Transformer insulating oil adsorbent automatic purification device and use method

Abstract

The present invention discloses an automatic purification device for transformer insulating oil adsorbent and a method for using the device, including a tank body, an air circuit system, an oil circuit system, an adsorption device and an electric heater; the air circuit system passes through the tank body in the vertical direction and cooperates with the tank body; the oil circuit system passes through the tank body in the horizontal direction and cooperates with the tank body; the adsorption device is connected to the inside of the tank body, and adsorbent is placed inside the adsorption device; the electric heater is arranged on the top of the tank body and connected and cooperates with a thermal resistor; the thermal resistor is arranged inside the adsorption device and contacts and cooperates with the adsorbent. The device is equipped with a heating device in the adsorbent, and a high-precision pressure sensor is arranged at the oil circuit pipe mouth. The pressure change is linked to the amount of impurities in the adsorbent through experiments. The impurities in the adsorbent are heated and burned through automatic control supported by data, which solves the problem that the prior art cannot work online and can only be shut down to disassemble and replace the adsorbent. It has the characteristics of high degree of automation, can clean impurities online, and greatly reduces labor intensity.

Description

Technical Field

[0001] The invention belongs to the field of power station insulating oil processing equipment, and in particular relates to a transformer insulating oil adsorbent automatic purification device and a use method thereof. Background Art

[0002] In the power system, substations are major oil users. The main waste of substations includes waste transformer oil. With increasingly stringent environmental protection requirements, the complexity and ambiguity of the main hazardous substances in waste oils and the increasing dosage of toxic additives have restricted the treatment and regeneration of oil products. At present, there is a lack of unified evaluation methods and standards for the scrapping of severely deteriorated transformer oils in China, a lack of scientific classification and grading management of scrapped and discontinued transformer oils of different types and degrees of deterioration, and a lack of correct understanding of the harm of returned transformer oils to the environment, which seriously affects and restricts the further recycling and safe disposal of oil products.

[0003] Most of the domestic methods for treating deteriorated transformer oil are to use the traditional acid-alkali clay method for regeneration, which is labor-intensive, time-consuming, and polluting the environment. Some of the more advanced treatment methods currently available often use various adsorbents or adsorption devices to adsorb and remove impurities from insulating oil.

[0004] For example, the XDK adsorbent adsorption treatment technology for deteriorated transformer oil disclosed in the invention patent with patent number "CN 101406824 A" adopts a new adsorbent to adsorb impurities in the insulating oil; for example, the patent with patent number "CN 2589048Y" discloses an electric purification insulating oil purification device, which adopts an electric purification device, and a dust-collecting synthetic fiber is arranged inside as a dust removal medium, and the impurities in the insulating oil are adsorbed by electric adsorption; another example is the patent with patent number "CN208131261 U", which discloses an insulating oil purification treatment system that adsorbs impurities through a magnetic device, and uses a magnetic adsorption device to adsorb and collect impurities using magnetic force.

[0005] However, the above designs all have the same problem. Whether it is the adsorbent or the adsorption device, as the operating time increases, it will adsorb a large amount of impurities during the working process, which will lead to a decrease in adsorption efficiency or even complete failure. And the above designs cannot provide online cleaning of impurities without stopping the machine. It is necessary to stop the machine, disassemble the device, manually replace the adsorbent, or clean the adsorption device. This process is not only time-consuming and labor-intensive, resulting in material waste, but also causes a large number of process accumulations, affecting the normal operation of the transformer. Therefore, it is very necessary to design a device to realize adsorbent working status monitoring and adsorbent automatic purification, and to realize online purification of adsorbent or cleaning of adsorption device without stopping the machine. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an automatic purification device for transformer insulating oil adsorbent and a method for using the device. The device is equipped with a heating device in the adsorbent and a high-precision pressure sensor is arranged at the oil pipe mouth. The pressure change is linked to the amount of impurities in the adsorbent through experiments. The impurities in the adsorbent are heated and incinerated through data-supported automatic control, which solves the problem that the prior art cannot work online and can only be shut down to disassemble and replace the adsorbent. The device has the characteristics of high degree of automation, can clean impurities online, and greatly reduces labor intensity.

