Safety on-line early warning device for turbine oil system of power plant

Abstract

The safety online early warning device for the turbine oil system of the power plant comprises an oil tank, a detection assembly and a cleaning assembly, turbine oil is stored in the oil tank, the detection assembly comprises a plurality of detection pieces, the detection pieces are arranged in the oil tank and arranged at intervals in the length direction of the oil tank, and the cleaning assembly is arranged in the oil tank. The multiple detection pieces are used for detecting the quality and the liquid level of turbine oil in the oil tank, the cleaning assembly comprises an installation piece and multiple cleaning rings, the installation piece is arranged in the oil tank and extends in the length direction of the oil tank, the installation piece can move in the vertical direction relative to the oil tank, and the multiple cleaning rings are all arranged on the installation piece and can rotate in the vertical direction relative to the installation piece; and the plurality of cleaning rings sleeve the detection piece in a one-to-one correspondence manner, so that the cleaning rings can clean dirt on the detection piece. The power plant turbine oil system safety online early warning device has the advantages of being high in detection efficiency, low in cost and the like.

Description

Technical Field

[0001] This invention relates to the field of hydropower technology, and in particular to an online early warning device for the safety of turbine oil systems in power plants. Background Technology

[0002] Turbine oil, also known as turbine oil, is mainly used to lubricate the sliding bearings, reduction gears, and governors of steam turbine generator sets and hydro turbine generator sets, as well as serving as the working medium for hydraulic systems.

[0003] In related technologies, safety personnel often install insertion sensors in turbine oil tanks to detect indicators such as turbine oil viscosity, fluid characteristics, particle size, and moisture content. While this can detect the quality of turbine oil in real time and provide real-time warnings, when the particle size inside the turbine oil does not meet the standards, particulate matter and other contaminants in the turbine oil can easily adhere to the probes of the insertion sensors. This can hinder the detection by the insertion sensors and increase the probability of false alarms from the online warning device. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an online early warning device for the safety of power plant turbine oil systems that can clean sensors and has high detection accuracy.

[0006] An online safety early warning device for a power plant turbine oil system according to an embodiment of the present invention includes: an oil tank storing turbine oil; a detection component including multiple detection elements disposed within the oil tank and spaced apart along the length of the oil tank, the multiple detection elements being used to detect the mass and level of the turbine oil in the oil tank; and a cleaning component including a mounting component and multiple cleaning rings, the mounting component being disposed within the oil tank and extending along the length of the oil tank, the mounting component being movable relative to the oil tank in a vertical direction, the multiple cleaning rings being disposed on the mounting component and rotatable relative to the mounting component in a vertical direction, the multiple cleaning rings being correspondingly fitted onto the detection elements so that the cleaning rings clean the dirt on the detection elements.

[0007] The online early warning device for turbine oil system safety in power plants according to this invention includes a cleaning component that can clean oil stains on the detection component, keeping the surface of the detection end of the component clean. This solves the problem that existing online early warning devices for turbine oil system safety in large hydropower plants are prone to dirt adhesion, which reduces the detection accuracy of the online early warning device.

[0008] In some embodiments, the cleaning assembly further includes: a power source disposed on the oil tank; a threaded rod extending in a vertical direction and connected to the power source so that the power source drives the threaded rod to rotate; and a threaded hole penetrating the mounting member in a vertical direction so that the threaded rod rotates to move the mounting member in a vertical direction.

[0009] In some embodiments, the power plant turbine oil system safety online early warning device further includes: a first bellows, which is disposed inside the oil tank and sleeved outside the threaded rod, with its upper end connected to the upper end face of the oil tank and its lower end face connected to the mounting component; and a second bellows, which is disposed inside the oil tank and sleeved outside the threaded rod, with its lower end connected to the lower end face of the oil tank and its upper end face connected to the mounting component; both the first bellows and the second bellows are made of fluororubber material.

[0010] In some embodiments, the mounting member has a mounting cavity extending along the length of the mounting member. The cleaning assembly further includes: a driving member disposed within the mounting cavity; and a transmission member, one end of which is connected to the driving member so that the driving member drives the transmission member to rotate. The transmission member is connected to a plurality of cleaning rings so that the transmission member drives the cleaning rings to rotate.

[0011] In some embodiments, the transmission component includes a conveyor belt and a plurality of first pulleys, both of which are disposed within the mounting cavity. The plurality of first pulleys are fitted one-to-one onto the cleaning ring, and the conveyor belt is fitted onto the plurality of first pulleys. The conveyor belt is connected to the driving component so that the driving component drives the cleaning ring to rotate via the conveyor belt and the plurality of first pulleys.

[0012] In some embodiments, the driving member includes: a threaded guide rod, which passes through the mounting member and is movable relative to the threaded guide rod in a vertical direction; the threaded guide rod having a helical groove extending helically from top to bottom; a slider, which passes through the helical groove and is movable relative to the helical groove in the extending direction of the helical groove; and a second pulley, which is disposed in the mounting cavity and sleeved on the outer periphery of the threaded guide rod, the second pulley being connected to the slider so that the slider drives the second pulley to rotate; and a conveyor belt sleeved on the outer periphery of the first pulley and the second pulley so that the second pulley drives the conveyor belt to rotate.

[0013] In some embodiments, the cleaning ring includes a first portion and a second portion connected to each other in a vertical direction, wherein the outer peripheral surface of the first portion is an annular shape with a constant cross-sectional area, and the outer peripheral surface of the second portion gradually decreases from top to bottom.

