CN107943120A - A kind of on-line automatic density regulating apparatus of SF6 - Google Patents
A kind of on-line automatic density regulating apparatus of SF6 Download PDFInfo
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- CN107943120A CN107943120A CN201711428236.5A CN201711428236A CN107943120A CN 107943120 A CN107943120 A CN 107943120A CN 201711428236 A CN201711428236 A CN 201711428236A CN 107943120 A CN107943120 A CN 107943120A
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- density
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- gases
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/139—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring a value related to the quantity of the individual components and sensing at least one property of the mixture
Abstract
A kind of on-line automatic density regulating apparatus of SF6, include SF6 electrical equipments 1, density monitor 15, solenoid valve 16, connector 17, pressure sensor 18, temperature sensor 19 including SF6 electrical module A, SF6 electrical modules A, further include Auto-regulating System of Density of Heavy Medium module B, communication control module C；By the Auto-regulating System of Density of Heavy Medium module B of the SF6 automatic density regulating devices of the present invention, density can be solved not enough and density is excessive because of issuable leakage problem in tonifying Qi and deflation course, realize the automatic business processing of a small amount of tonifying Qi and deflation.
Description
Technical field
The present invention relates to a kind of on-line automatic density regulating apparatus of SF6, belong to SF6 electrical equipments.
Background technology
At present, during SF6 electric equipment operations, since the reasons such as seal aging, the verification of SF6 density monitors cause
SF6 inside electric appliance SF6 gases leak, and decline SF6 gas pressures, density reduction, cause the insulating properties of SF6 gases to drop
Low energy, the safe operation to SF6 electrical equipments cause a hidden trouble, or since exterior temperature change causes inside SF6 electrical equipments
Air pressure change, the situation for causing SF6 density monitors surprisingly to be alarmed, the method routinely solved at present generally for case above are
For gas density it is insufficient when by the way of gas is added, for density it is excessive take be deflation or recycling mode,
It is relatively conventional by the way of a little gas is put at present usually since gas recovery is more troublesome, but SF6 is long-term
Various poisonous decomposition products can be produced during use, and product SO2 can also produce greenhouse effects, environment can be produced quite big
Destruction.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of SF6 automatic densities regulating device, can solve close
Degree is not enough and density is excessive because issuable leakage problem in tonifying Qi and deflation course, realizes a small amount of tonifying Qi and deflation oneself
Dynamicization processing.
The technical solution adopted by the present invention is：
A kind of on-line automatic density regulating apparatus of SF6, including SF6 electrical module A, SF6 electrical modules A are electric including SF6
Equipment 1, density monitor 15, solenoid valve 16, connector 17, pressure sensor 18, temperature sensor 19, it is characterised in that：Also wrap
Include Auto-regulating System of Density of Heavy Medium module B, communication control module C；Auto-regulating System of Density of Heavy Medium module B includes SF6 air supply tanks 6, SF6 gases recycling can 12, mends
Gas tank pressure sensor 7, air supply tank aerating mouth 8, proportioning valve 2, air inlet electromagnetic valve 3, electrical equipment breather check valve 4, air supply tank
Breather check valve 9, pressure-releasing electromagnetic valve 14, vacuum pump 10, vacuum transducer 11, pipeline, air supply tank aerating mouth 8 are arranged on SF6 benefits
On gas tank 6, air supply tank pressure sensor 7 is additionally provided with SF6 air supply tanks 6, vacuum sensing is provided with SF6 gases recycling can 12
Device 11, is equipped with vacuum pump 10, air supply tank breather check valve 9, electrically successively between SF6 gases recycling can 12 and SF6 air supply tanks 6
Equipment breather check valve 4, air inlet electromagnetic valve 3, proportioning valve 2 are successively set between SF6 air supply tanks 6 and SF6 electrical equipments 1, are put
14 one end of pneumoelectric magnet valve connection SF6 gases recycling can 12, other end connection proportioning valve 2；Communication control module includes control system
20th, GPRS module 21.
Further, Auto-regulating System of Density of Heavy Medium module B further includes expander 5.
Further, Auto-regulating System of Density of Heavy Medium module B further includes protection valve 13, and connection proportioning valve 2 and SF6 in 13 one end of protection valve is electric
Between equipment 1, other end connection SF6 gases recycling can 12, density monitor 15 is provided with overpressure alarm value, protects the pressure of valve 13
Power setting value is more than the overpressure alarm value that density monitor 15 is set.
