CN218867021U - Circuit breaker conductor and circuit breaker - Google Patents
Circuit breaker conductor and circuit breaker Download PDFInfo
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- CN218867021U CN218867021U CN202221774123.7U CN202221774123U CN218867021U CN 218867021 U CN218867021 U CN 218867021U CN 202221774123 U CN202221774123 U CN 202221774123U CN 218867021 U CN218867021 U CN 218867021U
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Abstract
The utility model relates to a circuit breaker conductor and circuit breaker, the circuit breaker conductor includes: an electrically conductive body having a gas channel for passage of a gas; and the heat conducting piece is connected with the conductive main body, is positioned in the gas channel and can exchange heat with the gas. Above-mentioned circuit breaker conductor is provided with the heat-conducting piece through the gas channel inside that gas passes through, and the rethread heat-conducting piece carries out the heat exchange with the gas in the gas channel to can reduce the temperature that is located gas channel internal gas. Compared with the traditional circuit breaker conductor, the circuit breaker conductor can avoid high-temperature gas from directly entering between the circuit breaker conductor and the circuit breaker shell, so that the influence of the high-temperature gas on the insulation performance between the circuit breaker conductor and the circuit breaker shell is avoided, and flashover and breakdown which are possibly generated between the circuit breaker conductor and the circuit breaker shell in the breaking process of high current of the circuit breaker are effectively reduced.
Description
Technical Field
The utility model relates to a circuit breaker technical field especially relates to a circuit breaker conductor and circuit breaker.
Background
The SF6 circuit breaker is a circuit breaker using SF6 gas as an arc extinguishing medium and an insulating medium, and the SF6 gas with certain pressure is filled in an arc extinguishing chamber of the circuit breaker, so that electric arcs generated in the process of opening and closing the circuit breaker can be extinguished by sulfur hexafluoride.
At the on-off process of circuit breaker, from the gaseous exhaust hole that enters into between circuit breaker conductor and the circuit breaker casing of circuit breaker spout spun SF6 on the circuit breaker conductor to improve the insulating properties between circuit breaker conductor and the circuit breaker casing, avoid the circuit breaker at the on-off process of heavy current, produce flashover and puncture between circuit breaker conductor and the circuit breaker casing.
And the SF6 gas from circuit breaker spout spun often has very high temperature, and the SF6 gas of high temperature flows into between circuit breaker conductor and the circuit breaker casing after, can lead to the insulating properties between circuit breaker conductor and the circuit breaker casing to reduce, leads to producing flashover and puncturing easily between circuit breaker conductor and the circuit breaker casing.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a breaker conductor and a breaker that can improve the above-mentioned defects, in order to solve the problem that the insulation performance between the breaker conductor and the breaker case is lowered after the high-temperature SF6 gas flows into between the breaker conductor and the breaker case.
A circuit breaker conductor comprising:
an electrically conductive body having a gas channel for passage of a gas;
and the heat conducting piece is connected with the conductive main body, is positioned in the gas channel and can exchange heat with the gas.
In one embodiment, the conductive body further has a gas inlet and a gas outlet communicating with the gas channel, and the heat-conducting member is located on a side of the gas outlet facing away from the gas inlet.
In one embodiment, the axial end of the conductive body is provided with the air inlet, and the side surface of the conductive body is provided with the air outlet.
In one embodiment, the air outlet comprises a plurality of air outlets, and all the air outlets are arranged around the circumference of the conductive main body at intervals.
In one embodiment, the heat conducting member is mounted on and protrudes from the inner side wall of the gas channel.
In one embodiment, the heat conducting member includes a plurality of heat conducting members, and all of the heat conducting members are arranged at intervals around the circumference of the conductive body.
In one embodiment, the heat conducting member includes a plurality of heat conducting members, and all of the heat conducting members are arranged at intervals in a longitudinal direction of the conductive body.
In one embodiment, the thermally conductive member and the electrically conductive body are integrally formed.
In one embodiment, the gas is SF6 gas
A circuit breaker comprising a circuit breaker conductor as claimed in any preceding claim.
