Multifunctional gas leakage detector

Abstract

The utility model provides a multifunctional gas leakage detector which comprises a detector body which is in communication connection with a gas detection module and an infrared thermal imager. The fuel gas detection module is used for detecting the fuel gas concentration; and the infrared thermal imager is used for positioning a leakage point of the pipeline at night. The fuel gas detection module can directly measure the concentration of fuel gas in the environment and quickly identify whether the fuel gas leaks or not, and the infrared thermal imager can accurately position a leakage source through temperature difference at night or under the condition that the visual condition is poor, so that the leakage of the fuel gas is avoided. The combination of the two enables the detection of the gas leakage to be efficient even in an environment with a limited sight line.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a multifunctional gas leakage detector. Background Art

[0002] As a clean energy, natural gas will gradually replace traditional coal energy. In this process, problems such as gas pipeline leakage are also constantly occurring, which poses certain safety risks. Therefore, it is particularly important to inspect natural gas pipelines. Therefore, the demand for gas leak detectors is increasing. Most of the existing gas leak detectors can only detect and alarm gas concentration, and realize simple inspection route recording and data upload. For the detection in the gas well, personnel need to go down to the well for inspection, which has great safety hazards; it is impossible to quickly locate the leakage point when inspecting the ground pipeline at night. Therefore, it is of great practical value to develop a multifunctional gas leak detector. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a multifunctional gas leak detector.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] A multifunctional gas leak detector, comprising:

[0006] The detector body is respectively connected to the gas detection module and the infrared thermal imager 11 for communication; the gas detection module is used to detect the gas concentration; the infrared thermal imager 11 is used to locate the leakage point of the pipeline at night.

[0007] Preferably, the detector body comprises: a shell 4, wherein the shell 4 contains a cavity, and a PCB board is arranged in the cavity; the PCB board is communicatively connected with the gas detection module and the infrared thermal imager 11 respectively.

[0008] Preferably, the gas detection module comprises:

[0009] A first gas sensor 1, wherein one end of the first gas sensor 1 is connected to one end of a metal hose 2, and the other end of the metal hose 2 is disposed on the housing 4;

[0010] The second gas sensor 10 has one end connected to one end of the long hose 9 , and the other end of the long hose 9 is detachably connected to the gas sensor interface 8 on the housing 4 .

[0011] Preferably, an LCD display screen 5 and a button 6 are provided on the front side; the LCD display screen 5 and the button 6 are both communicatively connected to the PCB board, the LCD display screen 5 is used to display the infrared image captured by the infrared thermal imager 11; the button 6 is used to operate the infrared thermal imager 11.

[0012] Preferably, an infrared thermal imager 11 and a buzzer 12 are provided on the back of the housing 4; the buzzer 12 is communicatively connected to the PCB board and is used to issue a gas leakage alarm when the gas concentration exceeds a preset threshold.

[0013] Preferably, a signal antenna 3 is provided on the housing 4, the signal antenna 3 is communicatively connected to the positioning module, and the positioning module is communicatively connected to the PCB board for collecting current position information.

[0014] Preferably, a charging interface 7 is provided on the right side of the shell 4, and the charging interface 7 is connected to the lithium battery inside the shell 4; the lithium battery is used to supply power to the PCB board.

[0015] Preferably, an MCU is provided on the PCB board, and the MCU is a STM32F4XX series single-chip microcomputer.

[0016] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0017] The utility model provides a multifunctional gas leak detector. Compared with the prior art, the gas detection module of the utility model can directly measure the concentration of gas in the environment and quickly identify whether there is a gas leak, while the infrared thermal imager can accurately locate the leak source through temperature differences at night or under poor visual conditions. The combination of the two makes it possible to efficiently detect gas leaks even in an environment with limited vision. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a front view of the multifunctional gas leakage detector provided by the utility model.

[0020] Figure 2 It is a schematic diagram of the back side of the multifunctional gas leak detector provided by the utility model.

[0021] Figure 3It is a structural schematic diagram of the connection between the long hose provided by the utility model and the gas sensor interface.

[0022] Figure 4 It is a structural schematic diagram of the connection between the long hose and the gas sensor provided by the utility model.

[0023] Figure 5 It is a functional structural block diagram of the multifunctional gas leak detector provided by the utility model.

[0024] Figure 6 The utility model provides a multifunctional gas leak detector operation flow chart.

[0025] Explanation of symbols:

[0026] 1. First gas sensor, 2. Metal hose, 3. Signal antenna, 4. Shell, 5. LCD display, 6. Button, 7. Charging port, 8. Gas sensor port, 9. Long hose, 10. Second gas sensor, 11. Infrared thermal imager, 12. Buzzer, 13. Screw hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0030] See also Figure 1-4 , a multifunctional gas leak detector, comprising:

[0031] The detector body is respectively connected to the gas detection module and the infrared thermal imager 11 for communication; the gas detection module is used to detect the gas concentration; the infrared thermal imager 11 is used to locate the leakage point of the pipeline at night.

