CN206177540U - Power transformer stores up oil tank capsule automatic charging leak hunting device - Google Patents
Power transformer stores up oil tank capsule automatic charging leak hunting device Download PDFInfo
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- CN206177540U CN206177540U CN201621109287.2U CN201621109287U CN206177540U CN 206177540 U CN206177540 U CN 206177540U CN 201621109287 U CN201621109287 U CN 201621109287U CN 206177540 U CN206177540 U CN 206177540U
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Abstract
The utility model belongs to the technical field of transformer leak hunting device, in particular to power transformer stores up oil tank capsule automatic charging leak hunting device. The device includes air supply, flow rate regulating system, aerifys pressure maintaining system, the measurement and control system. The air inlet that pipeline and flow rate regulating system are passed through to the gas outlet of air supply links to each other, and flow rate regulating system's gas outlet links to each other with the air inlet of aerifing pressure maintaining system through the pipeline. The utility model discloses can show and reduce the transformer and store up the oil tank capsule and fill the artificial intervention that gas detection leaks the in -process, reduce the requirement to operating personnel self quality, alleviate operating personnel's burden, eliminate and excessively aerify the risk of damaging the capsule among the operation process, propose high pressure control accuracy and security.
Description
Technical field
The utility model belongs to transformer leakage detection apparatus technical field, more particularly to a kind of power transformer oil conservater capsule
Automatic inflating leakage detection apparatus.
Background technology
Power transformer is equipment important in power system, can by electromagnetic induction principle realize voltage, electric current and
The conversion of impedance parameter.At present, the transformer of voltage levels typically adopts mineral insulating oil as cooling and the medium for insulating,
Referred to as oil-filled transformer.In order to compensate the change of oil volume when oil temperature changes, it is equipped with the top of oil tank for oil immersion type transformer
The container of entitled oil conservater.Oil conservater is connected by the pipeline of its lower end with fuel tank, when oil temperature rising, oil volume expand, portion
Insulating oil is divided to flow into oil conservater from fuel tank；When oil temperature decline, oil volume reduce, SI semi-insulation oil flows into fuel tank from oil conservater,
So that all the time full of oil in fuel tank, oil level lifting caused by oil temperature change is only limited in oil conservater.The top of oil conservater has one
Pipeline and atmosphere, pipe end is referred to as respirator with the container of air directly contact, wherein being placed with drier to prevent
Moisture invades oil conservater by pipeline.
Oil conservater can be divided into open type and sealed two big class by structure, and the insulating oil in open type oil conservater directly connects
The air of tactile ullage, sealed Oil Tank is isolated insulating oil and air by installing volume compensation element additional, can be with
Effectively slow down the moisture absorption and oxidation of insulating oil.Compensating element, common at present has rubber capsule, diaphragm of rubber and metal bellows,
The sealed Oil Tank for being provided with capsule is referred to as capsule type oil storage cabinet.There is opening on capsule, the air in capsule is open by this
Pipeline, respirator at the top of Jing oil conservaters is communicated with air.Capsule is formed by potted component at opening with oil conservater shell
Sealing structure, by the space in oil conservater two parts are divided into：Capsule full of air and with atmosphere and full of insulation
Outside the capsule of oil and air exclusion.When oil level changes, capsule can realize volume compensation by flexible.
When capsule damage, rupture or bad mounting process, due sealing function just can not be played.Air, moisture etc.
Invade in oil easily by poorly sealed place so that oil quality deterioration accelerates.When having reason to suspect that above-mentioned situation occurs, for example, find
Gas content in insulating oil, water content etc. at short notice rapid increase when, it is therefore necessary to live inspection is carried out to the sealing of capsule
Look into.Known transformer capsule leak check method is inflation leak detection, i.e., be filled with capsule by the opening of capsule first
The gas of certain pressure makes it unfold completely in oil conservater, then tries to seal filling channel and stand, and can observation capsule
Initial pressure is kept in sufficiently long a period of time.According to the mechanical strength and the relevant parameter of transformer of capsule, capsule
The absolute pressure of gas and the pressure reduction of atmospheric pressure（Relative pressure）The general scope for requiring control in a few to tens of kPa；According to storage
The state of the size of Oil Tank, the height of oil level and capsule, needs the gas volume being filled with to be likely to be breached hundreds of to several kilolitres；According to
Leak check permissible accuracy, time of repose can from a few houres to tens hours.