[0007] In order to realize the above-mentioned design, the technical scheme adopted by the present invention is: a transformer insulating oil adsorbent automatic purification device, which includes a tank body, an air circuit system, an oil circuit system, an adsorption device and an electric heater; the air circuit system passes through the interior of the tank body in the vertical direction and cooperates with the tank body; the oil circuit system passes through the tank body in the horizontal direction and cooperates with the tank body; the adsorption device is connected to the interior of the tank body, and the adsorbent is placed inside the adsorption device; the electric heater is arranged on the top of the tank body and connected and cooperated with the thermal resistor; the thermal resistor is arranged inside the adsorption device and contacts and cooperates with the adsorbent.

[0008] The tank body is a hollow rectangular parallelepiped structure, and a raised heat dissipation plate is connected to the front surface.

[0009] The air circuit system comprises an air inlet pipe, an air pump and an exhaust pipe; the air inlet pipe is connected to the upper surface of the tank body, the air inlet end of the air pump is connected to the lower surface of the tank body, and the exhaust pipe is connected to the air outlet end of the air pump.

[0010] A filter screen is arranged on the cross section of the air inlet pipe.

[0011] One end of the exhaust pipe is connected to the dust collector.

[0012] The oil circuit system comprises an oil inlet pipe and an oil outlet pipe; the oil inlet pipe is connected to one side of the tank body, and the oil outlet pipe is connected to the other side opposite to the tank body.

[0013] The adsorption device comprises a rectangular area surrounded by a mesh plate; a vibration motor is connected to one side of the mesh plate, and the top of the vibration motor is connected to the inner wall of the tank body.

[0014] Valves are arranged on the gas circuit system and the oil circuit system; a first pressure sensor is arranged in the orifice of the oil inlet pipe, and a second pressure sensor is arranged in the orifice of the oil outlet pipe.

[0015] The upper surface of the tank is connected with a controller; the first pressure sensor and the second pressure sensor are connected to the input end of the controller; the electric heater and the vibration motor are connected to the output end of the controller.

[0016] The method for using the transformer insulating oil adsorbent automatic purification device as described above comprises the following steps:

[0017] S1, through experiments, the impurity content in the adsorbent is linked to the pressure values ​​of the inlet and outlet oil ports, and a correlation function is established to set the relevant sensors and controllers;

[0018] S2, in normal operation, the inlet and outlet are closed; the difference between the pressure at the oil inlet pipe and the pressure at the oil outlet pipe is used to determine whether adsorbent purification is required;

[0019] S3, when purification is required, close the valve of the oil inlet pipe, open the air inlet pipe, drain the insulating oil inside the tank, and then close the valve of the oil outlet pipe;

[0020] S4, turn on the vacuum pump to fill the tank with air, and then close the air inlet pipe and the vacuum pump;

[0021] S5, turn on the electric heater and set the heating temperature to be lower than the ignition point or melting point of the adsorbent material; heat and burn the impurities in the adsorbent through the thermal resistor. After a certain period of time, turn off the heater and accelerate the heat dissipation and cooling through the heat dissipation plate;

[0022] S6, open the air inlet pipe, the air pump and the exhaust pipe, and start the vibration motor to shake off the burning ash and smoke inside the adsorption device, and pump them out of the tank through the air path system and enter the dust collector for collection and treatment;

[0023] S7, close the valve of the gas system, open the valve of the oil inlet pipe and the valve of the oil outlet pipe, and reconnect the tank to the insulating oil purification cycle.

[0024] A transformer insulating oil adsorbent automatic purification device includes a tank body, an air circuit system, an oil circuit system, an adsorption device and an electric heater; the air circuit system passes through the tank body vertically and cooperates with the tank body; the oil circuit system passes through the tank body horizontally and cooperates with the tank body; the adsorption device is connected to the tank body, and adsorbent is placed inside the adsorption device; the electric heater is arranged on the top of the tank body and connected and cooperates with a thermal resistor; the thermal resistor is arranged inside the adsorption device and contacts and cooperates with the adsorbent. The device is equipped with a heating device in the adsorbent, and a high-precision pressure sensor is arranged at the oil circuit pipe mouth. The pressure change is linked to the amount of impurities in the adsorbent through experiments. The impurities in the adsorbent are heated and burned through automatic control supported by data. The device has a high degree of automation and can clean impurities online, greatly reducing labor intensity.

