Inflatable environment-friendly gas high-voltage switch cabinet with phase control function

Abstract

The utility model relates to an inflatable environment-friendly gas high-voltage switch cabinet with a phase control function, and relates to the technical field of high-voltage cabinets, the inflatable environment-friendly gas high-voltage switch cabinet comprises a cabinet body and a partition plate in the cabinet body, the partition plate divides the cabinet body into a three-station operation cavity and a circuit breaker cavity, a three-station mechanism is arranged in the three-station operation cavity, and a circuit breaker mechanism is arranged in the circuit breaker cavity; the three-station mechanism comprises a grounding contact, a moving contact and an equipment contact which are arranged in the three-station operation cavity, the moving contact is arranged in the three-station operation cavity in a sliding mode, and the moving contact is movably attached to the grounding contact / equipment contact; the three groups of three-station mechanisms are arranged, and the three-station mechanisms are in one-to-one correspondence with the three-phase circuits respectively. The utility model has the effects of inhibiting the generation of overcurrent and overvoltage, prolonging the service life of the switch equipment, and reducing the problem of breaking failure of the capacitor group and the reactor group.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to an inflatable environmentally friendly gas high-voltage switch cabinet with a phase control function. Background Art

[0002] The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking, etc. It can provide satisfactory technical solutions for various application occasions (especially places with harsh environment) and different user requirements. The adoption of sensor technology and the latest protection relays, coupled with advanced technical performance and light and flexible assembly solutions, can fully meet the different needs of users. The inflatable cabinet is suitable for small secondary substations, switchgear, box-type substations, residential areas, industrial and mining enterprises, large shopping malls in the power system, and is especially suitable for airports, subways, railways and other occasions with high electricity requirements.

[0003] At present, in the three-phase AC system in the field of power transmission and distribution, most of the switch equipment has a normal three-phase integrated operation mode, that is, the closing and opening operations of the three phases of the switch are completed simultaneously by closing and opening the switch. It has good performance characteristics for conventional power load disconnection and protection, but in special occasions, such as switching capacitor banks and reactors, it will produce very high inrush current and overvoltage phenomena. When the three-phase circuit is opened and closed at the same time, due to the unequal timing of the three-phase circuit, that is, when the three-phase circuit is disconnected, if there is a high current in one of the phases, it is easy to cause the switch to fail to open or close, and at the same time seriously reduce the life and performance of the switch, seriously affecting the reliable operation of the power grid and the safety of personnel, so it needs to be improved. Utility Model Content

[0004] In order to suppress the generation of overcurrent and overvoltage, extend the service life of switchgear, and reduce the problem of breaking failure of capacitor groups and reactor groups, the present application provides an inflatable environmentally friendly gas high-voltage switchgear with a phase control function.

[0005] The inflatable environmentally friendly gas high-voltage switchgear with phase control function provided in this application adopts the following technical solution:

[0006] An inflatable environmentally friendly gas high-voltage switchgear with a phase control function, comprising a partition plate arranged in the cabinet body, the partition plate divides the cabinet body into a three-station operation cavity and a circuit breaker cavity, the three-station operation cavity is provided with a three-station mechanism, and the circuit breaker cavity is provided with a circuit breaker mechanism; the three-station mechanism comprises a grounding contact, a moving contact and an equipment contact arranged in the three-station operation cavity, the moving contact is slidably arranged in the three-station operation cavity, and the moving contact is movably fitted with the grounding contact / equipment contact; the three-station mechanism is provided with three groups, and the three-station mechanism corresponds to three-phase circuits respectively; the circuit breaker mechanism comprises a pole arranged in the cabinet body, an insulating pull rod connected to the pole, a permanent magnetic structure connected to the insulating pull rod, and a circuit breaker operating component arranged at one end of the permanent magnetic structure to adjust the moving contact, and the permanent magnetic structure is connected to the equipment circuit.

