EH fire-resistant oil regeneration dehydration oil filter

Abstract

The invention relates to the field of fuel regeneration, dehydration and filtration, in particular to an EH fire-resistant oil regeneration, dehydration and filtration machine which comprises a base, an oil pump is fixedly mounted on the base and is in driving connection with a hydraulic loop, and the hydraulic loop is sequentially communicated with an oil inlet valve, an oil suction filter, a fine filter, a protection filter and an oil outlet valve. The electric control box is mounted on the upper side of the base; a regeneration branch and a dehydration branch are arranged between the oil absorption filter and the fine filter; a dehydration filter is mounted on the dehydration branch; according to the EH fire-resistant oil regeneration dehydration oil filter, the functions of precise filtration, deep dehydration and regeneration are integrated, comprehensive purification of EH fire-resistant oil is achieved, solid particles, moisture and acidic materials can be effectively removed, and the operation reliability and safety of a steam turbine speed regulating system are improved; meanwhile, the equipment is connected in parallel with the regeneration filter and is adjustable in flow, so that the complexity of serial use of a plurality of equipment is avoided, and the occupied area and the maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of fuel regeneration dewatering filter, and particularly relates to an EH fire-resistant fuel regeneration dewatering filter. BACKGROUND

[0002] EH fire-resistant oil is usually used as the hydraulic medium of the turbine speed regulation system, and the oil cleanliness, water content and resistivity of the oil directly relate to the safe and stable operation of the system. If solid particles, water and acidic substances exist in the oil, the servo valve will be jammed, the oil quality will be deteriorated, the system resistivity will be reduced, and equipment failure or even shutdown will be caused. When the oil quality of the fire-resistant oil is out of standard, not only is the cost high for replacing new oil, but also the oil needs to be replaced at a suitable opportunity, so the oil filter equipment is developed.

[0003] At present, there are single-function oil filter equipment in the market, such as only filtering impurities or only dewatering, which cannot simultaneously perform deep regeneration treatment on the oil to remove acidic substances and restore the resistivity. If overall purification is to be achieved, multiple devices need to be connected in series, which has the problems of complex system, large floor area, complicated operation, high energy consumption and high cost. Therefore, there is an urgent need for an integrated and highly automated oil filter that can simultaneously complete precision filtration, deep dewatering and regeneration. SUMMARY

[0004] The application aims to overcome the defects of the prior art, such as single function, low automation, high cost and inconvenience in precision filtration and deep dewatering of fire-resistant oil, and to realize an EH fire-resistant oil regeneration dewatering filter.

[0005] To achieve the above application purpose, the technical scheme of the application is as follows: an EH fire-resistant oil regeneration dewatering filter, comprising a base, an oil pump fixedly installed on the base, a hydraulic circuit drivenly connected with the oil pump, an oil inlet valve, an oil suction filter, a precision filter, a protection filter and an oil outlet valve connected in sequence with the hydraulic circuit, and an electric control box installed on the upper side of the base.

[0006] An industrial Internet gateway is integrated in the electric control box. The gateway collects hydraulic circuit data through Modbus and Profinet industrial protocols, and uploads the data to a terminal through 5G / 4G or Ethernet. A virtual model of the filter is constructed in the terminal by using a digital twin model, and the digital twin model is calibrated and optimized by using an algorithm.

[0007] A regeneration branch and a dewatering branch are installed between the oil suction filter and the precision filter.

[0008] A dewatering filter is installed on the dewatering branch.

[0009] The hydraulic circuit is equipped with an integrated detection module for detecting the cleanliness, moisture content, and insulation performance pressure value of the hydraulic fluid.

[0010] Specifically, the integrated detection module includes

[0011] Particle counter is used to monitor the cleanliness of oil in hydraulic circuits;

[0012] Micro water sensor; used to monitor the water content of oil, it is installed in the pipeline connecting the fine filter and the dehydration filter;

[0013] Resistivity sensors are used to monitor the insulation properties of hydraulic fluid in hydraulic circuits.

[0014] Differential pressure transmitters are used to monitor the clogging status of protective filters and fine filters;

[0015] The particle counter, the micro-water sensor, the resistivity sensor, and the differential pressure transmitter are all electrically connected to the electrical control box.

[0016] Specifically, the dehydration branch is associated with a vacuum module, which includes a vacuum gauge and a vacuum relay for vacuum level.

