CN118248491B - Horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch - Google Patents
Horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch Download PDFInfo
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- CN118248491B CN118248491B CN202410676526.5A CN202410676526A CN118248491B CN 118248491 B CN118248491 B CN 118248491B CN 202410676526 A CN202410676526 A CN 202410676526A CN 118248491 B CN118248491 B CN 118248491B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to the technical field of isolating switches, in particular to a horizontally arranged gas-insulated type closed outdoor high-voltage alternating current isolating switch, which comprises the following components: a composite insulating sleeve arranged horizontally; the conductive module comprises a fixed contact unit and a movable contact unit which are arranged in the composite insulating sleeve, realizes insulation to the ground and the interphase through a supporting insulator, and avoids the influence of external environment; and the movable contact unit of the isolating switch is driven by the bevel gear driving rod and the bevel gear driving wheel of the adjusting module, so that the movable contact unit and the fixed contact unit are separated or contacted. The invention has strong resistance to external environment influence, meets the requirement of long-term reliable operation of the isolating switch, and greatly reduces the workload of operation and maintenance staff.
Description
Technical Field
The invention relates to the technical field of isolating switches, in particular to a horizontally arranged gas-insulated closed outdoor high-voltage alternating-current isolating switch.
Background
The isolating switch is the most applied equipment in the power system, and the main functions include: the live operation and power failure overhaul equipment is isolated, so that the overhaul operation safety is ensured; the operation mode of the system is changed by matching with switching operation; the small current circuit is opened and closed. Although the operating principle and the structure of the isolating switch are relatively simple, the operating state of the isolating switch has a larger influence on the safety and stability of a power grid, and the isolating switch is key equipment with a larger influence on the reliability of facilities in a power system.
At present, a large number of fully-open outdoor high-voltage alternating current isolating switches still run in a power system and are easily influenced by external environments (rainwater, wind sand, pollution and the like), conductive contact between a conductive actuator and a static contact is degraded, the actual current capacity is obviously reduced compared with rated current indexes of nameplates due to arc ablation and heating, the porcelain insulator is supported to be stressed complex and easy to age and break, and the design and the utilization of the power transformation capacity are greatly restricted.
In addition, the large operation work of the isolating switch requires that the transmission part of the isolating switch is made of metal materials, and the operation failure of the isolating switch caused by rust and jamming of the transmission metal part often occurs under the long-time corrosion of the metal transmission part in the external environment, particularly in the high-pollution-level area.
In order to solve the above problems, the following technical solutions are generally adopted:
For example, chinese patent (CN 111933475A) discloses a high-strength anti-aging totally-enclosed outdoor high-voltage ac isolating switch, which includes a chassis, a first post insulator, a second post insulator, a conductive loop, a stationary-side contact finger seat, and a movable-side contact finger seat; the conducting loop adopts a fully-closed structure, and after the isolating switch is closed, the conducting loop is fully closed in the insulating material.
The above-mentioned document also provides a rubber cladding material, through cladding conductive knife, make insulating layer and conductor laminating inseparable, improve isolator reliability.
The technical scheme provided by the above document isolates the direct contact between the isolating switch conductive loop and the external environment to a certain extent, but the situation that the coating layer bursts and is damaged due to heat aging often occurs due to poor heat dissipation and mechanical properties of the rubber material. Meanwhile, the isolating switch still adopts the traditional metal transmission part, and the corrosion damage problem is also obvious.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the direct contact between the conductive loop of the isolating switch and the external environment in the prior art, and the conditions of bursting and breakage of the coating layer due to thermal aging often occur, so that the corrosion damage of the isolating switch is aggravated.
In order to solve the technical problems, the invention provides a horizontally arranged gas-insulated type closed outdoor high-voltage alternating-current isolating switch.
