A hydraulic oil filter for a circuit breaker switch

Abstract

The present invention relates to the technical field of filters, and particularly to a hydraulic oil filter for a circuit breaker switch, which includes a suction oil pump, a suction oil pipe mechanism, a pipeline, and a return oil pump. The oil inlet of the suction oil pump is connected to the output end of the suction oil pipe mechanism; it further includes an oil-water separation component, a filtration component, an oil delivery pipe, and an oil storage tank. An oil storage chamber is arranged inside the oil storage tank. The input end of the oil-water separation component is connected to the oil outlet of the suction oil pump through a pipeline, and the output end of the oil-water separation component is connected to the input end of the filtration component through a pipeline. The filtration component is used for filtering hydraulic oil, and a filter element component made of electret material is arranged inside the filtration component. The output end of the filtration component is connected to the input end of the oil delivery pipe, and the output end of the oil delivery pipe extends into the oil storage chamber of the oil storage tank. The oil suction port of the return oil pump is communicated with the oil storage chamber of the oil storage tank; it uses a filtration component made of electret material to adsorb tiny impurity particles smaller than the filter hole diameter, improving the filtration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to a hydraulic oil filter for a circuit breaker switch. Background Art

[0002] Hydraulic oil plays a crucial role in SF6 circuit breaker switches. It is mainly used in the hydraulic operating mechanism of the circuit breaker. This mechanism stores energy by pumping oil, and this energy is released when the circuit breaker opens and closes. The quality and performance of the hydraulic oil are crucial for the normal operation and maintenance of SF6 circuit breaker switches. If the hydraulic oil is contaminated or aged, it may cause problems such as inflexible mechanism operation, increased wear, and leakage, affecting the performance and reliability of the circuit breaker. Therefore, it is very important to regularly replace and filter the hydraulic oil to keep it clean and in good performance. Multiple hydraulic oil filters are disclosed in the prior art for filtering the hydraulic oil of SF6 circuit breakers. For example, a circuit breaker hydraulic mechanism oil filtering and replenishing device proposed in a Chinese invention patent application with the publication number CN115875346A includes a frame, an electrical instrument control box, an oil filling mechanism, an oil filtering mechanism, and a special oil filling joint; the electrical instrument control box is installed on the upper part of the frame, and the oil filling mechanism and the oil filtering mechanism are installed on the bottom plate at the bottom of the frame; the oil outlet of the oil filtering mechanism is connected to the oil inlet of the oil filling mechanism; the oil outlet of the oil filling mechanism is connected to the special oil filling joint; the special oil filling joint is connected to the oil tank of the circuit breaker hydraulic mechanism; the electrical instrument control box is electrically connected to the drive source of the oil filling mechanism to control the oil filling amount of the oil filling mechanism for the circuit breaker hydraulic mechanism oil tank; the special oil filling joint includes an oil injection hole, an air hole, and a liquid level sensor at the upper end, and a threaded interface at the lower end; a polymer permeable membrane filter screen is provided in the air hole; by using the oil filtering mechanism, air bubbles and impurities in the oil are effectively filtered and absorbed, extending the service life of the hydraulic oil.

[0003] The above device uses a degassing filter tank and an impurity removal filter tank to efficiently filter and intercept air bubbles and impurities, but it does not disclose the specific structure of the impurity removal tank. Generally, the traditional impurity removal tank filters the hydraulic oil through the filter holes of the filter element. Therefore, impurities smaller than the filter hole diameter will pass through the filter element, and these small particle impurities will still cause damage to the circuit breaker. Therefore, improvement is needed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a hydraulic oil filter for a circuit breaker switch that uses a filter component made of electret material to adsorb tiny impurity particles smaller than the filter hole diameter and improve the filtering effect.

[0005] A hydraulic oil filter for a circuit breaker switch of the present invention includes a suction oil pump, a suction oil pipe mechanism, a pipeline, and a return oil pump. The inlet of the suction oil pump is connected to the output end of the suction oil pipe mechanism. It also includes an oil-water separation component, a filtration component, a delivery oil pipe, and an oil storage tank. An oil storage chamber is arranged inside the oil storage tank. The input end of the oil-water separation component is connected to the outlet of the suction oil pump through a pipeline. The output end of the oil-water separation component is connected to the input end of the filtration component through a pipeline. The filtration component is used to filter hydraulic oil. A filter element component made of electret material is arranged inside the filtration component. The output end of the filtration component is connected to the input end of the delivery oil pipe. The output end of the delivery oil pipe extends into the oil storage chamber of the oil storage tank. The oil suction port of the return oil pump is communicated with the oil storage chamber of the oil storage tank. An electret material is a dielectric that can still maintain a polarized state for a long time after removing an external electric field or an external mechanical action and can generate a strong electric field of kilovolts per centimeter in a low-speed region. Therefore, the filter element component made by improving the electret material according to the high-insulation environment of hydraulic oil can adsorb tiny particles by electrostatic force. During operation, the suction oil pipe mechanism is inserted into the hydraulic oil tank of the circuit breaker. The suction oil pump is started to pump out the hydraulic oil through the suction oil pipe mechanism and extend it into the oil-water separation component through the pipeline. The oil-water separation component operates to separate the water in the hydraulic oil and input the anhydrous hydraulic oil into the filtration component through the pipeline. The filter element component in the filtration component filters and intercepts medium and large particles in the anhydrous hydraulic oil through its filter hole structure. Tiny particles in the anhydrous hydraulic oil are adsorbed on the inner wall of the filter holes by the electric field of the electret material. The purified hydraulic oil after filtration is input into the oil storage tank through the delivery oil pipe. New hydraulic oil is replenished into the oil storage chamber of the oil storage tank. The return oil pump operates to pump the hydraulic oil in the oil storage chamber of the oil storage tank back into the hydraulic oil tank of the circuit breaker, completing the filtration and return of the hydraulic oil. Compared with the filtration component made of electret material in the prior art, while maintaining the traditional filtration effect of the filter holes, it has an electrostatic adsorption function, adsorbing tiny impurity particles smaller than the diameter of the filter holes, improving the filtration effect, reducing the damage caused by tiny particle impurities to the circuit breaker, and having good practicability.

[0006] Preferably, the suction oil pipe mechanism includes a hard pipe joint, a threaded sleeve, a plurality of connecting rings, and an inner hose. The outer wall of the input end of the hard pipe joint is rotationally sleeved with the threaded sleeve. The plurality of connecting rings are arranged concentrically along the axis in sequence. Adjacent two connecting rings are hinged by a pin shaft. The inner hose is installed on the inner walls of the plurality of connecting rings. The upper end of the inner hose is connected to the input end of the hard pipe joint. The plurality of connecting rings form a movable snake-bone-shaped tubular structure. The plurality of connecting rings movably support the inner hose. During operation, the snake-bone-shaped tubular structure formed by the plurality of connecting rings is inserted into the oil suction interface of the hydraulic oil tank of the circuit breaker, and the threaded sleeve is threadedly connected to the oil suction interface. Since the snake-bone-shaped tubular structure formed by the plurality of connecting rings can be flexibly bent and has a certain rigidity, it can adapt to hydraulic oil tanks of different shapes and depths, and has good versatility.

[0007] Preferably, it further includes a mounting bracket, a first reel, a driving motor, a second reel, two synchronous pulleys, a synchronous belt, a first cable and a second cable. The mounting bracket is installed on the hard pipe joint. The first reel is rotatably installed at the right end of the mounting bracket. The driving motor is installed on the mounting bracket, and the output shaft of the driving motor is in transmission connection with the first reel. The second reel is rotatably installed at the left end of the mounting bracket. Synchronous pulleys are concentrically installed at the ends of the first reel and the second reel. The synchronous belt is sleeved on the two synchronous pulleys. The upper end of the first cable is wound on the first reel, and the lower part of the first cable is connected to the right part of a plurality of connecting rings. The upper end of the second cable is wound on the second reel, and the lower part of the second cable is connected to the left part of a plurality of connecting rings. The upper ends of the first cable and the second cable are both located inside the first reel and the second reel, or the upper ends of the first cable and the second cable are respectively located outside the first reel and the second reel. After the snake-bone-shaped tubular structure formed by a plurality of connecting rings extends into the hydraulic oil tank, the driving motor drives the first reel to rotate reciprocally. The first reel drives the second reel to rotate synchronously and reciprocally through the synchronous pulleys and the synchronous belt. When the first reel winds up the first cable, the second cable synchronously releases the second cable. At this time, the first cable lifts the right part of a plurality of connecting rings upward, so that the snake-bone-shaped tubular structure formed by a plurality of connecting rings curls upward to the right. On the contrary, when the second reel winds up the second cable, the first reel synchronously releases the first cable. At this time, the second cable lifts the left part of a plurality of connecting rings upward, so that the snake-bone-shaped tubular structure formed by a plurality of connecting rings curls upward to the left, so that the snake-bone-shaped tubular structure formed by a plurality of connecting rings stirs the hydraulic oil in the hydraulic oil tank, stirs up the impurities deposited at the bottom and then pumps them out for filtration, improving the filtration effect.

[0008] Preferably, it further includes a rotating thin pipe and a spiral blade. The rotating thin pipe is rotatably installed at the lower end of the lowermost connecting ring. The side wall of the rotating thin pipe is provided with openings. The spiral blade is installed inside the rotating thin pipe, and the spiral blade is located above the opening of the rotating thin pipe. During the process of pumping the hydraulic oil into the inner hose through the rotating thin pipe, the hydraulic oil impacts the spiral blade, thereby driving the spiral blade and the rotating thin pipe to rotate, so that the opening of the rotating thin pipe faces all around, enabling the stirred-up impurities to evenly enter the rotating thin pipe and be pumped out, improving the oil pumping efficiency.

[0009] Preferably, the oil-water separation component includes a separation tank, a vacuum tube, a heating plate and a partition plate. A separation chamber is arranged inside the separation tank. An input pipe and a discharge pipe communicating with the separation chamber are respectively arranged at two ends of the separation tank. The input pipe and the discharge pipe are respectively connected to pipelines. The discharge pipe is located below the input pipe. The vacuum tube is installed on the separation tank and communicates with the upper part of the separation chamber of the separation tank. The heating plate is installed in the separation chamber of the separation tank. The heating plate is arc-shaped and is located below the input pipe. The partition plate is vertically installed in the separation chamber of the separation tank and is located between the heating plate and the discharge pipe. A gap is arranged between the lower end of the partition plate and the bottom of the separation chamber of the separation tank. The vacuum tube is connected to an external vacuum system, making the separation chamber of the separation tank in a negative pressure state. The oil pump inputs hydraulic oil into the separation chamber of the separation tank through the pipeline and the input pipe. The arc-shaped heating plate deflects and disperses the hydraulic oil backward. The heating plate heats the hydraulic oil, enabling the water in the hydraulic oil to evaporate rapidly at a lower temperature. The water vapor is extracted through the vacuum tube, realizing the separation of water in the hydraulic oil. The water-free hydraulic oil is conveyed backward through the lower gap of the partition plate, the discharge pipe and the pipeline, with good practicability.

[0010] Preferably, it further includes an adsorption tank, a plurality of strong magnets, notches and a low-speed area. An adsorption chamber is arranged inside the adsorption tank. An input pipe and an output pipe communicating with the adsorption chamber are arranged on the adsorption tank. The height of the output pipe is lower than that of the input pipe. The input pipe is connected to the oil-water separation component through a pipeline, and the output pipe is connected to the filtration component through a pipeline. A plurality of strong magnets are sequentially installed in the adsorption chamber of the adsorption tank. The cross-section of the strong magnet is triangular. The height of the output pipe is lower than that of the strong magnet. An upward inclined diversion surface is arranged on the side of the strong magnet facing the input pipe, and a plurality of notches are arranged on the inclined diversion surface. A low-speed area is arranged at the connection of two strong magnets. When the hydraulic oil is input into the adsorption chamber of the adsorption tank, the hydraulic oil submerges the plurality of strong magnets and then is discharged through the output pipe. When the hydraulic oil flows through the plurality of strong magnets, its magnetism adsorbs the magnetic impurities in the hydraulic oil. The inclined diversion surfaces of the plurality of strong magnets and the plurality of notches on the inclined diversion surfaces extend the flow path of the hydraulic oil compared with the horizontal diversion surface, and can make the magnetic impurities gather in the plurality of notches. Since the connection part of two adjacent strong magnets forms a triangular area, the effective cross-section of the adsorption tank for the hydraulic oil to pass through in this area increases, making the flow rate of the hydraulic oil decrease under the condition of constant flow rate, forming a low-speed area in this area. The flow rate of the hydraulic oil in the low-speed area between two strong magnets is much lower than that on the inclined diversion surface. Therefore, non-magnetic impurities will fall into the plurality of low-speed areas and gather, realizing the separation and adsorption of impurities in the hydraulic oil and improving the filtration effect.

[0011] Preferably, the oil extraction pump includes a pump housing, a centrifugal impeller, a drive shaft, and a second drive motor. An inlet is provided in the middle of the pump housing. The inlet is connected to the oil extraction pipe mechanism through a pipeline. An outlet is provided on the side wall of the pump housing. The outlet is connected to the oil-water separation component through a pipeline. The centrifugal impeller is rotatably installed inside the pump housing. The centrifugal impeller is aligned with the outlet. A suction port aligned with the inlet is provided in the middle of the centrifugal impeller. The drive shaft is concentrically installed on the end face of the centrifugal impeller facing away from the inlet. The drive shaft is drivingly connected to the output shaft of the second drive motor through a transmission component. The second drive motor is installed on the motor base. The output shaft of the second drive motor drives the drive shaft and the centrifugal impeller to rotate. The centrifugal impeller centrifugally accelerates the hydraulic oil inside the pump housing and discharges it through the outlet, causing a negative pressure inside the pump housing, so that the hydraulic oil is sucked in through the inlet of the pump housing, realizing the efficient transportation of the hydraulic oil. The technology is mature and the practicability is good.

[0012] Preferably, the transmission component includes a first gear, a two-stage gear, and a second gear. It also includes an inner shaft and a propeller impeller. The drive shaft is tubular. The first gear is concentrically installed on the output shaft of the second drive motor. The two-stage gear is rotatably installed on the motor base of the second drive motor. The first-stage gear of the two-stage gear meshes with the first gear. The second gear is concentrically installed on the outer wall of the drive shaft. The second gear meshes with the second-stage gear of the two-stage gear. The inner shaft is rotatably installed inside the drive shaft. The outer end of the inner shaft is concentrically connected to the first gear. The inner end of the inner shaft is installed with the propeller impeller. The propeller impeller is located between the inlet of the pump housing and the suction port of the centrifugal impeller. The output shaft of the second drive motor drives the first gear to rotate. The first gear directly drives the propeller impeller to rotate through the inner shaft. The propeller impeller axially pushes the hydraulic oil at the inlet of the pump housing towards the suction port of the centrifugal impeller, improving the liquid inlet speed and flow rate of the centrifugal impeller. At the same time, the first gear meshes to drive the two-stage gear to rotate. The two-stage gear meshes with the second gear to drive the drive shaft and the centrifugal impeller to rotate. By adjusting the gear ratio of the first-stage gear and the second-stage gear of the two-stage gear, the rotational speed difference between the centrifugal impeller and the propeller impeller is adjusted, realizing the two-stage acceleration of the axial flow and centrifugation of the hydraulic oil and improving the oil extraction efficiency.