Further, it is electric safe valve to protect valve 13, and protection valve 13 is electric contact signal output, accesses pressure-releasing electromagnetic valve
14 and the current supply circuit of proportioning valve 2.
Further, proportioning valve 2, air inlet electromagnetic valve 3, pressure-releasing electromagnetic valve 14, solenoid valve 16, pipeline, SF6 air supply tanks 6,
SF6 gases recycling can 12,10 integral sealing of vacuum pump, SF6 gas detection sensors are installed in sealing shell, detect whether to deposit
Leaked in SF6 gases, such as there is leakage, alarmed by GPRS.
Further, control system 20 is provided with density monitor verifying function, when closing solenoid valve 3, control system
20 can realize the verification to density monitor by the density monitor verifying function set up.
A kind of control method of the on-line automatic density regulating apparatus of SF6, including：
Step 1：Air supply tank pressure sensor 7 detects tonifying Qi pressure tank, and the air supply tank pressure with being set in control system 20
Force threshold is compared, if tonifying Qi pressure tank is less than density threshold, by setting GPRS module 21 to notify that maintenance department is timely
Supply SF6 gases；
Step 2：The pressure that the SF6 gases of SF6 electrical equipments are detected by pressure sensor 18, temperature sensor 19 is believed
Number and temperature signal send control system 20 to, corresponding density is converted into by control system 20, and with being set in control system 20
Fixed density threshold is compared；When the gas density of SF6 electrical equipments is less than density threshold, step 3 is carried out；When more than
Step 4 is carried out during density threshold；
Step 3：Density monitor 15 controls proportioning valve 2, air inlet electromagnetic valve 3, and the gas of SF6 air supply tanks 6 is by electrically setting
Standby breather check valve 4, air inlet electromagnetic valve 3, proportioning valve 2 enter SF6 electrical equipments 1, and tonifying Qi, control are carried out to SF6 electrical equipments 1
System 20 adjusts 2 aperture of proportioning valve according to the detection signal of pressure sensor 18 and temperature sensor 19 and realizes tonifying Qi in time, close
Degree reaches desired value, closes proportioning valve 2, air inlet electromagnetic valve 3, stops tonifying Qi；
Step 4：Density monitor 15 controls proportioning valve 2, pressure-releasing electromagnetic valve 14, unnecessary gas in SF6 electrical equipments 1
SF6 gases recycling can 12 is entered by proportioning valve 2, pressure-releasing electromagnetic valve 14, control system 20 is according to pressure sensor 18 and temperature
The detection signal of sensor 19 adjusts 2 aperture of proportioning valve and realizes deflation in time, and density reaches desired value, closes proportioning valve 2, deflates
Solenoid valve 14, stops deflating, while vacuum transducer 11 detects the pressure of SF6 gases recycling can 12, when SF6 gases recycling can 12
Pressure close pressure-releasing electromagnetic valve when exceeding the recycling can pressure threshold set in control system 20, stop deflating；
Step 5：Vacuum pump 10 is opened, the gas of SF6 gases recycling can 12 is recycled to SF6 air supply tanks 6.
Brief description of the drawings
Fig. 1 is the principle of the present invention figure.
In figure：1.SF6 electrical equipments, 2. proportioning valves, 3. air inlet electromagnetic valves, 4. electrical equipment breather check valves, 5. expansions
Device, 6.SF6 air supply tanks, 7. air supply tank pressure sensors, 8. air supply tank aerating mouths, 9. air supply tank breather check valves, 10. vacuum
Pump, 11. vacuum transducers, 12.SF6 gases recycling can, 13. protection valves, 14. pressure-releasing electromagnetic valves, 15. density monitors, 16. electricity
Magnet valve, 17. connectors, 18. pressure sensors, 19. temperature sensors, 20. control systems, 21.GPRS modules.
Embodiment
As shown in Figure 1, a kind of on-line automatic density regulating apparatus of SF6, including SF6 electrical modules A, Auto-regulating System of Density of Heavy Medium module B,
Communication control module C, wherein SF6 electrical modules A include SF6 electrical equipments 1, density monitor 15, solenoid valve 16, connector 17,
Pressure sensor 18, temperature sensor 19, SF6 electrical equipments 1 are filled by connector 17, solenoid valve 16 to SF6 electrical equipments 1
SF6 gases, close solenoid valve 16 after filling.
