CN214097664U

CN214097664U - A Transformer Internal Fault Monitoring System

Info

Publication number: CN214097664U
Application number: CN202023348021.2U
Authority: CN
Inventors: 郑宏; 聂明军; 鲍美军; 李孟; 赵阿龙; 卢衍泓; 詹江扬; 杨智; 郑一鸣; 周建平; 周国伟
Original assignee: Hangzhou Kelin Electric Co ltd; State Grid Zhejiang Electric Power Co Ltd
Current assignee: Hangzhou Kelin Electric Co ltd; State Grid Zhejiang Electric Power Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an internal fault monitoring system of a transformer. It belongs to the technical field of transformer internal fault monitoring equipment, has remote monitoring and management capabilities, and can use the gas generated by the burnout of the substation components in the transformer oil tank to remotely monitor and manage the fault horizontal coordinate position, fault type and fault severity in the transformer. The airtight box is set above the transformer oil tank, the air inlet end of the gas color observation mechanism is connected to the upper nozzle of the No. 1 vertical pipe, the gas odor detection mechanism is set in the gas color observation mechanism, and the gas volume detection mechanism is set in the gas color observation mechanism. In the mechanism, the intake end of the gas flammability detection mechanism is connected to the side wall exhaust hole of the No. 1 vertical pipe, and the bubble horizontal coordinate positioning detection mechanism is arranged in the transformer oil tank.

Description

Transformer internal fault monitoring system

Technical Field

The utility model relates to a transformer internal fault monitoring technology field, concretely relates to transformer internal fault monitoring system.

Background

When a circuit in a transformer oil tank breaks down, high-temperature electric arcs generated by short-circuit current of the circuit can cause the decomposition of transformer oil to generate gas, and power transformation components at the electric arcs can be burnt or burnt to generate gas. In addition, leakage from the transformer tank can allow air to enter the transformer tank, and the air can collect at the top of the transformer tank. The space occupied by the transformer oil in the transformer is inevitably occupied by more gas accumulated at the top in the transformer oil tank, so that the transformer oil in the transformer oil tank is reduced. After transformer oil in the transformer oil tank is reduced or degenerated, the cooling effect, the insulating effect, the arc extinction effect and the liquid seal effect of the transformer oil on the transformer can be influenced, and after the transformer oil in the transformer oil tank is reduced or degenerated seriously, the transformer can not be well protected in the using process, so that the transformer breaks down.

At present, the approximately horizontal position of the damage position of a power transformation component in a transformer oil tank cannot be determined in the remote monitoring of the transformer fault; at present, the roughly horizontal position of the burning position of the power transformation component in the transformer oil tank can be known only when the power transformation component is taken out of the oil tank on site for inspection, and the roughly horizontal position of the burning position of the power transformation component in the transformer oil tank cannot be remotely determined.

At present, gas generated due to faults in the transformer oil tank is generally discharged by arranging an exhaust valve at the top of the transformer oil tank, but the remote monitoring and management of the faults in the transformer oil tank are not generally carried out by utilizing the gas discharged from the transformer oil tank at present.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve and not yet utilize at present and come to carry out the not enough of remote monitoring management to transformer fault from transformer tank interior exhaust gas, provide one kind and have remote monitoring manageability, can realize gaseous self-bleeding in the transformer tank, can utilize the gas that transformer part burns out the production of department to come to carry out remote monitoring management to the trouble horizontal coordinate position in the transformer, the fault type, the trouble severity of transformer tank, high reliability's a transformer internal fault monitoring system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a transformer internal fault monitoring system comprises a transformer oil conservator, a transformer oil tank, a power transformation component hermetically arranged in the transformer oil tank, and a power input column and a power output column, wherein the lower end of the power input column and the lower end of the power output column are respectively connected to the left side and the right side of the upper end of the power transformation component and are arranged oppositely, and the lower end of the power input column and the lower end of the power output column are both hermetically arranged in the transformer oil tank; the device also comprises a transformer fault monitoring platform, a controller, a gas collection fault detection triggering mechanism, a gas color observation mechanism, a gas smell detection mechanism, a gas volume detection mechanism, a gas flammability detection mechanism, a bubble horizontal coordinate positioning detection mechanism, a memory, a wireless module and a first vertical pipe provided with a first one-way electromagnetic valve;

the gas collection fault detection triggering mechanism comprises a sealed box filled with transformer oil; an upper box hole is formed in the upper box wall of the seal box, and the lower end of the outer pipe wall of the first vertical pipe is fixedly connected in the upper box hole in a sealing mode; a side wall exhaust hole is formed in the side pipe wall of the first vertical pipe above the first one-way electromagnetic valve;

the gas odor detection mechanism is arranged in the gas color observation mechanism, the gas volume detection mechanism is arranged in the gas color observation mechanism, the gas inlet end of the gas flammability detection mechanism is connected to the side wall exhaust hole of the first vertical pipe, and the bubble horizontal coordinate positioning detection mechanism is arranged in the transformer oil tank;

the bubble horizontal coordinate positioning detection mechanism comprises a plurality of laser lamps and a plurality of photoelectric sensors which are equal to the laser lamps in number and are arranged one to one; the laser emitted by each laser lamp can be detected one-to-one by the corresponding photoelectric sensor, and a plurality of laser beams emitted by a plurality of laser lamps are arranged in a crisscross manner, so that a horizontally arranged optical network is formed in the transformer oil tank above the power transformation component by the plurality of laser beams arranged in the crisscross manner; the central line of each light beam of the optical network is in the same horizontal plane, so that the optical network is horizontally arranged by a plurality of criss-cross light beams, and the position of the cross point of any two light beams in the optical network in a two-dimensional coordinate plane can be uniquely determined;

the bubble horizontal coordinate positioning detection mechanism also comprises an address encoder which is respectively bound with each photoelectric sensor;

the control end of the first one-way electromagnetic valve, the control end of the gas collection fault detection triggering mechanism, the control end of the gas color observation mechanism, the control end of the gas smell detection mechanism, the control end of the gas volume detection mechanism, the control end of the gas flammability detection mechanism, the control end of the bubble horizontal coordinate positioning detection mechanism, each photoelectric sensor, each address encoder, the memory and the wireless module are respectively connected with the controller; the controller is wirelessly connected with the transformer fault monitoring platform through the wireless module.

