Industrial area harmful gas multi-parameter online detection equipment and detection method thereof

Abstract

The invention discloses multi-parameter online detection equipment for harmful gas in an industrial area, belongs to the technical field of industrial gas detection, and aims to solve the problems of complicated pressure regulation, poor detection stability, insufficient protection and structural redundancy of existing equipment. According to the technical scheme, the device is characterized by comprising an auxiliary rectangular box, a main rectangular box, a protective top shell, an equipment upper shell, an equipment lower shell and matched parts, the main rectangular box communicates with the auxiliary rectangular box through a rectangular hole, a plugging assembly is arranged in the auxiliary rectangular box, a driving assembly is arranged in the protective top shell, a piston plate II is slidably connected into the main rectangular box, and a piston plate I is slidably connected into the auxiliary rectangular box; the driving assembly is in linkage with the two piston plates to achieve pressure buffering, the plugging assembly is matched with pressure relief and compensation during pressure extreme value, the multifunctional gas detectors are arranged in the upper shell and the lower shell of the equipment and matched with the gas inlet pipe, the connecting pipe and the gas outlet pipe to complete detection, self-adaptive pressure adjustment is achieved through mechanical linkage, additional driving elements are not needed, and the sealing and protecting effects are good. The device is compact in structure and suitable for continuous gas detection in industrial areas.

Description

Technical Field

[0001] This invention relates to the field of industrial gas detection technology, and in particular to online detection equipment and methods for multi-parameter hazardous gases in industrial areas. Background Technology

[0002] During industrial production, the leakage and accumulation of harmful gases can easily lead to safety accidents, damage the working environment, and threaten the health of workers. Therefore, industrial areas need to be equipped with online detection equipment for harmful gases to monitor changes in gas composition and concentration in real time, ensuring safe production.

[0003] Existing online detection equipment typically extracts the gas to be tested through fixed pipelines, analyzes it through a detection module, and then discharges it. However, gas pressure in industrial areas often fluctuates due to production conditions. When the pressure is too high, it can easily impact the internal components of the detection module, affecting detection accuracy or even damaging the equipment. When the pressure is too low, the gas flow rate is insufficient, resulting in a delayed detection response and an inability to promptly report changes in gas concentration.

[0004] To address pressure fluctuations, some equipment has added pressure regulating components. However, these components are mostly independent control structures, requiring additional drive elements and control modules. This not only increases the overall size and manufacturing cost of the equipment but also necessitates complex linkage debugging and results in poor adaptability. Furthermore, the existing equipment has a simplistic sealing and pressure relief structure design. When the pressure exceeds the regulation range, it cannot quickly relieve pressure and compensate, easily leading to gas retention or leakage, further affecting detection stability and equipment operational safety. In addition, some equipment has inadequate protective structures, allowing external dust and debris to easily penetrate internal pipelines and components, shortening equipment lifespan and increasing maintenance frequency and costs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the fact that gas pressure in industrial areas often fluctuates due to production conditions, and that excessively high pressure can easily impact the internal components of the detection module, affecting detection accuracy or even damaging the equipment; and that insufficient gas flow rate when the pressure is too low can lead to delayed detection response and failure to provide timely feedback on changes in gas concentration. The invention proposes a multi-parameter online detection device and method for hazardous gases in industrial areas.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An online detection device for multiple parameters of hazardous gases in industrial areas includes an auxiliary rectangular box, one side of which is fixedly connected to a main rectangular box. Two symmetrical rectangular holes are opened on the inner wall of one side of the main rectangular box. The auxiliary rectangular box and the main rectangular box are connected through the rectangular holes. Two sets of sealing components are installed inside the auxiliary rectangular box. Piston plate II is slidably assembled inside the main rectangular box, and piston plate I is slidably assembled inside the inner wall of the auxiliary rectangular box. The tops of the main rectangular box and the auxiliary rectangular box are fixedly connected to the same protective top shell, and a drive assembly is provided inside the protective top shell. The main rectangular box has round holes on both sides, and the air intake pipe and connecting pipe are fixedly connected to both sides respectively. The upper and lower shells are connected to the top of the lower shell by screws. A multi-functional gas detector is fixed inside the lower shell. The connecting pipe is connected to one side of the upper shell, and the other side of the upper shell is fixed and connected to the outlet pipe. The gas to be detected enters the main rectangular box through the inlet pipe, and then enters the upper shell through the connecting pipe. After being detected by the multi-functional gas detector, it is discharged through the outlet pipe. The drive component links piston plate I and piston plate II to adjust the gas pressure. The sealing component adapts to the opening and closing of the rectangular hole to achieve pressure relief and sealing switching.

