Oil leakage monitoring and alarming system based on sensitive pressure

Abstract

The utility model discloses an oil leakage monitoring and alarming system based on sensitive pressure, which comprises an oil leakage component, a resistive pressure-sensitive sensor is arranged below the oil leakage component, the pressure-sensitive sensor is electrically connected with a voltage conversion module, the voltage conversion module is electrically connected with a PLC module, and the PLC module is electrically connected with a monitoring and alarming module. The oil leakage monitoring device has the beneficial effects that the resistive thin film pressure-sensitive sensor module is adopted, different resistance values are sensed by receiving oil leakage gravity through a pressure-sensitive sensor, an analog quantity signal or a switching value signal is output to the monitoring terminal module, and the monitoring terminal module sends out an alarm signal when judging that an oil leakage fixed value is reached; the purposes of rapidly monitoring the oil leakage phenomenon and sending out an alarm signal are achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of oil leakage monitoring, and specifically relates to an oil leakage monitoring and alarm system based on sensitive pressure sensing. Background Art

[0002] At present, oil leakage monitoring alarms are basically reflected indirectly through oil level changes or oil leakage calculations. There are certain errors in the changes of oil level analog values, and the oil leakage calculation is based on the oil level analog value, which also has errors. The switch alarm generally has a low set value, and there is a problem of late discovery. The above reasons are not sensitive to small oil leaks, and the oil leak cannot be fed back in the first time. For oil leaks in some hidden locations, it is not easy to find them during on-site manual inspections. Utility Model Content

[0003] The purpose of this application is to provide an oil leakage monitoring and alarm system based on sensitive pressure sensing, which solves the problem of insensitive response to small oil leaks.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] An oil leakage monitoring and alarm system based on sensitive pressure sensing includes an oil leakage component, a resistive pressure-sensitive sensor is arranged below the oil leakage component, the pressure-sensitive sensor is electrically connected to a voltage conversion module, the voltage conversion module is electrically connected to a PLC module, and the PLC module is electrically connected to a monitoring and alarm module.

[0006] Furthermore, the pressure sensitive sensor is a resistive thin film pressure sensitive sensor.

[0007] Furthermore, the pressure sensitive sensor is a nano pressure sensitive material sensor, and the sensing range of the pressure sensitive sensor is 5 grams to 200 grams.

[0008] Furthermore, the pressure-sensitive sensors include a plurality of pressure-sensitive sensors, which are arranged in a comprehensive manner or in a planar networking arrangement.

[0009] Furthermore, the pressure sensitive sensor is powered by a power supply.

[0010] Furthermore, the power supply is connected in parallel with an air switch and a power monitoring relay, and the power monitoring relay is electrically connected to the PLC module.

[0011] Furthermore, the power supply voltage of the power supply is 3-10V.

[0012] Furthermore, the monitoring alarm module includes at least one of an alarm display screen, a light alarm and an acoustic alarm.

[0013] Furthermore, the bottom of the oil leaking component is the ground, the surface of the ground is a slope, a mounting groove is provided at the bottom of the slope, and a pressure sensitive sensor is provided in the mounting groove.

[0014] Furthermore, the oil leaking component is a pipeline and / or a valve group.

[0015] The beneficial effects of the present application are as follows: a resistive thin film pressure-sensitive sensor module is adopted, and different resistance values ​​are sensed by receiving the gravity of the oil leakage through the pressure-sensitive sensor, and an analog signal or a switch signal is output to the monitoring terminal module. The monitoring terminal determines that the oil leakage set value has been reached and sends out an alarm signal, thereby achieving the purpose of quickly monitoring the oil leakage phenomenon and sending out an alarm signal.

[0016] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the present scheme, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the circuit schematic diagram of the system of this application.

[0018] Figure 2 This is a schematic diagram of the system installation for this application.

[0019] Figure 3 It is a schematic diagram of the layout of pressure sensitive sensors.

[0020] In the figure: 1-pressure sensitive sensor, 2-voltage conversion module, 3-PLC module, 4-monitoring alarm module, 5-ground, 6-slope, 7-installation slot, 8-oil leakage component, 101-first sensor, 102-second sensor, n-nth sensor, QF-air switch, K1-power monitoring relay, VCC-power supply. DETAILED DESCRIPTION

[0021] The present application is further described below in conjunction with specific embodiments and drawings.

[0022] refer to Figure 1 to Figure 3 As shown, an oil leakage monitoring and alarm system based on sensitive pressure sensing includes a pressure-sensitive sensor 1, a voltage conversion module 2, a PLC module 3, a monitoring and alarm module 4, a ground 5, a slope 6, a mounting groove 7, an oil leakage component 8, an air switch QF, a power monitoring relay K1 and a power supply VCC.

[0023] A resistive pressure-sensitive sensor 1 is provided below the oil leakage component 8 . The pressure-sensitive sensor 1 is electrically connected to the voltage conversion module 2 . The voltage conversion module 2 is electrically connected to the PLC module 3 . The PLC module 3 is electrically connected to the monitoring alarm module 4 .

