CN214260984U

CN214260984U - Insulating oil vacuum oil filter with automatic monitoring and alarming functions

Info

Publication number: CN214260984U
Application number: CN202023287679.7U
Authority: CN
Inventors: 张祖明
Original assignee: Chongqing Lushun Scientific & Technological Development Co ltd
Current assignee: Chongqing Lushun Scientific & Technological Development Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-24
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an insulating oil vacuum oil filter capable of automatically monitoring and alarming, which comprises a first-stage filtering mechanism, a flow switch, a heater, a vacuum separator, a second-stage filtering mechanism, a controller and an alarming device, wherein an oil inlet variable frequency pump and an oil inlet temperature transmitter are arranged on an oil inlet pipeline of the first-stage filtering mechanism, the heater is provided with a heating temperature transmitter, an oil outlet variable frequency pump is arranged between the vacuum separator and the second-stage filtering mechanism, and an oil outlet temperature transmitter is arranged on an oil outlet pipeline of the second-stage filtering mechanism; the alarm device, the flow switch, the heater, the vacuum separator, the oil inlet variable frequency pump, the oil outlet variable frequency pump, the oil inlet temperature transmitter, the heating temperature transmitter and the oil outlet temperature transmitter are respectively electrically connected with the controller. The utility model discloses can monitor insulating oily vacuum oil filter automatically to automatic alarm.

Description

Insulating oil vacuum oil filter with automatic monitoring and alarming functions

Technical Field

The utility model relates to oil strain equipment technical field, concretely relates to automatic control alarm's insulating oil vacuum oil filter.

Background

Because the insulating oil has insulativity and good heat dissipation, the insulating oil is used in the transformer to play the roles of insulation and cooling, so that the external humid air can be isolated for the transformer, and the stable and normal work of the transformer is ensured. During the installation and operation of the transformer, the insulating oil can have performance degradation due to various reasons, and the safe operation of the transformer is influenced. For example: moisture and metal ions increase, media increase and resistivity decreases. Therefore, an oil filter is often adopted to realize on-line filtration and purification, so that the running oil product is purified in time without being degraded, and the water, gas and impurities in the oil can be removed quickly and efficiently.

The existing oil filter needs on-site attendance of workers in order to guarantee normal work of the oil filter and prevent the oil filter from being shut down due to sudden power failure or other reasons in the oil filtering process. However, because the amount of insulating oil is large, the filtering can be completed in many days, so that an automatic monitoring device is needed to replace manual field maintenance.

Disclosure of Invention

The utility model aims at providing an automatic insulating oil vacuum oil filter of control warning, can automatic control insulating oil vacuum oil filter to automatic alarm.

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

an insulating oil vacuum oil filter capable of automatically monitoring and alarming comprises a first-stage filtering mechanism, a heater, a vacuum separator and a second-stage filtering mechanism, wherein the first-stage filtering mechanism, the heater, the vacuum separator and the second-stage filtering mechanism are sequentially connected through an oil pipeline, an oil inlet of the first-stage filtering mechanism is connected with an oil inlet pipeline, and an oil outlet of the second-stage filtering mechanism is connected with an oil outlet pipeline; the oil inlet pipeline is provided with an oil inlet variable frequency pump and an oil inlet temperature transmitter, the heater is provided with a heating temperature transmitter, an oil outlet variable frequency pump is arranged between the vacuum separator and the second-stage filtering mechanism, and an oil outlet pipeline is provided with oil outlet temperature transmission; the heater, the vacuum separator, the oil inlet variable frequency pump, the variable frequency pump that produces oil, the oil inlet temperature transmitter, heating temperature transmitter and the temperature transmitter that produces oil respectively with the controller electricity is connected.

Furthermore, the alarm device comprises a completion prompt alarm, a primary accident alarm and an emergency alarm, the completion prompt alarm, the primary accident alarm and the emergency alarm are respectively and electrically connected with the controller, and the completion prompt alarm is used for prompting the completion of filtering after the work of the oil filter is completed; the primary accident alarm is used for alarming for primary accidents of equipment without influencing the operation of the equipment; the emergency alarm is used for alarming when important accidents happen to equipment and normal operation of the equipment is influenced.