[0013] Preferably, the filtering component includes a filtering box, a tubular filter element, an oil outlet piston assembly, an inner sliding tube, a damper, a first drain pipe, a second drain pipe, an oil storage pipe, a pressurizing piston, a piston push rod and a compression spring. A filtering chamber is arranged inside the filtering box. The filtering box is provided with an oil inlet pipe and an oil outlet pipe communicating with the filtering chamber. The oil inlet pipe is located in the middle of the left end of the filtering box, and the oil outlet pipe is located in the middle of the side wall of the filtering box. The filtering box is connected to the oil storage tank through a delivery pipe. The tubular filter element is installed in the filtering chamber of the filtering box. The left and right ends of the tubular filter element are respectively connected to the inner walls of the left and right ends of the filtering box. A gap is arranged between the tubular filter element and the inner wall of the filtering box. The oil inlet pipe is located in the center of the tubular filter element. The tubular filter element is made of electret material. A large number of filter holes are arranged on the side wall of the tubular filter element. The oil outlet piston assembly is slidably installed in the filtering box. Piston plates are arranged at both ends of the oil outlet piston assembly. The two piston plates are in frictional contact with the inner wall of the tubular filter element. The inner sliding tube is slidably installed in the oil inlet pipe of the filtering box. The inner sliding tube is communicated with one piston plate of the oil outlet piston assembly. The damper is installed at the right end of the filtering chamber of the filtering box. The piston rod of the damper is connected to the oil outlet piston assembly. The first drain pipe is installed at the left end of the filtering box. The first drain pipe extends into the interior of the tubular filter element. The second drain pipe is installed at the right end of the filtering box. The second drain pipe extends into the interior of the tubular filter element. The oil storage pipe is installed on the outer wall of the filtering box. The oil storage pipe is communicated with the filtering chamber of the filtering box. The pressurizing piston is slidably installed in the oil storage pipe. The lower end of the piston push rod is connected to the pressurizing piston. One end of the compression spring is connected to the piston push rod, and the other end of the compression spring is connected to the oil storage pipe; The hydraulic oil is input into the oil outlet piston assembly through the oil inlet pipe and the inner sliding tube. The part of the tubular filter element in alignment and contact with the oil outlet piston assembly filters the hydraulic oil. The filter holes of the tubular filter element intercept and filter the large particles in the hydraulic oil. The electrostatic field of the tubular filter element adsorbs the tiny impurities smaller than the filter holes, achieving efficient filtration. When the filter holes in the part of the tubular filter element in alignment and contact with the oil outlet piston assembly are blocked and the filtration efficiency decreases, the pressure in the oil outlet piston assembly, the inner sliding tube and the oil inlet pipe increases. The pushing force of the hydraulic oil on the inner sliding tube and the oil outlet piston assembly is greater than the damping force of the damper on the oil outlet piston assembly, so as to push the oil outlet piston assembly towards the damper for a certain distance, making the oil outlet piston assembly align with the part of the tubular filter element with unblocked filter holes. At this time, the filtration efficiency is restored. The pushing force of the hydraulic oil on the oil outlet piston assembly and the inner sliding tube cannot cause the damper to contract, thus achieving a stable filtration effect;When the oil outlet piston assembly moves to the end of the tubular filter element and the filtering effect of the tubular filter element cannot be maintained, the valve of the oil delivery pipe is closed, and the hydraulic oil continuously enters the oil outlet piston assembly through the inner sliding pipe and enters between the tubular filter element and the filter tank through the filter holes of the tubular filter element, causing the overall oil pressure in the filter tank to rise, and the hydraulic oil pressure between the tubular filter element and the filter tank to rise synchronously. As the injection volume and pressure of the hydraulic oil between the tubular filter element and the filter tank increase, the hydraulic oil is pressed into the oil storage pipe. As the oil level of the hydraulic oil in the oil storage pipe rises, the pressurizing piston and the piston push rod are pushed up, compressing the compression spring to store energy. After the compression spring finishes storing energy, the valve of the inner sliding pipe is closed. At this time, the elastic force of the compression spring acts on the hydraulic oil in the filter tank through the piston push rod and the pressurizing piston, keeping a large pressure difference between the inside and outside of the filter tank. The drain pipe 1 and the drain pipe 2 are intermittently opened and closed. When the drain pipe 1 and the drain pipe 2 are opened, due to the large pressure difference between the inside and outside of the filter tank, the hydraulic oil inside the tubular filter element is first output through the drain pipe 1 and the drain pipe 2. At this time, the internal pressure of the tubular filter element is less than the external pressure of the tubular filter element, so that the hydraulic oil between the outside of the tubular filter element and the filter tank enters the inside of the tubular filter element through the filter holes, and the hydraulic oil inside the tubular filter element is discharged through the drain pipe 1 and the drain pipe 2. During this process, the hydraulic oil between the tubular filter element and the filter tank flushes the tubular filter element, and the flushing hydraulic oil carries the impurities on the filter holes of the tubular filter element and is discharged through the drain pipe 1 or the drain pipe 2. During the entire flushing process, the stored energy of the compression spring is released, and the hydraulic oil stored in the oil storage pipe is pressed into the filter tank, which can improve the flushing oil volume and flushing effect. When the drain pipe 1 is opened for flushing, due to the decrease in the pressure on the left side of the oil outlet piston assembly, the oil outlet piston assembly is pushed to the left by the hydraulic oil on the right side, so that the drain pipe 1 is opened for flushing in the final stage of flushing, which can make the oil outlet piston assembly reset to the left and realize the self-cleaning function of the tubular filter element, with good practicability.;

[0014] Preferably, it further includes a temperature sensor, a first pressure sensor, a second pressure sensor, and a third pressure sensor. The temperature sensor is installed on the pipeline and is used to detect the temperature of the hydraulic oil. The first pressure sensor is installed between the oil-water separation component and the adsorption tank and is used to detect the hydraulic oil pressure entering the adsorption tank. The second pressure sensor is installed between the adsorption tank and the filtration component and is used to detect the hydraulic oil pressure entering the filtration component. The third pressure sensor is installed on the oil delivery pipe and is used to detect the hydraulic oil pressure output from the filtration component. The intelligent control system receives the data detected by the temperature sensor, the first pressure sensor, the second pressure sensor, and the third pressure sensor, thereby determining the operating state of the entire system. The power of the heating plate is adjusted through the temperature data detected by the temperature sensor, so that the hydraulic oil separates water while maintaining a certain temperature, improving fluidity, and avoiding damage to the electret material of the tubular filter element due to excessive temperature. Through the hydraulic oil pressure data detected by the first pressure sensor, the second pressure sensor, and the third pressure sensor, the operating state of the oil pump is automatically adjusted, and the first drain pipe and the second drain pipe are opened or closed for backwashing operations, etc., thereby maintaining the normal operation of the entire system and improving reliability and intelligence.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The filtration component made of electret material has an electrostatic adsorption function while maintaining the filtering effect of traditional filter holes, adsorbing tiny impurity particles smaller than the filter hole diameter, improving the filtering effect, reducing the damage caused by tiny particle impurities to the circuit breaker, and having good practicability. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is an axonometric schematic diagram of the present invention;

[0018] Figure 3 is a schematic structural diagram of the oil extraction pipe mechanism;

[0019] Figure 4 is a schematic structural diagram of the disassembled state of the oil extraction pipe mechanism;

[0020] Figure 5 is a partial cross-sectional structural diagram of the filtration component;

[0021] Figure 6 is a schematic structural diagram of the disassembled state of the filtration component;

[0022] Figure 7 is a partial cross-sectional structural diagram of the oil pump;

[0023] Figure 8 is a schematic structural diagram of the disassembled state of the oil pump;

[0024] Figure 9 It is a schematic side-sectional structure diagram of the oil-water separation component;

[0025] Figure 10 It is a schematic front-sectional structure diagram of the adsorption box, strong magnet, notch and low-speed area.