[0032] Furthermore, the detector body includes: a shell 4, the shell 4 contains a cavity, and a PCB board is arranged in the cavity; the PCB board is respectively connected to the gas detection module and the infrared thermal imager 11 for communication.

[0033] Among them, the gas detection module includes:

[0034] A first gas sensor 1, wherein one end of the first gas sensor 1 is connected to one end of a metal hose 2, and the other end of the metal hose 2 is disposed on the housing 4;

[0035] The second gas sensor 10 has one end connected to one end of the long hose 9 , and the other end of the long hose 9 is detachably connected to the gas sensor interface 8 on the housing 4 .

[0036] In one embodiment, the front of the device is provided with an LCD display screen 5 and a button 6; the LCD display screen 5 and the button 6 are both connected to the PCB board for communication, the LCD display screen 5 is used to display the infrared image collected by the infrared thermal imager 11; the button 6 is used to operate the infrared thermal imager 11. The button 6 also has the function of selecting a menu bar to perform system function settings and system calibration.

[0037] Furthermore, an infrared thermal imager 11 and a buzzer 12 are provided on the back of the housing 4; the buzzer 12 is connected to the PCB board for sending out a gas leak alarm when the gas concentration exceeds a preset threshold. The infrared thermal imager 11 is a high-definition infrared thermal imager, which can collect image information of the leakage area of ​​the ground gas pipeline at night under the operation of the button 6. The buzzer 12 can produce a harsh sound when a gas leak is detected to achieve the purpose of reminding the inspection personnel.

[0038] Furthermore, a signal antenna 3 is provided on the housing 4, and the signal antenna 3 is connected to the positioning module in communication, and the positioning module is connected to the PCB board in communication, so as to collect the current position information; the signal antenna 3 can enhance the communication signal and the positioning signal and keep the signal smooth, thus laying a good foundation for data uploading. A charging interface 7 is provided on the right side of the housing 4, and the charging interface 7 is connected to the lithium battery inside the housing 4; the lithium battery is used to power the PCB board, and the PCB board is provided with an MCU, a communication module, a high-speed ADC converter and a positioning module. The gas sensor 1, the signal antenna 3, the LCD display 5, the button 6, the infrared thermal imager 11 and the buzzer 12 are all connected to the MCU. As an implementation method, the single-chip microcomputer is a STM32F4XX series single-chip microcomputer.

[0039] It should be noted that the upper part of the housing 4 of the utility model is a rectangular parallelepiped of 130mm*80mm*40mm, and the lower part is a rectangular parallelepiped of 130mm*10mm*40mm, and the upper and lower difference of the connecting part of the two parts is 40mm. There are 8 screw holes 13 on the back of the housing 4, and the four screw holes 13 on the upper part are only used to fix the housing 4. The four screw holes 13 on the lower part have two functions. First, it is used to fix the housing 4, and secondly, it is used to fix the PCB board and lithium battery inside the housing 4. The screw size used in the screw hole 13 in the embodiment is an M2 cross slot pan head screw.

[0040] See also Figure 5 The multifunctional gas leak detector in the utility model has four main functional parts: an operation part, an information collection part, a data processing part and a communication part.

[0041] Furthermore, the operating part adjusts the display accuracy of the gas detection concentration through the buttons on the front of the shell, operates the infrared thermal imaging module of the information acquisition part located behind the shell, and can also operate the storage content of the storage module of the data processing part on the PCB board inside the shell.

[0042] The information collection part includes three basic modules: gas detection module, GPS positioning module and infrared thermal imaging module. Among them, the gas detection module is a relatively systematic part. In the present invention, the gas detection is carried out through the detection probe. The detection module consists of two parts. The first part is the conventional concentration detection part: it includes a high-precision detection probe located on the upper part of the shell, which can detect the gas concentration in the current environment in real time and accurately, and process the detection results through the data processing part. The second part is composed of different forms of probe connectors, including metal hoses and long hoses, which can be selected according to different detection needs; the positioning module adopts a high-precision Beidou positioning system, which is located on the internal PCB board and can provide real-time location information; the infrared thermal imaging module is located behind the shell and uses a high-precision infrared thermal imager to accurately locate the leakage point of the ground pipeline at night.

[0043] The data processing part is based on MCU and is located in the PCB board inside the shell. The built-in processing chip can realize real-time data processing function, and can record historical data through the storage module, and can perform data analysis and transmission according to user needs, and can transmit data with the communication part. The gas concentration and other data are displayed through the display module after processing.

[0044] The communication part is located in the PCB board inside the shell. Based on the low-power wide area network communication technology (NB-IOT), it transmits the detection results, alarm information, etc. to the cloud in real time via the signal antenna outside the shell, and connects with terminal devices such as mobile phones and computers to easily understand the latest gas pipeline inspection status.

