Gas monitoring device for hazardous chemical substance storage

Abstract

The utility model relates to the technical field of hazardous chemical substance storage auxiliary equipment, in particular to a gas monitoring device for hazardous chemical substance storage, which comprises an outer shell, a gas monitor and a controller, a draft fan is arranged at one end, far away from the gas monitor, of the outer shell, and a gas filtering piece is arranged on one side, close to the draft fan, in the outer shell. The outer shell is provided with a sealed cold water cavity located on the rear side of the gas filter part, a gas guide pipe is arranged on the side, close to the gas filter part, of the sealed cold water cavity and extends into the sealed cold water cavity to be provided with a condensing coil, and the rear end of the condensing coil extends to the outer side of the sealed cold water cavity and is provided with a gas guide pipe arranged on the gas monitor. Compared with the prior art, the device has the advantages that impurities in gas can be filtered through front-side gas filtration, meanwhile, frequent dehumidification operation can be achieved through internal condensation operation, drying agents do not need to be replaced regularly, use is more convenient, and therefore the influence of the environment on the monitor can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for storing hazardous chemicals, in particular to a gas monitoring device for storing hazardous chemicals. Background Technique

[0002] Hazardous substances refer to substances with properties such as explosion, flammability, toxicity, corrosion, radioactivity, etc., which are prone to cause casualties and property damage during transportation, loading and unloading, and storage, and thus require special protection.

[0003] Conventional hazardous chemicals generally have the characteristic of being volatile. Therefore, when storing them, some gas monitoring devices are usually placed in the storage warehouse or room to detect the concentration of gaseous hazardous chemicals in the air. However, when placed in the same position for a long time, some specific environmental humid gases and air impurities will affect the detection sensor and reduce its sensitivity, which easily leads to untimely monitoring and thus causes danger. Most of the existing drying methods simply use desiccants for adsorption. However, for monitoring devices that operate for a long time, the desiccants need to be replaced regularly, and the corresponding usage cost is relatively high. Moreover, for volatile hazardous chemicals with larger molecules, the desiccants with smaller pores are prone to adsorption, which affects the monitoring. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a gas monitoring device for storing hazardous chemicals in view of the deficiency that humidity and impurities will affect the monitoring sensor as mentioned in the above background technique.

[0005] To solve the above technical problem, the technical solution provided by the utility model is: a gas monitoring device for storing hazardous chemicals, including an outer shell body. A gas monitor and a controller are connected and arranged at the rear end inside the outer shell body. An exhaust fan is connected to one end of the outer shell body far away from the gas monitor. A gas filter element is connected and arranged on one side of the outer shell body close to the exhaust fan. A sealed cold water chamber is connected and arranged on the rear side of the outer shell body where the gas filter element is located. A first air duct is connected to one side of the sealed cold water chamber close to the gas filter element. The first air duct extends into the sealed cold water chamber and is connected with a condensing coil pipe. The rear end of the condensing coil pipe extends to the outside of the sealed cold water chamber and is connected with a second air duct arranged on the gas monitor.

[0006] An exhaust pipe extending to the outside is connected to the rear end of the gas monitor, and a one-way valve is connected to the exhaust pipe.

[0007] One side of the sealed cold water cavity is connected with a semiconductor refrigeration plate, the front side of the sealed cold water cavity is connected with a temperature sensor, the bottom of the condensation coil is connected with a plurality of water guide pipes, the bottoms of the plurality of water guide pipes are jointly connected with a water collecting pipe, the bottom of the water collecting pipe is connected with a drain pipe extending to the outer bottom, and an electric control valve is connected to the drain pipe.

[0008] Further, a pre-filter screen plate is connected between the exhaust fan and the gas filter element, and a second sealing door corresponding to the position between the exhaust fan and the pre-filter screen plate is connected to the front side of the outer shell, which is convenient for pre-filtering operations.

[0009] Further, a desiccant adsorption layer is connected to the middle of the second air duct, which is convenient for adsorbing moisture at the back end.

[0010] Further, a first sealing door for cooperating with the sealed cold water cavity, the desiccant adsorption layer and the gas monitor is connected to the top of the outer shell, which is convenient for maintenance and repair operations.

[0011] Further, the heat dissipation surface of the semiconductor refrigeration plate extends to the outside and is connected with a heat dissipation box, the semiconductor refrigeration plate extends into the heat dissipation box and is connected with a heat dissipation metal plate, and a heat dissipation fan is connected to the outside of the heat dissipation box, which is convenient for dissipating heat from the semiconductor refrigeration plate.

[0012] Further, the gas filter element includes an outer support frame plate, a filter cloth cover is connected to the inner side of the support frame plate and a support net for clamping the filter cloth cover, and the support frame plate extends to the outside and is connected with a sealing fixing plate, which is convenient for filtering fine particles.

[0013] Further, sealing rubber pads are connected to both the outer side of the support frame plate and the inner side of the sealing fixing plate, which is convenient for sealing operations around the gas filter element.

[0014] Further, an alarm is connected to the front side of the outer shell and is electrically connected to the gas monitor and the controller, which is convenient for alarm operations when abnormalities are detected.