[0014] In some embodiments, the mounting member has a plurality of through holes extending through the mounting member from top to bottom, and a plurality of cleaning rings are rotatably disposed in the plurality of through holes in a corresponding manner. The power plant turbine oil system safety online early warning device further includes: a plurality of first sealing rings, each of which is disposed in a corresponding manner in the plurality of through holes, the first sealing rings being sleeved on the upper end of the cleaning rings and the outer peripheral surface of the first sealing rings being in contact with the inner peripheral surface of the through holes; and / or, a plurality of second sealing rings, each of which is disposed in a corresponding manner in the plurality of through holes, the second sealing rings being sleeved on the lower end of the cleaning rings and the outer peripheral surface of the second sealing rings being in contact with the inner peripheral surface of the through holes.

[0015] In some embodiments, the power plant turbine oil system safety online early warning device further includes a plurality of guide rods, which extend in a vertical direction and are all mounted on the mounting member. The mounting member is movable in a vertical direction relative to the plurality of guide rods.

[0016] In some embodiments, the power plant turbine oil system safety online early warning device further includes a central controller and an audible and visual alarm. The central controller and the audible and visual alarm are both fixedly connected to the surface of the oil tank. The central controller is connected to the detection component and the audible and visual alarm respectively, so that when the detection component detects an abnormality in the turbine oil in the oil tank, the central controller controls the audible and visual alarm to issue an alarm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the online safety early warning device for a power plant turbine oil system according to an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram of the online safety early warning device for the turbine oil system of a power plant in this invention;

[0019] Figure 3 This is a schematic diagram of the cleaning component of the online safety early warning device for turbine oil systems in power plants in this invention.

[0020] Figure 4 This is a cross-sectional view of the cleaning component of the online safety early warning device for turbine oil systems in power plants according to the present invention.

[0021] Figure 5 for Figure 4 A magnified view of A in the middle.

[0022] Figure 6 This is a horizontal cross-sectional schematic diagram of the cleaning component of the online safety early warning device for power plant turbine oil systems in this invention.

[0023] Figure 7 This is an exploded schematic diagram of the cleaning component of the online safety early warning device for turbine oil systems in power plants according to the present invention.

[0024] Figure 8 This is a system flowchart of the online safety early warning device for power plant turbine oil systems according to the present invention.

[0025] Figure 9 This is an exploded schematic diagram of the drive component of the online safety early warning device for the turbine oil system in a power plant according to the present invention.

[0026] 100. Online safety early warning device for turbine oil system in power plants; 1. Oil tank; 2. Detection components; 21. Detection parts; 211. Viscosity sensor; 212. Fluid characteristic sensor; 213. Particle size sensor; 214. Trace moisture sensor; 215. Audible and visual alarm; 216. Remote terminal; 217. Oil filter; 218. Three-way solenoid valve; 219. Leakage sensor; 220. Liquid level sensor; 221. Central controller; 3 31. Cleaning component; 32. Power source; 33. Threaded rod; 34. Transmission component; 35. Conveyor belt; 36. First pulley; 37. Cleaning ring; 38. First part; 39. Second part; 30. Mounting component; 31. Through hole; 32. Drive component; 33. Threaded guide rod; 34. Slider; 35. Second pulley; 36. First bellows; 37. Second bellows; 38. First sealing ring; 39. Second sealing ring; 30. Guide rod. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The following description, with reference to the accompanying drawings, describes an online safety early warning device 100 for a power plant turbine oil system according to an embodiment of the present invention.

[0029] like Figure 1-9 As shown, the power plant turbine oil system safety online early warning device 100 according to an embodiment of the present invention includes: an oil tank 1, a detection component 2, and a cleaning component 3.

[0030] Tank 1 contains turbine oil. Specifically, as shown... Figure 1 and Figure 2 As shown, the fuel tank 1 is a rectangular fuel tank extending in the left and right direction. The tank material is made of corrosion-resistant and high-strength alloy material, which effectively prevents turbine oil from corroding the fuel tank 1 and extends the service life of the fuel tank 1.

[0031] The detection assembly 2 includes multiple detection elements 21, all of which are disposed inside the oil tank 1 and spaced apart along the length of the oil tank 1. These multiple detection elements 21 are used to detect the quality and level of the turbine oil in the oil tank 1. Specifically, as shown... Figure 1 and Figure 2 As shown, the detection component 2 includes multiple detection elements 21 spaced apart in the left-right direction. The multiple detection elements 21 can monitor key parameters such as the quality and level of the turbine oil in real time, thereby detecting the turbine oil in the oil tank 1.

[0032] The cleaning assembly 3 includes a mounting member 35 and multiple cleaning rings 34. The mounting member 35 is located inside the oil tank 1 and extends along the length of the oil tank 1. The mounting member 35 is movable vertically relative to the oil tank 1. The multiple cleaning rings 34 are all located on the mounting member 35 and are rotatable vertically relative to the mounting member 35. The multiple cleaning rings 34 are fitted one-to-one onto the detection element 21 so that the cleaning rings 34 can clean the dirt on the detection element 21. Specifically, as shown... Figures 2-4 As shown, the cleaning assembly 3 is used to clean the test piece 21 to address the problem of dirt easily adhering to it during long-term use, ensuring the accuracy of the test data. The cleaning assembly 3 includes a mounting piece 35 and multiple cleaning rings 34. The mounting piece 35 is a horizontal plate extending in the left-right direction. It is installed inside the oil tank 1 and can move vertically within the tank. The number of cleaning rings 34 is equal to the number of test pieces 21, and they are evenly distributed on the mounting piece 35 in the left-right direction. Each cleaning ring 34 can rotate vertically relative to the mounting piece 35. The cleaning rings 34 are made of wear-resistant and corrosion-resistant materials to ensure stable performance during long-term use. The inner diameter of the cleaning rings 34 matches the outer diameter of the test piece 21, and they are fitted onto the test piece 21 one-to-one. When the mounting piece 35 moves vertically under the action of the driving device, the cleaning rings 34 move and rotate accordingly, effectively scraping away dirt from the test piece 21 and keeping it clean.

