CN116153734A - Arc extinguishing chamber and working method thereof - Google Patents

Arc extinguishing chamber and working method thereof Download PDF

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Publication number
CN116153734A
CN116153734A CN202310214190.6A CN202310214190A CN116153734A CN 116153734 A CN116153734 A CN 116153734A CN 202310214190 A CN202310214190 A CN 202310214190A CN 116153734 A CN116153734 A CN 116153734A
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China
Prior art keywords
thermal expansion
expansion chamber
arc
annular channel
contact
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Granted
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CN202310214190.6A
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Chinese (zh)
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CN116153734B (en
Inventor
严旭
马占峰
路媛婧
吕军玲
马冲
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China XD Electric Co Ltd
Xian XD Switchgear Electric Co Ltd
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China XD Electric Co Ltd
Xian XD Switchgear Electric Co Ltd
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Priority to CN202310214190.6A priority Critical patent/CN116153734B/en
Publication of CN116153734A publication Critical patent/CN116153734A/en
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Publication of CN116153734B publication Critical patent/CN116153734B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02Details
    • H01H73/18Means for extinguishing or suppressing arc

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  • Circuit Breakers (AREA)

Abstract

The invention belongs to the technical field of switches, and relates to an arc extinguishing chamber which is provided with at least one arcing system, wherein the arcing system comprises a first contact, a second contact, a third contact, a thermal expansion chamber, a functional piece and a pressure cylinder; the functional piece is provided with an annular channel connected with the arc gap, the inlet end of the annular channel annularly surrounds the arc gap, and the outlet end of the annular channel is connected with the thermal expansion chamber; the outlet end of the annular channel is provided with a first one-way valve; the functional piece is also provided with a pipeline, one end of the pipeline is connected with the annular channel, and the other end of the pipeline is communicated with a space enclosed by the circuit breaker shell; the air cylinder is communicated with the thermal expansion chamber through a connecting channel, and a second one-way valve is arranged at one end of the connecting channel, which is connected with the thermal expansion chamber. Each possible flow of the electric arc is provided with a structure entering the thermal expansion chamber, so that most of electric arc energy is utilized; only one thermal expansion chamber is provided, only one arc blowing channel is provided, turbulent flow is not generated during arc blowing, and high efficiency is achieved.

