CN111306449A - Micro-water monitoring and processing system for GIS (gas insulated switchgear) transformer substation - Google Patents

Micro-water monitoring and processing system for GIS (gas insulated switchgear) transformer substation Download PDF

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Publication number
CN111306449A
CN111306449A CN201911341796.6A CN201911341796A CN111306449A CN 111306449 A CN111306449 A CN 111306449A CN 201911341796 A CN201911341796 A CN 201911341796A CN 111306449 A CN111306449 A CN 111306449A
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CN
China
Prior art keywords
pipeline
gas
micro
recovery
outlet
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Pending
Application number
CN201911341796.6A
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Chinese (zh)
Inventor
万婷婷
王川
岳万泉
齐恒
张颖
丁霞
韩凤阳
刘博�
孙畅
李梅
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Tulufan Power Supply Co Of State Grid Xinjiang Electric Power Co ltd
State Grid Corp of China SGCC
Original Assignee
Tulufan Power Supply Co Of State Grid Xinjiang Electric Power Co ltd
State Grid Corp of China SGCC
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Application filed by Tulufan Power Supply Co Of State Grid Xinjiang Electric Power Co ltd, State Grid Corp of China SGCC filed Critical Tulufan Power Supply Co Of State Grid Xinjiang Electric Power Co ltd
Priority to CN201911341796.6A priority Critical patent/CN111306449A/en
Publication of CN111306449A publication Critical patent/CN111306449A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0341—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/039—Localisation of heat exchange separate on the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0642—Composition; Humidity
    • F17C2250/0657—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Abstract

The invention discloses a micro-water monitoring and processing system for a GIS (geographic information System) transformer substation, which can be used for carrying out micro-water detection on sulfur hexafluoride gas in a GIS equipment gas chamber and carrying out ventilation on the sulfur hexafluoride gas in the GIS equipment gas chamber with over-standard micro-water. The invention comprises a four-way valve connected with a GIS equipment air chamber interface of a GIS equipment air chamber; a second outlet pipeline of the four-way valve is connected with the gas chamber interface of the GIS equipment through a second outlet gas path joint; the four-way valve is also provided with a first outlet pipeline, a third outlet pipeline and a fourth outlet pipeline; the first outlet pipeline, the third outlet pipeline and the fourth outlet pipeline are respectively connected with a main discharge pipeline, a sulfur hexafluoride gas-filled pipeline and a nitrogen gas-filled pipeline; the four branches are respectively a micro-water detection pipeline, a sulfur hexafluoride recovery pipeline, a vacuumizing pipeline and a nitrogen gas discharge pipeline; the micro-water detection pipeline is provided with a micro-water detection assembly, and the vacuumizing pipeline is provided with a vacuumizing pump.

Description

Micro-water monitoring and processing system for GIS (gas insulated switchgear) transformer substation
Technical Field
The invention relates to a micro-water treatment system, which is particularly used for detecting and treating the micro-water content of sulfur hexafluoride gas in a gas chamber of GIS equipment of a GIS substation.
Background
At present, GIS electrical equipment is widely applied to the power sector, and rapid development of the power industry is promoted. In recent years, with the rapid development of economy, the capacity of a power system in China is rapidly expanded, and the amount of GIS electrical equipment is more and more. The core insulating gas in the GIS is SF6Gas, sulfur hexafluoride gas in high voltage electrical apparatusIn installations for arc extinction and insulation, SF in high-voltage electrical installations6If the micro water content of the gas exceeds the standard and the density is reduced, the safe operation of the GIS high-voltage electrical equipment is seriously influenced:
1) when the temperature is reduced, excessive moisture can form condensed water, so that the surface insulation strength of the insulation part is obviously reduced, and even flashover is caused, thereby causing serious harm.
2)SF6The reduction of the gas density to a certain extent will result in a loss of insulation and arc extinguishing properties. Therefore, the grid operating regulations impose that the SF must be applied before and during the operation of the plant6The density and water content of the gas are periodically measured. To ensure SF6Reliable operation of electrical equipment, improvement of continuous and reliable operation capability of power system, realization of on-line state detection, monitoring and fault prediction of performance of electrical equipment, and realization of SF6There is an important direction of research in the application of electrical equipment.