[0007] In one possible design, the sealing assembly includes two main sealing plates slidably mounted on one side of the main rectangular box. The two main sealing plates are arc-shaped at one end close to each other. Sealing side plates are fixed to both sides of the main sealing plates. Two symmetrical compression springs III are provided between the main sealing plates and the inner wall of one side of the auxiliary rectangular box. Both ends of the compression springs III abut against the main sealing plates and the inner wall of the auxiliary rectangular box through spring seats. Two symmetrical push rods are fixed to one side of the piston plate II. The push rods cooperate with the main sealing plates. Two symmetrical limiting blocks are fixed to the inner wall of the bottom of the main rectangular box. The limiting blocks limit the piston plate II to prevent it from moving excessively. The push rods can be inserted into the rectangular holes to push the main sealing plates apart, realizing the external leakage and depressurization of gas.

[0008] In one possible design, the drive assembly includes a rotating shaft rotatably mounted on the inner wall of the top of the protective top shell. A gear II is rotatably sleeved on the outer wall of the rotating shaft, and gear I is rotatably connected to the outer wall of the rotating shaft via a one-way bearing. A sliding plate I is slidably mounted on the top of the main rectangular box, and a sliding plate II is slidably mounted on the top of the auxiliary rectangular box. A rack II is fixedly connected to one side of the sliding plate II, and the rack II meshes with gear II. A rack I is fixedly mounted on one side of the sliding plate I, and the rack I meshes with gear I. Multiple protruding plates are fixedly connected to one side of the rack II. The one-way bearing enables unidirectional transmission of the rotating shaft, preventing piston plate I from moving when piston plate II resets. The rack and gear work together to convert the linear motion of the sliding plate into the rotational motion of the rotating shaft, realizing the linkage of the two piston plates.

[0009] In one possible design, two symmetrical sliding baffles are fixedly connected to one side of the piston plate II. One end of each sliding baffle slides through one side of the main rectangular box and is fixedly connected to the same rectangular side plate II. Multiple compression springs II are provided between the piston plate II and the inner wall of one side of the main rectangular box. The two ends of the compression springs II abut against the piston plate II and the inner wall of the main rectangular box through spring seats. Two symmetrical guide rods are fixedly connected to one side of the piston plate I. One end of each guide rod slides through one side of the auxiliary rectangular box and is fixedly connected to the same rectangular side plate I. Multiple compression springs I are provided between the piston plate I and the inner wall of one side of the auxiliary rectangular box. The two ends of each compression spring I abut against the piston plate I and the inner wall of the auxiliary rectangular box through spring seats. A connecting side plate is fixedly mounted on one side of the top of both rectangular side plate I and rectangular side plate II. A connecting round rod is fixedly mounted on one side of the connecting side plate. One end of each connecting round rod is fixedly connected to sliding plate I and sliding plate II, respectively. The compression springs I and II can drive the corresponding piston plates to reset. The connecting component moves the piston plates to the sliding plates to trigger the drive assembly.

[0010] In one possible design, a pusher plate is fixedly mounted on the top of one of the main sealing plates, and a clearance hole is opened on the top of the auxiliary rectangular box. The top of the pusher plate slides through the clearance hole and extends into the protective top shell. A clearance groove is opened on one side of the pusher plate, and a T-shaped block slides through the pusher plate. One end of the T-shaped block extends to the side above the clearance groove and is fixedly mounted with a limiting plate. The same return spring is provided between the limiting plate and the inner wall of one side of the clearance groove. One side of the convex plate is arc-shaped. The convex plate pushes the limiting plate to move and is reset by the return spring to realize the step-by-step movement of rack II. The main sealing plate moves up and drives the limiting plate to disengage from the convex plate, which facilitates the reset of piston plate I.

[0011] In one possible design, both the auxiliary rectangular box and the main rectangular box have fixed supports at their bottoms, and one side of the auxiliary rectangular box is fixedly connected to and connected to an air supply pipe; the supports ensure stable fixation of the equipment, and the air supply pipe can draw gas into the auxiliary rectangular box for storage, providing backup gas for pressure compensation.

[0012] In one possible design, a protective cover II is fixedly mounted on one side of the auxiliary rectangular box, and a protective cover I is fixedly mounted on one side of the main rectangular box. Both the protective cover I and the protective cover II have multiple heat dissipation holes on their sides. The protective cover prevents external dust from entering, and the heat dissipation holes dissipate internal heat in a timely manner, thus preventing the components from aging due to high temperature.

[0013] In one possible design, the multifunctional gas detector uses a stainless steel shell, and compression springs I, II, and III are all made of high-strength alloy steel; the stainless steel shell improves corrosion resistance, and the high-strength alloy steel ensures the stability of the spring force and service life.

[0014] In one possible design, the convex plates are evenly arranged along the length of rack II, and the sliding fit clearance between the T-block and the push plate is no more than 0.2mm; the evenly arranged convex plates ensure the stepping accuracy of rack II, and the minimal fit clearance ensures smooth movement of the T-block and improves the reliability of the structural linkage.

