阅读说明：本技术 变压器智能集气盒及其控制方法 (Intelligent gas collecting box of transformer and control method thereof ) 是由 谢炜 陈挺 周川 王满平 于 2020-12-31 设计创作，主要内容包括：本发明公开了变压器智能集气盒及其控制方法。属于变压器故障监测设备技术领域,具有远程监控管理能力,能利用变压器油箱内的气体来对变压器油箱内的故障类型和故障严重程度进行远程监控管理,使用方便。包括装满有变压器油的密封箱、透明竖直玻璃管、控制器、存储器、变压器故障监控平台和无线模块；在密封箱的右箱壁下端设有箱进油孔,在密封箱的右箱壁上端设有箱出油孔,在密封箱的上箱壁上设有箱出气孔；在箱进油孔上和箱出油孔上分别密闭固定对接连接有箱进油管和箱出油管,箱进油管的进油端高于密封箱的上端面所在位置,箱处油管的出油端低于密封箱的下端面。(The invention discloses an intelligent gas collecting box of a transformer and a control method thereof. The transformer oil tank fault monitoring system belongs to the technical field of transformer fault monitoring equipment, has remote monitoring management capability, can utilize gas in a transformer oil tank to carry out remote monitoring management on fault types and fault severity in the transformer oil tank, and is convenient to use. The transformer fault monitoring system comprises a sealing box filled with transformer oil, a transparent vertical glass tube, a controller, a memory, a transformer fault monitoring platform and a wireless module; the lower end of the right box wall of the seal box is provided with a box oil inlet, the upper end of the right box wall of the seal box is provided with a box oil outlet, and the upper box wall of the seal box is provided with a box air outlet; the oil inlet end of the oil inlet pipe is higher than the upper end face of the seal box, and the oil outlet end of the oil pipe at the box position is lower than the lower end face of the seal box.)

1. The intelligent gas collection box of the transformer comprises a transformer conservator and a transformer oil tank, and is characterized by also comprising a seal box filled with transformer oil, a transparent vertical glass tube, a controller, a memory, a transformer fault monitoring platform and a wireless module;

the lower end of the right box wall of the seal box is provided with a box oil inlet, the upper end of the right box wall of the seal box is provided with a box oil outlet, and the upper box wall of the seal box is provided with an upper box hole;

the oil inlet end of the oil inlet pipe is higher than the upper end surface of the seal box, and the oil outlet end of the oil outlet pipe is lower than the lower end surface 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 end of the outer pipe wall of a first vertical pipe provided with a first one-way electromagnetic valve is hermetically and fixedly connected in the upper box hole, and 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 lower pipe orifice of the 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 up-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;

a side wall exhaust hole is formed in the first vertical pipe above the first one-way electromagnetic valve, and 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 the side wall exhaust hole 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;

an illuminating lamp is arranged in the lens hood; an odor detection sensor is arranged in the gas color observation cavity positioned at the first one-way electromagnetic valve;

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;

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 oil inlet end of the oil inlet pipe of the tank is fixedly connected to the oil outlet of the transformer conservator in a sealing way; the oil outlet end of the tank oil outlet pipe is fixedly connected to the oil inlet of the transformer oil tank in a sealing manner;

the distance measuring sensor, each temperature sensor, the control end of the illuminating lamp, the memory, the wireless module, the control end of the one-way electromagnetic valve, the tension sensor, the control end of the one-way camera, the control end of the two-way electromagnetic valve, the control end of the ignition device, the two-way camera and the odor detection sensor are respectively connected with the controller; the controller is wirelessly connected with the transformer fault monitoring platform through the wireless module.

2. The intelligent transformer gas collecting box according to claim 1, wherein a partition plate is further arranged in the sealed box, the front end face, the rear end face and the right end face of the partition plate are respectively and fixedly connected to the front box wall, the rear box wall and the right box wall in the sealed box in a sealing manner, the left end face of the partition plate and the left box wall of the sealed box are arranged at intervals, the right end face of the partition plate is fixedly connected to the right box wall between the oil outlet hole of the box and the oil inlet hole of the box in a sealing manner, and the partition plate is obliquely arranged from left to right and upwards.

