Vacuum oil purifier

Abstract

The utility model provides a vacuum oil purifier which comprises a vacuum tank, an oil inlet branch connected to an inlet of the vacuum tank, and an oil discharge branch connected to the bottom of the vacuum tank. A spraying assembly is arranged in the vacuum tank, an outlet of the oil inlet branch is connected to the spraying assembly, and the spraying assembly is used for spraying out hydraulic oil in a mist shape. A dehydration branch is arranged at the top of the vacuum tank; and a vacuum pump is arranged on the dehydration branch. The oil discharge branch is provided with a first branch and a second branch which are connected in parallel, and a third branch connected to the outlet ends of the first branch and the second branch. A communication branch is arranged between the first branch and the second branch, and filters are arranged on the first branch, the second branch and the third branch respectively. The first branch, the second branch and the communicating branch are each provided with a first control valve used for connecting and disconnecting the branch. Different filters are communicated through switching of series connection and parallel connection so as to realize graded filtration, efficient filtration can be completed without a plurality of devices, and the failure loss of the devices is reduced.

Description

Technical Field

[0001] This utility model relates to the field of phosphate ester fire-resistant oil filtration technology for power plants, and in particular to a vacuum oil purifier. Background Technology

[0002] The main function of phosphate ester fire-resistant oil in power plants is as hydraulic oil used in the speed control system of steam turbines to meet the needs of high-parameter generator sets and prevent fire accidents caused by high-pressure oil leakage. Phosphate ester fire-resistant oil has flame retardancy, physical stability and chemical stability.

[0003] Currently, the main sources of contamination in phosphate ester fire-resistant oils are acid value, sludge / varnish film, moisture, volume resistivity, and microparticles. While the oil is generally weakly alkaline, it becomes acidic after prolonged use and oxidation. Mechanical equipment cannot operate with oxidized acidic oils for extended periods. Firstly, it will corrode the inner walls of the equipment, increasing its fragility. Secondly, the impurities formed during the initial acidification process will reduce the oil's lubricating properties, slowing down the machine's operation.

[0004] Furthermore, in high-temperature, high-pressure, and high-speed rotating lubrication and hydraulic systems, colloids, gel-like fouling, and colloidal elastic oxides commonly appear, forming a complex oxide similar to paraffin wax, gel, tar, carbon deposits, asphalt, and paint. Due to the chemical composition characteristics of phosphate ester anti-fire hydraulic oils, their poor viscosity-temperature properties and hydrolytic stability make them prone to hydrolysis, which intensifies with increasing temperature. The strong acids produced by hydrolysis catalyze the corrosion of copper-containing and copper alloy components in the servo system. The corrosion products also act as oxidants, further accelerating the chain reaction, leading to rust, jamming, and reduced sensitivity in components such as servo valves in the speed control system. This can even cause the speed control device to fail to operate, ultimately resulting in overspeed accidents.

[0005] Furthermore, the smaller the microparticles in phosphate ester fire-resistant oil, the higher their hardness. These particles cause erosion and wear on the internal components of the servo valve under high-speed impact, which is one of the root causes of servo valve failure. Low volume resistivity servo valve media can lead to problems such as leakage current, dielectric breakdown, temperature sensitivity, media loss, static electricity accumulation, and electromagnetic interference, thus affecting the stability, reliability, response speed, and accuracy of the servo valve. High volume resistivity media, on the other hand, can reduce these risks and ensure long-term stable operation of the servo valve. Traditional vacuum oil purifiers have relatively limited functions. In implementing simultaneous dehydration, deacidification, sludge removal, and particle removal, online oil monitoring requires multiple devices. Utility Model Content

[0006] In view of this, the present invention aims to provide a vacuum oil purifier that can achieve efficient filtration without the need for multiple devices, thereby reducing equipment failure losses.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] A vacuum oil purifier includes a vacuum tank, an oil inlet branch connected to the inlet of the vacuum tank, and an oil outlet branch connected to the bottom of the vacuum tank.

[0009] The vacuum tank is equipped with a spray assembly, and the outlet of the oil inlet branch is connected to the spray assembly. The spray assembly is used to spray hydraulic oil in a mist form.