Further, the controller is used for controlling the oil inlet variable frequency pump and the oil outlet variable frequency pump to start and stop actions respectively, and monitoring the fault and overload of the oil inlet variable frequency pump and the fault and overload of the oil outlet variable frequency pump.

Furthermore, a prefilter and an oil inlet pressure controller are arranged in front of the first-stage filtering mechanism, the prefilter and the oil inlet pressure controller are respectively arranged on the oil inlet pipeline, and the oil inlet pressure controller is electrically connected with the controller.

Further, first order filtering mechanism is established ties by magnetic filter and colander and is constituted, be equipped with first pressure table and first pressure transmitter on the magnetic filter, first pressure table and first pressure transmitter respectively with the controller electricity is connected.

Furthermore, the second-stage filtering mechanism is composed of two fine filters connected in series, a second pressure gauge and a second pressure transmitter are arranged on the two fine filters, and the second pressure gauge and the second pressure transmitter are respectively electrically connected with the controller.

Furthermore, an oil outlet pressure controller is arranged at a fine filter feed inlet of the second-stage filtering mechanism and is arranged on the oil pipeline, and the oil outlet pressure controller is electrically connected with the controller.

Further, the vacuum separator comprises a vacuum separation tank and a vacuum pumping mechanism, the vacuum pumping mechanism comprises a first condenser, a second condenser, a third condenser, a first water accumulator, a second water accumulator, a roots pump and a vacuum pump, an air inlet of the first condenser is connected with the vacuum separation tank, an air outlet of the first condenser is respectively connected with the second condenser, the roots pump, the third condenser, the second water accumulator and the vacuum pump in sequence through air conveying pipelines, and a water outlet of the second condenser is connected with a water inlet of the first water accumulator; the roots pump and the vacuum pump are respectively and electrically connected with the controller.

Further, the controller is used for respectively controlling the starting and stopping actions of the roots pump and the vacuum pump, and monitoring whether the roots pump is overloaded or not and whether the vacuum pump is overloaded or not.

Furthermore, still be equipped with moisture meter, particle appearance and flowmeter on the oil outlet pipeline, moisture meter, particle appearance with the flowmeter respectively with the controller electricity is connected.

The utility model discloses a show the effect and be:

the device can be widely applied to the purification treatment of oil in industries such as power plants, power stations, power companies, power transformation industry, metallurgy, petrifaction, machinery, traffic, railways and the like; the oil temperature change of each link is monitored by the oil inlet temperature transmitter, the heating temperature transmitter and the oil outlet temperature transmitter and is sent to the controller, and the alarm device connected with the controller gives an alarm, so that the oil temperature is prevented from being too high, and safety accidents are avoided. The controller utilizes the heating temperature transmitter, the oil inlet variable frequency pump, the vacuum gauge of the vacuum separator, the heater and the oil outlet variable frequency pump to work in a linkage manner to obtain degassing and dewatering effects, so that the starting actions of the oil inlet variable frequency pump and the oil outlet variable frequency pump are controlled. Therefore, the utility model discloses ensure insulating oil vacuum oil filter's safe normal operating.

The alarm equipment comprises a completion prompting alarm, a primary accident alarm and an emergency alarm, and the completion alarm is used for prompting the completion of filtration after the work of the oil filter is completed; the primary accident alarm comprises a primary accident of equipment and does not influence the operation of the equipment to alarm; the emergency alarm is used for alarming when important accidents happen to equipment and normal operation of the equipment is influenced. By utilizing three different alarms, different conditions can be determined according to different alarms so as to timely treat the insulating oil vacuum oil filter equipment.

