Reactor adjusting system with large-capacity adjusting range
By using the main coil, thick adjusting coil, and fine adjusting coil in series in the reactor, and using the motor screw to drive the insulated moving arm to change the number of coil turns, the problem of inability to adjust when the line load of the reactor is changed, and the reactance value is achieved Multi-stage adjustment and accuracy of state detection while simplifying the structure and ensuring tank sealing.
Patent Information
- Application Number
- CN202323487823.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing reactor structure cannot effectively adjust the reactance value when the line load changes, and the on-load switch structure is complex and easily affected by accuracy, resulting in a deviation in status indication.
The main coil, thick adjustment coil and fine adjustment coil are connected in series in turn, and the insulated moving arm is driven by the motor screw to change the number of coil turns to achieve reactance adjustment, simplifying the structure and improving accuracy.
It realizes a large-scale multi-stage adjustment of the reactance value, simplifies the structure, improves the accuracy of the reactance value state, and ensures that the internal seal of the oil tank is not leaked through sealing joints, supporting overall mobile installation and synchronous adjustment.
Smart Images
Figure CN222233438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of reactors, in particular to a reactor regulating system with a large capacity regulating range. Background Art
[0002] Reactors are used to achieve functions such as reactive power compensation and current limiting of transmission line capacitors. In gap-type iron core reactor products, the first and last outgoing wires of the traditional iron core shunt reactor winding structure are led out of the box cover through high and low voltage bushings. This structure can only provide a fixed reactance value. When the line load changes and fluctuates greatly, it cannot effectively adjust the capacitance compensation according to the line load. In order to solve the above problems, a reactor structure capable of adjusting the reactance value has appeared in the prior art. For example, a gap-type iron core reactor with a load switch or a no-load switch and its adjustment method are disclosed in the Chinese invention patent with publication number CN104752042A. The purpose of multi-level adjustment of the reactance value is achieved by sequentially arranging the main coil, coarse adjustment coil and fine adjustment coil structure on the iron core from the inside to the outside. The principle is that the capacity of the load-adjustable graded shunt reactor is inversely proportional to the inductance of the reactor, and the change of inductance is achieved by changing the number of winding turns. In addition, a Chinese utility model patent with authorization announcement number CN206807015U also discloses an iron core reactor with a double zero-crossing adjustment function, which includes a turn-adjusting coil, and the turn-adjusting washer also includes a coarse adjustment coil and a fine adjustment coil.
[0003] However, the coarse adjustment coil, fine adjustment coil and other structures in the prior art usually need to cooperate with the on-load switch or other switches to realize the conversion, and the existing on-load switch mainly uses the mechanical transmission system to realize the adjustment drive, and its structure is relatively complex. For example, the Chinese invention patent with the authorization announcement number of CN101383221B discloses a three-phase reactance on-load tap changer, in which the static contact of each single-phase reactance switch is distributed in a circle around the central axis of the moving contact of the switch, and the central axis of the moving contact is driven to rotate by the intermediate gear, and the intermediate gear transmits torque through the transmission gear, the transmission shaft and the groove wheel progressive mechanism, and the structure is relatively complex. In addition, the existing on-load switch mainly uses a turntable to realize the conversion of the indication state. For example, the Chinese invention patent with the authorization announcement number of CN108037448B discloses a on-load voltage regulating switch switching test device, which sets the turntable of the on-load switch at the upper end of the oil tank, and the turntable cooperates with the pointer fixed at the upper end of the oil tank to indicate the state. This method is easily affected by factors such as processing accuracy or assembly accuracy, resulting in deviation of the state indication. Utility Model Content
[0004] The purpose of the utility model is to provide a reactor adjustment system with a large capacity adjustment range, which utilizes a main coil, a coarse adjustment coil, and a fine adjustment coil connected in series in sequence to achieve a large range of multi-stage adjustment of the reactance value, and at the same time utilizes a motor screw structure to drive the movement of an insulating movable arm to achieve adjustment. While simplifying the structure, the reactance value state can also be obtained more accurately.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A reactor adjustment system with a large capacity adjustment range comprises an iron core and a main coil, a coarse adjustment coil and a fine adjustment coil arranged outside the iron core and connected in series in sequence, wherein the main coil head end is provided with a coil head end outlet connected to an external line, the connection line between the main coil and the coarse adjustment coil is provided with a first adjustment outlet, the connection line between the coarse adjustment coil and the fine adjustment coil is provided with a second adjustment outlet, the fine adjustment coil tail end is provided with a coil end outlet, and the fine adjustment coil is provided with a plurality of fine adjustment coil outlets, and also comprises an adjustment mechanism, and the adjustment mechanism comprises an insulating mounting frame, an insulating movable arm, a lead screw and a driving motor, wherein one side of the insulating mounting frame is provided with a mounting vertical plate , and a plurality of terminal boards are arranged on the mounting vertical plate, the end of the first adjustment outlet, the end of the second adjustment outlet, the end of the fine adjustment coil outlet and the end of the coil end outlet are respectively connected to the corresponding terminal boards through lines, the insulating movable arm is slidably connected to the insulating mounting frame, and the front end of the insulating movable arm is provided with an adjustment terminal corresponding to the terminal board, the end of the insulating movable arm is provided with a nut sleeved on the lead screw, and the lead screw is driven to rotate by the drive motor, the drive motor is provided with a rotation detection element, the rear end of the insulating movable arm is provided with a connecting plate connected to the external circuit, and the adjusting terminal is connected to the connecting plate through a circuit.
