CN104655314B - Electrical equipment connector lead temperature measuring device prepared by adopting fusible alloy - Google Patents
Electrical equipment connector lead temperature measuring device prepared by adopting fusible alloy Download PDFInfo
- Publication number
- CN104655314B CN104655314B CN201510124947.8A CN201510124947A CN104655314B CN 104655314 B CN104655314 B CN 104655314B CN 201510124947 A CN201510124947 A CN 201510124947A CN 104655314 B CN104655314 B CN 104655314B
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- arc elastic
- electrical equipment
- fusible alloy
- intermediate plate
- elastic intermediate
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- 229910000743 fusible alloy Inorganic materials 0.000 title claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000006023 eutectic alloy Substances 0.000 claims description 5
- 229910000634 wood's metal Inorganic materials 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims 1
- 230000005496 eutectics Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 6
- 229910052797 bismuth Inorganic materials 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 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
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 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
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Abstract
The invention discloses an electrical equipment connector lead temperature measuring device prepared by adopting a fusible alloy. The electrical equipment connector lead temperature measuring device comprises a left arc elastic clamping piece and a right arc elastic clamping piece. The electrical equipment connector lead temperature measuring device is characterized in that semi-circular curved sections of the lower ends of the arc elastic clamping pieces are both provided with coil springs enabling lower end clamping openings of the left and right arc elastic clamping pieces to be clamped tightly; the middle of a base plate surface of a round seat plate is provided with an overtemperature sign cylinder the outer side of which is sleeved by a cylindrical seal cap; the center of the cylindrical seal cap is provided with a core rod sleeved with a compression spring; the part, passing through a central through hole of the round base plate, of the core rod is sleeved with a fusible alloy ring; a heat conduction screw cap is screwed tightly on the upper end of the core rod. The device can be installed under the condition that a high-voltage power transformation device runs with power, furthermore, because the fusible alloy is adopted as a temperature test material, the device has the advantages of accurate fuse point, narrow range, response sensitivity and short fuse time; moreover, the fuse point can be adjusted according to seasons, the influences by natural temperature rise can be eliminated, and the fault temperature rise can be judged more accurately; the device is easy to install, is flexible and convenient to use, and has an obvious warning effect.
Description
Technical field
The present invention relates to a kind of improvement of electrical equipment joint temperature measuring equipment, specifically one kind can replace temperature indicating wax
The electrical equipment lug wire temperature measuring equipment that the more stable use fusible alloy of piece, performance makes.
Background technology
Electrical equipment conductor joint heating is a kind of frequent failure in transformer station, due to environmental factor, joint design, install and
The reason such as maintenance craft is improper, causes the failure to happen occasionally.When power network summer peak meeting, the kurtosis winter is met, when load current is larger,
Electrical equipment conductor joint heating failure is easier to be occurred.If device junction heating accident long-term existence may be led without being found
Cause equipment has a power failure, or even device damage accident.Therefore, heat generating spot is found in time, and hidden danger to existing is eliminated in time, is
Prevent the key of power equipment accident.At present, the method for judging converting equipment conductor joint heating, is typically employed in electrical equipment joint
Upper stickup temperature display wax sheet, when the temperature of converting equipment conductor joint heating reaches the fusing point of temperature display wax sheet, is pasted onto electrical equipment and connects
Temperature display wax sheet on head will melt and come off, and advanced warning shows to have exceeded nominal operating temperature herein, need to be examined in time
Repair or reduce load operation.Deficiency using temperature display wax sheet is：One be powered stickup temperature display wax sheet, it is necessary to special equipment, glue
Patch is inconvenient；Two is temperature display wax sheet unstable properties, and its fusing point is too low and non-adjustable, no matter winter or summer, its fusing point
It is consistent, can be also melted under the irradiation of summer sunlight, it is impossible to the heat for hindering generation for some reason heated up naturally at the row of test, real
Amount, easily misleads, and observation is also inconvenient, and warning function is easily ignored；Three is because temperature display wax sheet is pasted by glue
In converting equipment joint infall, so it is solid to be pasted not strongly, bonded area is inconsistent, have impact on thermometric effect；Four is temperature indicating wax
Piece is pasted onto at terminal, is pasted onto on wire, so can not direct test lead temperature.
It is known that：Fusible alloy, also referred to as mould alloy, are the alloy being made of elements such as bismuth, lead, tin and cadmiums, fusing point
At 47-200 DEG C, fusing point can be as needed allocated, be widely used to the fields such as electrical equipment, steam, fire-fighting, fire alarm, to survey
Examination electrical equipment conductor joint heating provides new foundation；The advantage of fusible alloy is：Fusing point standard, narrow range, it is quick on the draw, melts
Time is short.
