Inrush current suppression device of transformer

Abstract

The utility model relates to the technical field of inrush current suppressors, and discloses an inrush current suppression device of a transformer, which comprises an inrush current suppressor main body, U-shaped grooved wheels are fixedly connected to the left side and the right side of the inrush current suppressor main body, a connecting mechanism is rotatably connected to the U-shaped grooved wheels, a fixing assembly is rotatably connected to the connecting mechanism, and the fixing assembly is fixedly connected to the inrush current suppressor main body. Two first inverted-T-shaped sliding grooves parallel to each other are formed in the upper surface of the inrush current suppressor body, two second inverted-T-shaped sliding grooves parallel to each other are formed in the back face of the inrush current suppressor body, and a limiting assembly is arranged in the inrush current suppressor body. The inrush current suppression device of the transformer can be installed on the top or the side wall of a cabinet body, after the inrush current suppressor body is damaged, the inrush current suppressor body can be maintained without being detached, the inrush current suppressor body can be lifted and transferred before installation or after detachment, and operation is easy, fast and convenient.

Description

Technical Field

[0001] This utility model relates to the field of inrush current suppression technology, specifically to an inrush current suppression device for a transformer. Background Technology

[0002] Transformer inrush current, also known as magnetizing inrush current, mainly occurs when an unloaded transformer is first connected to the power supply, resulting in a large current on the power supply side, which can be as high as 6 to 8 times the rated current. This inrush current not only damages operating equipment, such as causing malfunctions of protection devices, damage to transformers and circuit breakers, and inducing switching overvoltages, but also affects the stability of the power grid and power quality. Therefore, inrush current suppression devices have been developed to suppress this inrush current.

[0003] Patent CN219421356U discloses a novel transformer inrush current suppression device, comprising an inrush current suppressor body and a transformer cabinet. A mounting bracket is fixedly connected to one side of the transformer cabinet on the inrush current suppressor body. A movable bracket is movably inserted into the mounting bracket. Insertion slots are provided on both sides of the middle of the movable bracket, and fixing blocks are movably inserted into the insertion slots. A first spring is fixedly connected to the top of the fixing blocks. Fixing slots are provided on the bottom and top surfaces of the inrush current suppressor body. This invention allows for quick installation and fixation of the inrush current suppressor body using fixing blocks, facilitating its attachment to the transformer cabinet surface for transformer use. Simultaneously, the inrush current suppressor body can be removed and rotated, bringing it to the maintenance personnel's view without requiring removal for repairs.

[0004] However, the above technology still has the following problems:

[0005] The installation of inrush suppressors is relatively simple and inflexible, and it is not convenient to install and remove them. As a result, after the inrush suppressor is damaged, it must be removed from the cabinet before it can be repaired. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a transformer inrush current suppression device that facilitates the installation and disassembly of the inrush current suppressor and makes maintenance easier.

[0007] This utility model provides the following technical solution: a transformer inrush current suppression device, including an inrush current suppressor body, U-shaped grooved wheels fixedly connected to the left and right sides of the inrush current suppressor body, a connecting mechanism rotatably connected to the U-shaped grooved wheels, a fixing component rotatably connected to the connecting mechanism, two parallel first inverted T-shaped grooves opened on the upper surface of the inrush current suppressor body, two parallel second inverted T-shaped grooves opened on the back side of the inrush current suppressor body, and a limit component provided inside the inrush current suppressor body.

[0008] Furthermore, the first inverted T-shaped groove is connected to the second inverted T-shaped groove, and the first inverted T-shaped groove and the second inverted T-shaped groove have the same cross-section.

[0009] Furthermore, the number of the connecting mechanisms is two, and they are symmetrically arranged about both sides of the inrush suppressor body.

[0010] Furthermore, the connecting mechanism includes a circular tube rotatably connected to a U-shaped grooved wheel, a multi-stage telescopic rod fixedly connected to the circular tube, and a connecting rod fixedly connected to the inner surface of the multi-stage telescopic rod.

