CN212492206U - SF (sulfur hexafluoride)6Online processing device for exceeding water content - Google Patents
SF (sulfur hexafluoride)6Online processing device for exceeding water content Download PDFInfo
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- CN212492206U CN212492206U CN202020446362.4U CN202020446362U CN212492206U CN 212492206 U CN212492206 U CN 212492206U CN 202020446362 U CN202020446362 U CN 202020446362U CN 212492206 U CN212492206 U CN 212492206U
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Abstract
The invention discloses an SF6The online processing device for exceeding the moisture content comprises a detection device, a drying device and a control system, wherein the detection device detects SF6The output end of the gas moisture content in a GIS chamber of the electrical equipment is connected to the control system; and the control system controls the drying device to dry the gas in the GIS chamber according to the detected moisture content of the gas. The invention has the advantages that: can be used for SF6The water in the equipment is automatically detected and processed, so that SF is ensured6The water content of the equipment meets the requirement, and the water content exceeding the standard is eliminated to bring about the operation of the equipmentRisk, reduced power off time of equipment, and improved SF6Reliability of the device power supply; and this scheme possesses simple structure, realizes conveniently and with low costs on automated inspection and processing moisture content.
Description
Technical Field
The invention relates to the field of equipment maintenance,in particular to an SF6And a water content exceeding online processing device.
Background
SF6The electric appliance is sealed by units such as a circuit breaker, a disconnecting switch, a grounding switch, a mutual inductor, a bus, an inlet and outlet wire sleeve or a cable connecting piece and the like and is filled with a certain pressure SF6The metal shell of the gas is called as gas insulated switch equipment or the equipment is combined together to be called as a totally enclosed combined electrical appliance. The gas medium used is SF with excellent insulating property and arc extinguishing property6Gas, not only meets the requirement of no oil, but also meets the requirement of miniaturization, and the prior SF6Electrical appliances have been widely used.
SF6Whether the gas moisture is qualified is the relationship SF6One of the key indicators for whether the electrical appliance can safely and reliably operate is the current SF6After the electric appliance is put into operation, the compartment SF of part of the equipment is caused by various reasons6Gas water exceeding standard, SF6After the moisture of the electric appliance exceeds the standard, the insulation part is greatly damaged and needs to be treated in time, but SF (sulfur hexafluoride) is caused by factors such as difficult power failure of most running equipment, long moisture treatment period and the like6The treatment work of the electrical appliance with the excessive water content is difficult to be carried out in time and is SF6The safe operation of the electric appliance brings hidden troubles. According to the present situation, we have developed an on-line automatic processing apparatus to eliminate SF6The potential safety operation hazard of the equipment caused by the excessive moisture of the electrical appliance is realized, and simultaneously, the SF is realized6Zero emission of gas, safety and environmental protection.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide SF6An online processing device for exceeding the water content for SF6The water in the equipment is automatically detected and eliminated.
In order to achieve the purpose, the invention adopts the technical scheme that: SF (sulfur hexafluoride)6The online processing device for exceeding the moisture content comprises a detection device, a drying device and a control system, wherein the detection device detects SF6The output end of the gas moisture content in a GIS chamber of the electrical equipment is connected to the control system; the control system is based on the detectionThe moisture content of the obtained gas is used for controlling a drying device to dry the gas in the GIS chamber.
The detection device comprises a detection element and an analysis processing element, wherein the detection element sends detected moisture data to the analysis processing element, and the analysis processing element analyzes the moisture content according to the data and sends the moisture content to the control system.
The detection device is communicated with the GIS chamber through a pipeline and used for detecting the moisture content of gas in the GIS chamber, a detection control electromagnetic valve used for controlling the communication with the GIS chamber is arranged in the pipeline, and the detection control electromagnetic valve is connected with the control system and used for being turned off according to the control of the control system.
The drying device comprises a drying system, a compressor, a gas inlet electromagnetic valve and a gas outlet electromagnetic valve, wherein the drying system is connected with a GIS chamber through a pipeline and the gas inlet electromagnetic valve and is used for communicating the GIS chamber with the drying system after the gas inlet electromagnetic valve is opened; the drying system is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and a pipeline; the drying system is used for adsorbing water through the adsorption element; the output end of the control system is respectively connected with the compressor, the gas inlet electromagnetic valve and the gas outlet electromagnetic valve.
