CN106710787B - Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage - Google Patents
Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage Download PDFInfo
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- CN106710787B CN106710787B CN201611191565.8A CN201611191565A CN106710787B CN 106710787 B CN106710787 B CN 106710787B CN 201611191565 A CN201611191565 A CN 201611191565A CN 106710787 B CN106710787 B CN 106710787B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/225—Multiple stage diffusion
- B01D53/226—Multiple stage diffusion in serial connexion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/45—Compounds containing sulfur and halogen, with or without oxygen
- C01B17/4507—Compounds containing sulfur and halogen, with or without oxygen containing sulfur and halogen only
- C01B17/4515—Compounds containing sulfur and halogen, with or without oxygen containing sulfur and halogen only containing sulfur and fluorine only
- C01B17/453—Sulfur hexafluoride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage, including online sulfur hexafluoride leakage alarm, self-closed bleeding point device, mixed gas pump drainage pipeline, circulation filtering pipeline, air detaches return pipeline, gas recovery double purification pipeline and mobile sulfur hexafluoride reclaiming clean device, online sulfur hexafluoride leakage alarm is arranged in pressure change chamber, rectangular air hole is offered on the floor of pressure change chamber, self-closed bleeding point device is located at below the floor of pressure change chamber and is arranged on the outside of air hole, the outlet side of inlet end and air the separation return pipeline of mixed gas pump drainage pipeline is connected by self-closed bleeding point device with air hole；When leakage accident occurs, the present invention realizes SF in space6The filtering of gas and its derivative, recycling and by the SF of recycling6The large quantity of air simple separation mixed in gas, and the function that the gas after separation is stored, meet the provisions of laws and regulations that emergency plan for accidents occurs.
Description
Technical field
The invention belongs to behind transformer safety running technology field more particularly to a kind of leakage of underground substation transformer six
Sulfur fluoride gas Emergency recovery cleaning system.
Background technology
With the Development of Urbanization of China, big city population is more intensive, and skyscraper stands in great numbers, and electricity consumption sharply increases,
Number transformer is also being continuously increased, and traditional large capacity oil-immersed transformer oil mass is big, once because failure is easily caught fire, it will be to height
Layer building and the security of the lives and property of people form serious threat.Therefore, in six-component force balance after the 1960s
Transformer has been widely used in Urban Underground substation of China.Compared with traditional filling transformer, SF6Transformer has
Clear advantage：Due to SF6The non-combustible and not combustion-supporting property of gas, SF6Gas does not have the potentially possible of fire, and noise is low, special
It is not suitble to use in bustling commercial center and densely populated residential block.Such as Beijing, Shanghai, Guangzhou are populous, land used
Nervous High-Density Urban Area all has underground substation, wherein being exactly that the six-component force balance applied becomes electric appliance.
With the development of the city, people are more next to requirements such as Supply Security, power supply reliability and city environmental protections
It is higher, prevent emergency processing means accordingly this requires people have the failure of six-component force balance transformer, prevent pernicious
The generation of accident.
SF6Gas-insulated performance is although superior, still, stringent quality must be carried out to it according to related regulatory requirements and is supervised
It superintends and directs and safety management.This is because SF6Gas is in its production process or under the action of the high energy factor, if generation can be decomposed
Toxic or even hypertoxic, strong corrosive objectionable impurities is done, when there are moisture, air in system（Oxygen）, electrode material, equipment and materials
Deng, then can lead to the complication of decomposable process, cause the value volume and range of product of decomposition product significantly to increase, harmfulness also significantly plus
Greatly.
SF6A series of chemical equations that gas occurs under high temperature, arcing are as follows：
SF6The harm of gaseous impurity is mainly manifested in the toxicity and corrosivity of its decomposition product, SF6Impurity in gas
And decomposition product middle acid substance particularly HF, SO2Presence can cause the corrosion of sulfur hexafluoride insulation electrical equipment material；Water
The presence divided, may cause electric property to deteriorate under certain condition（The various electric arc decomposition products and SF of sulfur hexafluoride gas6Gas
Body generates hydrogen fluoride by hydrolysis（HF）And sulfuric acid（H2SO4）, corrosiveness can be generated to certain metal objects and insulating part, and then
Generate the service life of leakage contribution electrical equipment）Or even cause serious equipment breakdown.And present in sulfur hexafluoride such as
SF4、SOF2、SF2、SO2F2, HF etc. be toxicity and the extremely strong compound of corrosivity, do great harm to human body, and it is possible that cause
Pernicious personal injury.
Due to six-component force balance transformer manufacturing quality, mounting process, sealing element aging, the blowing pressure etc.,
The leakage of SF6 gases is difficult to avoid that in six-component force balance transformer.Six-component force balance transformer once leaks
Failure, in sulfur hexafluoride gas will largely escape, low layer is empty indoors for the SF6 gases and its decomposition product leaked out
Between gather, cause ischaemia and with poison, serious damage formed to the maintenance got in and the health of tour personnel.
A large amount of leakages occur for six-component force balance transformer when emergencies, and the common processing method of substation is,
After leakage alarm sends out warning, staff should withdraw rapidly scene, if being happened at indoor location place, answer in opening chamber and lead to
Wind apparatus will be between indoor sulfur hexafluoride gas.Do not wear a gas mask or positive-pressure air respirator personnel no admittance.
Only by sufficient natural exhaust or air draft is forced, and pass through SF6Leakage monitoring system monitors SF6Gas, oxygen content reach
During mark, personnel are just accurate to be entered.