The utility model discloses a prefilter, first order filtering mechanism, second level filter mechanism become the multilayer formula and filter, can make impurity, gas, moisture etc. in the fluid clear away completely, have effectively improved the quality of handling back fluid, resume its performance to guarantee hydraulic system, driving system, lubricating system's normal operating.

The second-stage filtering mechanism is composed of two fine filters connected in series, a second pressure meter and a second pressure transmitter are arranged on the two fine filters, and the second pressure meter and the second pressure transmitter are respectively electrically connected with the controller. The two fine filters are adopted, the filtering effect is better, and the second pressure transmitter can monitor the pollution condition of the fine filters, so that the fine filters can be replaced in time after the upper limit of the pollutant carrying capacity is reached.

And an oil outlet pressure controller is arranged at a feed inlet of the fine filter of the second-stage filtering mechanism and used for protecting the fine filter.

Drawings

Fig. 1 is a schematic view of the pipeline structure of the present invention;

fig. 2 is a schematic block diagram of the circuit of the present invention.

In the drawings: 1 is a prefilter, 2 is an oil inlet temperature transmitter, 3 is an oil inlet frequency conversion pump, 4 is an oil inlet pressure controller, 5 is a magnetic filter, 6 is a first pressure transmitter, 7 is a coarse filter, 8 is a main path electromagnetic valve, 9 is a stop valve, 10 is a bypass electromagnetic valve, 11 is a flow switch, 12 is a heater, 13 is a temperature switch, 14 is a heating temperature transmitter, 15 is an air inlet electromagnetic valve, 16 is a liquid level transmitter, 17 is a high liquid level sensor, 18 is a low liquid level sensor, 19 is a first condenser, 20 is a second condenser, 21 is a roots pump, 22 is a third condenser, 23 is a second water accumulator, 24 is a vacuum pump, 25 is a condensation liquid level sensor, 26 is a first water accumulator, 27 is a water accumulation liquid level sensor, 28 is an oil outlet frequency conversion pump, 29 is an oil outlet pressure controller, 30 is a fine filter, 31 is a second pressure transmitter, 32 is an oil outlet temperature transmitter, 30 is a magnetic filter, 6 is a magnetic filter, 14 is a magnetic filter, 17 is a liquid level transmitter, 17 is a high liquid level sensor, a high level sensor, 18 is a high level sensor, a low level sensor is a low level sensor, a low level sensor is a low level sensor, a low level sensor is a low level sensor, a low level sensor is a low level sensor, a low level sensor is a low level sensor, a low level sensor is a low level sensor, a low level sensor is, 33 is a flowmeter, 35 is a moisture meter, 34 is a particle meter, 36 is a controller, 37 is a to-be-processed oil tank, 38 is alarm equipment, 38-1 is a completion prompting alarm, 38-2 is a primary accident alarm, and 38-3 is an emergency alarm.

Detailed Description

The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.

Referring to fig. 1 and 2, the insulating oil vacuum oil filter capable of automatically monitoring and alarming comprises a controller 36, a first-stage filtering mechanism, a flow switch 11, a heater 12, a vacuum separator, an oil outlet variable frequency pump 28, a second-stage filtering mechanism and an alarming device 38, wherein the controller adopts a PLC, the controller 36 is electrically connected with the alarming device 38, the alarming device 38 comprises a completion prompting alarm 38-1, a primary accident alarm 38-2 and an emergency alarm 38-3, the completion prompting alarm 38-1, the primary accident alarm 38-2 and the emergency alarm 38-3 are respectively electrically connected with the output end of the controller 36, and the completion prompting alarm 38-1 is used for prompting the completion of filtering after the oil filter is completed. The primary accident alarm 38-2 is used for primary accidents of the equipment and does not influence the operation alarm of the equipment. The emergency alarm 38-3 is used for alarming when important accidents occur to the equipment and the normal operation of the equipment is influenced. In this particular embodiment: the completion prompt alarm, the primary accident alarm and the emergency alarm adopt the existing indicator light alarms with three different colors or adopt three different audible and visual alarms.

The first-stage filtering mechanism, the flow switch 11, the heater 12, the vacuum separator, the oil outlet variable frequency pump 28 and the second-stage filtering mechanism are sequentially connected through an oil pipeline. First order filtering mechanism is established ties by magnetic filter 5 and colander 7 and is constituted, be equipped with first manometer and first pressure transmitter 6 on the magnetic filter 5, first manometer with controller 36's output electricity is connected, first pressure transmitter 6 with controller 36's input electricity is connected. The first pressure transmitter 6 is used to monitor the magnetic filter 5 for contamination and is sent to the controller 36. The controller 36 starts the primary fault alarm to give an alarm according to the signal of the first pressure transmitter 6, so that the primary fault alarm can be replaced in time after the upper limit of the pollutant carrying capacity is reached.

An oil inlet of the first-stage filtering mechanism is connected with an oil inlet pipeline, the oil inlet pipeline is used for being connected with an oil tank 37 to be processed, a prefilter 1, an oil inlet temperature transmitter 2, an oil inlet frequency conversion pump 3 and an oil inlet pressure controller 4 are further arranged in front of the first-stage filtering mechanism, the prefilter 1, the oil inlet temperature transmitter 2, the oil inlet frequency conversion pump 3 and the oil inlet pressure controller 4 are arranged on the oil inlet pipeline, the oil inlet temperature transmitter 2 is electrically connected with an input end of the controller 36, the oil inlet temperature transmitter 2 is used for monitoring oil inlet temperature change and sending the oil inlet temperature change to the controller 36, and the controller 36 starts a primary fault alarm according to the temperature change of the oil inlet temperature transmitter 2 to send an alarm so as to prevent the oil inlet temperature from being too high. The oil inlet variable frequency pump 3 is electrically connected with the input end and the output end of the controller 36, and the controller 36 controls the starting and stopping actions of the oil inlet variable frequency pump 3 and adjusts the oil inlet flow. The controller 36 is used for controlling the start and stop actions of the oil inlet variable frequency pump, and monitoring the fault and overload of the oil inlet variable frequency pump. In this particular embodiment: the controller 36 monitors the current of the oil inlet variable frequency pump 3, and if the current is abnormal, the emergency alarm is started to send out an emergency alarm. The oil inlet pressure controller 4 is electrically connected with the input end and the output end of the controller 36. The controller 36 adjusts the oil inlet pressure through the oil inlet pressure controller 4, and if the pressure reaches a preset value, a signal is sent to the controller, the controller 36 starts the emergency alarm to send out an emergency alarm, so that a magnetic filter at the rear end of the oil inlet is protected, and the pressure is prevented from being too high.

And an electromagnetic valve assembly is arranged on the oil pipeline between the first-stage filtering mechanism and the flow switch 11 and controls the oil inlet of the vacuum separator. The electromagnetic valve assembly comprises a main path electromagnetic valve 8 and a bypass electromagnetic valve 10, the bypass electromagnetic valve 10 is connected to the main path electromagnetic valve 8 in parallel, and a stop valve 9 is further arranged at the front end of the bypass electromagnetic valve 10; the main solenoid valve 8, the stop valve 9 and the bypass solenoid valve 10 are electrically connected to the output terminal of the controller 36, respectively. The bypass solenoid valve 10 is a backup, supplemental solenoid valve. The flow switch 11 is electrically connected with the input end of the controller 36, the flow switch 11 is used for detecting the change of the oil liquid flow, and the controller 36 controls the heater 12 to be switched on and off according to the information detected by the flow switch.

The heater 12 is provided with a temperature switch 13 and a heating temperature transmitter 14, the heater 12 and the temperature switch 13 are respectively electrically connected with the output end of the controller 36, and the controller 36 controls the starting and stopping actions of the temperature switch 13 and the heater 12, so as to protect and cut off the heater and prevent the temperature of the heater from being overhigh. The heating temperature transmitter 14 is electrically connected to an input of a controller 36. The heating temperature transmitter 14 is used for monitoring the temperature of the heater and sending the temperature to the controller 36, and if the temperature reaches the preset maximum temperature, the controller 36 controls the heating switch 13 and starts the emergency alarm to send out an emergency alarm.

Vacuum separator includes vacuum separation jar, vacuometer and evacuation mechanism, and the vacuometer sets up on the vacuum separation jar, the top of vacuum separation jar is connected with automatic admission line and manual admission line, be provided with air inlet solenoid valve 15 on the automatic admission line, this air inlet solenoid valve 15 with controller electricity 36's output electricity is connected, be equipped with manual admission valve on the manual admission line, still dispose infrared defoaming device and liquid level observation window on the vacuum separation jar, infrared defoaming device with controller 36's input electricity is connected, and after this infrared defoaming device detected the foam, controller 36 control air inlet solenoid valve 15 moved, broke vacuum defoaming.

The vacuum pumping mechanism is connected with the vacuum separation tank, the vacuum pumping mechanism comprises a first condenser 19, a second condenser 20, a third condenser 22, a first water accumulator 26, a second water accumulator 23, a roots pump 21 and a vacuum pump 24, an air inlet of the first condenser 19 is connected with the vacuum separation tank, an air outlet of the first condenser 19 is sequentially connected with the second condenser 20, the roots pump 21, the third condenser 22, the second water accumulator 23 and the vacuum pump 24 through air pipelines, and an water outlet of the second condenser 20 is connected with a water inlet of the first water accumulator 26. The roots pump 21 and the vacuum pump 24 are electrically connected to input and output terminals of the controller 36, respectively. The controller is used for respectively controlling the starting and stopping actions of the roots pump 21 and the vacuum pump 24 and monitoring whether the roots pump and the vacuum pump are overloaded or not. In this particular embodiment: the controller 36 controls the start and stop action of the vacuum pump for vacuumizing the separation tank, the controller 36 detects the motor current of the vacuum pump 24, and if the motor current of the vacuum pump exceeds a preset value, the controller 36 starts an emergency alarm to send out an emergency alarm. The controller 36 controls the starting and stopping action of the roots pump 21 and is used for secondary pressurization and equipment vacuum pumping, the controller detects the motor current of the roots pump 21, and if the motor current of the roots pump 21 exceeds a preset value, the controller starts the emergency alarm to send out emergency alarm.

An air extraction valve and a vacuum meter are further arranged between the second condenser 20 and the roots pump 21, the air extraction valve is electrically connected with the output end of the controller 36, and the vacuum meter is electrically connected with the input end of the controller. And a condensation liquid level sensor 25 is arranged on the second condenser 20, a water accumulation liquid level sensor 27 is arranged on the first water accumulator 26, and the condensation liquid level sensor 25 and the water accumulation liquid level sensor 27 are respectively and electrically connected with the input end of the controller 36. The condensate level sensor 25 is used to detect whether the liquid level in the second condenser 20 changes and send it to the controller 36. The controller 36 activates the emergency alarm to give an emergency alarm according to the detection signal of the condensation level sensor 25. The water level sensor 27 is used for detecting whether condensed water exists in the first water accumulator 26 and sending the condensed water to the controller 36. The controller 36 starts the primary fault alarm to give an alarm according to the detection signal of the accumulated water level sensor 27.

The upper end of vacuum separator tank is equipped with high level sensor 17, the lower extreme of vacuum separator tank is equipped with low level sensor 18, the lateral wall of vacuum separator tank is equipped with liquid level transmitter 16, liquid level transmitter 16 high level sensor 17 with low level sensor 18 is connected with controller 36's input electricity respectively. The high level sensor 17 is used to collect the vacuum level in the vacuum separation tank and send a signal to the controller 36 when the vacuum level in the vacuum separation tank reaches a maximum limit. The controller 36 activates the emergency alarm to send an emergency alarm to protect the vacuum separation tank and prevent the oil level from being too high. The low level sensor 18 is used to collect the vacuum level in the vacuum separation tank and send a signal to the controller 36 when the vacuum level in the vacuum separation tank reaches a minimum limit. The controller 36 activates the primary alarm to alarm and shuts down the variable frequency pump 28 to protect the variable frequency pump 28 from idling. The level transducer 16 is used to detect the vacuum level within the vacuum separation tank. The controller 36 controls the oil inlet variable frequency pump 4 and the oil outlet variable frequency pump 28 to control the liquid level balance in the vacuum separation tank according to the liquid level information detected by the liquid level transmitter 16.

