CN201464633U - Portable test instrument for high-voltage electroscope - Google Patents
Portable test instrument for high-voltage electroscope Download PDFInfo
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- CN201464633U CN201464633U CN2009201039696U CN200920103969U CN201464633U CN 201464633 U CN201464633 U CN 201464633U CN 2009201039696 U CN2009201039696 U CN 2009201039696U CN 200920103969 U CN200920103969 U CN 200920103969U CN 201464633 U CN201464633 U CN 201464633U
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Abstract
The utility model discloses a portable test instrument for a high-voltage electroscope. The circuit of the portable test instrument comprises a low-voltage DC power source, a sine-wave module, a booster transformer, an MCU control circuit, a function switch device and a display circuit; the circuit is fixed in a portable box body; and the input and output interfaces of the circuit are arranged on a control panel of in the box body. The test instrument outputs stable 50Hz sine-wave voltage signals, is free from the interference of network voltage fluctuation, can accurately adjust to a need voltage value and accurately display the start and return voltages and frequencies of a tested electroscope, has the advantages of small size, light weight, portability, dust prevention and anti-creeping, and is suitable for various sites, in particular field operation site to carry out quality detection to the high-voltage electroscope.
Description
Technical field
Whether effectively the utility model relates to a kind of high pressure generator, particularly be applicable to detect electroscopic device portable high-pressure electroscope tester.
Background technology
Regulation according to State Grid Corporation of China's " electric power safety working specification ", high voltage electroscope must or have on the equipment of corresponding conditions at the circuit that electricity is arranged before use to be tested, confirm to carry out again the electrical verification of high-tension line is detected after the high voltage electroscope work well, thus the safety of the assurance person, equipment and detecting instrument.In the time can't testing on electric equipment is arranged under the situations such as chance power failure, available high pressure generator, electroscope tester etc. carries out verification.
Tester in the market, high pressure generator all are to boost after utilizing the direct current concussion, produce a kind of high-voltage pulse, in order to detect galvanoscopic performance." electroscope high pressure generator " (patent No. ZL2006200690934) just belongs to this series products as Chinese utility model patent, its circuit part comprises the inversion circuit that is used for inversion and frequency conversion that a low-voltage dc power supply, input end be connected with low-voltage dc power supply, the transformer that input end is connected with the output terminal of described inversion circuit, a high-voltage output end of transformer is connected with electrode, and another output terminal of transformer output winding is connected with the inner conductor of generator inside.There are following several disadvantages in this series products:
1. detection signal and civil power 50HZ power frequency sine wave voltage exist difference, can not simulate the frequency and the waveform of electrical network virtual voltage well; Its accuracy is relatively poor, and influence detects the correctness of conclusion.
2. when using, output terminal produces high pressure, and pilot lamp should be shinny, and high voltage electroscope is touched high-voltage output end, when high voltage electroscope sends alerting signal, represents that this electroscope is normal; Otherwise high voltage electroscope is defective.To those underproof electroscopes, can not show its concrete magnitude of voltage, more can't guarantee galvanoscopic accuracy of detection.
3. monnolithic case is the box-like of heaviness, and no aesthetic feeling can say that inconvenience is carried, and can not guarantee good insulation.
The utility model content
The technical problems to be solved in the utility model provides a kind of display circuit portable high-pressure electroscope tester that has, and can show by side electroscope voltage/frequency value.Its output signal is a standard 50HZ power frequency sine wave voltage signal, accurately reflects the electroscope performance, guarantees accuracy of detection.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of portable high-pressure electroscope tester, its circuit part comprises the sine wave module that a low-voltage dc power supply, input end are electrically connected with low-voltage dc power supply, input end and the step-up transformer that the sine wave module output terminal is electrically connected is characterized in that: it also comprises the MCU control circuit, has the function change-over device of switch key, display circuit;
Wherein the SPWM modulation signal output terminal of MCU control circuit links to each other with sine wave module; The voltage of MCU control circuit, frequency output terminal link to each other with function change-over device;
Described display circuit provides information-driven by the MCU control circuit, through function change-over device, carries out voltage/frequency by the display of display circuit and shows.
As qualification of the present utility model, described sine wave module includes and is used for low-voltage direct input is transformed into the inversion circuit that is used for inversion and frequency conversion that the output terminal in the loop of boosting, the input end of high voltage direct current output and the loop of boosting is electrically connected, the output filter circuit that input end is electrically connected with the inversion circuit output terminal.
As another kind of qualification the of the present utility model, described function change-over device is for being used for the frequency/voltage device for switching, and its output signal is frequency signal or voltage signal.