[0010] The top of the vacuum tank is equipped with a dehydration branch, and a vacuum pump is installed on the dehydration branch.

[0011] The oil drain branch is provided with a first branch and a second branch connected in parallel, and a third branch connected to the outlet ends of the first branch and the second branch;

[0012] A connecting branch is provided between the first branch and the second branch, and filters are respectively provided on the first branch, the second branch and the third branch;

[0013] The first branch, the second branch, and the connecting branch are each provided with a first control valve for switching the branch on and off.

[0014] Furthermore, the inner cavity of the vacuum tank is formed from top to bottom into a spray zone, an evaporation zone, and an oil storage zone;

[0015] The spray assembly is located in the spray zone, the evaporation zone is equipped with a demister, and the oil storage zone is equipped with a level transmitter.

[0016] Furthermore, the vacuum tank is also provided with a gas replenishment branch, which includes a first one-way valve, a flow regulating valve, an air filter, and a solenoid valve arranged in sequence; the other end of the gas replenishment branch is connected to the degassing branch.

[0017] The first one-way valve is connected to the vacuum tank and is used to connect the external atmosphere to the vacuum tank;

[0018] The solenoid valve is used to control the on / off state of the gas supply branch.

[0019] Furthermore, a fourth branch is provided at the inlet end of the first branch and the second branch, and the fourth branch is connected to the outlet of the vacuum tank;

[0020] The fourth branch is equipped with an oil discharge pump for discharging oil, and a second check valve is provided between the oil discharge pump and the first and second branches.

[0021] The second check valve is used to prevent the hydraulic oil in the fourth branch from flowing back.

[0022] Furthermore, each of the filters is equipped with a pressure transmitter at both the outlet and inlet ends.

[0023] Furthermore, a pre-filter is provided on the oil inlet branch, and a heater is also provided between the pre-filter and the spray assembly;

[0024] A temperature transmitter is provided at the outlet end of the heater;

[0025] An inlet transmitter is provided between the pre-filter and the heater, and an outlet transmitter is provided at the top of the vacuum tank.

[0026] Furthermore, an oil mist separator is also provided on the dehydration branch, and the oil mist separator is located between the vacuum pump and the vacuum tank.

[0027] Furthermore, all of the filters described herein have the same filter element interface specifications.

[0028] Furthermore, the vacuum oil purifier also includes a control system, a monitoring system, and an alarm system;

[0029] The monitoring system and the alarm system are electrically connected to the control system.

[0030] The monitoring system is used to monitor the operating status of the system in real time, and the alarm system issues an alarm signal in a timely manner when an abnormal situation occurs in the system.

[0031] Furthermore, the monitoring system includes online oil contamination monitoring, online water saturation monitoring, online pressure monitoring, online liquid level monitoring, online oil temperature monitoring, online vacuum monitoring, online foam monitoring, online oil leakage monitoring, online metal abrasive particle monitoring, and online viscosity monitoring.

[0032] Compared with the prior art, this utility model has the following advantages:

[0033] The vacuum oil purifier of this utility model, by setting a dehydration branch on the vacuum tank, when the spraying assembly sprays hydraulic oil into the vacuum tank, the vacuum pump on the dehydration branch draws a vacuum, so that the water in the hydraulic oil in the tank evaporates due to the lower boiling point. The evaporated water vapor is removed by vacuuming, thereby achieving oil-water separation. The oil is sprayed into the vacuum tank in a mist, which further increases the interface area between the gas and liquid phases, which is conducive to the rapid vaporization of water.

[0034] Meanwhile, by setting up a first branch, a second branch, and a third branch on the oil drain branch, each branch is equipped with a filter. The first branch and the second branch are connected in parallel, and the third branch is connected in series at the outlet ends of the first and second branches. By opening and closing the first control valve on each branch, different filter elements are set in different filters. Different filters can be connected by switching between series and parallel to achieve graded filtration. For different application requirements, such as simply excessive acid value, excessive sludge, excessive sludge and acid value, or simply reduced dielectric loss and excessive cleanliness, different filter element combination schemes are implemented to achieve efficient control and reduce equipment failure losses.