[0007] A slide plate is provided on the side of the insulating mounting frame away from the mounting vertical plate, and a sliding block is provided on the lower side of the insulating movable arm to cooperate with a sliding rail provided on the slide plate.
[0008] The insulating mounting frame, the driving motor and the lead screw are integrated in a mounting housing, and the mounting housing is arranged on one side of the reactor oil tank. A sealing joint for connecting electrical lines is arranged on the wall of the reactor oil tank.
[0009] An incoming line bushing is provided on the upper side of the reactor oil tank, and the end of the outgoing line at the first end of the coil is connected to the corresponding incoming line bushing. An outgoing line bushing is provided on the outer side of the mounting shell, and the connecting plate at the rear end of the insulating movable arm is connected to the corresponding outgoing line bushing through a line.
[0010] The advantages and positive effects of the utility model are:
[0011] 1. The utility model adjusts the reactance value by changing the number of turns of the connected coil, and uses the main coil, the coarse adjustment coil, and the fine adjustment coil to be connected in series in sequence to achieve the purpose of large-range multi-stage adjustment of the reactance value. At the same time, the utility model uses the motor screw structure to drive the movement of the insulating movable arm to achieve the change of the number of turns of the connected coil. While simplifying the structure, the reactance value state can also be obtained more accurately.
[0012] 2. The utility model can integrate the insulating mounting frame, the driving motor, and the lead screw into a mounting shell, and the mounting shell can be arranged on one side of the reactor oil tank. At the same time, the electrical circuit connection is realized between the mounting shell and the reactor oil tank through a sealing joint to ensure that the internal seal of the oil tank does not leak oil. In this way, the utility model can be installed and used as a whole, and the driving motors in each mounting shell can also be controlled by the control system to achieve synchronous rotation, thereby achieving the purpose of synchronous adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the winding structure of the utility model.
[0014] Figure 2 This is a schematic diagram of the structure of the adjustment mechanism of the utility model.
[0015] Figure 3 This is a schematic diagram of the structure of an application example of the utility model.
[0016] Figure 4 for Figure 3 Top view of the application example.
[0017] Among them, 1 is the iron core, 2 is the main coil, 3 is the coarse adjustment coil, 4 is the fine adjustment coil, 401 is the fine adjustment coil outlet, 5 is the winding head end outlet, 6 is the first adjustment outlet, 7 is the second adjustment outlet, 8 is the coil end outlet, 9 is the connecting plate, 10 is the mounting plate, 11 is the drive motor, 12 is the lead screw, 13 is the slide plate, 14 is the insulating movable arm, 15 is the mounting shell, 16 is the reactor oil tank, 17 is the upper iron yoke, 18 is the lower iron yoke, 19 is the incoming bushing, 20 is the outgoing bushing, and 21 is the sealing joint. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] like Figures 1 to 4 As shown, the utility model comprises an iron core 1, a main coil 2, a coarse adjustment coil 3, a fine adjustment coil 4 and an adjustment mechanism, wherein Figure 1As shown, the outer side of the iron core 1 is provided with a main coil 2, a coarse adjustment coil 3 and a fine adjustment coil 4 in sequence from the inside to the outside, and the main coil 2, the coarse adjustment coil 3 and the fine adjustment coil 4 are connected in series in sequence, the head end of the main coil 2 is provided with a coil head end outlet 5, the connecting line between the main coil 2 and the coarse adjustment coil 3 is provided with a first adjustment outlet 6, the connecting line between the coarse adjustment coil 3 and the fine adjustment coil 4 is provided with a second adjustment outlet 7, the tail end of the fine adjustment coil 4 is provided with a coil end outlet 8, and the fine adjustment coil 4 is provided with a plurality of fine adjustment coil outlets 401, and the above structures are all well known technologies in the field.
