CN206276209U - Sulfur hexafluoride electrical equipment band electric-type dehumidifies cleaning system online - Google Patents
Sulfur hexafluoride electrical equipment band electric-type dehumidifies cleaning system online Download PDFInfo
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- CN206276209U CN206276209U CN201621265886.3U CN201621265886U CN206276209U CN 206276209 U CN206276209 U CN 206276209U CN 201621265886 U CN201621265886 U CN 201621265886U CN 206276209 U CN206276209 U CN 206276209U
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 58
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 title claims abstract description 16
- 238000005202 decontamination Methods 0.000 claims abstract description 38
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 37
- 238000003860 storage Methods 0.000 claims abstract description 36
- 239000002808 molecular sieve Substances 0.000 claims description 32
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 31
- 230000007306 turnover Effects 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 27
- 230000008569 process Effects 0.000 abstract description 27
- 238000000746 purification Methods 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 3
- 238000007667 floating Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 101
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 241000009298 Trigla lyra Species 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005055 memory storage Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000011403 purification operation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
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Abstract
Sulfur hexafluoride electrical equipment band electric-type dehumidifies cleaning system, including air-breathing dry decontamination pipeline, compressibility and outlet dry decontamination pipeline online；Compressibility includes being arranged in parallel two compressed gas pipelines, and two inlet ends of compressed gas pipeline are connected with the gas outlet of the storage tank on air-breathing dry decontamination pipeline, and two outlet sides of compressed gas pipeline are connected with the inlet end of outlet dry decontamination pipeline.The utility model can be to operating high voltage electric equipment SF6Moisture, catabolite and floating dust in gas are absorbed, and completed the dehumidifying of sulfur hexafluoride gas, are purified and recharge.The utility model has dual adsorption cleaning function, it is ensured that the process exhaled and the process inhaled, SF6Gas can be good at dry filter.Do not influence breaker, the normal operation of high-voltage switch equal-height voltage electrical equipment in purification process, realize online continuous work.
Description
Technical field
The utility model belongs to electrical equipment safe insulation technical field, and in particular to a kind of sulfur hexafluoride electrical equipment band
Electric-type dehumidifies cleaning system online.
Background technology
In power system, SF6Gas is widely used in various height with its excellent insulating properties and arc extinction performance
In voltage electrical equipment.In high pressure（126~252KV）, super-pressure（363~800KV）, extra-high voltage（1100 KV）Field, with SF6
Gas accounts for absolute leading position for the high-tension switch gear of dielectric.The safety and economic operation of these high-tension switch gears is to whole
The reliable and stable operation of individual intelligent grid power transformation link is significant.
According to the requirement of related code, it is necessary to carry out strict quality surveillance and safety to the gas in above-mentioned high-tension apparatus
Management.Because, SF6Gas can decompose generation some poisonous in its production process or in the presence of the high energy factor
Even severe toxicity, severe corrosive objectionable impurities, when there is moisture, air in system（Oxygen）, electrode material, equipment and materials etc., then can
Cause the complication of decomposable process, causing the value volume and range of product of catabolite substantially increases, and its harmfulness is also significantly increased.
SF6A series of chemical equations that gas occurs under high temperature, arcing are as follows,
The harm of sulfur hexafluoride gas impurity is mainly manifested in the toxicity and corrosivity of its catabolite, sulfur hexafluoride gas
The presence of body catabolite middle acid substance can cause the corrosion of high-tension switch gear material；The presence of moisture, in certain condition
Under electric property may be caused to deteriorate（The various electric arc analytes and SF of sulfur hexafluoride gas6Gas by hydrolysis produce HF and
H2SO4, corrosiveness can be produced to some metal objects and insulating part, and then influence the service life of high-voltage switch gear）, or even cause
Serious equipment breakdown；The subfluoride for coming is decomposited to be pernicious to people, or even threat to life.