[0035] In addition, by setting up a gas replenishment branch, the boiling points of oil and water are made close due to excessive vacuum, thus avoiding the formation of foam. The gas replenishment branch is used to adjust the vacuum level inside the tank to achieve better evaporation effect. Automatic adjustment is achieved through the control of a solenoid valve, thereby improving the performance of the vacuum oil purifier.

[0036] Furthermore, by installing pressure transmitters at the outlet and inlet of each filter, it is possible to easily monitor the pressure difference before and after each filter when combined with different filter element schemes, avoiding damage to critical components, reducing the failure rate, and extending the service life of the vacuum oil purifier. Additionally, by installing a pre-filter on the oil inlet branch, large particulate impurities and moisture in the fuel are filtered out first, protecting the filter from clogging and ensuring the normal operation of the vacuum oil purifier system.

[0037] Furthermore, by setting the filter element interface specifications of each filter to be the same, filter elements installed on different branches can be replaced at will, making it convenient to choose the parallel or series connection method of filter element filtration. The parallel connection method can reduce the hydraulic oil flow rate, increase the reaction time between the oil and the effective components in the filter element, thereby improving the filtration effect. Attached Figure Description

[0038] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0039] Figure 1 This is a three-dimensional structural diagram of the vacuum oil purifier described in an embodiment of the present utility model;

[0040] Figure 2 This is a first-view perspective three-dimensional structural diagram of the vacuum oil purifier described in this embodiment of the utility model, excluding the panel and bracket.

[0041] Figure 3 This is a top view of the vacuum oil purifier described in this embodiment of the utility model, excluding the panel, bracket, and base.

[0042] Figure 4 This is a flowchart illustrating the working process of the vacuum oil purifier described in this embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Vacuum tank; 2. Oil inlet branch; 3. Oil outlet branch; 4. Spray assembly; 5. Dehydration branch; 6. Vacuum pump; 7. First filter element; 8. Second filter element; 9. Third filter element; 10. First pressure sensor; 11. Second pressure sensor; 12. Oil leak switch; 13. Third pressure sensor; 14. Fourth pressure sensor; 15. First ball valve; 16. Second ball valve; 17. Third ball valve; 18. Demister; 19. Level transmitter; 20. Air supply branch; 21. Oil outlet pump; 22. Second check valve; 23. Pre-filter; 24. Heater; 25. Temperature transmitter; 26. Inlet transmitter; 27. Outlet transmitter; 28. Oil mist separator; 29. ​​Base; 30. Wheels; 31. Bracket; 32. Circulation branch; 33. Self-circulating ball valve;

[0045] 101. Spraying area; 102. Evaporation area; 103. Oil storage area;

[0046] 301, First Branch Road; 302, Second Branch Road; 303, Third Branch Road; 304, Connecting Branch Road; 305, Fourth Branch Road;

[0047] 2001, First check valve; 2002, Flow regulating valve; 2003, Air filter element; 2004, Solenoid valve. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0051] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] This embodiment relates to a vacuum oil purifier, such as... Figures 1 to 4 As shown, the vacuum oil purifier includes a vacuum tank 1, an oil inlet branch 2 connected to the inlet of the vacuum tank 1, and an oil outlet branch 3 connected to the bottom of the vacuum tank 1. A spray assembly 4 is installed inside the vacuum tank 1, and the outlet of the oil inlet branch 2 is connected to the spray assembly 4. The spray assembly 4 is used to spray hydraulic oil in a mist form.

[0053] The vacuum tank 1 has a dehydration branch 5 at its top, and a vacuum pump 6 is installed on the dehydration branch 5. The oil discharge branch 3 has a first branch 301 and a second branch 302 connected in parallel, and a third branch 303 connected to the outlets of the first branch 301 and the second branch 302. A connecting branch 304 is provided between the first branch 301 and the second branch 302. Filters are installed on the first branch 301, the second branch 302, and the third branch 303. First control valves for opening and closing the branches are installed on the first branch 301, the second branch 302, and the connecting branch 304.

