CN201600222U - Portable vacuum degree tester of high-voltage vacuum switch - Google Patents
Portable vacuum degree tester of high-voltage vacuum switch Download PDFInfo
- Publication number
- CN201600222U CN201600222U CN2010201132363U CN201020113236U CN201600222U CN 201600222 U CN201600222 U CN 201600222U CN 2010201132363 U CN2010201132363 U CN 2010201132363U CN 201020113236 U CN201020113236 U CN 201020113236U CN 201600222 U CN201600222 U CN 201600222U
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- vacuum
- vacuum degree
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- capacitor
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 230000005684 electric field Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 230000005622 photoelectricity Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000013500 data storage Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to a portable vacuum degree tester of a high-voltage vacuum switch, which is characterized by comprising a magnet exciting coil, a testing control system and a lithium ion power supply system, wherein the magnet exciting coil is a flat-cable type hollow cylindrical coil; all wires are connected in series; two ends of the coil are connected by a parallel port; the magnet exciting coil is wound at the middle part of a vacuum arc extinguish chamber; electric discharge is conducted on the magnet exciting coil by a capacitor; the testing control system is used for controlling generation of a pulse magnetic field and a pulse electric field, and measurement, conversion and display of ion current; and the lithium ion power supply system is used for providing 220V/50Hz sine wave alternating current and 24V direct current. The portable vacuum degree tester improves the sensitivity for measuring the vacuum degree without disassembling the vacuum arc extinguish chamber and the efficiency of generating the high-voltage electric field and the magnetic field, improves the measuring accuracy, and adopts piecewise linearization processing on an ion current-vacuum degree curve in a data storage, thus guaranteeing more accurate corresponding vacuum degree values under different ion current orders of magnitude.
Description
Technical field
The utility model design be a kind of vacuum degree measuring instrument, particularly a kind of vacuum switch vacuum degree tester based on portable lithium ion power supply belongs to the proving installation of vacuum degree of vacuum switch.
Background technology
The use of vacuum circuit breaker is that very big ratio is occupied in the pressure field in low pressure reaches at present, and it is to be the device for switching of insulation and blow-out medium with the vacuum, also will replace SF gradually in the high pressure field from now on
6Isolating switch.Vacuum circuit breaker is compared with the other types isolating switch, has advantages such as safe and reliable, that the life-span is long, maintenance load is little, environment is not contaminated.Vacuum interrupter is the core of vacuum circuit breaker.For disjunction and the arc extinguishing of realizing electric current, the indoor pressure of vacuum extinction generally is not higher than 6.6 * 10
-2Pa.Therefore, vacuum tightness is one of the principal element of the break performance of decision vacuum interrupter, and the reduction of vacuum tightness will directly influence the connecting-disconnecting function of vacuum circuit breaker, will cause it to cut-off complete failure when serious.Through further retrieval to prior art, find that the patent No. is 99202784.5, name is called the switching tube vacuum degree measuring instrument.This patent readme is: the purpose of this utility model, cause the corrupted problem of switching tube insulating property easily when having solved with industrial frequency withstand voltage method measuring switch pipe vacuum tightness.This instrument volume is little, in light weight, easy to carry, and method of testing is easy, and reading is directly perceived, and the result is accurate.It is widely used in the vacuum state of test vacuum switch tube, is specially adapted to installing plate face complexity, the occasion of dismounting inconvenience.Find that again application number is 02137505.4, name is called vacuum measuring instrument for vacuum switch with undetached arc extinguishing chamber.This patent readme is: the utlity model has substantive distinguishing features and marked improvement, axial magnetic field and solenoid that employed two semicircle combined magnetic field coils produce are suitable, have improved the vacuum measurement sensitivity of not dismantling vacuum interrupter; Adopt digital light to isolate and electromangnetic spectrum, strengthened the antijamming capability of vacuum degree measuring instrument device every photoelectricity; Adopt security protection technology, guaranteed the personal safety of device operator; Adopt the character reminding of liquid crystal display, make the operation of instrument convenient with use.But above-mentioned patented technology measuring error rate is big, and precision is low, and outdoor no civil power can't be measured.
The utility model content
The purpose of this utility model is to remedy the deficiencies in the prior art, and a kind of vacuum switch vacuum degree tester based on portable lithium ion power supply is provided, and the measuring error rate is low, the precision height, and have the characteristics of outdoor no civil power conditional operation.
For achieving the above object, the utility model provides a kind of portable high-pressure vacuum switch vacuum degree tester, it is characterized in that comprising:
Field coil, field coil are a kind of air-cored cylindrical coils of winding displacement formula, are connected in series between each root lead, and the coil two ends join by the parallel port, and field coil is wrapped in the vacuum interrupter middle part, by electric capacity field coil is discharged;
TT﹠C system is used for the generation of gating pulse magnetic field and impulse electric field, and the measurement of gas current, conversion and demonstration;
The lithium-ion electric origin system is used to provide the sine wave alternating current of 220V/50Hz and the direct current of 24V.
TT﹠C system comprises that rectification circuit, thyristor, DC/DC circuit, current-limiting resistance, A/D change-over circuit, digital light are every, ATmega16 single-chip microcomputer, photoelectricity isolation and driver, photoisolator, capacitor C 1, C2, sample resistance Re.By the ATmega16 Single-chip Controlling, give capacitor C 1 charging, voltage on the capacitor C 1 reaches predetermined value, ATmega16 Single-chip Controlling high voltage step-up, the secondary high voltage of stepup transformer outputs on the contact of arc-chutes, trigger thyristor VT1 conducting simultaneously, thereby make 1 pair of field coil discharge of capacitor C, when the magnetic field that field coil produces reaches a certain critical value, the interpolar of vacuum interrupter can produce gas current, gas current is through sample resistance Re, the AD sampling, digital light every after be input to the ATmega16 single-chip microcomputer, calculate through being stored in gas current in the data-carrier store-vacuum tightness fitting formula, the result is presented on the liquid crystal display.
The lithium-ion electric origin system comprises: the 24V lithium ion battery, the high frequency booster circuit, transformer, full bridge rectifier and full bridge inverter, the sinewave output of lithium ion power supply output is through inversion, high frequency boosts, obtain after process full-bridge rectification and the full-bridge inverting again, the high frequency booster circuit adopts push-pull configuration, control chip is selected SG3525 for use, input voltage one terminates at the centre tap on the former limit of transformer, the other end is connected on the mid point of switching tube S1 and S2, the PWM ripple control S1 of the complementary symmetry of SG3525 output two-way and S2 take turns conducting, form the alternating voltage of high frequency on the former limit of transformer, boost through high-frequency transformer, rectification and filtering obtain about 350V DC voltage on capacitor C 3, pass through the full bridge inverter output AC voltage at last.Adopt the ATmega16 single-chip microcomputer, utilize the method for software to obtain required SPWM signal, the timer of ATMega16 single-chip microcomputer/timer T/C0, T/C2 has the function of PWM, when T/C is operated under the quick PWM pattern WGM01:0=3, can be used to produce the PWM waveform of high frequency, charger built-in can use civil power or solar panel to charge.
The utility model also comprises PC control software, is used to handle data that tester is surveyed and control tester, sends steering order, and single-chip microcomputer enters the button interruption after receiving zone bit, carries out corresponding running program; Send the instruction that receives data, the vacuum tightness data that single-chip microcomputer is uploaded are handled, will be saved in the database writing time simultaneously.
PC control software comprises importing data message and two modules of tester control, wherein import the data message module and comprise communication interface routine and odbc database handling procedure, this software adopts the MSComm control of VC6.0 to write with " the open type data storehouse is connected ", the database of selecting for use is Microsoft Access, and the Anti-interference Design of this software adopts the mode of digital filtering and software watchdog.
The quadrature field that the air-cored cylindrical coil of the winding displacement formula that the utility model uses produces is better than the C type field coil that side leans against the arc-chutes sidewall, possess that volume is little, in light weight, magnetic field utilization factor height, the advantage that uniformity of magnetic field is good has improved the sensitivity of not dismantling the vacuum measurement of vacuum interrupter; Adopt switch power technology, improved the efficient that produces high-voltage electric field and magnetic field; Correspondence has the vacuum arc-extinguishing chamber contact structure of helical slot type, and whether the punch-through that produces when adding certain high pressure is judged vacuum interrupter and damaged; At the vacuum interrupter of various models, tester possesses cast to be selected and the clearance between open contacts selection function, has further improved the measuring accuracy of tester; Adopt piece-wise linearization to handle to the gas current in the data storer-curve of vacuum, thereby guarantee under different ions amount of current level, corresponding vacuum tightness value is more accurate.
Description of drawings
Fig. 1 circuit block diagram of the present utility model;
Fig. 2 the utility model lithium ion power supply circuit system block diagram;
Fig. 3 the utility model upper computer software operation interface synoptic diagram.
