CN204788743U - High voltage isolator touches and indicates pressure measurement - Google Patents
High voltage isolator touches and indicates pressure measurement Download PDFInfo
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- CN204788743U CN204788743U CN201520399522.3U CN201520399522U CN204788743U CN 204788743 U CN204788743 U CN 204788743U CN 201520399522 U CN201520399522 U CN 201520399522U CN 204788743 U CN204788743 U CN 204788743U
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- 238000009530 blood pressure measurement Methods 0.000 title abstract 2
- 238000004088 simulation Methods 0.000 claims abstract description 61
- 230000000694 effects Effects 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a high voltage isolator touches and indicates pressure measurement, include: the tubulose handle, it has the tubulose handle body, and tubulose handle body top sets up spout bottom surface board, sets up the external connection hole on the lateral wall of lower part, and the bottom sets up the back lid, simulation contact subassembly, it has left and right simulation contact, the flexible film formula sensor of spout and piezoresistive effect type, measure the display module, it has the display of measurement and sensor signal line, and sensor signal line one end is connected with the output of the flexible film formula sensor of piezoresistive effect type, and the external connection hole is worn out to the other end, is connected with the measurement display. The utility model relates to a rationally, compact structure, small, light in weight, adopt film formula pressure sensor, measurement accuracy is higher, the simulation contact is the same with actual contact size shape, has avoidd the influence of factors such as area of contact to actual measurement, and measuring result is more accurate to the mechanical damage to touching the finger has been reduced.
Description
Technical field
The utility model relates to a kind of high-voltage isolating switch sensing finger pressure pick-up unit, belongs to power industry pick-up unit.
Background technology
Disconnector is a kind of high-tension switch gear that in electric system, use amount is maximum, and it is exposed in atmospheric environment works completely, and service condition is relatively more severe, affects the most direct also the most serious by environmental weather conditions.Fingertip and the contact of high voltage isolator belong to mobile contact, for fingertip and contact provide the spring of pressure, often anneal because of corrosion and current heating, cause elastic force to decline or lose efficacy, causing contact portion easily to produce loose contact further.Contact portion loose contact can cause a series of secondary fault: (1) loose contact is easy to occur electric spark have the hidden danger causing fire; (2) loose contact causes contact part overheated, can accelerate the oxidation of contact, then aggravates the degree of loose contact; (3) contact that causes of contact portion is overheated likely can be welded on static contact contact, can not power down in time in time there is emergency episode.Above or its local fault, larger accident can be caused again by these local faults.These faults and accident be reciprocal causation again often, and direct, the indirect disaster economic loss caused is all very huge.
Ensureing that contact has enough contacts, is the important measures avoided contact bad and cause heating.Ensure that contact portion has enough large power to be compressed by contact, could surface of contact be increased, reduce contact resistance.Meanwhile, because contact is chronically exposed to open air, surface is comparatively serious by the invasion and attack of rainwater, dust, and contact portion surface easily chemical reaction occurs and generates the surface film of metal oxide, silver chloride.These surface film are harder, conduct electricity hardly, and only guaranteed fingertip has enough large pressure, in isolation switch contact fingertip deciliter process, could be crushed by surface film, play self-cleaning effect, ensure that contact is good further.
At present, most maintainer judges that the quality of high voltage isolator conductive portions contact also rests on the method for measuring circuit resistance, as long as think that loop resistance is in acceptability limit, high voltage isolator current-carrying part just contact is good.Actually this is not so, the loop resistance value provided in the product description of high voltage isolator comprises terminals, contact tube, conducting joint, the overall resistance touching first class sections and contact resistance, scope is comparatively large, generally has the nargin of 20%, directly can not reflect the change of contact resistance.Actual tests proves, 2 pairs of fingertips and 4 pairs of fingertips, and its loop resistance is poor several micro-ohm only, and equally, if the contact of fingertip is dropped to 20N by 120N, its total loop resistance value does not change, substantially still in acceptability limit.But, if high voltage isolator run under very low contact will inevitably occur overheated.Therefore, loop resistance is qualified can not illustrate that contact is good.