Description

Arc extinguishing chamber and working method thereof
Technical Field
The invention belongs to the technical field of switches, and particularly relates to an arc extinguishing chamber and a working method thereof.
Background
The breaker based on the self-energy arc extinguishing principle can effectively reduce the operation work of the mechanism and realize miniaturization and economy of products. However, since all or most of the energy required for breaking the current comes from arc energy, the self-energy arc-extinguishing circuit breaker has a high requirement for energy utilization efficiency. If the arc energy is not sufficiently utilized, a sufficient pressure cannot be established in the thermal expansion chamber, and the arc extinguishing efficiency thereof is also affected. Therefore, a circuit breaker employing a self-extinguishing principle is required to solve the problem of arc energy utilization efficiency.
From a macroscopic point of view, the arc corresponds to a charged conductor, which generates a magnetic field. Essentially, an arc is a charged plasma that is subject to a magnetic field. The arc tends to shrink under the influence of its own magnetic field. The larger the off-current, the greater the pinch pressure. The pinch pressure of the arc creates a strong axial gas flow that carries significant arc energy.
In patent ZL202010866044.8, an arc chute structure is disclosed having two thermal expansion chambers, both axial and circumferential, that can fully collect and harness the energy of the arc. It has two thermal expansion chambers, in which the energy of the arc can be fully utilized to build up a higher gas pressure. After the current crosses zero, the air pressure between the fractures is reduced, high-pressure air in the two expansion chambers can be blown out simultaneously, two air flows blown out simultaneously can be mutually influenced, turbulence is generated at the fractures, heat between the two air flows and the fractures is not utilized to be rapidly dissipated, and therefore the arc blowing effect is adversely affected.
Disclosure of Invention
The invention aims to provide an arc extinguishing chamber and a working method thereof, which solve the problem of arc blowing turbulence existing in the prior arc extinguishing chamber adopting two expansion chambers.
The invention is realized by the following technical scheme:
an arc chute having at least one arcing system including fixedly mounted first and second contacts, a repositionable third contact, and first and second arcing rings mounted on opposite inner sides of the first and second contacts; the first arcing ring and the second arcing ring form an arc gap;
the device also comprises a thermal expansion chamber, a functional piece and a pressure cylinder;
the thermal expansion chamber is arranged at one side of the first contact far away from the second contact and is communicated with the arc gap;
the functional piece is arranged between the first arcing ring and the second arcing ring, an annular channel connected with the arc gap is arranged in the functional piece, the annular channel is annularly surrounded by the arc gap at the inlet end of the annular channel, and the thermal expansion chamber is connected at the outlet end of the annular channel;
the outlet end of the annular channel is provided with a first one-way valve;
the functional piece is also provided with a pipeline, one end of the pipeline is connected with the annular channel, and the other end of the pipeline is communicated with a space enclosed by the circuit breaker shell;
the air cylinder is communicated with the thermal expansion chamber through a connecting channel, and a second one-way valve is arranged at one end of the connecting channel, which is connected with the thermal expansion chamber.
Further, the connection point of the conduit and the annular channel is near the inlet end of the annular channel.
Further, the cross-sectional shape of the annular channel is streamline.
Further, the pressure cylinder is located outside the thermal expansion chamber and is coaxial with the thermal expansion chamber.
Further, the connecting channel is provided with a plurality of, and around the axis equipartition of third contact.
Further, the functional piece is made of high-temperature resistant materials.
Further, the pipeline is provided with a plurality of, and around the axis equipartition of third contact.
Further, the volume of the thermal expansion chamber is much greater than the volume of the annular channel.
Further, the functional piece is an integral piece or is formed by combining a plurality of parts.
The invention also discloses a working method based on the arc extinguishing chamber, which comprises the following steps:
the third contact moves along the axis A, contacts the first contact and the second contact at a closing position, is separated from the first contact and the second contact at a certain distance at a separating position, and pulls an arc gap between the two contacts; axial energy generated by combustion arc between the first arcing ring and the second arcing ring enters the thermal expansion chamber;
the circumferential energy generated by the electric arc enters the annular channel, and when the air pressure in the annular channel is higher than the air pressure in the thermal expansion chamber, the first one-way valve is opened to allow the air in the annular channel to enter the thermal expansion chamber; when the air pressure in the thermal expansion chamber is higher than the air pressure in the annular channel, the first one-way valve is closed;
in the early stage of arc combustion, the air pressure in the thermal expansion chamber is lower than the air pressure in the annular channel, part of radial energy generated by the arc is discharged into a space enclosed by the circuit breaker shell through a pipeline, and the other part of radial energy enters the thermal expansion chamber through the annular channel to heat the gas in the thermal expansion chamber; with the increase of the arcing time, the air pressure in the thermal expansion chamber is higher than that of the annular channel, the first one-way valve is closed, and radial energy generated by the arc is discharged into a space surrounded by the circuit breaker shell through a pipeline;