[0054] Overall, the vacuum oil purifier in this embodiment, by setting a dehydration branch 5 on the vacuum tank 1, when the spray assembly 4 sprays hydraulic oil into the vacuum tank 1, the vacuum pump 6 on the dehydration branch 5 draws a vacuum, so that the water in the hydraulic oil in the tank evaporates due to the lower boiling point. The evaporated water vapor is removed by the vacuum extraction, thereby realizing oil-water separation. The oil is sprayed into the vacuum tank 1 in a mist, which further increases the gas-liquid two-phase interface area and is conducive to the rapid vaporization of water.

[0055] Meanwhile, by setting a first branch 301, a second branch 302, and a third branch 303 on the oil drain branch 3, each branch is equipped with a filter. The first branch 301 and the second branch 302 are connected in parallel, and the third branch 303 is connected in series at the outlet ends of the first branch 301 and the second branch 302. By switching the first control valve on different branches, different filter elements are set in different filters. Different filters can be connected by switching between series and parallel to achieve graded filtration. For different application requirements such as simply exceeding the acid value standard, exceeding the sludge standard, exceeding the acid value standard for both sludge and acid value, simply reducing the dielectric loss and exceeding the cleanliness standard, different filter element combination schemes are implemented to achieve efficient control and reduce equipment failure losses.

[0056] Based on the above overall description, an exemplary structure of the vacuum oil purifier in this embodiment is as follows: Figures 1 to 3 As shown, the vacuum oil purifier also includes a base 29 and a bracket 31 located above the base 29. The vacuum tubes, filters, and various branch circuits are all mounted on the bracket 31 above the base 29. A panel for protecting the components is provided on the outside of the bracket 31. Furthermore, to facilitate the movement of the vacuum oil purifier, casters 30 are provided on the base 29 to increase the flexibility of the area where the oil purifier is used.

[0057] As a preferred embodiment, such as Figure 4 As shown, the inner cavity of the vacuum tank 1 is formed from top to bottom into a spray zone 101, an evaporation zone 102, and an oil storage zone 103. A spray assembly 4 is located in the spray zone 101, a demister 18 is located in the evaporation zone 102, and a level transmitter 19 is located in the oil storage zone 103. The spray assembly 4 includes a spray pipe connected to the oil inlet branch 2, and several nozzles mounted on the spray pipe; these nozzles are atomizing nozzles.

[0058] As described above, the phosphate ester fire-resistant oil to be filtered is sprayed in a mist form into the vacuum tank 1 through the spray assembly 4, forming an evaporation zone 102 in the middle of the vacuum tank 1. In the evaporation zone 102, water vapor and oil are separated. The oil storage zone 103 below the evaporation zone 102 is used to hold the dehydrated oil. Furthermore, as... Figure 4 As shown, a tray is provided on the base 29. The tray is located below the vacuum tank 1 and each pipeline and filter, and is used to catch the oil when the oil purifier leaks.

[0059] In addition, an oil leak switch 12 is installed on the tray to monitor for oil leaks. A liquid level transmitter 19 is also installed in the vacuum tank 1. By monitoring changes in the liquid level and the combined action of the oil leak sensor, it is possible to monitor whether the oil purifier is leaking oil in real time. Oil leaks not only lead to oil waste, but may also cause environmental pollution and safety risks.

[0060] In addition, a demister 18 is provided in the evaporation zone 102 of the vacuum tank 1. The demister 18 is a wire mesh demister 18 used in the prior art. It separates the oil from the formation of bubbles in the hydraulic oil caused by excessive vacuum, so that the oil droplets are intercepted when the gas passes through, and the gas continues to pass through, so as to ensure the purity of the gas and reduce the mixing of gas and oil, which causes grease to be discharged with the gas.

[0061] Furthermore, such as Figure 4 As shown, the vacuum tank 1 is also equipped with a gas supply branch 20, which includes a first one-way valve 2001, a flow regulating valve 2002, an air filter element 2003, and a solenoid valve 2004 arranged in sequence. The first one-way valve 2001 is connected to the vacuum tank 1 and is used to fill the vacuum tank 1 with atmospheric air. The solenoid valve 2004 is used to control the opening and closing of the gas supply branch 20.

[0062] Specifically, such as Figure 4 As shown, the air replenishment branch 20 is connected to the oil inlet branch 2. When the vacuum is too high and air replenishment is needed, the vacuum pump 6 is turned off, and the solenoid valve 2004 is opened to connect the air replenishment branch 20 with the partial degassing branch. External atmosphere passes through the air filter element 2003.

[0063] Still Figure 4 For ease of explanation, the air supply branches 20 on both sides of the air filter element 2003 are divided into a first air supply line and a second air supply line. Since the vacuum tank 1 is under negative pressure, the external atmosphere enters the first air supply line through the air filter element 2003, and then enters the vacuum tank 1 through the solenoid valve 2004 and the oil separator described below. The preferred diameter of the first air supply line is DN40, which is used to quickly supply air to the vacuum tank 1.

[0064] For example Figure 4 As shown, after the external atmosphere enters the second air replenishment pipeline, it passes through the flow regulating valve 2002 and then flows through the first check valve 2001 into the vacuum tank 1 for air replenishment. The diameter of the second air replenishment pipeline is preferably DN16. The flow regulating valve 2002 is adjusted to make a slight adjustment to the vacuum degree in the vacuum tank 1, which can better ensure the degassing effect of the hydraulic oil.

[0065] Preferably, combined with Figures 1 to 4 As shown, a fourth branch 305 is provided at the inlet end of the first branch 301 and the second branch 302, and the fourth branch 305 is connected to the outlet of the vacuum tank 1. The fourth branch 305 is equipped with an oil discharge pump 21 for discharging oil, and a second check valve 22 is located between the oil discharge pump 21 and the first branch 301 and the second branch 302. The second check valve 22 is used to prevent the backflow of hydraulic oil in the fourth branch 305.

[0066] In a preferred embodiment, each filter is equipped with a pressure transmitter at both its outlet and inlet. By installing pressure transmitters at the outlet and inlet of each filter, it is possible to easily monitor the pressure difference across each filter when combined with the different filter element combinations described above. The pressure transmitters can also send signals when the high-precision oil filter element becomes clogged, thus preventing damage to critical components, reducing the failure rate, and extending the service life of the vacuum oil purifier.

[0067] In addition, such as Figures 1 to 4 As shown, a pre-filter 23 is installed on the oil inlet branch 2, and a heater 24 is also installed between the pre-filter 23 and the spray assembly 4. A temperature transmitter 25 is installed at the outlet end of the heater 24, an inlet transmitter 26 is installed between the pre-filter 23 and the heater 24, and an outlet transmitter 27 is installed at the top of the vacuum tank 1. By installing a pre-filter 23 on the oil inlet branch 2, large particulate impurities and moisture in the fuel are filtered out first, protecting the filter from clogging and ensuring the normal operation of the vacuum oil purifier system.

[0068] Furthermore, a heater 24 is installed at the front end of the vacuum tank 1. By heating the hydraulic oil, its viscosity can be reduced, its fluidity enhanced, and the spray assembly 4 can atomize and spray the hydraulic oil. In addition, it can also accelerate the evaporation of water in the oil and improve the dehydration effect.

[0069] Preferably, such as Figures 1 to 4 As shown, an oil mist separator 28 is also provided on the dehydration branch 5, and the oil mist separator 28 is located between the vacuum pump 6 and the vacuum tank 1. By setting up the oil mist separator 28, some of the oil mixed in the gas can be intercepted and discharged, reducing exhaust pollution.

[0070] Furthermore, the filter element interfaces of each filter are identical. In this embodiment, by setting the filter element interface specifications of each filter to be identical, filter elements installed on different branches can be replaced at will, facilitating the selection of parallel or series connection methods for filter element filtration. The parallel connection method can reduce the hydraulic oil flow rate, increase the reaction time between the oil and the effective components in the filter element, thereby improving the filtration effect.

[0071] In addition, a circulation branch 32 is provided between the oil inlet branch 2 and the oil outlet branch 3. The circulation branch 32 is equipped with a self-circulating ball valve 33 to separate the vacuum oil purifier from the main oil circuit, which facilitates the maintenance and use of the oil purifier.

