CN216698207U - SF6 load switch - Google Patents
SF6 load switch Download PDFInfo
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- CN216698207U CN216698207U CN202122647000.9U CN202122647000U CN216698207U CN 216698207 U CN216698207 U CN 216698207U CN 202122647000 U CN202122647000 U CN 202122647000U CN 216698207 U CN216698207 U CN 216698207U
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- load switch
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Abstract
The utility model discloses an SF6 load switch, which comprises a box body, wherein the box body is divided into a high-pressure air chamber and a driving mechanism chamber by a partition plate; a three-station operating mechanism is arranged in the driving mechanism chamber; a three-position switch device is arranged in the high-pressure air chamber; the output end of the three-position operating mechanism is connected to the three-position switch device; an operation panel is fixed outside the box body and connected to the driving mechanism chamber; in a preferred embodiment of the present invention, the SF6 load switch further includes a three-phase insulation terminal; the three-phase insulation terminal comprises an upper three-phase insulator and a lower three-phase insulator which are respectively arranged at the left side and the right side of the box body. The SF6 load switch is installed on the incoming line side of the transformer, and utilizes SF6 to extinguish arc, SF6 is insulated, so that the high voltage of the transformer of an overhead line system can be cut off, the arc extinguishing and insulating performances of the switch are excellent, the reliable switching-on, switching-off and grounding of the switch are ensured, and the power failure maintenance of the transformer is facilitated.
Description
Technical Field
The utility model relates to the technical field of power switch equipment, in particular to an SF6 load switch.
Background
For the outdoor network transformer powered by an overhead line system, the outdoor network transformer works in outdoor moist and condensation environments for a long time, so that the switch insulation performance of a high-voltage indoor air insulation high-voltage cabinet is seriously influenced, the insulation performance is reduced, distribution equipment is damaged, and the power supply safety is seriously influenced. The high-voltage power of the transformer of the overhead line system cannot be cut off in time by the common transformer in the air, the power failure maintenance is complex, the cost is high, and the reliability is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an SF6 load switch, which is used for solving at least one technical problem and can cut off the high voltage of a transformer of an overhead line system by utilizing SF6 arc extinguishing and SF6 insulation, thereby facilitating the power failure maintenance of the transformer.
The embodiment of the utility model is realized by the following steps:
an SF6 load switch comprises a box body, wherein the box body is divided into a high-pressure air chamber and a driving mechanism chamber through a partition plate.
And a three-station operating mechanism is arranged in the driving mechanism chamber.
And a three-position switch device is arranged in the high-pressure air chamber.
The output end of the three-position operating mechanism is connected to the three-position switch device.
An operation panel is fixed outside the box body and connected to the driving mechanism chamber.
In a preferred embodiment of the present invention, the SF6 load switch further includes three-phase insulation terminals.
The three-phase insulation terminal comprises an upper three-phase insulator and a lower three-phase insulator which are respectively arranged at the left side and the right side of the box body.
In a preferred embodiment of the present invention, an upper copper bar and a lower copper bar are disposed in the high-pressure air chamber of the SF6 load switch.
And one end of the upper copper bar is connected with the upper three-phase insulator, and the other end of the upper copper bar is connected with the three-station switching device.
One end of the lower copper bar is connected with the lower three-phase insulator, and the other end of the lower copper bar is connected with the three-position switch device.
In a preferred embodiment of the present invention, the three-position switch device of the SF6 load switch is switched on, and the upper three-phase insulator and the lower three-phase insulator are conducted.
And the three-station switching device is opened, and the upper three-phase insulator and the lower three-phase insulator are conducted and separated.
The three-position switch device is grounded, and the lower three-phase insulator is grounded.
In a preferred embodiment of the present invention, the high pressure gas chamber of the SF6 load switch is filled with SF6 gas.
The technical effects are as follows: the three-station switching device, the upper copper bar, the lower copper bar and other electrified components can be ensured to have insulating property to the ground and between phases and arc extinguishing performance of the switch.
In a preferred embodiment of the present invention, the upper three-phase insulator of the SF6 load switch is provided with a transformer connecting flange at an outer side of the box body.