Auto-regulating System of Density of Heavy Medium module B includes SF6 air supply tanks 6, SF6 gases recycling can 12, air supply tank pressure sensor 7, air supply tank
Aerating mouth 8, proportioning valve 2, air inlet electromagnetic valve 3, electrical equipment breather check valve 4, air supply tank breather check valve 9, pressure-releasing electromagnetic valve
14th, vacuum pump 10, vacuum transducer 11, pipeline, air supply tank aerating mouth 8 are arranged on SF6 air supply tanks 6, on SF6 air supply tanks 6 also
It is provided with air supply tank pressure sensor 7 to be used to detect tonifying Qi pressure tank, vacuum transducer is provided with SF6 gases recycling can 12
11, vacuum pump 10, air supply tank breather check valve 9 are equipped with successively between SF6 gases recycling can 12 and SF6 air supply tanks 6, by true
The gas of SF6 gases recycling can 12 is pumped into SF6 air supply tanks and realizes SF6 gas circulations profit by sky pump 10, air supply tank breather check valve 9
With electrical equipment breather check valve 4, air inlet electromagnetic valve 3, proportioning valve 2 are successively set on SF6 air supply tanks 6 and SF6 electrical equipments 1
Between to realize that the gas of SF6 air supply tanks fills into SF6 electrical equipments 1,14 one end of pressure-releasing electromagnetic valve connection SF6 gas recycling cans
12, gas unnecessary in SF6 electrical equipments 1 is recycled to SF6 gases recycling can 12 by other end connection proportioning valve 2, and pipeline is used for
Connect each component.
Communication control module includes control system 2020, GPRS module 2121, and control system 2020 receives each sensor
Signal controls proportioning valve, the keying of solenoid valve, and GPRS module 2121 mainly realizes the communication between control system 2020.
Further, Auto-regulating System of Density of Heavy Medium module B further includes expander 5.
Further, Auto-regulating System of Density of Heavy Medium module B further includes protection valve 13, and connection proportioning valve 2 and SF6 in 13 one end of protection valve is electric
Between equipment 1, other end connection SF6 gases recycling can 12, when pressure exceedes a certain range in SF6 electrical equipments 1, SF6 electricity
For gas in gas equipment 1 by protecting valve 13 to enter SF6 gases recycling can 12, density monitor 15 is provided with overpressure alarm value,
The pressure set points of valve 13 are protected to be more than the overpressure alarm value that density monitor 15 is set.
Further, it is electric safe valve to protect valve 13, and protection valve 13 is electric contact signal output, accesses pressure-releasing electromagnetic valve
14 and the current supply circuit of proportioning valve 2.
Further, proportioning valve 2, air inlet electromagnetic valve 3, pressure-releasing electromagnetic valve 14, solenoid valve 16, pipeline, SF6 air supply tanks 6,
SF6 gases recycling can 12,10 integral sealing of vacuum pump, SF6 gas detection sensors are installed in sealing shell, detect whether to deposit
Leaked in SF6 gases, such as there is leakage, alarmed by GPRS
Further, control system 20 is provided with density monitor verifying function, when closing solenoid valve 3, control system
20 can realize the verification to density monitor by the density monitor verifying function set up.
A kind of control method of the on-line automatic density regulating apparatus of SF6, including：
Step 1：Air supply tank pressure sensor 7 detects tonifying Qi pressure tank, and the air supply tank pressure with being set in control system 20
Force threshold is compared, if tonifying Qi pressure tank is less than density threshold, by setting GPRS module 21 to notify that maintenance department is timely
Supply SF6 gases；
Step 2：The pressure that the SF6 gases of SF6 electrical equipments are detected by pressure sensor 18, temperature sensor 19 is believed
Number and temperature signal send control system 20 to, corresponding density is converted into by control system 20, and with being set in control system 20
Fixed density threshold is compared；When the gas density of SF6 electrical equipments is less than density threshold, step 3 is carried out；When more than
Step 4 is carried out during density threshold；
Step 3：Density monitor 15 controls proportioning valve 2, air inlet electromagnetic valve 3, and the gas of SF6 air supply tanks 6 is by electrically setting
Standby breather check valve 4, air inlet electromagnetic valve 3, proportioning valve 2 enter SF6 electrical equipments 1, and tonifying Qi, control are carried out to SF6 electrical equipments 1
System 20 adjusts 2 aperture of proportioning valve according to the detection signal of pressure sensor 18 and temperature sensor 19 and realizes tonifying Qi in time, close
Degree reaches desired value, closes proportioning valve 2, air inlet electromagnetic valve 3, stops tonifying Qi；
Step 4：Density monitor 15 controls proportioning valve 2, pressure-releasing electromagnetic valve 14, unnecessary gas in SF6 electrical equipments 1
SF6 gases recycling can 12 is entered by proportioning valve 2, pressure-releasing electromagnetic valve 14, control system 20 is according to pressure sensor 18 and temperature
The detection signal of sensor 19 adjusts 2 aperture of proportioning valve and realizes deflation in time, and density reaches desired value, closes proportioning valve 2, deflates
Solenoid valve 14, stops deflating, while vacuum transducer 11 detects the pressure of SF6 gases recycling can 12, when SF6 gases recycling can 12
Pressure close pressure-releasing electromagnetic valve when exceeding the recycling can pressure threshold set in control system 20, stop deflating；
Step 5：Vacuum pump 10 is opened, the gas of SF6 gases recycling can 12 is recycled to SF6 air supply tanks 6.