[0007] By adopting the above technical solution, when it is necessary to control the three-phase circuit separately, the technician connects the circuit of the equipment through the permanent magnetic structure. When the current value in any phase circuit is zero, the permanent magnetic structure drives the insulating pull rod to move, and the insulating pull rod pulls the pole to move. Since the pole is connected to the moving contact, when the insulating pull rod drives the pole to move, the pole drives the moving contact to move, so that the moving contact is connected to the grounding contact, thereby realizing the disconnection of the equipment, thereby reducing the failure of the opening caused by overcurrent and overvoltage, and at the same time making the current intensity during opening extremely small, reducing the arc between the moving contact and the grounding contact and the equipment contact, thereby reducing the damage to the equipment caused by this and improving the service life of the equipment.

[0008] Optionally, a support plate is provided in the three-station operation cavity, the grounding contact and the equipment contact are symmetrically arranged at both ends of the support plate, a waist-shaped hole is opened in the middle of the support plate, a conductive row is slidably arranged in the middle of the support plate, the moving contact is slidably arranged in the conductive row, the pole is connected to the conductive row, and a manual adjustment mechanism for slidingly adjusting the moving contact is also provided on the outside of the cabinet.

[0009] By adopting the above technical solution, when the pole is adjusted by the circuit breaker mechanism, the pole drives the conductive bar to perform sliding adjustment, thereby causing the moving contact to slide, and the moving contact is respectively connected to the grounding contact and the equipment contact, so as to facilitate the opening and closing operations according to the real-time current conditions of the three-phase circuit. At the same time, in the case of power failure, when it is necessary to manually check whether the stroke of the moving contact can meet the requirements of opening and closing, the moving contact is adjusted by the set manual adjustment mechanism, so that the moving contact slides in the conductive bar, thereby realizing manual adjustment of the moving contact, which is convenient for manual inspection of the moving contact in the case of power failure.

[0010] Optionally, the circuit breaker operating structure includes a fixed plate arranged on the outer wall of the cabinet body, and a manual opening component arranged on the fixed plate, wherein three groups of the manual opening components are provided, and the three groups of the manual opening components correspond one-to-one to the three-phase circuits, and each group of the manual opening components is connected to the permanent magnet structure.

[0011] By adopting the above technical solution, when the equipment fails, current will still pass through the permanent magnetic structure, causing the circuit breaker to open. At this time, it is necessary to make the permanent magnetic structure less susceptible to the influence of the current and cause the circuit breaker to close. By setting a manual circuit breaker component, the position of the permanent magnetic structure is limited, so that the permanent magnetic structure is less susceptible to the influence of the current and slides, making it difficult to close the circuit breaker, thereby reducing the impact of transient current on the service life of the equipment.

[0012] Optionally, the manual opening switch assembly includes an opening switch shaft rotatably disposed in the cabinet and a pressing plate disposed on the opening switch shaft, a manual opening button is disposed on the fixed plate, the manual opening button is movably fitted with the pressing plate, and a first crank arm assembly is also rotatably disposed on the permanent magnet structure, and the first crank arm assembly is connected to the pressing plate.

[0013] By adopting the above technical solution, when manually opening the switch, the technician presses the manual opening button, so that the manual opening button presses the pressing plate, and the pressing plate drives the first crank arm assembly to rotate, and the first crank arm assembly drives the permanent magnetic structure to slide. Since the manual opening button always keeps pressing the pressing plate at this time, the first crank arm assembly is not easy to rotate, and the permanent magnetic structure is not easy to slide at this time, so that it is difficult to close the switch at this time, so that the equipment always remains open.

[0014] Optionally, the first crank arm assembly includes a main shaft rotatably set on the permanent magnetic structure and a hand separation shaft set on the main shaft, the hand separation shaft is provided with a hand separation plate, the hand separation button is movably fitted with the hand separation plate, the main shaft is rotatably set in the cabinet, the permanent magnetic structure is rotatably connected with a connecting rod, the end of the connecting rod away from the permanent magnetic structure is connected to the main shaft, and an indicator is also provided in the cabinet.

[0015] By adopting the above technical solution, when the technician presses the hand separation button, the hand separation button presses the hand separation plate, and the hand separation plate rotates, driving the hand separation shaft to rotate, and the hand separation shaft drives the main shaft to rotate. When the main shaft rotates, it drives the connecting rod to rotate. At this time, the connecting rod drives the permanent magnetic structure to move upward, so that the permanent magnetic structure resists the electromagnetic force, making it difficult to move, and thus difficult to drive the conductive bar to slide, so that the moving contact is not easy to connect with the equipment contact at this time, so as to achieve stable power off between the equipment and the high-voltage cabinet, and reduce the ablation of the moving contact and the static contact caused by the equipment.