The oil outlet variable frequency pump 28 is connected with the input end and the output end of the controller 36, and the controller 36 controls the start and stop action of the oil outlet variable frequency pump 28 and adjusts the oil outlet flow. The controller 36 is used for controlling the oil outlet variable frequency pump to start and stop, and monitoring the fault and overload of the oil outlet variable frequency pump. In this particular embodiment: the controller 36 detects the motor current of the oil outlet variable frequency pump 28, and if the motor current is abnormal, the controller 36 starts an emergency alarm to send out an emergency alarm.

The second-stage filtering mechanism is composed of two fine filters 30 connected in series, a second pressure gauge and a second pressure transmitter 31 are arranged on each of the two fine filters 30, the second pressure gauge is electrically connected with the output end of the controller 36, and the second pressure transmitter 31 is electrically connected with the input end of the controller 36. The second pressure transmitter 31 is used to monitor the fine filter 30 for contamination and is sent to the controller 36. If the pollutant carrying capacity reaches the upper limit, the controller 36 starts a primary fault alarm to give an alarm so as to replace the alarm in time after the pollutant carrying capacity reaches the upper limit.

The feed inlets of the fine filters 30 of the two second-stage filtering mechanisms are respectively provided with an oil outlet pressure controller 29, the oil outlet pressure controllers 29 are arranged on the oil conveying pipeline, and the oil outlet pressure controllers 29 are electrically connected with the input end and the output end of the controller 36. The controller 36 controls the oil outlet pressure controller 29 to adjust the oil outlet pressure, and if the pressure reaches a preset value, the controller 36 starts an emergency alarm to give an emergency alarm, so that the fine filter 30 is protected and the pressure is prevented from being too high.

The oil outlet of the second-stage filtering mechanism is connected with an oil outlet pipeline, an oil outlet temperature transmitter 32, a flowmeter 33, a moisture meter 35 and a particle meter 34 are sequentially arranged on the oil outlet pipeline, the oil outlet temperature transmitter 32, the moisture meter 35, the particle meter 34 and the flowmeter 33 are respectively electrically connected with the input end of the controller 36, and the oil outlet temperature transmitter 32 is used for detecting the temperature change of oil and sending the oil temperature change to the controller 36. The flow meter 33 is used for detecting the amount of oil treatment and sending it to the controller 36. The particle meter 34 is used for detecting whether the grade of the particle size in the oil reaches the ISO1638 standard and sending the grade to the controller 36. The moisture meter 35 is used to detect the amount of water in the oil in ppm and send it to the controller 36.

The magnetic filter, the coarse filter, the heater, the vacuum separation tank, the fine filter, the first water accumulator and the second water accumulator are all provided with sewage discharge pipelines, and the sewage discharge pipelines are provided with sewage discharge valves.

The working principle of the utility model is as follows:

the utility model discloses utilize heating temperature changer, oil feed temperature changer, the oil temperature of the temperature transmitter that produces oil to detect each link and send to the controller, the controller reaches degasification, dehydration effect according to the action of each vaccum meter of the oil temperature control of each link of receipt, heater, oil feed frequency conversion pump and the frequency conversion pump that produces oil to send out different alarms. When the controller detects that the insulating oil vacuum oil filter finishes filtering, the controller starts the finish prompting alarm to prompt that the work is finished.

The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides an automatic insulating oil vacuum oil filter of monitoring and alarming, includes first order filtering mechanism, heater, vacuum separator and second filter mechanism, first order filtering mechanism, heater vacuum separator and second filter mechanism loop through oil pipeline and link to each other, first order filtering mechanism's oil inlet is connected with into oil pipe way, second filter mechanism's oil-out is connected with out oil pipe way, its characterized in that: the oil inlet pipeline is provided with an oil inlet variable frequency pump and an oil inlet temperature transmitter, the heater is provided with a heating temperature transmitter, an oil outlet variable frequency pump is arranged between the vacuum separator and the second-stage filtering mechanism, and an oil outlet temperature transmitter is arranged on the oil outlet pipeline; the heater, the vacuum separator, the oil inlet variable frequency pump, the variable frequency pump that produces oil, the oil inlet temperature transmitter, heating temperature transmitter and the temperature transmitter that produces oil respectively with the controller electricity is connected.

2. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 1, characterized in that: the alarm device comprises a completion prompt alarm, a primary accident alarm and an emergency alarm, the completion prompt alarm, the primary accident alarm and the emergency alarm are respectively and electrically connected with the controller, and the completion prompt alarm is used for prompting the completion of filtration after the work of the oil filter is completed; the primary accident alarm is used for alarming for primary accidents of equipment without influencing the operation of the equipment; the emergency alarm is used for alarming when important accidents happen to equipment and normal operation of the equipment is influenced.

3. The insulating oil vacuum filter of automatic monitoring alarm of claim 1 or 2, characterized in that: the controller is used for respectively controlling the starting and stopping actions of the oil inlet variable frequency pump and the oil outlet variable frequency pump, and monitoring the fault and overload of the oil inlet variable frequency pump and the fault and overload of the oil outlet variable frequency pump.

4. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 1, characterized in that: the pre-filter and the oil inlet pressure controller are respectively arranged on the oil inlet pipeline, and the oil inlet pressure controller is electrically connected with the controller.

5. The automatic monitoring alarm insulating oil vacuum filter according to claim 1 or 4, characterized in that: first order filtering mechanism establishes ties by magnetic filter and colander and constitutes, be equipped with first pressure table and first pressure transmitter on the magnetic filter, first pressure table and first pressure transmitter respectively with the controller electricity is connected.

6. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 1, characterized in that: the second-stage filtering mechanism is composed of two fine filters connected in series, a second pressure gauge and a second pressure transmitter are arranged on the two fine filters, and the second pressure gauge and the second pressure transmitter are respectively electrically connected with the controller.

7. The automatic monitoring alarm insulating oil vacuum filter according to claim 1 or 6, characterized in that: an oil outlet pressure controller is arranged at a fine filter feed inlet of the second-stage filtering mechanism and is arranged on the oil conveying pipeline, and the oil outlet pressure controller is electrically connected with the controller.

8. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 1, characterized in that: the vacuum separator comprises a vacuum separation tank and a vacuumizing mechanism, the vacuumizing mechanism comprises a first condenser, a second condenser, a third condenser, a first water accumulator, a second water accumulator, a roots pump and a vacuum pump, an air inlet of the first condenser is connected with the vacuum separation tank, an air outlet of the first condenser is sequentially connected with the second condenser, the roots pump, the third condenser, the second water accumulator and the vacuum pump through air pipelines, and a water outlet of the second condenser is connected with a water inlet of the first water accumulator; the roots pump and the vacuum pump are respectively and electrically connected with the controller.

9. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 8, characterized in that: the controller is used for respectively controlling the starting and stopping actions of the roots pump and the vacuum pump and monitoring whether the roots pump is overloaded or not and whether the vacuum pump is overloaded or not.

10. The automatic monitoring and alarming vacuum oil filter for insulating oil of claim 1, characterized in that: the oil outlet pipeline is also provided with a moisture meter, a particle meter and a flowmeter, and the moisture meter, the particle meter and the flowmeter are respectively electrically connected with the controller.