[0020] like Figure 2 As shown, in this embodiment, the adjustment mechanism includes an insulating mounting frame, an insulating movable arm 14, a lead screw 12 and a drive motor 11, wherein a mounting vertical plate 10 is provided on one side of the insulating mounting frame, and a plurality of terminal boards are provided on the mounting vertical plate 10, and the end (X1 end) of the first adjustment outlet 6, the end (X2 end) of the second adjustment outlet 7, the end of the fine adjustment coil outlet 401 and the end (X3 end) of the coil end outlet 8 are respectively connected to the corresponding terminal boards, the insulating movable arm 14 is slidably connected to the insulating mounting frame, and the front end of the insulating movable arm 14 is provided with an adjustment terminal corresponding to the terminal board, the end of the insulating movable arm 14 is provided with a nut sleeved on the lead screw 12, and the lead screw 12 is driven to rotate by the drive motor 11 to realize the movement of the insulating movable arm 14, and the rear end of the insulating movable arm 14 is provided with a connecting plate 9, and the adjusting terminal is connected to the connecting plate 9 through a line. When the utility model is working, the end (A end) of the coil head end outlet 5 is connected to the external circuit, and the connecting plate 9 at the rear end of the insulating movable arm 14 is also connected to the external circuit. At the same time, the insulating movable arm 14 moves so that the adjustment terminal at its front end contacts with different terminal boards respectively, thereby achieving the purpose of changing the number of turns of the connected line coil, thereby achieving the reactance value adjustment, and the driving motor 11 monitors the speed in real time through a rotating detection element (such as an encoder), and calculates the moving distance of the insulating movable arm 14 through conversion by the control system, which is a well-known technology in the art, thereby realizing the monitoring of the moving distance of the insulating movable arm 14, and determining the position of the terminal board corresponding to the connection of its front end voltage regulating terminal through the moving distance of the insulating movable arm 14, thereby obtaining the total number of turns of the coil connected to the line at this time, and then the control system converts according to the number of turns of the connected coil to obtain the reactance value of the connected line at this time and display it on the display screen of the system. Compared with the prior art, the utility model has a simpler structure, and the utility model directly obtains the speed of the driving motor 11 through the rotating detection element for conversion, and its state detection is also more accurate.
[0021] like Figure 2As shown, in this embodiment, a slide plate 13 is provided on one side of the insulating mounting frame, and a slider is provided on the lower side of the insulating movable arm 14 to cooperate with the slide rail provided on the slide plate 13 to achieve a sliding connection. At the same time, the slide plate 13 can also ensure the vertical lifting of the insulating movable arm 14, thereby ensuring that the adjustment terminal at its front end can be accurately connected with the terminal board.
[0022] like Figure 2 As shown, in this embodiment, the insulating mounting frame, the drive motor 11, and the lead screw 12 can be integrated into a mounting housing 15, and as shown in FIG. Figures 3-4 The installation housing 15 can be arranged on one side of the reactor oil tank 16. The reactor oil tank 16 is provided with an upper iron yoke 17 and a lower iron yoke 18 for fixing each group of coils. This is a well-known technology in the art. In addition, an inlet bushing 19 is provided on the upper side of the reactor oil tank 16, and the end (A end) of the coil head end outlet 5 in each group of coils is connected to the corresponding inlet bushing 19. An outlet bushing 20 is provided on the outside of the installation housing 15, and the connecting plate 9 at the rear end of the insulating movable arm 14 is connected to the corresponding outlet bushing 20 through a line. At the same time, the line must be sufficiently long. The degree meets the movement and adjustment needs of the insulating movable arm 14. A sealing joint 21 is provided on the wall of the reactor oil tank 16. After each outgoing line end of each group of coils passes through the corresponding sealing joint 21, it enters the corresponding installation shell 15 and is connected to the corresponding terminal board. The sealing joint 21 ensures that the internal seal of the reactor oil tank 16 will not leak oil. The sealing joint 21 is a well-known technology in the art and is a commercially available product. It has been widely used in fields such as underwater robots. For example, this embodiment can adopt the electrical connector for underwater robots in the CN218101848U patent.
