Combustible toxic gas monitoring system for calorimetric test

Abstract

The utility model discloses a combustible poisonous gas monitoring system for calorimetric testing, which belongs to the technical field of calorimetric testing and comprises a calorimeter machine table and a gas cylinder mounted on the top surface of the calorimeter machine table, and a movable sliding vertical plate is horizontally connected to the back surface of the calorimeter machine table in a sliding manner. A rotary top plate piece is rotationally installed on the top face of the movable sliding vertical plate, a detachable combustible poisonous gas detector is detachably clamped to the free end of the bottom face of the rotary top plate piece, a ventilation rectangular net box is fixedly installed on the bottom face of the rotary top plate piece, and the outer wall of the peripheral side of the ventilation rectangular net box is wrapped with a layer of wetted non-woven fabric; a negative pressure exhaust fan is installed in the ventilation rectangular net box and located on the bottom face of the rotary top plate piece, and a negative pressure exhaust pipe is connected to the position, above the negative pressure exhaust fan and located on the top face of the rotary top plate piece in a penetrating mode. Air circulation is guaranteed, foreign matter is prevented from entering the exhaust system through the net box structure, and the safety and reliability of the system are enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of calorimetry testing, in particular to a monitoring system for combustible and toxic gases used in calorimetry testing. Background Technique

[0002] With the development of the fine chemical industry, the requirements for safety technology are also increasing. Generally, calorimetry experiments need to be carried out before scale-up production to provide risk levels or process parameters for subsequent process design. Sometimes, combustible and toxic gases are used during the experiment. Especially when reacting with hydrogen, carbon monoxide, chlorine, etc., if leakage occurs, it may cause harm to the physical health and personal safety of experimental personnel. For this reason, a monitoring system for combustible and toxic gases coupled with a calorimeter is provided here. Currently, the existing calorimeter cannot discharge the leaked toxic gases during use, which easily leads to the accumulation of leaked toxic gases above the workbench of the calorimeter, thus easily causing harm to experimental personnel.

[0003] After retrieval, for example, the existing Chinese patent publication number: CN204882433U, a calorimeter includes an inner cylinder, an outer cylinder, and a stirring device. The inner cylinder is arranged inside the outer cylinder. The stirring device is arranged outside the outer cylinder and does not contact the outer cylinder. A stirring magnet is provided on the stirring device, and the stirring magnet is arranged inside the inner cylinder. A locator is provided at the bottom of the upper cover of the outer cylinder, and a piston is provided below the upper cover. Both the upper and lower surfaces of the piston are arc-shaped convex surfaces. A sealing ring is provided at the position where the piston contacts the inner cylinder. On the right side of the calorimeter main body, a platform that slopes downward is provided at the top. A display screen is arranged on the platform, and a controller, a water control device, and an automatic ignition device are arranged below the platform. The controller is respectively connected to the stirring device, the water control device, the automatic ignition device, and the display screen.

[0004] The cited patent literature also has the same problem. The calorimeter cannot discharge the leaked toxic gases during use, which easily leads to the accumulation of leaked toxic gases above the workbench of the calorimeter, thus easily causing harm to experimental personnel. Content of the Utility Model

[0005] The purpose of the utility model is to provide a monitoring system for combustible and toxic gases used in calorimetry testing to solve the problems raised in the background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A monitoring system for combustible and toxic gases used in calorimetric testing, including a calorimeter machine platform and a gas cylinder installed on the top surface of the calorimeter machine platform. A movable sliding vertical plate is horizontally slidably connected to the back surface of the calorimeter machine platform. A rotating top plate member is rotatably installed on the top surface of the movable sliding vertical plate. A detachable combustible and toxic gas detector is detachably clamped to the free end of the bottom surface of the rotating top plate member. A ventilated rectangular mesh box is fixedly installed on the bottom surface of the rotating top plate member. A layer of wet non-woven fabric is wrapped around the outer wall of the circumferential side of the ventilated rectangular mesh box. A negative pressure exhaust fan is installed in the ventilated rectangular mesh box and located on the bottom surface of the rotating top plate member. A negative pressure exhaust pipe is connected through the top surface of the rotating top plate member above the negative pressure exhaust fan.