[0011] Furthermore, the fixing component includes a fixing plate, with circular grooves provided in the middle of both sides of the fixing plate, an inverted T-shaped sliding rod that matches the first inverted T-shaped groove fixedly connected to the lower surface of the fixing plate, and two parallel grooves provided on the upper surface of the fixing plate.

[0012] Furthermore, the limiting component includes a first circular hole at both ends of the inverted T-shaped slide bar, a second circular hole inside the inrush suppressor body, the second circular hole being connected to the first inverted T-shaped slide groove and the second inverted T-shaped slide groove, the first circular hole and the second circular hole together forming a circular channel, and a plug rod being slidably connected inside the first circular hole and the second circular hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The inrush current suppression device for this type of transformer can be installed on the top or side wall of the cabinet. After the main body of the inrush current suppressor is damaged, it can be repaired without disassembling it. Before or after installation, it can be lifted and moved. The operation is simple, quick and convenient. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the overall front of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the back of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the connecting mechanism, fixing component, and limiting component of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the U-shaped grooved wheel of this utility model;

[0019] Figure 5 for Figure 2 Enlarged view of point A above.

[0020] In the figure: 1. Inrush suppressor body; 2. U-shaped groove wheel; 3. Connecting mechanism; 301. Round tube; 302. Multi-stage telescopic rod; 303. Connecting rod; 4. Fixing component; 401. Fixing plate; 402. Circular groove; 403. Inverted T-shaped slide bar; 404. Groove; 5. First inverted T-shaped groove; 6. Second inverted T-shaped groove; 7. Limiting component; 701. First round hole; 702. Second round hole; 703. Insert rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1 to 5 A transformer inrush current suppression device includes an inrush current suppressor body 1. U-shaped grooved wheels 2 are fixedly connected to the left and right sides of the inrush current suppressor body 1. A connecting mechanism 3 is rotatably connected to the U-shaped grooved wheels 2. A fixing component 4 is rotatably connected to the connecting mechanism 3. Two parallel first inverted T-shaped grooves 5 are formed on the upper surface of the inrush current suppressor body 1. Two parallel second inverted T-shaped grooves 6 are formed on the back side of the inrush current suppressor body 1. A limit component 7 is provided inside the inrush current suppressor body 1.

[0023] The inrush current suppression device for transformers in this utility model is structurally similar to existing transformer closing inrush current suppression devices. For example, patent CN219421356U discloses a novel transformer closing inrush current suppression device. The main improvement of this utility model is that by installing connecting mechanisms 3 on both sides of the inrush current suppressor body 1, and connecting fixing components 4 to the connecting mechanisms 3, the inrush current suppressor body 1 can be installed on the top or side wall of the cabinet, and maintenance of the inrush current suppressor body 1 can be performed without disassembly. Figures 1 to 5As shown, in the transformer inrush current suppression device of this utility model, during installation, the worker first grasps the fixing plate 401 and pulls it. Under the action of the connecting mechanism 3, the fixing plate 401 can be positioned flush with the upper surface or back of the inrush current suppressor body 1. Then, the fixing plate 401 is pushed so that the inverted T-shaped slide rod 403 slides into the first inverted T-shaped slide groove 5 or the second inverted T-shaped slide groove 6. Then, the insertion rod 703 is inserted into the first round hole 701 and the second round hole 702, so that the fixing plate 401 is fixed to the upper surface or back of the inrush current suppressor body 1. Thus, the inrush current suppressor body 1 can be secured by the fixing plate 401. Fixed to the top or side wall of the cabinet, when the surge suppressor body 1 is damaged, the insertion rod 703 is pulled out from the first round hole 701 and the second round hole 702, and the surge suppressor body 1 can be detached from the fixing plate 401 outward or downward. Under the action of the connecting component, the surge suppressor body 1 is suspended inside the cabinet, so that there is enough space to repair the surge suppressor body 1. After the repair is completed, the surge suppressor body 1 is slid back into the inverted T-shaped slide rod 403 on the fixing plate 401 in reverse order, and the insertion rod 703 is reinserted into the first round hole 701 and the second round hole 702, so that it can be used again.

