CN204203334U - A kind of contact resistance live line measurement device - Google Patents
A kind of contact resistance live line measurement device Download PDFInfo
- Publication number
- CN204203334U CN204203334U CN201420682197.7U CN201420682197U CN204203334U CN 204203334 U CN204203334 U CN 204203334U CN 201420682197 U CN201420682197 U CN 201420682197U CN 204203334 U CN204203334 U CN 204203334U
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- Prior art keywords
- housing
- contact resistance
- line measurement
- live line
- measurement device
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- 238000005259 measurement Methods 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000012212 insulator Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 22
- 238000010891 electric arc Methods 0.000 abstract description 6
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical group C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of contact resistance live line measurement device, 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, first, second p-wire and voltage measuring apparatus outer peripheral face are enclosed with the 3rd, 4th bell housing, described first, secondary shielding cover is corresponding to the 3rd, 4th bell housing conduction connects, described 3rd, 4th bell housing is separated by the insulator be set on the first p-wire, described first, secondary shielding cover interval arranges and intercepts gap to be formed, described first, secondary shielding cover correspondence is arranged with first, the second metal discharge collar, first, second metal discharge cover central spacer is oppositely arranged to form 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.
Description
Technical field
The utility model relates to a kind of contact resistance live line measurement device, and 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 that whether the resistivity of its contact site, pressure, free area are stablized in essence, contact resistance is the potential difference (PD) on surface in contact both sides and the ratio by the electric current of surface in contact, meets Ohm law, i.e. R
x=U/I, the metering system of current contact resistance all carries out under right and wrong online (off-line), provides a direct supply, and records U and I by reometer and voltage table, then calculate contact resistance R by measurement mechanism to contact resistance two ends
x.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 purpose of this utility model 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).
The purpose of this utility model realizes by following technical solution:
A kind of contact resistance 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, first, second p-wire and voltage measuring apparatus outer peripheral face are enclosed with the 3rd, 4th bell housing, described first, secondary shielding cover is corresponding to the 3rd, 4th bell housing conduction connects, described 3rd, 4th bell housing is separated by the insulator be set on the first p-wire, described first, secondary shielding cover interval arranges and intercepts gap to be formed, described first, secondary shielding cover correspondence is arranged with first, the second metal discharge collar, first, second metal discharge cover central spacer is oppositely arranged to form discharging gap.
Further, the utility model 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 metal discharge collar described includes to be held tightly in the hold-fast ring section of the first bell housing outer peripheral face, electric discharge ring section that front end is formed with smooth ring discharge face and the abutment ring section that is connected between hold-fast ring section and electric discharge ring section, and parallel being oppositely arranged in the ring discharge face of first, second metal discharge collar forms described discharging gap.
Further, described discharging gap equals the obstruct gap of 1/5-3/5.
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, first, second bell housing described forms by around the collar of housing outer peripheral face and the shrouding of closed collar end face.
Further, the described first metal discharge collar is adjustably set on the first bell housing and/or the described second metal discharge collar is put by the removable secondary shielding that is adjustably set in of bolt by bolt is removable.
The utility model has following beneficial effect:
Voltage measuring apparatus is arranged in the housing, and at outside first, second bell housing sheathed, first, second p-wire and voltage measuring apparatus outer peripheral face are enclosed with the 3rd, the 4th 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; Form discharging gap between first, second metal discharge collar, discharging gap can discharge when there is transient overvoltage, is guided into by fault electric arc outside housing, prevents the voltage measuring apparatus in electric arc damage housing; Parallel being oppositely arranged in ring discharge face of first, second metal discharge collar forms discharging gap, the electric fields uniform of discharging gap can be made, ensure that discharging gap has good electric discharge repeatability, the size of going back regulating discharging gap makes it 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 utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is functional block diagram of the present utility model.
Fig. 3 is cut-open view of the present utility model.
