CN203191503U - Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test - Google Patents
Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test Download PDFInfo
- Publication number
- CN203191503U CN203191503U CN 201320102440 CN201320102440U CN203191503U CN 203191503 U CN203191503 U CN 203191503U CN 201320102440 CN201320102440 CN 201320102440 CN 201320102440 U CN201320102440 U CN 201320102440U CN 203191503 U CN203191503 U CN 203191503U
- Authority
- CN
- China
- Prior art keywords
- liquid
- current
- constant
- high voltage
- extra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a constant current discharge device used after an ultra high voltage long cable direct current voltage withstand test. Discharge of a ultra high voltage long cable after the voltage withstand test is carried out through a mixed conductive liquid, a current value decreases as electrical charges lose gradually during a discharge process, a constant current control unit can realize opening of a conductive valve between a conductive liquid storage chamber and a synthetic liquid storage chamber according to change of the current value, resistance of the mixed conductive liquid in the synthetic liquid storage chamber is reduced to improve the current value, so current of the mixed conductive liquid is kept to be in a fixed value state in a discharge process, moreover, discharge time is shortened, and the constant current discharge device is applicable to various conditions.
Description
Technical field
The utility model relates to a kind of for behind the long DC testing of cables of extra-high voltage, the long cable of extra-high voltage is implemented the device of quick constant-current discharge.
Background technology
Along with country builds the extra-high voltage intelligent grid energetically, will drop into extra-high voltage equipment in a large number, a large amount of extra-high voltage equipments certainly will bring the great development of extra-high voltage testing equipment.After the long cable voltage test of direct current extra-high voltage, effluve is a problem always, the extra-high voltage discharge is the work of a danger, adopt constant-resistance discharge time overlength, ultra-long time deposit electricity, the pressure-resistant time of having given long cable extension, withstand voltage script is exactly a destructive test, and the long cable of extra-high voltage is deposited electricity for a long time and is had certain risk, so need a big capacity of extra-high voltage electric discharge device in short-term.
Because the electric capacity of extra-high-tension cable is quite big, after the extra-high voltage direct-current withstand voltage test, stored the electric energy of suitable macro-energy in the cable, it is worthless adopting the manual discharge, as adopting by the divider self discharge, to use the long duration, ultra-long time deposit electricity, the pressure-resistant time of having given long cable extension, withstand voltage script is exactly a destructive test, and the long cable of extra-high voltage is deposited electricity for a long time and is had certain risk, so need a big capacity of extra-high voltage electric discharge device in short-term
Also had in recent years and adopt advanced remote control discharge car to discharge, but remote control discharge car cost is higher, the place also there is requirement, sometimes can't launch in the new transformer station that builds, in addition because it is constant-resistance discharge, uncontrollable to discharge time, discharge is very fast, backward more and more slower when voltage is high.
The utility model content
It is a kind of for the constant-current discharging device behind the long DC testing of cables of extra-high voltage that the utility model purpose is to provide, it can be according to the discharge current size, control conduction liquid water resistance, realize constant-current discharge, solved long problem discharge time after the long cable voltage test of extra-high voltage, make things convenient for again in various places and operate, can realize that also operated from a distance makes operating personnel not have the sorrow of safety.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, the device of the long DC testing of cables of extra-high voltage comprises the high voltage direct current generator that is in series, current-limiting resistance, microampere order reometer and the long cable of extra-high voltage to be measured, the device of the long DC testing of cables of extra-high voltage is provided with the cable core access point between reometer and current-limiting resistance, constant-current discharging device comprises conduction liquid mixed cell, the flexible insulated hose of constant current control module and stube cable core access point and conduction liquid mixed cell, described conduction liquid mixed cell is used for hybrid conductive liquid and water and when discharge mixed conduction liquid pump is gone into flexible insulated hose, conduction liquid in the flexible insulated hose is flowed through and is flowed back to conduction liquid mixed cell again behind the cable core access point, conduction liquid mixed cell bottom is provided with for the electrically charged ground connection row who brings the earth into of hybrid conductive liquid institute, and described constant current control module is used for measuring the discharge current of hybrid conductive liquid in the flexible insulated hose of discharge process and conducts electricity the resistance of the hybrid conductive liquid in the liquid mixed cell according to the discharge current value size adjustment that records.
For technique scheme, utility model people also has further optimization embodiment.
As optimization, described conduction liquid mixed cell comprises conduction liquid storage chamber, water storage box, synthetic liquid storage chamber, leads electro hydraulic valve, water valve and water resistance presetting circuit, the liquid outlet of conduction liquid storage chamber with lead the electro hydraulic valve back that links to each other and insert synthetic liquid and store up the chamber, the water delivering orifice of water storage box inserts synthetic liquid storage chamber in the back that links to each other with water valve, electro hydraulic valve and water valve are led in described water resistance presetting circuit control, are used for the ratio that the synthetic liquid of regulating and controlling stores up indoor conduction liquid and water.
As optimization, described synthetic liquid storage is indoor to be provided with for the liquid level emasuring device of measuring synthetic liquid storage chamber liquid level, described liquid level emasuring device records water in the mixed electrolytic solution because electrolysis gasification when causing liquid level to descend, and control is opened water valve and stored up the indoor standard liquid level that is filled to synthetic liquid automatically.In addition, the indoor stirrer that is equipped with of synthetic liquid storage is used for hybrid conductive liquid is stirred.
Further,, being provided with heat-pipe radiator in the described conduction liquid mixed cell, described heat-pipe radiator is located between synthetic liquid storage chamber and the water storage box, be provided with seal pad between synthetic liquid storage chamber and the water storage box, heat-pipe radiator is used for synthesizing the indoor heat of liquid storage and reaches water storage box and dispel the heat.
Further, the inlet mouth pipe side of synthetic liquid storage chamber is equipped with gas outlet, and synthetic liquid stores up the gas of indoor electrolysis generation and realizes that through gas outlet automatic gas-liquid separates, and separates back gas and discharges through gas outlet, the synthetic liquid storage of the liquid inflow chamber of condensing.
As optimization, described constant current control module comprises current measurement circuit and constant-current control circuit, described current measurement circuit is used for measuring the current value of hybrid conductive liquid in the flexible insulated hose, described constant-current control circuit is opened according to the discharge current value size adjustment that records and is led electro hydraulic valve, reduces the resistance that synthetic liquid stores up indoor hybrid conductive liquid.
Further, also be provided with main control room and radio receiver in the described constant-current discharging device, main control room is regulated constant current control module and water resistance presetting circuit by instruction, the control signal that the radio receiver that links to each other with main control room then is used for receiving remote realizes the Long-distance Control to constant-current discharging device work.
As optimization, described cable core access point for the metallic conduction thing make two logical, two logical upper ends are provided with the hollow circular hole that is connected with the cable high-pressure side, two logical two ends are connected with flexible insulated hose by rapid-acting coupling.
With respect to scheme of the prior art, the utility model has the advantages that:
1. the utility model has been described a kind of for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it discharges by the long cable of extra-high voltage of hybrid conductive liquid after to withstand voltage test, in discharge process, along with causing current value, charge loss descends, the constant current control module can be opened the electro hydraulic valve of leading that conducts electricity between liquid storage chamber and the synthetic liquid storage chamber according to the variation of current value, reduce the resistance of the indoor hybrid conductive liquid of synthetic liquid storage, and then raising current value, make that the electric current of hybrid conductive liquid is in a definite value state all the time in the discharge process, simultaneously also just shorten discharge time, be applicable to various operating modes;
2. the utility model also can again in conjunction with the main control room of constant-current discharging device end, be realized the integral body control to constant-current discharge work by the control signal of radio receiver receiving remote, further improves safety of operators.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the one-piece construction synoptic diagram of the utility model embodiment;
Fig. 2 is the wiring schematic diagram of the cable core access point of the utility model embodiment;
Fig. 3 is the principle of work block diagram of the utility model embodiment;
Wherein: 1, ground connection row; 2, master controller; 3, conduction liquid storage chamber; 4, heat-pipe radiator; 5, synthetic liquid stores up the chamber; 6, stirrer; 7, manual bleeder valve; 8, liquid outlet; 9, water valve; 10, water storage box; 11, fast connector; 12, flexible insulated hose; 13, cable core access point; 14, gas outlet; 15, pump valve; 16, inlet; 17, lead electro hydraulic valve.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit scope of the present utility model for explanation the utility model.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment:
Present embodiment has been described a kind of for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, the circuit diagram of the long DC testing of cables of extra-high voltage as shown in Figure 2, test unit comprises high voltage direct current generator, current-limiting resistance, microampere order reometer and the long cable of extra-high voltage to be measured that is in series, and the device of the long DC testing of cables of extra-high voltage is provided with cable core access point 13 between reometer and current-limiting resistance.
