Online monitoring and collecting instrument for mining oil liquid

Abstract

The utility model provides a mining oil liquid on-line monitoring and collecting instrument which comprises an explosion-proof box body, an intrinsic safety cavity, an explosion-proof cavity, an intrinsic safety cavity device and an explosion-proof cavity device, wherein the intrinsic safety cavity and the explosion-proof cavity are arranged on the inner side of the explosion-proof box body and are isolated from each other, and the intrinsic safety cavity device and the explosion-proof cavity device are respectively arranged in the intrinsic safety cavity. The explosion-proof box body is provided with an oil inlet and an oil outlet which are formed by penetrating through the cavity wall of the intrinsic safety cavity, the intrinsic safety cavity device comprises a detection oil way and an intrinsic safety detection sensor group, oil to be detected enters the detection oil way from the oil inlet and is detected through direct contact of the intrinsic safety detection sensor group, and the intrinsic safety detection sensor group is connected with the explosion-proof box body. The oil to be detected flows out of the oil outlet after being detected by the intrinsic safety detection sensor group; the explosion-proof cavity comprises an intrinsically safe power supply, and the intrinsically safe power supply is used for supplying power to the intrinsically safe detection sensor group. The acquisition instrument disclosed by the utility model can be used for realizing oil liquid detection and also can meet the anti-explosion requirement at the same time.

Description

Technical Field

[0001] The utility model is applicable to the technical field of oil fluid monitoring, and particularly relates to an on-line monitoring and collecting instrument for mine oil fluid. Background Art

[0002] The on-line monitoring and collecting instrument for oil fluid can perform real-time detection on the lubricating oil of mechanical equipment. It is installed on the lubricating oil tank of mechanical equipment or on the lubricating circulation pipeline, and is connected to the mechanical equipment oil tank or the circulating oil circuit through an oil pipe. The lubricating oil is pumped from the monitoring point into the on-line monitoring and collecting instrument for oil fluid through a pump, and parameters such as viscosity, moisture, and wear particles of the lubricating oil are detected. After the detection of the oil fluid is completed, the oil fluid is pumped back to the mechanical equipment by a micro pump.

[0003] The existing on-line monitoring and collecting instruments for oil fluid often target ordinary industrial environments and are not applicable to working conditions in explosive gas environments such as gas. On the other hand, the oil fluid is a substance in the external environment. The direct entry of the oil fluid into the explosion-proof box will cause the explosion-proof form to fail. However, the on-line monitoring and collecting instrument for oil fluid must have the oil fluid enter the instrument to complete the oil fluid detection. It is difficult for the existing on-line monitoring devices for mine oil fluid to solve this design difficulty. Summary of the Utility Model

[0004] The utility model provides an on-line monitoring and collecting instrument for mine oil fluid, aiming to solve the problem that the explosion-proof of the existing on-line monitoring and collecting instrument for oil fluid fails due to the oil circuit passing through the explosion-proof box.

[0005] To solve the above technical problems, the utility model provides an on-line monitoring and collecting instrument for mine oil fluid. The on-line monitoring and collecting instrument for mine oil fluid includes an explosion-proof box body, an intrinsically safe cavity and an explosion-proof cavity which are mutually isolated and arranged on the inner side of the explosion-proof box body, and an intrinsically safe cavity device arranged in the intrinsically safe cavity and an explosion-proof cavity device arranged in the explosion-proof cavity respectively. The explosion-proof box body is provided with an oil inlet and an oil outlet formed by penetrating the cavity wall of the intrinsically safe cavity. The intrinsically safe cavity device includes a detection oil circuit and an intrinsically safe detection sensor group. The oil fluid to be detected enters the detection oil circuit from the oil inlet and is directly detected by contacting the intrinsically safe detection sensor group. After the oil fluid to be detected is detected by the intrinsically safe detection sensor group, it flows out from the oil outlet. The explosion-proof cavity includes an intrinsically safe power supply, and the intrinsically safe power supply is used to supply power to the intrinsically safe detection sensor group.

[0006] Furthermore, the on-line monitoring and collecting instrument for mine oil fluid further includes an intrinsically safe cavity cover respectively used for covering the intrinsically safe cavity and an explosion-proof cavity cover used for covering the explosion-proof cavity.

[0007] Furthermore, the intrinsically safe detection sensor group includes a wear sensor, a moisture sensor and a viscosity sensor.

[0008] Furthermore, the detection oil path is a vertical U-shaped structure. The intrinsically safe detection sensor group is arranged at the lower position of the U-shaped structure of the detection oil path. After the oil to be detected passes through the detection oil path, it sequentially passes through the wear sensor, the moisture sensor, and the viscosity sensor for detection.