when the small current is cut off, the energy of the electric arc is insufficient to enable the thermal expansion chamber to build enough pressure, the air pressure cylinder is needed to assist in building the pressure, and when the air pressure in the air pressure cylinder is higher than the air pressure in the thermal expansion chamber, the second one-way valve is opened to allow the air in the air pressure cylinder to enter the thermal expansion chamber; the second one-way valve is closed when the air pressure in the thermal expansion chamber is higher than the air pressure in the air cylinder.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an arc extinguishing chamber, which is only provided with an axial thermal expansion chamber, a functional piece is arranged in the radial direction, an annular channel is arranged on the functional piece, radial arc energy can enter the thermal expansion chamber through the annular channel, the axial arc energy directly enters the thermal expansion chamber through the axial direction, and structures entering the thermal expansion chamber are arranged on all possible flows of the arc, so that most of the arc energy is utilized; the air pressure cylinder is also connected to one side of the thermal expansion chamber, when the small current is cut off, the energy of the electric arc is insufficient to enable the thermal expansion chamber to build enough pressure, the air pressure cylinder is needed to assist in building the pressure, and when the air pressure in the air pressure cylinder is higher than the air pressure in the thermal expansion chamber, the second one-way valve is opened to allow the air in the air pressure cylinder to enter the thermal expansion chamber; the second one-way valve is closed when the air pressure in the thermal expansion chamber is higher than the air pressure in the air cylinder. Meanwhile, the invention has only one thermal expansion chamber and only one arc blowing channel, does not generate turbulent flow during arc blowing, has higher efficiency and simpler structure.
Further, the connection point of the pipe and the annular channel is as close to the inlet end as possible, because after the arc is extinguished, the pressure of the arc gap is reduced, and the portion of gas between the connection point of the pipe and the annular channel and the arc gap may flow back into the arc gap, thereby affecting the breaking performance. Thus reducing the volume between the connection point and the inlet end and minimizing the back flow of gas in the annular channel to the arc gap.
Drawings
Fig. 1 is a schematic structural view of an arc extinguishing chamber according to the present invention.
Wherein, 1, a cylinder; 2. a piston; 3. a connection channel; 4. a second one-way valve; 5. a first one-way valve; 6. a first contact; 7. a thermal expansion chamber; 8. a first arcing ring; 9. an annular channel; 10. a functional member; 11. a third contact; 12. a second contact; 13. a second arcing ring; 14. a pipe; 15. arc gap; 16. a pressure release valve; 17. a pull rod;
71. an arc blowing channel;
91. an inlet end; 92. an outlet end.
Detailed Description
The objects, technical solutions and advantages of the present invention will be more apparent from the following detailed description with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention.
The components illustrated in the figures and described and shown in the embodiments of the invention may be arranged and designed in a wide variety of different configurations, and thus the detailed description of the embodiments of the invention provided in the figures below is not intended to limit the scope of the invention as claimed, but is merely representative of selected ones of the embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention, based on the figures and embodiments of the present invention.
It should be noted that: the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, element, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, element, method, article, or apparatus. Furthermore, the terms "horizontal" and "vertical" are based on the orientation and positional relationship of the devices or components shown in the drawings, and are merely used to better describe the present invention, and do not require that the devices, components or apparatus shown must have this particular orientation and therefore should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The sulfur hexafluoride circuit breaker shown in fig. 1 has at least one arcing system comprising a fixedly mounted first contact 6, a second contact 12, and a repositionable third contact 11. The first arcing ring 8 and the first arcing ring 13 can be fixedly mounted on the opposite inner sides of the first contact 6 and the second contact 12. The third contact 11 moves along the axis a, contacts the first contact 6 and the second contact 12 in the closing position, and is separated from the first contact and the second contact by a certain distance in the opening position and pulls an arc gap 15 between the two contacts;
when the circuit breaker starts to move to open, the third contact 11 moves to the left along the axis a. After the third contact 11 is separated from the first contact 6, an arc is generated therebetween. As the third contact 11 continues to move to the left, it is closer to the arcing ring 8, so that the arc is transferred to burn between the first arcing ring 8 and the third contact 11. When the third contact 11 moves to the left of the arcing ring 13, the arc is fixed between the second arcing ring 13 and the first arcing ring 8 to burn, and is no longer related to the position of the third contact 11. The space between the first arcing ring 8 and the first arcing ring 13 is an arc gap 15. The energy generated by the arc is mainly conducted by means of a high-temperature gas flow.
On the side of the first contact 6 remote from the arc zone, a thermal expansion chamber 7 is provided, the inlet 71 of the thermal expansion chamber 7 communicating with the arc gap 15 through the opening of the first contact 6. The axial energy generated by the combustion arc between the first arcing ring 8 and the first arcing ring 13 can enter the thermal expansion chamber 7.
An air cylinder 1 is provided outside the thermal expansion chamber 7 and coaxial with the thermal expansion chamber 7. The cylinder 1 is connected to a thermal expansion chamber 7 via a connecting channel 3. By the movement of the piston 2 therein, the gas in the cylinder is compressed to raise its pressure, and is forced into the thermal expansion chamber 7 by the connecting channel. The cylinder has two main functions. Firstly, before the third contact 11 and the first contact are separated (i.e., before arcing), the gas in the air cylinder 1 is pressed into the thermal expansion chamber 7, so that the pressure of the basic gas in the thermal expansion chamber 7 is increased, and the gas is heated and boosted from the higher pressure; second, at the time of switching off the small current, the energy of the arc is insufficient to build up sufficient pressure in the thermal expansion chamber 7, and the cylinder 1 is required to assist in build up pressure. The connecting channels 3 can be arranged in a plurality, and are uniformly distributed around the axis A, so that the gas in the air cylinder 1 can more smoothly enter the thermal expansion chamber 7. The piston 2 in the air cylinder 1 is fixedly connected with a pull rod 17, and the pull rod 17 spans across a fracture, so that the air cylinder is made of insulating materials so as to ensure the insulating performance of the circuit breaker in a closing state.
