Vacuum oil purification device

Abstract

The invention provides a vacuum oil purification device, and relates to the technical field of vacuum oil purification, the vacuum oil purification device comprises an oil inlet mechanism, the oil inlet mechanism is communicated with a coalescence separation type dehydration mechanism through a pipeline, the coalescence separation type dehydration mechanism is communicated with an oil outlet mechanism through a pipeline, and a drainage mechanism is connected to the coalescence separation type dehydration mechanism. According to the oil filtering device, oil liquid to be treated is conveyed into the coalescence separation type dehydration mechanism through the oil inlet mechanism to remove solid impurities and water, the oil inlet mechanism is provided with two oil outlets, oil cut-off caused by faults of a single oil port is avoided, and meanwhile the oil filtering efficiency is improved; according to the vacuum oil purification device, pollutants in the oil can be effectively filtered out, water can be effectively removed, oil cut-off caused by faults in the working process of the vacuum oil purification device can be prevented, and therefore the system reliability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum oil purification, in particular to a vacuum oil purification device. Background Art

[0002] The vacuum oil purification device is a highly efficient oil purification equipment, which is widely used in many fields such as electricity, petroleum, chemical industry, machinery, etc. It is mainly based on the difference in boiling points between water and oil. Through vacuum heating and condensation technology, the water, gas and impurities in the oil are separated to achieve the purpose of purifying the oil. The specific process includes pretreatment, vacuum heating, evaporation and condensation, oil purification and discharge of clean oil.

[0003] At present, in the actual operation of the vacuum oil purification device, the coalescence separation dehydration mechanism operates under a single oil inlet state, which makes the oil filtering efficiency low and the oil filtering time too long; secondly, the coalescence separation dehydration mechanism adopts a single oil inlet for oil supply, which cannot be timely cut off and continue to ensure the oil supply of the system after a failure occurs, causing oil leakage or oil interruption in the oil purification device, affecting the quality of the oil after oil filtration, and poor quality anti-oil will have a negative impact on the power regulation and cooling of the steam turbine, seriously threatening the normal operation of the unit; in summary, it is necessary to optimize the oil purification device to avoid failure of the oil purification device during oil filtration and improve the stability of the oil quality after oil filtration. Therefore, a vacuum oil purification device is proposed to address the above problems. Summary of the invention

[0004] The present invention provides a vacuum oil purification device to solve at least one of the problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a vacuum oil purification device, including an oil inlet mechanism, which is connected to a coalescing and separating dehydration mechanism through a pipeline, and the coalescing and separating dehydration mechanism is connected to an oil outlet mechanism through a pipeline, and a drainage mechanism is connected to the coalescing and separating dehydration mechanism.

[0006] Preferably, the oil inlet mechanism includes an oil inlet pipeline, an oil inlet valve is connected to the oil inlet of the oil inlet pipeline, and a pre-filter, an oil pump and a coarse filter are sequentially connected to the oil inlet pipeline from the oil inlet to the oil outlet, a first cut-off valve is connected to the oil inlet pipeline near the oil outlet, the oil outlet of the oil inlet pipeline is respectively connected to the first oil pipeline and the second oil pipeline, and the first oil pipeline and the second oil pipeline are respectively connected to isolation valves.

[0007] Preferably, a pressure gauge and a pressure controller are provided on the oil inlet pipeline between the oil pump and the coarse filter, and a pressure gauge is provided on the oil inlet pipeline between the first shut-off valve and the oil outlet of the oil inlet pipeline.

[0008] Preferably, the coalescence and separation dehydration mechanism includes a separator body, and an air inlet valve and an exhaust valve are respectively connected to the air inlet at the top and the air outlet at the bottom of the separator body, and a coalescence filter element and a separation filter element are respectively arranged in the separator body, the bottom of the separator body is connected to the first drain pipe, the water inlet of the first drain pipe is located between the coalescence filter element and the separation filter element, and the oil inlet of the separator body is respectively connected to the oil outlets of the first oil pipeline and the second oil pipeline.

[0009] Preferably, the oil outlet mechanism includes an oil outlet pipeline, a second cut-off valve is connected to the oil inlet of the oil outlet pipeline, a magnetic filter is connected to the oil outlet of the oil outlet pipeline, a fine filter is connected to the oil outlet pipeline between the second cut-off valve and the magnetic filter, and the oil inlet of the oil outlet pipeline is connected to the oil outlet of the separator body.