The present invention provides a kind of SF6 automatic densities regulating device, and it is inadequate can to solve density by Auto-regulating System of Density of Heavy Medium module B
It is excessive because of issuable leakage problem in tonifying Qi and deflation course with density, at the automation for realizing a small amount of tonifying Qi and deflation
Reason.
Claims (7)
1. a kind of on-line automatic density regulating apparatus of SF6, including SF6 electrical module A, SF6 electrical modules A are electrically set including SF6
Standby (1), density monitor (15), solenoid valve (16), connector (17), pressure sensor (18), temperature sensor (19), its feature
It is：Further include Auto-regulating System of Density of Heavy Medium module B, communication control module C；Auto-regulating System of Density of Heavy Medium module B includes SF6 air supply tanks (6), SF6 gases
Recycling can (12), air supply tank pressure sensor (7), air supply tank aerating mouth (8), proportioning valve (2), air inlet electromagnetic valve (3), electrically set
Standby breather check valve (4), air supply tank breather check valve (9), pressure-releasing electromagnetic valve (14), vacuum pump (10), vacuum transducer (11),
Pipeline, air supply tank aerating mouth (8) are arranged on SF6 air supply tanks (6), and SF6 air supply tanks are additionally provided with air supply tank pressure sensing on (6)
Device (7), is provided with vacuum transducer (11) on SF6 gases recycling can (12), in SF6 gases recycling can (12) and SF6 air supply tanks
(6) vacuum pump (10), air supply tank breather check valve (9), electrical equipment breather check valve (4), air inlet electromagnetism are equipped between successively
Valve (3), proportioning valve (2) are successively set between SF6 air supply tanks (6) and SF6 electrical equipments (1), pressure-releasing electromagnetic valve (14) one end
Connect SF6 gases recycling can (12), other end connection proportioning valve (2)；Communication control module includes control system (20), GPRS moulds
Block (21).
A kind of 2. on-line automatic density regulating apparatus of SF6 according to claim 1, it is characterised in that：Auto-regulating System of Density of Heavy Medium module B
Further include expander (5).
A kind of 3. on-line automatic density regulating apparatus of SF6 according to claim 1, it is characterised in that：Auto-regulating System of Density of Heavy Medium module B
Protection valve (13) is further included, between protection valve (13) one end connection proportioning valve (2) and SF6 electrical equipments (1), other end connection
SF6 gases recycling can (12), density monitor (15) are provided with overpressure alarm value, and the pressure set points of protection valve (13) are more than close
Spend the overpressure alarm value that relay (15) is set.
A kind of 4. on-line automatic density regulating apparatus of SF6 according to claim 1, it is characterised in that：Protection valve (13) be
Electric safe valve, protection valve (13) is electric contact signal output, and the power supply of access pressure-releasing electromagnetic valve (14) and proportioning valve (2) is returned
Road.
A kind of 5. on-line automatic density regulating apparatus of SF6 according to claim 1, it is characterised in that：Proportioning valve (2), into
Pneumoelectric magnet valve (3), pressure-releasing electromagnetic valve (14), it is solenoid valve (16), pipeline, SF6 air supply tanks (6), SF6 gases recycling can (12), true
Sky pump (10) integral sealing, SF6 gas detection sensors are installed in sealing shell, are detected whether there are the leakage of SF6 gases, such as
There are leakage, is alarmed by GPRS.