But if leakage failure occurs for the underground substation six-component force balance transformer positioned at down town, and above-mentioned processing should
Very improper to scheme, down town is dense population areas, if underground substation is still selected after leakage failure occurs
With the measure of ventilation, it will cause serious consequence, SF6The complicated decomposition production produced in gas and equipment During Process of Long-term Operation
Object will pollute ground air, such as SF4、SOF2、SF2、SO2F2, HF etc. be toxicity and the extremely strong compound of corrosivity, can be right
Ground crowd generates body harm, and it is possible that causes pernicious personal injury.
So underground substation six-component force balance transformer once breaks down, it be in a short period of time to interior
Sulfur hexafluoride gas in space is recycled, and stores it in and subsequent processing is waited in container, so that gas is made to leak thing
Therefore scene is rapidly achieved the state that can be repaired.
（Subsequent processing, according to the relevant laws and regulations of power industry, otherwise the sulfur hexafluoride gas recycling in electrical equipment is again sharp
With or discharge." to the sulfur hexafluoride gas to be recycled, purified treatment need to be carried out, can be made after reaching new gas standard
With.To discharging exhaust gas, need to make purified treatment in advance（The method for such as using Alkali absorption）, after reaching national environmental protection required standard, side
It can discharge.”《Sulfur hexafluoride analytical technology》）
Not only there is sulfur hexafluoride gas in the space of underground substation six-component force balance transformer leakage failure and its divide
Solve object, also a large amount of air, SF6Decomposition product in gas can be removed it using the methods of filtering, absorption, in space
SF6Gas（General content is 5%-10%）And large quantity of air（More than 90%）Mixing, due to air do not allow it is compressible（Air faces
Boundary's pressure is 37.69MPa, critical-temperature 132.45K；SF645.55 DEG C of the critical-temperature of gas, critical pressure are
3.759MPa）, it is difficult to mixed gas be liquefied, if the volume of compressed mixed gas will be caused very by not removing air
Greatly, there are many storage container, and many troubles are brought to subsequent processing.
At this stage, for underground substation SF6Mixed gas meets an urgent need back in insulating transformer Sudden Leakage failure rear chamber
Receiving unit, there are no relevant products both at home and abroad.
Invention content
The present invention provides a kind of reasonable design, easy to operation, safe and reliable to solve shortcoming of the prior art
Underground substation transformer leakage after sulfur hexafluoride gas Emergency recovery cleaning system.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Hexafluoro after underground substation transformer leakage
Change sulphur gas Emergency recovery cleaning system, including online sulfur hexafluoride leakage alarm, self-closed bleeding point device, gaseous mixture
Body pump drainage pipeline, air separation return pipeline, gas recovery double purification pipeline and mobile sulfur hexafluoride reclaiming clean device,
Online sulfur hexafluoride leakage alarm is arranged in pressure change chamber, rectangular air hole is offered on the floor of pressure change chamber, automatically
Closing bleeding point device is located at below the floor of pressure change chamber and is arranged on the outside of air hole, the inlet end of mixed gas pump drainage pipeline
The outlet side that return pipeline is detached with air is connected by self-closed bleeding point device with air hole；
Mixed gas exhaust pipe road is disposed with electric butterfly valve, toxic and harmful gas in advance by inlet end to outlet side
Manage retracting device, centrifugal blower, whirlpool compressor, water separation device, preceding buffer tank, the first solenoid valve, air separator, second
Solenoid valve, the first check valve, rear buffer tank, third solenoid valve, expansion joint, the first pressure regulation needle-valve, the first compressor, second are unidirectionally
Valve, the 4th solenoid valve and sulfur hexafluoride gas storage device；
Air separator is equipped with mixed gas import, sulfur hexafluoride gas outlet, recyclegas outlet and air discharge
Mouthful, mixed gas import and sulfur hexafluoride gas outlet on air separator are connected to mixed gas exhaust pipe road, air
The air outlet of inlet end and air separator for detaching return pipeline connects, and air detaches return pipeline by inlet end to going out
Gas end is disposed with third check valve, the 5th solenoid valve and air blower；
Sulfur hexafluoride gas storage device includes being sequentially connected in series six holding vessels on mixed gas exhaust pipe road, adjacent
Mixed gas exhaust pipe road between two holding vessels is all provided with there are one the 6th solenoid valve, is equipped at least on each holding vessel
One spare interface, is all provided with that there are one first pressure gauge and first safety valve, mixed gas pump drainages at the top of each holding vessel
The first detection pipe and recovery tube are connected on the holding vessel that the outlet side of pipeline is connected, the first detection pipe is equipped with second
Pressure regulation needle-valve, the end of the first detection pipe are equipped with the first quick connector, and recovery tube is equipped with third pressure regulation needle-valve, and recovery tube goes out
Gas end is connect with the inlet end of mobile sulfur hexafluoride reclaiming clean device；
A double purification branch pipe is respectively connected at the top of six holding vessels, be all provided on every double purification branch pipe there are one
7th solenoid valve, the outlet side of six roots of sensation double purification branch pipe pass through double purification supervisor's series connection, gas recovery double purification
The inlet end of pipeline is connected with double purification supervisor, buffer tank and the before the outlet side of gas recovery double purification pipeline is connected to
Mixed gas exhaust pipe between one solenoid valve on the road, the 8th solenoid valve is provided on gas recovery double purification pipeline.
Further include circulation filtering pipeline, the recyclegas outlet on the inlet end and air separator of circulation filtering pipeline connects
It connects, the outlet side of circulation filtering pipeline is connected to the mixed gas exhaust pipe road between centrifugal blower and whirlpool compressor, follows
Ring filter pipeline is provided with the 4th check valve.
