CN201035094Y - Insulation protection apparatus pressure test device - Google Patents
Insulation protection apparatus pressure test device Download PDFInfo
- Publication number
- CN201035094Y CN201035094Y CNU2007201009846U CN200720100984U CN201035094Y CN 201035094 Y CN201035094 Y CN 201035094Y CN U2007201009846 U CNU2007201009846 U CN U2007201009846U CN 200720100984 U CN200720100984 U CN 200720100984U CN 201035094 Y CN201035094 Y CN 201035094Y
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Abstract
The utility model relates to an insulation protective apparatus voltage withstanding test device, which belongs to test technique field and is used to solve the existing problems in the insulation protective apparatus voltage withstanding test work. The technical scheme is: the utility model consists of a high voltage test power and a group of voltage withstanding test units whose structures are completely identical, each voltage withstanding test unit is composed by an electric current signal acquisition circuit, a breakdown judgment circuit, an electromagnet driving circuit, and a breaking mechanism which are connected successively, the high voltage test power is a high voltage regulator. The utility model not only greatly improves the working efficiency of the insulation protective apparatus voltage withstanding test, but also effectively guarantees the accuracy of the measurement and the safety of the test workers.
Description
Technical field
The utility model relates to a kind of high efficiency, measures accurately, and the insulating protection utencil detector of handling safety, belongs to technical field of measurement and test.
Background technology
Insulating boot and insulating glove are power system operation and the indispensable safety protective tools of maintenance, test method and cycle that DL408 " electrical safe working order " has stipulated managing security tools and instruments commonly used such as insulating boot and insulating glove.Insulating boot and insulating glove withstand voltage test, the cycle is half a year, does not allow in the process of the test to puncture, leakage current is not more than 10 milliamperes simultaneously.
Each electric system all has a large amount of insulating boots, insulating glove need carry out withstand voltage test every year, and traditional test method generally is to detect with general power frequency withstand test equipment.In order to increase work efficiency, often many test products are tested together during actual the test, be about to many test products and be attempted by test simultaneously with on the power frequency high-tension electricity, whether the test test product under high pressure exists electric leakage, punch-through.The weak point of this detection method is when indivedual test products puncture, the operator is difficult to distinguish the test product of puncture in the range estimation mode, in order to discern the test product of puncture, the operator must carry out withstand voltage test again one by one, so just make operation become very loaded down with trivial details, workload doubles, thereby greatly reduces the work efficiency of test.
At present, the method of measuring test product leakage currents such as insulating boot, insulating glove generally is to be connected in series milliammeter on hi-line, but because milliammeter can not bear breakdown current, therefore measuring leakage current can only be after withstand voltage test is finished, insert the milliammeter measurement of boosting again again, work efficiency is reduced.In addition, have 2.5 ten thousand volts of high pressure owing to measure the gauge outfit of test product leakage current, operating personnel's meter reading is abnormally dangerous, thereby readability standard not.Though occurred insulating boot, insulating glove special purpose test equipment in nearly 2 years, this equipment only provides mechanical parts such as the pond, insulating glove support of convenience test, to the measurement of leakage current and puncture aspect such as differentiation and do not take any innovative approach.Therefore, it is very necessary improving existing withstand voltage test equipment performance.
Summary of the invention
The purpose of this utility model is to provide a kind of efficient work, measures accurately, and the insulating protection utensil Withstand test device of the automatic disjunction of handling safety.
The alleged problem of the utility model realizes with following technical proposals:
A kind of insulating protection utensil Withstand test device, form by high-potting power supply and one group of (for example ten) identical in structure withstand voltage test unit, each withstand voltage test unit is by the current signal Acquisition Circuit that connects successively, puncture decision circuitry, solenoid driver circuit and disjunction mechanism form, described current signal Acquisition Circuit is by voltage dependent resistor (VDR) YM, sampling resistor R1, repeating resistance R2, operational amplifier F1, diode D and capacitor C are formed, sampling resistor R1 is through disjunction mechanism and the high-voltage output end that connects high-voltage regulator after a test product is connected, voltage dependent resistor (VDR) YM is parallel on the sampling resistor R1, the output signal at sampling resistor R1 two ends connects the in-phase input end of operational amplifier F1 through repeating resistance R2, operational amplifier F1 and diode D are connected into precise rectification circuit, capacitor C is a filter capacitor, and the output terminal of precise rectification circuit is returned and worn decision circuitry; Described puncture decision circuitry is made of operational amplifier F2, operational amplifier F2 is connected into comparer, its in-phase input end connects the output terminal of the precise rectification circuit of being made up of operational amplifier F1 and diode D, and inverting input connects a reference voltage Vref, output termination solenoid driver circuit; Described solenoid driver circuit is made up of resistance R 3 and triode Q, and triode Q is connected into common-emitter amplifier, and its base stage connects the output terminal of operational amplifier F2 through biasing resistor R3, and the magnet spool DT of disjunction mechanism is its collector load; Described high-potting power supply is a high-voltage regulator.
Above-mentioned insulating protection utensil Withstand test device, described disjunction mechanism is made of high-voltage terminal 8 and the electromagnet 2 that an end has link 6 or hook, described electromagnet 2 levels are installed, the link 6 of described high-voltage terminal 8 or be hung on armature 7 one ends of electromagnet 2, and connect the test high voltage, another termination test product of high-voltage terminal 8 by armature 7.
Above-mentioned insulating protection utensil Withstand test device, described disjunction mechanism is made up of rocking arm 9, rocking arm torsionspring 10 and electromagnet 2, described rocking arm 9 one ends and Withstand test device shell 1 are rotationally connected, described rocking arm torsionspring 10 1 ends are fixedlyed connected with Withstand test device shell 1, the other end is connected with rocking arm 9, locator card platform with armature 7 one ends of electromagnet 2 coupling is arranged on the described rocking arm 9, and described rocking arm 9 connects the test high-tension electricity, its free termination test product.
Above-mentioned insulating protection utensil Withstand test device, set up a display circuit, described display circuit is divided into information-processing circuit and main frame two parts, communicate by infrared signal between them, described information-processing circuit is by A/D converter U1, CPU1, the first infrared transmitter FS1 and the first infrared remote receiver JS1 form, input end AIN0～AIN9 of A/D converter U1 connects the output terminal of ten precise rectification circuits of being made up of operational amplifier F1 and diode D respectively, its DATA0, DATA1, SCLK, CS, the EOC end connects P1.2～P1.6 end of CPU1 respectively, the signal input part of the first infrared transmitter FS1 connects the P1.7 end of CPU1, the P1.0 end of the output termination CPU1 of the first infrared remote receiver JS1; Described main frame is by CPU2, the second infrared transmitter FS2 corresponding with the first infrared remote receiver JS1, form with the corresponding second infrared remote receiver JS2 and the LCD YJ of the first infrared transmitter FS1, and the second infrared transmitter FS2, the second infrared remote receiver JS2 and LCD YJ all are connected with CPU2.
The utility model utilizes the current signal Acquisition Circuit to gather the test product leakage current signal, this signal is delivered to simultaneously punctures decision circuitry and display circuit, when certain test product leakage current surpasses certain value, puncture decision circuitry output breaking signal, breaking signal is after solenoid driver circuit amplifies, be added on the electromagnet that drives disjunction mechanism, the electromagnet action, making disjunction mechanism change off-state into by on-state (falls the high-voltage terminal of topworks, perhaps rocking arm rotation), test product and high pressure are disconnected, and the withstand voltage test of all the other test products is proceeded.That is to say that a plurality of withstand voltage tests unit can independently be tested simultaneously, the test product of a certain test cell does not influence the detection of other test unit when puncturing.Display circuit converts the test product leakage current signal to digital signal, and by being presented on the display after the infrared isolation, the accuracy of measurement and security all is improved.The utility model has not only improved the work efficiency of insulating protection utensil withstand voltage test greatly, and has effectively ensured the accuracy of measurement and the security of testing crew.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an electric theory diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of withstand voltage test unit and information processing part;
Fig. 3 is the schematic diagram of high-voltage terminal drop type disjunction mechanism;
Fig. 4 is the schematic diagram of the rotary disjunction of rocking arm mechanism;
Fig. 5 is the rotary disjunction of a rocking arm mechanism disjunction view.