[0024] like Figure 2 or Figure 5 As shown, the first inverted T-shaped slide 5 is connected to the second inverted T-shaped slide 6, and the cross-sections of the first inverted T-shaped slide 5 and the second inverted T-shaped slide 6 are the same.

[0025] Specifically, the first inverted T-shaped groove 5 and the second inverted T-shaped groove 6 are for connecting the inverted T-shaped slide rod 403 to it, so that the fixing plate 401 can be fixed on the upper surface or side of the inrush suppressor body 1.

[0026] like Figure 1 As shown, there are two connecting mechanisms 3, which are symmetrically arranged about both sides of the inrush suppressor body 1.

[0027] Specifically, the connecting mechanism 3 connects to the fixed component 4, enabling it to rotate and move while maintaining a horizontal position.

[0028] like Figure 3 As shown, the connecting mechanism 3 includes a circular tube 301 rotatably connected to the U-shaped grooved wheel 2, a multi-stage telescopic rod 302 fixedly connected to the circular tube 301, and a connecting rod 303 fixedly connected to the inner surface of the multi-stage telescopic rod 302.

[0029] Specifically, during the process of fixing the fixing plate 401 to the upper or back surface of the inrush suppressor body 1, the fixing plate 401 is moved. The fixing plate 401 rotates with the connecting rod 303. At the same time, as the fixing plate 401 moves to be flush with the upper or back surface of the inrush suppressor body 1, the multi-stage telescopic rod 302 also lengthens, so that it can smoothly slide into the first inverted T-shaped groove 5 or the second inverted T-shaped groove 6. During the sliding process, the multi-stage telescopic rod 302 will also gradually retract, so that the insertion rod 703 can be inserted for fixation. At the same time, the inrush suppressor body... 1. During maintenance, pull out the insertion rod 703 from the first round hole 701 and the second round hole 702. Then, the surge suppressor body 1 can be detached from the fixing plate 401 outward or downward. Under the action of the multi-stage telescopic rod 302, the surge suppressor body 1 is suspended inside the cabinet, thus providing sufficient space for maintenance. After maintenance, reverse the operation, slide the surge suppressor body 1 back onto the inverted T-shaped slide rod 403 on the fixing plate 401, and reinsert the insertion rod 703 into the first round hole 701 and the second round hole 702 for continued use.

[0030] like Figure 1 , Figure 2 or Figure 3 As shown, the fixing component 4 includes a fixing plate 401. Circular grooves 402 are provided at the middle positions of both sides of the fixing plate 401. An inverted T-shaped sliding rod 403 that matches the first inverted T-shaped sliding groove 5 is fixedly connected to the lower surface of the fixing plate 401. Two parallel grooves 404 are provided on the upper surface of the fixing plate 401.

[0031] Specifically, the inverted T-shaped slide bar 403 at the lower end of the fixing plate 401 is slid into the first inverted T-shaped slide groove 5 or the second inverted T-shaped slide groove 6, and the insertion rod 703 is inserted into the first round hole 701 and the second round hole 702 to fix the fixing plate 401 to the inrush suppressor body 1. The round slide groove 402 allows the fixing plate 401 to rotate on the connecting rod 303 to adjust the angle of the fixing plate 401. Before installation, the inrush suppressor body 1 can be lifted by grasping the two grooves 404 to facilitate its transfer.

[0032] like Figure 3 As shown, the limiting component 7 includes a first circular hole 701 at both ends of the inverted T-shaped slide bar 403, a second circular hole 702 inside the surge suppressor body 1, the second circular hole 702 being connected to the first inverted T-shaped slide groove 5 and the second inverted T-shaped slide groove 6, the first circular hole 701 and the second circular hole 702 together forming a circular channel, and a plug rod 703 being slidably connected inside the first circular hole 701 and the second circular hole 702.

