Leakage protection device for transformer

Abstract

The utility model discloses an electric leakage protection device for a transformer, and particularly relates to the technical field of transformer electric leakage protection, the electric leakage protection device comprises a transformer insulation box mechanism, the front end of the transformer insulation box mechanism is fixedly connected with a protection mechanism I, and the top of the transformer insulation box mechanism is fixedly connected with a protection shed mechanism; a side edge detection mechanism is fixedly connected to the outer surface of the transformer insulation box mechanism, a grounding mechanism is fixedly connected to the side, close to the side edge detection mechanism, of the outer surface of the transformer insulation box mechanism, and a bottom supporting mechanism is fixedly connected to the bottom of the transformer insulation box mechanism. When the electric leakage protection device is used, a transformer insulation box mechanism is fixedly connected with a first protection mechanism, a side edge detection mechanism and a grounding mechanism, a detection piece is arranged at the position of a handle of a door plate, and the current condition at the position is monitored in real time through the detection piece; a current value is detected and displayed through a current detector.

Description

Technical Field

[0001] This utility model relates to the field of transformer leakage protection technology, and in particular to a leakage protection device for transformers. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization. Transformers are widely used in power transmission and distribution, power user distribution, industrial and agricultural production, and other fields, and are the basic equipment for power transmission and distribution.

[0003] Transformers may experience leakage during operation due to external environmental factors or their own inherent causes, which can easily lead to safety hazards.

[0004] Chinese patent publication number CN208189337U discloses a transformer leakage protection and lifting device, including a transformer body, a conductive chain, a crank handle, and a filter screen. The transformer body is fitted with a protective shell, and a rubber pad is installed between the transformer body and the protective shell. The top end of the conductive chain is connected to the protective shell via a mounting block. A base is installed at the lower end of the transformer body, and a mounting groove is formed on the inner surface of the base. The crank handle is mounted on the surface of the base, and a rotating rod is installed between the crank handle and the telescopic mesh. The top end of the filter screen is connected to the protective shell via a fixing block. In this transformer leakage protection and lifting device, the rubber pad and the transformer body fit tightly together, reducing the impact force when an external object hits the transformer body, thus protecting it. Heat dissipation fins are evenly spaced on the top surface of the protective shell, facilitating the dissipation of heat generated by the transformer body during operation.

[0005] In some existing technologies, due to various factors, transformers may experience leakage during operation. If this is not detected in time, it can easily lead to safety hazards and damage the transformer facilities. Furthermore, if operators are unaware of the leakage and directly contact the transformer housing, they may face life-threatening situations. Utility Model Content

[0006] The main purpose of this utility model is to provide a leakage protection device for transformers, which can effectively solve the problem that in some existing technologies, leakage may occur in transformers during operation due to various factors. If it is not detected in time, it can easily cause safety hazards and damage to transformer facilities. Moreover, if operators do not know about the leakage and directly contact the tank, it can easily lead to life-threatening problems.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A leakage current protection device for a transformer includes a transformer insulation box mechanism. A protection mechanism is fixedly connected to the front end of the transformer insulation box mechanism. A protective canopy mechanism is fixedly connected to the top of the transformer insulation box mechanism. A side detection mechanism is fixedly connected to the outer surface of the transformer insulation box mechanism. A grounding mechanism is fixedly connected to the side of the outer surface of the transformer insulation box mechanism near the side detection mechanism. A bottom support mechanism is fixedly connected to the bottom of the transformer insulation box mechanism.

[0009] Preferably, the transformer insulation box mechanism includes a transformer insulation box body, and door panels are symmetrically engaged at the front ends of the transformer insulation box body, with door locks fixedly connected to the front ends of both door panels.

[0010] Preferably, detection plates are symmetrically fixedly connected to the upper side of the front end of the two door locks, and a connecting connector is fixedly connected to the opposite side of each of the two detection plates. A current detector is fixedly connected to the opposite side of each of the two connecting connectors.

