A kind of on-line monitoring system for lubricating oil of mine reducer with integrated double-cavity structure

Abstract

The application relates to the technical field of mine mechanical state monitoring, and discloses a mine speed reducer lubricating oil online monitoring system with an integrated double-cavity structure, which comprises an integrated box body, a double-cavity assembly is arranged in the inside of the integrated box body, a sensing assembly and a defoaming assembly are arranged in the inside of the double-cavity assembly from top to bottom, an oil outlet, an oil inlet and a first cable leading-in device are sequentially mounted on the outside of the integrated box body from top to bottom, the double-cavity assembly comprises an explosion-proof cavity, the explosion-proof cavity is arranged on the left side of the integrated box body, and an intrinsic safety cavity is arranged on the right side of the integrated box body. The explosion-proof cavity and the intrinsic safety cavity are separated by a partition plate in the inside of the integrated box body, the coal mine underground environment explosion-proof safety standard is met, the external independent wiring process generated by the scattered equipment scattered installation is omitted, the overall equipment occupied volume is reduced, and the layout condition of the narrow space of the coal mine underground working face is adapted.

Description

Technical Field

[0001] This application relates to the field of mining machinery condition monitoring technology, specifically to an online monitoring system for lubricating oil in a mining reducer with an integrated dual-cavity structure. Background Technology

[0002] As a core drive component of underground coal mine conveying equipment, the lubricating oil inside the mine reducer is prone to deterioration under long-term high-load operation. Utilizing online lubricating oil analysis technology to monitor the reducer's operating status provides a means to assess component wear and prevent equipment failure.

[0003] Existing online monitoring systems for reducer lubricating oil typically consist of independent components such as a data acquisition box, explosion-proof power supply, and explosion-proof circulating oil pump. These distributed components require independent external wiring, and their dispersed installation occupies significant space, making them unsuitable for the confined spaces surrounding underground coal mine working faces. During the lubricating oil circulation and extraction process, gas can easily mix into the fluid, forming bubbles. Lubricating oil carrying these bubbles directly entering the sensor can cause reading interference, leading to a decrease in the accuracy of the detection data.

[0004] Furthermore, the existing sensor piping layout is prone to fluid pressure crosstalk between different sensor sampling areas, resulting in the inability to stably and synchronously acquire multiple indicators. Additionally, the sensor data collected by existing monitoring systems can typically only be uploaded to the central control center for processing and display. The lack of local data parsing and human-machine interface at the equipment installation site fails to meet the needs of on-site maintenance personnel to access fluid parameters and perform equipment maintenance tasks locally.

[0005] Therefore, this application proposes an online monitoring system for lubricating oil in mining reducers with an integrated dual-chamber structure to address the shortcomings of existing technologies. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this application provides an integrated dual-chamber structure online monitoring system for lubricating oil in mining reducers. This system solves the problems of existing monitoring equipment being installed in a dispersed manner, occupying a large space, air bubbles interfering with sensor readings, fluid pressure crosstalk generated in sensor pipelines, and lacking a local data analysis and display interface.

[0007] To achieve the above objectives, this application provides the following technical solution: an online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure, comprising an integrated housing, wherein a dual-cavity assembly is provided inside the integrated housing, and a sensing component and an anti-foaming component are respectively provided inside the dual-cavity assembly from top to bottom, and an oil outlet, an oil inlet and a first cable introduction device are sequentially installed on the outside of the integrated housing from top to bottom;

[0008] The dual-cavity assembly includes an explosion-proof cavity, which is located on the left side of the integrated housing. An intrinsically safe cavity is located on the right side of the integrated housing. The explosion-proof cavity and the intrinsically safe cavity are separated by a partition. The sensing component and the defoaming component are both located inside the explosion-proof cavity.

[0009] Preferably, the defoaming component includes an online defoamer, which is disposed inside the explosion-proof cavity. A DC gear pump is fixedly connected to the inner wall of the explosion-proof cavity. The input end of the DC gear pump is connected to the oil inlet, and the output end of the DC gear pump is connected to the online defoamer.

