Airtight space gas component monitoring device

Abstract

The invention relates to the technical field of closed space gas collection, and discloses a closed space gas component monitoring device which comprises a gas detector; the first protective shell is movably arranged on one side of the gas detector in a covering manner; the second protective shell is movably arranged on the other side of the gas detector in a covering manner; the first transmission arm and the second transmission arm are each provided with a first arm and a second arm which are arranged in an included angle mode, the included angle position of the first arm and the second arm is rotationally connected to the fixing frame, and power of the two driving pieces is converted into single arc-shaped swing of the first transmission arm and the second arm of the second transmission arm. The arc-shaped swing of the second arm directly pushes the first protection shell and the second protection shell to move in the opposite direction or the reverse direction along the preset track, the transmission structure is simplified, and the risks of shaking, dislocation and abrasion caused by component gaps due to the complex transmission structure are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of closed space gas collection, in particular to a closed space gas component monitoring device. BACKGROUND

[0002] In a closed space working environment, such as a mine, a chemical container, a storage tank, a ship cabin and the like, the safety monitoring of gas components is crucial to the safety of workers and production. Common harmful gases in a closed space include hydrogen sulfide, carbon monoxide, methane and the like. If these gases are not detected and treated in time, serious safety accidents such as poisoning, suffocation and explosion can easily occur. Therefore, a gas component monitoring device is needed to monitor the working gas components in the sealed space. With the development of wireless sensing technology, wireless gas detection systems have been widely used in closed space monitoring. For example, patent document No. 202120009643.8 discloses a wireless gas detector, which includes a detector body and a dustproof assembly. The lower end of the detector body is provided with a sensor probe, and the sensor probe is detachably connected to the detector body through threads. After the various signals detected by the sensor probe are processed by the control assembly, they are transmitted externally through the wireless transmission module, realizing remote gas monitoring. However, when the above structure is applied in a closed space, due to the humid, dusty or corrosive gas environment in the closed space, the detector lacks effective protection devices and cannot effectively protect the detector body, making it vulnerable to environmental factors and prone to damage, thus reducing the service life of the equipment and affecting the accuracy and reliability of the monitoring data. To solve the above problems, patent document No. 202221645630.0 discloses a pollution source flue gas particulate matter detection device. The protection assembly includes a protection shell, a rotating rod, a rotating block, an extension rod, a connecting block, a cover and a rebound spring. In use, the extension rod is extended by manually pulling the cover, and the two covers move to the left and right sides, respectively. Then, through the rotation of the cover on the rotating block and the rotating rod, the two covers perform circular motion above the protection shell. After the cover is lowered, the extension rod is retracted by the rebound spring, and the two covers are firmly attached above the protection shell. The two covers, the protection shell and the base form a closed space together, and the detector is placed in it to avoid long-term contact with external polluted gas. However, since the cover needs to perform a complex combined motion of horizontal movement and flipping, high coordination precision is required between multiple moving parts. Once a gap is generated due to wear of a part, the cover will shake or misalign during movement, causing increased wear and preventing the cover from accurately returning to the sealed position. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing pollution source flue gas particulate matter detection device cover needs to be moved horizontally and then turned over, which is a complex composite motion, and needs high cooperation precision between multiple moving parts, which easily leads to the cover failing to be accurately reset to the sealing position.

[0004] To solve the above technical problem, the present application provides a closed space gas component monitoring device, comprising: a fixed frame; a gas detector installed on the upper side of the fixed frame; a first protective shell, a moving cover is arranged on one side of the gas detector; a second protective shell, a moving cover is arranged on the other side of the gas detector; a first transmission arm; a second transmission arm; The first transmission arm and the second transmission arm each have a first arm and a second arm arranged at an angle, the first arm and the second arm are rotationally connected at the angle to the fixed frame, the second arm of the first transmission arm is connected to the first protective shell, and the second arm of the second transmission arm is connected to the second protective shell; a first driving member connected to the first arm of the first transmission arm, for driving the first arm and the second arm of the first transmission arm to rotate around the fixed frame, to drive the first protective shell to move horizontally; a second driving member connected to the first arm of the second transmission arm, for driving the first arm and the second arm of the second transmission arm to rotate around the fixed frame, to drive the second protective shell to move horizontally.

[0005] Preferably, the top of the fixed frame is provided with horizontally extending guide rails on both sides, and each guide rail is provided with a sliding frame at the top; The first protective shell and the second protective shell are respectively fixedly connected to a sliding frame; The second arm of the first transmission arm and the second arm of the second transmission arm are respectively connected to a sliding frame.

[0006] Preferably, the second arm is provided with a mounting long groove extending along the length direction of the second arm, the guide rail is provided with a first support rod, the bottom end of each sliding frame is provided with a connecting arc groove, the connecting arc groove is provided with a second support rod, the second end of the second arm is located in the connecting arc groove, and the first support rod and the second support rod are located in the mounting long groove.