Above-mentioned circuit breaker conductor is provided with the heat-conducting piece through the gas channel inside that gas passes through, and the rethread heat-conducting piece carries out the heat exchange with the gas in the gas channel to can reduce the temperature that is located gas channel internal gas. Compared with the traditional circuit breaker conductor, the circuit breaker conductor can prevent high-temperature gas from directly entering the space between the circuit breaker conductor and the circuit breaker shell, so that the influence of the high-temperature gas on the insulation performance between the circuit breaker conductor and the circuit breaker shell is avoided, and flashover and breakdown possibly generated between the circuit breaker conductor and the circuit breaker shell in the breaking process of high current of the circuit breaker are effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a breaker conductor according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a circuit breaker conductor according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a circuit breaker conductor according to another embodiment of the present invention.
A breaker conductor 100;
a conductive body 10; a gas passage 11; an air inlet 12; an air outlet 13;
a thermally conductive member 20.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 shows a schematic structural diagram of a circuit breaker conductor 100 according to an embodiment of the present invention, and an embodiment of the present invention provides a circuit breaker conductor 100 including a conductive main body 10 and a heat conducting member 20.
The conductive body 10 is made of a metal material to perform a conductive function, and a gas passage 11 for passing a gas is further formed inside the conductive body 10. The heat-conducting member 20 is connected to the conductive body 10 and is located in the gas passage 11, and the heat-conducting member 20 can exchange heat with the gas, thereby reducing the temperature of the gas in the gas passage 11.
In actual use, the temperature of the gas outside the breaker conductor 100 is low, and the temperature of the gas inside the gas channel 11 is low, so that when the gas inside the gas channel 11 passes through the heat conducting member 20, the gas exchanges heat with the heat conducting member 20, thereby reducing the temperature of the gas. The heat conducting member 20 transfers heat to the conductive body 10 after absorbing heat of the gas, and since the conductive body 10 is made of a metal material, the conductive body 10 can rapidly exchange heat with the gas outside the breaker conductor 100, and further dissipate the heat absorbed by the conductive body 10 to the outside of the breaker conductor 100.
The breaker conductor 100 is provided with the heat conductor 20 inside the gas passage 11 through which the gas passes, and the heat conductor 20 exchanges heat with the gas in the gas passage 11, thereby reducing the temperature of the gas in the gas passage 11. Compared with the traditional circuit breaker conductor 100, the circuit breaker conductor 100 can prevent high-temperature gas from directly entering between the circuit breaker conductor 100 and a circuit breaker shell, so that the influence of the high-temperature gas on the insulation performance between the circuit breaker conductor 100 and the circuit breaker shell is avoided, and the flashover and breakdown possibly generated between the circuit breaker conductor 100 and the circuit breaker shell in the high-current breaking process of the circuit breaker are effectively reduced.
Optionally, the gas is SF6 gas, i.e. sulfur hexafluoride gas, which has a very good electronegativity, and its molecules can rapidly capture free electrons to form negative ions. The conduction of the negative ions is very slow, so that the recovery rate of the medium strength of the arc gap is accelerated, and the negative ions have good arc extinguishing performance and are widely applied to various high-voltage circuit breakers.
The embodiment of the utility model provides an in, electrically conductive main part 10 still has air inlet 12 and gas outlet 13 that are linked together with gas channel 11, and circuit breaker spout spun high temperature gas enters into gas channel 11 through air inlet 12 in, flows out electrically conductive main part 10 from gas outlet 13 again and enters into between circuit breaker conductor 100 and the circuit breaker casing.
In the actual use process, the gas flowing into the gas channel 11 from the gas inlet 12 has the characteristic of high flow rate in addition to high temperature, so that the high-speed gas flows into the gas channel 11 from the gas inlet 12, does not directly flow out from the gas outlet 13, but continuously flows deep in the gas channel 11 until reaching the end part of the gas channel 11, and then reversely flows back to the gas outlet 13 to leave the gas channel 11. Because the gas that flows back to gas outlet 13 in the reverse direction can produce the convection current with the gas that the forward flow flows to slow down gaseous velocity of flow, for this reason, heat-conducting piece 20 is located the gas outlet 13 and deviates from the one side of air inlet 12, because the one side that gas outlet 13 deviates from air inlet 12 is the position of gaseous convection current, therefore the gaseous velocity of flow of this department is slower, with heat-conducting piece 20 setting in the position that the gaseous velocity of flow is slower, can make gas can fully contact with heat-conducting piece 20, thereby improve gaseous cooling effect.