When leak detection is inflated to transformer capsule, it is necessary to which the blowing pressure, speed are strictly controlled.Capsule material
Tearing strength it is not high, the blowing pressure is excessive, excessive velocities easily artificially cause capsule material over-stressed, causes capsule to produce
Permanent damage.The usual full manual manipulation mode for adopting, i.e. manual read's pressure power, manual modulation valve gate control inflation in industry
The mode of speed to the experience of operating personnel, be absorbed in that the competency profilings such as degree are higher, there is the risk that excessively inflation damages capsule.
Additionally, time of repose is longer, site environment temperature change it is larger in the case of, having carries out necessity of temperature correction to pressure.
The content of the invention
The purpose of this utility model is to provide a kind of automatic inflating leakage detection apparatus of power transformer oil conservater capsule, can
The speed inflated in power transformer oil conservater capsule is automatically adjusted, is reached and can be automatically stopped after preset pressure inflation, it is quiet
Gas pressure and temperature in capsule can be automatically recorded during putting, and over time, solution is manually operated will to peopleware
Ask high, there is a problem of the risk of excessively inflating artificial damage capsule.
Technical solution adopted in the utility model is：
A kind of power transformer oil conservater capsule automatic inflating leakage detection apparatus include that source of the gas, flow control system, inflation are protected
Pressure system, measurement and control system；The gas outlet of source of the gas is connected by pipeline with the air inlet of flow control system, Flow-rate adjustment
The gas outlet of system is connected by pipeline with the air inlet of inflation pressure-retaining system；The source of the gas is gases used for providing inflation,
Including pressure gas cylinder and pressure-reducing valve；The flow control system include regulating valve, cushion chamber, control valve one, flowmeter, two
Position three-way valve, pressure sensor one and safety valve one；The inflation pressure-retaining system includes that control valve two, gas-charging connection, temperature are passed
Sensor, pressure sensor two and safety valve two；The measurement and control system include that the computer equipped with TT＆C software, data are adopted
Truck and control circuit.
Further, the cushion chamber be one have 4 opening pressure hollow metal containers, by 4 opening respectively with
Pressure sensor one, safety valve one, regulating valve and control valve one connect.
Further, be provided between the cushion chamber and flowmeter control valve one, the flowmeter with inflation pressure-retaining system it
Between be provided with for switching emptying and connected state two-position three-way valve.
Further, there is control valve two one end of the inflation pressure-retaining system, and the other end has gas-charging connection, control valve two and stream
Amount regulating system is connected.
Further, flange face of the gas-charging connection comprising central aperture and the hollow gold that is tightly connected with flange face side
Category is managed, and the hollow space of metal tube is connected with the central aperture of flange face；There are 3 openings metal tube side, by 3 openings
It is connected with temperature sensor, pressure sensor two and safety valve two respectively.
The beneficial effects of the utility model are：The speed inflated toward transformer oil storage capsule, energy can be automatically adjusted
The enough pressure in capsule is automatically stopped inflation when reaching preset pressure, and pressurize shape can be automatically switched to after inflation terminates
State, can after into packing state automatically and continuously recording temperature and pressure over time, can after pressurize terminates from
Dynamic pressure release makes capsule return to normal pressure, can pressure exceed default threshold value in the case of releasing pressure automatically protection device and
The safety of capsule, can automatic detection bleed pressure whether enough, capsule pressure can be finely adjusted if necessary.With traditional manual
Inflation leak detection mode is compared, and manual intervention is few during whole inflation leak detection, and pressure controling precision is high, safe, reduces
Requirement to operating personnel's self diathesis, alleviates the burden of operating personnel, and the excessive inflation reduced in operating process is damaged
The risk of capsule.
Description of the drawings
Fig. 1 is power transformer oil conservater capsule automatic inflating leakage detection apparatus schematic diagram of the present utility model.
In figure, 1. source of the gas, 2. pressure gas cylinder, 3. pressure-reducing valve, 4. flow control system, 5. regulating valve, 6. cushion chamber,
7. valve one is controlled, 8. flowmeter, 9. two-position three-way valve, 10. pressure sensor one, 11. safety valves one, 12. inflation pressure-retaining systems,
13. control valves two, 14. gas-charging connections, 15. temperature sensors, 16. pressure sensors two, 17. safety valves two, 18. measurements and control
System processed.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail.
All control valves 7 and 13, regulating valve 5 are in closed mode under original state, and two-position three-way valve 9 is connected flow and adjusted
Section system 4 and inflation pressure-retaining system 12, disconnect air.
