Ventilation cabinet system for combustion micro-explosion experiment
By designing a fume hood system for combustion micro-explosion experiments, including a fume hood body, air duct, combustion chamber and micro-explosion chamber, and setting up a micro-explosion chamber to connect to the combustion chamber, the safety hazards existing in the traditional fume hood in combustion micro-explosion experiments are solved, achieving higher experimental safety.
Patent Information
- Application Number
- CN202420546135.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-20
AI Technical Summary
Traditional fume hoods have safety hazards in combustion micro-explosion experiments, making it difficult to effectively prevent the hazards caused during the experiment.
A fume hood system for combustion micro-explosion experiments is designed, including a fume hood body, air duct, combustion chamber and micro-explosion chamber. By setting up a micro-explosion chamber to communicate with the combustion chamber, the micro-explosion chamber can collect fireballs and reduce the explosion pressure to protect the safety of experimental operations.
It effectively solves the safety hazards of traditional fume hoods in combustion micro-explosion experiments, ensures the safety of the experimental operation process and prevents the hazards generated in the experiments, and improves the safety of the experiments.
Smart Images
Figure CN222587604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of experimental equipment, in particular to a fume hood system for combustion micro-explosion experiments. Background Art
[0002] The combustion micro-explosion experiment is one of the important experiments in the fields of chemistry, biology, materials, etc., such as flammable gas mixed explosion test, mixed material ignition point test, etc. However, the use of traditional fume hoods in combustion micro-explosion experiments will pose a safety hazard. Utility Model Content
[0003] In view of this, the utility model provides a fume hood system for combustion micro-explosion experiments, which is used to solve the problem of potential safety hazards in the prior art when fume hoods currently on the market are used in combustion micro-explosion experiments.
[0004] To achieve one or part or all of the above purposes or other purposes, the utility model proposes a fume hood system for combustion micro-explosion experiments, the fume hood system for combustion micro-explosion experiments comprising: a fume hood body, the fume hood body being provided with an air duct for ventilation, a combustion chamber for operating a combustion experiment and a micro-explosion chamber for pressure relief; the combustion chamber is connected to the micro-explosion chamber through a first air port; the air duct is connected to the combustion chamber through a second air port; the air duct is connected to the micro-explosion chamber through a third air port.
[0005] In the fume hood system for combustion micro-explosion experiments described in this embodiment, the micro-explosion chamber is provided with a pressure relief port connected to the air duct.
[0006] In the fume hood system for combustion micro-explosion experiment described in this embodiment, the third air outlet of the micro-explosion chamber connected to the air duct is arranged in the micro-explosion chamber close to the inner side of the fume hood body.
[0007] In the combustion micro-explosion experiment fume hood system described in this embodiment, a pressure relief movable cover for closing the pressure relief port is provided at the pressure relief port, and the pressure relief movable cover is fixed to the pressure relief port via a hinge connection. The hinge connection is located at a side of the pressure relief port close to the air duct.
[0008] In the fume hood system for combustion micro-explosion experiments described in this embodiment, the air duct is arranged inside the fume hood body.
[0009] In the fume hood system for combustion micro-explosion experiments described in this embodiment, the bottom of the combustion chamber is made of flame-retardant soft bottom material.
[0010] In the fume hood system for combustion micro-explosion experiments described in this embodiment, flame-retardant curtains are arranged on both sides of the combustion chamber; the flame-retardant curtains include a plurality of flame-retardant strips arranged in parallel, and the flame-retardant strips are made of soft material.
[0011] In the fume hood system for combustion micro-explosion experiments described in this embodiment, the flame retardant curtain also includes curtain rods arranged at both ends of the flame retardant strip, and the flame retardant strip is arranged vertically to the curtain rod; a curtain groove for setting the curtain rod is provided on the top of the combustion chamber.