When gas is generated in the transformer oil tank, the gas enters the top of the sealing box from the transformer oil tank through the box oil outlet pipe, the more the gas is collected at the top of the sealing box, the more the gas is collected at the upper surface of the transformer oil in the sealing box, the more the gas is, the larger the extrusion force is; when the gas pressure in the sealed box reaches the set pressure, the gas collection fault detection triggering mechanism is triggered, then the triggering information is uploaded to the transformer fault monitoring platform under the control of the controller, the staff of the transformer fault monitoring platform can control the gas collection fault detection triggering mechanism to perform fault detection on the gas collection fault detection gas,

detecting whether the transformer leaks oil or not by using a gas collection fault detection triggering mechanism to obtain oil leakage information, observing the color of gas generated in a transformer oil tank by using a gas color observation mechanism to obtain gas color information, detecting the smell of the gas generated in the transformer oil tank by using a gas smell detection mechanism to obtain gas smell information, detecting the volume of the gas generated in the transformer oil tank by using a gas volume detection mechanism to obtain the size information of the total gas volume, detecting the combustibility of the gas generated in the transformer oil tank by using a gas flammability detection mechanism to obtain the combustible information of the gas and the flame temperature information of the gas, and detecting the horizontal coordinate of bubbles generated in the transformer oil tank by using a bubble horizontal coordinate positioning detection mechanism to obtain horizontal position information and quantity information of the bubbles;

the controller uploads oil leakage information, gas color information, gas smell information, total gas quantity information, information on whether gas can be combusted or not, gas flame temperature information, liquid color information, bubble horizontal position information and bubble quantity information to a transformer fault monitoring platform by virtue of the wireless module, and workers at the end of the transformer fault monitoring platform can manage transformer faults according to the information transmitted from the controller;

the serious oil leakage condition of the transformer can be known according to the oil leakage information;

the serious condition of the transformer fault can be known according to the information of the total gas quantity;

if the gas is colorless, odorless, incombustible and flameless, the gas at the top in the seal box is air, so that the failure of untight sealing of the transformer oil tank is indicated; if the gas quantity at the moment is large, the sealing problem of the transformer is serious, and if the gas quantity at the moment is small, the sealing problem of the transformer is not serious;

if the gas is yellow, odorless, combustible and low in gas flame temperature, the gas at the top in the seal box is generated due to wood faults inside the transformer oil tank, and therefore the wood parts inside the transformer oil tank are in faults; if the gas quantity is large, the fault of the wooden part in the transformer oil tank is serious, and if the gas quantity is small, the fault of the wooden part in the transformer oil tank is not serious; the wood fault detection method can roughly judge which part of the wood on the power transformation component in the transformer oil tank has the fault according to the horizontal position information of the bubbles, and can judge the severity of the fault at the part of the wood according to the bubble amount information;

if the gas is light gray, the gas has odor, the gas can be burned, and the gas flame temperature is high, and if so, the gas at the top in the seal box is the gas generated due to paper faults in the transformer oil tank, so that the fault of the paper part in the transformer oil tank is shown; if the gas quantity is large, the fault of the paper part in the transformer oil tank is serious, and if the gas quantity is small, the fault of the paper part in the transformer oil tank is not serious; the method can roughly judge which part of paper on the power transformation component in the transformer oil tank has a fault according to the bubble horizontal position information, and can judge the severity of the fault at the part of paper according to the bubble amount information;

if the gas is grey black, odorless, combustible and high in gas flame temperature, the gas at the top in the sealing box is gas generated by decomposing insulating oil due to iron fault in the transformer oil tank, so that the iron part in the transformer oil tank is proved to have fault; if the gas quantity is large, the fault of the iron part in the transformer oil tank is serious, and if the gas quantity is small, the fault of the iron part in the transformer oil tank is not serious; and can roughly judge which part of iron on the internal power transformation component of the transformer oil tank has a fault according to the bubble horizontal position information, and can judge the severity of the part of iron having a fault according to the bubble amount information.

The scheme has the remote monitoring and management capability, can realize the automatic exhaust of gas in the transformer oil tank, can utilize the gas generated in the transformer oil tank to carry out remote monitoring and management on the fault horizontal coordinate position, the fault type and the fault severity of the damage position of the transformer component in the transformer oil tank, can remotely check whether transformer oil is deteriorated or not, and is convenient and simple to use and good in reliability.

Preferably, the first one-way solenoid valve is fixedly arranged at the upper end in the first vertical pipe.

Preferably, the tank oil inlet hole of the seal tank is arranged below the tank oil outlet hole of the seal tank; the box inlet port of seal box and the case oil outlet of seal box all set up on the right tank wall of seal box, are equipped with the baffle in the seal box between the case inlet port of seal box and the case oil outlet of seal box, and airtight fixed connection is on the preceding tank wall in the seal box, on the back tank wall and on the right tank wall respectively to preceding terminal surface, rear end face and the right-hand member face of baffle, and the left end face of baffle and the left tank wall interval arrangement of seal box.

Preferably, the gas collection fault detection triggering mechanism further comprises a tank oil inlet hole arranged at the lower end of the right tank wall of the seal tank, and a tank oil outlet hole arranged at the upper end of the right tank wall of the seal tank; the oil outlet of the transformer oil conservator is higher than the upper end face of the seal box, and the oil inlet of the transformer oil tank is lower than the lower end face of the seal box; the inner top surface of the upper box wall of the seal box is an upwardly arched spherical wall surface, and the oil outlet hole of the seal box is positioned in the center of the upper box wall; the lower pipe orifice of the first vertical pipe is aligned with the lower orifice of the upper box hole; a tension sensor is fixedly arranged on the lower surface of the one-way electromagnetic valve I, and a buoyancy ball capable of floating on transformer oil is also arranged in the seal box; the upper end of a first spring is fixedly connected to a drag hook of the tension sensor, the lower end of the first spring is fixedly connected to the buoyancy ball, the upper surface of the buoyancy ball is just in contact with and closely pressed on the lower pipe orifice of the first vertical pipe when the first spring is in a vertical natural length state, and the tension sensor detects that the tension of the buoyancy ball is zero; the tension sensor is connected with the controller.

Preferably, a plurality of notches are arranged on the inner side edge of the lower pipe opening of the first vertical pipe.

When the upper surface of the buoyancy ball is pressed on the lower pipe orifice of the first vertical pipe through the notch, gas and transformer oil can pass through the notch.

Preferably, the gas color observation mechanism includes: the lower pipe orifice of one transparent vertical glass pipe is in butt joint connection with the upper pipe orifice of the first vertical pipe, and a sealing slide block is arranged in the transparent vertical glass pipe in a sealing and up-and-down sliding manner; thereby forming a gas color observation cavity in the cavity of the transparent vertical glass tube between the one-way electromagnetic valve I and the sealing slide block; the cover opening of a light shield is hermetically connected to the outer surface of the upper box wall of the sealing box, and the transparent vertical glass tube is sealed in the light shield; a background cloth A is arranged in a light shield positioned at the right side of the transparent vertical glass tube, and a first camera is arranged in a light shield positioned at the left side of the transparent vertical glass tube; an illuminating lamp is arranged in the lens hood; the control end of the illuminating lamp and the control end of the first camera are respectively connected with the controller.