[0033] The online safety early warning device 100 for turbine oil systems in power plants, as described in this embodiment of the invention, includes a cleaning component 3. A cleaning ring 34 can perform a combined up-and-down movement and rotation along the detection element 21. As the cleaning ring 34 moves up and down along the detection element 21, its inner wall comes into close contact with the detection end surface of the detection element 21, gradually scraping off the dirt adhering to it. During rotation, the cleaning ring 34 generates centrifugal force, which is used to quickly dislodge the scraped dirt, preventing it from re-adhering to the detection element 21 or the cleaning ring 34. This ensures the continuous effectiveness of the cleaning process and significantly increases the cleaning force and uniformity.

[0034] The online safety early warning device 100 for power plant turbine oil systems in this embodiment of the invention, from the perspective of cleaning power, increases the relative friction between the cleaning ring 34 and the detection end surface of the detection element 21 through rotational motion, enabling more thorough removal of stubborn dirt and oil stains and ensuring the cleanliness of the detection end surface. From the perspective of cleaning uniformity, the rotational motion allows the cleaning ring 34 to perform comprehensive, thorough cleaning of all parts of the detection end during its up-and-down movement, avoiding incomplete cleaning in certain areas and improving the overall cleaning effect on the detection end of the detection element 21.

[0035] The online safety early warning device 100 for turbine oil systems in power plants according to this invention includes a cleaning ring 34 that, after completing its cleaning task, also serves the important function of supporting the detection end of the detection component 21. In the environment of the turbine oil system's tank 1, the flow of oil and vibrations of the equipment may interfere with the detection end of the detection component 21, causing it to shift or sway, affecting the accuracy and stability of the detection. After cleaning, the cleaning ring 34 remains in a suitable position, supporting and fixing the detection end of the detection component 21, ensuring stable operation when detecting various parameters in the tank 1. This reduces errors caused by the swaying of the detection end, thereby ensuring that the entire early warning device can acquire real-time and accurate operating data of the turbine oil system, providing reliable early warning information for the safe and stable operation of the power plant.

[0036] In some embodiments, the cleaning component 3 further includes a power source 31 and a threaded rod 32.

[0037] The power source 31 is mounted on the oil tank 1. A threaded rod 32 extends vertically and is connected to the power source 31, so that the power source 31 drives the threaded rod 32 to rotate. The mounting member 35 has a threaded hole extending vertically through it, so that the rotation of the threaded rod 32 can move the mounting member 35 vertically. Specifically, as shown... Figure 4As shown, the power source 31 is a motor, located outside and above the oil tank 1. The threaded rod 32 is a vertically extending threaded rod 32, which is installed inside the oil tank 1. The upper end of the threaded rod 32 extends out of the oil tank 1 and is connected to the output shaft of the power source 31, enabling the power source 31 to drive the threaded rod 32 to rotate. The mounting part 35 has a threaded hole that penetrates the mounting part 35 in the vertical direction. The size of the threaded hole matches the outer diameter of the threaded rod 32 to ensure a tight meshing between the two. When the power source 31 starts, its output torque is transmitted to the threaded hole on the mounting part 35 through the threaded rod 32. As the threaded rod 32 rotates, due to the helical structure of the threaded hole, the mounting part 35 is subjected to a force in the vertical direction, thereby driving the entire mounting part 35 (and the cleaning ring 34 mounted on it) to move smoothly along the length of the threaded rod 32. This ensures that the cleaning ring 34 maintains close contact with the detection element 21 during the movement, thus achieving effective dirt cleaning.

[0038] In some embodiments, the mounting member 35 is provided with a mounting cavity, which is located along the length direction of the mounting member 35 (e.g., ...). Figure 1 Extending in the left and right directions (as shown), the cleaning component 3 also includes a drive component 36 and a transmission component 33.

[0039] The driving component 36 is located within the mounting cavity. One end of the transmission component 33 is connected to the driving component 36 so that the driving component 36 drives the transmission component 33 to rotate. The transmission component 33 is connected to multiple cleaning rings 34 so that the transmission component 33 drives the cleaning rings 34 to rotate. Specifically, the mounting component 35 has a rectangular cavity extending in the left-right direction. Both the driving component 36 and the transmission component 33 are located within the mounting cavity. The driving component 36 can be a motor and is connected to the transmission component 33 so that the transmission component 33 drives the driving component 36 to rotate. The transmission component 33 is connected to multiple cleaning rings 34. When the driving component 36 is started, the torque output by the driving component 36 is quickly and accurately transmitted to each cleaning ring 34 through the transmission component 33, causing the cleaning rings 34 to start rotating.