[0007] Preferably, a rectangular installation opening is longitudinally opened at the top end of the movable sliding vertical plate. A rotating motor is installed on the inner bottom wall of the rectangular installation opening. The output end of the rotating motor is connected to the rotating top plate member.

[0008] Preferably, a connecting rod member is fixedly connected to the output shaft of the rotating motor. The connecting rod member is connected to the rotating top plate member through bolts.

[0009] Preferably, a guide rail slideway is fixedly connected to the back surface of the calorimeter machine platform. A slider support is fixedly installed on the inner wall of the movable sliding vertical plate. The slider support is slidably connected to the guide rail slideway in a matching manner.

[0010] Preferably, a positioning connection block is welded on the inner wall of the movable sliding vertical plate above the slider support.

[0011] Preferably, a plurality of positioning steel balls are equidistantly and rollingly embedded in the bottom surface of the positioning connection block. The positioning steel balls are in rolling friction contact with the top surface of the calorimeter machine platform.

[0012] Preferably, a clamping notch is opened at the middle position of the free end of the rotating top plate member. A T-shaped clamping rod welded to the top of the detachable combustible and toxic gas detector is clamped in the clamping notch.

[0013] Preferably, a first magnet block is embedded in the bottom surface of the T-shaped clamping rod. Second magnet blocks that magnetically attract the first magnet block are embedded on both sides of the clamping notch and on the top surface of the rotating top plate member.

[0014] Compared with the prior art, the technical effects and advantages of the present utility model:

[0015] The monitoring system for combustible and toxic gases used in calorimetry tests combines a detachable combustible and toxic gas detector with a negative pressure exhaust fan. This technical solution can instantaneously monitor and rapidly remove leaked harmful gases, significantly reducing the risk of safety accidents during experimental operations and ensuring the life safety and physical health of experimental personnel. The combination of the negative pressure exhaust fan with a ventilation rectangular mesh box and non-woven fabric not only effectively sucks and discharges harmful gases but also preliminarily filters pollutants in the air, improves the air quality in the laboratory, and reduces environmental pollution.

[0016] The non-woven fabric is wrapped around the outer wall of the circumferential side of the ventilation rectangular mesh box. Through its capillary action, it absorbs and retains moisture. In combination with the negative pressure exhaust, it can preliminarily filter particulate matter in the air. At the same time, the moist non-woven fabric also helps to adsorb some harmful gas molecules, increasing the purification effect. The ventilation rectangular mesh box is installed on the bottom surface of the rotating top plate member and used in combination with the negative pressure exhaust fan, which not only ensures air circulation but also prevents foreign objects from entering the exhaust system through the mesh box structure, enhancing the safety and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the split state of the guide rail slideway and the slider support of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the split state of the rotating top plate member and the ventilation rectangular mesh box of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the split state of the movable sliding vertical plate and the rotating top plate member of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the split state of the clamping notch and the T-shaped clamping rod of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the split state of the positioning connection block and the positioning steel ball of the present invention.

[0024] Explanation of the reference numerals in the drawings:

[0025] In the figure: 1. Calorimeter machine platform; 2. Gas cylinder; 3. Cabinet door; 4. Movable sliding vertical plate; 5. Guide rail slideway; 6. Rotating top plate part; 7. Detachable combustible and toxic gas detector; 8. Positioning connection block; 9. Slide block support; 10. Negative pressure exhaust duct; 11. Non-woven fabric; 12. Ventilated rectangular mesh box; 13. Negative pressure exhaust fan; 14. Connecting ear plate; 15. Rectangular installation opening; 16. Rotating motor; 17. Connecting rod part; 18. Clamping notch; 19. T-shaped clamping rod; 20. First magnet block; 21. Second magnet block; 22. Positioning steel ball. Detailed implementation manners

[0026] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0027] Unless otherwise defined, the directions such as up, down, left, right, front, back, inside and outside involved herein are based on the up, down, left, right, front, back, inside and outside in the figure shown by the present utility model, and are hereby explained together.