[0010] Preferably, the sensing component includes parallel sensor pipelines, one end of which is connected to the online defoamer, and the other end of which is connected to the oil outlet. An oil metal particle sensor, an oil particle counting sensor, an oil multi-parameter sensor, and an oil water content sensor are respectively connected in parallel on the parallel sensor pipelines. A sensor base is fixedly connected to the inner wall of the explosion-proof cavity. The oil multi-parameter sensor and the oil water content sensor are both fixedly connected to the outside of the sensor base. The oil metal particle sensor and the oil particle counting sensor are both fixedly connected to the inner wall of the explosion-proof cavity. The oil metal particle sensor, the oil particle counting sensor, the oil multi-parameter sensor, and the oil water content sensor are all located inside the explosion-proof cavity.

[0011] Preferably, the online defoamer includes a defoaming oil tank, a bubble-piercing filter, and a screw plug. The defoaming oil tank, the bubble-piercing filter, and the screw plug together form a vertically installed closed cavity. The defoaming oil tank is fixedly connected to the inner wall of the explosion-proof cavity. An inlet is provided on one side of the defoaming oil tank, and an outlet is provided at the other end of the defoaming oil tank. The bubble-piercing filter is disposed inside the defoaming oil tank and is located between the inlet and the outlet. The screw plug is disposed on the top of the defoaming oil tank.

[0012] Preferably, an explosion-proof through-wall terminal is fixedly connected to the middle of the partition, and a data acquisition board is provided on the inner wall of the intrinsically safe cavity. One end of the explosion-proof through-wall terminal is electrically connected to the oil metal particle sensor, the oil particle counting sensor, the oil multi-parameter sensor, and the oil water content sensor, respectively, and the other end of the explosion-proof through-wall terminal is electrically connected to the data acquisition board.

[0013] Preferably, an explosion-proof terminal block is fixedly connected to the middle of the partition. A circuit breaker, a 12V DC power supply, and a 12V intrinsically safe power supply are respectively provided on the inner wall of the explosion-proof cavity. The circuit breaker is connected to the first cable entry device. The circuit breaker is electrically connected to the 12V DC power supply and the 12V intrinsically safe power supply respectively. The 12V DC power supply is electrically connected to the DC gear pump. One end of the explosion-proof terminal block is electrically connected to the 12V intrinsically safe power supply, and the other end of the explosion-proof terminal block is electrically connected to the data acquisition board.

[0014] Preferably, the inner wall of the intrinsically safe cavity is provided with a main control board, and a ribbon cable is provided on the outer side of the main control board, with the other end of the ribbon cable connected to the data acquisition board.

[0015] Preferably, the integrated enclosure has an intrinsically safe cavity cover, on which a touch screen and an input keyboard are mounted, and both the touch screen and the input keyboard are electrically connected to the main control board.

[0016] Preferably, the exterior of the integrated enclosure is provided with a WIFI terminal antenna, a 4G / 5G terminal antenna, a second cable entry device, and a network cable entry device, and the main control board is electrically connected to the WIFI terminal antenna, the 4G / 5G terminal antenna, the second cable entry device, and the network cable entry device, respectively.

[0017] Preferably, the main control board is equipped with intermittent periodic detection logic. The main control board is connected to the input keyboard and receives alarm threshold parameters, communication parameters, and detection interval period parameters. At the beginning of a detection cycle, the main control board starts the DC gear pump and triggers all the sensing components inside the parallel sensor pipeline to work.

[0018] This application provides an online monitoring system for lubricating oil in mining gearboxes with an integrated dual-chamber structure. It has the following advantages: 1. This application uses a partition inside an integrated enclosure to separate a sealed explosion-proof chamber and an intrinsically safe chamber. The lubricating oil circulation pipeline and sensing components are centrally arranged inside the explosion-proof chamber, while the data acquisition board and main control board are centrally arranged inside the intrinsically safe chamber. The integrated dual-chamber structure highly integrates the oil circulation function with the electrical control function, which not only meets the explosion-proof safety standards for underground coal mine environments, but also eliminates the external independent wiring process caused by the scattered installation of scattered equipment, reduces the overall equipment volume, and adapts to the narrow space conditions of underground coal mine working faces.

