CN103779842A - Low-voltage switch equipment drawer unit contact temperature monitoring device - Google Patents
Low-voltage switch equipment drawer unit contact temperature monitoring device Download PDFInfo
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- CN103779842A CN103779842A CN201410030162.XA CN201410030162A CN103779842A CN 103779842 A CN103779842 A CN 103779842A CN 201410030162 A CN201410030162 A CN 201410030162A CN 103779842 A CN103779842 A CN 103779842A
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- Prior art keywords
- drawer unit
- low voltage
- voltage switchgear
- temperature
- temperature controller
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
- H02B1/34—Racks
- H02B1/36—Racks with withdrawable units
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Gas-Insulated Switchgears (AREA)
- Distribution Board (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a low-voltage switch equipment drawer unit contact temperature monitoring device which comprises a temperature sensor, a temperature controller and a moulded case circuit breaker. The temperature sensor is connected with the temperature controller through a transmission line, the temperature controller is electrically connected with a release on the moulded case circuit breaker, the moulded case circuit breaker is connected to an enter line of a low-voltage switch equipment drawer unit, and the temperature sensor is connected with an enter line moving contact or an outgoing line moving contact of the low-voltage switch equipment drawer unit. The low-voltage switch equipment drawer unit contact temperature monitoring device can monitor the temperature of contacts in real time, and primary loop currents can be cut off when temperature is abnormal.
Description
Technical field
The present invention relates to power transmission and distribution technical field, relate in particular to a kind of low voltage switchgear drawer unit contact temperature supervising device.
Background technology
Low voltage switchgear transmission line circuit adopts drawer unit structure, has and overhauls conveniently, changes the advantages such as quick; But, also there is following defect: drawer unit is limit because of structure, and the contact condition of webge contact can not directly be observed, potential faults can not find in time, low pressure drawer-type switchgear operational reliability can not be guaranteed; In the time of real work, the inlet wire moving contact after grafting and outlet moving contact are owing to being in enclosure space, and operations staff can not directly check its operating state, and in switchgear life cycle, inlet wire moving contact, outlet moving contact need experience thousands of plugs.Its grafting mated condition can be because of reasons such as parts wear, inefficacy and personnel's misoperations, there is conductor contact bad phenomenon, and then cause that contact resistance enlarges markedly, cause webge contact temperature rise heating, when serious, cause that switchgear burning damages, this situation is particularly outstanding in large electric current drawer unit, as drawer unit more than rated current 400A; Through investigation, in the time that drawer unit rated current is greater than 400A, webge contact temperature rise is too high is drawer unit major failure factor.
Summary of the invention
The present invention aims to provide a kind of low voltage switchgear drawer unit contact temperature supervising device, can monitor in real time contact temperature, and can in the time of temperature anomaly, cut off primary circuit electric current.
Technical scheme of the present invention is: a kind of low voltage switchgear drawer unit contact temperature supervising device, comprises temperature sensor, temperature controller, breaker of plastic casing; Described temperature sensor connects temperature controller by transfer wire, the release electrical connection on described temperature controller and breaker of plastic casing; Described breaker of plastic casing is connected on the inlet wire of low voltage switchgear drawer unit, and described temperature sensor is connected with inlet wire moving contact or the outlet moving contact of low voltage switchgear drawer unit.
Preferably, inlet wire, the outlet of described low voltage switchgear drawer unit are three-phase, and described temperature sensor has 6.
Further, described temperature sensor is plug-in type temperature sensor, comprising: transition plate, grafting sensing head, thermocouple, draw wire; The front end of described transition plate connects inlet wire moving contact or outlet moving contact, and the rear end of transition plate is connected with grafting sensing head, and described thermocouple is inlaid in grafting sensing head, thermocouple is by drawing wire, transfer wire connection temperature controller.
Further, described transition plate rear end, grafting sensing head are respectively arranged with suitable spill or convex gathering sill, are also provided with the positioning boss for the time location of pegging graft.
Preferably, described temperature controller comprises display screen, button and audible-visual annunciator is set.
Further, a pair of normally opened contact of described temperature controller is connected in the connection circuit of release of breaker of plastic casing.
Preferably, described transition plate front end is provided with through hole, and the aperture of described through hole is 10,12,14 or 16 millimeters.
Preferably, described temperature controller is arranged on low voltage switchgear drawer unit panel, can show in real time contact temperature, is not extracting out in drawer unit situation, and operations staff can directly read contact temperature parameter.
Preferably, described temperature controller includes RS485 communication interface; Contact temperature parameter can be transferred to background system, by background system detection contact temperature, and can carry out historical record to contact temperature parameter.
Low voltage switchgear drawer unit contact temperature supervising device provided by the invention, can monitor in real time contact temperature, and can in the time of temperature anomaly, cut off primary circuit electric current, avoid contact to burn because of excess Temperature, guarantee the security of operation of low voltage switchgear. it is convenient to observe, less operating cost and maintenance capacity, have good Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is plug-in type temperature sensor schematic diagram;
Fig. 4 is electrical schematic diagram of the present invention;
In figure: 1-vertical bus cover, 2-vertical bus, 3-inlet wire moving contact, 4-temperature sensor, 5-line nose, 6-breaker of plastic casing, 7-drawer unit, 8-outlet static socket, 9-tank bracket, 10-outlet moving contact, 11-current transformer, 12-transfer wire, 13-temperature controller, 14-vertical bus clamp, 15-securing member, cable of 16-, 17-transition plate, 18-grafting sensing head, 19-thermocouple, 20-draws wire, 21-gathering sill, 22-positioning boss, 61-release.
Specific embodiments
As shown in Figure 1 and Figure 2, in low voltage switchgear drawer unit, vertical bus 2 is inlet wire backbone, accepts electric current by inlet wire moving contact 3, by cable 16, breaker of plastic casing 6, current transformer 11, outlet moving contact 10, finally by crossing outlet static socket 8, current delivery is gone out again; Vertical bus 2 is fixed on tank bracket 18 by vertical bus clamp 12, and outlet static socket 8 is directly fixed on tank bracket.Vertical bus 2 is enclosed in a small space by vertical bus cover 1, and outlet static socket 8 carries conductor enclosure space, and above-mentioned two kinds of versions have guaranteed the degree of protection of switchgear.Inlet wire moving contact 3 is pegged graft with vertical bus 2, and outlet moving contact 10 is pegged graft with outlet static socket 8, is electrically connected by the way, carries electric current.
Low voltage switchgear drawer unit contact temperature supervising device disclosed by the invention, comprises temperature sensor 4, temperature controller 13, breaker of plastic casing 6; Temperature sensor 4 connects temperature controller 13 by transfer wire 12, and temperature controller 13 is electrically connected with the release 61 on breaker of plastic casing 6, and temperature sensor 4 is connected with inlet wire moving contact 3 or the outlet moving contact 10 of low voltage switchgear drawer unit 7; Inlet wire, the outlet of low voltage switchgear drawer unit 7 are three-phase, and corresponding, temperature sensor 4 has 6.
As shown in Figure 3, Figure 4, temperature sensor 4 is plug-in type temperature sensor, comprises transition plate 17, grafting sensing head 18, thermocouple 19, draws wire 20.The front end of transition plate 17 connects inlet wire moving contact 3 or outlet moving contact 19, and transition plate 17 front ends are provided with through hole, and transition plate 17 is linked together by this through hole and inlet wire moving contact 3, outlet moving contact 10, line nose 5, securing member 15.The aperture of through hole can be selected several specifications such as 10,12,14 or 16 millimeters conventionally, with the conventional securing member size of adaptation.Transition plate 17 rear ends, grafting sensing head 18 are respectively arranged with suitable spill or convex gathering sill.Transition plate 17 rear ends, grafting sensing head 18 are connected after coordinating by above-mentioned spill and 21 grafting of convex gathering sill.In gathering sill 21, be also provided with the positioning boss 22 for the time location of pegging graft, put in place to guarantee to peg graft, connect reliable.Thermocouple 19 is inlaid in grafting sensing head 18, and with grafting sensing head 18 close contacts.Thermocouple 19 connects the input of temperature controller 13 by drawing wire 20, transfer wire 12.Plug-in type temperature sensor and the connected mode of this form, can guarantee that temperature sensor contacts well with tested inlet wire moving contact 3 or outlet moving contact 10, and temperature sense is accurate.Temperature controller 13 is selected has the temperature controller that temperature shows, threshold temperature arranges functional harmony light crossing-signal.Temperature controller 13 is arranged on the panel of low voltage switchgear drawer unit 7, facilitates staff to carry out threshold temperature setting to temperature controller.Contact temperature rise is during lower than the 55K of standard regulation, temperature controller 13 displays temperatures, and in the time that contact temperature is above standard the threshold value of regulation, temperature controller is by display alarm signal.Temperature controller 13 and release 61 all adopt the operating voltage of alternating current 220V, are provided with protective tube FU in the current supply circuit of temperature controller 13.The a pair of normally opened contact of temperature controller 13 is connected in the connection circuit of release 61 of breaker of plastic casing 6, in the time that contact temperature is greater than 150 ℃, the normally opened contact closure of temperature controller 13 inside, breaker of plastic casing 6 releases 61 move, make breaker of plastic casing 6 disjunctions, thereby cut off the primary conductive loop in drawer unit 7, avoid further temperature rise to cause equipment catastrophe failure.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. a low voltage switchgear drawer unit contact temperature supervising device, is characterized in that: comprise temperature sensor (4), temperature controller (13), breaker of plastic casing (6); Described temperature sensor (4) connects temperature controller (13) by transfer wire (12), described temperature controller (13) is electrically connected with the release (61) on breaker of plastic casing (6), described breaker of plastic casing (6) is connected on the inlet wire of low voltage switchgear drawer unit (7), and described temperature sensor (4) is connected with inlet wire moving contact (3) or the outlet moving contact (10) of low voltage switchgear drawer unit (7).
2. low voltage switchgear drawer unit contact temperature supervising device according to claim 1, is characterized in that: inlet wire, the outlet of described low voltage switchgear drawer unit (7) are three-phase, and described temperature sensor (4) has 6.
3. low voltage switchgear drawer unit contact temperature supervising device according to claim 1, it is characterized in that: described temperature sensor (4) is plug-in type temperature sensor, comprises transition plate (17), grafting sensing head (18), thermocouple (19), draws wire (20); The front end of described transition plate (17) connects inlet wire moving contact (3) or outlet moving contact (10), the rear end of transition plate (17) is connected with grafting sensing head (18), described thermocouple (19) is inlaid in grafting sensing head (18), thermocouple (19) by drawing wire (20), transfer wire (12) connects temperature controller (11).
4. low voltage switchgear drawer unit contact temperature supervising device according to claim 3, it is characterized in that: described transition plate (17) rear end, grafting sensing head (18) are respectively arranged with suitable spill or convex gathering sill (21), be also provided with the positioning boss (22) for the time location of pegging graft.
5. low voltage switchgear drawer unit contact temperature supervising device according to claim 1, is characterized in that: described temperature controller (13) comprises display screen, button and audible-visual annunciator are set.
6. low voltage switchgear drawer unit contact temperature supervising device according to claim 5, is characterized in that: a pair of normally opened contact of described temperature controller (13) is connected in the connection circuit of release (61) of breaker of plastic casing (6).
7. low voltage switchgear drawer unit contact temperature supervising device according to claim 3, is characterized in that: described transition plate (17) front end is provided with through hole, and the aperture of described through hole is 10,12,14 or 16 millimeters.
8. low voltage switchgear drawer unit contact temperature supervising device according to claim 5, is characterized in that: described temperature controller (13) is arranged on the panel of low voltage switchgear drawer unit (7).
9. low voltage switchgear drawer unit contact temperature supervising device according to claim 5, is characterized in that: described temperature controller (13) includes RS485 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030162.XA CN103779842B (en) | 2014-01-22 | 2014-01-22 | low-voltage switch equipment drawer unit contact temperature monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030162.XA CN103779842B (en) | 2014-01-22 | 2014-01-22 | low-voltage switch equipment drawer unit contact temperature monitoring device |
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| CN103779842A true CN103779842A (en) | 2014-05-07 |
| CN103779842B CN103779842B (en) | 2017-01-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332964A (en) * | 2014-11-26 | 2015-02-04 | 哈尔滨理工大学 | Over-temperature protection device of plug type breaker and based on direct temperature measurement |
| CN104466774A (en) * | 2014-12-31 | 2015-03-25 | 盛道（中国）电气有限公司 | Low-voltage switching cabinet with 1/2 drawing-out type functional units |
| CN107643128A (en) * | 2016-07-22 | 2018-01-30 | 巴斯威尔股份有限公司 | Breaker temperature sensing warning shade and the breaker assembly for having the shade |
| CN108663140A (en) * | 2018-06-26 | 2018-10-16 | 上海良信电器股份有限公司 | Breaker temperature harvester mounting structure |
| CN109443594A (en) * | 2018-10-31 | 2019-03-08 | 马鞍山市永运家纺有限公司 | A kind of automatic detection alarm device of experimental branch line cryogenic temperature |
| CN112924861A (en) * | 2021-01-28 | 2021-06-08 | 国网宁夏电力有限公司培训中心 | Capacitor switching circuit breaker state monitoring method |
| CN113551804A (en) * | 2020-04-03 | 2021-10-26 | 首瑞（天津）电气设备有限公司 | Switch integrated system |
| CN115642567A (en) * | 2022-11-07 | 2023-01-24 | 黑龙江科技大学 | Circuit electric appliance protection method, device, equipment and storage medium |
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| CN201130851Y (en) * | 2007-05-19 | 2008-10-08 | 山东金宇轮胎有限公司 | Automatic safety device for low-voltage drawer switch cabinet |
| CN102315601A (en) * | 2011-05-09 | 2012-01-11 | 昌华电气设备集团有限公司 | Low-voltage draw-out intelligent distribution switch cabinet |
| CN203660521U (en) * | 2014-01-22 | 2014-06-18 | 四川达卡电气有限公司 | Low pressure switch equipment drawer unit contact temperature supervising device |
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2014
- 2014-01-22 CN CN201410030162.XA patent/CN103779842B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201130851Y (en) * | 2007-05-19 | 2008-10-08 | 山东金宇轮胎有限公司 | Automatic safety device for low-voltage drawer switch cabinet |
| CN102315601A (en) * | 2011-05-09 | 2012-01-11 | 昌华电气设备集团有限公司 | Low-voltage draw-out intelligent distribution switch cabinet |
| CN203660521U (en) * | 2014-01-22 | 2014-06-18 | 四川达卡电气有限公司 | Low pressure switch equipment drawer unit contact temperature supervising device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332964A (en) * | 2014-11-26 | 2015-02-04 | 哈尔滨理工大学 | Over-temperature protection device of plug type breaker and based on direct temperature measurement |
| CN104332964B (en) * | 2014-11-26 | 2018-04-24 | 哈尔滨理工大学 | Plug-pull type breaker overtemperature protection system based on direct temperature detection |
| CN104466774A (en) * | 2014-12-31 | 2015-03-25 | 盛道（中国）电气有限公司 | Low-voltage switching cabinet with 1/2 drawing-out type functional units |
| CN107643128A (en) * | 2016-07-22 | 2018-01-30 | 巴斯威尔股份有限公司 | Breaker temperature sensing warning shade and the breaker assembly for having the shade |
| CN108663140A (en) * | 2018-06-26 | 2018-10-16 | 上海良信电器股份有限公司 | Breaker temperature harvester mounting structure |
| CN109443594A (en) * | 2018-10-31 | 2019-03-08 | 马鞍山市永运家纺有限公司 | A kind of automatic detection alarm device of experimental branch line cryogenic temperature |
| CN113551804A (en) * | 2020-04-03 | 2021-10-26 | 首瑞（天津）电气设备有限公司 | Switch integrated system |
| CN112924861A (en) * | 2021-01-28 | 2021-06-08 | 国网宁夏电力有限公司培训中心 | Capacitor switching circuit breaker state monitoring method |
| CN115642567A (en) * | 2022-11-07 | 2023-01-24 | 黑龙江科技大学 | Circuit electric appliance protection method, device, equipment and storage medium |
| CN115642567B (en) * | 2022-11-07 | 2024-04-05 | 黑龙江科技大学 | Circuit electrical appliance protection method, device, equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN103779842B (en) | 2017-01-18 |
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