[0024] The pressure-sensitive sensor 1 is used to receive oil leakage. When the oil leakage accumulates on the pressure sensor, the change in external pressure causes the sensor resistance value to change. The voltage conversion module then converts the voltage change into a corresponding analog or switch signal and outputs it to the PLC module, and then outputs it to the monitoring and alarm module. The monitoring and alarm module sends out an oil leakage alarm signal, and the operation and maintenance personnel take timely measures based on the alarm signal.

[0025] The pressure-sensitive sensor 1 is a resistive thin-film pressure-sensitive sensor that uses nano-pressure-sensitive materials. The sensing range of the pressure-sensitive sensor 1 is 5 grams to 200 grams. This type of sensor can accurately and quickly determine small oil leaks, ensuring real-time monitoring and determination of oil leaks.

[0026] The pressure sensitive sensor 1 includes several sensors, such as a first sensor 101, a second sensor 102, ..., an nth sensor n. The pressure sensitive sensor 1 is arranged in a comprehensive manner or in a plane network according to the system on-site arrangement. The pressure sensitive sensor 1 is powered by a power supply VCC, and the power supply voltage of the power supply VCC is 3-10V.

[0027] The power supply VCC is connected in parallel (electrically connected) with an air switch QF and a power monitoring relay K1. The air switch is used to control the on and off of the circuit and protect the circuit. The power monitoring relay K1 is electrically connected to the PLC module 3. When the power is lost, the normally open contact of the power monitoring relay K1 is closed, and the PLC module sends the power failure signal to the monitoring alarm module. The operation and maintenance personnel will check and handle the monitoring device in time according to the alarm signal.

[0028] The monitoring alarm module 4 includes at least one of an alarm display screen, a light alarm and a sound alarm, which can promptly and effectively remind the operation and maintenance personnel of the oil leakage information.

[0029] The oil leakage component 8 is a pipeline and / or a valve group. Below the oil leakage component 8 is the ground 5. The surface of the ground 5 is a slope 6. The slope 6 enables the leaked oil to slide down. The bottom of the slope 6 is provided with an installation groove 7. The installation groove 7 collects the leaked oil. A pressure-sensitive sensor 1 is provided in the installation groove 7.

[0030] The workflow of this application is as follows: When oil leakage occurs in a pipeline or valve group in a certain area, the oil first drips onto the ground and then converges to the installation groove of the pressure-sensitive sensor along the slope of the ground. The resistance value of the pressure-sensitive sensor changes after being pressurized. The voltage conversion module converts the pressure signal into a corresponding electrical signal and outputs the perceived weight analog value to the PLC in real time. The PLC sends the analog value to the monitoring terminal.

[0031] The monitoring terminal is set with an alarm threshold. When the analog value exceeds the threshold, the monitoring terminal reports an oil leakage alarm in the area. When the operation and maintenance personnel monitor the alarm signal, they immediately go to the site for disposal and inspection. After the disposal is completed, the oil accumulated on the sensor is cleaned and the alarm signal is restored.

[0032] This application utilizes the configuration of pressure-sensitive sensors to conduct all-round real-time monitoring and alarm of oil system pipeline leaks, helping operation and maintenance personnel to quickly discover and locate oil leaks and ensure safe and stable operation of equipment. At the same time, timely detection of oil leaks can avoid environmental pollution caused by large-scale oil leakage.

[0033] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An oil leakage monitoring and alarm system based on sensitive pressure sensing, comprising an oil leakage component (8), characterized in that: A resistive pressure-sensitive sensor (1) is provided below the oil leakage component (8); the pressure-sensitive sensor (1) is electrically connected to a voltage conversion module (2); the voltage conversion module (2) is electrically connected to a PLC module (3); and the PLC module (3) is electrically connected to a monitoring alarm module (4).

2. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 is characterized in that: The pressure-sensitive sensor (1) is a resistive thin-film pressure-sensitive sensor.

3. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 or 2 is characterized in that: The pressure-sensitive sensor (1) is a nano-pressure-sensitive material sensor, and the sensing range of the pressure-sensitive sensor (1) is 5 grams to 200 grams.

4. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 is characterized in that: The pressure-sensitive sensors (1) include a plurality of pressure-sensitive sensors (1), which are arranged in a comprehensive manner or in a plane-based networking arrangement.

5. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 is characterized in that: The pressure-sensitive sensor (1) is powered by a power supply (VCC).

6. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 5 is characterized in that: The power supply (VCC) is connected in parallel with an air switch (QF) and a power supply monitoring relay (K1), and the power supply monitoring relay (K1) is electrically connected to a PLC module (3).

7. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 5 or 6 is characterized in that: The power supply voltage of the power supply (VCC) is 3-10V.

8. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 is characterized in that: The monitoring alarm module (4) comprises at least one of an alarm display screen, a light alarm and an acoustic alarm.

9. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 is characterized in that: The lower part of the oil leakage component (8) is the ground (5), the surface of the ground (5) is a slope (6), the bottom of the slope (6) is provided with a mounting groove (7), and the mounting groove (7) is provided with a pressure-sensitive sensor (1).

10. The oil leakage monitoring and alarm system based on sensitive pressure sensing according to claim 1 or 9, characterized in that: The oil leakage component (8) is a pipeline and / or a valve group.

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