The drying system includes: an adsorption element for absorbing water and a water treatment system for discharging water in the adsorption element.
The drying system comprises a closed drying chamber, the drying chamber is connected with a GIS chamber through a pipeline and a gas inlet electromagnetic valve, and the GIS chamber is communicated with the drying chamber after the gas inlet electromagnetic valve is opened; the drying chamber is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and the pipeline.
The moisture processing system comprises a heating module for heating the adsorption element and a vacuum pump for discharging water vapor in the drying chamber, and the heating module and the vacuum pump are respectively connected with the control system and are used for working according to the control of the control system.
And a vacuum degree sensor is arranged in the drying chamber, is connected with the control system and is used for transmitting detected vacuum degree data to the control system.
And air pressure sensors are arranged on a pipeline detected by the GIS chamber and the detection device and a pipeline between the GIS chamber and the drying system, and the output end of each air pressure sensor is connected with the control system and used for controlling the closing of the electromagnetic valve when the air pressure exceeds a set threshold value.
The control system comprises a control unit and a human-computer interaction interface, and the human-computer interaction interface is connected with the control unit.
The invention has the advantages that: can be used for SF6The water in the equipment is automatically detected and processed, so that SF is ensured6The water content of the equipment meets the requirement, the risk of the overproof water content to the operation of the equipment is eliminated, the power-off time of the equipment is reduced, and the SF is improved6Reliability of the device power supply; and this scheme possesses simple structure, realizes conveniently and with low costs on automated inspection and processing moisture content.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic view of an on-line treatment apparatus according to the present invention.
The labels in the above figures are: 1. a first electric valve; 2. an electric valve II; 3. an electric valve III; 4. An electric valve IV; 5. and an electric valve V.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
As shown in FIG. 1, a SF6The online processing device for exceeding water content comprises a detection device, a drying device and a control system, wherein the detection device detects SF6The output end of the gas moisture content in a GIS chamber of the electrical equipment is connected to the control system; and the control system controls the drying device to dry the gas in the GIS chamber according to the detected moisture content of the gas. When the water content is detected to exceed the set water content threshold value through the automatic detection of the detection device, the water supply device is turned onOver-control starting the drying device to remove SF6The moisture in the GIS chamber of the equipment is dried, thereby meeting the requirement of SF6The drying of the equipment has no water requirement.
Detection device, mainly for detecting SF6The water content in the gas, which is mainly used for detection; its implementation may include two ways: the first is that the detection device comprises a detection element and an analysis processing element, the detection element is used for detecting the moisture content and sending data to the analysis processing element, the analysis processing element adopts a special data processing chip to convert the data into digital signals and send the digital signals to the control system, and the control system controls the starting of the drying device according to the moisture data after acquiring the data, the detection device can be realized by adopting a KD6300E dew-point moisture detection device, and the SF data acquisition device is realized by adopting a KD 638978 dew-point moisture detection device6The detection range of water in the gas is 80-2000 ppm, SF6The signal detection sensitivity of the moisture sensor in the gas is +/-4 percent (FS), and SF is collected6The sensor data is communicated to the control system unit using the DL/T860 protocol (or other protocol). The detection device is communicated with the GIS chamber through a pipeline and used for detecting the moisture content of gas in the GIS chamber, a detection control electromagnetic valve used for controlling the communication with the GIS chamber is arranged in the pipeline, and the detection control electromagnetic valve is connected with the control system and used for being turned off according to the control of the control system. As shown in fig. 1, the detection control electromagnetic valve corresponding diagram includes five electric valves 5, two electric valves 2, one electric valve 1, wherein the GIS chamber is a sealed cavity, it sets up the opening and passes through the pipe connection electric valve 1, the electric valve 1 passes through the pipe in proper order through electric valve 2, electric valve 5 is connected with detection device, after control system control electric valve 1, 2, 5 are opened, the GSI chamber passes through the pipe and is communicated with detection device, thereby make detection device's detecting element can detect moisture content data. And secondly, moisture sensing can be directly adopted, the moisture sensor is arranged in a GIS room, the moisture sensor sends data to the control system in a limited or wireless mode, the control system detects that moisture exceeds a set threshold value, and the control system controls the drying device to start to dry the data in the GIS room.
