Deicing type isolating switch

Abstract

The utility model relates to a deicing isolating switch, which belongs to the technical field of isolating switches and comprises a closed box, a high-voltage end guide block and a low-voltage end guide block are fixed in the closed box and extend out of the closed box, a contact hole is arranged on the high-voltage end guide block, an execution rod is clamped in the contact hole in a sliding manner, and the low-voltage end guide block extends out of the closed box. An execution assembly is arranged on one side of the closed box and comprises an execution shell fixed to one side of the closed box, an execution sleeve is rotationally clamped to the side wall of the closed box, and external threads are arranged on the outer wall of an execution rod. The driving motor drives the circular ring gear, the circular ring gear is located on the outer sides of the three intermediate gears, then the intermediate gears are synchronously driven to rotate, the rotation action of the execution sleeve is stable and steady, and when power connection is separated, the arc extinguishing device starts the electric telescopic rod to enable the isolation disc to drive internal airflow to flow, and then electric arcs are blown out.

Description

Technical Field

[0001] This utility model relates to the field of disconnector technology, and in particular to a de-icing disconnector. Background Technology

[0002] Disconnect switches are frequently used in the inspection and maintenance of power systems. In cold regions and severe winter conditions, outdoor equipment is prone to icing, especially cables installed outdoors. The accumulation of ice can increase the overall weight of the cables and even cause them to break. Therefore, it is necessary to add heating and de-icing devices to the transmission cables and control the switching of the lines through disconnect switches. Since the disconnect switches themselves are also in a cold environment, they may need to be specially designed.

[0003] For example, Chinese invention patent application CN202211471898.1 discloses a closed-type de-icing disconnect switch. The low-voltage side housing is fixedly installed at one end of the fully sealed housing and is connected to the fully sealed housing. A stationary conductive assembly electrically connected to the low-voltage side conductive rod is fixedly installed inside the low-voltage side housing. A moving conductive assembly is fixedly installed inside the fully sealed housing and is electrically connected to the high-voltage side conductive rod. There is a gap between the moving conductive assembly and the stationary conductive assembly. An electric mechanism drives the moving contact to reciprocate towards the position of the stationary conductive assembly through a transmission mechanism to perform opening and closing actions.

[0004] The aforementioned enclosed de-icing isolating switch has a closed, built-in transmission mechanism that is completely unaffected by external ice layers. It can quickly, efficiently, and safely de-ice iced lines, solving the problem that traditional de-icing switches cannot self-de-ice after icing, completely eliminating the lag in operation before line de-icing, and improving the reliability of de-icing.

[0005] However, the transmission mechanism in the above documents is complex, and all exposed components are at risk of being blocked. In particular, in extremely cold environments, if ice forms in the structural gaps, the components will become inoperable. Therefore, this utility model is proposed. Utility Model Content

[0006] To overcome the technical defects of the existing technology, this utility model provides a de-icing disconnect switch, which can reduce the number of exposed moving parts and operate reliably and stably. When realizing the switching function, the drive motor drives the ring gear, which is located outside the three intermediate gears, and thus can synchronously drive the intermediate gears to rotate, making the rotation of the actuator sleeve stable and smooth.

[0007] The technical solution adopted by this utility model is as follows: It includes a sealed box, inside which a high-voltage end conductor block and a low-voltage end conductor block are fixed. Both the high-voltage and low-voltage end conductor blocks have extensions extending outside the sealed box. The high-voltage and low-voltage end conductor blocks also require insulation treatment to ensure conductivity only within the sealed box. The high-voltage end conductor block has a contact hole, in which an actuator rod is slidably engaged. The actuator rod contacts the high-voltage end conductor block to achieve power transmission. An actuator assembly is provided on one side of the sealed box. The actuator assembly includes components fixed to the sealed box... The actuator housing is located on one side of the closed enclosure. An actuator sleeve is rotatably engaged on the side wall of the closed enclosure. When the actuator sleeve rotates, it can drive the actuator rod to move. Except for the contact parts between the actuator rod and the high-voltage end guide block and the low-voltage end guide block, all other parts of the actuator rod need to be insulated to prevent current leakage. The outer wall of the actuator rod is provided with external threads, and the inner wall of the actuator sleeve is provided with internal threads to engage with the actuator rod. One end of the actuator rod passes through the actuator sleeve and extends into the actuator housing. A drive mechanism is provided inside the actuator housing. An arc-extinguishing device is fixed at the bottom of the closed enclosure.

