CN105156885A - SF6 gas charging unit of SF6 electrical device - Google Patents

SF6 gas charging unit of SF6 electrical device Download PDF

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Publication number
CN105156885A
CN105156885A CN201510589206.7A CN201510589206A CN105156885A CN 105156885 A CN105156885 A CN 105156885A CN 201510589206 A CN201510589206 A CN 201510589206A CN 105156885 A CN105156885 A CN 105156885A
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CN
China
Prior art keywords
gas
solenoid valve
controller
pressure value
temperature
Prior art date
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Pending
Application number
CN201510589206.7A
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Chinese (zh)
Inventor
罗涛
孙晓凡
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PHOIBOS TECHNOLOGY Co Ltd
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PHOIBOS TECHNOLOGY Co Ltd
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Priority to CN201510589206.7A priority Critical patent/CN105156885A/en
Publication of CN105156885A publication Critical patent/CN105156885A/en
Pending legal-status Critical Current

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Abstract

The invention provides an SF6 gas charging unit of an SF6 electrical device. The SF6 gas charging unit comprises an SF6 gas tank, a first electromagnetic valve, a first pressure detector, a first controller, a second electromagnetic valve, a second pressure detector, a second controller and a constant-temperature heater, wherein a coating layer doped with a temperature-sensitive color-changing material and a lithium base component material coats the external surface of the SF6 gas tank; the first controller is used for performing gas charging on the SF6 electric device through a gas charging pipeline when the pressure value of the SF6 gas in the SF6 electric device is lower than a first preset pressure threshold; the second controller is used for performing gas injecting on the SF6 gas tank through a gas injecting pipeline by using the external high-pressure SF6 gas when the pressure value of the SF6 gas in the SF6 gas tank is lower than a second preset pressure threshold; the second preset pressure threshold is greater than the first preset pressure threshold; the gas charging pipeline and the gas injecting pipeline are not simultaneously connected at any moment. The SF6 gas charging unit is capable of automatically charging the gas into the SF6 electrical device.