Preferably, the gas smell detection mechanism comprises a smell detection sensor, the smell detection sensor is arranged in a gas color observation cavity positioned at the first one-way solenoid valve, and the smell detection sensor is connected with the controller.

Preferably, the gas volume detection mechanism includes: a distance measuring sensor for detecting the height position of the sealing slide block is downwards arranged at the upper end in the transparent vertical glass tube, and a limiting block is fixedly arranged on the inner wall of the transparent vertical glass tube below the distance measuring sensor; the distance measuring sensor is connected with the controller.

Preferably, the light shield is provided with a vent hole, and a dustproof filter sponge is arranged in the vent hole.

The arrangement of the vent hole on the light shield enables the sealing slide block to freely slide up and down, and the reliability is good.

Preferably, the gas flammability detecting means includes: an air inlet of an ignition detection air guide pipe provided with a second one-way electromagnetic valve is hermetically, fixedly and butt-jointed with an exhaust hole on the side wall of the first vertical pipe; an ignition device capable of remotely controlling ignition is arranged at one side of the air outlet of the ignition detection air duct, and the ignition device can ignite combustible gas sprayed out of the air outlet of the ignition detection air duct; a second camera is arranged above the side of the air outlet of the ignition detection air guide pipe; the gas outlet of the ignition detection gas-guide tube is arranged upwards, and a temperature sensor is arranged above the gas outlet of the ignition detection gas-guide tube; the control end of the second one-way electromagnetic valve, the control end of the ignition device, the second camera and the temperature sensor are respectively connected with the controller.

Preferably, a wind shield with an upper opening and a lower opening is arranged above the ignition device, an air outlet of the ignition detection air duct is arranged in the lower opening of the wind shield, and a rain shield is arranged on the outer wall of the wind shield above the wind shield; ignition, No. two cameras and temperature sensor all set up in the fan housing.

The wind shield is convenient for ignition detection of gas and has good reliability.

Preferably, a metal heat-conducting net is arranged right above the air outlet of the ignition detection air duct, and the temperature detection end of the temperature sensor is connected to the metal heat-conducting net.

The temperature sensor is matched with the metal heat-conducting net, so that the flame size can be better detected, and the reliability is good.

Preferably, the bubble horizontal coordinate positioning detection mechanism includes: a first square reflecting ring is fixedly sleeved on a power input column positioned in a transformer oil tank, and a second square frame-shaped reflecting ring is fixedly sleeved on a power output column positioned in the transformer oil tank;

the first reflecting ring is formed by sequentially connecting and enclosing a first upper left reflecting plate, a first lower right reflecting plate and a first upper right reflecting plate which are completely equal in length; the second reflecting ring is formed by sequentially connecting and encircling a second upper left reflecting plate, a second lower right reflecting plate and a second upper right reflecting plate which are completely equal in length;

the length of the first upper left reflector, the length of the first lower right reflector, the length of the first upper right reflector, the length of the second upper left reflector, the length of the second lower right reflector and the length of the second upper right reflector are all completely equal; therefore, the first reflective ring and the second reflective ring are both the reflective rings which have the same structure and the same size and are in the shape of a square frame; the first reflecting ring and the second reflecting ring are both positioned right above the power transformation component, and are arranged in a left-right horizontal opposite manner;

the left corner vertex of the first reflective ring, the right corner vertex of the first reflective ring, the left corner vertex of the second reflective ring and the right corner vertex of the second reflective ring are all located on the same horizontal straight line; so that the included angle between the plane of the reflecting surface of the first lower right reflecting plate and the plane of the reflecting surface of the second lower left reflecting plate is a right angle; an included angle between the plane of the reflecting surface of the first upper right reflector and the plane of the reflecting surface of the second upper left reflector is a right angle;

a plurality of first right lower retroreflective patches perpendicular to the reflective surface of the first right lower reflective plate are fixedly arranged on the reflective surface of the first right lower reflective plate at equal intervals, and the reflective surface of the first right lower retroreflective patch is arranged forwards;

a plurality of first upper right retroreflective sheets perpendicular to the reflective surface of the first upper right reflector are fixedly arranged on the reflective surface of the first upper right reflector at equal intervals, and the reflective surface of the first upper right retroreflective sheet is arranged backwards;

a plurality of second left lower retroreflective patches perpendicular to the reflective surface of the second left lower reflective panel are fixedly arranged on the reflective surface of the second left lower reflective panel at equal intervals, and the reflective surface of the second left lower retroreflective patches is arranged forwards;

a plurality of second upper left retroreflective sheets perpendicular to the reflective surface of the second upper left reflector are fixedly arranged on the reflective surface of the second upper left reflector at equal intervals, and the reflective surface of the second upper left retroreflective sheet is arranged backwards;

the plurality of laser lamps comprise a plurality of left laser lamps, a plurality of front laser lamps and a plurality of rear laser lamps; the plurality of photoelectric sensors comprise a plurality of right photoelectric sensors, a plurality of front photoelectric sensors and a plurality of rear photoelectric sensors;

a plurality of left laser lamps which irradiate horizontally and directionally towards the right are horizontally arranged on the left box wall in the transformer oil tank at intervals, and a plurality of right photoelectric sensors are horizontally arranged on the right box wall in the transformer oil tank at intervals;

a plurality of front laser lamps which irradiate horizontally and directionally backwards are horizontally arranged on the wall of the front tank in the transformer oil tank at intervals, and a plurality of front photoelectric sensors are also horizontally arranged on the wall of the front tank in the transformer oil tank at intervals;

a plurality of rear laser lamps which irradiate horizontally forward are horizontally arranged on the wall of a rear tank in the transformer oil tank at intervals, and a plurality of rear photoelectric sensors are also horizontally arranged on the wall of the rear tank in the transformer oil tank at intervals;

the left laser lamp, the right photoelectric sensor, the front laser lamp, the front photoelectric sensor, the rear laser lamp, the rear photoelectric sensor, the first reflecting ring, the second reflecting ring, the first lower right retroreflective sheet, the first upper right retroreflective sheet, the second lower left retroreflective sheet and the second upper left retroreflective sheet are all positioned on the same horizontal plane;

a light beam emitted by any one left laser lamp can be detected one-to-one by a right photoelectric sensor or can be detected one-to-one by a front photoelectric sensor after being reflected by a first lower left reflector or can be detected one-to-one by a rear photoelectric sensor after being reflected by a first upper left reflector;