[0015] The advantages of a gas monitoring device for storing dangerous chemicals of the present utility model compared with the prior art are as follows: Through the front-side gas filtration, impurities in the gas can be filtered, and at the same time, through the internal condensation operation, dehumidification operations can be carried out frequently, so that there is no need to replace the desiccant regularly, and the use is more convenient, thereby reducing the impact of the environment on the monitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the first structural schematic diagram of a gas monitoring device for storing dangerous chemicals of the present utility model.

[0017] Figure 2 It is the second structural schematic diagram of a gas monitoring device for hazardous chemical storage of the present utility model.

[0018] Figure 3 It is the front sectional structural schematic diagram of a gas monitoring device for hazardous chemical storage of the present utility model.

[0019] Figure 4 It is the side sectional structural schematic diagram of a gas monitoring device for hazardous chemical storage of the present utility model.

[0020] Figure 5 It is the top sectional structural schematic diagram of a gas monitoring device for hazardous chemical storage of the present utility model.

[0021] Figure 6 It is the structural schematic diagram of a gas filter element of a gas monitoring device for hazardous chemical storage of the present utility model.

[0022] As shown in the figure: 1. Outer shell; 2. Exhaust fan; 3. Pre-filter plate; 4. Gas filter element; 5. Sealed cold water chamber; 6. First air duct; 7. Condensing coil; 8. Second air duct; 9. Gas monitor; 10. Desiccant adsorption layer; 11. Exhaust pipe; 12. Check valve; 13. Thermoelectric cooler; 14. Temperature sensor; 15. Heat dissipation metal plate; 16. Heat dissipation box; 17. Heat dissipation fan; 18. Water conduit; 19. Water collecting pipe; 20. Drain pipe; 21. Electric control valve; 22. Controller; 23. Support plate; 24. Filter cloth cover; 25. Support net; 26. Sealed fixing plate; 27. Sealing rubber pad; 28. Alarm; 29. First sealing door; 30. Second sealing door. Specific embodiments

[0023] The following further elaborates on the present utility model in conjunction with the attached drawings.

[0024] Combined with the attached Figure 1-6, a gas monitoring device for hazardous chemical storage, comprising an outer casing 1. A gas monitor 9 and a controller 22 are connected and provided at the rear end inside the outer casing 1. The gas monitor 9 needs to be replaced with different models according to the types of hazardous chemicals. The controller 22 is a single-chip microcomputer controller, which is convenient for controlling the electrical components inside the device. One end of the outer casing 1 far from the gas monitor 9 is connected with an exhaust fan 2. Through the exhaust fan 2, gas can be quickly drawn into the interior of the outer casing 1 for filtration, condensation and monitoring operations. A gas filter element 4 is connected and provided on one side of the outer casing 1 close to the exhaust fan 2. A pre-filter screen plate 3 is connected between the exhaust fan 2 and the gas filter element 4. Through the pre-filter screen plate 3 and the gas filter element 4, larger and smaller garbage impurities can be filtered. A second sealing door 30 corresponding to the position between the exhaust fan 2 and the pre-filter screen plate 3 is connected and provided on the front side of the outer casing 1. Opening the second sealing door 30 can clean the larger garbage filtered by the pre-filter screen plate 3. The gas filter element 4 includes an outer support frame plate 23. A filter cloth cover 24 and a support net 25 for clamping the filter cloth cover 24 are connected and provided inside the support frame plate 23. The support frame plate 23 extends to the outside and is connected with a sealing fixing plate 26. Sealing rubber gaskets 27 are connected and provided on the outer side of the support frame plate 23 and the inner side of the sealing fixing plate 26. By disassembling the sealing fixing plate 26, the internal filter cloth cover 24 can be cleaned. When the sealing rubber gasket 27 is disassembled and reinstalled, it can prevent gas from seeping in from the surrounding area.

[0025] The described outer housing 1 is connected with a sealed cold water chamber 5 at the rear side of the gas filter element 4. The sealed cold water chamber 5 is connected with a first air duct 6 on the side close to the gas filter element 4. The first air duct 6 extends into the sealed cold water chamber 5 and is connected with a condensation coil 7. The rear end of the condensation coil 7 extends outside the sealed cold water chamber 5 and is connected with a second air duct 8 provided for the gas monitor 9. One side inside the sealed cold water chamber 5 is connected with a semiconductor refrigeration plate 13. The front side inside the sealed cold water chamber 5 is connected with a temperature sensor 14. Through the cooperation of the semiconductor refrigeration plate 13 and the temperature sensor 14 with the controller 22, the low temperature inside the sealed cold water chamber 5 can be controlled. Thus, when the gas passes through the long condensation coil 7, condensation operation can be carried out, so as to ensure the dryness of the gas and reduce the influence on the rear detector. The bottom of the condensation coil 7 is connected with a plurality of water guide pipes 18. The bottoms of the plurality of water guide pipes 18 are jointly connected with a water collecting pipe 19. The bottom of the water collecting pipe 19 is connected with a drain pipe 20 extending to the outer bottom. An electric control valve 21 is connected to the drain pipe 20. The electric control valve 21 is controlled by the controller 22 and starts regularly. The starting frequency is set according to the air humidity of the monitored area. If the air humidity is relatively high, the frequency can be increased. The heat dissipation surface of the semiconductor refrigeration plate 13 extends to the outside and is connected with a heat dissipation box 16. The semiconductor refrigeration plate 13 extends into the heat dissipation box 16 and is connected with a heat dissipation metal plate 15. A heat dissipation fan 17 is connected to the outside of the heat dissipation box 16. The semiconductor refrigeration plate 13 can be quickly dissipated heat through the heat dissipation metal plate 15 and the heat dissipation fan 17.