By retrieval, it is to try adiabator with fusible alloy to have not yet to see a kind of, and can be with the electricity of powered assembly and disassembly
The report of gas device junction wire temperature measuring equipment.
The content of the invention
Temperature display wax sheet, performance can be replaced more to stablize it is an object of the invention to provide one kind, and fusing point can basis
Electrical equipment lug wire temperature measuring equipment needing adjustment, being made using fusible alloy.
In order to reach object above, the technical solution adopted in the present invention is：This is electrically set using what fusible alloy made
Standby lug wire temperature measuring equipment, including arc elastic intermediate plate, arc elastic intermediate plate set left and right two panels, left and right two panels arc elastic
It is in contact in the middle part of intermediate plate, the top of left and right two panels arc elastic intermediate plate is dehisced, by left and right two panels arc elastic intermediate plate
Dehisce to snap in electrical equipment lug wire in top, it is characterised in that：The lower end of described left and right two panels arc elastic intermediate plate is all provided with
There is radius bend section, the wind spring for clamping the lower end jaws of left and right two panels arc elastic intermediate plate, volume are provided with radius bend section
The shaft end of spring is fixed by supporting plate with circular seat board, and inwardly extruding left and right two panels arc elastic simultaneously by two wind springs presss from both sides
The lower end jaws of piece, just can clamp electrical equipment lug wire, make it in the lower end jaws of left and right two panels arc elastic intermediate plate
Fixation；The base surface middle part of described circular seat board is provided with the overtemperature mark cylinder for connecting as one, outside overtemperature mark cylinder
Side is arranged tubular sealing cap, and the cavity heights of tubular sealing cap are consistent with the length of overtemperature mark cylinder, in normal state, tubular sealing cap
Sealing cover is in the outside of overtemperature mark cylinder, it is impossible to observe overtemperature mark cylinder；The base plate center of described tubular sealing cap is provided with fixation
The core bar of the threaded head being integrated, is arranged compression spring on core bar, and the upper end of core bar passes through the central through hole of circular seat board,
Pass through the position of the central through hole of circular seat board to be arranged fusible alloy ring in the upper end of core bar, then heat conduction is tightened in the upper end of core bar
Nut is fixed；The overall diameter with diameter greater than heat conduction nut of described circular seat board central through hole, it is outer less than fusible alloy ring
Diameter, by the stop of fusible alloy ring, prevents heat conduction nut from deviating from downwards from the central through hole of circular seat board；Described heat conduction
Electrical equipment lug wire is touched in the upper end of nut, and electrical equipment lug wire heating temp is transmitted to fusion gold by heat conduction nut
Ring, when the fusing point of fusible alloy ring is reached, the fusing of fusible alloy ring no longer stops that heat conduction nut leads to from the center of circular seat board
Hole is deviate from, so, in the presence of compression spring, central through hole of the heat conduction nut just from circular seat board is deviate from downwards, while will
Tubular sealing cap is ejected downwards, no longer covers overtemperature mark cylinder, and overtemperature mark cylinder exposes, just points out at this electrical equipment lug wire
Temperature has exceeded the temperature of fusible alloy ring setting.
The present invention is also implemented by following measure：Described fusible alloy ring is that five composition eutectic alloys or Li Boweizi are closed
One kind in gold, is fused and mixed by the different proportioning of the selection of Bi, pb, Sn, Cd and is made；The fusing point of five described composition eutectic alloys is
46.7 DEG C, it is adaptable to winter thermometric；The fusing point of described Lipowitz's alloy is 70 DEG C, it is adaptable to summer thermometric.
The lower end jaws inner side of described arc elastic intermediate plate is provided with arc convex, with increase arc elastic intermediate plate with it is electric
The contact area of device junction wire.
The outer end of described wind spring is supported to the lateral wall of the radius bend section of arc elastic intermediate plate lower end, described wind spring
The inner is supported to the madial wall of the radius bend section of arc elastic intermediate plate lower end, the outer end of wind spring and the inner expansion in both sides
State.
The lower mouth of described overtemperature mark cylinder is provided with opening's edge of turning up；Suitable for reading being provided with of described tubular sealing cap interior buckles opening's edge.
The outer wall of described overtemperature mark cylinder scribbles red paint, to serve as warning.
The bottom wall both sides of described tubular sealing cap are provided with the mounting bar being adapted with transformer substation grounding wire insulating bar installing port,
The overall diameter of tubular sealing cap is adapted with the interior diameter of transformer substation grounding wire insulating bar installing port；Described tubular sealing cap is closed for aluminium
Golden material is made, to mitigate weight.
The beneficial effects of the present invention are：The electrical equipment lug wire temperature measuring equipment made using fusible alloy, with
Current temperature display wax sheet is compared, and can not only be installed under the situation of high-tension transformation equipment charging operation, and as a result of easy
Fusion gold as examination adiabator, so have the advantages that fusing point standard, narrow range, be quick on the draw, the thawing time it is short, and fusing point can
According to seasonal adjustment, the influence of nature intensification can be rejected, more accurate failure judgement heats up；As a result of arc elastic
Intermediate plate holding electrical device junction wire, so installing easy；As a result of the envelope of the control overtemperature mark cylinder of fusible alloy
Whether close, so using flexible, convenient, and overtemperature mark cylinder warning function substantially, effectively avoid the warm materials of other examinations
Material need to have a power failure and install and wasting time and energy of causing；Due to direct detection conductor temperature, so thermometric effect is more direct.
Brief description of the drawings
Fig. 1 is structure of the invention office section view enlarged diagram.
In figure：1st, arc elastic intermediate plate；2nd, electrical equipment lug wire；3rd, wind spring；4th, circular seat board；5th, radius bend
Section；6th, overtemperature mark cylinder；7th, tubular sealing cap；8th, core bar；9th, compression spring；10th, central through hole；11st, fusible alloy ring；12nd, lead
Hot nut；13rd, arc convex；14th, supporting plate；15th, turn up opening's edge；16th, interior button opening's edge；17th, mounting bar.
Specific embodiment
The electrical equipment lug wire temperature measuring equipment made using fusible alloy, including arc elastic intermediate plate 1, arc bullet
Property intermediate plate 1 sets left and right two panels, and the middle part of left and right two panels arc elastic intermediate plate 1 is in contact, left and right two panels arc elastic intermediate plate 1
Top dehisce, dehisce to snap in electrical equipment lug wire 2 by the top of left and right two panels arc elastic intermediate plate 1, its feature exists
In：The lower end of described left and right two panels arc elastic intermediate plate 1 is equipped with radius bend section 5, and being provided with radius bend section 5 makes
The wind spring 3 that the lower end jaws of left and right two panels arc elastic intermediate plate 1 is clamped, the shaft end of wind spring 3 is by supporting plate 14 and circular seat board
4 fix, and inwardly extrude the lower end jaws of left and right two panels arc elastic intermediate plate 1 simultaneously by two wind springs 3, just can clamp electrically
Device junction wire 2, makes its fixation in the lower end jaws of left and right two panels arc elastic intermediate plate 1, will not be because of circular seat board
4 and its connection part self gravitation factor and come off, or loose contact；The base surface middle part of described circular seat board 4 sets
There is the overtemperature mark cylinder 6 for connecting as one, the outside of overtemperature mark cylinder 6 is arranged tubular sealing cap 7, the cavity heights of tubular sealing cap 7
Length with overtemperature mark cylinder 6 is consistent, and in normal state, the sealing cover of tubular sealing cap 7 is in the outside of overtemperature mark cylinder 6, it is impossible to see
Measure overtemperature mark cylinder 6；The base plate center of described tubular sealing cap 7 is provided with the core bar 8 of the threaded head being fixed as one, in core
Compression spring 9 is arranged on bar 8, the upper end of core bar 8 passes through the central through hole 10 of circular seat board 4, in the upper end of core bar 8 through circle
The position of the central through hole 10 of seat board 4 is arranged fusible alloy ring 11, then tightens heat conduction nut 12 in the upper end of core bar 8 and fix；Institute
The overall diameter with diameter greater than heat conduction nut 12 of the central through hole 10 of circular seat board 4 stated, less than the overall diameter of fusible alloy ring 11,
By the stop of fusible alloy ring 11, prevent heat conduction nut 12 from deviating from downwards from the central through hole 10 of circular seat board 4；Described leads
Electrical equipment lug wire 2 is touched in the upper end of hot nut 12, and the heating temp of electrical equipment lug wire 2 is passed by heat conduction nut 12
To molten alloy hoop 11, when the fusing point of fusible alloy ring 11 is reached, fusible alloy ring 11 melts, no longer stop heat conduction nut 12 from
The central through hole 10 of circular seat board 4 is deviate from, so, in the presence of compression spring 9, heat conduction nut 12 is just from circular seat board 4
Central through hole 10 is deviate from downwards, while tubular sealing cap 7 is ejected downwards, no longer covers overtemperature mark cylinder 6, and overtemperature mark cylinder 6 reveals
Go out, just point out temperature at this electrical equipment lug wire 2 to exceed the temperature of the setting of fusible alloy ring 11, you can to judge to be deposited at this
In heating defect, it is necessary to immediately treat.
As improvement of the invention：Described fusible alloy ring 11 is in five composition eutectic alloys or Lipowitz's alloy
One kind, is fused and mixed by the different proportioning of the selection of Bi, pb, Sn, Cd and is made；The fusing point of five described composition eutectic alloys is 46.7
DEG C, it is adaptable to winter thermometric；The fusing point of described Lipowitz's alloy is 70 DEG C, it is adaptable to summer thermometric.
The lower end jaws inner side of described arc elastic intermediate plate 1 is provided with arc convex 13, with increase arc elastic intermediate plate 1 with
The contact area of electrical equipment lug wire 2.
The outer end of described wind spring 3 is supported to the lateral wall of the radius bend section 5 of the lower end of arc elastic intermediate plate 1, described volume
The inner of spring 3 is supported to the madial wall of the radius bend section 5 of the lower end of arc elastic intermediate plate 1, and the outer end and the inner of wind spring 3 are in two
The swelling state of side.
The lower mouth of described overtemperature mark cylinder 6 is provided with opening's edge 15 of turning up；Suitable for reading being provided with of described tubular sealing cap 7 interior buckles mouth
Along 16, when tubular sealing cap 7 comes off downwards, interior when tubular sealing cap 7 buckles the opening's edge 15 of turning up that opening's edge 16 drops down onto overtemperature mark cylinder 6
When, just stop because being obstructed.
The outer wall of described overtemperature mark cylinder 6 scribbles red paint, to serve as warning.
The bottom wall both sides of described tubular sealing cap 7 are provided with the mounting bar being adapted with transformer substation grounding wire insulating bar installing port
17, the overall diameter of tubular sealing cap 7 is adapted with the interior diameter of transformer substation grounding wire insulating bar installing port, becomes when mounting bar 17 enters
Behind the axially open bottom of power station earth wire insulating rod installing port, tubular sealing cap 7 enters transformer substation grounding wire insulating bar installing port
It is interior, by the rotation of transformer substation grounding wire insulating bar, mounting bar 17 can be made to enter the horizontal stroke of transformer substation grounding wire insulating bar installing port
To in opening, so that tubular sealing cap 7 is fixed, handling of the invention are realized；Described tubular sealing cap 7 is aluminum alloy materials system
Into to mitigate weight.
During using the present invention, operation maintenance personnel picks up special transformer substation grounding wire insulating bar, clamps tubular sealing cap 7, leans on
Temperature indicating position need to be closely installed, the top jaws of arc elastic intermediate plate 1 is contacted electrical equipment lug wire 2, operation maintenance personnel is rapid
Firmly, electrical equipment lug wire 2 can be snapped in the lower end jaws of arc elastic intermediate plate 1, while leading electrical equipment joint
Line 2 touches heat conduction nut 12, in the presence of wind spring 3, by the clamping of electrical equipment lug wire 2, is rotated further by transformer substation grounding wire
Insulating bar, transformer substation grounding wire insulating bar is fetched.Similarly, reverse operating, you can remove the electrical equipment joint temperature measuring equipment.
Claims (4)
1. the electrical equipment lug wire temperature measuring equipment for being made using fusible alloy, including arc elastic intermediate plate（1）, core bar（8）、
Compression spring（9）, fusible alloy ring（11）, arc elastic intermediate plate（1）If left and right two panels, left and right two panels arc elastic intermediate plate
（1）Middle part be in contact, left and right two panels arc elastic intermediate plate（1）Top dehisce；In core bar（8）On be arranged compression spring
（9）；It is characterized in that：Described left and right two panels arc elastic intermediate plate（1）Lower end be equipped with radius bend section（5）, in semicircle
Bending section（5）Inside being provided with makes left and right two panels arc elastic intermediate plate（1）The wind spring that clamps of lower end jaws（3）, wind spring（3）Axle
End passes through supporting plate（14）With circular seat board（4）It is fixed；Described circular seat board（4）Base surface middle part be provided with and connect as one
Overtemperature mark cylinder（6）, overtemperature mark cylinder（6）Outside be arranged tubular sealing cap（7）, tubular sealing cap（7）Cavity heights with it is super
Temperature scale will cylinder（6）Length it is consistent；Described tubular sealing cap（7）Base plate center be provided with the core of the threaded head being fixed as one
Bar（8）, core bar（8）Upper end pass through circular seat board（4）Central through hole（10）, in core bar（8）Upper end pass through circular seat board
（4）Central through hole（10）Position be arranged fusible alloy ring（11）, then in core bar（8）Upper end tighten heat conduction nut（12）Gu
It is fixed；Described circular seat board（4）Central through hole（10）With diameter greater than heat conduction nut（12）Overall diameter, less than fusible alloy ring
（11）Overall diameter；Described heat conduction nut（12）Upper end touch electrical equipment lug wire（2）, electrical equipment lug wire
（2）Heating temp passes through heat conduction nut（12）It is transmitted to molten alloy hoop（11）；Described fusible alloy ring（11）It is five composition eutectics
One kind in alloy or Lipowitz's alloy；The fusing point of five described composition eutectic alloys is 46.7 DEG C；Described Li Boweizi
The fusing point of alloy is 70 DEG C；Described wind spring（3）Outer end support to arc elastic intermediate plate（1）The radius bend section of lower end（5）'s
Lateral wall, described wind spring（3）The inner support to arc elastic intermediate plate（1）The radius bend section of lower end（5）Madial wall.
2. the electrical equipment lug wire temperature measuring equipment that use fusible alloy according to claim 1 makes, its feature exists
In：Described arc elastic intermediate plate（1）Lower end jaws inner side be provided with arc convex（13）.
3. the electrical equipment lug wire temperature measuring equipment that use fusible alloy according to claim 1 makes, its feature exists
In：Described overtemperature mark cylinder（6）Lower mouth be provided with opening's edge of turning up（15）；Described tubular sealing cap（7）Suitable for reading be provided with interior button
Opening's edge（16）.
4. the electrical equipment lug wire temperature measuring equipment that use fusible alloy according to claim 1 makes, its feature exists
In：Described tubular sealing cap（7）Bottom wall both sides be provided with the mounting bar being adapted with transformer substation grounding wire insulating bar installing port
（17）, tubular sealing cap（7）The interior diameter of overall diameter and transformer substation grounding wire insulating bar installing port be adapted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510124947.8A CN104655314B (en) | 2015-03-23 | 2015-03-23 | Electrical equipment connector lead temperature measuring device prepared by adopting fusible alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510124947.8A CN104655314B (en) | 2015-03-23 | 2015-03-23 | Electrical equipment connector lead temperature measuring device prepared by adopting fusible alloy |
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| Publication Number | Publication Date |
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| CN104655314A CN104655314A (en) | 2015-05-27 |
| CN104655314B true CN104655314B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510124947.8A Active CN104655314B (en) | 2015-03-23 | 2015-03-23 | Electrical equipment connector lead temperature measuring device prepared by adopting fusible alloy |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161264A (en) * | 2015-09-21 | 2015-12-16 | 国网辽宁省电力有限公司鞍山供电公司 | Universal insulating shield with electric contact heating alerter |
| CN105466593B (en) * | 2015-12-03 | 2017-12-05 | 宁波澳玛特高精冲压机床股份有限公司 | Crankcase temperature monitoring system, crankcase temperature monitoring method and punch press |
| CN105758536B (en) * | 2016-05-04 | 2018-03-30 | 国网山东省电力公司莱芜供电公司 | The temperature measurement and alarm device of electrical apparatus interstar connection folder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356790A (en) * | 1980-07-16 | 1982-11-02 | Huntington Tool, Inc. | Temperature indicator |
| DE3229020C2 (en) * | 1982-08-04 | 1985-10-31 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart | Device for displaying an excess temperature of an electrical conductor |
| CN1197277A (en) * | 1998-05-15 | 1998-10-28 | 青岛高科技工业园金斯达通信开发有限公司 | Realizing method and device for protecting and warning when resistance of security device losing efficacy |
| CN204535883U (en) * | 2015-03-23 | 2015-08-05 | 国家电网公司 | Adopt the electrical equipment lug wire temperature measuring equipment that fusible alloy makes |
-
2015
- 2015-03-23 CN CN201510124947.8A patent/CN104655314B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356790A (en) * | 1980-07-16 | 1982-11-02 | Huntington Tool, Inc. | Temperature indicator |
| DE3229020C2 (en) * | 1982-08-04 | 1985-10-31 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart | Device for displaying an excess temperature of an electrical conductor |
| CN1197277A (en) * | 1998-05-15 | 1998-10-28 | 青岛高科技工业园金斯达通信开发有限公司 | Realizing method and device for protecting and warning when resistance of security device losing efficacy |
| CN204535883U (en) * | 2015-03-23 | 2015-08-05 | 国家电网公司 | Adopt the electrical equipment lug wire temperature measuring equipment that fusible alloy makes |
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|---|---|
| CN104655314A (en) | 2015-05-27 |
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