[0009] Furthermore, the intrinsically safe detection sensor group is arranged on the side of the detection oil path, and the direction of the oil to be detected passing through the wear sensor is consistent with the direction of gravity.

[0010] Furthermore, the intrinsically safe cavity device further includes a first intrinsically safe terminal block for electrically connecting with the intrinsically safe detection sensor group. The explosion-proof cavity device further includes a second intrinsically safe terminal block for electrically connecting with the intrinsically safe power supply. The cavity wall of the explosion-proof cavity is provided with an explosion-proof through-wall terminal leading to the intrinsically safe cavity, and the second intrinsically safe terminal block is electrically connected to the first intrinsically safe terminal block via the explosion-proof through-wall terminal.

[0011] Furthermore, the explosion-proof cavity device further includes a non-safe power supply and a solid-state relay, and the non-safe power supply and the solid-state relay are used to supply power to and provide control for external devices.

[0012] Furthermore, the explosion-proof box body is further provided with a first signal interface, a second signal interface, a first power interface, and a second power interface penetrating through the cavity wall of the explosion-proof cavity. The first signal interface is electrically connected to the second intrinsically safe terminal block to transmit the signals of the intrinsically safe detection sensor group. The second signal interface is electrically connected to the solid-state relay to control external devices. The first power interface is electrically connected to the intrinsically safe power supply to access the external main power supply. The second power interface is electrically connected to the non-safe power supply to output power for external devices.

[0013] Furthermore, the explosion-proof cavity device further includes a non-safe terminal block for electrically connecting with external devices to transmit control signals.

[0014] Furthermore, the cavity walls of the intrinsically safe cavity and the explosion-proof cavity are both made of 304 stainless steel. The wall thickness of the intrinsically safe cavity is 2 mm, and the wall thickness of the explosion-proof cavity is 6 mm.

[0015] The beneficial effects achieved by the present utility model are as follows: An on-line monitoring and acquisition instrument for mine oil fluid with an intrinsically safe cavity and an explosion-proof cavity isolated from each other is proposed. The oil path of the acquisition instrument does not pass through the explosion-proof cavity, the power supply is separated from the detection sensor, and at the same time, a variety of sensors are integrated with intrinsically safe and non-safe power supplies, which can supply power to and control external devices while realizing oil fluid detection and meet the explosion-proof requirements. Description of the Drawings

[0016] Figure 1It is a schematic diagram of the overall structure of the on-line monitoring and acquisition instrument for mine oil fluid provided by the embodiment of the present utility model;

[0017] Figure 2 It is a partial exploded view of the on-line monitoring and acquisition instrument for mine oil fluid provided by the embodiment of the present utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the on-line monitoring and acquisition instrument for mine oil fluid provided by the embodiment of the present utility model. Detailed implementation manners

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please also refer to Figures 1 to 3 The present utility model provides an on-line monitoring and acquisition instrument 100 for mine oil fluid. The on-line monitoring and acquisition instrument 100 for mine oil fluid includes an explosion-proof box body 1, an intrinsically safe cavity 11 and an explosion-proof cavity 12 which are arranged inside the explosion-proof box body and isolated from each other, and an intrinsically safe cavity device 2 arranged in the intrinsically safe cavity 11 and an explosion-proof cavity device 3 arranged in the explosion-proof cavity 12. The explosion-proof box body 1 is provided with an oil inlet 13 and an oil outlet 14 formed by penetrating the cavity wall of the intrinsically safe cavity. The intrinsically safe cavity device 2 includes a detection oil circuit 21 and an intrinsically safe detection sensor group 22. The oil to be detected enters the detection oil circuit 21 from the oil inlet 13 and is directly detected by contacting the intrinsically safe detection sensor group 22. After the oil to be detected is detected by the intrinsically safe detection sensor group 22, it flows out from the oil outlet 14. The explosion-proof cavity device 3 includes an intrinsically safe power supply 31, and the intrinsically safe power supply 31 is used to supply power to the intrinsically safe detection sensor group 22.

[0021] Both the intrinsically safe cavity 11 and the explosion-proof cavity 12 are made of 304 stainless steel. During actual manufacturing, the intrinsically safe cavity 11 and the explosion-proof cavity 12 can be manufactured separately and then welded into a structural whole. From the appearance, it is still a complete box body.

[0022] The on-line monitoring and acquisition instrument 100 for mine oil fluid further includes an intrinsically safe cavity cover 4 for covering the intrinsically safe cavity 11 and an explosion-proof cavity cover 5 for covering the explosion-proof cavity 12. To meet the standard of IP65 protection level, sealing ring grooves are designed between the intrinsically safe cavity cover 4 and the explosion-proof cavity cover 5 and the upper and lower covers of the explosion-proof box body 1, and rubber sealing rings are installed.

[0023] The intrinsically safe detection sensor group 22 includes a wear sensor 221, a moisture sensor 222 and a viscosity sensor 223.

