CN114371193A - Transformer fault diagnosis device - Google Patents

Abstract

The invention discloses a transformer fault diagnosis device, comprising: a combustion container; an igniter; an air intake pipe, which connects the combustion container, a connecting pipe between a transformer box cover and an oil conservator, and a first on-off valve is arranged on the air intake pipe; The combustion container is connected, and a second switch valve is arranged on a hose on the vacuum pump; the monitoring device is used to feedback the pressure change in the combustion container before and after the combustion of the combustible gas in the combustion container; the first time relay, the second time relay, the third time relay A time relay and a fourth time relay; a controller; a ventilation pipe, which is arranged on the combustion container, and a third on-off valve is arranged on the ventilation pipe. In the present invention, the pressure change in the combustion container is repeatedly fed back to the staff by the monitoring device, and the staff can diagnose whether the transformer is faulty by observing the difference in the pressure change in the combustion container. The overall structure is relatively simple, the cost is low, and the fault diagnosis is fast. quick.

Description

A transformer fault diagnosis device

technical field

The invention relates to the technical field of fault diagnosis of equipment in stores, in particular to a transformer fault diagnosis device.

Background technique

Power equipment mainly includes two categories: power generation equipment and power supply equipment. Power generation equipment is mainly power station boilers, steam turbines, gas turbines, hydraulic turbines, generators, transformers, etc. device and so on. A large part of the failure of power transformers is caused by the large heat generation of the original components and the high temperature. The existing relatively mature transformer online monitoring and fault diagnosis technology adopts the characteristic gas method of dissolved gas analysis in oil. Fault diagnosis based on dissolved gas in oil is often based on the content of various gases (or the ratio of one gas to another gas) at a certain time. The content of dissolved gas in oil is only a static representation. When the fault is serious, the content of dissolved gas in the oil will increase significantly. It is difficult to determine the appropriate content of dissolved gas in the oil as the critical value for fault diagnosis. There is a certain lag in fault diagnosis. At the same time, the transformer is online. Monitoring and fault diagnosis equipment is expensive, with many parts and components, and subsequent maintenance is relatively difficult.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a transformer fault diagnosis device in order to solve the above technical problems.

Technical scheme of the present invention: a transformer fault diagnosis device, comprising:

burning container;

an igniter, one end of several spark plugs on the igniter is arranged in the combustion container;

an air intake pipe, connecting the combustion container and the connecting pipe between the transformer tank cover and the oil storage tank, and a first on-off valve is arranged on the air intake pipe;

a vacuum pump, connected with the combustion container, and a second switch valve is arranged on a hose of the vacuum pump;

a monitoring device for feeding back the pressure change in the combustion container before and after the combustion of the combustible gas in the combustion container;

The first time relay, the second time relay, the third time relay and the fourth time relay;

controller;

The ventilation pipe is arranged on the combustion container, and the ventilation pipe is provided with a third on-off valve.

Preferably, the monitoring device includes a conduit, a piston, a guide rod, a camera and a buffer device, the conduit is provided on the combustion vessel, the piston can slide in the conduit, and a scale is provided on the guide rod One end is connected with the piston, the camera is used for photographing the position of the guide rod after moving relative to the catheter, and the buffer device is used for driving the guide rod back to the original position.

Preferably, the buffer device includes two support blocks, two guide rods, two springs and a baffle, the guide rods are arranged on the support blocks, and the springs are sleeved on the guide rods, so that the The baffle can slide on the guide rod.

Preferably, the air intake pipe includes a first air pipe and a second air pipe, and the first air pipe and the second air pipe are detachably connected; and also includes a driving device, a first sensor, a second sensor and a bracket, and the driving device uses For driving the combustion container to move back and forth on the support, the first sensor and the second sensor are arranged on the support.

Preferably, the first trachea is chamfered in a truncated cone shape.

Preferably, a plurality of sliding blocks are provided at the bottom of the combustion container, and at least two sliding grooves are provided on the support.

Preferably, the driving device includes two motors, two rotating drums and two sections of pulling ropes, the rotating drums are arranged on the output end of the motors, and the pulling ropes connect the rotating drums and the combustion container.

The beneficial effects of the present invention are: in the present invention, the pressure change in the combustion container is repeatedly fed back to the staff through the monitoring device, and the staff can diagnose whether the transformer is faulty by observing the difference in the pressure change in the combustion container, and the overall structure is relatively simple, Low cost and fast fault diagnosis.

Description of drawings

Fig. 1 is the overall structure sectional view of the preferred embodiment of the present invention;

Fig. 2 is a partial enlarged view at A in Fig. 1;

3 is a schematic diagram of a combustion vessel in a preferred embodiment of the present invention.

