Hydraulic oil dissolved air ultra-vacuum separation device

Abstract

The utility model discloses a hydraulic oil dissolved air ultra-vacuum separation device, and belongs to the technical field of hydraulic system oil purification. Comprising a separation oil cylinder, a vibration excitation plate assembly, a second pressure reducing valve, a second electromagnetic valve, an electric piston type separator, a separator outward one-way valve, a separator negative pressure sensor, a measurer negative pressure sensor, a piston type oil gas content measurer, a ball valve, a third electromagnetic valve, an oil pump, a negative pressure isolation oil tank, a negative pressure crude oil tank, a first pressure reducing valve and a first electromagnetic valve. The separation oil cylinder is arranged on the excitation plate assembly and comprises a left cylinder and a right cylinder which are isolated from each other, the bottoms of the left cylinder and the right cylinder are respectively provided with an oil way connector, the tops of the left cylinder and the right cylinder are respectively provided with an exhaust connector, a first oil port of the first electromagnetic valve is connected with a first oil port of the third electromagnetic valve, and a second oil port of the third electromagnetic valve is divided into two ways. Wherein one path is connected with a piston type oil gas content measurer. The method has the advantages that batch operation can be realized; exhaust of extracted air can be achieved, and the air is prevented from flowing back into oil liquid; and an on-line monitoring function of the oil gas content is added.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic system oil purification technology, specifically relating to a hydraulic oil dissolved air ultra-vacuum separation device. Background Technology

[0002] Because hydraulic fluids are produced and stored in the atmosphere, air inevitably dissolves into them. This dissolved air exists in extremely small, invisible particles, typically comprising 8% to 10% of the fluid. The adverse effects of dissolved air on hydraulic fluids include: firstly, it reduces the fluid's bulk modulus and rigidity, consequently degrading the hydraulic system; secondly, it causes cavitation, exacerbating the peeling and damage of surface materials on high-speed rotating parts such as pump impellers, leading to vibration and noise; and thirdly, in the closed hydraulic systems of underwater buoyancy equipment, the released dissolved air can cause buoyancy imbalances, affecting the equipment's submersion operation. Currently, there is no equipment in the production process that can quickly and effectively separate dissolved air from hydraulic fluids, and there is also no effective method for identifying and diagnosing dissolved air. Therefore, current production efficiency is low, and the quality of the hydraulic fluid is unstable, further impacting equipment performance.

[0003] In view of the aforementioned existing technology, the applicant has made beneficial designs, and the technical solutions to be introduced below are produced in this context. Utility Model Content

[0004] The objective of this invention is to provide a hydraulic oil dissolved air ultra-vacuum separation device, which has good oil-gas separation effect, can be used in batch operations, and can realize oil-gas content monitoring.

[0005] The present invention accomplishes its objective as follows: a hydraulic oil dissolved air ultravacuum separation device includes a separation cylinder, a vibrating plate assembly, a second pressure reducing valve, a second solenoid valve, an electric piston separator, a separator outward check valve, a separator negative pressure sensor, a measuring device negative pressure sensor, a piston-type oil-gas content measuring device, a first ball valve, a second ball valve, a third solenoid valve, an oil pump, a negative pressure isolation oil tank, a negative pressure crude oil tank, a first pressure reducing valve, and a first solenoid valve. The separation cylinder is mounted on the vibrating plate assembly and includes a left cylinder and a right cylinder isolated from each other. The left cylinder and the right cylinder each have an oil passage interface at the bottom and an exhaust interface at the top. The first solenoid valve is a three-position four-way solenoid valve. The first oil port of the first solenoid valve is connected to the first oil port of the third solenoid valve, and the second oil port of the third solenoid valve branches into two paths. One path connects to a piston-type oil and gas content measuring device via a manual first ball valve, and the other path connects to a negative pressure isolation oil tank via a manual second ball valve. The third port of the third solenoid valve is connected to the negative pressure isolation oil tank. The second port of the first solenoid valve is connected to the oil circuit interface of the left cylinder of the separation cylinder, and the fourth port of the first solenoid valve is connected to the oil circuit interface of the right cylinder of the separation cylinder. The third port of the first solenoid valve is connected to a first pressure reducing valve, which is connected to an oil pump. The oil pump is connected to the negative pressure oil tank. The exhaust ports of the left and right cylinders of the separation cylinder are connected to the first port of the second pressure reducing valve via pipelines equipped with outward one-way air valves. The second port of the second pressure reducing valve is connected to the negative pressure isolation oil tank. The third port of the second pressure reducing valve is connected to the first port of the second solenoid valve, which is connected to the electric piston-type separator.

[0006] In a specific embodiment of this utility model, the separating cylinder includes a left sealing end cap, an isolation piston ring, a tensioning screw, a separating cylinder, a cylinder end cap sealing ring, a right sealing end cap, an oil circuit interface, a sensor fixing plate, a cylinder magnetic induction sensor, a guide ring, a cylinder magnetic ring, a piston sealing ring, and a tensioning stud. The left and right sealing end caps are respectively located at both ends of the separating cylinder. A cylinder end cap sealing ring is provided between the separating cylinder and both the left and right sealing end caps. The left and right sealing end caps are fastened together by the cooperation of the tensioning screw and the tensioning stud. The right sealing end cap has exhaust ports on the top and oil passage ports on the bottom. The isolation piston ring is installed inside the separator cylinder. The isolation piston ring has three grooves spaced axially on its outer peripheral wall. The piston sealing ring, cylinder magnetic ring, and guide ring are arranged sequentially in the three grooves from left to right. There are multiple cylinder magnetic induction sensors, which are fixed to the outer wall of the separator cylinder by sensor fixing plates and are evenly distributed along the axial direction of the separator cylinder. The cylinder magnetic ring cooperates with the cylinder magnetic induction sensors to realize the status display and position control of the isolation piston ring.