[0023] The working principle of the utility model is:
[0024] like Figures 1-2 As shown, the utility model mainly realizes the reactance value adjustment by changing the number of turns of the connected coil, wherein when the adjustment terminal at the front end of the insulating movable arm 14 is connected to the terminal board corresponding to the first adjustment outlet 6, at this time, as shown in FIG. Figure 1 As shown, only the main coil 2 is connected to the system line, and when the adjustment terminal at the front end of the insulating movable arm 14 is connected to the terminal board corresponding to the second adjustment outlet 7, Figure 1 As shown, the main coil 2 and the coarse adjustment coil 3 are both connected to the system line. When the adjustment terminal at the front end of the insulating movable arm 14 is connected to the terminal board corresponding to any fine adjustment coil outlet 401, Figure 1 As shown, the corresponding parts of the main coil 2, the coarse adjustment coil 3 and the fine adjustment coil 4 are all connected to the system line. When the adjustment terminal at the front end of the insulating movable arm 14 is connected to the terminal board corresponding to the coil end outlet 8, Figure 1As shown, the main coil 2, the coarse adjustment coil 3 and all the fine adjustment coils 4 are connected to the system circuit.
[0025] The utility model utilizes a driving motor 11 to drive the lead screw 12 to rotate, thereby driving the insulating movable arm 14 to move and adjust. On the one hand, this structure simplifies the structure. On the other hand, the utility model directly obtains the rotation speed of the driving motor 11 through a rotating detection element and converts it, and its state detection is more accurate. At the same time, the change of the reactance value can also be displayed in real time on the system screen.
[0026] The utility model can integrate the insulating mounting frame, the driving motor 11, and the lead screw 12 into a mounting housing 15, and Figures 3-4 As shown, the mounting shell 15 can be arranged on one side of the reactor oil tank 16, and at the same time, the electrical circuit connection is realized between the mounting shell 15 and the reactor oil tank 16 through a sealing joint 21 to ensure that the internal seal of the oil tank does not leak oil. In this way, the utility model can be installed and used as a whole, and the driving motors 11 in each mounting shell 15 can also be controlled by the control system to realize synchronous rotation, thereby achieving the purpose of synchronous regulation.
Claims
1. A reactor adjustment system with a large capacity adjustment range, comprising an iron core and a main coil, a coarse adjustment coil and a fine adjustment coil arranged outside the iron core and connected in series in sequence, wherein the main coil head end is provided with a coil head end outlet connected to an external circuit, the connection line between the main coil and the coarse adjustment coil is provided with a first adjustment outlet, the connection line between the coarse adjustment coil and the fine adjustment coil is provided with a second adjustment outlet, the fine adjustment coil tail end is provided with a coil end outlet, and the fine adjustment coil is provided with a plurality of fine adjustment coil outlets, characterized in that: The invention comprises an adjusting mechanism, and the adjusting mechanism comprises an insulating mounting frame, an insulating movable arm (14), a lead screw (12) and a driving motor (11), wherein a mounting vertical plate (10) is provided on one side of the insulating mounting frame, and a plurality of terminal plates are provided on the mounting vertical plate (10), and the ends of the first adjusting outlet line (6), the second adjusting outlet line (7), the fine adjustment coil outlet line (401) and the coil end outlet line (8) are respectively connected to the corresponding terminal plates through lines, the insulating movable arm (14) is slidably connected to the insulating mounting frame, and the front end of the insulating movable arm (14) is provided with an adjusting terminal corresponding to the terminal plate, the end of the insulating movable arm (14) is provided with a nut sleeved on the lead screw (12), and the lead screw (12) is driven to rotate by the driving motor (11), and the driving motor (11) is provided with a rotation detection element, and the rear end of the insulating movable arm (14) is provided with a connecting plate (9) connected to an external line, and the adjusting terminal is connected to the connecting plate (9) through a line.
2. The reactor regulation system with a large capacity regulation range according to claim 1 is characterized in that: A slide plate (13) is provided on the side of the insulating mounting frame away from the mounting vertical plate (10), and a sliding block is provided on the lower side of the insulating movable arm (14) to cooperate with a sliding rail provided on the slide plate (13).
3. The reactor regulation system with a large capacity regulation range according to claim 1 is characterized in that: The insulating mounting frame, the drive motor (11), and the lead screw (12) are integrated in a mounting housing (15), and the mounting housing (15) is arranged on one side of a reactor oil tank (16), and a sealing joint (21) for connecting an electrical line is provided on a wall of the reactor oil tank (16).
4. The reactor regulation system with a large capacity regulation range according to claim 3 is characterized in that: An incoming line bushing (19) is provided on the upper side of the reactor oil tank (16), and the end of the coil head end outgoing line (5) is connected to the corresponding incoming line bushing (19), an outgoing line bushing (20) is provided on the outer side of the mounting housing (15), and a connecting plate (9) at the rear end of the insulating movable arm (14) is connected to the corresponding outgoing line bushing (20) via a line.