Therefore, the micro-water detection of the GIS substation is very important, and the regular detection is also one of the operation and maintenance work of the substation; in the prior art, detection and treatment are respectively carried out, gas replacement is carried out only when exceeding standards are found after dew point instrument detection is adopted, sulfur hexafluoride gas meeting the standard requirements is filled, and original gas with trace water exceeding standards is replaced by the most common and effective mode; the whole detection treatment consumes a large amount of time, the detail degree design of the replacement process is not reasonable enough, and the replacement gas is not recovered, so that the environmental pollution is caused; details of the displacement process include whether to pull a vacuum, whether to flush with nitrogen, and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a micro-water monitoring and processing system for a GIS substation, aiming at the defects in the prior art, which can detect the micro-water of sulfur hexafluoride gas in a GIS equipment gas chamber and ventilate the sulfur hexafluoride gas in the GIS equipment gas chamber with the micro-water exceeding.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the micro-water monitoring and processing system for the GIS transformer substation comprises a four-way valve connected with a GIS equipment air chamber interface of a GIS equipment air chamber; a second outlet pipeline of the four-way valve is connected with the gas chamber interface of the GIS equipment through a second outlet gas path joint; the four-way valve is also provided with a first outlet pipeline, a third outlet pipeline and a fourth outlet pipeline;
the first outlet pipeline, the third outlet pipeline and the fourth outlet pipeline are respectively connected with a main discharge pipeline, a sulfur hexafluoride gas-filled pipeline and a nitrogen gas-filled pipeline;
the four branches are respectively a micro-water detection pipeline, a sulfur hexafluoride recovery pipeline, a vacuumizing pipeline and a nitrogen gas discharge pipeline; the far ends of the micro-water detection pipeline and the sulfur hexafluoride recovery pipeline are connected to a recovery filtering pipeline, and the far end of the recovery filtering pipeline is connected with a recovery filtering interface of the gas recovery assembly; a recovery filtering component and a sulfur hexafluoride recovery gas cylinder are sequentially arranged on a recovery filtering interface of the gas recovery component; the far ends of the vacuumizing pipeline and the nitrogen gas discharge pipeline are connected to a recovery interface of the gas recovery assembly, and a mixed gas recovery gas cylinder is arranged on the recovery interface of the gas recovery assembly;
the micro-water detection pipeline is provided with a micro-water detection assembly, and the vacuumizing pipeline is provided with a vacuumizing pump;
electromagnetic valves and one-way pumps are arranged on the sulfur hexafluoride gas charging pipeline, the nitrogen gas charging pipeline, the micro-water detection pipeline, the sulfur hexafluoride recovery pipeline, the vacuumizing pipeline and the nitrogen gas discharge pipeline, wherein the electromagnetic valves and the one-way pumps are arranged on two sides of a micro-water detection assembly of the micro-water detection pipeline and two sides of a vacuumizing pump of the vacuumizing pipeline;
the micro-water detection assembly comprises a shell communicated with a micro-water detection pipeline, a detection air chamber is arranged in the shell, a first butt flange and a second butt flange which are used for butt joint with the micro-water detection pipeline are respectively arranged on two sides of the detection air chamber, a first butt joint and a second butt joint are respectively arranged in the first butt flange and the second butt flange, and the first butt joint and the second butt joint are respectively communicated with the detection air chamber;
the gas detection device is characterized by also comprising a monitoring assembly for monitoring the gas in the detection gas chamber, wherein the monitoring assembly comprises a sleeve, the bottom of the sleeve is connected with the upper part of the packaging joint, the lower part of the packaging joint is connected with a substrate, and the substrate is perpendicular to the packaging joint; a humidity sensor is arranged on the first side of the substrate, and a pressure sensor is arranged on the second side of the substrate;
a circuit board is arranged in the sleeve and is connected with the fan, the electric connector and the substrate;
the electric joint is arranged at the top end of the sleeve and outputs a micro water value and a pressure value; the humidity sensor, the pressure sensor and the fan are positioned in the detection air chamber; the fan is arranged at the bottom of the packaging connector and blows air to the substrate; the humidity sensor is arranged on one surface, facing the opening of the fan, of the substrate, and the pressure sensor is arranged on the surface, opposite to the fan, of the substrate.
As a preferred embodiment of the present invention: the fan comprises an air inlet and an air outlet, and the air inlet is arranged on the side, opposite to the packaging connector, of the fan; the air outlet faces the substrate; the rotating shaft of the fan is perpendicular to the packaging connector; the direction of the air inlet of the fan is vertical to the direction of the air outlet.
As a preferred embodiment of the present invention: the device also comprises a controller which is in control connection with the electromagnetic valve, the vacuum pumping pump and the micro-water detection assembly.
