions of the gas composition monitoring and alarming device.
The working state of the gas relay is remotely monitored by a worker through a monitoring software interface, and the air inlet and exhaust functions in the operating system can be controlled through the control valve and the air pump. The data analysis module analyzes the acquired data: by analyzing the gas components, an alarm is given when combustible gas exists.
Fig. 2 is a schematic structural diagram of a prototype of a gas composition monitoring device, wherein: the device comprises a valve 1, a valve 2, a valve 3, a valve 4, a gas relay 5, a liquid level meter 6, a cylinder 7, a connecting plate 8, an electric push rod 9, an oil pool 10, an oil box 11, an oil-gas separator 12, a liquid level switch 13, a control end 14, a methane sensor 15, an acetylene sensor 16, a hydrogen sensor 17, a gas source 18 and a release valve 19.
The air extraction adopts an electric cylinder as a power element, volume values are extracted through calculation, the stroke required by the air extraction of the cylinder and the stroke corresponding to the volume value required by the extraction of sample gas to be detected are respectively set, a limit switch is set according to the stroke of the electric cylinder, and the electric cylinder can reach the designated position each time through program control, so that the quantitative air exhaust and extraction function is realized.
Before the sample gas enters the sensor, absolute purification of the sample gas is firstly ensured, so that the oil-gas separator is arranged at the front end of the test to ensure that oil vapor mixed in the sample gas is fully filtered, the oil in the sample gas containing the oil is deposited in an oil pool at the bottom of the oil-gas separator by utilizing the gravity of the oil to obtain the sample gas containing the oil vapor, and then the sample gas is filtered by the oil-gas separator to obtain pure sample gas. The filtered oil-gas separator flows out through the valve 3 to realize oil-gas separation.
After the light gas test is finished, pure nitrogen is adopted to flush and purify the pipeline. And the program control valve 4 and the valve 3 are opened to control a certain amount of nitrogen, so that pure nitrogen flows through the valve 4, the three sensors, the liquid level switch, the oil-gas separator and the valve 3, finally, residual sample gas in the gas path of the section is discharged, the valve 4 and the valve 3 are closed in sequence, pure nitrogen is ensured to exist in the section of components and pipelines, and pipeline purification is completed.
The model machine reserves the interface for the synchronous monitoring of hydrogen, acetylene, methane and other gases, adopts the mode that the gas collection box derived gas carries out the monitoring, and gas passes through the gas extraction module, takes out the gas in the gas relay to the cylinder, and later the gas that awaits measuring gets into the sensor group and tests. The result can be tested in 90s by starting the calculation from the light gas alarm signal.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a gas composition monitoring and alarm device which characterized in that includes:
the gas taking and separating module is used for automatically opening the three-way valve by the monitoring and alarming device when light gas alarms, the gas enters the detection pipeline, meanwhile, the oil-gas separator is combined with the electromagnetic valve to discharge oil in the detection pipeline into the oil discharge pool, and the gas enters the gas analysis module after being purified by the oil-gas separator;
the gas analysis module is used for identifying gas components and converting the gas components into electric signals by the combustible gas sensor when gas enters the gas collection chamber through the gas inlet electromagnetic valve, and the gas collection chamber is connected with the combustible gas sensor which stores the electric signals to the gas analysis module;
the remote monitoring module collects the electric signal of the gas analysis module, obtains gas components through analyzing the electric signal, remotely monitors the working state of the gas relay through monitoring software, and gives an alarm when combustible gas exists in the gas.
2. The device of claim 1, wherein the gas extraction and separation module is composed of a three-way pipe, a gas collection box, a pipeline, an oil-gas separator, a solenoid valve and an oil discharge tank;
the three-way pipe is respectively connected with the gas taking port, the gas collecting box and the oil-gas separator; when the three-way valve on the three-way valve is opened, the gas enters the three-way pipe;
the gas collecting box is used for separating gas and oil in the gas; the separated gas and oil enter a pipeline;
a pipeline for transporting gas;
the oil-gas separator is combined with the electromagnetic valve to discharge oil in the pipeline into the oil discharge pool, the oil-gas separator purifies the gas, and the purified gas enters the gas analysis module;
and the oil drainage pool is used for collecting the oil in the pipeline.
3. The apparatus of claim 1, wherein the gas analysis module is comprised of an inlet solenoid valve, a plenum, a combustible gas sensor, a gas analyzer, an exhaust pump, an exhaust solenoid valve, and an exhaust line;
the gas inlet electromagnetic valve is used for allowing gas to enter the gas analysis module after the gas inlet electromagnetic valve is opened;
the gas collection chamber is used for collecting gas entering the gas analysis module;
the combustible gas sensor is used for identifying gas components, converting the gas components into electric signals and uploading the electric signals to the gas analyzer;
the gas analyzer analyzes the components of the gas according to the electric signal sent by the combustible gas sensor;
the exhaust pump is used for improving the exhaust performance of the exhaust electromagnetic valve;
the gas analysis module is used for analyzing the components of the gas, and then the gas analysis module is used for analyzing the components of the gas;
the gas exhausting pipeline is used for exhausting gas.
4. The apparatus of claim 3, wherein the combustible gas sensor comprises: h2 sensor, methane sensor and acetylene sensor.
5. The device of claim 1, wherein the remote monitoring module comprises a working power supply, an alarm device, a communication module and monitoring software;
the working power supply is used for providing power for the gas component monitoring and alarming device;
and the alarm device is used for sending alarm information when receiving an alarm signal when the monitoring software finds that the gas components contain combustible gas.
The communication system is used for completing communication among the working power supply, the alarm device and the monitoring software;
and the monitoring software is also used for controlling a valve and an air pump to control the air inlet and exhaust functions of the gas composition monitoring and alarming device.
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Cited By (3)
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CN113567625A (en) * | 2021-07-22 | 2021-10-29 | 国电南瑞科技股份有限公司 | Automatic free gas measuring device for oil-immersed transformer |
CN113823523A (en) * | 2021-09-30 | 2021-12-21 | 山西沁新能源集团股份有限公司 | Automatic exhaust device for gas relay of rectifier transformer |
CN114137050A (en) * | 2021-11-19 | 2022-03-04 | 国网山东省电力公司电力科学研究院 | Gas composition online monitoring device and method suitable for transformer |
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CN111811894A (en) * | 2020-07-11 | 2020-10-23 | 国网辽宁省电力有限公司电力科学研究院 | Gas on-line detection method and device in power transformer gas relay |
Cited By (4)
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