CN115798887A - Power transformer with arc control device - Google Patents
Power transformer with arc control device Download PDFInfo
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- CN115798887A CN115798887A CN202211452567.3A CN202211452567A CN115798887A CN 115798887 A CN115798887 A CN 115798887A CN 202211452567 A CN202211452567 A CN 202211452567A CN 115798887 A CN115798887 A CN 115798887A
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- 230000007246 mechanism Effects 0.000 claims description 73
- 230000000903 blocking effect Effects 0.000 claims description 44
- 230000017525 heat dissipation Effects 0.000 claims description 30
- 230000000087 stabilizing effect Effects 0.000 claims description 26
- 230000009466 transformation Effects 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The invention discloses a power transformer with an arc extinguishing device, and relates to the technical field of power transformers. The invention solves the problem that the voltage and the current of the device are easy to change excessively when the existing transformer is used, so that arc light short circuit occurs, and the internal equipment of the device is damaged.
Description
Technical Field
The invention relates to a power transformer, relates to the technical field of power transformation, and particularly relates to a power transformer with an arc extinguishing device.
Background
With the rapid development of the whole national economy, the demand of a transformer is continuously increased, the power transformer is one of the most important devices in a power system and is the basis for ensuring the reliability of power supply, the transformer is composed of two or more coil windings wound on the same iron core, the windings are connected through an alternating magnetic field and work according to the electromagnetic induction principle, the installation position of the transformer is convenient to operate, overhaul and transport, and a safe and reliable place is selected.
In the prior art, a chinese patent document with publication number CN113690030B and publication date 2022, 04/19 is proposed to solve the above-mentioned technical problems, and the technical solution disclosed in the patent document is as follows: the utility model provides a transformer core structure and power transformer, including the shell, fixed mounting has the bottom plate cavity in the shell, the bottom plate cavity is used for protecting the internal plant, fixed mounting has the fluting support frame on the bottom plate cavity, the transformer part is located on the fluting support frame, the transformer part is used for making the electric current can change the voltage power of output when this equipment, be provided with adjusting part on the transformer part, adjusting part is used for adjusting the capacity size of the voltage power control transformer of output according to the power consumption load, the transformer part is including silicon steel iron chip, main coil, sealed baffle, secondary coil one, secondary coil two, secondary coil three, wiring board and silicon steel terminal.
In the process of practical use of the technology, the following problems can be caused:
1. when the existing transformer is used, the voltage and the current of the device are easy to change excessively, so that the short circuit of arc light occurs, and the damage phenomenon of the internal equipment of the device is caused;
2. when the existing transformer is used, when the transformer conducts current, the transformers mutually generate power circulation, and the problem that the voltage of the transformer is easily disordered is caused.
Disclosure of Invention
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a power transformer with arc control device, includes transformer main body, transformer main body's top fixed mounting has voltage binding post, just transformer main body's the left and right sides fixed mounting has the heat dissipation main part, transformer main body's bottom fixed mounting has stable main part, just transformer main body's inside is provided with the arc extinguishing main part, the inboard fixed mounting of arc extinguishing main part has electric power separation main part.
The transformer main body includes a transforming unit.
The heat dissipation body includes a heat dissipation unit.
The stabilization body includes a stabilization unit.
The arc extinguishing main body comprises an arc extinguishing unit.
The power barrier body includes an isolation unit.
The technical scheme of the invention is further improved as follows: the voltage unit comprises a voltage transformation unit and a voltage transformation mechanism, the top of the connecting end is fixedly installed on the inner wall of the transformer main body, and the bottom of the connecting end is fixedly installed on the top of the arc extinguishing main body.
The technical scheme of the invention is further improved as follows: the top of the transformation mechanism is fixedly arranged at the bottom of the arc extinguishing main body, and the bottom of the transformation mechanism is fixedly arranged on the inner wall of the transformer main body.
The technical scheme of the invention is further improved as follows: the heat dissipation unit comprises a control mechanism, a fixed end, a driving mechanism and a heat dissipation mechanism, wherein the outer side of the control mechanism is fixedly installed on the inner wall of the heat dissipation main body, and the outer side of the fixed end is fixedly installed on the inner side of the control mechanism.
By adopting the technical scheme, the driving mechanism is controlled by the control mechanism in the heat dissipation main body to control the heat dissipation mechanism.
The technical scheme of the invention is further improved as follows: the upper end and the lower end of the driving mechanism are fixedly arranged on the inner side of the fixed end, and the inner side of the heat dissipation mechanism is fixedly arranged on two sides of the surface of the driving mechanism.
