CN104360135A - Live line voltage measurement device - Google Patents
Live line voltage measurement device Download PDFInfo
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- CN104360135A CN104360135A CN201410648650.7A CN201410648650A CN104360135A CN 104360135 A CN104360135 A CN 104360135A CN 201410648650 A CN201410648650 A CN 201410648650A CN 104360135 A CN104360135 A CN 104360135A
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- measurement device
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- voltage
- line measurement
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Abstract
A live line voltage measurement device is used for carrying out live line measurement on the voltage of a contact resistor of a high-voltage circuit so as to calculate resistance values. The live line voltage measurement device comprises a closed insulating shell, a voltage measurement device, a first shielding sleeve and a second shielding sleeve, wherein the voltage measurement device is arranged in the shell, and the first shielding sleeve and the second shielding sleeve are arranged on the shell in a sleeving mode. The voltage measurement device is provided with a first testing line and a second testing line, wherein the first testing line and the second testing line extend out of the shell. The peripheral surface of the second testing line, the peripheral surface of the voltage measurement device and the peripheral surface of the part, located in the shell, of the first testing line are wrapped in a third shielding sleeve. The first shielding sleeve and the second shielding sleeve are correspondingly and electrically connected with the first testing line and the third shielding sleeve. The first shielding sleeve and the second shielding sleeve are arranged in a spaced mode so as to form a discharging gap, the shielding sleeves can shield electric fields and magnetic fields so that the voltage measurement device can be prevented from interference of the electric fields and the magnetic fields, and the measurement precision of the voltage measurement device is guaranteed; the discharging gap can carry out discharging when a transient overvoltage is generated, fault electric arcs are led to the outer side of the shell, and the electric arcs are prevented from damaging the voltage measurement device in the shell.
Description
Technical field
The present invention relates to a kind of voltage live line measurement device, especially a kind of terminal voltage for measuring contact resistance is to calculate the resistance of contact resistance.
Background technology
People wish that electrical equipment contact is zero in contact site to the inhibition of circuit usually, and namely contact resistance is zero.But great many of experiments shows, the resistance at relay contacts position exists more or less, cannot ignore the impact of circuit.Therefore, the contact resistance of research electrical equipment, becomes extremely important to reduce to the impact of circuit.
Contact resistance is the resistance that two contact elements produce in contact site, whether the reliable operation of contact element, normal water conservancy diversion loop is generally several to tens microhms, there are even several thousand microhms up to a hundred, it is just the resistivity of its contact site in essence, pressure, whether free area is stablized, contact resistance is the potential difference (PD) on surface in contact both sides and the ratio by the electric current of surface in contact, meet Ohm law, i.e. RX=U/I, the metering system of current contact resistance all carries out under right and wrong online (off-line), a direct supply is provided to contact resistance two ends by measurement mechanism, and record U and I by reometer and voltage table, then contact resistance RX is calculated.Due to the potential difference (PD) of the contact resistance under live line measurement forceful electric power in electric system, need to consider that interference under highfield and high-intensity magnetic field and measurement mechanism are to itself the problem such as security of system and measurement mechanism, therefore prior art does not have the method and apparatus of live line measurement contact resistance potential difference (PD).
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provide a kind of can the measurement mechanism of live line measurement contact resistance potential difference (PD).
Object of the present invention realizes by following technical solution:
A kind of voltage live line measurement device, for the voltage of live line measurement high tension loop contact resistance to calculate resistance, it is characterized in that: comprise closed insulation shell, be arranged at the voltage measuring apparatus in housing, be set in first on housing, secondary shielding cover, described voltage measuring apparatus is provided with and extends to first of outside, second p-wire, second p-wire, voltage measuring apparatus and the first p-wire outer peripheral face be in housing are enclosed with the 3rd bell housing, described first, the corresponding conduction with the first p-wire and the 3rd bell housing of secondary shielding cover is connected, described first, secondary shielding cover interval is arranged to form discharging gap.
Further, the present invention also comprises the first wireless communication module that setting is connected with voltage measuring apparatus in the housing, the terminal device being provided with the second wireless communication module, and described voltage measuring apparatus realizes data by first, second wireless communication module and terminal device and transmits.
Further, described housing is provided with insulating bar, described secondary shielding puts the resigning hole offering and pass for insulating bar, and described first wireless communication module outwards transmits data by resigning hole.
Further, first, second wireless communication module described is bluetooth communication or WiFi communication module.
Further, in first, second bell housing described, at least one party is movably set on housing to regulate the size of described discharging gap.
Further, described terminal device is mobile phone, panel computer or computing machine.
Further, described housing is cylindrical.