Reference numerals: combustion vessel 1, slider 101, igniter 2, intake pipe 3, first switch valve 31, first gas pipe 32, second gas pipe 33, vacuum pump 4, second switch valve 41, monitoring device 5, conduit 51, piston 52, guide rod 53, camera 54, buffer device 55, support block 551, guide rod 552, spring 553, baffle 554, first time relay 6, second time relay 7, third time relay 8, Four time relays 9, controller 10, vent pipe 11, third switch valve 111, drive device 12, motor 121, drum 122, pull rope 123, first sensor 13, second sensor 14, bracket 15, chute 151 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1 to 3, a transformer fault diagnosis device, including:

combustion vessel 1;

The igniter 2, one end of several spark plugs on the igniter 2 is arranged in the combustion container 1;

The intake pipe 3 is connected to the combustion container 1 and the joint pipe between the transformer cover and the oil conservator, and the intake pipe 3 is provided with a first on-off valve 31;

The vacuum pump 4 is connected to the combustion container 1, and a second switch valve 41 is provided on a hose of the vacuum pump 4;

The monitoring device 5 is used to feedback the pressure change in the combustion container 1 before and after the combustion of the combustible gas in the combustion container 1;

The first time relay 6, the second time relay 7, the third time relay 8 and the fourth time relay 9;

controller 10;

The ventilation pipe 11 is provided on the combustion vessel 1 , and a third on-off valve 111 is provided on the ventilation pipe 11 . In the present invention, when in use, when the preset value of the first time relay 6 is reached, the first time relay 6 sends a signal to the controller 10, and the controller 10 controls the second switch valve 41 to open, and simultaneously controls the vacuum pump 4 and the second switch valve 41 to open. The time relay 7 works, the vacuum pump 4 draws out part of the air in the combustion container 1, when the second time relay 7 reaches the preset value, the second time relay 7 sends a signal to the controller 10, and the controller 10 controls the second switch valve 41 Turn off and control the vacuum pump 4 to stop working, the controller 10 controls the first switch valve 31 to open and controls the third time relay 8 to work, because the internal pressure of the combustion container 1 is lower than the outside, the gas in the connecting pipe between the transformer tank cover and the oil conservator flows to The combustion vessel 1, when the third time relay 8 reaches the preset value, sends a signal to the controller 10, the controller 10 controls the first switch valve 31 to close, and the controller 10 controls the fourth time relay 9 and the igniter 2 to work and ignite Several spark plugs on the igniter 2 are ignited to burn the gas inside the combustion container 1. When the fourth time relay 9 reaches the preset value, a signal is sent to the controller 10, and the controller 10 controls the igniter 2 to stop working and controls the first time The relay 6 and the monitoring device 5 work, and the third switch valve 111 is controlled to open at the same time. Due to the consumption of oxygen by gas combustion, the pressure in the combustion container 1 becomes smaller, and the pressure change is reflected to the external personnel through the monitoring device 5. When the first time relay 6 When the preset value of t is reached, the first time relay 6 sends a signal to the controller 10, the controller 10 controls the second switch valve 41 to open, controls the third switch valve 111 to close, and simultaneously controls the vacuum pump 4 and the second time relay 7 to work, By repeating the above operations, the monitoring device 5 repeatedly feeds back the pressure changes in the combustion container 1 to the staff, and the staff can diagnose whether the transformer is faulty by observing the difference in pressure changes in the combustion container 1 . Specifically, the igniter 2 is a conventional igniter on the market, which includes a power supply, an ignition coil, a distributor, an ignition switch, a spark plug, an additional resistor and its short-circuit device, and high and low voltage wires; the combustion container 1 is a metal container.

As a preferred embodiment of the present invention, it can also have the following additional technical features:

In this embodiment, the monitoring device 5 includes a conduit 51 , a piston 52 , a guide rod 53 , a camera 54 and a buffer device 55 . The conduit 51 is arranged on the combustion container 1 , the piston 52 can slide in the conduit 51 , and the guide rod 53 is provided with a One end of the scale is connected to the piston 52 , the camera 54 is used to photograph the position of the guide rod 53 after the movement of the guide rod 53 relative to the guide tube 51 , and the buffer device 55 is used to drive the guide rod 53 to return to its original position. Specifically, the monitoring device 5 further includes a GPRS module, and the guide rod 53 is provided with a scale. When the fourth time relay 9 reaches the preset value, a signal is sent to the controller 10, and the controller 10 controls the igniter 2 to stop working, and controls the first time relay 9 to stop working. When the time relay 6 and the camera 54 work, the pressure in the combustion vessel 1 decreases due to the combustion of the gas and consumes oxygen, and the piston 52 moves to the left in the guide tube 51. When the piston 52 stops moving, the scale on the guide rod 53 is connected to one end of the guide tube 51. For this, the camera 54 takes a photo and transmits the data through the GPRS module. When the third switch valve 111 is opened, the pressure inside the combustion vessel 1 is the same as the outside, and the buffer device 55 drives the guide rod 53 back to its original position.

In this embodiment, the buffer device 55 includes two support blocks 551, two guide rods 552, two springs 553 and a baffle 554. The guide rods 552 are arranged on the support blocks 551, and the springs 553 are sleeved on the guide rods 552. The shutter 554 is slidable on the guide rod 552 . Specifically, the support block 551 is disposed on the conduit 51 .