The drying device comprises a drying system, a compressor, a gas inlet electromagnetic valve and a gas outlet electromagnetic valve, wherein the drying system is connected with the GIS chamber through a pipeline and the gas inlet electromagnetic valve and is used for communicating the GIS chamber with the drying system after the gas inlet electromagnetic valve is opened; the drying system is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and a pipeline; the drying system is used for adsorbing water through the adsorption element; the output end of the control system is respectively connected with the compressor, the gas inlet electromagnetic valve and the gas outlet electromagnetic valve.
The drying system is actually a closed cavity-drying chamber, and an adsorption element arranged in the drying chamber for absorbing moisture (the adsorption element is a molecular sieve for distinguishing molecules of different substances by adsorption priority and size, and is an aluminosilicate microporous crystal mainly composed of Al2O3 and other materials, the molecular sieve adsorbs the substances from physical adsorption, the cavities of the crystal have strong polarity and coulomb field, and the molecular sieve has strong adsorption capacity for polar molecules (such as water molecules) and unsaturated molecules, the pore size distribution of the molecular sieve is very uniform, only the substances with the molecular diameter smaller than the cavity diameter can enter the cavities of the molecular sieve, the molecules with different molecular sizes are separated, namely the molecular sieve has the function of sieving the water molecules, the device generally adopts 44 and 54 molecular sieves, so that the adsorption to the water molecules can be satisfied), the moisture processing system is used for discharging the dried moisture to the outside of the drying chamber, and specifically comprises a heating module for heating the adsorption element and a vacuum pump for discharging water vapor in the drying chamber, wherein the heating module and the vacuum pump are respectively connected with the control system and are used for working according to the control of the control system.
The closed drying chamber is mainly used for the gas SF6The gas is dried, and its inside sets up the adsorption element who is used for adsorbing vapor moisture content, and its concrete connection principle includes: the drying chamber sets up the gas outlet of admitting air, should admit air the gas outlet and connect the inlet end of compressor and the one end of electric valve four 4 respectively, and the other end of electric valve four is connected to the gas pipeline between electric valve two and the electric valve five 5 on, and the end of giving vent to anger of compressor is connected at electric valve through electric valve 3And on the gas pipeline between the second electric valve and the fifth electric valve 5, the third electric valve 3 belongs to a one-way conduction electric valve, and the conduction direction of the electric valve is from the compressor to the electric valve 3. Or the air outlet end of the compressor is connected with the air inlet and outlet electrovalve 1 of the GIS chamber through a pipeline and an electrovalve III arranged on the pipeline, and the electrovalve 4 is connected with the electrovalve 1 through the pipeline, so that the GIS chamber is communicated with the drying chamber through different pipeline paths by controlling the opening and closing of the electrovalve. Namely, the drying chamber is connected with the GIS chamber through a pipeline and a gas inlet electromagnetic valve, and the GIS chamber is communicated with the drying chamber after the gas is opened and enters the electromagnetic valve; the drying chamber is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and the pipeline. The electric valves 1, 2, 3, 4 and 5 on the pipeline and the compressor are all started and controlled by a control system; the compressor has the main function of returning the dried gas in the drying chamber to the GIS chamber, and can also adopt an electric gas pump to pump the gas from the drying chamber to the GIS chamber.
And a vacuum degree sensor is arranged in the drying chamber, is connected with the control system and is used for sending detected vacuum degree data to the control system and controlling whether the vacuum pump works or not according to the vacuum degree by the control system.
And the output end of the air pressure sensor is connected with the control system and used for controlling the electromagnetic valve to be closed when the air pressure exceeds a set threshold value so as to prevent abnormal faults of the air pressure. The control system comprises a control unit and a human-computer interaction interface, and the human-computer interaction interface is connected with the control unit. The man-machine interaction unit can display the inspection data in real time and set a starting button to manually start the drying function of the system, namely the control system comprises a display screen, a button and a control unit, and the control unit is realized by a Siemens PLC controller commonly used in the industrial field, such as a processor of s7-200 series.