Further, the discharging gap between the annular edge edge that first, second bell housing described is relative is equal everywhere.
Further, described housing is provided with the insulator passed for the first p-wire.
Further, first, second bell housing described forms by around the collar of housing outer peripheral face and the shrouding of closed collar end face
The present invention has following beneficial effect:
Voltage measuring apparatus is arranged in the housing, and at outside first, second bell housing sheathed, second p-wire, voltage measuring apparatus and part first p-wire outer peripheral face be enclosed with the 3rd bell housing, bell housing maskable Electric and magnetic fields, prevent voltage measuring apparatus to be subject to the interference of Electric and magnetic fields, ensure the measuring accuracy of voltage measuring apparatus; First, second bell housing interval arranges formation discharging gap, discharging gap can discharge when there is transient overvoltage, fault electric arc is guided into outside housing, prevent the voltage measuring apparatus in electric arc damage housing, also by regulating discharging gap to adapt to different conditions of work; Housing arranges insulating bar, operating personnel can be convenient to and carry out high-order live line measurement, and ensure processing safety; Voltage measuring apparatus realizes radio communication by wireless communication module and terminal device, by data transfer to terminal device, thus can observe easily and record measurement result.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is functional block diagram of the present invention.
Fig. 3 is cut-open view of the present invention.
Embodiment
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, a kind of voltage live line measurement device, comprise insulation shell 1, voltage measuring apparatus 3, first bell housing 21, secondary shielding cover the 22, the 3rd bell housing 52, insulator 53, first bluetooth communication 4 and mobile phone 6, wherein, the first bell housing 21, secondary shielding cover the 22, the 3rd bell housing 52 are the metal material such as copper, aluminium.
Housing 1 is cylindrical, is provided with insulating bar 11 below it, and this insulating bar 11 can be the rhabodoid of scalable adjustment, housing 1 can be risen to a high position by insulating bar 11, to measure the potential difference (PD) being positioned at high-order contact resistance R, first, secondary shielding cover 21, 22 outsides being set in housing 1, first bell housing 21 forms by around the collar 211 of housing 1 outer peripheral face and the shrouding 212 of closed collar 211 end face, secondary shielding cover 22 forms by around the collar 222 of housing 1 outer peripheral face and the shrouding 223 of closed collar 222 end face, secondary shielding cover 22 offers the resigning hole 221 passed for insulating bar 11, it is inner that voltage measuring apparatus 3 is arranged on housing 1, is provided with and extends to first of housing 1 outside, second p-wire 31, 32, for measuring the potential difference (PD) at contact resistance R two ends, housing 1 and shrouding 212, 223 are formed for first, second p-wire 31, 32 resigning holes passed, the 3rd bell housing 52 wraps up the second p-wire 32, voltage measuring apparatus 3 and part first p-wire 31, insulator 53 is arranged on mesopore housing 1 being formed with and passing for the first p-wire 31, wherein, first, secondary shielding cover 21, 22 by wire 331, 332 corresponding and the first p-wires 31, 3rd bell housing 52 conducts electricity and connects, and first, secondary shielding cover 21, 22 intervals are arranged to form discharging gap L, first, secondary shielding cover 21, 22 relative annular edge along between discharging gap L equal everywhere.
First bluetooth communication 4 arranges within the case 1 and is connected with voltage measuring apparatus 3, the emitting antenna 41 of the first bluetooth communication 4 is arranged near resigning hole 221, externally measurement data is sent by resigning hole 221, mobile phone 6 is built-in with the second bluetooth communication 61, voltage measuring apparatus 3 realizes data by first, second bluetooth communication 4,61 and mobile phone 6 and transmits, and mobile phone 6 receives data and display measurement result.
Concrete metering system is: by insulating bar 11, housing 1 is risen to a high position, two p-wires 31,32 of voltage measuring apparatus 3 are conducted electricity with the two ends wire of contact resistance R be connected, measurement result is sent to mobile phone 6 by first, second bluetooth communication 4,61 by voltage measuring apparatus 3, mobile phone 6 receives and display measurement result, when causing transient overvoltage when there is thunderbolt, discharging gap L discharges, fault electric arc is guided into outside housing 1, prevent the voltage measuring apparatus 3 in electric arc damage housing 1.
The above, be only preferred embodiment of the present invention, therefore can not limit scope of the invention process with this, and the equivalence namely done according to the present patent application the scope of the claims and description changes and modifies, and all should still remain within the scope of the patent.