[0025] In the preferred solution, the tank body is a hollow rectangular parallelepiped structure, and a raised heat sink is connected to the front surface. The structure is simple, and when in use, the heat sink is used to dissipate heat faster after the heating and incineration is completed, so as to avoid excessive temperature inside the tank body, thereby affecting the re-injection of insulating oil.

[0026] In the preferred solution, the air circuit system includes an air inlet pipe, an air pump and an exhaust pipe; the air inlet pipe is connected to the upper surface of the tank body, the air inlet end of the air pump is connected to the lower surface of the tank body, and the exhaust pipe is connected to the air outlet end of the air pump. The structure is simple. When in use, the air inlet pipe is used to inhale air so that there is enough oxygen inside the tank body for impurities to burn; the air pump is used to draw in air and also plays a role in extracting impurities from the exhaust pipe after combustion.

[0027] In the preferred solution, a filter screen is installed on the cross section of the air inlet pipe. The structure is simple, and when in use, the filter screen can effectively block the impurity particles in the external air, thereby improving the effect of the impurity removal work.

[0028] In the preferred solution, one end of the exhaust pipe is connected to the dust collector. The structure is simple. When in use, the dust collector uses the Yilan YL-3001A dust recovery device; the smoke and ash after combustion are drawn out from the exhaust pipe and enter the dust collector for treatment, preventing direct discharge into the atmosphere to cause environmental pollution, thereby improving the environmental protection of the device.

[0029] In the preferred solution, the oil system includes an oil inlet pipe and an oil outlet pipe; the oil inlet pipe is connected to one side of the tank body, and the oil outlet pipe is connected to the other side of the tank body. The structure is simple, and when in use, when adsorbent purification is required, the oil inlet pipe is closed, and the insulating oil inside is pumped out from the oil outlet pipe to provide a working environment for heating and incineration operations.

[0030] In a preferred solution, the adsorption device includes a rectangular area surrounded by a mesh plate. The structure is simple, and when in use, the mesh plate is provided with mesh holes of a suitable size to allow the insulating oil to pass through while preventing the adsorbent from leaking into the insulating oil.

[0031] In the preferred solution, a vibration motor is connected to one side of the mesh plate, and the top of the vibration motor is connected to the inner wall of the tank. The structure is simple. When in use, the vibration motor is selected as the RF-385 model; the vibration motor is used in conjunction with an electric heater, and it vibrates while heating, which is conducive to the ash and dust falling out of the mesh plate and the impurity removal work.

[0032] In the preferred solution, valves are provided on both the gas circuit system and the oil circuit system; a first pressure sensor is provided in the oil inlet pipe orifice, and a second pressure sensor is provided in the oil outlet pipe orifice. The structure is simple, and when in use, the sensor uses the JY-P300 oil pressure sensor; when the impurity content in the adsorbent increases, the pressure value of the insulating oil passing through the oil pipeline will change accordingly, and the change law is determined through experiments, and the pressure value is set; when the pressure value reaches the set value, the valve of the closed oil circuit system is controlled, and the oil is pumped out and heated and incinerated for dust removal. The automation is high, and there is no need to disassemble the tank to replace the adsorbent, realizing automatic purification of the adsorbent online without stopping the machine.

[0033] In the preferred solution, the upper surface of the tank is connected with a controller; the first pressure sensor and the second pressure sensor are connected to the input end of the controller; the electric heater and the vibration motor are connected to the output end of the controller. The structure is simple. When in use, the controller uses a Siemens S7-300 PLC controller, and a keyboard device and a display can be optionally installed to cooperate with it.

