CN107946032B - Transformer substation ground transformer mixing cooling system - Google Patents
Transformer substation ground transformer mixing cooling system Download PDFInfo
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- CN107946032B CN107946032B CN201711242684.6A CN201711242684A CN107946032B CN 107946032 B CN107946032 B CN 107946032B CN 201711242684 A CN201711242684 A CN 201711242684A CN 107946032 B CN107946032 B CN 107946032B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Abstract
The invention provides a mixed cooling system of a transformer substation ground transformer, which comprises a transformer, a base for supporting the transformer and a frame platform arranged on the ground around the transformer, wherein a circle of pressure pipeline is arranged on the periphery of the transformer on the frame platform, the pressure pipeline is communicated with a water supply mechanism, a walking mechanism is arranged on the frame platform corresponding to the pressure pipeline, an atomizing and spraying mechanism is arranged on the walking mechanism, a plurality of L-shaped connecting pipelines are vertically arranged on the pressure pipeline, the atomizing and spraying mechanism is matched with the connecting pipelines, a temperature monitoring mechanism is arranged on the pressure pipeline corresponding to the transformer, a device groove is arranged below the frame platform, an accelerating and heat absorbing mechanism is arranged in the device groove, and a spraying and monitoring mechanism is arranged between the transformer and the pressure pipeline corresponding to the connecting pipelines. The invention can automatically detect the temperature of the transformer, spray, atomize and cool the high-temperature area, accelerate the heat absorption and evaporation of water mist through wind power, greatly accelerate the speed reduction of the transformer and improve the safety of the transformer substation during operation.
Description
Technical Field
The invention relates to the technical field of transformer cooling protection, in particular to a ground transformer hybrid cooling system of a transformer substation.
Background
The heat dissipation and temperature reduction of the power transformer in the operation process play an important role in the safe operation of the transformer. The common power transformer is mainly an oil-immersed transformer, the main radiating part of the common power transformer is a radiator formed by a plurality of groups of radiating fins formed by connecting flaky radiating fins, and the radiating fins are cooled by utilizing a mode of natural air convection cooling and air circulation acceleration by installing fans at the bottoms of the radiating fins, so that the operating requirement of the transformer can be met under the common condition; however, in the natural state of continuous high temperature in a specific period of summer and under the condition that the transformer is in continuous high-load operation due to the power consumption peak brought by the natural state, the temperature of oil in the transformer is high, the original heat dissipation mode cannot meet the requirements, and in order to ensure that the transformer can safely operate, the traditional method is to cool by adopting methods of increasing the number of heat dissipation fans, placing ice blocks below the heat dissipation fins of the transformer and the like, so that a certain cooling effect can be achieved, the cooling amplitude is small, the speed is slow, the method is neither safe nor economical, and the purpose of emergency cooling cannot be achieved; the traditional most effective method is to locally switch off and limit the power to reduce the load of the transformer, but in the era that the current production and life cannot be powered, the switch off and the power limiting are not easy to be realized.
In order to solve the problem of heat dissipation and cooling of the power transformer in a specific time period, corresponding auxiliary heat dissipation and cooling systems or devices are researched frequently at present, the most common mode is that the auxiliary heat dissipation and cooling is carried out on the power transformer in an opposite-running mode by adopting a water spraying mode, for example, the granted publication number is CN 202678050U, and Chinese patent documents named as 'automatic water cooling device of the transformer' are invented and created, namely, the device for carrying out auxiliary cooling on the transformer mainly comprises a water pool, a water pump, a pipeline, a spraying device and a control device, and the adopted mode is that a water spraying pipe is arranged above a transformer body and a radiator, and the water spraying and cooling are directly carried out on the premise of temperature control; also, for example, chinese patent document No. CN 204407140U, entitled "a power transformer cooling device" discloses a device composed of a fixed water tank, two-way water pump system, a spray head disposed above a transformer main body and spraying directly, and a water-cooling fin cooled by circulating water through physical contact with the fin of the transformer; further, as the chinese patent document with the granted publication number CN 203165620U and the invention creation name of "a transformer heat sink water spray device", it discloses a device which directly sprays and cools the heat sink by a spray pipe connected with the water tank and a spray pipe connected with the spray pipe and arranged above the heat sink. However, these devices adopt direct water cooling instead of atomizing and spraying water, which results in a great amount of waste of water and does not meet the current energy-saving requirement. And the water is directly splashed on the transformer, so that the short circuit of the electrified part is easily caused, and accidents are caused.
Disclosure of Invention
In view of this, the invention provides a hybrid cooling system for an overground transformer of a transformer substation.
In order to solve the technical problem, the invention provides a mixed cooling system of a transformer substation ground transformer, which comprises a transformer, a base for supporting the transformer, and a frame platform arranged on the ground around the transformer, wherein a circle of pressure pipeline is arranged on the frame platform and is communicated with a water supply mechanism, a travelling mechanism is arranged on the frame platform corresponding to the pressure pipeline, an atomization spraying mechanism is arranged on the travelling mechanism, a plurality of L-shaped connecting pipelines are vertically arranged on the pressure pipeline, the atomization spraying mechanism is matched with the connecting pipelines, a temperature monitoring mechanism is arranged on the pressure pipeline corresponding to the transformer and is connected with a control mechanism, the control mechanism is connected with the travelling mechanism and the atomization spraying mechanism, a device groove is arranged below the frame platform, an acceleration heat absorption mechanism is arranged in the device groove, and a spraying monitoring mechanism is arranged between the transformer and the pressure pipeline corresponding to the connecting pipelines.
