CN215934276U - 35kV inflatable switch cabinet - Google Patents
35kV inflatable switch cabinet Download PDFInfo
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- CN215934276U CN215934276U CN202121660132.9U CN202121660132U CN215934276U CN 215934276 U CN215934276 U CN 215934276U CN 202121660132 U CN202121660132 U CN 202121660132U CN 215934276 U CN215934276 U CN 215934276U
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- station isolating
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Abstract
The utility model discloses a 35kV inflatable switch cabinet, which comprises a cabinet body, wherein a plurality of air chambers are arranged in the cabinet body, the air chambers are a first air chamber, a second air chamber, a third air chamber, a fourth air chamber and a fifth air chamber from top to bottom in sequence, a sealing ring is arranged at the joint of a shell of each air chamber, a pressure relief disc is arranged on the outer side of each air chamber, each pressure relief disc is connected with a pressure relief channel arranged in the cabinet body, a bus connector is arranged in the first air chamber, a three-station isolating switch is arranged in the second air chamber, the bus connector is connected with a moving contact of the three-station isolating switch, three vacuum bubbles are arranged in the third air chamber, each vacuum bubble is respectively connected with one of the three-station isolating switches, a cable socket is arranged below each vacuum bubble, a three-station isolating switch operating mechanism is arranged on the left side of the third air chamber, a circuit breaker interlocking device is arranged in the fourth air chamber, and a circuit breaker operating mechanism is arranged on the left side of the fourth air chamber, a current transformer is arranged in the fifth air chamber, and a grounding bar is arranged on the left side of the fifth air chamber.
Description
Technical Field
The utility model relates to a 35kV inflatable switch cabinet.
Background
The switch cabinet is a device which is used in a large amount in a power distribution network, the conventional switch cabinet mainly adopts air insulation, the requirement on the operating environment is high, the conventional switch cabinet can not be used under severe conditions generally, and the safe use of each component can be ensured only by meeting a certain insulation distance under the high-voltage condition, so that the size of the cabinet body is large; in addition, the space in the switch cabinet is limited, and the volume of the permanent magnet vacuum switch is large, so that the application in the switch cabinet is limited. The existing switch cabinet which is widely applied and has good electrical insulating property and moderate cabinet body size mainly adopts an inflatable switch cabinet filled with insulating gas, the inflatable switch cabinet is formed by combining measuring equipment, a circuit breaker, the insulating gas and various protection devices, and the inflatable switch cabinet is widely applied to places such as transformer substations, power plants and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a 35kV inflatable switch cabinet.
A35 kV inflatable switch cabinet comprises a cabinet body, wherein a plurality of air chambers are arranged in the cabinet body, the air chambers are a first air chamber, a second air chamber, a third air chamber, a fourth air chamber and a fifth air chamber from top to bottom in sequence, a sealing ring is arranged at the joint of a shell of each air chamber, a pressure relief disc is arranged on the outer side of each air chamber and is connected with a pressure relief channel arranged in the cabinet body, a bus connector is arranged in the first air chamber, a three-station isolating switch is arranged in the second air chamber, the bus connector is connected with a moving contact of the three-station isolating switch, three vacuum bubbles are arranged in the third air chamber, each vacuum bubble is respectively connected with one of the three-station isolating switches, a cable socket is arranged below each vacuum bubble, a three-station isolating switch operating mechanism is arranged on the left side of the third air chamber, a breaker interlocking device is arranged in the fourth air chamber, and a breaker operating mechanism is arranged on the left side of the fourth air chamber, a current transformer is arranged in the fifth air chamber, and a grounding bar is arranged on the left side of the fifth air chamber.
As a further improvement, a three-phase sleeve is arranged on the three-position isolating switch.
As a further improvement, each air chamber is internally provided with a drying agent and a harmful gas absorbent.
As a further improvement, the right side of the second air chamber is provided with a comprehensive protection device.
As a further improvement, the connecting plate of each air chamber is of a plug-in structure.
As a further improvement, the gas filled in the gas chamber is SF 6.
Has the advantages that:
the utility model has the advantages of ingenious design, small installation area which only accounts for 40 percent of the existing armored switch cabinet, high safety, and no electric shock hazard for operators because all the electrified parts are sealed in the grounded stainless steel air chamber, and good reliability, all the electrified parts and the constituent equipment are sealed in the compartment filled with SF6 air, thereby being not influenced by weather, preventing the insulation from being damaged by dust, pollution and the like, and keeping the original excellent characteristics. The main electrified body is sealed in the air chamber, therefore the security is high, and six are that bus air chamber and circuit breaker air chamber separate, and the maintenance of an air chamber does not influence another air chamber, and management, maintenance convenience.
Drawings
Fig. 1 is a schematic diagram of the general structure of a 35kV gas-filled switchgear;
1. the cabinet body 2, the pressure relief disc 3, the pressure relief channel 4, the bus connector 5, the three-station isolating switch operating mechanism 6, the moving contact 7, the vacuum bubble 8, the cable socket 9, the circuit breaker interlocking device 10, the circuit breaker operating mechanism 11, the current transformer 12 and the grounding bar.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1, a 35kV gas-filled switchgear includes a cabinet body 1, a pressure relief disc 2, a pressure relief channel 3, a bus connector 4, a three-position disconnecting switch operating mechanism 5, a moving contact 6, a vacuum bulb 7, a cable socket 8, a breaker interlocking device 9, a breaker operating mechanism 10, a current transformer 11 and a ground bar 12.