And the one-piece construction of constant-current discharging device as shown in Figure 1, it comprises conduction liquid mixed cell, the flexible insulated hose 12 of constant current control module and stube cable core access point 13 and conduction liquid mixed cell, described conduction liquid mixed cell is used for hybrid conductive liquid and water and when discharge mixed conduction liquid pump is gone into flexible insulated hose 12, conduction liquid in the flexible insulated hose 12 are flowed through and are flowed back to conduction liquid mixed cell again behind the cable core access point 13, conduction liquid mixed cell bottom is provided with for the electrically charged ground connection row 1 who brings the earth into of hybrid conductive liquid institute, and described constant current control module is used for measuring the discharge current of hybrid conductive liquid in the flexible insulated hose 12 of discharge process and conducts electricity the resistance of the hybrid conductive liquid in the liquid mixed cell according to the discharge current value size adjustment that records.
Described conduction liquid mixed cell comprises conduction liquid storage chamber 3, water storage box 10, synthetic liquid storage chamber 5, leads electro hydraulic valve 17, water valve 9 and water resistance presetting circuit, the liquid outlet 8 of conduction liquid storage chamber 3 with lead electro hydraulic valve 17 back that links to each other and insert synthetic liquid and store up chamber 5, the water delivering orifice of water storage box 10 inserts synthetic liquid storage chamber 5 in the back that links to each other with water valve 9, electro hydraulic valve 17 and water valve 9 are led in described water resistance presetting circuit control, are used for the ratio of the synthetic liquid storage of regulating and controlling chamber 5 interior conduction liquid and water.
Be provided with for the liquid level emasuring device of measuring synthetic liquid storage chamber 5 liquid levels in the described synthetic liquid storage chamber 5, described liquid level emasuring device records water in the mixed electrolytic solution because electrolysis gasification when causing liquid level to descend, and control is opened water valve 9 and stored up in the chamber 5 to synthetic liquid and be filled to the standard liquid level automatically.In addition, synthetic liquid storage is equipped with stirrer 6 in the chamber 5, is used for hybrid conductive liquid is stirred.
Be provided with heat-pipe radiator 4 in the described conduction liquid mixed cell, described heat-pipe radiator 4 is located between synthetic liquid storage chamber 5 and the water storage box 10, be provided with seal pad between synthetic liquid storage chamber 5 and the water storage box 10, heat-pipe radiator 4 is used for synthesizing liquid storage chamber 5 interior heats and reaches water storage box 10 and dispel the heat.
16 mouthfuls of pipes of inlet side of synthetic liquid storage chamber 5 is equipped with gas outlet 14, and the gas that electrolysis produces in the synthetic liquid storage chamber 5 realizes that through gas outlet 14 automatic gas-liquid separates, and separates back gas and discharges through gas outlet 14, and the liquid that condenses flows into synthetic liquid storage chamber 5.
Described constant current control module comprises current measurement circuit and constant-current control circuit, described current measurement circuit is used for measuring the current value of hybrid conductive liquid in the flexible insulated hose 12, described constant-current control circuit is opened according to the discharge current value size adjustment that records and is led electro hydraulic valve 17, reduces the resistance of hybrid conductive liquid in the synthetic liquid storage chamber 5.
Also be provided with main control room 2 and radio receiver in the described constant-current discharging device, main control room 2 is regulated constant current control module and water resistance presetting circuit by instruction, the control signal that the radio receiver that links to each other with main control room 2 then is used for receiving remote realizes the Long-distance Control to constant-current discharging device work.
Described cable core access point 13 for the metallic conduction thing make two logical, two logical upper ends are provided with the hollow circular hole that is connected with the cable high-pressure side, two logical two ends are connected with flexible insulated hose 12 by rapid-acting coupling.