Furthermore, the accelerated heat absorption mechanism comprises a downward-inclined wind shield arranged on the side surface of the base, a circle of first air supply pipeline is arranged on the side surface of the base corresponding to the wind shield, the first air supply pipeline is communicated with an air pump arranged in the equipment groove through a second air supply pipeline, a plurality of air outlets are arranged on the inner side of the first air supply pipeline, and the air pump is in signal connection with the control mechanism.
Furthermore, it includes to spray monitoring mechanism the last support arm that sets up of connecting tube, the tip of support arm upwards sets up ultrasonic sensor, ultrasonic sensor with control mechanism signal connection.
Further, the control mechanism adopts a PLC controller.
Further, the number of the connection pipes is eight at minimum.
Further, water supply mechanism includes the water tower, the water tower pass through water pump and water supply pipe with pressure conduit intercommunication, the last first solenoid valve that sets up of connecting tube, first solenoid valve with control mechanism signal connection.
Furthermore, the pressure pipeline is annular, the outer side of the pressure pipeline is arranged on an annular track arranged on the frame platform, the cross section of the track is rectangular, a fixing groove is formed in the side face of the track, the walking mechanism comprises a base, a first support is arranged below the base, walking wheels are arranged on the first support and located on the upper surface of the track, the side face of the base corresponds to the fixing groove and is provided with a centering wheel, the walking wheels are in transmission connection with a first motor arranged below the base, and the first motor is in signal connection with the control mechanism.
Furthermore, the atomizing and spraying mechanism comprises a stand column arranged on the base, an atomizing cylinder is arranged at the top end of the stand column, a cross rod is arranged on the stand column corresponding to the connecting pipeline, a turnover mechanism is arranged on the cross rod, the end portion of the turnover mechanism corresponds to the connecting pipeline, a connecting mechanism is arranged on the connecting mechanism and is communicated with an atomizing nozzle arranged on the atomizing cylinder through a connecting hose, an axial flow fan is arranged at the tail end of the atomizing cylinder, and the axial flow fan is in signal connection with the control mechanism.
Further, coupling mechanism includes the connecting cylinder, the connecting cylinder is funnel-shaped structure, the internal surface of connecting cylinder sets up the elasticity sealing layer, the elasticity sealing layer with the structure phase-match of connecting cylinder.
Furthermore, the turnover mechanism comprises a second support arranged on the cross rod, a rotating shaft is rotatably arranged on the second support, an installation rod is arranged on the rotating shaft, the rotating shaft is in transmission connection with a second motor arranged on the cross rod, the front end of the installation rod is provided with the connecting cylinder, and the second motor is in signal connection with the control mechanism.
Further, the first motor and the second motor are servo motors.
Furthermore, the atomizer sets up the opening part of a spray section of thick bamboo, the atomizer is four at least, the atomizer front end sets up the electrode ring, the electrode ring is in with the setting the electrostatic generator electricity in the spray section of thick bamboo outside is connected.
Furthermore, the temperature monitoring mechanism comprises an infrared temperature sensor which is arranged on the pressure pipeline and corresponds to the transformer, the infrared temperature sensor is in signal connection with the control mechanism, and the temperature monitoring mechanisms are at least four and are uniformly arranged on the pressure pipeline.
A mixed cooling method for an overground transformer of a transformer substation comprises the following steps:
s1, monitoring the surface temperature of a transformer through a non-contact infrared temperature sensor so as to reflect the temperature condition of each position of the transformer;
s2, when the temperature of a certain position is monitored to exceed a threshold value, the walking mechanism moves the atomization spraying mechanism to a connecting pipeline corresponding to the position where the temperature of the transformer exceeds the threshold value;
s3, butting the atomization spraying mechanism with a connecting pipeline, starting a water pump of a water tower to enable cooling water to be sprayed out from an atomization spray head of a spraying cylinder, carrying static electricity when the cooling water is sprayed out, and then flying to a transformer through wind power generated by an axial flow fan;
s4, in the process that the atomized water droplets carrying the static electricity fly to the transformer, the atomized water droplets are adsorbed by the surface of the transformer, and the utilization rate of the spray cooling water can be improved;
s5, after spraying, the temperature is reduced too slowly, the air pump is opened to enable air to be sprayed out from the first air supply pipeline, the air flows upwards under the action of the wind shield, and the heat dissipation of the transformer is accelerated;
s6, the spraying monitoring mechanism detects the working condition of the atomization spraying mechanism, and when the fact that large water masses continuously spray water to the transformer is found, the control mechanism closes the water supply mechanism, stops spraying and waits for maintenance.
The invention provides a transformer substation ground transformer mixed cooling system which comprises a transformer, a base for supporting the transformer and a frame platform arranged on the ground around the transformer, wherein a circle of pressure pipeline is arranged on the frame platform and is communicated with a water supply mechanism, a travelling mechanism is arranged on the frame platform corresponding to the pressure pipeline, an atomization spraying mechanism is arranged on the travelling mechanism, a plurality of L-shaped connecting pipelines are vertically arranged on the pressure pipeline, the atomization spraying mechanism is matched with the connecting pipelines, a temperature monitoring mechanism is arranged on the pressure pipeline corresponding to the transformer and is connected with a control mechanism, and the control mechanism is connected with the travelling mechanism and the atomization spraying mechanism. The frame platform is used for installing this cooling system, and pipeline under pressure is the ring shape, and connecting tube is used for providing the cooling water in the pipeline under pressure, detects a certain regional temperature rising of transformer when temperature monitoring mechanism, and running gear drives along pipeline under pressure and atomizes and spray mechanism and remove to this regional nearest connecting tube department, sprays mechanism butt joint with the connecting tube with the atomizing for the atomizing sprays the mechanism and can work, aims at transformer high temperature region and atomizes and spray the cooling. The device need not to set up a plurality of shower heads, practices thrift the cost, can automatic operation monitoring transformer temperature and cooling, and control mechanism is responsible for controlling each mechanism on scene, realizes the function of each mechanism. The frame platform below sets up the equipment groove, and the equipment inslot sets up heat absorption mechanism with higher speed, corresponds the connecting tube setting between transformer and the pipeline under pressure and sprays monitoring mechanism. The accelerated heat absorption mechanism can provide wind power to blow the transformer, and accelerates evaporation of water mist adsorbed on the transformer, so that heat dissipation is accelerated. The spraying monitoring mechanism can monitor the spraying condition, the problem of the spraying mechanism caused by atomization is avoided, and the sprayed water mass damages the transformer.