Simultaneously, the spring changing obviously inefficacy and fracture is often only noted in the service work of high voltage isolator, and to the spring that those elastic force reduce, because scene cannot judge, run if continue, the distribution of each fingertip electric current can be different because pressure is different, and more big current distribution is more uneven for pressure difference.Long-time running will come in contact bad and generate heat.The heating meeting vicious cycle of fingertip, a fingertip loose contact will spread whole contact.Meanwhile, for the disconnector of clamp type contact, needing to adjust contact pressure when installing or overhaul, not having the adjustment of detection means meeting build-up of pressure improper.When insufficient pressure there will be virtual connection phenomenon, or each sensing finger pressure difference is excessive, contact will be caused seriously to generate heat local melting, and have and be unable to bear the electrodynamic effect of short-circuit current, pushing contact open produce electric arc and burn out the danger of contact, will there is great accident potential in this.
Above analytic explanation ensures the importance of isolation switch contact contact, and the necessity of detection contact contact.But in electric system maintenance, to the foundation lacking standard in isolation switch contact maintenance, be rely on experience in the past, the observation of such as workman mostly, find the relatively serious just more exchange device of its oxidation, or according to statistics certain hour, equipment is changed etc.
Utility model content
The purpose of this utility model is exactly that provide a kind of high-voltage isolating switch sensing finger pressure pick-up unit, object is for the service work of switch touching head part provides standard foundation in order to solve the problem, and ensures the reliability of disconnector work.
To achieve these goals, the utility model adopts following technical scheme: a kind of high-voltage isolating switch sensing finger pressure pick-up unit, comprising:
Pipe handle, it has tubular handle body, and tubular handle body top arranges chute bottom panel, and the sidewall of bottom arranges external string holes, and bottom arranges bonnet;
Simulation contact assembly, it has a left side, right simulation contact, chute and piezoresistive effect type flexible thin film type sensor, left simulation contact has left simulation contact body portion, left simulation contact body portion inside top arranges left boss, the left test body of left simulation contact body portion arranged outside, right simulation contact has right simulation contact body portion, right simulation contact body portion inside top arranges right boss, the right test body of right simulation contact body portion arranged outside, chute top arranges upside face, left, the test structure of piezoresistive effect type flexible thin film type sensor is set between inside right simulation contact, and it is left, right simulation contact is placed in chute place, and it is left, right boss is installed on face place, upside, and it is left, right simulation contact is installed on chute bottom panel by chute, the main part of piezoresistive effect type flexible thin film type sensor is through chute bottom panel, be placed in the tubular handle body of pipe handle,
Measure display module, it has measures display and sensor signal lines, and sensor signal lines one end is connected with the output terminal of piezoresistive effect type flexible thin film type sensor, and the other end passes external string holes, is connected with measurement display.
Preferably: the inner side of left and right simulation contact arranges left round boss, right round boss respectively, the test structure of piezoresistive effect type flexible thin film type sensor is arranged between the left and right round boss of left and right simulation contact.
Preferably: left and right simulation contact is arranged symmetrically with.
Preferably: left and right boss is square boss.
Preferably: left and right test body contact outside face shape is identical with fingertip shape.
Preferably: the surface area of the inner side of left and right round boss is all identical with the sensing range surface area of the test structure of piezoresistive effect type flexible thin film type sensor.
Preferably: bonnet is fixed by screws on the tubular handle body of pipe handle.
Preferably: the chute bottom panel of pipe handle is fixed by screws in the downside of chute.
Compared with prior art, the utility model has following beneficial effect: (1) the utility model is reasonable in design, compact conformation, volume are little, lightweight; (2) the utility model adopts thin-film pressure sensor, and measuring accuracy is higher; (3) the utility model simulation contact is identical with actual contact size shape, and evaded the impact of the factors such as contact area on actual measurement, measurement result is more accurate, and decreases the mechanical damage to fingertip.