Therefore, the concerned countries standard and power industry relevant criterion or specification of China, such as《Sulfur hexafluoride electrical equipment is transported
Row experiment and maintainer's security protection detailed rules and regulations》（DLT639-1997）、《Gas delivery and inspection in sulfur hexafluoride electrical equipment
Directive/guide》（GB/T8905-2008）、《Power equipment preventive trial code》（DL/T596-2005）, propose sulfur hexafluoride
Gaseous mass supervision and management requirement.
Quality surveillance to sulfur hexafluoride gas in operation, DL/T596-2005《Power equipment preventive trial code》Rule
Fixed, " humidity is the key index for influenceing equipment safety operation in sulfur hexafluoride gas, if finding, humidity exceeds standard, should use
Gas concentration unit is dried, purified treatment.”
《The supervision of gas and management during equipment disassembling overhaul》Middle regulation：" there is internal sudden strain of a muscle in gas insulated electric apparatus
Network or other it is abnormal when should carry out breakdown maintenance." " used sulfur hexafluoride gas will all be returned by gas concentration unit
Receive ... ", " sulfur hexafluoride gas of recovery, when not meeting new gas quality standard through analysis, it is necessary to purified treatment ... ... "
At this stage, the sulfur hexafluoride reclaiming clean equipment on China's electricity market is both for sulfur hexafluoride electrical equipment
Repair and maintenance and the reclaiming clean equipment researched and developed, some products taken into account the installation of SF 6 high-voltage electrical equipment, maintenance, should
It is anxious, it is more applicable for SF during SF 6 high-voltage equipment Disintegration overhaul6The links such as the recovery of gas.
The power failure of common demands SF 6 high-voltage switchgear is detected or purified treatment the said goods in the application, but high pressure
, there is power failure formality complexity, cannot have a power failure at any time in the interruption maintenance not a duck soup of switchgear, influence is comprehended at power failure detection or place
A series of problems, such as electric network reliability, therefore, study electrical equipment（Especially GIL pipelines of countryside or underground）In SF6 gas
The powered dehumidifying purification techniques of body is necessary, and in inside electric appliance humidity over limit and cannot especially stop transport
In the case of.
Utility model content
The utility model is in order to solve weak point of the prior art, there is provided a kind of sulfur hexafluoride electrical equipment band electric-type
Online dehumidifying cleaning system, the system passes through to exhale, inhales SF in principle displacement electric insulation equipment6Moisture and decomposition in gas are produced
Thing and floating dust, can be in the SF in the high voltage electric equipment in the case of not having a power failure to humidity over limit6Gas is dried purification
And recharge, and dry decontamination process does not influence the normal operation of the equipment such as high-voltage electrical apparatus.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：Sulfur hexafluoride electrical equipment band electric-type
Online dehumidifying cleaning system, including air-breathing dry decontamination pipeline, compressibility and outlet dry decontamination pipeline, air-breathing dry decontamination
Be disposed with from inlet end to outlet side on pipeline the first self-styled turnover pipe joint, first pressure table, first pressure sensor,
Mass flow controller, the first magnetic valve, first gas cooler, the first molecular sieve, the second molecular sieve and storage tank, storage tank
It is provided with second pressure sensor；
Compressibility includes being arranged in parallel two compressed gas pipelines, two inlet ends and storage tank of compressed gas pipeline
Gas outlet connection, two outlet sides of compressed gas pipeline are connected with the inlet end of outlet dry decontamination pipeline, and one is compressed
The second magnetic valve, vacuum compressor and the 3rd magnetic valve are disposed with by inlet end to outlet side on gas piping, another
The 4th magnetic valve, compressor and check valve are disposed with by inlet end to outlet side on compressed gas pipeline；
Second gas cooler, the 3rd molecule are disposed with by inlet end to outlet side on outlet dry decontamination pipeline
Sieve, the 4th molecular sieve, the 5th magnetic valve, the 3rd pressure sensor, second pressure table and the second self-styled turnover pipe joint.