[0028] This embodiment discloses a monitoring system for combustible and toxic gases for calorimetric testing as Figures 1 to 6 shown, which includes a calorimeter machine platform 1 and a gas cylinder 2 installed on the top surface of the calorimeter machine platform 1. A cabinet door 3 is hinged to the front side of the calorimeter machine platform 1 through a hinge. A display screen and operation buttons are provided above the cabinet door 3. A movable sliding vertical plate 4 is horizontally slidably connected to the back surface of the calorimeter machine platform 1. A guide rail slideway 5 is fixedly connected to the back surface of the calorimeter machine platform 1. A slide block support 9 is fixedly installed on the inner wall of the movable sliding vertical plate 4. The slide block support 9 is slidably connected to the guide rail slideway 5 in a matching manner. Above the slide block support 9 and on the inner wall of the movable sliding vertical plate 4, a positioning connection block 8 is welded. A plurality of positioning steel balls 22 are equidistantly and rollingly embedded in the bottom surface of the positioning connection block 8. The positioning steel balls 22 are in rolling friction contact with the top surface of the calorimeter machine platform 1.

[0029] Specifically, through the cooperation of the movable sliding vertical plate 4 and the guide rail slideway 5 by means of the slide block support 9, the horizontal sliding on the back surface of the calorimeter machine platform 1 is realized. The rotating top plate part 6 and the detachable combustible and toxic gas detector 7 carried thereon can move to any required position along the back surface of the machine platform, enhancing the flexibility and coverage of the monitoring system and facilitating accurate gas monitoring for different experimental positions.

[0030] Specifically, the positioning connection block 8 is welded to the inner wall of the moving sliding vertical plate 4. Through the rolling contact of the positioning steel balls 22 on its bottom surface with the top surface of the calorimeter machine table 1, precise positioning and stable support of the moving sliding vertical plate 4 are achieved, vibrations during movement are reduced, and the stability and durability of the system are improved.

[0031] Specifically, a rotating top plate member 6 is rotatably installed on the top surface of the moving sliding vertical plate 4. A rectangular installation opening 15 is longitudinally opened at the top end of the moving sliding vertical plate 4. A rotating motor 16 is installed on the inner bottom wall of the rectangular installation opening 15. The output end of the rotating motor 16 is connected to the rotating top plate member 6. A connecting rod member 17 is fixedly connected to the output shaft of the rotating motor 16. The connecting rod member 17 is connected to the rotating top plate member 6 by bolts.

[0032] Specifically, the rotating top plate member 6 is installed on the top of the moving sliding vertical plate 4 and can rotate around its own axis. Driven by the rotating motor 16, the direction of the detachable combustible and toxic gas detector 7 can be changed, realizing all-round and dead-angle-free gas monitoring, and enhancing the monitoring efficiency and range.

[0033] Specifically, the detachable combustible and toxic gas detector 7 is detachably clamped to the free end of the bottom surface of the rotating top plate member 6. A ventilated rectangular mesh box 12 is fixedly installed on the bottom surface of the rotating top plate member 6. A layer of wet non-woven fabric 11 is wrapped around the outer wall of the circumference of the ventilated rectangular mesh box 12. A negative pressure exhaust fan 13 is installed in the ventilated rectangular mesh box 12 and on the bottom surface of the rotating top plate member 6. A negative pressure exhaust pipe 10 is connected through and penetrates the top surface of the rotating top plate member 6 above the negative pressure exhaust fan 13. Connecting ear plates 14 are symmetrically welded to the outer wall of the circumference of the negative pressure exhaust fan 13. Both of the two connecting ear plates 14 are connected to the rotating top plate member 6 by bolts.

