CN102522247B - Electromechanical switch for high-voltage high-resistance box - Google Patents
Electromechanical switch for high-voltage high-resistance box Download PDFInfo
- Publication number
- CN102522247B CN102522247B CN201210008892.0A CN201210008892A CN102522247B CN 102522247 B CN102522247 B CN 102522247B CN 201210008892 A CN201210008892 A CN 201210008892A CN 102522247 B CN102522247 B CN 102522247B
- Authority
- CN
- China
- Prior art keywords
- resistance
- electromagnet coil
- voltage
- normally opened
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Relay Circuits (AREA)
Abstract
The invention discloses an electromechanical switch for a high-voltage high-resistance box. The electromechanical switch comprises a rotary switch and a plurality of coil driving units. Each of the plurality of coil driving units comprises an electromagnet coil driving circuit and an electromagnet coil which corresponds to the electromagnet coil driving circuit. The rotary switch controls the turn-on/off of each electromagnet coil driving circuit. Each of a plurality of resistors is connected with a normally open contact. The opening and closing of contacts in the high-voltage high-resistance box can be controlled by the electromagnet coils, so that distances between every two contacts can be increased to further prevent high-voltage air breakdown between the contacts. Therefore, the high voltage resistance of the electromechanical switch for the high-voltage high-resistance box can be effectively improved.
Description
Technical field
The present invention relates to high pressure high resistance fields of measurement, particularly relate to a kind of electromechanical switch for high-voltage high-resistance box.
Background technology
Along with the development of science and technology, also there is change with rapid changepl. never-ending changes and improvements in electric measurement field.
Resistance is the electronic devices and components that electric field is often used.In actual applications, people often need use different resistance and power and can bear high-tension resistance.In order to cost-saving, improve flexibility, people have developed megohm box, can according to the control break resistance value of user.
The resistance that existing a kind of megohm box uses manual rotary switch-mode regulation megohm box external, along with user is to the rotation of adjusting knob, the external resistance of megohm box will change.As shown in Figure 1, comprise in this megohm box: R1-R5 five resistance, when the contact A that user rotates knob is to F contact and with F contact, megohm box is to external resistance, and the resistance namely between Out1 and Out2 is: R1+R2+R3+R4, R5 are shorted.When A point and C point cantact, megohm box is R1 to external resistance.When A point and B point cantact, megohm box is 0 to external resistance.
But, in order to A point can with the contact good contact of other each resistance, between each contact such as A and B, C, interval is very little, and this result also in when the voltage that megohm box applies is higher, and A point just exists air breakdown and the high not phenomenon of insulation resistance between each contact such as B, C.If but widening merely the spacing of contact, then in the process that A point is toward or away to other contacts, can produce electric arc, this will affect the life-span of megohm box breaker in middle.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of electromechanical switch for high-voltage high-resistance box, and to improve the high voltage performance of voltage DC resistance boxes breaker in middle, technical scheme is as follows:
A kind of electromechanical switch for high-voltage high-resistance box, for in voltage DC resistance boxes, described voltage DC resistance boxes comprises multiple resistance, described electromechanical switch for high-voltage high-resistance box comprises: rotary switch and multiple coil drive group, wherein, in described multiple coil drive group, each coil drive group comprises: an electromagnet coil drive circuit and an electromagnet coil corresponding with described electromagnet coil drive circuit, described rotary switch controls the break-make of described electromagnet coil drive circuit, and in described multiple resistance, each resistance is connected with normally opened contact;
Described rotary switch controls the energising of described electromagnet coil drive circuit, electromagnet coil corresponding to this electromagnet coil drive circuit is made to obtain electric, and then the normally opened contact corresponding with this electromagnet coil is closed, make resistance corresponding to the normally opened contact closed with this externally form path.
Preferably, two contacts of described normally opened contact are hemispherical.
Preferably, distance when two contacts of described normally opened contact disconnect is greater than 10mm.
Preferably, the distance between described normally opened contact is greater than 10mm.
Preferably, polyfluortetraethylene plate is provided with between described normally opened contact.