To in each label be: 1, the Withstand test device shell, 2, electromagnet, 3, hi-line, 4, wiring board, 5, the insulation cushion rubber, 6, link, 7, armature, 8, high-voltage terminal, 9; rocking arm; 10; rocking arm torsionspring, 11; test product (insulating boot), 12; soak the salt solution sponge; 13; pallet; 14; ground wire, 15; test product conductor, FDK; section breaker; YM; voltage dependent resistor (VDR); F1; F2; operational amplifier, DT; magnet coil, FS1; FS2; infrared transmitter; JS1; JS2; infrared remote receiver; Vref; reference voltage, U1; A/D converter, C-0～C-9; withstand voltage test unit.
Embodiment
The utility model solves three problems emphatically: 1. Shi Yan security, 2. Gong Zuo high efficiency, the 3. accuracy of Ce Lianging.
In order to increase work efficiency, the utility model is provided with and punctures disjunction mechanism, when many insulating boots are tested simultaneously, every insulating boot all is connected to one and punctures disjunction mechanism, when arbitrary insulating boot punctures, it punctures the disjunction of disjunction mechanism, breaks away from high pressure, and other test products continue test, and timing time is finished to test.
In order to improve experimental safe; the utility model adopts the digital measurement mode to measure leakage current; current sample has overcurrent protection; the high-tension measurement data are sent to the main frame of display circuit by infrared ray; demonstrate the leakage current of each test product again by big screen LCD, guarantee the safety of testing crew.
The utility model adopts digitized measurement, transmission, demonstration, preservation, is easy to the precision that reaches higher.
Among Fig. 2, the model of U1 is TLC2543; The model of CPU1 is 89C2051; C-0～C-9 is ten withstand voltage test unit; Disjunction mechanism can be switched on or switched off high tension loop, thereby can be regarded as a section breaker FDK, and this switch series is coupled in the high tension loop of withstand voltage test.
Among Fig. 2, test high pressure (25000V) is received on the test product 11 by 10 sample resistance R1 and 10 disjunction mechanisms (section breaker FDK) respectively.Sampled signal on the sample resistance R1 is delivered to the precise rectification circuit rectification of being made up of operational amplifier F1, AC signal is become direct current signal, this signal one tunnel is sent to multi-channel a/d converter U1, the voltage comparator that one tunnel input is made of operational amplifier F2 carries out voltage ratio, when voltage surpasses by reference voltage Vref, comparer inversion driving triode Q conducting, electromagnet 2 adhesives, high pressure disjunction.Voltage dependent resistor (VDR) YM is in parallel with sample resistance R1, and when test product punctured, electric current increased suddenly, and the voltage on the sample resistance R1 increases, and when voltage arrived the voltage breakdown of voltage dependent resistor (VDR) YM, voltage dependent resistor (VDR) punctured the increase that has limited voltage, plays the effect of overcurrent protection.Another road is input to multi-channel a/d converter, and analog quantity is converted to digital quantity, and reading into the microprocessor CPU1 handles the back as calculated and is sent to main frame by the first infrared transmitter FS1, shows, analyzing and processing and preservation.The 38KHz modulation system is adopted in the infrared data transmission, can filtering interfering, guarantee reliability of data transmission.
The function of disjunction mechanism is when test product punctures, and hi-line and test product are disconnected, and concrete structure has two kinds:
Fig. 3 is the schematic diagram that the high-voltage terminal drop type punctures disjunction mechanism, in Fig. 3, electromagnet 2 levels are installed on the Withstand test device shell 1, high-voltage terminal 8 is suspended on the armature 7 of electromagnet 2, its lower end is connected with test product (insulating boot), hi-line 3 is connected with armature 7, and the test high pressure is added to test product (insulating boot) inside through armature 7, link 6, high-voltage terminal 8, and test product (insulating boot) is outside through soaking salt solution sponge 12, pallet 13, ground wire 14 ground connection.When test product (insulating boot) punctured, driving circuit made electromagnet 2 adhesives, and hi-line falls, and with test product and high pressure disjunction, finished puncture disjunction function.Form section breaker FDK between high-voltage terminal 8 and the armature 7.
