A combustible gas detector

Abstract

The utility model relates to detection instrument technical field especially is a kind of combustible gas detector, it includes detection component, control casing and serpentine pipe, main control PCB board is installed in control casing, indicator lamp component and control button are provided on control casing, control casing is connected with detection component by serpentine pipe, detection component includes probe cover, sensor body and sensor support, one end of probe cover is connected with one end of serpentine pipe, sensor body is installed on sensor support, and the other end of sensor support and probe cover is detachably connected.The utility model novel structure, clever design, serpentine pipe is convenient for detection personnel to adjust the angle and direction of detection, realize the angle self-adapting adjustment of detection component, sensor support and probe cover detachably connect, and it is convenient to replace sensor body;Detection component is modular design and supports quick replacement sensor body, reduces downtime.

Description

Technical Field

[0001] This utility model relates to the field of detection instrument technology, and in particular to a combustible gas detector. Background Technology

[0002] Traditional combustible gas detectors suffer from three major technical bottlenecks: 1. Rigid structure limitations: Existing equipment mostly uses fixed supports, making it difficult to adapt to the detection needs of complex spaces (such as winding pipes and high-altitude areas), and manual adjustment of the probe angle easily leads to measurement errors; 2. High maintenance costs: The integrated design of the sensor and housing means that replacement requires complete disassembly, or disassembly itself will damage the device, with average repair time exceeding 30 minutes, resulting in high costs. Existing solutions to address these issues include using telescopic rod structures to extend the detection range, but this still results in positioning deviations due to mechanical wear; and the issue of installation flexibility remains unresolved. Therefore, there is an urgent need for a detector that combines flexible detection with rapid maintenance. Summary of the Invention

[0003] This utility model addresses the problems of existing technologies by providing a combustible gas detector with a novel structure and ingenious design. The serpentine tube facilitates the adjustment of the detection angle and direction by the testing personnel, enabling adaptive adjustment of the detection component's angle. The sensor bracket and probe sleeve are detachably connected, facilitating the replacement of the sensor body. The modular design of the detection component supports rapid replacement of the sensor body, reducing downtime.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a combustible gas detector, which includes a detection component, a control housing, and a serpentine tube. The control housing houses a main control PCB board and is equipped with an indicator light assembly and control buttons. The control housing is connected to the detection component through the serpentine tube. The detection component includes a probe sleeve, a sensor body, and a sensor bracket. One end of the probe sleeve is connected to one end of the serpentine tube. The sensor body is mounted on the sensor bracket, and the sensor bracket is detachably connected to the other end of the probe sleeve. The sensor body, indicator light assembly, and control buttons are electrically connected to the main control PCB board.

[0006] Preferably, the serpentine tube is made of shape memory alloy.

[0007] The probe sleeve has an external thread on its outer circumference at the other end, and the sensor bracket has an internal thread on its inner ring that engages with the external thread. The sensor bracket is threadedly connected to the other end of the probe sleeve.

[0008] The control housing is also equipped with a buzzer, which is electrically connected to the main control PCB board.

[0009] The back of the control housing is also provided with a battery compartment and a battery cover that is detachably connected to the back of the control housing. The battery cover is used to cover the battery compartment.

[0010] The sensor body is an MP-4 sensor.

[0011] The detection component further includes a sensor PCB board, which is installed inside the probe sleeve. The sensor body is plugged into and connected to the sensor PCB board, and the sensor PCB board is electrically connected to the main control PCB board.

[0012] The main control PCB board is equipped with a 5V boost regulator circuit, an MCU control circuit, and an indicator light circuit. The sensor PCB board is equipped with a probe operational amplifier circuit. The indicator light assembly is electrically connected to the indicator light circuit. The 5V boost regulator circuit, the probe operational amplifier circuit, and the indicator light circuit are all electrically connected to the MCU control circuit.

[0013] The beneficial effects of this utility model are:

[0014] This utility model features a novel structure and ingenious design. The serpentine tube facilitates the adjustment of the detection angle and direction by the testing personnel. Furthermore, the serpentine tube is made of shape memory alloy, which, based on the thermoelastic martensitic phase transformation characteristics, can automatically recover its preset shape when the temperature changes, enabling adaptive adjustment of the detection component's angle. The sensor bracket and probe sleeve are detachably connected, facilitating sensor body replacement. The main control PCB board integrates signal processing and indicator alarm functions. In this embodiment, the serpentine tube can be bent and extended into narrow spaces, and its shape memory characteristics ensure probe positioning stability. The modular design of the detection component supports rapid sensor body replacement, reducing downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a combustible gas detector according to the present invention.