The accelerated heat absorption mechanism comprises a downward-inclined wind shield arranged on the side face of the base, a circle of first air supply pipeline is arranged on the side face of the base corresponding to the wind shield, the first air supply pipeline is communicated with an air pump arranged in the equipment groove through a second air supply pipeline, a plurality of air outlets are arranged on the inner side of the first air supply pipeline, and the air pump is in signal connection with the control mechanism. Air pump pressurization sends into first supply air duct through the second supply air duct, and a plurality of air outlet of first supply air duct inboard blows off the air, and under the effect of deep bead, the air upflow to blow to the transformer side, thereby accelerate the evaporation of water and dispel the heat with higher speed.
The spraying monitoring mechanism comprises a support arm arranged on the connecting pipeline, an ultrasonic sensor is upwards arranged at the end part of the support arm, and the ultrasonic sensor is in signal connection with the control mechanism. Ultrasonic sensor can monitor the object, and ultrasonic sensor sets up between connecting tube and transformer, and the atomizing sprays the mechanism like this and when spouting from connecting tube department, ultrasonic sensor monitors spun water smoke, and when the massive water group appears, ultrasonic sensor alright in order to monitor the existence of water group to in time give control mechanism with information transmission, close the atomizing fast and spray the mechanism, avoid the transformer to go wrong.
The control mechanism adopts a PLC controller, adopts a programmable memory, stores instructions for executing operations such as logic operation, sequence control, timing, counting, arithmetic operation and the like in the programmable memory, and controls various types of mechanical equipment through digital or analog input and output.
The minimum number of the connecting pipelines is eight, so that the temperature reduction of each area of the transformer can be ensured.
The water supply mechanism comprises a water tower, the water tower is communicated with the pressure pipeline through a water pump and a water supply pipeline, a first electromagnetic valve is arranged on the connecting pipeline, and the first electromagnetic valve is in signal connection with the control mechanism. The corresponding connecting pipeline can be opened to first solenoid valve for the cooling water in the water tower can get into this connecting pipeline after the water pump work, thereby sends the cooling water to the atomizing and sprays the mechanism, realizes the cooling to the transformer.
Pipeline under pressure is the annular, and the annular track that the pipeline under pressure outside set up on the frame platform, orbital cross-section be the rectangle, and orbital side sets up the fixed slot, and running gear includes the base, and the below of base sets up first support, sets up the walking wheel on the first support, and the walking wheel is located orbital upper surface, the side of base correspond the fixed slot setting and right the wheel, and the walking wheel is connected with the first motor drive that sets up in the base below, first motor and control mechanism signal connection. The endless track limits the running gear, so that the running gear can only move along the track. The base of the walking mechanism is provided with an atomization spraying mechanism, and the lower part of the base is provided with a device for driving the walking mechanism to walk. The walking wheel is on orbital upper surface, realizes running gear's removal through a motor drive, and the fixed slot that the base side corresponds the track sets up the rightting wheel, avoids strong wind or collision to make running gear crooked to influence the atomizing and spray the butt joint of mechanism and connecting tube. The first motor is connected with the control mechanism, and the control mechanism can control the walking motor to move to a corresponding position.
The atomizing spray mechanism comprises a stand column arranged on a base, an atomizing spray cylinder is arranged at the top end of the stand column, a cross rod is arranged on the stand column corresponding to a connecting pipeline, a turnover mechanism is arranged on the cross rod, the end portion of the turnover mechanism corresponds to the connecting pipeline and is provided with a connecting mechanism, the connecting mechanism is communicated with an atomizing spray head arranged on the atomizing spray cylinder through a connecting hose, and an axial flow fan is arranged at the tail end of the atomizing spray cylinder and is in signal connection with a control mechanism. The turnover mechanism arranged on the cross rod turns over the connecting mechanism to realize butt joint with a connecting pipeline, the connecting mechanism is positioned at the upper part of the cross rod when butt joint is not needed, and the connecting mechanism is positioned at the front end of the cross rod when butt joint is needed, so that the travelling mechanism moves to the next one; when the pipeline is connected, the connecting mechanism is in butt joint with the outlet at the upper part of the connecting pipeline, and cooling water in the connecting pipeline can enter the connecting mechanism. The connecting mechanism sends cooling water to the atomizing nozzle on the spraying cylinder through the connecting hose to atomize and spray the cooling water. And the axial flow fan arranged at the tail end of the spraying cylinder blows water to the transformer to realize cooling.
The connecting mechanism comprises a connecting cylinder, the connecting cylinder is of a funnel-shaped structure, an elastic sealing layer is arranged on the inner surface of the connecting cylinder, and the elastic sealing layer is matched with the connecting cylinder in structure. The connecting cylinder is in butt joint with the opening of the connecting pipeline and is sealed through the elastic sealing layer, after the spraying and cooling are finished, the walking mechanism retreats one step, then the turnover mechanism turns over the connecting cylinder to the upper side of the cross rod, and the walking mechanism can not touch the connecting pipeline when the connecting cylinder is moved. When the opening of the connecting pipeline is inserted into the connecting cylinder, the elastic sealing layer seals the gap between the connecting cylinder and the elastic sealing layer, so that high-pressure cooling water is prevented from flowing out of the gap, and the pressure of the atomizing nozzle can be ensured.