As a preferred embodiment of the present invention: a sealing ring is arranged at the contact position of the packaging joint and the shell; the sealing ring is an ethylene propylene diene monomer sealing ring; the detection air chamber is made of titanium alloy.
As a preferred embodiment of the present invention: the recovery filtering component comprises a molecular sieve drying unit, an oil-gas separation unit, a dust particle filtering unit and SF which are sequentially communicated through pipelines6A toxic gas decomposition filtering unit; the molecular sieve drying unit is provided with a heating part, the heating part is an electric heating part, the molecular sieve drying unit, the oil-gas separation unit, the dust particle filtering unit and the SF6The poison gas decomposing and filtering unit is arranged in the high-pressure cylinder sleeve; the two ends of the pipeline extend to the outside of the high-pressure cylinder sleeve to form inlets respectivelyA line and an outlet line.
The invention has the beneficial effects that:
the invention discloses a micro-water monitoring and processing system for a GIS (geographic information System) transformer substation, which comprises a four-way valve connected with a GIS equipment air chamber interface of a GIS equipment air chamber; a second outlet pipeline of the four-way valve is connected with the gas chamber interface of the GIS equipment through a second outlet gas path joint; the four-way valve is also provided with a first outlet pipeline, a third outlet pipeline and a fourth outlet pipeline; according to the invention, the connection of a plurality of pipelines of the GIS equipment air chamber is realized through the connection of the four-way valve, so that very detailed micro-water monitoring and micro-water treatment processes can be realized; specifically, the discharge main pipeline is used for realizing detailed treatment during exhaust, and the nitrogen filling pipeline is used for filling nitrogen to completely replace sulfur hexafluoride gas in a GIS equipment gas chamber; the sulfur hexafluoride filling pipeline is used for filling sulfur hexafluoride gas;
the micro-water detection pipeline on the main discharge pipeline is specially used for micro-water detection; the sulfur hexafluoride recovery pipeline is used for intensively recovering sulfur hexafluoride gas to the gas recovery assembly when the sulfur hexafluoride gas is discharged; the vacuumizing pipeline is used for thoroughly vacuumizing the inside of the GIS equipment, so that the gas chamber of the GIS equipment can be thoroughly emptied; the nitrogen discharge pipeline is used for discharging the filled nitrogen;
the far ends of the micro-water detection pipeline and the sulfur hexafluoride recovery pipeline are connected to a recovery filtering pipeline, and the far end of the recovery filtering pipeline is connected with a recovery filtering interface of the gas recovery assembly; a recovery filtering component and a sulfur hexafluoride recovery gas cylinder are sequentially arranged on a recovery filtering interface of the gas recovery component; the far ends of the vacuumizing pipeline and the nitrogen gas discharge pipeline are connected to a recovery interface of the gas recovery assembly, and a mixed gas recovery gas cylinder is arranged on the recovery interface of the gas recovery assembly; therefore, the invention not only has the function of recovering gas, but also is purposefully recovered, and the gas discharged by trace water detection and sulfur hexafluoride is filtered and then recovered for reuse; the gas discharged by nitrogen and the gas discharged by vacuumizing are directly recycled, the nitrogen of the part of gas accounts for most and has no recycling value, and the recycled gas is transported and treated in a centralized way.
The micro-water detection assembly comprises a shell communicated with a micro-water detection pipeline, wherein a detection air chamber is arranged in the shell, a first butt flange and a second butt flange which are used for butt joint with the micro-water detection pipeline are respectively arranged on two sides of the detection air chamber, a first butt joint and a second butt joint are respectively arranged in the first butt flange and the second butt flange, and the first butt joint and the second butt joint are respectively communicated with the detection air chamber; the structure of the micro-water detection assembly designed by the invention is connected in series on a micro-water detection pipeline, so that the assembly is very convenient, the butt joint flange is used for assembly, and the butt joint air connector is used for reliable sealing connection of an air path; the butt joint gas head is a self-sealing joint and is communicated after being matched with a connector on the micro-water detection pipeline.
The monitoring assembly comprises a sleeve, wherein the bottom of the sleeve is connected with the upper part of a packaging joint, the lower part of the packaging joint is connected with a substrate, and the substrate is vertical to the packaging joint; a humidity sensor is arranged on the first side of the substrate, and a pressure sensor is arranged on the second side of the substrate; the invention detects micro water by a humidity sensor in a detection chamber, and is provided with a pressure sensor to detect gas pressure; the invention also quickly blows the disturbed air in the detection chamber to the humidity sensor through the fan, so that the detection of the humidity sensor is more accurate.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of one embodiment of a micro-water detecting assembly according to the present invention;
FIG. 3 is a schematic structural view of one embodiment of a recovery filter assembly of the present invention;
FIG. 4 is a schematic view of an installation structure of the four-way valve of the present invention.