Embodiment
With reference to Fig. 1, the utility model comprises lithium-ion electric origin system 1, rectification circuit 2, DC/ DC circuit 3 and 4, current-limiting resistance 5, A/D converter 6, digital light is every 7, ATmega16 single-chip microcomputer 8, liquid crystal display 9, photoelectricity is isolated and driver 10, photoisolator 11, field coil 12, capacitor C 1, C2, sample resistance Re and thyristor VT1, its connected mode is: the 220VAC1 that the lithium-ion electric origin system comes out is connected to two DC/ DC circuit 3 and 4 input ends through being divided into two-way behind the rectification circuit 2, the positive pole of capacitor C 1 connects a certain binding post of DC/DC circuit 3 and field coil 12, the output terminal of thyristor VT1 connects the negative pole of capacitor C 1, the input end of VT1 connects another binding post of field coil 12, the controlled stage of VT1 connects photoelectricity and isolates and driver 10, the output terminal of DC/DC circuit 4 connects current-limiting resistance 5 and capacitor C 2, the high-voltage earthing end of another termination DC/DC circuit 4 of capacitor C 2, the other end of current-limiting resistance 5 is connected to the high pressure output of instrument, this high pressure output is connected on the conducting rod of measured arc-chutes, another conducting rod of measured arc-chutes is connected to the signal input part of instrument, this signal input part connects sample resistance Re and A/D, the high-voltage earthing end of another termination DC/DC circuit 4 of sample resistance Re, ATmega16 single-chip microcomputer 8 are isolated with photoelectricity and are connected with photoisolator 11 with driver 10.
With reference to Fig. 2, the lithium-ion electric origin system comprises: high frequency booster circuit 13, switching tube S1 and S2,24V lithium ion battery, transformer 14, full bridge rectifier 15, full bridge inverter 16.Its connected mode is: 24V lithium ion battery one terminates at the centre tap on the former limit of transformer 14, the other end is connected on the mid point of switching tube S1 and S2, high frequency booster circuit 13 connects switching tube S1, S2 and 24V lithium ion battery, the PWM ripple control S1 of the complementary symmetry of output two-way and S2 take turns conducting, form the alternating voltage of high frequency on the former limit of transformer 14, process transformer 14 boosts, full bridge rectifier 15, on capacitor C 3, obtain about 350V DC voltage, obtain the 220V alternating current by full bridge inverter 16 then.
With reference to Fig. 3, upper computer software comprises: tester control module 17, import data message module 18, settings/exit button 19, upwards button 20, to knob down 21, preservations/ACK button 22, measure date title 23, measure date data 24, cast title 25, cast data 26, vacuum tightness title 27, vacuum tightness data 28, serial ports selection title 29, serial ports 30, importing data button 31.Mode of operation is: when press setting/exit button 19, upwards button 20, in knob down 21, preservation/ACK button 22 any button, host computer sends the marker position to tester, tester receiving flag position enters respective interrupt, judges the laggard line operate of key assignments.When storing measurement result in the tester, the serial ports 30 that selection is enabled, press then and import data button 31, host computer sends the marker position to tester, estimates to send measurement date data 24, cast data 26, vacuum tightness data 28 to host computer after instrument is received zone bit.
Claims (5)
1. portable high-pressure vacuum switch vacuum degree tester is characterized in that comprising:
Field coil, field coil are a kind of air-cored cylindrical coils of winding displacement formula, are connected in series between each root lead, and the coil two ends join by the parallel port, and field coil is wrapped in the vacuum interrupter middle part, by electric capacity field coil is discharged;
TT﹠C system is used for the generation of gating pulse magnetic field and impulse electric field, and the measurement of gas current, conversion and demonstration;
The lithium-ion electric origin system is used to provide the sine wave alternating current of 220V/50Hz and the direct current of 24V.
2. portable high-pressure vacuum switch vacuum degree tester according to claim 1 is characterized in that: TT﹠C system comprises that rectification circuit, thyristor, DC/DC circuit, current-limiting resistance, A/D change-over circuit, digital light are every, ATmega16 single-chip microcomputer, photoelectricity isolation and driver, photoisolator, capacitor C 1, C2, sample resistance Re.By the ATmega16 Single-chip Controlling, give capacitor C 1 charging, voltage on the capacitor C 1 reaches predetermined value, ATmega16 Single-chip Controlling high voltage step-up, the secondary high voltage of stepup transformer outputs on the contact of arc-chutes, trigger thyristor VT1 conducting simultaneously, thereby make 1 pair of field coil discharge of capacitor C, when the magnetic field that field coil produces reaches a certain critical value, the interpolar of vacuum interrupter can produce gas current, gas current is through sample resistance Re, the AD sampling, digital light every after be input to the ATmega16 single-chip microcomputer, calculate through being stored in gas current in the data-carrier store-vacuum tightness fitting formula, the result is presented on the liquid crystal display.