The turnover mechanism comprises a second support arranged on a cross rod, a rotating shaft is rotatably arranged on the second support, an installation rod is arranged on the rotating shaft, the rotating shaft is in transmission connection with a second motor arranged on the cross rod, the front end of the installation rod is provided with a connecting cylinder, and the second motor is in signal connection with a control mechanism. The turnover mechanism is characterized in that a plane where the mounting rod rotates is overlapped with a vertical plane where the cross rod is located, and when butt joint is needed, the second motor drives the rotating shaft to rotate, so that the connecting cylinder is turned out of the upper portion of the cross rod and is in butt joint with the connecting pipeline; when the butt joint is not needed, the second motor drives the rotating shaft to rotate, so that the connecting cylinder is turned back to the upper part of the cross rod.
The first motor and the second motor are servo motors.
The atomizing spray heads are arranged at the openings of the atomizing barrels, the number of the atomizing spray heads is at least four, the front ends of the atomizing spray heads are provided with electrode rings, and the electrode rings are electrically connected with an electrostatic generator arranged on the outer side of the atomizing barrels. Ventilation power flows in the atomizer, and the atomizer spun water smoke at the opening part through wind-force drive alright fly to the transformer, and the atomizer does not directly set up in the atomizer, is that big wind-force carries a small amount of water smoke like this, guarantees the transport distance of water smoke, the utilization ratio is higher. The electrostatic generator makes the electrode ring electrified, and water smoke carries static electricity, can directly adsorb on the transformer surface after being close to the transformer, and can not slide to other places along with gas flow, can improve the utilization ratio of water.
The temperature monitoring mechanism comprises infrared temperature sensors which are arranged on the pressure pipeline corresponding to the transformer, the infrared temperature sensors are in signal connection with the control mechanism, and the temperature monitoring mechanisms are at least four and are uniformly arranged on the pressure pipeline.
The invention also provides a mixed cooling method for the transformer substation overground transformer, which comprises the following steps:
s1, monitoring the surface temperature of a transformer through a non-contact infrared temperature sensor so as to reflect the temperature condition of each position of the transformer;
s2, when the temperature of a certain position is monitored to exceed a threshold value, the walking mechanism moves the atomization spraying mechanism to a connecting pipeline corresponding to the position where the temperature of the transformer exceeds the threshold value;
s3, butting the atomization spraying mechanism with a connecting pipeline, starting a water pump of a water tower to enable cooling water to be sprayed out from an atomization spray head of a spraying cylinder, carrying static electricity when the cooling water is sprayed out, and then flying to a transformer through wind power generated by an axial flow fan;
s4, in the process that the atomized water droplets carrying static electricity fly to the transformer, the atomized water droplets are adsorbed by the surface of the transformer, and the utilization rate of spray cooling water can be improved;
s5, after spraying, the temperature is reduced too slowly, the air pump is opened to enable air to be sprayed out from the first air supply pipeline, the air flows upwards under the action of the wind shield, and the heat dissipation of the transformer is accelerated;
s6, the spraying monitoring mechanism detects the working condition of the atomization spraying mechanism, and when the fact that large water masses continuously spray water to the transformer is found, the control mechanism closes the water supply mechanism, stops spraying and waits for maintenance.
The invention can automatically detect the temperature of the transformer, spray, atomize and cool the high-temperature area, accelerate the heat absorption and evaporation of water mist through wind power, greatly accelerate the speed reduction of the transformer, improve the safety of the transformer substation during operation and ensure the stable supply of electric power.
Drawings
FIG. 1 is a top view of a hybrid cooling system for an above-ground transformer of a substation according to the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural diagram of the running gear and the track of the present invention;
FIG. 4 is a schematic structural view of a water supply mechanism according to the present invention;
FIG. 5 is a schematic structural view of the turnover mechanism and the connecting mechanism of the present invention;
FIG. 6 is a schematic diagram of the construction of the spray cartridge of the present invention;
fig. 7 is a schematic structural diagram of the accelerated heat absorption mechanism of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 7 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the description of the embodiments of the invention given above, are within the scope of protection of the invention.
The embodiment I provides a mixed cooling system of transformer substation ground transformer, including transformer 3, support base 15 of transformer 3 the frame platform 14 that sets up on the peripheral ground of transformer 3, be in on the frame platform 14 the transformer 3 periphery sets up round pipeline under pressure 4, pipeline under pressure 4 and water supply mechanism intercommunication correspond pipeline under pressure 4 is in set up running gear 6 on the frame platform 14, set up the atomizing on the running gear 6 and spray mechanism 7, the vertical connecting tube 2 that sets up a plurality of L type on the pipeline under pressure 4, the atomizing spray mechanism 7 with the connecting tube 2 cooperatees, correspond on the pipeline under pressure 4 transformer 3 sets up temperature monitoring mechanism 5, temperature monitoring mechanism 5 is connected with control mechanism, control mechanism with running gear 6 and atomizing spray mechanism 7 and be connected, frame platform 14 below sets up equipment groove 17, the setting in the equipment groove 17 is with the heat absorption mechanism with higher speed, transformer 3 with correspond between the pipeline under pressure 4 connecting tube 2 sets up and sprays monitoring mechanism.