[0010] Preferably, a pressure gauge and a pressure controller are provided on the oil outlet pipeline between the second shut-off valve and the fine filter, the sewage outlet of the fine filter is connected to a sewage pipe, and the sewage pipe is connected to a sewage valve.

[0011] Preferably, the drainage mechanism includes a tank body, the water inlet of the tank body is connected to the water outlet of the first drain pipe, and a liquid level sensor is provided in the tank body, the water outlet of the tank body is connected to the oil inlet valve and the pre-filter on the oil inlet pipe through an oil return pipe, an oil return valve is provided on the oil return pipe, and the water outlet of the tank body is also connected to a second drain pipe, and a drain valve is provided on the second drain pipe.

[0012] Preferably, it also includes an oil performance testing device, which is used to test the quality of the oil after the coalescence separation dehydration mechanism treats the oil with filtrate, and the oil performance testing device includes:

[0013] Densitometer 1, used to detect the density of the oil inside the separator body;

[0014] Densitometer 2, used to detect the density of the oil at the oil inlet of the oil inlet pipeline;

[0015] Densitometer 3, used to detect the density of oil at the oil outlet of the oil pipeline;

[0016] The frequency sensor is used to detect the vibration frequency of the separator body when the oil is being processed.

[0017] A controller and an alarm, wherein the controller is electrically connected with the first density meter, the second density meter, the third density meter, the frequency sensor and the alarm.

[0018] A controller and an alarm, wherein the controller is electrically connected to the density meter 1, the density meter 2, the density meter 3, the frequency sensor and the alarm, and the controller controls the alarm to work based on the density meter 1, the density meter 2, the density meter 3 and the frequency sensor.

[0019] Preferably, the controller controls the alarm to work based on the densitometer 1, the densitometer 2, the densitometer 3 and the frequency sensor, and calculates the oil quality assessment coefficient W after the coalescence separation dehydration mechanism treats the oil with filtrate according to the formula and the detection values ​​obtained by the densitometer 1, the densitometer 2, the densitometer 3 and the frequency sensor. l The controller compares the oil quality assessment coefficient W after the oil is filtrated during the operation of the current coalescence separation dehydration mechanism. l Compared with the preset oil quality assessment coefficient range, if the oil quality assessment coefficient W after the current coalescence separation dehydration mechanism treats the oil filtrate l When the oil quality is not within the preset range, the controller controls the alarm to sound an alarm:

[0020]

[0021] Among them, W l is the oil quality assessment coefficient after the coalescing and separation dehydration mechanism treats the oil by filtrate treatment, S is the effective cross-sectional area of ​​the separator body after removing the coalescing filter element and the separation filter element, ρ l is the detection value of the density of the oil treated inside the separator body by the density meter, ρ1 is the detection value of the density of the oil at the oil inlet of the second pair of oil inlet pipelines of the density meter, λ is the viscosity of the oil in the coalescence separation dehydration mechanism, f0 is the detection value of the vibration frequency of the separator body when the oil is treated by the frequency sensor, n is the overtone number, α lf is the stress frequency coefficient inside the separator body, ρ2 is the detected value of the oil density at the outlet of the three pairs of oil outlet pipes of the densitometer, σ l It is the viscosity of the oil in the oil outlet pipeline.

[0022] The vacuum oil purification device provided by the present invention has the following beneficial effects compared with the prior art:

[0023] 1. The above-mentioned vacuum oil purification device optimizes the original oil purification device, upgrades the original vacuum separation dehydration device to a coalescence separation dehydration device, and adopts a coalescence separation dehydration mechanism to remove fixed impurities and water in the oil. Its dehydration efficiency is moderate. At the same time, the coalescence separation dehydration mechanism adopts dual oil inlets for simultaneous oil filtering and supply, which greatly shortens the oil filtering time. The equipment cost is relatively low, and it is easy to operate and maintain.