As the optimization of above-mentioned portable high-pressure electroscope tester, the one-piece construction of this tester is a portable casing.
As further optimization of the present utility model, described casing is divided into case lid and the block two parts that are complementary;
Case lid and block upper and lower settings are also hinged through hinge in a side joint; The corresponding position of block and case lid is provided with the snap close that is used for the two fastening;
Be provided with iris type tester control panel in the block, circuit part is fixedly set in the cavity volume between block bottom and panel;
The output terminal of step-up transformer has high-voltage output end and high-voltage output electrode, its boost with buck functionality by boosting and the step-down button control;
Described display, high-voltage output end, high-voltage output electrode, boost voltage/frequency switch key, power switch with step-down button, function change-over device, and earthing rod all is arranged on the control panel.
As further optimizing, also be provided with the charging socket and the charging indicator light that are used for low-voltage dc power supply on the described panel.
The portable high-pressure electroscope tester of said structure provided by the utility model, owing to be provided with display circuit, can observe the required voltage that applies when detecting electroscope intuitively, thereby guarantee galvanoscopic precision, also can further show the frequency of the voltage that applies; Because having adopted sine wave module, the voltage signal of its output is the 50Hz sine wave, can better simulate the voltage of actual electric network and the waveform of frequency; The MCU control circuit can be controlled the duty of each several part effectively as core of the present utility model; Function change-over device can switch between voltage and frequency easily, to export needed numerical value; Display circuit is by the display numerical value of observation post output easily; Its low-voltage dc power supply adopts rechargeable type, need not frequently change battery, can guarantee effectively that the convenient of tester uses.
Further, monnolithic case of the present utility model has adopted portable body structure, its block inside can hold, the closed test circuit, and the lead-out terminal of test circuit reasonably is arranged on the control panel, control panel has been isolated test circuit effectively, auto-reset function when also being provided with shutdown has guaranteed the electronegative potential of lead-out terminal when start, thereby has guaranteed personal safety.The output of tester is stable, is not subjected to the interference of voltage ripple of power network, can accurately be adjusted to the required voltage value, can guarantee the safety of equipment and electroscope test product; And volume is little in light weight.
To sum up, the compared with prior art obtained technical progress of the utility model is: export stable 50Hz sine voltage signal, be not subjected to the interference of voltage ripple of power network, can accurately be adjusted to the required voltage value, and can accurately show tested galvanoscopic startup and return voltage and frequency values, and have and volume is little, in light weight, be convenient to that band is taken, dustproof anti-creeping characteristics, be applicable to various scenes, particularly the field work scene realizes high voltage electroscope is carried out quality testing
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Description of drawings
Fig. 1 is the user mode external structure synoptic diagram of the utility model embodiment;
Fig. 2 is the electric functional-block diagram of the utility model embodiment;
Fig. 3 is the main loop circuit figure that boosts among Fig. 2;
Be inversion main loop circuit figure among Fig. 4 Fig. 2;
Fig. 5 is an output filter circuit circuit diagram among Fig. 2.
Among the figure: 1--cabinet base, 2--case lid, 3--snap close, the 4--documents pouch, 5--hinge, 6--control panel, the 7--handle, 60--power switch, 61--boost button, 62--step-down button, 63--voltage/frequency switch key, 64--display, 65--high-voltage output end, 66--high-voltage output electrode, 67--charging indicator light, 68 1 charging sockets, the 69--earthing rod.
Embodiment
Embodiment
Figure 1 shows that a kind of portable high-pressure electroscope tester, the one-piece construction of this tester is a portable casing.
Casing is divided into case lid 2 and block 1 two parts that are complementary;
Be provided with horizontal baffle in the block 1, as tester control panel 6, the circuit part of tester is fixedly set in the cavity volume of 6 of block 1 bottom and panels.
With reference to figure 2, the circuit part of tester comprises the sine wave module that a low-voltage dc power supply, input end are electrically connected with low-voltage dc power supply, the step-up transformer that input end is electrically connected with the sine wave module output terminal, it also comprises the MCU control circuit, has the function change-over device of switch key, display circuit.
Wherein the SPWM modulation signal output terminal of MCU control circuit links to each other with sine wave module; The voltage of MCU control circuit, frequency output terminal link to each other with function change-over device;
Described display circuit provides information-driven by the MCU control circuit, through function change-over device, carries out voltage/frequency by the display of display circuit and shows.
