GIS combined electric appliance three-position switch

Abstract

The utility model discloses a GIS combined electric appliance three-position switch, which belongs to the technical field of three-position switches, and is characterized in that one end of a switch spherical tank body is provided with an adjusting groove, the inner wall of the adjusting groove is fixedly sleeved with a contact knife, the opening of the adjusting groove is fixedly connected with a connecting sleeve, the surface of the connecting sleeve is in threaded connection with a cover plate, one end of the cover plate is movably connected with an elastic pad, and the elastic pad is fixedly connected with the switch spherical tank body. According to the three-position switch of the GIS combined electric appliance, through the arrangement of the manual knob and the motor, the power-on and power-off of the switch can be controlled in an automatic mode and a manual mode, the control can be carried out in a manual mode when the motor is damaged, the operation is convenient, and the operation is convenient. According to the utility model, the use stability of the switch is improved, through the arrangement of the limiting sleeve, the clamping block and the clamping plate, the contact position of the contact knife and the contact can be firmly fixed, the position after power failure can be effectively positioned, and the use safety of the switch is improved.

Description

GIS switchgear three-position switch Technical Field

[0001] This utility model relates to the field of three-position switch technology, and more specifically, to a three-position switch for GIS combined electrical appliances. Background Technology

[0002] A three-position switch in a GIS switchgear is a switching device with three working positions, used in high-voltage power grids, especially in fully enclosed switchgear (GIS) or pass-through switchgear (PASS).

[0003] Currently, commonly used GIS switchgear three-position switches can only be automatically controlled to turn on and off during use. If the automatic components fail, the switch cannot function properly. Furthermore, it cannot effectively pinpoint the on / off position when the switch is powered on or off, reducing safety. For example, the GIS switchgear three-position switch disclosed in publication number CN215834423U includes a first stationary contact, a second stationary contact, and a third stationary contact located inside three interfaces within a spherical tank. The first stationary contact is located at the upper end of the spherical tank, while the second and third stationary contacts are located on the left and right sides of the spherical tank, respectively, and are on the same horizontal line. It also includes an inverted T-shaped moving contact, which includes a first contact blade at the top, a second contact blade on the left, and a third contact blade on the right. The moving contact moves up and down via a drive device located on the side of the center of the spherical tank.

[0004] As can be seen from the above-disclosed solution, the moving contact can only be controlled by the drive device to control its energized and de-energized positions. If the drive device or gear is damaged, it cannot control the energization and de-energization, which reduces the stability of the switch. Furthermore, when the moving contact and the stationary contact are in contact or separated, their positions can only be positioned by gears and sliding teeth, which has insufficient positioning stability and may cause accidental energization, thus reducing the safety of use. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a three-position switch for GIS combined electrical appliances. This three-position switch for GIS combined electrical appliances, through the setting of a manual knob and a motor, can control the power on and off of the switch in both automatic and manual modes. It can be controlled manually when the motor is damaged, which improves the stability of the switch. Furthermore, through the setting of limit sleeves, clips, and clamps, not only can the contact position of the contact blade and the contact head be firmly fixed, but the position can also be effectively positioned after the power is off, which improves the safety of the switch.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A GIS (Gas Insulated Switchgear) three-position switch includes a switch spherical tank body. One end of the switch spherical tank body has an adjustment groove. A contact blade is fixedly sleeved on the inner wall of the adjustment groove. A connecting sleeve is fixedly connected to the opening of the adjustment groove. A cover plate is threaded onto the surface of the connecting sleeve. A spring washer is movably connected to one end of the cover plate. A limit mechanism is fixedly installed on the surface of the cover plate. A rotating mechanism is rotatably connected to the inner wall of the adjustment groove. One end of the rotating mechanism is movably connected to the surface of the cover plate. A motor is fixedly installed at the bottom of the switch spherical tank body. The output end of the motor is fixedly connected to the bottom of the rotating mechanism. This GIS three-position switch, through a manual knob and motor, allows for both automatic and manual control of the switch's power on and off. Manual control is possible even if the motor fails, improving the switch's operational stability. Furthermore, the limit sleeve, locking block, and clamp not only firmly fix the contact position of the contact blade and contact head but also effectively position the switch after power failure, enhancing its operational safety.

[0008] Furthermore, the rotating mechanism includes a turntable, a rotating shaft is fixedly sleeved at the center of the turntable, the surface of the rotating shaft is rotatably connected to the bottom of the adjusting groove through a bearing, a locking block and a pointer are fixedly connected to the surface of the rotating shaft, and a knob is detachably connected to one end of the rotating shaft. The rotating shaft can be manually controlled to rotate by the knob, thereby facilitating manual power-on and power-off switching.

[0009] Furthermore, the limiting mechanism includes a fixed sleeve, the bottom of which is fixedly connected to the surface of the cover plate. The bottom of the fixed sleeve has a through hole, and a limiting sleeve is fixedly connected to the inner wall of the fixed sleeve. The inner wall of the limiting sleeve has a guide groove, and the two ends of the guide groove are fixedly connected to a slot. The guide groove can limit the rotation length of the block, and the slot can automatically position the rotation position of the block.