[0024] 2. In order to facilitate oil replenishment to the system, the above-mentioned vacuum oil purification device changes the single oil inlet of the original vacuum oil purification mechanism into a parallel double oil inlet, and adds an isolation valve control to prevent system oil leakage or oil interruption caused by malfunction of the single oil inlet during operation, which affects the oil filtration efficiency and oil quality, thereby improving the reliability of the device; at the same time, the oil filtration efficiency and safety of the optimized oil purification device will be greatly improved, ensuring that the fire-resistant oil can maintain high-quality operation for a long time, while reducing the cost of filter element consumption, effectively improving the stability and reliability of the vacuum oil purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a vacuum oil purification device provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the structure of the auxiliary waste liquid treatment provided in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Coalescing and separation dehydration mechanism; 2. Oil inlet pipeline; 3. Oil inlet valve; 4. Pre-filter; 5. Oil pump; 6. Coarse filter; 7. First shut-off valve; 8. First oil pipeline; 9. Second oil pipeline; 10. Isolation valve; 11. Pressure gauge; 12. Pressure controller; 13. Pressure gauge; 14. Separator body; 15. Inlet valve; 16. Exhaust valve; 17. Coalescing filter element; 18. Separation filter element; 19. First drain pipe; 20. Oil outlet pipeline; 21. Second shut-off valve; 22. Magnetic filter; 23. Fine filter; 24. Drain pipe; 25. Drain valve; 26. Tank; 27. Liquid level sensor; 28. Oil return pipeline; 29. ​​Oil return valve; 30. Second drain pipe; 31. Drain valve; 32. Auxiliary dirty liquid treatment mechanism; 33. Treatment box; 34. Partition; 35. First cavity; 36. Second cavity; 37. Electric push rod; 38. Push rod; 39. Limiting ring; 40. Fixed rod; 41. Articulated bracket; 42. First connecting rod; 43. Second connecting rod; 44. Articulated block; 45. Connecting rod; 46. Pull rod one; 47. Pull rod two; 48. Spring; 49. Filter box; 50. First filter screen; 51. Second filter screen; 52. Guide plate; 53. Vibrator; 54. Shell; 55. Drive motor; 56. First pulley; 57. Rotating shaft; 58. Second pulley; 59. Belt; 60. Mounting plate; 61. Agitating fan blade; 62. Mounting bracket; 63. Fixed bracket; 64. Adsorption rod. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention provides the following embodiments

[0032] Example 1

[0033] The embodiment of the present invention provides a vacuum oil purification device, such as Figure 1 As shown, it includes an oil inlet mechanism, which is connected to the coalescing separation dehydration mechanism 1 through a pipeline, and the coalescing separation dehydration mechanism 1 is connected to the oil outlet mechanism through a pipeline, and the drainage mechanism is connected to the coalescing separation dehydration mechanism 1.

[0034] Preferably, the oil inlet mechanism includes an oil inlet pipeline 2, an oil inlet valve 3 is connected to the oil inlet of the oil inlet pipeline 2, and a pre-filter 4, an oil pump 5 and a coarse filter 6 are sequentially connected to the oil inlet pipeline 2 from the oil inlet to the oil outlet, a first cut-off valve 7 is connected to the oil inlet pipeline 2 near the oil outlet, the oil outlet of the oil inlet pipeline 2 is respectively connected to the first oil pipeline 8 and the second oil pipeline 9, and the first oil pipeline 8 and the second oil pipeline 9 are respectively connected to isolation valves 10.

[0035] Preferably, a pressure gauge 11 and a pressure controller 12 are provided on the oil inlet pipeline 2 between the oil pump 5 and the coarse filter 6 , and a pressure gauge 13 is provided on the oil inlet pipeline 2 between the first shut-off valve 7 and the oil outlet of the oil inlet pipeline 2 .

[0036] Preferably, the coalescence and separation dehydration mechanism 1 includes a separator body 14, and the air inlet at the top and the air outlet at the bottom of the separator body 14 are respectively connected to an air intake valve 15 and an exhaust valve 16, and a coalescence filter element 17 and a separation filter element 18 are respectively arranged in the separator body 14, and the bottom of the separator body 14 is connected to a first drain pipe 19, and the water inlet of the first drain pipe 19 is located between the coalescence filter element 17 and the separation filter element 18, and the oil inlet of the separator body 14 is respectively connected to the oil outlets of the first oil pipeline 8 and the second oil pipeline 9.

[0037] Preferably, the oil outlet mechanism includes an oil outlet pipeline 20, a second cut-off valve 21 is connected to the oil inlet of the oil outlet pipeline 20, a magnetic filter 22 is connected to the oil outlet of the oil outlet pipeline 20, a fine filter 23 is connected to the oil outlet pipeline 20 between the second cut-off valve 21 and the magnetic filter 22, and the oil inlet of the oil outlet pipeline 20 is connected to the oil outlet of the separator body 14.

[0038] Preferably, a pressure gauge 11 and a pressure controller 12 are provided on the oil outlet pipeline 20 between the second shut-off valve 21 and the fine filter 23 , the sewage outlet of the fine filter 23 is connected to a sewage pipe 24 , and the sewage pipe 24 is connected to a sewage valve 25 .