The technical effects are as follows: the transformer connecting flange is used for butt joint installation of an SF6 load switch and a transformer, and high-voltage component connection is realized.
And the lower three-phase insulator is connected with a high-voltage primary cable and used as a high-voltage inlet wire of the load switch.
In a preferred embodiment of the present invention, a bracket is fixed below one side of the box of the SF6 load switch.
The technical effects are as follows: used for auxiliary supporting and fixing.
In a preferred embodiment of the present invention, a pressure relief device is disposed at a top of the high pressure chamber of the SF6 load switch.
The technical effects are as follows: the high-voltage conductive part is used for pressure relief when a fault occurs in the high-voltage conductive part in the high-pressure air chamber, and personnel on the bottom surface are prevented from being damaged.
In a preferred embodiment of the present invention, the operation panel of the SF6 load switch is provided with a load switch operation handle, a grounding switch operation handle, an interlock device and a switch position indicator.
The interlock device is linked with the load switch operating handle and the grounding switch operating handle, and the load switch operating handle and the grounding switch operating handle rotate along opposite clockwise directions.
The load switch operating handle rotates 90 degrees anticlockwise, the three-position operating mechanism drives the three-position switching device to switch on, and the switch position indicator points to the switch-on position to realize the switch-on of the load switch.
The load switch operating handle rotates 90 degrees clockwise, the three-position operating mechanism drives the three-position switching device to be switched off, and the switch position indicator points to the switching-off position to realize the switching-off of the load switch.
The earthing switch operating handle rotates 90 degrees clockwise, the three-position operating mechanism drives the three-position switch device to be earthed, and the switch position indicator points to the earthing position to realize earthing of the earthing switch.
The earthing switch operating handle rotates 90 degrees anticlockwise, the three-position operating mechanism drives the three-position switching device to be switched off, and the switch position indicator points to the switching-off position to realize switching-off of the load switch.
The technical effects are as follows: the operation function and the correct state indication of the switch are realized.
In a preferred embodiment of the present invention, a pressure indicator is disposed in the driving mechanism chamber of the SF6 load switch.
And a pressure observation window is arranged at the bottom of the driving mechanism chamber.
The technical effects are as follows: the pressure state detection device is used for detecting the pressure state of the high-pressure air chamber, and operation and maintenance personnel can conveniently observe whether the pressure state of the switch is normal or not on the ground.
The embodiment of the utility model has the beneficial effects that:
the SF6 load switch comprises a box body, an operation panel and a three-phase insulator, wherein a three-position switch device, a connecting copper bar and a three-position operation mechanism are arranged in the box body. The SF6 load switch is installed on the incoming line side of the transformer, and utilizes SF6 to extinguish arc, SF6 is insulated, so that the high voltage of the transformer of an overhead line system can be cut off, the arc extinguishing and insulating performances of the switch are excellent, the reliable switching-on, switching-off and grounding of the switch are ensured, and the power failure maintenance of the transformer is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic front view of an SF6 load switch of the present invention;
FIG. 2 is a schematic diagram of a SF6 load switch in a right view;
FIG. 3 is a schematic diagram of a left side view of an SF6 load switch of the present invention;
FIG. 4 is a schematic bottom view of an SF6 load switch of the present invention;
fig. 5 is a schematic top view of an SF6 load switch of the present invention.
In the figure: 1-a box body; 101-a separator; 102-a high pressure gas chamber; 1021-three position switching device; 1022-upper copper bar; 1023-lower copper bars; 103-a drive mechanism chamber; 1031-three-station operating mechanism; 1032-a pressure indicator; 104-transformer connection flange; 105-a scaffold; 106-a pressure relief device; 107-pressure observation window; 2-an operation panel; 201-load switch operating handle; 202-earthing switch operating handle; 203-an interlock; 204-a switch position indicator; 3-a three-phase insulated terminal; 301-three phase insulator; 302-lower three-phase insulator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 5, an embodiment of the utility model provides an SF6 load switch, which includes a box 1, wherein the box 1 is divided into a high pressure chamber 102 and a driving mechanism chamber 103 by a partition plate 101.
A three-position operating mechanism 1031 is arranged in the driving mechanism chamber 103.
A three-position switch device 1021 is arranged in the high-pressure air chamber 102.
