CN111397765A - Power transformer fault detection equipment - Google Patents

Abstract

The invention discloses a power transformer fault detection device, which belongs to the field of transformer detection devices, and solves the problems that the transformer is not easily fixed during detection and is not conducive to the sampling detection of its internal oil. It includes a support base, a clamp, a support frame, a lifting plate, a fixed base and an oil detector. A clamp is installed on the support base, a power transformer is fixed on the clamp, a fixed base is installed on the top of the power transformer, and a power transformer is installed on the power transformer. Oil detector: It is convenient to fix the power transformer on the support base, and the distance between the fixed bases can be adjusted. It is suitable for the fixing of different types of power transformers. It has high firm strength and good stability, and is convenient for fault detection of power transformers. , and by inserting the oil detector into the oil detection hole of the power transformer, the temperature of the oil in the power transformer is detected, and it is also convenient to sample the oil. Online detection, easy and fast operation.

Description

A kind of power transformer fault detection equipment

technical field

The invention relates to the field of transformer detection equipment, in particular to a power transformer fault detection equipment.

Background technique

A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components include a primary coil, a secondary coil and an iron core (magnetic core). The main functions of the transformer are: voltage transformation, current transformation, impedance transformation, isolation, voltage regulation (magnetic saturation transformer), etc. With the gradual increase of electrical equipment in production and life, higher requirements are also placed on the working performance of transformers. A common transformer is a transformer that uses oil to work, that is, an oil-type transformer. It is a structural type of a transformer, that is, the coil of the transformer is immersed in oil. Oil-immersed transformers are generally installed indoors or outdoors in separate transformers due to the need for fire protection. They have the characteristics of large size, low cost, simple maintenance, good heat dissipation, strong overload capacity and wide adaptability to the environment.

However, in the actual use process, due to the reason that the transformer continues to work for too long, it often occurs that the oil temperature of the oil is abnormal and cannot work normally. In addition, infrared detection is generally used for transformer oil temperature detection, which requires manual inspection of the transformer on a regular or irregular basis. In this way, it is difficult to accurately measure the oil temperature in the transformer.

Moreover, after the transformer oil is used for a long time, the transformer oil cannot be sampled and tested online, and the above-mentioned temperature measurement and oil sampling and testing lack the stability and fixation of the transformer. Therefore, there is a need to provide a power transformer fault detection device aiming at solving the above problems.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a power transformer fault detection device to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A power transformer fault detection device includes a support base, a clamp, a support frame, a lifting plate, a fixed base and an oil detector, wherein a clamp is installed on the support base, a power transformer is fixed on the clamp, and a support base is installed on the support base. There is a support frame, the top of the support frame is connected with a top plate, a top pressure cylinder is installed on the top plate, the bottom of the top pressure cylinder is connected to the lifting plate through the piston rod, the bottom of the lifting plate is connected with a fixed frame, and a guide rod and a fixed frame are installed on the fixed frame. A lead screw; a slider is set on the guide rod and the lead screw, the bottom of the slider is connected with a diagonal brace, and the bottom end of the diagonal brace is connected with a fixed seat;

An oil detection box is also installed at the bottom of the slider, the bottom of the oil detection box is connected with an oil sample pump, the oil sample pump is connected with an oil extraction pipe, and the oil extraction pipe is connected with an oil detector.

As a further solution of the present invention, the guide rod and the lead screw are arranged parallel to each other, one end of the lead screw is connected to a stepper motor, the stepper motor is a forward and reverse servo motor, and the lead screw is threadedly connected to the slider.

As a further solution of the present invention, the number of the diagonal braces is two, the top of which is hinged with the slider, the two diagonal braces are connected by a screw rod, and a locking nut is installed on the screw rod.

As a further solution of the present invention, a spring is also sleeved on the screw rod between the fixed seats at the bottom of the two diagonal braces.

As a further solution of the present invention, the fixture includes a fixing frame, the fixing frame is a rectangular structure, the fixing frame is provided with a fixing slot for placing the power transformer, the screw holes on the side wall of the fixing frame are provided with fastening bolts, and the fastening bolts Internal connection splint.

As a further solution of the present invention, the oil detection box is connected to an oil online detection device.

As a further solution of the present invention, the oil detector includes an oil measuring rod, and the bottom end of the oil measuring rod is provided with an oil suction hole.