[0039] Preferably, the drainage mechanism includes a tank body 26, the water inlet of the tank body 26 is connected to the water outlet of the first drain pipe 19, and a liquid level sensor 27 is arranged in the tank body 26, the water outlet of the tank body 26 is connected to the oil inlet valve 3 and the pre-filter 4 on the oil inlet pipe 2 through an oil return pipe 28, an oil return valve 29 is arranged on the oil return pipe 28, and the water outlet of the tank body 26 is also connected to a second drain pipe 30, and a drain valve 31 is arranged on the second drain pipe 30.

[0040] The working principle and beneficial effects of the above technical solution are:

[0041] The vacuum oil purification device of the present invention can effectively remove solid impurities and water in the fuel oil by setting an oil inlet mechanism, a coalescence separation dehydration mechanism 1, an oil outlet mechanism and a drainage mechanism, and can ensure that the vacuum oil purification device will not be interrupted due to a malfunction during the oil transportation process. At the same time, the oil filtering efficiency and safety of the optimized vacuum oil purification device will be greatly improved. The oil inlet mechanism in the vacuum oil purification device first opens the oil inlet valve 3, so that the oil to be treated enters through the oil inlet port of the oil inlet pipeline 2, and then the solid impurities in the oil are initially filtered out through the pre-filter 4. The filtered oil is transported to the coarse filter 6 by the oil pump 5, and the large particles of impurities in the oil are effectively filtered out through the coarse filter 6. Secondly, when passing through the oil inlet pipeline 2, the pressure gauge 11 is used to monitor the internal operating pressure and the pressure controller 12 can adjust the oil transportation pressure of the oil inlet pipeline 2 in real time. The two cooperate with each other to monitor the operating status of the oil inlet pipeline 2 to ensure the safe operation of the vacuum oil purification; then the oil passes through the oil inlet pipeline 2 The connected first oil pipeline 8 and second oil pipeline 9 enter into the coalescence separation dehydration mechanism 1, wherein the pressure gauge 13 arranged at the oil outlet of the oil inlet pipeline 2 is convenient for detecting the pressure of the oil entering into the separator body 14. At the same time, by arranging two oil ports at the oil outlet of the oil inlet pipeline 2 to transport the oil to the separator body 14, it is possible to effectively avoid the original single oil inlet from causing oil interruption in the event of a failure, and change it to a parallel double oil inlet, and add isolation valves 10 on the first oil pipeline 8 and the second oil pipeline 9 respectively for control, so that the oil delivery status of each oil inlet can be controlled separately, thereby improving the stability of the vacuum oil purification device during oil delivery.

[0042] The above-mentioned coalescence and separation dehydration mechanism 1 mainly relies on the combined action of the coalescence filter element 17 and the separation filter element 18 when working. When the oil inlet pipeline 2 transports the oil to the separator body 14, it first passes through the coalescence filter element 17, which can filter out solid impurities in the oil and coalesce tiny water droplets into larger water droplets. Since the density of water droplets is greater than that of oil, most of the coalesced water droplets can be separated from the oil by their own weight and settled in the sump; then, the oil flows through the separation filter element 18, which has good oleophilic and hydrophobic properties and can further separate residual water in the oil. Finally, clean and water-free oil flows out of the device. Secondly, ventilation inside the separator body 14 is achieved through the exhaust valve 16 and the intake valve 15, and the drainage mechanism connected to the bottom of the separator can collect the water droplets settled in the separator body 14 into the tank body 26 through the first drainage pipe 19, and the liquid level sensor 27 arranged in the tank body 26 can monitor the water level inside the tank body 26 in real time, thereby controlling the drainage valve 31 on the second drainage pipe 30 to discharge the waste water, so as to maintain the working water level state inside the coalescence separation dehydration mechanism 1.

[0043] After the coalescence separation dehydration mechanism 1 completes the oil treatment, the treated oil is discharged through the oil outlet mechanism. First, the second shut-off valve 21 located on the oil outlet pipeline 20 is in an open state. At this time, the oil passes through the fine filter 23 to further filter out fine impurities in the oil, and the waste liquid filtered by the fine filter 23 is discharged through the sewage pipe 24. The sewage valve 25 set on the sewage pipe 24 can realize the control of the discharge of the waste liquid. Then the oil is transported to the magnetic filter 22 through the oil outlet pipeline 20. The magnetic filter 22 has the ability to absorb micron-level ferromagnetic pollutants under instantaneous liquid flow impact or high flow rate, further removes impurities inside the oil, and can overcome the ferromagnetic pollutants rushed down under high speed and large impact and be re-absorbed. At the same time, compared with some traditional filters, the magnetic filter 22 usually has a simpler maintenance process, and it is relatively easy to remove or replace the magnetic components. The pressure gauge 11 and the pressure controller 12 set on the oil outlet pipeline 20 monitor the running state of the oil outlet pipeline 20 to ensure the safe operation of the vacuum oil purification device.