a light beam emitted by any one front laser lamp can be detected by a right photoelectric sensor one to one after being reflected by a second right lower reflector, or can be detected by a front photoelectric sensor one to one after being reflected by a first right lower reflector and a second left lower reflector in sequence, or can be detected by a front photoelectric sensor one to one after being reflected by a first right lower back reflector and a first right lower reflector in sequence, or can be detected by a front photoelectric sensor one to one after being reflected by a second right lower back reflector and a second right lower reflector in sequence, or can be detected by a back photoelectric sensor one to one;

a light beam emitted by any one rear laser lamp can be detected one-to-one by a right photoelectric sensor after being reflected by a second upper right reflector, or can be detected one-to-one by a rear photoelectric sensor after being reflected by a first upper right reflector and a second upper left reflector in sequence, or can be detected one-to-one by a rear photoelectric sensor after being reflected by a first upper right retroreflection sheet and a first upper right reflector in sequence, or can be detected one-to-one by a rear photoelectric sensor after being reflected by a second upper left retroreflection sheet and a second upper left reflector in sequence;

each right photoelectric sensor, each front photoelectric sensor and each rear photoelectric sensor are respectively connected with the controller.

Preferably, the first upper left reflector can only be irradiated by a left laser lamp arranged right and left of the first upper left reflector in a horizontal and right directional manner, and any light beam irradiated on the first upper left reflector can only be detected one-to-one by a rear photoelectric sensor arranged in front of and behind the first upper left reflector after being reflected by the first upper left reflector;

the first lower left reflector can only be irradiated by a left laser lamp arranged right and left of the first lower left reflector, and any light beam irradiated on the first lower left reflector can only be detected one-to-one by a front photoelectric sensor arranged right in front of the first lower left reflector after being reflected by the first lower left reflector;

the first right lower reflector can only be irradiated by a front laser lamp arranged right in front of the first right lower reflector in a horizontal backward directional manner, any light beam irradiated on the first right lower reflector is firstly reflected to the second left lower reflector through the first right lower reflector, and then reflected by the second left lower reflector, and can only be detected one-to-one by a front photoelectric sensor arranged right in front of the second left lower reflector;

any one first right lower retroreflective sheet can only be irradiated in a horizontal backward direction by a front laser lamp arranged right in front of the first right lower retroreflective sheet, and laser irradiated on the first right lower retroreflective sheet is reflected to the first right lower retroreflective sheet after being reflected by the first right lower retroreflective sheet, and is detected one by a front photoelectric sensor arranged right in front of the first right lower retroreflective sheet after being reflected by the first right lower retroreflective sheet;

the first upper right reflector can only be horizontally and directionally irradiated forward by a rear laser lamp arranged right behind the first upper right reflector, any light beam irradiated on the first upper right reflector is firstly reflected to the second upper left reflector by the first upper right reflector, and can only be detected one-to-one by a rear photoelectric sensor arranged right behind the second upper left reflector after being reflected by the second upper left reflector;

any one first upper right retroreflective sheet can only be horizontally and forwardly directionally irradiated by a rear laser lamp arranged right behind the first upper right retroreflective sheet, and laser irradiated on the first upper right retroreflective sheet is reflected to the first upper right retroreflective sheet after being reflected by the first upper right retroreflective sheet and is detected one by a rear photoelectric sensor arranged right behind the first upper right retroreflective sheet after being reflected by the first upper right retroreflective sheet;

any one second left lower retroreflective sheet can only be irradiated in a horizontal backward direction by a front laser lamp arranged right in front of the second left lower retroreflective sheet, and laser irradiated on the second left lower retroreflective sheet is reflected to the second left lower retroreflective sheet after being reflected by the second left lower retroreflective sheet, and is detected one by a front photoelectric sensor arranged right in front of the second left lower retroreflective sheet after being reflected by the second left lower retroreflective sheet;

any one second upper left retroreflective sheet can only be horizontally and forwardly directionally irradiated by a rear laser lamp arranged right behind the second upper left retroreflective sheet, and laser irradiated on the second upper left retroreflective sheet is reflected to the second upper left retroreflective sheet after being reflected by the second upper left retroreflective sheet and is detected one-to-one by a rear photoelectric sensor arranged right behind the second upper left retroreflective sheet after being reflected by the second upper left retroreflective sheet;

the second lower right reflector can only be irradiated by a front laser lamp arranged right in front of the second lower right reflector in a horizontal backward directional manner, and any light beam irradiated on the second lower right reflector can only be detected one-to-one by a right photoelectric sensor arranged right below the second lower right reflector after being reflected by the second lower right reflector;

no. two upper right reflectors can only receive the level that sets up the back laser lamp that is located this No. two upper right reflectors under back and directionally shine forward to arbitrary a light beam that shines on No. two upper right reflectors can only be set up a right photoelectric sensor one-to-one that is located this No. two upper right reflectors positive right sides and detects after No. two upper right reflectors reflect.

Preferably, the sealing box is internally provided with a partition board, the front end face, the rear end face and the right end face of the partition board are respectively and fixedly connected to the front box wall, the rear box wall and the right box wall in the sealing box in a sealing mode, the left end face of the partition board and the left box wall of the sealing box are arranged at intervals, the right end face of the partition board is fixedly connected to the right box wall between the box oil outlet hole and the box oil inlet hole in a sealing mode, and the partition board is obliquely arranged from left to right and upwards.

The arrangement of the partition plate enables gas entering from the oil conservator to be difficult to enter the transformer oil tank, and gas generated from the transformer oil tank is also difficult to enter the oil conservator, so that more gas can be collected in the seal box, and the subsequent detection and analysis of collected gas components are facilitated.