As a further solution of the present invention, the oil suction hole is communicated with the oil extraction pipe, the oil extraction pipe is arranged in the oil measurement rod, the top of the oil measurement rod is connected with a tank inlet plate, and the tank inlet plate is provided with gasket.

As a further solution of the present invention, a temperature sensing probe is also installed on the oil measuring rod.

As a further solution of the present invention, the power transformer is provided with pins, the power transformer is also provided with an oil detection hole, and the oil detector is installed in the oil detection hole.

To sum up, the embodiments of the present invention have the following beneficial effects compared with the prior art:

1. The power transformer fault detection device of the present invention fixes the power transformer on the support base through a clamp and a fixed seat, and the distance between the fixed seats can be adjusted, which is suitable for the fixing of different types of power transformers, with high firmness and stability. Good performance, convenient for fault detection of power transformers;

2. By inserting the oil detector into the oil detection hole of the power transformer, the temperature of the oil in the power transformer is detected, and it is also convenient to sample the oil, and the oil sampled into the oil detection box is online. Detection, easy and fast operation.

In order to illustrate the structural features and effects of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the invention.

FIG. 2 is a schematic structural diagram of a clamp in an embodiment of the invention.

FIG. 3 is a schematic structural diagram of an oil detector in an embodiment of the invention.

FIG. 4 is a schematic structural diagram of a diagonal brace connecting a slider in an embodiment of the invention.

Reference numerals: 1-support base, 2-clamp, 3-fixed frame, 4-fixed groove, 5-clamp plate, 6-fastening bolt, 7-support frame, 8-top plate, 9-top pressure cylinder, 10- Piston rod, 11-lifting plate, 12-fixed frame, 13-guide rod, 14-lead screw, 15-stepper motor, 16-slider, 17-inclined bracket, 18-screw, 19-lock nut, 20-Fixed seat, 21-Power transformer, 22-Pin, 23-Oil detection hole, 24-Oil detector, 25-Inlet plate, 26-Gasket, 27-Oil measuring rod, 28-Sense Temperature probe, 29-oil suction hole, 30-oil suction pipe, 31-oil sample pump, 32-oil detection box, 33-oil on-line detection device.

Detailed ways

The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present patent, but should not be construed as a limitation on the present patent.

Example 1

1-4, a power transformer fault detection device includes a support base 1, a clamp 2, a support frame 7, a lifting plate 11, a fixed base 20 and an oil detector 24, and the support base 1 is mounted with a clamp 2 , a power transformer 21 is fixed on the fixture 2, a support frame 7 is installed on the support base 1, a top plate 8 is connected to the top of the support frame 7, and a top pressure cylinder 9 is installed on the top plate 8, and the bottom of the top pressure cylinder 9 passes through the piston. The rod 10 is connected to the lift plate 11, the bottom of the lift plate 11 is connected to a fixed frame 12, a guide rod 13 and a lead screw 14 are installed on the fixed frame 12, the guide rod 13 and the lead screw 14 are arranged parallel to each other, and the screw One end of the rod 14 is connected to the stepping motor 15, and the guide rod 13 and the lead screw 14 are sleeved with a sliding block 16; when the stepping motor 15 is energized and working, the stepping motor 15 drives the lead screw 14 to rotate. In the embodiment of the present invention , the stepping motor 15 is a servo motor with forward and reverse function, the stepping motor 15 can drive the lead screw 14 to rotate clockwise or counterclockwise, when the lead screw 14 is forward and reverse, it drives the threaded connection on it. The block 16 slides laterally along the guide rod 13 to facilitate the adjustment of the position of the slider 16 on the guide rod 13 .

The bottom of the slider 16 is connected with a diagonal brace 17, the number of the diagonal brace 17 is two, and the top of the diagonal brace 17 is hinged with the slider 16, and the two diagonal braces 17 are connected by a screw 18, and the screw 18 A locking nut 19 is installed thereon, and a fixing base 20 is connected to the bottom end of the diagonal brace 17 , and the fixing base 20 is used for fixing the top of the power transformer 21 .

In order to facilitate flexible adjustment of the distance between the fixing bases 20 at the bottom of the two diagonal braces 17 according to the different sizes of the power transformers 21 to adapt to the width of the power transformer 21 , A spring is also sleeved on the screw rod 18 between the fixed bases 20. Under the action of the spring force, the two said fixed bases 20 are stretched outwards. 20 is connected, and through the locking nut 19, the distance between the two fixing bases 20 is adjusted to be the same as the width of the power transformer 21, so as to be suitable for fixing power transformers 21 of different widths.