[0044] The above vacuum oil purification device adopts the coalescence separation dehydration method. First, it can efficiently remove water from the oil and reduce the water content of the oil; second, it can filter out tiny particles and suspended matter in the oil to improve the cleanliness of the oil; third, some high-end coalescence separation dehydration devices are equipped with an automatic control system, which can realize functions such as automatic sewage discharge and automatic water discharge; fourth, it is easy to maintain, the device has a compact structure, is easy to maintain, and reduces operating costs. At the same time, the device changes the single oil inlet of the original vacuum oil purification device into a parallel double oil inlet, and adds an isolation valve 10 control to prevent oil interruption caused by faults during operation, thereby improving the reliability of the device, and the oil filtering efficiency and safety will be greatly improved.

[0045] Example 2

[0046] On the basis of Example 1, Figure 2As shown, it also includes an auxiliary dirty liquid treatment mechanism 32, which is connected to the sewage outlet of the sewage pipe 24. The auxiliary dirty liquid treatment mechanism 32 includes a treatment box 33, and a partition 34 is fixedly installed and connected between the top and the bottom of the treatment box 33. The partition 34 divides the treatment box 33 into a first cavity 35 and a second cavity 36. The fixed end of the electric push rod 37 is fixedly installed at the bottom of the second cavity 36, and the telescopic end of the electric push rod 37 is fixedly connected to a push rod 38. The limit ring 39 is fixedly installed on the inner side wall of the second cavity 36 through a fixed rod 40, and the push rod 38 is slidably connected in the limit ring 39, and the hinge bracket 41 is rotatably connected to the top of the push rod 38 The two ends of the hinged bracket 41 are hinged with a first connecting rod 42 and a second connecting rod 43 respectively, and a pull rod 1 46 and a pull rod 2 47 are slidably connected to the partition 34 at an upper and lower interval, and one end of the first connecting rod 42 and the second connecting rod 43 are hinged to the pull rod 1 46 and the pull rod 2 47 respectively, and two hinge blocks 44 are fixedly installed at an interval on the inner wall of the first cavity 35, and connecting rods 45 are hinged on the hinge blocks 44 respectively, and one end of the two connecting rods 45 and the other end of the pull rod 1 46 and the pull rod 2 47 are fixedly connected to a filter box 49 through springs 48 respectively, and both sides of the first filter screen 50 are fixedly connected to the inner wall of the filter box 49, and a second filter screen 51 is embedded at the bottom of the filter element.

[0047] Preferably, a guide plate 52 is further included. The guide plate 52 is fixedly installed on the inner wall of the first cavity 35 at a certain angle, and a vibrator 53 is fixedly installed on the bottom of the guide plate 52.

[0048] Preferably, it also includes a shell 54, which is fixedly mounted on the bottom of the processing box 33, and a drive motor 55 is fixedly mounted on the bottom of the second cavity 36, and the output shaft of the drive motor 55 rotates through the bottom of the processing box 33 and is fixedly connected to a first pulley 56, and both ends of the rotating shaft 57 are respectively rotatably connected to the bottom of the processing box 33 and the bottom of the shell 54, and a mounting bracket 62 is fixedly mounted on the inner wall of the shell 54, and a second pulley 58, a mounting plate 60 and a plurality of stirring blades 61 are fixedly mounted on the rotating shaft 57 from top to bottom, and the second pulley 58 is connected to the first pulley 56 by a belt 59, and the side wall of the mounting plate 60 is slidably connected in the mounting bracket 62, and two fixed brackets 63 are fixedly mounted on the bottom of the mounting plate 60 symmetrically, and an adsorption rod 64 is provided on the inner wall of the fixed bracket 63.