Gas piping is connected between air-breathing dry decontamination pipeline and outlet dry decontamination pipeline, is provided with gas piping
6th magnetic valve, the air-breathing that one end of gas piping is connected between first pressure sensor and mass flow controller is dried only
Change on pipeline, the other end of gas piping is connected to the outlet dry decontamination pipe between the 5th magnetic valve and the 3rd pressure sensor
Lu Shang.
Also include vacuum-pumping pipeline, the inlet end of vacuum-pumping pipeline is connected to the 6th magnetic valve and air-breathing dry decontamination pipeline
Between gas piping on, in vacuum-pumping pipeline by inlet end to outlet side be disposed with the 7th magnetic valve, vacuum transducer,
Manual ball valve and vavuum pump.
First gas cooler and second gas cooler are respectively the two of Air cooler air-cooled pipelines.
Using above-mentioned technical proposal, the first self-styled turnover pipe joint and the second self-styled turnover pipe joint are pressed off for connecting height
Pass equipment or steel cylinder（Store high-purity SF6Gas）, gas of the first pressure sensor for the first self-styled inlet/outlet pipe joint of monitoring
Body pressure, the 3rd pressure sensor is used to monitor the gas pressure of the second self-styled inlet/outlet pipe joint, and mass flow controller is used
Carry out the flow velocity of gas in control piper.Second pressure sensor is used to monitor the pressure in storage tank.
The utility model is vacuum, compressor and the vacuum compressor of system itself when work is used, first
Internal washing（Use high-purity SF6Gas）.
The vacuum of system itself：Manual ball valve, the 7th magnetic valve, the first magnetic valve and the 6th magnetic valve are opened,
Start vavuum pump, the first molecular sieve, the second molecular sieve and storage tank and air-breathing dry decontamination pipeline are vacuumized, work as vacuum
The pressure value that sensor shows is less than 10pa and can keep this pressure value, and expression system itself is completed and vacuumized
Journey.The 6th magnetic valve, the first magnetic valve are closed, the pipeline between turnover pipe joint self-styled to first and the steel cylinder being attached thereto enters
Row is vacuumized；After completing the vacuumizing of connecting pipe, the 7th magnetic valve and manual ball valve are closed.
The internal washing of compressor and vacuum compressor：SF will be stored first6The steel cylinder of gas and the first self-styled inlet/outlet pipe
Joint is connected, and the second self-styled turnover pipe joint is connected with an empty steel cylinder, opens storage SF6The valve of the steel cylinder of gas and first
Magnetic valve, high-purity SF6Gas flow through successively mass flow controller, the first magnetic valve, Air cooler, the first molecular sieve, second point
Enter storage tank after pipeline where son sieve；Cut-off starts compressor and opens the 4th magnetic valve, the high-purity SF in storage tank6Gas
Body passes sequentially through the 4th magnetic valve, compressor, check valve, Air cooler, type three-molecular screen alternating, the 4th molecular sieve, the 5th magnetic valve institute
Pipeline, clean overcompression machine SF6Gas is injected into sky steel cylinder memory storage.Storage SF is closed after cleaning a period of time6Gas
Cylinder valve and the first magnetic valve, after pressure inside storage tank is less than 0.1Mpa, close compressor and the 4th magnetic valve,
The second magnetic valve, the 3rd magnetic valve and vacuum compressor are opened, vacuum compressor inside is cleaned, vacuum compressor handle is deposited
Pressure inside storage tank is extracted into 1000Pa, closes vacuum compressor and the second magnetic valve, the 3rd magnetic valve and simultaneously closes off second
The cylinder valve of self-styled inlet/outlet pipe joint.Then again to SF6High voltage electric equipment is vacuumized itself, according to actual needs
Whether the storage tank to being pumped through vacuum is filled with high-purity SF of certain pressure6Gas.