By adopting the technical scheme, the driving mechanism is utilized to control the heat dissipation mechanism to generate wind power to blow the inside of the device, heat generated in the device is evacuated, and overheating in the device is avoided.
The technical scheme of the invention is further improved as follows: the stabilizing unit comprises a main body base, a stabilizing spring tube and a supporting return frame, the top of the main body base is fixedly installed at the bottom of the stabilizing main body, the upper end and the lower end of the stabilizing spring tube are fixedly installed on the inner wall of the supporting return frame, and the periphery of the surface of the supporting return frame is fixedly installed on the inner wall of the stabilizing main body.
Adopt above-mentioned technical scheme, the inside stable spring pipe of the inside stable main part of utilization in this scheme stabilizes the device, avoids the device operation to take place the shake, prevents that inside transformer from receiving the shake influence.
The technical scheme of the invention is further improved as follows: the arc extinguishing unit includes main contact, contact link, vacuum interrupter, auxiliary contact, controls mechanism, arc extinguishing grid, the outside fixed mounting of main contact is on the surface of transformer mechanism, contact link bottom fixed mounting is at vacuum interrupter's top, vacuum interrupter's bottom fixed mounting is on the inner wall of arc extinguishing main part, auxiliary contact's inboard fixed mounting is on vacuum interrupter's surface, the inboard fixed mounting who controls the mechanism is on vacuum interrupter's surface, the left side fixed mounting of arc extinguishing grid is on vacuum interrupter's surface.
Adopt above-mentioned technical scheme, dredge the vacuum interrupter through the inside main contact of arc extinguishing main part and the inside current of auxiliary contact to the transformer mechanism among this scheme, eliminate electric arc with voltage and current wherein, prevent that the electric arc short circuit from appearing in the device.
The technical scheme of the invention is further improved as follows: isolated unit includes that center support plate, connecting rod, circuit block the end, block that electric power end, electric current dredge guide pole, electric power block the circle, fixed mounting is on the inner wall of electric power separation main part around the surface of center support plate, the inboard fixed mounting of connecting rod is in the left and right sides of center support plate, just the inboard fixed mounting that the circuit blocked the end is in the outside of connecting rod, block the inboard fixed mounting that the electric power end blocks the outside of end, just block the outside fixed mounting of electric power end in the inboard of electric power separation main part, the inboard fixed mounting that the electric current dredges the guide pole is around the surface that blocks the electric power end, the inboard fixed mounting that the electric power blocked the circle dredges the outside of guide pole at the electric current.
By adopting the technical scheme, the current is blocked by the blocking power end in the power blocking main body, then the current is conducted to the power blocking ring by the current dredging rod to be transmitted, and the current is blocked by the power blocking ring.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
1. the invention provides a power transformer with an arc extinguishing device, which aims to provide a main contact, a contact connecting end, a vacuum arc extinguishing chamber, an auxiliary contact, a control mechanism and an arc extinguishing grid frame, solves the problem that when the existing transformer is used, the voltage and the current of the device are easy to change excessively, so that arc short circuit is caused, and the damage phenomenon of internal equipment of the device is caused.
2. The invention provides a power transformer with an arc extinguishing device, which aims to provide a central support plate, a connecting rod, a circuit blocking end, a blocking power end, a current dredging rod and a power blocking ring, solves the problem that the voltage of the transformer is easily disordered due to the fact that the transformers mutually generate power circulation when the current is dredged by the transformer when the existing transformer is used, and achieves the purpose that the transformers are blocked by a blocking mechanism in a group mode in the using process of the transformer, the mutual circulation of the power of the transformers is prevented, and therefore the voltage disorder of the transformers is prevented.
3. The invention provides a power transformer with an arc extinguishing device, which aims to be provided with a control mechanism, a fixed end, a driving mechanism and a heat dissipation mechanism, solves the problem that the internal facilities of the device are overloaded and damaged due to continuous heat generation in the device in the use process of the existing transformer, and achieves the purpose that the heat generated in the device is dissipated through the heat dissipation mechanism in the use process of the transformer by combining the above structures, thereby avoiding the overheating in the device and preventing the mechanism from being damaged.
4. The invention provides a power transformer with an arc extinguishing device, which aims to provide a main body base, a stable spring tube and a support return frame, solves the problem that the transformer in the device is easily affected by shaking due to the fact that the device is easy to shake slightly when the existing transformer is in use, and achieves the purpose that the device is stabilized through a stabilizing mechanism in the use process of the transformer, the shaking of the device in operation is avoided, and the influence of shaking on the internal transformer is prevented through the structural combination.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of a transformer body according to the present invention;
FIG. 3 is a schematic cross-sectional view of the heat dissipating body according to the present invention;
FIG. 4 is a cross-sectional structural schematic view of a stabilization body of the present invention;
FIG. 5 is a schematic cross-sectional view of an arc extinguishing main body according to the present invention;
fig. 6 is a schematic cross-sectional structure view of the electric power blocking main body of the present invention.