[0011] Preferably, detection probes are symmetrically fixedly connected to the left and right sides and the rear end of the outer surface of the transformer insulation box. Several detection probes located on the same side are fixedly connected to a second connector at opposite ends. A signal processing unit box is fixedly connected to the front ends of the opposite faces of two second connectors. A multi-channel current detector is fixedly connected to the front end of the signal processing unit box. A sensor is fixedly connected to the upper left end of the multi-channel current detector. A power supply box is fixedly connected to the left side of the sensor. A connector is fixedly connected to the top of the power supply box. A warning light is fixedly connected to the top of the connector.

[0012] Preferably, the grounding mechanism includes four lead blocks, which are respectively fixedly connected to the left and right sides and the rear end of the outer surface of the transformer insulation box. A wiring wire is fixedly connected to the middle of the outer surface of each of the lead blocks, and a grounding device is fixedly connected to the bottom of each of the wiring wires.

[0013] Preferably, the bottom support mechanism includes an elevated base box, and the front and rear ends of the bottom of the transformer insulation box are symmetrically and fixedly connected with ground-contact support seats.

[0014] Preferably, the transformer insulation box is symmetrically and fixedly connected to the top of the left and right sides with mounting support bases, the top of the mounting support bases are all fixedly connected to the roof, the four corners of the bottom of the roof are fixedly connected to the bottom support bases, and the left and right sides of the bottom of the roof are symmetrically and fixedly connected to the inclined baffles.

[0015] Preferably, the lower ends of the two inclined baffles facing each other are fixedly connected to the left and right sides of the outer surface of the raised base box, respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the implementation of this utility model, by setting up a protection mechanism, a detection plate is set at the handle of the door panel. The detection plate monitors the current at this location in real time. The current value is detected and displayed by a current detector. When contacting a transformer, the current detector is checked first, which can, to a certain extent, prevent safety incidents caused by transformer leakage.

[0018] 2. In the implementation of this utility model, by setting up a side detection mechanism, detection probes are respectively set at multiple positions on the left, right and rear sides of the transformer insulation box mechanism. The detection probes monitor the outer surface of the transformer insulation box in real time. When leakage occurs in the transformer inside the transformer insulation box mechanism, the detection probes monitor the leakage and transmit the data to the signal processing unit box for processing. Then, the data is monitored by two multi-channel current detectors. If the current exceeds the set value, the data is transmitted to the power supply box through the sensor, causing the power supply box to control the warning light to light up as a warning. This achieves the effect of detecting the current on the outside of the transformer. The overall operation is simple and convenient.

[0019] 3. In the implementation of this utility model, by setting a bottom support mechanism, most transformers are located in outdoor environments and the transformer's grounding wire is connected to the ground. If a fault occurs inside the transformer and causes insulation damage, the current will flow into the ground through the wiring wire instead of through the human body, thereby protecting personal safety. This provides a low-impedance path so that the leakage current flows to the ground, reducing the risk of electric shock. Setting up an elevated base box and ground-contact support seat can raise the overall height, thereby preventing ground moisture from rising and directly contacting the transformer.

[0020] 4. In the implementation of this utility model, by setting up a protective canopy mechanism, rainwater can be prevented from directly wetting the outside of the transformer insulation box mechanism. This can reduce the transformer from getting damp, extend its service life, and prevent the risk of leakage caused by the decrease in insulation performance due to moisture. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the protective shed structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the side detection mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the grounding mechanism of this utility model;

[0025] Figure 5This is a schematic diagram of the bottom support mechanism of this utility model;

[0026] Figure 6 This is a schematic diagram of the grounding mechanism of this utility model.