[0049] The working principle and beneficial effects of the above technical solution are:

[0050] The auxiliary dirty liquid treatment mechanism 32 is arranged in a vacuum oil purification device. When the waste liquid filtered by the fine filter 23 is discharged through the sewage pipe 24, the sewage enters the treatment box 33. At this time, the electric push rod 37 arranged in the second cavity 36 performs telescopic movement, so that the top rod 38 fixedly installed on the telescopic end of the electric push rod 37 can move up and down. The limit ring 39 can ensure that the top rod 38 always moves up and down. At the same time, the hinged bracket 41 hinged on the top of the top rod 38 moves up and down with the top rod 38, so that the first connecting rod 42 and the second connecting rod 43 hinged on both ends of the hinged bracket 41 drive the pull rod 1 46 and the pull rod 2 47 on the partition 34. It can move leftward or rightward, and at the same time, the filter box 49 connected to the connecting rod 45, the first pull rod and the second pull rod by the spring 48 can vibrate, so that the transported sewage can be fully filtered multiple times, the first filter screen 50 can remove large particles of impurities in the sewage, and the second filter screen 51 can filter and adsorb the treated sewage, adsorb and filter out the fine particles contained in the sewage, so that the sewage is transported from the outlet at the bottom of the first cavity 35 to the shell 54; at the same time, the guide plate 52 and the vibrator 53 installed on the inner wall of the first cavity 35 can prevent the sewage from staying and adhering to the bottom of the first cavity 35, so as to ensure that the sewage after the initial treatment can smoothly enter the shell 54 for secondary treatment.

[0051] At the same time, the driving motor 55 in the second cavity 36 starts to work, so that the first pulley 56 fixedly connected to the output shaft of the driving motor 55 can rotate, and the first pulley 56 drives the second pulley 58 connected by the belt 59 to rotate synchronously. At the same time, the second pulley 58 is fixedly installed on the rotating shaft 57 so that the rotating shaft 57 can rotate, and the mounting plate 60 and a plurality of stirring blades 61 fixedly installed on the rotating shaft 57 also rotate synchronously with the rotating shaft 57. Then, a plurality of fixed brackets 63 fixedly installed at the bottom of the mounting plate 60 drive the adsorption plate to rotate, and the sewage transported to the shell 54 is rotated at a high speed under the action of the stirring blades 61, so that the impurities attached to the inside of the sewage are separated under the action of centrifugal force, and the adsorption plate on the fixed bracket 63 fully adsorbs the separated impurities and pollutant particles, so as to complete further fine filtration and impurity removal of the sewage, so that the sewage discharged from the drain port at the bottom of the shell 54 meets the discharge standard, and at the same time reduces the discharge of pollutants in the vacuum oil purification device during oil filtration, ensuring that the vacuum oil purification device is an efficient and reliable oil purification equipment.

[0052] Example 3

[0053] A vacuum oil purification device described on the basis of embodiment 1 or 2 further includes an oil performance detection device for detecting the quality of the oil after the coalescence separation dehydration mechanism 1 performs filtrate treatment on the oil, and the oil performance detection device includes:

[0054] Densitometer 1, used to detect the density of the oil inside the separator body 14;

[0055] Densitometer 2, used to detect the density of the oil at the oil inlet of the oil inlet pipeline 2;

[0056] Densitometer 3, used to detect the density of the oil at the oil outlet of the oil outlet pipeline 20;

[0057] The frequency sensor is used to detect the vibration frequency of the separator body 14 when processing oil.

[0058] A controller and an alarm, wherein the controller is electrically connected to the density meter 1, the density meter 2, the density meter 3, the frequency sensor and the alarm, and the controller controls the alarm to work based on the density meter 1, the density meter 2, the density meter 3 and the frequency sensor.

[0059] The vibration frequency detected by the frequency sensor is the vibration frequency generated by the separator body 14 itself after the separator body 14 is subjected to resonance when the separator body 14 is processing oil.

[0060] Preferably, the controller controls the alarm based on the densitometer 1, the densitometer 2, the densitometer 3 and the frequency sensor, and calculates the oil quality assessment coefficient W after the coalescence separation dehydration mechanism 1 performs filtrate treatment on the oil according to the formula and the detection values ​​obtained by the densitometer 1, the densitometer 2, the densitometer 3 and the frequency sensor. l The controller compares the oil quality evaluation coefficient W after the oil is filtrated during the operation of the current coalescence separation dehydration mechanism 1. l Compared with the preset oil quality assessment coefficient range, if the oil quality assessment coefficient W after the current coalescence separation dehydration mechanism 1 performs filtrate treatment on the oil is l When the oil quality is not within the preset range, the controller controls the alarm to sound an alarm:

[0061]