Described sine wave module includes and is used for low-voltage direct input is transformed into the inversion circuit that is used for inversion and frequency conversion that the output terminal in the loop of boosting, the input end of high voltage direct current output and the loop of boosting is electrically connected, the output filter circuit that input end is electrically connected with the inversion circuit output terminal.
Described function change-over device is for being used for the frequency/voltage device for switching, and its output signal is frequency signal or voltage signal.
The output terminal of step-up transformer has high-voltage output end 65 and high-voltage output electrode 66, and it boosts and buck functionality is controlled by boost button 61 and step-down button 62;
Described display 64, high-voltage output end 65, high-voltage output electrode 66, boost button 61 and step-down button 62, the voltage/frequency switch key 63 of function change-over device, power switch 60, and earthing rod 69 all is arranged on the control panel 6.
Also be provided with the charging socket 68 and the charging indicator light 67 that are used for low-voltage dc power supply on the panel 6.
No matter documents pouch 4 is in empty state or filled state, and its underpart limit is higher than the arbitrary element apical margin on the panel 6, in any case promptly, documents pouch 4 must not touch element on the panel 6 and cause that mistake opens, malfunction.
With reference to figure 3, with chip SG3525 is the loop of boosting of core, comprise resistance R 48, R49, R51, R52, R68, diode D9, D11, D14, D15, electrochemical capacitor E11, field effect transistor Q7, Q9, coil T2A, T2B, T2E, and capacitor C 23. wherein diode D9, D11, D14 and D15 form full bridge rectifier. the input end of chip SG3525 frequency of operation is connected the output terminal of the oscillation circuit that is made of resistance, electric capacity; The grid of field effect transistor Q7, Q9 connects output terminal OUTA, the OUTB of chip, and source electrode connects the low pressure winding terminal of transformer T2; The voltage signal of transformer T2 output passes through E11 output smoothing high voltage direct current again through output high-pressure pulsating direct current behind the full bridge rectifier.
With reference to figure 4, inversion circuit comprises resistance R 38--R42, R59-R62, voltage stabilizing diode ZD2-ZD5, field effect transistor Q11-Q14.Wherein field effect transistor Q11, Q12, Q13, Q14 form full bridge inverter, control the duty of each brachium pontis by the SPWM modulation signal of MCU control circuit, the SPWM voltage of inverter circuit output alternation.
With reference to figure 5, the output filter circuit is by coil L1, L2, L3A, L3B, and the two joint LC filtering circuit series connection that capacitor C 24, C25 form constitute, and improve the power factor and the reliability of output voltage signal.
The method of operating of this portable high-pressure electroscope tester: turn on the power switch 60, after waiting for for 3～5 seconds, display 64 numeral occurs and shows, insulating bar with high voltage electroscope draws back then, the electrode tip of the part of again electroscope being reported to the police is inserted in high-voltage output electrode 66 jacks at high-voltage output end 65 middle parts, push the boost button 61 on the control panel 6, send chimes of doom until electroscope, stop to push boost button 61, this moment, the numeral of display 64 demonstrations was this galvanoscopic trigger voltage value; Behind the record data, can push step-down button 62 and carry out step-down, when the electroscope chimes of doom disappeared, the numeral that shows on the display 64 was galvanoscopic return voltage value this moment; Thereby can contrast galvanoscopic acceptance criteria and determine whether electroscope is qualified.When needing recording frequency, can push voltage/frequency switch key 63, can show that electroscope starts or the frequency values when returning.
Low-voltage dc power supply of the present utility model is designed to rechargeable type, when needing charging, Charger (portable round) is inserted charging socket 68, and charger is connected the 220V power supply, and pilot lamp 67 is bright during charging.
When not using, in the documents pouches 4 of packing into such as each p-wire and charger, closed case lid 2 by snap close 3 fastening cabinet bases 1 and case lid 2, can conveniently be guided and supported.
Claims (6)
1. portable high-pressure electroscope tester, its circuit part comprises the sine wave module that a low-voltage dc power supply, input end are electrically connected with low-voltage dc power supply, input end and the step-up transformer that the sine wave module output terminal is electrically connected is characterized in that: it also comprises the MCU control circuit, has the function change-over device of switch key, display circuit;
Wherein the SPWM modulation signal output terminal of MCU control circuit links to each other with sine wave module; The voltage of MCU control circuit, frequency output terminal link to each other with function change-over device;
Described display circuit provides information-driven by the MCU control circuit, through function change-over device, carries out voltage/frequency by the display of display circuit and shows.
