An intelligently controlled SF6 cabinet

Abstract

An intelligently controlled SF6 cabinet relates to the field of electrical cabinets, wherein an isolating switch group is arranged on the cabinet body mechanism, a circuit breaker group is arranged above the isolating switch group on the cabinet body mechanism, an operating mechanism is arranged below the isolating switch group on the cabinet body mechanism, and a grounding unit is arranged on the operating mechanism; the intelligently controlled SF6 cabinet described in the present invention can be hung with a padlock through an opening lock hole and a closing lock hole to prevent the risk of electric shock caused by others' operation after the power supply and power off operations are completed, and has high safety performance. The operations of the circuit breaker, the isolating switch and the grounding knife switch are integrated through the operating mechanism, the transmission mechanism is simple and effective, easy to maintain and repair, long service life, reliable self-locking, high safety performance, greatly shortening the operation time, reducing safety hazards, and applying pressure to the switch closure through the isolation energy storage spring, the circuit breaker energy storage spring and the spring to avoid errors in the closing position due to long use time, resulting in poor closed contact.

Description

Technical Field

[0001] The present invention relates to the field of electrical cabinets, and in particular to an intelligently controlled SF6 cabinet. Background Art

[0002] SF6 cabinet, or gas-filled cabinet, is a new generation of switchgear that combines sulfur hexafluoride gas and air-insulated compartments. To operate the gas-filled cabinet safely, the following requirements must be met: the circuit breaker switch can only be operated when the isolating switch is closed, the isolating switch can only be operated when the circuit breaker and the earthing knife are in the open state, and the earthing knife can only be operated when the isolating switch is in the open state. The power-on operation sequence is the earthing knife switch, isolating switch, and circuit breaker switch, and the power-off operation sequence is the circuit breaker switch, isolating switch, and earthing knife. Existing gas-filled cabinet circuit breakers, isolating switches, and earthing knife switches generally adopt separate operation, with cumbersome operation steps and long operation time, resulting in reduced safety performance. In addition, as the use time increases, errors in the closing and opening positions are prone to occur, resulting in poor contact of the switches and a short equipment life. A stepless interlocking mechanism is provided to prevent misoperation, but the structure is complex, difficult to maintain and repair, and the cost is high, and the prevention of misoperation is unreliable. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses an intelligently controlled SF6 cabinet. The present invention can hang a padlock through the opening and closing lock holes to prevent the risk of electric shock caused by other people's operations after the power supply and power off operations are completed. The cabinet has high safety performance. The operations of the circuit breaker, the disconnector and the earth switch are integrated through the operating mechanism. The transmission mechanism is simple and effective, easy to maintain and repair, has a long service life, reliable self-locking, high safety performance, greatly shortens the operation time, reduces safety hazards, and applies pressure to the switch closure through the isolation energy storage spring, the circuit breaker energy storage spring and the spring to avoid errors in the closing position over a long period of use, resulting in poor closing contact and improving the life of the equipment.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0005] An intelligently controlled SF6 cabinet comprises a cabinet mechanism, wherein the cabinet mechanism is provided with an isolating switch group, a circuit breaker group is provided above the isolating switch group on the cabinet mechanism, an operating mechanism is provided below the isolating switch group on the cabinet mechanism, and a grounding unit is provided on the operating mechanism.

[0006] The cabinet mechanism includes a cabinet, wherein an arc slide is provided on the cabinet, and the shape of the arc slide is an arc greater than ninety degrees, and a first gate opening slot is provided on the cabinet at the lower end of the arc slide, and the first gate opening slot is perpendicular to the lower end of the arc slide, and a second gate opening slot is provided on the cabinet at the upper end of the first gate opening slot, and the second gate opening slot is perpendicular to the first gate opening slot, and gate opening lock plates are respectively fixed on the cabinet at both sides of the second gate opening slot, and gate opening lock holes are provided on the two gate opening lock plates, and a first gate closing slot is provided on the cabinet at the upper end of the arc slide, and the first gate closing slot is perpendicular to the upper end of the arc slide, and a second gate closing slot is provided on the cabinet at the lower end of the first gate closing slot, and the second gate closing slot is perpendicular to the first gate closing slot, and gate closing lock plates are respectively fixed on the cabinet at both sides of the second gate closing slot, and gate closing lock holes are provided on the two gate closing lock plates.

[0007] The isolating switch group includes an isolating fixed shaft, which is connected to the cabinet through a bearing, and the isolating fixed shaft is connected to an isolating transmission gear through a key, and the other end of the isolating fixed shaft is fixed with an isolating energy storage spring, and the other end of the isolating energy storage spring is fixed with an isolating switch transmission shaft.

[0008] The circuit breaker group includes a circuit breaker fixed shaft, which is connected to the cabinet through a bearing, and a circuit breaker gear is connected to the circuit breaker fixed shaft through a key, a circuit breaker energy storage spring is fixed to the other end of the circuit breaker fixed shaft, and a circuit breaker transmission shaft is fixed to the other end of the circuit breaker energy storage spring.

[0009] The operating mechanism includes a fixed shaft, which is fixed on a cabinet body. A swivel is connected to the side of the fixed shaft through a bearing. A connecting rod is fixed to the side of the swivel. An arc-shaped isolation rack is fixed on the connecting rod. A disconnecting arc-shaped rack is fixed on the connecting rod above the arc-shaped isolation rack. Both the arc-shaped isolation rack and the disconnecting arc-shaped rack are arc-shaped. The central angle of the arc-shaped isolation rack is greater than that of the disconnecting arc-shaped rack. Sliding tips are fixed to the ends of the disconnecting arc-shaped rack and the arc-shaped isolation rack. The other end of the connecting rod is slidably connected to a telescopic member, and a handle is fixed to the telescopic member.

[0010] The grounding unit comprises a grounding knife which is slidably connected to a rotating ring, a middle portion of which is connected to a connecting rod via a spring, a grounding switch is fixed on the cabinet below the grounding knife, and a grounding knife slot is provided above the grounding switch.

[0011] The distance from the tooth peak of the circuit-breaking arc-shaped rack to the axis center of the fixed shaft is equal to the distance from the tooth valley at the lower end of the circuit-breaking gear to the axis center of the fixed shaft.

[0012] The distance from the tooth peak of the arc-shaped isolation rack to the axis center of the fixed shaft is equal to the distance from the tooth valley at the lower end of the isolation transmission gear to the axis center of the fixed shaft.

[0013] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0014] The intelligently controlled SF6 cabinet described in the present invention can be padlocked through the gate opening lock hole and the gate closing lock hole to prevent the risk of electric shock caused by other people's operation after the power supply and power off operations are completed. It has high safety performance, and the operations of the circuit breaker, the disconnector and the earth switch are integrated through the operating mechanism. The transmission mechanism is simple and effective, easy to maintain and repair, has a long service life, reliable self-locking, and high safety performance. It greatly shortens the operation time and reduces safety hazards. The isolation energy storage spring, the circuit breaker energy storage spring and the spring are used to apply pressure to close the switch, so as to avoid errors in the closing position over a long period of use, resulting in poor closing contact and improving the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a front view of the internal structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the internal mechanism structure of the present invention;

[0018] Figure 4 It is a partial enlarged view of point A of the present invention;

[0019] Figure 5 It is a partial enlarged view of point B of the present invention.

[0020] 1. Cabinet mechanism; 101. Cabinet; 102. First gate opening slot; 103. Gate opening lock plate; 104. Gate opening lock hole; 105. Second gate opening slot; 106. First gate closing slot; 107. Second gate closing slot; 108. Gate closing lock plate; 109. Gate closing lock hole; 110. Arc slide; 2. Isolating switch group; 201. Isolating switch transmission shaft; 202. Isolating energy storage spring; 203. Isolating transmission gear; 204. Isolating fixed shaft; 3. , circuit breaker group; 301, circuit breaker transmission shaft; 302, circuit breaker energy storage spring; 303, circuit breaker gear; 304, circuit breaker fixed shaft; 4, operating mechanism; 401, fixed shaft; 402, swivel; 403, connecting rod; 404, telescopic member; 405, handle; 406, circuit breaker arc rack; 407, arc isolation rack; 408, sliding tip; 5, grounding unit; 501, ground knife; 502, spring; 503, grounding switch; 504, ground knife groove. DETAILED DESCRIPTION

[0021] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0022] Combined with Figures 1 to 5 An intelligently controlled SF6 cabinet comprises a cabinet body mechanism 1, on which an isolating switch group 2 is arranged, on which a circuit breaker group 3 is arranged above the isolating switch group 2, on which an operating mechanism 4 is arranged below the isolating switch group 2, and on which a grounding unit 5 is arranged.

[0023] The cabinet mechanism 1 includes a cabinet 101, and an arc-shaped slide 110 is provided on the cabinet 101. The shape of the arc-shaped slide 110 is an arc greater than ninety degrees. A first gate opening slot 102 is provided at the lower end of the arc-shaped slide 110 on the cabinet 101. The first gate opening slot 102 is perpendicular to the lower end of the arc-shaped slide 110. A second gate opening slot 105 is provided at the upper end of the first gate opening slot 102 on the cabinet 101. The second gate opening slot 105 is perpendicular to the first gate opening slot 102. The cabinet 101 is provided with gate opening lock plates 101 fixed on both sides of the second gate opening slot 105. 03, the two gate opening lock plates 103 are both provided with gate opening lock holes 104, the cabinet body 101 is provided with a first gate closing slot 106 at the upper end of the arc slide 110, the first gate closing slot 106 is perpendicular to the upper end of the arc slide 110, the cabinet body 101 is provided with a second gate closing slot 107 at the lower end of the first gate closing slot 106, the second gate closing slot 107 is perpendicular to the first gate closing slot 106, gate closing lock plates 108 are respectively fixed on both sides of the second gate closing slot 107 on the cabinet body 101, and the two gate closing lock plates 108 are both provided with gate closing lock holes 109.

[0024] The isolating switch group 2 includes an isolating fixed shaft 204, which is connected to the cabinet 101 through a bearing, and an isolating transmission gear 203 is connected to the isolating fixed shaft 204 through a key, and an isolating energy storage spring 202 is fixed to the other end of the isolating fixed shaft 204, and the other end of the isolating energy storage spring 202 is fixed to the isolating switch transmission shaft 201.

[0025] The circuit breaker group 3 includes a circuit breaker fixed shaft 304, which is connected to the cabinet 101 through a bearing. The circuit breaker fixed shaft 304 is connected to a circuit breaker gear 303 through a key. The other end of the circuit breaker fixed shaft 304 is fixed with a circuit breaker energy storage spring 302, and the other end of the circuit breaker energy storage spring 302 is fixed with a circuit breaker transmission shaft 301.

[0026] The operating mechanism 4 includes a fixed shaft 401, which is fixed on the cabinet 101. The side of the fixed shaft 401 is connected to a swivel 402 through a bearing. A connecting rod 403 is fixed to the side of the swivel 402. An arc-shaped isolation rack 407 is fixed on the connecting rod 403. A disconnecting arc-shaped rack 406 is fixed on the connecting rod 403 above the arc-shaped isolation rack 407. Both the arc-shaped isolation rack 407 and the disconnecting arc-shaped rack 406 are arc-shaped, and the central angle of the arc-shaped isolation rack 407 is greater than that of the disconnecting arc-shaped rack 406. The ends of the disconnecting arc-shaped rack 406 and the arc-shaped isolation rack 407 are both fixed with sliding tips 408. The other end of the connecting rod 403 is slidably connected to a telescopic member 404, and a handle 405 is fixed to the telescopic member 404.

[0027] The grounding unit 5 includes a grounding knife 501, which is slidably connected to the swivel 402. The middle part of the grounding knife 501 is connected to the connecting rod 403 through a spring 502. A grounding gate 503 is fixed on the cabinet 101 below the grounding knife 501, and a grounding knife groove 504 is opened above the grounding gate 503.

[0028] The distance from the tooth peak of the circuit-breaking arc-shaped rack 406 to the axis center of the fixed shaft 401 is equal to the distance from the tooth valley at the lower end of the circuit-breaking gear 303 to the axis center of the fixed shaft 401 .

[0029] The distance from the tooth peak of the arc-shaped isolation rack 407 to the axis center of the fixed shaft 401 is equal to the distance from the tooth valley at the lower end of the isolation transmission gear 203 to the axis center of the fixed shaft 401 .

[0030] The invention relates to an intelligently controlled SF6 cabinet. When in use, in the gate opening state, the handle 405 is in the second gate opening slot 105 at the lower end of the arc slide 110, and the ground knife 501 is pressed in the ground knife slot 504 by the spring 502. The ground knife is grounded, the isolating switch transmission shaft 201 and the circuit breaker transmission shaft 301 are respectively in the gate opening limit position, and the isolating switch and the circuit breaker are both in the gate opening state. If the power supply and closing operation is required, the padlock on the gate opening lock hole 104 is opened first, and the handle 405 is held by hand and the telescopic part 404 slides on the connecting rod 403 to move it out of the second gate opening slot 105, and enters the arc slide 110 through the first gate opening slot 102, and the handle 405 is moved upward in the arc slide 110. The handle 405 drives the connecting rod 403 to move upward, and the connecting rod 403 moves the ground knife 501 upward through the spring 502. 01 is pulled up from the ground knife groove 504, and the grounding is disconnected. The connecting rod 403 continues to move upward, and the teeth on the arc-shaped isolation rack 407 mesh with the teeth on the isolation transmission gear 203. As the arc-shaped isolation rack 407 moves upward, the isolation transmission gear 203 is driven to rotate clockwise. The isolation transmission gear 203 drives the isolation switch transmission shaft 201 to move clockwise through the isolation fixed shaft 204 and the isolation energy storage spring 202 to close the isolation switch. The arc-shaped isolation rack 407 continues to move upward, and the isolation fixed shaft 204 drives the isolation energy storage spring 202 to rotate clockwise. At this time, the isolation switch transmission shaft 201 reaches the limit position. The isolation energy storage spring 202 stores energy and applies pressure to the isolation switch through the isolation switch transmission shaft 201. The rod 403 continues to move upward, and the teeth on the circuit breaker arc rack 406 mesh with the teeth on the circuit breaker gear 303. The circuit breaker arc rack 406 moves upward, driving the circuit breaker gear 303 to rotate clockwise. The circuit breaker gear 303 drives the circuit breaker transmission shaft 301 to rotate clockwise through the circuit breaker fixed shaft 304 and the circuit breaker energy storage spring 302 to close the circuit breaker. The circuit breaker arc rack 406 continues to move upward, and the circuit breaker fixed shaft 304 continues to rotate clockwise. At this time, the circuit breaker transmission shaft 301 has reached the limit position. The circuit breaker energy storage spring 302 stores energy and applies pressure to the circuit breaker through the circuit breaker transmission shaft 301. At this time, the handle 405 reaches the limit position of the upper end of the arc slide 110, and the telescopic member 404 slides on the connecting rod 403. , move the handle 405 into the first closing gate slot 106 and then into the second closing gate slot 107, and hang a padlock on the closing gate lock hole 109 to complete the power supply operation. When it is necessary to open the gate to cut off the power, open the padlock on the closing gate lock hole 109, and move the handle 405 out in the same way, and move the handle 405 downward on the arc slide 110. During the downward movement of the arc slide 110, the pressure on the circuit breaker is relieved and the gate is opened in reverse in the above manner, and then the pressure on the disconnector is relieved and the gate is opened, and the ground knife 501 is pressed into the ground knife slot 504 by the spring 502, the ground knife is lowered to close the gate and apply pressure, and finally the handle 405 is moved into the second opening gate slot 105, and a padlock is hung on the opening gate lock hole 104 to complete the power off operation.

[0031] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and approaches to specifically implement the technical solution. The above is only a preferred implementation scheme of the present invention, but technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. An intelligently controlled SF6 cabinet, comprising a cabinet structure (1), characterized in that: The cabinet mechanism (1) is provided with an isolating switch group (2); a circuit breaker group (3) is provided above the isolating switch group (2) on the cabinet mechanism (1); an operating mechanism (4) is provided below the isolating switch group (2) on the cabinet mechanism (1); and a grounding unit (5) is provided on the operating mechanism (4); The cabinet mechanism (1) comprises a cabinet (101), wherein the cabinet (101) is provided with an arc-shaped slideway (110), wherein the shape of the arc-shaped slideway (110) is an arc greater than ninety degrees, wherein the cabinet (101) is provided with a first gate opening slot (102) at the lower end of the arc-shaped slideway (110), wherein the first gate opening slot (102) is perpendicular to the lower end of the arc-shaped slideway (110), wherein the cabinet (101) is provided with a second gate opening slot (105) at the upper end of the first gate opening slot (102), wherein the second gate opening slot (105) is perpendicular to the first gate opening slot (102), and gate opening lock plates (105) are respectively fixed on both sides of the second gate opening slot (105) of the cabinet (101). 03), the two gate opening lock plates (103) are both provided with gate opening lock holes (104), the cabinet (101) is provided with a first gate closing slot (106) at the upper end of the arc-shaped slideway (110), the first gate closing slot (106) is perpendicular to the upper end of the arc-shaped slideway (110), the cabinet (101) is provided with a second gate closing slot (107) at the lower end of the first gate closing slot (106), the second gate closing slot (107) is perpendicular to the first gate closing slot (106), the cabinet (101) is provided with gate closing lock plates (108) fixed on both sides of the second gate closing slot (107), and the two gate closing lock plates (108) are both provided with gate closing lock holes (109); The isolating switch group (2) comprises an isolating fixed shaft (204), the isolating fixed shaft (204) being connected to the cabinet (101) via a bearing, the isolating fixed shaft (204) being connected to an isolating transmission gear (203) via a key, the other end of the isolating fixed shaft (204) being fixed with an isolating energy storage spring (202), and the other end of the isolating energy storage spring (202) being fixed with an isolating switch transmission shaft (201); The circuit breaker assembly (3) comprises a circuit breaker fixed shaft (304), the circuit breaker fixed shaft (304) being connected to the cabinet (101) via a bearing, the circuit breaker fixed shaft (304) being connected to a circuit breaker gear (303) via a key, the other end of the circuit breaker fixed shaft (304) being fixed with a circuit breaker energy storage spring (302), and the other end of the circuit breaker energy storage spring (302) being fixed with a circuit breaker transmission rotating shaft (301); The operating mechanism (4) comprises a fixed shaft (401), the fixed shaft (401) being fixed on the cabinet (101), the side of the fixed shaft (401) being connected to a rotating ring (402) via a bearing, the side of the rotating ring (402) being fixed with a connecting rod (403), the connecting rod (403) being fixed with an arc-shaped isolation rack (407), and the connecting rod (403) being fixed with a disconnecting arc-shaped rack (407) above the arc-shaped isolation rack (407). 406), the arc-shaped isolation rack (407) and the disconnecting arc-shaped rack (406) are both arc-shaped, the central angle of the arc-shaped isolation rack (407) is larger than that of the disconnecting arc-shaped rack (406), the ends of the disconnecting arc-shaped rack (406) and the arc-shaped isolation rack (407) are both fixed with sliding tips (408), the other end of the connecting rod (403) is slidably connected with a telescopic member (404), and a handle (405) is fixed on the telescopic member (404); The grounding unit (5) comprises a grounding knife (501), the grounding knife (501) is slidably connected to a rotating ring (402), the middle part of the grounding knife (501) is connected to a connecting rod (403) via a spring (502), a grounding switch (503) is fixed on the cabinet (101) below the grounding knife (501), and a grounding knife groove (504) is provided above the grounding switch (503).

2. The intelligently controlled SF6 cabinet according to claim 1 is characterized in that: The distance from the tooth peak of the circuit-breaking arc-shaped rack (406) to the axis center of the fixed shaft (401) is equal to the distance from the tooth valley at the lower end of the circuit-breaking gear (303) to the axis center of the fixed shaft (401).

3. The intelligently controlled SF6 cabinet according to claim 1 is characterized in that: The distance from the tooth peak of the arc-shaped isolation rack (407) to the axis center of the fixed shaft (401) is equal to the distance from the tooth valley at the lower end of the isolation transmission gear (203) to the axis center of the fixed shaft (401).

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