[0010] Furthermore, a rotating arm is fixedly connected to the side of the turntable, and a contact is fixedly connected to the side of the rotating arm. A contact groove is opened on the side of the contact blade, and the surface of the contact is movably connected to the inner wall of the contact groove. The three rotating arms can drive the three contacts to simultaneously contact and separate from the contact groove.

[0011] Furthermore, symmetrical clamps are fixedly connected to the surface of the contact. The clamps are made of elastic metal sheets, and the surface of the clamps is movably connected to the surface of the contact blade. After the contact and the contact groove come into contact, the clamps can automatically clamp the contact blade, thereby improving the stability of the electrical connection.

[0012] Furthermore, the inner wall of the slot is movably connected to the surface of the card block, and the cross-sectional shape of the slot is V-shaped. The V-shaped slot not only allows the card block to rotate, but also facilitates the card block to automatically disengage from the slot after being subjected to rotational force.

[0013] Furthermore, the end face of the fixing sleeve has an indicator scale, and the indicator scale and pointer make it easy for users to see the power-on or power-off status of the switch intuitively.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) This solution uses a manual knob and a motor to control the power on and off of the switch in both automatic and manual modes. It can also be controlled manually when the motor is damaged, which improves the stability of the switch.

[0016] (2) This solution, through the setting of limit sleeves, clips and clamps, can not only firmly fix the contact position of the contact knife and the contact head, but also effectively position it after power failure, thus improving the safety of the switch. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the switch spherical tank body of this utility model;

[0019] Figure 3 is a schematic diagram of the rotating mechanism in Figure 2;

[0020] Figure 4 is a schematic diagram of the installation structure of the switch ball tank body and the contact knife in Figure 2;

[0021] Figure 5 is a schematic diagram of the installation structure of the limiting mechanism of this utility model;

[0022] Figure 6 is a schematic diagram of the mounting structure of the rotating shaft and pointer in Figure 5;

[0023] Figure 7 is a cross-sectional view of the fixed sleeve structure in Figure 5.

[0024] Explanation of the labels in the diagram:

[0025] 1. Switch spherical tank body; 11. Adjustment groove; 12. Connecting sleeve; 13. Spring pad; 14. Contact knife; 15. Contact groove; 16. Cover plate; 2. Rotating mechanism; 21. Turntable; 22. Rotating arm; 23. Contact head; 24. Clamping plate; 25. Rotating shaft; 26. Locking block; 27. Pointer; 28. Knob; 29. ​​Motor; 3. Limiting mechanism; 31. Fixing sleeve; 32. Through hole; 33. Limiting sleeve; 34. Guide groove; 35. Locking groove; 36. Indicating scale. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please refer to Figures 1-5. The GIS combined electrical appliance three-position switch includes a switch spherical tank body 1. The switch spherical tank body 1 is a GIS combined electrical appliance three-position switch spherical tank, and its specific structure and connection method are existing technology. One end of the switch spherical tank body 1 has an adjustment groove 11. Three contact blades 14 are fixedly sleeved on the inner wall of the adjustment groove 11, which is existing technology. A connecting sleeve 12 is fixedly connected to the opening of the adjustment groove 11. A cover plate 16 is threaded onto the surface of the connecting sleeve 12. The cover plate 16 facilitates opening the adjustment groove 11 for later maintenance. A spring washer 13 is movably connected to one end of the cover plate 16, providing sealing and shock absorption. A limiting mechanism 3 is fixedly installed on the surface of the cover plate 16. The limiting mechanism 3 includes a fixed sleeve 31, the bottom of which is fixedly connected to the surface of the cover plate 16. A through hole 32 is opened at the bottom of the fixed sleeve 31. A limiting sleeve 33 is fixedly connected to the inner wall of the fixed sleeve 31, and a guide groove 3 is opened on the inner wall of the limiting sleeve 33. 4. The guide groove 34 is fixedly connected to the two ends of the slot 35. The guide groove 34 can limit the rotation length of the block 26. The slot 35 can automatically position the rotation position of the block 26. The inner wall of the adjustment groove 11 is rotatably connected to the rotating mechanism 2. The rotating mechanism 2 includes a turntable 21. The center of the turntable 21 is fixedly sleeved with a rotating shaft 25. The surface of the rotating shaft 25 is rotatably connected to the bottom of the adjustment groove 11 through a bearing. The block 26 and the pointer 27 are fixedly connected to the surface of the rotating shaft 25. A knob 28 is detachably connected to one end of the rotating shaft 25. The rotating shaft 25 can be manually controlled to rotate by the knob 28, which facilitates manual power-on and power-off of the switch. One end of the rotating mechanism 2 is movably connected to the surface of the cover plate 16. A motor 29 is fixedly installed at the bottom of the switch spherical tank body 1. The motor 29 is a forward and reverse stepper motor that can automatically control the rotating shaft 25 to rotate clockwise and counterclockwise. The output end of the motor 29 is fixedly connected to the bottom of the rotating mechanism 2.