Preferably, according to a control method of the transformer internal fault monitoring system, the control method comprises the following steps:

when gas is generated in the transformer oil tank, the gas enters the top of the sealed tank from the inside of the transformer oil tank through the tank oil outlet pipe, the more the gas is gathered at the top of the sealed tank, the downward extrusion force of the gas is applied to the upper surface of the transformer oil in the sealed tank, the more the gas is gathered at the upper surface of the transformer oil in the sealed tank, the larger the extrusion force of the gas is, the lower the transformer oil is applied to the upper surface of the transformer oil in the sealed tank after the extrusion force of the gas is applied, and the lowered transformer oil enters the transformer conservator through the tank oil inlet pipe;

the buoyancy ball floats on the upper surface of the transformer oil, and the height of the position of the buoyancy ball can be changed along with the height of the upper surface of the transformer oil; the height of the upper surface of the transformer oil in the seal box can be known according to the tension detected by the tension sensor, and the existence of gas at the top in the seal box is also known;

when the pulling force detected by the pulling force sensor is above a set value H1, the controller immediately sends an alarm signal to the transformer fault monitoring platform, and a worker at the transformer fault monitoring platform end can send an instruction to the controller through remote control;

under the control of the controller, the first one-way electromagnetic valve is opened, the second one-way electromagnetic valve is closed, and gas at the top in the sealing box enters the color observation cavity of the transparent vertical glass tube;

when the tension sensor detects that the tension of the buoyancy ball is always greater than zero within a set time and the tension is unchanged within the set time, the upper surface of the transformer oil in the transformer conservator is lower than the upper surface of the seal box, the problem of oil leakage of the transformer is solved, and oil leakage information is obtained;

when the tension sensor detects that the tension of the buoyancy ball is equal to zero, the distance measuring sensor is used for measuring the height position of the sealing sliding block to obtain the capacity of the color observation cavity, and further the information of the total gas quantity generated by the transformer fault is obtained;

then, the first one-way electromagnetic valve is closed, the second one-way electromagnetic valve is still in a closed state at the moment, the illuminating lamp is turned on, and a worker can observe or shoot the color of the gas in the color observation cavity through the first camera to obtain gas color information; meanwhile, the odor detection sensor is used for detecting the odor of the gas in the color observation cavity to acquire gas odor information;

then opening a second one-way electromagnetic valve, keeping the first one-way electromagnetic valve in a closed state, and enabling an ignition device to ignite the gas sprayed out of the gas outlet of the ignition detection gas guide tube,

the staff can observe or shoot the flame through the second camera to obtain gas combustion information, and meanwhile, the temperature sensor is used for detecting the size of the flame to obtain gas flame temperature information; the flow velocity of the gas sprayed out of the gas outlet of the ignition detection gas guide pipe is uniform due to the action of the sealing slide block, and the temperature detected by the temperature sensor is high, so that the flame of the ignited gas is high, and the gas is easy to burn; the temperature detected by the temperature sensor indicates that the flame after the gas is ignited is small, and the gas is not easy to burn;

the working personnel can start the oil pumping circulator under the control of the controller, stop the oil pumping circulator after the transformer oil in the transformer oil tank circulates for a set time through the oil pumping circulator, then turn on the LED lamp, and observe or shoot the transformer oil in the transparent pipe A and the transformer oil in the transparent pipe B through the camera A to obtain the color information of the liquid;

when bubbles moving upwards from the lower part of the optical network pass through the optical network, at least two light beams passing through the bubbles are refracted to change the propagation direction of the corresponding light beams, so that the corresponding light beams passing through the bubbles cannot be detected by the corresponding photoelectric sensors;

any two crossed beams cannot be detected by the corresponding two photoelectric sensors after being refracted by the bubbles, and the positions of the crossed points of the two beams corresponding to the two photoelectric sensors receiving any two crossed beams can be determined in advance; therefore, if in a certain period of time, as long as two photoelectric sensors receiving any two crossed beams can not detect light, the bubble moves upwards from the intersection point of the two crossed beams in the certain period of time;

if part of the photoelectric sensor can not detect the light beam in the period of time, indicating that a bubble passes through a part of the light beam intersection points of the optical network in the period of time, and further indicating that the bubble is generated in the period of time;

if all the photoelectric sensors can detect the light beams in the period of time, the fact that no air bubbles pass through the optical network in the period of time is indicated, and therefore the fact that no air bubbles are generated in the period of time is indicated;

if the number of photosensors which can detect crossing beams is smaller during this time, it is indicated that the number of beam crossings through which bubbles pass is larger during this time, and conversely,

if the number of the photoelectric sensors capable of detecting the crossed beams is more in the period of time, the number of the beam crossing points through which the bubbles pass is less in the period of time;

if more than two photoelectric sensors detect no two crossed beams for longer time, the bubbles moving upwards are more, and the intersection point position of the two crossed beams is the horizontal coordinate position of the bubbles on the optical network; because the bubbles generated by the failure of the power transformation component of the transformer penetrate into the optical network after moving upwards from the failure position, the horizontal coordinate position of the bubbles on the optical network can be determined, so that the approximately horizontal position of the bubbles generated on the power transformation component can be determined, and the failure position of the power transformation component can be approximately determined; thereby obtaining bubble horizontal position information representing a transformer fault horizontal position;

the severity of the failure of the power transformation component can be roughly judged according to the amount of bubbles; if the duration of the bubbles at the intersection of the two crossed beams is longer or the number of the photoelectric sensors which cannot receive the crossed beams in the period is larger, the bubble amount is large, and further the fault is serious; if the duration of the bubbles at the intersection of the two crossed beams is shorter or the number of the photoelectric sensors which cannot receive the crossed beams in the period is smaller, the bubble amount is small, and further the fault is not serious; thereby obtaining bubble quantity information for marking the severity of the transformer fault;

The utility model discloses can reach following effect:

the utility model discloses have remote monitoring manageability, can realize gaseous self-bleeding in the transformer tank, can utilize the gas that transformer part burns out the production of department in the transformer tank to come to carry out remote monitoring management to trouble horizontal coordinate position, fault type, the trouble severity in the transformer, can long-rangely look over transformer oil whether rotten, convenient to use is simple, the good reliability.

Drawings

Fig. 1 is a schematic view of a connection structure of the embodiment of the present invention in which transformer oil is filled in the inner top of the sealed box, and no gas is present in the inner top of the sealed box.

Fig. 2 is a schematic view of a connection structure in a use state when there is a little gas at the inner top of the sealing box, the upper surface of the transformer oil descends less, and the pulling force received by the tension sensor is still less.

Fig. 3 is a schematic view of a connection structure of an operating state in which more gas is present at the inner top of the seal box, the upper surface of the transformer oil is more lowered, and the tension received by the tension sensor is greater.

Fig. 4 is a schematic view of a connection structure of an application state when the gas at the top of the sealed box of the present invention has completely entered the gas color observation cavity to perform gas color detection and gas smell detection.

Fig. 5 is a schematic view of a connection structure of a usage status of the gas in the gas color observation cavity when the gas outlet of the ignition detection gas guide tube is ignited for measurement according to the embodiment of the present invention.

Fig. 6 is a schematic block diagram of a circuit principle connection structure according to an embodiment of the present invention.

Fig. 7 is a schematic cross-sectional connection structure diagram of a pipe orifice at a first vertical pipe of the present invention.

Fig. 8 is a schematic view of a vertical cross-section connection structure at a pipe opening under a first vertical pipe of the present invention.

Fig. 9 is a schematic view of an elevational connection structure of the bubble horizontal coordinate positioning detection mechanism in the transformer oil tank according to the embodiment of the present invention.