Description

SF 6the SF of electrical equipment 6inflation unit
Technical field
The present invention relates to SF 6gas charge and discharge technical field, particularly relates to a kind of SF 6the SF of electrical equipment 6inflation unit.
Background technique
SF 6(sulphur hexafluoride) gas is a kind of nontoxic, colourless, tasteless, odorless, non-flammable synthetic gas, has the incomparable insulation characterisitic of general electrolyte and arc extinguishing ability, is therefore widely used in SF 6electrical equipment.
At SF 6in the process that electrical equipment uses, work as SF 6sF in electrical equipment 6the force value of gas drops to rating value, needs SF 6electrical equipment is inflated, otherwise can affect SF 6electrical equipment works.The way of prior art is at SF 6electrical equipment arranges pressure gauge, reads manometric force value by human at periodic intervals and judge whether force value drops to rating value.If determine force value to drop to rating value, then by inflating manually.
But most of electric power facility is all that implementation is unattended, so, SF 6when the force value of electrical equipment drops to rating value, cannot learn the very first time, cause and can not inflate in time.And if can not inflate in time, then can cause SF 6electrical equipment non-programmed halt, and then cause power grid accident, there is serious potential safety hazard.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of SF 6the SF of electrical equipment 6inflation unit, can automatically to SF 6electrical equipment is inflated.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of SF 6the SF of electrical equipment 6inflation unit, comprises SF 6gas tank, the first solenoid valve, the first pressure detector, the first controller, the second solenoid valve, the second pressure detector, second controller and constent temperature heater: described SF 6gas tank is for storing high pressure SF 6gas, described SF 6gas tank is communicated with described first solenoid valve and described second solenoid valve, described SF 6the outer surface of gas tank scribbles coating layer, doped with temperature sensitive color change material and lithium-based component material in described coating layer, as described SF 6there is SF in gas tank 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make described coating layer heat up, and cause the variable color of temperature sensitive color change material, described first solenoid valve is by gas ducting and described SF 6the inflation inlet of electrical equipment connects, and described second solenoid valve connects for accessing external high pressure SF 6the aerating pipeline of gas, described first pressure detector is for detecting described SF 6a SF in electrical equipment 6gas pressure value, and by a described SF 6gas pressure value sends to described first controller, described first controller is for receiving a described SF 6gas pressure value, and at a described SF 6when gas pressure value is lower than the first preset pressure threshold value, controls described first solenoid valve and connect described gas ducting, at a described SF 6when gas pressure value is higher than the first preset pressure threshold value, control gas ducting described in described first solenoid valve shuts, described second pressure detector is for detecting described SF 6the 2nd SF in gas tank 6gas pressure value, and by described 2nd SF 6gas pressure value sends to described second controller, described second controller is for receiving described 2nd SF 6gas pressure value, and at described 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, controls described second solenoid valve and connect described aerating pipeline, at described 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, control aerating pipeline described in described second solenoid valve shuts, described constent temperature heater is installed in the outside of described gas ducting, described constent temperature heater comprises switch power, solid-state relay, heating coil, temperature transducer and temperature regulate chip, described heating coil and described temperature transducer are installed in the outside of described gas ducting, the input end of described switch power connects civil power, the cathode output end of described switch power is connected with the positive pole of described solid-state relay, the cathode output end of described switch power is connected with one end of described heating coil, the negative pole of described solid-state relay is connected with the other end of described heating coil, control end and the described temperature of described solid-state relay regulate the control end of chip to be connected, output terminal and the described temperature of described temperature transducer regulate the input end of chip to be connected, wherein, described second preset pressure threshold value is greater than described first preset pressure threshold value, and connects when described gas ducting and described aerating pipeline are different at any time.
Be different from the situation of prior art, the invention has the beneficial effects as follows: by SF 6electrical equipment carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6electrical equipment is inflated, meanwhile, to SF 6gas tank also carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6gas tank carries out aerating, makes SF 6gas tank at any time can to SF 6electrical equipment is inflated, thus can automatically to SF 6electrical equipment is inflated, and ensures SF 6electrical equipment normally works.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention SF 6the SF of electrical equipment 6the structural representation of inflation unit.
Fig. 2 is the structural representation of constent temperature heater in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, be embodiment of the present invention SF 6the SF of electrical equipment 6the structural representation of inflation unit.The SF of the present embodiment 6inflation unit comprises SF 6gas tank 1, first solenoid valve 2, first pressure detector 3, first controller 4, second solenoid valve 5, second pressure detector 6, second controller 7 and constent temperature heater 8.
SF 6gas tank 1 is for storing high pressure SF 6gas, SF 6gas tank 1 is communicated with the first solenoid valve 2 and the second solenoid valve 5.SF 6the outer surface of gas tank 1 scribbles coating layer 11, doped with temperature sensitive color change material and lithium-based component material in coating layer 11, works as SF 6there is SF in gas tank 1 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make coating layer 11 heat up, and cause the variable color of temperature sensitive color change material.Due to SF 6the poor activity of gas own, is difficult to directly and other material generation metachromasias, therefore adulterate in coating layer 11 temperature sensitive color change material and lithium-based component material can judge whether generation SF indirectly 6leakage Gas.
First solenoid valve 2 is by gas ducting 21 and SF 6the inflation inlet of electrical equipment 10 connects.Second solenoid valve 5 connects for accessing external high pressure SF 6the aerating pipeline 51 of gas.
First pressure detector 3 is for detecting SF 6a SF in electrical equipment 10 6gas pressure value, and by a SF 6gas pressure value sends to the first controller 4.
First controller 4 is for receiving a SF 6gas pressure value, and at a SF 6when gas pressure value is lower than the first preset pressure threshold value, controls the first solenoid valve 2 and connect gas ducting 21, at a SF 6when gas pressure value is higher than the first preset pressure threshold value, controls the first solenoid valve 2 and cut off gas ducting 21.
Second pressure detector 6 is for detecting SF 6the 2nd SF in gas tank 1 6gas pressure value, and by the 2nd SF 6gas pressure value sends to second controller 7.
Second controller 7 is for receiving the 2nd SF 6gas pressure value, and at the 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, controls the second solenoid valve 5 and connect aerating pipeline 51, at the 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, controls the second solenoid valve 5 and cut off aerating pipeline 51.
Constent temperature heater 8 is installed in the outside of gas ducting 21, see Fig. 2, is the structural representation of constent temperature heater in Fig. 1.Constent temperature heater 8 comprises switch power 81, solid-state relay 82, heating coil 83, temperature transducer 84 and temperature and regulates chip 85.Heating coil 83 and temperature transducer 84 are installed in the outside of gas ducting 21, the input end of switch power 81 connects civil power, the cathode output end of switch power 81 is connected with the positive pole of solid-state relay 82, the cathode output end of switch power 81 is connected with one end of heating coil 83, the negative pole of solid-state relay 82 is connected with the other end of heating coil 83, control end and the temperature of solid-state relay 82 regulate the control end of chip 85 to be connected, and output terminal and the temperature of temperature transducer 84 regulate the input end of chip 85 to be connected.Temperature regulates chip 85 to send control signal according to the sensing data of temperature transducer 84 to the control end of solid-state relay 82, in order to control conducting and the shutoff of solid-state relay 82, thus controls transfer is to the electric energy of described heating coil 83, realize the heating and temperature control to heating coil 83, be embodied as gas ducting 21 and isoperibol is provided, reduce SF in gas ducting 21 6gas decomposes due to overheating and causes the generation of sulfur-containing compound.
Wherein, the second preset pressure threshold value is greater than the first preset pressure threshold value, and connects when gas ducting 21 and aerating pipeline 51 are different at any time.
By the way, the SF of the embodiment of the present invention 6the SF of electrical equipment 6inflation unit is passed through SF 6electrical equipment carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6electrical equipment is inflated, meanwhile, to SF 6gas tank also carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6gas tank carries out aerating, makes SF 6gas tank at any time can to SF 6electrical equipment is inflated, thus can automatically to SF 6electrical equipment is inflated, and ensures SF 6electrical equipment normally works, and owing to not needing artificial participation, thus reduces cost of equipment maintenance.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (1)