The technical scheme adopted by the invention is as follows:
A horizontally disposed, gas insulated, closed outdoor high voltage ac disconnector comprising:
the composite insulating sleeve is horizontally arranged;
The conductive module comprises a fixed contact unit and a movable contact unit which are arranged in the composite insulating sleeve;
The first support module comprises a first support insulator, a first fixing component arranged on one side of the first support insulator and an air charging and discharging valve arranged in the first fixing component, one side of the composite insulating sleeve is fixedly connected with the first fixing component, insulating gas is injected into the composite insulating sleeve through the air charging and discharging valve, and the fixed contact unit is fixedly connected with the first fixing component;
The grounding module comprises a grounding switch fixed contact and a grounding switch movable conductive rod with a grounding switch movable contact, wherein the grounding switch fixed contact is connected with the first fixed component, and the grounding switch fixed contact and the grounding switch movable contact can be separated or contacted;
the second support module comprises a second support insulator and a second fixing assembly arranged on the second support insulator; the other side of the composite insulating sleeve is fixedly connected with the second fixing component;
The adjusting module is at least partially arranged in the second supporting module; the adjusting module comprises a horizontal bevel gear transmission rod, a horizontal bevel gear transmission wheel arranged at one end of the horizontal bevel gear transmission rod, a vertical bevel gear transmission rod and a vertical bevel gear transmission wheel arranged at one end of the vertical bevel gear transmission rod, wherein the horizontal bevel gear transmission wheel is meshed with the vertical bevel gear transmission wheel, and the other end of the horizontal bevel gear transmission rod is connected with the movable contact unit; the vertical bevel gear transmission rod is arranged in the second support insulator or is arranged in parallel with the second support insulator;
And the second operation module controls the vertical bevel gear transmission rod to rotate, so that the moving contact unit and the fixed contact unit are separated or contacted.
Preferably, the static contact unit comprises a static end base, a static end conductive main body connected with the static end base, a static side arc contact spring arranged in the static end conductive main body, a static side arc contact connected with the static side arc contact spring, a static contact finger connected with the static end conductive main body and a first shielding cover surrounding the static contact finger.
Preferably, the static contact unit further comprises a first insulating concentric positioning disc sleeved on the static end conductive main body.
Preferably, the moving contact unit comprises a moving end base, a moving end fixed conductive main body connected with the moving end base, a moving end moving conductive main body arranged in the moving end fixed conductive main body, a transmission screw arranged in the moving end moving conductive main body, an insulating sleeve arranged at one end of the transmission screw, a moving contact arranged at the end part of the moving end moving conductive main body and capable of being contacted with the static side arc contact, a moving end conductive contact finger contacted with the moving end moving conductive main body, a second shielding cover surrounding the moving end conductive contact finger, and an insulating positioning ring arranged close to the moving end conductive contact finger and arranged at the inner side of the moving end fixed conductive main body; the insulating sleeve is connected with the horizontal bevel gear transmission rod.
Preferably, the moving contact unit further comprises an insulating positioning disc block arranged at one end of the transmission screw and arranged in the moving-end moving conductive main body, a second insulating concentric positioning disc sleeved on the moving-end fixed conductive main body, and a positioning plate fixed at the end part of the moving-end moving conductive main body.
Preferably, the insulating gas is one of SF6、N2、SF6/N2、C4F7N/CO2、C4F7N/O2/CO2.
Preferably, the first fixing component comprises a first wiring terminal plate and a first protection cover arranged on one side of the first wiring terminal plate, the first protection cover and the first wiring terminal plate form a first accommodating space, and the air charging and discharging valve is arranged in the first accommodating space.
Preferably, the second fixing component comprises a second wiring terminal board and a second protection cover arranged on one side of the second wiring terminal board, the second protection cover and the second wiring terminal board form a second accommodating space, and the horizontal bevel gear driving wheel, at least part of the horizontal bevel gear driving rod, the vertical bevel gear driving wheel and at least part of the vertical bevel gear driving rod are arranged in the second accommodating space.
Preferably, the grounding switch further comprises a first operation module, and the first operation module controls the grounding switch fixed contact and the grounding switch movable contact to be separated or contacted.
Preferably, the first support module further includes a first base supporting the first support insulator and the ground module.
Preferably, the second support module further comprises a second base for supporting the second support insulator and the vertical bevel gear transmission rod.
Preferably, when the vertical bevel gear transmission rod is exposed in the air, the vertical bevel gear transmission rod is an insulating transmission rod with a umbrella skirt, and the second supporting insulator is a solid rod piece; when the vertical bevel gear transmission rod is arranged in the second supporting insulator, the vertical bevel gear transmission rod is an insulating transmission rod, and the second supporting insulator is an insulating sleeve with an inflated inside.