[0007] In another specific embodiment of this utility model, the excitation plate assembly includes an excitation plate, a wire rope vibration isolator, a high-speed vibration motor, a vibration transmission frame, a motor mounting frame, and a hydraulic cylinder mounting frame. The front of the excitation plate is provided with the separation hydraulic cylinder and an electric piston separator. The high-speed vibration motor is fixed to the middle of the back of the excitation plate by the motor mounting frame. The vibration transmission frame is U-shaped, with the arc part clamped on the high-speed vibration motor, and the two ends are fixedly installed to the bottom of the excitation plate. The vibration transmission frame and the motor mounting frame cooperate to transmit high-frequency vibration to the excitation plate assembly. There is a pair of wire rope vibration isolators, which are respectively provided at both ends of the length direction of the bottom of the excitation plate. There is a pair of hydraulic cylinder mounting frames, one of which is fixedly installed to the left sealing end cover of the separation hydraulic cylinder, and the other is fixedly connected to the right sealing end cover of the separation hydraulic cylinder. The bottom of the pair of hydraulic cylinder mounting frames forms an installation flange, which is fixed to the excitation plate.

[0008] In another specific embodiment of this utility model, the electric piston separator includes a piston shaft seal ring, a cylinder end cover seal ring, a cylinder magnetic ring, a lead screw locking nut, a bearing locking nut, a lead screw, a lead screw motor, an upper sealing end cover, a cylinder, a flat thrust bearing, a bearing gasket, a wear ring, a cylinder piston YCC seal ring, a lower end cover gasket, a lower sealing end cover, a separator piston, and a cylinder magnetic sensor. The upper and lower sealing end covers are respectively located at the top and bottom of the cylinder. The lower sealing end cover has a cylinder end cover seal ring on its outer side that mates with the cylinder. The lower sealing end cover has a lower end cover gasket on its contact surface with the bottom of the cylinder. The lead screw motor is mounted on the upper sealing end cover via a motor mount. The separator piston is located inside the cylinder, dividing it into an upper cylinder and a lower cylinder. The upper end of the lead screw is connected to the lead screw motor. The separator piston has a bearing housing cavity at its upper end and a lead screw housing cavity at the bottom of the bearing housing cavity. The planar thrust bearing is disposed in the bearing housing cavity, and a bearing gasket is placed at the bottom of the planar thrust bearing. The bearing lock nut is threaded to the outer wall of the bearing housing cavity to support the planar thrust bearing. The force bearing is fixed, and the lower end of the lead screw extends into the lead screw receiving cavity after passing through the bearing lock nut and the flat thrust bearing. The lead screw lock nut is threaded to the lower end of the lead screw. The cylinder piston YCC sealing ring and the cylinder magnetic ring are alternately sleeved on the separator piston. There is a pair of cylinder piston YCC sealing rings, and the cylinder magnetic ring is located between the pair of cylinder piston YCC sealing rings. When the cylinder magnetic ring is equipped with a magnetic sensor, it is used to control the displacement of the separator piston. The wear-resistant ring is wrapped around the cylinder magnetic ring. The lower sealing end cap has a longitudinally formed section in the middle that connects to the pipeline. The second solenoid valve is connected to the intake channel, and two air pipes extend to the left and right sides respectively. One air pipe is used for exhaust and is equipped with an outward one-way valve of the separator. The other air pipe serves as a pressure measuring port, which is connected to the separator negative pressure sensor through an inward one-way valve to measure the pressure inside the cylinder. The separator piston forms a piston shaft at the bottom. The piston shaft is adapted to the upper port of the intake channel of the lower sealing end cover. The piston shaft is equipped with a piston shaft sealing ring. Multiple cylinder magnetic sensors are spaced apart along the height direction of the outer edge of the cylinder.

[0009] In another specific embodiment of this utility model, the piston-type oil and gas content measuring device includes an end cover transition plate, an oil-containing bushing, a bottom sealing end cover, a measuring device cylinder, a measuring device magnetic ring, a measuring device piston YCC sealing ring, a top cover sealing ring, a top sealing end cover, a sealing buffer pad, a measuring device piston, a piston rod, a pull-wire sensor fixing bracket, a pull-wire sensor, a connecting rod, and a Y-type connector. The top sealing end cover and the bottom sealing end cover are respectively located at the top and bottom of the measuring device cylinder. The top sealing end cover extends measuring device oil pipes to the left and right sides respectively. One measuring device oil pipe is connected to a third solenoid valve and a first ball valve through a pipeline, and the other measuring device oil pipe is connected to a measuring device negative pressure sensor. The top cover sealing ring is located on the contact surface between the top sealing end cover and the top of the measuring device cylinder. The bottom sealing end cover is supported on the end cover transition plate and penetrates the end cover transition plate. The measuring device piston is... Inside the measuring instrument cylinder, there is a pair of YCC sealing rings for the measuring instrument piston, spaced apart vertically. The measuring instrument magnetic ring is fitted on the measuring instrument piston and located between a pair of top cap sealing rings. The piston rod is located below the measuring instrument piston, and its top end is fixedly connected to the measuring instrument piston by a screw. The top sealing end cap has a sealing buffer pad on its inner wall facing the screw. The bottom end of the piston rod extends downward through the oil-impregnated bushing inside the bottom sealing end cap and connects to the Y-type connector. A gravity block is connected to the Y-type connector. The pull wire sensor mounting bracket is fixedly connected to the end cap transition plate. The pull wire sensor is fixed on the pull wire sensor mounting bracket. The bottom end of the piston rod is also connected to one end of a connecting rod, and the other end of the connecting rod is connected to the pull wire head of the pull wire sensor. The pull wire sensor is used to collect the displacement data of the measuring instrument piston.

[0010] In another specific embodiment of this utility model, a device fixing plate is also included. The separation cylinder, vibration plate assembly, second pressure reducing valve, second solenoid valve, electric piston separator, separator outward one-way valve, separator negative pressure sensor, measuring device negative pressure sensor, piston-type oil and gas content measuring device, first ball valve, second ball valve, third solenoid valve, oil pump, first pressure reducing valve and first solenoid valve are mounted on the device fixing plate. The wire rope vibration isolator is used to reduce the vibration transmitted to the device fixing plate.