[0026] The rear end of the described gas monitor 9 is connected with an exhaust pipe 11 extending to the outside. A one-way valve 12 is connected to the exhaust pipe 11. Through the one-way valve 12, only the gas monitor 9 can exhaust gas outward to prevent foreign matters from entering through the exhaust pipe 11. A desiccant adsorption layer 10 is connected to the middle of the second air duct 8. The setting of the desiccant adsorption layer 10 needs to be set according to the molecular size of the hazardous chemicals. If the molecules of the hazardous chemicals are relatively large, the desiccant adsorption layer 10 can not be installed. At the same time, when installing the desiccant adsorption layer 10, desiccants with larger voids need to be selected. The top of the outer housing 1 is connected with a first sealing door 29 that cooperates with the sealed cold water chamber 5, the desiccant adsorption layer 10 and the gas monitor 9. An alarm 28 electrically connected to the gas monitor 9 and the controller 22 is connected to the front side of the outer housing 1.

[0027] The above has described the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention creation, they shall fall within the protection scope of the present invention.

Claims

1. A gas monitoring device for storing hazardous chemicals, comprising an outer shell (1), wherein a gas monitor (9) and a controller (22) are connected to the rear end of the outer shell (1), and characterized in that: The outer shell (1) is connected to an exhaust fan (2) at one end away from the gas monitor (9), and a gas filter (4) is connected to the inner side of the outer shell (1) near the exhaust fan (2). The outer shell (1) is connected to a sealed cold water chamber (5) at the rear side of the gas filter (4), and a first air guide pipe (6) is connected to the sealed cold water chamber (5) near the gas filter (4). The first air guide pipe (6) extends into the sealed cold water chamber (5) and is connected to a condensation coil (7). The rear end of the condensation coil (7) extends to the outer side of the sealed cold water chamber (5) and is connected to a second air guide pipe (8) provided with the gas monitor (9). The rear end of the gas monitor (9) is connected to an exhaust pipe (11) extending to the outside, and the exhaust pipe (11) is connected to a one-way valve (12); A semiconductor refrigeration plate (13) is connected to one side of the sealed cold water chamber (5), a temperature sensor (14) is connected to the front side of the sealed cold water chamber (5), a plurality of water pipes (18) are connected to the bottom of the condensing coil (7), a water collecting pipe (19) is commonly connected to the bottom of the plurality of water pipes (18), a drainage pipe (20) extending to the outer bottom is connected to the bottom of the water collecting pipe (19), and an electric control valve (21) is connected to the drainage pipe (20).

2. A gas monitoring device for storage of hazardous chemicals according to claim 1, characterized in that: A pre-filter screen (3) is connected between the exhaust fan (2) and the gas filter (4), and a second sealing door (30) corresponding to the exhaust fan (2) and the pre-filter screen (3) is connected to the front side of the outer shell (1).

3. A gas monitoring device for hazardous chemicals storage according to claim 1, characterized in that: A desiccant adsorption layer (10) is connected to the middle of the second air guide tube (8).

4. A gas monitoring device for storage of hazardous chemicals according to claim 3, characterized in that: The top of the outer shell (1) is connected to a first sealing door (29) which cooperates with the sealed cold water chamber (5), the desiccant adsorption layer (10) and the gas monitor (9).

5. A gas monitoring device for storage of hazardous chemicals according to claim 1, characterized in that: The heat dissipation surface of the semiconductor refrigeration plate (13) extends to the outside and is connected to a heat dissipation box (16), the semiconductor refrigeration plate (13) extends to the inside of the heat dissipation box (16) and is connected to a heat dissipation metal plate (15), and the outside of the heat dissipation box (16) is connected to a heat dissipation fan (17).

6. A gas monitoring device for storage of hazardous chemicals according to claim 1, characterized in that: The gas filter (4) comprises an outer support frame plate (23), the inner side of which is connected to a filter cloth cover (24) and a support net (25) for clamping the filter cloth cover (24), and the support frame plate (23) extends to the outside and is connected to a sealing fixing plate (26).

7. A gas monitoring device for storage of hazardous chemicals according to claim 6, characterized in that: The outer side of the support frame plate (23) and the inner side of the sealing fixing plate (26) are both connected with a sealing rubber pad (27).

8. A gas monitoring device for hazardous chemicals storage according to claim 1, characterized in that: The front side of the outer shell (1) is connected to an alarm (28) which is electrically connected to the gas monitor (9) and the controller (22).

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