3. portable high-pressure vacuum switch vacuum degree tester according to claim 1, it is characterized in that: the lithium-ion electric origin system comprises the 24V lithium ion battery, the high frequency booster circuit, transformer, full bridge rectifier and full bridge inverter, the sinewave output of lithium ion power supply output is through inversion, high frequency boosts, obtain after process full-bridge rectification and the full-bridge inverting again, the high frequency booster circuit adopts push-pull configuration, control chip is selected SG3525 for use, input voltage one terminates at the centre tap on the former limit of transformer, the other end is connected on the mid point of switching tube S1 and S2, the PWM ripple control S1 of the complementary symmetry of SG3525 output two-way and S2 take turns conducting, form the alternating voltage of high frequency on the former limit of transformer, boost through high-frequency transformer, rectification and filtering obtain about 350V DC voltage on capacitor C 3, pass through the full bridge inverter output AC voltage at last.Adopt the ATmega16 single-chip microcomputer, utilize the method for software to obtain required SPWM signal, the timer of ATMega16 single-chip microcomputer/timer T/C0, T/C2 has the function of PWM, when T/C is operated under the quick PWM pattern WGM01:0=3, can be used to produce the PWM waveform of high frequency, charger built-in can use civil power or solar panel to charge.
4. according to claim 1,2 or 3 described portable high-pressure vacuum switch vacuum degree testers, it is characterized in that: also comprise PC control software, be used to handle data that tester is surveyed and control tester, send steering order, single-chip microcomputer enters the button interruption after receiving zone bit, carries out corresponding running program; Send the instruction that receives data, the vacuum tightness data that single-chip microcomputer is uploaded are handled, will be saved in the database writing time simultaneously.
5. portable high-pressure vacuum switch vacuum degree tester according to claim 4, it is characterized in that: PC control software comprises importing data message and two modules of tester control, wherein import the data message module and comprise communication interface routine and odbc database handling procedure, this software adopts the MSComm control of VC6.0 to write with " the open type data storehouse is connected ", the database of selecting for use is Microsoft Access, and the Anti-interference Design of this software adopts the mode of digital filtering and software watchdog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201132363U CN201600222U (en) | 2010-02-06 | 2010-02-06 | Portable vacuum degree tester of high-voltage vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201132363U CN201600222U (en) | 2010-02-06 | 2010-02-06 | Portable vacuum degree tester of high-voltage vacuum switch |
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| Publication Number | Publication Date |
|---|---|
| CN201600222U true CN201600222U (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201132363U Expired - Lifetime CN201600222U (en) | 2010-02-06 | 2010-02-06 | Portable vacuum degree tester of high-voltage vacuum switch |
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| Country | Link |
|---|---|
| CN (1) | CN201600222U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628924A (en) * | 2012-04-24 | 2012-08-08 | 天津市电力公司 | Special controller for pole-mounted vacuum automatic power distribution switch mechanical property testing |
| CN110957178A (en) * | 2019-12-13 | 2020-04-03 | 四川新能电力有限公司 | Vacuum switch online detection method |
-
2010
- 2010-02-06 CN CN2010201132363U patent/CN201600222U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628924A (en) * | 2012-04-24 | 2012-08-08 | 天津市电力公司 | Special controller for pole-mounted vacuum automatic power distribution switch mechanical property testing |
| CN102628924B (en) * | 2012-04-24 | 2014-07-30 | 天津市电力公司 | Special controller for pole-mounted vacuum automatic power distribution switch mechanical property testing |
| CN110957178A (en) * | 2019-12-13 | 2020-04-03 | 四川新能电力有限公司 | Vacuum switch online detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADE Free format text: FORMER OWNER: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCE JILIN PROV. POWER SCIENCE INST. CO., LTD. Effective date: 20121101 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121101 Address after: 130021 Jilin City, Changchun province people's street, No. 4433 Patentee after: Electric Power Research Institute of Jilin Electric Power Company Patentee after: Institute of Electrical Engineering of the Chinese Academy of Sciences Patentee after: Jilin Academy of Electric Power Science Patentee after: State Grid Corporation of China Address before: 130021 Jilin City, Changchun province people's street, No. 4433 Patentee before: Electric Power Research Institute of Jilin Electric Power Company Patentee before: Institute of Electrical Engineering of the Chinese Academy of Sciences Patentee before: Jilin Academy of Electric Power Science |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
|
| CX01 | Expiry of patent term |