In the figure: 1. a transformer body; 11. a connecting end; 12. a voltage transformation mechanism; 2. a voltage wiring terminal; 3. a heat dissipating main body; 31. a control mechanism; 32. a fixed end; 33. a drive mechanism; 34. a heat dissipation mechanism; 4. a stabilizing body; 41. a main body base; 42. stabilizing the spring tube; 43. supporting the shape returning frame; 5. an arc extinguishing main body; 51. a main contact; 52. a contact connecting end; 53. a vacuum arc-extinguishing chamber; 54. an auxiliary contact; 55. an operating mechanism; 56. an arc extinguishing grid; 6. a power blocking body; 61. a center support plate; 62. a connecting rod; 63. a circuit blocking end; 64. blocking the power terminal; 65. a current thinning rod; 66. and a power blocking ring.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
example 1
As shown in fig. 1 to 6, the present invention provides a power transformer with an arc extinguishing device, including a transformer body 1, a voltage connection terminal 2 fixedly installed on the top of the transformer body 1, and the left and right sides of the transformer body 1 are fixedly provided with the heat dissipation body 3, the bottom of the transformer body 1 is fixedly provided with the stabilization body 4, and the transformer body 1 is internally provided with an arc extinguishing main body 5, the inner side of the arc extinguishing main body 5 is fixedly provided with an electric power separation main body 6, the transformer body 1 comprises a voltage transformation unit, the heat dissipation main body 3 comprises a heat dissipation unit, the stabilization main body 4 comprises a stabilization unit, the arc extinguishing main body 5 comprises an arc extinguishing unit, the electric power separation main body 6 comprises an isolation unit, the voltage transformation unit comprises a connection end 11 and a voltage transformation mechanism 12, the top of the connection end 11 is fixedly arranged on the inner wall of the transformer body 1, the bottom of the connecting end 11 is fixedly arranged at the top of the arc extinguishing main body 5, the top of the transformation mechanism 12 is fixedly arranged at the bottom of the arc extinguishing main body 5, and the bottom of the transformer mechanism 12 is fixedly arranged on the inner wall of the transformer main body 1, the heat dissipation unit comprises a control mechanism 31, a fixed end 32, a driving mechanism 33 and a heat dissipation mechanism 34, the outer side of the control mechanism 31 is fixedly arranged on the inner wall of the heat dissipation main body 3, the outer side of the fixed end 32 is fixedly arranged on the inner side of the control mechanism 31, the upper end and the lower end of the driving mechanism 33 are fixedly arranged on the inner side of the fixed end 32, the control mechanism 31 in the heat dissipation main body 3 is used for controlling the driving mechanism 33 to control the heat dissipation mechanism 34, the driving mechanism 33 is used for controlling the heat dissipation mechanism 34 to generate wind power to blow the interior, heat generated inside the device is dissipated to prevent the inside of the device from being overheated, and the inner sides of the heat dissipation mechanisms 34 are fixedly installed on both sides of the surface of the driving mechanism 33.