After above preparation is finished, so that it may to the SF in high voltage electric equipment6Gas is carried out except wet purification operation.Specifically
Including breathing process and exhalation process.
Breathing process（By a part of SF in high voltage electric equipment to be replaced6Gas is drawn onto the system and is stored in and deposits
Process in storage tank）：By the first self-styled turnover pipe joint and high voltage electric equipment to be replaced（The totally-enclosed combination of breaker, GIS
Electrical equipment etc.）Connected with the pipeline of configuration；First the pipeline for connecting is vacuumized, after completing the vacuumizing of pipeline, SF is opened6It is high
Ball valve in voltage electrical equipment, opens the first magnetic valve（Close the 6th magnetic valve, the 7th magnetic valve, the 4th magnetic valve, the second electricity
Magnet valve, the 3rd magnetic valve）, the pressure due to storage tank the inside pressure less than device interior to be replaced, the SF of displacement6Gas is successively
Storage tank, the first pressure are entered by mass flow controller, the first magnetic valve, Air cooler, the first molecular sieve and the second molecular sieve
The force snesor device moment measures the pressure of air inlet, when pressure value drops to SF6The lower limit of high voltage electric equipment operating pressure
The first magnetic valve is closed before, and breathing process is completed.In order to allow the first molecular sieve and the second molecular sieve can more preferably more fully
Absorption SF6Moisture and catabolite in gas, time delay certain hour restart exhalation process.Mass flow controller is used for controlling
Flow in tubulation road.
Exhalation process（It is exactly briefly by the SF6 gases through dry decontamination in storage tank in the presence of compressor
Recharge the process in SF6 high-tension apparatuses）：Open the 6th magnetic valve, the 4th magnetic valve（Close the first magnetic valve, the 7th electromagnetism
Valve, the second magnetic valve, the 3rd magnetic valve）, start compressor, the SF in storage tank, the first molecular sieve and the second molecular sieve6Gas
Body, Air cooler is flowed through in the presence of compressor carries out redrying into the type three-molecular screen alternating and the 4th molecular sieve at gas outlet
Then absorption, the pipeline where pipeline, the 6th magnetic valve where passing through the 5th magnetic valve is connect by the first self-styled inlet/outlet pipe
Head is recharged into SF to be replaced6Electric insulation equipment.If SF to be replaced6Electrical equipment has two external tappings, it is possible to by
Two self-styled turnover pipe joints are SF6Gas refill enters high voltage electric equipment, thus can faster complete replacement process.
Said process is that a suction one is exhaled, and completes SF to be replaced6In high voltage electric equipment the drying of a part of SF6 gases and
Purification；Said process circulating repetition, until SF to be replaced6SF in high voltage electric equipment6Gas index meets indices requirement
Untill.
In sum, the utility model has the advantages that：
1st, the utility model can be to operating high voltage electric equipment SF6Moisture, catabolite and floating dust in gas enter
Row absorbs, and completes the dehumidifying of sulfur hexafluoride gas, purifies and recharge.
2nd, the utility model has dual adsorption cleaning function, it is ensured that the process exhaled and the process inhaled, SF6Gas can be very
Good dry filter.Do not influence breaker, the normal operation of high-voltage switch equal-height voltage electrical equipment in purification process, realize
Wire type continuously works.
3rd, the utility model realizes the dehumidifying purification function of gas in SF 6 high-voltage equipment in operation, high to prevention
Voltage electrical equipment breakdown, the Years Of Service for extending high-tension apparatus is significant.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Cleaning system, including air-breathing as shown in figure 1, sulfur hexafluoride electrical equipment band electric-type of the present utility model dehumidifies online
Dry decontamination pipeline 1, compressibility and outlet dry decontamination pipeline 2, on air-breathing dry decontamination pipeline 1 from inlet end to outlet side
It is disposed with the first self-styled turnover pipe joint 3, first pressure table 4, first pressure sensor 5, mass flow controller 6, the
One magnetic valve 7, first gas cooler, the first molecular sieve 9, the second molecular sieve 10 and storage tank 11, storage tank 11 are provided with
Two pressure sensors 12.