[0072] In addition, the vacuum oil purifier in this embodiment also includes a control system, a monitoring system, and an alarm system. The monitoring system and alarm system are electrically connected to the control system. The monitoring system is used to monitor the system's operating status in real time, and the alarm system promptly issues an alarm signal when an abnormal situation occurs. The control system employs existing technologies such as a PLC control system. The control system receives signals from the monitoring system, makes judgments, and issues an alarm signal for any abnormal situation. The bracket 31 also includes a human-machine interface display screen, control buttons, control electrical components, and instruments. The control buttons are used for switching between automatic and manual modes.

[0073] Specifically, the monitoring system includes online oil contamination monitoring, online water saturation monitoring, online pressure monitoring, online liquid level monitoring, online oil temperature monitoring, online vacuum monitoring, online foam monitoring, online oil leakage monitoring, online metal abrasive monitoring, and online viscosity monitoring.

[0074] Online oil contamination monitoring: Used for online real-time monitoring of particulate contamination in hydraulic system oil circuits; it allows real-time observation of oil contamination levels, setting of particle size exceedance thresholds, and the control system to issue alarms for abnormal conditions based on monitoring results. Historical particle size curves can be retrieved at any time, which helps on-site engineers analyze changes in oil particle size.

[0075] Online water saturation monitoring: The water saturation of oil can be observed in real time. Thresholds for exceeding water saturation limits can be set. The control system will alarm for abnormal situations based on the monitoring results. Historical water saturation curves can be retrieved at any time, which helps on-site engineers analyze changes in oil moisture content.

[0076] Online pressure / differential pressure monitoring: The vacuum oil purifier has an overpressure safety protection function to avoid damage to important components, and also has a system pressure display function.

[0077] Online liquid level monitoring: The vacuum oil purifier monitors the liquid level through a liquid level transmission to achieve high liquid level alarm, effectively ensuring the safety and efficiency of equipment operation.

[0078] Online oil temperature monitoring: Gradual heating to avoid overheating. The heater 24 adopts graded control. As the temperature approaches the set value, the number of heaters 24 decreases to avoid damage to the oil quality caused by overheating. The vacuum oil purifier has a temperature display function to display the current oil temperature in real time, ensuring that the equipment operates within a suitable temperature range.

[0079] Online vacuum monitoring: Online vacuum level is a crucial parameter for the operation of a vacuum oil purifier. An online vacuum monitoring system can monitor changes in the internal vacuum level of the equipment in real time, ensuring that the vacuum level is maintained within a suitable range to guarantee the oil purification effect.

[0080] Online foam monitoring: During vacuum dehydration, lubricating oil easily generates a large amount of foam, and excessive foam will reduce dehydration efficiency. When the amount of foam exceeds the preset threshold, the system will automatically activate the solenoid valve 2004 to adjust the vacuum level in vacuum tank 1 to effectively eliminate foam and ensure the efficient operation of the dehydration process.

[0081] Online oil leak monitoring: An online oil leak monitoring system can monitor equipment for oil leaks in real time. Oil leaks not only waste oil but can also cause environmental pollution and safety risks. The monitoring system uses sensors to detect leaks, and once a leak occurs, the system will immediately sound an alarm for timely handling.

[0082] Automatic online flow regulation: The equipment is equipped with a PID proportional regulating valve, which adjusts the oil inlet flow by receiving signals from the PID controller. This regulation helps to maintain stable oil flow in the equipment, optimize lubrication, and can also automatically adjust according to changes in equipment load to achieve energy saving and high efficiency.

[0083] Online Metal Abrasive Monitoring (Optional): The online lubricant abrasive monitoring box can detect the quantity, size, and frequency of metal particles in the lubrication system, and determine the properties of the metal particles (ferromagnetic or non-ferromagnetic). By timely capturing and analyzing metal particles in the lubrication system, it provides reliable early warning and life prediction for mechanical equipment.