A kind of 6. on-line automatic density regulating apparatus of SF6 according to claim 1, it is characterised in that：Control system (20)
Density monitor verifying function is provided with, when closing solenoid valve (3), control system (20) can be by the density relay set up
Device verifying function realizes the verification to density monitor.
7. a kind of control method of such as on-line automatic density regulating apparatus of claim 1-6 any one of them SF6, including：
Step 1：Air supply tank pressure sensor (7) detects tonifying Qi pressure tank, and the air supply tank pressure with being set in control system (20)
Force threshold is compared, if tonifying Qi pressure tank is less than density threshold, by set GPRS module (21) notify maintenance department and
When supply SF6 gases；
Step 2：The pressure that the SF6 gases of SF6 electrical equipments are detected by pressure sensor (18), temperature sensor (19) is believed
Number and temperature signal send control system (20) to, corresponding density, and and control system are converted into by control system (20)
(20) density threshold of setting is compared in；When the gas density of SF6 electrical equipments is less than density threshold, step is carried out
Three；Step 4 is carried out when more than density threshold；
Step 3：Density monitor (15) control proportioning valve (2), air inlet electromagnetic valve (3), the gas of SF6 air supply tanks (6) pass through electricity
Gas equipment breather check valve (4), air inlet electromagnetic valve (3), proportioning valve (2) enter SF6 electrical equipments (1), to SF6 electrical equipments
(1) tonifying Qi is carried out, control system (20) is adjusted in time according to the detection signal of pressure sensor (18) and temperature sensor (19)
Proportioning valve (2) aperture realizes tonifying Qi, and density reaches desired value, closes proportioning valve (2), air inlet electromagnetic valve (3), stops tonifying Qi；
Step 4：Density monitor (15) control proportioning valve (2), pressure-releasing electromagnetic valve (14), it is unnecessary in SF6 electrical equipments (1)
Gas enters SF6 gases recycling can (12) by proportioning valve (2), pressure-releasing electromagnetic valve (14), and control system (20) is passed according to pressure
The detection signal of sensor (18) and temperature sensor (19) adjusts proportioning valve (2) aperture and realizes deflation in time, and density reaches suitable
Value, closes proportioning valve (2), pressure-releasing electromagnetic valve (14), stops deflating, while vacuum transducer (11) detection SF6 gas recycling cans
(12) pressure, when the pressure of SF6 gases recycling can (12) exceedes the recycling can pressure threshold of setting in control system (20)
Pressure-releasing electromagnetic valve is closed, stops deflating；
Step 5：Vacuum pump (10) is opened, the gas of SF6 gases recycling can (12) is recycled to SF6 air supply tanks (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428236.5A CN107943120A (en) | 2017-12-26 | 2017-12-26 | A kind of on-line automatic density regulating apparatus of SF6 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428236.5A CN107943120A (en) | 2017-12-26 | 2017-12-26 | A kind of on-line automatic density regulating apparatus of SF6 |
Publications (1)
| Publication Number | Publication Date |
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| CN107943120A true CN107943120A (en) | 2018-04-20 |
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Family Applications (1)
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| CN201711428236.5A Pending CN107943120A (en) | 2017-12-26 | 2017-12-26 | A kind of on-line automatic density regulating apparatus of SF6 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594916A (en) * | 2018-06-29 | 2018-09-28 | 上海乐研电气有限公司 | A kind of making-up air device and supplementing method for air of SF6 electrical equipments |
| CN110187265A (en) * | 2019-05-29 | 2019-08-30 | 知为力(成都)科技有限公司 | A kind of density monitor calibration equipment |
| CN110412461A (en) * | 2019-09-04 | 2019-11-05 | 上海乐研电气有限公司 | Transmitter and system for automatic on-line verification density monitor |
| CN110500503A (en) * | 2019-08-26 | 2019-11-26 | 西南石油大学 | A kind of gas high sealing rapid pressure adjusting system and method |
| CN110514996A (en) * | 2019-09-04 | 2019-11-29 | 上海乐研电气有限公司 | A kind of remodeling method of gas density relay |
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| CN108594916A (en) * | 2018-06-29 | 2018-09-28 | 上海乐研电气有限公司 | A kind of making-up air device and supplementing method for air of SF6 electrical equipments |
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| CN110500503A (en) * | 2019-08-26 | 2019-11-26 | 西南石油大学 | A kind of gas high sealing rapid pressure adjusting system and method |
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Application publication date: 20180420 |
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