Protective device for fixed gas detector

Abstract

This utility model relates to the field of material testing or analysis technology, specifically to a protective device for a fixed gas detector. The device includes a protective box, which comprises a protective section and a gas circulation section located below the protective section. The protective section includes a top cover and side walls. The gas circulation section includes an outer baffle and an inner baffle, spaced apart and arranged along the lower edge of the side walls. Both the outer and inner baffles have through holes for air circulation, and these through holes are staggered. This utility model's protective box not only protects the gas detector but also allows for natural air diffusion and circulation inside and outside the box, eliminating the need for motors, power supplies, and other components. This solves the problem of existing protective devices requiring forced airflow and resulting in complex structures and inconvenience.

Description

Technical Field

[0001] This utility model relates to the field of material testing or analysis technology, specifically to a protective device for a fixed gas detector. Background Technology

[0002] A gas detector is an instrument that uses gas sensors to detect the concentration and type of gases in the environment. It is mainly divided into portable gas detectors, handheld gas detectors, fixed gas detectors, and online gas detectors. It can detect a variety of gases such as hydrogen sulfide, carbon monoxide, sulfur dioxide, ammonia, ozone, and combustible gases. Therefore, it is widely used in gas detection in various places such as petrochemical, coal, metallurgy, chemical and factory environmental monitoring.

[0003] Fixed gas detectors are mostly used in chemical, petroleum, and other industrial fields. The production processes in these fields may generate harmful gases, making their detection crucial. For example, gas extraction plants typically have numerous gas detectors for detecting different gases, with toxic gas detectors accounting for nearly half. To ensure safe production, gas extraction plants regularly shut down for maintenance. During maintenance, because fixed gas detectors are in fixed positions, maintenance tools or equipment may accidentally bump into them, causing malfunctions or damage. This is especially true when maintaining wastewater treatment plants, where the dredging process may release harmful gases such as hydrogen sulfide. Therefore, gas detectors installed at wastewater treatment plants must continue operating to ensure worker safety. However, tools and equipment such as shovels and excavators used for on-site dredging may damage the gas detectors, causing problems such as damage to sensor components or loosening of circuit board connections. The dredged silt may also contaminate the gas detectors and affect their accuracy. Therefore, these gas detectors need to be protected to prevent them from being affected. At the same time, it is also necessary to ensure that the installed protective devices can circulate normally with the outside air to complete the gas detector's detection work.

[0004] Chinese utility model patent document CN211825936U, with authorization announcement date of 2020 / 10 / 30, discloses an environmental gas detection device for factories. The device includes a protective box containing a gas detector. Dustproof mechanisms are installed on both sides of the protective box, each including an air pipe, a protective cover, and a filter. One of the air pipes has an internal air intake mechanism comprising a motor and blades. The protective box protects the gas detector, and the air intake mechanism within the dustproof mechanism draws air into the protective box for the gas detector to perform detection.

[0005] The device can simultaneously meet the requirements of protecting the gas detector and ensuring air circulation inside and outside the protective box. However, the motor needs to be powered by a fixed or mobile power source. Fixed power sources require frequent disconnection and reconnection operations, and the maintenance environment has a significant impact on the wiring. Mobile power sources not only occupy on-site space, but also increase unnecessary workload due to frequent charging. Utility Model Content

[0006] The purpose of this utility model is to provide a protective device for a fixed gas detector, so as to solve the problem that existing protective devices require a power supply due to the need for forced air supply, which leads to complex structure and inconvenience in use.

[0007] To achieve the above objectives, the protective device for the fixed gas detector of this utility model adopts the following technical solution: A protective device for a fixed gas detector includes a protective box. The protective box includes a protective part and a gas flow part located below the protective part. The protective part includes a top cover and a side wall. The gas flow part includes an outer baffle and an inner baffle that are spaced apart and arranged along the lower edge of the side wall. Both the outer baffle and the inner baffle are provided with through holes for air flow, and the through holes on the outer baffle and the through holes on the inner baffle are staggered.

