CN103367026A - Self-powered circuit breaker and air cylinder assembly thereof - Google Patents
Self-powered circuit breaker and air cylinder assembly thereof Download PDFInfo
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- CN103367026A CN103367026A CN2013102623623A CN201310262362A CN103367026A CN 103367026 A CN103367026 A CN 103367026A CN 2013102623623 A CN2013102623623 A CN 2013102623623A CN 201310262362 A CN201310262362 A CN 201310262362A CN 103367026 A CN103367026 A CN 103367026A
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Abstract
The invention relates to the field of high-voltage circuit breakers, in particular to a self-powered circuit breaker and an air cylinder assembly thereof. The self-powered circuit breaker comprises an air cylinder assembly, wherein the air cylinder assembly comprises an air compression chamber air cylinder and an expansion chamber air cylinder; one end of the air compression chamber air cylinder is closed by a valve base, and the other end of the air compression chamber air cylinder has an open structure; the expansion chamber air cylinder is spliced into the open end of the air compression chamber air cylinder; one end, which is inserted into the air compression chamber air cylinder, of the expansion chamber air cylinder is further provided with a cylindrical extension segment; the valve base is provided with a convex compensating structure for being inserted into the expansion chamber air cylinder; and the size of the compensating structure is equal to the volume of the extension segment. In the self-powered circuit breaker, a plurality of contact fingers can be arranged correspondingly between the expansion chamber air cylinder and the air compression chamber air cylinder according to requirements, so that the resistance of a main loop is reduced, and the temperature rise of the circuit breaker is further reduced; and the size of the expansion chamber air cylinder does not change, so that the original short-circuit breaking performance of the circuit breaker is ensured.
Description
Technical field
The present invention relates to the primary cut-out field, particularly relate to a kind of self-blasting circuit breaker and cylinder assembly thereof.
Background technology
Circuit breaker is one of electric equipments of transformer station.When not only normally moving in system, it can cut off and connect high-tension line and various zero load and load current; and when system breaks down; interaction energy by protective relaying device excises various overload electric currents and short circuit current, the generation of Accident prevention scope and expansion automatically, rapidly, reliably.Sulfur hexafluoride breaker is to utilize sulfur hexafluoride gas to do the novel switched of dielectric and arc-extinguishing medium.Sulfur hexafluoride gas is colourless, tasteless, nontoxic, and non-flammable inert gas has very high dielectric strength and good arc extinction performance, and dielectric strength is considerably beyond traditional insulating gas.Therefore, it is used for electric power system, can improve reliability and the fail safe of electric power system.
Self-blasting circuit breaker is comparatively common a kind of in the circuit breaker, its main arc-extinguishing unit is cylinder assembly, cylinder assembly comprises expanding chamber cylinder and plenum chamber cylinder, wherein an end of plenum chamber cylinder passes through valve base sealing, the other end is uncovered structure, have plenum chamber in the plenum chamber cylinder, the expanding chamber cylinder is inserted in the opening end of plenum chamber cylinder and has expanding chamber.In addition, one in plenum chamber cylinder and the expanding chamber cylinder is provided with the fingertip mounting groove, the fingertip mounting groove is annular groove and the fingertip that wherein is equipped with annular, and fingertip is electrically connected expanding chamber cylinder and plenum chamber cylinder, and it obviously becomes the key factor that determines that circuit breaker cut-offs capacity.The arc quenching principle of self-blasting circuit breaker is to utilize electric arc to the heat effect of arc control device gas, the pressure in the arc control device is raise, thereby effectively blow out electric arc.From its arc quenching principle as can be known, the volume of expanding chamber plays vital effect to cut-offfing of circuit breaker.
Along with developing rapidly of national economy, the need for electricity amount of all trades and professions sharply increases, and power system load is growing, power supply reliability is required progressively to improve, its to circuit breaker to cut-off capacity requirement also more and more higher.Yet, in present self-blasting circuit breaker, owing to be subject to the expanding chamber effect of parameters, the length of expanding chamber cylinder is that certain restriction is arranged, this directly causes and can't arrange accordingly, can satisfy the required fingertip of circuit breaker drop-out current at expanding chamber cylinder or plenum chamber cylinder, therefore, the rated current parameter of present self-blasting circuit breaker is in fact still limited, and it still can't satisfy the requirement of use in some occasions.
Summary of the invention
The object of the present invention is to provide a kind of self-blasting circuit breaker, under the prerequisite that guarantees the original short circuit interruption performance of circuit breaker, to promote its rated current parameter.
Simultaneously, the present invention also aims to provide the cylinder assembly of above-mentioned self-blasting circuit breaker.
In order to address the above problem, self-blasting circuit breaker is by the following technical solutions: self-blasting circuit breaker, comprise cylinder assembly, cylinder assembly comprises plenum chamber cylinder and expanding chamber cylinder, one end of plenum chamber cylinder seals by valve seat, the other end is uncovered structure, the expanding chamber cylinder is inserted into the opening end of plenum chamber cylinder, end in the insertion plenum chamber cylinder of described expanding chamber cylinder also is provided with the extension of a tubular, valve seat is provided with for inserting the collocation structure expanding chamber cylinder, projection, and the volume of collocation structure equates with the volume of extension.