Fig. 4 is the schematic diagram of the rotary puncture disjunction of rocking arm mechanism, in Fig. 4; rocking arm 9 rotation that can make progress under the effect of rocking arm torsionspring 10; be parked in horizontal level, during test, by external force it is rotated down earlier; compression rocking arm torsionspring 10; free end until rocking arm 9 is connected with test product conductor 15, the while is blocked the locator card platform of rocking arm 9 by the armature 7 of electromagnet 2, and rocking arm 9 is located.At this moment, the test high pressure is added to test product (insulating boot) inside through rocking arm 9, test product conductor 15, and test product (insulating boot) is outside through soaking salt solution sponge 12, pallet 13, ground wire 14 ground connection.When test product punctured, driving circuit made electromagnet 2 adhesives, and armature 7 discharges rocking arm 9, and rocking arm 9 rotates up around stiff end under the effect of rocking arm torsionspring 11, and its free end separates with test product, thereby with test product and high pressure disjunction, finished puncture disjunction function.Fig. 3 is the rotary puncture disjunction of a rocking arm mechanism disjunction state.Form section breaker FDK between rocking arm 9 and the test product conductor 15.
Among Fig. 5, rocking arm torsionspring 10 is a torsionspring, when specifically implementing, also can be the spring of other form, as extension spring or compression spring, as long as it is just passable that rocking arm 9 is rotated.
Claims (4)
1. insulating protection utensil Withstand test device, it is characterized in that, it is made up of high-potting power supply and one group of identical in structure withstand voltage test unit, each withstand voltage test unit is by the current signal Acquisition Circuit that connects successively, puncture decision circuitry, solenoid driver circuit and disjunction mechanism form, described current signal Acquisition Circuit is by voltage dependent resistor (VDR) (YM), sampling resistor (R1), repeating resistance (R2), operational amplifier (F1), diode (D) and electric capacity (C) are formed, sampling resistor (R1) is through disjunction mechanism and the high-voltage output end that connects high-voltage regulator after a test product is connected, voltage dependent resistor (VDR) (YM) is parallel on the sampling resistor (R1), the output signal at sampling resistor (R1) two ends connects the in-phase input end of operational amplifier (F1) through repeating resistance (R2), operational amplifier (F1) is connected into precise rectification circuit with diode (D), electric capacity (C) is filter capacitor, and the output terminal of precise rectification circuit is returned and worn decision circuitry; Described puncture decision circuitry is made of operational amplifier (F2), operational amplifier (F2) is connected into comparer, its in-phase input end connects the output terminal of the precise rectification circuit of being made up of operational amplifier (F1) and diode (D), inverting input connects a reference voltage Vref, output termination solenoid driver circuit; Described solenoid driver circuit is made up of resistance (R3) and triode (Q), triode (Q) is connected into common-emitter amplifier, its base stage connects the output terminal of operational amplifier (F2) through biasing resistor (R3), and disjunction mechanism magnet spool (DT) is its collector load; Described high-potting power supply is a high-voltage regulator.
2. according to the described insulating protection utensil of claim 1 Withstand test device, it is characterized in that, described disjunction mechanism is had the high-voltage terminal (8) and electromagnet (2) formation of link (6) or hook by an end, described electromagnet (2) level is installed, the link (6) of described high-voltage terminal (8) or be hung on armature (7) one ends of electromagnet (2), and connect the test high voltage, another termination test product of high-voltage terminal (8) by armature (7).
3. according to the described insulating protection utensil of claim 1 Withstand test device, it is characterized in that, described disjunction mechanism is made up of rocking arm (9), rocking arm torsionspring (10) and electromagnet (2), described rocking arm (9) one ends and Withstand test device shell (1) are rotationally connected, described rocking arm torsionspring (10) one ends are fixedlyed connected with Withstand test device shell (1), the other end is connected with rocking arm (9), locator card platform with armature (7) one ends of electromagnet (2) coupling is arranged on the described rocking arm (9), described rocking arm (9) connects the test high-tension electricity, its free termination test product.