[0008] Furthermore, the gas flow section is provided with a fixing component for fixing the gas detector to the protective box. The fixing component includes a top support rod, and one end of the top support rod that extends into the protective box is provided with a gripper for clamping the gas detector.

[0009] Furthermore, a guide sleeve is provided between the outer baffle and the inner baffle, and the top support rod passes through the guide sleeve and can move along the guide sleeve.

[0010] Furthermore, the inner baffle is provided with hinge seats on both sides of the guide sleeve, and the guide sleeve and the hinge seats are hinged to allow the guide sleeve to swing in its radial direction.

[0011] Furthermore, the guide sleeve is also provided with a set screw for tightening the top support rod.

[0012] Furthermore, the top support rods are arranged in pairs facing each other at the diagonal corners of the gas flow section to form a set of top support rods.

[0013] Furthermore, the top support rod assembly is provided in at least two sets, and the at least two sets of top support rod assemblies are arranged vertically and vertically at different diagonal positions of the gas flow section.

[0014] Furthermore, the outer baffle and the inner baffle are respectively provided with a frame-shaped top plate and a frame-shaped bottom plate for connecting the inner and outer baffles, and the upper surface of the frame-shaped top plate near the side wall is connected to the lower end face of the side wall.

[0015] Furthermore, a transparent display panel for observing the gas detector is provided on the top cover and / or the side wall.

[0016] Furthermore, the through hole is a vertical strip-shaped through hole.

[0017] Beneficial Effects: This invention is a pioneering creation regarding the protective device for fixed gas detectors. The protective device includes a protective housing, which comprises a protective section and a gas flow section located below the protective section. The protective section protects the gas detector, ensuring it is not damaged or malfunctions when subjected to external impacts. The inner and outer baffles of the gas flow section also resist external interference and prevent impurities from entering the protective housing. Simultaneously, the staggered through-holes on the inner and outer baffles allow for natural air diffusion and circulation inside and outside the protective housing, eliminating the need for motors, power supplies, and other components. This solves the problem of existing protective devices requiring forced airflow and resulting in complex structures and inconvenience. Attached Figure Description

[0018] Figure 1 This is a front view of the protective device for a fixed gas detector according to this utility model. Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 The left view; Figure 4 for Figure 1 A partial sectional view; Figure 5 This is a top view of the gas flow section; Figure 6 A bottom view of the gas flow section; Figure 7 This is a schematic diagram of the guide sleeve structure; Figure 8 This is a schematic diagram illustrating the installation of an embodiment of the protective device for a fixed gas detector according to this utility model.

[0019] In the diagram: 1. Protective box; 2. Protective section; 3. Gas circulation section; 4. Top cover; 5. Side wall; 6. Outer baffle; 7. Inner baffle; 8. Top support rod; 9. Claw; 10. Guide sleeve; 11. Hinge seat; 12. Pin; 13. Top screw; 14. Frame-shaped base plate; 15. Transparent display panel; 16. Vertical through hole; 17. Gas detector; 18. Support column. Detailed Implementation

[0020] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0021] The protective device for the fixed gas detector of this utility model utilizes inner and outer baffles and staggered vertical through holes on the baffles to not only protect the gas detector but also meet the need for normal air circulation inside and outside the protective box.

[0022] Based on the above inventive concept, as a basic solution, such as Figure 1-8 As shown, the protective device for the fixed gas detector of this utility model includes a protective box 1. The protective box 1 can prevent the gas detector 17 from being bumped or knocked by external objects, thereby ensuring the accuracy of the gas detector 17 when measuring gas. The protective box 1 includes a protective part 2 and a gas flow part 3 located below the protective part 2. The protective part 2 mainly serves to protect the gas detector 17, while the gas flow part 3 is mainly designed to allow outside air to naturally diffuse into the protective box 1 for the gas detector 17 to perform its detection work. The protective part 2 includes a top cover 4 and side walls 5. The top cover 4 and side walls 5 of the protective part 2 can be made of high-strength materials, so that they can withstand large external impacts or knocks without being damaged. The gas circulation section 3 includes an outer baffle 6 and an inner baffle 7 arranged along the lower edge of the side wall 5. The inner and outer baffles can also serve as part of the protection for the gas detector 17, helping to resist external impacts and preventing mud splashes or other impurities from entering the interior of the protective box 1 and affecting the use of the gas detector 17. Both the outer baffle 6 and the inner baffle 7 are provided with through holes for air circulation. These through holes can meet the needs of normal diffusion and circulation of air inside and outside the protective box 1. Furthermore, the through holes on the outer baffle 6 and the through holes on the inner baffle 7 are staggered. This staggered arrangement design can better prevent external impurities from entering the protective box 1, while also meeting the needs of natural diffusion and circulation of air inside and outside the protective box 1.