Fig. 10 is a schematic view of a top-down connection structure of an optical network in a transformer tank according to an embodiment of the present invention.

Fig. 11 is a partially enlarged connection structure of the reflective ring No. one in fig. 10.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In an embodiment, a transformer internal fault monitoring system, as shown in fig. 1-11, includes a transformer conservator 42, a transformer oil tank 41, a power transformation component 74 hermetically disposed in the transformer oil tank, and a power input column 71 and a power output column 75, the lower ends of which are respectively connected to the left and right sides of the upper end of the power transformation component and are arranged oppositely, and the lower ends of the power input column and the power output column are both hermetically disposed in the transformer oil tank; the device also comprises a transformer fault monitoring platform 43, a controller 39, a gas collection fault detection triggering mechanism 79, a gas color observation mechanism 97, a gas smell detection mechanism 98, a gas volume detection mechanism 99, a gas flammability detection mechanism 100, a bubble horizontal coordinate positioning detection mechanism 102, a memory 37, a wireless module 38 and a first vertical pipe 5 provided with a first one-way electromagnetic valve 8;

the gas collection fault detection triggering mechanism comprises a sealed box 2 filled with transformer oil 1; an upper box hole 31 is formed in the upper box wall of the seal box, and the lower end of the outer pipe wall of the first vertical pipe is fixedly connected in the upper box hole in a sealing manner; a side wall exhaust hole 35 is formed in the side pipe wall of the first vertical pipe above the first one-way electromagnetic valve;

the sealing box is arranged above the transformer oil tank, a box oil inlet 29 of the sealing box is connected to an oil outlet 32 of a transformer conservator through a box oil inlet pipe 28, a box oil outlet 24 of the sealing box is connected to an oil inlet 33 of the transformer oil tank through a box oil outlet pipe 26, an air inlet end of the gas color observation mechanism is connected to an upper pipe orifice of a vertical pipe, the gas odor detection mechanism is arranged in the gas color observation mechanism, the gas volume detection mechanism is arranged in the gas color observation mechanism, an air inlet end of the gas flammability detection mechanism is connected to a side wall exhaust hole of the vertical pipe, and the bubble horizontal coordinate positioning detection mechanism is arranged in the transformer oil tank;

the bubble horizontal coordinate positioning detection mechanism comprises a plurality of laser lamps and a plurality of photoelectric sensors which are equal to the laser lamps in number and are arranged one to one; the laser emitted by each laser lamp can be detected one-to-one by the corresponding photoelectric sensor, and a plurality of laser beams emitted by a plurality of laser lamps are arranged in a crisscross manner, so that a horizontally arranged optical network is formed in the transformer oil tank above the power transformation component by the plurality of laser beams arranged in the crisscross manner; the central line of each light beam of the optical network is in the same horizontal plane, so that the optical network is a horizontally arranged optical network 96 formed by a plurality of criss-cross light beams, and the position of the intersection point of any two light beams in the optical network in a two-dimensional coordinate plane can be uniquely determined;

the bubble horizontal coordinate positioning detection mechanism also comprises an address encoder 103 which is respectively bound with each photoelectric sensor;

Gas collection fault detection trigger mechanism still includes: the tank oil inlet hole is formed in the lower end of the right tank wall of the seal tank, and the tank oil outlet hole is formed in the upper end of the right tank wall of the seal tank; the oil outlet of the transformer oil conservator is higher than the upper end face of the seal box, and the oil inlet of the transformer oil tank is lower than the lower end face of the seal box; the inner top surface of the upper box wall of the seal box is an upwardly arched spherical wall surface 34, and the oil outlet hole of the seal box is positioned in the center of the upper box wall; the lower pipe orifice of the first vertical pipe is aligned with the lower orifice of the upper box hole;

a tension sensor 7 is fixedly arranged on the lower surface of the one-way electromagnetic valve I, and a buoyancy ball 3 capable of floating on transformer oil is also arranged in the seal box; the upper end of a first spring 4 is fixedly connected to a drag hook 6 of the tension sensor, the lower end of the first spring is fixedly connected to the buoyancy ball, the upper surface of the buoyancy ball is just in contact with and closely pressed on the lower pipe orifice of the first vertical pipe when the first spring is in a vertical natural length state, and the tension sensor detects that the tension of the buoyancy ball is zero; the tension sensor is connected with the controller.

The lower pipe orifice inner side edge 47 of the first vertical pipe is provided with a plurality of notches 46.

When the upper surface of the buoyancy ball is pressed on the lower pipe orifice of the first vertical pipe through the notch, gas and transformer oil can pass through the notch. The reliability is good.

The gas color observation mechanism includes: a lower pipe orifice of a transparent vertical glass pipe 13 is in butt joint connection with an upper pipe orifice of a first vertical pipe, and a sealing slide block 11 is arranged in the transparent vertical glass pipe in a sealing up-down sliding manner; thereby forming a gas color observation cavity 68 in the cavity of the transparent vertical glass tube between the first one-way electromagnetic valve and the sealing slide block; the cover opening of a light shield 12 is hermetically connected on the outer surface of the upper box wall of the sealing box, and the transparent vertical glass tube is sealed in the light shield; a background cloth A14 is arranged in a light shield positioned at the right side of the transparent vertical glass tube, and a first camera 10 is arranged in a light shield positioned at the left side of the transparent vertical glass tube; an illuminating lamp 44 is arranged in the light shield; the control end of the illuminating lamp and the control end of the first camera are respectively connected with the controller.

The gas smell detection mechanism includes: smell detection sensor 9, smell detection sensor set up in being located the gaseous colour observation intracavity of one number one-way solenoid valve department, and smell detection sensor is connected with the controller.

The gas volume detection mechanism includes: a distance measuring sensor 45 for detecting the height position of the sealing slide block is downwards arranged at the upper end in the transparent vertical glass tube, and a limiting block 27 is fixedly arranged on the inner wall of the transparent vertical glass tube below the distance measuring sensor; the distance measuring sensor is connected with the controller.

The light shield is provided with a vent hole 36, and a dustproof filtering sponge 30 is arranged in the vent hole.

The gas flammability detection mechanism includes: an air inlet of an ignition detection air guide pipe 22 provided with a second one-way electromagnetic valve 23 is hermetically, fixedly and butt-jointed with a side wall exhaust hole 35 of the first vertical pipe; an ignition device 19 which can be remotely controlled to ignite is arranged at one side of the air outlet of the ignition detection air duct and can ignite combustible gas ejected from the air outlet 21 of the ignition detection air duct; a second camera 18 is arranged above the side of the air outlet of the ignition detection air duct; the ignition device can be a controllable electronic lighter;

the air outlet of the ignition detection air duct is arranged upwards, and a temperature sensor 17 is arranged above the air outlet of the ignition detection air duct; the control end of the second one-way electromagnetic valve, the control end of the ignition device, the second camera and the temperature sensor are respectively connected with the controller. The size of the flame at the air outlet can be observed through the second camera.

