Safety protection mechanism of power transformer

Abstract

The utility model discloses a power transformer safety protection mechanism, and relates to the field of power transformer protection. According to the scheme, the transformer comprises a bottom plate, an insulating layer is fixedly connected to the upper surface of the bottom plate, a supporting base is movably connected to the upper surface of the insulating layer, a transformer is fixedly connected to the upper surface of the supporting base, connecting pieces are fixedly connected to the two side faces and the back face of the transformer correspondingly, and oil pipes are fixedly connected to the ends, away from the transformer, of the connecting pieces correspondingly; the two side faces, away from the transformer, of the oil pipe are fixedly connected with first oil tanks, the bottoms of the first oil tanks are fixedly connected with fixing pieces, the upper surface of the transformer is fixedly connected with a relay, the upper surface of the relay is provided with an inserting rod, and the lower portion of the second oil tank is fixedly connected with a connecting oil pipe. The transformer needs to be cooled when being overheated, oil is conveyed into the first oil tanks on the two sides through the oil pipes by means of thermal expansion inside the transformer when being overheated, and when the oil tanks in the transformer are too low, the inductor judges that the oil in the second oil tank is conveyed into the transformer according to a signal.

Description

Technical Field

[0001] The utility model relates to the field of power transformer protection, in particular to a power transformer safety protection mechanism. Background Art

[0002] Power transformers are common equipment in power systems. They are used to convert electrical energy from one voltage level to another so that it can be transmitted and distributed during power transmission and distribution. In order to ensure the safe operation of the transformer, some protective measures need to be taken. When the transformer is in operation, heat is generated inside. If the temperature is too high, it may cause the insulation material to age, become damaged, or even cause a fire. The insulation system of the transformer may fail, resulting in leakage. Leakage poses a threat to personal safety and may cause a fire. In order to prevent leakage, leakage protection devices such as leakage circuit breakers and differential relays are usually used. These devices can monitor the leakage current of the transformer and quickly cut off the power supply when leakage is detected.

[0003] When the power transformer is in continuous operation, it is easy to overheat, which makes it easy to cause faults, such as winding short circuit, insulation damage or loop grounding. When the power transformer is overheated, cooling or other protective measures are taken to prevent the fault from further expanding and protect the safe operation of the transformer. On the other hand, the transformer safety protection mechanism is not very convenient to assemble and disassemble. Utility Model Content

[0004] 1. Utility Model Purpose

[0005] In view of this, the purpose of the utility model is to provide a safety protection mechanism for a power transformer, so as to achieve the effects of cooling the transformer and facilitating assembly and disassembly by circulating oil.

[0006] Second technical solution

[0007] In order to achieve the above technical objectives, the utility model provides a power transformer safety protection mechanism:

[0008] The utility model comprises a bottom plate, an insulating layer is fixedly connected to the upper surface of the bottom plate, a supporting base is movably connected to the upper surface of the insulating layer, a transformer is fixedly connected to the upper surface of the supporting base, connecting pieces are respectively fixedly connected to the two side surfaces and the back of the transformer, oil pipes are respectively fixedly connected to the ends of the connecting pieces away from the transformer, the two side surfaces of the oil pipes away from the transformer are fixedly connected to oil tank 1, the back of the oil pipes away from the transformer is fixedly connected to oil tank 2, a fixing piece is fixedly connected to the bottom of the oil tank 1, a relay is fixedly connected to the upper surface of the transformer, a plug rod is provided on the upper surface of the relay, a top plate is provided on the upper end of the plug rod, an inductor is fixedly connected to the lower surface of the top plate, a wiring terminal is movably connected to the top of the plug rod, and an oil connecting pipe is fixedly connected to the lower part of the oil tank 2.

[0009] Preferably, the four corners of the base plate are fixedly connected to the corners of the oil pipe via fixing members.

[0010] Preferably, the transformer is located in the middle of the upper surface of the bottom plate, and is hollowed out around the oil tank 1, the top plate, and the oil tank 2.

[0011] Preferably, the number of the relays is four, the number of the plug rods is four, and the relays and the plug rods are on the same vertical line and correspond one to one.

[0012] Preferably, the oil pipe can connect the transformer and the oil tank 1, and both ends of the oil pipe are in communication with the interior of the transformer and the oil tank 1.

[0013] Preferably, the number of the connecting oil pipes is three and they are interconnected with oil tank one and oil tank two respectively.