Description of reference numerals:
1-a gas recovery assembly, 2-a micro water detection assembly, 3-a vacuum pump, 4-a micro water detection pipeline, 5-a sulfur hexafluoride recovery pipeline, 6-a vacuum pump pipeline, 7-a nitrogen discharge pipeline, 9-a four-way valve, 10-a one-way pump, 11-a solenoid valve, 12-a GIS equipment air chamber, 13-a sulfur hexafluoride air cylinder, 14-a nitrogen air cylinder, 15-a discharge main pipeline, 16-a GIS equipment air chamber interface, 17-a sulfur hexafluoride gas charge pipeline, 18-a nitrogen gas charge pipeline, 19-a recovery filter pipeline, 20-a recovery pipeline, 21-a recovery filter interface, 22-a recovery interface, 23-a recovery filter assembly and 24-a sulfur hexafluoride recovery air cylinder; 28-mixed gas recovery cylinder; 31-humidity sensor, 32-pressure sensor, 33-fan, 34-substrate, 35-packaging joint, 36-sealing ring, 37-first pair of joint, 38-second pair of joint, 39-detection air chamber, 40-sleeve, 41-electrical joint;
90-plug, 91-first outlet pipeline, 92-GIS equipment air chamber interface, 93-second outlet pipeline, 94-first outlet air path joint, 95-valve body assembly, 96-third outlet pipeline, 97-equipment air path joint, 98-fourth outlet pipeline and 99-fourth outlet air path joint;
231-a heating component, 232-a molecular sieve drying unit, 233-an oil-gas separation unit, 234-a dust particle filtering unit, 235-a sulfur hexafluoride decomposition poison gas filtering unit, 236-a high-pressure cylinder sleeve, 237-an inlet pipeline and 238-an outlet pipeline;
331-fan air inlet, 332-fan air outlet.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
as shown in fig. 1 to 4, which illustrate an embodiment of the present invention, as shown in the drawings, the micro water monitoring and processing system for a GIS substation of the present invention includes a four-way valve 9 connected to a GIS equipment air chamber interface 16 of a GIS equipment air chamber 12; a second outlet pipeline 93 of the four-way valve 9 is connected with the GIS equipment air chamber interface through a second outlet air path joint 94; the four-way valve 9 is also provided with a first outlet pipeline 91, a third outlet pipeline 96 and a fourth outlet pipeline 98;
the first outlet pipeline, the third outlet pipeline and the fourth outlet pipeline are respectively connected with a main discharge pipeline 15, a sulfur hexafluoride inflation pipeline 17 and a nitrogen inflation pipeline 18;
the main discharge pipeline 15 is connected in parallel with four branches, wherein the four branches are a micro-water detection pipeline 4, a sulfur hexafluoride recovery pipeline 5, a vacuum pumping pipeline 6 and a nitrogen discharge pipeline 7 respectively; the far ends of the micro-water detection pipeline and the sulfur hexafluoride recovery pipeline are connected to a recovery filtering pipeline 19, and the far end of the recovery filtering pipeline is connected with a recovery filtering interface 21 of the gas recovery assembly; a recovery filtering component 23 and a sulfur hexafluoride recovery gas cylinder 24 are sequentially arranged on the recovery filtering interface 21 of the gas recovery component 1; the far ends of the vacuumizing pipeline and the nitrogen gas discharge pipeline are connected to a recovery interface 22 of the gas recovery assembly 1, and a mixed gas recovery gas bottle 28 is arranged on the recovery interface 22 of the gas recovery assembly;
the micro water detection pipeline 4 is provided with a micro water detection assembly 2, and the vacuum pumping pipeline is provided with a vacuum pumping pump 3;
the sulfur hexafluoride gas charging pipeline, the nitrogen gas charging pipeline, the micro-water detection pipeline, the sulfur hexafluoride recovery pipeline, the vacuumizing pipeline and the nitrogen gas discharging pipeline are all provided with an electromagnetic valve 11 and a one-way pump 10, wherein the electromagnetic valve and the one-way pump are arranged on two sides of a micro-water detection assembly of the micro-water detection pipeline and two sides of a vacuumizing pump of the vacuumizing pipeline; the electromagnetic valves and the one-way pumps are arranged on two sides to reliably prevent backflow;