[0019] 2. This application installs an online defoamer at the fluid input end and vertically installs a bubble-piercing filter with a microscopic sharp edge structure inside the online defoamer. When the oil enters the defoaming oil tank, it naturally floats to the surface due to buoyancy and penetrates the bubble-piercing filter. The bubble-piercing filter punctures the bubble liquid film, causing the bubbles to break. Combined with the design of the output port position being lower than the height of the top bubble accumulation area, the gas mixed in with the oil sample flowing to the sensing component is filtered out, preventing bubbles from interfering with the sensor readings and improving the accuracy of various oil index detection data.

[0020] 3. This application incorporates parallel sensor piping within the explosion-proof cavity and a main control board and touchscreen display within the intrinsically safe cavity. The parallel sensor piping provides independent branch channels for multiple sensors, preventing fluid pressure crosstalk between different sensor sampling areas and enabling parallel and synchronous monitoring of multiple lubricating oil parameters. Simultaneously, the main control board receives and processes the sensor data, providing a local analysis display interface on the touchscreen display. Combined with multiple network communication interfaces, it facilitates remote data transmission to the central control center, enabling on-site and remote management personnel to perform predictive maintenance. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present application; Figure 2 This is a schematic diagram of the intrinsically safe cavity cover structure of this application; Figure 3 This is a schematic diagram of the online defoamer structure of this application; Figure 4 This is a schematic diagram of the sensor base structure of this application.

[0022] Among them, 11. Explosion-proof chamber; 12. Intrinsically safe chamber; 101. Oil inlet; 102. Oil outlet; 103. First cable entry device; 104. Explosion-proof through-wall terminal; 105. Explosion-proof wiring terminal; 106. WIFI terminal antenna; 107. 4G / 5G terminal antenna; 108. Second cable entry device; 109. Network cable entry device; 111. DC gear pump; 112. Online defoamer; 1121. Defoaming oil tank; 1122. 1123. Bubble filter; 1124. Screw plug; 113. Oil metal particle sensor; 114. Oil particle counting sensor; 115. Oil multi-parameter sensor; 116. Oil water content sensor; 117. Sensor mount; 118. 12V DC power supply; 119. Circuit breaker; 120. 12V intrinsically safe power supply; 121. Data acquisition board; 122. Main control board; 123. Touch screen display; 124. Input keyboard; 125. Ribbon cable. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] See appendix Figure 1 An online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure includes an integrated housing, a dual-cavity assembly inside the integrated housing, a sensing assembly and an anti-foaming assembly arranged from top to bottom inside the dual-cavity assembly, and an oil outlet 102, an oil inlet 101 and a first cable introduction device 103 installed from top to bottom on the outside of the integrated housing. In one specific embodiment, the oil inlet 101 forms the channel for oil to enter the integrated housing, and the oil outlet 102 forms the channel for oil to flow out of the integrated housing and return to the reducer oil tank. The oil inlet 101 and the oil outlet 102 work together with the external reducer oil tank to establish an external lubricating oil circulation closed loop. The first cable introduction device 103 provides a physical interface for the external power cable to penetrate the outer wall of the integrated housing and maintains a sealed state at the perforation. The dual-cavity assembly constructs an isolated space inside the integrated housing, isolating the explosion-proof environment of the lubricating oil circulation from the intrinsically safe environment of the electrical signal. The defoaming component is installed in the fluid... At the input end, the defoaming component performs bubble breaking and separation on the oil entering the integrated housing, eliminating the mixing of gas inside the fluid. The sensing component receives the oil after being processed by the defoaming component, and detects and outputs the physical and chemical state parameters of the oil flowing through the pipeline. The integrated housing assembles the defoaming component, the sensing component, and related electrical control units in the same structure. The centralized physical structure eliminates the external independent wiring process of scattered equipment, reduces the overall equipment volume, adapts to the layout conditions of narrow spaces in coal mines, and eliminates pipeline losses and wiring interference caused by decentralized installation.

[0025] See appendix Figure 1 The dual-cavity assembly includes an explosion-proof cavity 11, which is located on the left side of the integrated enclosure. An intrinsically safe cavity 12 is located on the right side of the integrated enclosure. The explosion-proof cavity 11 and the intrinsically safe cavity 12 are separated by a partition. The sensing component and the defoaming component are both located inside the explosion-proof cavity 11.

[0026] In one specific embodiment, a partition separates two sealed chambers within an integrated enclosure. The partition establishes an explosion-proof barrier between the explosion-proof chamber 11 and the intrinsically safe chamber 12. An oil circulation pipeline is arranged inside the explosion-proof chamber 11 to handle fluid flow. Data acquisition and human-machine interface operations are centralized inside the intrinsically safe chamber 12, processing electrical signals to output intrinsically safe signals and isolate electrical sparks, meeting the explosion-proof requirements of underground coal mine environments.

[0027] See appendix Figure 1 The defoaming component includes an online defoamer 112, which is installed inside the explosion-proof chamber 11. A DC gear pump 111 is fixedly connected to the inner wall of the explosion-proof chamber 11. The input end of the DC gear pump 111 is connected to the oil inlet 101, and the output end of the DC gear pump 111 is connected to the online defoamer 112.

[0028] In one specific embodiment, the DC gear pump 111 provides suction negative pressure in the pipeline. The DC gear pump 111 draws lubricating oil from the external reducer oil sump. The drawn lubricating oil enters the explosion-proof chamber 11 through the oil inlet 101. The DC gear pump 111 directly pumps the lubricating oil into the inline defoamer 112 to perform bubble filtration. The inline defoamer 112 constitutes the oil circuit circulation pretreatment unit.

[0029] See appendix Figure 1 and attached Figure 4 The sensing assembly includes parallel sensor pipelines. One end of the parallel sensor pipelines is connected to the online defoamer 112, and the other end is connected to the oil outlet 102. An oil metal particle sensor 113, an oil particle counting sensor 114, an oil multi-parameter sensor 115, and an oil water content sensor 116 are respectively arranged in parallel on the parallel sensor pipelines. A sensor base 117 is fixedly connected to the inner wall of the explosion-proof cavity 11. The oil multi-parameter sensor 115 and the oil water content sensor 116 are both fixedly connected to the outside of the sensor base 117. The oil metal particle sensor 113 and the oil particle counting sensor 114 are both fixedly connected to the inner wall of the explosion-proof cavity 11. The oil metal particle sensor 113, the oil particle counting sensor 114, the oil multi-parameter sensor 115, and the oil water content sensor 116 are all located inside the explosion-proof cavity 11.

[0030] In one specific embodiment, the parallel sensor pipeline provides multiple independent oil branch channels. The branch channels prevent fluid pressure crosstalk between different sensor sampling areas. The oil metal particle sensor 113 detects the value of ferromagnetic wear particles and non-ferromagnetic particles inside the oil. The oil particle counting sensor 114 measures the size distribution, number of particles, and contamination level of contaminants. The oil multi-parameter sensor 115 simultaneously collects temperature, dynamic viscosity, density, kinematic viscosity at 40°C, and water activity and dielectric constant. The oil water content sensor 116 monitors the water content of the oil. Both the oil multi-parameter sensor 115 and the oil water content sensor 116 are fixedly connected to the outside of the sensor base 117 by threaded installation. Multiple indicators are monitored in parallel and in real time through multiple data acquisition ports.

[0031] See appendix Figure 3The online defoamer 112 includes a defoaming oil tank 1121, a bubble-piercing filter 1122, and a screw plug 1123. The defoaming oil tank 1121, the bubble-piercing filter 1122, and the screw plug 1123 together form a vertically installed closed cavity. The defoaming oil tank 1121 is fixedly connected to the inner wall of the explosion-proof cavity 11. An inlet is provided on one side of the defoaming oil tank 1121, and an outlet is provided at the other end of the defoaming oil tank 1121. The bubble-piercing filter 1122 is located inside the defoaming oil tank 1121, and the bubble-piercing filter 1122 is located between the inlet and the outlet. The screw plug 1123 is located on the top of the defoaming oil tank 1121.

[0032] In one specific embodiment, the inlet is located at the bottom side of the defoaming oil tank 1121. The oil flows tangentially into the defoaming oil tank 1121 through the inlet and rises inside the defoaming oil tank 1121. The bubbles rise naturally inside the defoaming oil tank 1121 due to buoyancy. The oil carries the bubbles through one or more layers of bubble-piercing filter 1122. The bubble-piercing filter 1122 is made of stainless steel wire mesh and has a microscopic sharp edge structure, which pierces the bubble liquid film and causes the bubbles to break. The remaining unbroken bubbles continue to rise and stay on the top liquid surface of the defoaming oil tank 1121. The outlet is located in the middle of the side wall of the defoaming oil tank 1121. The outlet is located above the bubble-piercing filter 1122 and the height of the outlet is lower than the height of the top bubble accumulation area. The oil sample that has been defoamed is discharged from the outlet and flows to the sensing component. The bubble filtration process filters out the interference source of the sensing component reading error, ensuring the accuracy of the detection data.

[0033] See appendix Figure 1 An explosion-proof through-wall terminal 104 is fixedly connected to the middle of the partition. A data acquisition board 121 is provided on the inner wall of the intrinsically safe cavity 12. One end of the explosion-proof through-wall terminal 104 is electrically connected to the oil metal particle sensor 113, the oil particle counting sensor 114, the oil multi-parameter sensor 115, and the oil water content sensor 116, respectively. The other end of the explosion-proof through-wall terminal 104 is electrically connected to the data acquisition board 121.

[0034] In one specific embodiment, the data acquisition board 121 supplies DC 12V power to the oil metal particle sensor 113, oil particle counting sensor 114, oil multi-parameter sensor 115, and oil water content sensor 116. The sensing components generate RS485 digital electrical signals or 4mA-20mA analog electrical signals. The electrical signals are transmitted to the data acquisition board 121 through the metal pins inside the explosion-proof wall-penetrating terminal 104, while avoiding cross-flow of gas between the two sides.

[0035] See appendix Figure 1An explosion-proof terminal block 105 is fixedly connected to the middle of the partition. A circuit breaker 119, a 12V DC power supply 118, and a 12V intrinsically safe power supply 120 are respectively installed on the inner wall of the explosion-proof cavity 11. The circuit breaker 119 is connected to the first cable entry device 103. The circuit breaker 119 is electrically connected to the 12V DC power supply 118 and the 12V intrinsically safe power supply 120 respectively. The 12V DC power supply 118 is electrically connected to the DC gear pump 111. One end of the explosion-proof terminal block 105 is electrically connected to the 12V intrinsically safe power supply 120, and the other end of the explosion-proof terminal block 105 is electrically connected to the data acquisition board 121.

[0036] In one specific embodiment, an external AC 127V power supply passes through the first cable entry device 103 and is connected to the circuit breaker 119. The circuit breaker 119 cuts off the power supply when the current exceeds the limit. The 12V DC power supply 118 converts the AC 127V to DC 12V to supply power to the DC gear pump 111. At the same time, the 12V intrinsically safe power supply 120 converts the AC 127V to intrinsically safe DC 12V voltage and enters the intrinsically safe cavity 12 along the explosion-proof terminal 105 to supply power to the data acquisition board 121.

[0037] See appendix Figure 1 The inner wall of the intrinsically safe cavity 12 is provided with a main control board 122, and a ribbon cable 125 is provided on the outer side of the main control board 122. The other end of the ribbon cable 125 is connected to the data acquisition board 121.

[0038] In one specific embodiment, the ribbon cable 125 provides a multi-channel path for data transmission, the data acquisition board 121 packages the signals collected by the front-end sensor into digital messages, the main control board 122 receives the digital messages and performs data decoding, logical operations and local storage operations, supports local parsing and processing of lubricating oil status data, and provides the internal data closed-loop operation capability of the device.

[0039] See appendix Figure 1 and attached Figure 2 The integrated enclosure has an intrinsically safe cavity cover, on which a touch screen 123 and an input keyboard 124 are installed. Both the touch screen 123 and the input keyboard 124 are electrically connected to the main control board 122.

[0040] In one specific embodiment, the touch screen 123 reads the video output signal of the main control board 122, displays various oil parameter values ​​and historical trend curves, and the input keyboard 124 receives external key operation signals and transmits operation instructions to the main control board 122, thus constructing a local human-machine interaction node with the input structure.

[0041] See appendix Figure 1The exterior of the integrated enclosure is equipped with a WIFI terminal antenna 106, a 4G / 5G terminal antenna 107, a second cable entry device 108, and a network cable entry device 109. The main control board 122 is electrically connected to the WIFI terminal antenna 106, the 4G / 5G terminal antenna 107, the second cable entry device 108, and the network cable entry device 109, respectively.

[0042] In one specific embodiment, the main control board 122 transmits monitoring data to the communication output module, the WIFI terminal antenna 106 modulates and transmits the data to the underground local wireless network, the 4G / 5G terminal antenna 107 modulates and transmits the data to the cellular wireless network, the second cable entry device 108 connects the RS485 communication cable to the external control center, and the network cable entry device 109 has an RJ45 network interface inside to access the underground Ethernet node. Multiple types of network interfaces complete the remote backhaul of data to the surface server.

[0043] The main control board 122 has an intermittent period detection logic. The main control board 122 is connected to the input keyboard 124 and receives alarm threshold parameters, communication parameters and detection interval parameters. At the beginning of a detection cycle, the main control board 122 starts the DC gear pump 111 and triggers all the sensing components inside the parallel sensor pipeline to work.

[0044] In one specific embodiment, the main control board 122 is equipped with a system timer. When the detection interval time does not meet the set parameter, the system remains in a sleep standby state. When the timer reaches the detection interval period parameter value, the main control board 122 outputs a high-level start command to the DC gear pump 111. The DC gear pump 111 rotates, causing the fluid to circulate in parallel through the sensing components. After the detection period parameter duration is consumed, the main control board 122 cancels the start command, the DC gear pump 111 stops rotating and terminates the oil circulation, and the system resets to a standby state. The intermittent control action reduces the accumulation of physical wear on the mechanical moving parts.

Claims

1. An online monitoring system for lubricating oil in a mining reducer with an integrated dual-cavity structure, characterized in that, It includes an integrated housing, the interior of which is provided with a dual-cavity assembly, and the interior of the dual-cavity assembly is provided with a sensing component and a defoaming component from top to bottom. The exterior of the integrated housing is provided with an oil outlet (102), an oil inlet (101) and a first cable introduction device (103) from top to bottom. The dual-cavity assembly includes an explosion-proof cavity (11), which is located on the left side of the integrated housing. An intrinsically safe cavity (12) is located on the right side of the integrated housing. The explosion-proof cavity (11) and the intrinsically safe cavity (12) are separated by a partition. The sensing component and the defoaming component are both located inside the explosion-proof cavity (11). The defoaming assembly includes an online defoamer (112), which is disposed inside the explosion-proof cavity (11). A DC gear pump (111) is fixedly connected to the inner wall of the explosion-proof cavity (11). The input end of the DC gear pump (111) is connected to the oil inlet (101), and the output end of the DC gear pump (111) is connected to the online defoamer (112). The sensing assembly includes parallel sensor lines, one end of which is connected to the online defoamer (112), and the other end of which is connected to the oil outlet (102). An oil metal particle sensor (113), an oil particle counting sensor (114), an oil multi-parameter sensor (115), and an oil water content sensor (116) are respectively connected in parallel on the parallel sensor lines. A sensor base (117) is fixedly connected to the inner wall of the explosion-proof cavity (11). The oil multi-parameter sensor (115) and the oil water content sensor (116) are both fixedly connected to the outside of the sensor base (117). The oil metal particle sensor (113) and the oil particle counting sensor (114) are both fixedly connected to the inner wall of the explosion-proof cavity (11). The oil metal particle sensor (113), the oil particle counting sensor (114), the oil multi-parameter sensor (115) and the oil water content sensor (116) are all located inside the explosion-proof cavity (11).

2. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 1, characterized in that, The online defoamer (112) includes a defoaming oil tank (1121), a bubble-piercing filter (1122), and a screw plug (1123). The defoaming oil tank (1121), the bubble-piercing filter (1122), and the screw plug (1123) together form a vertically installed closed cavity. The defoaming oil tank (1121) is fixedly connected to the inner wall of the explosion-proof cavity (11). An inlet is provided on one side of the defoaming oil tank (1121), and an outlet is provided at the other end of the defoaming oil tank (1121). The bubble-piercing filter (1122) is located inside the defoaming oil tank (1121) and is located between the inlet and the outlet. The screw plug (1123) is located on the top of the defoaming oil tank (1121).

3. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 1, characterized in that, An explosion-proof wall-penetrating terminal (104) is fixedly connected to the middle of the partition. A data acquisition board (121) is provided on the inner wall of the intrinsically safe cavity (12). One end of the explosion-proof wall-penetrating terminal (104) is electrically connected to the oil metal particle sensor (113), the oil particle counting sensor (114), the oil multi-parameter sensor (115), and the oil water content sensor (116), respectively. The other end of the explosion-proof wall-penetrating terminal (104) is electrically connected to the data acquisition board (121).

4. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 3, characterized in that, An explosion-proof terminal block (105) is fixedly connected to the middle of the partition. A circuit breaker (119), a 12V DC power supply (118), and a 12V intrinsically safe power supply (120) are respectively provided on the inner wall of the explosion-proof cavity (11). The circuit breaker (119) is connected to the first cable entry device (103). The circuit breaker (119) is electrically connected to the 12V DC power supply (118) and the 12V intrinsically safe power supply (120) respectively. The 12V DC power supply (118) is electrically connected to the DC gear pump (111). One end of the explosion-proof terminal block (105) is electrically connected to the 12V intrinsically safe power supply (120), and the other end of the explosion-proof terminal block (105) is electrically connected to the data acquisition board (121).

5. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 4, characterized in that, The inner wall of the intrinsically safe cavity (12) is provided with a main control board (122), and a ribbon cable (125) is provided on the outer side of the main control board (122). The other end of the ribbon cable (125) is connected to the data acquisition board (121).

6. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 5, characterized in that, The integrated enclosure has an intrinsically safe cavity cover, on which a touch screen (123) and an input keyboard (124) are installed. The touch screen (123) and the input keyboard (124) are both electrically connected to the main control board (122).

7. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 5, characterized in that, The exterior of the integrated enclosure is provided with a WIFI terminal antenna (106), a 4G / 5G terminal antenna (107), a second cable entry device (108), and a network cable entry device (109). The main control board (122) is electrically connected to the WIFI terminal antenna (106), the 4G / 5G terminal antenna (107), the second cable entry device (108), and the network cable entry device (109).

8. The online monitoring system for lubricating oil of a mining reducer with an integrated dual-cavity structure according to claim 6, characterized in that, The main control board (122) is equipped with intermittent period detection logic. The main control board (122) is connected to the input keyboard (124) and receives alarm threshold parameters, communication parameters and detection interval period parameters. At the beginning of a detection cycle, the main control board (122) starts the DC gear pump (111) and triggers all the sensing components inside the parallel sensor pipeline to work.

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