[0015] The detection method of multi-parameter online detection equipment for hazardous gases in industrial areas includes the following steps: S1. The gas to be tested is sent into the main rectangular box through the inlet pipe, and then flows into the equipment shell through the connecting pipe. After the parameters are detected by the multi-functional gas detector, it is discharged through the outlet pipe. S2. During the detection process, when the air pressure inside the main rectangular box increases, it pushes the piston plate II to move and squeezes the compression spring II. Through the drive assembly, the piston plate I squeezes the compression spring I, and some gas is drawn into the auxiliary rectangular box through the air delivery pipe for storage and later use. S3. When the air pressure decreases, the compression spring II drives the piston plate II to reset. The piston plate I is prevented from moving with the one-way bearing. During the movement of the piston plate II, the gas in the main rectangular box is pushed to stabilize the airflow. S4. When the air pressure exceeds the adjustment range, the piston plate II drives the push rod to insert into the rectangular hole, pushes the main sealing plate to separate and squeezes the compression spring III, and the gas is released through the rectangular hole to relieve pressure. S5. The main sealing plate moves up, causing the limiting plate to disengage from the convex plate. The compression spring I drives the piston plate I to reset, and the spare gas in the auxiliary rectangular box is sent back to the main rectangular box through the rectangular hole to compensate for the gas pressure. After the gas pressure rises, the piston plate II resets, and the main sealing plate closes the rectangular hole. The reciprocating cycle realizes continuous detection.

[0016] In this application, during use, the gas to be detected is sent into the interior of the main rectangular box through the inlet pipe, then into the interior of the connecting pipe through the main rectangular box, and finally into the interior of the equipment shell. After being detected by the multi-functional gas detector, it is discharged through the outlet pipe. The gas supply pipe is connected to the harmful gas through the pipeline. During the testing process, the gas pressure will change. When the pressure increases, it will push the piston plate II on the side to move laterally. The piston plate II squeezes and compresses the spring II and drives the sliding baffle on the side to move laterally. The sliding baffle drives the rectangular side plate II to move laterally. By connecting the side plate and the connecting rod, the sliding plate I can be driven to move laterally. The sliding plate I drives the rack I to move laterally. The rack I drives the gear I to rotate. The gear I drives the rotating shaft to rotate. The rotating shaft drives the gear II to rotate. The gear II drives the rack II to move laterally. The rack II drives the sliding plate II to move laterally. At this time, sliding plate II drives rectangular side plate I to move laterally through connecting side plate and connecting round rod. Rectangular side plate I drives guide rod to move laterally, and guide rod drives piston plate I to move laterally. Piston plate I squeezes compression spring I and draws gas into the interior of auxiliary rectangular box through air supply pipe for backup. When the pressure decreases, the elastic force of compression spring II pushes piston plate II to reset. Piston plate II can drive push rod to move laterally. When rectangular side plate II resets, due to the one-way bearing, it will not drive piston plate I to move. When piston plate II moves, it will push a small amount of gas inside the main rectangular box to help increase airflow. Furthermore, the limiting block can limit the piston plate II. If the pressure still cannot be adjusted, the push rod will be inserted into the rectangular hole and push the two main sealing plates away from each other. The two main sealing plates will squeeze and compress the spring III. The side of the two main sealing plates that are close to each other is arc-shaped. The size of the push rod is smaller than the size of the rectangular hole, which can ensure that the gas can leak out normally. Furthermore, as rack II moves, the arc-shaped surface at one end of the convex plate continuously pushes the limiting plate, thereby causing the limiting plate to move laterally. The limiting plate squeezes the reset spring and causes the T-block to move. When one convex plate disengages from the limiting plate, the limiting plate resets and blocks the next convex plate again. When one of the main sealing plates moves upward, it causes the push plate to move upward, which in turn causes the limiting plate to move upward. At this time, the limiting plate no longer blocks the convex plate, and the convex plate moves from inside the limiting plate. Through the pressure of the compression spring I, it can then drive the piston plate I to move laterally. The piston plate I drives the rectangular side plate I, the guide rod, and multiple convex plates to reset. Gas is discharged through the rectangular hole to compensate for the gas pressure. After the gas pressure gradually increases, the piston plate II moves again, and the rectangular hole closes. This process repeats, making it convenient to use. Beneficial effects

[0017] When the gas pressure inside the main rectangular chamber increases, it pushes piston plate II to move, which in turn drives piston plate I through the drive assembly, drawing some gas into the auxiliary rectangular chamber for storage and backup, thus achieving pressure buffering. When the pressure decreases, compression spring II pushes piston plate II to reset. Simultaneously, the unidirectional transmission characteristic of the one-way bearing prevents piston plate I from moving with it. During the movement of piston plate II, it can push gas out of the main rectangular chamber, improving airflow stability. When the pressure exceeds the normal adjustment range, the push rod pushes the main sealing plate to separate, allowing gas to leak and depressurize through the rectangular hole. This ensures that the internal components of the equipment are not subjected to high-pressure impacts. Furthermore, the arc-shaped end face design of the main sealing plate reduces gas resistance, ensuring a smooth depressurization process without affecting normal detection airflow.

[0018] The drive assembly, through the cooperation of rack, pinion, and one-way bearing, converts the linear motion of piston plate II into the synchronous linkage motion of piston plate I, simplifying the transmission structure while improving adjustment accuracy. The cooperation between the convex plate and the limiting plate enables the step-by-step movement of rack II, ensuring the orderly energy storage and reset of piston plate I; the reset spring drives the limiting plate to automatically reset, further improving the reliability of the structure's operation. Pressure regulation cycles can be completed without manual intervention, adapting to the needs of continuous industrial operation.

[0019] The sealing assembly, through the cooperation of the main sealing plate, sealing side plate, and compression spring III, achieves a tight seal of the rectangular hole in the non-depressurized state, preventing gas leakage from affecting the test results. Compression spring III can drive the main sealing plate to automatically reset, ensuring that the sealing structure closes quickly after depressurization. The protective covers I and II, along with the heat dissipation holes, not only prevent external dust and debris from entering the equipment, but also dissipate internal heat in a timely manner, preventing components from aging due to high temperatures, extending the service life of the equipment, and reducing maintenance costs.

[0020] The upper and lower housings of the device are detachably connected by screws, facilitating the maintenance and replacement of the multi-functional gas detector. The bracket ensures stable fixation of the device, adapting to installation scenarios in various industrial areas. Pressure regulation is achieved through mechanical linkage between components, eliminating the need for complex control modules, reducing manufacturing costs, lowering the failure rate, and ensuring continuous and stable detection operations, providing reliable protection for safe production in industrial areas. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the online detection device and method for multi-parameter hazardous gases in industrial areas proposed in this invention. Figure 2 This is a two-dimensional view from the second perspective of the online multi-parameter detection device and detection method for hazardous gases in industrial areas proposed in this invention. Figure 3 This is an exploded view of the upper and lower shells of the industrial area hazardous gas multi-parameter online detection device and its detection method proposed in this invention. Figure 4 This is an exploded view of the protective top shell and auxiliary rectangular box in the online detection equipment and method for multi-parameter hazardous gases in industrial areas proposed in this invention. Figure 5 This is an exploded view of gear I and auxiliary rectangular box in the online multi-parameter detection device and method for hazardous gases in industrial areas proposed in this invention. Figure 6 This is an exploded view of the main protective shell and gear II in the online multi-parameter detection device and method for hazardous gases in industrial areas proposed in this invention. Figure 7 This is a three-dimensional diagram of the auxiliary rectangular box and the main rectangular box in the online detection device and method for multi-parameter hazardous gases in industrial areas proposed in this invention; Figure 8 This is a three-dimensional cross-sectional view of the auxiliary rectangular box and the main rectangular box in the online detection device and method for multi-parameter hazardous gases in industrial areas proposed in this invention. Figure 9 This is a three-dimensional view of the main rectangular box and the main sealing plate in the online detection device and method for multi-parameter hazardous gases in industrial areas proposed in this invention; Figure 10 This is an exploded view of the push plate in the online detection device and method for multi-parameter hazardous gases in industrial areas proposed in this invention.

[0022] In the diagram: 1. Equipment shell; 2. Exhaust pipe; 3. Bracket; 4. Inlet pipe; 5. Protective cover I; 6. Protective cover II; 7. Protective top shell; 8. Connecting pipe; 9. Equipment lower shell; 10. Auxiliary rectangular box; 11. Heat dissipation hole; 12. Multifunctional gas detector; 13. Gas supply pipe; 14. Gear I; 15. Connecting round rod; 16. Sliding plate I; 17. Connecting side plate; 18. Sliding baffle; 19. Main rectangular box; 20. Round hole; 21. Guide rod; 22. Rectangular side plate I; 23. Rectangular... 24. Side plate II; 25. Convex plate; 26. Sliding plate II; 27. Rotating shaft; 28. Rack I; 29. ​​Gear II; 30. Rack II; 31. Push plate; 32. Rectangular hole; 33. Push rod; 34. Limiting block; 35. Relief hole; 36. Sealing side plate; 37. Piston plate I; 38. Compression spring I; 39. Piston plate II; 40. Compression spring II; 41. Main sealing plate; 42. Compression spring III; 43. T-shaped block; 44. Return spring; 45. Limiting plate; 46. Relief groove. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] In one embodiment: Refer to Figure 1-10 The detection device disclosed in this embodiment includes an auxiliary rectangular box 10, a main rectangular box 19, a protective top shell 7, an equipment outer shell 1, an equipment lower shell 9, and supporting functional components. These components work together to achieve gas detection and adaptive pressure adjustment. Specifically, the main rectangular box 19 is fixedly installed on one side of the auxiliary rectangular box 10. Two symmetrically arranged rectangular holes 31 are provided on the inner wall of one side of the main rectangular box 19. The auxiliary rectangular box 10 and the main rectangular box 19 are internally connected through the rectangular holes 31, providing a channel for gas flow and pressure regulation. The auxiliary rectangular box 10 has two sets of sealing components inside, used for selectively sealing the rectangular holes 31. Based on this, the opening and closing state of the rectangular holes 31 can be controlled according to the pressure changes inside the main rectangular box 19, achieving switching between pressure relief and sealing.

[0025] The sealing assembly includes two main sealing plates 40 slidably connected to one side of the main rectangular box 19. The ends of the two main sealing plates 40 that are close to each other are arc-shaped. Sealing side plates 35 are fixedly installed on both sides of the main sealing plates 40. Two compression springs III 41 are symmetrically arranged between one side of the main sealing plate 40 and one side inner wall of the auxiliary rectangular box 10. Both ends of the compression springs III 41 abut against one end of the main sealing plate 40 and one side inner wall of the auxiliary rectangular box 10 through spring seats. The elastic force of the compression springs III 41 can drive the main sealing plates 40 to automatically reset, ensuring the sealing effect of the rectangular hole 31 in the non-pressure relief state. Two symmetrically arranged limiting blocks 33 are fixedly installed on the bottom inner wall of the main rectangular box 19 to limit the piston plate II 38 and prevent excessive movement of the piston plate II 38 from causing damage to the components. Piston plate II 38 is slidably connected inside the main rectangular box 19. Two symmetrically arranged push rods 32 are fixedly installed on one side of it. The push rods 32 cooperate with the main sealing plate 40. When piston plate II 38 moves to the limit position, the push rods 32 can be inserted into the rectangular hole 31 and push the two main sealing plates 40 away from each other, so that the rectangular hole 31 is in the open state, realizing gas leakage and pressure relief. The arc-shaped end face of the main sealing plate 40 can reduce gas resistance, ensuring that the pressure relief process is smooth and does not affect the normal detection airflow.

[0026] The main rectangular box 19 and the auxiliary rectangular box 10 are fixedly mounted on the top of the same protective top shell 7. A drive assembly is installed inside the protective top shell 7 to drive the movement of two piston plates II 38 and I 36. Piston plate I 36 is slidably connected to the inner wall of the auxiliary rectangular box 10. Further, the drive assembly includes a rotating shaft 26 rotatably connected to the inner wall of the top of the protective top shell 7. A gear II 28 is rotatably sleeved on the outer wall of the rotating shaft 26. A gear I 14 is rotatably connected to the outer wall of the rotating shaft 26 via a one-way bearing. The one-way bearing enables unidirectional transmission of the rotating shaft 26, preventing piston plate I 36 from moving when piston plate II 38 resets. The top of the main rectangular box 19 is slidably connected to a sliding plate I 16 via a slider and a slide rail. The top of the auxiliary rectangular box 10 is slidably connected to a sliding plate II 25 via a slider and a slide rail. A rack II 29 is fixedly connected to one side of the sliding plate II 25, and the rack II 29 meshes with a gear II 28. A rack I 27 is fixedly installed to one side of the sliding plate I 16, and the rack I 27 meshes with a gear I 14. Multiple protruding plates 24 are fixedly connected to one side of the rack II 29. Through the meshing transmission of the rack and gear, the linear motion of the sliding plate can be converted into the rotational motion of the rotating shaft 26, thereby realizing the linkage between the piston plate I 36 and the piston plate II 38.

[0027] Furthermore, a push plate 30 is fixedly installed on the top of one of the main sealing plates 40, and a clearance hole 34 is opened on the top of the auxiliary rectangular box 10. The top of the push plate 30 slides through the clearance hole 34 and extends into the interior of the protective top shell 7. A clearance groove 45 is opened on one side of the push plate 30. A T-shaped block 42 slides through the interior of the push plate 30. One end of the T-shaped block 42 extends to the upper side of the clearance groove 45. A limiting plate 44 is fixedly installed on one end of the T-shaped block 42. The same return spring 43 is provided between one side of the limiting plate 44 and one side of the inner wall of the clearance groove 45. The return spring 43 is used to block the protrusion plate 24. One side of the protruding plate 24 is arc-shaped. When the rack II 29 moves, the arc-shaped surface of the protruding plate 24 pushes the limiting plate 44 to move laterally. The limiting plate 44 squeezes the return spring 43 and drives the T-block 42 to move. When one protruding plate 24 is disengaged from the limiting plate 44, the limiting plate 44 is reset under the action of the return spring 43, blocking the next protruding plate 24 again, realizing the step-by-step movement of the rack II 29. When the main sealing plate 40 moves upward, the pushing plate 30 drives the limiting plate 44 to move upward. The limiting plate 44 no longer blocks the protruding plate 24, and the protruding plate 24 can move from inside the limiting plate 44. With the pressure of the compression spring I 37, the piston plate I 36 is reset.

[0028] Two symmetrically arranged sliding baffles 18 are fixedly installed on one side of piston plate II 38. One end of each sliding baffle 18 slides through one side of the main rectangular box 19 and is fixedly installed with the same rectangular side plate II 23. Multiple compression springs II 39 are arranged between one side of piston plate II 38 and the inner wall of one side of the main rectangular box 19. Both ends of the compression springs II 39 abut against one side of piston plate II 38 and the inner wall of one side of the main rectangular box 19 through spring seats. Two symmetrically arranged guide rods 21 are fixedly installed on one side of piston plate I 36. One end of each guide rod 21 slides through one side of the auxiliary rectangular box 10 and is fixedly installed with the same rectangular side plate I 22. Multiple compression springs I 37 are arranged between one side of piston plate I 36 and the inner wall of one side of the auxiliary rectangular box 10. Both ends of the compression springs I 37 abut against one side of piston plate I 36 and the inner wall of one side of the auxiliary rectangular box 10 through spring seats. A connecting side plate 17 is fixedly installed on one side of the top of both rectangular side plate I 22 and rectangular side plate II 23. A connecting round rod 15 is fixedly installed on one side of the connecting side plate 17. One end of the two connecting round rods 15 is fixedly connected to one side of sliding plate I 16 and sliding plate II 25, respectively. Based on this, the movement of the piston plate can drive the sliding plate to move synchronously through the connecting parts, thereby triggering the transmission action of the drive assembly.

[0029] Both sides of the main rectangular box 19 have round holes 20. An inlet pipe 4 and a connecting pipe 8 are fixedly connected to both sides of the main rectangular box 19, respectively. A connecting gas supply pipe 13 is fixedly installed on one side of the auxiliary rectangular box 10. The gas supply pipe 13 is connected to a harmful gas source via a pipeline to supplement gas and achieve pressure compensation. The upper shell 1 is detachably connected to the top of the lower shell 9 by screws. Specifically, the screws are evenly distributed along the edges of the upper shell 1 and the lower shell 9 for easy disassembly and maintenance. A multi-functional gas detector 12 is fixedly installed inside the lower shell 9. The connecting pipe 8 is connected to one side of the upper shell 1, and the other side of the upper shell 1 is fixedly connected to a connecting outlet pipe 2. The gas to be detected enters the main rectangular box 19 through the inlet pipe 4, then enters the interior of the upper shell 1 through the connecting pipe 8, and is discharged from the outlet pipe 2 after being detected by the multi-functional gas detector 12.

[0030] In use, the gas to be tested is sent into the main rectangular box 19 through the inlet pipe 4, then into the connecting pipe 8 and finally into the equipment shell 1. After being detected by the multi-functional gas detector 12, it is discharged through the outlet pipe 2. During the testing process, when the gas pressure inside the main rectangular box 19 increases, it pushes the piston plate II 38 to move laterally. The piston plate II 38 compresses the spring II 39 and drives the sliding baffle 18 to move. The sliding baffle 18 drives the sliding plate I 16 to move laterally through the rectangular side plate II 23, the connecting side plate 17, and the connecting rod 15. The sliding plate I 16 drives the rack I 27 to move. The rack I 27 drives the gear I 14 to rotate. The gear I 14 drives the rotating shaft 26 and the gear II 28 to rotate. The gear II 28 drives the rack II 29 and the sliding plate II 25 to move laterally. The sliding plate II 25 drives the rectangular side plate I 22, the guide rod 21, and the piston plate I 36 to move through the connecting component. The piston plate I 36 compresses the spring I 37 and draws gas into the auxiliary rectangular box 10 through the gas supply pipe 13 for storage and backup, thus achieving pressure buffering.

[0031] When the pressure decreases, the spring force of compression spring II 39 pushes piston plate II 38 to reset. Piston plate II 38 drives push rod 32 to move. At the same time, due to the one-way bearing, the rectangular side plate II 23 will not drive piston plate I 36 to move when it resets. During the movement of piston plate II 38, it pushes the gas in the main rectangular box 19, improving the airflow stability. Limiting block 33 limits piston plate II 38. If the pressure still cannot be adjusted, push rod 32 inserts into rectangular hole 31 and pushes main sealing plate 40 to separate. Main sealing plate 40 squeezes compression spring III 41, and gas is released through rectangular hole 31 to relieve pressure. On this basis, when main sealing plate 40 moves upward, it drives push plate 30 and limiting plate 44 to move upward. Protruding plate 24 disengages from limiting plate 44, and the pressure of compression spring I 37 pushes piston plate I 36 to reset. Gas in auxiliary rectangular box 10 is discharged through rectangular hole 31 to achieve pressure compensation. After the gas pressure rises, piston plate II 38 moves again, and rectangular hole 31 closes. This process repeats to complete the pressure adaptive adjustment, ensuring stable operation of the detection work.

[0032] This application can be used in the field of industrial gas detection, or in other fields applicable to this application.

[0033] In another embodiment: Reference Figure 1-10 This invention relates to an online detection device and method for multi-parameter hazardous gases in industrial areas, which is applied in the field of industrial gas detection. The structure of this embodiment is basically the same as that of the aforementioned embodiments, except that: preferably, the multi-functional gas detector 12 uses a stainless steel shell to improve corrosion resistance and structural strength; compression springs I 37, II 39, and III 41 are all made of high-strength alloy steel to ensure elastic stability and service life. Supports 3 are fixedly installed at the bottom of both the auxiliary rectangular box 10 and the main rectangular box 19 to stably fix the equipment in a designated location in the industrial area; a protective cover II 6 is fixedly installed on one side of the auxiliary rectangular box 10, and a protective cover I 5 is fixedly installed on one side of the main rectangular box 19. Multiple heat dissipation holes 11 are provided on the sides of both the protective covers I 5 and II 6, which can prevent external dust and debris from entering the internal components and can also dissipate the heat generated during operation in a timely manner, avoiding high-temperature aging of the components.

[0034] During the operation of this device, the sliding mating surfaces, gear and rack meshing surfaces, and sealing components need to be maintained regularly. Every 3 months, the dust inside the dustproof structure should be cleaned and wear-resistant grease should be added. Every 6 months, the elasticity of the springs and the aging of the seals should be checked, and any failed parts should be replaced in a timely manner to ensure the pressure regulation accuracy and sealing performance of the equipment.

[0035] However, as is well known to those skilled in the art, the working principle and wiring method of the multi-functional gas detector 12 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online multi-parameter detection device for harmful gases in industrial areas, characterized in that, include: A secondary rectangular box (10) is fixed to a primary rectangular box (19) on one side. Two symmetrical rectangular holes (31) are opened on the inner wall of one side of the primary rectangular box (19). The secondary rectangular box (10) and the primary rectangular box (19) are connected through the rectangular holes (31). Two sets of sealing components are provided inside the secondary rectangular box (10). Piston plate II (38) is slidably assembled inside the main rectangular box (19), and piston plate I (36) is slidably assembled inside the inner wall of the auxiliary rectangular box (10). The tops of the main rectangular box (19) and the auxiliary rectangular box (10) are fixedly connected to the same protective top shell (7), and a drive assembly is provided inside the protective top shell (7). The main rectangular box (19) has round holes (20) on both sides, and the air inlet pipe (4) and the connecting pipe (8) are fixed and connected to each other on both sides respectively. The upper shell (1) and the lower shell (9) are connected to the top of the lower shell (9) by screws. The lower shell (9) is equipped with a multi-functional gas detector (12). The connecting pipe (8) is connected to one side of the upper shell (1). The other side of the upper shell (1) is connected to the outlet pipe (2). The gas to be tested enters the main rectangular box (19) through the inlet pipe (4) and then enters the upper shell (1) through the connecting pipe (8). After being detected by the multi-functional gas detector (12), it is discharged through the outlet pipe (2). The driving component links the piston plate I (36) and piston plate II (38) to adjust the gas pressure. The sealing component adapts to the opening and closing of the rectangular hole (31) to realize the switching between pressure relief and sealing.

2. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 1, characterized in that, The sealing assembly includes two main sealing plates (40) slidably mounted on one side of the main rectangular box (19). The two main sealing plates (40) are arc-shaped and close to each other at one end. Both sides of the main sealing plates (40) are fixedly connected to sealing side plates (35). Two symmetrical compression springs III (41) are provided between the main sealing plates (40) and the inner wall of one side of the auxiliary rectangular box (10). Both ends of the compression springs III (41) abut against the inner walls of the main sealing plates (40) and the auxiliary rectangular box (10) through spring seats. Two symmetrical push rods (32) are fixedly connected to one side of the piston plate II (38). The push rods (32) are used in conjunction with the main sealing plates (40). Two symmetrical limiting blocks (33) are fixedly connected to the inner wall of the bottom of the main rectangular box (19). The limiting blocks (33) limit the piston plate II (38).

3. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 1, characterized in that, The drive assembly includes a rotating shaft (26) rotatably mounted on the inner wall of the top of the protective top shell (7), a gear II (28) rotatably mounted on the outer wall of the rotating shaft (26), a gear I (14) rotatably connected to the outer wall of the rotating shaft (26) through a one-way bearing, a sliding plate I (16) slidably mounted on the top of the main rectangular box (19), a sliding plate II (25) slidably mounted on the top of the auxiliary rectangular box (10), a rack II (29) fixedly connected to one side of the sliding plate II (25), the rack II (29) meshing with the gear II (28), a rack I (27) fixedly mounted on one side of the sliding plate I (16), the rack I (27) meshing with the gear I (14), and multiple protrusions (24) fixedly connected to one side of the rack II (29). The one-way bearing enables one-way transmission of the rotating shaft (26), preventing the piston plate I (36) from moving when the piston plate II (38) is reset. The rack and gear work together to convert the linear motion of the sliding plate into the rotational motion of the rotating shaft (26), thus realizing the linkage of the two piston plates.

4. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 1, characterized in that, Two symmetrical sliding baffles (18) are fixedly connected to one side of the piston plate II (38). One end of the two sliding baffles (18) slides through one side of the main rectangular box (19) and is fixedly connected to the same rectangular side plate II (23). Multiple compression springs II (39) are provided between the piston plate II (38) and the inner wall of one side of the main rectangular box (19). The two ends of the compression springs II (39) abut against the piston plate II (38) and the inner wall of the main rectangular box (19) through spring seats. Two symmetrical guide rods (21) are fixed to one side of the piston plate I (36). One end of the two guide rods (21) slides through one side of the auxiliary rectangular box (10) and is fixed to the same rectangular side plate I (22). Multiple compression springs I (37) are provided between the piston plate I (36) and the inner wall of one side of the auxiliary rectangular box (10). The two ends of the compression springs I (37) abut against the piston plate I (36) and the inner wall of the auxiliary rectangular box (10) through spring seats. A connecting side plate (17) is fixedly installed on one side of the top of both rectangular side plate I (22) and rectangular side plate II (23). A connecting round rod (15) is fixedly installed on one side of the connecting side plate (17). One end of the two connecting round rods (15) is fixedly connected to sliding plate I (16) and sliding plate II (25) respectively. The compression spring I (37) and compression spring II (39) can drive the corresponding piston plate to reset, and the connecting component moves the piston plate to the sliding plate to trigger the drive component to act.

5. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 2, characterized in that, One of the main sealing plates (40) has a push plate (30) fixedly mounted on its top. The auxiliary rectangular box (10) has a clearance hole (34) on its top. The top of the push plate (30) slides through the clearance hole (34) and extends into the protective top shell (7). A clearance groove (45) is provided on one side of the push plate (30). A T-shaped block (42) slides through the push plate (30). One end of the T-shaped block (42) extends to the side above the clearance groove (45) and is fixedly mounted with a limiting plate (44). The same return spring (43) is provided between the limiting plate (44) and the inner wall of one side of the clearance groove (45). The convex plate (24) has an arc shape on one side. The convex plate (24) pushes the limiting plate (44) to move and resets it through the reset spring (43) to realize the step movement of rack II (29). The main sealing plate (40) moves upward to drive the limiting plate (44) to disengage from the convex plate (24), which facilitates the reset of piston plate I (36).

6. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 1, characterized in that, The auxiliary rectangular box (10) and the main rectangular box (19) are both fixedly mounted with brackets (3) at the bottom. The auxiliary rectangular box (10) is fixedly connected to and connected to the gas supply pipe (13) on one side. The brackets (3) realize the stable fixation of the equipment. The gas supply pipe (13) can draw gas into the auxiliary rectangular box (10) for storage, providing backup gas for pressure compensation.

7. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 1, characterized in that, The auxiliary rectangular box (10) is fixedly fitted with a protective cover II (6) on one side, and the main rectangular box (19) is fixedly fitted with a protective cover I (5) on one side. Both the protective cover I (5) and the protective cover II (6) have multiple heat dissipation holes (11) on their sides. The protective cover prevents external dust from entering, and the heat dissipation holes (11) dissipate internal heat in time to avoid high-temperature aging of components.

8. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 4, characterized in that, The multifunctional gas detector (12) has a stainless steel shell, and the compression springs I (37), II (39) and III (41) are all made of high-strength alloy steel.

9. The online multi-parameter detection device for hazardous gases in industrial areas according to claim 3, characterized in that, The convex plates (24) are evenly arranged along the length of rack II (29). The evenly arranged convex plates (24) ensure the stepping accuracy of rack II (29), and the minimal fit gap ensures the smooth movement of T-block (42).

10. The detection method of the online multi-parameter detection device for hazardous gases in industrial areas according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. The gas to be tested is sent into the main rectangular box (19) through the inlet pipe (4), and then flows into the equipment shell (1) through the connecting pipe (8). After the parameters are detected by the multi-functional gas detector (12), it is discharged through the outlet pipe (2). S2. During the detection process, when the air pressure inside the main rectangular box (19) increases, it pushes the piston plate II (38) to move and squeezes the compression spring II (39). Through the linkage of the drive assembly, the piston plate I (36) squeezes the compression spring I (37), and some gas is drawn into the auxiliary rectangular box (10) through the gas delivery pipe (13) for storage. S3. When the air pressure decreases, the compression spring II (39) drives the piston plate II (38) to reset. The piston plate I (36) is prevented from moving by means of the one-way bearing. During the movement of the piston plate II (38), the gas in the main rectangular box (19) is pushed to stabilize the airflow. S4. When the air pressure exceeds the adjustment range, the piston plate II (38) drives the push rod (32) to insert into the rectangular hole (31), pushes the main sealing plate (40) to separate and squeeze the compression spring III (41), and the gas is released through the rectangular hole (31) to relieve pressure. S5. The main sealing plate (40) moves upward, causing the limiting plate (44) to disengage from the convex plate (24). The compression spring I (37) drives the piston plate I (36) to reset, and sends the spare gas in the auxiliary rectangular box (10) back to the main rectangular box (19) through the rectangular hole (31) to compensate for the gas pressure. After the gas pressure rises, the piston plate II (38) resets, and the main sealing plate (40) closes the rectangular hole (31). The reciprocating cycle realizes continuous detection.

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