[0016] Optionally, the indicator member includes a four-corner arm rotatably arranged on the main shaft and an indicator plate rotatably arranged on the four-corner arm.

[0017] By adopting the above technical solution, when the technician presses the manual opening button, the permanent magnet structure resists the electromagnetic force, thereby realizing the opening of the switch. At this time, during the rotation of the main shaft, the four corner arms are driven to rotate, and the rotation of the four corner arms drives the indicator sign to rotate, so that external technicians can intuitively judge the opening / closing status of the high-voltage cabinet at this time, which is convenient for daily inspection and maintenance work.

[0018] Optionally, a driving crank arm is rotatably connected to the main shaft, a limit pin is provided on the opening shaft, and the end of the driving crank arm away from the end connected to the main shaft is movably pressed against the limit pin.

[0019] By adopting the above technical scheme, when electromagnetic closing is performed, the permanent magnetic structure first slides under the action of electromagnetic force, driving the connecting rod to rotate, the connecting rod drives the main shaft to rotate, the main shaft drives the four-corner arm and the driving crank arm to rotate, and the driving crank arm is pressed against the limit pin when rotating, so that the opening shaft at this time rotates, and the hand-opening plate at this time presses against the hand-opening button to move, so that the hand-opening button is in a closed state; when manual opening and closing is required, the technician first presses the hand-opening button, and the hand-opening button presses the hand-opening plate to drive the opening shaft to rotate. On the one hand, the limit pin on the opening shaft presses against the driving crank arm to rotate the driving crank arm, and the driving crank arm drives the main shaft to rotate, and the rotation of the main shaft drives the permanent magnetic structure to slide; on the other hand, the hand-opening plate drives the hand-opening shaft to rotate, and the hand-opening shaft drives the main shaft to rotate, thereby driving the connecting rod to drive the permanent magnetic structure, so that the permanent magnetic structure moves, and the opening of the equipment is realized.

[0020] Optionally, a connecting plate is rotatably connected to the opening shaft, and a second crank arm is rotatably connected to the hand opening shaft, one end of the second crank arm is rotatably connected to the main shaft, and the end of the second crank arm away from the rotationally connected to the main shaft is movably pressed against the end of the connecting plate away from the rotationally connected to the opening shaft.

[0021] By adopting the above technical solution, when the technician presses the manual separation button, the separation shaft rotates to drive the connecting plate to rotate, and the connecting plate presses against the end side of the second crank arm, thereby driving the permanent magnet structure to slide. The connecting plate and the second crank arm, the limit pin and the driving crank arm, and the manual separation plate and the manual separation shaft are triple driven, thereby improving the efficiency of the sliding drive of the permanent magnet structure.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the three-position mechanism, permanent magnet structure, and circuit breaker operating components, the three-phase circuit of the equipment can be automatically opened and closed according to the current value in the three-phase circuit, reducing contact erosion caused by overcurrent / overvoltage problems and extending the service life of the equipment;

[0024] 2. A support plate, a conductive bar connected to the pole and slidably arranged on the support plate, and a manual adjustment mechanism arranged on the support plate for slidingly adjusting the moving contact;

[0025] 3. Through the provision of the hand-opening button, hand-opening plate, hand-opening shaft, main shaft and the connecting rod provided on the main shaft and connected to the permanent magnetic structure, when the technician needs to manually open the gate, the technician presses the hand-opening button to make the hand-opening button abut against the hand-opening plate and rotate, thereby driving the hand-opening shaft, main shaft and connecting rod to rotate, thereby driving the permanent magnetic structure to slide and realize manual opening of the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 It is the overall structure of another perspective of the embodiment of the present application;

[0028] Figure 3 It is a schematic diagram of the connection structure of the three-station mechanism;

[0029] Figure 4 It is a schematic diagram of the connection structure of the circuit breaker operating mechanism;

[0030] Figure 5 It is a schematic diagram of the connection structure of the manual opening component;

[0031] Figure 6 It is a schematic diagram of the connection structure of the manual opening component and the circuit breaker operating mechanism.

[0032] Figure numerals: 1, cabinet; 11, side plate; 12, fixed plate; 121, grounding bar; 13, busbar; 2, three-position mechanism; 21, grounding contact; 211, grounding pile head; 22, conductive bar; 221, moving contact; 23, equipment contact; 24, manual adjustment mechanism; 25, equipment pile head; 26, support seat; 27, support plate; 28, upper clamp; 29, lower clamp; 3, circuit breaker operating mechanism; 31, pole; 3 2. Insulating pull rod; 33. Base; 34. Guide ring; 35. Bellows; 36. Mounting plate; 37. Driving rod; 38. Permanent magnet structure; 4. Manual opening assembly; 41. Manual opening button; 42. Opening shaft; 43. Driving block; 44. Main shaft; 45. Manual opening shaft; 46. Manual opening plate; 47. Connecting plate; 48. Opening arm; 411. Driving arm; 412. Travel switch; 413. Status indicator; 414. Four-corner arm. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The embodiment of the present application discloses an inflatable environmentally friendly gas high-voltage switchgear with a phase control function. Figure 1 and Figure 2 An inflatable environmentally friendly gas high-voltage switchgear with a phase control function includes a vertically fixed cabinet body 1, the cabinet body 1 includes a fixing plate 12 and a side plate 11, and mounting holes for the female coupling pipe to pass through are opened on the two opposite side plates 11. There are three groups of mounting holes, and the mounting holes on the two opposite side plates 11 are arranged relatively to each other. In the present application, the mounting holes are polygonal square holes.

[0035] The cabinet 1 is divided into a three-station operation cavity and a circuit breaker cavity, and the three-station operation cavity is located directly above the circuit breaker cavity. A three-station mechanism 2 is arranged in the three-station operation cavity, and a circuit breaker mechanism is arranged in the circuit breaker cavity.

[0036] The three-station mechanism 2 includes a support plate 27 horizontally arranged in the cabinet 1, a moving contact 221 slidably arranged on the support plate 27, an equipment contact 23 and a grounding contact 21 arranged on the support plate 27, and the moving contact 221 is movably pressed against the equipment contact 23 / grounding contact 21.

[0037] Reference Figure 2 and Figure 3 There are three groups of three-station mechanisms 2, and the three groups of three-station mechanisms 2 are evenly spaced along the width direction of the support plate 27. In each group, the ground contact 21, the moving contact 221, and the equipment contact 23 correspond to one-phase circuit.

[0038] A sliding hole is provided in the middle of the support plate 27, and the sliding hole is provided along the length direction of the support plate 27. A conductive bar 22 is slidably arranged in each sliding hole, and a moving contact 221 is arranged on the conductive bar 22. There are also three groups of circuit breaker mechanisms, and the three groups of circuit breaker mechanisms correspond one to one with the three groups of three-station mechanisms 2, that is, each conductive bar 22 is connected to a corresponding circuit breaker mechanism.

[0039] A busbar 13 is also fixedly connected above the three-station operation cavity in the cabinet 1, and the busbar 13 is connected to the three busbar sleeves. An upper clamp 28 and a lower clamp 29 are fixedly connected to the fixing plate 12 at the square hole in the cabinet 1, and a gap is left between the upper clamp 28 and the lower clamp 29 for placing the support plate 27, and the upper clamp 28, the support plate 27, and the lower clamp 29 are fixed by screws.

[0040] The inner side of the fixing plate 12 is fixedly connected with a grounding bar and a grounding stud 211 , the grounding contact 21 is fixedly connected to the grounding stud 211 , and three grounding contacts 21 are evenly spaced and arranged on the grounding stud 211 along the width direction of the supporting plate 27 .

[0041] Similarly, in order to realize the opening / closing of the equipment during the sliding of the conductive bar 22, it is necessary to ensure that the grounding contact 21 and the equipment contact 23 are in the same straight line. Therefore, the end of the support plate 27 away from the grounding post 211 is fixedly connected to the support base 26, and the support base 26 is arranged perpendicular to the support plate 27. The equipment post 25 is fixed to the support base 26 by screws. The equipment post 25 is connected to the circuit of the equipment, and the equipment contact 23 is fixed to the side of the equipment post 25 close to the inner wall of the fixed plate 12 by screws. The equipment contact 23, the moving contact 221, and the grounding contact 21 are arranged in the same straight line.

[0042] Since the circuit breaker cannot be used under some working conditions and the travel of the moving contact 221 needs to be manually adjusted to achieve the opening / closing state, a manual adjustment mechanism 24 is also provided on the outer side of the fixing plate 12 of the cabinet 1. It should be noted that the manual adjustment mechanism 24 in this application does not show a specific structure, but this application proposes a manual adjustment mechanism 24, referring to Figure 2 and Figure 3 As shown, the grounding contact 21, the equipment contact 23 and the moving contact 221 are all hollow, so the manual adjustment mechanism 24 includes a screw rotatably set on the fixed plate 12, the screw passes through the moving contact 221 and is rotatably connected with the equipment contact 23 and the grounding contact 21, the screw is threadedly adapted to the moving contact 221, when the position of the moving contact 221 needs to be manually adjusted, the screw is rotated by driving the outside of the cabinet 1, and the moving contact 221 is limited by the conductive bar 22 and the sliding groove, and only moves along the length direction of the screw, so that the moving contact 221 is tightly fitted with the grounding contact 21 / equipment contact 23, thereby realizing manual opening and manual closing.

[0043] Further references Figure 4 , Figure 5 and Figure 6The circuit breaker operating mechanism 3 includes a pole 31 disposed in the circuit breaker cavity and a permanent magnet mechanism disposed in the circuit breaker cavity. The pole 31 is arranged horizontally, and the side wall of the pole 31 is fixed to the conductive bar 22 by welding. The end of the pole 31 away from the inner wall of the cabinet 1 is fixedly connected to an insulating pull rod 32, and the side of the pole 31 away from the inner wall of the cabinet 1 is fixedly connected to a mounting plate 36, and the mounting plate 36 is fixed to the fixing plate 12 of the cabinet 1. The end of the permanent magnet structure 38 close to the pole 31 is fixedly connected to a driving rod 37, and the driving rod 3 7 and the insulating pull rod 32 are fixedly connected with a bellows 35, a base 33 is provided between the pole 31 and the fixed plate 12, and the driving rod 37 is made of paramagnetic material, and the driving rod 37 is movably fitted with the permanent magnetic structure 38. When a positive current flows through the permanent magnetic structure 38, the permanent magnetic structure 38 generates a positive suction force, and the permanent magnetic structure 38 and the driving rod 37 move toward the direction of the pole 31 to close the circuit breaker; when a reverse current flows through the permanent magnetic structure 38, the permanent magnetic structure 38 and the driving rod 37 move away from the pole 31, and the circuit breaker opens.

[0044] At the same time, a manual opening component 4 for manual opening is also provided on the fixed plate 12 of the cabinet 1. A driving block 43 is provided at one end of the permanent magnet mechanism away from the pole 31. The manual opening component 4 is provided with three groups, corresponding to the three groups of circuit breaker mechanisms respectively. The manual opening component 4 includes an opening shaft 42 rotatably arranged in the cabinet 1. The rotation direction of the opening shaft 42 is horizontal and perpendicular to the length direction of the pole 31. A hand-opening plate 46 is fixedly connected to the opening shaft 42. A hand-opening button 41 is movably arranged on the fixed plate 12. The hand-opening button 41 movably passes through the fixed plate 12 and fits with the hand-opening plate 46. A first crank arm component is also provided between the hand-opening plate 46 and the permanent magnet structure 38. When performing manual opening, the technician presses the hand-opening button 41, and the hand-opening button 41 presses against the hand-opening plate 46. Under the action of the first crank arm component, the permanent magnet structure 38 moves in a direction away from the pole 31 to achieve opening.

[0045] For ease of understanding, the following texts are for reference only. Figure 6The direction in the figure is explained, and it does not mean that the protection scope of the present application is limited by this. The first crank arm assembly includes a main shaft 44 rotatably set in the cabinet 1, a hand separation shaft 45 rotatably set on the main shaft 44, and a connecting rod rotatably set on the permanent magnet structure 38. The main shaft 44 at one end of the connecting rod is connected, and a connecting plate 47 is fixedly connected to the opening shaft 42. The hand separation shaft 45 is rotatably connected to the second crank arm, and a hand separation plate 46- is provided on the hand separation shaft 45. The hand separation plate 46- is set between the hand separation button 41 and the hand separation plate 46-, and one end of the second crank arm is connected to the main shaft 44. The main shaft 44 is rotatably connected, and the other end of the second crank arm is movably pressed against the connecting plate 47. When the hand-opening button 41 is pressed, the hand-opening button 41 presses the hand-opening plate 461, and the hand-opening plate 461 drives the hand-opening shaft 45 to rotate counterclockwise. At the same time, the hand-opening plate 461 drives the hand-opening plate 462 and the opening shaft 42 to rotate clockwise, so that the connecting plate 47 rotates at this time, and the connecting plate 47 is pressed against the second crank arm to rotate, and the second crank arm further drives the hand-opening shaft 45 to rotate, thereby driving the main shaft 44 to rotate, and then driving the permanent magnet structure 38 to slide upward to realize the opening of the gate.

[0046] When further breaking the circuit, the technician needs to know the status of the circuit breaker in time, so an indicator is also provided in the cabinet 1, which includes an indicator plate rotatably set in the cabinet 1, and a four-corner arm 414 rotatably connected to the main shaft 44, one corner of the four-corner arm 414 is rotatably connected to the indicator plate, and a travel switch 412 is also provided in the cabinet 1, and a roller is rotatably connected to another corner of the four-corner arm 414, the roller is tightly pressed against the travel switch 412, and when the roller rolls on the travel switch 412, the state of the travel switch 412 is switched.

[0047] A driving crank arm 411 is rotatably connected to the main shaft 44 , and a limiting pin is provided on the gate-opening shaft 42 . The end of the driving crank arm 411 away from the connection with the main shaft 44 is movably pressed against the limiting pin.

[0048] The implementation principle of an inflatable environmentally friendly gas high-voltage switch cabinet with a phase-controlled function in an embodiment of the present application is as follows: when the permanent magnet mechanism is energized, it is attracted downward in a straight line direction, driving the drive block 43 to move downward. There is a rack on the main shaft 44 that cooperates with the drive block 43 to rotate clockwise. Since one end of the driving crank arm 411 is connected to the main shaft 44 and the other end is connected to a corner of the four-corner arm 414 through a connecting plate 47, one corner of the four-corner crank arm is fixed to the frame with a screw shaft. At this time, the driving crank arm 411 rotates in a clockwise direction together with the main shaft 44, and the four-corner crank arm rotates counterclockwise along the screw shaft. At the same time, a roller at one corner of the four-corner crank arm presses on the travel switch 412 component to switch the state of the travel switch 412; at the same time, one corner of the four-corner crank arm drives the status indicator 413 to rotate for status indication. When the permanent magnet mechanism is in full swing, the driving crank arm 411 contacts the opening crank arm 48 and has a certain stroke, driving the opening shaft 42 to rotate counterclockwise, and finally stops at the contact position between the opening crank arm 48 and the driving crank arm 411; at this time, the opening shaft 42 drives the second crank arm fixed on the manual opening shaft 45 to rotate clockwise through the connecting plate 47; since the manual opening plate 46 and the second crank arm are fixedly connected to the manual opening shaft 45, the manual opening plate 46 also rotates clockwise and finally stays in the state position. When the permanent magnet mechanism performs electric operation to open the gate, the above-mentioned action process also moves in the opposite direction. When manual opening operation is adopted, the manual opening button 41 is pressed, the manual opening plate 46 is pushed to rotate counterclockwise along the manual opening shaft 45, and the opening crank arm 48 is driven to press the driving crank arm 411 to complete the opening action. Due to the effect of the limit pin, the opening crank arm 48 can be limited to the corresponding position in the opening and closing positions.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An inflatable environmentally friendly gas high-voltage switchgear with phase control function, characterized in that: It comprises a cabinet (1) and a partition arranged in the cabinet (1), wherein the partition divides the cabinet (1) into a three-station operation cavity and a circuit breaker cavity, wherein a three-station mechanism is arranged in the three-station operation cavity, and a circuit breaker mechanism is arranged in the circuit breaker cavity; The three-station mechanism comprises a grounding contact (21), a moving contact (221) and a device contact (23) arranged in the three-station operation cavity; the moving contact (221) is slidably arranged in the three-station operation cavity, and the moving contact (221) is movably fitted with the grounding contact (21) / device contact (23); the three-station mechanism is provided with three groups, and the three-station mechanisms correspond to the three-phase circuits one by one respectively; The circuit breaker mechanism comprises a pole (31) arranged in the cabinet (1), an insulating pull rod (32) connected to the pole (31), a permanent magnetic structure (38) connected to the insulating pull rod (32), and a circuit breaker operating component arranged at one end of the permanent magnetic structure (38) for adjusting the moving contact (221), wherein the permanent magnetic structure (38) is connected to the equipment circuit, and the circuit breaker mechanism is also provided with three groups, the three groups of circuit breaker mechanisms correspond to the three groups of three-station mechanisms one by one, and the pole (31) is connected to the moving contact (221).

2. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 1 is characterized in that: A support plate (27) is provided in the three-station operation cavity, the grounding contact (21) and the equipment contact (23) are symmetrically arranged at two ends of the support plate (27), a waist-shaped hole is opened in the middle of the support plate (27), a conductive row (22) is slidably arranged in the middle of the support plate (27), the moving contact (221) is slidably arranged in the conductive row (22), the pole (31) is connected to the conductive row (22), and a manual adjustment mechanism (24) for slidingly adjusting the moving contact (221) is also provided on the outer side of the support plate (27).

3. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 2 is characterized in that: The circuit breaker operating assembly comprises a fixed plate (14) arranged on the outer wall of the cabinet (1), and a manual opening assembly (4) arranged on the fixed plate (14), wherein three groups of the manual opening assemblies (4) are provided, the three groups of the manual opening assemblies (4) corresponding one to one with the three-phase circuits, and each group of the manual opening assemblies (4) is connected to the permanent magnetic structure (38).

4. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 3 is characterized in that: The manual opening switch assembly (4) comprises an opening switch shaft (42) rotatably arranged in the cabinet (1) and a pressing plate arranged on the opening switch shaft (42); a manual opening button (41) is arranged on the fixed plate (14); the manual opening button (41) is movably fitted with the pressing plate; and a first crank arm assembly is also rotatably arranged on the permanent magnet structure (38); the first crank arm assembly is connected to the pressing plate.

5. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 4 is characterized in that: The first crank arm assembly comprises a main shaft (44) rotatably arranged on the permanent magnetic structure (38) and a hand separation shaft (45) arranged on the main shaft (44); a hand separation plate (46) is provided on the hand separation shaft (45); the hand separation button (41) is movably fitted with the hand separation plate (46); the main shaft (44) is rotatably arranged in the cabinet (1); a connecting rod is rotatably connected to the permanent magnetic structure (38); an end of the connecting rod away from the permanent magnetic structure (38) is connected to the main shaft (44); and an indicator is also provided in the cabinet (1).

6. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 5, characterized in that: The indicator comprises a four-corner arm (414) rotatably arranged on the main shaft (44) and an indicator plate rotatably arranged on the four-corner arm (414).

7. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 6 is characterized in that: The main shaft (44) is also rotatably connected to a driving crank arm (411), and a limit pin is provided on the opening shaft (42). The end of the driving crank arm (411) away from the end connected to the main shaft (44) is movably pressed against the limit pin.

8. The inflatable environmentally friendly gas high-voltage switchgear with phase control function according to claim 7 is characterized in that: A connecting plate (47) is rotatably connected to the opening switch shaft (42), and a second crank arm is rotatably connected to the hand opening shaft (45). One end of the second crank arm is rotatably connected to the main shaft (44), and the end of the second crank arm away from the rotationally connected to the main shaft (44) is movably pressed against the end of the connecting plate (47) away from the rotationally connected to the opening switch shaft (42).

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