Compressibility includes being arranged in parallel two compressed gas pipelines 13, two inlet ends of compressed gas pipeline 13 with deposit
The gas outlet connection of storage tank 11, two outlet sides of compressed gas pipeline 13 are connected with the inlet end of outlet dry decontamination pipeline 2,
Second magnetic valve 14, vacuum compressor 15 and the 3rd are disposed with by inlet end to outlet side on one compressed gas pipeline 13
Magnetic valve 16, the 4th magnetic valve 17, compressor is disposed with another compressed gas pipeline 13 by inlet end to outlet side
18 and check valve 19.
Second gas cooler, the 3rd molecule are disposed with by inlet end to outlet side on outlet dry decontamination pipeline 2
The 21, the 4th molecular sieve 22 of sieve, the 5th magnetic valve 23, the 3rd pressure sensor 24, the self-styled inlet/outlet pipe of second pressure table 25 and second
Joint 26.
Gas piping 27 is connected between air-breathing dry decontamination pipeline 1 and outlet dry decontamination pipeline 2, on gas piping 27
The 6th magnetic valve 28 is provided with, one end of gas piping 27 is connected between first pressure sensor 5 and mass flow controller 6
Air-breathing dry decontamination pipeline 1 on, the other end of gas piping 27 is connected to the 5th magnetic valve 23 and the 3rd pressure sensor 24
Between outlet dry decontamination pipeline 2 on.
The utility model also includes vacuum-pumping pipeline 29, the inlet end of vacuum-pumping pipeline 29 be connected to the 6th magnetic valve 28 with
On gas piping 27 between air-breathing dry decontamination pipeline 1, it is disposed with to outlet side by inlet end in vacuum-pumping pipeline 29
7th magnetic valve 30, vacuum transducer 31, manual ball valve 32 and vavuum pump 33.
First gas cooler and second gas cooler are respectively the two of Air cooler 8 air-cooled pipelines.
The first self-styled self-styled turnover pipe joint 26 of turnover pipe joint 3 and second is used to connect high-tension switch gear or steel cylinder
（Store high-purity SF6Gas）, the gas pressure that first pressure sensor 5 is used at the self-styled turnover pipe joint 3 of monitoring first, the 3rd
Pressure sensor 24 is used to monitor the gas pressure at the second self-styled turnover pipe joint 26, and mass flow controller 6 is used for controlling
The flow velocity of gas in pipeline.Second pressure sensor 12 is used to monitor the pressure in storage tank 11.
The utility model is vacuum, compressor 18 and the vacuum compression of system itself when work is used, first
The internal washing of machine 15（Use high-purity SF6Gas）.
The vacuum of system itself：Open manual ball valve 32, the 7th magnetic valve 30, the first magnetic valve 7 and the 6th electricity
Magnet valve 28, starts vavuum pump 33, and the first molecular sieve 9, the second molecular sieve 10 and storage tank 11 and air-breathing dry decontamination pipeline 1 are entered
Row is vacuumized, and when the pressure value of the display of vacuum transducer 31 is less than 10pa and can keep this pressure value, represents system certainly
Body completes vacuum.Close the 6th magnetic valve 28, the first magnetic valve 7, therewith turnover pipe joint 3 self-styled to first and phase
Pipeline between steel cylinder even is vacuumized；After completing the vacuumizing of connecting pipe, the 7th magnetic valve 30 and manual ball are closed
Valve 32.
