Gas manhole monitoring equipment

Abstract

The utility model relates to the technical field of gas leakage monitoring, and in particular to a gas manhole monitoring device, comprising: a mounting shell, a laser methane sensor, a radar liquid level sensor, a processing circuit board and a liquid level alarm electrode, wherein the processing circuit board is mounted on the inner top of the mounting shell, the mounting shell is divided into an inner mounting area and a vent channel, the inner mounting area and the vent channel are sealed with each other, the laser methane sensor is mounted on the top of the vent channel, the radar liquid level sensor is mounted in the inner mounting area, the liquid level alarm electrode is mounted on the bottom of the mounting shell, and the laser methane sensor, the radar liquid level sensor and the liquid level alarm electrode are all connected to the processing circuit board. The utility model uses a laser methane sensor and a radar liquid level sensor to perform methane detection and liquid level detection, and when the liquid level is too high and the radar liquid level sensor cannot function, the liquid level alarm electrode is used to perform a liquid level limit alarm.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage monitoring, in particular to a gas manhole monitoring device. Background Art

[0002] Gas wells are usually located in residential areas, commercial areas or roadsides. Therefore, if gas well valves or pipelines leak, there will be huge safety hazards. For example, gas leaks are prone to poisoning, combustion, explosion, etc.; for example, the accumulation of rainwater in the well causes rust on internal valves and pipelines; for example, the gas well cover is innocently opened and buried. For this reason, it is necessary to monitor the gas wells. The existing monitoring equipment used in gas wells is generally incomplete and can only detect methane gas. However, gas wells are often flooded, so the liquid level needs to be detected. Summary of the invention

[0003] The utility model provides a gas manhole monitoring device to solve the technical problems existing in the background technology.

[0004] The technical solution of the utility model is as follows: A gas manhole monitoring device, comprising: an installation shell, a laser methane sensor, a radar liquid level sensor, a processing circuit board and a liquid level alarm electrode, the processing circuit board is installed at the inner top of the installation shell, the installation shell is divided into an internal installation area and a gas permeable channel, the internal installation area and the gas permeable channel are sealed with each other, the laser methane sensor is installed at the top of the gas permeable channel, the radar liquid level sensor is installed in the internal installation area, the liquid level alarm electrode is installed at the bottom of the installation shell, and the laser methane sensor, radar liquid level sensor and liquid level alarm electrode are all connected to the processing circuit board.

[0005] Furthermore, the installation shell includes an upper shell and a lower shell, the central area of ​​the lower shell is a ventilation channel, the internal installation area surrounds the ventilation channel, and the upper shell and the lower shell are connected by fixing bolts.

[0006] Furthermore, a fixing hole is provided on the edge of the upper shell.

[0007] Furthermore, a signal antenna is disposed on the back of the processing circuit board.

[0008] Furthermore, a light guide hole is provided on the mounting shell, a photosensitive sensor is provided at the end of the light guide hole, and the photosensitive sensor is connected to a processing circuit board.

[0009] Furthermore, a power supply battery is installed in the internal installation area, and the power supply battery is used to supply power to the laser methane sensor, the radar liquid level sensor, the processing circuit board and the liquid level alarm electrode.

[0010] Furthermore, the liquid level alarm electrode includes a receiving electrode and a transmitting electrode, both of which are exposed from the bottom of the mounting shell, the transmitting electrode is connected to a signal generating circuit, and the receiving electrode is connected to the processing circuit board.

[0011] Furthermore, a communication module, a processor module and a signal processing module are provided on the processing circuit board. The communication module and the signal processing module are both communicatively connected to the processor module. The signal processing module is used to process and convert the signals of the laser methane sensor, the radar liquid level sensor and the liquid level alarm electrode and transmit them to the processor module. The processor module determines the methane concentration according to the signal of the laser methane sensor and can determine the current liquid level according to the signals of the radar liquid level sensor and the liquid level alarm electrode. The processor module communicates with external devices through the communication module.