The shape complementarity of the profile of collocation structure and the endoporus of extension.
Described collocation structure forms the male half coupling structure at valve seat, and extension has formed the recessed fixing structure corresponding with collocation structure at the expanding chamber cylinder.
The opening end internal face of described plenum chamber cylinder is provided with the fingertip mounting groove.
Cylinder assembly is by the following technical solutions: cylinder assembly, comprise plenum chamber cylinder and expanding chamber cylinder, one end of plenum chamber cylinder seals by valve seat, the other end is uncovered structure, the expanding chamber cylinder is inserted into the opening end of plenum chamber cylinder, end in the insertion plenum chamber cylinder of described expanding chamber cylinder also is provided with the extension of a tubular, and valve seat is provided with for inserting the collocation structure expanding chamber cylinder, projection, and the volume of collocation structure equates with the volume of extension.
The shape complementarity of the profile of collocation structure and the endoporus of extension.
Described collocation structure forms the male half coupling structure at valve seat, and extension has formed the recessed fixing structure corresponding with collocation structure at the expanding chamber cylinder.
The opening end internal face of described plenum chamber cylinder is provided with the fingertip mounting groove.
In this self-blasting circuit breaker, because the end in the insertion plenum chamber cylinder of expanding chamber cylinder also is provided with the extension of a tubular, therefore can between expanding chamber cylinder and plenum chamber cylinder, a plurality of fingertips be set as required accordingly, thereby reduce the resistance of major loop, and then the temperature rise of minimizing circuit breaker, promote the rated current parameter of circuit breaker, in this process, because valve seat is provided with for inserting the expanding chamber cylinder, the collocation structure of projection, the volume of collocation structure equates with the volume of extension, therefore, as the direct principal element that affects the break performance of circuit breaker, the volume of expanding chamber cylinder does not change, and has guaranteed thus the original short circuit interruption performance of circuit breaker, in sum, this self-blasting circuit breaker promotes its rated current parameter under the prerequisite that guarantees the original short circuit interruption performance of circuit breaker.
Further, after the shape complementarity of the profile of collocation structure and the endoporus of extension, be convenient on the one hand design processing, can guarantee further also that on the other hand collocation structure is to the compensation precision in the extended space of extension; The comparatively ripe fixing structure of employing has then further facilitated the processing to collocation structure and extension on the one hand, and the opposing party aspect can also realize the accurate location between the two.
Description of drawings
Fig. 1 is the structural representation of the cylinder assembly of self-blasting circuit breaker;
Fig. 2 is the structural representation of cylinder assembly.
Embodiment
The embodiment of self-blasting circuit breaker, as shown in Figure 1, other structure of this self-blasting circuit breaker is prior art, therefore the structure of its cylinder assembly of article herein, cylinder assembly comprises plenum chamber cylinder 11 and expanding chamber cylinder 12, wherein an end of plenum chamber cylinder 11 is by valve seat 13 sealings, the other end is uncovered structure, in the present embodiment, valve seat 13 fixedly is assemblied in the plenum chamber cylinder 11 by jackscrew, wherein the top wire hole on the plenum chamber cylinder 11 has two rows, and two row's top wire holes are along the axial distribution of plenum chamber cylinder 11, and it is mainly used in realizing the adjusting to valve seat 13 positions, the medial surface of valve seat 13 is provided with the collocation structure 131 of projection, in the present embodiment, collocation structure 131 is truncated cone-shaped, and it has formed the male half coupling structure at valve seat 13.Expanding chamber cylinder 12 is inserted into the opening end of plenum chamber cylinder 11, wherein the end in the insertion plenum chamber cylinder 11 of expanding chamber cylinder 12 also is provided with the extension 121 of a tubular, the interior hole shape of this extension 121 and the shape complementarity of the collocation structure on the valve seat 13 and formed recessed fixing structure at expanding chamber cylinder 12.The opening end internal face of plenum chamber cylinder 11 is provided with fingertip mounting groove 111, in the present embodiment, fingertip mounting groove 111 has four roads and distributes (in the prior art along the axially spaced-apart of plenum chamber cylinder 11, owing to be subject to the length restriction of expanding chamber cylinder, generally only twice fingertip mounting groove can be set in the plenum chamber cylinder), it is used for assembling corresponding fingertip.
In other embodiment of self-blasting circuit breaker, only need guarantee that the volume of collocation structure equates to get final product with the volume of extension, can not do restriction for their shape.
The embodiment of cylinder assembly, as shown in Figure 2, the structure of the cylinder assembly in the structure of this cylinder assembly and the above-mentioned self-blasting circuit breaker is identical, and it will not go into details herein.