It is set at the top of buffer tank afterwards there are one second pressure gauge and second safety valve, the second inspection is connected on rear buffer tank
Test tube, the second detection pipe are equipped with the 4th pressure regulation needle-valve, and the end of the second detection pipe is equipped with the second quick connector.
Mixed gas exhaust pipe road is connected with the second compressor with the first compressor parallel.
Self-closed bleeding point device includes four adjustable height supporting legs, and four adjustable height supporting leg upper ends, which are fixed, to be set
It puts there are one rectangular lower frame, a plurality of uprights is vertically equipped on lower frame, all the upper end of the column have been fixedly connected with
One width is equal to lower frame and length is less than the upper frame of lower frame, is equipped between upper frame and lower frame and is located at adjacent upright posts
Between hound, surrounding correspondence is fixed with two block length risers and two pieces of short risers, long riser on the outside of upper frame and lower frame
Length be more than the length of air hole, the length of short riser is more than the width of air hole, two block length risers and two pieces of short risers
Upper edge keeps flushing and being provided with rubber weather strip on a circle, the lower surface sealing on the floor of upper rubber weather strip and pressure change chamber
It connects and is located at around air hole；
Mounting bracket is provided on lower frame on the outside of one piece of short riser, is offered on another piece of short riser on lower frame
For connecting the mounting hole of the outlet side of the inlet end of mixed gas pump drainage pipeline and air separation return pipeline, mounting bracket top
Rotation is equipped with fixed pulley, and mounting bracket outer lower portion is fixed with motor and speed reducer, the power output end of motor and speed reducer
Power intake connects, and the power output end of speed reducer is coaxial to be provided with reel, and drawstring is wound on reel；Lower frame
It is interior equipped with the cross bar being fixedly connected with short riser lower edge, the longer two sides bottom of lower frame is along the distance between two cross bars
Be uniformly provided with it is several engaging lug, each pair of engaging lug or so is correspondingly arranged, one pair of which engaging lug and a beam contact are each pair of
A shaft is rotatably connected between engaging lug, is fixed with rectangular sealing plate in every shaft along its length, every piece
The width of sealing plate is equal to the distance between two adjacent groups lifting lug, and the longer two sides bottom of lower frame is between two cross bars
It is provided with the lower rubber weather strip that can coordinate with sealing plate face seal；One is fixed on the side in the same direction of every piece of sealing plate
Connecting rod, the outer end of drawstring are connect across short riser with all connecting rods successively.
Every adjustable height supporting leg includes horizontally disposed support plate, and support plate is set on the ground by foundation bolt,
A screw rod is vertically fixed on support plate, casing and the clamp nut below casing, lower frame are threaded on screw rod
Frame bottom is fixed with bearing block, and sleeve upper end is connect by the pressure bearing coordinated in bearing block with lower frame rotational support.
Toxic and harmful gas pretreatment retracting device includes the dust filter unit being arranged in series and decomposition product filter；Moisture
It is made of from device two separators being arranged in series.
Using above-mentioned technical proposal, the present invention is specifically applied to underground substation, have multiple transformers in pressure change chamber, every
Air hole is offered on the bottom plate of the lower section of a transformer, corresponding each air hole is respectively provided with a self-closed bleeding point dress
It puts, and mixed gas pump drainage pipeline and air separation return pipeline connect respectively with the mounting hole on self-closed bleeding point device
It connects.
After underground substation six-component force balance transformer leakage failure occurs, sulfur hexafluoride its derivative meeting in space
It is collected with dedicated self-closed bleeding point device, and by being stored after the exhausting of centrifugal blower, scroll air compressor, filtering
Into preceding buffer tank.Since the volume of preceding buffer tank compares very little for the indoor sulfur hexafluoride gas leaked out, so, it is preceding
Mixed gas in buffer tank needs to handle as early as possible, and the sulfur hexafluoride gas mixture leaked in the interior space is collected with complete.
Not only there is sulfur hexafluoride in the mixed gas collected after the six-component force balance transformer leakage failure of underground substation
Gas and its decomposition product, also a large amount of air, SF6Decomposition product in gas is filtered out by poisonous and harmful pretreatment unit,
Then the moisture filter in mixed gas is fallen, remaining gas is SF6Mixed gas（General content is 5%-10%）With it is a large amount of
Air（More than 90%）, due to air do not allow it is compressible（The critical pressure of air is 37.69MPa, critical-temperature 132.45K；
45.55 DEG C of the critical-temperature of SF6 gases, critical pressure 3.759MPa）, it is difficult to mixed gas be liquefied, if not removing air
The volume that will cause compressed mixed gas is very big, and there are many storage container, and many troubles are brought to subsequent processing, this
It just needs to separate air by sulfur hexafluoride gas air separation module.
Sulfur hexafluoride gas air separator uses two-stage film separation system, to SF6Gas carries out two-stage separation, can obtain
The SF of higher concentration6Gas.Gas enters level-one film first, and air is detached inside membrane, then the SF after level-one separation6Gas
The secondary membrane that body enters continues to detach, at this point, the concentration of the sulfur hexafluoride gas after two level UF membrane about 70%（Volume
Than）, which is converted into gas-liquid coexistence state under the action of liquid compressor, and is stored into rear buffer tank.