[0012] The beneficial effects of the utility model are as follows: the utility model uses a laser methane sensor and a radar liquid level sensor to detect methane and liquid level. When the liquid level is too high and the radar liquid level sensor cannot work, a liquid level alarm electrode is used to perform a liquid level limit alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a bottom view of the utility model. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0016] In one embodiment of the present invention, Figure 1 and Figure 2 This is a structural schematic diagram provided according to the specific structure of a gas manhole monitoring device of the utility model, such as Figure 1 and Figure 2As shown, the utility model includes: a mounting shell, a laser methane sensor 3, a radar liquid level sensor 4, a processing circuit board 5 and a liquid level alarm electrode 9, wherein the processing circuit board 5 is mounted at the inner top end of the mounting shell, and the mounting shell is divided into an internal mounting area and a ventilation channel 10, wherein the internal mounting area and the ventilation channel 10 are sealed with each other, the laser methane sensor 3 is mounted at the top end of the ventilation channel 10, the radar liquid level sensor 4 is mounted in the internal mounting area, the liquid level alarm electrode 9 is mounted at the bottom of the mounting shell, and the laser methane sensor 3, the radar liquid level sensor 4 and the liquid level alarm electrode 9 are all connected to the processing circuit board 5.

[0017] The processing circuit board 5 may specifically be a PCBA mainboard, and the processing circuit board has a communication function and can communicate with external devices or an Internet of Things platform.

[0018] Among them, the laser methane sensor 3 is used to detect the methane gas content in the gas manhole. When the laser methane sensor 3 detects methane through the air permeable channel 10, it is identified as a methane leak. The processing circuit board 5 can control the collection frequency of the laser methane sensor 3, and can send the field data to the Internet of Things platform in real time and issue an early warning. The real-time data and installation points can be viewed through computers, mobile phones, etc.

[0019] The radar level sensor 4 is used to detect the liquid level in the gas manhole. The liquid level alarm electrode 9 is used to alarm the liquid level when the radar level sensor 4 fails to function. The specific principle is as follows:

[0020] When there is liquid in the manhole, mainly rainwater, the radar level sensor 4 collects the liquid level changes and transmits the data to the Internet of Things platform through the processing circuit board 5. Due to the principle problem of the radar level sensor 4, there is a monitoring blind spot problem. When the distance between the liquid level and the radar level sensor 4 is less than 3CM, it will not work. At this time, the liquid level alarm electrode will be immersed in water, the liquid level alarm electrode will be turned on, the processing circuit board 5 will receive the signal, and send an alarm signal to the Internet of Things platform to remind that the liquid level in the gas manhole is too high.

[0021] The installation shell of the utility model is waterproofed, and the protection level reaches IP68 level 1 meter underwater for 7 days. When flooded, since the internal installation area and the air permeable channel 10 are sealed and isolated from each other, some gas will remain in the air permeable channel 10, which will be compressed by the liquid and remain between the laser methane sensor and the liquid surface, forming a relative pressure, preventing the liquid from submerging the laser methane sensor 3, and preventing the sensor from being damaged by long-term immersion.

[0022] The installation shell of the utility model is made of MC nylon / 316 stainless steel, which is a high-performance material with corrosion resistance, high temperature resistance, acid and alkali resistance, which greatly increases its indoor and outdoor service life.

[0023] In one embodiment of the utility model, the installation shell includes an upper shell 1 and a lower shell 2, the central area of ​​the lower shell 2 is a breathable channel 10, the internal installation area surrounds the breathable channel, the upper shell 1 and the lower shell 2 are connected by fixing bolts 1111, and the fixing bolts 1111 lock the upper shell 1 and the lower shell 2. The edge of the upper shell 1 is provided with a fixing hole 12, and the device is installed on the top of the manhole through the fixing hole. Specifically, the equipment is installed vertically, fixed through the fixing hole 12, and the breathable channel 10 is kept downward in the manhole. It is generally installed in the center of the manhole cover and the manhole cover is covered.

[0024] In the embodiment of the utility model, a signal antenna 6 is provided on the back of the processing circuit board 5, and the signal antenna 6 is used for the processing circuit board 5 to communicate with the Internet of Things platform. The specific circuit of the processing circuit board 5 is as follows:

[0025] The processing circuit board is provided with a communication module, a processor module and a signal processing module. The communication module and the signal processing module are both communicatively connected to the processor module. The signal processing module is used to process and convert the signals of the laser methane sensor 3, the radar liquid level sensor 4 and the liquid level alarm electrode 9 and transmit them to the processor module. The processor module determines the methane concentration according to the signal of the laser methane sensor 3 and can determine the current liquid level according to the signals of the radar liquid level sensor 4 and the liquid level alarm electrode 9. The processor module communicates with external devices through the communication module.