Example 2
As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: the stabilizing unit comprises a main body base 41, a stabilizing spring tube 42 and a supporting return frame 43, wherein the top of the main body base 41 is fixedly arranged at the bottom of the stabilizing main body 4, the upper end and the lower end of the stabilizing spring tube 42 are fixedly arranged on the inner wall of the supporting return frame 43, the stabilizing spring tube 42 in the stabilizing main body 4 is used for stabilizing the device, the device is prevented from shaking in operation, the internal transformer is prevented from being influenced by shaking, the periphery of the surface of the supporting return frame 43 is fixedly arranged on the inner wall of the stabilizing main body 4, the arc extinguishing unit comprises a main contact 51, a contact connecting end 52, a vacuum arc extinguishing chamber 53, an auxiliary contact 54, a control mechanism 55 and an arc extinguishing grid 56, the outer side of the main contact 51 is fixedly arranged on the surface of the transformation mechanism 12, the bottom of the contact connecting end 52 is fixedly arranged at the top of the vacuum arc extinguishing chamber 53, and the bottom of the vacuum arc extinguishing chamber 53 is fixedly arranged on the inner wall of the main body 5, the inner side of the auxiliary contact 54 is fixedly arranged on the surface of the vacuum arc-extinguishing chamber 53, the current in the transformer mechanism 12 is conducted to the vacuum arc-extinguishing chamber 53 through the main contact 51 and the auxiliary contact 54 in the arc-extinguishing main body 5, the voltage and the current are extinguished, the device is prevented from generating arc short circuit, the inner side of the control mechanism 55 is fixedly arranged on the surface of the vacuum arc-extinguishing chamber 53, the left side of the arc-extinguishing grid 56 is fixedly arranged on the surface of the vacuum arc-extinguishing chamber 53, the isolation unit comprises a central support plate 61, a connecting rod 62, a circuit blocking end 63, a blocking power end 64, a current conducting rod 65 and a power blocking ring 66, the periphery of the surface of the central support plate 61 is fixedly arranged on the inner wall of the power blocking main body 6, the inner sides of the connecting rod 62 are fixedly arranged on the left side and the right side of the central support plate 61, and the inner sides of the circuit blocking end 63 are fixedly arranged on the outer side of the connecting rod 62, the inside of the blocking power terminal 64 is fixedly installed at the outside of the circuit blocking terminal 63, the outside of the blocking power terminal 64 is fixedly installed at the inside of the electric power blocking body 6, the current is blocked by the blocking power terminal 64 inside the electric power blocking body 6, then the current is conducted to the electric power blocking ring 66 by the current conducting rod 65 and is transmitted, the current is blocked by the electric power blocking ring 66, the inside of the current conducting rod 65 is fixedly installed around the surface of the blocking power terminal 64, and the inside of the electric power blocking ring 66 is fixedly installed at the outside of the current conducting rod 65.
The operation principle of the power transformer with the arc extinguishing device will be described in detail below.
As shown in fig. 1 to 6, when in use, the current in the transformer mechanism 12 is conducted to the vacuum arc-extinguishing chamber 53 through the main contact 51 and the auxiliary contact 54 in the arc-extinguishing main body 5, the voltage and the current are extinguished therein, the arc short circuit of the device is prevented, then the driving mechanism 33 is controlled by the control mechanism 31 in the heat-dissipating main body 3 to control the heat-dissipating mechanism 34, so that the heat-dissipating mechanism 34 generates wind power to blow the inside, the heat generated in the device is dissipated, the overheating in the device is avoided, the current is blocked through the blocking power terminal 64 in the power blocking main body 6, then the current is conducted to the power blocking ring 66 by the current conducting rod 65 to be transmitted, the current is blocked by the power blocking ring 66, the device is stabilized by the stabilizing spring tube 42 in the stabilizing main body 4, the jitter of the operation of the device is avoided, and the internal transformer is prevented from being influenced by the jitter.
The invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.
Claims (8)
1. The utility model provides a power transformer with arc control device, includes transformer main body (1), its characterized in that: a voltage wiring terminal (2) is fixedly mounted at the top of the transformer main body (1), heat dissipation main bodies (3) are fixedly mounted on the left side and the right side of the transformer main body (1), a stabilizing main body (4) is fixedly mounted at the bottom of the transformer main body (1), an arc extinguishing main body (5) is arranged inside the transformer main body (1), and an electric power blocking main body (6) is fixedly mounted on the inner side of the arc extinguishing main body (5);
the transformer body (1) comprises a transformation unit;
the heat dissipation body (3) comprises a heat dissipation unit;
the stabilizing body (4) comprises a stabilizing unit;
the arc extinguishing main body (5) comprises an arc extinguishing unit;
the power barrier body (6) comprises an insulating unit.
2. A power transformer with an arc extinguishing device according to claim 1, characterized in that: the voltage unit comprises a voltage transformation unit and a voltage transformation mechanism (12), wherein the voltage transformation unit comprises a connecting end (11) and a voltage transformation mechanism, the top of the connecting end (11) is fixedly installed on the inner wall of the transformer main body (1), and the bottom of the connecting end (11) is fixedly installed on the top of the arc extinguishing main body (5).
3. A power transformer with an arc extinguishing device according to claim 2, characterized in that: the top of the transformation mechanism (12) is fixedly arranged at the bottom of the arc extinguishing main body (5), and the bottom of the transformation mechanism (12) is fixedly arranged on the inner wall of the transformer main body (1).
4. A power transformer with an arc extinguishing device according to claim 1, characterized in that: the heat dissipation unit comprises a control mechanism (31), a fixed end (32), a driving mechanism (33) and a heat dissipation mechanism (34), wherein the outer side of the control mechanism (31) is fixedly installed on the inner wall of the heat dissipation main body (3), and the outer side of the fixed end (32) is fixedly installed on the inner side of the control mechanism (31).
5. The power transformer with the arc extinguishing apparatus according to claim 4, wherein: the upper end and the lower end of the driving mechanism (33) are fixedly arranged on the inner side of the fixed end (32), and the inner side of the heat dissipation mechanism (34) is fixedly arranged on two sides of the surface of the driving mechanism (33).
6. A power transformer with an arc extinguishing device according to claim 1, characterized in that: the stabilizing unit comprises a main body base (41), a stabilizing spring tube (42) and a supporting return frame (43), wherein the top of the main body base (41) is fixedly arranged at the bottom of the stabilizing main body (4), the upper end and the lower end of the stabilizing spring tube (42) are fixedly arranged on the inner wall of the supporting return frame (43), and the surface of the supporting return frame (43) is fixedly arranged on the inner wall of the stabilizing main body (4) at the periphery.
7. A power transformer with an arc extinguishing device according to claim 1, characterized in that: the arc extinguishing unit includes main contact (51), contact link (52), vacuum interrupter (53), auxiliary contact (54), controls mechanism (55), arc extinguishing grid (56), the outside fixed mounting of main contact (51) is on the surface of transformer mechanism (12), contact link (52) bottom fixed mounting is at the top of vacuum interrupter (53), the bottom fixed mounting of vacuum interrupter (53) is on the inner wall of arc extinguishing body (5), the inboard fixed mounting of auxiliary contact (54) is on the surface of vacuum interrupter (53), the inboard fixed mounting of controlling mechanism (55) is on the surface of vacuum interrupter (53), the left side fixed mounting of arc extinguishing grid (56) is on the surface of vacuum interrupter (53).
8. A power transformer with an arc extinguishing device according to claim 1, characterized in that: the isolation unit comprises a central support plate (61), a connecting rod (62), a circuit blocking end (63), a blocking power end (64), a current dredging rod (65) and a power blocking ring (66), wherein the periphery of the surface of the central support plate (61) is fixedly installed on the inner wall of the power blocking main body (6), the inner side of the connecting rod (62) is fixedly installed on the left side and the right side of the central support plate (61), the inner side of the circuit blocking end (63) is fixedly installed on the outer side of the connecting rod (62), the inner side of the blocking power end (64) is fixedly installed on the outer side of the circuit blocking end (63), the outer side of the blocking power end (64) is fixedly installed on the inner side of the power blocking main body (6), the inner side of the current dredging rod (65) is fixedly installed on the periphery of the surface of the blocking power end (64), and the inner side of the power blocking ring (66) is fixedly installed on the outer side of the current dredging rod (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211452567.3A CN115798887A (en) | 2022-11-21 | 2022-11-21 | Power transformer with arc control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211452567.3A CN115798887A (en) | 2022-11-21 | 2022-11-21 | Power transformer with arc control device |
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| Publication Number | Publication Date |
|---|---|
| CN115798887A true CN115798887A (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211452567.3A Pending CN115798887A (en) | 2022-11-21 | 2022-11-21 | Power transformer with arc control device |
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| Country | Link |
|---|---|
| CN (1) | CN115798887A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664153Y (en) * | 2003-11-18 | 2004-12-15 | 北京北开电气股份有限公司 | A vacuum circuit breaker |
| CN101702511A (en) * | 2009-11-06 | 2010-05-05 | 冯骏明 | Intelligent oil-immersed transformer |
| CN209766190U (en) * | 2019-04-18 | 2019-12-10 | 广东粤特变压器有限公司 | transformer with shock-absorbing function |
| CN211507315U (en) * | 2020-01-21 | 2020-09-15 | 国网江苏省电力有限公司经济技术研究院 | Anti-collision device for power transformer |
| CN217521902U (en) * | 2022-06-21 | 2022-09-30 | 爱启（厦门）电气技术有限公司 | Intelligent integrated high-voltage alternating-current vacuum circuit breaker module |
-
2022
- 2022-11-21 CN CN202211452567.3A patent/CN115798887A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664153Y (en) * | 2003-11-18 | 2004-12-15 | 北京北开电气股份有限公司 | A vacuum circuit breaker |
| CN101702511A (en) * | 2009-11-06 | 2010-05-05 | 冯骏明 | Intelligent oil-immersed transformer |
| CN209766190U (en) * | 2019-04-18 | 2019-12-10 | 广东粤特变压器有限公司 | transformer with shock-absorbing function |
| CN211507315U (en) * | 2020-01-21 | 2020-09-15 | 国网江苏省电力有限公司经济技术研究院 | Anti-collision device for power transformer |
| CN217521902U (en) * | 2022-06-21 | 2022-09-30 | 爱启（厦门）电气技术有限公司 | Intelligent integrated high-voltage alternating-current vacuum circuit breaker module |
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