Acid value sensing device for online monitoring of EH fire-resistant oil
By introducing a multi-sensor and filter tank device into the EH fire-resistant oil system, online monitoring and automatic filtration and purification of EH fire-resistant oil are realized, solving the problem of equipment instability caused by changes in the acid value of EH fire-resistant oil, and improving the operational reliability and safety of the equipment.
Patent Information
- Application Number
- CN202423213061.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing technologies are insufficient to effectively monitor and address changes in acid value in EH fire-resistant oil, leading to oil deterioration and impacting equipment operational stability and safety.
Design a device that includes an EH fire-resistant oil tank, an online oil monitoring tank, a cleanliness sensor, an acid value sensor, a moisture and oil temperature sensor, a dielectric, viscosity and temperature sensor, and a filter tank. The device monitors the oil status online through multiple sensors and automatically filters and purifies the oil when the cleanliness level is low.
It enables online monitoring of EH fire-resistant oil, timely detection of system anomalies, avoidance of waste, improvement of oil cleanliness and quality, extension of equipment service life, and ensure safe operation.
Smart Images
Figure CN223500443U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of oil detection technology, and in particular to an acid value sensing device for online monitoring of EH fire-resistant oil. Background Technology
[0002] 80% of hidden dangers in mechanical equipment stem from lubrication and wear failures, which are the main causes of failure in large equipment. The unit's oil is the "blood" of mechanical equipment, flowing throughout its entire lifecycle. It plays a vital role in sealing, lubrication, friction reduction, cooling, cleaning, vibration damping, and corrosion prevention. EH fire-resistant oil is composed of phosphate esters, is transparent and uniform in appearance, has a higher viscosity than lubricating oil, and exhibits good anti-wear properties, stability, and physical stability.
[0003] The oil is like blood in the human body, and its various physicochemical characteristics can reflect the operating status of various components of the unit. For example, the trend of trace wear metal content can reflect the wear status of equipment (bearings); whether the cleanliness meets the standard, whether it absorbs dissolved water, and whether oxidation is accelerated directly affect the working accuracy of the fire-resistant oil system and whether an emergency shutdown will occur.
[0004] The main reason for the deterioration of EH fire-resistant oil is water in the oil. Water in the oil destroys the continuity and strength of the oil film, reduces the kinematic viscosity of the oil, deteriorates the lubrication performance, changes the dynamic and static characteristics of the bearing, and can cause the oil to produce acidic substances that corrode the components and generate iron oxide particles, which aggravates wear and metal shedding. In response to this, this application proposes an acid value sensing device for online monitoring of EH fire-resistant oil. Utility Model Content
[0005] To address the aforementioned issues, this application provides an acid value sensing device for online monitoring of EH fire-resistant oil.
[0006] The acid value sensing device for online monitoring of EH fire-resistant oil provided in this application adopts the following technical solution:
[0007] An acid value sensing device for online monitoring of EH fire-resistant oil includes an EH fire-resistant oil tank and an online oil monitoring tank located on one side of the EH fire-resistant oil tank for online oil monitoring. A guide pipe connecting the online oil monitoring tank is fixedly connected to the bottom of the EH fire-resistant oil tank via a three-way valve. A cleanliness sensor and an acid value sensor are fixedly installed at the bottom inside the online oil monitoring tank. A moisture, oil temperature, dielectric, viscosity, and temperature sensor are fixedly installed at the top inside the online oil monitoring tank. A return pipe for returning the monitored oil to the EH fire-resistant oil tank is fixedly provided at the top inside the online oil monitoring tank. The return pipe is connected to the EH fire-resistant oil tank via a three-way valve. A filter tank is provided on one side of the online oil monitoring tank for filtering the returned oil when the oil cleanliness is low. An automatic slag discharge mechanism is provided at the bottom of the filter tank.
[0008] By adopting the above technical solution and setting up multiple sensors in the online oil monitoring tank, the cleanliness, acid value, moisture and viscosity of the oil can be monitored online. This allows maintenance engineers to detect abnormalities in the operation of the fire-fighting oil system in a timely manner without having to be on-site. When the cleanliness of the oil is low, it can be discharged into the filter tank through the oil inlet pipe for filtration and purification, thereby improving the cleanliness and quality of the oil.