Specific works of the present invention in use, underground substation six-component force balance transformer leakage failure occur when,
Line sulfur hexafluoride leakage alarm sends out alarm signal, the electric motor starting of self-closed bleeding point device, and motor drives speed reducer,
Speed reducer drives reel rotation, reel take-up, and drawstring pulls all connecting rods, and connecting rod drives sealing plate to be rotated up two
The gas-permeable channels being encircled between block length riser and two pieces of short risers block.At the same time, the electricity of mixed gas exhaust pipe road
Dynamic butterfly valve, toxic and harmful gas pretreatment retracting device, centrifugal blower, whirlpool compressor and water separation device are opened, from
Under the action of heart wind turbine, the indoor mixed gas of transformation is first pumped to toxic and harmful gas pretreatment retracting device（Mainly include
Dust filter unit and decomposition product filter, filtering accuracy≤0.01 μm, can anti-dust and solid granulates enter whirlpool compressor, prolong
Long service life of equipment）It is pre-processed, the mixed gas gone after chalk dust removing, solid particulate matter and pernicious gas decomposition product passes through again
The effect of whirlpool compressor, mixed gas enter the large quantity of moisture in separation mixed gas in water separation device, then use
The impurity such as decomposition product, moisture, mineral oil in molecular sieve absorption principle processing mixed gas, before then mixed gas enters
Buffer tank memory storage.After preceding buffer tank memory storage to certain pressure, the first solenoid valve is opened, mixed gas enters air separation
It is detached in device, the pure air after separation enters back into pressure change chamber under the action of air blower by air separation return pipeline
Interior, the sulfur hexafluoride gas for also carrying more steam after separation is returned to the air inlet of whirlpool compressor by circulation filtering pipeline
End carries out steam separation and is detached with air again, and concentration reaches 70% sulfur hexafluoride gas and enters rear buffer tank memory storage, can
With the concentration for sulfur hexafluoride gas of being tested by the gas in buffer tank after the acquisition of the second quick connector.Buffer tank stores afterwards
After fast full, third solenoid valve and the 6th solenoid valve are opened, opens the first compressor and the/the second compressor（When needs increase back
During rate of producing effects, the first compressor and the second compressor can be opened simultaneously）, sulfur hexafluoride gas mixture enters in six holding vessels
Storage.Until online sulfur hexafluoride leakage alarm stop alarm, the present invention stops.Mobile sulfur hexafluoride reclaiming clean
Sulfur hexafluoride gas mixture in six holding vessels is extracted out and further carries out purified treatment by device.
The sulfur hexafluoride gas mixture being stored into six holding vessels is due to there is the air of certain content, if desired into one
Step detaches air, can open the 8th solenoid valve and simultaneously or separately open the 7th electromagnetism on six roots of sensation double purification branch pipe
Valve, the sulfur hexafluoride gas mixture in holding vessel are re-introduced into air separator, carry out air detached job again, finally
It is stored into again in six holding vessels, the concentration of sulfur hexafluoride gas can be further improved in this way, reduce air content.Thus
The pretreatment that the profound purification operation of sulfur hexafluoride gas has been carried out before mobile sulfur hexafluoride reclaiming clean device is equivalent to,
Mitigate the intensity of mobile sulfur hexafluoride reclaiming clean device final purification processing.
Self-closed bleeding point device in the present invention is by rotating casing, and casing can move axially along a screw, thus
The height of supporting leg can be adjusted, pressure bearing plays the role of more effortlessly rotating casing, and is avoided in rotating casing
The effect of lower frame movement.When being contacted in the lower surface on upper rubber weather strip with the floor of pressure change chamber and there is certain pressure, twist
Dynamic clamp nut clamp sleeve lower end locks casing.
In transformer normal operation, sealing plate is in opening state, when a failure occurs, underground substation sulfur hexafluoride
When insulating transformer leakage failure occurs, sealing plate seals the gas-permeable channels being encircled between two block length risers and two pieces of short risers
Stifled, it is tight that sealing plate crimps sealing with the lower rubber weather strip of lower frame bottom.After the gas of leakage is exhausted, motor reversal,
Drawstring unclamps, and under the action of sealing plate its own gravity, sealing plate rotates down, and automatically opens, and radiates to ventilating in pressure change chamber.
In conclusion the present invention realizes SF in space6The filtering of gas and its derivative, recycling and by the SF of recycling6Gas
The large quantity of air simple separation mixed in body, and the function that the gas after separation is stored；When leakage accident occurs, the present apparatus
The gas recycling storage that recovery system would leak into space can be started rapidly, meet the laws and regulations that emergency plan for accidents occurs
It is required that；The air and SF carried out before present invention recycling storage6Separation, then can reduce storage container（It compares and does not detach air, store up
It is approximately do not detach air storage volumes 30% to deposit container）, without（Outlet pressure）Very big compressor.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the dimensional structure diagram of self-closed bleeding point device in Fig. 1.
Specific embodiment
As depicted in figs. 1 and 2, the present invention is sulfur hexafluoride gas Emergency recovery purification after underground substation transformer leakage
System, including online sulfur hexafluoride leakage alarm 1, self-closed bleeding point device 2, mixed gas pump drainage pipeline 3, air point
From return pipeline 4, gas recovery double purification pipeline 5 and mobile sulfur hexafluoride reclaiming clean device 6, online sulfur hexafluoride is let out
Leakage alarm 1 is arranged in pressure change chamber 7, rectangular air hole 8 is offered on the floor of underground substation pressure change chamber 7, automatically
Closing bleeding point device 2 is located at below the floor of pressure change chamber 7 and is arranged on 8 outside of air hole, mixed gas pump drainage pipeline 3 into
Gas end and the outlet side of air separation return pipeline 4 are connected by self-closed bleeding point device 2 with air hole 8.