The accelerated heat absorption mechanism comprises a downward inclined wind shield 56 arranged on the side surface of the base 15, a circle of first air supply pipeline 54 is arranged on the side surface of the base 15 corresponding to the wind shield 56, the first air supply pipeline 54 is communicated with an air pump 53 arranged in the equipment groove 17 through a second air supply pipeline 52, a plurality of air outlets 55 are arranged on the inner side of the first air supply pipeline 54, and the air pump 53 is in signal connection with the control mechanism.
The spraying monitoring mechanism comprises a support arm 51 arranged on the connecting pipeline 2, an ultrasonic sensor 50 is upwards arranged at the end part of the support arm 51, and the ultrasonic sensor 50 is in signal connection with the control mechanism.
The control mechanism adopts a PLC controller.
The connecting pipes 2 are a minimum of eight.
The temperature monitoring mechanism 5 comprises an infrared temperature sensor which is arranged on the pressure pipeline 4 and corresponds to the transformer 3, the infrared temperature sensor is in signal connection with the control mechanism, and the temperature monitoring mechanism 5 is at least four and is uniformly arranged on the pressure pipeline 4.
The system comprises a transformer, a base for supporting the transformer, a frame platform arranged on the ground at the periphery of the transformer, a circle of pressure pipeline is arranged at the periphery of the transformer on the frame platform, the pressure pipeline is communicated with a water supply mechanism, a walking mechanism is arranged on the frame platform corresponding to the pressure pipeline, an atomization spraying mechanism is arranged on the walking mechanism, a plurality of L-shaped connecting pipelines are vertically arranged on the pressure pipeline, the atomization spraying mechanism is matched with the connecting pipelines, a temperature monitoring mechanism is arranged on the pressure pipeline corresponding to the transformer, the temperature monitoring mechanism is connected with a control mechanism, and the control mechanism is connected with the walking mechanism and the atomization spraying mechanism. The frame platform is used for installing this cooling system, and pipeline under pressure is the ring shape, and connecting tube is used for providing the cooling water in the pipeline under pressure, detects a certain regional temperature rising of transformer when temperature monitoring mechanism, and running gear drives along pipeline under pressure and atomizes and spray mechanism and remove to this regional nearest connecting tube department, sprays mechanism butt joint with the connecting tube with the atomizing for the atomizing sprays the mechanism and can work, aims at transformer high temperature region and atomizes and spray the cooling. The device need not to set up a plurality of shower heads, practices thrift the cost, can automize the operation monitoring transformer temperature and cool down, and control mechanism is responsible for controlling each mechanism on scene, realizes the function of each mechanism. An equipment groove is arranged below the frame platform, an accelerating heat absorption mechanism is arranged in the equipment groove, and a spraying monitoring mechanism is arranged between the transformer and the pressure pipeline and corresponds to the connecting pipeline. The accelerated heat absorption mechanism can provide wind power to blow the transformer, and accelerates evaporation of water mist adsorbed on the transformer, so that heat dissipation is accelerated. The spraying monitoring mechanism can monitor the spraying condition, the problem of the spraying mechanism caused by atomization is avoided, and the sprayed water mass damages the transformer.
The accelerated heat absorption mechanism comprises a downward-inclined wind shield arranged on the side face of the base, a circle of first air supply pipeline is arranged on the side face of the base corresponding to the wind shield, the first air supply pipeline is communicated with an air pump arranged in the equipment groove through a second air supply pipeline, a plurality of air outlets are arranged on the inner side of the first air supply pipeline, and the air pump is in signal connection with the control mechanism. Air pump pressurization sends into first supply air duct through the second supply air duct, and a plurality of air outlet of first supply air duct inboard blows off the air, and under the effect of deep bead, the air upflow to blow to the transformer side, thereby accelerate the evaporation of water and dispel the heat with higher speed.
The spraying monitoring mechanism comprises a support arm arranged on the connecting pipeline, an ultrasonic sensor is upwards arranged at the end part of the support arm, and the ultrasonic sensor is in signal connection with the control mechanism. Ultrasonic sensor can monitor the object, and ultrasonic sensor sets up between connecting tube and transformer, and when atomizing spray mechanism followed connecting tube department blowout like this, ultrasonic sensor monitored spun water smoke, and when bold water mass appears, ultrasonic sensor alright in order to monitor the existence of water mass to in time give control mechanism with information transmission, close the atomizing fast and spray the mechanism, avoid the transformer to go wrong.
The control mechanism adopts a PLC controller, adopts a programmable memory, stores instructions for executing operations such as logic operation, sequence control, timing, counting, arithmetic operation and the like in the programmable memory, and controls various types of mechanical equipment through digital or analog input and output.
The minimum number of the connecting pipelines is eight, so that the temperature reduction of each area of the transformer can be ensured. The temperature monitoring mechanism adopts 4 alright to monitor the four sides of transformer.
Example two
The difference between the present embodiment and the first embodiment is:
the water supply mechanism comprises a water tower 36, the water tower 36 is communicated with the pressure pipeline 4 through a water pump 37 and a water supply pipeline 16, a first electromagnetic valve 42 is arranged on the connecting pipeline 2, and the first electromagnetic valve 42 is in signal connection with the control mechanism.
The solar power generation mechanism 41 comprises a solar cell panel arranged on the periphery of the transformer 3, the environment cooling mechanism comprises a plurality of water spray pipes 20 which are arranged on the pressure pipeline 4 outwards, spray heads are arranged at the end parts of the water spray pipes 20, second electromagnetic valves are arranged on the water spray pipes 20, and the second electromagnetic valves are connected with the control mechanism.