Preferably, described normally opened contact is arranged on ptfe substrate.
Preferably, described electromagnet coil drive circuit comprises: the first switch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the first triode,
Second end of described first resistance is connected with the first end of described first switch, and the second end of described first switch is connected with the first end of described second resistance, the second end ground connection of described second resistance, and the first end of described first resistance is connected with power end;
The first end of described first electric capacity is connected with power end, second end of described first electric capacity is connected with the first end of electromagnet coil, the first end of described 3rd resistance is connected with power end, and the second end of described 3rd resistance is connected with the second end of described first electric capacity;
Second end of described electromagnet coil is connected with the collector electrode of described triode, and the base stage of described triode is connected with the first end of described second resistance, the grounded emitter of described triode.
By applying above technical scheme, the present invention can use electromagnet coil control the disconnection of contact in voltage DC resistance boxes and close, and the distance between such contact just can widen, thus prevents high voltage air breakdown between contact.Therefore, the present invention effectively can improve the high voltage performance of electromechanical switch for high-voltage high-resistance box.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the electrical block diagram of existing megohm box;
The application circuit of a kind of electromechanical switch for high-voltage high-resistance box that Fig. 2 provides for the embodiment of the present invention;
The circuit diagram of electromagnet coil drive circuit in a kind of electromechanical switch for high-voltage high-resistance box that Fig. 3 provides for the embodiment of the present invention;
The application circuit of the another kind of electromechanical switch for high-voltage high-resistance box that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
A kind of electromechanical switch for high-voltage high-resistance box, for in voltage DC resistance boxes, described voltage DC resistance boxes comprises multiple resistance, described electromechanical switch for high-voltage high-resistance box comprises: rotary switch and multiple coil drive group, wherein, in described multiple coil drive group, each coil drive group comprises: an electromagnet coil drive circuit and an electromagnet coil corresponding with described electromagnet coil drive circuit, described rotary switch controls the break-make of described electromagnet coil drive circuit, and in described multiple resistance, each resistance is connected with normally opened contact;
Described rotary switch controls the energising of described electromagnet coil drive circuit, electromagnet coil corresponding to this electromagnet coil drive circuit is made to obtain electric, and then the normally opened contact corresponding with this electromagnet coil is closed, make resistance corresponding to the normally opened contact closed with this externally form path.
By applying above technical scheme, the present invention can use electromagnet coil control the disconnection of contact in voltage DC resistance boxes and close, and the distance between such contact just can widen, and prevents high voltage air breakdown between contact.Therefore, the present invention effectively can improve the high voltage performance of electromechanical switch for high-voltage high-resistance box.
Be illustrated below in conjunction with accompanying drawing for convenience of understanding.
As shown in Figure 2, when only comprising two resistance in voltage DC resistance boxes: during the first resistance R1 and the second resistance R2, the present invention also only comprises two electromagnet coil drive circuits: the first electromagnet coil drive circuit F1 and the second electromagnet coil drive circuit F2, accordingly, first electromagnet coil drive circuit F1 drives the first electromagnet coil D1, and the second electromagnet coil drive circuit F2 drives the second electromagnet coil D2.First electromagnet coil D1 obtain electric after, make the first normally opened contact K1 close, the second electromagnet coil D2 obtain electric after, make the second normally opened contact K2 close.After first normally opened contact K1 is closed, the external resistance value of voltage DC resistance boxes is 0.After second normally opened contact K2 is closed, the external resistance value of voltage DC resistance boxes is the first resistance R1.When the first normally opened contact K1 and the second normally opened contact K2 disconnects, the external resistance value of high-tension resistive case is the first resistance R1+ second resistance R2.Wherein, the first electromagnet coil drive circuit F1 and the second electromagnet coil drive circuit F2 is controlled by rotary switch.