The internal washing of compressor 18 and vacuum compressor 15：SF will be stored first6The steel cylinder of gas it is self-styled with first enter
Go out pipe joint 3 to connect, the second self-styled turnover pipe joint 26 is connected with an empty steel cylinder, opens storage SF6The valve of the steel cylinder of gas
Door and the first magnetic valve 7, high-purity SF6Gas flows through mass flow controller 6, the first magnetic valve 7,8, first point of Air cooler successively
Enter storage tank 11 after pipeline where the 9, second molecular sieve of son sieve 10；Cut-off starts compressor 18 and opens the 4th magnetic valve
17, the high-purity SF in storage tank 116Gas passes sequentially through the 4th magnetic valve 17, compressor 18, check valve 19, Air cooler the 8, the 3rd
Pipeline where molecular sieve 21, the 4th molecular sieve 22, the 5th magnetic valve, the SF of cleaning overcompression machine 186Gas is injected into sky steel
Bottle memory storage.Storage SF is closed after cleaning a period of time6The cylinder valve of gas and the first magnetic valve 7, when the inside of storage tank 11
Pressure less than after 0.1Mpa, the magnetic valve 17 of close compressor 18 and the 4th, open the second magnetic valve 14, the 3rd magnetic valve 16 and
Vacuum compressor 15, to being cleaned inside vacuum compressor 15, vacuum compressor 15 is extracted into the pressure of the inside of storage tank 11
1000Pa, closes vacuum compressor 15 and second magnetic valve 14, the 3rd magnetic valve 16 and simultaneously closes off the second self-styled inlet/outlet pipe and connect
Cylinder valve at first 26.Then again to SF6High voltage electric equipment is vacuumized itself, according to actual needs to being pumped through vacuum
Storage tank 11 whether be filled with high-purity SF of certain pressure6Gas.
After above preparation is finished, so that it may to the SF in high voltage electric equipment6Gas is carried out except wet purification operation.Specifically
Including breathing process and exhalation process.
Breathing process（By a part of SF in high voltage electric equipment to be replaced6Gas is drawn onto the system and is stored in and deposits
Process in storage tank 11）：By the first self-styled turnover pipe joint 3 and high voltage electric equipment to be replaced（Breaker, GIS are totally-enclosed
Combined electrical apparatus etc.）Connected with the pipeline of configuration；First the pipeline for connecting is vacuumized, after completing the vacuumizing of pipeline, is opened
SF6Ball valve on high voltage electric equipment, opens the first magnetic valve 7（Close the 6th magnetic valve 28, the electricity of the 7th magnetic valve the 30, the 4th
Magnet valve 17, the second magnetic valve 14, the 3rd magnetic valve 16）, the pressure due to the inside pressure of storage tank 11 less than device interior to be replaced
Power, the SF of displacement6Gas passes sequentially through mass flow controller 6, the first magnetic valve 7, Air cooler 8, the first molecular sieve 9 and second
Molecular sieve 10 enters storage tank 11, and the device moment of first pressure sensor 5 measures the pressure of air inlet, when pressure value drops to SF6
The first magnetic valve 7 is closed before the lower limit of high voltage electric equipment operating pressure, breathing process is completed.In order to allow the first molecular sieve
9 and second molecular sieve 10 more preferably can more fully adsorb SF6Moisture and catabolite in gas, time delay certain hour are opened again
Dynamic exhalation process.Mass flow controller 6 is used for the flow in control piper.
Exhalation process（It is exactly briefly by the SF6 through dry decontamination in storage tank 11 in the presence of compressor 18
Gas refill enters the process in SF6 high-tension apparatuses）：Open the 6th magnetic valve 28, the 4th magnetic valve 17（Close the first magnetic valve 7,
7th magnetic valve 30, the second magnetic valve 14, the 3rd magnetic valve 16）, start compressor 18, storage tank 11, the first molecular sieve 9 and the
SF in two molecular sieves 106Gas, flows through the type three-molecular screen alternating 21 that Air cooler 8 enters at gas outlet in the presence of compressor 18
Redrying absorption is carried out with the 4th molecular sieve 22, where the pipeline, the 6th magnetic valve 28 where passing through the 5th magnetic valve
Then pipeline is recharged into SF to be replaced by the first self-styled turnover pipe joint 36Electric insulation equipment.If SF to be replaced6Electrically
Equipment has two external tappings, it is possible to by the second self-styled turnover pipe joint 26 SF6Gas refill enters high voltage electric equipment, this
Sample just can faster complete replacement process.