The output of the three-position operating mechanism 1031 is connected to the three-position switch device 1021.
An operation panel 2 is fixed outside the case 1, and the operation panel 2 is connected to the drive mechanism chamber 103.
In a preferred embodiment of the present invention, the SF6 load switch further includes a three-phase insulation terminal 3.
The three-phase insulated terminal 3 includes an upper three-phase insulator 301 and a lower three-phase insulator 302, which are respectively installed at the left and right sides of the box body 1.
In a preferred embodiment of the present invention, an upper copper bar 1022 and a lower copper bar 1023 are disposed in the high pressure chamber 102 of the SF6 load switch.
One end of the upper copper bar 1022 is connected to the upper three-phase insulator 301, and the other end is connected to the three-position switch device 1021.
One end of the lower copper bar 1023 is connected with the lower three-phase insulator 302, and the other end of the lower copper bar 1023 is connected with the three-position switch device 1021.
In a preferred embodiment of the present invention, the three-position switch device 1021 of the SF6 load switch is turned on, and the upper three-phase insulator 301 and the lower three-phase insulator 302 are turned on.
The three-position switch device 1021 is opened, and the upper three-phase insulator 301 and the lower three-phase insulator 302 are connected and isolated.
The three-position switch device 1021 is grounded, and the lower three-phase insulator 302 is grounded.
In the preferred embodiment of the present invention, the high pressure chamber 102 of the SF6 load switch is filled with SF6 gas.
The technical effects are as follows: can guarantee three station switching device 1021, go up copper bar 1022, down electrified parts such as copper bar 1023 to ground and alternate insulating properties and the arc extinguishing performance of switch.
In a preferred embodiment of the present invention, the upper three-phase insulator 301 of the SF6 load switch is provided with a transformer connecting flange 104 at the outer side of the box body 1.
The technical effects are as follows: the transformer connecting flange 104 is used for butt-joint installation of the SF6 load switch and the transformer, and high-voltage component connection is realized.
The lower three-phase insulator 302 is connected with a high-voltage primary cable and used as a high-voltage incoming line of the load switch.
In the preferred embodiment of the present invention, a bracket 105 is fixed below one side of the box 1 of the SF6 load switch.
The technical effects are as follows: used for auxiliary supporting and fixing.
In the preferred embodiment of the present invention, a pressure relief device 106 is disposed on the top of the high pressure chamber 102 of the SF6 load switch.
The technical effects are as follows: the high-voltage conductive component in the high-voltage air chamber 102 is used for pressure relief when the high-voltage conductive component fails, so that personnel on the bottom surface are prevented from being damaged.
In a preferred embodiment of the present invention, the operation panel 2 of the SF6 load switch is provided with a load switch operation handle 201, a grounding switch operation handle 202, an interlock device 203 and a switch position indicator 204.
The interlock device 203 interlocks the load switch operating handle 201 and the earthing switch operating handle 202, and the load switch operating handle 201 and the earthing switch operating handle 202 are rotated in opposite clockwise directions.
The load switch operating handle 201 rotates 90 degrees anticlockwise, the three-position operating mechanism 1031 drives the three-position switch device 1021 to be switched on, and the switch position indicator 204 points to a switching-on position, so that switching-on of the load switch is realized.
The load switch operating handle 201 rotates clockwise by 90 degrees, the three-position operating mechanism 1031 drives the three-position switch device 1021 to be switched off, and the switch position indicator 204 points to the switching-off position, so that the switching-off of the load switch is realized.
The grounding switch operating handle 202 rotates clockwise by 90 °, the three-position operating mechanism 1031 drives the three-position switch device 1021 to be grounded, and the switch position indicator 204 points to a grounding position, so that grounding of the grounding switch is realized.
The earthing switch operating handle 201 rotates 90 degrees anticlockwise, the three-position operating mechanism 1031 drives the three-position switch device 1021 to be switched off, and the switch position indicator 204 points to the switching-off position, so that the load switch is switched off.
The technical effects are as follows: the operation function and the correct state indication of the switch are realized.
In a preferred embodiment of the present invention, a pressure indicator 1032 is disposed in the driving mechanism chamber 103 of the SF6 load switch.