One end of the connecting channel 3 connected with the thermal expansion chamber 7 is provided with a second one-way valve 4, when the air pressure in the air cylinder 1 is higher than the air pressure in the thermal expansion chamber 7, the second one-way valve 4 is opened to allow the air in the air cylinder 1 to enter the thermal expansion chamber 7; when the air pressure in the thermal expansion chamber 7 is higher than the air pressure in the pressure cylinder 1, the second check valve 4 is closed.
The circuit breaker has a functional element 10 which surrounds the arc gap 15 in the form of a ring and which can be formed separately or in combination of several parts, which should be able to withstand the high temperatures generated by the arc, preferably of polytetrafluoroethylene. The functional element 10 has an annular channel 9 connected to the arc gap 15, the inlet end 91 of which surrounds the arc gap 15 in an annular manner and the outlet end 92 of which is connected to the thermal expansion chamber 7; one end of the annular channel 9 connected with the thermal expansion chamber 7 is provided with a first one-way valve 5, when the air pressure in the annular channel 9 is higher than the air pressure in the thermal expansion chamber 7, the first one-way valve 5 is opened to allow the air in the annular channel 9 to enter the thermal expansion chamber; when the air pressure in the thermal expansion chamber 7 is higher than the air pressure in the annular passage 9, the first check valve 5 is closed. The cross-sectional shape of the annular channel 9 is preferably streamlined to reduce the resistance to gas flow.
The functional element 10 also has a conduit 14 which is connected at one end to the annular channel 9 and at one end communicates with the space enclosed by the circuit breaker housing. The ducts 14 may be provided in several numbers, uniformly distributed about the axis a. The volume of the thermal expansion chamber 7 is much larger than the volume of the annular channel 9, so that the rate of rise of the air pressure in the thermal expansion chamber 7 will be much slower than the rate of rise of the air pressure in the annular channel 9. In the early stage of the arc combustion, the gas pressure in the thermal expansion chamber 7 is lower than the gas pressure in the annular channel 9, and part of radial energy generated by the arc is discharged into a space enclosed by the circuit breaker shell through a pipeline 14, and the other part of radial energy can enter the thermal expansion chamber 7 through the annular channel 9 to heat the gas in the thermal expansion chamber. Since the arc energy is mainly transferred axially, the gas pressure in the thermal expansion chamber 7 will be higher than in the annular channel 9 as the arcing time increases, when the first non-return valve 5 is closed. Radial energy generated by the arc is discharged through the conduit 14 into the space enclosed by the circuit breaker housing.
During the arc combustion process, radial energy continuously enters the annular channel 9 in a high-temperature high-pressure gas mode, and after the first one-way valve 5 is closed, most of the high-temperature high-pressure gas is discharged into the circuit breaker shell through the pipeline 14, but part of the high-temperature high-pressure gas still remains in the annular channel 9. After the arc has been extinguished, the pressure in the arc gap 15 will decrease and this part of the gas between the connection point of the pipe 14 to the annular channel 9 and the arc gap 15 may flow back into the arc gap 15, thereby affecting the breaking performance. The connection point of the duct 14 to the annular channel 9 is thus as close as possible to the inlet end 91, so that the back flow of gas in the annular channel 9 to the arc gap 15 is reduced as much as possible.
Part of the arc energy enters the thermal expansion chamber 7 through the annular channel 9 from the arc gap 15, and the other part of the arc energy enters the thermal expansion chamber 7 by means of an axial gas flow. The possible flows of the arc are each provided with a structure into the thermal expansion chamber 7, so that most of the arc energy is utilized.
When the current is turned off, the annular passage 9 and the passage 3 connected to the thermal expansion chamber 7 are closed by the first check valve 5 and the second check valve 4, respectively. The high-pressure gas in the thermal expansion chamber 7 is blown to the arc gap 15 through 71 to take away the free high-temperature plasma between the fractures, thereby extinguishing the arc. Since the thermal expansion chamber 7 has only 71 one arc blowing passage 71, there is no problem that the air flows interfere with each other.
The thermal expansion chamber 7 is preferably shaped in an axisymmetric form along the axis a, which is most convenient to process and install.
More preferably, an opening may be provided in the end of the thermal expansion chamber 7 remote from the arc zone, the opening being closed by a pressure relief valve 16 which operates by the gas pressure exceeding a design threshold. The actuation threshold of the relief valve 16 is designed such that it does not actuate when the circuit breaker is normally open; if other parts of the circuit breaker fail, the circuit breaker cannot normally extinguish the arc. The energy generated by the arc energy is continuously introduced into the thermal expansion chamber 7, so that the air pressure limit in the thermal expansion chamber 7 is raised, and the risk of permanent mechanical damage to the circuit breaker exists. The pressure release valve 16 acts at this time to release the air pressure in the thermal expansion chamber 7, thereby avoiding the mechanical damage of the circuit breaker.
The thermal expansion chamber 7 may be made of a metallic material or a high-strength insulating material. Since the temperature of the air flow entering the thermal expansion chamber 73 is high, the inner walls of the thermal expansion chamber 7 are preferably covered with an ablation resistant insulating material to mitigate thermal damage to the materials comprising it. Such as polytetrafluoroethylene.
In order to allow the axial air flow to rapidly spread to the radial edges of the thermal expansion chamber 7 after entering the thermal expansion chamber 7, a tapered protrusion may be installed at the center of the end of the thermal expansion chamber 7. If the relief valve 16 is installed, this protrusion may be part of the relief valve 16.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims (10)