[0014] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0015] 1: When assembling the transformer protection mechanism, the bottom plate and the oil tank 1 on both sides and the oil tank 2 on the back can be directly assembled and fixed through fixing parts, which can be more convenient for assembly and disassembly.

[0016] 2: When the transformer is overheated, it needs to be cooled. When it is overheated, the internal thermal expansion of the transformer will transport the oil to the oil tank 1 on both sides through the oil pipe. When the oil tank in the transformer is too low, the sensor will judge and give a signal to transport the oil in the oil tank 2 to the transformer. After that, the oil tanks on both sides will repeatedly transport the cooled oil to the oil tank 2. The more exposed area in the oil tanks 1 and 2 can speed up the cooling of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of a power transformer safety protection mechanism provided by the utility model;

[0019] Figure 2 A schematic diagram of the explosion structure of a power transformer safety protection mechanism provided by the utility model;

[0020] Figure 3 A rear view structural diagram of a power transformer safety protection mechanism provided by the utility model;

[0021] Figure 4 The present invention is a partial structural diagram of a power transformer safety protection mechanism provided by the utility model.

[0022] Description of the drawings: 1. Bottom plate; 2. Insulation layer; 3. Support base; 4. Transformer; 5. Oil tank 1; 6. Fixing parts; 7. Oil pipe; 8. Connecting parts; 9. Relay; 10. Rod; 11. Top plate; 12. Sensor; 13. Terminal block; 14. Oil tank 2; 15. Connecting oil pipe. DETAILED DESCRIPTION

[0023] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0024] Reference Figure 1-4 :

[0025] A safety protection mechanism for an electric transformer comprises a bottom plate 1, an insulating layer 2 is fixedly connected to the upper surface of the bottom plate 1, a supporting base 3 is movably connected to the upper surface of the insulating layer 2, a transformer 4 is fixedly connected to the upper surface of the supporting base 3, connectors 8 are fixedly connected to the two side surfaces and the back of the transformer 4, oil pipes 7 are fixedly connected to the ends of the connectors 8 away from the transformer 4, oil pipes 7 are fixedly connected to oil tank 1 5 on the two side surfaces away from the transformer 4, oil pipes 7 are fixedly connected to the back of the transformer 4 with oil tank 2 14, a fixing member 6 is fixedly connected to the bottom of the oil tank 1 5, a relay 9 is fixedly connected to the upper surface of the transformer 4, a plug rod 10 is provided on the upper surface of the relay 9, a top plate 11 is provided on the upper end of the plug rod 10, an inductor 12 is fixedly connected to the lower surface of the top plate 11, a wiring terminal 13 is movably connected to the top of the plug rod 10, and a connecting oil pipe 15 is fixedly connected to the lower part of the oil tank 2 14.

[0026] Specifically, the bottom plate 1 is fixedly connected with an insulating layer 2 on the upper surface of the bottom plate 1, and a supporting base 3 is movably connected with the upper surface of the insulating layer 2. The upper surface of the supporting base 3 is fixedly connected with a transformer 4. The two side surfaces and the back of the transformer 4 are respectively fixedly connected with connecting pieces 8. The ends of the connecting pieces 8 away from the transformer 4 are respectively fixedly connected with oil pipes 7. The two side surfaces of the oil pipes 7 away from the transformer 4 are fixedly connected with oil tank 1 5. The back of the oil pipes 7 away from the transformer 4 is fixedly connected with oil tank 2 14. The bottom of the oil tank 1 5 is fixedly connected with a fixing piece 6. The upper surface of the transformer 4 is fixedly connected with a relay 9. The upper surface of the relay 9 is provided with a plug 10. The upper end of the plug 10 is provided with a top plate 11. The lower surface of the top plate 11 is fixedly connected with an inductor 12. The top of the plug 10 is movably connected with a terminal block 13. The lower part of the oil tank 2 14 is fixedly connected with a connecting oil pipe 15.

[0027] More specifically, the four corners of the bottom plate 1 are fixedly connected by the fixing members 6 and the corners of the oil pipe 7 to stabilize the mechanism.

[0028] Furthermore, the transformer 4 is located in the middle of the upper surface of the bottom plate 1, and the surrounding areas and the oil tank 1 5, the top plate 11, and the oil tank 2 14 are hollowed out to leave enough space for ventilation.

[0029] Furthermore, the number of the relays 9 is four, the number of the plug rods 10 is four, and the relays 9 and the plug rods 10 are on the same vertical line, corresponding one to one, thereby achieving a predetermined control effect.