The fixture 2 includes a fixing frame 3, the fixing frame 3 has a rectangular structure, and a fixing slot 4 is arranged in the fixing frame 3. The fixing slot 4 is used for the placement of the power transformer 21, and the screw holes on the side walls of the fixing frame 3 are provided with Tighten the bolt 6, and the inner side of the tightening bolt 6 is connected to the clamping plate 5. When the tightening bolt 6 is rotated, the tightening bolt 6 reaches the clamping plate 5 and moves to the side of the power transformer 21 in the fixing slot 4 until the clamping plate 5 clamps the power transformer 21. Therefore, the clamping of the power transformer 21 is realized, and the operation is convenient and quick.

In the embodiment of the present invention, the operation process for clamping and fixing the power transformer 21 is as follows:

First, place the power transformer 21 in the fixing slot 4 of the fixture 2, and by screwing the tightening bolts 6, the clamping plate 5 clamps the bottom of the power transformer 21 to fix the bottom of the power transformer 21; then, start the stepper motor 15 to work , through the lead screw 14 to drive the slider 16 to move along the guide rod 13, adjust the position of the slider 16, so that the slider 16 moves directly above the power transformer 21; The distance between the two fixed bases 20 is adjusted so that the distance between the two fixed bases 20 is equal to the width of the power transformer 21, and at this time the two fixed bases 20 are located directly above the power transformer 21; finally, start the top pressure The air cylinder 9 drives the lifting plate 11 and the inclined support frame 17 and the fixing seat 20 under the lifting plate 11 to move downward through the piston rod 10 until the fixing seat 20 presses the top of the power transformer 21 and realizes the fixing of the power transformer 21, thereby The power transformer 21 is stably fixed to facilitate further detection of the fault of the power transformer 21 .

An oil detection box 32 is also installed at the bottom of the slider 16, and the oil detection box 32 is connected to the oil online detection device 33. It should be noted that the oil online detection device 33 in the present application is an application of the prior art. It is used to detect the parameters and performance of the oil in the oil detection box 32; the bottom of the oil detection box 32 is connected to the oil sample pump 31, the oil sample pump 31 is connected to the oil extraction pipe 30, and the oil extraction pipe 30 is connected to the oil detector 24;

The oil detector 24 includes an oil measuring rod 27, wherein the oil extraction pipe 30 is arranged in the oil measuring rod 27, and the bottom end of the oil measuring rod 27 is provided with an oil suction hole 29, and the oil suction hole 29 It is used to absorb the transformer oil inside the power transformer 21, and a temperature sensing probe 28 is also installed on the oil measuring rod 27, and the temperature sensing probe 28 is used to detect the temperature of the transformer oil inside the power transformer 21; The top of the liquid measuring rod 27 is connected with a tank inlet disc 25 , and a sealing gasket 26 is arranged on the tank inlet tray 25 .

Example 2

1-4, a power transformer fault detection device includes a support base 1, a clamp 2, a support frame 7, a lifting plate 11, a fixed base 20 and an oil detector 24, and the support base 1 is mounted with a clamp 2 , a power transformer 21 is fixed on the fixture 2, a support frame 7 is installed on the support base 1, a top plate 8 is connected to the top of the support frame 7, and a top pressure cylinder 9 is installed on the top plate 8, and the bottom of the top pressure cylinder 9 passes through the piston. The rod 10 is connected to the lift plate 11, the bottom of the lift plate 11 is connected to a fixed frame 12, a guide rod 13 and a lead screw 14 are installed on the fixed frame 12, the guide rod 13 and the lead screw 14 are arranged parallel to each other, and the screw One end of the rod 14 is connected to the stepping motor 15, and the guide rod 13 and the lead screw 14 are sleeved with a sliding block 16; when the stepping motor 15 is energized and working, the stepping motor 15 drives the lead screw 14 to rotate. In the embodiment of the present invention , the stepping motor 15 is a servo motor with forward and reverse function, the stepping motor 15 can drive the lead screw 14 to rotate clockwise or counterclockwise, when the lead screw 14 is forward and reverse, it drives the threaded connection on it. The block 16 slides laterally along the guide rod 13 to facilitate the adjustment of the position of the slider 16 on the guide rod 13 .