Claims (8)
1. self-blasting circuit breaker, comprise cylinder assembly, cylinder assembly comprises plenum chamber cylinder and expanding chamber cylinder, one end of plenum chamber cylinder seals by valve seat, and the other end is uncovered structure, and the expanding chamber cylinder is inserted into the opening end of plenum chamber cylinder, it is characterized in that, end in the insertion plenum chamber cylinder of described expanding chamber cylinder also is provided with the extension of a tubular, and valve seat is provided with for inserting the collocation structure expanding chamber cylinder, projection, and the volume of collocation structure equates with the volume of extension.
2. self-blasting circuit breaker according to claim 1 is characterized in that, the shape complementarity of the profile of collocation structure and the endoporus of extension.
3. self-blasting circuit breaker according to claim 2 is characterized in that, described collocation structure forms the male half coupling structure at valve seat, and extension has formed the recessed fixing structure corresponding with collocation structure at the expanding chamber cylinder.
4. the described self-blasting circuit breaker of each claim is characterized in that according to claim 1-3, and the opening end internal face of described plenum chamber cylinder is provided with the fingertip mounting groove.
5. cylinder assembly, comprise plenum chamber cylinder and expanding chamber cylinder, one end of plenum chamber cylinder seals by valve seat, the other end is uncovered structure, the expanding chamber cylinder is inserted into the opening end of plenum chamber cylinder, it is characterized in that, the end in the insertion plenum chamber cylinder of described expanding chamber cylinder also is provided with the extension of a tubular, valve seat is provided with for inserting the collocation structure expanding chamber cylinder, projection, and the volume of collocation structure equates with the volume of extension.
6. cylinder assembly according to claim 5 is characterized in that, the shape complementarity of the profile of collocation structure and the endoporus of extension.
7. cylinder assembly according to claim 6 is characterized in that, described collocation structure forms the male half coupling structure at valve seat, and extension has formed the recessed fixing structure corresponding with collocation structure at the expanding chamber cylinder.
8. the described cylinder assembly of each claim is characterized in that according to claim 5-7, and the opening end internal face of described plenum chamber cylinder is provided with the fingertip mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262362.3A CN103367026B (en) | 2013-06-27 | 2013-06-27 | Self-blasting circuit breaker and cylinder assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262362.3A CN103367026B (en) | 2013-06-27 | 2013-06-27 | Self-blasting circuit breaker and cylinder assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103367026A true CN103367026A (en) | 2013-10-23 |
| CN103367026B CN103367026B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310262362.3A Active CN103367026B (en) | 2013-06-27 | 2013-06-27 | Self-blasting circuit breaker and cylinder assembly thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237356A (en) * | 1977-04-13 | 1980-12-02 | Bbc Brown, Boveri & Company Limited | Electrical compression switch with contact movement assistor |
| WO2007051320A1 (en) * | 2005-11-03 | 2007-05-10 | Abb Research Ltd | Self-blowing switch with gas precompression |
| CN201315287Y (en) * | 2008-11-19 | 2009-09-23 | 平高集团有限公司 | Arc extinguish chamber of double-chamber thermal expanding self-extinguishing type SF6 circuit breaker and an air cylinder thereof |
| CN201514893U (en) * | 2009-08-14 | 2010-06-23 | 中国西电电气股份有限公司 | Thermal-expansion gas arc-extinguishing chamber |
| CN202126962U (en) * | 2011-07-06 | 2012-01-25 | 江苏省如高高压电器有限公司 | Arc extinguishing chamber structure of 35kV sulfur hexafluoride circuit breaker |
| CN203300542U (en) * | 2013-06-27 | 2013-11-20 | 国家电网公司 | Self energy breaker and cylinder assembly thereof |
-
2013
- 2013-06-27 CN CN201310262362.3A patent/CN103367026B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237356A (en) * | 1977-04-13 | 1980-12-02 | Bbc Brown, Boveri & Company Limited | Electrical compression switch with contact movement assistor |
| WO2007051320A1 (en) * | 2005-11-03 | 2007-05-10 | Abb Research Ltd | Self-blowing switch with gas precompression |
| CN201315287Y (en) * | 2008-11-19 | 2009-09-23 | 平高集团有限公司 | Arc extinguish chamber of double-chamber thermal expanding self-extinguishing type SF6 circuit breaker and an air cylinder thereof |
| CN201514893U (en) * | 2009-08-14 | 2010-06-23 | 中国西电电气股份有限公司 | Thermal-expansion gas arc-extinguishing chamber |
| CN202126962U (en) * | 2011-07-06 | 2012-01-25 | 江苏省如高高压电器有限公司 | Arc extinguishing chamber structure of 35kV sulfur hexafluoride circuit breaker |
| CN203300542U (en) * | 2013-06-27 | 2013-11-20 | 国家电网公司 | Self energy breaker and cylinder assembly thereof |
Non-Patent Citations (1)
| Title |
|---|
| 高文等: "252kV自能SF6断路器开断能力的研究和提高", 《高压电器》 * |
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| CN103367026B (en) | 2016-04-06 |
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