[0026] Reference numerals in the drawings: 1, oil extraction pump; 2, oil extraction pipe mechanism; 3, pipeline; 4, oil return pump; 5, oil-water separation component; 6, filtration component; 7, oil supply pipe; 8, oil storage tank; 9, hard pipe joint; 10, threaded socket; 11, connecting ring; 12, inner hose; 13, mounting bracket; 14, reel one; 15, drive motor; 16, reel two; 17, synchronous pulley; 18, synchronous belt; 19, cable one; 20, cable two; 21, rotating thin pipe; 22, spiral blade; 23, separation box; 24, vacuum pipe; 25, heating plate; 26, partition board; 27, adsorption box; 28, strong magnet; 29, notch; 30, low-speed area; 31, pump housing; 32, centrifugal impeller; 33, drive shaft; 34, drive motor two; 35, gear one; 36, two-stage gear; 37, gear two; 38, inner shaft; 39, propeller impeller; 40, filtration box; 41, tube-shaped filter element; 42, oil outlet piston assembly; 43, inner sliding pipe; 44, damper; 45, oil discharge pipe one; 46, oil discharge pipe two; 47, oil storage pipe; 48, pressurizing piston; 49, piston pressure rod; 50, compression spring; 51, temperature sensor; 52, pressure sensor one; 53, pressure sensor two; 54, pressure sensor three. Detailed implementation manners

[0027] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0028] Embodiment 1, as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown in the figure, a hydraulic oil filter for a circuit breaker switch includes a suction oil pump 1, a suction oil pipe mechanism 2, a pipeline 3, and a return oil pump 4. The oil inlet of the suction oil pump 1 is connected to the output end of the suction oil pipe mechanism 2. It also includes an oil-water separation component 5, a filtration component 6, a delivery oil pipe 7, and an oil storage tank 8. An oil storage chamber is arranged inside the oil storage tank 8. The input end of the oil-water separation component 5 is connected to the oil outlet of the suction oil pump 1 through the pipeline 3. The output end of the oil-water separation component 5 is connected to the input end of the filtration component 6 through the pipeline 3. The filtration component 6 is used for filtering hydraulic oil. A filter element component made of electret material is arranged inside the filtration component 6. The output end of the filtration component 6 is connected to the input end of the delivery oil pipe 7. The output end of the delivery oil pipe 7 extends into the oil storage chamber of the oil storage tank 8. The oil suction port of the return oil pump 4 is communicated with the oil storage chamber of the oil storage tank 8. It further includes a temperature sensor 51, a first pressure sensor 52, a second pressure sensor 53, and a third pressure sensor 54. The temperature sensor 51 is installed on the pipeline 3 and is used for detecting the temperature of the hydraulic oil. The first pressure sensor 52 is installed between the oil-water separation component 5 and the adsorption tank 27 and is used for detecting the pressure of the hydraulic oil entering the adsorption tank 27. The second pressure sensor 53 is installed between the adsorption tank 27 and the filtration component 6 and is used for detecting the pressure of the hydraulic oil entering the filtration component 6. The third pressure sensor 54 is installed on the delivery oil pipe 7 and is used for detecting the pressure of the hydraulic oil output from the filtration component 6.

[0029] The intelligent control system receives the data detected by the temperature sensor 51, the first pressure sensor 52, the second pressure sensor 53 and the third pressure sensor 54, so as to determine the operating state of the whole system. The power of the heating plate 25 is adjusted according to the temperature data detected by the temperature sensor 51, so that while the hydraulic oil separates water, it maintains a certain temperature, improves fluidity, and avoids damage to the electret material of the tubular filter element 41 caused by too high temperature. According to the hydraulic oil pressure data detected by the first pressure sensor 52, the second pressure sensor 53 and the third pressure sensor 54, the operating state of the oil extraction pump 1 is automatically adjusted, and the first drain pipe 45 and the second drain pipe 46 are opened or closed for backwashing operation, etc., so as to maintain the normal operation of the whole system and improve the reliability and intelligence level; during operation, the oil extraction pipe mechanism 2 is extended into the hydraulic oil tank of the circuit breaker, and the oil extraction pump 1 is started to extract the hydraulic oil through the oil extraction pipe mechanism 2 and extend it into the oil-water separation component 5 through the pipeline 3. The oil-water separation component 5 operates to separate the water in the hydraulic oil, and the anhydrous hydraulic oil is input into the filtering component 6 through the pipeline 3. The filter element component in the filtering component 6 filters and intercepts medium and large particles in the anhydrous hydraulic oil through its pore structure. The tiny particles in the anhydrous hydraulic oil are adsorbed on the inner wall of the pores by the electric field of the electret material. The purified hydraulic oil after filtration is input into the storage tank 8 through the oil delivery pipe 7. New hydraulic oil is replenished into the oil storage chamber of the storage tank 8, and the return oil pump 4 operates to transport the hydraulic oil in the oil storage chamber of the storage tank 8 back to the hydraulic oil tank of the circuit breaker, completing the filtration and return of the hydraulic oil. Compared with the prior art, the filtering component made of electret material has an electrostatic adsorption function while maintaining the filtering effect of traditional pores, adsorbing tiny impurity particles smaller than the pore diameter, improving the filtering effect, and reducing the damage caused by tiny particle impurities to the circuit breaker.

[0030] The oil extraction pump 1 includes a pump housing 31, a centrifugal impeller 32, a drive shaft 33, and a second drive motor 34. An inlet is provided in the middle of the pump housing 31. The inlet is connected to the oil extraction pipe mechanism 2 through a pipeline 3. An outlet is provided on the side wall of the pump housing 31. The outlet is connected to the oil-water separation component 5 through a pipeline 3. The centrifugal impeller 32 is rotatably installed inside the pump housing 31. The centrifugal impeller 32 is aligned with the outlet. A suction port aligned with the inlet is provided in the middle of the centrifugal impeller 32. The drive shaft 33 is concentrically installed on the end face of the centrifugal impeller 32 facing away from the inlet. The drive shaft 33 is drivingly connected to the output shaft of the second drive motor 34 through a transmission component. The second drive motor 34 is installed on a motor base; the transmission component includes a first gear 35, a two-stage gear 36, and a second gear 37. It also includes an inner shaft 38 and a propeller impeller 39. The drive shaft 33 is tubular. The first gear 35 is concentrically installed on the output shaft of the second drive motor 34. The two-stage gear 36 is rotatably installed on the motor base of the second drive motor 34. The first-stage gear of the two-stage gear 36 meshes with the first gear 35. The second gear 37 is concentrically installed on the outer wall of the drive shaft 33. The second gear 37 meshes with the second-stage gear of the two-stage gear 36. The inner shaft 38 is rotatably installed inside the drive shaft 33. The outer end of the inner shaft 38 is concentrically connected to the first gear 35. The inner end of the inner shaft 38 is installed with the propeller impeller 39. The propeller impeller 39 is located between the inlet of the pump housing 31 and the suction port of the centrifugal impeller 32.

[0031] The output shaft of the second drive motor 34 drives the first gear 35 to rotate. The first gear 35 directly drives the propeller impeller 39 to rotate through the inner shaft 38. The propeller impeller 39 pushes the hydraulic oil at the inlet of the pump housing 31 axially towards the suction port of the centrifugal impeller 32, improving the liquid inlet speed and flow rate of the centrifugal impeller 32. At the same time, the first gear 35 meshes with and drives the two-stage gear 36 to rotate. The two-stage gear 36 meshes with the second gear 37 to drive the drive shaft 33 and the centrifugal impeller 32 to rotate. By adjusting the gear ratio of the first-stage gear and the second-stage gear of the two-stage gear 36, the rotational speed difference between the centrifugal impeller 32 and the propeller impeller 39 is adjusted, realizing the secondary acceleration of the axial flow and centrifugation of the hydraulic oil. The drive shaft 33 and the centrifugal impeller 32 rotate. The centrifugal impeller 32 centrifugally accelerates the hydraulic oil inside the pump housing 31 and discharges it through the outlet, causing a negative pressure inside the pump housing 31, so that the hydraulic oil is sucked in through the inlet of the pump housing 31, realizing the efficient transportation of the hydraulic oil.

[0032] The filtering component 6 includes a filtering box 40, a tubular filter element 41, an oil outlet piston assembly 42, an inner sliding pipe 43, a damper 44, a first drain pipe 45, a second drain pipe 46, an oil storage pipe 47, a pressurizing piston 48, a piston push rod 49 and a compression spring 50. A filtering chamber is arranged inside the filtering box 40. The filtering box 40 is provided with an oil inlet pipe and an oil outlet pipe communicating with the filtering chamber. The oil inlet pipe is located in the middle of the left end of the filtering box 40, and the oil outlet pipe is located in the middle of the side wall of the filtering box 40. The filtering box 40 is connected to an oil storage tank 8 through an oil delivery pipe 7. The tubular filter element 41 is installed in the filtering chamber of the filtering box 40. The left and right ends of the tubular filter element 41 are respectively connected to the inner walls of the left and right ends of the filtering box 40. A gap is arranged between the tubular filter element 41 and the inner wall of the filtering box 40. The oil inlet pipe is located at the center of the tubular filter element 41. The tubular filter element 41 is made of electret material, and a large number of filter holes are arranged on the side wall of the tubular filter element 41. The oil outlet piston assembly 42 is slidably installed in the filtering box 40. Piston plates are arranged at both ends of the oil outlet piston assembly 42, and the two piston plates are in frictional contact with the inner wall of the tubular filter element 41. The inner sliding pipe 43 is slidably installed in the oil inlet pipe of the filtering box 40, and the inner sliding pipe 43 is communicated with one piston plate of the oil outlet piston assembly 42. The damper 44 is installed at the right end of the filtering chamber of the filtering box 40, and the piston rod of the damper 44 is connected to the oil outlet piston assembly 42. The first drain pipe 45 is installed at the left end of the filtering box 40, and the first drain pipe 45 extends into the inside of the tubular filter element 41. The second drain pipe 46 is installed at the right end of the filtering box 40, and the second drain pipe 46 extends into the inside of the tubular filter element 41. The oil storage pipe 47 is installed on the outer wall of the filtering box 40, and the oil storage pipe 47 is communicated with the filtering chamber of the filtering box 40. The pressurizing piston 48 is slidably installed in the oil storage pipe 47. The lower end of the piston push rod 49 is connected to the pressurizing piston 48, and one end of the compression spring 50 is connected to the piston push rod 49, and the other end of the compression spring 50 is connected to the oil storage pipe 47.

[0033] The hydraulic oil is input into the oil outlet piston assembly 42 through the oil inlet pipe and the inner sliding pipe 43. The part where the tubular filter element 41 is aligned and in contact with the oil outlet piston assembly 42 filters the hydraulic oil. The filter holes of the tubular filter element 41 intercept and filter the large and medium particles in the hydraulic oil. The electrostatic field of the tubular filter element 41 adsorbs the tiny impurities smaller than the filter holes to achieve efficient filtration. When the filter holes at the part where the tubular filter element 41 is aligned and in contact with the oil outlet piston assembly 42 are blocked and the filtration efficiency decreases, the pressure in the oil outlet piston assembly 42, the inner sliding pipe 43, and the oil inlet pipe increases. The pushing force of the hydraulic oil on the inner sliding pipe 43 and the oil outlet piston assembly 42 is greater than the damping force of the damper 44 on the oil outlet piston assembly 42, so as to push the oil outlet piston assembly 42 towards the damper 44 by a certain distance, making the oil outlet piston assembly 42 aligned with the part of the tubular filter element 41 with unblocked filter holes. At this time, the filtration efficiency is restored, and the pushing force of the hydraulic oil on the oil outlet piston assembly 42 and the inner sliding pipe 43 cannot cause the damper 44 to contract, thus achieving a stable filtration effect;When the oil outlet piston assembly 42 moves to the end of the tubular filter element 41 and the filtering effect of the tubular filter element 41 cannot be maintained, the valve of the oil delivery pipe 7 closes, and the hydraulic oil continuously enters the oil outlet piston assembly 42 through the inner sliding pipe 43 and enters between the tubular filter element 41 and the filter box 40 through the filter holes of the tubular filter element 41, causing the overall oil pressure in the filter box 40 to rise. The hydraulic oil pressure between the tubular filter element 41 and the filter box 40 rises synchronously. As the injection volume and pressure of the hydraulic oil between the tubular filter element 41 and the filter box 40 increase, the hydraulic oil is pressed into the oil storage pipe 47. As the oil level of the hydraulic oil in the oil storage pipe 47 rises, the pressurizing piston 48 and the piston push rod 49 are pushed up, compressing and storing energy in the compression spring 50. After the compression and energy storage of the compression spring 50 are completed, the valve of the inner sliding pipe 43 is closed. At this time, the elastic force of the compression spring 50 acts on the hydraulic oil in the filter box 40 through the piston push rod 49 and the pressurizing piston 48, maintaining a large pressure difference between the inside and outside of the filter box 40. The drain pipe 1 45 and the drain pipe 2 46 are intermittently opened and closed. When the drain pipe 1 45 and the drain pipe 2 46 are opened, due to the large pressure difference between the inside and outside of the filter box 40, the hydraulic oil inside the tubular filter element 41 is first output through the drain pipe 1 45 and the drain pipe 2 46. At this time, the internal pressure of the tubular filter element 41 is less than the external pressure of the tubular filter element 41, so that the hydraulic oil between the outside of the tubular filter element 41 and the filter box 40 enters the inside of the tubular filter element 41 through the filter holes, and the hydraulic oil inside the tubular filter element 41 is discharged through the drain pipe 1 45 and the drain pipe 2 46. During this process, the hydraulic oil between the tubular filter element 41 and the filter box 40 backwashes the tubular filter element 41, and the backwashing hydraulic oil carries the impurities on the filter holes of the tubular filter element 41 and is discharged through the drain pipe 1 45 or the drain pipe 2 46. During the entire backwashing process, the stored energy of the compression spring 50 is released, and the hydraulic oil stored in the oil storage pipe 47 is pressed into the filter box 40, which can improve the backwashing oil volume and backwashing effect. When backwashing by opening the drain pipe 1 45, since the pressure on the left side of the oil outlet piston assembly 42 drops, the oil outlet piston assembly 42 is pushed to the left by the hydraulic oil on the right side, so that the drain pipe 1 45 is opened for backwashing in the final stage of backwashing, enabling the oil outlet piston assembly 42 to reset to the left and realizing the self-cleaning function of the tubular filter element 41.;