[0007] Preferably, the guide rail includes a first rail and a second rail arranged in parallel and spaced apart, a positioning groove is arranged between the first rail and the second rail, and the first support rod is arranged in the positioning groove.

[0008] Preferably, the lower part of the fixed frame is symmetrically provided with two mounting frames; The first driving member and the second driving member are electric telescopic rods, the first end of each electric telescopic rod is rotatably installed on the mounting frame, and the second end of each electric telescopic rod is rotatably connected with the first arm.

[0009] Preferably, further comprising: The probe is used for detecting a gas component, a signal transmitter is arranged in the probe, the signal transmitter is signal-connected with the gas detector, a lead screw is arranged in the fixing frame, a sliding block is arranged on the lead screw, a connecting rod is fixed on the sliding block, an installation disc is arranged at the bottom of the connecting rod, and the probe is arranged on the installation disc. A controller is arranged on the fixing frame, a signal transceiver is arranged on the controller, and the controller is electrically connected with the gas detector and the driving device. A collecting box is arranged on the top of the fixing frame, and the gas detector and the controller are arranged in the collecting box.

[0010] Preferably, a connecting box is further arranged between the top of the fixing frame and the collecting box, a motor is arranged in the connecting box, the top of the lead screw is connected with the output shaft of the motor through the connecting box, and the motor is electrically connected with the controller.

[0011] Preferably, a battery and a camera are further arranged in the collecting box, a monitoring port is arranged on the side wall of the collecting box, and the shooting end of the camera is arranged in the monitoring port. The controller and the camera are electrically connected with the battery.

[0012] Preferably, a temperature sensor and a humidity sensor are further arranged on the side wall of the collecting box, and the temperature sensor and the humidity sensor are electrically connected with the controller. An audible and visual alarm is further arranged on the collecting box, and the audible and visual alarm is electrically connected with the controller.

[0013] Preferably, the device further comprises a base, a support frame and an air purification box. The support frame is fixed on the base, the support frame is further arranged on the base, the air purification box is arranged on the support frame, an electromagnetic valve is arranged in the air inlet pipe of the air purifier, and the electromagnetic valve is electrically connected with the controller.

[0014] Compared with the prior art, the closed space gas component monitoring device has the beneficial effects that: the first driving member drives the first transmission arm to rotate, the second driving member drives the second transmission arm to rotate, the power of the two driving members is converted into single arc swing of the second arm of the first transmission arm and the second transmission arm, the first protective shell and the second protective shell are directly pushed to move horizontally along the predetermined track and move towards each other or in the opposite direction by the arc swing of the second arm, the first protective shell and the second protective shell move in the opposite direction and are spaced apart from each other in the normal monitoring state, the equipment is ensured to work normally, the first protective shell and the second protective shell are attached to each other and cover the gas detector in the harsh environment with high concentration of harmful components in the closed space or during the non-detection period, the transmission structure is simplified, the shaking, misplacement and wear risk caused by the gap between components due to the complex transmission structure are reduced, the accuracy and repeatability of each closing action of the protective shell are ensured, the protective shell can be reliably reset to the sealed position, the maintenance frequency is reduced, and the service life of the equipment is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A perspective structural schematic view of the first protective shell and the second protective shell of the closed space gas component monitoring device provided by the embodiment of the present application when the first protective shell and the second protective shell are spaced apart and fully opened is provided. Figure 2 A perspective structural schematic view of the closed space gas component monitoring device provided by the embodiment of the present application when the first protective shell and the second protective shell are attached to each other is provided. Figure 3 A perspective structural schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 4 A perspective structural schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 3 A partial enlarged structural schematic view of position A in the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 5 A perspective structural schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 3 A partial enlarged structural schematic view of position B in the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 6 A first transmission arm (the same as the second transmission arm) and a guide rail structure schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 7 A lead screw, a connection box and a collection box position distribution schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 8 A lead screw structure schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 9 A collection box and a connection box internal structure schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 10 A first protective shell structure (the same as the second protective shell) schematic view of the closed space gas component monitoring device provided by the embodiment of the present application is provided. Figure 11 The structural diagram of the air purification box of the closed space gas component monitoring device provided by the embodiment of the present application is shown in the figure. Figure 12 The internal structure schematic diagram of the air purification box of the closed space gas component monitoring device provided by the embodiment of the present application is shown in the figure.