[0023] As a preferred implementation method, such as Figure 4-6As shown, the gas flow section 3 is equipped with a fixing component for fixing the gas detector 17 to the protective box 1. During the use of this protective device, if subjected to a large external force, the protective box 1 may shift, causing the gas detector 17 to collide with the inner wall of the protective box 1, thus rendering the protective device ineffective. Therefore, the fixing component can fix the gas detector 17 inside the protective box 1, helping to prevent relative movement between the gas detector 17 and the protective box 1. The fixing component includes a top support rod 8, and one end of the top support rod 8 extending into the protective box 1 is provided with a gripper 9 for pressing the gas detector 17. The gripper 9 can fit well with the support column 18 of the protected gas detector 17, thereby ensuring a more stable press against the support column 18. In addition, the shape or size of the gripper 9 can be adjusted according to the support column 18 of different gas detectors 17. The column 18 is specifically adjusted to ensure that the claw 9 can fit well against the support column 18 of the gas detector 17, thereby improving the stability of the support. The design of the top support rod 8 and the claw 9 can enhance the overall structural strength of the protective box 1. The top support rod 8 and the claw 9 at its end mainly play the role of tightening and fixing the support column 18 of the gas detector 17. By tightening the support column 18, it can effectively prevent the gas detector 17 from shaking or tilting inside the protective box 1, thereby ensuring the effectiveness of the protective device in protecting the gas detector 17. In other embodiments, a base plate can be set at the bottom of the protective box 1, and the support column 18 of the gas detector 17 can be installed on the base plate. Compared with the preferred embodiment, this method is not conducive to disassembly during the installation and maintenance of the device. However, during the normal use of the protective box 1, setting a base plate can also achieve the purpose of fixing the gas detector 17.

[0024] In a preferred embodiment, a guide sleeve 10 is provided between the outer baffle 6 and the inner baffle 7. The top support rod 8 passes through the guide sleeve 10 and can move along the guide sleeve 10. The guide sleeve 10 helps to flexibly adjust the position of the top support rod 8 to better press against the support column 18 of the gas detector 17. Therefore, the adjustable top support rod 8 can also adapt to support columns 18 of different sizes, thereby improving the applicability and flexibility of the protective box 1. Furthermore, the design of the guide sleeve 10 can further ensure that the top support rod 8 can maintain the correct direction and position when passing through the guide sleeve 10, which helps to prevent the top support rod 8 from shifting or tilting during movement, thereby ensuring that they can accurately press against the support column 18. In other embodiments, the top support rod 8 is directly fixed to the inner baffle 7, and then an adjustable section is provided on the top support rod 8. By adjusting the adjustable section to change the length of the top support rod 8, the purpose of adapting to support columns 18 of different sizes can also be achieved.

[0025] In a preferred embodiment, the inner baffle 7 is provided with hinge seats 11 located on both sides of the guide sleeve 10, and the guide sleeve 10 and the hinge seats 11 are hinged to allow the guide sleeve 10 to swing in its radial direction. This hinge design allows the guide sleeve 10 to drive the top support rod 8 passing through it to swing. This swingability allows the top support rod 8 to meet the needs of supporting the support column 18 at different positions and angles, thereby improving the applicability and flexibility of the fixing component. The hinge between the guide sleeve 10 and the hinge seats 11 can be completed by the pin 12. The pin 12 has a simple structure, which is helpful for processing and installation, and can also reduce the processing cost of the device.

[0026] As a preferred implementation method, such as Figure 7 As shown, the guide sleeve 10 is also provided with a set screw 13 for tightening the top support rod 8. The set screw 13 can be used to fix the top support rod 8 circumferentially within the guide sleeve 10 to prevent the top support rod 8 from changing position or loosening during use. An internal thread can be provided on the guide sleeve 10 to make the fit between the set screw 13 and the guide sleeve 10 smoother. When installing, adjusting or removing the top support rod 8, first loosen the set screw 13, then move the top support rod 8 within the guide sleeve 10 to the desired position, and then tighten the set screw 13 to fix the top support rod 8. The set screw 13 is used to support the top support rod. After the rod 8 is fixed, it also helps to prevent wear caused by relative movement between the top support rod 8 and the guide sleeve 10. The set screw 13 has the advantages of easy installation and adjustment, making the assembly process more flexible and efficient. Moreover, the purchase cost of the set screw 13 is low, thereby reducing the cost of the protective device. In other embodiments, pins can be used. Although pins may loosen during repeated insertion and removal, the protective device requires fewer disassemblies after the top support rod 8 is installed. Therefore, pins can also achieve the purpose of fixing the top support rod 8.

[0027] In a preferred embodiment, the top support rods 8 are arranged in pairs facing each other at opposite corners of the gas flow section 3 to form a set of top support rods. The arrangement of the top support rods can improve the stability of fixing the gas detector 17. The diagonal design can maximize the use of the geometry of the protective box 1 to form a stable triangular support structure. In particular, when the protective box 1 is subjected to large external forces or vibrations, this structure can also maintain good stability. Moreover, the diagonal arrangement also helps to maximize the angle at which the top support rods 8 can swing with the guide sleeve 10, so as to adapt to the situation where the gas detector 17 cannot be centered in the protective box 1 due to structural conflicts or other abnormalities. In addition, there are at least two sets of top support rods, and at least two sets of top support rods are arranged vertically staggered at different corners of the gas flow section 3. Setting multiple sets of top support rods at different corners can further enhance the overall stability of the protective device. The vertical staggered design is also to further enhance the stability of the structure. Moreover, the vertical staggered design can also make more effective use of the space inside the protective box 1.

[0028] As a preferred implementation method, such as Figure 6 As shown, the outer baffle 6 and the inner baffle 7 are respectively provided with a frame-shaped top plate and a frame-shaped bottom plate 14 for connecting the inner and outer baffles. The frame-shaped top plate and the frame-shaped bottom plate 14 can strengthen the connection between the inner and outer baffles, thereby making the overall structure of the protective box 1 more stable and helping to avoid the problem of one of the baffles tilting when it is bumped. Furthermore, the upper surface of the frame-shaped top plate near the side wall 5 is connected to the lower end surface of the side wall 5. Compared with the inner and outer baffles being directly connected to the side wall 5, the frame-shaped top plate can increase the connection area and thus improve the connection strength at this position.

[0029] As a preferred implementation method, such as Figure 1-4 As shown, a transparent viewing panel 15 for observing the gas detector 17 is provided on the top cover 4 and / or the side wall 5. The transparent viewing panel 15 allows the staff to directly observe the display screen, indicator lights, or operating interface of the gas detector 17 without disassembling the protective box 1. This enables the staff to understand the working status, measurement results, or alarm information of the detector in real time, and thus respond in a timely manner. This not only saves time, but also helps to avoid the potential risks caused by frequent disassembly of the protective box 1. The transparent viewing panel 15 can be set separately on the top cover 4 or the side wall 5 according to needs or preferences. It can also be set as an L-shaped viewing panel so that it can cover the top cover 4 and the side wall 5 at the same time to increase the observation area. In other embodiments, the transparent viewing panel 15 can be installed in a detachable manner on the top cover 4 and / or the side wall 5 so that the staff can clean it regularly. However, whether it is fixedly installed or detachably installed, it will not affect its function as an observation window.

[0030] In a preferred embodiment, the through hole is a vertical strip-shaped through hole 16. The design of the vertical strip-shaped through hole 16 can increase the space required for air circulation, thereby shortening the time required for the natural diffusion and uniform circulation of air inside and outside the protective box 1. In addition, the vertical strip-shaped through hole 16 is more conducive to the arrangement on the inner and outer baffles, which can not only ensure the requirement of staggered arrangement on the inner and outer baffles, but also maximize the utilization of the surface area of ​​the inner and outer baffles to arrange a larger number of through holes, and also make the protective device more aesthetically pleasing. In other embodiments, it can be set as a circular through hole. It should be noted that the circular through holes on the inner and outer baffles should be staggered to prevent impurities from entering the protective box 1. Compared with this preferred embodiment, although the utilization rate of the surface area of ​​the inner and outer baffles is relatively low, the circular through hole can still achieve the purpose of air circulation inside and outside the protective box 1.

[0031] The specific usage process of the protective device for the fixed gas detector 17 of this utility model is as follows: Figure 1-8 As shown, when installing the protective device, the screws used to fix the top support rods 8 in the circumferential direction can be loosened first. Then, each top support rod 8 is pulled outward so that the space formed between the claws 9 on each top support rod 8 is greater than the maximum size of the end of the gas detector 17. Then, the protective box 1 is lowered from above the gas detector 17 to a position where the panel of the gas detector 17 is roughly flush with the transparent display panel 15. Next, each top support rod 8 is pushed toward the support column 18 of the gas detector 17 inside the protective box 1, and the claws 9 at the end of the top support rod 8 are pressed against the support column 18. Then, the screws are tightened to fix the top support rod 8. When the gas detector 17 cannot be in the center position of the protective box 1 due to the influence of the structure of the gas detector 17 or other circumstances, the angle of the guide sleeve 10 and the length of the top support rod 8 extending into the protective box 1 can be adjusted so that each claw 9 can continue to fit against the support column 18 of the gas detector 17.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A protective device for a fixed gas detector, comprising a protective housing, characterized in that, The protective box includes a protective section and a gas circulation section located below the protective section. The protective section includes a top cover and a side wall. The gas circulation section includes an outer baffle and an inner baffle that are spaced apart and arranged along the lower edge of the side wall. Both the outer baffle and the inner baffle are provided with through holes for air circulation, and the through holes on the outer baffle and the through holes on the inner baffle are staggered.

2. The protective device for a fixed gas detector according to claim 1, characterized in that, The gas flow section is provided with a fixing component for fixing the gas detector to the protective box. The fixing component includes a top support rod, and one end of the top support rod that extends into the protective box is provided with a gripper for clamping the gas detector.

3. The protective device for a fixed gas detector according to claim 2, characterized in that, A guide sleeve is provided between the outer baffle and the inner baffle, and the top support rod passes through the guide sleeve and can move along the guide sleeve.

4. The protective device for a fixed gas detector according to claim 3, characterized in that, The inner baffle is provided with hinge seats on both sides of the guide sleeve, and the guide sleeve and the hinge seats are hinged to allow the guide sleeve to swing in its radial direction.

5. The protective device for a fixed gas detector according to claim 3 or 4, characterized in that, The guide sleeve is also provided with a set screw for tightening the top support rod.

6. The protective device for a fixed gas detector according to claim 2, characterized in that, The top support rods are arranged in pairs facing each other at the diagonal of the gas flow section to form a set of top support rods.

7. The protective device for a fixed gas detector according to claim 6, characterized in that, The top support rod assembly is provided in at least two sets, and the at least two sets of top support rod assemblies are arranged vertically and vertically at different diagonal positions of the gas flow section.

8. The protective device for a fixed gas detector according to claim 1, characterized in that, The outer baffle and the inner baffle are respectively provided with a frame-shaped top plate and a frame-shaped bottom plate for connecting the inner and outer baffles, and the upper surface of the frame-shaped top plate near the side wall is connected to the lower end face of the side wall.

9. The protective device for a fixed gas detector according to claim 1, characterized in that, A transparent display panel for observing the gas detector is provided on the top cover and / or the side wall.

10. The protective device for a fixed gas detector according to claim 1, characterized in that, The through hole is a vertical strip-shaped through hole.

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