The principle of work block diagram of constant-current discharging device is as shown in Figure 3, and is specific as follows:
Before the withstand voltage test of direct current extra-high voltage, main control room 2 at first starts the water resistance presetting circuit, the water resistance presetting circuit is led the switching of electro hydraulic valve 17 and water valve 9 according to preset value control, regulates conduction liquid in the synthetic liquid storage chamber 5 and the ratio of water, makes hybrid conductive liquid reach default resistance value.After withstand voltage test is finished, the long-range control signal of sending of user, the constant-current discharging device end then receives steering order and then starts the turnover pump valve 15 that main control room 2 is opened hybrid conductive liquid by radio receiver, makes the conduction mixed liquor enter flexible insulated hose 12 and constitutes power circuit realization circulation discharge.In the discharge process, discharge current diminishes along with reducing of voltage, pass through current measurement circuit, measure the discharge current in the hybrid conductive liquid in the insulation tube, again by constant-current control circuit according to the discharge current value size, control is led electro hydraulic valve 17 and is opened and closed and will conduct electricity liquid and introduce synthetic liquid storage chamber 5, thereby reduces the resistance of hybrid conductive liquid, and discharge current is stablized.
In addition, synthetic liquid storage 5 bottoms, chamber are positioned at the place of liquid outlet 8, and a manual bleeder valve 7 is arranged, and after test is all finished, whole liquid can be emitted fully.
Above-mentioned example only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the utility model spirit essence all should be encompassed within the protection domain of the present utility model.
Claims (9)
1. constant-current discharging device that is used for behind the long DC testing of cables of extra-high voltage, the device of the long DC testing of cables of extra-high voltage comprises the high voltage direct current generator that is in series, current-limiting resistance, microampere order reometer and the long cable of extra-high voltage to be measured, it is characterized in that, the device of the long DC testing of cables of extra-high voltage is provided with the cable core access point between reometer and current-limiting resistance, constant-current discharging device comprises conduction liquid mixed cell, the flexible insulated hose of constant current control module and stube cable core access point and conduction liquid mixed cell, described conduction liquid mixed cell is used for hybrid conductive liquid and water and when discharge mixed conduction liquid pump is gone into flexible insulated hose, conduction liquid in the flexible insulated hose is flowed through and is flowed back to conduction liquid mixed cell again behind the cable core access point, conduction liquid mixed cell bottom is provided with for the electrically charged ground connection row who brings the earth into of hybrid conductive liquid institute, and described constant current control module is used for measuring the discharge current of hybrid conductive liquid in the flexible insulated hose of discharge process and conducts electricity the resistance of the hybrid conductive liquid in the liquid mixed cell according to the discharge current value size adjustment that records.
2. according to claim 1 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, described conduction liquid mixed cell comprises conduction liquid storage chamber, water storage box, synthetic liquid storage chamber, leads electro hydraulic valve, water valve and water resistance presetting circuit, the liquid outlet of conduction liquid storage chamber with lead the electro hydraulic valve back that links to each other and insert synthetic liquid and store up the chamber, the water delivering orifice of water storage box inserts synthetic liquid storage chamber in the back that links to each other with water valve, electro hydraulic valve and water valve are led in described water resistance presetting circuit control, are used for the ratio that the synthetic liquid of regulating and controlling stores up indoor conduction liquid and water.
3. according to claim 2 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, described synthetic liquid storage is indoor to be provided with for the liquid level emasuring device of measuring synthetic liquid storage chamber liquid level, described liquid level emasuring device records water in the mixed electrolytic solution because electrolysis gasification when causing liquid level to descend, and control is opened water valve and stored up the indoor standard liquid level that is filled to synthetic liquid automatically.
4. according to claim 2ly it is characterized in that for the constant-current discharging device behind the long DC testing of cables of extra-high voltage that the indoor stirrer that is equipped with of synthetic liquid storage is used for hybrid conductive liquid is stirred.
5. according to claim 2 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, be provided with heat-pipe radiator in the described conduction liquid mixed cell, described heat-pipe radiator is located between synthetic liquid storage chamber and the water storage box, be provided with seal pad between synthetic liquid storage chamber and the water storage box, heat-pipe radiator is used for synthesizing the indoor heat of liquid storage and reaches water storage box and dispel the heat.
