Leakage alarm device for gas detection

Abstract

The utility model relates to the field of gas detection, and discloses a leakage alarm device for gas detection, which comprises a gas detection alarm instrument, an alarm is fixedly mounted on one side of the outer surface of the gas detection alarm instrument, a detection head is arranged on the lower bottom surface of the gas detection alarm instrument, and a positioning plate is fixedly mounted at the bottom end of the gas detection alarm instrument close to the detection head. Limiting columns are symmetrically and fixedly mounted on the two sides of the upper surface and the front end face of the positioning plate, mounting blocks are mounted on the outer surfaces of every two adjacent limiting columns, bearing supports are fixedly mounted in the middles of the front end faces of the mounting blocks, and supporting shafts are rotationally mounted on the edges of one ends of the bearing supports; the positions and angles of the air supply fan and the wide-mouth cover are adjusted, the air supply fan accelerates air flow, air can reach the detection head faster, detection delay is reduced, the sensitivity of the detection head is improved, and compared with the prior art, the device can detect air leakage more timely and accurately, strive for more time for safety protection and reduce accident risks.

Description

Technical Field

[0001] This application relates to the field of gas detection, and in particular to a gas leak alarm device for gas detection. Background Technology

[0002] In numerous fields such as industrial production, urban gas supply, and environmental monitoring, gas leaks can lead to serious accidents such as explosions, poisoning, and environmental pollution. Therefore, gas leak detection alarm devices are crucial. Existing gas leak detection alarm devices primarily use detection heads to detect target gases in the surrounding air. When the detection head senses that the gas concentration has reached a preset alarm threshold, the device will sound an alarm. These devices can, to a certain extent, meet basic gas leak detection needs, providing a guarantee for safe production and environmental safety.

[0003] However, the detection heads of existing detection alarm devices are often fixed in place. In practical applications, once a gas leak occurs, the gas needs to diffuse and evaporate in the natural environment for a certain period of time before it reaches the location of the detection head. During this process, the gas diffusion speed is affected by various factors, such as gas density, ambient airflow, and temperature, which prevents the detection head from obtaining accurate gas concentration information in a timely manner. This causes a delay in the detection head's judgment of the gas in the air, reduces the sensitivity of the detection head, and consequently prevents the detection alarm device from triggering in time. The detection head is unable to detect the danger in time, and by the time the detection head finally detects the dangerous concentration, the best time to deal with it may have already been missed, thus increasing the risk of an accident.

[0004] In view of the aforementioned technologies, the inventors believe that the detection alarm device has the drawback of limited gas sensing effect of the detection head during use. Therefore, a gas leak alarm device for detection is proposed to solve the above problems. Utility Model Content

[0005] To address the problem that gas detection alarm devices have limited gas sensing capabilities during use, this application provides a gas leak alarm device.

[0006] The gas detection leak alarm device provided in this application adopts the following technical solution:

[0007] A gas leak alarm device includes a gas detector, an alarm fixedly mounted on one side of the outer surface of the gas detector, a detection head provided on the bottom surface of the gas detector, a positioning plate fixedly mounted near the detection head at the bottom end of the gas detector, limit posts symmetrically fixedly mounted on both sides and the front end of the upper surface of the positioning plate, mounting blocks mounted on the outer surfaces of two adjacent limit posts, a bearing support fixedly mounted in the middle of the front end of the mounting block, a support shaft rotatably mounted on one end of the bearing support, a support rod hinged to the middle of the outer surface of the support shaft, a damping bearing seat rotatably mounted on one end of the support rod, a mounting frame fixedly mounted at the bottom end of the damping bearing seat, a fan installed inside the mounting frame, a micro motor provided in the middle of one end of the fan, a mask fixedly mounted on one side of the mounting frame, and a limiting mechanism provided on the outer surface of the support shaft for adjusting the support rod to be fixed at different angles.

[0008] Preferably, the limiting mechanism includes a fixed chuck, which is symmetrically fixedly installed on both sides of the outer surface of the bearing support near the support shaft. A movable chuck is fitted on both sides of the outer surface of the support shaft. External threads are provided on both sides of the outer surface of the support shaft. Limiting nuts are threadedly connected to both sides of the support shaft. One side of the limiting nut abuts against the movable chuck.

[0009] Preferably, a threaded hole is provided on the upper surface of the positioning plate near the middle position of the two limiting posts, and a through hole is provided at the middle of the top of the mounting block. A fastening bolt is threadedly connected to the upper surface of the mounting block through the through hole and into the threaded hole.

[0010] Preferably, the upper surface of the mounting block has two through holes on both sides, the outer diameter of the limiting post is smaller than the inner diameter of the second through hole, and the limiting post and the second through hole are fitted together.

[0011] Preferably, both the fixed chuck and the movable chuck have slots at their mating positions on one side, and the fixed chuck and the movable chuck abut against each other and engage.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] By incorporating an adjustable support rod, the position and angle of the blower fan and wide-angle mask can be adjusted according to actual conditions. The wide-angle mask expands the gas collection range, while the blower fan accelerates gas flow, allowing gas to reach the detection head more quickly, reducing detection delay and improving the detection head's sensitivity. A limiting mechanism can fix the support rod at a suitable angle, ensuring detection stability. Compared to existing technologies, this device can detect gas leaks more promptly and accurately, buying more time for safety protection and reducing the risk of accidents. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the application embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of the mask described in the application embodiment;

[0016] Figure 3 This is a schematic diagram of the fixed chuck and the movable chuck in the embodiment of the application;

[0017] Figure 4 This is a schematic diagram of the positioning plate in the embodiment of the application;

[0018] Explanation of reference numerals in the attached diagram: 1. Gas detector alarm; 2. Alarm; 3. Detection head; 4. Positioning plate; 5. Limiting post; 6. Mounting block; 7. Bearing support; 8. Support shaft; 9. Support rod; 10. Damping bearing seat; 11. Mounting bracket; 12. Exhaust fan; 13. Miniature motor; 14. Wide-face mask; 15. Fixed chuck; 16. Movable chuck; 17. Limiting nut; 18. Threaded hole; 19. Fastening bolt. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0020] This application discloses a gas leak alarm device for detection. (Refer to...) Figure 1-4 A gas leak alarm device includes a gas detector alarm 1, an alarm 2 fixedly mounted on one side of the outer surface of the gas detector alarm 1, a detection head 3 provided on the bottom surface of the gas detector alarm 1, a positioning plate 4 fixedly mounted on the bottom end of the gas detector alarm 1 near the detection head 3, limit posts 5 symmetrically fixedly mounted on both sides and the front end of the upper surface of the positioning plate 4, and mounting blocks 6 mounted on the outer surface of two adjacent limit posts 5. Two through holes are opened on both sides of the upper surface of the mounting blocks 6. The outer diameter of the limit posts 5 is smaller than the inner diameter of the two through holes. The limit posts 5 and the two through holes... The holes fit together. A bearing support 7 is fixedly installed in the middle of the front end face of the mounting block 6. A support shaft 8 is rotatably installed on one end of the bearing support 7. A support rod 9 is hinged to the middle of the outer surface of the support shaft 8. A damping bearing seat 10 is rotatably installed on one end of the support rod 9. A mounting bracket 11 is fixedly installed at the bottom of the damping bearing seat 10. A fan 12 is installed inside the mounting bracket 11. A micro motor 13 is set in the middle of one end of the fan 12. A wide-angle mask 14 is fixedly installed on one side of the mounting bracket 11. A limiting mechanism is also provided on the outer surface of the support shaft 8 to adjust the support rod 9 to be fixed at different angles.

[0021] By mounting the mounting block 6 on the positioning plate 4, the support rod 9 supports the mounting frame 11. Rotating the support rod 9 and the damping bearing seat 10 adjusts the placement angle and position of the fan 12. The micro motor 13 starts, driving the fan 12 to rotate. The wide-face mask 14 increases the gas collection area, accelerating the flow of surrounding gas and causing the leaked gas to flow more quickly and concentratedly towards the detection head 3. The detection head 3 detects the gas concentration in real time and transmits the data to the gas detection alarm 1. When the gas concentration reaches the preset alarm threshold, the gas detection alarm 1 triggers the alarm 2 to sound an alarm.

[0022] Reference Figure 2 and Figure 3 The limiting mechanism includes a fixed chuck 15, which is symmetrically fixedly installed on both sides of the outer surface of the bearing support 7 near the support shaft 8. Movable chucks 16 are fitted on both sides of the outer surface of the support shaft 8. External threads are provided on both sides of the outer surface of the support shaft 8. Limiting nuts 17 are threadedly connected to both sides of the support shaft 8. One side of the limiting nut 17 abuts against the movable chuck 16. A groove is provided at the abutting position of both the fixed chuck 15 and the movable chuck 16. The fixed chuck 15 and the movable chuck 16 abut against each other and engage.

[0023] When the detection position needs to be adjusted, the operator loosens the limit nut 17. At this time, the support shaft 8 can rotate relative to the bearing support 7, driving the support rod 9 to rotate, thereby adjusting the position and angle of the fan 12 and the wide-angle mask 14 on the mounting bracket 11. After the adjustment is in place, the limit nut 17 is tightened. The limit nut 17 pushes the movable chuck 16 to engage tightly with the fixed chuck 15, fixing the support shaft 8 and keeping the support rod 9 at the set angle.

[0024] Reference Figure 2 and Figure 4 A threaded hole 18 is provided on the upper surface of the positioning plate 4 near the middle position of the two limiting posts 5. A through hole No. 1 is provided at the middle of the top of the mounting block 6. A fastening bolt 19 is threadedly connected to the upper surface of the mounting block 6 through the through hole No. 1 and extending into the threaded hole 18.

[0025] By fitting the mounting block 6 onto the outer surface of the limiting post 5, aligning the first through hole and the threaded hole 18, and rotating the fastening bolt 19 to limit the installation in the threaded hole 18, the mounting block 6 is fixed on the upper surface of the positioning plate 4, which facilitates the easy assembly and disassembly of the mounting block 6.

[0026] The implementation principle of a gas detection leak alarm device according to an embodiment of this application is as follows: When the device is working, if the detection position needs to be adjusted, the operator loosens the limit nut 17. At this time, the support shaft 8 can rotate relative to the bearing support 7, driving the support rod 9 to rotate, thereby adjusting the position and angle of the fan 12 and the wide-angle mask 14 on the mounting frame 11. After the adjustment is in place, the limit nut 17 is tightened. The limit nut 17 pushes the movable chuck 16 to engage tightly with the fixed chuck 15, fixing the support shaft 8 and keeping the support rod 9 at the set angle.

[0027] The micro motor 13 starts, driving the fan 12 to rotate. The wide-face mask 14 increases the gas collection area, accelerating the flow of surrounding gas and causing the leaked gas to flow more quickly and concentratedly towards the detection head 3. The detection head 3 detects the gas concentration in real time and transmits the data to the gas detection alarm 1. When the gas concentration reaches the preset alarm threshold, the gas detection alarm 1 triggers the alarm 2 to sound an alarm, reminding relevant personnel to take timely measures, thereby achieving rapid and accurate detection and alarm of gas leaks.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally: 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.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A leakage alarm device for gas detection, comprising a gas detection alarm instrument (1), an alarm (2) is fixedly installed on one side of the outer surface of the gas detection alarm instrument (1), and a detection head (3) is arranged on the lower bottom surface of the gas detection alarm instrument (1), characterized in that: The gas detection alarm instrument (1) bottom end is close to the detection head (3) and is fixedly installed with the positioning plate (4), the positioning plate (4) upper surface both sides and the front end face are symmetrically fixedly installed with the limiting column (5), the outer surfaces of adjacent two limiting columns (5) are installed with the mounting block (6), the mounting block (6) front end face middle part is fixedly installed with the bearing support (7), one end side of the bearing support (7) is rotatably installed with the support shaft (8), the support shaft (8) outer surface middle part is hinged with the support rod (9), one end side of the support rod (9) is rotatably installed with the damping bearing seat (10), the damping bearing seat (10) bottom end is fixedly installed with the mounting bracket (11), the mounting bracket (11) is installed with the air supply fan (12), one end middle part of the air supply fan (12) is provided with the micro motor (13), one side of the mounting bracket (11) is fixedly installed with the wide mouth cover (14), the outer surface of the support shaft (8) is also provided with a limiting mechanism for adjusting the support rod (9) to be fixed at different angles.

2. The leak alarm device for gas detection according to claim 1, characterized in that: The limiting mechanism comprises a fixed chuck (15), the fixed chuck (15) is symmetrically fixedly installed on the outer surfaces of the bearing supports (7) on both sides near the support shaft (8), the outer surfaces of the support shafts (8) on both sides are sleeved with movable chucks (16), the outer surfaces of the support shafts (8) on both sides are provided with external threads, the support shafts (8) on both sides are threadedly connected with limiting nuts (17), and one side of the limiting nut (17) abuts against the movable chuck (16).

3. The leak alarm device for gas detection according to claim 1, characterized in that: Screw holes (18) are throughly formed in the middle positions of the upper surfaces of the positioning plates (4) near the two limiting columns (5), the top ends of the mounting blocks (6) are throughly provided with first through holes, and the upper surfaces of the mounting blocks (6) extend to the screw holes (18) through the first through holes and are threadedly connected with fastening bolts (19).

4. The leak alarm device for gas detection according to claim 1, characterized in that: Second through holes are throughly formed in the upper surfaces of the mounting blocks (6) on both sides, the limiting columns (5) have an outer diameter smaller than the inner diameters of the second through holes, and the limiting columns (5) and the second through holes are mutually embedded.

5. The leak alarm device for gas detection according to claim 2, characterized in that: The fixed chucks (15) and the movable chucks (16) are provided with clamping grooves at the positions where one side of each abuts against the other, and the fixed chucks (15) and the movable chucks (16) abut against and clasp each other.

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