Said process is that a suction one is exhaled, and completes SF to be replaced6In high voltage electric equipment the drying of a part of SF6 gases and
Purification；Said process circulating repetition, until SF to be replaced6SF in high voltage electric equipment6Gas index meets indices requirement
Untill.
Above example is only used to illustrative and not limiting the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model has been described in detail, it will be understood by those within the art that：The utility model can still be entered
Row modification or equivalent, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should
Cover in the middle of right of the present utility model.
Claims (4)
1. sulfur hexafluoride electrical equipment band electric-type dehumidifies cleaning system online, it is characterised in that：Including air-breathing dry decontamination pipeline,
Compressibility and outlet dry decontamination pipeline, are disposed with first certainly from inlet end to outlet side on air-breathing dry decontamination pipeline
Envelope turnover pipe joint, first pressure table, first pressure sensor, mass flow controller, the first magnetic valve, first gas cooling
Device, the first molecular sieve, the second molecular sieve and storage tank, storage tank are provided with second pressure sensor；
Compressibility includes being arranged in parallel two compressed gas pipelines, and two inlet ends of compressed gas pipeline go out with storage tank
Gas port is connected, and two outlet sides of compressed gas pipeline are connected with the inlet end of outlet dry decontamination pipeline, a compressed gas
The second magnetic valve, vacuum compressor and the 3rd magnetic valve are disposed with by inlet end to outlet side on pipeline, another compression
The 4th magnetic valve, compressor and check valve are disposed with by inlet end to outlet side on gas piping；
Second gas cooler, type three-molecular screen alternating, are disposed with by inlet end to outlet side on outlet dry decontamination pipeline
Four molecular sieves, the 5th magnetic valve, the 3rd pressure sensor, second pressure table and the second self-styled turnover pipe joint.
2. sulfur hexafluoride electrical equipment according to claim 1 band electric-type dehumidifies cleaning system online, it is characterised in that：Inhale
Gas piping is connected between gas dry decontamination pipeline and outlet dry decontamination pipeline, the 6th electromagnetism is provided with gas piping
Valve, one end of gas piping is connected to the air-breathing dry decontamination pipeline between first pressure sensor and mass flow controller
On, the other end of gas piping is connected on the outlet dry decontamination pipeline between the 5th magnetic valve and the 3rd pressure sensor.
3. sulfur hexafluoride electrical equipment according to claim 2 band electric-type dehumidifies cleaning system online, it is characterised in that：Also
Including vacuum-pumping pipeline, the inlet end of vacuum-pumping pipeline is connected to the gas between the 6th magnetic valve and air-breathing dry decontamination pipeline
On pipeline, in vacuum-pumping pipeline by inlet end to outlet side be disposed with the 7th magnetic valve, vacuum transducer, manual ball valve and
Vavuum pump.
4. sulfur hexafluoride electrical equipment according to claim 1 band electric-type dehumidifies cleaning system online, it is characterised in that：The
One gas cooler and second gas cooler are respectively the two of Air cooler air-cooled pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265886.3U CN206276209U (en) | 2016-11-24 | 2016-11-24 | Sulfur hexafluoride electrical equipment band electric-type dehumidifies cleaning system online |
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| CN106512671A (en) * | 2016-11-24 | 2017-03-22 | 黑龙江省电力科学研究院 | Electrified on-line dehumidifying and purifying system of sulfur hexafluoride electric equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106512671A (en) * | 2016-11-24 | 2017-03-22 | 黑龙江省电力科学研究院 | Electrified on-line dehumidifying and purifying system of sulfur hexafluoride electric equipment |
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