A wind shield 20 with openings at the upper part and the lower part is arranged above the ignition device, an air outlet of the ignition detection air duct is arranged in the lower opening of the wind shield, and a rain shield 15 is arranged on the outer wall of the wind shield above the wind shield; ignition, No. two cameras and temperature sensor all set up in the fan housing.

A metal heat-conducting net 16 is arranged right above the air outlet of the ignition detection air duct, and the temperature detection end of the temperature sensor is connected to the metal heat-conducting net.

In this example. The three temperature sensors are arranged, three layers of metal heat conducting nets are arranged above the air outlet of the ignition detection air guide pipe at intervals up and down, and the temperature detection ends of the three temperature sensors are respectively connected to each layer of metal heat conducting net in a one-to-one mode.

Bubble horizontal coordinate location detection mechanism includes: a first square reflecting ring 72 is fixedly sleeved on a power input column positioned in the transformer oil tank, and a second square frame-shaped reflecting ring 76 is fixedly sleeved on a power output column positioned in the transformer oil tank;

the first reflecting ring is formed by sequentially connecting and enclosing a first upper left reflecting plate 92, a first lower left reflecting plate 91, a first lower right reflecting plate 89 and a first upper right reflecting plate 88 which are completely equal in length; the second reflecting ring is formed by sequentially connecting and enclosing a second upper left reflecting plate 83, a second lower left reflecting plate 86, a second lower right reflecting plate 82 and a second upper right reflecting plate 81 which are completely equal in length;

a plurality of first right lower retroreflective patches 90 perpendicular to the reflective surface of the first right lower reflective plate are fixedly arranged on the reflective surface of the first right lower reflective plate at equal intervals, and the reflective surface of the first right lower retroreflective patch is arranged forwards;

a plurality of first upper right retroreflective sheets 87 vertical to the reflective surface of the first upper right reflective plate are fixedly arranged on the reflective surface of the first upper right reflective plate at equal intervals, and the reflective surface of the first upper right retroreflective sheet is arranged backwards;

a plurality of second left lower retroreflective sheets 85 perpendicular to the reflective surface of the second left lower reflective plate are fixedly arranged on the reflective surface of the second left lower reflective plate at equal intervals, and the reflective surface of the second left lower retroreflective sheet is arranged forwards;

a plurality of second upper left retroreflective patches 84 vertical to the reflective surface of the second upper left reflector are fixedly arranged on the reflective surface of the second upper left reflector at equal intervals, and the reflective surface of the second upper left retroreflective patches is arranged backwards;

a plurality of left laser lamps 69 which irradiate horizontally and directionally towards the right are horizontally arranged on the left box wall 95 in the transformer oil tank at intervals, and a plurality of right photoelectric sensors 77 are horizontally arranged on the right box wall 78 in the transformer oil tank at intervals;

a plurality of front laser lamps 94 which irradiate horizontally and directionally backwards are horizontally arranged on the front box wall 80 in the transformer oil tank at intervals, and a plurality of front photoelectric sensors 93 are also horizontally arranged on the front box wall in the transformer oil tank at intervals;

a plurality of rear laser lamps 73 which irradiate horizontally and forward directionally are horizontally arranged on the rear box wall 104 in the transformer oil tank at intervals, and a plurality of rear photoelectric sensors 70 are also horizontally arranged on the rear box wall in the transformer oil tank at intervals;

The first upper left reflector can only be irradiated by a left laser lamp arranged right and left of the first upper left reflector in a horizontal and right directional manner, and any light beam irradiated on the first upper left reflector can only be detected one by a rear photoelectric sensor arranged in front of the rear part of the first upper left reflector after being reflected by the first upper left reflector;

Still be equipped with baffle 25 in the seal box, airtight fixed connection is respectively on the preceding tank wall in the seal box, on the back tank wall and on the right tank wall to preceding terminal surface, rear end face and the right-hand member face of baffle, and the left tank wall interval arrangement of the left end face of baffle and seal box, the airtight fixed connection of the right-hand member face of baffle is on being located the right tank wall between case oil outlet and the case inlet port, and the baffle is from left side to right side slope up and is arranged.

The control method of the transformer internal fault monitoring system comprises the following steps:

when the transformer oil tank is used, when gas 40 is generated in the transformer oil tank, the gas enters the top of the sealed tank from the inside of the transformer oil tank through the tank oil outlet pipe, the more the gas is collected at the top of the sealed tank, the downward extrusion force of the gas is applied to the upper surface of the transformer oil in the sealed tank, the more the gas is collected at the top of the sealed tank, the larger the extrusion force of the gas is, the lower the transformer oil is applied to the upper surface of the transformer oil in the sealed tank after the extrusion force of the gas is applied, and the lowered transformer oil enters the transformer conservator through the tank oil inlet pipe;

In the embodiment, the oil pumping circulator is started in a mode of electrifying and breaking the A electromagnet; one end of the insulating guide pipe A is arranged at the upper end in the transformer oil tank, and one end of the insulating guide pipe B is arranged at the lower end in the transformer oil tank; because the impurities are generally sunk, the insulating guide pipe can circulate the transformer oil containing the impurities in a pipe orifice placing mode, and the detection reliability is improved.

The controller uploads the oil color information to the transformer fault monitoring platform by means of the wireless module; the method comprises the steps that an oil pumping circulator can be started by a worker at the transformer fault monitoring platform end through a controller at any time, transformer oil in a transformer oil tank circulates through a transparent tube A, a first LED lamp is turned on, the transformer oil in the transparent tube A and the transformer oil in a transparent tube B are shot through a camera A to obtain oil quality color information, and after the worker at the transformer fault monitoring platform end obtains the oil quality color information, if the oil quality color is within a set oil quality non-deterioration color range, the worker considers that the transformer oil is not deteriorated and does not need to change the transformer oil; and if the oil color is not within the set oil color range, the transformer oil is considered to be deteriorated, and the transformer oil is required to be changed.

In addition, under the condition that the transformer is oil-tight, if the pulling force applied to the pulling force sensor is larger, the generated gas is more, and if the pulling force applied to the pulling force sensor is smaller, the generated gas is less; the information on the total gas amount obtained by the tension sensor is a rough information on the total gas amount.