Claims (10)
1. a voltage live line measurement device, for the voltage of live line measurement high tension loop contact resistance to calculate resistance, it is characterized in that: comprise closed insulation shell, be arranged at the voltage measuring apparatus in housing, be set in first on housing, secondary shielding cover, described voltage measuring apparatus is provided with and extends to first of outside, second p-wire, second p-wire, voltage measuring apparatus and the first p-wire outer peripheral face be in housing are enclosed with the 3rd bell housing, described first, the corresponding conduction with the first p-wire and the 3rd bell housing of secondary shielding cover is connected, described first, secondary shielding cover interval is arranged to form discharging gap.
2. a kind of voltage live line measurement device according to claim 1, it is characterized in that: also comprise the first wireless communication module that setting is connected with voltage measuring apparatus in the housing, the terminal device being provided with the second wireless communication module, described voltage measuring apparatus realizes data by first, second wireless communication module and terminal device and transmits.
3. a kind of voltage live line measurement device according to claim 2, it is characterized in that: described housing is provided with insulating bar, described secondary shielding puts the resigning hole offering and pass for insulating bar, and described first wireless communication module outwards transmits data by resigning hole.
4. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: first, second wireless communication module described is bluetooth communication or WiFi communication module.
5. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: in first, second bell housing described, at least one party is movably set on housing to regulate the size of described discharging gap.
6. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: described terminal device is mobile phone, panel computer or computing machine.
7. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: described housing is cylindrical.
8. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: the discharging gap between the annular edge edge that first, second bell housing described is relative is equal everywhere.
9. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: described housing is provided with the insulator passed for the first p-wire.
10. a kind of voltage live line measurement device according to claim 1 or 2 or 3, is characterized in that: first, second bell housing described forms by around the collar of housing outer peripheral face and the shrouding of closed collar end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648650.7A CN104360135A (en) | 2014-11-14 | 2014-11-14 | Live line voltage measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648650.7A CN104360135A (en) | 2014-11-14 | 2014-11-14 | Live line voltage measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104360135A true CN104360135A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410648650.7A Pending CN104360135A (en) | 2014-11-14 | 2014-11-14 | Live line voltage measurement device |
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| CN (1) | CN104360135A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101005728A (en) * | 2007-03-30 | 2007-07-25 | 张祥华 | Section type rectifier for electronic accelerator |
| CN201075637Y (en) * | 2007-08-16 | 2008-06-18 | 浙江大学 | Puncture type lightning protection equipment for preventing aerial insulated wire lightning stroke yarn cutting |
| CN202931468U (en) * | 2012-11-16 | 2013-05-08 | 惠州Tcl王牌高频电子有限公司 | Tuner and television |
| CN203216996U (en) * | 2013-04-03 | 2013-09-25 | 国家电网公司 | High-voltage switch contact resistor online tester |
| CN203405507U (en) * | 2013-08-09 | 2014-01-22 | 衡阳一互电气有限公司 | Integrally cast electronic voltage transformer for detecting current |
| CN203406161U (en) * | 2013-08-09 | 2014-01-22 | 衡阳一互电气有限公司 | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer |
| CN103792403A (en) * | 2012-10-30 | 2014-05-14 | 杨丽琴 | High-voltage divider |
| CN204203331U (en) * | 2014-11-14 | 2015-03-11 | 国家电网公司 | A kind of voltage live line measurement device |
-
2014
- 2014-11-14 CN CN201410648650.7A patent/CN104360135A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005728A (en) * | 2007-03-30 | 2007-07-25 | 张祥华 | Section type rectifier for electronic accelerator |
| CN201075637Y (en) * | 2007-08-16 | 2008-06-18 | 浙江大学 | Puncture type lightning protection equipment for preventing aerial insulated wire lightning stroke yarn cutting |
| CN103792403A (en) * | 2012-10-30 | 2014-05-14 | 杨丽琴 | High-voltage divider |
| CN202931468U (en) * | 2012-11-16 | 2013-05-08 | 惠州Tcl王牌高频电子有限公司 | Tuner and television |
| CN203216996U (en) * | 2013-04-03 | 2013-09-25 | 国家电网公司 | High-voltage switch contact resistor online tester |
| CN203405507U (en) * | 2013-08-09 | 2014-01-22 | 衡阳一互电气有限公司 | Integrally cast electronic voltage transformer for detecting current |
| CN203406161U (en) * | 2013-08-09 | 2014-01-22 | 衡阳一互电气有限公司 | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer |
| CN204203331U (en) * | 2014-11-14 | 2015-03-11 | 国家电网公司 | A kind of voltage live line measurement device |
Non-Patent Citations (2)
| Title |
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| 单晶: "《普通物理疑难分析》", 30 April 2014, 沈阳出版社 * |
| 张小青: "《风电机组防雷与接地》", 31 July 2009, 中国电力出版社 * |
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Application publication date: 20150218 |
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