It is pre- that electric butterfly valve 9, toxic and harmful gas be disposed with by inlet end to outlet side on mixed gas pump drainage pipeline 3
Handle retracting device 10, centrifugal blower 11, whirlpool compressor 12, water separation device 13, preceding buffer tank 14, the first solenoid valve 15,
Air separator 16, second solenoid valve 17, the first check valve 18, rear buffer tank 19, third solenoid valve 20, expansion joint 21, first
Pressure regulation needle-valve 22, the first compressor 23, the second check valve 24, the 4th solenoid valve 84 and sulfur hexafluoride gas storage device 25.
Air separator 16 is equipped with mixed gas import 26, sulfur hexafluoride gas outlet 27,28 and of recyclegas outlet
Air outlet 29, mixed gas import 26 and sulfur hexafluoride gas outlet 27 on air separator 16 are connected to mixed gas
On pump drainage pipeline 3, the inlet end of air separation return pipeline 4 is connect with the air outlet 29 of air separator 16, air point
Third check valve 30, the 5th solenoid valve 31 and air blower 32 are disposed with by inlet end to outlet side from return pipeline 4.
Sulfur hexafluoride gas storage device 25 includes being sequentially connected in series six holding vessels on mixed gas pump drainage pipeline 3
33, it is all provided with that there are one the 6th solenoid valve 34, each holding vessels on the mixed gas pump drainage pipeline 3 between two neighboring holding vessel 33
It is equipped at least one spare interface 35 on 33, each 33 top of holding vessel is all provided with that there are one first pressure gauge 36 and one first
Safety valve 37 is connected with 38 He of the first detection pipe on the holding vessel 33 that the outlet side of mixed gas pump drainage pipeline 3 is connected
Recovery tube 39, the first detection pipe 38 are equipped with the second pressure regulation needle-valve 40, and the end of the first detection pipe 38 is equipped with the first quick connector
41, recovery tube 39 is equipped with third pressure regulation needle-valve 42, the outlet side of recovery tube 39 and mobile sulfur hexafluoride reclaiming clean device 6
Inlet end connection.
The top of six holding vessels 33 is respectively connected with a double purification branch pipe 43, is all provided on every double purification branch pipe 43
There are one the 7th solenoid valve 44,45 series connection, recycling are responsible in the outlet side of six roots of sensation double purification branch pipe 43 by a double purification
The inlet end of gas double purification pipeline 5 is connect with double purification supervisor 45, and the outlet side of gas recovery double purification pipeline 5 connects
On mixed gas pump drainage pipeline 3 before being connected between 14 and first solenoid valve 15 of buffer tank, on gas recovery double purification pipeline 5
It is provided with the 8th solenoid valve 46.
The invention also includes circulation filtering pipeline 47, the inlet end of circulation filtering pipeline 47 and following on air separator 16
Ring gas vent 28 connects, and the outlet side of circulation filtering pipeline 47 is connected to mixing between centrifugal blower 11 and whirlpool compressor 12
It closes on gas pump drainage pipeline 3, circulation filtering pipeline 47 is provided with the 4th check valve 48.
The top of buffer tank 19 is set there are one second pressure gauge 49 and second safety valve 50 afterwards, is connected on rear buffer tank 19
There is the second detection pipe 51, the second detection pipe 51 is equipped with the 4th pressure regulation needle-valve 52, and the end of the second detection pipe 51 is equipped with second soon
Connection-peg 53.
Second compressor 54 in parallel with the first compressor 23 is connected on mixed gas pump drainage pipeline 3.
Self-closed bleeding point device 2 includes four adjustable height supporting legs, and four adjustable height supporting leg upper ends are fixed
Setting is vertically equipped with a plurality of uprights 56 there are one rectangular lower frame 55 on lower frame 55, all 56 upper ends of column are equal
It is fixedly connected with the upper frame 57 for being less than lower frame 55 equal to lower frame 55 and length there are one width, upper frame 57 and lower frame 55
Between be equipped with hound 58 positioned at adjacent upright posts 56 between, upper frame 57 and 55 outside surrounding of lower frame correspond to and are fixed with two
Block length riser 59 and two pieces short riser 60, the length of long riser 59 are more than the length of air hole 8, and the length of short riser 60 is more than thoroughly
The upper edge of the width of stomata 8, two block length risers 59 and two pieces short riser 60 keeps flushing and being provided with rubber seal on a circle
The lower surface on the floor of item 61, upper rubber weather strip 61 and pressure change chamber 7 is tightly connected and is located at around air hole 8.
Mounting bracket 62 is provided on lower frame 55 in the outside of one piece short riser 60, in another piece of short riser on lower frame 55
The installation of the outlet side of the inlet end and air separation return pipeline 4 for connecting mixed gas pump drainage pipeline 3 is offered on 60
Hole 63,62 top rotation of mounting bracket are equipped with fixed pulley 64, and 62 outer lower portion of mounting bracket is fixed with motor 65 and speed reducer 66, electricity
The power output end of machine 65 is connect with the power intake of speed reducer 66, the power output end of speed reducer 66 is coaxial be provided with around
Line wheel 67 is wound with drawstring 68 on reel 67；The cross bar 69 being fixedly connected with short 60 lower edge of riser is equipped in lower frame 55,
The longer two sides bottom of lower frame 55 is uniformly provided with several to engaging lug 70, each pair of connection along the distance between two cross bars 69
Ear 70 or so is correspondingly arranged, and one pair of which engaging lug 70 is contacted with a cross bar 69, is rotatably connected between each pair of engaging lug 70
A piece shaft 71 is fixed with rectangular sealing plate 72, the width of every piece of sealing plate 72 in every shaft 71 along its length
The distance between two adjacent groups lifting lug is equal to, the longer two sides bottom of lower frame 55 is provided between two cross bars 69 can
With the lower rubber weather strip of 72 face seal of sealing plate cooperation；A connecting rod is fixed on the side in the same direction of every piece of sealing plate 72
73, the outer end of drawstring 68 is connect across short riser 60 with all connecting rods 73 successively.