[0033] Specifically, after the inverted T-shaped slide bar 403 is slid into the first inverted T-shaped slide groove 5 or the second inverted T-shaped slide groove 6, since the first round hole 701 and the second round hole 702 together form a circular channel, inserting the plug bar 703 into the first round hole 701 and the second round hole 702 can restrict the inrush current suppressor body 1, thereby ensuring that when the inrush current suppressor body 1 is fixed to the top or side wall of the cabinet, it will not slide and fall.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transformer inrush current suppression device, comprising an inrush current suppressor body (1), characterized in that: The left and right sides of the surge suppressor body (1) are fixedly connected to U-shaped grooved wheels (2), and a connecting mechanism (3) is rotatably connected to the U-shaped grooved wheels (2). A fixing component (4) is rotatably connected to the connecting mechanism (3). Two parallel first inverted T-shaped grooves (5) are opened on the upper surface of the surge suppressor body (1), and two parallel second inverted T-shaped grooves (6) are opened on the back side of the surge suppressor body (1). A limit component (7) is provided inside the surge suppressor body (1).

2. The inrush current suppression device for a transformer according to claim 1, characterized in that: The first inverted T-shaped groove (5) is connected to the second inverted T-shaped groove (6), and the first inverted T-shaped groove (5) and the second inverted T-shaped groove (6) have the same cross-section.

3. A transformer inrush current suppression device according to claim 1 or 2, characterized in that: The number of the connecting mechanisms (3) is two, and they are symmetrically arranged about both sides of the inrush suppressor body (1).

4. The inrush current suppression device for a transformer according to claim 3, characterized in that: The connecting mechanism (3) includes a round tube (301) rotatably connected to the U-shaped groove wheel (2), a multi-stage telescopic rod (302) fixedly connected to the round tube (301), and a connecting rod (303) fixedly connected to the inner surface of the multi-stage telescopic rod (302).

5. A transformer inrush current suppression device according to claim 1, 2 or 4, characterized in that: The fixing component (4) includes a fixing plate (401), a circular groove (402) is provided at the middle position of both sides of the fixing plate (401), an inverted T-shaped slide rod (403) that matches the first inverted T-shaped slide groove (5) is fixedly connected to the lower surface of the fixing plate (401), and two parallel grooves (404) are provided on the upper surface of the fixing plate (401).

6. The inrush current suppression device for a transformer according to claim 3, characterized in that: The fixing component (4) includes a fixing plate (401), a circular groove (402) is provided at the middle position of both sides of the fixing plate (401), an inverted T-shaped slide rod (403) that matches the first inverted T-shaped slide groove (5) is fixedly connected to the lower surface of the fixing plate (401), and two parallel grooves (404) are provided on the upper surface of the fixing plate (401).

7. The inrush current suppression device for a transformer according to claim 5, characterized in that: The limiting component (7) includes a first circular hole (701) at both ends of the inverted T-shaped slide bar (403) and a second circular hole (702) inside the surge suppressor body (1). The second circular hole (702) is connected to the first inverted T-shaped slide groove (5) and the second inverted T-shaped slide groove (6). The first circular hole (701) and the second circular hole (702) together form a circular channel. Insert rods (703) are slidably connected inside the first circular hole (701) and the second circular hole (702).

8. The inrush current suppression device for a transformer according to claim 6, characterized in that: The limiting component (7) includes a first circular hole (701) at both ends of the inverted T-shaped slide bar (403) and a second circular hole (702) inside the surge suppressor body (1). The second circular hole (702) is connected to the first inverted T-shaped slide groove (5) and the second inverted T-shaped slide groove (6). The first circular hole (701) and the second circular hole (702) together form a circular channel. Insert rods (703) are slidably connected inside the first circular hole (701) and the second circular hole (702).

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