[0034] In a preferred embodiment, the method for using the above transformer insulating oil adsorbent automatic purification device comprises the following steps:

[0035] S1, through experiments, the impurity content in the adsorbent is linked to the pressure values ​​of the inlet and outlet oil ports, and a correlation function is established to set the relevant sensors and controllers;

[0036] S2, in normal operation, the inlet and outlet are closed; the difference between the pressure at the oil inlet pipe and the pressure at the oil outlet pipe is used to determine whether adsorbent purification is required;

[0037] S3, when purification is required, close the valve of the oil inlet pipe, open the air inlet pipe, drain the insulating oil inside the tank, and then close the valve of the oil outlet pipe;

[0038] S4, turn on the vacuum pump to fill the tank with air, and then close the air inlet pipe and the vacuum pump;

[0039] S5, turn on the electric heater and set the heating temperature to be lower than the ignition point or melting point of the adsorbent material; heat and burn the impurities in the adsorbent through the thermal resistor. After a certain period of time, turn off the heater and accelerate the heat dissipation and cooling through the heat dissipation plate;

[0040] S6, open the air inlet pipe, the air pump and the exhaust pipe, and start the vibration motor to shake off the burning ash and smoke inside the adsorption device, and pump them out of the tank through the air path system and enter the dust collector for collection and treatment;

[0041] S7, close the valve of the gas system, open the valve of the oil inlet pipe and the valve of the oil outlet pipe, and reconnect the tank to the insulating oil purification cycle.

[0042] A transformer insulating oil adsorbent automatic purification device and a method of use, comprising a tank body, an air circuit system, an oil circuit system, an adsorption device and an electric heater; the air circuit system passes through the tank body in the vertical direction and cooperates with the tank body; the oil circuit system passes through the tank body in the horizontal direction and cooperates with the tank body; the adsorption device is connected to the tank body, and an adsorbent is placed inside the adsorption device; the electric heater is arranged on the top of the tank body and connected and cooperates with a thermal resistor; the thermal resistor is arranged inside the adsorption device and contacts and cooperates with the adsorbent. The device is equipped with a heating device in the adsorbent, and a high-precision pressure sensor is arranged at the oil circuit pipe mouth. The pressure change is linked to the amount of impurities in the adsorbent through experiments. The impurities in the adsorbent are heated and burned through automatic control supported by data, which solves the problem that the existing technology cannot work online and can only be shut down to disassemble and replace the adsorbent. It has the characteristics of high degree of automation, can clean impurities online, and greatly reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the external structure of the present invention.

[0044] Figure 2 It is a schematic diagram of the main internal structure of the present invention.

[0045] Figure 3 It is a schematic diagram of the structure of the adsorption device in the present invention.

[0046] Figure 4 It is a schematic diagram of the wiring diagram and ladder diagram of the controller in the present invention.

[0047] Figure 5 This is a test data table of the changes in impurity content and pressure value in the adsorbent of the present invention.

[0048] Figure 6 It is a curve diagram showing the relationship between the impurity content in the adsorbent and the pressure value in the present invention.

[0049] The reference numerals in the figure are: tank body 1, heat sink 11, air inlet pipe 21, vacuum pump 22, exhaust pipe 23, filter screen 24, oil inlet pipe 31, oil outlet pipe 32, adsorption device 4, mesh plate 41, electric heater 5, thermal resistor 51, dust collector 6, vibration motor 7, first pressure sensor 81, second pressure sensor 82, controller 9. DETAILED DESCRIPTION

[0050] like Figures 1 to 6In the figure, a transformer insulating oil adsorbent automatic purification device includes a tank body 1, an air circuit system, an oil circuit system, an adsorption device 4 and an electric heater 5; the air circuit system passes through the tank body 1 vertically and cooperates with the tank body 1; the oil circuit system passes through the tank body 1 horizontally and cooperates with the tank body 1; the adsorption device 4 is connected to the tank body 1, and an adsorbent is placed inside the adsorption device 4; the electric heater 5 is arranged on the top of the tank body 1 and is connected and cooperated with the thermal resistor 51; the thermal resistor 51 is arranged inside the adsorption device 4 and contacts and cooperates with the adsorbent. The device is equipped with a heating device in the adsorbent, and a high-precision pressure sensor is arranged at the oil circuit pipe mouth. The pressure change is linked to the impurity amount in the adsorbent through experiments. The impurities in the adsorbent are heated and burned through automatic control supported by data. The device has a high degree of automation and can clean impurities online, which greatly reduces the labor intensity.

[0051] In the preferred solution, the tank body 1 is a hollow rectangular parallelepiped structure, and the front surface is connected with a raised heat sink 11. The structure is simple, and when in use, the heat sink 11 is used to dissipate heat faster after the heating and incineration is completed, so as to avoid the internal temperature of the tank body 1 being too high, thereby affecting the re-injection of insulating oil.

[0052] In the preferred solution, the air circuit system includes an air inlet pipe 21, an air pump 22 and an exhaust pipe 23; the air inlet pipe 21 is connected to the upper surface of the tank body 1, the air inlet end of the air pump 22 is connected to the lower surface of the tank body 1, and the exhaust pipe 23 is connected to the air outlet end of the air pump 22. The structure is simple. When in use, the air inlet pipe 21 is used to inhale air so that there is enough oxygen inside the tank body 1 for impurities to burn; the air pump 22 is used to draw in air and also plays a role in extracting impurities from the exhaust pipe 23 after combustion.

[0053] In the preferred solution, a filter screen 24 is installed on the cross section of the air inlet pipe 21. The structure is simple, and when in use, the filter screen 24 can effectively block foreign particles in the external air, thereby improving the effect of the impurity removal work.

[0054] In the preferred solution, one end of the exhaust pipe 23 is connected to the dust collector 6. The structure is simple. When in use, the dust collector 6 uses the Yilan YL-3001A dust recovery device; the smoke and ash after combustion are extracted from the exhaust pipe 23 and enter the dust collector 6 for treatment, preventing direct discharge into the atmosphere to cause environmental pollution, thereby improving the environmental protection of the device.

[0055] In the preferred solution, the oil system includes an oil inlet pipe 31 and an oil outlet pipe 32; the oil inlet pipe 31 is connected to one side of the tank body 1, and the oil outlet pipe 32 is connected to the other side opposite to the tank body 1. The structure is simple, and when in use, when adsorbent purification is required, the oil inlet pipe 31 is closed, and the insulating oil inside is pumped out from the oil outlet pipe 32 to provide a working environment for heating and incineration operations.

[0056] In a preferred embodiment, the adsorption device 4 includes a rectangular area surrounded by a mesh plate 41. The structure is simple, and when in use, the mesh plate 41 is provided with mesh holes of a suitable size to allow the insulating oil to pass through while preventing the adsorbent from leaking into the insulating oil.

[0057] In the preferred solution, a vibration motor 7 is connected to one side of the mesh plate 41, and the top of the vibration motor 7 is connected to the inner wall of the tank body 1. The structure is simple, and when in use, the vibration motor 7 is selected as the RF-385 model; the vibration motor 7 is used in conjunction with the electric heater 5, and vibrates while heating, which is conducive to the ash and dust falling out of the mesh plate 41 and the impurity removal work.

[0058] In the preferred solution, valves are provided on both the gas circuit system and the oil circuit system; a first pressure sensor 81 is provided in the orifice of the oil inlet pipe 31, and a second pressure sensor 82 is provided in the orifice of the oil outlet pipe 32. The structure is simple, and when in use, the sensor uses the JY-P300 oil pressure sensor; when the impurity content in the adsorbent increases, the pressure value of the insulating oil passing through the oil circuit pipeline will change accordingly, and the change law is determined by experiment, and the pressure value is set; when the pressure value reaches the set value, the valve of the closed oil circuit system is controlled, and the oil is pumped out and heated and incinerated for dust removal. The automation is high, and the adsorbent does not need to be disassembled to replace the tank body 1, and the adsorbent is automatically purified online without stopping the machine.