Every adjustable height supporting leg includes horizontally disposed support plate 74, and support plate 74 is arranged on ground by foundation bolt 75
A screw rod 76 is vertically fixed on face, on support plate 74, casing 77 is threaded on screw rod 76 and positioned at 77 lower section of casing
Clamp nut 78,55 bottom of lower frame is fixed with bearing block 79, and 77 upper end of casing passes through the pressure that coordinates in bearing block 79
Bearing is connect with 55 rotational support of lower frame.
Toxic and harmful gas pretreatment retracting device 10 includes the dust filter unit 80 being arranged in series and decomposition product filter
81；Water separation device 13 is made of two separators 82 being arranged in series.
The present invention is specifically applied to underground substation, there is multiple transformers in pressure change chamber 7, in the lower section of each transformer 83
Bottom plate on offer air hole 8, corresponding each air hole 8 is respectively provided with a self-closed bleeding point device 2, and mix
Gas pump drainage pipeline 3 and air separation return pipeline 4 are connect respectively with the mounting hole 63 on self-closed bleeding point device 2.
After six-component force balance transformer 83 leakage failure in underground substation occurs, sulfur hexafluoride its derivative in space
It can be collected with dedicated self-closed bleeding point device 2, and pass through the exhausting of centrifugal blower 11, scroll air compressor, filtering
After be stored into before in buffer tank 14.Since the volume of preceding buffer tank 14 is compared for the indoor sulfur hexafluoride gas leaked out very
It is small, so, the mixed gas in preceding buffer tank 14 needs to handle as early as possible, and the sulfur hexafluoride leaked in the interior space is collected with complete
Mixed gas.
Not only have in the mixed gas collected after 83 leakage failure of underground substation six-component force balance transformer lithium
Sulphur gas and its decomposition product, also a large amount of air, SF6Decomposition product in gas is filtered by poisonous and harmful pretreatment unit
Fall, then fall the moisture filter in mixed gas, remaining gas is SF6Mixed gas（General content is 5%-10%）With it is big
Measure air（More than 90%）, due to air do not allow it is compressible（The critical pressure of air is 37.69MPa, and critical-temperature is
132.45K；45.55 DEG C of the critical-temperature of SF6 gases, critical pressure 3.759MPa）, it is difficult to mixed gas be liquefied, if not
Removing air will cause that the volume of compressed mixed gas is very big, and there are many storage container, be brought very to subsequent processing
Mostly troublesome, this just needs to separate air by sulfur hexafluoride gas air separation module.
Sulfur hexafluoride gas air separator 16 uses two-stage film separation system, to SF6Gas carries out two-stage separation, can obtain
To the SF of higher concentration6Gas.Gas enters level-one film first, and air is detached inside membrane, then the SF after level-one separation6
The secondary membrane that gas enters continues to detach, at this point, the concentration of the sulfur hexafluoride gas after two level UF membrane about 70%（Volume
Than）, which is converted into gas-liquid coexistence state under the action of liquid compressor, and is stored into rear buffer tank 19.
Specific works of the present invention in use, underground substation 83 leakage failure of six-component force balance transformer occur when,
Online sulfur hexafluoride leakage alarm 1 sends out alarm signal, and the motor 65 of self-closed bleeding point device 2 starts, 65 band of motor
Dynamic speed reducer 66, speed reducer 66 drive reel 67 to rotate, and 67 take-up of reel, drawstring 68 pulls all connecting rods 73, connecting rod
73 drive sealing plates 72 are rotated up blocking the gas-permeable channels being encircled between two block length risers 59 and two pieces short riser 60.With
This simultaneously, electric butterfly valve 9 on mixed gas pump drainage pipeline 3, toxic and harmful gas pretreatment retracting device 10, centrifugal blower
11st, whirlpool compressor 12 and water separation device 13 are opened, under the action of centrifugal blower 11, the mixed gas in pressure change chamber 7
First it is pumped to toxic and harmful gas pretreatment retracting device 10（Mainly include dust filter unit 80 and decomposition product filter 81, mistake
Filter precision≤0.01 μm, can anti-dust and solid granulates enter whirlpool compressor 12, extend service life of equipment）Located in advance
Reason, goes effect of the mixed gas after chalk dust removing, solid particulate matter and pernicious gas decomposition product again through whirlpool compressor 12, mixes
Gas enters the large quantity of moisture in separation mixed gas in water separation device 13, is then handled using molecular sieve absorption principle mixed
The impurity such as decomposition product, moisture, the mineral oil in gas are closed, 14 memory storage of buffer tank before then mixed gas enters.It is preceding slow
After depositing 14 memory storage to certain pressure of tank, the first solenoid valve 15 is opened, mixed gas, which is entered in air separator 16, is divided
From, the pure air after separation is entered back by air separation return pipeline 4 in pressure change chamber 7 under the action of air blower 32, point
The sulfur hexafluoride gas for also carrying more steam from after is returned to the inlet end of whirlpool compressor 12 by circulation filtering pipeline 47,
It carries out steam separation again to detach with air, concentration reaches 70% sulfur hexafluoride gas and enters rear 19 memory storage of buffer tank, can be with
Gas after being acquired by the second quick connector 53 in buffer tank 19 is tested the concentration of sulfur hexafluoride gas.Buffer tank 19 afterwards
After storage is fast full, third solenoid valve 20 and the 6th solenoid valve 34 are opened, opens the first compressor 23 and the/the second compressor 54
（When needing to increase organic efficiency, the first compressor 23 and the second compressor 54 can be opened simultaneously）, sulfur hexafluoride gaseous mixture
Body enters six 33 memory storages of holding vessel.Until online 1 stop alarm of sulfur hexafluoride leakage alarm, the present invention stops.