1. a SF 6the SF of electrical equipment 6inflation unit, is characterized in that, comprises SF 6gas tank, the first solenoid valve, the first pressure detector, the first controller, the second solenoid valve, the second pressure detector, second controller and constent temperature heater:
Described SF 6gas tank is for storing high pressure SF 6gas, described SF 6gas tank is communicated with described first solenoid valve and described second solenoid valve, described SF 6the outer surface of gas tank scribbles coating layer, doped with temperature sensitive color change material and lithium-based component material in described coating layer, as described SF 6there is SF in gas tank 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make described coating layer heat up, and cause the variable color of temperature sensitive color change material;
Described first solenoid valve is by gas ducting and described SF 6the inflation inlet of electrical equipment connects, and described second solenoid valve connects for accessing external high pressure SF 6the aerating pipeline of gas;
Described first pressure detector is for detecting described SF 6a SF in electrical equipment 6gas pressure value, and by a described SF 6gas pressure value sends to described first controller;
Described first controller is for receiving a described SF 6gas pressure value, and at a described SF 6when gas pressure value is lower than the first preset pressure threshold value, controls described first solenoid valve and connect described gas ducting, at a described SF 6when gas pressure value is higher than the first preset pressure threshold value, control gas ducting described in described first solenoid valve shuts;
Described second pressure detector is for detecting described SF 6the 2nd SF in gas tank 6gas pressure value, and by described 2nd SF 6gas pressure value sends to described second controller;
Described second controller is for receiving described 2nd SF 6gas pressure value, and at described 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, controls described second solenoid valve and connect described aerating pipeline, at described 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, control aerating pipeline described in described second solenoid valve shuts;
Described constent temperature heater is installed in the outside of described gas ducting, described constent temperature heater comprises switch power, solid-state relay, heating coil, temperature transducer and temperature regulate chip, described heating coil and described temperature transducer are installed in the outside of described gas ducting, the input end of described switch power connects civil power, the cathode output end of described switch power is connected with the positive pole of described solid-state relay, the cathode output end of described switch power is connected with one end of described heating coil, the negative pole of described solid-state relay is connected with the other end of described heating coil, control end and the described temperature of described solid-state relay regulate the control end of chip to be connected, output terminal and the described temperature of described temperature transducer regulate the input end of chip to be connected,
Wherein, described second preset pressure threshold value is greater than described first preset pressure threshold value, and connects when described gas ducting and described aerating pipeline are different at any time.
CN201510589206.7A 2015-09-16 2015-09-16 SF6 gas charging unit of SF6 electrical device Pending CN105156885A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115354312A (en) * 2022-07-29 2022-11-18 北京北方华创微电子装备有限公司 Special gas safety control method and semiconductor process equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN202048356U (en) * 2010-12-13 2011-11-23 山东电力集团公司临沂供电公司 Portable multipurpose sulfur hexafluoride electric equipment air charging device
CN102788242A (en) * 2012-08-23 2012-11-21 昆山宝宏机械有限公司 Air storage tank capable of automatically aerating
CN204005218U (en) * 2014-08-27 2014-12-10 山东电力设备有限公司 Transformer body store status on-line monitoring system
CN104390132A (en) * 2014-10-16 2015-03-04 国家电网公司 Multifunctional SF6 steel cylinder aerating apparatus
CN104534274A (en) * 2015-01-19 2015-04-22 国家电网公司 SF6 automatic air inflation device and automatic air inflation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN202048356U (en) * 2010-12-13 2011-11-23 山东电力集团公司临沂供电公司 Portable multipurpose sulfur hexafluoride electric equipment air charging device
CN102788242A (en) * 2012-08-23 2012-11-21 昆山宝宏机械有限公司 Air storage tank capable of automatically aerating
CN204005218U (en) * 2014-08-27 2014-12-10 山东电力设备有限公司 Transformer body store status on-line monitoring system
CN104390132A (en) * 2014-10-16 2015-03-04 国家电网公司 Multifunctional SF6 steel cylinder aerating apparatus
CN104534274A (en) * 2015-01-19 2015-04-22 国家电网公司 SF6 automatic air inflation device and automatic air inflation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115354312A (en) * 2022-07-29 2022-11-18 北京北方华创微电子装备有限公司 Special gas safety control method and semiconductor process equipment
CN115354312B (en) * 2022-07-29 2023-10-13 北京北方华创微电子装备有限公司 Special gas safety control method and semiconductor process equipment

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Application publication date: 20151216