A scanning combustible gas detection device

Abstract

The utility model discloses a scanning type combustible gas detection device, including the explosion -proof holder, the inside installation of explosion -proof holder has double -shaft motor, and the output of double -shaft motor is installed respectively with combustible gas detector and camera. The heat of the utility model, need through the airflow circulation of ventilation component and export fast, and the composite film passes through " low resistance air -permeable + prevent block " design, provides stable passage for the heat dissipation airflow, in the low temperature heat dissipation scene, the SMA micro -filament assembly of the middle support layer embedding in the composite film, when temperature <= 5 DEG C, will automatically contract, pull the micropore expansion, and the inner layer hydrophilic PU film can quickly lead away the condensation water drop, avoid water drop block air -permeable passage, ensure the air -permeable effect, when ambient temperature >= 40 DEG C, SMA micro -filament assembly will automatically dilatation, drive the micropore of middle support layer from the expansion state recovers to the initial aperture, both avoid the aperture too big under high temperature and lead to dust, water vapor invasion, and can maintain enough air -permeable amount through the stable micropore structure.

Description

Technical Field

[0001] This utility model relates to the technical field of gas detection devices, specifically to a scanning combustible gas detection device. Background Technology

[0002] In the operation system of combustible gas detection device, the heat dissipation system and waterproof and breathable membrane need to form a "collaborative working closed loop": the heat dissipation system removes the heat generated by the internal components through air circulation, while the waterproof and breathable membrane, as the "necessary channel" for heat dissipation airflow, needs to meet the dual requirements of "high-efficiency breathability" and "waterproof and dustproof".

[0003] However, the dynamic changes in temperature and humidity during heat dissipation in industrial settings have put traditional fixed-structure waterproof and breathable membranes in a double predicament of "insufficient heat dissipation efficiency" and "protection failure".

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] (a) Technical problems to be solved To address the issues raised in the appeal, this utility model provides a scanning combustible gas detection device, thereby resolving the problems mentioned in the background art.

[0006] (II) Technical Solution To address the aforementioned problems, the specific technical solution adopted by this utility model is as follows: A scanning combustible gas detection device includes an explosion-proof pan-tilt unit. A dual-axis motor is installed inside the explosion-proof pan-tilt unit. A combustible gas detector and a camera are respectively installed at the output ends of the dual-axis motor. A buzzer is installed on the upper surface of the explosion-proof pan-tilt unit, and a mounting base is fixed to the back of the explosion-proof pan-tilt unit. Ventilation holes are opened on the side surface of the explosion-proof pan-tilt unit. A composite membrane is disposed inside the ventilation holes. The composite membrane is composed of a surface anti-contamination layer, a middle support layer, an inner functional layer, and an SMA microfilament assembly. The middle support layer is disposed inside the surface anti-contamination layer, and the SMA microfilament assembly is embedded inside the middle support layer. An inner functional layer is disposed inside the middle support layer. A temperature and humidity sensor is installed on the outer side of the composite membrane.

[0007] Furthermore, the surface anti-fouling layer is a modified PTFE material, which is subjected to plasma surface treatment to form a superhydrophobic coating.

[0008] Furthermore, the flexible substrate of the intermediate support layer is a polypropylene microporous mesh.

[0009] Furthermore, the inner functional layer is a hydrophilic PU film, and the hydrophilic PU film is bonded to the intermediate support layer with a water-based adhesive.

[0010] Furthermore, a frame is pulled out and installed on the side surface of the combustible gas detector, and a composite membrane is embedded inside the frame. The frame is made of flame-retardant ABS, and a sealing ring is provided at the contact point between the frame and the composite membrane.

[0011] Furthermore, the combustible gas detector is equipped with an internal ventilation fan.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a scanning combustible gas detection device, which has the following beneficial effects: The heat generated by this invention needs to be quickly dissipated through the airflow circulation of the ventilation component. The composite membrane provides a stable channel for heat dissipation airflow through a "low-resistance breathability + anti-clogging" design: In low-temperature heat dissipation scenarios, the SMA microfilament component embedded in the middle support layer of the composite membrane will automatically contract when the temperature is ≤5℃, pulling the micropores to expand. At the same time, the inner hydrophilic PU membrane can quickly guide away condensed water droplets, preventing water droplets from clogging the breathable channel and ensuring breathability. When the ambient temperature is ≥40℃, the SMA microfilament component will automatically expand, causing the micropores of the middle support layer to return from the expanded state to the initial pore size. This not only avoids dust and water vapor intrusion caused by excessively large pore size at high temperatures, but also maintains sufficient breathability through the stable microporous structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a scanning combustible gas detection device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the combustible gas detector of this utility model; Figure 3 This is a schematic diagram of the composite membrane of this utility model.