[0011] Due to the adoption of the above-mentioned structure, this utility model has the following advantages compared with the prior art: First, batch operation can be achieved by switching the oil cylinder left and right; Second, by working in conjunction with the electric piston separator, solenoid valve and check valve, air can be extracted and discharged, preventing air from flowing back into the oil; Third, by installing the separator on the vibrating plate assembly, on the one hand, the oil agitation is accelerated, increasing the release of air from the oil, and on the other hand, the friction of oil molecules is accelerated, preventing air from quickly dissolving back into the oil after contact with it; Fourth, the online monitoring function of oil and gas content is added, integrating operation and detection into one. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 This is a block diagram illustrating the principle of oil injection in the left cylinder and oil discharge in the right cylinder of this utility model.

[0015] Figure 4 This is a block diagram illustrating the state and detection principle of oil injection in the right cylinder and oil discharge in the left cylinder according to this utility model.

[0016] Figure 5 This is a schematic diagram of the structure of the separating oil cylinder described in this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the excitation plate assembly described in this utility model;

[0018] Figure 7 This is a cross-sectional view of the electric piston separator described in this utility model;

[0019] Figure 8 This is a cross-sectional view of the piston-type oil and gas content measuring device described in this utility model.

[0020] In the diagram: 1. Separating cylinder, 101. Left sealing end cap, 102. Isolating piston ring, 1021. Groove, 103. Tensioning screw, 104. Separating cylinder, 105. Cylinder end cap sealing ring, 106. Right sealing end cap, 107. Oil circuit interface, 108. Sensor mounting plate, 109. Cylinder magnetic induction sensor, 110. Guide ring, 111. Cylinder magnetic ring, 112. Piston sealing ring, 113. Tensioning stud, 114. Exhaust interface; 2. Vibration plate assembly, 201. Vibration plate, 202. Steel wire rope vibration isolator, 203. High-speed vibration motor 204. Vibration transmission frame; 205. Motor mounting frame; 206. Cylinder mounting frame; 2061. Mounting flange; 3. Second pressure reducing valve; 4. Second solenoid valve; 5. Electric piston separator; 501. Piston shaft seal ring; 502. Cylinder end cover seal ring; 503. Cylinder magnetic ring; 504. Lead screw lock nut; 505. Bearing lock nut; 506. Lead screw; 507. Lead screw motor; 508. Upper sealing end cover; 509. Cylinder; 510. Flat thrust bearing; 511. Bearing gasket; 512. Wear ring; 513. Cylinder piston Y CC sealing ring, 514. Lower end cover gasket, 515. Lower sealing end cover, 5151. Cylinder intake passage, 5152. Air pipe, 516. Separator piston, 5161. Bearing housing, 5162. Lead screw housing, 5163. Piston shaft, 517. Cylinder magnetic sensor; 6. Outward one-way valve; 7. Separator negative pressure sensor; 8. Measuring device negative pressure sensor; 9. Piston-type oil and gas content measuring device, 901. End cover transition plate, 902. Oil-containing bushing, 903. Bottom sealing end cover, 904. Measuring device cylinder body, 905. Measuring device magnetic ring, 9 06. Measuring instrument piston YCC sealing ring; 907. Top cover sealing ring; 908. Top sealing end cover; 9081. Measuring instrument oil pipe; 909. Sealing buffer pad; 910. Measuring instrument piston; 911. Piston rod; 912. Pull wire sensor mounting bracket; 913. Pull wire sensor; 914. Connecting rod; 915. Y-type connector; 10. First ball valve; 11. Second ball valve; 12. Third solenoid valve; 13. Oil pump; 14. Negative pressure isolation oil tank; 15. Negative pressure crude oil tank; 16. First pressure reducing valve; 17. First solenoid valve; 18. Device mounting plate. Detailed Implementation

[0021] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0022] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.

[0023] This utility model relates to a hydraulic oil dissolved air ultravacuum separation device. It utilizes piston movement to create ultravacuum suction, achieving a dissolved air separation pressure of 100-6700 Pa in the hydraulic oil, thereby separating the dissolved air from the hydraulic oil. Various valves are then used to isolate the dissolved air from the hydraulic oil. This utility model is mainly used to treat hydraulic oil to separate dissolved air, preventing the precipitation of dissolved air during subsequent use and thus preventing instability in the hydraulic system. This utility model shares common functional objectives with common hydraulic oil treatment devices, all aiming to purify hydraulic oil.

[0024] See Figure 1 and Figure 2 This utility model includes a hydraulic oil dissolved air ultra-vacuum separation device, comprising a device fixing plate 18 and a separation cylinder 1, a vibration plate assembly 2, a second pressure reducing valve 3, a second solenoid valve 4, an electric piston separator 5, a separator outward one-way valve 6, a separator negative pressure sensor 7, a measuring device negative pressure sensor 8, a piston-type oil-gas content measuring device 9, a first ball valve 10, a second ball valve 11, a third solenoid valve 12, an oil pump 13, a first pressure reducing valve 16, and a first solenoid valve 17, and also includes a negative pressure isolation oil tank 14 and a negative pressure crude oil tank 15.

[0025] The separating cylinder 1 is mounted on the vibrating plate assembly 2 and includes a left cylinder and a right cylinder that are isolated from each other. The left and right cylinders each have an oil passage interface 107 at the bottom and an exhaust interface 114 at the top. The first solenoid valve 17 is a three-position four-way solenoid valve, the second solenoid valve 4 is a two-position two-way solenoid valve, and the third solenoid valve 12 is a two-position three-way solenoid valve. The first pressure reducing valve 16 and the second pressure reducing valve 3 are one inlet and one outlet valve. The first oil port of the first solenoid valve 17 is connected to the first oil port of the third solenoid valve 11. The second oil port of the third solenoid valve 11 branches into two paths: one path connects to the piston-type oil vapor content measuring instrument 9 via the first ball valve 10, and the other path connects to the negative pressure isolation oil tank 14 via the second ball valve 11. The third oil port of the third solenoid valve 12 is connected to the negative pressure isolation oil tank 14. The second oil port of the first solenoid valve 17 is connected to the oil passage interface 107 of the left cylinder of the separating cylinder 1, and the fourth oil port of the first solenoid valve 17 is connected to the oil passage interface 107 of the right cylinder of the separating cylinder 1. The three oil ports are connected to the first pressure reducing valve 16, which is connected to the oil pump 13. The oil pump 13 is connected to the negative pressure oil tank 15. The exhaust ports 114 of the left and right cylinders of the separator cylinder 1 are connected to a three-way valve via a compression fitting, and then connected to the first port of the second pressure reducing valve 3 via an outward one-way valve. The second port of the second pressure reducing valve 3 is connected to the negative pressure isolation oil tank 14. The third port of the second pressure reducing valve 3 is connected to the first port of the second solenoid valve 4, and the second port of the second solenoid valve 4 is connected to the electric piston separator 5. The second solenoid valve 4 is open when venting and closed when venting.

[0026] In this embodiment, a first pressure reducing valve 16 is installed at the rear end of the oil pump 13, with a pressure set to 1.5 MPa, to control the pressure of the input oil and prevent damage to the separator cylinder 1. A second pressure reducing valve 3 is installed between the separator cylinder 1 and the electric piston separator 5, with a pressure set to 1 MPa, to expel trapped air from the separator cylinder 1 when it is full of oil. The hydraulic oil in the negative pressure oil tank 15 can be pumped into the separator cylinder 1 by the oil pump 13. The first solenoid valve 17 is equivalent to a reversing valve, controlled by the control system, to change the direction of the oil flow and inject it into the left or right cylinder of the separator cylinder 1. The separator cylinder 1 can be as follows: Figure 3 As shown, oil enters from the left cylinder and exits from the right cylinder; alternatively, it could be as follows: Figure 4The diagram shows oil entering from the right cylinder and exiting from the left cylinder. Taking the separation cylinder 1 with oil entering from the left cylinder and exiting from the right cylinder as an example, the specific oil path is as follows: Hydraulic oil from the negative pressure oil tank 15 enters the first pressure reducing valve 16 via the oil pump 13, and then from the first pressure reducing valve 16 to the first solenoid valve 17. The second port of the first solenoid valve 17 sends hydraulic oil into the left cylinder of the separation cylinder 1, and the oil exiting the right cylinder of the separation cylinder 1 is sent to the fourth port of the first solenoid valve 17. The first solenoid valve 17 sends the separated hydraulic oil to the third solenoid valve 12 via the first port. Then, the following three paths will occur: First, hydraulic oil enters the negative pressure isolation oil tank 14 from the third solenoid valve 12; second, hydraulic oil enters the negative pressure isolation oil tank 14 from the third solenoid valve 12 via the second ball valve 11; third, hydraulic oil enters the piston-type oil-gas content measuring device 9 from the third solenoid valve 12 via the first ball valve 10.

[0027] See Figure 5The separating cylinder 1 includes a left sealing end cap 101, an isolation piston ring 102, a tensioning screw 103, a separating cylinder 104, a cylinder end cap sealing ring 105, a right sealing end cap 106, an oil circuit interface 107, a sensor fixing plate 108, a cylinder magnetic induction sensor 109, a guide ring 110, a cylinder magnetic ring 111, a piston sealing ring 112, and a tensioning stud 113. The left sealing end cap 101 and the right sealing end cap 106 are respectively located at both ends of the separating cylinder 104. A cylinder end cap sealing ring 105 is provided between the separating cylinder 104 and both the left and right sealing end caps 101 and 106. The left and right sealing end caps 101 and 106 are fastened together by the cooperation of the tensioning screw 103 and the tensioning stud 113. The cylinder end cap sealing rings 105 at the left sealing end cap 101 and the right sealing end cap 106 use two O-rings of different specifications, thereby achieving axial and radial double sealing. The left sealing end cap 101 and the right sealing end cap 106 each have an exhaust port 114 at the top, and a one-way valve is installed at the exhaust port 114 to prevent cross-contamination of oil and gas between the left and right cylinders, and to prevent backflow of gas from the electric piston separator 5 when the piston is pressed down back into the hydraulic oil. The left sealing end cap 101 and the right sealing end cap 106 each have an oil passage port 107 at the bottom. To avoid affecting the vibration effect of the vibrating plate assembly 2, the oil and air pipes of the separator cylinder 1 are both high-pressure hoses, and the remaining high-pressure parts are connected using stainless steel oil pipes. The isolation piston ring 102 is disposed within the separator cylinder 104. Three grooves 1021 are axially spaced on the outer peripheral wall of the isolation piston ring 102. The piston sealing ring 112, the cylinder magnetic ring 111, and the guide ring 110 are sequentially disposed within the three grooves 1021 from left to right. Multiple cylinder magnetic induction sensors 109 are provided, fixed to the outer wall of the separator cylinder 104 by sensor fixing plates 108 and evenly distributed along the axial direction of the separator cylinder 104. The cylinder magnetic ring 111 cooperates with the cylinder magnetic induction sensors 109 to locate the position of the isolation piston ring 102, enabling status display and position control of the isolation piston ring 102. In this embodiment, five cylinder magnetic induction sensors 109 are shown. The separator cylinder 104 is a circular cylinder made of transparent acrylic, facilitating observation of the position of the isolation piston ring 102 and the oil status of the left and right cylinders. When hydraulic oil is injected into the left cylinder, the hydraulic oil pushes the isolating piston ring 102 to the right, discharging the hydraulic oil from the right cylinder into the separator cylinder 104. When hydraulic oil is injected into the right cylinder, the hydraulic oil pushes the isolating piston ring 102 to the left, discharging the hydraulic oil from the left cylinder into the separator cylinder 104. A peristalsis sensor is installed on the pressure relief hose of the second pressure reducing valve 3. When the magnetic sensor signal and the peristalsis sensor signal are detected when the piston of the separator cylinder 1 moves to one end, the pump can be automatically stopped.

[0028] See Figure 6The excitation plate assembly 2 includes an excitation plate 201, a wire rope vibration isolator 202, a high-speed vibration motor 203, a vibration transmission frame 204, a motor mounting frame 205, and a cylinder mounting frame 206. The front of the excitation plate 201 is equipped with the separation cylinder 1 and the electric piston separator 5. The high-speed vibration motor 203 is fixed to the middle of the back of the excitation plate 201 via the motor mounting frame 205. The vibration transmission frame 204 is U-shaped, with its arc-shaped portion clamped onto the high-speed vibration motor 203, and its two ends fixedly installed to the bottom of the excitation plate 201. The vibration transmission frame 204 and the motor mounting frame 205 cooperate to transmit high-frequency vibration to the excitation plate assembly 2. A pair of wire rope vibration isolators 202 are respectively located at both ends along the length of the bottom of the excitation plate 201 to reduce vibration transmission to the device mounting plate 18. The cylinder mounting brackets 206 are in pairs. One cylinder mounting bracket 206 is fixedly installed to the left sealing end cover 101 of the separating cylinder 1, and the other cylinder mounting bracket 206 is fixedly connected to the right sealing end cover 106 of the separating cylinder 1. The bottom of the pair of cylinder mounting brackets 206 forms mounting flanges 2061, which are fixed to the vibrating plate 201. While the electric piston separator 5 is working, the high-speed vibration motor 203 is turned on to vibrate the separating cylinder 104, accelerating the extraction of dissolved air and accelerating the release of tension between oil molecules.

[0029] See Figure 7The electric piston separator 5 includes a piston shaft seal ring 501, a cylinder end cap seal ring 502, a cylinder magnetic ring 503, a lead screw locking nut 504, a bearing locking nut 505, a lead screw 506, a lead screw motor 507, an upper sealing end cap 508, a cylinder 509, a flat thrust bearing 510, a bearing gasket 511, a wear ring 512, a cylinder piston YCC seal ring 513, a lower end cap gasket 514, a lower sealing end cap 515, a separator piston 516, and a cylinder magnetic sensor 517. The cylinder 509 is a circular cylinder. The upper sealing end cap 508 and the lower sealing end cap 515 are respectively located at the top and bottom of the cylinder 509. The lower sealing end cap 515 is a transparent acrylic end cap used to observe the oil and gas state in the cylinder 509. The lower sealing end cap 515 has a cylinder end cap sealing ring 502 on its outer side that mates with the cylinder 509, and a lower end cap gasket 514 on its contact surface with the bottom of the cylinder 509. The lead screw motor 507 is mounted on the upper sealing end cap 508 via a motor mount. The separator piston 516 is located inside the cylinder 509, dividing the cylinder 509 into an upper cylinder and a lower cylinder. The upper end of the lead screw 506 is connected to the lead screw motor 507. The separator piston 516 has a bearing receiving cavity 5161 at its upper end and a lead screw receiving cavity 5162 at the bottom of the bearing receiving cavity 5161. The planar thrust bearing 510 is disposed in the bearing receiving cavity 5161, and a bearing gasket 511 is placed at the bottom of the planar thrust bearing 510. The bearing locking nut 505 is threadedly connected to the outer wall of the bearing receiving cavity 5161 to fix the planar thrust bearing 510. The lower end of the lead screw 506 passes through the bearing locking nut 505 and the planar thrust bearing 510 and extends into the lead screw receiving cavity 5162. The lead screw locking nut 504 is threadedly connected to the lower end of the lead screw 506. The cylinder piston YCC sealing ring 513 and the cylinder magnetic ring 503 are spaced and sleeved on the separator piston 516. There is a pair of cylinder piston YCC sealing rings 513, and the cylinder magnetic ring 503 is located between the pair of cylinder piston YCC sealing rings 513. The wear-resistant ring 512 is wrapped around the cylinder magnetic ring 503. The cylinder magnetic ring 503 can be used with a magnetic sensor 517 to control the displacement of the separator piston 516. The rotational motion of the lead screw 506 is converted into the linear reciprocating motion of the cylinder piston YCC sealing ring 513. The lower sealing end cap 515 has an air intake channel 5151 formed longitudinally in the middle, and two air pipes 5152 extend to the left and right sides respectively. One air pipe 5152 is used for exhaust and is equipped with a separator outward one-way valve 6, while the other air pipe 5152 serves as a pressure measuring port. This pressure measuring port is connected to a separator negative pressure sensor 7 via an inward one-way valve to measure the pressure inside the cylinder 509. The air intake channel 5151 is connected to the exhaust port 114 of the separator cylinder 1 via a second solenoid valve 4 and a second pressure reducing valve 4.The separator piston 516 forms a piston shaft 5163 at the bottom. The piston shaft 5163 is adapted to the upper port of the air intake passage 5151 of the lower sealing end cover 515. The piston shaft seal ring 501 is provided on the piston shaft 5163. The piston shaft seal ring 501 and the cylinder end cover seal ring 502 cooperate to seal the lower cylinder of the cylinder 509. At the same time, the piston shaft seal ring 501 has a buffering effect. A plurality of cylinder magnetic sensors 517 are arranged at intervals along the height direction of the outer edge of the cylinder 509. Two are used here.

[0030] The described screw motor 507 drives the separator piston 516 to move upward in the cylinder 509, so as to extract the dissolved air in the separation oil cylinder 1. When the separator piston 516 moves to the upper limit or the separator negative pressure sensor 7 measures the set pressure value, which is -0.095 pa in this embodiment, the screw motor 507 stops rotating. After waiting for 30 seconds, the second solenoid valve 4 is closed, and the screw motor 507 rotates in the reverse direction, driving the separator piston 516 to rotate downward, and discharging the air from the outward one-way valve 6 at the exhaust port of the electric piston type separator 5. Repeat the above actions N times until the gas content rate of the oil liquid is qualified.

[0031] See Figure 8The piston-type oil and gas content measuring instrument 9 includes an end cap transition plate 901, an oil-containing bushing 902, a bottom sealing end cap 903, a measuring instrument cylinder 904, a measuring instrument magnetic ring 905, a measuring instrument piston YCC sealing ring 906, a top cap sealing ring 907, a top sealing end cap 908, a sealing buffer pad 909, a measuring instrument piston 910, a piston rod 911, a pull-wire sensor fixing bracket 912, a pull-wire sensor 913, a connecting rod 914, and a Y-type connector 915. The measuring instrument cylinder 904 is a circular hydraulic cylinder. The top sealing end cap 908 and the bottom sealing end cap 903 are respectively located at the top and bottom of the measuring instrument cylinder 904. The top sealing end cap 908 is a transparent acrylic end cap used to observe the oil and gas state within the measuring instrument cylinder 904. The top sealing end cap 908 extends measuring instrument oil pipes 9081 to the left and right sides respectively. One measuring instrument oil pipe 9081 is connected to the first ball valve 10 and the third solenoid valve 12 via a pipeline, and the other measuring instrument oil pipe 9081 is connected to the measuring instrument negative pressure sensor 8. The top cap sealing ring 907 is disposed on the contact surface between the top sealing end cap 908 and the top of the measuring instrument cylinder 904. The bottom sealing end cap 903 is supported on the end cap transition plate 901 and penetrates the end cap transition plate 901. The measuring instrument piston 910 is disposed inside the measuring instrument cylinder 904. There is a pair of measuring instrument piston YCC sealing rings 906, which are fitted onto the measuring instrument piston 910 with an upper and lower gap. The measuring instrument magnetic ring 905 is fitted onto the measuring instrument piston 910 and is located at the pair of measuring instrument piston YCC sealing rings. Between the sealing rings 906, the piston rod 911 is located below the measuring piston 910, and its top end is fixedly connected to the measuring piston 910 by a screw. The top sealing end cap 908 has a sealing buffer pad 909 on its inner wall facing the screw. The bottom end of the piston rod 911 extends downward through the oil-impregnated bushing 902 inside the bottom sealing end cap 903 and connects to the Y-type connector 915. A standard gravity block is connected to the Y-type connector 915, and the piston rod 911 moves downward by the gravity of the gravity block itself. The pull-wire sensor mounting bracket 912 is fixedly connected to the end cap transition plate 901, and the pull-wire sensor 913 is fixed on the pull-wire sensor mounting bracket 912. The bottom end of the piston rod 911 is also connected to one end of the connecting rod 914, and the other end of the connecting rod 914 is connected to the pull wire head of the pull-wire sensor 913. The pull-wire sensor 913 is used to collect the displacement data of the measuring piston 910 for subsequent calculation of oil and gas content.

[0032] The separated oil is injected into the measuring cylinder 904 via a solenoid valve logic control. The system clicks "Start Measurement," slowly releases the gravity block, and gradually increases it until the negative pressure sensor 8 of the measuring device reaches -0.095 Pa. The system reads the displacement of the wire sensor 913, and the oil gas content α can be calculated using the volume change conversion formula.

[0033]

[0034] Where V1 is the changed volume, V2 is the volume after depressurization, S is the area of ​​the measuring cylinder, L1 is the initial position of the pull wire sensor 913, and L2 is the position of the pull wire sensor 913 after depressurization.

[0035] Furthermore, the negative pressure isolation oil tank 14 comprises an oil tank, an isolation piston, an ultrasonic transducer, an air pump, and a negative pressure gauge. The oil pump 13 draws the air in the negative pressure isolation oil tank 14 to below -0.6 MPa, and the isolation piston further isolates the air from the oil. The ultrasonic transducer vibrates the oil, releasing the tension between oil molecules. By using the negative pressure isolation oil tank 14, the separated oil is injected into it, preventing prolonged contact between the oil and air. The air pump and isolation piston prevent air from dissolving back into the oil, and the ultrasonic transducer also helps release the tension between oil molecules, preventing air from rapidly dissolving back into the hydraulic oil during subsequent use.

[0036] The separation method of the hydraulic oil dissolved air ultravacuum separation device includes the following steps.

[0037] Step S1) is oil injection, specifically:

[0038] S11) Oil injection preparation: Select left cylinder oil injection. The system automatically opens the left channel of the first solenoid valve 17, closes the second solenoid valve 4, and opens the third solenoid valve 12.

[0039] S12) Start the oil injection and turn on the oil pump 13. The oil pump 13 injects the hydraulic crude oil that has not been separated from the oil and gas in the negative pressure crude oil tank 15 into the left cylinder of the separation cylinder 1. At the same time, through the action of the piston in the cylinder, the separated oil after oil and gas separation in the right cylinder of the separation cylinder 1 is discharged into the negative pressure isolation oil tank 14. When the cylinder piston moves to the designated position, the pump stops automatically.

[0040] S13) Replenishing fluid: Select the left cylinder for replenishing fluid. The system will automatically open the left channel of the first solenoid valve 17 and close the second solenoid valve 4 and the third solenoid valve 12. The oil pump 13 can be forcibly started to pump hydraulic oil into the left cylinder of the separation cylinder 1 to drive out the air in the left cylinder.

[0041] Step S2) involves vacuum separation and evacuation, specifically:

[0042] S21) In preparation for air extraction, the system automatically closes the first solenoid valve 17 and the third solenoid valve 12, and opens the second solenoid valve 4.

[0043] S22) Separate the exhaust gas, start the screw motor 507 of the electric piston separator 5, drive the separator piston 516 up and down N times, using the oil-gas separation pressure of 100-6700pa, when the separator negative pressure sensor 7 reaches -0.095Mpa or the screw motor 507 moves to the upper limit, the separator piston 516 stops moving upward, close the second solenoid valve 4, pause for n seconds, and then the separator piston 516 begins to move slowly downward. Due to the action of the outward one-way valve 6, the extracted air is discharged outward through the side one-way valve of the electric piston separator 5.

[0044] S23) Accelerate the disturbance. While separating and pumping air, automatically activate the high-frequency excitation plate assembly 2 to fully agitate the hydraulic oil to release dissolved air.

[0045] Step S3) is to measure the gas content.

[0046] S31) Measurement preparation, all valves automatically close;

[0047] S32) Inject oil, open the right channel of the first solenoid valve 17, start the oil pump 13 after 2 seconds, pump the crude oil into the right cylinder of the oil separator 1, and at the same time squeeze the separated oil from the left cylinder to the scale line of the piston-type oil-gas content measuring instrument 9, and automatically close all solenoid valves.

[0048] S33) Measurement: Close the first ball valve 11 at the left end of the piston-type oil and gas content measuring device 9, release the gravity block until the pressure detected by the negative pressure sensor 8 of the measuring device is less than -0.095pa, and measure the displacement of the measuring device piston 910 by the pull wire sensor 913. The dissolved air content in the hydraulic oil is automatically calculated and it is determined whether it is qualified.

[0049] Step S4) involves draining oil into the negative pressure isolation oil tank 14, specifically:

[0050] S41) Oil draining preparation: The system automatically opens the right channel of the first solenoid valve 17 and the third solenoid valve 12, and closes the second solenoid valve 4.