In order to overcome SF in GIS equipment6The invention provides a device for processing SF on line, which solves the problem that the gas moisture exceeds the standard and needs to be processed in a power failure mode6Gas waterThe operation is simple and the use is convenient. Providing online running of SF in GIS equipment6The device for treating the gas with excessive moisture can reduce the power failure time of equipment and improve the power supply reliability. The device mainly comprises a compressor, a drying system, a vacuum pump, a detection device and a control system. Can carry out online moisture treatment, and has simple operation and convenient use. The invention thoroughly solves the problem of SF when power failure is needed6The problem of water treatment is possible and effective, and a feasible measure is provided for improving the power supply reliability. The invention has the characteristics of low cost, simple and convenient use, obvious application effect and the like, thereby having general popularization significance. After the implementation of the invention, through multiple verification on site, the invention not only has simple and convenient use, but also improves the working efficiency on site and obtains good effect. The working principle of the device is shown in figure 1, and the online moisture treatment device consists of a compressor, a drying system, a vacuum pump, a detection device and a control system.
1、SF6The online moisture processing device is connected with a valve 1 of a GIS air chamber through a pipeline, after the valve 1 is opened, a start button of a control system is clicked, and SF6The online moisture treatment device starts to work;
2. the control system gives a command to open valve 2 and start SF at the same time6A moisture detecting element;
3. after the detection element is started normally, the control system opens the valve 5 to start detecting SF in the GIS equipment6Moisture content of the gas;
4. if the gas moisture content is qualified, stopping processing signals for the control system; if the gas moisture content is unqualified, a signal is sent to a control system to start processing;
5. if SF6The water content exceeds the standard, the control system opens the valve 4, and the gas with the water content exceeding the standard enters a drying system for drying;
6. after the set time of the control system is reached, closing the valve 4, opening the valve 3, starting the compressor, and exhausting the gas in the drying system;
7. the control system starts the evaporator to dry the drying system (the time can be set);
8. starting a vacuum pump, and stopping the vacuum pump after detecting that the vacuum of the drying system is qualified;
9. the control system opens the V4 valve to work repeatedly;
10. until SF is detected6If the moisture content in the gas is qualified, giving a signal for stopping the control system;
wherein the valve 5 is a micro valve, and the gas flow is tightly used for measurement; a pressure monitoring meter is arranged on a pipeline near the valve 1 to monitor pipeline pressure, the control system is abnormally reduced to close the valve 1, and the pressure of a GIS air chamber is guaranteed.
The application mainly utilizes a detection element to detect whether the moisture exceeds the standard or not and controls a drying device to dry the moisture after the moisture exceeds the standard, and the online processing method comprises the following steps:
1. a starting step: starting the online processing device through a start button in the control system, and opening electric valves (including a first electric valve 1, a second electric valve 2 and a fifth electric valve 5) by the control system after detecting a start button signal so that the GIS room is communicated with the detection device;
2. a detection step: the detection device detects water content data in the gas communicated with the GIS room and sends the water content data to the control system for processing; judging whether the moisture exceeds the standard;
3. and (3) drying: after the moisture exceeds the set moisture threshold, closing the electromagnetic valve 5 and the electric electromagnetic valve 3, opening the electromagnetic valve 4, opening the electromagnetic valve 1 and the electromagnetic valve 2, and keeping the duration of the time reaching a set time threshold t1, and keeping the duration of the opening time reaching t 1; closing the electric valve 4 and the electric valve 5, opening the electric valve 1, the electric valve 2 and the electric valve 3, and starting the compressor to dry the SF in the chamber6Pumping out the gas and feeding back the gas to the GIS room along a pipeline; completing the drying step;
4. a drying chamber dehydration step: after the drying step is finished, the control system controls the heating module to be started, the adsorption module is heated to change the adsorbed moisture into water vapor, and after the continuous heating time reaches a set heating time threshold value, the vacuum pump is started to pump the water vapor out of the drying chamber; ready for the next drying. The vacuum pump is controlled by the controller according to the vacuum degree parameter.