[0008] Preferably, in order to facilitate the connection of current, the low-voltage end guide block is provided with a stationary contact block, and one end of the actuator is fixed with a movable contact block.

[0009] Preferably, in order to facilitate power transmission, the drive mechanism includes an intermediate gear fixed on the side wall of the enclosed box, and the outer wall of the actuator sleeve is provided with external teeth corresponding to the intermediate gear, and the intermediate gear and the external teeth are engaged in power meshing.

[0010] Preferably, in order to ensure that the force on the actuator sleeve is uniform, there are three intermediate gears, which are evenly distributed outside the actuator sleeve. A ring gear is provided outside the intermediate gears, and internal teeth are provided on the inner wall of the ring gear. The intermediate gears and the internal teeth are in dynamic meshing.

[0011] Preferably, in order to facilitate synchronous driving of the intermediate gear, an outer peripheral plate is fixed to one side of the ring gear, a drive disk is fixed to one side of the outer peripheral plate, a drive motor is fixed to the actuator housing, and the output shaft of the drive motor is fixed to the drive disk.

[0012] Preferably, to prevent the actuator from rotating, a connecting column is fixed to one side of the enclosed box, a limiting plate is fixed to one end of the connecting column, a limiting rod is fixed to the limiting plate, a limiting groove is formed at one end of the actuator, and one end of the limiting rod extends into the limiting groove.

[0013] Preferably, in order to facilitate the reuse of the arc-extinguishing gas flow and improve the sealing performance, the arc-extinguishing device includes a receiving cylinder fixed to the bottom of the sealed box, an isolation plate slidably engaged inside the receiving cylinder, an electric telescopic rod fixed to one side of the isolation plate, one end of the electric telescopic rod extending outside the receiving cylinder and installed at the bottom of the execution housing by an assembly block, and an outlet pipe and a return pipe fixedly connected to both ends of the receiving cylinder, respectively, and the receiving cylinder is filled with sulfur hexafluoride gas.

[0014] Preferably, in order to improve the arc extinguishing effect, arc extinguishing pipes are provided on both sides of the enclosed box. The arc extinguishing pipes are connected to the ejector pipe and the return pipe respectively, and the positions of the arc extinguishing pipes are staggered and located on both sides of the actuator.

[0015] The beneficial effects of this utility model are: this disconnecting switch can reduce the number of exposed moving parts, and its operation is reliable and stable. When the switching function is realized, the drive motor drives the ring gear, which is located outside the three intermediate gears, and thus can synchronously drive the intermediate gears to rotate, so that the rotation of the actuator sleeve is stable and smooth. When the power connection is disconnected, the arc extinguishing device can activate the electric telescopic rod to drive the internal airflow of the isolation plate, thereby blowing out the electric arc. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the drive mechanism structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the limiting disc structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the limiting rod structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the arc-extinguishing device of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Enclosed box; 101. High-voltage end guide block; 102. Low-voltage end guide block; 103. Stationary contact block; 2. Actuating rod; 201. Movable contact block; 3. Actuating assembly; 301. Actuating housing; 302. Actuating sleeve; 303. Connecting column; 304. Limiting plate; 305. Limiting rod; 4. Drive mechanism; 401. Intermediate gear; 402. Ring gear; 403. Outer peripheral plate; 404. Drive disc; 405. Drive motor; 5. Arc extinguishing device; 501. Receiving cylinder; 502. Isolation disc; 503. Electric telescopic rod; 504. Ejector pipe; 505. Return pipe; 506. Arc extinguishing pipe. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figures 1-5 As shown, this embodiment provides a de-icing disconnect switch, including a sealed box 1. A high-voltage end conductor 101 and a low-voltage end conductor 102 are fixed inside the sealed box 1. Both the high-voltage end conductor 101 and the low-voltage end conductor 102 extend outside the sealed box 1. The high-voltage end conductor 101 and the low-voltage end conductor 102 require insulation treatment to ensure conductivity only within the sealed box 1. The high-voltage end conductor 101 has a contact hole, and an actuator 2 is slidably engaged within the contact hole. The actuator 2 contacts the high-voltage end conductor 101 to achieve power transmission. An actuator assembly 3 is provided on one side of the sealed box 1. The actuator assembly 3 includes components fixed to the sealed box. The execution housing 301 on one side of the enclosure 1 has an execution sleeve 302 rotatably engaged on the side wall of the enclosure 1. When the execution sleeve 302 rotates, it can drive the execution rod 2 to move. Except for the contact parts between the execution rod 2 and the high-voltage end guide block 101 and the low-voltage end guide block 102, all other parts of the execution rod 2 need to be insulated to prevent current leakage. The outer wall of the execution rod 2 is provided with external threads, and the inner wall of the execution sleeve 302 is provided with internal threads to engage with the execution rod 2. One end of the execution rod 2 passes through the execution sleeve 302 and extends into the execution housing 301. The execution housing 301 is provided with a drive mechanism 4, and the bottom of the enclosure 1 is fixed with an arc extinguishing device 5.

[0024] The low-voltage end guide block 102 is provided with a stationary contact block 103, and one end of the actuator 2 is fixed with a movable contact block 201, which facilitates the connection of current.

[0025] The drive mechanism 4 includes an intermediate gear 401 fixed on the side wall of the enclosed box 1. The outer wall of the actuator sleeve 302 is provided with external teeth corresponding to the intermediate gear 401. The intermediate gear 401 and the external teeth mesh with each other, which facilitates the transmission of power.

[0026] There are three intermediate gears 401, which are evenly distributed outside the actuator sleeve 302. A ring gear 402 is provided outside the intermediate gears 401. The inner wall of the ring gear 402 is provided with internal teeth. The intermediate gears 401 and the internal teeth are engaged in dynamic meshing, which can make the actuator sleeve 302 be subjected to uniform force.

[0027] An outer peripheral plate 403 is fixed to one side of the ring gear 402, and a drive disk 404 is fixed to one side of the outer peripheral plate 403. A drive motor 405 is fixed on the actuator housing 301. The output shaft of the drive motor 405 is fixed to the drive disk 404, which facilitates synchronous driving of the intermediate gear 401.

[0028] A connecting column 303 is fixed on one side of the enclosed box 1. A limiting plate 304 is fixed to one end of the connecting column 303. A limiting rod 305 is fixed on the limiting plate 304. A limiting groove is opened at one end of the actuator 2. One end of the limiting rod 305 extends into the limiting groove, which can prevent the actuator 2 from rotating.

[0029] The arc extinguishing device 5 includes a receiving cylinder 501 fixed to the bottom of the enclosed box 1. An isolation plate 502 is slidably engaged inside the receiving cylinder 501. An electric telescopic rod 503 is fixed to one side of the isolation plate 502. One end of the electric telescopic rod 503 extends outside the receiving cylinder 501 and is installed at the bottom of the execution housing 301 by an assembly block. The two ends of the receiving cylinder 501 are respectively fixedly connected to an outlet pipe 504 and a return pipe 505. The receiving cylinder 501 is filled with sulfur hexafluoride gas, which facilitates the reuse of the arc extinguishing gas flow and improves the sealing performance.

[0030] Both sides of the enclosed box 1 are equipped with arc extinguishing pipes 506, which are connected to the ejector pipe 504 and the return pipe 505 respectively. The arc extinguishing pipes 506 are staggered and located on both sides of the actuator 2, which can improve the arc extinguishing effect.

[0031] This disconnecting switch reduces the number of exposed moving parts and operates reliably and stably. When performing the switching function, the drive motor 405 drives the ring gear 402, which is located outside the three intermediate gears 401. This allows the intermediate gears 401 to rotate synchronously, making the rotation of the actuator sleeve 302 stable and smooth. When disconnecting the power connection, the arc extinguishing device 5 can activate the electric telescopic rod 503 to cause the isolation disc 502 to flow internal airflow, thereby extinguishing the arc.

[0032] When in use, the actuator 2 moves to contact the low-voltage end guide block 102 to achieve power conduction. When separating, the electric telescopic rod 503 is activated to drive the isolation plate 502 to move, which allows the airflow to be blown into the closed box 1 through the arc extinguishing tube 506. Then the electric telescopic rod 503 moves back and forth to achieve repeated arc extinguishing, and the airflow can be cooled in the receiving cylinder 501.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A de-icing disconnect switch, comprising a sealed housing (1), wherein a high-voltage end conductor (101) and a low-voltage end conductor (102) are fixed inside the sealed housing (1), and both the high-voltage end conductor (101) and the low-voltage end conductor (102) are provided with extensions extending outside the sealed housing (1), characterized in that: The high-voltage end guide block (101) is provided with a contact hole, and an actuator (2) is slidably engaged in the contact hole. An actuator assembly (3) is provided on one side of the enclosed box (1). The actuator assembly (3) includes an actuator housing (301) fixed on one side of the enclosed box (1). An actuator sleeve (302) is rotatably engaged on the side wall of the enclosed box (1). An external thread is provided on the outer wall of the actuator (2). An internal thread is provided on the inner wall of the actuator sleeve (302) to engage with the actuator (2). One end of the actuator (2) passes through the actuator sleeve (302) and extends into the actuator housing (301). A drive mechanism (4) is provided inside the actuator housing (301). An arc extinguishing device (5) is fixed at the bottom of the enclosed box (1).

2. The de-icing disconnect switch according to claim 1, characterized in that: The low-pressure end guide block (102) is provided with a stationary contact block (103), and one end of the actuator (2) is fixed with a movable contact block (201).

3. The de-icing disconnect switch according to claim 1, characterized in that: The drive mechanism (4) includes an intermediate gear (401) fixed on the side wall of the enclosed box (1). The outer wall of the actuator sleeve (302) is provided with external teeth corresponding to the intermediate gear (401). The intermediate gear (401) and the external teeth are in dynamic meshing.

4. The de-icing disconnect switch according to claim 3, characterized in that: The intermediate gear (401) is provided in three parts and is evenly distributed outside the actuator sleeve (302). A ring gear (402) is provided outside the intermediate gear (401). The inner wall of the ring gear (402) is provided with internal teeth. The intermediate gear (401) and the internal teeth are engaged in dynamic meshing.

5. The de-icing disconnect switch according to claim 4, characterized in that: An outer peripheral plate (403) is fixed to one side of the ring gear (402), and a drive disk (404) is fixed to one side of the outer peripheral plate (403). A drive motor (405) is fixed on the execution housing (301), and the output shaft of the drive motor (405) is fixed to the drive disk (404).

6. The de-icing disconnect switch according to claim 5, characterized in that: A connecting column (303) is fixed on one side of the enclosed box (1). A limiting plate (304) is fixed at one end of the connecting column (303). A limiting rod (305) is fixed on the limiting plate (304). A limiting groove is opened at one end of the actuator (2). One end of the limiting rod (305) extends into the limiting groove.

7. The de-icing disconnect switch according to claim 1, characterized in that: The arc extinguishing device (5) includes a receiving cylinder (501) fixed to the bottom of the closed box (1). An isolation plate (502) is slidably engaged inside the receiving cylinder (501). An electric telescopic rod (503) is fixed to one side of the isolation plate (502). One end of the electric telescopic rod (503) extends to the outside of the receiving cylinder (501) and is installed at the bottom of the execution housing (301) by an assembly block. The two ends of the receiving cylinder (501) are respectively fixedly connected to an ejector pipe (504) and a return pipe (505).

8. The de-icing disconnect switch according to claim 7, characterized in that: Both sides of the sealed box (1) are provided with arc extinguishing pipes (506), which are connected to the ejector pipe (504) and the return pipe (505) respectively.

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