The pressure pipeline 4 is annular, the annular track 1 is arranged on the frame platform 14 outside the pressure pipeline 4, the cross section of the track 1 is rectangular, a fixing groove 27 is formed in the side surface of the track 1, the travelling mechanism 6 comprises a base 23, a first support 39 is arranged below the base 23, a travelling wheel 24 is arranged on the first support 39, the travelling wheel 24 is located on the upper surface of the track 1, a righting wheel 26 is arranged on the side surface of the base 23 corresponding to the fixing groove 27, the travelling wheel 24 is in transmission connection with a first motor 25 arranged below the base 23, and the first motor 25 is in signal connection with the control mechanism.
Atomizing spray mechanism 7 includes stand 21 that sets up on base 23, the top of stand 21 sets up spray tube 9, correspond on the stand 21 connecting tube 2 sets up horizontal pole 22, set up tilting mechanism 12 on the horizontal pole 22, tilting mechanism 12's tip corresponds connecting tube 2 sets up coupling mechanism 13, coupling mechanism 13 passes through coupling hose 11 and sets up atomizer 10 intercommunication on the spray tube 9, the end of spray tube 9 sets up axial fan 8, axial fan 8 with control mechanism signal connection.
The connecting mechanism 13 comprises a connecting cylinder 29, the connecting cylinder 29 is of a funnel-shaped structure, an elastic sealing layer 28 is arranged on the inner surface of the connecting cylinder 29, and the elastic sealing layer 28 is matched with the structure of the connecting cylinder 29.
The first motor 25 and the second motor 33 are servo motors.
The atomizer 10 sets up the opening part of spray can 9, atomizer 10 is four at least, atomizer 10 front end sets up electrode ring 34, electrode ring 34 with set up the electrostatic generator electricity 35 in the spray can 9 outside is connected.
The water supply mechanism comprises a water tower, the water tower is communicated with the pressure pipeline through a water pump and a water supply pipeline, a first electromagnetic valve is arranged on the connecting pipeline, and the first electromagnetic valve is in signal connection with the control mechanism. The corresponding connecting pipeline can be opened to first solenoid valve for the cooling water in the water tower can get into this connecting pipeline after the water pump work, thereby sends the cooling water to the atomizing and sprays the mechanism, realizes the cooling to the transformer.
The solar power generation mechanism comprises a solar cell panel arranged on the periphery of the transformer, the environment cooling mechanism comprises a plurality of water spray pipes which are arranged on the pressure pipeline outwards, spray heads are arranged at the end parts of the water spray pipes, second electromagnetic valves are arranged on the water spray pipes, and the second electromagnetic valves are connected with the control mechanism. When the ambient temperature is too high, the second electromagnetic valve is opened to spray the periphery of the transformer, so that the ambient temperature of the periphery is reduced, and the temperature of the transformer is indirectly reduced.
Pipeline under pressure is the annular, and the annular track that the pipeline under pressure outside set up on the frame platform, orbital cross-section be the rectangle, and orbital side sets up the fixed slot, and running gear includes the base, and the below of base sets up first support, sets up the walking wheel on the first support, and the walking wheel is located orbital upper surface, the side of base correspond the fixed slot setting and right the wheel, and the walking wheel is connected with the first motor drive that sets up in the base below, first motor and control mechanism signal connection. The endless track limits the running gear, so that the running gear can only move along the track. The base of the walking mechanism is provided with an atomization spraying mechanism, and the lower part of the base is provided with a device for driving the walking mechanism to walk. The walking wheel is on orbital upper surface, realizes running gear's removal through a motor drive, and the fixed slot that the base side corresponds the track sets up the rightting wheel, avoids strong wind or collision to make running gear crooked to influence the atomizing and spray the butt joint of mechanism and connecting tube. The first motor is connected with the control mechanism, and the control mechanism can control the walking motor to move to a corresponding position.
The atomizing spray mechanism comprises a stand column arranged on a base, an atomizing spray cylinder is arranged at the top end of the stand column, a cross rod is arranged on the stand column corresponding to a connecting pipeline, a turnover mechanism is arranged on the cross rod, the end portion of the turnover mechanism corresponds to the connecting pipeline and is provided with a connecting mechanism, the connecting mechanism is communicated with an atomizing spray head arranged on the atomizing spray cylinder through a connecting hose, and an axial flow fan is arranged at the tail end of the atomizing spray cylinder and is in signal connection with a control mechanism. The turnover mechanism arranged on the cross rod turns over the connecting mechanism to realize butt joint with a connecting pipeline, the connecting mechanism is positioned at the upper part of the cross rod when butt joint is not needed, and the connecting mechanism is positioned at the front end of the cross rod when butt joint is needed, so that the travelling mechanism moves to the next one; when the pipeline is connected, the connecting mechanism is in butt joint with the outlet at the upper part of the connecting pipeline, and cooling water in the connecting pipeline can enter the connecting mechanism. The connecting mechanism sends cooling water to the atomizing nozzle on the spraying cylinder through the connecting hose to atomize and spray the cooling water. And the axial flow fan arranged at the tail end of the spraying cylinder blows water to the transformer to realize cooling.
The connecting mechanism comprises a connecting cylinder, the connecting cylinder is of a funnel-shaped structure, an elastic sealing layer is arranged on the inner surface of the connecting cylinder, and the elastic sealing layer is matched with the connecting cylinder in structure. The connecting cylinder is in butt joint with the opening of the connecting pipeline and is sealed through the elastic sealing layer, after the spraying and cooling are finished, the walking mechanism retreats one step, then the turnover mechanism turns over the connecting cylinder to the upper side of the cross rod, and the walking mechanism can not touch the connecting pipeline when the connecting cylinder is moved. When the opening of the connecting pipeline is inserted into the connecting cylinder, the elastic sealing layer seals the gap between the connecting cylinder and the elastic sealing layer, so that high-pressure cooling water is prevented from flowing out of the gap, and the pressure of the atomizing nozzle can be ensured.
