CN-122012171-A - Laboratory insulating oil miniature recovery device and method

CN122012171ACN 122012171 ACN122012171 ACN 122012171ACN-122012171-A

Abstract

The invention discloses a laboratory insulating oil micro recovery device and a method, which relate to the technical field of insulating oil recovery of electric equipment, and comprise a box body and a box cover, wherein a control panel is arranged at an opening of the box body, an oil inlet is arranged on the control panel, an oil inlet pipe penetrates through the control panel and is connected to a primary filter, an oil outlet end of the primary filter is connected with a heating module through a primary filter oil pipe, and an oil outlet end of the heating module is connected to a rotator in an oil-gas separator through a heating oil pipe; the bottom of the oil-gas separator is connected with an oil drain pump through an oil drain pipe, the top is connected with a condenser through an exhaust pipe, and an extraction opening of the condenser is connected with a vacuum pump. The invention synchronously removes hydrogen, acetylene, air and water in oil under the condition of low temperature heating by organically combining heating, vacuum degassing and small-range closed loop circulation, does not need chemical additives and frequently replacing consumable materials, and has the advantages of compact structure, simple and convenient operation, good regeneration effect, low running cost, environmental protection and no pollution.

Inventors

CAO YU
SUN YUXIN
ZHANG SHENGQI
SUN JIANMING
QI GUANGHAO
ZHAO JUNSHI
CAI HUAINAN
ZHENG YONGQI
Qu Enxuan
FAN XIANG

Assignees

国网新疆电力有限公司哈密供电公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. A miniature recovery device for laboratory insulating oil, It is characterized in that the method comprises the steps of, Comprises a box body and a box cover which are rotationally connected through a hinge, The opening of the box body is provided with a control panel, the control panel is provided with an oil inlet, an oil inlet pipe is arranged in the oil inlet, and the oil inlet pipe penetrates through the control panel to extend to a primary filter in the box body; the primary filter is arranged at a position between the bottom of the box body and the control panel, a glass fiber folding filter element with the diameter of 1-3 mu m is arranged in the primary filter, and the oil outlet end of the primary filter is connected with a heating module through a primary filter oil pipe; The oil outlet end of the heating module is connected with an oil-gas separator through a heating oil pipe, a rotator is arranged in the oil-gas separator, and the oil outlet end of the heating module is connected to an oil inlet of the rotator through the heating oil pipe; the bottom of the oil-gas separator is provided with an oil drain port used for being connected with an oil drain pipe, and the oil drain pipe is connected with an oil drain pump; The air extraction port of the condenser is connected with a vacuum pump, and the liquid outlet end of the condenser is connected with a drain pipe; The oil-gas separator and the rotator are integrated into the same closed cavity, and the volume of the cavity is 500 mL-2L.
2. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The control panel is provided with a display groove, the top cover of the heating module and the top cover of the oil-gas separator are fixed in the display groove, and the side part of the display groove is respectively provided with a primary filtering hole, a heating hole, an exhaust hole and an oil drain port which are respectively used for penetrating and fixing the primary filtering oil pipe, the heating oil pipe, the exhaust pipe and the oil drain pipe; the primary filter oil pipe, the heating oil pipe, the oil drain pipe and the drain pipe are transparent hoses.
3. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The control panel is provided with a thermometer and a vacuum gauge, a temperature sensing probe of the thermometer stretches into the heating module, and the vacuum gauge is communicated with the inside of the oil-gas separator through a pipeline.
4. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The control panel is provided with a one-key starting button, a calibration button and a degassing power button; the one-key starting button is used for starting an insulating oil recovery process, and automatically executing primary filtering, heating circulation, vacuum degassing and automatic stopping processes after pressing; The calibration button is used for calibrating the vacuum degree sensor and the temperature sensor; The degassing power button is used for realizing emergency power-off control of the vacuum pump.
5. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The control panel is also provided with a power interface, a power button, a communication button and a setting interface; The power interface is used for connecting an external power supply, and the power button is used for controlling the whole start and stop of the device; The communication button is used for sending the data detected by the temperature sensor and the vacuum sensor to the terminal for display; the setting interface is used for connecting an external terminal so as to carry out parameter configuration on the insulating oil recovery flow.
6. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The heating module comprises a fixing frame fixed in the box body through bolts, a fixing cavity is formed in the fixing frame, a heating rod is arranged in the fixing cavity, and the heating oil pipe is connected with the fixing frame through a compression flange and a sealing ring.
7. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The heating rod is a totally-enclosed immersed stainless steel PTC constant temperature heating rod, and low-temperature heating at 40-60 ℃ is realized through PTC ceramic self-limiting temperature characteristics.
8. A laboratory insulation oil micro-recycling device according to claim 1, It is characterized in that the method comprises the steps of, The cooling medium of the condenser is circulating water or air cooling, and the liquid outlet end of the condenser is connected with a drain pipe.
9. A laboratory insulation oil micro-recycling device according to claim 2, It is characterized in that the method comprises the steps of, The rotator adopts a lateral tangential eccentric oil inlet diversion cavity structure, and the inlet direction of the rotator is eccentrically arranged with the axis of the cavity.
10. A laboratory insulating oil micro-recovery method, which adopts the laboratory insulating oil micro-recovery device according to any one of claims 1 to 9, The method is characterized by comprising the following steps of: Step S1, oil feeding and primary filtering, Waste oil to be recovered enters a primary filter through an oil inlet pipe, impurities are removed, and then the waste oil enters a heating module for preheating and viscosity reduction; step S2, heating and circulating, The heating module heats the oil to 40-60 ℃ and performs constant temperature control, and the heated insulating oil is sent into the rotator; step S3, cyclone atomization and gas-liquid separation, The insulating oil enters a rotator to form rotational flow and is dispersed into a semi-mist thin layer, under the continuous suction effect of a vacuum pump, the inside of an oil-gas separator is kept in a micro negative pressure state, gas and moisture dissolved in the oil rapidly escape, water vapor is cooled and liquefied by a condenser and then is discharged, and the gas is pumped out by the vacuum pump; And S4, discharging oil, wherein the treated oil is collected at the bottom of the oil-gas separator under the action of gravity and is discharged by an oil discharge pump through an oil discharge pipe.

Description

Laboratory insulating oil miniature recovery device and method Technical Field The invention belongs to the technical field of insulating oil recovery of power equipment, and particularly relates to a laboratory insulating oil miniature recovery device and method. Background In the process of detecting and analyzing the insulating oil of the power equipment, a plurality of tests such as simplified experiments, oil chromatographic analysis and the like are usually required to be carried out, and a large amount of waste oil is generated after the experiments. The waste oil often contains dissolved gas (such as hydrogen, acetylene and air), trace moisture and solid particle impurities, so that the breakdown voltage of the waste oil is reduced, the dielectric loss is increased, and the waste oil cannot be directly used as experimental oil or blank oil for repeated use. At present, the regeneration treatment of insulating oil mainly depends on large-scale oil filtering equipment, and the equipment generally adopts a combined process of high-temperature heating (more than 90 ℃) and vacuum degassing and filtering, and is suitable for field maintenance of large-scale power equipment such as a main transformer and the like. The following disadvantages exist in applying it directly to laboratory scenarios: 1. The large-scale oil filter equipment has huge volume and unmatched treatment capacity, the single treatment capacity of the large-scale oil filter equipment is usually tens of liters to hundreds of liters, and the waste oil in a laboratory is mostly hundreds of milliliters to hundreds of liters, so that energy waste and inconvenient operation are caused, and the efficient recovery of a trace amount of oil sample in the laboratory is difficult to realize. 2. The high temperature treatment is easy to cause oil aging, large equipment is mostly heated at high temperature to improve the degassing efficiency, but laboratory oil sample quantity is small, heat capacity is low, high temperature is easy to cause oil oxidation and light component volatilization, and on the contrary, the quality of the oil is reduced, and the requirement of experimental oil on the stability of the oil cannot be met. 3. The method relies on chemical regeneration or consumable frequent replacement, wherein part of the prior art adopts clay, activated carbon or chemical additives for adsorption regeneration, so that secondary pollution risks exist, consumable replacement is frequent, the use cost and maintenance burden are increased, and the method does not accord with the development direction of environmental protection in a laboratory. 4. The existing miniaturized device has single function and poor compatibility, has dehydration or filtration functions, is difficult to simultaneously process and simplify experimental waste oil and chromatographic experimental waste oil, cannot effectively remove dissolved gas (such as hydrogen and acetylene) and trace moisture, and cannot realize the omnibearing regeneration and reuse of the waste oil. Therefore, the field needs to be provided with a special insulating oil micro recovery device for laboratory scenes, can realize the integrated treatment of low-temperature heating, dynamic vacuum degassing and physical regeneration under the condition of small volume, does not need chemical additives and consumable materials to be replaced frequently, and meets the actual demands of high efficiency, environmental protection and low cost recycling of laboratory waste oil. Disclosure of Invention The technical problems to be solved by the invention are to solve the defects in the prior art, design a laboratory insulating oil micro recovery device, integrate a heating module, a rotator and an oil-gas separator into a 500 mL-2L closed cavity, realize 40-60 ℃ low-temperature heating by matching with a PTC constant-temperature heating rod, realize unpowered lateral tangential eccentric rotational flow atomization and dynamic vacuum degassing by combining a vacuum pump and a condenser, synchronously remove hydrogen, acetylene, air and water in oil in a physical regeneration process, realize oil way visual monitoring by adopting a transparent hose, integrate a one-key start, calibration and calibration of a control panel, a vacuum pump emergency stop button and a data communication and terminal setting interface, intercept solid impurities by a primary filter, realize efficient, low-temperature and low-cost recycling of laboratory trace insulating waste oil by adopting a compact structure, and solve the technical problems that the existing large-scale oil filtering equipment is not matched in treatment capacity, easy to cause oil aging, depends on the chemical additives and frequent consumable materials and single function and cannot be compatible with multiple types of waste oil. The invention solves the technical problems by adopting the following scheme: a miniature recovery device for laboratory insulating oil,