[0034] Example 2, as Figures 1 to 4As shown, on the basis of Embodiment 1, the tubing string mechanism 2 includes a hard pipe joint 9, a threaded socket 10, a plurality of connecting rings 11 and an inner hose 12. The outer wall of the input end of the hard pipe joint 9 is rotatably sleeved with the threaded socket 10. The plurality of connecting rings 11 are arranged concentrically along the axis in sequence. Adjacent two connecting rings 11 are hinged by a pin shaft. The inner hose 12 is installed on the inner walls of the plurality of connecting rings 11. The upper end of the inner hose 12 is connected to the input end of the hard pipe joint 9. It further includes a mounting bracket 13, a first reel 14, a driving motor 15, a second reel 16, two synchronous pulleys 17, a synchronous belt 18, a first cable 19 and a second cable 20. The mounting bracket 13 is installed on the hard pipe joint 9. The first reel 14 is rotatably installed at the right end of the mounting bracket 13. The driving motor 15 is installed on the mounting bracket 13. The output shaft of the driving motor 15 is in transmission connection with the first reel 14. The second reel 16 is rotatably installed at the left end of the mounting bracket 13. Synchronous pulleys 17 are concentrically installed at the ends of the first reel 14 and the second reel 16. The synchronous belt 18 is sleeved on the two synchronous pulleys 17. The upper end of the first cable 19 is wound on the first reel 14. The lower part of the first cable 19 is connected to the right part of the plurality of connecting rings 11. The upper end of the second cable 20 is wound on the second reel 16. The lower part of the second cable 20 is connected to the left part of the plurality of connecting rings 11. It further includes a rotating thin pipe 21 and a spiral blade 22. The rotating thin pipe 21 is rotatably installed at the lower end of the lowermost connecting ring 11. An opening is provided on the side wall of the rotating thin pipe 21. The spiral blade 22 is installed inside the rotating thin pipe 21. The spiral blade 22 is located above the opening of the rotating thin pipe 21.

[0035] A plurality of connecting rings 11 form a movable snake-bone-shaped tubular structure. The plurality of connecting rings 11 movably support the inner hose 12. During operation, the snake-bone-shaped tubular structure formed by the plurality of connecting rings 11 is inserted into the oil extraction interface of the hydraulic oil tank of the circuit breaker, and the threaded sleeve 10 is threadedly connected to the oil extraction interface. Since the snake-bone-shaped tubular structure formed by the plurality of connecting rings 11 can be flexibly bent and has a certain rigidity, it can adapt to hydraulic oil tanks of different shapes and depths, with good versatility. The upper ends of the first cable 19 and the second cable 20 are both located inside the first reel 14 and the second reel 16, or the upper ends of the first cable 19 and the second cable 20 are respectively located outside the first reel 14 and the second reel 16. After the snake-bone-shaped tubular structure formed by the plurality of connecting rings 11 is inserted into the hydraulic oil tank, the drive motor 15 drives the first reel 14 to rotate reciprocally. The first reel 14 drives the second reel 16 to rotate synchronously and reciprocally through the synchronous pulley 17 and the synchronous belt 18. When the first reel 14 winds up the first cable 19, the second cable 20 synchronously releases the second cable 20. At this time, the first cable 19 lifts the right part of the plurality of connecting rings 11 upward, so that the snake-bone-shaped tubular structure formed by the plurality of connecting rings 11 curls upward to the right. Conversely, when the second reel 16 winds up the second cable 20, the first reel 14 synchronously releases the first cable 19. At this time, the second cable 20 lifts the left part of the plurality of connecting rings 11 upward, so that the snake-bone-shaped tubular structure formed by the plurality of connecting rings 11 curls upward to the left, thereby stirring the hydraulic oil in the hydraulic oil tank, stirring up the impurities deposited at the bottom and then pumping them out for filtration to improve the filtration effect. During the process that the hydraulic oil is pumped into the inner hose 12 through the rotating thin tube 21, the hydraulic oil impacts the spiral blade 22, thereby driving the spiral blade 22 and the rotating thin tube 21 to rotate, making the opening of the rotating thin tube 21 face all around, so that the stirred-up impurities uniformly enter the rotating thin tube 21 and are pumped out, improving the oil pumping efficiency.

[0036] Embodiment 3, as Figure 1 、 Figure 2 、 Figure 9 and Figure 10 shown. On the basis of Embodiment 1, the oil-water separation assembly 5 includes a separation tank 23, a vacuum tube 24, a heating plate 25 and a partition plate 26. A separation chamber is arranged inside the separation tank 23. An input pipe and a discharge pipe communicating with the separation chamber are respectively arranged at both ends of the separation tank 23. The input pipe and the discharge pipe are respectively connected to the pipeline 3. The discharge pipe is located below the input pipe. The vacuum tube 24 is installed on the separation tank 23. The vacuum tube 24 communicates with the upper part of the separation chamber of the separation tank 23. The heating plate 25 is installed in the separation chamber of the separation tank 23. The heating plate 25 is arc-shaped. The heating plate 25 is located below the input pipe. The partition plate 26 is vertically installed in the separation chamber of the separation tank 23. The partition plate 26 is located between the heating plate 25 and the discharge pipe. A gap is provided between the lower end of the partition plate 26 and the bottom of the separation chamber of the separation tank 23.

[0037] The vacuum tube 24 is connected to an external vacuum system, making the separation chamber of the separation box 23 in a negative pressure state. The oil pump 1 inputs hydraulic oil into the separation chamber of the separation box 23 through the pipeline 3 and the input pipe. The arc-shaped heating plate 25 guides and disperses the hydraulic oil backward. The heating plate 25 heats the hydraulic oil, enabling the water in the hydraulic oil to evaporate rapidly at a relatively low temperature. The water vapor is extracted through the vacuum tube 24 to achieve the separation of water in the hydraulic oil. The anhydrous hydraulic oil is conveyed backward through the lower gap of the partition plate 26, the discharge pipe, and the pipeline 3.

[0038] It further includes an adsorption box 27, a plurality of strong magnets 28, notches 29, and a low-speed area 30. An adsorption chamber is arranged inside the adsorption box 27. The adsorption box 27 is provided with an input pipe and an output pipe communicating with the adsorption chamber. The height of the output pipe is lower than that of the input pipe. The input pipe is connected to the oil-water separation component 5 through the pipeline 3, and the output pipe is connected to the filtration component 6 through the pipeline 3. A plurality of strong magnets 28 are sequentially installed in the adsorption chamber of the adsorption box 27. The cross-section of the strong magnet 28 is triangular. The height of the output pipe is lower than that of the strong magnet 28. An upward inclined diversion surface is arranged on the side of the strong magnet 28 facing the input pipe. A plurality of notches 29 are arranged on the inclined diversion surface. A low-speed area 30 is arranged at the connection part of two adjacent strong magnets 28.

[0039] When the hydraulic oil is input into the adsorption chamber of the adsorption box 27, the hydraulic oil submerges a plurality of strong magnets 28 and then is discharged through the output pipe. When the hydraulic oil flows through a plurality of strong magnets 28, its magnetism adsorbs the magnetic impurities in the hydraulic oil. The inclined diversion surfaces of the plurality of strong magnets 28 and the plurality of notches 29 on the inclined diversion surface extend the flow path of the hydraulic oil compared with a horizontal diversion surface, and can make the magnetic impurities gather in the plurality of notches 29. Since the connection part of two adjacent strong magnets 28 forms a triangular area, the effective cross-section of the adsorption box 27 for the hydraulic oil to pass through in this area increases, making the flow rate of the hydraulic oil decrease under the condition of constant flow rate, so that a low-speed area 30 is formed in this area. The flow rate of the hydraulic oil in the low-speed area 30 between two adjacent strong magnets 28 is much lower than the flow rate on the inclined diversion surface. Therefore, non-magnetic impurities will fall into the plurality of low-speed areas 30 and gather, realizing the separation and adsorption of impurities in the hydraulic oil and improving the filtration effect.

[0040] Such as Figures 1 to 10As shown in the figure, a hydraulic oil filter for a circuit breaker switch of the present invention, when working, first inserts the oil suction pipe mechanism 2 into the hydraulic oil tank of the circuit breaker, and the oil suction pipe mechanism 2 stirs the hydraulic oil. The oil suction pump 1 starts to extract the hydraulic oil through the oil suction pipe mechanism 2 and extends it into the oil-water separation component 5 through the pipeline 3. The oil-water separation component 5 operates to separate the water in the hydraulic oil by negative pressure evaporation, and the dehydrated hydraulic oil is input into the adsorption box 27 through the pipeline 3. A plurality of strong magnets 28 adsorb and filter the magnetic impurities in the hydraulic oil, and the large-particle impurities are deposited in a plurality of low-speed areas 30 to complete preliminary impurity removal and filtration. Then, the preliminarily impurity-removed and filtered hydraulic oil is input into the filter component 6. The tubular filter element 41 of the filter element component in the filter component 6 filters and intercepts medium and large particles in the hydraulic oil through its filter hole structure, and the tiny particles in the hydraulic oil are adsorbed on the inner wall of the filter hole by the electric field of the electret material. The purified hydraulic oil after filtration is input into the oil storage tank 8 through the oil delivery pipe 7. New hydraulic oil is replenished into the oil storage chamber of the oil storage tank 8, and the oil return pump 4 operates to transport the hydraulic oil in the oil storage chamber of the oil storage tank 8 back to the hydraulic oil tank of the circuit breaker, completing the filtration and return of the hydraulic oil. Then, after working for a period of time, when the pressure difference between the pressure sensor three 54 and the pressure sensor two 53 is too large, the backwashing operation of the tubular filter element 41 is started. The valve of the oil delivery pipe 7 is closed to increase the pressure of the hydraulic oil between the tubular filter element 41 and the filter box 40. The hydraulic oil enters the oil storage pipe 47 and pushes up the pressure piston 48 and the piston push rod 49, compressing and storing energy in the compression spring 50. The oil discharge pipe one 45 and the oil discharge pipe two 46 are intermittently opened and closed, so that the hydraulic oil inside the tubular filter element 41 is discharged at high speed, causing the hydraulic oil between the tubular filter element 41 and the filter box 40 to backwash the tubular filter element 41. The backwashed hydraulic oil carries the impurities on the filter holes of the tubular filter element 41 and is discharged through the oil discharge pipe one 45 or the oil discharge pipe two 46. Finally, the oil discharge pipe one 45 is opened for backwashing in the last stage of backwashing, which can make the oil outlet piston assembly 42 reset to the left. Open the valve of the oil delivery pipe 7 and continue the filtration work.

[0041] The main functions achieved by the present invention are:

[0042] 1. A filter component made of electret material adsorbs tiny impurity particles smaller than the filter hole diameter, improving the filtration effect;

[0043] 2. It can separate and discharge the water in the hydraulic oil;

[0044] 3. It can stir the hydraulic oil in the hydraulic oil tank of the circuit breaker, stir up the impurities deposited at the bottom and then extract them for filtration;

[0045] 4. Remove magnetic impurities through a magnetic adsorption structure, and remove large-particle impurities by setting the low-speed area 30;

[0046] 5. The filter component has a backwashing self-cleaning function.

[0047] A hydraulic oil filter for a circuit breaker switch of the present invention has an installation method, a connection method, or a setting method that are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; the oil extraction pump 1, the oil extraction pipe mechanism 2, the pipeline 3, the oil return pump 4, the oil-water separation component 5, the filtration component 6, the storage tank 8, the hard pipe joint 9, the threaded sleeve 10, the inner hose 12, the reel one 14, the drive motor 15, the reel two 16, the synchronous pulley 17, the synchronous belt 18, the cable one 19, the cable two 20, the spiral blade 22, the vacuum tube 24, the heating plate 25, the strong magnet 28, the pump housing 31, the centrifugal impeller 32, the drive motor two 34, the gear one 35, the two-stage gear 36, the gear two 37, the inner shaft 38, the propeller impeller 39, the filter box 40, the tubular filter element 41, the inner sliding pipe 43, the damper 44, the drain pipe one 45, the drain pipe two 46, the pressure piston 48, the compression spring 50, the temperature sensor 51, the pressure sensor one 52, the pressure sensor two 53, and the pressure sensor three 54 of a hydraulic oil filter for a circuit breaker switch of the present invention are purchased on the market, and those skilled in the art only need to install and operate according to the attached operation manual, without the need for creative labor from those skilled in the art.

[0048] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A circuit breaker switch hydraulic oil filter, comprising an oil pump (1), an oil pumping pipe mechanism (2), a pipeline (3) and an oil return pump (4), wherein the oil inlet of the oil pump (1) is connected to the output end of the oil pumping pipe mechanism (2); characterized in that: It also includes an oil-water separation component (5), a filter component (6), an oil delivery pipe (7) and an oil storage tank (8). An oil storage chamber is arranged inside the oil storage tank (8). The input end of the oil-water separation component (5) is connected to the oil outlet of the oil pump (1) through the pipeline (3). The output end of the oil-water separation component (5) is connected to the input end of the filter component (6) through the pipeline (3). The filter component (6) is used to filter hydraulic oil. A filter element component made of electret material is arranged inside the filter component (6). The output end of the filter component (6) is connected to the input end of the oil delivery pipe (7). The output end of the oil delivery pipe (7) extends into the oil storage chamber of the oil storage tank (8). The oil extraction port of the oil return pump (4) is connected to the oil storage chamber of the oil storage tank (8). The filter assembly (6) comprises a filter box (40), a tubular filter element (41), an oil outlet piston assembly (42), an inner sliding tube (43), a damper (44), an oil outlet pipe (45), an oil outlet pipe (46), an oil storage pipe (47), a pressurizing piston (48), a piston pressure rod (49) and a compression spring (50). A filter chamber is arranged inside the filter box (40). The filter box (40) is provided with an oil inlet pipe and an oil outlet pipe connected to the filter chamber. The oil inlet pipe is located at the middle of the left end of the filter box (40), and the oil outlet pipe is located at the left end of the filter box (40). In the middle of the side wall, the filter box (40) is connected to the oil storage box (8) through an oil delivery pipe (7), the tubular filter element (41) is installed in the filter chamber of the filter box (40), the left and right ends of the tubular filter element (41) are respectively connected to the left and right inner walls of the filter box (40), a gap is provided between the tubular filter element (41) and the inner wall of the filter box (40), the oil inlet pipe is located in the center of the tubular filter element (41), the tubular filter element (41) is made of electret material, a large number of filter holes are provided on the side wall of the tubular filter element (41), and the oil outlet piston assembly (42) is slidably arranged The filter is installed in the filter box (40), piston plates are arranged at both ends of the oil outlet piston assembly (42), the two piston plates are in frictional contact with the inner wall of the tubular filter element (41), the inner sliding tube (43) is slidably installed in the oil inlet pipe of the filter box (40), the inner sliding tube (43) is connected to a piston plate of the oil outlet piston assembly (42), the damper (44) is installed at the right end of the filter chamber of the filter box (40), the piston rod of the damper (44) is connected to the oil outlet piston assembly (42), and the oil discharge pipe 1 (45) and the oil discharge pipe 2 (46) are respectively installed at the filter chamber of the filter box (40). The left and right ends of the filter box (40), the first oil drain pipe (45) and the second oil drain pipe (46) are both extended into the interior of the tubular filter element (41); an oil storage pipe (47) is installed on the outer wall of the filter box (40); the oil storage pipe (47) is communicated with the filter chamber of the filter box (40); a pressurizing piston (48) is slidably installed in the oil storage pipe (47); the lower end of the piston pressure rod (49) is connected to the pressurizing piston (48); one end of the compression spring (50) is connected to the piston pressure rod (49); and the other end of the compression spring (50) is connected to the oil storage pipe (47).

2. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The oil pumping pipe mechanism (2) comprises a hard pipe joint (9), a threaded sleeve (10), a plurality of connecting rings (11) and an inner hose (12). The threaded sleeve (10) is rotatably mounted on the outer wall of the input end of the hard pipe joint (9). The plurality of connecting rings (11) are sequentially arranged concentrically along an axis. Two adjacent connecting rings (11) are hingedly connected via a pin. The inner hose (12) is mounted on the inner walls of the plurality of connecting rings (11). The upper end of the inner hose (12) is connected to the input end of the hard pipe joint (9).

3. A circuit breaker switch hydraulic oil filter as claimed in claim 2, characterized in that: The invention also comprises a mounting frame (13), a first reel (14), a driving motor (15), a second reel (16), two synchronous wheels (17), a synchronous belt (18), a first cable (19) and a second cable (20), wherein the mounting frame (13) is mounted on the hard pipe joint (9), the first reel (14) is rotatably mounted on the right end of the mounting frame (13), the driving motor (15) is mounted on the mounting frame (13), the output shaft of the driving motor (15) is transmission-connected to the first reel (14), and the second reel (16) is The first reel (14) and the second reel (16) are rotatably mounted on the left end of the mounting frame (13), the ends of the first reel (14) and the second reel (16) are concentrically mounted with a synchronous wheel (17), the synchronous belt (18) is sleeved on the two synchronous wheels (17), the upper end of the first cable (19) is wound on the first reel (14), the lower part of the first cable (19) is connected to the right part of the plurality of connecting rings (11), the upper end of the second cable (20) is wound on the second reel (16), and the lower part of the second cable (20) is connected to the left part of the plurality of connecting rings (11).

4. A circuit breaker switch hydraulic oil filter as claimed in claim 3, characterized in that: It also comprises a rotating capillary (21) and a spiral blade (22), wherein the rotating capillary (21) is rotatably mounted on the lower end of the connecting ring (11) located at the bottom, an opening is provided on the side wall of the rotating capillary (21), and the spiral blade (22) is installed inside the rotating capillary (21), and the spiral blade (22) is located above the opening of the rotating capillary (21).

5. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The oil-water separation assembly (5) comprises a separation box (23), a vacuum tube (24), a heating plate (25) and a partition (26). A separation chamber is arranged inside the separation box (23). An input pipe and an exhaust pipe communicating with the separation chamber are arranged at both ends of the separation box (23). The input pipe and the exhaust pipe are connected to the pipeline (3) respectively. The exhaust pipe is located below the input pipe. The vacuum tube (24) is installed on the separation box (23). The vacuum tube (24) is communicated with the upper part of the separation chamber of the separation box (23). The heating plate (25) is installed in the separation chamber of the separation box (23). The heating plate (25) is arc-shaped. The heating plate (25) is located below the input pipe. The partition (26) is vertically installed in the separation chamber of the separation box (23). The partition (26) is located between the heating plate (25) and the exhaust pipe. A gap is arranged between the lower end of the partition (26) and the bottom of the separation chamber of the separation box (23).

6. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The invention also comprises an adsorption box (27), a plurality of strong magnets (28), a notch (29) and a low-speed zone (30). An adsorption chamber is arranged inside the adsorption box (27). The adsorption box (27) is provided with an input pipe and an output pipe connected to the adsorption chamber. The height of the output pipe is lower than the height of the input pipe. The input pipe is connected to the oil-water separation component (5) through a pipeline (3). The output pipe is connected to the filter component (6) through a pipeline (3). A plurality of strong magnets (28) are sequentially installed in the adsorption chamber of the adsorption box (27). The cross section of the strong magnets (28) is triangular. The height of the output pipe is lower than the height of the strong magnets (28). An upward inclined guide surface is arranged on one side of the strong magnet (28) facing the input pipe. A plurality of notches (29) are arranged on the inclined guide surface. A low-speed zone (30) is arranged at the connection between two strong magnets (28).

7. A circuit breaker switch hydraulic oil filter as claimed in claim 1, characterized in that: The oil pump (1) comprises a pump casing (31), a centrifugal impeller (32), a drive shaft (33) and a second drive motor (34). An inlet is arranged in the middle of the pump casing (31), and the inlet is connected to the oil pumping pipe mechanism (2) through a pipeline (3). An outlet is arranged on the side wall of the pump casing (31), and the outlet is connected to an oil-water separation component (5) through a pipeline (3). The centrifugal impeller (32) is rotatably mounted inside the pump casing (31), the centrifugal impeller (32) is aligned with the outlet, a suction port aligned with the inlet is arranged in the middle of the centrifugal impeller (32), the drive shaft (33) is concentrically mounted on the end surface of the centrifugal impeller (32) facing away from the inlet, the drive shaft (33) is transmission-connected to the output shaft of the second drive motor (34) through a transmission component, and the second drive motor (34) is mounted on a motor seat.

8. A circuit breaker switch hydraulic oil filter as claimed in claim 7, characterized in that: The transmission assembly comprises a first gear (35), a two-stage gear (36) and a second gear (37), and also comprises an inner shaft (38) and a propeller impeller (39). The drive shaft (33) is tubular, the first gear (35) is coaxially mounted on the output shaft of the second drive motor (34), the two-stage gear (36) is rotatably mounted on the motor base of the second drive motor (34), the first stage gear of the two-stage gear (36) is meshed with the first gear (35), the second gear (37) is coaxially mounted on the outer wall of the drive shaft (33), the second gear (37) is meshed with the second stage gear of the two-stage gear (36), the inner shaft (38) is rotatably mounted inside the drive shaft (33), the outer end of the inner shaft (38) is coaxially connected to the first gear (35), the inner end of the inner shaft (38) is mounted with the propeller impeller (39), and the propeller impeller (39) is located between the inlet of the pump housing (31) and the suction port of the centrifugal impeller (32).

9. A circuit breaker switch hydraulic oil filter as claimed in claim 6, characterized in that: The invention also comprises a temperature sensor (51), a pressure sensor 1 (52), a pressure sensor 2 (53) and a pressure sensor 3 (54). The temperature sensor (51) is installed on the pipeline (3). The temperature sensor (51) is used to detect the temperature of the hydraulic oil. The pressure sensor 1 (52) is installed between the oil-water separation component (5) and the adsorption box (27). The pressure sensor 1 (52) is used to detect the pressure of the hydraulic oil entering the adsorption box (27). The pressure sensor 2 (53) is installed between the adsorption box (27) and the filter component (6). The pressure sensor 2 (53) is used to detect the pressure of the hydraulic oil entering the filter component (6). The pressure sensor 3 (54) is installed on the oil delivery pipe (7). The pressure sensor 3 (54) is used to detect the pressure of the hydraulic oil output from the filter component (6).

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