[0009] Preferably, one end of the three-way valve of the return pipe is fixedly connected to the oil inlet pipe that connects to the filter tank. A motor is fixedly installed at the center of the top of the filter tank. A rotating rod that is rotatably connected inside the filter tank is fixedly installed at the bottom of the motor output end. A filter cylinder that fits and abuts against the top of the inner side of the filter tank is fixedly installed on the outer wall of the rotating rod. The top of the oil inlet pipe is fixedly installed at the top of the inner wall of the filter tank. The top of the oil inlet pipe communicates with the inside of the filter cylinder.
[0010] By adopting the above technical solution, the rotating rod and filter cylinder can be driven by a motor to rotate. The rotated filter cylinder will discharge the oil inside through the filter holes under centrifugal force, thereby filtering and purifying the oil. At the same time, after the rotating rod rotates forward, it drives the rotating spiral blades to lift the oil entering the top of the slag discharge pipe, so that the oil cannot enter the bottom of the slag discharge pipe.
[0011] Preferably, the automatic slag discharge mechanism includes a slag discharge pipe fixedly installed at the bottom of the inner wall of the filter tank and rotatably connected to the center of the bottom end of the filter cylinder, and a spiral blade fixedly installed on the outer wall of the bottom end of the rotating rod and adapted to the inner wall of the top end of the slag discharge pipe. An electric valve is fixedly installed on the inner wall of the bottom end of the slag discharge pipe, and a guide bar that abuts against the bottom of the inner wall of the filter cylinder is fixedly installed on one side of the top of the slag discharge pipe.
[0012] By adopting the above technical solution, the reverse rotation of the rotating rod will cause the spiral blades to discharge the impurities flowing down after the oil in the filter cartridge into the bottom of the slag discharge pipe for accumulation, thus avoiding the accumulation of impurities in the filter cartridge and reducing the filtration effect.
[0013] Preferably, an oil pump is fixedly installed at the bottom of the inner wall of the filter tank, and an oil outlet pipe for connecting to a three-way valve of the return pipe is fixedly installed at the output end of the oil pump.
[0014] By adopting the above technical solution, after the oil pump is running, it can discharge the filtered oil in the filter tank back to the EH fire-resistant oil tank through the three-way valve of the oil outlet pipe and return pipe, thereby continuously filtering and purifying the oil.
[0015] In summary, this application includes at least one of the following beneficial technical effects:
[0016] 1. By setting up multiple sensors in the online oil monitoring tank, the cleanliness, acid value, moisture and viscosity of the oil can be monitored online. This allows maintenance engineers to detect abnormalities in the operation of the fire-fighting oil system in a timely manner without having to go to the site. The oil after testing can be returned to the EH fire-fighting oil tank through the return pipe, which will not cause waste. When the cleanliness of the tested oil is low, it can be discharged into the filter tank through the oil inlet pipe for filtration and purification to improve the cleanliness and quality of the oil.
[0017] 2. Driven by a motor, the rotating rod and filter cartridge rotate. Under centrifugal force, the rotating filter cartridge discharges the oil through the filter holes, thus filtration and purification. At the same time, the clockwise rotation of the rotating rod drives the rotating spiral blades to lift the oil entering the top of the slag discharge pipe, preventing the oil from entering the bottom of the slag discharge pipe. The counterclockwise rotation of the rotating rod causes the spiral blades to discharge the impurities flowing down from the filtered oil in the filter cartridge into the bottom of the slag discharge pipe for accumulation, preventing impurities from accumulating in the filter cartridge and reducing the filtration effect. It is convenient and practical. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of an acid value sensing device for online monitoring of EH fire-resistant oil according to an embodiment of this application;
[0019] Figure 2 This is a schematic diagram illustrating the internal structure of the online oil monitoring box, which is the main embodiment of this application.
[0020] Figure 3 This is a schematic diagram illustrating the internal structure of the filter tank, which is the main feature of this application.
[0021] Figure 4 This is a schematic diagram illustrating another perspective of the filter tank, which is the main embodiment of this application.
[0022] Figure 5 This is a top view showing the connection of the filter cartridge, slag discharge pipe and guide bar, which are the main components of this application embodiment.
[0023] Figure reference numerals: 1. EH fire-resistant oil tank; 11. Guide pipe; 2. Online oil monitoring tank; 21. Return pipe; 22. Cleanliness sensor; 23. Acid value sensor; 24. Moisture and oil temperature sensor; 25. Dielectric, viscosity, and temperature sensor; 3. Filter tank; 31. Oil inlet pipe; 32. Oil pump; 33. Oil outlet pipe; 4. Motor; 41. Rotating rod; 42. Filter cartridge; 43. Slag discharge pipe; 44. Spiral blade; 45. Guide bar. Detailed Implementation
[0024] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0025] This application discloses an acid value sensing device for online monitoring of EH fire-resistant oil.