[0034] Specifically, the negative pressure exhaust pipe 10 is connected to the negative pressure exhaust fan 13 to form a gas discharge channel. When the negative pressure exhaust fan 13 is started, it can effectively extract harmful gases from the experimental area, reduce gas accumulation, and lower the risk of explosion or poisoning.

[0035] Specifically, the non-woven fabric 11 is wrapped around the outer wall of the circumference of the ventilated rectangular mesh box 12. Through its capillary action, it absorbs and retains moisture. In combination with negative pressure exhaust, it can initially filter particulate matter in the air. At the same time, the wet non-woven fabric 11 also helps to adsorb some harmful gas molecules, increasing the purification effect. The ventilated rectangular mesh box 12 is installed on the bottom surface of the rotating top plate member 6 and used in combination with the negative pressure exhaust fan 13, which not only ensures air circulation but also prevents foreign objects from entering the exhaust system through the mesh box structure, enhancing the safety and reliability of the system.

[0036] Specifically, a clamping notch 18 is provided at the middle position of the free end of the rotating top plate member 6. A T-shaped clamping rod 19 that is clamped in the clamping notch 18 is welded to the top of the detachable combustible and toxic gas detector 7. A first magnet block 20 is embedded in the bottom surface of the T-shaped clamping rod 19. Second magnet blocks 21 that magnetically attract the first magnet block 20 are embedded in both sides of the clamping notch 18 and on the top surface of the rotating top plate member 6. The magnetic attraction between the second magnet block 21 and the first magnet block 20 increases the connection strength between the detachable combustible and toxic gas detector 7 and the rotating top plate member 6. Through magnetic attraction, not only is the installation convenience improved, but also the installation or removal of the detector can be quickly completed without using tools, enhancing the usability and response speed of the system.

[0037] Specifically, the detachable combustible and toxic gas detector 7 is quickly installed and disassembled through a clamping structure, which is convenient for maintenance and calibration. It can continuously sense the concentration of combustible and toxic gases in the environment. Once a harmful gas leak is detected, it immediately triggers an alarm to ensure personnel safety and prompt response measures can be taken.

[0038] Specifically, the T-shaped clamping rod 19 is welded to the top of the detachable combustible and toxic gas detector 7, and its shape matches that of the clamping notch 18. Through a simple insertion and locking action, the detachable combustible and toxic gas detector 7 can be quickly fixed to the rotating top plate member 6, ensuring a stable connection of the detector during use and preventing it from falling off due to vibration or movement.

[0039] Specifically, a PLC for controlling the opening and closing of each device is installed inside the calorimeter machine table 1. The PLC model can be selected according to actual needs. In this utility model, the PLC model is S7-200, which has the advantages of high reliability, strong anti-interference ability, and convenient maintenance.

[0040] Working principle:

[0041] For the monitoring system of combustible and toxic gases for calorimetry testing, the movable sliding vertical plate 4 is installed on the guide rail slide 5 on the back of the calorimeter machine table 1 through the slider support 9, allowing it to freely slide in the horizontal direction. Then, the rotating top plate member 6 is installed on the top of the movable sliding vertical plate 4 through the rotating motor 16. The rotating motor 16 is connected to the movable sliding vertical plate 4 through the rectangular installation opening 15, ensuring that the rotating top plate member 6 can rotate as needed to cover a wider monitoring range. At this time, the detachable combustible and toxic gas detector 7 is magnetically connected to the clamping notch 18 on the rotating top plate member 6 through the T-shaped clamping rod 19, and the mutual attraction between the first magnet block 20 and the second magnet block 21 is utilized to achieve quick and stable installation;

[0042] After the experiment starts, the detachable combustible and toxic gas detector 7 monitors the gas concentration in the surrounding environment in real time. The detector is equipped with a high-sensitivity sensor that can quickly identify the presence of combustible and toxic gases such as hydrogen, carbon monoxide, and chlorine. Once the gas concentration exceeds the preset safety threshold, the detector immediately sends an alarm signal to the PLC to alert the experimenters to take corresponding safety measures to prevent potential dangerous situations.