[0017] Specifically, an overflow valve is installed on one side of the oil pump, and a first pressure gauge, a pressure relay, a temperature sensor, a first check valve, and a first solenoid directional valve are installed sequentially in the hydraulic circuit between the oil pump and the regeneration branch.

[0018] Specifically, a second check valve, a second pressure gauge, and a second solenoid directional valve are sequentially installed on the hydraulic circuit between the regeneration branch and the dewatering filter, and a first throttle valve and a third pressure gauge are installed on the dewatering filter.

[0019] Specifically, the regeneration branch includes a regeneration filter A and a regeneration filter B connected in parallel, and a first flow regulating valve is provided between the oil pressure flowing through the regeneration filter A and the regeneration filter B.

[0020] Specifically, the fine filter has a filtration accuracy of 1 μm; a third check valve is installed between the dehydration filter and the fine filter.

[0021] Specifically, a sampling valve is installed between the oil outlet valve and the protective filter, a flow meter is installed between the fine filter and the micro water sensor, and an oil drain valve is installed on one side of the regeneration filter A.

[0022] Specifically, multiple evenly distributed casters are fixedly installed on the lower side of the base.

[0023] Compared with the prior art, the EH fire-resistant oil regeneration dehydration oil filter of the present invention has at least the following beneficial effects:

[0024] This invention integrates precision filtration, deep dehydration, and regeneration functions to achieve comprehensive purification of EH fire-resistant oil. The equipment employs automated control, integrating detection modules including a particle counter, micro-water sensor, resistivity sensor, and differential pressure transmitter to monitor the oil's cleanliness, moisture content, and insulation performance in real time, ensuring oil quality stability. The equipment boasts advantages such as compact system, simple operation, low energy consumption, and low cost. It effectively removes solid particles, moisture, and acidic substances, restores oil resistivity, extends the service life of fire-resistant oil, and improves the operational reliability and safety of the turbine speed control system. Through the high integration of the fine filter, dehydration filter, and regeneration branch, filtration, dehydration, and regeneration can be completed simultaneously, avoiding the complexity of using multiple devices in series, significantly reducing floor space and maintenance costs. Furthermore, the differential pressure transmitter automatically monitors filter blockage and triggers alarms, improving system reliability and maintenance efficiency. Data is uploaded to a terminal via 5G / 4G or Ethernet, where a digital twin model of the oil filter is constructed, and algorithms are used to further calibrate and optimize the digital twin model. Attached Figure Description

[0025] Figure 1 This is the front view of the present invention;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a top view of the present invention;

[0028] Figure 4 This is a schematic diagram of the hydraulic principle of the present invention;

[0029] In the diagram: 1-Electrical control box; 2-Vacuum relay; 3-Pressure relay; 4-Base; 5-First check valve; 6-Particle counter; 7-Universal wheel; 8-Protective filter; 9-Outlet valve; 10-Sampling valve; 11-Inlet valve; 12-Suction filter; 13-Flow meter; 14-Drain valve; 15-Regeneration branch; 16-Oil pump; 17-Temperature sensor; 19-Motor; 20-Regeneration filter B; 21-Second check valve; 22-Dehydration filter; 23-First throttle valve; 24-Third check valve; 25-Fine filter; 26-Differential pressure transmitter; 27-Vacuum gauge; 28-First flow regulating valve; 29-Regeneration filter A; 30-Micro water sensor; 31-Resistivity sensor;

[0030] 401 - First solenoid directional valve; 402 - Second solenoid directional valve;

[0031] 701 - First pressure gauge; 702 - Second pressure gauge; 703 - Third pressure gauge. Detailed Implementation

[0032] The EH fire-resistant oil regeneration dehydration filter of the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0034] This embodiment discloses an EH fire-resistant oil regeneration dehydration oil filter, such as... Figures 1-4 As shown, it includes a base 4, on which an oil pump 16 is fixedly installed. The oil pump 16 is driven by a hydraulic circuit. The hydraulic circuit is sequentially connected to an oil inlet valve 11, an oil suction filter 12, a fine filter 25, a protective filter 8, and an oil outlet valve 9. An electrical control box 1 is installed on the upper side of the base 4.

[0035] The protective filter 8 uses the micropores of the filter element to mechanically block particles larger than its precision, ensuring that the treated filtrate is clean; the side oil pump 16 is connected to the motor 19, which is fixedly installed on the upper side of the base 4, and drives the oil pump 16 to work; the fire-resistant oil enters the hydraulic circuit through the oil inlet connected to the oil inlet valve 11, is coarsely filtered by the oil suction filter 12, and then the oil is pressurized by the oil pump 16 and enters the hydraulic circuit.