[0062] Among them, W l is the oil quality assessment coefficient after the coalescing and separating dehydration mechanism 1 treats the oil by filtrate treatment, S is the effective cross-sectional area of ​​the separator body 14 after removing the coalescing filter element 17 and the separation filter element 18, and ρ lis the detection value of the density of the oil processed inside the separator body 14 of the pair of densitometers, ρ1 is the detection value of the density of the oil at the oil inlet of the second pair of oil inlet pipes 2 of the densitometer, λ is the viscosity of the oil in the coalescence separation dehydration mechanism 1, f0 is the detection value of the vibration frequency of the separator body 14 when the oil is processed by the frequency sensor, n is the overtone number (the ratio of the vibration frequency to the fundamental frequency, usually an integer multiple), α lf is the stress frequency coefficient inside the separator body 14 (usually 1.8×10 -5 m·Hz 3 ), ρ2 is the detected value of the oil density at the outlet of the three pairs of oil outlet pipelines 20 by the densitometer, σ l is the viscosity of the oil in the oil outlet pipeline 20.

[0063] The beneficial effects of the above technical scheme are as follows: first, according to the formula and the detection values ​​of density meter 1, density meter 2, density meter 3 and frequency sensor, the oil quality assessment coefficient after the filtrate treatment of the oil by the coalescing and separating dehydration mechanism 1 is calculated, and by comprehensively considering the effective cross-sectional area after removing the coalescing filter element 17 and the separation filter element 18 in the separator body 14, the density of the oil treated inside the separator body 14 when the coalescing and separating dehydration mechanism 1 is working, the density of the oil at the oil inlet of the oil inlet pipeline 2 and the density of the oil at the oil outlet of the oil outlet pipeline 20, the viscosity of the oil in the coalescing and separating dehydration mechanism 1, the vibration frequency of the separator body 14 when the oil is treated, the stress frequency coefficient inside the separator body 14, and the viscosity of the oil in the oil outlet pipeline 20, the calculation result is more accurate and reliable.

[0064] The controller controls the operation of the densitometer 1, the densitometer 2, the densitometer 3, the frequency sensor and the alarm. When the actual coalescence separation dehydration mechanism 1 performs filtrate treatment on the oil, the oil quality evaluation coefficient W l When it is not within the preset oil quality assessment coefficient range, the controller controls the alarm to sound, thereby reminding the staff to promptly inspect the condensation separation dehydration mechanism 1 in the vacuum oil purification device, and perform maintenance on the condensation separation dehydration mechanism 1 according to the actual inspection results to maintain the smooth flow of the oil inlet pipeline 2 and the oil outlet pipeline 20, while ensuring the normal working state of the vacuum oil purification device and the quality of the oil after filtering, and effectively improving the service life of the condensation separation dehydration mechanism 1, further meeting the use requirements of the vacuum oil purification device for operational reliability and stability, and by real-time monitoring of the working state of the condensation separation dehydration mechanism 1 during operation, not only the oil filtering efficiency of the vacuum oil purification device is increased, but also the smooth flow of the oil inlet pipeline and the oil outlet pipeline is guaranteed.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vacuum oil purification device, characterized in that: It comprises an oil inlet mechanism, the oil inlet mechanism is connected to a coalescence separation dehydration mechanism (1) through a pipeline, and the coalescence separation dehydration mechanism (1) is connected to an oil outlet mechanism through a pipeline, and a drainage mechanism is connected to the coalescence separation dehydration mechanism (1).

2. A vacuum oil purification device according to claim 1, characterized in that: The oil inlet mechanism comprises an oil inlet pipeline (2), an oil inlet valve (3) is connected to the oil inlet of the oil inlet pipeline (2), and a pre-filter (4), an oil pump (5) and a coarse filter (6) are sequentially connected to the oil inlet pipeline (2) from the oil inlet to the oil outlet, a first cut-off valve (7) is connected to the oil inlet pipeline (2) near the oil outlet, the oil outlet of the oil inlet pipeline (2) is respectively connected to a first oil delivery pipeline (8) and a second oil delivery pipeline (9), and the first oil delivery pipeline (8) and the second oil delivery pipeline (9) are respectively connected to isolation valves (10).

3. A vacuum oil purification device according to claim 2, characterized in that: A pressure gauge (11) and a pressure controller (12) are provided on the oil inlet pipeline (2) between the oil pump (5) and the coarse filter (6), and a pressure gauge (13) is provided on the oil inlet pipeline (2) between the first shut-off valve (7) and the oil outlet of the oil inlet pipeline (2).