[0024] The detection oil circuit 21 is a vertical U-shaped structure. The intrinsically safe detection sensor group 22 is arranged at the lower position of the U-shaped structure of the detection oil circuit. After the oil to be detected passes through the detection oil circuit 21, it successively passes through the wear sensor 221, the moisture sensor 222, and the viscosity sensor 223 for detection. The sensors at the lower position of the U-shaped structure ensure that the sensor area is always filled with oil, preventing the phenomenon that the oil level is insufficient and the sensor probe cannot contact the oil, and also preventing the situation that the oil flows to the lower part and empties after the pump stops, resulting in the sensor not being able to touch the oil.

[0025] The intrinsically safe detection sensor group 22 is arranged on the side of the detection oil circuit 21. The direction of the oil to be detected passing through the wear sensor 221 is consistent with the direction of gravity, avoiding the formation of eddy currents. In the U-shaped oil circuit, the oil flows upward through the oil circuit block, and the air bubbles will automatically float up and finally flow out along the pipeline direction, preventing the air bubbles from gathering at the top of the sensor and affecting the monitoring.

[0026] The intrinsically safe cavity device 2 further includes a first intrinsically safe terminal block 23 for electrically connecting with the intrinsically safe detection sensor group 22. The explosion-proof cavity device 3 further includes a second intrinsically safe terminal block 32 for electrically connecting with the intrinsically safe power supply 31. The cavity wall of the explosion-proof cavity 12 is provided with an explosion-proof through-wall terminal 121 leading to the intrinsically safe cavity. The second intrinsically safe terminal block 32 is electrically connected to the first intrinsically safe terminal block 23 via the explosion-proof through-wall terminal 121.

[0027] It can be understood that the three sensors arranged in the intrinsically safe cavity 11 are all intrinsically safe sensors. The oil can directly contact the intrinsically safe sensors. On the other side is the explosion-proof cavity 12. The left and right two cavities are separated by a stainless steel plate in the middle. The sensor cables enter the explosion-proof cavity 12 through the explosion-proof through-wall terminals 121. The left intrinsically safe cavity 11 and the right explosion-proof cavity 12 are respectively covered with two lids, so as to achieve complete isolation between the intrinsically safe cavity 11 and the explosion-proof cavity 12. The oil only flows through part of the intrinsically safe cavity 11 and is completely separated from the electrical components in the explosion-proof cavity 12 on the other side, thus meeting the explosion-proof requirements.

[0028] The explosion-proof cavity device 3 further includes a non-safe power supply 33 and a solid-state relay 34, which are used to supply power to external devices and provide control. Since the embodiment of the present invention designs an on-line monitoring and acquisition instrument for mine oil, the external devices here refer to devices such as pumps and analysis hosts (for analyzing sensor signals) to complete the on-line monitoring work of the oil.

[0029] The explosion-proof housing 1 is further provided with a first signal interface 15, a second signal interface 16, a first power interface 17, and a second power interface 18 that penetrate the chamber wall of the explosion-proof chamber 12. The first signal interface 15 is electrically connected to the second intrinsically safe terminal block 32 to transmit the signals of the intrinsically safe detection sensor group 22. The second signal interface 16 is electrically connected to the solid-state relay 34 to control external devices. The first power interface 17 is electrically connected to the intrinsically safe power supply 31 to access the external main power supply. The second power interface 18 is electrically connected to the non-safe power supply 33 to output power for external devices.

[0030] The acquisition instrument in the embodiment of the present invention requires pumping oil by a pump for detection. Usually, the transmission capacity of the pump is limited by distance. The farther the distance, the more difficult it is to pump oil by the pump, and the reduction in flow rate will also affect the sensor monitoring. The pump usually needs to draw oil from the oil circuit close to the sensor, so as to shorten the transmission distance. However, the pump requires 24V DC power supply and also requires signal control for starting and stopping. In the past, the pump power supply and the pump control signal line needed to be pulled to a very far electrical control cabinet for power supply and control. The problems of voltage drop and signal attenuation reappeared due to the long distance. In the explosion-proof chamber of the on-line monitoring and acquisition instrument 100 for mine oil fluid in the embodiment of the present invention, a non-safe power supply 33 (which can use 24V power supply) and a solid-state relay 34 are arranged. The pump is installed beside the acquisition instrument and can directly access the 24V power through the second signal interface 16 and the second power interface 18 into the explosion-proof chamber of the acquisition instrument, and the starting and stopping of the pump can be controlled through the solid-state relay 34, greatly shortening the transmission distance.

[0031] The explosion-proof chamber device 3 further includes a non-safe terminal block 35 for electrically connecting to external devices to transmit control signals.