[0036] A regeneration branch 15 and a dehydration branch are installed between the oil suction filter 12 and the fine filter 25;

[0037] A dehydration filter 22 is installed on the dehydration branch;

[0038] The hydraulic circuit is equipped with an integrated detection module for detecting the cleanliness, moisture content, and insulation performance pressure value of the hydraulic fluid.

[0039] The integrated detection module includes

[0040] Particle counter 6, used to monitor the cleanliness of oil in hydraulic circuits;

[0041] Micro-water sensor 30; used to monitor the water content of oil, it is installed at the pipeline connecting the fine filter 25 and the dehydration filter 22;

[0042] Resistivity sensor 31 is used to monitor the insulation performance of oil in hydraulic circuits;

[0043] Differential pressure transmitter 26 is used to monitor the clogging status of protective filter 8 and fine filter 25;

[0044] The particle counter 6, the micro-water sensor 30, the resistivity sensor 31, and the differential pressure transmitter 26 are all electrically connected to the electrical control box 1.

[0045] The dehydration branch is associated with a vacuum module, which includes a vacuum gauge 27 and a vacuum relay 2 for vacuum level. The oil flows to the regeneration branch 15 and the dehydration branch: the regeneration branch 15 removes acidic substances from the oil through parallel regeneration filters A and B, and adjusts the flow rate through a first flow regulating valve 28 to optimize the regeneration effect; the dehydration branch removes moisture through the dehydration filter 22 with the assistance of the vacuum module, which includes the vacuum gauge 27 and the vacuum relay 2; during the process, an integrated detection module monitors oil quality parameters in real time: a particle counter 6 monitors oil cleanliness, a micro-water sensor 30 monitors moisture content, a resistivity sensor 31 monitors insulation performance, and a differential pressure transmitter 26 monitors the clogging status of the protective filter and the fine filter.

[0046] An overflow valve is installed on one side of the oil pump 16. The hydraulic circuit between the oil pump 16 and the regeneration branch 15 is sequentially equipped with a first pressure gauge 701, a pressure relay 3, a temperature sensor 17, a first check valve 5, and a first solenoid directional valve 401.

[0047] The hydraulic circuit between the regeneration branch 15 and the dewatering filter 22 is sequentially equipped with a second check valve 21, a second pressure gauge 702, and a second solenoid directional valve 402. The dewatering filter 22 is equipped with a first throttle valve 23 and a third pressure gauge 703.

[0048] The regeneration branch 15 includes a regeneration filter A29 and a regeneration filter B20 arranged in parallel, and a first flow regulating valve 28 is provided between the oil pressure flowing through the regeneration filter A29 and the regeneration filter B20.

[0049] The fine filter 25 has a filtration accuracy of 1μm. A third check valve 24 is installed between the dehydration filter 22 and the fine filter 25 to ensure that after deep dehydration and regeneration, the oil is further filtered to remove fine particles through high-precision filtration. At the same time, the third check valve prevents oil backflow, ensuring process unidirectionality and system stability. Through the high integration of the fine filter 25, the dehydration filter 22, and the regeneration branch 15, filtration, dehydration, and regeneration can be completed simultaneously, avoiding the complexity of using multiple devices in series, significantly reducing the floor space and maintenance costs. In addition, the differential pressure transmitter 26 automatically monitors the filter blockage status and alarms, improving system reliability and maintenance efficiency. Both the dehydration filter 22 and the fine filter 25 are equipped with filter elements.

[0050] The electrical control box 1 integrates an industrial IoT gateway. The gateway collects hydraulic circuit data through Modbus and Profinet industrial protocols and uploads the data to the terminal via 5G / 4G or Ethernet. At the terminal, a virtual model of the oil filter is built using a digital twin model, and algorithms are used to further calibrate and optimize the digital twin model for decision-making.

[0051] This terminal can be a web-based interface, used to display real-time data, early warning information, and remotely control the start and stop of equipment;

[0052] The algorithm includes the following:

[0053] Filter element pressure difference dynamic model formula

[0054]

[0055] Where ΔP(t) is the pressure difference at time t; α is the Darcy resistance coefficient related to the filter element structure; μ(T(t)) is the dynamic viscosity of the oil at temperature T(t); Q(t) is the volumetric flow rate at time t; A is the filter area; β(t) is the filter element permeability at time t; γ is the local resistance coefficient related to the filter element structure and turbulence effect; ρ is the oil density; the decay of β(t) directly reflects the health status and degree of clogging of the filter element, and is a key state indicator for achieving predictive maintenance.