[0059] In the preferred solution, the upper surface of the tank body 1 is connected with a controller 9; the first pressure sensor 81 and the second pressure sensor 82 are connected to the input end of the controller 9; the electric heater 5 and the vibration motor 7 are connected to the output end of the controller 9. The structure is simple, and when in use, the controller 9 uses a Siemens S7-300 PLC controller, and a keyboard device and a display can be optionally installed to cooperate with it.

[0060] In a preferred embodiment, the method for using the above-mentioned transformer insulating oil adsorbent automatic purification device comprises the following steps:

[0061] S1, through experiments, the impurity content in the adsorbent is linked to the pressure values ​​of the oil inlet and outlet, and a correlation function is established to set the relevant sensors and controller 9;

[0062] S2, during normal operation, the inlet and outlet ports are closed; the difference between the pressure at the oil inlet pipe 31 and the pressure at the oil outlet pipe 32 is used to determine whether adsorbent purification is required;

[0063] S3, when purification is required, close the valve of the oil inlet pipe 31, open the air inlet pipe 21, drain the insulating oil inside the tank body 1, and then close the valve of the oil outlet pipe 32;

[0064] S4, turn on the air pump 22 to fill the tank 1 with air, and then close the air inlet pipe 21 and the air pump 22;

[0065] S5, turn on the electric heater 5, set the heating temperature to be lower than the ignition point or melting point of the adsorbent material; heat and burn the impurities in the adsorbent through the thermal resistor 51, and after a certain period of time, turn off the heater, and accelerate the heat dissipation and cooling through the heat dissipation plate 11;

[0066] S6, open the air inlet pipe 21, the air pump 22 and the exhaust pipe 23, and start the vibration motor 7 to shake off the burning ash and smoke inside the adsorption device 4, and pump them out of the tank body 1 through the air path system and enter the dust collector 6 for collection and treatment;

[0067] S7, close the valve of the gas circuit system, open the valve of the oil inlet pipe 31 and the valve of the oil outlet pipe 32, and connect the tank body 1 to the insulating oil purification cycle again.

[0068] When the transformer insulating oil adsorbent automatic purification device as described above is installed and used, the gas circuit system passes through the tank body 1 vertically and cooperates with the tank body 1; the oil circuit system passes through the tank body 1 horizontally and cooperates with the tank body 1; the adsorption device 4 is connected to the tank body 1, and the adsorption device 4 is placed inside the adsorption device 4; the electric heater 5 is set on the top of the tank body 1 and connected and cooperates with the thermal resistor 51; the thermal resistor 51 is set inside the adsorption device 4 and contacts and cooperates with the adsorbent. The device is equipped with a heating device in the adsorbent, and a high-precision pressure sensor is set at the oil pipe mouth. Through experiments, the pressure change is linked to the amount of impurities in the adsorbent. Through data-supported automatic control, the impurities in the adsorbent are heated and burned. The device has a high degree of automation and can clean impurities online, greatly reducing labor intensity.

[0069] When in use, the tank body 1 is a hollow rectangular structure, and a raised heat sink 11 is connected to the front surface. The heat sink 11 is used to dissipate heat faster after the heating and incineration is completed to prevent the internal temperature of the tank body 1 from being too high, thereby affecting the re-injection of insulating oil.

[0070] When in use, the air path system includes an air intake pipe 21, an air pump 22 and an exhaust pipe 23; the air intake pipe 21 is connected to the upper surface of the tank body 1, the air intake end of the air pump 22 is connected to the lower surface of the tank body 1, and the exhaust pipe 23 is connected to the air outlet end of the air pump 22. The air intake pipe 21 is used to inhale air so that there is enough oxygen inside the tank body 1 for impurities to burn; the air pump 22 is used to draw in air and also to extract the impurities after combustion from the exhaust pipe 23.

[0071] When in use, a filter screen 24 is installed on the cross section of the air inlet pipe 21. The filter screen 24 can effectively block foreign particles in the external air, thereby improving the effect of the impurity removal work.