[0040] The transmission component 33 includes a conveyor belt 331 and multiple first pulleys 332. Both the conveyor belt 331 and the multiple first pulleys 332 are located within the mounting cavity. Each of the multiple first pulleys 332 is correspondingly fitted onto the cleaning ring 34. The conveyor belt 331 is fitted onto the multiple first pulleys 332. The conveyor belt 331 is connected to the driving component 36, so that the driving component 36 drives the cleaning ring 34 to rotate via the conveyor belt 331 and the multiple first pulleys 332. Specifically, as shown... Figure 3 and Figure 4As shown, the number of first pulleys 332 is equal to the number of cleaning rings 34. The first pulleys 332 are housed within the mounting cavity, and each first pulley 332 is fitted onto its corresponding cleaning ring 34. This ensures that each cleaning ring 34 receives independent and stable rotational power. The first pulleys 332 are made of wear-resistant and corrosion-resistant alloy steel, ensuring they are not easily worn during long-term use and maintain stable transmission performance. The conveyor belt 331, as the power transmission medium, is tightly fitted onto the multiple first pulleys 332. It is made of high-strength, high-elasticity rubber material, possessing excellent tensile and wear resistance. The surface of the conveyor belt 331 undergoes special treatment to increase the friction between it and the first pulleys 332, preventing slippage during transmission.

[0041] When the drive unit 36 ​​is activated, its output torque is rapidly and accurately transmitted to each of the first pulleys 332 via the conveyor belt 331. Due to the fixed connection between the first pulleys 332 and the cleaning rings 34, the torque is further converted into the rotational motion of the cleaning rings 34. The drive unit 36 ​​can then drive all the cleaning rings 34 to rotate simultaneously and at the same speed through the coordinated action of the conveyor belt 331 and the multiple first pulleys 332, achieving comprehensive and efficient cleaning of the surface of the inspection piece 21.

[0042] In summary, the cleaning ring 34 maintains a stable rotational speed and torque during rotation, effectively scraping away dirt from the detection element 21 and keeping the detection element 21 clean and maintaining detection accuracy. Meanwhile, since the transmission element 33 is completely housed within the mounting cavity, interference and damage to the transmission system from external factors are avoided, improving the stability and service life of the entire early warning device.

[0043] In some embodiments, the drive member 36 includes a threaded guide rod 361, a slider 362, and a second pulley 363.

[0044] The threaded guide rod 361 passes through the mounting member 35, and the mounting member 35 is movable in the vertical direction relative to the threaded guide rod 361. The threaded guide rod 361 is provided with a helical groove extending spirally from top to bottom. Specifically, as shown... Figure 7 and Figure 9 As shown, the threaded guide rod 361 is a guide rod that extends in the vertical direction. The threaded guide rod 361 passes through the mounting part 35, and the surface of the threaded guide rod 361 is provided with a spiral groove that extends spirally from top to bottom.

[0045] The slider 362 passes through the helical groove and is movable relative to the helical groove along its extension direction. Specifically, as shown... Figure 9 As shown, the slider 362 is inserted into the helical groove of the threaded guide rod 361, so that the slider 362 can move smoothly relative to the helical groove along the extension direction of the helical groove.

[0046] The second pulley 363 is located inside the mounting cavity and sleeved on the outer periphery of the threaded guide rod 361. The second pulley 363 is connected to the slider 362 so that the slider 362 drives the second pulley 363 to rotate. The conveyor belt 331 is sleeved on the outer periphery of the first pulley 332 and the second pulley 363 so that the second pulley 363 drives the conveyor belt 331 to rotate. Specifically, as shown... Figure 9 As shown, the second pulley 363 is sleeved on the outer circumferential surface of the threaded guide rod 361 and located within the mounting cavity. The conveyor belt 331 is sleeved on the outer circumferential side of the first pulley 332 and the second pulley 363. When the threaded rod 32 drives the mounting member 35 to move vertically, the mounting member 35 will drive the second pulley 363 to move vertically. The second pulley 363 will drive the slider 362 to move within the spiral groove, causing the second pulley 363 to rotate around its own axis. Simultaneously, when the second pulley 363 rotates under the drive of the slider 362, the friction between the conveyor belt 331 and the first pulley 332 transmits power to the first pulley 332, thereby driving the conveyor belt 331 to rotate. This realizes the power transmission and motion conversion function of the entire system, thereby driving the cleaning ring 34 on the first pulley 332 to rotate.

[0047] In some embodiments, the cleaning ring 34 includes a first portion 341 and a second portion 342 connected to each other in a vertical direction. The outer peripheral surface of the first portion 341 is an annular shape with a constant cross-sectional area, and the outer peripheral surface of the second portion 342 gradually decreases from top to bottom. Specifically, as shown... Figure 7 As shown, the first part 341 is the upper part of the cleaning ring 34, and the first part 341 is a circular ring with a constant cross-sectional area. When the first part 341 contacts the detection piece 21, it can provide a stable and uniform cleaning surface. The annular outer circumference ensures that the contact area between the cleaning ring 34 and the detection piece 21 remains consistent during rotation, thereby achieving uniform scraping of dirt from the surface of the detection piece 21. At the same time, the design with a constant cross-sectional area also enhances the strength and rigidity of the first part 341, enabling it to maintain a stable shape when subjected to friction and impact forces during the cleaning process, and is not prone to deformation or damage. In addition, the first pulley 332 is fitted onto the first part 341, thereby providing a mounting base for the first part 341.