[0016] Figure 2 This is an exploded view of the structure of a combustible gas detector according to the present invention.

[0017] Figure 3 This is a block diagram illustrating the control principle of the main control PCB board and the sensor PCB board of this utility model.

[0018] Figure 4 This is a circuit diagram of the MCU control circuit of this utility model.

[0019] Figure 5 This is a circuit diagram of the probe operational amplifier circuit of this utility model.

[0020] Figure 6This is a circuit diagram of the indicator light circuit of this utility model.

[0021] Figure 7 This is a circuit diagram of the 5V boost voltage regulator circuit of this utility model.

[0022] exist Figures 1 to 7 The reference numerals in the figures include:

[0023] 100. Serpentine tube; 101. Control housing; 102. Indicator light assembly; 103. Control button; 104. Probe sleeve; 105. Sensor body; 106. Sensor bracket; 107. Buzzer; 108. Battery compartment; 109. Battery cover; 110. Sensor PCB board. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0025] In the embodiments of this application, such as Figures 1 to 2 As shown, a combustible gas detector is provided, comprising a detection component, a control housing 101, and a serpentine tube 100. The control housing 101 houses a main control PCB board and is equipped with an indicator light assembly 102 and control buttons 103. The control housing 101 is connected to the detection component via the serpentine tube 100. The detection component includes a probe sleeve 104, a sensor body 105, and a sensor bracket 106. One end of the probe sleeve 104 is connected to one end of the serpentine tube 100. The sensor body 105 is mounted on the sensor bracket 106, and the sensor bracket 106 is detachably connected to the other end of the probe sleeve 104. The sensor body 105, indicator light assembly 102, and control buttons 103 are electrically connected to the main control PCB board. Preferably, the serpentine tube 100 is made of shape memory alloy; wherein, wires are threaded through the serpentine tube 100 to connect the sensor body 105 to the main control PCB board. Specifically, this utility model features a novel structure and ingenious design. The serpentine tube 100 facilitates the adjustment of the detection angle and direction by the testing personnel. Furthermore, the serpentine tube 100 is made of shape memory alloy material, which, based on the thermoelastic martensitic phase transformation characteristics, can automatically recover its preset shape when the temperature changes, thus achieving adaptive adjustment of the angle of the detection component. The sensor bracket 106 and the probe sleeve 104 are detachably connected, facilitating the replacement of the sensor body 105. The main control PCB board integrates signal processing and indicator alarm functions. In this embodiment, the serpentine tube 100 can be bent and extended into narrow spaces (such as inside a pipe). The shape memory characteristics ensure the stability of the probe positioning. The modular design of the detection component supports quick replacement of the sensor body 105, reducing downtime.

[0026] Furthermore, the inner or outer wall of the serpentine tube 100 is provided with a shielding layer, which can further reduce signal transmission interference and improve detection accuracy.

[0027] In this embodiment, the other end of the probe sleeve 104 is provided with an external thread, and the inner side of the sensor bracket 106 is provided with an internal thread that engages with the external thread. The sensor bracket 106 is threadedly connected to the other end of the probe sleeve 104. The detection assembly also includes a sensor PCB board 110, which is installed inside the probe sleeve 104. The sensor body 105 is plugged into and connected to the sensor PCB board 110, and the sensor PCB board 110 is electrically connected to the main control PCB board. Specifically, in this configuration, since the probe sleeve 104 and the sensor bracket 106 are detachably connected, when the sensor body 105 is damaged, technicians can disassemble the sensor bracket 106 to directly replace the sensor body 105, which is simple to operate, convenient to replace, and improves work efficiency. Furthermore, during installation, the sensor body 105 is connected to the sensor PCB board 110 to achieve signal connection between the sensor body 105 and the main control PCB board, making installation convenient. The main control PCB board and the sensor PCB board 110 can be connected by wires inside the serpentine tube 100. Of course, the main control PCB board and the sensor PCB board 110 can also transmit signals through a wireless communication module.