The bottom of the slider 16 is connected with a diagonal brace 17, the number of the diagonal brace 17 is two, and the top of the diagonal brace 17 is hinged with the slider 16, and the two diagonal braces 17 are connected by a screw 18, and the screw 18 A locking nut 19 is installed thereon, and a fixing base 20 is connected to the bottom end of the diagonal brace 17 , and the fixing base 20 is used for fixing the top of the power transformer 21 .

In order to facilitate flexible adjustment of the distance between the fixing bases 20 at the bottom of the two diagonal braces 17 according to the different sizes of the power transformers 21 to adapt to the width of the power transformer 21 , A spring is also sleeved on the screw rod 18 between the fixed bases 20. Under the action of the spring force, the two said fixed bases 20 are stretched outwards. 20 is connected, and through the locking nut 19, the distance between the two fixing bases 20 is adjusted to be the same as the width of the power transformer 21, so as to be suitable for fixing power transformers 21 of different widths.

The fixture 2 includes a fixing frame 3, the fixing frame 3 has a rectangular structure, and a fixing slot 4 is arranged in the fixing frame 3. The fixing slot 4 is used for the placement of the power transformer 21, and the screw holes on the side walls of the fixing frame 3 are provided with Tighten the bolt 6, and the inner side of the tightening bolt 6 is connected to the clamping plate 5. When the tightening bolt 6 is rotated, the tightening bolt 6 reaches the clamping plate 5 and moves to the side of the power transformer 21 in the fixing slot 4 until the clamping plate 5 clamps the power transformer 21. Therefore, the clamping of the power transformer 21 is realized, and the operation is convenient and quick.

In the embodiment of the present invention, the operation process for clamping and fixing the power transformer 21 is as follows:

First, place the power transformer 21 in the fixing slot 4 of the fixture 2, and by screwing the tightening bolts 6, the clamping plate 5 clamps the bottom of the power transformer 21 to fix the bottom of the power transformer 21; then, start the stepper motor 15 to work , through the lead screw 14 to drive the slider 16 to move along the guide rod 13, adjust the position of the slider 16, so that the slider 16 moves directly above the power transformer 21; The distance between the two fixed bases 20 is adjusted so that the distance between the two fixed bases 20 is equal to the width of the power transformer 21, and at this time the two fixed bases 20 are located directly above the power transformer 21; finally, start the top pressure The air cylinder 9 drives the lifting plate 11 and the inclined support frame 17 and the fixing seat 20 under the lifting plate 11 to move downward through the piston rod 10 until the fixing seat 20 presses the top of the power transformer 21 and realizes the fixing of the power transformer 21, thereby The power transformer 21 is stably fixed to facilitate further detection of the fault of the power transformer 21 .

An oil detection box 32 is also installed at the bottom of the slider 16, and the oil detection box 32 is connected to the oil online detection device 33. It should be noted that the oil online detection device 33 in the present application is an application of the prior art. It is used to detect the parameters and performance of the oil in the oil detection box 32; the bottom of the oil detection box 32 is connected to the oil sample pump 31, the oil sample pump 31 is connected to the oil extraction pipe 30, and the oil extraction pipe 30 is connected to the oil detector 24;

The oil detector 24 includes an oil measuring rod 27, wherein the oil extraction pipe 30 is arranged in the oil measuring rod 27, and the bottom end of the oil measuring rod 27 is provided with an oil suction hole 29, and the oil suction hole 29 It is used to absorb the transformer oil inside the power transformer 21, and a temperature sensing probe 28 is also installed on the oil measuring rod 27, and the temperature sensing probe 28 is used to detect the temperature of the transformer oil inside the power transformer 21; The top of the liquid measuring rod 27 is connected with a tank inlet disc 25 , and a sealing gasket 26 is arranged on the tank inlet tray 25 .

The difference between this embodiment and Embodiment 1 is:

The power transformer 21 is provided with pins 22, and the power transformer 21 is also provided with an oil detection hole 23. When the power transformer 21 needs to be tested for oil, the oil detector 24 is inserted into the oil detection hole 23. Inside, after the tank inlet plate 25 is abutted against the power transformer 21 and the oil detection hole 23 is sealed by the gasket 26, the oil measurement rod 27 is inserted into the power transformer 21, and the temperature probe 28 on the oil measurement rod 27 is used for The temperature of the oil in the power transformer 21 is detected, and the oil suction hole 29 at the bottom of the oil measuring rod 27 is used to extract the oil in the power transformer 21 through the oil extraction pipe 30 after the oil sample pump 31 is started and pump it into the oil. The detection box 32 is used to detect the oil, so as to detect the failure of the power transformer 21 and determine whether the failure is caused by the oil.