[0026] Among them, the communication module can adopt a 4 / 5G communication module to achieve remote communication through antenna cooperation, the processor module can adopt an MCU, etc., and the signal processing module adopts an analog-to-digital conversion circuit. The above modules are all existing technologies, so they will not be repeated here.

[0027] In one embodiment of the utility model, a light guide hole 8 is provided on the mounting housing, and a photosensitive sensor is provided at the end of the light guide hole, and the photosensitive sensor is connected to the processing circuit board 5. When the manhole cover is covered, the light introduced by the light guide column 8 will become darker, and the light collected by the photosensitive sensor will decrease. After the processing circuit board 5 determines the light change, it will upload the alarm information to the Internet of Things platform in real time for flood warning.

[0028] In one embodiment of the utility model, a power supply battery 7 is installed in the internal installation area, and the power supply battery 7 is used to supply power to the laser methane sensor 3, the radar liquid level sensor 4, the processing circuit board 5 and the liquid level alarm electrode 9.

[0029] In one embodiment of the utility model, the liquid level alarm electrode 9 includes a receiving electrode and a transmitting electrode, both of which are exposed from the bottom of the mounting shell, the transmitting electrode is connected to the signal generating circuit, and the receiving electrode is connected to the processing circuit board 5.

[0030] Among them, the signal generating circuit is used to send out a current signal. After the liquid level rises, the receiving electrode and the transmitting electrode are immersed in water to form a loop. The current signal received by the receiving electrode is sent to the processing circuit board. After receiving the current signal, the processing circuit board sends an alarm signal to the Internet of Things platform to remind that the liquid level in the gas manhole is too high. The signal generating circuit is a conventional technical means, so it will not be repeated here.

[0031] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gas manhole monitoring device, characterized in that: include: A mounting shell, a laser methane sensor (3), a radar liquid level sensor (4), a processing circuit board (5), and a liquid level alarm electrode (9), wherein the processing circuit board (5) is mounted on the top of the interior of the mounting shell, and the mounting shell is divided into an internal mounting area and a gas permeable channel (10), wherein the internal mounting area and the gas permeable channel (10) are sealed with each other, the laser methane sensor (3) is mounted on the top of the gas permeable channel (10), the radar liquid level sensor (4) is mounted in the internal mounting area, and the liquid level alarm electrode (9) is mounted on the bottom of the mounting shell, and the laser methane sensor (3), the radar liquid level sensor (4), and the liquid level alarm electrode (9) are all connected to the processing circuit board (5).

2. The gas manhole monitoring device according to claim 1, characterized in that: The installation shell comprises an upper shell (1) and a lower shell (2); the central area of ​​the lower shell (2) is a ventilation channel (10); the internal installation area surrounds the ventilation channel; and the upper shell (1) and the lower shell (2) are connected by fixing bolts (11).

3. The gas manhole monitoring device according to claim 2, characterized in that: The edge of the upper shell (1) is provided with a fixing hole (12).

4. The gas manhole monitoring device according to claim 1, characterized in that: A light guide hole (8) is provided on the mounting housing, a photosensitive sensor is provided at the end of the light guide hole, and the photosensitive sensor is connected to the processing circuit board (5).

5. The gas manhole monitoring device according to claim 1, characterized in that: A power supply battery (7) is installed in the internal installation area, and the power supply battery (7) is used to supply power to the laser methane sensor (3), the radar liquid level sensor (4), the processing circuit board (5), and the liquid level alarm electrode (9).

6. The gas manhole monitoring device according to claim 1, characterized in that: The liquid level alarm electrode (9) comprises a receiving electrode and a transmitting electrode, both of which are exposed from the bottom of the mounting housing, the transmitting electrode is connected to a signal generating circuit, and the receiving electrode is connected to the processing circuit board (5).

7. The gas manhole monitoring device according to claim 1, characterized in that: The processing circuit board is provided with a communication module, a processor module and a signal processing module. The communication module and the signal processing module are both in communication connection with the processor module. The signal processing module is used to process and convert the signals of the laser methane sensor (3), the radar liquid level sensor (4) and the liquid level alarm electrode (9) and transmit them to the processor module. The processor module determines the methane concentration according to the signal of the laser methane sensor (3) and can determine the current liquid level according to the signals of the radar liquid level sensor (4) and the liquid level alarm electrode (9). The processor module communicates with external equipment via the communication module.

8. The gas manhole monitoring device according to claim 7, characterized in that: A signal antenna (6) is provided on the back of the processing circuit board (5).

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