[0084] Online viscosity monitoring (optional): The viscosity of lubricating oil changes with temperature and operating conditions, affecting lubrication performance. Online viscosity monitoring allows for real-time monitoring of oil viscosity changes, ensuring optimal lubrication performance in equipment. The system automatically alarms when the viscosity exceeds the set range to maintain oil viscosity stability.

[0085] The vacuum oil purifier in this embodiment is used as follows:

[0086] For oils that have undergone use, the quality indicators may have changed, such as: excessive acid value, excessive sludge, excessive sludge and acid value, reduced dielectric loss, and excessive cleanliness. Different filter element combination schemes are used to achieve efficient control and ensure long-term reliable operation of the equipment.

[0087] For ease of explanation, the filter on the first branch 301 is named the first filter element 7, the filter on the second branch 302 is named the second filter element 8, and the filter on the third branch 303 is named the third filter element 9. The pressure transmitter includes a first pressure sensor 10, a second pressure sensor 11, a third pressure sensor 13, and a fourth pressure sensor 14. The first control valve includes a first ball valve 15, a second ball valve 16, and a third ball valve 17 respectively located on the first branch 301, the second branch 302, and the connecting branch 304.

[0088] The main functions of the filter in this embodiment are dehydration, deacidification, removing oil sludge, and removing particles. The dry ion exchange resin filter element can remove acidic substances. Among them, the deacidification filter element can be used for deacidification and removing oil sludge; the precision filter element can filter out particulate impurities in the oil; the oil sludge removal filter element can deeply filter oil sludge and is used when the oil sludge exceeds the standard.

[0089] First, for the case where only the acid value exceeds the standard (the water content is controlled within 500 ppm, the cleanliness is controlled within NAS 8 level and within MPC 10, and the acid value is greater than 0.15 mg KOH / g). Among them, a deacidification filter is set in the first filter element 7, a dry ion regeneration filter element is set in the second filter element 8, and a precision filter element is set in the third filter element 9. The first ball valve 15 is closed, the second ball valve 16 is opened, and the third ball valve 17 is closed. The three filter elements are used in series, which can effectively reduce the acid value of the oil product and improve the quality of the oil product.

[0090] Secondly, for the case where the oil sludge exceeds the standard (the water content is controlled within 500 ppm, the cleanliness is controlled within NAS 8 level, the acid value is less than 0.15 mg KOH / g, and 10 < MPC value < 1). Among them, a deacidification filter element is set in the first filter element 7, an oil sludge removal filter element is set in the butterfly filter element, and a precision filter element is set in the third filter element 9. The first ball valve 15 is closed, the second ball valve 16 is opened, and the third ball valve 17 is closed. The three filter elements are used in series to achieve the purpose of multi-layer filtering of oil sludge.

[0091] In addition, for the case where both the oil sludge and the acid value exceed the standard (the water content is controlled within 500 ppm, the cleanliness is controlled within NAS 8 level, 0.15 < acid value < 0.25 mg KOH / g, and 10 < MPC value < 12): The first ball valve 15 is opened, the second ball valve 16 is closed, and the third ball valve 17 is opened. This method has the following partial filtering process:

[0092] The first process is to set deacidification filter elements in both the first filter element 7 and the second filter element 8 in parallel, and set a precision filter element in the third filter element 9 in series;

[0093] The second process is to replace the filter elements, set oil sludge removal filter elements in both the first filter element 7 and the second filter element 8 in parallel, and set a precision filter element in the third filter element 9 in series, and use it in multiple cycles. The combined method of series and parallel is used to remove dirt particles, acid, moisture and other impurities therein to extend the service life of the oil product.

[0094] In addition, for the case where only the dielectric loss is reduced and the cleanliness exceeds the standard: A deacidification filter element is set in the first filter element 7, a precision filter element is set in the second filter element 8, and precision filter elements are set in series in the third filter element 9. The first ball valve 15 is closed, the second ball valve 16 is opened, and the third ball valve 17 is closed. The three filter elements are used in series, which can effectively reduce the acid value of the oil product and improve the quality of the oil product.

[0095] In all four operating conditions described above, the dehydration branch 5 and the water replenishment branch must be kept running continuously.