When the utility model is implemented：Transformer breather is pulled down, by gas-charging connection 14 and transformer breather pipeline lower end
Flange face sealing connection, the gas Jing pressure-reducing valves 3 in pressure gas cylinder 2 are decompressed to 0.2~0.5MPa（Absolute pressure）, this
Afterwards measurement and control system 18 are measured as follows and control：Two-position three-way valve 9 is controlled first connects air emptying；Then open
Control valve 1, gradually opens regulating valve 5 and monitors pressure sensor 1 and flowmeter 8, until flow reaches 30~40L/
In the range of min.Control valve 2 13 is opened, two-position three-way valve 9 is switched to into connection inflation pressure-retaining system 12, open gas Jing
Control valve 2 13, the transformer breather pipeline of gas-charging connection 14 is filled with oil conservater capsule, and supervised by pressure sensor 2 16
The pressure surveyed at gas-charging connection 14 and the draught head relative pressure of atmospheric pressure.Carried out according to the reading of pressure sensor 2 16 as follows
Adjust：When relative pressure is less than 5kPa, flow is set to be maintained at the scope of 30~40L/min by regulating valve 5；When relative pressure
Power makes flow be maintained at the scope of 20~30L/min in the range of 5~8.5kPa by regulating valve 5；When relative pressure reaches
During 8.5kPa, flow is set to be maintained at the scope of 10~20L/min by regulating valve 5；When relative pressure reaches 9.5kPa, close
Control valve 1, control valve 2 13, completely close regulating valve 5, and gas replenishment process terminates, into packing state.
Into after packing state, measurement and control system 18 start timing, and every 1 minute a temperature sensor 15 was recorded
With the reading of pressure sensor 2 16, terminate until the default dwell time.
After dwell time terminates, measurement and control system 18 are controlled as follows：Control two-position three-way valve 9 first to connect greatly
Gas is emptied, and then opens control valve 1, control valve 2 13, makes flow control system 4, inflation pressure-retaining system 12 and oil conservater glue
Barotropic gas in capsule is discharged by two-position three-way valve 9, completes pressure release.
Automatic protection under overvoltage condition is realized in the following way：When measurement and control system 18 are monitored in gas replenishment process
To pressure sensor 2 16 reading relative pressure more than 10kPa when, closing control valve 2 13 protection capsule, keep control valve one
7 open, the control emptying pressure release of two-position three-way valve 9, close regulating valve 5；When relative pressure exceedes in cushion chamber 6 in gas replenishment process
When relative pressure at 50kPa or gas-charging connection 14 is more than 12kPa, safety valve 1, safety valve 2 17 can also be automatically turned on and let out
Pressure.
The pressure monitoring of source of the gas 1 is realized in the following way：When the opening degree of regulating valve 5 maximum also cannot reach in gas replenishment process
During to default range of flow, measurement and control system 18 send the not enough warning prompt of bleed pressure.
The fine setting of capsule pressure is realized in the following way：When needing slightly to increase glue intraluminal pressure, two-position three-way valve 9 connects
Logical inflation pressure-retaining system 12, control valve 1 is closed, by regulating valve 5 be inflated to in cushion chamber 6 relative pressure reach 40~
45kPa, is then shut off regulating valve 5, opens control valve 1 and control valve 2 13, makes cushion chamber 6 reach pressure with the gas in capsule
Dynamic balance, because the volume of cushion chamber 6 is much smaller than capsule volume, capsule pressure can only produce small rising；It is small size when needing
When reducing glue intraluminal pressure, control valve 1, control valve 2 13 are closed, and two-position three-way valve 9 is emptied, and the control short time of valve 2 13 beats
To open recover after pressure release and close, realize that glue intraluminal pressure edges down by adjusting opening time.Repeatable above procedure is used for capsule pressure
Power is finely tuned.
The utility model is not limited to above-described specific embodiment, the foregoing is only of the present utility model preferable
Case study on implementation, not to limit the utility model, it is all made within spirit of the present utility model and principle it is any
Modification, equivalent and improvement etc., should be included within protection domain of the present utility model.