the micro-water detection assembly 2 comprises a shell communicated with a micro-water detection pipeline, a detection air chamber 39 is arranged in the shell, a first butt flange and a second butt flange which are used for butt joint with the micro-water detection pipeline are respectively arranged on two sides of the detection air chamber, a first butt joint 37 and a second butt joint 38 are respectively arranged in the first butt flange and the second butt flange, and the first butt joint and the second butt joint are respectively communicated with the detection air chamber;
the gas detection device also comprises a monitoring component for monitoring the gas in the detection gas chamber, wherein the monitoring component comprises a sleeve 40, the bottom of the sleeve is connected with the upper part of a packaging connector 35, the lower part of the packaging connector 35 is connected with a substrate 34, and the substrate is perpendicular to the packaging connector; a humidity sensor 31 is arranged on the first side of the substrate, and a pressure sensor 32 is arranged on the second side of the substrate;
a circuit board is arranged in the sleeve and is connected with the fan 33, the electric connector 41 and the substrate 34;
the electric joint is arranged at the top end of the sleeve and outputs a micro water value and a pressure value; the humidity sensor, the pressure sensor and the fan are positioned in the detection air chamber; the fan is arranged at the bottom of the packaging connector and blows air to the substrate; the humidity sensor is arranged on one surface, facing the opening of the fan, of the substrate, and the pressure sensor is arranged on the surface, opposite to the fan, of the substrate.
Preferably, as shown in fig. 2: the fan comprises an air inlet and an air outlet, and the air inlet is arranged on the side, opposite to the packaging connector, of the fan; the air outlet faces the substrate; the rotating shaft of the fan is perpendicular to the packaging connector; the direction of the air inlet of the fan is vertical to the direction of the air outlet.
Preferably, as shown in fig. 1: the device also comprises a controller which is in control connection with the electromagnetic valve, the vacuum pumping pump and the micro-water detection assembly. The invention provides a controller as a preferred embodiment, which aims to realize basic function circuit conduction control, namely the conduction work of a corresponding air circuit and a corresponding function by controlling the switch of each electromagnetic valve, and is beneficial to realizing the work of only detection, only ventilation and the like by programming common functions and pressing buttons, so that the degree of automation is high, and the efficiency is improved.
Preferably, as shown in fig. 2: a sealing ring is arranged at the contact position of the packaging joint and the shell; the sealing ring is an ethylene propylene diene monomer sealing ring; the detection air chamber is made of titanium alloy. The sealing ring is a reliable seal between the vertical sleeve and the horizontal shell; the stability of the titanium alloy detection air chamber is better.
Preferably, as shown in fig. 3: the recovery filtering component comprises a molecular sieve drying unit 232, an oil-gas separation unit 233, a dust particle filtering unit 234 and SF which are sequentially communicated through pipelines6A decomposed toxic gas filtering unit 235; the molecular sieve drying unit is provided with a heating part 231, and the heating part is an electric heating part; the molecular sieve drying unit, the oil-gas separation unit, the dust particle filtering unit and the SF6 decomposed toxic gas filtering unit are arranged in the high-pressure cylinder sleeve 236; the two ends of the pipeline extend to the outside of the high-pressure cylinder sleeve to form an inlet pipeline and an outlet pipeline respectively. The recovery filtering component can fully recoverAbsorption of SF6Water molecules and molecular sieve in gas can be reused for infinite times, oil and gas can be separated, and SF can be separated6Solid impurities in the gas are removed, toxic gas in the decomposition product is absorbed, the purification effect is obvious, and resources are saved. The high-pressure cylinder sleeve provided by the invention can ensure the effect of recovery and filtration and prevent leakage.