In order to prevent occurring during switching over that arcing causes the shortening in electromechanical switch for high-voltage high-resistance box life-span, rotary switch can adopt the mode of make-before-break to carry out the switching of circuit.For the rotary switch shown in Fig. 1, contact A needs to have certain cover width, and in actual applications, contact A can be designed to brush form.When A brush will be switched to contact C from contact B, user makes brush A be connected with contact C with contact B by rotary brush A simultaneously, and user continues to rotate, and brush A and contact B is disconnected.Be understandable that, make-before-break is the common technology means of field of switches, and the present invention repeats no more.
It is easily understood that the resistance of resistance in high-tension resistive case is general comparatively large, certainly, the resistance in high-tension resistive case also can be selected according to actual needs, and the present invention does not limit the resistance of resistance in high-tension resistive case and other electric parameters.
Wherein, the distance between the first normally opened contact K1 and the second normally opened contact K2 can be greater than 10mm.Can also polyfluortetraethylene plate be provided with between first normally opened contact K1 and the second normally opened contact K2, for electrical isolation, prevent electric arc.
Wherein, two contacts of normally opened contact can be hemispherical.
Be understandable that, hemispheric contact is more conducive to avoid high voltage to produce electric field air breakdown.
Wherein, distance when two contacts of normally opened contact disconnect can be greater than 10mm.
Wherein, the material of normally opened contact can be that copper is silver-plated, and normally opened contact can be arranged on ptfe substrate and bar.
Be understandable that, the parameters such as the size of electromagnet coil can carry out selecting and setting according to actual needs, and the present invention does not limit at this.
By applying above technical scheme, the present invention can use electromagnet coil control the disconnection of contact in voltage DC resistance boxes and close, and the distance between such contact just can widen.Therefore, the present invention effectively can improve the high voltage performance of electromechanical switch for high-voltage high-resistance box.
As shown in Figure 3, electromagnet coil drive circuit in a kind of voltage DC resistance boxes that the embodiment of the present invention provides can comprise: the 3rd K switch 3, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the first electric capacity C1 and the first triode Q1, if this electromagnet coil drive circuit is connected with the first electromagnet coil D1.
Second end of described 3rd resistance R3 is connected with the first end of described 3rd K switch 3, second end of described 3rd K switch 3 is connected with the first end of described 4th resistance R4, the second end ground connection of described 4th resistance R4, the first end of described 3rd resistance R3 is connected with power end VCC;
The first end of described first electric capacity C1 is connected with power end VCC, second end of described first electric capacity C1 is connected with the first end of the first electromagnet coil D1, the first end of described 5th resistance R5 is connected with power end VCC, and second end of described 5th resistance R5 is connected with second end of described first electric capacity C1;
Second end of described first electromagnet coil D1 is connected with the collector electrode C of described first triode Q1, and the base stage B of the first triode Q1 is connected with the first end of described 4th resistance R4, the emitter E ground connection of the first triode Q1.
When the 3rd K switch 3 closes, the base stage B voltage of the first triode Q1 raises, and cause the first triode Q1 to be operated in amplification region, electric current will be had to flow to emitter E through collector electrode C, therefore the first electromagnet coil D1 obtains electric, starts working.
As shown in Figure 4, be the circuit diagram of the electromagnet coil drive circuit shown in the whole application drawing 3 of the present invention, conveniently, for selecting the resistance exported only to comprise R1 and R2 in voltage DC resistance boxes, it is easily understood that in other embodiments of the present invention, for select export resistance can also be more.
Wherein, the normally opened contact that the first resistance R1 connects, namely the first K switch 1 is controlled by the first electromagnet coil D1, the normally opened contact that the second resistance R2 connects, and namely second switch K2 is controlled by the second electromagnet coil D2.
Wherein, the first electromagnet coil drive circuit of the first electromagnet coil D1 is driven to comprise: the 3rd K switch 3, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the first electric capacity C1 and the first triode Q1, if this electromagnet coil drive circuit is connected with the first electromagnet coil D1.