A35 kV inflatable switch cabinet comprises a cabinet body, wherein a plurality of air chambers are arranged in the cabinet body, the air chambers are a first air chamber, a second air chamber, a third air chamber, a fourth air chamber and a fifth air chamber from top to bottom in sequence, a sealing ring is arranged at the joint of a shell of each air chamber, a pressure relief disc is arranged on the outer side of each air chamber and is connected with a pressure relief channel arranged in the cabinet body, a bus connector is arranged in the first air chamber, a three-station isolating switch is arranged in the second air chamber, the bus connector is connected with a moving contact of the three-station isolating switch, three vacuum bubbles are arranged in the third air chamber, each vacuum bubble is respectively connected with one of the three-station isolating switches, a cable socket is arranged below each vacuum bubble, a three-station isolating switch operating mechanism is arranged on the left side of the third air chamber, a breaker interlocking device is arranged in the fourth air chamber, and a breaker operating mechanism is arranged on the left side of the fourth air chamber, a current transformer is arranged in the fifth air chamber, and a grounding bar is arranged on the left side of the fifth air chamber.
And a three-phase sleeve is arranged on the three-station isolating switch.
Wherein, each air chamber is provided with a drying agent and a harmful gas absorbent.
Wherein, the right side of the second air chamber is provided with a comprehensive protection device.
Wherein, the connecting plate of each air chamber is the structure of plug-in.
Wherein, the gas filled in the gas chamber is SF 6.
The equipment is made of materials which are simple and reliable, have good thermal, electric and mechanical properties and enough strength, and structurally ensures the safety, simplicity and convenience of normal operation and maintenance. And the modular design is adopted, so that the interchangeability of structural components is ensured.
Each cabinet of the device is an independent unit, and the independent unit is filled with gas with rated pressure, so that the device does not need to be refilled on site, and great convenience is brought to aspects such as system expansion. When the system is expanded, the construction can be carried out only by stopping the electricity of the bus or the connecting loop.
The high-voltage live part is sealed in a sealed gas chamber filled with SF6 gas, and the shell is reliably grounded.
In order to minimize the gas leakage of the cabinet, a sealing ring is adopted when the sealing plate and the components are installed, and an absorbent capable of absorbing moisture and other harmful gases is placed in the gas chamber.
In consideration of convenience in maintenance and inspection, each unit is designed to be of a plug-in structure, so that the damage caused by temperature change, errors in assembly, relative unevenness of a concrete foundation, excessive deformation in an earthquake and the like can be met.
When an internal arcing fault occurs, in order to safely release high-temperature and high-pressure gas after internal arcing, the gas chamber of the equipment is provided with a pressure relief disc, and the high-temperature and high-pressure gas can be released to a safe processing place through a pressure relief channel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A35 kV inflatable switch cabinet is characterized by comprising a cabinet body, wherein a plurality of air chambers are arranged in the cabinet body, the air chambers are a first air chamber, a second air chamber, a third air chamber, a fourth air chamber and a fifth air chamber from top to bottom in sequence, a sealing ring is arranged at the joint of a shell of each air chamber, a pressure relief disc is arranged on the outer side of each air chamber, each pressure relief disc is connected with a pressure relief channel arranged in the cabinet body, a bus connector is arranged in the first air chamber, a three-station isolating switch is arranged in the second air chamber, the bus connector is connected with a moving contact of the three-station isolating switch, three vacuum bubbles are arranged in the third air chamber, each vacuum bubble is respectively connected with one of the three-station isolating switches, a cable socket is arranged below each vacuum bubble, a three-station isolating switch operating mechanism is arranged on the left side of the third air chamber, a breaker interlocking device is arranged in the fourth air chamber, and a breaker operating mechanism is arranged on the left side of the fourth air chamber, a current transformer is arranged in the fifth air chamber, and a grounding bar is arranged on the left side of the fifth air chamber.
2. The 35kV inflatable switch cabinet according to claim 1, wherein a three-phase bushing is arranged on the three-position disconnecting switch.
3. The 35kV gas-filled switchgear as claimed in claim 1, wherein each air chamber is provided with a desiccant and a harmful gas absorbent.
4. The 35kV gas-filled type switch cabinet according to claim 1, wherein a comprehensive protection device is arranged at the right side of the second gas chamber.
5. A 35kV gas-filled switchgear as claimed in claim 1, wherein the connecting plate of each gas chamber is of a plug-in structure.
6. The 35kV gas-filled switchgear as claimed in claim 1, wherein the gas filled in the gas chamber is SF 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121660132.9U CN215934276U (en) | 2021-07-21 | 2021-07-21 | 35kV inflatable switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121660132.9U CN215934276U (en) | 2021-07-21 | 2021-07-21 | 35kV inflatable switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215934276U true CN215934276U (en) | 2022-03-01 |
Family
ID=80401178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121660132.9U Active CN215934276U (en) | 2021-07-21 | 2021-07-21 | 35kV inflatable switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215934276U (en) |
-
2021
- 2021-07-21 CN CN202121660132.9U patent/CN215934276U/en active Active
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