[0043] Meanwhile, the ventilated rectangular mesh box 12 on the bottom surface of the rotating top plate member 6 and the built-in negative pressure exhaust fan 13 start working, causing the potential combustible and toxic gases in the experimental area to concentrate towards the ventilated rectangular mesh box 12. The non-woven fabric 11 wraps around the outer wall of the ventilated rectangular mesh box 12 and uses its wetting property to initially filter the dust and some harmful gas molecules in the air. Subsequently, these harmful gases are inhaled by the negative pressure exhaust fan 13 through the ventilated rectangular mesh box 12 and discharged outdoors or to a safety treatment facility via the negative pressure exhaust pipe 10.

[0044] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0045] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A monitoring system for combustible and toxic gases used in calorimetry tests, comprising a calorimeter machine platform (1) and a gas cylinder (2) installed on the top surface of the calorimeter machine platform (1), characterized in that: A movable sliding vertical plate (4) is horizontally slidably connected to the back surface of the calorimeter machine platform (1). A rotating top plate member (6) is rotatably installed on the top surface of the movable sliding vertical plate (4). A detachable combustible and toxic gas detector (7) is detachably clamped to the free end of the bottom surface of the rotating top plate member (6). A ventilated rectangular mesh box (12) is fixedly installed on the bottom surface of the rotating top plate member (6). A layer of wet non-woven fabric (11) is wrapped around the outer wall of the circumference of the ventilated rectangular mesh box (12). A negative pressure exhaust fan (13) is installed in the ventilated rectangular mesh box (12) and located on the bottom surface of the rotating top plate member (6). A negative pressure exhaust pipe (10) is connected through and penetrates the top surface of the rotating top plate member (6) above the negative pressure exhaust fan (13).

2. The monitoring system for combustible and toxic gases used in calorimetric testing according to claim 1, characterized in that: A rectangular installation opening (15) is longitudinally opened at the top end of the movable sliding vertical plate (4). A rotating motor (16) is installed on the inner bottom wall of the rectangular installation opening (15). The output end of the rotating motor (16) is connected to the rotating top plate member (6).

3. The monitoring system for flammable and toxic gases used in calorimetric testing according to claim 2, wherein: A connecting rod member (17) is fixedly connected to the output shaft of the rotating motor (16). The connecting rod member (17) is connected to the rotating top plate member (6) by bolts.

4. The monitoring system for combustible and toxic gases used in calorimetric tests according to claim 3, wherein: A guide rail slideway (5) is fixedly connected to the back surface of the calorimeter machine platform (1). A slider support (9) is fixedly installed on the inner wall of the movable sliding vertical plate (4). The slider support (9) is slidably connected to the guide rail slideway (5) in a matching manner.

5. The monitoring system for flammable and toxic gases used for calorimetric testing according to claim 4, characterized in that: A positioning connection block (8) is welded on the inner wall of the movable sliding vertical plate (4) above the slider support (9).

6. The monitoring system for flammable and toxic gases used in calorimetric testing according to claim 5, wherein: A plurality of positioning steel balls (22) are equidistantly and rollingly embedded in the bottom surface of the positioning connection block (8). The positioning steel balls (22) are in rolling friction contact with the top surface of the calorimeter machine platform (1).

7. The monitoring system for combustible and toxic gases used in calorimetric tests according to claim 6, characterized in that: A clamping notch (18) is opened at the middle position of the free end of the rotating top plate member (6). A T-shaped clamping rod (19) clamped in the clamping notch (18) is welded to the top of the detachable combustible and toxic gas detector (7).

8. The monitoring system for flammable and toxic gases used in calorimetric tests according to claim 7, wherein: A first magnet block (20) is embedded in the bottom surface of the T-shaped clamping rod (19). Second magnet blocks (21) that magnetically attract the first magnet block (20) are embedded on both sides of the clamping notch (18) and on the top surface of the rotating top plate member (6).

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