Compared with the prior art, the technical scheme of the invention has the following advantages:
The horizontally arranged gas insulation type outdoor high-voltage alternating current isolating switch disclosed by the invention has the advantages that important conductive movable and contact parts of the isolating switch, namely the static contact unit and the moving contact unit, are all sealed inside the composite insulating sleeve filled with insulating gas, the insulation between the ground and the phase is realized through the supporting insulator, and meanwhile, the influence of the external environment is avoided.
The horizontally arranged gas-insulated outdoor high-voltage alternating current isolating switch disclosed by the invention is characterized in that a movable contact unit and a fixed contact unit of the isolating switch are opened and closed through the bevel gear transmission rod, the bevel gear transmission wheel and the transmission screw.
The movable contact unit in the horizontally arranged gas-insulated type closed outdoor high-voltage alternating current isolating switch only performs short-distance linear motion, and has small operation work and moment; the first support insulator, the second support insulator and the composite insulating sleeve form an integral structure, and no additional unbalanced moment acts.
The design mode of the second supporting insulator and the vertical bevel gear transmission rod in the horizontally arranged gas-insulated type outdoor high-voltage alternating-current isolating switch can adopt a solid organic composite insulation rod combination, namely, the two are both in the form of a solid organic composite insulation rod or in the form of an organic composite insulation sleeve and a transmission insulation rod arranged in the organic composite insulation sleeve, and the pollution flashover preventing performance is excellent; when the mode of the organic composite insulating sleeve and the transmission insulating rod arranged in the organic composite insulating sleeve is adopted, the reasonable insulating gas pressure, the organic composite sleeve and the transmission insulating rod can ensure that the isolating switch fracture has higher insulating level.
The horizontally arranged gas-insulated type closed outdoor high-voltage alternating-current isolating switch is suitable for an outdoor type horizontally arranged isolating switch with alternating current of 35 kilovolts or more.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
Fig. 1 is a schematic diagram of a horizontally disposed gas insulated enclosed outdoor high voltage ac disconnector of the present invention.
Fig. 2 is a schematic view of a stationary contact unit in the present invention.
Fig. 3 is a schematic view of a movable contact unit in the present invention.
Fig. 4 is a schematic diagram showing connection between the movable end fixing conductive body and the positioning plate in the present invention.
Fig. 5 is a schematic diagram of another variation of the horizontally disposed gas insulated outdoor high voltage ac disconnector of the present invention.
Description of the specification reference numerals: 1. a first terminal block; 2. a first protective cover; 3. a second terminal block; 4. a second protective cover; 5. a composite insulating sleeve; 6. a stationary contact unit; 61. a stationary end base; 62. a stationary end conductive body; 63. a stationary side arcing contact spring; 64. a stationary side arcing contact; 65. a first insulating concentric locating disk; 66. a fixed contact finger; 67. a first shield; 7. a moving contact unit; 71. a moving contact; 72. a second shield; 73. an insulating positioning disc block; 74. a movable end conductive contact finger; 75. an insulating positioning ring; 76. a second insulating concentric locating disk; 77. the movable end moves the conductive main body; 78. the movable end is fixed with the conductive main body; 79. a drive screw; 710. a positioning plate; 711. an insulating sleeve; 712. a moving end base; 8. a gas charging and discharging valve; 9. a horizontal bevel gear driving wheel; 10. a horizontal bevel gear transmission rod; 11. a vertical bevel gear driving wheel; 12. a vertical bevel gear transmission rod; 13. a grounding switch static contact; 14. a grounding switch movable conducting rod; 15. a first support insulator; 16. a second support insulator; 17. a first base; 18. a first operation module; 19. a second base; 20. and a second operation module.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description of the embodiments, read in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments are, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the invention, and furthermore, like reference numerals refer to like elements throughout the embodiments.
Referring to fig. 1 to 3, a horizontally arranged gas-insulated outdoor high-voltage ac disconnecting switch, comprising:
the composite insulating sleeve 5 is horizontally arranged;
the conductive module comprises a fixed contact unit 6 and a movable contact unit 7 which are arranged in the composite insulating sleeve 5;
The first support module comprises a first support insulator 15, a first fixing component arranged on one side of the first support insulator 15 and an air charging and discharging valve 8 arranged in the first fixing component, one side of the composite insulation sleeve 5 is fixedly connected with the first fixing component, the air charging and discharging valve 8 is used for injecting insulating gas into the composite insulation sleeve 5, and the static contact unit 6 is fixedly connected with the first fixing component;
The grounding module comprises a grounding switch fixed contact 13 and a grounding switch movable conductive rod 14 with a grounding switch movable contact, wherein the grounding switch fixed contact 13 is connected with the first fixed component, and the grounding switch fixed contact 13 and the grounding switch movable contact can be separated or contacted;
The second support module comprises a second support insulator 16 and a second fixing component arranged on the second support insulator 16; the other side of the composite insulating sleeve 5 is fixedly connected with the second fixing component;
The adjusting module is at least partially arranged in the second supporting module; the adjusting module comprises a horizontal bevel gear transmission rod 10, a horizontal bevel gear transmission wheel 9 arranged at one end of the horizontal bevel gear transmission rod 10, a vertical bevel gear transmission rod 12 and a vertical bevel gear transmission wheel 11 arranged at one end of the vertical bevel gear transmission rod 12, wherein the horizontal bevel gear transmission wheel 9 is meshed with the vertical bevel gear transmission wheel 11, and the other end of the horizontal bevel gear transmission rod 10 is connected with the moving contact unit 7; wherein the vertical bevel gear transmission rod 12 is arranged in the second support insulator 16 or is arranged in parallel with the second support insulator 16;
the second operation module 20 controls the vertical bevel gear transmission rod 12 to rotate so that the moving contact unit 7 and the fixed contact unit 6 are separated or contacted.
The embodiment provides a horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch, which is characterized in that important conductive movable and contact parts of the isolating switch, namely a fixed contact unit 6 and a movable contact unit 7, are all sealed inside a composite insulating sleeve 5 filled with insulating gas, and insulation between the ground and the phase is realized through a supporting insulator, and meanwhile, the influence of external environment is avoided. The movable contact unit 7 and the fixed contact unit 6 of the isolating switch are opened and closed through the bevel gear transmission rod, the bevel gear transmission wheel and the transmission screw 79, wherein the movable contact unit 7 only performs short-distance linear motion, and the operation work and the moment are small; the first support insulator 15 and the second support insulator 16 and the composite insulation sleeve 5 form an integral structure, and no additional unbalanced moment acts.
In this embodiment, the first fixing component includes a first terminal board 1 and a first protection cover 2 disposed on one side of the first terminal board 1, the first protection cover 2 and the first terminal board 1 form a first accommodating space, the air charging/discharging valve 8 is disposed in the first accommodating space, and the first protection cover 2 is used for protecting the air charging/discharging valve 8 from the external environment. Specifically, the first wiring terminal board 1 is made of aluminum or copper alloy, is provided with a certain number of screw holes, electrically connects the isolating switch with the lead through the bolt, and fixes one end of the composite insulating sleeve 5. Further, the gas charge and discharge valve 8 may be flanked on its sleeve by a gas pressure indicator.
The second fixing component comprises a second wiring terminal board 3 and a second protection cover 4 arranged on one side of the second wiring terminal board 3, the second protection cover 4 and the second wiring terminal board 3 form a second accommodating space, at least one part of a horizontal bevel gear driving wheel 9, a horizontal bevel gear driving rod 10, at least one part of a vertical bevel gear driving wheel 11 and a vertical bevel gear driving rod 12 are arranged in the second accommodating space, and the second protection cover 4 is used for protecting the bevel gear driving wheel and the driving rod from the influence of external environment. Specifically, the second wiring terminal board 3 is made of aluminum or copper alloy, is provided with a certain number of screw holes, electrically connects the isolating switch with the lead through the bolt, and fixes the other end of the composite insulating sleeve 5.
In this embodiment, the composite insulating sleeve 5 is composed of an epoxy glass fiber insulating cylinder and a silicone rubber umbrella skirt, aluminum alloy flanges at two ends of the composite insulating sleeve are respectively connected to the first wiring terminal board 1 and the second wiring terminal board 3 through bolts, and rubber seals are arranged between the flanges and the first wiring terminal board 1 and the second wiring terminal board 3. During normal operation, SF 6 (sulfur hexafluoride) insulating gas is filled in the isolating switch to provide an insulating and sealing environment for the conducting part and the isolating fracture of the isolating switch. It should be noted that, or one insulating gas or other insulating gas of the mixed gas of N 2 (nitrogen), SF 6 and N 2, the mixed gas of C 4F7 N (perfluoroisobutyronitrile) and CO 2 (carbon dioxide) and the mixed gas of C 4F7N、O2 and CO 2 may be filled in the insulating switch to provide an insulating and sealing environment for the conductive part and the isolation fracture of the isolation switch.
In this embodiment, as shown in fig. 2, the stationary contact unit 6 includes a stationary end base 61, a stationary end conductive body 62 connected to the stationary end base 61, a stationary side arc contact spring 63 provided in the stationary end conductive body 62, a stationary side arc contact 64 connected to the stationary side arc contact spring 63, a stationary contact finger 66 connected to the stationary end conductive body 62, and a first shield 67 surrounding the stationary contact finger 66.
Specifically, the static end conductive main body 62 is made of aluminum alloy or copper, is connected and fixed on the static end base 61 through a bolt, and is connected with the static contact finger 66 to form a flow guiding part of the static end of the isolating switch. Of course, the stationary conductive body 62 and the stationary base 61 may also be made as an integral component.
The static side arc contact spring 63 is arranged inside the axis of the static end conductive main body 62, so that the static side arc contact 64 is ensured to protect the static contact finger 66 when the isolating switch is switched on and off.
The fixed side arc contact 64 is a brass rod with a copper tungsten alloy coated at the front end part, and is used for breaking small current to protect the fixed contact finger 66 from arc ablation damage during switching on and off. The front end here means the end of the stationary side arcing contact 64 near the moving contact unit 7.
The stationary contact fingers 66 are arranged circumferentially with their conductive contact surfaces silver plated.
The first shield 67 is typically an aluminum alloy to improve the electric field distribution around the stationary contact fingers 66.
Further, the stationary contact unit 6 further includes a first insulating concentric positioning disk 65 sleeved on the stationary conductive body 62. Specifically, the first insulating concentric positioning disk 65 is made of an epoxy resin composite material and is used for concentrically positioning the fixed contact unit 6.
In this embodiment, as shown in fig. 3, the moving contact unit 7 includes a moving end base 712, a moving end fixed conductive body 78 connected to the moving end base 712, a moving end moving conductive body 77 provided in the moving end fixed conductive body 78, a drive screw 79 provided in the moving end moving conductive body 77, an insulating sleeve 711 provided at one end of the drive screw 79, a moving contact 71 provided at an end of the moving end moving conductive body 77 and contactable with the stationary side arcing contact 64, a moving end conductive contact finger 74 contacted with the moving end moving conductive body 77, a second shield 72 surrounding the moving end conductive contact finger 74, and an insulating positioning ring 75 provided near the moving end conductive contact finger 74 and provided inside the moving end fixed conductive body 78; the insulating sleeve 711 is connected to the horizontal bevel gear transmission rod 10.
Specifically, the moving contact 71 is composed of a copper tungsten alloy arc contact and a copper conductor, and the surface of the copper conductor is plated with silver.
The second shield 72 is typically an aluminum alloy for improving the electric field distribution around the moving contact 71 and the moving-end conductive finger 74.
The movable-end conductive contact fingers 74 are circumferentially arranged, and the conductive contact surfaces thereof are silver-plated, so that good contact with the movable-end movable conductive body 77 is always maintained.
The insulating positioning ring 75 is made of an epoxy resin composite material, is arranged on the inner side of the moving end fixing conductive main body 78 close to the moving end conductive contact finger 74, and is used for insulating and positioning the moving end fixing conductive main body 78 and the moving end moving conductive main body 77, so that the action reliability of the moving end moving conductive main body 77 is improved.
The movable end moving conductive body 77 is a copper tube with silver plated on the outer surface and is connected with the movable contact 71, and a tail end threaded tube of the movable end moving conductive body 77 is meshed with the transmission screw 79.
The movable end fixing conductive body 78 is an aluminum alloy or copper tube, and the upper and lower sides of the inner surface of the movable end fixing conductive body are respectively provided with a through length positioning groove. One end of the moving end fixing conductive body 78 is fixed on the moving end base 712 through a bolt, and the other end is reliably and conductively connected with the moving end conductive contact finger 74 and forms a flow guiding part of the moving end of the isolating switch with the moving end moving conductive body 77.
The transmission screw 79 is generally made of steel, the outer surface of the transmission screw is provided with threads, and the transmission of the horizontal bevel gear transmission rod 10 is used for controlling the linear movement of the movable end moving conductive main body 77 for the opening and closing operation of the isolating switch contact.
The insulating sleeve 711 connects the drive screw 79 with the horizontal bevel gear drive rod 10 and prevents the drive screw 79 from passing current.
Further, referring to fig. 3 and 4, the moving contact unit 7 further includes an insulating positioning disk block 73 disposed at one end of the driving screw 79 and disposed in the moving-end moving conductive body 77, a second insulating concentric positioning disk 76 sleeved on the moving-end fixed conductive body 78, and a positioning plate 710 fixed at an end of the moving-end moving conductive body 77. Wherein the insulating positioning disk block 73 is used to position the drive screw 79 and keep it coaxial with the moving-end moving conductive body 77. The second insulating concentric positioning disk 76 is made of epoxy resin composite material and is used for concentrically positioning the movable contact unit 7. The positioning plate 710 is fixed to the tail end of the moving-end moving conductive body 77 for keeping the moving-end moving conductive body 77 and the moving-end fixed conductive body 78 coaxial and preventing the moving-end moving conductive body 77 from rotating with the driving screw 79.
It should be noted that, in the case of disconnecting the disconnector, the distance between the moving contact unit 7 and the stationary contact unit 6 is determined according to the insulation level required by the voltage class of the device and the type of the gas to be inflated, the pressure.
In this embodiment, the gas-insulated outdoor high-voltage ac isolating switch further includes a first operation module 18, where the first operation module 18 controls the ground switch fixed contact 13 and the ground switch moving contact to be separated or contacted. The first operation module 18 adopts an electric operation mechanism or a manual operation mechanism. Of course, the second operation module 20 also adopts an electric operation mechanism or a manual operation mechanism.
In this embodiment, the first support module further comprises a first base 17 supporting the first support insulator 15 and the grounding module.
In this embodiment, the second support module further comprises a second base 19 supporting the second support insulator 16 and the vertical bevel gear lever 12.
It should be noted that, when the vertical bevel gear transmission rod 12 is exposed to air, the vertical bevel gear transmission rod 12 is an insulating transmission rod with a shed, and the second supporting insulator 16 is a solid rod, as shown in fig. 1; when the vertical bevel gear transmission rod 12 is placed in the second supporting insulator 16, the vertical bevel gear transmission rod 12 is an insulating transmission rod, and the second supporting insulator 16 is an insulating sleeve with air filled inside, namely, the vertical bevel gear transmission rod 12 is provided with no umbrella skirt, so that space is saved, and the structure is simplified, as shown in fig. 5. Specifically, the second supporting insulator 16 may be a porcelain insulator or a composite insulator, two ends of the second supporting insulator 16 are respectively provided with a fixing flange, and are respectively connected with the second wiring terminal board 3 and the second base 19 through bolts, so that the supporting mechanical strength and the insulation to the ground of related components such as the composite insulating sleeve 5 are ensured.
It will be appreciated that the second support insulator 16 and the vertical bevel gear transmission rod 12 may be designed in a solid organic composite insulator rod combination, i.e. both in the form of a solid organic composite insulator rod, i.e. the vertical bevel gear transmission rod 12 may be designed in the case of exposure to air, or the organic composite insulator sleeve and the transmission insulator rod disposed therein, i.e. the vertical bevel gear transmission rod 12 may be designed in the case of being disposed within the second support insulator 16, which is excellent in anti-fouling performance; when the mode of the organic composite insulating sleeve and the transmission insulating rod arranged in the organic composite insulating sleeve is adopted, the reasonable insulating gas pressure, the organic composite sleeve and the transmission insulating rod can ensure that the isolating switch fracture has higher insulating level.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (5)
1. A horizontally arranged gas insulated enclosed outdoor high voltage ac disconnector, comprising:
a composite insulating sleeve (5) horizontally arranged;
the conductive module comprises a fixed contact unit (6) and a movable contact unit (7) which are arranged in the composite insulating sleeve (5);
The first support module comprises a first support insulator (15), a first fixing component arranged on one side of the first support insulator (15) and an air charging and discharging valve (8) arranged in the first fixing component, one side of the composite insulation sleeve (5) is fixedly connected with the first fixing component, insulating gas is injected into the composite insulation sleeve (5) through the air charging and discharging valve (8), and the static contact unit (6) is fixedly connected with the first fixing component;
the grounding module comprises a grounding switch fixed contact (13) and a grounding switch movable conductive rod (14) with a grounding switch movable contact, wherein the grounding switch fixed contact (13) is connected with the first fixed component, and the grounding switch fixed contact (13) and the grounding switch movable contact can be separated or contacted;
the second support module comprises a second support insulator (16) and a second fixing assembly arranged on the second support insulator (16); the other side of the composite insulating sleeve (5) is fixedly connected with the second fixing component;
The adjusting module is at least partially arranged in the second supporting module; the adjusting module comprises a horizontal bevel gear transmission rod (10), a horizontal bevel gear transmission wheel (9) arranged at one end of the horizontal bevel gear transmission rod (10), a vertical bevel gear transmission rod (12) and a vertical bevel gear transmission wheel (11) arranged at one end of the vertical bevel gear transmission rod (12), wherein the horizontal bevel gear transmission wheel (9) is meshed with the vertical bevel gear transmission wheel (11), and the other end of the horizontal bevel gear transmission rod (10) is connected with the moving contact unit (7); wherein the vertical bevel gear transmission rod (12) is arranged in the second support insulator (16) or is arranged in parallel with the second support insulator (16);
The second operation module (20) controls the vertical bevel gear transmission rod (12) to rotate so that the movable contact unit (7) and the fixed contact unit (6) are separated or contacted;
The static contact unit (6) comprises a static end base (61), a static end conductive main body (62) connected with the static end base (61), a static side arc contact spring (63) arranged in the static end conductive main body (62), a static side arc contact (64) connected with the static side arc contact spring (63), a static contact finger (66) connected with the static end conductive main body (62) and a first shielding cover (67) surrounding the static contact finger (66); the static end conductive main body (62) is made of aluminum alloy or copper, is connected and fixed on the static end base (61) through bolts, and is connected with the static contact finger (66) to form a flow guide part of the static end of the isolating switch; the static side arc contact (64) is a brass rod with a front end covered with copper-tungsten alloy; the static contact unit (6) further comprises a first insulating concentric positioning disc (65) sleeved on the static end conductive main body (62);
The movable contact unit (7) comprises a movable end base (712), a movable end fixed conductive main body (78) connected with the movable end base (712), a movable end movable conductive main body (77) arranged in the movable end fixed conductive main body (78), a transmission screw (79) arranged in the movable end movable conductive main body (77), an insulating sleeve (711) arranged at one end of the transmission screw (79), a movable contact (71) arranged at the end of the movable end movable conductive main body (77) and capable of being contacted with the static side arc contact (64), a movable end conductive contact finger (74) contacted with the movable end movable conductive main body (77), a second shielding cover (72) surrounding the movable end conductive contact finger (74), and an insulating positioning ring (75) arranged close to the movable end conductive contact finger (74) and arranged at the inner side of the movable end fixed conductive main body (78); the insulating sleeve (711) is connected with the horizontal bevel gear transmission rod (10); the movable contact (71) is composed of a copper tungsten alloy arc contact and a copper conductor, and the surface of the copper conductor is plated with silver; the movable end conductive contact fingers (74) are circumferentially arranged, and the conductive contact surfaces of the movable end conductive contact fingers are silver-plated, so that good contact with the movable end movable conductive main body (77) is always kept; the insulating positioning ring (75) is made of an epoxy resin composite material, is arranged on the inner side of a movable end fixed conductive main body (78) close to the movable end conductive contact finger (74), and is used for insulating and positioning between the movable end fixed conductive main body (78) and the movable end movable conductive main body (77); the movable contact unit (7) further comprises an insulating positioning disc block (73) arranged at one end of the transmission screw (79) and arranged in the movable end moving conductive main body (77), a second insulating concentric positioning disc (76) sleeved on the movable end fixed conductive main body (78) and a positioning plate (710) fixed at the end part of the movable end moving conductive main body (77); the movable end moving conductive body (77) is a silver-plated copper tube on the outer surface and is connected with the movable contact (71), and a tail end threaded tube of the movable end moving conductive body (77) is meshed with the transmission screw (79); the movable end fixed conductive main body (78) is an aluminum alloy or copper pipe, and the upper side and the lower side of the inner surface of the movable end fixed conductive main body are respectively provided with a through length positioning groove; one end of the movable end fixed conductive main body (78) is fixed on the movable end base (712) through a bolt, and the other end of the movable end fixed conductive main body is in conductive connection with the movable end conductive contact finger (74) and forms a flow guide part of the movable end of the isolating switch with the movable end movable conductive main body (77);
The first fixing assembly comprises a first wiring terminal board (1) and a first protection cover (2) arranged on one side of the first wiring terminal board (1), the first protection cover (2) and the first wiring terminal board (1) form a first accommodating space, and the air charging and discharging valve (8) is arranged in the first accommodating space;
the second fixing assembly comprises a second wiring terminal board (3) and a second protection cover (4) arranged on one side of the second wiring terminal board (3), the second protection cover (4) and the second wiring terminal board (3) form a second accommodating space, and the horizontal bevel gear driving wheel (9), at least one part of the horizontal bevel gear driving rod (10), the vertical bevel gear driving wheel (11) and at least one part of the vertical bevel gear driving rod (12) are arranged in the second accommodating space;
When the vertical bevel gear transmission rod (12) is exposed in the air, the vertical bevel gear transmission rod (12) is an insulating transmission rod with a umbrella skirt, and the second supporting insulator (16) is a solid rod piece; when the vertical bevel gear transmission rod (12) is arranged in the second supporting insulator (16), the vertical bevel gear transmission rod (12) is an insulating transmission rod, and the second supporting insulator (16) is an insulating sleeve with an inflated inside.
2. The horizontally disposed, gas insulated, closed, outdoor, high voltage ac disconnector of claim 1 wherein said insulating gas is one of SF6、N2、SF6/N2、C4F7N/CO2、C4F7N/O2/CO2.
3. The horizontally arranged gas insulated outdoor high voltage ac disconnector according to claim 1, further comprising a first operating module (18), said first operating module (18) controlling the ground switch stationary contact (13) and the ground switch movable contact to be separated or in contact.
4. The horizontally arranged, gas insulated, closed outdoor high voltage ac disconnector according to claim 1, characterized in that said first support module further comprises a first base (17) supporting said first support insulator (15) and said grounding module.
5. The horizontally arranged, gas insulated, closed outdoor high voltage ac disconnector according to claim 1, characterized in that said second support module further comprises a second base (19) supporting said second support insulator (16) and said vertical bevel gear transmission rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410676526.5A CN118248491B (en) | 2024-05-29 | 2024-05-29 | Horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410676526.5A CN118248491B (en) | 2024-05-29 | 2024-05-29 | Horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch |
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| CN118248491A CN118248491A (en) | 2024-06-25 |
| CN118248491B true CN118248491B (en) | 2024-09-06 |
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| CN202410676526.5A Active CN118248491B (en) | 2024-05-29 | 2024-05-29 | Horizontal arrangement gas insulation type closed outdoor high-voltage alternating current isolating switch |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115050603A (en) * | 2022-03-31 | 2022-09-13 | 西安西电高压开关有限责任公司 | Closed isolating switch |
| CN115512997A (en) * | 2022-10-09 | 2022-12-23 | 山东泰开高压开关有限公司 | Double-break isolating switch for GIS and use method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2594607B1 (en) * | 1986-02-14 | 1988-04-29 | Merlin Gerin | SUB-DIVIDED SHIELDED STATION IN WATERTIGHT COMPARTMENTS |
| CN217881294U (en) * | 2022-07-15 | 2022-11-22 | 正泰电气股份有限公司 | Moving-side multifunctional conductor of isolating switch and isolating switch |
| CN115662827A (en) * | 2022-11-04 | 2023-01-31 | 国网内蒙古东部电力有限公司赤峰供电公司 | Door type totally-enclosed isolating switch structure |
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- 2024-05-29 CN CN202410676526.5A patent/CN118248491B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115050603A (en) * | 2022-03-31 | 2022-09-13 | 西安西电高压开关有限责任公司 | Closed isolating switch |
| CN115512997A (en) * | 2022-10-09 | 2022-12-23 | 山东泰开高压开关有限公司 | Double-break isolating switch for GIS and use method thereof |
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| CN118248491A (en) | 2024-06-25 |
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