[0045] The alarm part adopts a buzzer which is located inside the shell. There is an opening at the back of the shell, and the sound signal generated by the buzzer is emitted through the opening to achieve the purpose of reminding.

[0046] See also Figure 6 The following is an explanation of the operation process of the multifunctional gas leak detector provided in this embodiment:

[0047] The operator turns on the power switch of the gas leak detector, and the device automatically enters the startup state. At this time, the internal system of the device begins self-checking, including battery power check, sensor status detection and communication module connectivity test. The self-check process ensures that all key components are in good working condition. If any problems are found, the device will display an error message and prompt the operator to perform appropriate troubleshooting.

[0048] Furthermore, the operator operates the user interface to select a detection mode by pressing the key 6 of the device. The interface provides options such as ground gas inspection port detection or gas monitoring well detection.

[0049] Furthermore, according to the selected detection mode, the operator needs to select a suitable sensor type: Ground gas inspection port detection: select a gas sensor using a metal hose 2. Gas monitoring well detection: select a gas sensor that can be connected to a long hose 9.

[0050] Furthermore, the device activates the built-in GPS module to obtain the current location information, ensuring that the detection data is accurately associated with the geographic location, facilitating subsequent data analysis and leak location.

[0051] Further, the operator places the selected sensor at the detection point. The device starts to detect the gas concentration in the surrounding environment and displays the measurement results in real time.

[0052] Furthermore, the device automatically records the detected gas concentration and performs a preliminary analysis to determine whether there are signs of a gas leak.

[0053] Furthermore, according to the on-site conditions, the operator can decide whether to conduct infrared thermal imaging detection to detect leaks in above-ground gas pipelines at night or under conditions of poor visibility.

[0054] Furthermore, if it is detected that the gas concentration exceeds the standard or an abnormal temperature area is found through the infrared thermal imager 11, the device will automatically sound an alarm through the buzzer 12 and prompt an alarm message on the LCD display 5.

[0055] Furthermore, all detection data, including gas concentration, location information, timestamps and any alarm records, are transmitted to the central monitoring system in real time through the NB-IOT communication module for further analysis and archiving. After completing a complete detection task, the operator can choose to end the detection and turn off the equipment, or prepare for the next detection. The operator turns off the power of the equipment to complete this gas inspection task.

[0056] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0057] The gas leak detector provided in this embodiment integrates multiple sensing technologies and communication means to ensure the efficiency and accuracy of gas leak detection. The design of the device takes into account the convenience of actual operation and the real-time nature of data processing, and is very suitable for complex and changeable field environments.

[0058] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A multifunctional gas leak detector, characterized in that: include: A detector body, the detector body being communicatively connected to the gas detection module and the infrared thermal imager (11) respectively; The gas detection module is used to detect the gas concentration; the infrared thermal imager (11) is used to locate the leakage point of the pipeline at night; The detector body comprises: a shell (4), the shell (4) contains a cavity, and a PCB board is arranged in the cavity; the PCB board is respectively connected to the gas detection module and the infrared thermal imager (11) for communication; The gas detection module comprises: A first gas sensor (1), one end of the first gas sensor (1) being connected to one end of a metal hose (2), and the other end of the metal hose (2) being arranged on the housing (4); A second gas sensor (10), one end of the second gas sensor (10) being connected to one end of a long hose (9), and the other end of the long hose (9) being detachably connected to a gas sensor interface (8) on the housing (4); When testing the ground gas inspection port, a first gas sensor (1) connected to the metal hose (2) is used; when testing the gas monitoring well, a second gas sensor (10) connected to the long hose (9) is selected; The housing (4) is provided with a signal antenna (3), the signal antenna (3) is communicatively connected to a positioning module, and the positioning module is communicatively connected to the PCB board for collecting current position information.

2. A multifunctional gas leak detector as claimed in claim 1, characterized in that: An LCD display screen (5) and a button (6) are provided on the front of the housing (4); the LCD display screen (5) and the button (6) are both communicatively connected to the PCB board; the LCD display screen (5) is used to display an infrared image captured by the infrared thermal imager (11); and the button (6) is used to operate the infrared thermal imager (11).

3. A multifunctional gas leak detector as claimed in claim 1, characterized in that: An infrared thermal imager (11) and a buzzer (12) are provided on the back of the housing (4); the buzzer (12) is communicatively connected to the PCB board and is used to issue a gas leakage alarm when the gas concentration exceeds a preset threshold.

4. A multifunctional gas leak detector as claimed in claim 1, characterized in that: A charging interface (7) is provided on the right side of the housing (4), and the charging interface (7) is connected to a lithium battery inside the housing (4); the lithium battery is used to supply power to the PCB board.

5. A multifunctional gas leak detector as claimed in claim 1, characterized in that: The PCB board is provided with an MCU, and the MCU is a STM32F4XX series single-chip microcomputer.

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