[0028] In this embodiment, a buzzer 107 is also provided on the control housing 101, and the buzzer 107 is electrically connected to the main control PCB board. A battery compartment 108 and a battery cover 109 detachably connected to the back of the control housing 101 are also provided on the back of the control housing 101, and the battery cover 109 is used to cover the battery compartment 108. The sensor body 105 is an MP-4 sensor.

[0029] Among them, such as Figures 3 to 7 As shown, the main control PCB board is equipped with a 5V boost regulator circuit, an MCU control circuit, and an indicator light circuit. The sensor PCB board 110 is equipped with a probe operational amplifier circuit. The indicator light assembly 102 is electrically connected to the indicator light circuit. The 5V boost regulator circuit, the probe operational amplifier circuit, and the indicator light circuit are all electrically connected to the MCU control circuit. The 5V boost regulator circuit includes chip U1, whose model number is SGM66099. The MCU control circuit includes chip U2, whose model number is STC9G1K08.

[0030] Specifically, in this embodiment, the battery compartment is equipped with a 1.5*3V dry cell battery, which powers the MCU control circuit, indicator light circuit, indicator light assembly, sensor body, probe operational amplifier circuit, and buzzer via a 5V boost regulator circuit. The control button is the power button. When the power button is pressed, the potential of pin 3 of the BAT54C dual diode D1 is pulled low. Pin 2 of the BAT54C dual diode D1 is connected to the power supply through resistors R24 and R12, making the diode conduct between pins 1 and 2 of the BAT54C dual diode, and the potential at pin 2 is pulled low. For MOSFET Q7, Vs>Vg, MOSFET Q7 is turned on. Similarly, by controlling the gate potential (G) of MOSFET Q1 through the I / O port, MOSFET Q1 is turned on, which in turn turns on MOSFET Q7. When MOSFET Q7 is turned on, MOSFET Q2 is also turned on. The voltage is regulated to 5V by the SGM66099 chip. Resistors R8 and R9 form a voltage divider resistor, which is used to read the power supply level. When the power supply voltage is low, the I / O port controls MOSFET Q11 to turn on, and LED4 lights up red to indicate low power. Conversely, the I / O port controls MOSFET Q9 to turn on, and LED4 lights up green to indicate sufficient power.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A combustible gas detector, characterized in that: The device includes a detection component, a control housing, and a serpentine tube. The control housing houses a main control PCB board and is equipped with an indicator light assembly and control buttons. The control housing is connected to the detection component via the serpentine tube. The detection component includes a probe sleeve, a sensor body, and a sensor bracket. One end of the probe sleeve is connected to one end of the serpentine tube. The sensor body is mounted on the sensor bracket, and the sensor bracket is detachably connected to the other end of the probe sleeve. The sensor body, indicator light assembly, and control buttons are electrically connected to the main control PCB board.

2. The combustible gas detector according to claim 1, characterized in that: The serpentine tube is made of shape memory alloy.

3. The combustible gas detector according to claim 1, characterized in that: The probe sleeve has an external thread on its outer circumference at the other end, and the sensor bracket has an internal thread on its inner ring that engages with the external thread. The sensor bracket is threadedly connected to the other end of the probe sleeve.

4. A combustible gas detector according to claim 1, characterized in that: The control housing is also equipped with a buzzer, which is electrically connected to the main control PCB board.

5. A combustible gas detector according to claim 1, characterized in that: The back of the control housing is also provided with a battery compartment and a battery cover that is detachably connected to the back of the control housing. The battery cover is used to cover the battery compartment.

6. A combustible gas detector according to claim 1, characterized in that: The sensor body is an MP-4 sensor.

7. A combustible gas detector according to claim 1, characterized in that: The detection assembly also includes a sensor PCB board, which is installed inside the probe sleeve. The sensor body is plugged into and connected to the sensor PCB board, and the sensor PCB board is electrically connected to the main control PCB board.

8. A combustible gas detector according to claim 7, characterized in that: The main control PCB board is equipped with a 5V boost regulator circuit, an MCU control circuit, and an indicator light circuit. The sensor PCB board is equipped with a probe operational amplifier circuit. The indicator light assembly is electrically connected to the indicator light circuit. The 5V boost regulator circuit, the probe operational amplifier circuit, and the indicator light circuit are all electrically connected to the MCU control circuit.

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