The present invention can also perform other fault detection operations after the power transformer 21 is fixed.

The power transformer fault detection device of the present invention fixes the power transformer on the support base through the clamp and the fixed seat, and the distance between the fixed seats can be adjusted, which is suitable for the fixing of different types of power transformers, and has high firmness and stability. , which is convenient for fault detection of power transformers;

By inserting the oil detector into the oil detection hole of the power transformer, while the temperature of the oil in the power transformer is detected, it is also convenient to sample the oil, and conduct online detection of the oil sampled into the oil detection box. The operation is convenient and quick.

The technical principles of the present invention are described above with reference to specific embodiments, which are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. Those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (10)

1. The power transformer fault detection equipment comprises a supporting seat (1), a clamp (2), a supporting frame (7), a lifting plate (11), a fixing seat (20) and an oil detector (24), and is characterized in that the clamp (2) is installed on the supporting seat (1), a power transformer (21) is fixed on the clamp (2), the supporting frame (7) is installed on the supporting seat (1), the top of the supporting frame (7) is connected with a top plate (8), a jacking cylinder (9) is installed on the top plate (8), the bottom of the jacking cylinder (9) is connected with the lifting plate (11) through a piston rod (10), the bottom of the lifting plate (11) is connected with a fixing frame (12), and a guide rod (13) and a lead screw (14) are installed on the fixing frame (12); a sliding block (16) is sleeved on the guide rod (13) and the lead screw (14), the bottom of the sliding block (16) is connected with an inclined strut (17), and the bottom end of the inclined strut (17) is connected with a fixed seat (20);

an oil liquid detection box (32) is further installed at the bottom of the sliding block (16), an oil sample pump (31) is connected to the bottom of the oil liquid detection box (32), an oil liquid extraction pipe (30) is connected to the oil sample pump (31), and an oil liquid detector (24) is connected to the oil liquid extraction pipe (30).

2. The power transformer fault detection device according to claim 1, wherein the guide rod (13) and the lead screw (14) are arranged in parallel, one end of the lead screw (14) is connected with a stepping motor (15), the stepping motor (15) is a positive and negative rotation servo motor, and the lead screw (14) is in threaded connection with the slider (16).

3. The power transformer fault detection device according to claim 2, characterized in that the number of the angle brackets (17) is two, the tops of the angle brackets are hinged with the sliding blocks (16), the two angle brackets (17) are connected through a screw rod (18), and a locking nut (19) is installed on the screw rod (18).

4. The power transformer fault detection device according to claim 3, wherein a spring is further sleeved on the screw rod (18) between the fixed seats (20) at the bottoms of the two angle brackets (17).

5. The power transformer fault detection device according to claim 1, characterized in that the clamp (2) comprises a fixing frame (3), the fixing frame (3) is of a rectangular structure, a fixing groove (4) for placing the power transformer (21) is arranged in the fixing frame (3), a screw hole on the side wall of the fixing frame (3) is provided with a fastening bolt (6), and a clamping plate (5) is connected to the inner side of the fastening bolt (6).

6. A power transformer fault detection apparatus according to claim 1, characterized in that the oil detection tank (32) is connected to an oil on-line detection device (33).

7. A power transformer fault detection apparatus according to any one of claims 1-6, wherein the oil detector (24) comprises an oil measuring rod (27), and an oil suction hole (29) is formed at the bottom end of the oil measuring rod (27).

8. The power transformer fault detection device according to claim 7, wherein the oil suction hole (29) is communicated with an oil extraction pipe (30), the oil extraction pipe (30) is arranged in the oil measuring rod (27), the top of the oil measuring rod (27) is connected with a tank inlet disc (25), and a sealing gasket (26) is arranged on the tank inlet disc (25).

9. A power transformer fault detection device according to claim 7, characterized in that a temperature sensing probe (28) is further mounted on the oil measuring rod (27).

10. A power transformer fault detection device according to claim 7, characterized in that the power transformer (21) is provided with pins (22), the power transformer (21) is further provided with oil detection holes (23), and the oil detector (24) is installed in the oil detection holes (23).

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