3. The intelligent transformer gas collection box according to claim 1, wherein a wind shield with an upper opening and a lower opening is vertically and fixedly arranged on the outer wall of the wind shield, the gas outlet of the ignition detection gas guide tube 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.

4. The intelligent transformer gas collection box according to claim 1, wherein a light shield is provided with vent holes, and a dustproof filter sponge is arranged in the vent holes.

5. The intelligent transformer gas collecting box according to claim 1, wherein a metal heat conducting net is arranged right above the gas outlet of the ignition detection gas guide tube, and the temperature detection end of the temperature sensor is connected to the metal heat conducting net.

6. The control method of the intelligent gas collecting box of the transformer according to claim 1, characterized in that 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;

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 quantity information of the generated gas of the transformer 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 controller uploads the gas quantity information, the oil leakage information, the gas color information, the gas smell information, the information of whether the gas can be burnt and the gas flame temperature information to the transformer fault monitoring platform by means of the wireless module, and workers at the transformer fault monitoring platform end can manage the transformer fault 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 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;

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;

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 at the moment, the fault of the iron part in the transformer oil tank is serious, and if the gas quantity is small at the moment, the fault of the iron part in the transformer oil tank is not serious.

Technical Field

The invention relates to the technical field of transformer internal fault monitoring, in particular to an intelligent gas collecting box of a transformer and a control method thereof.

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 transformer parts 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, 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.

Disclosure of Invention

The invention aims to solve the defect that the fault of a transformer is not remotely monitored and managed by utilizing gas discharged from an oil tank of the transformer at present, and provides an intelligent gas collecting box of the transformer, which has the capability of remotely monitoring and managing, can remotely monitor and manage the fault type and the fault severity degree in the oil tank of the transformer by utilizing the gas in the oil tank of the transformer, is convenient to use and has high reliability, and a control method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the intelligent gas collection box of the transformer comprises a transformer conservator, a transformer oil tank, a seal box filled with transformer oil, a transparent vertical glass tube, a controller, a memory, a transformer fault monitoring platform and a wireless module;

the lower end of the right box wall of the seal box is provided with a box oil inlet, the upper end of the right box wall of the seal box is provided with a box oil outlet, and the upper box wall of the seal box is provided with an upper box hole;

the oil inlet end of the oil inlet pipe is higher than the upper end surface of the seal box, and the oil outlet end of the oil outlet pipe is lower than the lower end surface 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 end of the outer pipe wall of a first vertical pipe provided with a first one-way electromagnetic valve is hermetically and fixedly connected in the upper box hole, and 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 lower pipe orifice of the 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 up-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;

a side wall exhaust hole is formed in the first vertical pipe above the first one-way electromagnetic valve, and 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 the side wall exhaust hole 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 capable of observing the flame size of the air outlet is arranged above the air outlet side of the ignition detection air guide pipe;

an illuminating lamp is arranged in the lens hood; an odor detection sensor is arranged in the gas color observation cavity positioned at the first one-way electromagnetic valve;

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;

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 oil inlet end of the oil inlet pipe of the tank is fixedly connected to the oil outlet of the transformer conservator in a sealing way; the oil outlet end of the tank oil outlet pipe is fixedly connected to the oil inlet of the transformer oil tank in a sealing manner;

the distance measuring sensor, each temperature sensor, the control end of the illuminating lamp, the memory, the wireless module, the control end of the one-way electromagnetic valve, the tension sensor, the control end of the one-way camera, the control end of the two-way electromagnetic valve, the control end of the ignition device, the two-way camera and the odor detection sensor are respectively connected with the controller; the controller is wirelessly connected with the transformer fault monitoring platform through a wireless module;

the control method suitable for the intelligent gas collecting box of the transformer 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;

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 quantity information of the generated gas of the transformer 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 controller uploads the gas quantity information, the oil leakage information, the gas color information, the gas smell information, the information of whether the gas can be burnt and the gas flame temperature information to the transformer fault monitoring platform by means of the wireless module, and workers at the transformer fault monitoring platform end can manage the transformer fault 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 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;

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;

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 at the moment, the fault of the iron part in the transformer oil tank is serious, and if the gas quantity is small at the moment, the fault of the iron part in the transformer oil tank is not serious.