[0051] S42) Start the oil injection and start the oil pump 13 to inject the hydraulic crude oil that has not been separated into the right cylinder of the separation cylinder 1. At the same time, through the action of the isolation piston ring 102 in the cylinder, the separated oil after oil-gas separation in the left cylinder of the separation cylinder 1 is discharged into the negative pressure isolation oil tank 14. When the isolation piston ring 102 of the separation cylinder 1 moves to the designated position, the pump stops automatically.

[0052] The above describes the oil-gas separation process for the hydraulic oil in the left cylinder of separator 1. The right cylinder repeats the same process. Once the oil-gas separation is stabilized, parameters can be set, and the system will automatically run until the negative pressure isolation tank 14 is full, at which point the oil is allowed to settle and be stored. The automatic control of this invention is achieved through a control system and its associated control panel.

Claims

1. A hydraulic oil-air dissolution ultravacuum separation device, characterized in that: Includes a separator cylinder (1), a vibrating plate assembly (2), a second pressure reducing valve (3), a second solenoid valve (4), an electric piston separator (5), a separator outward check valve (6), a separator negative pressure sensor (7), a measuring device negative pressure sensor (8), a piston-type oil and gas content measuring device (9), a first ball valve (10), a second ball valve (11), a third solenoid valve (12), an oil pump (13), a negative pressure isolation oil tank (14), a negative pressure crude oil tank (15), a first pressure reducing valve (16), and a first solenoid valve (17). The separating cylinder (1) is mounted on the vibrating plate assembly (2) and includes a left cylinder and a right cylinder that are isolated from each other. The left cylinder and the right cylinder have oil passage interfaces (107) at the bottom and exhaust interfaces (114) at the top. The first solenoid valve (17) is a three-position four-way solenoid valve. The first oil port of the first solenoid valve (17) is connected to the first oil port of the third solenoid valve (12). The second oil port of the third solenoid valve (12) splits into two paths, one of which is connected to the piston-type oil and gas through the first ball valve (10) manually. The content measuring instrument (9) is connected to the negative pressure isolation oil tank (14) via a manual second ball valve (11). The third port of the third solenoid valve (12) is connected to the negative pressure isolation oil tank (14). The second port of the first solenoid valve (17) is connected to the oil circuit interface (107) of the left cylinder of the separation cylinder (1). The fourth port of the first solenoid valve (17) is connected to the oil circuit interface (107) of the right cylinder of the separation cylinder (1). The third port of the first solenoid valve (17) is connected to the first pressure reducing valve (16). The first pressure reducing valve (16) is connected to the oil pump. (13) The oil pump (13) is connected to the negative pressure crude oil tank (15). The exhaust port (114) of the left cylinder and the exhaust port (114) of the right cylinder of the separation cylinder (1) are respectively connected to the first port of the second pressure reducing valve (3) through the pipeline with an outward one-way air valve. The second port of the second pressure reducing valve (3) is connected to the negative pressure isolation oil tank (14). The third port of the second pressure reducing valve (3) is connected to the first port of the second solenoid valve (4). The second port of the second solenoid valve (4) is connected to the electric piston separator (5).The separation cylinder (1) includes a left sealing end cap (101), an isolation piston ring (102), a tensioning screw (103), a separation cylinder (104), a cylinder end cap sealing ring (105), a right sealing end cap (106), an oil circuit interface (107), a sensor fixing plate (108), a cylinder magnetic induction sensor (109), a guide ring (110), a cylinder magnetic ring (111), a piston sealing ring (112), and a tensioning stud (114). 3) The left sealing end cap (101) and the right sealing end cap (106) are respectively located at both ends of the separating cylinder (104). A cylinder end cap sealing ring (105) is provided between the separating cylinder (104) and both the left sealing end cap (101) and the right sealing end cap (106). The left sealing end cap (101) and the right sealing end cap (106) are fastened together by the cooperation of a tensioning screw (103) and a tensioning stud (113). The left sealing end cap... The cover (101) and the right sealing end cover (106) are respectively provided with exhaust ports (114) at the top and oil circuit ports (107) at the bottom. The isolation piston ring (102) is set in the separation cylinder (104). The isolation piston ring (102) has three grooves (1021) spaced axially on its outer peripheral wall. The piston sealing ring (112), the cylinder magnetic ring (111) and the guide ring (110) are arranged in the three grooves (1021) from left to right. There are multiple cylinder magnetic induction sensors (109). The multiple cylinder magnetic induction sensors (109) are fixed on the outer wall of the separation cylinder (104) by the sensor fixing plate (108) and are evenly distributed along the axial direction of the separation cylinder (104). The cylinder magnetic ring (111) cooperates with the cylinder magnetic induction sensor (109) to realize the status display and position control of the isolation piston ring (102).The vibrating plate assembly (2) includes a vibrating plate (201), a wire rope vibration isolator (202), a high-speed vibration motor (203), a vibration transmission frame (204), a motor mounting frame (205), and a cylinder mounting frame (206). The front of the vibrating plate (201) is provided with the separation cylinder (1) and an electric piston separator (5). The high-speed vibration motor (203) is fixed to the middle of the back of the vibrating plate (201) by the motor mounting frame (205). The vibration transmission frame (204) is U-shaped, with the arc part clamped on the high-speed vibration motor (203), and the two ends are fixedly installed to the bottom of the vibrating plate (201). The guide frame (204) and motor mounting bracket (205) cooperate to transmit high-frequency vibration to the excitation plate assembly (2). A pair of wire rope vibration isolators (202) are respectively located at both ends of the bottom of the excitation plate (201) along its length. A pair of cylinder mounting brackets (206) are also present. One cylinder mounting bracket (206) is fixedly installed to the left sealing end cap (101) of the separation cylinder (1), while the other cylinder mounting bracket (206) is fixedly connected to the right sealing end cap (106) of the separation cylinder (1). The bottom of each pair of cylinder mounting brackets (206) forms an installation flange (2061), which is used to fix them to the excitation plate (201).

2. The hydraulic oil dissolved air ultravacuum separation device according to claim 1, characterized in that: The electric piston separator (5) includes a piston shaft seal ring (501), a cylinder end cover seal ring (502), a cylinder magnetic ring (503), a lead screw locking nut (504), a bearing locking nut (505), a lead screw (506), a lead screw motor (507), an upper sealing end cover (508), a cylinder (509), a flat thrust bearing (510), a bearing gasket (511), a wear ring (512), a cylinder piston YCC seal ring (513), a lower end cover gasket (514), a lower sealing end cover (515), a separator piston (516), and a cylinder magnetic sensor (517). The upper sealing end cover (508) and the lower sealing end cover (515) are respectively located at the top and bottom of the cylinder (509). The lower sealing end cover (515) has a cylinder end cover sealing ring (502) on its outer side surface that mates with the cylinder (509). The lower sealing end cover (515) has a lower end cover gasket (514) on its contact surface with the bottom of the cylinder (509). The lead screw motor (507) is mounted on the upper sealing end cover (508) via a motor mount. The separator piston (516) is located inside the cylinder (509) and divides the cylinder (509) into an upper cylinder and a lower cylinder. The upper end of the lead screw (506) is connected to the lead screw motor (507). The separator piston (516) has a bearing receiving cavity (5161) at its upper end and a lead screw receiving cavity (5162) at the bottom of the bearing receiving cavity (5161). The planar push... A thrust bearing (510) is disposed in a bearing housing cavity (5161). A bearing washer (511) is placed at the bottom of the planar thrust bearing (510). The bearing locking nut (505) is threadedly connected to the outer wall of the bearing housing cavity (5161) to fix the planar thrust bearing (510). The lower end of the lead screw (506) passes through the bearing locking nut (505) and the planar thrust bearing (510) and extends into the lead screw housing cavity (5162). The lead screw locking nut (504) is threadedly connected to the lower end of the lead screw (506). The cylinder piston YCC seal ring (513) and the cylinder magnetic ring (503) are spaced and sleeved on the separator piston (516). The cylinder piston YCC seal ring (513) has A pair of cylinder magnetic rings (503) are located between a pair of cylinder piston YCC sealing rings (513). When the cylinder magnetic ring (503) is equipped with a magnetic sensor, it is used to control the displacement of the separator piston (516). The wear-resistant ring (512) is wrapped around the cylinder magnetic ring (503). The lower sealing end cover (515) has an intake channel (5151) formed in the middle along the longitudinal direction, which is connected to the second solenoid valve (4) through a pipeline. Two air pipes (5152) extend to the left and right sides respectively. One air pipe (5152) is used for exhaust and is equipped with a separator outward one-way valve (6). The other air pipe (5152) serves as a pressure measuring port, which is connected to the separator negative pressure sensor (7) through an inward one-way valve.For measuring the pressure inside the cylinder (509), the separator piston (516) forms a piston shaft (5163) at the bottom. The piston shaft (5163) is adapted to the upper port of the air intake passage (5151) of the lower sealing end cover (515). A piston shaft sealing ring (501) is provided on the piston shaft (5163). Multiple cylinder magnetic sensors (517) are spaced apart along the height direction of the outer edge of the cylinder (509).

3. The hydraulic oil dissolved air ultravacuum separation device according to claim 1, characterized in that: The piston-type oil and gas content measuring instrument (9) includes an end cover transition plate (901), an oil-containing bushing (902), a bottom sealing end cover (903), a measuring instrument cylinder (904), a measuring instrument magnetic ring (905), a measuring instrument piston YCC sealing ring (906), a top cover sealing ring (907), a top sealing end cover (908), a sealing buffer pad (909), a measuring instrument piston (910), a piston rod (911), a pull wire sensor fixing bracket (912), a pull wire sensor (913), a connecting rod (914), and a Y-type connector (915). The top sealing end cover (908) and the bottom sealing end cover (903) are also included. The top sealing end cap (908) is located at the top and bottom of the measuring cylinder (904). Measuring oil pipes (9081) extend from the top sealing end cap (908) to the left and right sides respectively. One measuring oil pipe (9081) is connected to the third solenoid valve (12) and the first ball valve (10) via a pipeline. The other measuring oil pipe (9081) is connected to a measuring negative pressure sensor (8). The top sealing ring (907) is located on the contact surface between the top sealing end cap (908) and the top of the measuring cylinder (904). The bottom sealing end cap (903) is supported on and penetrates the end cap transition plate (901). The measuring piston... (910) is set inside the measuring instrument cylinder (904). A pair of measuring instrument piston YCC sealing rings (906) are fitted onto the measuring instrument piston (910) with an upper and lower gap. The measuring instrument magnetic ring (905) is fitted onto the measuring instrument piston (910) and located between a pair of top cap sealing rings (907). The piston rod (911) is located below the measuring instrument piston (910), and its top end is fixedly connected to the measuring instrument piston (910) by a screw. The top sealing end cap (908) has a sealing buffer pad (909) on its inner wall facing the screw. The bottom end of the piston rod (911) passes through the bottom sealing end cap (908). The oil-impregnated bushing (902) inside 903 extends downward and is connected to the Y-type connector (915). A gravity block is connected to the Y-type connector (915). The pull-wire sensor fixing bracket (912) is fixedly connected to the end cover transition plate (901). The pull-wire sensor (913) is fixed on the pull-wire sensor fixing bracket (912). The bottom end of the piston rod (911) is also connected to one end of the connecting rod (914). The other end of the connecting rod (914) is connected to the pull wire head of the pull-wire sensor (913). The pull-wire sensor (913) is used to collect displacement data of the measuring piston (910).

4. The hydraulic oil dissolved air ultravacuum separation device according to claim 1, characterized in that: It also includes a device mounting plate (18), on which the separation cylinder (1), the excitation plate assembly (2), the second pressure reducing valve (3), the second solenoid valve (4), the electric piston separator (5), the separator outward one-way valve (6), the separator negative pressure sensor (7), the measuring device negative pressure sensor (8), the piston oil and gas content measuring device (9), the first ball valve (10), the second ball valve (11), the third solenoid valve (12), the oil pump (13), the first pressure reducing valve (16), and the first solenoid valve (17) are mounted. The wire rope vibration isolator (202) is used to reduce the vibration transmitted to the device mounting plate (18).

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