[0032] In the embodiment of the present invention, the wall thickness of the intrinsically safe chamber is 2mm, which is beneficial to reducing the weight. The wall thickness of the explosion-proof chamber is 6mm ( Figure 3 the shaded area in it is the explosion-proof surface), meeting the explosion-proof requirements.

[0033] The beneficial effects achieved by the present invention are that an on-line monitoring and acquisition instrument for mine oil fluid with an intrinsically safe chamber and an explosion-proof chamber isolated from each other is proposed. The oil circuit of the acquisition instrument does not pass through the explosion-proof chamber, the power supply is separated from the detection sensor, and at the same time, multiple sensors are integrated with intrinsically safe and non-safe power supplies, which can not only realize oil fluid detection but also supply power and control external devices, and meet the explosion-proof requirements.

[0034] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such an element.

[0035] The embodiments of the present utility model have been described above in conjunction with the accompanying drawings. What is disclosed is only the preferred embodiments of the present utility model. However, the present utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present utility model, those of ordinary skill in the art can also make many equivalent changes in form without departing from the purpose of the present utility model and the scope protected by the claims, and all of them fall within the protection scope of the present utility model.

Claims

1. An on-line monitoring and acquisition instrument for mineral oil fluid, characterized in that The on-line monitoring and acquisition instrument for mine oil fluid includes an explosion-proof box body, an intrinsically safe cavity, an explosion-proof cavity that are isolated from each other and arranged inside the explosion-proof box body, and intrinsically safe cavity devices arranged in the intrinsically safe cavity and explosion-proof cavity devices arranged in the explosion-proof cavity respectively. The explosion-proof box body is provided with an oil inlet and an oil outlet formed by penetrating the cavity wall of the intrinsically safe cavity. The intrinsically safe cavity devices include a detection oil circuit and an intrinsically safe detection sensor group. The oil fluid to be detected enters the detection oil circuit from the oil inlet and is directly detected by passing through the intrinsically safe detection sensor group. After the oil fluid to be detected is detected by the intrinsically safe detection sensor group, it flows out from the oil outlet. The explosion-proof cavity includes an intrinsically safe power supply, and the intrinsically safe power supply is used to supply power to the intrinsically safe detection sensor group.

2. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 1, characterized in that The on-line monitoring and acquisition instrument for mine oil fluid further includes an intrinsically safe cavity cover for covering the intrinsically safe cavity and an explosion-proof cavity cover for covering the explosion-proof cavity respectively.

3. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 1, characterized in that The intrinsically safe detection sensor group includes a wear sensor, a moisture sensor and a viscosity sensor.

4. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 3, characterized in that, The detection oil circuit is a vertical U-shaped structure, and the intrinsically safe detection sensor group is arranged at the low position of the U-shaped structure of the detection oil circuit. After the oil fluid to be detected passes through the detection oil circuit, it passes through the wear sensor, the moisture sensor and the viscosity sensor in sequence for detection.

5. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 4, wherein The intrinsically safe detection sensor group is arranged on the side of the detection oil circuit, and the direction of the oil fluid to be detected passing through the wear sensor is consistent with the direction of gravity.

6. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 1, wherein, The intrinsically safe cavity devices further include a first intrinsically safe terminal block for electrically connecting with the intrinsically safe detection sensor group, and the explosion-proof cavity devices further include a second intrinsically safe terminal block for electrically connecting with the intrinsically safe power supply. The cavity wall of the explosion-proof cavity is provided with an explosion-proof through-wall terminal leading to the intrinsically safe cavity, and the second intrinsically safe terminal block is electrically connected with the first intrinsically safe terminal block via the explosion-proof through-wall terminal.

7. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 6, characterized in that, The explosion-proof cavity devices further include a non-safe power supply and a solid-state relay, and the non-safe power supply and the solid-state relay are used to supply power to and provide control for external devices.

8. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 7, characterized in that, The explosion-proof box body is further provided with a first signal interface, a second signal interface, a first power interface and a second power interface that penetrate the cavity wall of the explosion-proof cavity. The first signal interface is electrically connected with the second intrinsically safe terminal block to transmit the signals of the intrinsically safe detection sensor group. The second signal interface is electrically connected with the solid-state relay to control external devices. The first power interface is electrically connected with the intrinsically safe power supply to access the external main power supply. The second power interface is electrically connected with the non-safe power supply to output power for external devices.

9. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 7, wherein, The explosion-proof cavity devices further include a non-safe terminal block for electrically connecting with external devices to transmit control signals.

10. The on-line monitoring and acquisition instrument for mine oil fluid according to claim 1, characterized in that The cavity walls of the intrinsically safe cavity and the explosion-proof cavity are both made of 304 stainless steel. The wall thickness of the intrinsically safe cavity is 2 mm, and the wall thickness of the explosion-proof cavity is 6 mm.

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