[0027] In the diagram: 1. Transformer insulation box mechanism; 101. Transformer insulation box body; 102. Door panel; 103. Door lock; 2. Protection mechanism one; 201. Detection plate; 202. Connection joint one; 203. Current detector one; 3. Protective canopy mechanism; 301. Canopy roof; 302. Sloping side baffle; 303. Bottom support base; 304. Mounting support base; 4. Side detection mechanism; 401. Detection probe; 402. Connection joint two; 403. Signal processing unit box; 404. Multi-channel current detector two; 405. Sensor; 406. Power supply box; 407. Connection base; 408. Warning light; 5. Grounding mechanism; 501. Current lead block; 502. Wiring wire; 503. Grounding device; 6. Bottom support mechanism; 601. Elevated base box; 602. Ground contact support base. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] like Figure 1-6 As shown, a leakage protection device for a transformer includes a transformer insulation box mechanism 1, a protection mechanism 2 fixedly connected to the front end of the transformer insulation box mechanism 1, a protective canopy mechanism 3 fixedly connected to the top of the transformer insulation box mechanism 1, a side detection mechanism 4 fixedly connected to the outer surface of the transformer insulation box mechanism 1, a grounding mechanism 5 fixedly connected to the side of the outer surface of the transformer insulation box mechanism 1 near the side detection mechanism 4, and a bottom support mechanism 6 fixedly connected to the bottom of the transformer insulation box mechanism 1.

[0030] The signal processing unit box 403 in this solution is equipped with a leakage current sensor, which can detect minute leakage current and convert it into a monitorable signal. The current detector 203 can be a current detection product of the OMRON model, and the multi-channel current detector 404 can be a leakage current tester of the LK2680C model in the prior art, which is suitable for various leakage current tests, including transformer leakage detection. Since it is a very mature product in the prior art, it will not be described in detail in this application.

[0031] In this embodiment, the transformer insulation box mechanism 1 is fixedly connected to the protection mechanism 2, the side detection mechanism 4, and the grounding mechanism 5. A detection plate 201 is installed at the handle of the door panel 102 to monitor the current at this location in real time. The current value is detected and displayed by the current detector 203. When leakage occurs in the transformer inside the transformer insulation box mechanism 1, it is monitored by the detection probe 401, and the data is transmitted to the signal processing unit box 403 for processing. Then, it is monitored by the multi-channel current detector 404. If the current exceeds the set value, it triggers the circuit breaker. The signal is transmitted from sensor 405 to power supply box 406, which then controls warning light 408 to illuminate, thus achieving the effect of detecting the current on the outside of the transformer. The current flows to the ground through wiring 502. By providing a low-impedance path, the leakage current flows to the ground, reducing the risk of electric shock. The raised base box 601 and ground support 602 can raise the overall height, and the protective canopy mechanism 3 can prevent rainwater from directly wetting the outside of the transformer insulation box mechanism 1. This can prevent the risk of leakage caused by the decrease in the insulation performance of the transformer insulation box mechanism 1 due to moisture.

[0032] Further reference Figure 4 and Figure 5 In this embodiment, the transformer insulation box mechanism 1 includes a transformer insulation box 101. The front end of the transformer insulation box 101 is symmetrically connected to door panels 102. The front ends of the two door panels 102 are fixedly connected to door locks 103. By placing the transformer inside the transformer insulation box 101, the effect of insulating and protecting its exterior is achieved.

[0033] For details, please refer to Figure 4 and Figure 5 In this embodiment, detection plates 201 are symmetrically fixedly connected to the upper side of the front end of the two door locks 103. Connecting connectors 202 are fixedly connected to the opposite sides of the two detection plates 201. Current detectors 203 are fixedly connected to the opposite sides of the two connecting connectors 202. Due to various factors, the transformer may experience leakage during operation. If it is not detected in time, it can easily cause safety hazards and damage to the transformer facilities. Moreover, if the operator does not know about the leakage and directly touches the box, it can easily lead to life-threatening situations. To optimize this phenomenon, detection plates 201 are set at the handle of the door panel 102. The current situation at this location is monitored in real time by the detection plates 201. The current value is detected and displayed by the current detectors 203. When touching the transformer, check the current detectors 203 first, which can, to a certain extent, avoid safety incidents caused by transformer leakage.