4. according to claim 2 or 3 described insulating protection utensil Withstand test devices, it is characterized in that, set up a display circuit, described display circuit is divided into information-processing circuit and main frame two parts, communicate by infrared signal between them, described information-processing circuit is by A/D converter (U1), CPU1, first infrared transmitter (FS1) and first infrared remote receiver (JS1) are formed, input end AIN0～the AIN9 of A/D converter (U1) connects the output terminal of ten precise rectification circuits of being made up of operational amplifier (F1) and diode (D) respectively, its DATA0, DATA1, SCLK, CS, the EOC end connects P1.2～P1.6 end of CPU1 respectively, the signal input part of first infrared transmitter (FS1) connects the P1.7 end of CPU1, the P1.0 end of the output termination CPU1 of first infrared remote receiver (JS1); Described main frame is by CPU2, second infrared transmitter (FS2) corresponding with first infrared remote receiver (JS1), form with corresponding second infrared remote receiver (JS2) and the LCD (YJ) of first infrared transmitter (FS1), and second infrared transmitter (FS2), second infrared remote receiver (JS2) and LCD (YJ) all are connected with CPU2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201009846U CN201035094Y (en) | 2007-04-10 | 2007-04-10 | Insulation protection apparatus pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201009846U CN201035094Y (en) | 2007-04-10 | 2007-04-10 | Insulation protection apparatus pressure test device |
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| Publication Number | Publication Date |
|---|---|
| CN201035094Y true CN201035094Y (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201009846U Expired - Fee Related CN201035094Y (en) | 2007-04-10 | 2007-04-10 | Insulation protection apparatus pressure test device |
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| CN (1) | CN201035094Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852837A (en) * | 2010-05-28 | 2010-10-06 | 中国北车集团大连机车研究所有限公司 | Dielectric voltage-withstand test bench of engine electronic control unit |
| CN101900782A (en) * | 2010-07-01 | 2010-12-01 | 思源电气股份有限公司 | Testing system of gas insulated combined electric appliance equipment |
| CN102495339A (en) * | 2011-12-04 | 2012-06-13 | 甘肃省电力公司武威供电公司 | Power-frequency withstand voltage test method and test device for 10kV live-wire work insulation protection appliance |
| CN105548845A (en) * | 2016-01-27 | 2016-05-04 | 国网山东省电力公司青岛供电公司 | Device and method for detection of insulation tool |
| CN107976578A (en) * | 2017-12-11 | 2018-05-01 | 深圳市三慧智国际智能系统有限公司 | A kind of sheet resistance test platform |
| CN113740675A (en) * | 2021-07-26 | 2021-12-03 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Insulating boot withstand voltage test system |
-
2007
- 2007-04-10 CN CNU2007201009846U patent/CN201035094Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852837A (en) * | 2010-05-28 | 2010-10-06 | 中国北车集团大连机车研究所有限公司 | Dielectric voltage-withstand test bench of engine electronic control unit |
| CN101900782A (en) * | 2010-07-01 | 2010-12-01 | 思源电气股份有限公司 | Testing system of gas insulated combined electric appliance equipment |
| CN102495339A (en) * | 2011-12-04 | 2012-06-13 | 甘肃省电力公司武威供电公司 | Power-frequency withstand voltage test method and test device for 10kV live-wire work insulation protection appliance |
| CN105548845A (en) * | 2016-01-27 | 2016-05-04 | 国网山东省电力公司青岛供电公司 | Device and method for detection of insulation tool |
| CN107976578A (en) * | 2017-12-11 | 2018-05-01 | 深圳市三慧智国际智能系统有限公司 | A kind of sheet resistance test platform |
| CN113740675A (en) * | 2021-07-26 | 2021-12-03 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Insulating boot withstand voltage test system |
| CN113740675B (en) * | 2021-07-26 | 2023-09-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Withstand voltage test system for insulating boot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20140410 |