A pole-mounted disconnector with opening and closing position confirmation function

Abstract

The application is suitable for the technical field of power electronic component manufacturing, and provides a pole-mounted isolating switch with closing and opening position confirmation function; comprising: a base; two insulators; a first contact installed on one of the insulators; a connecting contact assembly installed on the other insulator, the contact assembly comprising a mounting seat fixedly installed on the insulator and a rotating shaft made of insulating material rotatably installed on the mounting seat, an insulating handle being installed on the rotating shaft, a connecting shutter being installed on the rotating shaft and connected with the second contact; a position locking and pre-tightening mechanism arranged on the mounting seat, the position locking and pre-tightening mechanism being used for locking the closing and opening of the rotating shaft and pre-tightening the rotating shaft when closing; and a closing and opening position confirmation device used for confirming the closing and opening position of the connecting shutter and the first contact. The position locking and pre-tightening mechanism can lock the closing and opening position of the rotating shaft, thereby ensuring the safety in use.

Description

Technical Field

[0001] This invention relates to the field of power electronic component manufacturing technology, specifically a pole-mounted disconnector with a switch opening / closing position confirmation function. Background Technology

[0002] Pole-mounted disconnectors are widely used switching devices in power distribution networks, mainly used for isolating power sources, switching operations, and connecting and disconnecting low-current circuits. Existing pole-mounted disconnectors typically include a base, two insulators mounted on the base, a first contact on one of the insulators, and a connecting gate on the other insulator. The connecting gate is rotatably mounted on the insulator via a rotating shaft. The operator drives the shaft to rotate using an insulated handle, causing the connecting gate to swing and achieve contact with the first contact (closing) or disconnection (opening).

[0003] However, existing pole-mounted disconnect switches have the following technical problems during use: During opening and closing operations, the connecting gate typically contacts and separates from the first contact via sliding friction; that is, the moving end of the connecting gate slides relative to the contact surface of the first contact during rotation. After long-term repeated operation, severe mechanical wear occurs on the contact surface between the connecting gate and the first contact, resulting in uneven contact surfaces and increased contact resistance. Increased contact resistance causes overheating at the contact connection, and in severe cases, even contact burnout. This not only affects the current-carrying capacity of the disconnect switch but also shortens the equipment's service life, posing a threat to the safe operation of the power grid. To solve this technical problem, a pole-mounted disconnect switch with an opening / closing position confirmation function is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a pole-mounted disconnector with a closing / opening position confirmation function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pole-mounted disconnector with a closing / opening position confirmation function includes: a base; Two insulators; The first contact installed on one of the insulators; A connecting contact assembly mounted on another insulator includes a mounting base fixedly mounted on the insulator and a rotating shaft made of insulating material rotatably mounted on the mounting base. An insulating handle is mounted on the rotating shaft, and a connecting gate is mounted on the rotating shaft. The connecting gate is flexibly connected to a second contact mounted on the other insulator. A position locking preload mechanism is provided on the mounting base, which is used to lock the rotating shaft during closing and opening, and to preload it during closing; and, The opening / closing position confirmation device is used to confirm the opening / closing position of the connecting gate and the first contact.

[0006] As a further embodiment of the present invention: the position locking pre-tightening mechanism includes a mating disc rotatably sleeved on a rotating shaft and a locking disc fixedly sleeved on the rotating shaft. The mating disc is elastically rotatably sleeved on the rotating shaft by a first torsion spring, and the insulating handle is installed on the mating disc. A locking component is also provided between the mating disc and the locking disc. The locking component is used to release the position locking of the locking disc when the mating disc deflects relative to the rotating shaft.

[0007] As a further embodiment of the present invention: the locking assembly includes a mounting box fixedly mounted on the mounting base and a sliding block disposed inside the mounting box that elastically slides along the axis of rotation. A locking rod is fixedly mounted on the side of the sliding block near the mating plate. The mating plate is provided with at least two positioning grooves on the side near the locking rod. In the initial state, the locking rod is disposed in one of the positioning grooves. A columnar locking rod is disposed on the side wall of the sliding block near the locking plate. The locking plate is provided with a locking groove and a locking block on the side wall of the locking plate near the sliding block. The locking side of the locking block has a pre-tightening structure, and the columnar locking rod is in one of the locking grooves or the locking block.

[0008] As a further embodiment of the present invention: the sliding block is further provided with an elastic element, the two ends of which are fixedly installed on the sliding block and the side wall of the mounting box, respectively, and the elastic element extends axially along the rotating shaft.

[0009] As a further embodiment of the present invention: the connecting gate is fixedly installed on the mounting plate, the mounting plate is rotatably sleeved on the rotating shaft, and the mounting plate is elastically rotatably installed on the rotating shaft by a second torsion spring, the second torsion spring is sleeved on the outside of the rotating shaft, and the two ends of the second torsion spring are respectively fixedly installed on the rotating shaft and the mounting plate.

[0010] As a further embodiment of the present invention: the end of the locking rod is provided with a hemispherical or conical guide surface, and the opening of the positioning groove is provided with a guide chamfer.

[0011] As a further embodiment of the present invention: the pre-tightening structure of the locking block is such that the locking side near the columnar locking rod is a locking slope, and a guide slope is provided on the periphery of the locking block.

[0012] As a further embodiment of the present invention: the opening and closing position confirmation device includes a high-impedance voltage divider connected to the first contact and another high-impedance voltage divider installed on the second contact, both of which are connected to the input terminal of the voltage measurement unit.

[0013] As a further embodiment of the present invention: the voltage measuring unit has an alarm module and a lockout output module. When the opening and closing position determined by the voltage measuring unit does not match the operation command, the alarm module issues an audible and visual alarm, and the lockout output module outputs a lockout signal to lock the operating mechanism.

[0014] As a further aspect of the present invention: the voltage measurement unit includes a microprocessor module, which determines the opening and closing positions based on the amplitude difference and phase difference of the voltage signals output by the two high-impedance voltage dividers; when the amplitude difference is less than a first preset threshold and the phase difference is less than a first preset angle, it is determined that the circuit is closed; when the amplitude difference is greater than a second preset threshold and the phase difference is greater than a second preset angle, it is determined that the circuit is open.

[0015] Compared with the prior art, the beneficial effects of the present invention are: by setting a position locking pre-tightening mechanism, the position of the rotating shaft when closing and opening can be locked to ensure safe use; and when closing, it is pre-tightened so that the connecting gate plate and the first contact are always in contact to ensure that the circuit is always closed. At the same time, the connecting gate plate rotates and contacts the first contact, avoiding the wear phenomenon of the connecting gate plate in the prior art. In addition, by setting an opening and closing position confirmation device, the opening and closing can be automatically identified. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of a pole-mounted disconnector with a closing / opening position confirmation function according to an embodiment of the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 This is a top view schematic diagram of a pole-mounted disconnector with a closing / opening position confirmation function according to an embodiment of the present invention.

[0019] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0020] Figure 5 This is a schematic diagram of the open state structure of a pole-mounted disconnector with an open / close position confirmation function according to an embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the closed state of a pole-mounted disconnector with a closing / opening position confirmation function according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of the connecting contact assembly in a pole-mounted disconnector switch with opening and closing position confirmation function according to an embodiment of the present invention.

[0023] In the diagram: 1. Base; 2. Insulator; 3. First contact; 4. Connecting gate; 5. Mounting base; 6. Rotating shaft; 7. Mating disc; 8. Insulating handle; 9. High-impedance voltage divider; 10. Voltage measuring unit; 11. Mounting box; 12. Sliding block; 13. Locking disc; 14. Second contact; 15. Elastic element; 16. Mounting disc; 71. Positioning groove; 121. Locking rod; 122. Elastic telescopic rod; 131. Locking groove; 132. Locking block; 1321. Guide slope; 1322. Locking slope. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] Please see Figures 1 to 7 The present invention provides a pole-mounted disconnector with a position confirmation function for opening and closing. The pole-mounted disconnector with the position confirmation function for opening and closing includes a base 1, an insulator 2, a first contact 3, a connecting gate 4, a connecting contact assembly, a high-impedance voltage divider 9, and a voltage measurement unit 10.

[0027] Two insulators 2 are fixedly installed on both sides of the upper surface of the base 1, spaced apart along the length of the base 1. The insulators 2 are made of high-strength electrical porcelain or silicone rubber, possessing good insulation performance and mechanical strength, capable of withstanding the system's rated voltage and current. A first contact 3 is fixedly installed on the upper end of one insulator 2, serving as a stationary contact. The first contact 3 is made of copper-tungsten alloy, exhibiting excellent conductivity and resistance to arc erosion. A connecting contact assembly is fixedly installed on the upper end of the other insulator 2. This connecting contact assembly includes a mounting base 5 and a rotating shaft 6 made of insulating material, rotatably mounted on the mounting base 5. The mounting base 5 is made of cast aluminum or cast copper, and the rotating shaft 6 is made of insulating materials such as epoxy fiberglass or polytetrafluoroethylene, ensuring electrical insulation between the rotating shaft 6 and the mounting base 5. An insulating handle 8 is fixedly installed at the upper end of the rotating shaft 6. The insulating handle 8 extends radially along the rotating shaft 6 and is made of insulating materials such as epoxy resin or phenolic resin. The operator can drive the rotating shaft 6 to rotate around its own axis by turning the insulating handle 8, thereby realizing the opening or closing operation. A connecting gate plate 4 is also installed on the rotating shaft 6. The fixed end of the connecting gate plate 4 is fixedly installed on the rotating shaft 6, and the free end of the connecting gate plate 4 swings in the horizontal plane with the rotation of the rotating shaft 6. The connecting gate plate 4 is made of copper or copper alloy material, and its end that contacts the first contact 3 is provided with an arc-shaped contact surface. The arc-shaped contact surface can increase the contact area with the first contact 3, reduce the contact resistance, and reduce heat generation. The connecting gate plate 4 is connected to the second contact 14, which is set on the insulator 2 where the connecting gate plate 4 is located. The connecting gate plate 4 and the second contact 14 are electrically connected through a flexible cable.

[0028] The mounting base 5 is also equipped with a position locking pre-tightening mechanism, which is used to lock the closed and open positions of the rotating shaft 6, and to provide pre-tightening force to the contact between the connecting gate 4 and the first contact 3 when the switch is closed. The position locking pre-tightening mechanism effectively prevents the rotating shaft 6 from rotating accidentally due to external forces such as vibration or wind, ensuring the stability of the disconnector switch's position in both closed and open states, and guaranteeing safe operation.

[0029] Specifically, the position locking pre-tightening mechanism includes a mating disc 7 rotatably sleeved on a rotating shaft 6 and a locking disc 13 fixedly sleeved on the rotating shaft 6. The mating disc 7 is elastically rotatably sleeved on the rotating shaft 6 via a second torsion spring (not shown in the figure). The second torsion spring is sleeved on the outside of the rotating shaft 6, with one end fixedly mounted on the rotating shaft 6 and the other end fixedly mounted on the mating disc 7. The second torsion spring is made of high-quality spring steel wire, possessing a stable elastic coefficient and a long fatigue life. When the mating disc 7 rotates relative to the rotating shaft 6, the first torsion spring undergoes elastic torsion and stores elastic potential energy. When the driving force of the mating disc 7 disappears, the second torsion spring releases its elastic potential energy to drive the rotating shaft 6 to rotate. An insulating handle 8 is fixedly mounted on the mating disc 7, and the operator drives the mating disc 7 to rotate relative to the rotating shaft 6 by operating the insulating handle 8. The locking disc 13 is located below the mating disc 7, fixedly connected to the rotating shaft 6, and rotates synchronously with the rotating shaft 6. The locking disc 13 is made of high-quality carbon structural steel or alloy steel and is coaxially arranged with the mating disc 7.

[0030] In some embodiments, a locking component is further provided between the mating disc 7 and the locking disc 13. The locking component is used to release the position lock of the locking disc 13 when the mating disc 7 deflects relative to the rotating shaft 6. The specific working principle of the locking component is as follows: when the mating disc 7 deflects relative to the rotating shaft 6, a relative rotation occurs between the mating disc 7 and the locking disc 13, breaking the original locked engagement relationship in the locking component, thereby allowing the locking disc 13 and the rotating shaft 6 to rotate; when the mating disc 7 rotates to its position, the locking component re-enters the locked state, locking the rotating shaft 6 in the target position.

[0031] like Figure 2 and Figure 4 As shown, the locking assembly includes a mounting box 11 fixedly mounted on the mounting base 5. The mounting box 11 is made of aluminum alloy or engineering plastic material, and its interior is hollow, forming a sliding cavity. Inside the mounting box 11, there is a sliding block 12 that can elastically slide along the axis of the rotating shaft 6. The sliding block 12 is made of wear-resistant metal material or engineering plastic material, and its outer wall is clearance-fitted with the inner wall of the sliding cavity of the mounting box 11 to ensure that the sliding block 12 can reciprocate along the axis of the rotating shaft 6.

[0032] In some embodiments, a locking rod 121 is fixedly installed on the side of the sliding block 12 near the mating disc 7. The locking rod 121 extends radially along the rotating shaft 6, and its end is provided with a hemispherical or conical guide surface to facilitate the smooth sliding of the locking rod 121 out of and into the positioning groove 71 when the mating disc 7 rotates. At least two positioning grooves 71 are provided on the side of the mating disc 7 near the locking rod 121. Initially, the locking rod 121 is inserted into one of the positioning grooves 71. The cross-sectional shape of the positioning groove 71 is circular or elliptical, and a guide chamfer is provided at the opening of the positioning groove 71 to facilitate the insertion and removal of the locking rod 121. The bottom of the positioning groove 71 is flat. After the locking rod 121 is inserted into the positioning groove 71, the end of the locking rod 121 contacts the bottom of the positioning groove 71, realizing the linkage between the mating disc 7 and the sliding block 12.

[0033] like Figure 4 As shown, in some embodiments, an elastic telescopic rod 122 is provided on the side wall of the sliding block 12 near the locking disc 13. One end of the elastic telescopic rod 122 is fixedly installed on the sliding block 12, and the other end of the elastic telescopic rod 122 is a free end that extends toward the locking disc 13. A locking groove 131 and a locking block 132 are provided on the side wall of the locking disc 13 near the elastic telescopic rod 122. The locking side of the locking block 132 has a pre-tightening structure, and the side of the locking block 132 near the elastic telescopic rod 122 is an inclined surface. The elastic telescopic rod 122 is optionally disposed in either the locking groove 131 or the locking block 132. When the elastic telescopic rod 122 is engaged in the locking groove 131, the position of the sliding block 12 is locked, and the locking disc 13 cannot rotate, thereby achieving the position locking of the rotating shaft 6; when the elastic telescopic rod 122 abuts against the locking slope 1322 of the locking block 132, if a gap occurs at the contact position between the connecting gate 4 and the first contact 3, under the elastic action of the elastic telescopic rod 122 and the guidance of the locking slope 1322, the elastic telescopic rod 122 continues to extend, causing the rotating shaft 6 to deflect, so that the connecting gate 4 and the first contact 3 are kept in a precise contact state.

[0034] More specifically, such as Figure 3 As shown, the initial state is the open state. At this time, the movable end of the connecting gate plate 4 is away from the first contact 3, the locking rod 121 is inserted into one of the positioning grooves 71 of the mating plate 7, the elastic telescopic rod 122 is inserted into the locking groove 131 of the locking plate 13, the position of the rotating shaft 6 and the locking plate 13 is locked, and the connecting gate plate 4 is kept in the open position.

[0035] like Figure 5 , Figure 6 and Figure 7As shown, when a closing operation is required, the operator drives the mating disc 7 to rotate by turning the insulated handle 8. Since the elastic telescopic rod 122 is engaged in the locking groove 131, the locking disc 13 and the rotating shaft 6 are locked, causing the mating disc 7 to deflect relative to the rotating shaft 6. During this process, the first torsion spring between the mating disc 7 and the rotating shaft 6 undergoes elastic torsion and stores energy. The rotation of the mating disc 7 causes the locking rod 121 to slide out of the positioning groove 71. Under the pressure of the side wall of the positioning groove 71, the locking rod 121 drives the sliding block 12 to slide along the axial direction of the rotating shaft 6 away from the locking disc 13, causing the elastic telescopic rod 122 to disengage from the locking groove 131 and releasing the locking of the positions of the locking disc 13 and the rotating shaft 6. At this time, the first torsion spring releases its stored energy, driving the rotating shaft 6 to quickly follow the rotation of the mating disc 7, causing the connecting gate plate 4 to swing rapidly towards the first contact 3, achieving rapid closing. Because the rotating shaft 6 rotates rapidly under the drive of the first torsion spring, the contact time between the connecting gate 4 and the first contact 3 is extremely short, which effectively reduces the occurrence of arcing and extends the service life of the contact.

[0036] When the connecting gate 4 abuts against the first contact 3, the connecting gate 4 prevents the locking disc 13 and the rotating shaft 6 from continuing to rotate with the mating disc 7. At this time, the locking rod 121 abuts against the adjacent positioning groove 71, and the elastic telescopic rod 122 slides over the guide slope 1321 on the periphery of the locking block 132, so that the elastic telescopic rod 122 abuts against the locking slope 1322 of the locking block 132, and then the mating disc 7 is released, completing the closing. Since the locking side wall of the locking block 132 is an inclined surface, the elastic telescopic rod 122 generates a certain preload when it cooperates with the inclined surface, so that the connecting gate 4 exerts a certain compressive force on the first contact 3, ensuring the contact area between the connecting gate 4 and the first contact 3 and reducing the contact resistance. When the connecting gate 4 deforms to a certain extent, the cooperation between the elastic telescopic rod 122 and the inclined surface of the locking block 132 can continuously replenish the pressure, ensuring the reliability of long-term closing.

[0037] When a tripping operation is required, the operator drives the mating disc 7 to rotate in the opposite direction by turning the insulating handle 8. At this time, the locking rod 121 is inserted into a positioning groove 71 of the mating disc 7, driving the mating disc 7 to rotate, causing the locking rod 121 to slide in the adjacent positioning groove 71. At this time, the mating disc 7 deflects relative to the rotating shaft 6. When the locking rod 121 abuts against the sloping side wall of the positioning groove 71, the locking rod 121 drives the sliding block 12 away from the side wall of the locking disc 13, and the elastic telescopic rod 122 disengages from the locking block 132, releasing the position lock on the locking disc 13 and the rotating shaft 6. Under the elastic action, the rotating shaft 6 drives the connecting gate plate 4 to rotate rapidly, and the connecting gate plate 4 quickly separates from the first contact 3, reducing arcing. When the rotating shaft 6, mating disc 7 and locking disc 13 rotate to the preset opening position, the locking rod 121 slides into the adjacent positioning groove 71 of the mating disc 7, and the sliding block 12 moves toward the locking disc 13 under the action of the elastic element 15, so that the elastic telescopic rod 122 is inserted into the locking groove 131 to lock the opening position of the connecting gate plate 4.

[0038] With the aforementioned position locking pre-tightening mechanism, the present invention can reliably lock in both the closed and open positions, and can provide continuous pre-tightening force when the circuit is closed, ensuring reliable contact between the connecting gate 4 and the first contact 3. This solves the technical problem of poor contact caused by vibration or contact wear in the prior art and reduces arcing.

[0039] In some embodiments, the sliding block 12 is further provided with an elastic element 15. The two ends of the elastic element 15 are respectively fixedly installed on the side walls of the sliding block 12 and the mounting box 11, and the elastic element 15 extends axially along the rotating shaft 6. The elastic element 15 is preferably a compression spring, made of high-quality spring steel wire. In its free state, the compression spring has a certain pre-compression amount, so that the sliding block 12 always tends to move towards the locking disc 13. When the sliding block 12 is driven away from the locking disc 13 by the locking rod 121, the compression spring is further compressed, storing elastic potential energy. When the locking rod 121 disengages from the limiting position of the positioning groove 71, the compression spring releases its elastic potential energy, driving the sliding block 12 to reset towards the locking disc 13. Through the provision of the elastic element 15, the sliding block 12 is elastically slidably installed in the mounting box 11, ensuring the automatic reset function of the locking assembly.

[0040] In some embodiments, the connecting gate 4 is fixedly mounted on the mounting plate 16, which is rotatably sleeved on the rotating shaft 6. The mounting plate 16 is also elastically mounted on the rotating shaft 6 via a second torsion spring (not shown). The second torsion spring is sleeved on the outside of the rotating shaft 6, with one end fixedly mounted on the rotating shaft 6 and the other end fixedly mounted on the mounting plate 16. Through the second torsion spring, when the connecting gate 4 contacts the first contact 3, the second torsion spring undergoes elastic deformation, providing a continuous elastic resistance force to the connecting gate 4 and ensuring reliable contact between the connecting gate 4 and the first contact 3. Even if the connecting gate 4 experiences slight wear after long-term use, the second torsion spring can automatically compensate for the wear through elastic deformation, ensuring constant contact pressure.

[0041] In some embodiments, the present invention further includes a circuit breaker position confirmation device, which is used to confirm the circuit breaker position of the connecting gate 4 and the first contact 3. The circuit breaker position confirmation device includes a high-impedance voltage divider 9 connected to the first contact 3 and another high-impedance voltage divider 9 connected to the second contact 14. Both high-impedance voltage dividers 9 are connected to the input terminal of the voltage measuring unit 10 via shielded cables. The high-impedance voltage divider 9 adopts a high-precision resistive voltage divider structure, which has the advantages of high input impedance (typically greater than 10MΩ) and minimal impact on the circuit under test, and can accurately reflect the voltage state on both sides of the contact. The high-impedance voltage divider 9 is potted using a special process and dry-sealed, possessing good insulation and weather resistance, and is suitable for outdoor pole-mounted installation environments.

[0042] In some embodiments, the voltage measurement unit 10 includes a signal conditioning module, an analog-to-digital conversion module, a microprocessor module, a comparison and judgment module, and an alarm module. The voltage measurement unit 10 is used to acquire the voltage amplitude and phase of the first contact 3 and the second contact 14 in real time. When the connecting gate 4 is in the closed position, the first contact 3 and the second contact 14 are electrically connected through the connecting gate 4, with the voltage difference between the two sides approaching zero and the phase difference approaching 0°. When the connecting gate 4 is fully open, the first contact 3 and the second contact 14 are electrically isolated, with the voltage difference between the two sides being the system phase voltage and the phase difference being 120°. The voltage measurement unit 10 automatically determines the switch position based on the voltage difference and phase difference. When the determination result does not match the operation command, the alarm module of the voltage measurement unit 10 issues an audible and visual alarm and locks the operating mechanism to prevent misoperation.

[0043] By setting up a switch opening / closing position confirmation device, automatic identification and confirmation of the switch opening / closing position are achieved, avoiding the risk of inaccurate manual observation and improving the safety and reliability of operation. When the operator remotely issues a closing or opening command, the voltage measurement unit 10 can automatically detect whether the switch is actually in the target position. If the detection result does not match the command, an alarm is issued and the operating mechanism is locked to prevent safety accidents caused by misoperation.

[0044] The working principle is as follows: Initial state: The free end of the connecting gate 4 is away from the first contact 3, the locking rod 121 is inserted into one of the positioning grooves 71 of the mating plate 7, and the elastic telescopic rod 122 is engaged in the locking groove 131 of the locking plate 13. The positions of the rotating shaft 6 and the locking plate 13 are locked. At this time, the voltage measuring unit 10 detects that the voltage difference between the first contact 3 side and the second contact 14 side is the system phase voltage, with a phase difference of 120°, and determines that the switch is in the open position.

[0045] Closing Operation: The operator pulls the insulated handle 8 to drive the mating disc 7 to rotate clockwise. Because the elastic telescopic rod 122 engages in the locking groove 131, the locking disc 13 and the rotating shaft 6 are locked. The mating disc 7 deflects relative to the rotating shaft 6, and the first torsion spring stores energy. The locking rod 121 slides out of the positioning groove 71, driving the sliding block 12 away from the locking disc 13. The elastic telescopic rod 122 disengages from the locking groove 131, releasing the lock on the locking disc 13. The first torsion spring releases its stored energy, driving the rotating shaft 6 to rotate rapidly, and the connecting gate plate 4 swings rapidly toward the first contact 3. When the connecting gate plate 4 contacts the first contact 3, it prevents the locking disc 13 and the rotating shaft 6 from continuing to rotate with the mating disc 7. At this time, the locking rod 121 is located in the adjacent positioning groove 71, and the elastic telescopic rod 122 is located on the locking side of the locking block 132, unable to engage with the locking block 132. At this time, the insulating handle 8 drives the mating disc 7 to continue rotating. The elastic telescopic rod 122, after sliding past the guide slope 1321 of the locking block 132, abuts against the side wall of the locking slope 1322 of the locking block 132, achieving closed locking. At this time, the voltage measuring unit 10 detects that the voltage difference between the first contact 3 side and the second contact 14 side is close to zero and the phase difference is close to 0°, determining that the switch is in the closed position, consistent with the operation command, and no alarm is issued.

[0046] Opening operation: The operator turns the insulating handle 8 to drive the mating disc 7 to rotate counterclockwise. The locking rod 121, under the action of the sloping sidewall of the positioning groove 71, drives the sliding block 12 away from the locking disc 13, and the elastic telescopic rod 122 disengages from the locking block 132, releasing the lock. The rotating shaft 6 follows the rotation of the mating disc 7, separating the connecting gate plate 4 from the first contact 3. When rotated to the preset opening position, the locking rod 121 slides into the adjacent positioning groove 71, and the elastic telescopic rod 122 engages in the locking groove 131, achieving opening lock. At this time, the voltage measuring unit 10 detects a voltage difference equal to the system phase voltage and a phase difference of 120°, determining that the switch is in the open position.

[0047] This invention, by setting a position locking pre-tightening mechanism, can reliably lock the closed and open positions of the rotating shaft 6, ensuring safe operation. During closing, the cooperation between the elastic telescopic rod 122 and the inclined surface of the locking block 132 generates a pre-tightening force, ensuring reliable contact between the connecting gate plate 4 and the first contact 3, guaranteeing long-term closing stability. Simultaneously, the connecting gate plate 4 contacts the first contact 3 through rotation, avoiding wear caused by sliding friction of the gate plate in existing technologies, thus extending the equipment's service life. The connecting gate plate 4 and the first contact 3 can quickly separate and quickly contact, reducing arcing and ensuring service life. By setting an opening / closing position confirmation device, automatic identification and confirmation of the opening / closing position are achieved, avoiding the risk of inaccurate manual observation and improving operational safety and reliability.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pole-mounted disconnector with a position confirmation function for opening and closing, characterized in that, include: Base (1); Two insulators (2); The first contact (3) is installed on one of the insulators (2); The contact assembly is mounted on another insulator (2), the contact assembly including a mounting base (5) fixedly mounted on the insulator (2) and a rotating shaft (6) made of insulating material rotatably mounted on the mounting base (5), an insulating handle (8) is mounted on the rotating shaft (6), a connecting gate (4) is mounted on the rotating shaft (6), and the connecting gate (4) is flexibly connected to a second contact (14) mounted on the other insulator (2); The position locking pre-tightening mechanism is provided on the mounting base (5) for locking the rotating shaft (6) during closing and opening, and for pre-tightening it during closing; In addition, there is a circuit breaker position confirmation device, which is used to confirm the circuit breaker position of the connecting gate (4) and the first contact (3).

2. A pole-mounted disconnector with opening / closing position confirmation function according to claim 1, characterized in that, The position locking pre-tightening mechanism includes a mating disc (7) rotatably sleeved on the rotating shaft (6) and a locking disc (13) fixedly sleeved on the rotating shaft (6). The mating disc (7) is elastically rotatably sleeved on the rotating shaft (6) by a first torsion spring. The insulating handle (8) is installed on the mating disc (7). A locking component is also provided between the mating disc (7) and the locking disc (13). The locking component is used to release the position locking of the locking disc (13) when the mating disc (7) deflects relative to the rotating shaft (6).

3. A pole-mounted disconnector with opening / closing position confirmation function according to claim 2, characterized in that, The locking assembly includes a mounting box (11) fixedly mounted on the mounting base (5) and a sliding block (12) disposed inside the mounting box (11) and elastically sliding along the axis of the rotating shaft (6). A locking rod (121) is fixedly mounted on the side of the sliding block (12) near the mating plate (7). At least two positioning grooves (71) are provided on the side of the mating plate (7) near the locking rod (121). In the initial state, the locking rod (121) is disposed in one of the positioning grooves (71). An elastic telescopic rod (122) is provided on the side wall of the sliding block (12) near the locking plate (13). A locking groove (131) and a locking block (132) are provided on the side wall of the locking plate (13) near the sliding block (12). The locking side of the locking block (132) has a pre-tightening structure. The elastic telescopic rod (122) is in one of the locking grooves (131) or the locking block (132).

4. A pole-mounted disconnector with opening / closing position confirmation function according to claim 3, characterized in that, The sliding block (12) is also provided with an elastic element (15), the two ends of which are fixedly installed on the side wall of the sliding block (12) and the mounting box (11), respectively, and the elastic element (15) extends axially along the rotating shaft (6).

5. A pole-mounted disconnector with opening / closing position confirmation function according to claim 3, characterized in that, The connecting gate (4) is fixedly installed on the mounting plate (16). The mounting plate is rotatably sleeved on the rotating shaft (6). The mounting plate (16) is elastically rotatably installed on the rotating shaft (6) through the second torsion spring. The second torsion spring is sleeved on the outside of the rotating shaft (6), and the two ends of the second torsion spring are respectively fixedly installed on the rotating shaft (6) and the mounting plate (16).

6. A pole-mounted disconnector with opening / closing position confirmation function according to claim 3, characterized in that, The end of the locking rod (121) is provided with a hemispherical or conical guide surface, and the orifice of the positioning groove (71) is provided with a guide chamfer.

7. A pole-mounted disconnector with opening / closing position confirmation function according to claim 3, characterized in that, The pre-tightening structure of the locking block (132) is that the locking side near the columnar locking rod (122) is a locking slope (1322), and a guide slope (1321) is provided on the periphery of the locking block (132).

8. A pole-mounted disconnector with opening / closing position confirmation function according to claim 1, characterized in that, The opening and closing position confirmation device includes a high-impedance voltage divider (9) connected to the first contact (3) and another high-impedance voltage divider (9) installed on the second contact (14). Both high-impedance voltage dividers (9) are connected to the input terminal of the voltage measurement unit (10).

9. A pole-mounted disconnector with opening / closing position confirmation function according to claim 8, characterized in that, The voltage measuring unit (10) has an alarm module and a lockout output module. When the opening and closing position determined by the voltage measuring unit (10) does not match the operation command, the alarm module issues an audible and visual alarm, and the lockout output module outputs a lockout signal to lock the operating mechanism.

10. A pole-mounted disconnector with opening / closing position confirmation function according to claim 9, characterized in that, The voltage measurement unit (10) includes a microprocessor module, which determines the opening and closing position based on the amplitude difference and phase difference of the voltage signals output by the two high-impedance voltage dividers (9). When the amplitude difference is less than the first preset threshold and the phase difference is less than the first preset angle, it is determined that the circuit breaker is in place. When the amplitude difference is greater than the second preset threshold and the phase difference is greater than the second preset angle, it is determined that the circuit breaker is in place.

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