[0048] The second part 342, with its tapered or trapezoidal structure featuring a gradually decreasing cross-sectional area, generates a downward thrust during rotation. This helps to quickly remove scraped dirt from the cleaning area, preventing it from accumulating again on the surface of the inspection piece 21. Simultaneously, the shape of the outer circumference of the second part 342 allows the cleaning ring 34 to gradually adapt to minor changes in the surface of the inspection piece 21, such as unevenness or curvature, as it moves downwards, ensuring thorough and deep cleaning.

[0049] In some embodiments, the mounting member 35 is provided with a plurality of through holes 351 extending through the mounting member 35 from top to bottom, and a plurality of cleaning rings 34 are rotatably disposed in the plurality of through holes 351 in a corresponding manner. The power plant turbine oil system safety online early warning device 100 also includes a plurality of first sealing rings 6 and a plurality of second sealing rings 7.

[0050] Multiple first sealing rings 6 are correspondingly disposed within multiple through holes 351. The first sealing ring 6 is fitted onto the upper end of the cleaning ring 34, and its outer circumferential surface is in contact with the inner circumferential surface of the through hole 351. Similarly, multiple second sealing rings 7 are correspondingly disposed within multiple through holes 351. The second sealing ring 7 is fitted onto the lower end of the cleaning ring 34, and its outer circumferential surface is in contact with the inner circumferential surface of the through hole 351. Specifically, as shown... Figure 7 As shown, the number of first sealing rings 6, second sealing rings 7, and cleaning rings 34 are equal. The first sealing ring 6 is made of highly elastic, oil-resistant rubber material. It is fitted onto the outer circumferential surface of the upper end face of the cleaning ring 34, with its outer circumferential surface fitting against the inner circumferential surface of the through hole 351. During the rotation of the cleaning ring 34, the first sealing ring 6 effectively prevents turbine oil from seeping into the mounting cavity from the upper part of the through hole 351, ensuring the dryness and cleanliness of the inside of the mounting component 35. Multiple second sealing rings 7 are also correspondingly arranged within multiple through holes 351, but they are fitted onto the lower end of the cleaning ring 34. The second sealing rings 7 are made of highly elastic, oil-resistant material, with their outer circumferential surface tightly fitted against the inner circumferential surface of the through hole 351. The second sealing ring 7 further enhances the sealing performance of the through hole 351, preventing turbine oil from seeping in from the bottom of the through hole 351. Together with the first sealing ring 6, it forms a double sealing protection mechanism. Thus, the first sealing ring 6 and the second sealing ring 7 improve the sealing performance of the cleaning assembly 3 and extend the service life of the device.

[0051] In some embodiments, the online safety early warning device 100 for power plant turbine oil systems further includes a plurality of guide rods 8, which extend in a vertical direction and are all mounted on a mounting member 35. The mounting member 35 is movable in a vertical direction relative to the plurality of guide rods 8. Specifically, as Figure 7 As shown, guide rod 8 is a vertical rod extending in the up-down direction, and there are 5 guide rods 8 in total (e.g. Figure 7 As shown in the diagram (5), multiple guide rods 8 are evenly distributed on the outer periphery of the threaded rod 32 and spaced apart along the circumference of the threaded rod 32. The mounting part 35 can move up and down on the guide rods 8, thereby ensuring the balance of the mounting part 35 during movement. The rigid support of the guide rods 8 also effectively prevents the mounting part 35 from shifting or tilting when under force.

[0052] In some embodiments, the plurality of detection elements 21 include a viscosity sensor 211, a fluid property sensor 212, a particle size sensor 213, and a trace moisture sensor 214. Specifically, as Figure 8 As shown, there are four detection components 21: a viscosity sensor 211, a fluid characteristic sensor 212, a particle size sensor 213, and a trace moisture sensor 214. The viscosity sensor 211 is used to monitor the turbine oil viscosity in real time to ensure lubrication performance. The fluid characteristic sensor 212 evaluates the oil circulation status by analyzing parameters such as flow rate and flow direction. The particle size sensor 213 detects the degree of solid particle contamination in the turbine oil to warn of equipment wear. The trace moisture sensor 214 accurately measures the water content of the turbine oil to prevent oxidation and corrosion. Thus, the viscosity sensor 211, the fluid characteristic sensor 212, the particle size sensor 213, and the trace moisture sensor 214 work together to ensure the safe and efficient operation of the turbine oil system in the tank.

[0053] In some embodiments, the power plant turbine oil system safety online early warning device 100 further includes a first bellows 4 and a second bellows 5.

[0054] The first bellows 4 is located inside the oil tank 1 and sleeved outside the threaded rod 32. The upper end of the first bellows 4 is connected to the upper end face of the oil tank 1, and the lower end face of the first bellows 4 is connected to the mounting part 35. The second bellows 5 is located inside the oil tank 1 and sleeved outside the threaded rod 32. The lower end of the second bellows 5 is connected to the lower end face of the oil tank 1, and the upper end face of the first bellows 4 is connected to the mounting part 35. Both the first bellows 4 and the second bellows 5 are made of fluororubber. Specifically, as shown... Figure 3 and Figure 4 As shown, the first bellows 4 and the second bellows 5 are both located inside the oil tank 1. The first bellows 4 and the second bellows 5 are both sleeved on the outer periphery of multiple guide rods 8 and threaded rods 32. The first bellows 4 is located above the second bellows 5. The upper and lower ends of the first bellows 4 can be connected to the upper end face of the oil tank 1 and the upper end face of the mounting part 35 respectively through a flange structure. The upper and lower ends of the second bellows 5 can be connected to the lower end face of the oil tank 1 and the lower end face of the mounting part 35 respectively through a flange structure. Thus, the first bellows 4 and the second bellows 5 form a closed protective cavity, isolating the turbine oil from direct contact with the threaded rod 32, preventing metal particles in the oil (such as iron filings generated by wear) from getting stuck in the thread gap, and preventing thread wear or jamming failure.

[0055] Both the first corrugated pipe 4 and the second corrugated pipe 5 are made of fluororubber, which improves the oil resistance, high temperature resistance (can withstand temperature changes from -40℃ to 200℃ for a long time), and anti-aging properties of the first corrugated pipe 4 and the second corrugated pipe 5. They can effectively resist the corrosion of additives and oxidative degradation products in turbine oil, thus improving the service life of the first corrugated pipe 4 and the second corrugated pipe 5.

[0056] In some embodiments, the online early warning device 100 for the turbine oil system safety of a power plant further includes a central controller 221 and an audible and visual alarm 215. Both the central controller 221 and the audible and visual alarm 215 are fixedly connected to the surface of the oil tank 1. The central controller 221 is connected to the detection component 2 and the audible and visual alarm 215 respectively, so that when the detection component 2 detects an abnormality in the turbine oil in the oil tank 1, the central controller 221 controls the audible and visual alarm 215 to issue an alarm. Specifically, as shown... Figure 8 As shown, the central controller 221 and the audible and visual alarm 215 are both installed on the outer surface of the oil tank 1. Multiple detection elements 21 are electrically connected to the central controller 221, so that the data detected by the multiple detection elements 21 is transmitted to the central controller 221. The central controller 221 is electrically connected to the audible and visual alarm 215. When the multiple detection elements 21 detect that at least one of the turbine oil level and quality in the oil tank 1 is abnormal, the central controller 221 controls the audible and visual alarm 215 to sound an alarm, thereby facilitating the maintenance technician to inspect the turbine oil system of the power plant.

[0057] The following is combined with Figure 1 - Figure 9 The present invention describes an online early warning device 100 for the safety of turbine oil systems in large hydropower plants.

[0058] In one embodiment, a safety online early warning device 100 for a turbine oil system in a large hydropower plant includes an oil tank 1 and an online early warning system. The online early warning system is installed on the surface of the oil tank 1, and the detection end of the online early warning system extends into the interior of the oil tank 1. A cleaning structure fitted onto the detection end of the online early warning system is installed inside the oil tank 1.

[0059] like Figure 1 , Figure 2 and Figure 8 As shown, the online early warning system includes a central controller 221, a viscosity sensor 211, a fluid characteristic sensor 212, a particle size sensor 213, a trace moisture sensor 214, an audible and visual alarm 215, a remote terminal 216, an oil filter 217, and a three-way solenoid valve 218. The central controller 221, viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213, trace moisture sensor 214, and audible and visual alarm 215 are all fixedly connected to the surface of the oil tank 1. The detection ends of the viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213, and trace moisture sensor 214 pass through the oil tank 1 and the cleaning ring 34 in sequence and extend into the interior of the oil tank 1. The online early warning system also includes a leakage sensor 219 and a liquid level sensor 220. The leakage sensor 219 is arranged in a low-lying area of ​​the oil tank, and the liquid level sensor 220 is arranged inside the oil tank.

[0060] During installation, the online early warning system is first fixedly connected to the oil outlet of the oil tank storing turbine oil. Then, the other two ends of the three-way solenoid valve 218 are fixedly connected to the inlet of the oil tank 1 and the inlet of the oil filter 217, respectively. Then, the outlet of the oil filter 217 is fixedly connected to the inlet of the oil tank. Finally, the outlet of the oil tank 1 is fixedly connected to the turbine oil inlet of the hydraulic equipment.

[0061] When turbine oil is needed, the staff remotely controls the central controller 221 through the remote terminal 216 to connect the oil tank and the oil tank 1 through the three-way solenoid valve 218. The turbine oil in the oil tank enters the oil tank 1 through the three-way solenoid valve 218. The oil tank 1 guides the turbine oil into the hydraulic equipment, so that the turbine oil can perform normal lubrication operations.

[0062] During this process, viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213, and trace moisture sensor 214 respectively detect the viscosity, fluid characteristics, particle size, and moisture content of the turbine oil and transmit the detection data to the central controller 221. The central controller 221 compares the detection data with a preset upper limit. When the detection data is greater than the upper limit, it indicates that the turbine oil quality is substandard. The central controller 221 controls the three-way solenoid valve 218 to connect the oil tank and the oil filter 217 according to the preset cleaning program. At this time, the turbine oil enters the oil filter 217 for filtration. Then, the oil filter 217 guides the cleaned turbine oil back to the oil tank. At the same time, the central controller 221 sends an alarm message to the remote terminal 216 and controls the activation of the audible and visual alarm 215. The audible and visual alarm 215 emits an audible and visual alarm so that staff can intervene and handle the situation in a timely manner.

[0063] During normal use of turbine oil, the liquid level sensor 220 can detect the liquid level in the oil tank in real time and transmit the detection data to the central controller 221. The central controller 221 compares the detection data with the preset lower limit data. When the detection data is lower than the lower limit data, the central controller 221 simultaneously sends an alarm message to the remote terminal 216 and controls the activation of the audible and visual alarm 215. The audible and visual alarm 215 emits an audible and visual alarm so that the staff can arrive in time and accurately fill the turbine oil.

[0064] During normal use of turbine oil, the leakage sensor 219 detects whether there is turbine oil in the low-lying areas of the oil depot in real time. If the leakage sensor 219 detects turbine oil, it indicates that the turbine oil is leaking. The central controller 221 simultaneously sends an alarm message to the remote terminal 216 and controls the activation of the audible and visual alarm 215. The audible and visual alarm 215 emits an audible and visual alarm so that staff can arrive in time to deal with the leak.

[0065] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the cleaning structure includes a power source 31 and a conveyor belt 331. The power source 31 is fixedly connected to the top of the oil tank 1. A threaded rod 32 is fixedly connected to the end of the output shaft of the power source 31. One end of the threaded rod 32 extends into the interior of the oil tank 1. A mounting part 35 is threadedly connected to the surface of the threaded rod 32. A cleaning ring 34, which is sleeved on the detection end of the online early warning system, is rotatably connected inside the mounting part 35. The cross-sectional shape of the lower surface of the cleaning ring 34 is an isosceles trapezoid. The diameter of the cleaning ring 34 gradually decreases from top to bottom. This can guide the dirt scraped off the detection end in a direction away from the detection end, so as to reduce the probability of dirt re-adhering to the detection end.

[0066] While the central controller 221 executes the cleaning command, it simultaneously drives the power source 31 to reciprocate. The power source 31 drives the threaded rod 32 to reciprocate. The threaded rod 32 drives the mounting part 35 to rise and fall along the reciprocating motion of the threaded rod 32. The mounting part 35 drives the cleaning ring 34 to rise and fall. During the downward movement, the cleaning ring 34 uniformly scrapes away the dirt adhering to the detection end, keeping the surface of the detection end clean and reducing interference during detection. This improves the operating accuracy of the online early warning system. At the same time, after the cleaning command ends, the cleaning ring 34 also supports the detection end, which enables the detection end to operate stably in the oil tank 1.

[0067] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a threaded guide rod 361 is inserted into the interior of the mounting component 35. Both ends of the threaded guide rod 361 extend through the mounting component 35 and are fixedly connected to the oil tank 1. A spiral groove is formed on the surface of the threaded guide rod 361, and a slider 362 is slidably connected to the inner side of the spiral groove. A first pulley 332 is fixed to the outer surface of the cleaning ring 34. A second pulley 363 is fitted on the outer circumferential surface of the threaded guide rod 361, and the inner circumferential surface of the second pulley 363 is connected to the slider 362. When the threaded rod 32 rotates, it drives the mounting component 35 to move in the up-down direction. The mounting component 35 drives the second pulley 363 to move up and down. Since the second pulley 363 drives the slider 362 to move in the spiral groove, the second pulley 363 rotates.

[0068] The first pulley 332 and the second pulley 363 are both connected by the conveyor belt 331. There are four cleaning rings 34 and four first pulleys 332, which ensures that the viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213 and trace moisture sensor 214 are effectively cleaned. The surface of the cleaning ring 34 is fitted with two first sealing rings 6 and two second sealing rings 7, both of which are in contact with the mounting part 35. The first sealing rings 6 and the second sealing rings 7 are symmetrically distributed on the upper and lower sides of the pulley, which reduces the probability of turbine oil or impurities entering the gap between the mounting part 35 and the cleaning ring 34, so as to ensure that the cleaning ring 34 can rotate normally. The mounting part 35 has an internal mounting cavity, and the conveyor belt 331 is slidably connected to the inside of the mounting cavity. The size and shape of the mounting cavity and the conveyor belt 331 are matched, which can limit the running trajectory of the conveyor belt 331 and prevent the conveyor belt 331 from "jumping" or "loosening".

[0069] During the lifting and lowering of the mounting component 35, the mounting component 35 synchronously drives the second pulley 363 to lift and lower. The second pulley 363, which is fixedly connected to the slider 362, drives the slider 362 to slide along the spiral groove on the surface of the threaded guide rod 361. The slider 362 drives the second pulley 363 connected to it to rotate along the spiral groove. The second pulley 363 drives the toothed conveyor belt 331 to drive the transmission. The toothed conveyor belt 331 drives the first pulley 332 to rotate. The first pulley 332 drives the cleaning ring 34 to rotate. This not only removes the scraped dirt, but also increases the cleaning force and uniformity through the rotational motion, thereby improving the cleaning effect on the detection end.

[0070] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the top and bottom ends of the mounting component 35 are fixedly connected to a first bellows 4 and a second bellows 5. The opposite ends of the first bellows 4 and the second bellows 5 are fixedly connected to the inner top wall and inner bottom wall of the oil tank 1, respectively. The threaded rod 32 and the threaded guide rod 361 are both located inside the bellows. The bellows can separate the threaded rod 32 and the threaded guide rod 361 from the turbine oil in the oil tank 1 to prevent dirt from adhering to the threaded rod 32 and the spiral groove, thereby ensuring that the cleaning ring 34 can rise, fall, and rotate normally for cleaning operations. The bellows is a fluororubber component, and the minimum radius of the inner side of the bellows is greater than that of the threaded rod 32 and the threaded guide rod 361. The distance between them improves the oil immersion resistance and elasticity of the bellows, enabling it to operate stably. A guide rod 8 is inserted inside the mounting component 35, with both ends of the guide rod 8 penetrating through the mounting component 35 and fixedly connected to the oil tank 1. There are at least five guide rods 8. The threaded guide rod 361 and the guide rods 8 are arranged in a ring around the centerline of the bellows, forming a ring on the inner side of the bellows. This not only separates the bellows from the threaded rod 32, preventing the threads on the threaded rod 32 from scratching the bellows and thus improving the sealing performance of the bellows, but also enhances the restraining effect on the mounting component 35, allowing it to rise and fall smoothly.

[0071] It should be noted that the central controller 221, viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213, trace moisture sensor 214, audible and visual alarm 215, remote terminal 216, oil filter 217, three-way solenoid valve 218, leakage sensor 219, liquid level sensor 220, and power source 31 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the central controller 221, viscosity sensor 211, fluid characteristic sensor 212, particle size sensor 213, trace moisture sensor 214, audible and visual alarm 215, remote terminal 216, oil filter 217, three-way solenoid valve 218, leakage sensor 219, liquid level sensor 220, and power source 31 can be powered by the built-in power supply or by mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An online early warning device for the safety of a turbine oil system in a power plant, characterized in that, include: An oil tank containing turbine oil; The detection component includes multiple detection elements, all of which are disposed inside the oil tank and spaced apart along the length of the oil tank. The multiple detection elements are used to detect the quality and level of the turbine oil in the oil tank. A cleaning assembly includes a mounting component and multiple cleaning rings. The mounting component is disposed inside the oil tank and extends along the length of the oil tank. The mounting component is movable in the vertical direction relative to the oil tank. The multiple cleaning rings are disposed on the mounting component and are rotatable about the vertical direction relative to the mounting component. The multiple cleaning rings are fitted one-to-one onto the detection component so that the cleaning rings clean the dirt on the detection component.

2. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, The cleaning component also includes: A power source, wherein the power source is located on the fuel tank; A threaded rod extends vertically and is connected to the power source so that the power source drives the threaded rod to rotate. The mounting component has a threaded hole that penetrates the mounting component vertically so that the threaded rod rotates to move the mounting component vertically.

3. The online safety early warning device for power plant turbine oil systems according to claim 2, characterized in that, Also includes: A first bellows is disposed inside the oil tank and sleeved outside the threaded rod. The upper end of the first bellows is connected to the upper end face of the oil tank, and the lower end face of the first bellows is connected to the mounting component. The second bellows is located inside the oil tank and sleeved outside the threaded rod. The lower end of the second bellows is connected to the lower end face of the oil tank, and the upper end face of the first bellows is connected to the mounting component. Both the first bellows and the second bellows are made of fluororubber.

4. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, The mounting component has a mounting cavity that extends along the length of the mounting component. The cleaning assembly further includes: A driving component, wherein the driving component is disposed within the mounting cavity; A transmission component, one end of which is connected to the driving component so that the driving component drives the transmission component to rotate, and the transmission component is connected to a plurality of cleaning rings so that the transmission component drives the cleaning rings to rotate.

5. The online safety early warning device for power plant turbine oil systems according to claim 4, characterized in that, The transmission component includes a conveyor belt and a plurality of first pulleys. The conveyor belt and the plurality of first pulleys are all disposed in the mounting cavity. The plurality of first pulleys are fitted one-to-one on the cleaning ring. The conveyor belt is fitted on the plurality of first pulleys. The conveyor belt is connected to the driving component so that the driving component drives the cleaning ring to rotate through the conveyor belt and the plurality of first pulleys.

6. The online safety early warning device for power plant turbine oil systems according to claim 4, characterized in that, The driving component includes: A threaded guide rod, which passes through the mounting member and the mounting member is movable in the vertical direction relative to the threaded guide rod, and the threaded guide rod is provided with a helical groove extending helically from top to bottom; A slider, which passes through the spiral groove and is movable relative to the spiral groove along the extension direction of the spiral groove; The second pulley is located inside the mounting cavity and sleeved on the outer periphery of the threaded guide rod. The second pulley is connected to the slider so that the slider drives the second pulley to rotate. The conveyor belt is sleeved on the outer periphery of the first pulley and the second pulley so that the second pulley drives the conveyor belt to rotate.

7. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, The cleaning ring includes a first part and a second part that are connected to each other in the vertical direction. The outer circumferential surface of the first part is a ring with a constant cross-sectional area, and the outer circumferential surface of the second part gradually decreases from top to bottom.

8. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, The mounting component has multiple through holes running through it from top to bottom, and multiple cleaning rings are rotatably disposed in the multiple through holes. The power plant turbine oil system safety online early warning device also includes: Multiple first sealing rings are provided one-to-one in multiple through holes. The first sealing rings are sleeved on the upper end of the cleaning ring and the outer peripheral surface of the first sealing ring is in contact with the inner peripheral surface of the through hole. And / or, a plurality of second sealing rings, each corresponding to one of the plurality of through holes, wherein the second sealing rings are sleeved on the lower end of the cleaning ring and the outer peripheral surface of the second sealing rings is in contact with the inner peripheral surface of the through hole.

9. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, It also includes a plurality of guide rods, which extend in the vertical direction and are all inserted through the mounting member, and the mounting member is movable in the vertical direction relative to the plurality of guide rods.

10. The online safety early warning device for power plant turbine oil systems according to claim 1, characterized in that, It also includes a central controller and an audible and visual alarm. The central controller and the audible and visual alarm are both fixedly connected to the surface of the fuel tank. The central controller is connected to the detection component and the audible and visual alarm respectively, so that when the detection component detects an abnormality in the turbine oil in the fuel tank, the central controller controls the audible and visual alarm to issue an alarm.

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