[0030] Preferably, the oil pipe 7 can connect the transformer 4 and the oil tank 5, and both ends of the oil pipe 7 are interconnected with the interior of the transformer 4 and the oil tank 5, thereby achieving an interconnection effect between the three oil tanks.

[0031] More preferably, there are three connecting oil pipes 15 which are respectively connected to the oil tank 1 5 and the oil tank 2 14 to achieve the effect of circulating the oil in the transformer.

[0032] It should be noted that the four corners of the base plate 1 are fixedly connected by the fixing parts 6 and the corners of the oil pipe 7 to play a role of fixed support; the transformer 4 is located in the middle of the upper surface of the base plate 1, and the surrounding areas and the oil tank 1 5, the top plate 11, and the oil tank 2 14 are hollowed out, leaving enough space for ventilation; there are four relays 9, and four plug rods 10, and the relays 9 and the plug rods 10 are on the same vertical line, one-to-one corresponding, and the top surface of the relay 9 is in contact with the bottom surface of the plug rod 10; the oil pipe 7 can connect the transformer 4 and the oil tank 1 5, and the two ends of the oil pipe 7 are interconnected with the inside of the transformer 4 and the oil tank 1 5; there are three connecting oil pipes 15, which are respectively interconnected with the oil tank 1 5 and the oil tank 2 14.

[0033] Working principle: When assembling the transformer protection mechanism, the installation between the bottom plate 1 and the oil tank 1 5 on both sides and the oil tank 2 14 on the back can be directly assembled and fixed through the fixing parts 6, which can be assembled and disassembled more conveniently. When the transformer is overheated, it needs to be cooled down. When it is overheated, the internal thermal expansion of the transformer will transport the oil to the oil tank 1 5 on both sides through the oil pipe 7. When the oil tank in the transformer 4 is too low, the sensor 12 will judge and give a signal to transport the oil in the oil tank 2 14 to the transformer 4. After that, the oil tank 1 5 on both sides will transport the cooled oil to the oil tank 2 14. Among them, the oil tank 1 5 and the oil tank 2 14 expose more area to speed up the cooling of the oil.

[0034] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. A power transformer safety protection mechanism, comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected to an insulating layer (2), the upper surface of the insulating layer (2) is movably connected to a support base (3), the upper surface of the support base (3) is fixedly connected to a transformer (4), the two side surfaces and the back surface of the transformer (4) are respectively fixedly connected to connecting members (8), the ends of the connecting members (8) away from the transformer (4) are respectively fixedly connected to oil pipes (7), the two side surfaces of the oil pipes (7) away from the transformer (4) are fixedly connected to oil tanks (5), and the ends of the oil pipes (7) away from the transformer (4) are respectively fixedly connected to the ends of the oil pipes (8) away from the transformer (4). The back side is fixedly connected with oil tank 2 (14), the bottom of the oil tank 1 (5) is fixedly connected with a fixing piece (6), the upper surface of the transformer (4) is fixedly connected with a relay (9), the upper surface of the relay (9) is provided with a plug rod (10), the upper end of the plug rod (10) is provided with a top plate (11), the lower surface of the top plate (11) is fixedly connected with an inductor (12), the top of the plug rod (10) is movably connected with a wiring terminal (13), and the lower part of the oil tank 2 (14) is fixedly connected with a connecting oil pipe (15).

2. A power transformer safety protection mechanism according to claim 1, characterized in that: The four corners of the bottom plate (1) are fixedly connected to the corners of the oil pipe (7) via fixing members (6).

3. A power transformer safety protection mechanism according to claim 1, characterized in that: The transformer (4) is located in the middle of the upper surface of the bottom plate (1), and its surroundings, as well as the oil tank 1 (5), the top plate (11), and the oil tank 2 (14) are in a hollow state.

4. A power transformer safety protection mechanism according to claim 1, characterized in that: The number of the relays (9) is four, and the number of the plug rods (10) is four, and the relays (9) and the plug rods (10) are located on the same vertical line and correspond one to one.

5. A power transformer safety protection mechanism according to claim 1, characterized in that: The oil pipe (7) can connect the transformer (4) and the oil tank (5), and the two ends of the oil pipe (7) are in communication with the interior of the transformer (4) and the oil tank (5).

6. A power transformer safety protection mechanism according to claim 1, characterized in that: The connecting oil pipes (15) are three in number and are respectively interconnected with the first oil tank (5) and the second oil tank (14).

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