6. according to claim 2 or 3 or 4 or 5 described for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, the inlet mouth pipe side of synthetic liquid storage chamber is equipped with gas outlet, synthetic liquid stores up the gas of indoor electrolysis generation and realizes that through gas outlet automatic gas-liquid separates, separate back gas and discharge through gas outlet, the liquid that condenses flows into synthetic liquid storage chamber.
7. according to claim 1 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, described constant current control module comprises current measurement circuit and constant-current control circuit, described current measurement circuit is used for measuring the current value of hybrid conductive liquid in the flexible insulated hose, described constant-current control circuit is opened according to the discharge current value size adjustment that records and is led electro hydraulic valve, reduces the resistance that synthetic liquid stores up indoor hybrid conductive liquid.
8. according to claim 2 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, also be provided with main control room and radio receiver in the described constant-current discharging device, main control room is regulated constant current control module and water resistance presetting circuit by instruction, the control signal that the radio receiver that links to each other with main control room then is used for receiving remote realizes the Long-distance Control to constant-current discharging device work.
9. according to claim 1 for the constant-current discharging device behind the long DC testing of cables of extra-high voltage, it is characterized in that, described cable core access point for the metallic conduction thing make two logical, two logical upper ends are provided with the hollow circular hole that is connected with the cable high-pressure side, and two logical two ends are connected with flexible insulated hose by rapid-acting coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102440 CN203191503U (en) | 2013-03-07 | 2013-03-07 | Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102440 CN203191503U (en) | 2013-03-07 | 2013-03-07 | Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191503U true CN203191503U (en) | 2013-09-11 |
Family
ID=49108355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320102440 Expired - Lifetime CN203191503U (en) | 2013-03-07 | 2013-03-07 | Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203191503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163434A (en) * | 2013-03-07 | 2013-06-19 | 苏州科技学院 | Constant current discharging device for ultra-high voltage long cable after direct-current withstand voltage test |
-
2013
- 2013-03-07 CN CN 201320102440 patent/CN203191503U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163434A (en) * | 2013-03-07 | 2013-06-19 | 苏州科技学院 | Constant current discharging device for ultra-high voltage long cable after direct-current withstand voltage test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103163434B (en) | Constant current discharging device for ultra-high voltage long cable after direct-current withstand voltage test | |
| CN104282965B (en) | A kind of lithium ion battery self-heating apparatus and method | |
| CN203326671U (en) | Control circuit for electronic cigarette case | |
| CN103999263B (en) | Electrolyte metering device for lithium cells | |
| TW201330452A (en) | Charging apparatus for electric vehicles | |
| CN209708788U (en) | A kind of transformer oiling auxiliary system | |
| CN103138020A (en) | Charging method and charging device and charging apparatus suitable for various batteries | |
| CN104632156A (en) | Cluster gas well dosing device and intelligent effusion-diagnosis and effusion quantity-calculation method | |
| CN203191503U (en) | Constant current discharge device used after ultra high voltage long cable direct current voltage withstand test | |
| CN107415709A (en) | Hybrid power system for hybrid power passenger car | |
| CN102608543B (en) | Flow battery test platform | |
| CN104300605B (en) | Power circuit and control method thereof | |
| CN207106200U (en) | A kind of charging device of electric automobile for up-down cross sliding type multi-storied garage | |
| CN201781311U (en) | Simple portable storage battery charger for direct current panel | |
| CN106451658A (en) | Charge/discharge control circuit for forming storage battery | |
| CN205029420U (en) | Solar energy commercial power complementation that voltage is adjustable stake of charging | |
| CN206135436U (en) | Charging pile for electric vehicle | |
| CN104795865B (en) | A kind of battery charging quickly controller and control method | |
| CN209592548U (en) | Bidirectional output charging gun | |
| CN201485906U (en) | Double-channel control water feeding device | |
| CN207457382U (en) | Electrolytic capacitor surge test frock | |
| CN205670560U (en) | Injecting electrolytic solution device | |
| CN103499734B (en) | Lead-acid battery charger rapid and handy formula tester | |
| CN206602398U (en) | A kind of electric device with solar charging/discharging | |
| CN208603101U (en) | Mobile dustbin and the charging system based on movement dustbin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130911 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |