CN104655314A - 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
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- CN104655314A CN104655314A CN201510124947.8A CN201510124947A CN104655314A CN 104655314 A CN104655314 A CN 104655314A CN 201510124947 A CN201510124947 A CN 201510124947A CN 104655314 A CN104655314 A CN 104655314A
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- electrical equipment
- arc elastic
- fusible alloy
- intermediate plate
- temperature measuring
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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 a kind of electrical equipment lug wire temperature measuring equipment that can replace the more stable employing fusible alloy of temperature display wax sheet, performance and make.
Background technology
In transformer station, electrical equipment conductor joint heating is a kind of frequent failure, due to reasons such as environmental factor, joint design, installation and maintenance inappropriate technologies, causes this fault to happen occasionally.When electrical network summer peak meeting, meet the kurtosis winter, when load current is larger, electrical equipment conductor joint heating fault is easier to occur.If device junction heating accident long-term existence and not being found, equipment may be caused to have a power failure, even device damage accident.Therefore, Timeliness coverage heat generating spot, and the hidden danger existed is eliminated in time, be the key of prevention power equipment accident.At present, judge the method for converting equipment conductor joint heating, be typically employed on electrical equipment joint and paste temperature display wax sheet, when the temperature of converting equipment conductor joint heating reaches the fusing point of temperature display wax sheet, the temperature display wax sheet be pasted onto on electrical equipment joint will melt and come off, advanced warning, shows to exceed nominal operating temperature herein, need carry out in time overhauling or reducing load operation.Adopt the deficiency of temperature display wax sheet to be: one is charged stickup temperature display wax sheet, needs specialized equipment, paste inconvenient; Two is temperature display wax sheet unstable properties, its fusing point is too low, and it is non-adjustable, in no matter winter or summer, its fusing point is consistent, summer sunlight also can melt under irradiating, can not the row of test locate that nature heats up, the real heat because of fault generation, easily mislead, observation is also inconvenient, and warning function is easily out in the cold; Three is because temperature display wax sheet is pasted onto converting equipment joint infall by glue, so it is solid to be pasted not strongly, bonded area is inconsistent, have impact on thermometric effect; Four is that temperature display wax sheet is pasted onto terminal place, is not be pasted onto on wire, so can not direct test lead temperature.
Well-known: fusible alloy, also mould alloy is claimed, it is the alloy made with elements such as bismuth, lead, tin and cadmiums, fusing point is at 47-200 DEG C, fusing point can be allocated as required, the fields such as electrical equipment, steam, fire-fighting, fire alarm are widely used in, for the heating of detecting electric device junction provides new foundation; The advantage of fusible alloy is: fusing point standard, narrow range, be quick on the draw, the thawing time is short.
Known by retrieving, having not yet to see a kind of take fusible alloy as examination adiabator, and can the report of electrical equipment lug wire temperature measuring equipment of charged mounting or dismounting.
Summary of the invention
The object of the present invention is to provide that one can replace temperature display wax sheet, performance is more stable, and fusing point can adjust as required, the electrical equipment lug wire temperature measuring equipment that adopts fusible alloy to make.
In order to reach above object, the technical solution adopted in the present invention is: the electrical equipment lug wire temperature measuring equipment that this employing fusible alloy makes, comprise arc elastic intermediate plate, a left side established by arc elastic intermediate plate, right two panels, left, the middle part of right two panels arc elastic intermediate plate contacts, left, dehisce in the top of right two panels arc elastic intermediate plate, by a left side, the top of right two panels arc elastic intermediate plate dehisces to snap in electrical equipment lug wire, it is characterized in that: a described left side, the lower end of right two panels arc elastic intermediate plate is equipped with radius bend section, be provided with in radius bend section and make a left side, the wind spring of the lower end jaws clamping of right two panels arc elastic intermediate plate, the axle head of wind spring is fixed by back up pad and circular seat board, inwardly extrude a left side by two wind springs simultaneously, the lower end jaws of right two panels arc elastic intermediate plate, just electrical equipment lug wire can be clamped, make it on a left side, the lower end jaws internal fixtion of right two panels arc elastic intermediate plate is firm, the overtemperature mark cylinder connected as one is provided with in the middle part of the base surface of described circular seat board, the sheathed tubular sealing cap in outside of overtemperature mark cylinder, the cavity heights of tubular sealing cap is consistent with the length of overtemperature mark cylinder, in normal state, tubular sealing cap sealing cover, in the outside of overtemperature mark cylinder, can not observe overtemperature mark cylinder, the base plate center of described tubular sealing cap is provided with the core bar of the threaded head be fixed as one, sheathed Compress Spring on core bar, the central through hole of circular seat board is passed in the upper end of core bar, in the upper end of core bar through the sheathed fusible alloy ring in position of central through hole of circular seat board, then tighten heat conduction nut in the upper end of core bar and fix, the diameter of described circular seat board central through hole is greater than the overall diameter of heat conduction nut, is less than the overall diameter of fusible alloy ring, by the stop of fusible alloy ring, prevents heat conduction nut from deviating from from the central through hole of circular seat board downwards, electrical equipment lug wire is touched in the upper end of described heat conduction nut, electrical equipment lug wire heating temp passes to molten alloy hoop by heat conduction nut, when reaching the fusing point of fusible alloy ring, fusible alloy ring melts, no longer stop that heat conduction nut is deviate from from the central through hole of circular seat board, so, under the effect of Compress Spring, heat conduction nut is just deviate from downwards from the central through hole of circular seat board, tubular sealing cap is ejected downwards simultaneously, no longer capping overtemperature mark cylinder, overtemperature mark cylinder exposes, just this electrical equipment lug wire place temperature is pointed out to exceed the temperature of fusible alloy ring setting.
The present invention is also implemented by following measure: described fusible alloy ring is the one in fifty percent point of eutectic alloy or Lipowitz's alloy, selects that different proportionings is molten mixedly to be made by Bi, pb, Sn, Cd; The fusing point of fifty percent point of described eutectic alloy is 46.7 DEG C, is applicable to thermometric in winter; The fusing point of described Lipowitz's alloy is 70 DEG C, is applicable to thermometric in summer.
Arc convex is provided with, to increase the contact area of arc elastic intermediate plate and electrical equipment lug wire inside the lower end jaws of described arc elastic intermediate plate.
The lateral wall to the radius bend section of arc elastic intermediate plate lower end is supported in the outer end of described wind spring, and the madial wall to the radius bend section of arc elastic intermediate plate lower end is supported in the inner of described wind spring, the outer end of wind spring and the inner swelling state be in both sides.
The end opening of described overtemperature mark cylinder is provided with opening's edge of turning up; Described tubular sealing cap suitable for reading is provided with interiorly buckles opening's edge.
The outer wall of described overtemperature mark cylinder scribbles red paint, to serve as warning.
The diapire both sides of described tubular sealing cap are provided with the mounting bar suitable with transformer substation grounding wire insulating bar installing port, and the overall diameter of tubular sealing cap and the interior diameter of transformer substation grounding wire insulating bar installing port adapt; Described tubular sealing cap is that aluminum alloy materials is made, with weight reduction.
Beneficial effect of the present invention is: the electrical equipment lug wire temperature measuring equipment that this employing fusible alloy makes, compared with current temperature display wax sheet, can not only install under the situation of high-tension transformation equipment charging operation, and owing to have employed fusible alloy as examination adiabator, so there is fusing point standard, narrow range, be quick on the draw, advantage that the thawing time is short, and fusing point according to seasonal adjustment, can reject the impact that nature heats up, failure judgement heats up more accurately; Owing to have employed arc elastic intermediate plate holding electrical device junction wire, so install easily; Owing to have employed whether closing of the control overtemperature mark cylinder of fusible alloy, thus use flexibly, convenient, and the warning function of overtemperature mark cylinder is obvious, effectively avoids other examination adiabator and need 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.
Accompanying drawing explanation
Fig. 1 is that enlarged diagram is analysed and observe by structure office of the present invention.
In figure: 1, arc elastic intermediate plate; 2, electrical equipment lug wire; 3, wind spring; 4, circular seat board; 5, radius bend section; 6, overtemperature mark cylinder; 7, tubular sealing cap; 8, core bar; 9, Compress Spring; 10, central through hole; 11, fusible alloy ring; 12, heat conduction nut; 13, arc convex; 14, back up pad; 15, to turn up opening's edge; 16, interior button opening's edge; 17, mounting bar.
Embodiment
The electrical equipment lug wire temperature measuring equipment that this employing fusible alloy makes, comprise arc elastic intermediate plate 1, a left side established by arc elastic intermediate plate 1, right two panels, left, the middle part of right two panels arc elastic intermediate plate 1 contacts, left, dehisce in the top of right two panels arc elastic intermediate plate 1, by a left side, the top of right two panels arc elastic intermediate plate 1 dehisces to snap in electrical equipment lug wire 2, it is characterized in that: a described left side, the lower end of right two panels arc elastic intermediate plate 1 is equipped with radius bend section 5, be provided with in radius bend section 5 and make a left side, the wind spring 3 of the lower end jaws clamping of right two panels arc elastic intermediate plate 1, the axle head of wind spring 3 is fixed by back up pad 14 and circular seat board 4, inwardly extrude a left side by two wind springs 3 simultaneously, the lower end jaws of right two panels arc elastic intermediate plate 1, just electrical equipment lug wire 2 can be clamped, make it on a left side, the lower end jaws internal fixtion of right two panels arc elastic intermediate plate 1 is firm, can not come off because of circular seat board 4 and the parts self gravitation factor connected thereof, or loose contact, the overtemperature mark cylinder 6 connected as one is provided with in the middle part of the base surface of described circular seat board 4, the sheathed tubular sealing cap 7 in outside of overtemperature mark cylinder 6, the cavity heights of tubular sealing cap 7 is consistent with the length of overtemperature mark cylinder 6, in normal state, tubular sealing cap 7 sealing cover, in the outside of overtemperature mark cylinder 6, can not observe 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 be fixed as one, sheathed Compress Spring 9 on core bar 8, the central through hole 10 of circular seat board 4 is passed in the upper end of core bar 8, in the upper end of core bar 8 through the sheathed fusible alloy ring 11 in position of the central through hole 10 of circular seat board 4, then tighten heat conduction nut 12 in the upper end of core bar 8 fixing, the diameter of described circular seat board 4 central through hole 10 is greater than the overall diameter of heat conduction nut 12, is less than the overall diameter of fusible alloy ring 11, by the stop of fusible alloy ring 11, prevents heat conduction nut 12 from deviating from from the central through hole 10 of circular seat board 4 downwards, electrical equipment lug wire 2 is touched in the upper end of described heat conduction nut 12, electrical equipment lug wire 2 heating temp passes to molten alloy hoop 11 by heat conduction nut 12, when reaching the fusing point of fusible alloy ring 11, fusible alloy ring 11 melts, no longer stop that heat conduction nut 12 is deviate from from the central through hole 10 of circular seat board 4, so, under the effect of Compress Spring 9, heat conduction nut 12 is just deviate from downwards from the central through hole 10 of circular seat board 4, tubular sealing cap 7 is ejected downwards simultaneously, no longer capping overtemperature mark cylinder 6, overtemperature mark cylinder 6 exposes, just this electrical equipment lug wire 2 place temperature is pointed out to exceed the temperature of fusible alloy ring 11 setting, can judge that this place exists heating defect, need to process immediately.
As improvement of the present invention: described fusible alloy ring 11 is the one in fifty percent point of eutectic alloy or Lipowitz's alloy, select that different proportionings is molten mixedly to be made by Bi, pb, Sn, Cd; The fusing point of fifty percent point of described eutectic alloy is 46.7 DEG C, is applicable to thermometric in winter; The fusing point of described Lipowitz's alloy is 70 DEG C, is applicable to thermometric in summer.
Arc convex 13 is provided with, to increase the contact area of arc elastic intermediate plate 1 and electrical equipment lug wire 2 inside the lower end jaws of described arc elastic intermediate plate 1.
The lateral wall to the radius bend section 5 of arc elastic intermediate plate 1 lower end is supported in the outer end of described wind spring 3, and the madial wall to the radius bend section 5 of arc elastic intermediate plate 1 lower end is supported in the inner of described wind spring 3, the outer end of wind spring 3 and the inner swelling state be in both sides.
The end opening of described overtemperature mark cylinder 6 is provided with opening's edge 15 of turning up; Described tubular sealing cap 7 suitable for reading is provided with interiorly buckles opening's edge 16, when tubular sealing cap 7 comes off downwards, when buckle in tubular sealing cap 7 opening's edge 16 drop down onto overtemperature mark cylinder 6 turn up opening's edge 15 time, just stop because being obstructed.
The outer wall of described overtemperature mark cylinder 6 scribbles red paint, to serve as warning.
The diapire both sides of described tubular sealing cap 7 are provided with the mounting bar 17 suitable with transformer substation grounding wire insulating bar installing port, the overall diameter of tubular sealing cap 7 and the interior diameter of transformer substation grounding wire insulating bar installing port adapt, after bottom the axially open that mounting bar 17 enters transformer substation grounding wire insulating bar installing port, tubular sealing cap 7 enters in transformer substation grounding wire insulating bar installing port, by the rotation of transformer substation grounding wire insulating bar, mounting bar 17 can be made to enter in the transverse opening of transformer substation grounding wire insulating bar installing port, thus tubular sealing cap 7 is fixed, realize handling of the present invention, described tubular sealing cap 7 is made, with weight reduction for aluminum alloy materials.
When using of the present invention, operation maintenance personnel picks up special transformer substation grounding wire insulating bar, clamp tubular sealing cap 7, near installing temperature indicating position, make the top jaws contact electrical equipment lug wire 2 of arc elastic intermediate plate 1, operation maintenance personnel is exerted oneself rapidly, electrical equipment lug wire 2 can snap in the lower end jaws of arc elastic intermediate plate 1, make electrical equipment lug wire 2 touch heat conduction nut 12 simultaneously, under the effect of wind spring 3, electrical equipment lug wire 2 is clamped, then rotates transformer substation grounding wire insulating bar, transformer substation grounding wire insulating bar is fetched.In like manner, reverse operating, can take off this electrical equipment joint temperature measuring equipment.
Claims (6)
1. adopt the electrical equipment lug wire temperature measuring equipment that fusible alloy makes, comprise arc elastic intermediate plate (1), a left side established by arc elastic intermediate plate (1), right two panels, left, the middle part of right two panels arc elastic intermediate plate (1) contacts, left, dehisce in the top of right two panels arc elastic intermediate plate (1), it is characterized in that: a described left side, the lower end of right two panels arc elastic intermediate plate (1) is equipped with radius bend section (5), be provided with in radius bend section (5) and make a left side, the wind spring (3) of the lower end jaws clamping of right two panels arc elastic intermediate plate (1), the axle head of wind spring (3) is fixed by back up pad (14) and circular seat board (4), be provided with the overtemperature mark cylinder (6) connected as one in the middle part of the base surface of described circular seat board (4), the sheathed tubular sealing cap (7) in outside of overtemperature mark cylinder (6), the cavity heights of tubular sealing cap (7) is consistent with the length of 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 be fixed as one, at the upper sheathed Compress Spring (9) of core bar (8), the central through hole (10) of circular seat board (4) is passed in the upper end of core bar (8), in the upper end of core bar (8) through the sheathed fusible alloy ring (11) in position of the central through hole (10) of circular seat board (4), then tighten heat conduction nut (12) in the upper end of core bar (8) fixing, the diameter of described circular seat board (4) central through hole (10) is greater than the overall diameter of heat conduction nut (12), is less than the overall diameter of fusible alloy ring (11), electrical equipment lug wire (2) is touched in the upper end of described heat conduction nut (12), and electrical equipment lug wire (2) heating temp passes to molten alloy hoop (11) by heat conduction nut (12).
2. the electrical equipment lug wire temperature measuring equipment that makes of employing fusible alloy according to claim 1, is characterized in that: described fusible alloy ring (11) is the one in fifty percent point of eutectic alloy or Lipowitz's alloy; The fusing point of fifty percent point of described eutectic alloy is 46.7 DEG C; The fusing point of described Lipowitz's alloy is 70 DEG C.
3. the electrical equipment lug wire temperature measuring equipment of employing fusible alloy making according to claim 1, is characterized in that: be provided with arc convex (13) inside the lower end jaws of described arc elastic intermediate plate (1).
4. the electrical equipment lug wire temperature measuring equipment of employing fusible alloy making according to claim 1, it is characterized in that: the lateral wall to the radius bend section (5) of arc elastic intermediate plate (1) lower end is supported in the outer end of described wind spring (3), the madial wall to the radius bend section (5) of arc elastic intermediate plate (1) lower end is supported in the inner of described wind spring (3).
5. the electrical equipment lug wire temperature measuring equipment of employing fusible alloy making according to claim 1, is characterized in that: the end opening of described overtemperature mark cylinder (6) is provided with opening's edge of turning up (15); Described tubular sealing cap (7) suitable for reading is provided with interiorly buckles opening's edge (16).
6. the electrical equipment lug wire temperature measuring equipment of employing fusible alloy making according to claim 1, the diapire both sides of described tubular sealing cap (7) are provided with the mounting bar (17) suitable with transformer substation grounding wire insulating bar installing port, and the overall diameter of tubular sealing cap (7) and the interior diameter of transformer substation grounding wire insulating bar installing port adapt.
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 |
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| 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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| CN104655314A true CN104655314A (en) | 2015-05-27 |
| CN104655314B CN104655314B (en) | 2017-05-24 |
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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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Cited By (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 |
| CN105466593A (en) * | 2015-12-03 | 2016-04-06 | 宁波澳玛特高精冲压机床股份有限公司 | Crankshaft temperature monitoring system, crankshaft temperature monitoring method, and punch press |
| CN105758536A (en) * | 2016-05-04 | 2016-07-13 | 国网山东省电力公司莱芜供电公司 | Temperature measurement alarming device for electrical equipment jointing clamp |
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 |
Non-Patent Citations (3)
| Title |
|---|
| 张李冬: "《过程控制技术及其应用》", 31 January 2004, 机械工业出版社 * |
| 徐鹤生: "《建筑消防系统》", 31 January 2010, 高等教育出版社 * |
| 黄芝庭: "《建筑消防设备和防火材料手册》", 31 August 1990 * |
Cited By (5)
| 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 |
| CN105466593A (en) * | 2015-12-03 | 2016-04-06 | 宁波澳玛特高精冲压机床股份有限公司 | Crankshaft temperature monitoring system, crankshaft temperature monitoring method, and punch press |
| 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 |
| CN105758536A (en) * | 2016-05-04 | 2016-07-13 | 国网山东省电力公司莱芜供电公司 | Temperature measurement alarming device for electrical equipment jointing clamp |
| 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 |
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