And repeating the steps until the detection device detects that the moisture meets the preset requirement, and stopping the drying device. The control system can also set a regular period to start the drying step, and after the drying step is started, whether the drying step is carried out is determined according to the moisture of the detection device, so that the full-automatic drying starting can be realized. The vacuum pump pumps out moisture in the drying chamber in a vacuumizing mode, so that when the next work is dry, gas in the GIS chamber flows to the drying chamber to be dried due to pressure difference, and the gas is circulated until the requirements are met. The heating device can also adopt an evaporator to heat the adsorption element so as to evaporate the adsorbed moisture.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (10)
1. SF (sulfur hexafluoride)6The online processing device with the water exceeding is characterized in that: comprises a detection device, a drying device and a control system, wherein the detection device detects SF6The output end of the gas moisture content in a GIS chamber of the electrical equipment is connected to the control system; and the control system controls the drying device to dry the gas in the GIS chamber according to the detected moisture content of the gas.
2. An SF as in claim 16The online processing device with the water exceeding is characterized in that: the detection device comprises a detection element and an analysis processing element, wherein the detection element sends detected moisture data to the analysis processing element, and the analysis processing element analyzes the moisture content according to the data and sends the moisture content to the control system.
3. An SF according to claim 1 or 26The online processing device with the water exceeding is characterized in that: the detection device is communicated with the GIS chamber through a pipeline and is used for detecting the moisture content of gas in the GIS chamber, a detection control electromagnetic valve used for controlling the communication with the GIS chamber is arranged in the pipeline, and the detection control electromagnetic valve is used for detecting the moisture content of the gas in the GIS chamberThe measuring control electromagnetic valve is connected with the control system and used for being turned off according to the control of the control system.
4. An SF according to claim 1 or 26The online processing device with the water exceeding is characterized in that: the drying device comprises a drying system, a compressor, a gas inlet electromagnetic valve and a gas outlet electromagnetic valve, wherein the drying system is connected with a GIS chamber through a pipeline and the gas inlet electromagnetic valve and is used for communicating the GIS chamber with the drying system after the gas inlet electromagnetic valve is opened; the drying system is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and a pipeline; the drying system is used for adsorbing water through the adsorption element; the output end of the control system is respectively connected with the compressor, the gas inlet electromagnetic valve and the gas outlet electromagnetic valve.
5. An SF as in claim 46The online processing device with the water exceeding is characterized in that: the drying system includes: an adsorption element for absorbing water and a water treatment system for discharging water in the adsorption element.
6. An SF as in claim 46The online processing device with the water exceeding is characterized in that: the drying system comprises a closed drying chamber, the drying chamber is connected with a GIS chamber through a pipeline and a gas inlet electromagnetic valve, and the GIS chamber is communicated with the drying chamber after the gas inlet electromagnetic valve is opened; the drying chamber is connected with the compressor and is communicated with the GIS chamber through the compressor, the gas discharge electromagnetic valve and the pipeline.
7. An SF as in claim 56The online processing device with the water exceeding is characterized in that: the moisture processing system comprises a heating module for heating the adsorption element and a vacuum pump for discharging water vapor in the drying chamber, and the heating module and the vacuum pump are respectively connected with the control system and are used for working according to the control of the control system.
8. An SF as in claim 76The online processing device with the water exceeding is characterized in that: and a vacuum degree sensor is arranged in the drying chamber, is connected with the control system and is used for transmitting detected vacuum degree data to the control system.
9. An SF as in claim 46The online processing device with the water exceeding is characterized in that: and air pressure sensors are arranged on a pipeline detected by the GIS chamber and the detection device and a pipeline between the GIS chamber and the drying system, and the output end of each air pressure sensor is connected with the control system and used for controlling the closing of the electromagnetic valve when the air pressure exceeds a set threshold value.
10. An SF according to claim 1 or 26The online processing device with the water exceeding is characterized in that: the control system comprises a control unit and a human-computer interaction interface, and the human-computer interaction interface is connected with the control unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389173A (en) * | 2020-03-31 | 2020-07-10 | 马鞍山钢铁股份有限公司 | SF6 moisture content excess online processing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389173A (en) * | 2020-03-31 | 2020-07-10 | 马鞍山钢铁股份有限公司 | SF6 moisture content excess online processing device |
| CN111389173B (en) * | 2020-03-31 | 2024-06-21 | 马鞍山钢铁股份有限公司 | SF6 water content exceeding on-line treatment device |
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