Sulfur hexafluoride gas mixture in six holding vessels 33 is extracted out and further carried out by mobile sulfur hexafluoride reclaiming clean device 6
Purified treatment.
The sulfur hexafluoride gas mixture being stored into six holding vessels 33 due to there is the air of certain content, if desired into
One step detaches air, the 8th solenoid valve 46 can be opened and simultaneously or separately open on six roots of sensation double purification branch pipe 43 the
Seven solenoid valves 44, the sulfur hexafluoride gas mixture in holding vessel 33 are re-introduced into air separator 16, carry out air again
Detached job is finally stored into again in six holding vessels 33, can further improve the concentration of sulfur hexafluoride gas in this way, is reduced
Air content.
By rotating casing 77, casing 77 can move axially self-closed bleeding point device 2 in the present invention along screw rod 76,
The height of supporting leg can be thus adjusted, pressure bearing plays the role of more effortlessly rotating casing 77, and in turning set
The effect that lower frame 55 is avoided to move during pipe 77.It contacts and has with the lower surface on the floor of pressure change chamber 7 in upper rubber weather strip 61
When having certain pressure, turning 78 clamp sleeve of clamp nut, 77 lower end locks casing 77.
In 83 normal operation of transformer, sealing plate 72 is in opening state, when a failure occurs, underground substation hexafluoro
When changing the 83 leakage failure generation of sulphur insulating transformer, sealing plate 72 will be encircled between two block length risers 59 and two pieces short riser 60
Gas-permeable channels block, sealing plate 72 crimp with the lower rubber weather strip of 55 bottom of lower frame seals tightly.The gas quilt of leakage
After exhausting, motor 65 inverts, and drawstring 68 unclamps, and under the action of 72 its own gravity of sealing plate, sealing plate 72 rotates down, automatically
It opens, to ventilation heat dissipation in pressure change chamber 7.
Online sulfur hexafluoride leakage alarm 1 in the present invention, toxic has mobile sulfur hexafluoride reclaiming clean device 6
Evil gas pretreatment retracting device 10, centrifugal blower 11, whirlpool compressor 12, water separation device 13, air separator 16, hexafluoro
It is existing mature technology to change sulphur gas storage device 25, the first compressor and the second compressor, and specific configuration repeats no more.
The present embodiment is every according to this hair not to the limitation of works in any form such as shape, material, the structures of the present invention
Any simple modification, equivalent change and modification that bright technical spirit makees above example, belongs to the technology of the present invention side
The protection domain of case.
Claims (4)
1. sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage, it is characterised in that：Including online
Sulfur hexafluoride leakage alarm, self-closed bleeding point device, mixed gas pump drainage pipeline, air separation return pipeline, recycling
Gas double purification pipeline and mobile sulfur hexafluoride reclaiming clean device, online sulfur hexafluoride leakage alarm are arranged on transformation
Interior offers rectangular air hole on the floor of pressure change chamber, and self-closed bleeding point device is located under the floor of pressure change chamber
Side is simultaneously arranged on the outside of air hole, and the outlet side of inlet end and air the separation return pipeline of mixed gas pump drainage pipeline passes through
Self-closed bleeding point device is connected with air hole；
Mixed gas exhaust pipe road is disposed with electric butterfly valve by inlet end to outlet side, toxic and harmful gas pre-processes back
Receiving apparatus, centrifugal blower, whirlpool compressor, water separation device, preceding buffer tank, the first solenoid valve, air separator, the second electromagnetism
Valve, the first check valve, rear buffer tank, third solenoid valve, expansion joint, the first pressure regulation needle-valve, the first compressor, the second check valve,
4th solenoid valve and sulfur hexafluoride gas storage device；
Air separator is equipped with mixed gas import, sulfur hexafluoride gas outlet, recyclegas outlet and air outlet, empty
Mixed gas import and sulfur hexafluoride gas outlet on gas separating device are connected to mixed gas exhaust pipe road, and air separation is returned
The air outlet of the inlet end on return pipe road and air separator connects, air detach return pipeline by inlet end to outlet side according to
It is secondary to be provided with third check valve, the 5th solenoid valve and air blower；
Sulfur hexafluoride gas storage device includes being sequentially connected in series six holding vessels on mixed gas exhaust pipe road, two neighboring
Mixed gas exhaust pipe road between holding vessel is all provided with there are one the 6th solenoid valve, is equipped on each holding vessel at least one
Spare interface, is all provided with that there are one first pressure gauge and first safety valve, mixed gas pump drainage pipelines at the top of each holding vessel
A holding vessel being connected of outlet side on be connected with the first detection pipe and recovery tube, the first detection pipe is equipped with the second pressure regulation
Needle-valve, the end of the first detection pipe are equipped with the first quick connector, and recovery tube is equipped with third pressure regulation needle-valve, the outlet side of recovery tube
It is connect with the inlet end of mobile sulfur hexafluoride reclaiming clean device；
A double purification branch pipe is respectively connected at the top of six holding vessels, is all provided on every double purification branch pipe there are one the 7th
Solenoid valve, the outlet side of six roots of sensation double purification branch pipe pass through double purification supervisor's series connection, gas recovery double purification pipeline
Inlet end and double purification supervisor connect, buffer tank and the first electricity before the outlet side of gas recovery double purification pipeline is connected to