1. An arc chute, characterized in that it has at least one arcing system comprising a first contact (6) and a second contact (12) fixedly mounted, a third contact (11) which can be repositioned, and a first arcing ring (8) and a second arcing ring (13) mounted on opposite inner sides of the first contact (6) and the second contact (12); the first arcing ring (8) and the second arcing ring (13) form an arc gap (15);
the device also comprises a thermal expansion chamber (7), a functional piece (10) and a pressure cylinder (1);
the thermal expansion chamber (7) is arranged at one side of the first contact (6) away from the second contact (12), and the thermal expansion chamber (7) is communicated with the arc gap (15);
the functional piece (10) is arranged between the first arcing ring (8) and the second arcing ring (13), the functional piece (10) is provided with an annular channel (9) connected with the arc gap (15), an inlet end (91) of the annular channel (9) annularly surrounds the arc gap (15), and an outlet end (92) is connected with the thermal expansion chamber (7);
the outlet end (92) of the annular channel (9) is provided with a first one-way valve (5);
the functional piece (10) is also provided with a pipeline (14), one end of the pipeline (14) is connected with the annular channel (9), and the other end of the pipeline is communicated with a space surrounded by the circuit breaker shell;
the air cylinder (1) is communicated with the thermal expansion chamber (7) through a connecting channel (3), and one end of the connecting channel (3) connected with the thermal expansion chamber (7) is provided with a second one-way valve (4).
2. An arc chute according to claim 1, characterized in that the connection point of the pipe (14) to the annular channel (9) is near the inlet end (91) of the annular channel (9).
3. An arc chute according to claim 1, characterized in that the cross-sectional shape of the annular channel (9) is streamlined.
4. An arc chute as claimed in claim 1, characterized in that the pressure cylinder (1) is located outside the thermal expansion chamber (7) and coaxial with the thermal expansion chamber (7).
5. An arc chute according to claim 1, characterized in that the connecting channels (3) are provided in number and are evenly distributed around the axis of the third contact (11).
6. An arc chute as claimed in claim 1, wherein the functional element (10) is of a high temperature resistant material.
7. An arc chute as claimed in claim 1, wherein the ducts (14) are provided in number and are equispaced about the axis of the third contact (11).
8. An arc chute according to claim 1, characterized in that the volume of the thermal expansion chamber (7) is much larger than the volume of the annular channel (9).
9. An arc chute as claimed in claim 1, wherein the functional element (10) is a single piece or is formed by a combination of several parts.
10. A method of operating an arc chute according to any one of claims 1 to 9, comprising the steps of:
the third contact (11) moves along the axis A, contacts the first contact (6) and the second contact (12) at a closing position, is separated from the first contact (6) and the second contact (12) at a certain distance at a separating position, and pulls an arc gap (15) between the two contacts; the axial energy generated by the combustion arc between the first arcing ring (8) and the second arcing ring (13) enters the thermal expansion chamber (7);
the circumferential energy generated by the electric arc enters the annular channel (9), and when the air pressure in the annular channel (9) is higher than the air pressure in the thermal expansion chamber (7), the first one-way valve (5) is opened to allow the air in the annular channel (9) to enter the thermal expansion chamber (7); when the air pressure in the thermal expansion chamber (7) is higher than the air pressure in the annular channel (9), the first one-way valve (5) is closed;
in the early stage of arc combustion, the air pressure in the thermal expansion chamber (7) is lower than the air pressure in the annular channel (9), part of radial energy generated by the arc is discharged into a space surrounded by the circuit breaker shell through a pipeline (14), and the other part of radial energy enters the thermal expansion chamber (7) through the annular channel (9) to heat the gas in the thermal expansion chamber; with the increase of the arcing time, the air pressure in the thermal expansion chamber (7) is higher than that of the annular channel (9), at the moment, the first one-way valve (5) is closed, and radial energy generated by the electric arc is discharged into a space surrounded by the circuit breaker shell through the pipeline (14);
when the small current is cut off, the energy of the electric arc is insufficient to enable the thermal expansion chamber (7) to build enough pressure, the air pressing cylinder (1) is needed to assist in building the pressure, and when the air pressure in the air pressing cylinder (1) is higher than the air pressure in the thermal expansion chamber (7), the second one-way valve (4) is opened to allow the air in the air pressing cylinder (1) to enter the thermal expansion chamber (7); when the air pressure in the thermal expansion chamber (7) is higher than the air pressure in the pressure cylinder (1), the second one-way valve (4) is closed.
CN202310214190.6A 2023-03-07 2023-03-07 Arc extinguishing chamber and working method thereof Active CN116153734B (en)