[0016] In the figure, 1, collection box; 201, first protective shell; 202, second protective shell; 3, monitoring port; 4, slot; 5, temperature sensor; 6, humidity sensor; 7, connection box; 8, fixing frame; 9, support frame; 10, base; 11, fixing bolt; 12, connecting rod; 13, mounting disc; 14, gas detector; 15, motor; 16, controller; 17, signal transceiver; 18, partition; 19, camera; 20, battery; 21, electric telescopic rod; 22, screw rod; 23, sliding block; 24, moisture-proof pad; 25, positioning port; 26, audible and visual alarm; 27, air purification box; 28, air extractor; 29, purification assembly; 30, air inlet pipe; 31, air outlet; 32, maintenance door; 33, mounting bracket; 3401, first transmission arm; 3402, second transmission arm; 341, first arm; 342, second arm; 3421, mounting long groove; 35, guide rail; 351, first rail; 352, second rail; 353, positioning groove; 354, first support rod; 36, sliding bracket; 37, connecting arc groove; 371, second support rod. DETAILED DESCRIPTION

[0017] The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0018] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0019] It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information without departing from the scope of the present application.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] like Figures 1 to 12 As shown, a preferred embodiment of the present invention provides a gas composition monitoring device for a confined space, comprising: This invention provides a device for monitoring the gas composition in a confined space, comprising: Mounting bracket 8; Gas detector 14 is installed on the upper side of the mounting bracket 8; The first protective shell 201 is movable and installed on one side of the gas detector 14; The second protective shell 202 is movable and located on the other side of the gas detector 14; First transmission arm 3401; Second drive arm 3402; The first transmission arm 3401 and the second transmission arm 3402 each have a first arm 341 and a second arm 342 arranged at an angle. The angle between the first arm 341 and the second arm 342 is rotatably connected to the fixed frame 8. The second arm 342 of the first transmission arm 3401 is connected to the first protective shell 201, and the second arm 342 of the second transmission arm 3402 is connected to the second protective shell 202. The first driving member is connected to the first arm 341 of the first transmission arm 3401 and is used to drive the first arm 341 and the second arm 342 of the first transmission arm 3401 to rotate around the fixed frame 8, so as to drive the first protective shell 201 to move horizontally. The second driving member is connected to the first arm 341 of the second transmission arm 3402 and is used to drive the first arm 341 and the second arm 342 of the second transmission arm 3402 to rotate around the fixed frame 8, so as to drive the second protective shell 202 to move horizontally.

[0022] The first driving member drives the first transmission arm 3401 to rotate, and the second driving member drives the second transmission arm 3402 to rotate, and the power of the two driving members is converted into single arc swinging of the second arm 342 of the first transmission arm 3401 and the second transmission arm 3402, and the arc swinging of the second arm 342 directly pushes the first protective shell 201 and the second protective shell 202 to move horizontally along a predetermined track and move towards each other or in the opposite direction. In the normal monitoring state, the first protective shell 201 and the second protective shell 202 move in opposite directions and are spaced apart from each other, which ensures the normal operation of the equipment. When the harmful component concentration in the sealed space is high in the harsh environment or during the non-detection period, the first protective shell 201 and the second protective shell 202 are attached to each other and cover the gas detector 14, which simplifies the transmission structure, reduces the risk of shaking, misplacement and wear caused by the gap between components caused by the complex transmission structure, ensures the accuracy and repeatability of each closing action of the protective shell, and makes it can be reliably reset to the sealing position, reduces the maintenance frequency, and prolongs the service life of the equipment.

[0023] Specifically, the top of the fixed frame 8 is provided with horizontally extending guide rails 35 on both sides, and each guide rail 35 is slidably provided with a sliding frame 36 at the top; The first protective shell 201 and the second protective shell 202 are respectively fixedly connected with a sliding frame 36; The second arm 342 of the first transmission arm 3401 and the second arm 342 of the second transmission arm 3402 are respectively connected with a sliding frame 36.

[0024] By arranging the horizontally extending guide rails 35, the movement track of the first protective shell 201 and the second protective shell 202 is effectively constrained to prevent vertical deviation or shaking during the closing process, so that the first protective shell 201 and the second protective shell 202 can smoothly and accurately complete the opening and closing action, and the working reliability and service life of the equipment in complex sealed space environments such as mines and chemical containers are improved.

[0025] Specifically, the second arm 342 is provided with a mounting long groove 3421 extending along the length direction of the second arm 342, the guide rail 35 is provided with a first supporting rod 354, the bottom end of each sliding frame 36 is provided with a connecting arc groove 37, the connecting arc groove 37 is provided with a second supporting rod 371, and the second end of the second arm 342 is located in the connecting arc groove 37, and the first supporting rod 354 and the second supporting rod 371 are located in the mounting long groove 3421.

