CN102136715B - Passive ground wire ice-melting controller - Google Patents
Passive ground wire ice-melting controller Download PDFInfo
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- CN102136715B CN102136715B CN 201110025638 CN201110025638A CN102136715B CN 102136715 B CN102136715 B CN 102136715B CN 201110025638 CN201110025638 CN 201110025638 CN 201110025638 A CN201110025638 A CN 201110025638A CN 102136715 B CN102136715 B CN 102136715B
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- ice
- ground wire
- temperature
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- insulation shell
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Abstract
The invention discloses a passive ground wire ice-melting controller comprising an insulated shell. A bellow sealing air cavity or a temperature-sensitive telescopic bimetal lamination, a piston, a pair of movable contacts, a spring and a pair of static contacts are coaxially and sequentially arranged in the insulated shell. By adopting the bellow sealing air cavity or the temperature-sensitive telescopic bimetal lamination, the ground wire ice-melting controller generates an expansion acting force at a high temperature to switch on the movable contacts and the static contacts of a control switch and shrinks at a low temperature to switch off the movable contacts and the static contacts. Accordingly, the ground wire floats on the ground at a lower temperature in winter so that the ice-melting of the ground wire is conveniently realized, recovers a grounding state in a high-temperature season and is convenient for the lightningproof operation of the transmission line. The ground wire ice-melting controller has the control capability with temperature variance by utilizing the material characteristics, does not need a control power supply, has a simple structure and is easy to realize and use.
Description
Technical field
The present invention relates to passive temperature detect switch (TDS), be applicable to the ice-melt control on electric power system overhead ground wire road, grounded circuit broken off during ice-melt in the winter time and carry out the ice-melt operation, reply conducting state summer and be used to take shelter from the thunder by ambient temperature control ground wire grounding loop break-make.
Background technology
Great ice and snow disaster can make many times open-air overhead transmission lines such as 220kV, 500kV icing on a large scale, and the circuit gravitational load is excessive, causes many times shaft towers to cave in, and power failure also can't be recovered for a long time.The ice and snow disaster can cause utmost point ill effect to electric power system transmission of electricity safety, causes heavy economic losses.
The influence of ice and snow disaster is mainly aspect insulation and two of circuit gravity laods: 1) during covering ice for insulator, can cause line-to-ground short circuit, make power failure; 2) the gravity laod increase strengthens sag during the serious icing of circuit, can cause shaft tower both sides unbalance stress when serious, causes lodging.In addition, the variation of sag also can influence between lightning conducter and circuit, the multiloop circuit, the safe distance of line-to-ground etc.
The ice and snow disaster can't be eliminated usually in a short time voluntarily, must carry out artificial deicing and just can restore electricity.At present, when shaft tower does not lodge, can adopt special-purpose ice-melt power supply that transmission line is carried out ice-melt, and under the prerequisite that conditions such as insulation satisfy, can shorten failure recovery time.But this de-icing method can't be handled insulator and lightning conducter icing.
Summary of the invention
The objective of the invention is for solving the lightning wire deicing problem, a kind of passive type lightning wire deicing controller by ambient temperature control ground wire grounding loop break-make is provided.
Passive type lightning wire deicing controller of the present invention comprises insulation shell; The interior coaxial line of insulation shell device successively has sylphon seal air cavity or the flexible bimetallic lamination of thalposis; Piston, a pair of moving contact, spring and a pair of fixed contact; One end of piston is connected with sylphon seal air cavity end face or the flexible bimetallic lamination end face of thalposis, and the other end of piston links to each other with moving contact, and a pair of fixed contact that is fixed on the insulation shell links to each other with lower terminal with the outer upper terminal of insulation shell respectively; One end of spring links to each other with moving contact, and the other end of spring props up the insulation shell end face.
Beneficial effect of the present invention is:
The characteristics that passive type lightning wire deicing controller of the present invention utilizes seasonal temperature to change; Adopt sylphon seal air cavity or bimetallic lamination; At high temperature produce expansion power, make the dynamic and static contact closure of control switch, contraction is cut-off dynamic and static contact at low temperatures.Like this, lightning conducter is moved during low temperature in the winter time floatingly, be convenient to lightning wire deicing.And recover ground state at high temperature season, be convenient to transmission line lightning protection operation.Controller utilizes material behavior, cooperates appropriate structural design, forms to have temperature variant control ability.Device need not controlled power supply, and simple in structure being easy to realized and used.
Description of drawings
Fig. 1 is the structural representation that adopts the passive type lightning wire deicing controller of sylphon seal air cavity.
Fig. 2 is the structural representation that adopts the passive type lightning wire deicing controller of the flexible bimetallic lamination of thalposis.
Embodiment
With reference to Fig. 1; Passive type lightning wire deicing controller comprises insulation shell 1; Insulation shell 1 interior coaxial line device successively has sylphon seal air cavity 2, piston 3, a pair of moving contact 5, spring 4 and a pair of fixed contact 6, and an end of piston 3 is connected with sylphon seal air cavity end face; The other end of piston 3 links to each other with moving contact 5; The a pair of fixed contact 6 that is fixed on the insulation shell links to each other with lower terminal 8 with the outer upper terminal 7 of insulation shell respectively, and an end of spring 4 links to each other with moving contact 5, and the other end of spring 4 props up the insulation shell end face.Under spring action, can guarantee that moving contact reaches balance with the temperature height at diverse location.
Operation principle is following:
On the earth connection of every lightning conducter of actual transmission line, a passive type lightning wire deicing controller is installed all, the upper terminal of ice-melt controller is connected with lightning conducter, and lower terminal is connected with earth connection.During the winter ice-melt, the ripple sealed air-space in the ice-melt controller shrinks at low temperatures, and dynamic and static contact is cut-off, and then lightning conducter and earth connection disconnection moves lightning conducter floatingly.When like transmission line two lightning conducters being arranged, add the ice-melt power supply at an end of two lightning conducters, with the other end short circuit of two lightning conducters, at this moment two lightning conducters and ice-melt power supply constitute the loop, utilize ice melting current to carry out ice-melt.When a lightning conducter only being arranged like transmission line; Can add the ice-melt power supply at an end of a lightning conducter and a power transmission line; With the other end short circuit of lightning conducter and power transmission line, at this moment lightning conducter, power transmission line and ice-melt power supply constitute the loop, utilize ice melting current to carry out ice-melt.During summer high temperature, the ripple sealed air-space in the ice-melt controller at high temperature expands, and dynamic and static contact is connected, and at this moment the ice-melt controller is connected the grounded circuit of lightning conducter, makes the ground wire grounding operation.
Comprise insulation shell 1 with reference to Fig. 2, passive type lightning wire deicing controller; In the insulation shell 1 coaxial line successively device the thalposis bimetallic lamination 2 that stretches is arranged; Piston 3, a pair of moving contact 5, spring 4 and a pair of fixed contact 6; One end of piston 3 is connected with the flexible bimetallic lamination end face of thalposis, and the other end of piston 3 links to each other with moving contact 5, and a pair of fixed contact 6 that is fixed on the insulation shell links to each other with lower terminal 8 with the outer upper terminal 7 of insulation shell respectively; One end of spring 4 links to each other with moving contact 5, and the other end of spring 4 props up the insulation shell end face.
The operation principle of passive type lightning wire deicing controller shown in Figure 2 is with the above.
Claims (1)
1. passive type lightning wire deicing controller; It is characterized in that: comprise insulation shell (1); Wherein, The flexible bimetallic lamination (2) of sylphon seal air cavity or thalposis and piston (3), a pair of moving contact (5), spring (4) and a pair of fixed contact (6) install in insulation shell (1) on the coaxial line successively, and an end of piston (3) and sylphon seal air cavity end face or the thalposis bimetallic lamination end face that stretches is connected, and the other end of piston (3) links to each other with moving contact (5); Said a pair of fixed contact (6) is fixed on the insulation shell; Said a pair of fixed contact (6) links to each other with lower terminal (8) with the outer upper terminal (7) of insulation shell respectively, and an end of spring (4) links to each other with moving contact (5), and the other end of spring (4) props up the insulation shell end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110025638 CN102136715B (en) | 2011-01-24 | 2011-01-24 | Passive ground wire ice-melting controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110025638 CN102136715B (en) | 2011-01-24 | 2011-01-24 | Passive ground wire ice-melting controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102136715A CN102136715A (en) | 2011-07-27 |
| CN102136715B true CN102136715B (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110025638 Expired - Fee Related CN102136715B (en) | 2011-01-24 | 2011-01-24 | Passive ground wire ice-melting controller |
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| CN (1) | CN102136715B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696986A (en) * | 2015-02-26 | 2015-06-10 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Anti-tempering nozzle for combustion chamber of gas turbine |
| CN108512179A (en) * | 2018-06-12 | 2018-09-07 | 国家电网有限公司 | Ground wire deicing device |
| CN112331398B (en) * | 2020-11-02 | 2022-08-02 | 国网安徽省电力有限公司 | Fireproof and heat-resistant power transmission line structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299528A (en) * | 2008-03-12 | 2008-11-05 | 华旭东 | Method for deicing ground wire of high tension overhead transmission line |
| CN101908750A (en) * | 2010-08-06 | 2010-12-08 | 浙江大学 | Self-adaptively grounded lightning wire deicing topology |
| CN202059137U (en) * | 2011-01-24 | 2011-11-30 | 浙江大学 | Passive lightning conductor ice melting controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0662528A (en) * | 1992-03-25 | 1994-03-04 | Ngk Insulators Ltd | Lightning disconnection preventing apparatus |
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2011
- 2011-01-24 CN CN 201110025638 patent/CN102136715B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299528A (en) * | 2008-03-12 | 2008-11-05 | 华旭东 | Method for deicing ground wire of high tension overhead transmission line |
| CN101908750A (en) * | 2010-08-06 | 2010-12-08 | 浙江大学 | Self-adaptively grounded lightning wire deicing topology |
| CN202059137U (en) * | 2011-01-24 | 2011-11-30 | 浙江大学 | Passive lightning conductor ice melting controller |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平6-62528A 1994.03.04 |
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| CN102136715A (en) | 2011-07-27 |
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