Accompanying drawing explanation
Fig. 1 is high-voltage isolating switch sensing finger pressure pick-up unit stereographic map.
Fig. 2 is high-voltage isolating switch sensing finger pressure pick-up unit actual measurement schematic diagram.
Fig. 3 is high-voltage isolating switch sensing finger pressure pick-up unit parts assembly drawings.
Fig. 4 is simulation contact partial structurtes side views.
Fig. 5 is the assembling schematic diagram of the simulation contact insertion chute upper-side hole pasting sensor.
Fig. 6 is the schematic diagram that sensor pastes on simulation contact.
Fig. 7 is the assembling schematic diagram that pipe handle and chute are connected by screw.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1 to Fig. 7, a kind of high-voltage isolating switch sensing finger pressure pick-up unit, comprises pipe handle 3, simulation contact assembly and measures display module.
Pipe handle 3 has tubular handle body 3b, and tubular handle body 3b top arranges chute bottom panel 3a, and the sidewall of bottom arranges external string holes 3c, and bottom arranges bonnet 4.
Simulation contact assembly has a left side, right simulation contact 11, 12 (common formation simulation contacts 1), chute 2 and piezoresistive effect type flexible thin film type sensor 8, left simulation contact 11 has left simulation contact body portion 11a, left simulation contact body portion 11a inside top arranges left boss 11b, the left test body 11c that left simulation contact body portion 11a arranged outside coordinates with fingertip, right simulation contact 12 has right simulation contact body portion 12a, right simulation contact body portion 12a inside top arranges right boss 12b, the right test body 12c that right simulation contact body portion 12a arranged outside coordinates with fingertip, chute 2 top arranges upside face 2a, left, right simulation contact 11, the test structure of piezoresistive effect type flexible thin film type sensor 8 is set between inside 12, and it is left, right simulation contact 11, 12 are placed in chute 2 place, and it is left, right boss 11b, 12b is installed on face 2a place, upside (sensor 8 pasted and a left side, be inserted in the upside face of chute to right simulation contacts mates), and it is left, right simulation contact 11, 12 are installed on chute bottom panel 3a by chute 2, the main part of piezoresistive effect type flexible thin film type sensor 8 is through chute bottom panel 3a, be placed in the tubular handle body 3b of pipe handle 3.
Measure display module and have measurement display 6 and sensor signal lines 5, sensor signal lines 5 one end is connected with the output terminal of piezoresistive effect type flexible thin film type sensor 8, and the other end passes external string holes 3c, is connected with measurement display 6.
The inner side of left and right simulation contact 11,12 arranges left round boss 1a, right round boss respectively, and the test structure of piezoresistive effect type flexible thin film type sensor 8 is arranged between the left and right round boss of left and right simulation contact 11,12.
Left and right simulation contact 11,12 is arranged symmetrically with.Left and right boss 11b, 12b are square boss.Left and right test body 11c, 12c contact outside face shape is identical with fingertip shape, to increase measuring accuracy and to reduce the mechanical damage to fingertip.The surface area of the inner side of left and right round boss is all identical with the sensing range surface area of the test structure of piezoresistive effect type flexible thin film type sensor 8, conveniently pastes sensor 8 (conveniently pasting the test structure of sensor 8).
Bonnet 4 is fixed on the tubular handle body 3b of pipe handle 3 by screw 7.The chute bottom panel 3a of pipe handle 3 is fixed on the downside 2b of chute by screw 7.
During actual measurement, high-voltage isolating switch sensing finger pressure pick-up unit simulation contact part (left and right simulation contact) is inserted into the actual closing position of isolation switch contact, the sensing finger pressure of disconnector is delivered in sensor by simulation contact, and the resistance variations of thin-film pressure sensor is delivered to measure in display and shows force value by signal wire.