Embodiment
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, a kind of contact resistance 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 51, the 4th 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 51, the 4th 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 4th bell housing 52 wraps up the second p-wire 32, voltage measuring apparatus 3 and part first p-wire the 31, three bell housing 51 wrapping portion first p-wire 31, insulator 53 is arranged on the housing 1 between the 3rd bell housing 51 and the 4th bell housing 52, wherein, first, secondary shielding cover 21, 22 by wire 331, 332 is corresponding to the 3rd, 4th bell housing 51, 52 conductions connect, and first, secondary shielding cover 21, 22 intervals arrange and intercept clearance D, first to be formed, secondary shielding cover 21, 22 correspondences are arranged with first, the second metal discharge collar 7, 8, first, the second metal discharge collar 7, 8 intervals are oppositely arranged to form discharging gap L, first, secondary shielding cover 21, 22 relative annular edge along between obstruct clearance D equal everywhere, first, the second metal discharge collar 7, the structure of 8 is identical, elaborates below for the first metal discharge collar 7 to its structure, and the first metal discharge collar 7 comprises the hold-fast ring section 71 of holding tightly at the first bell housing 21 outer peripheral face, the electric discharge ring section 72 that front end is formed with smooth ring discharge face 721 and the abutment ring section 73, first be connected between hold-fast ring section 71 and electric discharge ring section 72, the second metal discharge collar 7, parallel being oppositely arranged in the ring discharge face 721 of 8 forms discharging gap L, the cross section of ring section 72 of discharging as shown in figures 1 and 3 is roughly crescent, thus prevent electric discharge ring section 72 from forming distortion electric field, the hold-fast ring section 71 of the first metal discharge collar 7 is provided with clamping screw 74, can lock or discharge the first metal discharge collar 7 by degree of tightness clamping screw 74, be arranged on the first bell housing 21 with making the removable adjustment of the first metal discharge collar 7, thus regulate the size of discharging gap L.
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 utility model, therefore can not limit with this scope that the utility model implements, the equivalence namely done according to the utility model claim and description change with modify, all should still belong in scope that the utility model patent contains.
Claims (9)
1. a contact resistance 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, first, second p-wire and voltage measuring apparatus outer peripheral face are enclosed with the 3rd, 4th bell housing, described first, secondary shielding cover is corresponding to the 3rd, 4th bell housing conduction connects, described 3rd, 4th bell housing is separated by the insulator be set on the first p-wire, described first, secondary shielding cover interval arranges and intercepts gap to be formed, described first, secondary shielding cover correspondence is arranged with first, the second metal discharge collar, first, second metal discharge cover central spacer is oppositely arranged to form discharging gap.
2. a kind of contact resistance 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 contact resistance 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 contact resistance live line measurement device according to claim 1 or 2 or 3, it is characterized in that: first, second metal discharge collar described includes to be held tightly in the hold-fast ring section of the first bell housing outer peripheral face, electric discharge ring section that front end is formed with smooth ring discharge face and the abutment ring section that is connected between hold-fast ring section and electric discharge ring section, and parallel being oppositely arranged in the ring discharge face of first, second metal discharge collar forms described discharging gap.
5. a kind of contact resistance live line measurement device according to claim 1 or 2 or 3, is characterized in that: described discharging gap equals the obstruct gap of 1/5-3/5.
6. a kind of contact resistance 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.
7. a kind of contact resistance 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.
8. a kind of contact resistance 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.
9. a kind of contact resistance live line measurement device according to claim 1 or 2 or 3, is characterized in that: the described first metal discharge collar is adjustably set on the first bell housing and/or the described second metal discharge collar is put by the removable secondary shielding that is adjustably set in of bolt by bolt is removable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682197.7U CN204203334U (en) | 2014-11-14 | 2014-11-14 | A kind of contact resistance live line measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682197.7U CN204203334U (en) | 2014-11-14 | 2014-11-14 | A kind of contact resistance live line measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203334U true CN204203334U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420682197.7U Expired - Fee Related CN204203334U (en) | 2014-11-14 | 2014-11-14 | A kind of contact resistance live line measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
-
2014
- 2014-11-14 CN CN201420682197.7U patent/CN204203334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20211114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |