Oil online monitoring system

Abstract

The utility model discloses an oil online monitoring system, and belongs to the technical field of oil monitoring. The oil online monitoring system comprises an intrinsic safety cavity, an explosion-proof type through-wall terminal and an explosion-proof cavity, the intrinsic safety cavity is provided with a pipeline and an intrinsic safety oil monitoring sensor, and the intrinsic safety oil monitoring sensor is used for monitoring oil in the pipeline; one end of the explosion-proof wall-through terminal is in communication connection with the intrinsic safety oil monitoring sensor through the explosion-proof wall-through terminal; the explosion-proof cavity is provided with a data acquisition board, an intrinsic safety power supply and a non-intrinsic safety power supply, the non-intrinsic safety power supply is used for supplying power to the data acquisition board, and the intrinsic safety power supply is used for supplying power to the intrinsic safety oil monitoring sensor; and the data acquisition board is in communication connection with the external terminal equipment and the other end of the explosion-proof wall-through terminal, so that explosion-proof protection is realized, the structure is prevented from being damaged, and the safety and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of oil monitoring technology, and in particular to an online oil monitoring system. Background Technology

[0002] The assessment of the operating status of mechanical equipment utilizes the analysis of in-use oils. This involves real-time dynamic monitoring, prediction, and diagnosis of the in-use oil's indicators, such as physicochemical properties, contamination levels, and abrasive particle concentration, to propose management measures and maintenance suggestions for the equipment's operating status. Therefore, monitoring the condition of mechanical equipment is essentially monitoring the in-use oils.

[0003] Oil quality indicators obtained through oil monitoring technology can directly reflect the operating status of mechanical equipment, representing a significant measure to reduce accidents, ensure safety, and improve the environment. Extensive domestic and international application practice has proven that oil monitoring technology can detect wear and tear faults in mechanical equipment early, improving its reliability and safety during use, and significantly reducing economic losses due to downtime and maintenance caused by equipment failures. It shifts from scheduled maintenance to condition-based maintenance, guiding and predicting optimal maintenance times, reducing equipment downtime frequency and maintenance costs. Furthermore, it accurately obtains the quality of oil in mechanical equipment, enabling on-demand oil changes instead of scheduled oil changes, greatly reducing oil loss and economic losses. Oil monitoring technology is an effective means of monitoring and maintaining equipment operating status and an important basis for providing maintenance recommendations.

[0004] In existing technologies, oil monitoring technology mainly takes two forms: offline and online. Offline monitoring uses benchtop or portable laboratory instruments as oil monitoring devices. While these devices offer high accuracy, their complex operation and requirement for specialized personnel cause significant inconvenience. Furthermore, laboratory equipment is typically expensive, bulky, and requires specific environmental conditions, limiting its effectiveness. Online monitoring, on the other hand, can dynamically collect real-time information on oil parameters and wear conditions in machinery, providing early warnings of abnormal conditions and diagnosing equipment faults, thus ensuring safe and reliable operation. However, online oil monitoring systems involve complex wiring and oil piping. When used in machinery in the coal mining industry, the presence of explosive mixtures such as methane and coal dust underground, along with the high-intensity vibrations and temperatures generated by explosions, can directly damage the online oil monitoring structure, leading to its destruction. Utility Model Content

[0005] The purpose of this invention is to provide an online oil monitoring system that achieves explosion-proof protection, prevents structural damage, and improves safety and reliability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An online oil monitoring system, comprising:

[0008] The intrinsically safe cavity is equipped with pipelines and an intrinsically safe oil monitoring sensor, wherein the intrinsically safe oil monitoring sensor is used to monitor the oil in the pipeline;

[0009] An explosion-proof through-wall terminal is provided, with one end of which is communicatively connected to the intrinsically safe oil monitoring sensor via the explosion-proof through-wall terminal.

[0010] The explosion-proof cavity is equipped with a data acquisition board, an intrinsically safe power supply, and a non-intrinsically safe power supply. The non-intrinsically safe power supply is used to power the data acquisition board, and the intrinsically safe power supply is used to power the intrinsically safe oil monitoring sensor. The data acquisition board is communicatively connected to an external terminal device and the other end of the explosion-proof through-wall terminal.

[0011] In some possible implementations, the explosion-proof cavity is provided with at least two isolated safety barriers, and the data acquisition board is communicatively connected to an external terminal device and the other end of the explosion-proof through-wall terminal through at least two of the isolated safety barriers.

[0012] In some possible implementations, at least two of the isolation safety barriers are arranged in a horizontal direction.

[0013] In some possible implementations, the explosion-proof cavity is further provided with a capacitor isolation plate, a gateway, and an intrinsically safe wireless communication module. The data acquisition board is connected to the gateway through the intrinsically safe wireless communication module. The gateway is connected to the capacitor isolation plate, and the capacitor isolation plate is connected to the external terminal device.

[0014] In some possible implementations, at least two of the isolation safety barriers include a first isolation safety barrier, the intrinsically safe RS485 interface of the data acquisition board is connected to the first isolation safety barrier via a cable, and the first isolation safety barrier is connected to the external terminal device.

[0015] In some possible implementations, the explosion-proof cavity is further provided with a gateway, at least two of the isolated safety barriers include a second isolated safety barrier, the data acquisition board is connected to the gateway via an Ethernet cable, the gateway is connected to the second isolated safety barrier, and the second isolated safety barrier is connected to the external terminal device.

[0016] In some possible implementations, at least two of the isolation safety barriers include an RS485 isolation safety barrier and an analog isolation safety barrier, and the explosion-proof through-wall terminal is connected to the data acquisition board through the RS485 isolation safety barrier and the analog isolation safety barrier, respectively.

[0017] In some possible implementations, the explosion-proof cavity is further provided with a back plate, on which the data acquisition board, the intrinsically safe power supply, and the non-intrinsically safe power supply are all located.

[0018] In some possible implementations, the backplate is an insulating plate.

[0019] In some possible implementations, the intrinsically safe oil monitoring sensor includes an intrinsically safe pressure sensor, a mining intrinsically safe oil metal particle sensor, and a mining intrinsically safe multi-parameter oil sensor, wherein the mining intrinsically safe oil metal particle sensor and the mining intrinsically safe multi-parameter oil sensor are both located downstream of the intrinsically safe pressure sensor.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides an online oil monitoring system. By setting up an intrinsically safe cavity and an explosion-proof cavity, the data acquisition board, intrinsically safe power supply, and non-intrinsically safe power supply are all placed in the explosion-proof cavity. This ensures that in the event of an internal explosion in an explosive atmosphere, the propagation of flame and pressure is prevented, achieving explosion-proof protection. The intrinsically safe oil monitoring sensor is placed in the intrinsically safe cavity, achieving intrinsic safety protection. Explosion-proof through-wall terminals are respectively connected to the intrinsically safe oil monitoring sensor and the data acquisition board for communication, realizing communication between the intrinsically safe oil monitoring sensor and the data acquisition board. The intrinsically safe cavity provides independent installation space for the intrinsically safe oil monitoring sensor, avoiding the complexity of wiring and piping connections caused by external placement of the intrinsically safe oil monitoring sensor. The online oil monitoring system is suitable for situations such as underground coal mines with explosive mixtures such as methane and coal dust, preventing structural damage and improving safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an online oil monitoring system provided in a specific embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the explosion-proof cavity of the online oil monitoring system provided in a specific embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the online oil monitoring system provided in a specific embodiment of the present invention, and a schematic diagram of the intrinsically safe cavity.

[0025] Figure 4 This is a communication diagram of the online oil monitoring system provided in a specific embodiment of this utility model.

[0026] In the picture:

[0027] 1. Intrinsically safe cavity; 2. Piping; 21. Oil inlet; 22. Oil outlet; 3. Intrinsically safe pressure sensor; 4. Intrinsically safe oil-metal particle sensor for mining; 5. Intrinsically safe multi-parameter oil sensor for mining; 6. Explosion-proof through-wall terminal; 7. Explosion-proof cavity; 8. Data acquisition board; 10. Non-intrinsically safe power supply; 11. Isolated safety barrier; 12. Capacitor isolation board; 13. Gateway; 14. Intrinsically safe wireless communication module; 15. Backplane. Detailed Implementation

[0028] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1-4As shown, this embodiment provides an online oil monitoring system, including an intrinsically safe cavity 1, an explosion-proof cavity 7, and an explosion-proof through-wall terminal 6. The intrinsically safe cavity 1 is equipped with a pipeline 2 and an intrinsically safe oil monitoring sensor, which monitors the oil level in the pipeline 2. One end of the explosion-proof through-wall terminal 6 is communicatively connected to the intrinsically safe oil monitoring sensor via the explosion-proof through-wall terminal 6. The explosion-proof cavity 7 is equipped with a data acquisition board 8, an intrinsically safe power supply (not shown in the figure), and a non-intrinsically safe power supply 10. The non-intrinsically safe power supply 10 powers the data acquisition board 8, and the intrinsically safe power supply powers the intrinsically safe oil monitoring sensor. The data acquisition board 8 is communicatively connected to an external terminal device and the other end of the explosion-proof through-wall terminal 6.

[0032] By setting up an intrinsically safe cavity 1 and an explosion-proof cavity 7, the data acquisition board 8, intrinsically safe power supply, and non-intrinsically safe power supply 10 are all placed inside the explosion-proof cavity 7. This ensures that in the event of an internal explosion in an explosive atmosphere, the propagation of flame and pressure is prevented, achieving explosion-proof protection. The intrinsically safe oil monitoring sensor is placed in the intrinsically safe cavity 1, achieving intrinsic safety protection. Explosion-proof through-wall terminals 6 are connected to both the intrinsically safe oil monitoring sensor and the data acquisition board 8, enabling communication between them. The intrinsically safe cavity 1 provides independent installation space for the intrinsically safe oil monitoring sensor, avoiding the complexity of wiring and pipe connections required for external placement. The online oil monitoring system is suitable for applications such as underground coal mines containing explosive mixtures like methane and coal dust, preventing structural damage and improving safety.

[0033] The data acquisition board 8 is connected to external terminal equipment and intrinsically safe oil monitoring sensor respectively. Optionally, it adopts an intrinsically safe oil monitoring sensor with high performance that has obtained MA certification to accurately and in real time monitor the oil status in pipeline 2, provide customers with abnormal status early warning, complete oil monitoring, and transmit data to external terminal equipment through wired or wireless means.

[0034] Optionally, the intrinsically safe cavity 1 and the explosion-proof cavity 7 are an integral dual-cavity explosion-proof shell. In other embodiments, the intrinsically safe cavity 1 and the explosion-proof cavity 7 can also be separate structures. The intrinsically safe cavity 1 is located on one side of the explosion-proof cavity 7 along the horizontal direction. The pipeline 2 is provided with an oil inlet 21 and an oil outlet 22, which are located on the other side of the explosion-proof cavity 7 along the horizontal direction, reducing the vertical dimension of the online oil monitoring system.

[0035] The explosion-proof cavity 7 is equipped with at least two isolation safety barriers 11. The data acquisition board 8 is connected to the external terminal equipment and the other end of the explosion-proof through-wall terminal 6 through the at least two isolation safety barriers 11. Specifically, the explosion-proof through-wall terminal 6 is connected to the data acquisition board 8 through the isolation safety barriers 11, and the data acquisition board 8 is connected to the external terminal equipment through the isolation safety barriers 11. By setting the isolation safety barriers 11, isolated communication of the data acquisition board 8 is achieved.

[0036] The intrinsically safe oil monitoring sensor system includes an intrinsically safe pressure sensor 3, a mining-grade intrinsically safe oil metal particle sensor 4, and a mining-grade intrinsically safe multi-parameter oil sensor 5. Both the mining-grade intrinsically safe oil metal particle sensor 4 and the mining-grade intrinsically safe multi-parameter oil sensor 5 are located downstream of the intrinsically safe pressure sensor 3. During operation, the intrinsically safe pressure sensor 3 monitors the oil flow in the monitoring pipeline 2, generating pressure. The mining-grade intrinsically safe oil metal particle sensor 4 and the mining-grade intrinsically safe multi-parameter oil sensor 5 then begin to operate, testing parameters such as oil saturation, water content, viscosity, density, temperature, oil quality, and metal abrasive particles. This enables the online oil monitoring system to test indicators such as oil saturation, water content, viscosity, density, temperature, oil quality, and metal abrasive particles.

[0037] In this embodiment, four isolation safety barriers 11 are used, including two RS485 isolation safety barriers and an analog isolation safety barrier. The explosion-proof through-wall terminal 6 is connected to the data acquisition board 8 via the RS485 isolation safety barrier and the analog isolation safety barrier, respectively. The RS485 isolation safety barrier is mainly used for the isolated transmission of RS485 digital signals. It receives RS485 signals from the intrinsically safe cavity 1 in the hazardous area, processes them through isolation, and converts them into RS485 signals for output to the data acquisition board 8 in the safe area, i.e., the explosion-proof cavity. The analog isolation safety barrier is mainly used for the isolated transmission of analog signals, such as voltage and current. It is installed on one side of the explosion-proof cavity 7 in a safe location, limiting the voltage and current supplied to the intrinsically safe circuit within a certain safe range. Both the RS485 isolation safety barrier and the analog isolation safety barrier serve the functions of signal isolation and transmission, realizing isolated communication between the intrinsically safe oil monitoring sensor and the data acquisition board 8, while ensuring the safety of the system. For example, the intrinsically safe pressure sensor 3 outputs an analog signal, which is connected to the analog isolation safety barrier of the explosion-proof cavity 7 through the explosion-proof through-wall terminal 6. The mining intrinsically safe oil metal particle sensor 4 and the mining intrinsically safe multi-parameter oil sensor 5 both output digital signals, which are connected to the RS485 isolation safety barrier of the explosion-proof cavity 7 through the explosion-proof through-wall terminal 6.

[0038] The explosion-proof cavity 7 also includes a capacitor isolation plate 12, a gateway 13, and an intrinsically safe wireless communication module 14. The data acquisition board 8 is connected to the gateway 13 via the intrinsically safe wireless communication module 14. The gateway 13 is connected to the capacitor isolation plate 12, and the capacitor isolation plate 12 is connected to an external terminal device. The intrinsically safe wireless communication module 14 includes a 4G antenna and a WIFI antenna. The wireless 4G antenna / WIFI antenna is connected to the capacitor isolation plate 12 via the gateway 13 to achieve intrinsically safe wireless data transmission.

[0039] At least two isolated safety barriers 11 include a first isolated safety barrier. The intrinsically safe RS485 interface of the data acquisition board 8 is connected to the first isolated safety barrier via a cable. The first isolated safety barrier is connected to an external terminal device. The wired intrinsically safe RS485 signal is externally connected to the first isolated safety barrier 11 through the data acquisition board 8, thereby realizing wired intrinsically safe RS485 communication.

[0040] The explosion-proof cavity 7 is also equipped with a gateway 13, at least two isolated safety barriers 11 including a second isolated safety barrier, a data acquisition board 8 is connected to the gateway 13 via an Ethernet cable, the gateway 13 is connected to the second isolated safety barrier, the second isolated safety barrier is connected to an external terminal device, and the wired intrinsically safe Ethernet signal is achieved through the gateway 13 connected to the second isolated safety barrier to realize intrinsically safe Ethernet communication.

[0041] The intrinsically safe pressure sensor 3, intrinsically safe oil metal particle sensor 4, and intrinsically safe multi-parameter oil sensor 5 from the intrinsically safe cavity 1 are read through RS485 isolated safety barriers and analog isolated safety barriers. After processing by the data acquisition board 8, the data is output through the corresponding output interface according to the usage requirements. Optionally, the external terminal equipment includes the host of the intrinsically safe oil online monitoring device and the electric actuator for the explosion-proof pump. The data acquisition board 8 communicates with the host of the intrinsically safe oil online monitoring device wirelessly (4G intrinsically safe / WIFI intrinsically safe) or wiredly (RS485 intrinsically safe / Ethernet intrinsically safe). The non-safe RS485 interface of the host of the intrinsically safe oil online monitoring device is connected to the electric actuator for the explosion-proof pump through a cable to control the electric actuator for the explosion-proof pump to run at a specified speed.

[0042] The explosion-proof cavity 7 also includes a backplate 15, on which the data acquisition board 8, intrinsically safe power supply, non-intrinsically safe power supply 10, gateway 13, first isolated safety barrier, second isolated safety barrier, RS485 isolated safety barrier, and analog isolated safety barrier are all located. The non-intrinsically safe power supply 10 is also used to power the four isolated safety barriers 11 and the gateway 13. At least two isolated safety barriers 11 are arranged horizontally. Exemplarily, the first isolated safety barrier, second isolated safety barrier, RS485 isolated safety barrier, and analog isolated safety barrier, a total of four isolated safety barriers 11, are arranged horizontally or installed horizontally. Taking one isolated safety barrier 11 as an example, the intrinsically safe interface and non-safe interface of the horizontally installed safety barrier are located on the upper and lower sides of the left side of the safety barrier, reducing the overall height of the equipment and achieving a compact structure. In addition, during horizontal installation, the safety barrier is rotated 90° in the vertical plane based on the vertical installation. This ensures that the intrinsically safe interface of the safety barrier and the data acquisition board 8 are separated by at least the distance from the non-safe interface at the bottom of the safety barrier to the intrinsically safe interface at the top, better meeting the electrical clearance requirements and increasing the electrical clearance between intrinsically safe and non-safe barriers. Optionally, the intrinsically safe cavity 1 and the explosion-proof cavity 7 are arranged in the left-right direction, and the four isolated safety barriers 11 are arranged in the front-back direction.

[0043] The back plate 15 is an insulating plate, meaning that the back plate 15 is made of insulating material. In addition to providing installation support for the various components inside the explosion-proof cavity 7, it can also greatly improve the node withstand pressure strength of the equipment, ensure the stability and reliability of the safety barrier, and improve the safety of the online oil monitoring system.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An online oil monitoring system, characterized in that, include: The intrinsically safe cavity (1) is provided with a pipeline (2) and an intrinsically safe oil monitoring sensor, wherein the intrinsically safe oil monitoring sensor is used to monitor the oil in the pipeline (2); One end of the explosion-proof through-wall terminal (6) is connected to the intrinsically safe oil monitoring sensor via the explosion-proof through-wall terminal (6); The explosion-proof cavity (7) is equipped with a data acquisition board (8), an intrinsically safe power supply and a non-intrinsically safe power supply (10). The non-intrinsically safe power supply (10) is used to power the data acquisition board (8), and the intrinsically safe power supply is used to power the intrinsically safe oil monitoring sensor. The data acquisition board (8) is connected to the external terminal equipment and the other end of the explosion-proof through-wall terminal (6) respectively.

2. The online oil monitoring system according to claim 1, characterized in that, The explosion-proof cavity (7) is provided with at least two isolation safety barriers (11), and the data acquisition board (8) is connected to the external terminal equipment and the other end of the explosion-proof through-wall terminal (6) through at least two of the isolation safety barriers (11).

3. The online oil monitoring system according to claim 2, characterized in that, At least two of the aforementioned isolation safety barriers (11) are arranged in a horizontal direction.

4. The online oil monitoring system according to claim 2, characterized in that, The explosion-proof cavity (7) is also provided with a capacitor isolation plate (12), a gateway (13) and an intrinsically safe wireless communication module (14). The data acquisition board (8) is connected to the gateway (13) through the intrinsically safe wireless communication module (14). The gateway (13) is connected to the capacitor isolation plate (12). The capacitor isolation plate (12) is connected to the external terminal device.

5. The online oil monitoring system according to claim 2, characterized in that, At least two of the isolation safety barriers (11) include a first isolation safety barrier, the intrinsically safe RS485 interface of the data acquisition board (8) is connected to the first isolation safety barrier via a cable, and the first isolation safety barrier is connected to the external terminal device.

6. The online oil monitoring system according to claim 2, characterized in that, The explosion-proof cavity (7) is also provided with a gateway (13), and at least two of the isolation safety barriers (11) include a second isolation safety barrier. The data acquisition board (8) is connected to the gateway (13) via an Ethernet cable. The gateway (13) is connected to the second isolation safety barrier, and the second isolation safety barrier is connected to the external terminal device.

7. The online oil monitoring system according to claim 2, characterized in that, At least two of the isolation safety barriers (11) include an RS485 isolation safety barrier and an analog isolation safety barrier, and the explosion-proof through-wall terminal (6) is connected to the data acquisition board (8) through the RS485 isolation safety barrier and the analog isolation safety barrier, respectively.

8. The online oil monitoring system according to claim 1, characterized in that, The explosion-proof cavity (7) is also provided with a back plate (15), and the data acquisition board (8), the intrinsically safe power supply and the non-intrinsically safe power supply (10) are all provided on the back plate (15).

9. The online oil monitoring system according to claim 8, characterized in that, The back plate (15) is an insulating plate.

10. The online oil monitoring system according to any one of claims 1-9, characterized in that, The intrinsically safe oil monitoring sensor includes an intrinsically safe pressure sensor (3), a mining intrinsically safe oil metal particle sensor (4), and a mining intrinsically safe multi-parameter oil sensor (5). The mining intrinsically safe oil metal particle sensor (4) and the mining intrinsically safe multi-parameter oil sensor (5) are both located downstream of the intrinsically safe pressure sensor (3).

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