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CN202310214190.6A CN116153734B (en) 2023-03-07 2023-03-07 Arc extinguishing chamber and working method thereof

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Application Number Priority Date Filing Date Title
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CN116153734B CN116153734B (en) 2024-08-30

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654808A1 (en) * 1993-11-24 1995-05-24 Schneider Electric Sa Autoexpansion circuit breaker with insulating gas
CN1232280A (en) * 1998-04-14 1999-10-20 Abb研究有限公司 Circuit breaker
CN101828242A (en) * 2007-10-16 2010-09-08 Abb研究有限公司 Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve
CN102945768A (en) * 2012-11-07 2013-02-27 中国西电电气股份有限公司 Arc-control device of breaker
CN103000444A (en) * 2012-11-22 2013-03-27 北京航空航天大学 Self-energy sulfur hexafluoride (SF6) circuit breaker double nozzle type arc extinguishing chamber and arc extinguishing method thereof
KR101386134B1 (en) * 2012-11-28 2014-04-17 한국전기연구원 Self-blast type gas circuit breaker with pressure controllable thermal chamber
CN112002605A (en) * 2020-08-25 2020-11-27 西安西电开关电气有限公司 Switch device and arc extinguish chamber thereof
CN112038967A (en) * 2020-08-25 2020-12-04 国核电力规划设计研究院有限公司 Electric equipment and switch equipment thereof
CN112289628A (en) * 2020-10-20 2021-01-29 西安西电开关电气有限公司 Arc extinguish chamber with double pressure expansion chambers
CN115312360A (en) * 2022-07-15 2022-11-08 正泰电气股份有限公司 Cut-off device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654808A1 (en) * 1993-11-24 1995-05-24 Schneider Electric Sa Autoexpansion circuit breaker with insulating gas
CN1232280A (en) * 1998-04-14 1999-10-20 Abb研究有限公司 Circuit breaker
CN101828242A (en) * 2007-10-16 2010-09-08 Abb研究有限公司 Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve
CN102945768A (en) * 2012-11-07 2013-02-27 中国西电电气股份有限公司 Arc-control device of breaker
CN103000444A (en) * 2012-11-22 2013-03-27 北京航空航天大学 Self-energy sulfur hexafluoride (SF6) circuit breaker double nozzle type arc extinguishing chamber and arc extinguishing method thereof
KR101386134B1 (en) * 2012-11-28 2014-04-17 한국전기연구원 Self-blast type gas circuit breaker with pressure controllable thermal chamber
CN112002605A (en) * 2020-08-25 2020-11-27 西安西电开关电气有限公司 Switch device and arc extinguish chamber thereof
CN112038967A (en) * 2020-08-25 2020-12-04 国核电力规划设计研究院有限公司 Electric equipment and switch equipment thereof
CN112289628A (en) * 2020-10-20 2021-01-29 西安西电开关电气有限公司 Arc extinguish chamber with double pressure expansion chambers
CN115312360A (en) * 2022-07-15 2022-11-08 正泰电气股份有限公司 Cut-off device

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