[0034] Further reference Figure 3 and Figure 4In this embodiment, detection probes 401 are symmetrically fixedly connected to the left, right, and rear ends of the outer surface of the transformer insulation box 101. Several detection probes 401 located on the same side have their opposite ends fixedly connected to connecting connectors 402. Signal processing unit box 403 is fixedly connected to the front ends of the opposite faces of two connecting connectors 402. A multi-channel current detector 404 is fixedly connected to the front end of the signal processing unit box 403. A sensor 405 is fixedly connected to the upper left side of the multi-channel current detector 404. A power supply box 406 is fixedly connected to the left side of the sensor 405. A connector 407 is fixedly connected to the top of the power supply box 406. A warning device is fixedly connected to the top of the connector 407. The transformer insulation box mechanism 1 has multiple detection probes 401 installed on its left, right, and rear sides. These probes monitor the outer surface of the transformer insulation box 101 in real time. When leakage occurs in the transformer inside the transformer insulation box mechanism 1, the detection probes 401 monitor the leakage and transmit the data to the signal processing unit box 403 for processing. The data is then monitored by the multi-channel current detector 404. If the current exceeds the set value, the data is transmitted to the power supply box 406 via the sensor 405. This causes the power supply box 406 to control the warning light 408 to illuminate, thus achieving the effect of detecting the current on the outside of the transformer. The overall operation is simple and convenient.

[0035] Further reference Figure 6 In this embodiment, the grounding mechanism 5 includes four lead blocks 501, which are fixedly connected to the left and right sides and the rear end of the outer surface of the transformer insulation box 101, respectively. A wiring wire 502 is fixedly connected to the middle of the outer surface of each of the lead blocks 501, and a grounding device 503 is fixedly connected to the bottom of each of the wiring wires 502. Most transformers are located in outdoor environments, and the transformer's grounding wire is connected to the ground. If a fault occurs inside the transformer, causing insulation damage, the current will flow into the ground through the wiring wire 502 instead of through the human body, thereby protecting personal safety. This provides a low-impedance path so that the leakage current flows to the ground, reducing the risk of electric shock.

[0036] Further reference Figure 2 and Figure 5In this embodiment, the bottom support mechanism 6 includes an elevated base box 601. The front and rear ends of the transformer insulation box 101 are symmetrically and fixedly connected to ground contact support seats 602. The top of the transformer insulation box 101 is symmetrically and fixedly connected to mounting support seats 304. The top of the mounting support seats 304 is fixedly connected to a canopy 301. Bottom support seats 303 are fixedly connected to the four corners of the bottom of the canopy 301. The left and right sides of the bottom of the canopy 301 are symmetrically and fixedly connected to inclined baffles 302. The lower ends of the opposite sides of the two inclined baffles 302 are respectively fixedly connected to the left and right sides of the outer surface of the elevated base box 601. The elevated base box 601 and ground contact support seats 602 can raise the overall height, thereby preventing ground moisture from rising and directly contacting the transformer. The protective canopy mechanism 3 can prevent rainwater from directly wetting the outside of the transformer insulation box mechanism 1. This can reduce the transformer from getting damp, extend its service life, and prevent the risk of leakage caused by the decrease in insulation performance due to moisture.