[0096] The vacuum oil purifier in this embodiment achieves graded filtration by switching between different filters in series and parallel, thus reducing equipment failure losses by eliminating the need for multiple devices to complete efficient filtration.

[0097] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum oil purifier, characterized in that: It includes a vacuum tank (1), an oil inlet branch (2) connected to the inlet of the vacuum tank (1), and an oil outlet branch (3) connected to the bottom of the vacuum tank (1); The vacuum tank (1) is equipped with a spray assembly (4), and the outlet of the oil inlet branch (2) is connected to the spray assembly (4). The spray assembly (4) is used to spray hydraulic oil in a mist. The vacuum tank (1) is provided with a dehydration branch (5) at the top, and a vacuum pump (6) is provided on the dehydration branch (5); The oil drain branch (3) is provided with a first branch (301) and a second branch (302) connected in parallel, and a third branch (303) connected to the outlet ends of the first branch (301) and the second branch (302); A connecting branch (304) is provided between the first branch (301) and the second branch (302), and filters are respectively provided on the first branch (301), the second branch (302) and the third branch (303); The first branch (301), the second branch (302) and the connecting branch (304) are respectively provided with a first control valve for switching the branch on and off.

2. The vacuum oil purifier according to claim 1, characterized in that: The inner cavity of the vacuum tank (1) is formed from top to bottom as a spray zone (101), an evaporation zone (102), and an oil storage zone (103); The spray assembly (4) is located in the spray zone (101), the evaporation zone (102) is equipped with a demister (18), and the oil storage zone (103) is equipped with a level transmitter (19).

3. The vacuum oil purifier according to claim 2, characterized in that: The vacuum tank (1) is also provided with a gas supply branch (20), which includes a first one-way valve (2001), a flow regulating valve (2002), an air filter (2003), and a solenoid valve (2004) arranged in sequence; the other end of the gas supply branch (20) is connected to the degassing branch; The first one-way valve (2001) is connected to the vacuum tank (1) and is used to connect the external atmosphere with the vacuum tank (1); The solenoid valve (2004) is used to control the opening and closing of the air supply branch (20).

4. The vacuum oil purifier according to claim 3, characterized in that: The first branch (301) and the second branch (302) are provided with a fourth branch (305) at their inlet ends, and the fourth branch (305) is connected to the outlet of the vacuum tank (1); The fourth branch (305) is provided with an oil discharge pump (21) for discharging oil, and a second check valve (22) provided between the oil discharge pump (21) and the first branch (301) and the second branch (302); The second check valve (22) is used to prevent the hydraulic oil from flowing back into the fourth branch (305).

5. The vacuum oil purifier according to claim 3, characterized in that: Each of the filters is equipped with a pressure transmitter at both the outlet and inlet ends.

6. The vacuum oil purifier according to claim 1, characterized in that: A pre-filter (23) is provided on the oil inlet branch (2), and a heater (24) is also provided between the pre-filter (23) and the spray assembly (4); The outlet end of the heater (24) is equipped with a temperature transmitter (25); An inlet transmitter (26) is provided between the pre-filter (23) and the heater (24), and an outlet transmitter (27) is provided at the top of the vacuum tank (1).

7. The vacuum oil purifier according to claim 1, characterized in that: The dehydration branch (5) is also equipped with an oil mist separator (28), which is located between the vacuum pump (6) and the vacuum tank (1).

8. The vacuum oil purifier according to claim 1, characterized in that: All the filters described have the same filter element interface specifications.

9. The vacuum oil purifier according to claim 1, characterized in that: The vacuum oil purifier also includes a control system, a monitoring system, and an alarm system; The monitoring system and the alarm system are electrically connected to the control system. The monitoring system is used to monitor the operating status of the system in real time, and the alarm system issues an alarm signal in a timely manner when an abnormal situation occurs in the system.

10. The vacuum oil purifier according to claim 9, characterized in that: The monitoring system includes online oil contamination monitoring, online water saturation monitoring, online pressure monitoring, online liquid level monitoring, online oil temperature monitoring, online vacuum monitoring, online foam monitoring, online oil leakage monitoring, online metal abrasive monitoring, and online viscosity monitoring.

Images