In some embodiments, in order to make the convection effect of the gas more pronounced, the gas inlet 12 is provided on one of the axial ends of the conductive body 10 and the gas outlet 13 is provided on the side of the conductor. Therefore, the high-temperature and high-flow-rate gas input from the gas inlet 12 directly flows to the other axial end of the conductive main body 10 and completely flows back in the reverse direction after meeting the other axial end, the gas flowing back in the reverse direction and the gas flowing in the forward direction later flow in a convection manner to reduce the flow rate, and the gas with the reduced flow rate is in full contact with the flow guide member in the gas channel 11 to be cooled and then slowly flows out from the gas outlet 13 on the side surface of the conductive main body 10.
In some embodiments, the gas outlets 13 include a plurality of gas outlets 13, all of the gas outlets 13 are arranged at intervals around the circumference of the guide body, and the gas flowing out of the gas channel 11 can be uniformly distributed around the circumference of the breaker conductor 100 through the plurality of gas outlets 13, so that the gas flowing out of the gas channel 11 can be rapidly mixed with the gas outside the breaker conductor 100 and cooled, further, the high-temperature gas is prevented from directly flowing between the breaker conductor 100 and the breaker housing, the insulation performance between the breaker conductor 100 and the breaker housing is reduced,
in specific embodiments, the conductive body 10 is a cylindrical structure, the air outlet 13 is a rectangular window disposed on a side surface of the conductive body 10, the plurality of rectangular windows are uniformly arranged around an axial direction of the conductive body 10, each rectangular window has a size of 120mm in length and 90mm in width, and a radius is disposed on an edge of each rectangular window, and a radius of the radius is between 10mm and 20 mm.
The embodiment of the present invention provides a heat conduction member 20 installed on the inner side wall of the gas channel 11 and protruding from the inner side wall of the gas channel 11, so that the heat conduction member 20 can be in contact with the gas in the gas channel 11 sufficiently. In a preferred embodiment, the heat-conducting member 20 protrudes 20mm to 25mm from the inner side wall of the gas passage 11, and the thickness of the heat-conducting member 20 is 5mm to 10mm.
Wherein, heat-conducting member 20 includes a plurality ofly, and whole heat-conducting members 20 are laid each other at interval to improve gaseous cooling effect. In one embodiment, all the heat-conducting members 20 are arranged at intervals around the axial direction of the conductive body 10, and referring to fig. 2, in this embodiment, the gas flows through the gap between two adjacent heat-conducting members 20, so that the contact time of the gas with the heat-conducting members 20 is longer, and the gas can be fully contacted with the heat-conducting members 20, thereby improving the heat dissipation effect of the gas.
In another embodiment, all the heat-conducting members 20 are arranged at intervals along the longitudinal direction of the conductive body 10, and referring to fig. 3, in this embodiment, when the gas contacts with the heat-conducting members 20, the gas is sequentially blocked by the plurality of heat-conducting members 20, so that the flow velocity of the heat-conducting members 20 can be reduced, and the contact time of the gas and the heat-conducting members 20 can be increased, thereby improving the heat dissipation effect of the gas.
The embodiment of the utility model provides an in, heat-conducting piece 20 and electrically conductive main part 10 integrated into one piece to make heat-conducting piece 20 and electrically conductive main part 10 form a whole, thereby improve the heat transfer efficiency between heat-conducting piece 20 and the electrically conductive main part 10, thereby make the gaseous heat of heat-conducting piece 20 absorptive can distribute away on transferring electrically conductive main part 10 fast, further improve gaseous cooling efficiency.
Alternatively, the heat conductive member 20 and the conductive body 10 are integrally formed of an aluminum material.