[0015] In the picture: 1. Explosion-proof pan-tilt unit; 2. Buzzer light; 3. Mounting base; 4. Combustible gas detector; 5. Camera; 6. Ventilation fan; 7. Frame; 8. Composite membrane; 9. Surface anti-pollution layer; 10. Middle support layer; 11. Inner functional layer; 12. SMA microfilament assembly; 13. Temperature and humidity sensor. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0017] According to an embodiment of the present invention, a scanning combustible gas detection device is provided.

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3 As shown, a scanning combustible gas detection device according to an embodiment of the present invention includes an explosion-proof pan-tilt unit 1. A dual-axis motor is installed inside the explosion-proof pan-tilt unit 1. A combustible gas detector and a camera 5 are respectively installed at the output end of the dual-axis motor. A buzzer light 2 is installed on the upper surface of the explosion-proof pan-tilt unit 1, and a mounting base 3 is fixed on the back of the explosion-proof pan-tilt unit 1. A ventilation hole is opened on the side surface of the explosion-proof pan-tilt unit 1. A composite membrane 8 is provided inside the ventilation hole. The composite membrane 8 is composed of a surface anti-pollution layer 9, a middle support layer 10, an inner functional layer, and an SMA microfilament assembly 12. The middle support layer 10 is provided inside the surface anti-pollution layer 9, and the SMA microfilament assembly 12 is embedded inside the middle support layer 10. An inner functional layer 11 is provided inside the middle support layer 10. A temperature and humidity sensor 13 is installed on the outside of the composite membrane 8.

[0019] In one embodiment, the airflow needs to be quickly discharged through the ventilation component. The composite membrane 8 provides a stable channel for heat dissipation airflow through the "low resistance ventilation + anti-clogging" design: In low temperature heat dissipation scenarios, the SMA microfilament component 12 embedded in the middle support layer 10 of the composite membrane 8 will automatically shrink when the temperature is ≤5℃, pulling the micropores to expand. At the same time, the inner hydrophilic PU membrane can quickly guide away condensed water droplets, preventing water droplets from blocking the ventilation channel and ensuring the ventilation effect. When the ambient temperature is ≥40℃, the SMA microfilament component 12 will automatically expand, causing the micropores of the middle support layer 10 to return from the expanded state to the initial pore size. This not only avoids the intrusion of dust and water vapor due to excessively large pore size at high temperatures, but also maintains sufficient air permeability through the stable microporous structure.

[0020] Specifically, the surface anti-fouling layer 9 is made of modified PTFE material, which is then subjected to plasma surface treatment to form a superhydrophobic coating.

[0021] In one embodiment, to further enhance the wear resistance and oil stain resistance of the superhydrophobic coating, a fluorosilane modifier (such as tridecafluorooctyltriethoxysilane) is introduced during the plasma treatment process to form a "micro-nano-level uneven structure" on the coating surface, which can effectively resist the adhesion of oil droplets and dust mixtures in the chemical workshop, avoid the degradation of anti-pollution performance due to coating wear, and extend the maintenance cycle of the surface anti-pollution layer 9.

[0022] Specifically, the flexible substrate of the intermediate support layer 10 is a polypropylene microporous mesh.

[0023] In one embodiment, to enhance the high and low temperature resistance and structural support of the polypropylene microporous mesh, the polypropylene microporous mesh is prepared using a "biaxial stretching process," with a porosity controlled at 82%-85% and the micropores distributed in a hexagonal honeycomb pattern. Simultaneously, 5%-8% of a weather-resistant agent is added to the polypropylene raw material, ensuring that the microporous mesh does not crack in extremely cold environments (-40℃) and does not experience thermal shrinkage in high-temperature environments (80℃). This ensures that the microporous mesh can deform stably without damage when the SMA microfilament assembly 12 shrinks / expands, preventing interruption of the air permeability regulation function due to support layer failure.

[0024] Specifically, the inner functional layer 11 is a hydrophilic PU film, and the hydrophilic PU film is bonded to the intermediate support layer 10 with a water-based adhesive.

[0025] In one embodiment, to optimize the moisture-wicking efficiency and adhesion stability of the hydrophilic PU film, the hydrophilic PU film is prepared using a "block copolymerization" process, introducing hydrophilic polyether segments into the molecular chain, thereby achieving a water absorption rate of 0.5 g / (cm³). 2 •h), and there is no swelling or deformation after absorbing water. The hydrophilic PU film and the intermediate support layer 10 do not delaminate, ensuring that the low-temperature condensed water droplets can be quickly guided away from the intermediate support layer 10 to avoid micropore blockage.

[0026] Specifically, a frame 7 is pulled out and installed on the side surface of the combustible gas detector 4, and a composite membrane 8 is embedded inside the frame 7. The frame 7 is made of flame-retardant ABS, and a sealing ring is provided at the contact point between the frame 7 and the composite membrane 8.

[0027] In one embodiment, to improve the explosion-proof performance and ease of installation of frame 7.

[0028] Specifically, the combustible gas detector 4 is equipped with an internal ventilation fan 6.

[0029] In one embodiment, intelligent speed regulation and energy-saving operation of the ventilation fan 6 are achieved.

[0030] Working principle: The dual-axis motor inside the explosion-proof pan-tilt unit 1 drives the combustible gas detector 4 and camera 5 to move synchronously. The combustible gas detector 4 detects the concentration of combustible gas in the scanning area in real time through the laser absorption principle. When the combustible gas detector 4 detects that the concentration exceeds the standard, the camera 5 simultaneously captures the image of the area and transmits the concentration data and real-time image to the back-end platform. The temperature and humidity sensor 13 collects the temperature and humidity data near the composite membrane 8 in real time: When the ambient temperature is ≤5℃, the sensor feedback signal triggers the SMA microfilament component 12 of the intermediate support layer 10 to contract, pulling the micropores of the polypropylene microporous mesh. At the same time, the inner hydrophilic P membrane quickly guides away condensed water droplets, avoiding micropore blockage and ensuring the flow of heat dissipation airflow. When the ambient temperature is ≥40℃, the SMA microfilament component 12 expands, and the micropores return to their initial size, preventing dust and water vapor from entering through the large pores. The surface modified PTFE superhydrophobic coating repels oil and rainwater, further blocking the entry of pollutants.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scanning combustible gas detection device, comprising an explosion-proof pan-tilt unit (1), characterized in that, The explosion-proof gimbal (1) is equipped with a dual-axis motor. The output end of the dual-axis motor is equipped with a combustible gas detector (4) and a camera (5). A buzzer (2) is installed on the upper surface of the explosion-proof gimbal (1), and a mounting base (3) is fixed on the back of the explosion-proof gimbal (1). A ventilation hole is opened on the side surface of the explosion-proof gimbal (1). A composite membrane (8) is provided inside the ventilation hole. The composite membrane (8) is composed of a surface anti-pollution layer (9), a middle support layer (10), an inner functional layer (11), and an SMA microfilament assembly (12). The middle support layer (10) is provided inside the surface anti-pollution layer (9), and the SMA microfilament assembly (12) is embedded inside the middle support layer (10). The inner functional layer (11) is provided inside the middle support layer (10). A temperature and humidity sensor (13) is installed on the outside of the composite membrane (8).

2. The scanning combustible gas detection device according to claim 1, characterized in that, The surface anti-fouling layer (9) is a modified PTFE material, which is formed into a superhydrophobic coating by plasma surface treatment.

3. The scanning combustible gas detection device according to claim 2, characterized in that, The flexible substrate of the intermediate support layer (10) is a polypropylene microporous mesh.

4. The scanning combustible gas detection device according to claim 3, characterized in that, The inner functional layer (11) is a hydrophilic PU film, and the hydrophilic PU film is bonded to the intermediate support layer (10) by a water-based adhesive.

5. A scanning combustible gas detection device according to claim 4, characterized in that, The combustible gas detector (4) has a frame (7) that is pulled out and installed on its side surface, and a composite membrane (8) is embedded inside the frame (7). The frame (7) is made of flame-retardant ABS, and a sealing ring is provided at the contact part between the frame (7) and the composite membrane (8).

6. A scanning combustible gas detection device according to claim 5, characterized in that, The combustible gas detector (4) is equipped with an internal ventilation fan (6).

Images