The bottom of the driving mechanism chamber 103 is provided with a pressure observation window 107.
The technical effects are as follows: the pressure detection device is used for detecting the pressure state of the high-pressure air chamber 102, and is convenient for operation and maintenance personnel to observe whether the pressure state of the switch is normal or not on the ground.
The embodiment of the utility model aims to protect an SF6 load switch, and has the following effects:
the SF6 load switch comprises a box body 1, an operation panel 2 and a three-phase insulator 3, wherein a three-position switch device 1021, a connecting copper bar and a three-position operation mechanism 1031 are arranged in the box body 1. The SF6 load switch is installed on the incoming line side of the transformer, and utilizes SF6 to extinguish arc, SF6 is insulated, so that the high voltage of the transformer of an overhead line system can be cut off, the arc extinguishing and insulating performances of the switch are excellent, the reliable switching-on, switching-off and grounding of the switch are ensured, and the power failure maintenance of the transformer is facilitated.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. An SF6 load switch is characterized by comprising a box body (1), wherein the box body (1) is internally divided into a high-pressure air chamber (102) and a driving mechanism chamber (103) through a partition plate (101);
a three-station operating mechanism (1031) is arranged in the driving mechanism chamber (103);
a three-position switch device (1021) is arranged in the high-pressure air chamber (102);
the output end of the three-position operating mechanism (1031) is connected to the three-position switch device (1021);
an operation panel (2) is fixed outside the box body (1), and the operation panel (2) is connected to the driving mechanism chamber (103).
2. The SF6 load switch of claim 1,
further comprising a three-phase insulated terminal (3);
the three-phase insulation terminal (3) comprises an upper three-phase insulator (301) and a lower three-phase insulator (302), and the three-phase insulation terminal and the lower three-phase insulator are respectively installed on the left side and the right side of the box body (1).
3. The SF6 load switch of claim 2,
an upper copper bar (1022) and a lower copper bar (1023) are arranged in the high-pressure air chamber (102);
one end of the upper copper bar (1022) is connected with the upper three-phase insulator (301), and the other end of the upper copper bar is connected with the three-position switch device (1021);
copper bar (1023) one end is connected down three phase insulator (302), the other end is connected three station switching device (1021).
4. The SF6 load switch of claim 3,
the three-position switch device (1021) is switched on, and the upper three-phase insulator (301) is conducted with the lower three-phase insulator (302);
the three-position switch device (1021) is switched off, and the upper three-phase insulator (301) and the lower three-phase insulator (302) are conducted and isolated;
the three-position switch device (1021) is grounded, and the lower three-phase insulator (302) is grounded.
5. The SF6 load switch of claim 1,
SF6 gas is filled in the high-pressure air chamber (102).
6. The SF6 load switch of claim 2,
and the upper three-phase insulator (301) is provided with a transformer connecting flange (104) at the outer side of the box body (1).
7. The SF6 load switch of claim 1,
a support (105) is fixed below one side of the box body (1).
8. The SF6 load switch of claim 1,
the top of the high-pressure air chamber (102) is provided with a pressure relief device (106).
9. The SF6 load switch of claim 1,
the operating panel (2) is provided with a load switch operating handle (201), a grounding switch operating handle (202), an interlocking device (203) and a switch position indicator (204);
the interlocking device (203) is used for interlocking the load switch operating handle (201) and the grounding switch operating handle (202), and the load switch operating handle (201) and the grounding switch operating handle (202) rotate along opposite clockwise directions.
10. The SF6 load switch of claim 1,
a pressure indicator (1032) is arranged in the driving mechanism chamber (103);
and a pressure observation window (107) is arranged at the bottom of the driving mechanism chamber (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122647000.9U CN216698207U (en) | 2021-11-01 | 2021-11-01 | SF6 load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122647000.9U CN216698207U (en) | 2021-11-01 | 2021-11-01 | SF6 load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216698207U true CN216698207U (en) | 2022-06-07 |
Family
ID=81831944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122647000.9U Active CN216698207U (en) | 2021-11-01 | 2021-11-01 | SF6 load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216698207U (en) |
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2021
- 2021-11-01 CN CN202122647000.9U patent/CN216698207U/en active Active
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