The turnover mechanism comprises a second support arranged on a cross rod, a rotating shaft is rotatably arranged on the second support, an installation rod is arranged on the rotating shaft, the rotating shaft is in transmission connection with a second motor arranged on the cross rod, the front end of the installation rod is provided with a connecting cylinder, and the second motor is in signal connection with a control mechanism. The turnover mechanism is characterized in that a plane where the mounting rod rotates is overlapped with a vertical plane where the cross rod is located, and when butt joint is needed, the second motor drives the rotating shaft to rotate, so that the connecting cylinder is turned out of the upper portion of the cross rod and is in butt joint with the connecting pipeline; when the butt joint is not needed, the second motor drives the rotating shaft to rotate, so that the connecting cylinder is turned back to the upper part of the cross rod.
The atomizing spray heads are arranged at the openings of the atomizing barrels, the number of the atomizing spray heads is at least four, the front ends of the atomizing spray heads are provided with electrode rings, and the electrode rings are electrically connected with an electrostatic generator arranged on the outer side of the atomizing barrels. Ventilation power flows in the atomizing barrel, and the atomizer spun water smoke at the opening part passes through wind-force drive alright with fly to the transformer, and the atomizer does not directly set up in the atomizing barrel, is that big wind-force carries a small amount of water smoke like this, guarantees the transport distance of water smoke, and the utilization ratio is higher. The electrostatic generator makes the electrode ring electrified, and water smoke carries static electricity, can directly adsorb on the transformer surface after being close to the transformer, and can not slide to other places along with gas flow, can improve the utilization ratio of water.
EXAMPLE III
The embodiment also provides a hybrid cooling method for the transformer substation on the ground, which comprises the following steps:
s1, monitoring the surface temperature of a transformer through a non-contact infrared temperature sensor so as to reflect the temperature condition of each position of the transformer;
s2, when the temperature of a certain position is monitored to exceed a threshold value, the walking mechanism moves the atomization spraying mechanism to a connecting pipeline corresponding to the position where the temperature of the transformer exceeds the threshold value;
s3, butting the atomization spraying mechanism with a connecting pipeline, and opening a water pump of a water tower to enable cooling water to be sprayed out from an atomization nozzle of a spraying cylinder, wherein the cooling water carries static electricity when being sprayed out, and then flies to the transformer through wind power generated by an axial flow fan;
s4, in the process that the atomized water droplets carrying the static electricity fly to the transformer, the atomized water droplets are adsorbed by the surface of the transformer, and the utilization rate of the spray cooling water can be improved;
s5, after spraying, the temperature is reduced too slowly, the air pump is opened to enable air to be sprayed out from the first air supply pipeline, the air flows upwards under the action of the wind shield, and the heat dissipation of the transformer is accelerated;
s6, the spraying monitoring mechanism detects the working condition of the atomization spraying mechanism, and when the fact that large water masses continuously spray water to the transformer is found, the control mechanism closes the water supply mechanism, stops spraying and waits for maintenance.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a mixed cooling system of transformer substation ground transformer which characterized in that: the device comprises a transformer, a base for supporting the transformer and a frame platform arranged on the ground at the periphery of the transformer, wherein a circle of pressure pipeline is arranged at the periphery of the transformer on the frame platform, the pressure pipeline is communicated with a water supply mechanism, a walking mechanism is arranged on the frame platform corresponding to the pressure pipeline, an atomization spraying mechanism is arranged on the walking mechanism, a plurality of L-shaped connecting pipelines are vertically arranged on the pressure pipeline, the atomization spraying mechanism is matched with the connecting pipelines, a temperature monitoring mechanism is arranged on the pressure pipeline corresponding to the transformer and connected with a control mechanism, the control mechanism is connected with the walking mechanism and the atomization spraying mechanism, a device groove is arranged below the frame platform, an accelerated heat absorption mechanism is arranged in the device groove, a spraying monitoring mechanism is arranged between the transformer and the pressure pipeline corresponding to the connecting pipelines, the spraying condition is monitored, the problem of the atomization spraying mechanism is avoided, and the sprayed water mass causes damage to the transformer;
the accelerated heat absorption mechanism comprises a downward-inclined wind shield arranged on the side surface of the base, a circle of first air supply pipeline is arranged on the side surface of the base corresponding to the wind shield, the first air supply pipeline is communicated with an air pump arranged in an equipment groove through a second air supply pipeline, a plurality of air outlets are arranged on the inner side of the first air supply pipeline, and the air pump is in signal connection with the control mechanism;
the pressure pipeline is annular, an annular track is arranged on the frame platform and is positioned outside the pressure pipeline, the section of the track is rectangular, a fixed groove is formed in the side surface of the track, the traveling mechanism comprises a base, a first support is arranged below the base, a traveling wheel is arranged on the first support and is positioned on the upper surface of the track, a centering wheel is arranged on the side surface of the base corresponding to the fixed groove, the traveling wheel is in transmission connection with a first motor arranged below the base, and the first motor is in signal connection with the control mechanism;
the atomizing spray mechanism comprises a stand column arranged on the base, an atomizing spray cylinder is arranged at the top end of the stand column, the stand column corresponds to the connecting pipeline and is provided with a cross rod, a turnover mechanism is arranged on the cross rod, the end portion of the turnover mechanism corresponds to the connecting pipeline and is provided with a connecting mechanism, the connecting mechanism is communicated with an atomizing spray head arranged on the atomizing spray cylinder through a connecting hose, and an axial flow fan is arranged at the tail end of the atomizing spray cylinder and is in signal connection with the control mechanism.