4. A vacuum oil purification device according to claim 2, characterized in that: The coalescence separation dehydration mechanism (1) comprises a separator body (14), wherein an air inlet at the top and an air outlet at the bottom of the separator body (14) are respectively connected to an air inlet valve (15) and an air outlet valve (16), a coalescence filter element (17) and a separation filter element (18) are respectively arranged in the separator body (14), the bottom of the separator body (14) is connected to a first drain pipe (19), the water inlet of the first drain pipe (19) is located between the coalescence filter element (17) and the separation filter element (18), and the oil inlet of the separator body (14) is respectively connected to the oil outlets of the first oil pipeline (8) and the second oil pipeline (9).

5. A vacuum oil purification device according to claim 1, characterized in that: The oil outlet mechanism comprises an oil outlet pipeline (20), the oil inlet of the oil outlet pipeline (20) is connected to a second cut-off valve (21), the oil outlet of the oil outlet pipeline (20) is connected to a magnetic filter (22), a fine filter (23) is connected to the oil outlet pipeline (20) between the second cut-off valve (21) and the magnetic filter (22), and the oil inlet of the oil outlet pipeline (20) is in communication with the oil outlet of the separator body (14).

6. A vacuum oil purification device according to claim 5, characterized in that: A pressure gauge (11) and a pressure controller (12) are provided on the oil outlet pipeline (20) between the second shut-off valve (21) and the fine filter (23); the sewage outlet of the fine filter (23) is connected to a sewage pipe (24); and the sewage pipe (24) is connected to a sewage valve (25).

7. A vacuum oil purification device according to claim 4, characterized in that: The drainage mechanism comprises a tank body (26), the water inlet of the tank body (26) is communicated with the water outlet of the first drainage pipe (19), and a liquid level sensor (27) is arranged in the tank body (26). The water outlet of the tank body (26) is connected to the oil inlet valve (3) and the pre-filter (4) on the oil inlet pipe (2) through an oil return pipe (28), and an oil return valve (29) is arranged on the oil return pipe (28). The water outlet of the tank body (26) is also connected to a second drainage pipe (30), and a drainage valve (31) is arranged on the second drainage pipe (30).

8. A vacuum oil purification device according to claim 4, characterized in that: It also includes an oil performance testing device, which is used to test the quality of oil products after the oil is filtrated by the coalescence separation dehydration mechanism (1), and the oil performance testing device includes: Densitometer 1, used to detect the density of the oil inside the separator body (14); Densitometer 2, used to detect the density of the oil at the oil inlet of the oil inlet pipeline (2); Densitometer 3, used to detect the density of the oil at the oil outlet of the oil outlet pipeline (20); A frequency sensor for detecting the vibration frequency of the separator body (14) when the separator body (14) is processing oil; A controller and an alarm, wherein the controller is electrically connected to the density meter 1, the density meter 2, the density meter 3, the frequency sensor and the alarm, and the controller controls the alarm to work based on the density meter 1, the density meter 2, the density meter 3 and the frequency sensor.

9. A vacuum oil purification device according to claim 8, characterized in that: The controller controls the alarm based on the densitometer 1, the densitometer 2, the densitometer 3 and the frequency sensor, including: According to the formula and the detection values ​​obtained by the density meter 1, density meter 2, density meter 3 and frequency sensor, the oil quality evaluation coefficient W after the oil is treated by the coalescence separation dehydration mechanism (1) is calculated. l The controller compares the oil quality evaluation coefficient W after the oil is filtrated during the operation of the current coalescence separation dehydration mechanism (1). l Compared with the preset oil quality assessment coefficient range, if the oil quality assessment coefficient W after the current coalescence separation dehydration mechanism (1) performs filtrate treatment on the oil is l When the oil quality is not within the preset range, the controller controls the alarm to sound an alarm: Among them, W l is the oil quality assessment coefficient after the oil is treated by the coalescing and separating dehydration mechanism (1), S is the effective cross-sectional area of ​​the separator body (14) after removing the coalescing filter element (17) and the separation filter element (18), ρ l is the density value detected by the density meter for the oil density inside the separator body (14), ρ + is the detection value of the oil density at the oil inlet of the oil inlet pipeline (2) of the second pair of densitometers, λ is the viscosity of the oil in the coalescence separation dehydration mechanism (1), f0 is the detection value of the vibration frequency of the separator body (14) when the frequency sensor is processing the oil, n is the overtone number, α lf is the stress frequency coefficient inside the separator body (14), ρ2 is the detected value of the oil density at the oil outlet of the three pairs of oil outlet pipes (20) of the densitometer, σ l is the viscosity of the oil in the oil outlet pipeline (20).

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