This scheme has remote monitoring power ability, can realize gaseous intelligent self-bleeding in the transformer tank, and the type and the severity of transformer internal fault are roughly judged to the gaseous of producing from the transformer tank of ability remote utilization, and convenient to use is simple, and the reliability is high.

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.

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, a wind shield with an upper opening and a lower opening is vertically and fixedly arranged on the outer wall of the light shield, 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 light 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, 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, 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.

The invention can achieve the following effects:

the invention has the remote monitoring and management capability, can utilize the gas in the transformer oil tank to carry out remote monitoring and management on the fault type and the fault severity in the transformer oil tank, and has convenient use and high reliability.

Drawings

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

Fig. 2 is a schematic view of a connection structure in a use state when there is a little gas at the top of the inside of the sealed box, the upper surface of the transformer oil is less dropped, and the tension applied to the tension sensor is less.

Fig. 3 is a schematic view of a connection structure in a use state when there is more gas at the top of the inside of the seal box, the upper surface of the transformer oil descends more, and the tension applied to the tension sensor is larger according to the embodiment of the invention.

FIG. 4 is a schematic view of a connection structure in a use state when the gas at the top in the sealed box enters the gas color observation cavity to perform gas color detection and gas smell detection according to the embodiment of the invention.

FIG. 5 is a schematic view of a connection structure of a use state when the gas in the gas color observation cavity is ignited and measured at the gas outlet of the ignition detection gas-guide tube according to the embodiment of the invention.

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

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

Fig. 8 is a schematic view of a vertical cross-section connection structure at a pipe orifice of a first vertical pipe according to an embodiment of the present invention.

In the figure: transformer oil 1, a seal box 2, a buoyancy ball 3, a first spring 4, a first vertical tube 5, a draw hook 6, a tension sensor 7, a first one-way electromagnetic valve 8, an odor detection sensor 9, a first camera 10, a seal slide block 11, a light shield 12, a transparent vertical glass tube 13, a A background cloth 14, a rain shield 15, a metal heat conduction net 16, a temperature sensor 17, a second camera 18, an ignition device 19, a wind shield 20, an air outlet 21 of an ignition detection air guide tube, an ignition detection air guide tube 22, a second one-way electromagnetic valve 23, a box oil outlet 24, a partition plate 25, a box oil outlet tube 26, a limit block 27, a box oil inlet tube 28, a box oil inlet 29, a dustproof filter sponge 30, an upper box hole 31, an oil inlet 32, an oil outlet 33, a spherical wall surface 34, a side wall exhaust hole 35, an air vent 36, a memory 37, a wireless module 38, a controller 39, gas 40, a transformer oil tank 41, a, Transformer conservator 42, transformer fault monitoring platform 43, light 44, distance measuring sensor 45, gap 46, lower pipe orifice inner side edge 47, and gas color observation cavity 68.

Detailed Description

The invention is further described with reference to the following figures and examples.