Mixed gas exhaust pipe between magnet valve on the road, the 8th solenoid valve is provided on gas recovery double purification pipeline；
Further include circulation filtering pipeline, the recyclegas outlet connection on the inlet end and air separator of circulation filtering pipeline,
The outlet side of circulation filtering pipeline is connected to the mixed gas exhaust pipe road between centrifugal blower and whirlpool compressor, is circulated throughout
Chimney filter road is provided with the 4th check valve；
Self-closed bleeding point device includes four adjustable height supporting legs, and four adjustable height supporting leg upper ends are fixedly installed
One rectangular lower frame is vertically equipped with a plurality of uprights on lower frame, there are one all the upper end of the column are fixedly connected with
Width is equal to lower frame and length is less than the upper frame of lower frame, is equipped between adjacent upright posts between upper frame and lower frame
Hound, surrounding correspondence is fixed with two block length risers and two pieces of short risers, the length of long riser on the outside of upper frame and lower frame
Degree is more than the length of air hole, and the length of short riser is more than the top of the width of air hole, two block length risers and two pieces of short risers
Along keeping flushing and being provided with rubber weather strip on a circle, the lower surface on the floor of upper rubber weather strip and pressure change chamber is tightly connected
And around air hole；
Mounting bracket is provided on lower frame on the outside of one piece of short riser, offers and is used on another piece of short riser on lower frame
The inlet end of mixed gas pump drainage pipeline and the mounting hole of the outlet side of air separation return pipeline are connected, is rotated at the top of mounting bracket
Equipped with fixed pulley, mounting bracket outer lower portion is fixed with motor and speed reducer, the power output end of motor and the power of speed reducer
Input terminal connects, and the power output end of speed reducer is coaxial to be provided with reel, and drawstring is wound on reel；It is set in lower frame
Have a cross bar being fixedly connected with short riser lower edge, the longer two sides bottom of lower frame along the distance between two cross bars uniformly
Engaging lug, each pair of engaging lug or so is correspondingly arranged equipped with several, one pair of which engaging lug and a beam contact, each pair of connection
A shaft is rotatably connected between ear, is fixed with rectangular sealing plate, every piece of sealing in every shaft along its length
The width of plate is equal to the distance between two adjacent groups lifting lug, and the longer two sides bottom of lower frame is set between two cross bars
There is the lower rubber weather strip that can coordinate with sealing plate face seal；A company is fixed on the side in the same direction of every piece of sealing plate
Bar, the outer end of drawstring are connect across short riser with all connecting rods successively；
It is set at the top of buffer tank afterwards there are one second pressure gauge and second safety valve, the second detection is connected on rear buffer tank
Pipe, the second detection pipe are equipped with the 4th pressure regulation needle-valve, and the end of the second detection pipe is equipped with the second quick connector.
2. sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage according to claim 1,
It is characterized in that：Mixed gas exhaust pipe road is connected with the second compressor with the first compressor parallel.
3. sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage according to claim 1,
It is characterized in that：Every adjustable height supporting leg includes horizontally disposed support plate, and support plate is arranged on ground by foundation bolt
On, a screw rod is vertically fixed on support plate, casing and the clamp nut below casing are threaded on screw rod, under
Base of frame is fixed with bearing block, and sleeve upper end is connected by the pressure bearing coordinated in bearing block with lower frame rotational support
It connects.
4. sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage according to claim 1,
It is characterized in that：Toxic and harmful gas pretreatment retracting device includes the dust filter unit being arranged in series and decomposition product filter；
Water separation device is made of two separators being arranged in series.
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|---|---|---|---|
| CN201611191565.8A CN106710787B (en) | 2016-12-21 | 2016-12-21 | Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage |
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| CN201611191565.8A CN106710787B (en) | 2016-12-21 | 2016-12-21 | Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage |
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| CN106710787A CN106710787A (en) | 2017-05-24 |
| CN106710787B true CN106710787B (en) | 2018-06-26 |
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| CN108760666A (en) * | 2018-03-01 | 2018-11-06 | 国网湖北省电力公司咸宁供电公司 | A kind of interior SF6Gas leakage monitoring and Recovery Purifying processing system |
| CN114797397B (en) * | 2021-01-22 | 2023-06-06 | 中国石油化工股份有限公司 | Method for treating hydrogen sulfide gas in underground closed space |
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| JP2003002621A (en) * | 2001-06-21 | 2003-01-08 | Mitsubishi Electric Corp | Sulfur hexafluoride gas recovery apparatus |
| CN101066747A (en) * | 2007-05-16 | 2007-11-07 | 张吉 | TV set elevator |
| CN105864633A (en) * | 2016-03-25 | 2016-08-17 | 国网北京市电力公司 | SF6 gas collection system |
| CN105858619B (en) * | 2016-05-20 | 2018-06-08 | 国家电网公司 | Mobile sulfur hexafluoride and carbon tetrafluoride mixed gas Rapid recovery device |
| CN206282679U (en) * | 2016-12-21 | 2017-06-27 | 河南省日立信股份有限公司 | Sulfur hexafluoride gas Emergency recovery cleaning system after underground substation transformer leakage |
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