2. The substation above-ground transformer hybrid cooling system of claim 1, characterized in that: the spraying monitoring mechanism comprises a support arm arranged on the connecting pipeline, an ultrasonic sensor is upwards arranged at the end part of the support arm, and the ultrasonic sensor is in signal connection with the control mechanism.
3. The substation above-ground transformer hybrid cooling system of claim 1, characterized in that: the water supply mechanism comprises a water tower, the water tower is communicated with the pressure pipeline through a water pump and a water supply pipeline, a first electromagnetic valve is arranged on the connecting pipeline, and the first electromagnetic valve is in signal connection with the control mechanism.
4. The substation above-ground transformer hybrid cooling system of claim 1, characterized in that: the connecting mechanism comprises a connecting cylinder, the connecting cylinder is of a funnel-shaped structure, an elastic sealing layer is arranged on the inner surface of the connecting cylinder, and the elastic sealing layer is matched with the structure of the connecting cylinder.
5. The substation above-ground transformer hybrid cooling system of claim 4, characterized in that: the turnover mechanism comprises a second support arranged on the cross rod, a rotating shaft is rotatably arranged on the second support, an installation rod is arranged on the rotating shaft, the rotating shaft is in transmission connection with a second motor arranged on the cross rod, the front end of the installation rod is provided with the connecting cylinder, and the second motor is in signal connection with a control mechanism.
6. The substation above-ground transformer hybrid cooling system of claim 5, wherein: the atomizing spray head is arranged at the opening of the atomizing barrel, the number of the atomizing spray heads is at least four, the front end of the atomizing spray head is provided with an electrode ring, and the electrode ring is electrically connected with an electrostatic generator arranged outside the atomizing barrel.
7. The substation above-ground transformer hybrid cooling system of claim 1, characterized in that: the temperature monitoring mechanism comprises infrared temperature sensors which are arranged on the pressure pipeline and correspond to the transformer, the infrared temperature sensors are in signal connection with the control mechanism, and the temperature monitoring mechanisms are at least four and are uniformly arranged on the pressure pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711242684.6A CN107946032B (en) | 2017-11-30 | 2017-11-30 | Transformer substation ground transformer mixing cooling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711242684.6A CN107946032B (en) | 2017-11-30 | 2017-11-30 | Transformer substation ground transformer mixing cooling system |
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| CN107946032A CN107946032A (en) | 2018-04-20 |
| CN107946032B true CN107946032B (en) | 2022-10-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109817420B (en) * | 2019-04-03 | 2024-02-06 | 国网河南省电力公司方城县供电公司 | Automatic cooling system of transformer in unmanned substation |
| CN110620343B (en) * | 2019-09-20 | 2020-11-20 | 国网山东省电力公司宁阳县供电公司 | Transformer substation cooling device |
| CN115215273A (en) * | 2022-08-08 | 2022-10-21 | 广东电网有限责任公司 | Door type frame |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB371926A (en) * | 1931-01-27 | 1932-04-27 | British Electric Transformer C | Improvements in or relating to means for dissipating heat generated in electrical apparatus immersed in liquid |
| JP2000306738A (en) * | 1999-04-20 | 2000-11-02 | Toshiba Corp | Electrical equipment for electric power |
| CN201311015Y (en) * | 2008-08-05 | 2009-09-16 | 镇江同盛环保设备工程有限公司 | Movable low-hydraulic-pressure atomization temperature-reduction device |
| CN205868621U (en) * | 2016-08-11 | 2017-01-11 | 李煜菁 | Physical cooling sprayer |
| CN106900589A (en) * | 2017-03-25 | 2017-06-30 | 张景辉 | A kind of hen house temperature and humidity regulation dolly |
| CN107025981A (en) * | 2017-06-15 | 2017-08-08 | 国网山东省电力公司龙口市供电公司 | A kind of power transformer automatic spray heat sink and spraying cooling method |
| CN206471720U (en) * | 2017-02-16 | 2017-09-05 | 上海置信电气非晶有限公司 | A kind of transformer station's aeration radiation system taken into account with electric rectification |
| CN107403682A (en) * | 2017-09-20 | 2017-11-28 | 国网河南省电力公司原阳县供电公司 | A kind of transformer cooling device |
-
2017
- 2017-11-30 CN CN201711242684.6A patent/CN107946032B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB371926A (en) * | 1931-01-27 | 1932-04-27 | British Electric Transformer C | Improvements in or relating to means for dissipating heat generated in electrical apparatus immersed in liquid |
| JP2000306738A (en) * | 1999-04-20 | 2000-11-02 | Toshiba Corp | Electrical equipment for electric power |
| CN201311015Y (en) * | 2008-08-05 | 2009-09-16 | 镇江同盛环保设备工程有限公司 | Movable low-hydraulic-pressure atomization temperature-reduction device |
| CN205868621U (en) * | 2016-08-11 | 2017-01-11 | 李煜菁 | Physical cooling sprayer |
| CN206471720U (en) * | 2017-02-16 | 2017-09-05 | 上海置信电气非晶有限公司 | A kind of transformer station's aeration radiation system taken into account with electric rectification |
| CN106900589A (en) * | 2017-03-25 | 2017-06-30 | 张景辉 | A kind of hen house temperature and humidity regulation dolly |
| CN107025981A (en) * | 2017-06-15 | 2017-08-08 | 国网山东省电力公司龙口市供电公司 | A kind of power transformer automatic spray heat sink and spraying cooling method |
| CN107403682A (en) * | 2017-09-20 | 2017-11-28 | 国网河南省电力公司原阳县供电公司 | A kind of transformer cooling device |
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