Because the weight of the sealing slide block is invariable, the pressure of the sealing slide block on the gas in the gas color observation cavity is invariable, so that the gas density in the gas color observation cavity is the same when measuring each time, and the reliability of a detection result is high due to the same gas density when detecting the color and the smell of the gas in the gas color observation cavity. Also when igniting the gas, the same flow rate of the gas jet is obtained, so that after each ignition, the presence or absence of a flame is observed under the condition of the same size of gas jet, and the temperature of the flame is detected by the temperature sensor.

If the flame is high, the temperature sensor on each layer of metal heat-conducting net can detect the temperature of the flame, and if the flame is low, the temperature sensor on the lower layer of metal heat-conducting net can detect the temperature of the flame. The temperature sensor and the second camera respectively detect the flame, and the reliability is good.

The buoyancy ball floats on the upper surface of the transformer oil, the liquid level height of the transformer oil in the seal box can be known according to the tension detected by the tension sensor, and the existence of gas at the top in the seal box and the rough information of the total gas quantity are also known. The embodiment can detect whether the transformer leaks oil or not.

The gas pressure at the top in the seal box is determined by the liquid level difference between the height of the upper surface of the transformer oil in the transformer conservator and the height of the upper surface of the transformer oil in the oil seal box;

the temperature sensor is added in the embodiment, so that the flammability of the gas can be better detected, if the flammability of the gas is good, the flame is large, and the temperature detected by the temperature sensor is high; the poor flammability of gas then flame is little, and the temperature that temperature sensor detected is high, through the judgement to temperature height and flame observation, can be better the judgement gaseous flammability.

In the embodiment, the liquid level height in the transformer conservator is judged by opening the first electromagnetic valve and judging whether the tension sensor is under the tension of the buoyancy ball; under the condition that the first electromagnetic valve is opened, if the pulling force of the buoyancy ball on the pulling force sensor is greater than zero and the pulling force is kept unchanged within a set time, the liquid level in the transformer conservator is lower than the height of the upper end face of the seal box, namely the liquid level in the transformer conservator is lower than the liquid level required by normal use, and the liquid level required by the normal use of the liquid level in the transformer conservator is higher than the height of the upper end face of the seal box. If the pulling force of the buoyancy ball on the pulling force sensor is equal to zero, the liquid level in the transformer conservator is within the liquid level height required by normal use.

The transformer oil tank monitoring system has the advantages that the transformer oil tank monitoring system has the remote monitoring management capability, the automatic exhaust of gas in the transformer oil tank can be realized, the gas generated at the burnt part of the power transformation component in the transformer oil tank can be used for carrying out remote monitoring management on the horizontal coordinate position, the fault type and the fault severity of the fault in the transformer, whether transformer oil is deteriorated or not can be remotely checked, the use is convenient and simple, and the reliability is good.

Claims

1. An internal fault monitoring system for a transformer, comprising a transformer oil pillow, a transformer oil tank, a substation component sealed in the transformer oil tank, and a power input column and a power output column whose lower ends are respectively connected to the upper end of the substation component and are arranged in a right-to-left arrangement. The column, the lower end of the power input column and the lower end of the power output column are sealed in the transformer oil tank; it is characterized in that it also includes a transformer fault monitoring platform, a controller, a gas collection fault detection trigger mechanism, a gas color observation mechanism, and a gas odor detection mechanism. , Gas volume detection mechanism, gas flammability detection mechanism, bubble horizontal coordinate positioning detection mechanism, memory, wireless module and No. 1 vertical pipe with No. 1 one-way solenoid valve;

The gas collection fault detection trigger mechanism includes a sealing box filled with transformer oil; an upper box hole is arranged on the upper box wall of the sealing box, and the lower end of the outer pipe wall of the No. 1 vertical pipe is sealed and fixed in the upper box hole. ; There is a side wall exhaust hole on the side wall of the No. 1 vertical pipe located above the No. 1 one-way solenoid valve;

The sealing box is arranged above the transformer oil tank, the box oil inlet hole of the sealing box is connected to the oil outlet of the transformer oil pillow through a box oil inlet pipe, and the box oil outlet hole of the sealing box is connected to the transformer through a box oil outlet pipe. On the oil inlet of the fuel tank, the intake end of the gas color observation mechanism is connected to the upper nozzle of the No. 1 vertical pipe, the gas odor detection mechanism is set in the gas color observation mechanism, and the gas volume detection mechanism is set in the gas color observation mechanism. The air inlet end of the gas flammability detection mechanism is connected to the side wall exhaust hole of the No. 1 vertical pipe, and the bubble horizontal coordinate positioning detection mechanism is arranged in the transformer oil tank;

The bubble horizontal coordinate positioning detection mechanism includes a number of laser lights and a number of photoelectric sensors that are equal to the number of the laser lights and are arranged one-to-one; the laser light emitted by each laser light can be detected one-to-one by the corresponding photoelectric sensor, and Several laser beams emitted by several laser lamps are arranged in a crisscross pattern, so that several laser beams arranged in a crisscross pattern form a horizontally arranged optical network in the transformer oil tank located above the substation components; The center lines all fall in the same horizontal plane, so that the optical network is composed of several criss-cross beams to form a horizontally arranged optical network, so that the intersection of any two beams in the optical network is in the two-dimensional coordinate plane. The location can be uniquely determined;

The bubble horizontal coordinate positioning detection mechanism also includes an address encoder bound to each photoelectric sensor;

The control end of the one-way solenoid valve No. 1, the control end of the gas collection fault detection trigger mechanism, the control end of the gas color observation mechanism, the control end of the gas odor detection mechanism, the control end of the gas volume detection mechanism, the control end of the gas flammability detection mechanism The control end, the control end of the bubble horizontal coordinate positioning detection mechanism, each photoelectric sensor, each address encoder, the memory and the wireless module are respectively connected with the controller; the controller is wirelessly connected with the transformer fault monitoring platform through the wireless module.

2 . The transformer internal fault monitoring system according to claim 1 , wherein the No. 1 one-way solenoid valve is fixedly arranged at the upper end of the No. 1 vertical pipe. 3 .

3. A transformer internal fault monitoring system according to claim 1, wherein the tank oil inlet hole of the sealing box is arranged below the box oil outlet hole of the sealing box; the box oil inlet hole and the sealing box of the sealing box are The oil outlet holes of the box are all arranged on the right box wall of the sealing box, and a partition is arranged in the sealing box between the box oil inlet hole of the sealing box and the box oil outlet hole of the sealing box. The end face and the right end face are respectively sealed and fixed on the front box wall, the rear box wall and the right box wall in the sealing box, and the left end face of the partition plate is arranged at intervals from the left box wall of the sealing box.