Claims (5)
1. a kind of power transformer oil conservater capsule automatic inflating leakage detection apparatus, it is characterised in that：Including source of the gas（1）, flow adjust
Section system（4）, inflation pressure-retaining system（12）, measurement and control system（18）；Source of the gas（1）Gas outlet adjusted by pipeline and flow
Section system（4）Air inlet be connected, flow control system（4）Gas outlet by pipeline with inflation pressure-retaining system（12）Air inlet
Mouth is connected；The source of the gas（1）It is gases used for providing inflation, including pressure gas cylinder（2）And pressure-reducing valve（3）；The stream
Amount regulating system（4）Including regulating valve（5）, cushion chamber（6）, control valve one（7）, flowmeter（8）, two-position three-way valve（9）, pressure
Sensor one（10）With safety valve one（11）；The inflation pressure-retaining system（12）Including control valve two（13）, gas-charging connection（14）、
Temperature sensor（15）, pressure sensor two（16）With safety valve two（17）；The measurement and control system（18）Including being equipped with
The computer of TT＆C software, data collecting card and regulating valve, control valve, the control circuit of two-position three-way valve.
2. power transformer oil conservater capsule automatic inflating leakage detection apparatus according to claim 1, it is characterised in that：It is described
Cushion chamber（6）Be one have 4 opening pressure hollow metal containers, by 4 opening respectively with pressure sensor one（10）、
Safety valve one（11）, regulating valve（5）With control valve one（7）Connection.
3. power transformer oil conservater capsule automatic inflating leakage detection apparatus according to claim 1, it is characterised in that：It is described
Cushion chamber（6）With flowmeter（8）Between be provided with control valve one（7）, the flowmeter（8）With inflation pressure-retaining system（12）Between set
There is the two-position three-way valve for switching emptying and connected state（9）.
4. power transformer oil conservater capsule automatic inflating leakage detection apparatus according to claim 1, it is characterised in that：It is described
Inflation pressure-retaining system（12）One end have control valve two（13）, the other end has gas-charging connection（14）, control valve two（13）With flow
Regulating system（4）It is connected.
5. power transformer oil conservater capsule automatic inflating leakage detection apparatus according to claim 1, it is characterised in that：It is described
Gas-charging connection（14）Flange face comprising central aperture and the hollow metal pipe being tightly connected with flange face side, and metal tube
Hollow space is connected with the central aperture of flange face；There are 3 openings metal tube side, by 3 opening respectively with TEMP
Device（15）, pressure sensor two（16）With safety valve two（17）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109287.2U CN206177540U (en) | 2016-10-10 | 2016-10-10 | Power transformer stores up oil tank capsule automatic charging leak hunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109287.2U CN206177540U (en) | 2016-10-10 | 2016-10-10 | Power transformer stores up oil tank capsule automatic charging leak hunting device |
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| Publication Number | Publication Date |
|---|---|
| CN206177540U true CN206177540U (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621109287.2U Active CN206177540U (en) | 2016-10-10 | 2016-10-10 | Power transformer stores up oil tank capsule automatic charging leak hunting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588911A (en) * | 2017-09-27 | 2018-01-16 | 国网山西省电力公司检修分公司 | Portable transformer oil conservater capsule air-leakage detector |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
| CN109000858A (en) * | 2018-06-20 | 2018-12-14 | 国家电网公司 | The complete detection system of Multifunction transformer |
| CN109916577A (en) * | 2019-03-28 | 2019-06-21 | 国家电网有限公司 | Conservator capsule detection method, system and terminal device |
| CN110146235A (en) * | 2019-05-27 | 2019-08-20 | 国网冀北电力有限公司廊坊供电公司 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
| CN116380409A (en) * | 2023-06-06 | 2023-07-04 | 核工业西南物理研究院 | Fusion reactor cladding ball bed high-temperature gas flow resistance characteristic measuring device and method |
-
2016
- 2016-10-10 CN CN201621109287.2U patent/CN206177540U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588911A (en) * | 2017-09-27 | 2018-01-16 | 国网山西省电力公司检修分公司 | Portable transformer oil conservater capsule air-leakage detector |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
| CN109000858A (en) * | 2018-06-20 | 2018-12-14 | 国家电网公司 | The complete detection system of Multifunction transformer |
| CN109916577A (en) * | 2019-03-28 | 2019-06-21 | 国家电网有限公司 | Conservator capsule detection method, system and terminal device |
| CN110146235A (en) * | 2019-05-27 | 2019-08-20 | 国网冀北电力有限公司廊坊供电公司 | Transformer suppresses leak test dedicated unit and suppresses leak test test method |
| CN116380409A (en) * | 2023-06-06 | 2023-07-04 | 核工业西南物理研究院 | Fusion reactor cladding ball bed high-temperature gas flow resistance characteristic measuring device and method |
| CN116380409B (en) * | 2023-06-06 | 2023-08-08 | 核工业西南物理研究院 | Fusion reactor cladding ball bed high-temperature gas flow resistance characteristic measuring device and method |
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