[0072] When in use, one end of the exhaust pipe 23 is connected to the dust collector 6, and the dust collector 6 uses the Yilan YL-3001A dust recovery device; the smoke and ash after combustion are extracted from the exhaust pipe 23 and enter the dust collector 6 for treatment, preventing direct discharge into the atmosphere to cause environmental pollution, thereby improving the environmental protection of the device.

[0073] When in use, the oil circuit system includes an oil inlet pipe 31 and an oil outlet pipe 32; the oil inlet pipe 31 is connected to one side of the tank body 1, and the oil outlet pipe 32 is connected to the other side of the tank body 1. When adsorbent purification is required, the oil inlet pipe 31 is closed and the insulating oil inside is extracted from the oil outlet pipe 32 to provide a working environment for heating and incineration operations.

[0074] When in use, the adsorption device 4 includes a rectangular area surrounded by a mesh plate 41. The mesh plate 41 is provided with mesh holes of a suitable size to allow the insulating oil to pass through while preventing the adsorbent from leaking into the insulating oil.

[0075] When in use, a vibration motor 7 is connected to one side of the mesh plate 41, and the top of the vibration motor 7 is connected to the inner wall of the tank body 1. The vibration motor 7 uses the RF-385 model; the vibration motor 7 is used in conjunction with the electric heater 5, and it vibrates while heating, which is conducive to the ash and dust falling out of the mesh plate 41 and the impurity removal work.

[0076] When in use, valves are provided on both the gas circuit system and the oil circuit system; a first pressure sensor 81 is provided in the nozzle of the oil inlet pipe 31, and a second pressure sensor 82 is provided in the nozzle of the oil outlet pipe 32. The sensor is a JY-P300 oil pressure sensor; when the impurity content in the adsorbent increases, the pressure value of the insulating oil passing through the oil pipeline will change accordingly. The change law is determined through experiments, and the pressure value is set; when the pressure value reaches the set value, the valve of the closed oil circuit system is controlled, and the oil is pumped out for heating, incineration and dust removal. The system has a high degree of automation and does not need to disassemble the tank body 1 to replace the adsorbent, thereby realizing automatic purification of the adsorbent online without stopping the machine.

[0077] When in use, a controller 9 is connected to the upper surface of the tank body 1; the first pressure sensor 81 and the second pressure sensor 82 are connected to the input end of the controller 9; the electric heater 5 and the vibration motor 7 are connected to the output end of the controller 9. The controller 9 uses a Siemens S7-300 PLC controller, and a keyboard device and a display can be optionally installed to cooperate with it.

[0078] When in use, the impurity content in the adsorbent is linked to the pressure value of the oil inlet and outlet through experiments, and a correlation function is established to set the relevant sensors and controller 9; during normal operation, the inlet and outlet are closed; the difference between the pressure at the oil inlet pipe 31 and the pressure at the oil outlet pipe 32 is used to determine whether the adsorbent needs to be purified; when purification is required, the valve of the oil inlet pipe 31 is closed, the air inlet pipe 21 is opened, the insulating oil inside the tank body 1 is drained, and then the valve of the oil outlet pipe 32 is closed; then the vacuum pump 22 is turned on to fill the tank body 1 with air, and then the air inlet pipe 21 and the vacuum pump 22 are closed; then the electric heater is turned on 5. Set the heating temperature to be lower than the ignition point or melting point of the adsorbent material; heat and burn the impurities in the adsorbent through the thermal resistor 51. After a certain period of time, turn off the heater, and accelerate the heat dissipation and cooling through the heat sink 11; then open the air inlet pipe 21, the air pump 22 and the exhaust pipe 23, and start the vibration motor 7 at the same time, shake off the burning ashes and smoke inside the adsorption device 4, and draw them out of the tank body 1 through the air path system, and enter the dust collector 6 for collection and treatment; after purification is completed, close the valve of the air path system, open the valve of the oil inlet pipe 31 and the valve of the oil outlet pipe 32, and reconnect the tank body 1 to the insulating oil purification cycle.