[0056] Remaining useful life prediction formula

[0057]

[0058] Among them, t failure From β(t) failure) =β(t failure) =βt hreshold Determined; RUL(t) is the remaining useful life t failure t represents the predicted failure time. current βt represents the current time. hreshold The failure threshold for transparency is used; the future trajectory of β(t) is predicted using time series prediction algorithms (such as LSTM), thereby accurately calculating tf. ailure .

[0059] System total power model formula

[0060]

[0061] Where Ptotal(t) is the total system power; k is the oil power coefficient; Q(t) is the volumetric flow rate; ΔPsystem(t) is the total system pressure difference; η pump For pump efficiency; η motor P represents the motor efficiency. heater(t) represents the heater power; this formula describes the power consumption characteristics of the EH fire-resistant oil regeneration dehydration filter. The total system power consists of two parts: hydraulic drive power and heating power. The first term, hydraulic drive power, reflects the energy consumption required to overcome system resistance, while the second term, heating power, is used to maintain the working temperature of the oil. The hydraulic power component represents the electrical energy consumed in transporting the oil, which depends on the flow rate, system pressure drop, and the efficiency of the pump and motor. The heating power component represents the electrical energy consumed to maintain the oil temperature. This formula allows for the evaluation of the system's energy efficiency and serves as part of the optimization objective function, enabling the reduction of total power consumption by adjusting operating parameters (such as flow rate).

[0062] Multi-objective optimization function formula

[0063]

[0064]

[0065] Where J is the objective function (total cost); t f To optimize the termination time; dt is the infinitesimal time interval in the integration operation; Ptotal(t) is the total system power; w1 and w2 are weighting coefficients; C target For target oil quality; C out (t) represents the quality of exported oil products; C max This refers to the upper limit of oil quality; Q min Q max For the minimum and maximum flow rates; T min ,T max For the minimum and maximum temperatures; the goal is to meet the oil quality (C) requirements. out ≤ C max Under the premise of ensuring the safe operation range of the equipment, find an optimal control strategy that minimizes the weighted sum of the deviations of energy consumption and oil quality from the target.

[0066] Recycling Demand Index Formula

[0067]

[0068] Where RI(t) is the regeneration demand index; k1 and k2 are proportionality coefficients; R(t) is the real-time resistivity; R new RI(t) represents the resistivity of the new oil; ΔAcidity(τ) represents the estimated acid value increment; Q(τ) represents the flow rate. This index combines the current decline in the insulation performance of the oil with the historical cumulative amount of contaminants treated, providing a quantitative and adaptive indicator for judging the saturation state of the filter element in the regeneration branch and the activation strategy of the regeneration branch. When RI(t) exceeds the preset threshold, the system can trigger an alarm or automatically adjust the regeneration process.

[0069] A sampling valve 10 is installed between the oil outlet valve 9 and the protective filter 8. The sampling valve 10 is used to sample and test the oil quality. A flow meter 13 is installed between the fine filter 25 and the micro water sensor 30. An oil drain valve 14 is installed on one side of the regeneration filter A29. The oil drain valve 14 is used to discharge residual oil.

[0070] Multiple evenly distributed casters 7 are fixedly installed on the lower side of the base 4, which facilitates moving the equipment to the designated working position. The casters 7 have the feature of self-braking.

[0071] In use, the device is first moved to the designated working position by the casters on the underside of the base, and the inlet valve 11 and outlet valve 9 are connected to the EH fire-resistant oil system to be processed. The power is turned on, and the device is started through the electrical control box 1. The oil pump 16 starts working under the drive of the motor 19. The fire-resistant oil enters the hydraulic circuit from the inlet valve 11, is coarsely filtered by the suction filter 12, and is then pressurized by the oil pump 16 to enter the subsequent process. The oil is then diverted to the regeneration branch 15 and the dehydration branch: the regeneration branch 15 removes acidic substances from the oil through the parallel regeneration filters A and B, and the flow rate is adjusted by the first flow regulating valve 28 to optimize the regeneration effect; the dehydration branch removes moisture through the dehydration filter 22 with the assistance of the vacuum module, including the vacuum gauge 27 and the vacuum relay 2. During the processing, the integrated detection module monitors the oil quality parameters in real time: the particle counter 6 monitors the cleanliness of the oil, the micro-water sensor 30 monitors the moisture content, the resistivity sensor 31 monitors the insulation performance, and the differential pressure transmitter 26 monitors the clogging status of the protective filter and the fine filter.