2. portable high-pressure electroscope tester according to claim 1 is characterized in that: described sine wave module includes and is used for low-voltage direct input is transformed into the inversion circuit that is used for inversion and frequency conversion that the output terminal in the loop of boosting, the input end of high voltage direct current output and the loop of boosting is electrically connected, the output filter circuit that input end is electrically connected with the inversion circuit output terminal.
3. portable high-pressure electroscope tester according to claim 1 is characterized in that: described function change-over device is for being used for the frequency/voltage device for switching, and its output signal is frequency signal or voltage signal.
4. according to each described portable high-pressure electroscope tester among the claim 1-3, it is characterized in that: the one-piece construction of this tester is a portable casing.
5. portable high-pressure electroscope tester according to claim 4 is characterized in that: described casing is divided into case lid and the block two parts that are complementary;
Case lid and block upper and lower settings are also hinged through hinge in a side joint; The corresponding position of block and case lid is provided with the snap close that is used for the two fastening;
Be provided with iris type tester control panel in the block, circuit part is fixedly set in the cavity volume between block bottom and panel;
The output terminal of step-up transformer has high-voltage output end and high-voltage output electrode, its boost with buck functionality by boosting and the step-down button control;
Described display, high-voltage output end, high-voltage output electrode, boost voltage/frequency switch key, power switch with step-down button, function change-over device, and earthing rod all is arranged on the control panel.
6. portable high-pressure electroscope tester according to claim 5 is characterized in that: also be provided with the charging socket and the charging indicator light that are used for low-voltage dc power supply on the described panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201039696U CN201464633U (en) | 2009-07-31 | 2009-07-31 | Portable test instrument for high-voltage electroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201039696U CN201464633U (en) | 2009-07-31 | 2009-07-31 | Portable test instrument for high-voltage electroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464633U true CN201464633U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201039696U Expired - Fee Related CN201464633U (en) | 2009-07-31 | 2009-07-31 | Portable test instrument for high-voltage electroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464633U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980028A (en) * | 2010-10-28 | 2011-02-23 | 宁夏电力公司石嘴山供电局 | Micro voltage generator for detecting working condition of electroscope |
| CN102032128A (en) * | 2010-11-29 | 2011-04-27 | 江苏省电力公司徐州供电公司 | Detector for hand-operated high-voltage electroscope |
| CN106483431A (en) * | 2016-08-31 | 2017-03-08 | 济南朗宁电力科技有限公司 | A kind of DL high-potting dedicated operations case |
| CN108363028A (en) * | 2018-04-03 | 2018-08-03 | 五邑大学 | A kind of control system and its control method of high voltage electroscope batch detecting device |
| CN109142818A (en) * | 2018-07-18 | 2019-01-04 | 四川省腾达电力器材制造有限公司 | A kind of new type line frequency high pressure generator |
| CN110673078A (en) * | 2019-10-21 | 2020-01-10 | 国网辽宁省电力有限公司抚顺供电公司 | High-voltage electricity-testing signal generator calibrator |
| CN116559521A (en) * | 2023-05-10 | 2023-08-08 | 国网黑龙江省电力有限公司绥化供电公司 | Chamber test device of portable high-voltage electroscope |
-
2009
- 2009-07-31 CN CN2009201039696U patent/CN201464633U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980028A (en) * | 2010-10-28 | 2011-02-23 | 宁夏电力公司石嘴山供电局 | Micro voltage generator for detecting working condition of electroscope |
| CN102032128A (en) * | 2010-11-29 | 2011-04-27 | 江苏省电力公司徐州供电公司 | Detector for hand-operated high-voltage electroscope |
| CN106483431A (en) * | 2016-08-31 | 2017-03-08 | 济南朗宁电力科技有限公司 | A kind of DL high-potting dedicated operations case |
| CN108363028A (en) * | 2018-04-03 | 2018-08-03 | 五邑大学 | A kind of control system and its control method of high voltage electroscope batch detecting device |
| CN109142818A (en) * | 2018-07-18 | 2019-01-04 | 四川省腾达电力器材制造有限公司 | A kind of new type line frequency high pressure generator |
| CN110673078A (en) * | 2019-10-21 | 2020-01-10 | 国网辽宁省电力有限公司抚顺供电公司 | High-voltage electricity-testing signal generator calibrator |
| CN116559521A (en) * | 2023-05-10 | 2023-08-08 | 国网黑龙江省电力有限公司绥化供电公司 | Chamber test device of portable high-voltage electroscope |
| CN116559521B (en) * | 2023-05-10 | 2024-03-29 | 国网黑龙江省电力有限公司绥化供电公司 | Chamber test device of portable high-voltage electroscope |
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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: 20100512 Termination date: 20120731 |