In this embodiment, the air intake pipe 3 includes a first air pipe 32 and a second air pipe 33, and the first air pipe 32 and the second air pipe 33 are detachably connected; it also includes a driving device 12, a first sensor 13, a second sensor 14 and a bracket 15. The driving device 12 is used to drive the combustion container 1 to move back and forth on the support 15. The first sensor 13 and the second sensor 14 are arranged on the support 15. When the gas in the combustion container 1 burns, the driving device 12 drives the combustion container 1. Away from the first gas pipe 32, when the first on-off valve 31 or the combustion vessel 1 is damaged, the gas in the first gas pipe 32 will not be ignited. Specifically, the camera 54 is arranged on the bracket 15 .

In this embodiment, the first trachea 32 is chamfered into a truncated cone shape, which facilitates the insertion of the first trachea 32 into the second trachea 33 .

In this embodiment, a plurality of sliding blocks 101 are provided at the bottom of the combustion container 1 , at least two sliding grooves 151 are provided on the bracket 15 , and the sliding blocks 101 are matched with the sliding grooves 151 .

In this embodiment, the driving device 12 includes two motors 121 , two drums 122 and two sections of pulling ropes 123 , the drums 122 are arranged on the output end of the motors 121 , and the pulling ropes 123 connect the drum 122 and the combustion vessel 1 . When the third time relay 8 reaches the preset value, it sends a signal to the controller 10, the controller 10 controls the first switch valve 31 to close, the controller 10 controls the fourth time relay 9, the igniter 2 and one of the motors 121 to work, wherein One motor 121 tightens the pull rope 123, and the other motor 121 releases the pull rope 123 to keep the combustion container 1 away from the first gas pipe 32. When the first sensor 13 senses the combustion container 1, it sends a signal to the controller 10 to control the work. The motor 121 stops working. When the fourth time relay 9 reaches the preset value, it sends a signal to the controller 10, and the controller 10 controls another motor 121 to work to tighten the pull rope 123. Before the working motor 121 released the pull rope 123, the burning The second gas pipe 33 on the container 1 is connected to the first gas pipe 32. When the second sensor 14 senses the combustion container 1, it sends a signal to the controller 10 to control the working motor 121 to stop working.

It should be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also no Other elements expressly listed, or which are also inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. a transformer fault diagnosis device, is characterized in that, comprises: combustion vessel (1); An igniter (2), wherein one end of several spark plugs on the igniter (2) is arranged in the combustion container (1); an air intake pipe (3), connecting the combustion container (1) and the joint pipe between the transformer tank cover and the oil conservator, and a first on-off valve (31) is arranged on the air intake pipe (3); a vacuum pump (4), connected to the combustion container (1), a second on-off valve (41) is provided on a hose of the vacuum pump (4); a monitoring device (5) for feeding back the pressure change in the combustion container (1) before and after the combustion of the combustible gas in the combustion container (1); a first time relay (6), a second time relay (7), a third time relay (8) and a fourth time relay (9); controller (10); A ventilation pipe (11) is arranged on the combustion container (1), and a third on-off valve (111) is arranged on the ventilation pipe (11). 2. A transformer fault diagnosis device according to claim 1, characterized in that: the monitoring device (5) comprises a conduit (51), a piston (52), a guide rod (53), a camera (54) and a buffer The device (55), the conduit (51) is arranged on the combustion vessel (1), the piston (52) can slide in the conduit (51), and the guide rod (53) is provided with a scale One end is connected with the piston (52), the camera (54) is used for photographing the position of the guide rod (53) after moving relative to the conduit (51), and the buffer device (55) is used for driving the The guide rod (53) returns to its original position. 3 . The transformer fault diagnosis device according to claim 2 , wherein the buffer device ( 55 ) comprises two support blocks ( 551 ), two guide rods ( 552 ), and two springs ( 553 ). 4 . and a baffle (554), the guide rod (552) is arranged on the support block (551), the spring (553) is sleeved on the guide rod (552), the baffle (554) It can slide on the guide rod (552). 4. A transformer fault diagnosis device according to claim 1, characterized in that: the intake pipe (3) comprises a first gas pipe (32) and a second gas pipe (33), and the first gas pipe (32) and the second trachea (33) are detachably connected; it also includes a driving device (12), a first sensor (13), a second sensor (14) and a bracket (15), the driving device (12) is used to drive all The combustion vessel (1) moves back and forth on the support (15), and the first sensor (13) and the second sensor (14) are arranged on the support (15). 5 . The transformer fault diagnosis device according to claim 4 , wherein the first gas pipe ( 32 ) is in the shape of a truncated cone after chamfering. 6 . 6 . The transformer fault diagnosis device according to claim 4 , wherein a plurality of sliders ( 101 ) are arranged at the bottom of the combustion container ( 1 ), and at least two sliders ( 101 ) are arranged on the support ( 15 ). 7 . Chute (151). 7 . The transformer fault diagnosis device according to claim 4 , wherein the driving device ( 12 ) comprises two motors ( 121 ), two rotating drums ( 122 ) and two sections of pulling ropes ( 123 ). 8 . , the rotating drum (122) is arranged on the output end of the motor (121), and the pulling rope (123) connects the rotating drum (122) and the combustion container (1).

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