[0072] The oil is then filtered precisely through a fine filter 25 with a filtration accuracy of 1μm, and finally returned to the system through a protective filter 8 and an oil outlet valve 9. During operation, the oil quality can be sampled and tested through a sampling valve 10. After use, the equipment power is turned off, the oil circuit connection is disconnected, and the residual oil is discharged through an oil drain valve 14. This equipment is highly integrated, easy to operate, and can efficiently complete the regeneration, dehydration, and filtration of fire-resistant oil.

[0073] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of the invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0074] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0075] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. An EH fire resistant oil regenerative dewatering filter, characterized by: The base (4) is fixedly installed with an oil pump (16), the oil pump (16) is drivingly connected with a hydraulic circuit, the hydraulic circuit is sequentially communicated with an oil inlet valve (11), an oil suction filter (12), a fine filter (25), a protection filter (8) and an oil outlet valve (9), and the base (4) is installed with an electric control box (1) on the upper side. The electric control box (1) is integrated with an industrial internet gateway, the gateway collects hydraulic circuit data through Modbus and Profinet industrial protocols, and uploads the data to a terminal through 5G / 4G or Ethernet, a virtual model of the oil purifier is constructed by using a digital twin model in the terminal, and the digital twin model is calibrated and optimized by using an algorithm. A regeneration branch (15) and a dehydration branch are installed between the oil suction filter (12) and the fine filter (25). A dehydration filter (22) is installed on the dehydration branch. An integrated detection module is arranged on the hydraulic circuit, which is used for detecting the cleanliness, moisture content and insulation performance pressure value of the oil in the hydraulic circuit.

2. The EH anti-burn oil regenerative dewatering filter of claim 1, wherein: The integrated detection module comprises A particle counter (6) for monitoring the cleanliness of the oil in the hydraulic circuit; A micro water sensor (30) for monitoring the moisture content of the oil, which is arranged at the position of the pipeline connected between the fine filter (25) and the dehydration filter (22); A resistivity sensor (31) for monitoring the insulation performance of the oil in the hydraulic circuit; A differential pressure transmitter (26) for monitoring the blockage state of the protection filter (8) and the fine filter (25); The particle counter (6), the micro water sensor (30), the resistivity sensor (31) and the differential pressure transmitter (26) are electrically connected with the electric control box (1).

3. The EH anti-burn oil regenerative dewatering filter of claim 1, wherein: The dehydration branch is associated with a vacuum module, and the vacuum module comprises a vacuum gauge (27) and a vacuum relay (2) for vacuum degree.

4. The EH anti-burn oil regenerative dewatering filter of claim 2, wherein: An overflow valve is installed on one side of the oil pump (16), and the hydraulic circuit between the oil pump (16) and the regeneration branch (15) is sequentially installed with a first pressure gauge (701), a pressure relay (3), a temperature sensor (17), a first check valve (5) and a first electromagnetic directional valve (401).

5. The EH anti-burn oil regenerative dewatering filter of claim 4, wherein: A second check valve (21), a second pressure gauge (702) and a second electromagnetic directional valve (402) are sequentially installed on the hydraulic circuit between the regeneration branch (15) and the dehydration filter (22), and a first throttle valve (23) and a third pressure gauge (703) are installed on the dehydration filter (22).

6. The EH anti-burn oil regenerative dewatering filter of claim 5, wherein: The regeneration branch (15) comprises a regeneration filter A (29) and a regeneration filter B (20) arranged in parallel, and a first flow regulating valve (28) is arranged between the oil pressure of the regeneration filter A (29) and the regeneration filter B (20).

7. The EH anti-burn oil regenerative dewatering filter of claim 6, wherein: The filtration precision of the fine filter (25) is 1μm, and a third check valve (24) is installed between the dehydration filter (22) and the fine filter (25).

8. The EH anti-burn oil regenerative dewatering filter of claim 7, wherein: A sampling valve (10) is installed between the oil outlet valve (9) and the protection filter (8), a flow meter (13) is installed between the fine filter (25) and the micro water sensor (30), and an oil discharge valve (14) is installed on one side of the regeneration filter A (29).

9. The EH anti-burn oil regenerative dewatering filter of claim 1 wherein: A plurality of universal wheels (7) are fixedly arranged on the lower side of the base (4).

Images