[0037] The working principle of this utility model is as follows: During use, the transformer insulation box mechanism 1 is fixedly connected to the protection mechanism 2, the side detection mechanism 4, and the grounding mechanism 5. A detection plate 201 is installed at the handle of the door panel 102. The detection plate 201 monitors the current at this location in real time. The current value is detected and displayed by the current detector 203. When leakage occurs in the transformer inside the transformer insulation box mechanism 1, it is monitored by the detection probe 401, and the data is transmitted to the signal processing unit box 403 for processing. Then, it is monitored by the multi-channel current detector 404. If the current exceeds the set value... The value is transmitted to the power supply box 406 via the sensor 405, causing the power supply box 406 to control the warning light 408 to illuminate, thereby achieving the effect of detecting the current on the outside of the transformer. The current flows into the ground through the wiring wire 502, providing a low-impedance path so that the leakage current flows to the ground, reducing the risk of electric shock. The raised base box 601 and the ground support 602 can raise the overall height, and the protective canopy mechanism 3 can prevent rainwater from directly wetting the outside of the transformer insulation box mechanism 1, thus preventing the risk of leakage caused by the decrease in the insulation performance of the transformer insulation box mechanism 1 due to moisture.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leakage current protection device for a transformer, comprising a transformer insulation box mechanism (1), characterized in that: The front end of the transformer insulation box mechanism (1) is fixedly connected to a protection mechanism (2), the top of the transformer insulation box mechanism (1) is fixedly connected to a protective canopy mechanism (3), the outer surface of the transformer insulation box mechanism (1) is fixedly connected to a side detection mechanism (4), the outer surface of the transformer insulation box mechanism (1) near the side detection mechanism (4) is fixedly connected to a grounding mechanism (5), and the bottom of the transformer insulation box mechanism (1) is fixedly connected to a bottom support mechanism (6).

2. The leakage current protection device for a transformer according to claim 1, characterized in that: The transformer insulation box mechanism (1) includes a transformer insulation box body (101), and door panels (102) are symmetrically engaged at the front end of the transformer insulation box body (101). Door locks (103) are fixedly connected to the front ends of both door panels (102).

3. A leakage current protection device for a transformer according to claim 2, characterized in that: Detection plates (201) are symmetrically fixedly connected to the upper side of the front end of the two door locks (103). Connecting connectors (202) are fixedly connected to the opposite sides of the two detection plates (201). Current detectors (203) are fixedly connected to the opposite sides of the two connecting connectors (202).

4. A leakage current protection device for a transformer according to claim 2, characterized in that: The transformer insulation box (101) has detection probes (401) symmetrically fixedly connected to the left and right sides and the rear end of the outer surface. Several detection probes (401) located on the same side have two connection joints (402) fixedly connected to their opposite ends. The front ends of the two connection joints (402) are fixedly connected to a signal processing unit box (403). The front end of the signal processing unit box (403) is fixedly connected to a multi-channel current detector (404). The upper left end of the multi-channel current detector (404) is fixedly connected to a sensor (405). The left side of the sensor (405) is fixedly connected to a power supply box (406). The top of the power supply box (406) is fixedly connected to a connector (407). The top of the connector (407) is fixedly connected to a warning light (408).

5. A leakage current protection device for a transformer according to claim 1, characterized in that: The grounding mechanism (5) includes four lead blocks (501), which are fixedly connected to the left and right sides and the rear end of the outer surface of the transformer insulation box (101), respectively. A wiring wire (502) is fixedly connected to the middle of the outer surface of several lead blocks (501), and a grounding device (503) is fixedly connected to the bottom of several wiring wires (502).

6. A leakage current protection device for a transformer according to claim 2, characterized in that: The bottom support mechanism (6) includes an elevated base box (601), and the front and rear ends of the transformer insulation box (101) are symmetrically and fixedly connected with ground support seats (602).

7. A leakage current protection device for a transformer according to claim 2, characterized in that: The transformer insulation box (101) is symmetrically fixedly connected to the top of the left and right sides of the top of the transformer insulation box (101). The top of the installation support (304) is fixedly connected to the roof (301). The bottom of the roof (301) is fixedly connected to the four corners of the bottom of the roof (301). The bottom of the roof (301) is symmetrically fixedly connected to the left and right sides of the bottom of the roof (301) with inclined baffles (302).

8. A leakage current protection device for a transformer according to claim 7, characterized in that: The lower ends of the two inclined baffles (302) opposite sides are respectively fixedly connected to the left and right sides of the outer surface of the raised base box (601).

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