The embodiment of the utility model provides a still provide a circuit breaker, including circuit breaker casing and as above circuit breaker conductor 100 in any embodiment. In the circuit breaker, the heat conducting member 20 is provided in the gas passage 11 through which the gas passes, and the heat exchange with the gas in the gas passage 11 is performed through the heat conducting member 20, so that the temperature of the gas in the gas passage 11 can be reduced. So just avoid the gas of high temperature to directly enter into between circuit breaker conductor 100 and the circuit breaker casing to avoid high temperature gas to influence the insulating properties between circuit breaker conductor 100 and the circuit breaker casing, effectively reduced the circuit breaker at the on-off process of heavy current, flashover and the breakdown that probably produce between circuit breaker conductor 100 and the circuit breaker casing.
Optionally, the circuit breaker is an SF6 circuit breaker, that is, a circuit breaker using SF6 gas as an insulating medium.
The circuit breaker conductor has at least the following advantages:
the temperature of the gas in the gas passage 11 can be lowered by providing the heat conduction member 20 inside the gas passage 11 through which the gas passes, and by heat exchange between the heat conduction member 20 and the gas in the gas passage 11. Compared with the traditional circuit breaker conductor 100, the circuit breaker conductor 100 can prevent high-temperature gas from directly entering between the circuit breaker conductor 100 and a circuit breaker shell, so that the influence of the high-temperature gas on the insulation performance between the circuit breaker conductor 100 and the circuit breaker shell is avoided, and the flashover and breakdown possibly generated between the circuit breaker conductor 100 and the circuit breaker shell in the high-current breaking process of the circuit breaker are effectively reduced.
The heat conducting piece 20 is located on one side of the gas outlet 13 deviating from the gas inlet 12, and one side of the gas outlet 13 deviating from the gas inlet 12 is a gas convection position, so that the gas flow rate is slow, the heat conducting piece 20 is arranged at the position where the gas flow rate is slow, and gas can be fully contacted with the heat conducting piece 20, so that the gas cooling effect is improved, and the flashover and breakdown possibly generated between the breaker conductor 100 and the breaker shell in the high-current breaking process of the breaker are further reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A circuit breaker conductor, comprising:
an electrically conductive body (10) having a gas channel (11) for the passage of a gas;
and the heat conducting piece (20) is connected with the conductive main body (10), is positioned in the gas channel (11) and can exchange heat with the gas.
2. The disconnector conductor according to claim 1, characterized in that the electrically conductive body (10) further has a gas inlet (12) and a gas outlet (13) communicating with the gas channel (11), the heat-conducting member (20) being located on a side of the gas outlet (13) facing away from the gas inlet (12).
3. The disconnector conductor according to claim 2, characterized in that the gas inlet (12) is opened at an axial end of the conductive body (10), and the gas outlet (13) is opened at a side surface of the conductive body (10).
4. A disconnector conductor according to claim 3, characterized in that the gas outlet (13) comprises a plurality of gas outlets, all gas outlets (13) being arranged at intervals around the circumference of the conductive body (10).
5. The circuit breaker conductor of claim 1 wherein said thermal conductor member (20) is mounted on and projects from an inner side wall of said gas passage (11).
6. The disconnector conductor according to claim 5, characterized in that the thermal conductor member (20) comprises a plurality of thermal conductor members, all of the thermal conductor members (20) being arranged at intervals around the circumference of the electrically conductive body (10).
7. The circuit breaker conductor of claim 5 wherein said thermal conductor member (20) comprises a plurality of said thermal conductor members (20), all of said thermal conductor members (20) being spaced apart in a longitudinal direction of said conductive body (10).
8. Circuit breaker conductor according to claim 1, characterized in that said heat conducting member (20) and said conductive body (10) are integrally formed.
9. The circuit breaker conductor of claim 1 wherein said gas is SF6 gas.
10. A circuit breaker comprising a circuit breaker conductor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221774123.7U CN218867021U (en) | 2022-07-11 | 2022-07-11 | Circuit breaker conductor and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221774123.7U CN218867021U (en) | 2022-07-11 | 2022-07-11 | Circuit breaker conductor and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218867021U true CN218867021U (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221774123.7U Active CN218867021U (en) | 2022-07-11 | 2022-07-11 | Circuit breaker conductor and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218867021U (en) |
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2022
- 2022-07-11 CN CN202221774123.7U patent/CN218867021U/en active Active
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