[0029] A rotating arm 22 is fixedly connected to the side of the turntable 21, and a contact 23 is fixedly connected to the side of the rotating arm 22. A contact groove 15 is opened on the side of the contact blade 14. The surface of the contact 23 is movably connected to the inner wall of the contact groove 15. The three rotating arms 22 can drive the three contacts 23 to simultaneously contact and separate from the contact groove 15. Symmetrical clamping plates 24 are fixedly connected to the surface of the contact 23. The clamping plates 24 are made of elastic metal sheets. The surface of the clamping plates 24 is movably connected to the surface of the contact blade 14. After the contact 23 and the contact groove 15 come into contact, the clamping plates 24 can automatically clamp the contact blade 14, which improves the stability of the power connection.

[0030] The inner wall of the slot 35 is movably connected to the surface of the block 26. The cross-sectional shape of the slot 35 is V-shaped. The V-shaped slot 35 can not only rotate the block 26, but also facilitates the block 26 to automatically disengage from the slot 35 after being subjected to rotational force. The end face of the fixed sleeve 31 has an indicator scale 36. The indicator scale 36 and the pointer 27 make it easy for the user to intuitively see the power-on or power-off status of the switch.

[0031] When in use, the three-position switch of this GIS combined electrical appliance can be manually rotated by rotating the knob 28 via the motor 29 to rotate the rotating shaft 25. When the rotating shaft 25 rotates clockwise, the contact 23 screws into the contact groove 15, and at the same time, the clamping plate 24 clamps and positions the contact blade 14. Simultaneously, the locking block 26 rotates along the guide groove 34 to be positioned in the locking slot 35 at one end of the guide groove 34, thus providing double positioning of the energized position. When the rotating shaft 25 rotates counterclockwise, the contact 23 disengages from the contact groove 15, and at this time, the locking block 26 rotates along the guide groove 34. The switch is positioned within the slot 35 at the other end, thereby locating the power-off position. Through the manual knob 28 and motor 29, the switch can be controlled to turn on and off in both automatic and manual modes. Manual control is possible even if the motor 29 is damaged, improving the stability of the switch. Furthermore, the limit sleeve 33, the locking block 26, and the clamping plate 24 not only firmly fix the contact position of the contact knife 14 and the contact 23, but also effectively locate the position after power-off, improving the safety of the switch.

[0032] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A GIS combined electrical appliance three-position switch, comprising a switch spherical tank body (1), wherein an adjustment groove (11) is opened at one end of the switch spherical tank body (1), and a contact blade (14) is fixedly sleeved on the inner wall of the adjustment groove (11), characterized in that: A connecting sleeve (12) is fixedly connected to the opening of the adjusting groove (11). A cover plate (16) is threadedly connected to the surface of the connecting sleeve (12). A spring pad (13) is movably connected to one end of the cover plate (16). A limit mechanism (3) is fixedly installed on the surface of the cover plate (16). A rotating mechanism (2) is rotatably connected to the inner wall of the adjusting groove (11). One end of the rotating mechanism (2) is movably connected to the surface of the cover plate (16). A motor (29) is fixedly installed at the bottom of the switch ball tank body (1). The output end of the motor (29) is fixedly connected to the bottom of the rotating mechanism (2).

2. The GIS combined electrical appliance three-position switch according to claim 1, characterized in that: The rotating mechanism (2) includes a turntable (21), a rotating shaft (25) is fixedly sleeved at the center of the turntable (21), the surface of the rotating shaft (25) is rotatably connected to the bottom of the adjusting groove (11) through a bearing, a locking block (26) and a pointer (27) are fixedly connected to the surface of the rotating shaft (25), and a knob (28) is detachably connected to one end of the rotating shaft (25).

3. The GIS combined electrical appliance three-position switch according to claim 1, characterized in that: The limiting mechanism (3) includes a fixed sleeve (31), the bottom of which is fixedly connected to the surface of the cover plate (16), a through hole (32) is opened at the bottom of the fixed sleeve (31), a limiting sleeve (33) is fixedly connected to the inner wall of the fixed sleeve (31), a guide groove (34) is opened on the inner wall of the limiting sleeve (33), and a slot (35) is fixedly connected to both ends of the guide groove (34).

4. The GIS combined electrical appliance three-position switch according to claim 2, characterized in that: A rotating arm (22) is fixedly connected to the side of the turntable (21), and a contact (23) is fixedly connected to the side of the rotating arm (22). A contact groove (15) is opened on the side of the contact blade (14), and the surface of the contact (23) is movably connected to the inner wall of the contact groove (15).

5. The GIS combined electrical appliance three-position switch according to claim 4, characterized in that: The surface of the contact (23) is fixedly connected to a symmetrical clamp (24), which is made of an elastic metal sheet, and the surface of the clamp (24) is movably connected to the surface of the contact blade (14).

6. The GIS combined electrical appliance three-position switch according to claim 3, characterized in that: The inner wall of the slot (35) is movably connected to the surface of the block (26), and the cross-sectional shape of the slot (35) is V-shaped.

7. The GIS combined electrical appliance three-position switch according to claim 3, characterized in that: The end face of the fixing sleeve (31) has an indicator scale (36).

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