[0026] As Figure 1 and Figure 2As shown, when the first protective shell 201 and the second protective shell 202 are spaced apart and in a fully open state, the second support rod 371 is located at the top of the mounting long groove 3421 on the second arm 342, and at this time the first support rod 354 is located at the bottom of the mounting long groove 3421, serving as a fixed fulcrum for the rotation of the transmission arm, when it is necessary to drive the first protective shell 201 and the second protective shell 202 to abut each other to cover the gas detector 14, taking the first transmission arm 3401 as an example, the first driving member pushes the bottom end of the first arm 341 to move outward, and since the first support rod 354 is fixed in the guide rail 35 to form a stable rotating fulcrum, the entire first transmission arm 3401 begins to rotate around the first support rod 354, and with the rotation of the first transmission arm 3401, the second arm 342 moves in an arc, and the outer wall of the second arm 342 exerts a horizontal pushing force on the connecting arc groove 37, thereby pushing the sliding frame 36 and the protective shell fixed thereto to move horizontally along the guide rail 35, in this process, since the second support rod 371 is limited in the connecting arc groove 37, and the connecting arc groove 37 pushes the protective shell to move horizontally, causing the second support rod 371 to slide in the mounting long groove 3421 from the top to the bottom, while the end of the second arm 342 gradually extends outward from the connecting arc groove 37, converting into smooth horizontal linear motion of the first protective shell 201, and the movement process of the second transmission arm 3402 is the same as that of the first transmission arm 3401, thereby ensuring that the first protective shell 201 and the second protective shell 202 can be horizontally closed and closely abutted, forming an effective seal.

[0027] Specifically, the lower part of the fixed frame 8 is symmetrically provided with two mounting frames 33. The first driving member and the second driving member are both electric telescopic rods 21, the first end of each electric telescopic rod 21 is rotatably mounted on the mounting frame 33, and the second end of each electric telescopic rod 21 is rotatably connected with the first arm 341.

[0028] Compared with installing the electric telescopic rod 21 parallel to the movement direction of the protective shell, which occupies a large horizontal space, the present design allows the electric telescopic rod 21 to be vertically installed on the mounting frame 33 at the bottom of the fixed frame 8, which significantly reduces the center of gravity of the device, improves the stability on uneven surfaces, and releases the space at the top and sides, making the overall structure more compact, especially in confined environments such as mines and storage tanks, which improves the safety of the device; and the transmission arm acts as a lever to reduce the stroke of the telescopic rod required to open and close the protective shell, improving efficiency.

[0029] Specifically, the guide rail 35 includes a first rail 351 and a second rail 352 arranged in parallel and spaced apart, a positioning groove 353 is arranged between the first rail 351 and the second rail 352, and the first support rod 354 is arranged in the positioning groove 353.

[0030] Compared with the single-track guiding design, the double-track clamping structure not only greatly reduces the lateral stress between the moving parts, reduces the guiding wear, but also maintains reliable movement performance in harsh environments such as vibration and dust accumulation in a closed space, so that the first protective shell 201 and the second protective shell 202 can be precisely closed and tightly fitted to form an effective seal.

[0031] Specifically, the first track 351 and the second track 352 are both T-shaped tracks, and the bottom end of the sliding frame 36 is provided with a T-shaped sliding groove, the T-shaped sliding groove and the T-shaped track are matched and connected, and the cooperation of the T-shaped track and the T-shaped sliding groove realizes double limiting in the up-down and left-right directions, effectively prevents the sliding frame 36 from jumping vertically or deviating horizontally during movement, and ensures that the first protective shell 201 and the second protective shell 202 can smoothly slide along the predetermined track.

[0032] Specifically, it also includes: The probe is used for detecting the gas composition, the probe is provided with a signal transmitter inside, the signal transmitter is signal connected with the gas detector 14, the fixed frame 8 is provided with a lead screw 22, the lead screw 22 is provided with a sliding block 23, the sliding block 23 is fixed with a connecting rod 12, the bottom of the connecting rod 12 is provided with a mounting disc 13, and the probe is arranged on the mounting disc 13; The controller 16 is provided with a signal transceiver 17, and the controller 16 is electrically connected with the gas detector 14 and the driving device respectively; The acquisition box 1 is arranged on the top of the fixed frame 8, and the gas detector 14 and the controller 16 are arranged in the acquisition box 1.

[0033] The probe is separated from the gas detector 14 body and connected by wireless signal transmission. The probe continuously monitors the gas composition in the sealed space and transmits data to the gas detector 14 through the signal transmitter. The gas detector 14 processes the relevant data. The gas detector 14 is electrically connected to the controller 16. The controller 16 is electrically connected to the gas detector 14 and the driving device, so that the controller 16 can drive the first protective shell 201 and the second protective shell 202 at both ends of the gas detector 14 to open and close according to the working state or monitoring signal of the gas detector 14. The probe is arranged on the lead screw 22 in the fixed frame 8. On the one hand, during the installation of the sealed space, due to the complex structure of the space and the existence of obstacles such as pipelines and supports, the lead screw 22 structure enables the operator to flexibly adjust the detection probe height, effectively avoiding the existing obstacles in the sealed space, ensuring the installation of the equipment in the limited space, and solving the installation problem of the traditional fixed-height detection equipment that is difficult to adapt to complex sealed environments. On the other hand, in the actual monitoring process, according to the physical properties of different height gas stratification in the sealed space, such as heavy gas such as hydrogen sulfide deposited at the bottom and light gas such as methane gathered at the top, the mechanism can adjust the probe to different heights for multi-point detection according to real-time monitoring requirements under the instruction of the controller 16, fully grasp the vertical distribution of the gas, avoid the limitations of the traditional fixed-height detection equipment, improve the safety warning capability of the sealed space operation and the comprehensiveness of the gas monitoring, and make the equipment adapt to the precise monitoring requirements under various complex working conditions.

[0034] Specifically, the top of the fixed frame 8 and the collection box 1 are further provided with a connecting box 7. The connecting box 7 is provided with a motor 15. The top of the lead screw 22 penetrates through the connecting box 7 and is connected with the output shaft of the motor 15. The motor 15 is electrically connected with the controller 16. The connecting box 7 provides all-round physical protection for the motor 15, effectively isolates the erosion of high humidity, dust and corrosive gas in the sealed space on the motor 15, prolongs the service life of the motor 15, and the operator controls the start and stop of the motor 15 through the controller 16, and then adjusts the height of the probe according to the actual requirements.

[0035] Specifically, the collection box 1 is further provided with a battery 20 and a camera 19. The collection box 1 is provided with a monitoring port 3 on the side wall. The shooting end of the camera 19 is located in the monitoring port 3. The controller 16 and the camera 19 are electrically connected with the battery 20.

[0036] The battery 20 provides a stable and reliable independent power supply for the entire monitoring system. In the case of power failure or inability to access external power in airtight spaces such as mines and storage tanks, the device can still ensure continuous operation. The camera 19 monitors the environment through the monitoring tank. The camera 19 can detect multiple aspects of the working environment, including but not limited to lighting conditions: ensuring that the working environment has sufficient light to avoid excessive darkness or brightness affecting work efficiency and visual health; space layout: detecting whether the layout of the working area is reasonable, whether it conforms to the principles of ergonomics, and whether there are safety hazards; personnel activities: monitoring the behavior of workers to ensure they comply with safety regulations and operating procedures; item placement: detecting whether the placement of items in the working area is neat and orderly to avoid clutter affecting work efficiency; environmental hygiene: the images captured by the camera 19 can indirectly assess the cleanliness of the working environment to ensure compliance with hygiene standards.

[0037] Specifically, the temperature sensor 5 and the humidity sensor 6 are also provided on the side wall of the collection box 1, and the temperature sensor 5 and the humidity sensor 6 are electrically connected with the controller 16; The collection box 1 is also provided with an audible and visual alarm 26, and the audible and visual alarm 26 is electrically connected with the controller 16.

[0038] The temperature sensor 5 and the humidity sensor 6 collect the temperature and humidity of the environment. Through real-time monitoring of the temperature sensor 5 and the humidity sensor 6, the manager can timely understand the changes of the environment and take corresponding measures to adjust, so as to ensure that the environment always remains in a suitable range. Then through the controller 16 collection and processing, the collected data is transmitted remotely through the signal transceiver 17. In the case of special circumstances, a signal can be sent to the signal transceiver 17 remotely, and the signal transceiver 17 sends the signal to the controller 16. The controller 16 controls the electric telescopic rod 21 to retract and close the two protective shells, thereby protecting the collection box 1, reducing the damage of the data collection and detection electronic devices, and prolonging the service life of the collection equipment.

[0039] The gas detector 14 obtains the data of the gas, and when the concentration of the harmful gas inside exceeds the threshold value, a signal is sent to the controller 16 to control the audible and visual alarm 26 to alarm and alert the workers to timely emergency disposal and safety evacuation.

[0040] Specifically, it also includes a base 10, a support frame 9 and an air purification box 27; The support frame 9 is fixed on the base 10, and the base 10 is also provided with the support frame 9. The air purification box 27 is arranged on the support frame 9. An electromagnetic valve is arranged in the air inlet pipe 30 of the air purifier, and the electromagnetic valve is electrically connected with the controller 16.

[0041] The monitoring device integrates the air purification tank 27. When the harmful gas concentration inside the tank exceeds the threshold value, the controller 16 controls the audible and visual alarm 26 to alarm, and the controller 16 controls the electromagnetic valve to open, so that the harmful components in the gas in the closed space are treated in time through the air purification tank 27, thereby providing a valuable time window for the safe evacuation and emergency disposal of the staff.

[0042] Specifically, the air tank is provided with an air extractor 28 and a purification assembly 29. The air extractor 28 is electrically connected with the controller 16. A maintenance door 32 is arranged on the side wall of the air purification tank 27.

[0043] The controller 16 controls the air extractor 28 to extract the gas in the closed space, so as to ensure that the harmful components in the gas are quickly purified by the purification assembly 29. The maintenance door 32 arranged on the side wall makes the replacement and cleaning of the purification assembly 29 extremely convenient, and the maintenance can be completed without disassembling the entire device during the operation in the closed space.

[0044] Specifically, the air purification tank 27 is provided with an air outlet 31 on the side away from the air inlet pipe 30. An observation window is arranged on the maintenance door 32. The observation window is provided with a visual glass, so as to facilitate the staff to observe the running state of the components in the air purification tank 27.

[0045] Specifically, the purification assembly 29 is composed of a porous active layer and a support layer. The porous active layer is composed of ZIF-8 nanoparticles and PVDF. The ZIF-8 porous network and the PVDF adhesive matrix are constructed. The support layer is made of PVDF porous membrane material. The porous active layer can effectively adsorb and filter harmful components such as hydrogen sulfide and carbon monoxide. The PVDF material ensures the structural stability and long service life in high humidity and corrosive environment.

[0046] Specifically, the inner wall of the protective shell is fixedly connected with a moisture-proof pad 24. In the closed state, the moisture-proof pad 24 effectively prevents the invasion of moisture, harmful gas and dust into the collection tank 1.

[0047] Specifically, the bottom of the protective shell is provided with a positioning opening 25, so that the two protective shells can be avoided when they are aligned.

[0048] Specifically, the top wall and the bottom wall of the fixed frame 8 are provided with seat bearings. The top of the fixed frame 8 is provided with a through hole. The bottom end of the lead screw 22 is rotatably connected in the seat bearing on the bottom wall of the fixed frame 8. The top end of the lead screw 22 protrudes into the connecting box 7 through the top wall of the fixed frame 8. The top end of the lead screw 22 is connected with the output shaft of the motor 15. The upper part of the lead screw 22 is rotatably connected with the seat bearing on the top wall of the fixed frame 8. The stable support of the lead screw 22 is realized, the running accuracy and stability of the lifting mechanism are improved, and it is ensured that the mounting disc 13 can be smoothly and accurately adjusted in height along the predetermined track.

[0049] Specifically, the base 10 is provided with a plurality of threaded holes, and a fixing bolt 11 is threadedly connected in each threaded hole, and the base 10 can be installed at a suitable position through the fixing bolt 11.

[0050] Specifically, the top of the support frame 9 is provided with a horizontal mounting rod, the fixing frame 8 is fixed on the horizontal mounting rod, and the fixing frame 8 is arranged in a staggered manner with the air purification box 27; the overall gravity distribution of the equipment is optimized, the stability of the device on the base 10 is improved, and the structural interference between the fixing frame 8 and the air purification box 27 is avoided.

[0051] Specifically, two slots 4 are arranged on the side wall of the collection box 1, one of the slots 4 is provided with a temperature sensor 5, and the other slot is provided with a humidity sensor 6.

[0052] Specifically, the collection box 1 is provided with a partition plate 18, the collection box 1 is divided into an upper region and a lower region by the partition plate 18, the gas detector 14 is arranged in the lower region, and the controller 16, the camera 19 and the battery 20 are arranged in the upper region.

[0053] In other embodiments, the support frame 9 and the fixing frame 8 are fixed on the base 10.

[0054] The working process of the present application is as follows: the device is fixed in a suitable position in the closed space through the fixing bolt 11 on the base 10, during the installation process, the operator can start the motor 15 through the controller 16 according to the existence of pipelines, supports and other obstacles in the closed space, drive the screw rod 22 to rotate, make the sliding block 23 drive the connecting rod 12 and the mounting disc 13 move up and down, and flexibly adjust the height of the probe, at this time, the first protective shell 201 and the second protective shell 202 are spaced from each other, and space is provided for normal operation of the equipment.

[0055] After the equipment is powered on, the battery 20 provides stable power supply for the whole system, the probe starts to detect the gas composition in the closed space in real time, the signal transmitter in the probe wirelessly transmits the detected gas concentration data of hydrogen sulfide, carbon monoxide and methane to the gas detector 14 in the collection box 1; at the same time, the temperature sensor 5 and the humidity sensor 6 continuously collect environmental temperature and humidity data, the camera 19 monitors the environment in the closed space through the monitoring port 3, records information such as lighting condition, space layout and personnel activity state; the controller 16 collects and processes all sensor data in real time, and transmits the monitoring results to the monitoring center through the signal transceiver 17, so that the management personnel can timely grasp the safety condition in the closed space.

[0056] When the gas detector 14 detects that the concentration of harmful gas exceeds the preset safety threshold, a signal is immediately sent to the controller 16, which triggers the audible and visual alarm 26 to issue an audible and visual alarm, warning the on-site staff of the potential safety risk and the need to take protective measures or prepare to evacuate in a timely manner. At the same time, the controller 16 starts the electromagnetic valve in the air purification tank 27, so that the air inlet pipe 30 is opened, and the air in the sealed space is introduced into the air purification tank 27 by the air pump 28. When the air passes through the purification assembly 29, the ZIF-8 nanoparticle porous active layer in the air effectively adsorbs and filters harmful components such as hydrogen sulfide and carbon monoxide, reducing environmental hazards and gaining valuable time for the safe evacuation of staff and emergency disposal.

[0057] When detecting a sharp increase in the concentration of dangerous gas or receiving a remote protection instruction, the controller 16 starts the two electric telescopic rods 21 to extend, which respectively push the first arm 341 of the first transmission arm 3401 and the second transmission arm 3402 to move. Taking the first transmission arm 3401 as an example, since the first support rod 354 is fixed in the guide rail 35 to form a stable fulcrum, the entire first transmission arm 3401 rotates around the first support rod 354. As the first transmission arm 3401 rotates, the second arm 342 moves in an arc, and the outer wall of the second arm 342 exerts a horizontal pushing force on the connecting arc groove 37, pushing the sliding frame 36 and the first protective shell 201 to move horizontally along the guide rail 35. In this process, the second support rod 371 slides from the top to the bottom in the mounting long groove 3421, and at the same time, the end of the second arm 342 gradually extends outward from the connecting arc groove 37. The movement process of the second transmission arm 3402 is the same as that of the first transmission arm 3401. When the first protective shell 201 and the second protective shell 202 are completely closed, the moisture-proof pad 24 on the inner wall of the protective shell is tightly attached to form an effective seal, completely isolating the gas detector 14, the controller 16, and other precision electronic components inside the collection tank 1 from the external harsh environment, preventing high-concentration harmful gases, high humidity, or dust from causing damage to the equipment.

[0058] When the environment in the sealed space returns to a safe state, the remote monitoring center can send an opening instruction to the signal transceiver 17, and the controller 16 controls the electric telescopic rod 21 to retract, and through the reverse movement of the first transmission arm 3401 and the second transmission arm 3402, the first protective shell 201 and the second protective shell 202 return to the position of mutual spacing.

[0059] When the device needs to be maintained or calibrated, the worker can replace or clean the purification assembly 29 through the maintenance door 32 on the front of the air purification box 27, ensuring that the air purification function continues to be effective. During the entire work process, the components of the device work together to ensure the accuracy and continuity of gas monitoring, and to achieve intelligent protection of the core electronic components, significantly improving the reliability and service life of the device in harsh environments in a closed space, and providing comprehensive protection for safety in a closed space.

[0060] In summary, the preferred embodiment of the present application provides a closed space gas component monitoring device, which drives the first transmission arm to rotate through the first driving member, drives the second transmission arm to rotate through the second driving member, and converts the power of the two driving members into single arc swing of the second arm of the first transmission arm and the second transmission arm. The arc swing of the second arm directly pushes the first protective shell and the second protective shell to move horizontally along the predetermined track, and the first protective shell and the second protective shell move in opposite directions to ensure normal operation of the device. When the harmful component concentration in the closed space is high in harsh environment or during non-detection period, the first protective shell and the second protective shell are attached to each other to cover the gas detector, which simplifies the transmission structure, reduces the risk of shaking, misplacement and wear caused by the gap between components caused by the complex transmission structure, ensures the accuracy and repeatability of each closing action of the protective shell, and makes it can be reliably reset to the sealing position, reduces the maintenance frequency, and prolongs the service life of the device.

[0061] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the technical field, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should be considered as the protection scope of the present application.

Claims

1. A device for monitoring the composition of a gas in a closed space, characterized in that The utility model relates to a kind of gas detector protection device, including: Fixed frame (8); Gas detector (14) is installed on the upper side of the fixed frame (8); First protective shell (201) is moved cover and is arranged at one side of the gas detector (14); Second protective shell (202) is moved cover and is arranged at the other side of the gas detector (14); First transmission arm (3401); Second transmission arm (3402); The first transmission arm (3401) and the second transmission arm (3402) are both provided with first arm (341) and second arm (342) arranged at an angle, the first arm (341) and the second arm (342) are rotatably connected to the fixed frame (8) at the angle, the second arm (342) of the first transmission arm (3401) is connected with the first protective shell (201), and the second arm (342) of the second transmission arm (3402) is connected with the second protective shell (202); First driving part, which is connected with the first arm (341) of the first transmission arm (3401), is used to drive the first arm (341) and the second arm (342) of the first transmission arm (3401) to rotate around the fixed frame (8), so as to drive the first protective shell (201) to move horizontally; Second driving part, which is connected with the first arm (341) of the second transmission arm (3402), is used to drive the first arm (341) and the second arm (342) of the second transmission arm (3402) to rotate around the fixed frame (8), so as to drive the second protective shell (202) to move horizontally.

2. The apparatus according to claim 1, wherein Both sides of the top of the fixed frame (8) are provided with horizontally extending guide rails (35), and each of the guide rails (35) is slidably provided with a sliding frame (36) at the top; The first protective shell (201) and the second protective shell (202) are respectively fixedly connected with one of the sliding frames (36); The second arm (342) of the first transmission arm (3401) and the second arm (342) of the second transmission arm (3402) are respectively connected with one of the sliding frames (36).

3. The apparatus of claim 2, wherein the gas sensor is a gas sensor for detecting a gas component in the enclosed space. The second arm (342) is provided with a mounting long groove (3421) extending along the length direction of the second arm (342), the guide rail (35) is provided with a first supporting rod (354), the bottom end of each of the sliding frames (36) is provided with a connecting arc groove (37), the connecting arc groove (37) is provided with a second supporting rod (371), the second end of the second arm (342) is located in the connecting arc groove (37), and the first supporting rod (354) and the second supporting rod (371) are both located in the mounting long groove (3421).

4. The apparatus of claim 3, wherein the gas sensor is a gas sensor for detecting a gas component in the enclosed space. Each of the guide rails (35) comprises first rails (351) and second rails (352) arranged in parallel and at intervals, and a positioning groove (353) is arranged between the first rails (351) and the second rails (352), and the first supporting rod (354) is arranged in the positioning groove (353).

5. The apparatus of claim 1, wherein, The lower part of the fixed frame (8) is symmetrically provided with two mounting frames (33). The first driving member and the second driving member are electric telescopic rods (21), the first end of each electric telescopic rod (21) is rotatably installed on the mounting rack (33), and the second end of each electric telescopic rod (21) is rotatably connected with the first arm (341).

6. A device for monitoring the composition of a gas in an enclosed space according to any one of claims 1 to 5, wherein Further comprising: A probe is arranged for detecting a gas component, a signal transmitter is arranged in the probe, and the signal transmitter is signal-connected with the gas detector (14); a lead screw (22) is arranged in the fixing frame (8), a sliding block (23) is arranged on the lead screw (22), a connecting rod (12) is fixed on the sliding block (23), a mounting disc (13) is arranged at the bottom of the connecting rod (12), and the probe is arranged on the mounting disc (13); A controller (16) is arranged, a signal transceiver (17) is arranged on the controller (16), and the controller (16) is electrically connected with the gas detector (14) and the driving device respectively; A collection box (1) is arranged on the top of the fixing frame (8), and the gas detector (14) and the controller (16) are arranged in the collection box (1).

7. A device for monitoring the composition of a gas in an enclosed space according to claim 6, wherein A connecting box (7) is further arranged between the top of the fixing frame (8) and the collection box (1), a motor (15) is arranged in the connecting box (7), the top of the lead screw (22) penetrates through the connecting box (7) and is connected with the output shaft of the motor (15), and the motor (15) is electrically connected with the controller (16).

8. The apparatus of claim 6, wherein the gas sensor is a gas sensor for detecting a gas component in the enclosed space. A storage battery (20) and a camera (19) are further arranged in the collection box (1), a monitoring port (3) is arranged on the side wall of the collection box (1), and the shooting end of the camera (19) is located in the monitoring port (3); The controller (16) and the camera (19) are electrically connected with the storage battery (20).

9. The apparatus of claim 6, wherein the apparatus is configured to determine the concentration of the gas in the enclosed space by comparing the measured value of the property of the gas to a predetermined value of the property of the gas. A temperature sensor (5) and a humidity sensor (6) are further arranged on the side wall of the collection box (1), and the temperature sensor (5) and the humidity sensor (6) are electrically connected with the controller (16); An audible and visual alarm (26) is further arranged on the collection box (1), and the audible and visual alarm (26) is electrically connected with the controller (16).

10. The apparatus of claim 6, wherein, Further comprising a base (10), a support frame (9) and an air purification box (27); The support frame (9) is fixed on the base (10), a support frame (9) is further arranged on the base (10), the air purification box (27) is arranged on the support frame (9), an electromagnetic valve is arranged in the air inlet pipe (30) of the air purifier, and the electromagnetic valve is electrically connected with the controller (16).

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