[0079] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for using a transformer insulating oil adsorbent automatic purification device, characterized in that: The device comprises a tank body (1), an air circuit system, an oil circuit system, an adsorption device (4) and an electric heater (5); the air circuit system vertically passes through the tank body (1) and cooperates with the tank body (1); the oil circuit system horizontally passes through the tank body (1) and cooperates with the tank body (1); the adsorption device (4) is connected to the tank body (1), and an adsorbent is placed inside the adsorption device (4); the electric heater (5) is arranged on the top of the tank body (1) and is connected to and cooperates with a thermal resistor (51); the thermal resistor (51) is arranged inside the adsorption device (4) and is in contact with the adsorbent; the gas path system includes an air intake pipe (21), an air extraction pump (22) and an exhaust pipe (23); the air intake pipe (21) is connected to the upper surface of the tank body (1), the air intake end of the air extraction pump (22) is connected to the lower surface of the tank body (1), and the exhaust pipe (23) is connected to the air outlet end of the air extraction pump (22); a filter screen (24) is installed on the cross section of the air intake pipe (21), and one end of the exhaust pipe (23) is connected to the dust collector (6); The method for using the above transformer insulating oil adsorbent automatic purification device comprises the following steps: S1, through experiments, the impurity content in the adsorbent is linked to the pressure values ​​of the oil inlet and outlet, and a correlation function is established to set the relevant sensors and controllers (9); S2, during normal operation, the air inlet and outlet are both closed; the difference between the pressure at the oil inlet pipe (31) and the pressure at the oil outlet pipe (32) is used to determine whether adsorbent purification is required; S3, when purification is required, close the valve of the oil inlet pipe (31), open the air inlet pipe (21), drain the insulating oil inside the tank body (1), and then close the valve of the oil outlet pipe (32); S4, turning on the air pump (22) to fill the interior of the tank body (1) with air, and then closing the air inlet pipe (21) and the air pump (22); S5, turning on the electric heater (5) and setting the heating temperature to be lower than the ignition point or melting point of the adsorbent material; heating and burning the impurities in the adsorbent through the thermal resistor (51); after a certain period of time, turning off the heater and accelerating the heat dissipation and cooling through the heat dissipation plate (11); S6, opening the air inlet pipe (21), the air pump (22) and the exhaust pipe (23), and at the same time starting the vibration motor (7) to shake off the combustion ash and smoke inside the adsorption device (4), and pump them out of the tank body (1) through the air path system and enter the dust collector (6) for collection and treatment; S7, close the valve of the gas circuit system, open the valve of the oil inlet pipe (31) and the valve of the oil outlet pipe (32), and connect the tank body (1) to the insulating oil purification cycle again.

2. The method for using the transformer insulating oil adsorbent automatic purification device according to claim 1, characterized in that: The tank body (1) is a hollow rectangular parallelepiped structure, and a protruding heat dissipation plate (11) is connected to the front surface.

3. The method for using the transformer insulating oil adsorbent automatic purification device according to claim 1, characterized in that: The oil circuit system comprises an oil inlet pipe (31) and an oil outlet pipe (32); the oil inlet pipe (31) is connected to one side of the tank body (1), and the oil outlet pipe (32) is connected to the other side of the tank body (1) opposite thereto.

4. The method for using the transformer insulating oil adsorbent automatic purification device according to claim 1, characterized in that: The adsorption device (4) comprises a rectangular area surrounded by a mesh plate (41); a vibration motor (7) is connected to one side of the mesh plate (41), and the top of the vibration motor (7) is connected to the inner wall of the tank body (1).

5. The method for using the transformer insulating oil adsorbent automatic purification device according to claim 1, characterized in that: Valves are provided on both the gas circuit system and the oil circuit system; a first pressure sensor (81) is provided in the pipe opening of the oil inlet pipe (31), and a second pressure sensor (82) is provided in the pipe opening of the oil outlet pipe (32).

6. The method for using the transformer insulating oil adsorbent automatic purification device according to claim 1, characterized in that: The upper surface of the tank body (1) is connected to a controller (9); the first pressure sensor (81) and the second pressure sensor (82) are connected to the input end of the controller (9); and the electric heater (5) and the vibration motor (7) are connected to the output end of the controller (9).

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