The foregoing is only preferred implementation of the present utility model, protection domain of the present utility model is not limited in above-mentioned embodiment, and every technical scheme belonging to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, the some improvement carried out under the prerequisite not departing from principle of the present utility model, these improvement also should be considered as protection domain of the present utility model.
Claims (8)
1. a high-voltage isolating switch sensing finger pressure pick-up unit, is characterized in that, comprising:
Pipe handle (3), it has tubular handle body (3b), tubular handle body (3b) top arranges chute bottom panel (3a), the sidewall of bottom is arranged external string holes (3c), and bottom arranges bonnet (4);
Simulation contact assembly, it has a left side, right simulation contact (11, 12), chute (2) and piezoresistive effect type flexible thin film type sensor (8), left simulation contact (11) has left simulation contact body portion (11a), left simulation contact body portion (11a) inside top arranges left boss (11b), the left test body of left simulation contact body portion (11a) arranged outside (11c), right simulation contact (12) has right simulation contact body portion (12a), right simulation contact body portion (12a) inside top arranges right boss (12b), the right test body of right simulation contact body portion (12a) arranged outside (12c), chute (2) top arranges upside face (2a), left, right simulation contact (11, 12) test structure of piezoresistive effect type flexible thin film type sensor (8) is set between inner side, and it is left, right simulation contact (11, 12) chute (2) place is placed in, and it is left, right boss (11b, 12b) be installed on face (2a) place, upside, and it is left, right simulation contact (11, 12) be installed on chute bottom panel (3a) by chute (2), the main part of piezoresistive effect type flexible thin film type sensor (8) is through chute bottom panel (3a), be placed in the tubular handle body (3b) of pipe handle (3),
Measure display module, it has measurement display (6) and sensor signal lines (5), sensor signal lines (5) one end is connected with the output terminal of piezoresistive effect type flexible thin film type sensor (8), the other end passes external string holes (3c), is connected with measurement display (6).
2. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, it is characterized in that: the inner side of left and right simulation contact (11,12) arranges left round boss (1a), right round boss respectively, the test structure of piezoresistive effect type flexible thin film type sensor (8) is arranged between the left and right round boss of left and right simulation contact (11,12).
3. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, is characterized in that: left and right simulation contact (11,12) is arranged symmetrically with.
4. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, is characterized in that: left and right boss (11b, 12b) is square boss.
5. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, is characterized in that: left and right test body (11c, 12c) contact outside face shape is identical with fingertip shape.
6. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 2, is characterized in that: the surface area of the inner side of left and right round boss is all identical with the sensing range surface area of the test structure of piezoresistive effect type flexible thin film type sensor (8).
7. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, is characterized in that: bonnet (4) is fixed on the tubular handle body (3b) of described pipe handle (3) by screw (7).
8. high-voltage isolating switch sensing finger pressure pick-up unit according to claim 1, is characterized in that: the chute bottom panel (3a) of pipe handle (3) is fixed on the downside (2b) of chute by screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399522.3U CN204788743U (en) | 2015-06-11 | 2015-06-11 | High voltage isolator touches and indicates pressure measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399522.3U CN204788743U (en) | 2015-06-11 | 2015-06-11 | High voltage isolator touches and indicates pressure measurement |
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| Publication Number | Publication Date |
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| CN204788743U true CN204788743U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520399522.3U Expired - Fee Related CN204788743U (en) | 2015-06-11 | 2015-06-11 | High voltage isolator touches and indicates pressure measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949778A (en) * | 2015-06-11 | 2015-09-30 | 国家电网公司 | Pressure detecting device for contact fingers of high-voltage isolating switches |
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2015
- 2015-06-11 CN CN201520399522.3U patent/CN204788743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949778A (en) * | 2015-06-11 | 2015-09-30 | 国家电网公司 | Pressure detecting device for contact fingers of high-voltage isolating switches |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20151118 Termination date: 20210611 |
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| CF01 | Termination of patent right due to non-payment of annual fee |