[0026] An acid value sensing device for online monitoring of EH fire-resistant oil, referring to Figure 1 It includes an EH fire-resistant oil tank 1 and an online oil monitoring tank 2. The EH fire-resistant oil tank 1 is used to store EH fire-resistant oil, and the online oil monitoring tank 2 is located on one side of the EH fire-resistant oil tank 1 and is used for online monitoring of the oil.
[0027] Reference Figure 1-2 The bottom side of the EH fire-resistant oil tank 1 is fixedly connected to a guide pipe 11 that connects to the online oil monitoring box 2 via a three-way valve. A cleanliness sensor 22 and an acid value sensor 23 are fixedly installed on the bottom inside the online oil monitoring box 2. The oil in the EH fire-resistant oil tank 1 can flow into the online oil monitoring box 2 through the guide pipe 11 for testing. The cleanliness sensor 22 can test the cleanliness of the oil. In the oil system of industrial power mechanisms, EH fire-resistant oil inevitably contains various impurities, mainly from mechanical impurities that remain in the oil system even after cleaning, such as scale, casting sand, iron filings, paint flakes, and cotton yarn. By testing the cleanliness, the normal use of the oil can be guaranteed. The acid value sensor 23 can detect the acid value in the oil. By detecting the content of acidic substances in the oil, it helps to judge the aging and contamination of the oil.
[0028] Reference Figure 1-2 The top of the inner side of the online oil monitoring box 2 is fixedly installed with moisture and oil temperature detection sensors 24, as well as dielectric, viscosity and temperature detection sensors 25. The moisture and oil temperature detection sensors 24 include a moisture sensor for detecting the moisture in the oil and an oil temperature sensor for detecting the oil temperature. Changes in oil temperature will affect the performance indicators of the oil. Temperature detection is of great significance for ensuring the normal and stable operation of the system, extending the service life of the system and components, ensuring equipment safety and preventing accidents.
[0029] The dielectric, viscosity, and temperature detection sensor 25 includes a dielectric sensor, a viscosity sensor, and a temperature sensor. The temperature sensor can further detect the oil temperature, improving the accuracy of temperature detection. The dielectric sensor can detect the dielectric constant of the EH fire-resistant oil, which is an indicator reflecting the overall quality of the oil. The viscosity sensor can detect the viscosity of the oil, which is an important alarm indicator of oil deterioration. When oil is contaminated by other oils or impurities, the viscosity will decrease or increase. The cleanliness detection sensor 22, acid value sensor 23, moisture and oil temperature detection sensor 24, and dielectric, viscosity, and temperature detection sensor 25 are all connected to an external control platform via wires or wireless modules, allowing maintenance engineers to detect abnormalities in the fire-resistant oil system without being physically present on-site. All of these sensors are common devices, and their internal circuit connections and specific principles have been disclosed, so they will not be elaborated further here.
[0030] Reference Figure 1-2 The top inner side of the online oil monitoring box 2 is fixed with a return pipe 21 for sending the tested oil back to the EH fire-resistant oil tank 1. The return pipe 21 is connected to the EH fire-resistant oil tank 1 through a three-way valve. The tested oil can flow back to the EH fire-resistant oil tank 1 through the return pipe 21, without causing waste.
[0031] Reference Figure 1-3 On one side of the online oil monitoring box 2, there is a filter tank 3 for filtering the return oil when the oil cleanliness is low. One end of the three-way valve of the return pipe 21 is fixedly connected to the oil inlet pipe 31 that connects to the filter tank 3. If the cleanliness of the EH fire-resistant oil is low after testing, the tested oil can be discharged into the filter tank 3 through the oil inlet pipe 31 via the three-way valve of the return pipe 21 for filtration and purification.
[0032] Reference Figure 1 , Figure 3 and Figure 4 A motor 4 is fixedly installed at the center of the top of the filter tank 3. A rotating rod 41 is fixedly installed at the bottom of the output end of the motor 4 and is rotatably connected inside the filter tank 3. A filter cylinder 42 is fixedly installed on the outer wall of the rotating rod 41 and fits against the top of the inner side of the filter tank 3. The top end of the oil inlet pipe 31 is fixedly installed on the top of the inner wall of the filter tank 3. The top end of the oil inlet pipe 31 is connected to the inside of the filter cylinder 42. The motor 4 can rotate forward and reverse. This is a public technology and will not be described in detail here. A connecting rod is fixed between the outer wall of the rotating rod 41 and the inner wall of the filter cylinder 42.
[0033] Oil with low cleanliness can flow into the filter cartridge 42 through the oil inlet pipe 31. After the motor 4 is running, it will drive the filter cartridge 42 to rotate through the rotating rod 41. After rotation, the filter cartridge 42 will discharge the oil inside through the filter holes under centrifugal force. The filtered oil will flow to the bottom of the inner side of the filter tank 3, while the impurities in the oil will remain in the filter cartridge 42, thereby filtering and purifying the oil.
[0034] Reference Figure 1 , Figure 3 and Figure 5 The bottom of the filter tank 3 is equipped with an automatic slag discharge mechanism. The automatic slag discharge mechanism includes a slag discharge pipe 43 fixedly installed at the bottom of the inner wall of the filter tank 3 and rotatably connected to the center of the bottom end of the filter cylinder 42, and a spiral blade 44 fixedly installed on the outer wall of the bottom end of the rotating rod 41 and adapted to the inner wall of the top end of the slag discharge pipe 43. An electric valve is fixedly installed on the inner wall of the bottom end of the slag discharge pipe 43. A guide bar 45 is fixedly installed on one side of the top of the slag discharge pipe 43 and fits against the bottom of the inner wall of the filter cylinder 42. The filter tank 3 can support and fix the slag discharge pipe 43. After the electric valve is opened and closed, it can control the unobstructed or closed bottom end of the slag discharge pipe 43. When the bottom end of the slag discharge pipe 43 is closed, a temporary storage space for impurities will be formed.
[0035] When oil filtration is required, the motor 4 rotates forward to drive the rotating rod 41, filter cylinder 42, and spiral blade 44 to rotate forward. At this time, the spiral blade 44, after rotating forward, can lift the EH fire-resistant oil with higher viscosity flowing into the top of the slag discharge pipe 43 into the filter cylinder 42, so that the oil cannot enter the bottom of the slag discharge pipe 43. After the oil filtration is completed, the motor 4 can be reversed to drive the rotating rod 41 and spiral blade 44 and other components to rotate in reverse, so that the spiral blade 44 can discharge the impurities flowing down after the oil filtration in the filter cylinder 42 into the bottom of the slag discharge pipe 43 for accumulation, so as to avoid the accumulation of impurities in the filter cylinder 42 and reduce the filtration effect. The fixed guide bar 45 can guide the impurities at the bottom of the filter cylinder 42 when the filter cylinder 42 rotates, so that the impurities can enter the slag discharge pipe 43. By controlling the electric valve to keep the bottom of the slag discharge pipe 43 unobstructed, the impurities accumulated at the bottom of the slag discharge pipe 43 can be discharged.
[0036] Reference Figure 1-3 An oil pump 32 is fixedly installed at the bottom of the inner wall of the filter tank 3. An oil outlet pipe 33 is fixedly installed at the output end of the oil pump 32 for connecting to the three-way valve of the return pipe 21. After the oil pump 32 is running, it can discharge the filtered oil in the filter tank 3 back to the EH fire-resistant oil tank 1 through the oil outlet pipe 33 and the three-way valve of the return pipe 21, thereby continuously filtering and purifying the oil.
[0037] The implementation principle of an acid value sensing device for online monitoring of EH fire-resistant oil according to an embodiment of this application is as follows:
[0038] During use, the oil in the EH fire-resistant oil tank 1 can flow into the online oil monitoring tank 2 through the guide pipe 11 for testing. The cleanliness sensor 22 and other sensors in the online oil monitoring tank 2 can detect the cleanliness, acid value, moisture and viscosity of the oil, so that maintenance engineers can detect abnormalities in the operation of the fire-resistant oil system in a timely manner without having to go to the site. Moreover, the tested oil can flow back to the EH fire-resistant oil tank 1 through the return pipe 21, so as not to cause waste.
[0039] When the cleanliness of the EH fire-resistant oil is low after testing, the tested oil can be discharged into the filter cartridge 42 of the filter tank 3 through the three-way valve of the return pipe 21 via the oil inlet pipe 31. After the motor 4 is running, it will drive the filter cartridge 42 to rotate through the rotating rod 41. The rotated filter cartridge 42 will discharge the oil inside through the filter holes under centrifugal force. The filtered oil will flow to the bottom of the inner side of the filter tank 3, while the impurities in the oil will remain in the filter cartridge 42, thereby filtering and purifying the oil.
[0040] When oil filtration is required, the motor 4 rotates forward to drive the rotating rod 41, filter cartridge 42 and spiral blade 44 to rotate forward. At this time, the spiral blade 44 after rotating forward can lift the EH fire-resistant oil with high viscosity flowing into the top of the slag discharge pipe 43 into the filter cartridge 42, so that the oil cannot enter the bottom of the slag discharge pipe 43. After the oil filtration is completed, the motor 4 can be reversed to drive the rotating rod 41 and spiral blade 44 and other components to reverse, so that the spiral blade 44 can discharge the impurities flowing down after the oil filtration in the filter cartridge 42 into the bottom of the slag discharge pipe 43 for accumulation, so as to avoid the accumulation of impurities in the filter cartridge 42 and reduce the filtration effect.
[0041] After the oil pump 32 is running, it can discharge the filtered oil in the filter tank 3 back to the EH fire-resistant oil tank 1 through the three-way valve of the oil outlet pipe 33 and the return pipe 21, thereby continuously filtering and purifying the oil.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An acid value sensing device for online monitoring of EH fire-resistant oil, comprising an EH fire-resistant oil tank (1) and an online oil monitoring tank (2) disposed on one side of the EH fire-resistant oil tank (1) for online monitoring of the oil, characterized in that: The bottom side of the EH fire-resistant oil tank (1) is fixedly connected to a guide pipe (11) that connects to the online oil monitoring tank (2) via a three-way valve. The bottom of the online oil monitoring tank (2) is fixedly installed with a cleanliness sensor (22) and an acid value sensor (23). The top of the online oil monitoring tank (2) is fixedly installed with a moisture and oil temperature sensor (24) and a dielectric, viscosity and temperature sensor (25). The top of the online oil monitoring tank (2) is fixedly provided with a return pipe (21) for sending the tested oil back to the EH fire-resistant oil tank (1). The return pipe (21) is connected to the EH fire-resistant oil tank (1) via a three-way valve. The side of the online oil monitoring tank (2) is provided with a filter tank (3) for filtering the returned oil when the oil cleanliness is low. The bottom of the filter tank (3) is provided with an automatic slag discharge mechanism.
2. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 1, characterized in that: One end of the three-way valve of the return pipe (21) is fixedly connected to the oil inlet pipe (31) that connects to the filter tank (3).
3. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 2, characterized in that: A motor (4) is fixedly installed at the center of the top of the filter tank (3), and a rotating rod (41) is fixedly installed at the bottom of the output end of the motor (4) and is rotatably connected inside the filter tank (3).
4. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 3, characterized in that: The outer wall of the rotating rod (41) is fixed with a filter cylinder (42) that abuts against the top of the inner side of the filter tank (3).
5. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 4, characterized in that: The top end of the oil inlet pipe (31) is fixedly installed on the top of the inner wall of the filter tank (3), and the top end of the oil inlet pipe (31) is connected to the inside of the filter cylinder (42).
6. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 5, characterized in that: The automatic slag discharge mechanism includes a slag discharge pipe (43) fixedly installed at the bottom of the inner wall of the filter tank (3) and rotatably connected to the center of the bottom end of the filter cylinder (42), and a spiral blade (44) fixedly installed on the outer wall of the bottom end of the rotating rod (41) and adapted to the inner wall of the top end of the slag discharge pipe (43).
7. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 6, characterized in that: An electric valve is fixedly installed on the inner wall of the bottom end of the slag discharge pipe (43), and a guide bar (45) is fixedly provided on one side of the top of the slag discharge pipe (43) to cooperate with and abut against the bottom of the inner wall of the filter cylinder (42).
8. The acid value sensing device for online monitoring of EH fire-resistant oil according to claim 7, characterized in that: The bottom of the inner wall of the filter tank (3) is fixedly provided with an oil pump (32), and the output end of the oil pump (32) is fixedly provided with an oil outlet pipe (33) for connecting the three-way valve of the return pipe (21).