While the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes, which relate to the related art known to those skilled in the art and fall within the scope of the present invention, can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Claims (5)

1. A little water monitoring processing system for GIS transformer substation, its characterized in that: the four-way valve is connected with a gas chamber interface of the GIS equipment; a second outlet pipeline of the four-way valve is connected with the gas chamber interface of the GIS equipment through a second outlet gas path joint; the four-way valve is also provided with a first outlet pipeline, a third outlet pipeline and a fourth outlet pipeline;
the first outlet pipeline, the third outlet pipeline and the fourth outlet pipeline are respectively connected with a main discharge pipeline, a sulfur hexafluoride gas-filled pipeline and a nitrogen gas-filled pipeline;
the four branches are respectively a micro-water detection pipeline, a sulfur hexafluoride recovery pipeline, a vacuumizing pipeline and a nitrogen gas discharge pipeline; the far ends of the micro-water detection pipeline and the sulfur hexafluoride recovery pipeline are connected to a recovery filtering pipeline, and the far end of the recovery filtering pipeline is connected with a recovery filtering interface of the gas recovery assembly; a recovery filtering component and a sulfur hexafluoride recovery gas cylinder are sequentially arranged on a recovery filtering interface of the gas recovery component; the far ends of the vacuumizing pipeline and the nitrogen gas discharge pipeline are connected to a recovery interface of the gas recovery assembly, and a mixed gas recovery gas cylinder is arranged on the recovery interface of the gas recovery assembly;
the micro-water detection pipeline is provided with a micro-water detection assembly, and the vacuumizing pipeline is provided with a vacuumizing pump;
electromagnetic valves and one-way pumps are arranged on the sulfur hexafluoride gas charging pipeline, the nitrogen gas charging pipeline, the micro-water detection pipeline, the sulfur hexafluoride recovery pipeline, the vacuumizing pipeline and the nitrogen gas discharge pipeline, wherein the electromagnetic valves and the one-way pumps are arranged on two sides of a micro-water detection assembly of the micro-water detection pipeline and two sides of a vacuumizing pump of the vacuumizing pipeline;
the micro-water detection assembly comprises a shell communicated with a micro-water detection pipeline, a detection air chamber is arranged in the shell, a first butt flange and a second butt flange which are used for butt joint with the micro-water detection pipeline are respectively arranged on two sides of the detection air chamber, a first butt joint and a second butt joint are respectively arranged in the first butt flange and the second butt flange, and the first butt joint and the second butt joint are respectively communicated with the detection air chamber;
the gas detection device is characterized by also comprising a monitoring assembly for monitoring the gas in the detection gas chamber, wherein the monitoring assembly comprises a sleeve, the bottom of the sleeve is connected with the upper part of the packaging joint, the lower part of the packaging joint is connected with a substrate, and the substrate is perpendicular to the packaging joint; a humidity sensor is arranged on the first side of the substrate, and a pressure sensor is arranged on the second side of the substrate;
a circuit board is arranged in the sleeve and is connected with the fan, the electric connector and the substrate;
the electric joint is arranged at the top end of the sleeve and outputs a micro water value and a pressure value; the humidity sensor, the pressure sensor and the fan are positioned in the detection air chamber; the fan is arranged at the bottom of the packaging connector and blows air to the substrate; the humidity sensor is arranged on one surface, facing the opening of the fan, of the substrate, and the pressure sensor is arranged on the surface, opposite to the fan, of the substrate.
2. The micro water monitoring and processing system for the GIS substation according to claim 1, wherein: the fan comprises an air inlet and an air outlet, and the air inlet is arranged on the side, opposite to the packaging connector, of the fan; the air outlet faces the substrate; the rotating shaft of the fan is perpendicular to the packaging connector; the direction of the air inlet of the fan is vertical to the direction of the air outlet.
3. The micro water monitoring and processing system for the GIS substation according to claim 1, wherein: the device also comprises a controller which is in control connection with the electromagnetic valve, the vacuum pumping pump and the micro-water detection assembly.
4. The micro water monitoring and processing system for the GIS substation according to claim 1, wherein: a sealing ring is arranged at the contact position of the packaging joint and the shell; the sealing ring is an ethylene propylene diene monomer sealing ring; the detection air chamber is made of titanium alloy.
5. The micro water monitoring and processing system for the GIS substation according to claim 1, wherein: the recovery filtering component comprises a molecular sieve drying unit, an oil-gas separation unit, a dust particle filtering unit and SF which are sequentially communicated through pipelines6A toxic gas decomposition filtering unit; the molecular sieve drying unit is provided with a heating part, the heating part is an electric heating part, and the electric heating part is electrically connected with the controller; the frame is also provided with a power distribution cabinet; the molecular sieve drying unit, the oil-gas separation unit, the dust particle filtering unit and the SF6The poison gas decomposing and filtering unit is arranged in the high-pressure cylinder sleeve; the two ends of the pipeline extend to the outside of the high-pressure cylinder sleeve to form an inlet pipeline and an outlet pipeline respectively.
CN201911341796.6A 2019-12-24 2019-12-24 Micro-water monitoring and processing system for GIS (gas insulated switchgear) transformer substation Pending CN111306449A (en)

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Application publication date: 20200619