Second end of described 3rd resistance R3 is connected with the first end of described 3rd K switch 3, second end of described 3rd K switch 3 is connected with the first end of described 4th resistance R4, the second end ground connection of described 4th resistance R4, the first end of described 3rd resistance R3 is connected with power end VCC;
The first end of described first electric capacity C1 is connected with power end VCC, second end of described first electric capacity C1 is connected with the first end of the first electromagnet coil D1, the first end of described 5th resistance R5 is connected with power end VCC, and second end of described 5th resistance R5 is connected with second end of described first electric capacity C1;
Second end of described first electromagnet coil D1 is connected with the collector electrode C of described first triode Q1, and the base stage B of the first triode Q1 is connected with the first end of described 4th resistance R4, the emitter E ground connection of the first triode Q1.
Wherein, the second electromagnet coil drive circuit of the second electromagnet coil D2 is driven to comprise: the 4th K switch 4, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the second electric capacity C2 and the second triode Q2, if this electromagnet coil drive circuit is connected with the second electromagnet coil D2.
Second end of described 6th resistance R6 is connected with the first end of described 4th K switch 4, second end of described 4th K switch 4 is connected with the first end of described 7th resistance R7, the second end ground connection of described 7th resistance R7, the first end of described 6th resistance R6 is connected with power end VCC;
The first end of described second electric capacity C2 is connected with power end VCC, second end of described second electric capacity C2 is connected with the first end of the second electromagnet coil D2, the first end of described 8th resistance R8 is connected with power end VCC, and second end of described 8th resistance R8 is connected with second end of described second electric capacity C2;
Second end of described second electromagnet coil D2 is connected with the collector electrode C of described second triode Q2, and the base stage B of the second triode Q2 is connected with the first end of described 7th resistance R7, the emitter E ground connection of the second triode Q2.
Be understandable that, user controls rotary switch and the 3rd K switch 3 or the 4th K switch 4 can be made to close, thus control the first electromagnet coil D1 by electromagnet coil drive circuit or the second electromagnet coil D2 obtains electric work, adhesive first K switch 1 or second switch K2, thus the resistance changing voltage DC resistance boxes.
By applying above technical scheme, the present invention can use electromagnet coil control the disconnection of switch in voltage DC resistance boxes and close, and the distance between such contact just can become large.Therefore, the present invention effectively can improve the high voltage withstanding performance of voltage DC resistance boxes breaker in middle.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. an electromechanical switch for high-voltage high-resistance box, for in voltage DC resistance boxes, described voltage DC resistance boxes comprises multiple resistance, it is characterized in that, described electromechanical switch for high-voltage high-resistance box comprises: rotary switch and multiple coil drive group, wherein, in described multiple coil drive group, each coil drive group comprises: an electromagnet coil drive circuit and an electromagnet coil corresponding with described electromagnet coil drive circuit, described rotary switch controls the break-make of described electromagnet coil drive circuit, and in described multiple resistance, each resistance is connected with normally opened contact;
Described rotary switch controls the energising of described electromagnet coil drive circuit, electromagnet coil corresponding to this electromagnet coil drive circuit is made to obtain electric, and then the normally opened contact corresponding with this electromagnet coil is closed, make resistance corresponding to the normally opened contact closed with this externally form path;
Described rotary switch adopts the mode of make-before-break to carry out the switching of circuit;
Distance when two contacts of described normally opened contact disconnect is greater than 10mm;
Distance between described normally opened contact is greater than 10mm;
Two contacts of described normally opened contact are hemispherical;
Polyfluortetraethylene plate is provided with between described normally opened contact;
Described normally opened contact is arranged on ptfe substrate;
Described electromagnet coil drive circuit comprises: the first switch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the first triode,
Second end of described first resistance is connected with the first end of described first switch, and the second end of described first switch is connected with the first end of described second resistance, the second end ground connection of described second resistance, and the first end of described first resistance is connected with power end;
The first end of described first electric capacity is connected with power end, second end of described first electric capacity is connected with the first end of electromagnet coil, the first end of described 3rd resistance is connected with power end, and the second end of described 3rd resistance is connected with the second end of described first electric capacity;
Second end of described electromagnet coil is connected with the collector electrode of described triode, and the base stage of described triode is connected with the first end of described second resistance, the grounded emitter of described triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008892.0A CN102522247B (en) | 2012-01-12 | 2012-01-12 | Electromechanical switch for high-voltage high-resistance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008892.0A CN102522247B (en) | 2012-01-12 | 2012-01-12 | Electromechanical switch for high-voltage high-resistance box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102522247A CN102522247A (en) | 2012-06-27 |
| CN102522247B true CN102522247B (en) | 2015-03-11 |
Family
ID=46293131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210008892.0A Active CN102522247B (en) | 2012-01-12 | 2012-01-12 | Electromechanical switch for high-voltage high-resistance box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102522247B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440453B (en) * | 2022-09-28 | 2023-07-04 | 江苏泽宇电力设计有限公司 | Grounding resistor cabinet with self-resistance-reducing function |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1236643A (en) * | 1968-06-06 | 1971-06-23 | Edmund Abrahamson | Improvements relating to electrical bridge circuits |
| CN2452099Y (en) * | 2000-09-19 | 2001-10-03 | 湖南计算机股份有限公司 | Resistor box capable of segmental regulating resistance |
| CN201522894U (en) * | 2009-10-20 | 2010-07-07 | 大庆康恒科技开发有限公司 | High-voltage insulated sleeve of electric dehydrator |
| CN202405160U (en) * | 2012-01-12 | 2012-08-29 | 浙江省电力试验研究院 | Electromechanical switch for high-voltage high-resistance box |
-
2012
- 2012-01-12 CN CN201210008892.0A patent/CN102522247B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102522247A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2424766B (en) | An on-load tap changer | |
| CN201936761U (en) | Novel position switch | |
| US20150357136A1 (en) | Modular Vacuum Interruption Apparatus | |
| KR20120079452A (en) | Power switching system including a micro-electromechanical system(mems) array | |
| US10614974B2 (en) | Switching device | |
| CN102522247B (en) | Electromechanical switch for high-voltage high-resistance box | |
| EE04790B1 (en) | Electrical switchgear for short-circuiting and short-circuiting a circuit | |
| CN108735548B (en) | Rotary type anti-impact current switch device based on magneto-rheological effect | |
| CN202405160U (en) | Electromechanical switch for high-voltage high-resistance box | |
| KR20050044542A (en) | Circuit arrangement for the reliable switching of electrical circuits | |
| CN104903985A (en) | Switching device | |
| JP2013138021A (en) | Electric power switch and arc-extinguishing method therefor | |
| CN103650086A (en) | Switching device | |
| CN207381982U (en) | It is a kind of to realize the threephase load switching device with alternate blocking function with two switches | |
| CN204189673U (en) | Three-phase integratedization exchanges without arc electrical equipment | |
| CN110890241B (en) | Switching device | |
| CN104269294B (en) | Three-phase integratedization exchanges without arc electrical equipment | |
| CN203760370U (en) | Isolated and combined post terminal | |
| CN104517743B (en) | A kind of permanent magnetic drive on-load voltage regulating switch | |
| CN104167340A (en) | Circuit breaker | |
| CN104124102A (en) | Novel alternating-current high-voltage vacuum circuit breaker for electrified railway | |
| CN108780717A (en) | Outdoor high-voltage power switch | |
| CN208077851U (en) | Electrical rotary switch | |
| AU2016101585A4 (en) | Circuit-breaker with Self-locking Function | |
| AU2016101584A4 (en) | Circuit-breaker with Self-locking Function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ELECTRIC POWER CORPORATION ELECTRIC POWER Free format text: FORMER OWNER: ZHEJIANG ELECTRIC POWER TEST AND RESEARCH INSITITUTE Effective date: 20121025 Owner name: STATE ELECTRIC NET CROP. Effective date: 20121025 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121025 Address after: Hangzhou City, Zhejiang province 310014 eight District No. 1, Huadian Zhaohui Applicant after: Electric Power Science Research Institute of Zhejiang Electric Power Company Applicant after: State Grid Corporation of China Address before: The eight district of Hangzhou city in Zhejiang province 310014 Huadian Zhaohui under No. 1 Lane Applicant before: Zhejiang Electric Power Test And Research Insititute |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |