Small outdoor vacuum three-phase recloser

Abstract

The utility model discloses a small outdoor vacuum three-phase recloser, belongs to the technical field of vacuum three-phase reclosers, and solves the problem that the vacuum three-phase recloser cannot perform normal on-off action when the magnetism of a permanent magnetic mechanism is gradually weakened due to high temperature and a spring mechanism loses elasticity due to aging. Comprising a shell and a vacuum arc-extinguishing chamber fixedly connected to the top surface of the shell and communicated with the shell. The guide piece and the sliding rod are controlled through the driving motor, height adjustment of the hinge piece and the movable guide rod is achieved, when the sliding rod moves, the sliding rod and the anti-collision spring are controlled through the adjusting end block and the buffer block to relieve impact, and the screw moves to drive the threaded sleeve to rotate through the thread lead angle design of the screw and the threaded sleeve. And meanwhile, the displacement of the sliding rod drives the V-shaped plate and the adjusting shaft, the driving sheet is pulled through the adjusting spring, and the counter is driven to record the on-off frequency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum three -phase recloser technical field especially relates to a small -size outdoor vacuum three -phase recloser. BACKGROUND

[0002] Vacuum three -phase recloser is a kind of intelligent switchgear for automation in power system, has the ability of detecting fault current, disconnecting fault current and setting times of reclosing operation.It can automatically complete these operations within a given time, without external power supply or communication.When short-circuit fault occurs, vacuum three -phase recloser will disconnect and reclose operation according to the preset time and order.If the fault is transient, recloser will stop operation after successful reclosing, and restore to initial state after a certain delay;If the fault is permanent, recloser will be locked in the open state after completing the predetermined operation, isolating the fault area.

[0003] Vacuum three -phase recloser mainly uses permanent magnet mechanism or spring mechanism as its operating power source to disconnect three -phase circuit.Permanent magnet mechanism uses the magnetic field generated by permanent magnet to drive the contact of switch to operate, while spring mechanism drives the contact to act by spring energy storage and release.These mechanisms have the ability of fast opening and closing, can complete the operation of circuit breaking and reclosing in a short time, to ensure that the circuit can quickly recover power supply after transient fault.

[0004] However, the on-off action of vacuum three -phase recloser by the above-mentioned way often needs to rely on permanent magnet mechanism or spring mechanism, when permanent magnet mechanism gradually weakens due to high temperature, when spring mechanism loses elasticity due to aging, then vacuum three -phase recloser will not be able to play normal on-off action.

[0005] Therefore, a small -size outdoor vacuum three -phase recloser is proposed to solve or alleviate the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the shortcomings in the prior art, and provides a small -size outdoor vacuum three -phase recloser.

[0007] In order to achieve the above object, the utility model adopts the following technical scheme:

[0008] A small outdoor vacuum three-phase recloser includes a housing, a vacuum interrupter chamber fixedly connected to and communicating with the top surface of the housing, a current transformer fixedly connected to one side of the vacuum interrupter chamber, a side frame fixedly connected to one side of the housing, a support frame fixedly connected between the two side frames, and an insulating support column fixedly connected to the support frame. A disconnect switch rotatably connected to the current transformer and connected to the insulating support column is rotatably connected to the top of the current transformer. A drive motor is installed inside the housing. A moving guide rod is vertically slidably connected inside the vacuum interrupter chamber. A transmission mechanism is drivingly connected between the moving guide rod and the drive motor. A driven shaft is rotatably connected between the two side frames. A buffer deflection block is fixedly connected to the driven shaft. An insulating column is rotatably connected to the end of the buffer deflection block away from the driven shaft. The upper end of the insulating column is rotatably connected to the disconnect switch. The transmission mechanism is drivingly connected to the driven shaft.

[0009] Preferably, the transmission mechanism includes a sliding rod horizontally arranged inside the housing, a hinge plate rotatably connected to the sliding rod, a hinge block rotatably connected to the hinge plate, and a hinge block fixedly connected to the lower end of the moving guide rod. A sliding rod is fixedly connected to the bottom surface of the sliding rod, and a guide plate is fixedly connected to the output shaft of the drive motor. A guide groove is provided on the guide plate, and the sliding rod is slidably connected in the guide groove.

[0010] Preferably, a first adjusting end block is rotatably connected to both sides of one end of the sliding rod, and an anti-collision spring is fixedly connected to the first adjusting end block. A second adjusting end block is fixedly connected to the end of the anti-collision spring away from the first adjusting end block. The two second adjusting end blocks are also rotatably connected to the sliding rod. A buffer block protruding from the second adjusting end block is fixedly connected between the portions of the two second adjusting end blocks protruding from the sliding rod.

[0011] Preferably, a screw is fixedly connected to the end of the sliding rod away from the buffer block, and an active rotating shaft is rotatably connected to the side wall of the housing. A threaded sleeve is coaxially fixedly connected to the side of the active rotating shaft facing the screw. The threaded sleeve is threadedly connected to the screw, and the thread helix angle of the external thread of the screw and the internal thread of the threaded sleeve is greater than the equivalent friction angle of the helical pair formed by the external thread of the screw and the internal thread of the threaded sleeve.

[0012] Preferably, a rotating seat coaxially arranged with the driving shaft is fixedly connected to the driving shaft, an eccentrically arranged sliding column is fixedly connected to the rotating seat, an eccentric plate is fixedly connected to the driven shaft, a transmission rod is rotatably connected to the eccentric plate, a movable sliding groove is formed on the transmission rod along its length, and the sliding column is slidably connected in the movable sliding groove.

[0013] Preferably, a plurality of buffer deflection blocks are fixedly connected to the driven rotating shaft, and the buffer deflection blocks are rotatably connected to hinge columns. A buffer spring is sleeved on the outer side of the hinge column. A plurality of vertically opened slots are provided on the support frame. The end of the hinge column away from the buffer deflection block is slidably connected in the slot. The two ends of the buffer spring abut against the support frame and the buffer deflection block, respectively. There is an included angle between the buffer deflection block rotatably connected to the hinge column and the buffer deflection block rotatably connected to the insulating column.

[0014] Preferably, a V-shaped plate is rotatably connected to the housing, one end of the V-shaped plate has a moving groove, a cylinder that is slidably connected to the side wall of the sliding rod is fixedly connected to the sliding groove, an adjusting shaft is rotatably connected to the other end of the V-shaped plate, an adjusting spring is fixedly connected to the adjusting shaft, an opening groove is opened on the housing, a counter is fixedly connected to the opening groove, a driving plate is rotatably connected to the driving shaft of the counter, and the driving plate is fixedly connected to the other end of the adjusting spring.

[0015] This utility model has the following beneficial effects:

[0016] This invention uses a drive motor to control the guide plate and slide rod, thereby adjusting the height of the hinge plate and moving guide rod. When the slide rod moves, the sliding rod is controlled by the adjusting end block and the buffer block. The anti-collision spring reduces the impact. The thread helix angle design of the screw and the threaded sleeve causes the screw to move and drive the threaded sleeve to rotate, which in turn drives the rotating seat, the slide column, the transmission rod and the eccentric plate, realizing the deflection of the knife switch and the raising and lowering of the insulating column. At the same time, the displacement of the slide rod drives the V-shaped plate and the adjusting shaft, and the adjusting spring pulls the drive plate, which drives the counter to record the number of on and off cycles. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention after the shell is removed. Figure 1 ;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2Enlarged view of point B in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of the present invention after the shell is removed. Figure 2 ;

[0024] Figure 7 for Figure 6 Enlarged view at point D;

[0025] Figure 8 for Figure 6 Enlarged view of point E in the middle.

[0026] 1. Housing; 2. Side frame; 3. Support frame; 4. Vacuum interrupter; 401. Moving guide rod; 5. Current transformer; 6. Insulating column; 7. Insulating support column; 8. Knife switch; 9. Driven shaft; 11. Transmission rod; 1101. Moving slide; 1102. Sliding column; 12. Rotating seat; 13. Driving shaft; 14. Buffer deflection block; 15. Hinge column; 16. Buffer spring; 17. Counter; 17 01. Drive plate; 1702. Adjusting spring; 1703. Adjusting shaft; 1801. Drive motor; 1802. Guide plate; 18021. Guide groove; 1803. Slide rod; 1804. Sliding rod; 18041. First adjusting end block; 10842. Anti-collision spring; 18043. Second adjusting pad; 18044. Buffer block; 18051. Hinge plate; 18052. Hinge block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0031] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] A small outdoor vacuum three-phase recloser, such as Figures 1 to 8 As shown, the device includes a housing 1, a vacuum interrupter 4 fixedly connected to and communicating with the top surface of the housing 1, a current transformer 5 fixedly connected to one side of the vacuum interrupter 4, a side frame 2 fixedly connected to one side of the housing 1, a support frame 3 fixedly connected between the two side frames 2, and an insulating support column 7 fixedly connected to the support frame 3. A knife switch 8 that can be connected to the insulating support column 7 is rotatably connected to the upper part of the current transformer 5. A drive motor 1801 is installed inside the housing 1. A moving guide rod 401 is vertically slidably connected inside the vacuum interrupter 4. A transmission mechanism is connected between the moving guide rod 401 and the drive motor 1801. A driven shaft 9 is rotatably connected between the two side frames 2. A buffer deflection block 14 is fixedly connected to the driven shaft 9. An insulating column 6 is rotatably connected to the end of the buffer deflection block 14 away from the driven shaft 9. The upper end of the insulating column 6 is rotatably connected to the knife switch 8. The transmission mechanism is connected to the driven shaft 9.

[0034] The transmission mechanism includes a sliding rod 1804 horizontally disposed within the housing 1, a hinge piece 18051 rotatably connected to the sliding rod 1804, a hinge block 18052 rotatably connected to the hinge piece 18051, and a hinge block 18052 fixedly connected to the lower end of the moving guide rod 401. A sliding rod 1803 is fixedly connected to the bottom surface of the sliding rod 1804. A guide piece 1802 is fixedly connected to the output shaft of the drive motor 1801. A guide groove 18021 is provided on the guide piece 1802. The sliding rod 1803 is slidably connected within the guide groove 18021. A first adjusting end block 18041 is rotatably connected to both sides of one end of the sliding rod 1804. An anti-collision spring 10842 is fixedly connected to the first adjusting end block 18041. The anti-collision spring 10842 is fixedly connected to a second adjusting end block at one end away from the first adjusting end block 18041. The two second adjusting end blocks are also rotatably connected to the sliding rod 1804. A buffer block 18044 protruding from the second adjusting end block is fixedly connected between the parts of the two second adjusting end blocks protruding from the sliding rod 1804. A screw is fixedly connected to one end of the sliding rod 1804 away from the buffer block 18044. An active rotating shaft 13 is rotatably connected to the side wall of the housing 1. A threaded sleeve is coaxially fixedly connected to the side of the active rotating shaft 13 facing the screw. The threaded sleeve is threadedly connected to the screw. The thread helix angle of the external thread of the screw and the internal thread of the threaded sleeve is greater than the equivalent friction angle of the helical pair formed by the external thread of the screw and the internal thread of the threaded sleeve.

[0035] A rotating seat 12 is fixedly connected to the active rotating shaft 13 and is coaxially arranged with it. An eccentrically arranged sliding column 1102 is fixedly connected to the rotating seat 12. An eccentric plate is fixedly connected to the driven rotating shaft 9. The eccentric plate is rotatably connected to the transmission rod 11. A movable groove 1101 is opened on the transmission rod 11 along its length direction. The sliding column 1102 is slidably connected in the movable groove 1101. Several buffer deflection blocks 14 are also fixedly connected to the driven rotating shaft 9. A hinge column 15 is rotatably connected to the buffer deflection block 14. A buffer spring 16 is sleeved on the outside of the hinge column 15. Several vertically opened through slots are opened on the support frame 3. The end of the hinge column 15 away from the buffer deflection block 14 is slidably connected in the through slot. The two ends of the buffer spring 16 abut against the support frame 3 and the buffer deflection block 14 respectively. There is an included angle between the buffer deflection block 14 rotatably connected to the hinge column 15 and the buffer deflection block 14 rotatably connected to the insulating column 6.

[0036] A V-shaped plate is rotatably connected to the housing 1. One end of the V-shaped plate has a moving groove. A cylinder that is slidably connected in the moving groove is fixedly connected to the side wall of the sliding rod 1804. An adjusting shaft 1703 is rotatably connected to the other end of the V-shaped plate. A vertically arranged adjusting spring 1702 is fixedly connected to the adjusting shaft 1703. An opening groove is opened on the housing 1. A counter 17 is fixedly connected in the opening groove. A driving shaft of the counter 17 is rotatably connected to a driving plate 1701. The driving plate 1701 is fixedly connected to the other end of the adjusting spring 1702.

[0037] In actual operation, this invention can be controlled by the drive motor 1801 to either connect or disconnect the circuit. The drive motor 1801 drives the guide plate 1802 to deflect, which in turn drives the slide rod 1803 located in its guide groove 18021 to slide. This causes the slide rod 1803 to move the slide rod 1804, which in turn causes the slide rod 1804 to deflect the 7-shaped hinge piece 18051. When the hinge piece 18051 deflects, it interacts with the hinge piece... The horizontal height of the hinge block 18052, which is rotatably connected to 18051, can also change. When the horizontal height of the hinge block 18052, which is fixed to the lower end of the moving guide rod 401, changes, the moving guide rod 401 can also change its height accordingly, either raising or lowering it. When the sliding rod 1804 moves, if it moves towards the housing 1, it can also move through the first adjusting end block 18041 and the second adjusting end block. The buffer block 18044 can impact the housing 1 for cushioning. In the middle, the anti-collision spring 10842 also plays a buffering role, preventing the sliding rod 1804 from directly impacting the housing 1. When the sliding rod 1804 slides, it will drive the screw to move. Since the thread helix angle of the external thread of the screw and the internal thread of the threaded sleeve is greater than the equivalent friction angle of the helical pair formed by the external thread of the screw and the internal thread of the threaded sleeve, the displacement of the screw can drive the threaded sleeve to rotate. In this way, the driving shaft 13 can drive the rotating seat 12 to rotate together. When the rotating seat 12 rotates, it drives the sliding column 1102 to deflect. 102 slides within the sliding groove 1101 of the transmission rod 11, which in turn causes the transmission rod 11 to move, causing the transmission rod 11 to drive the eccentric plate and the driven shaft 9 to rotate. The rotation of the driven shaft 9 will cause the buffer deflection block 14 to deflect. Part of the buffer deflection block 14 can drive the hinge column 15 to move, which will compress the buffer spring 16, thus achieving a buffering effect. The other part of the buffer deflection block 14 drives the insulating column 6 to rise or fall, which may drive the knife switch 8 to deflect, thereby determining whether the knife switch 8 is connected to the insulating support column 7.

[0038] It should be noted that when the sliding rod 1804 is displaced, it can drive the cylinder to move, thereby causing the V-shaped plate rotatably mounted on the housing 1 to deflect. When the V-shaped plate deflects, it will drive the adjusting shaft 1703 to pull the driving plate 1701 through the adjusting spring 1702, thereby enabling the driving shaft of the counter 17 to rotate, thus completing the counting of the counter 17, thereby completing the statistics of the number of times the vacuum three-phase recloser is switched on and off.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A small outdoor vacuum three-phase recloser, characterized by, The utility model provides a kind of current transformer, including shell (1), vacuum interrupter (4) being fixedly connected in the top surface of shell (1) and being communicated with it, current transformer (5) being fixedly connected in one side of vacuum interrupter (4), side frame (2) being fixedly connected in one side of shell (1), support frame (3) being fixedly connected between two side frames (2), and insulating pillar (7) being fixedly connected on support frame (3), the upper rotation of current transformer (5) is connected with the knife switch (8) that can be connected with insulating pillar (7), driving motor (1801) is provided in shell (1), dynamic guide rod (401) is vertically slidably connected in vacuum interrupter (4), transmission mechanism is transmissionally connected between dynamic guide rod (401) and driving motor (1801), driven rotary shaft (9) is rotationally connected between two side frames (2), buffer deflection block (14) is fixedly connected on driven rotary shaft (9), insulating column (6) is rotationally connected at the end of buffer deflection block (14) away from driven rotary shaft (9), the upper end of insulating column (6) is rotationally connected with knife switch (8), and transmission mechanism is transmissionally connected with driven rotary shaft (9).

2. A small outdoor vacuum three-phase recloser according to claim 1, characterized in that, The transmission mechanism includes sliding rod (1804) that is horizontally arranged in shell (1), hinged piece (18051) that is rotationally connected on sliding rod (1804), hinged block (18052) that is rotationally connected with hinged piece (18051), and hinged block (18052) that is fixedly connected at the lower end of dynamic guide rod (401), the bottom surface of sliding rod (1804) is fixedly connected with slide bar (1803), the output shaft of driving motor (1801) is fixedly connected with guide piece (1802), guide groove (18021) is formed in guide piece (1802), and slide bar (1803) is slidably connected in guide groove (18021).

3. A small outdoor vacuum three-phase recloser according to claim 2, characterized in that, The end of sliding rod (1804) is rotationally connected with first adjusting end block (18041) on both sides, first adjusting end block (18041) is fixedly connected with anti-collision spring (10842), the end of anti-collision spring (10842) away from first adjusting end block (18041) is fixedly connected with second adjusting end block, both sides second adjusting end block are also rotationally connected on sliding rod (1804), and buffer block (18044) is fixedly connected between the part of both sides second adjusting end block that protrudes sliding rod (1804), and buffer block (18044) is arranged in second adjusting end block.

4. A small outdoor vacuum three-phase recloser according to claim 2, characterized in that, The end of sliding rod (1804) away from buffer block (18044) is fixedly connected with screw rod, driving rotary shaft (13) is rotationally connected on the side wall of shell (1), driving rotary shaft (13) is coaxially fixedly connected with threaded sleeve on the side towards screw rod, threaded sleeve is screwedly connected with screw rod, and the thread angle of outer thread of screw rod and inner thread of threaded sleeve is greater than the equivalent friction angle of screw pair formed by outer thread of screw rod and inner thread of threaded sleeve.

5. A small outdoor vacuum three-phase recloser according to claim 4, characterized in that, The driving shaft (13) is fixedly connected with a rotating seat (12) coaxially arranged, the rotating seat (12) is fixedly connected with a sliding column (1102) arranged eccentrically, the driven shaft (9) is fixedly connected with an eccentric piece, the eccentric piece is rotatably connected with a transmission rod (11), the transmission rod (11) is provided with a moving sliding groove (1101) arranged along the length direction, and the sliding column (1102) is slidably connected in the moving sliding groove (1101).

6. A small outdoor vacuum three-phase recloser according to claim 1, characterized in that, The driven shaft (9) is also fixedly connected with a plurality of buffer deflection blocks (14), the buffer deflection blocks (14) are rotatably connected with a hinged column (15), the outer side of the hinged column (15) is sleeved with a buffer spring (16), the support frame (3) is provided with a plurality of vertically arranged through grooves, one end of the hinged column (15) away from the buffer deflection blocks (14) is slidably connected in the through groove, and the two ends of the buffer spring (16) are respectively in abutment with the support frame (3) and the buffer deflection blocks (14).

7. A small outdoor vacuum three-phase recloser according to claim 2, characterized in that, The shell (1) is rotatably connected with a V-shaped plate, one end of the V-shaped plate is provided with a moving groove, the side wall of the sliding rod (1804) is fixedly connected with a cylinder slidably connected in the moving groove, the other end of the V-shaped plate is rotatably connected with an adjusting shaft (1703), the adjusting shaft (1703) is fixedly connected with an adjusting spring (1702) arranged vertically, the shell (1) is provided with an opening groove, the opening groove is fixedly connected with a counter (17), the driving shaft of the counter (17) is rotatably connected with a driving piece (1701), and the driving piece (1701) is fixedly connected with the other end of the adjusting spring (1702).

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