In the embodiment, the intelligent gas collecting box for the transformer, as shown in fig. 1-8, comprises a transformer conservator 42 and a transformer oil tank 41, and further comprises a seal box 2 filled with transformer oil 1, a transparent vertical glass tube 13, a controller 39, a memory 37, a transformer fault monitoring platform 43 and a wireless module 38;

the lower end of the right box wall of the seal box is provided with a box oil inlet 29, the upper end of the right box wall of the seal box is provided with a box oil outlet 24, and the upper box wall of the seal box is provided with an upper box hole 31;

the oil inlet hole and the oil outlet hole are respectively fixedly connected with an oil inlet pipe 28 and an oil outlet pipe 26 in a sealing and butt joint mode, the oil inlet end 32 of the oil inlet pipe is higher than the upper end face of the seal box, and the oil outlet end 33 of the oil outlet pipe 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 end of the outer pipe wall of a first vertical pipe 5 provided with a first one-way electromagnetic valve 8 is hermetically and fixedly connected in the upper tank hole, and the lower pipe orifice of the first vertical pipe is aligned with the lower orifice of the upper tank 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 lower pipe orifice of the transparent vertical glass pipe is in butt joint connection with the upper pipe orifice of the 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;

a side wall exhaust hole 35 is formed in the first vertical pipe above the first one-way electromagnetic valve, and an air inlet of the ignition detection air guide pipe 22 provided with the second one-way electromagnetic valve 23 is hermetically, fixedly and butt-jointed with the side wall exhaust hole 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 21 of the ignition detection air duct, and the ignition device can ignite the combustible gas sprayed out of the air outlet 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 size of the flame at the air outlet can be observed through the second camera;

an illuminating lamp is arranged in the lens hood; an odor detection sensor 9 is arranged in the gas color observation cavity at the position of the one-way electromagnetic valve I;

the gas outlet of the ignition detection gas-guide tube is arranged upwards, and a temperature sensor is arranged right above the gas outlet of the ignition detection gas-guide tube;

in this example. Three temperature sensors are arranged, three layers of metal heat-conducting nets 16 are arranged above and below the air outlet of the ignition detection air duct at intervals, 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 connection mode;

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 27 is fixedly arranged on the inner wall of the transparent vertical glass tube below the distance measuring sensor;

the oil inlet end of the oil inlet pipe of the tank is fixedly connected to the oil outlet of the transformer conservator in a sealing way; the oil outlet end of the oil outlet pipe of the tank is fixedly connected to the oil inlet of the transformer oil tank in a sealing manner.

The distance measuring sensor 45, each temperature sensor 17, the control end of the illuminating lamp 44, the memory 37, the wireless module 38, the control end of the first one-way electromagnetic valve 8, the tension sensor 7, the control end of the first camera 10, the control end of the second one-way electromagnetic valve 23, the control end of the ignition device 19, the second camera 18 and the odor detection sensor 9 are respectively connected with the controller 39; the controller is wirelessly connected with the transformer fault monitoring platform 43 through a wireless module.

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 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.

A wind shield 20 with an upper opening and a lower opening is vertically and fixedly arranged on the outer wall of the wind shield, 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, temperature sensor and metal heat conduction net all set up in the fan housing.

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

The lower pipe opening inner side edge 47 of the first vertical pipe 5 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 metal heat conducting net has three layers arranged at intervals up and down, and each layer is provided with a temperature sensor. The three layers of metal heat-conducting nets are arranged at equal intervals from top to bottom.

According to the control method of the intelligent gas collecting box of the transformer, the control method 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;

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 quantity information of the generated gas of the transformer 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 controller uploads the gas quantity information, the oil leakage information, the gas color information, the gas smell information, the information of whether the gas can be burnt and the gas flame temperature information to the transformer fault monitoring platform by means of the wireless module, and workers at the transformer fault monitoring platform end can manage the transformer fault 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 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;

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;

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 at the moment, the fault of the iron part in the transformer oil tank is serious, and if the gas quantity is small at the moment, the fault of the iron part in the transformer oil tank is not serious.

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 of the gas quantity obtained by the tension sensor is rough information of the gas quantity.

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 of the seal box and the rough gas quantity information can be 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 embodiment has the remote monitoring and management capability, can utilize the gas in the transformer oil tank to carry out remote monitoring and management on the fault type and the fault severity in the transformer oil tank, and is convenient to use and high in reliability.