[0012] In the fume hood system for combustion and micro-explosion experiments described in this embodiment, both the combustion chamber and the micro-explosion chamber are provided with observation windows equipped with explosion-proof glass.
[0013] In the fume hood system for combustion and micro-explosion experiments described in this embodiment, the combustion chamber and the micro-explosion chamber are detachably arranged in the fume hood body.
[0014] Compared with the prior art, the present application will have the following beneficial effects: in the present embodiment, by arranging the micro-explosion chamber to be connected with the combustion chamber, when a small-scale deflagration occurs in the combustion chamber during a combustion micro-explosion experiment, the micro-explosion chamber can collect fireballs and reduce the deflagration pressure, and can protect the safety of various combustion micro-explosion experiment operation processes and the safety of splashing experiment operation processes, fully prevent the hazards caused by the combustion micro-explosion experiment process, and effectively solve the safety hazards of traditional fume hoods in combustion micro-explosion experiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic diagram of the principle of a fume hood system for combustion micro-explosion experiments of the utility model.
[0017] Figure 2 It is a structural schematic diagram of the combustion chamber and micro-explosion chamber of the utility model.
[0018] Figure 3 It is a schematic diagram of the structure of the flame retardant curtain in the utility model.
[0019] Figure 4 It is a structural schematic diagram of a fume hood system for combustion micro-explosion experiments of the utility model.
[0020] Figure 5 It is a structural schematic diagram of the combustion chamber and micro-explosion chamber of the utility model.
[0021] Figure 6 It is a structural schematic diagram of the combustion chamber of the utility model.
[0022] Reference numerals:
[0023] 1. Combustion chamber; 11. First air outlet; 12. Second air outlet; 13. Flame retardant curtain; 131. Curtain rod; 132. Flame retardant strip; 14. Observation window; 2. Micro-explosion chamber; 21. Third air outlet; 22. Pressure relief port; 23. Pressure relief movable cover; 24. Pressure relief movable cover; 3. Air duct; 4. Upper box; 5. Lower box; 6. Intelligent control device; 7. Fume cabinet. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 Some embodiments of the present application disclose a fume hood system for combustion micro-explosion experiments, which comprises a fume hood body 7, in which an air duct 3 for ventilation, a combustion chamber 1 for operating a combustion experiment, and a micro-explosion chamber 2 for pressure relief are arranged. The combustion chamber 1 is connected to the micro-explosion chamber 2 through a first air port 11. The air duct 3 is connected to the combustion chamber 1 through a second air port 12. The air duct 3 is connected to the micro-explosion chamber 2 through a third air port 21.
[0026] In this embodiment, by setting the micro-explosion chamber 2 to be connected with the combustion chamber 1, during the combustion micro-explosion experiment, when a small-scale deflagration occurs in the combustion chamber 1, the micro-explosion chamber 2 can collect fireballs and reduce the deflagration pressure, fully preventing the hazards caused during the combustion micro-explosion experiment, and effectively solving the safety hazards of traditional fume hoods in combustion micro-explosion experiments.
[0027] Specifically, in the present embodiment, the composition of the fume hood system for combustion micro-explosion experiment includes: a fume hood, a combustion chamber 1, a micro-explosion chamber 2 and an intelligent control device 6. The principle is that the experimenter arranges a fully automatic or semi-automatic material mixing action. This action has a certain degree of flammability and explosion, so the mixing action needs to be completed in the fume hood. In order to further ensure the safety of the experiment, the experiment needs to be carried out in the combustion chamber 1 in the fume hood. The combustion chamber 1 is a small independent room specially designed for explosives, and there is a micro-explosion chamber 2 on it. When a small-scale deflagration occurs in the combustion chamber 1, the micro-explosion chamber 2 can play a good role in collecting fireballs and reducing the deflagration pressure. The fume hood system for combustion micro-explosion experiment in the present application is particularly suitable for flammable and explosive experiments, as well as experiments with splashing high-temperature corrosive liquid processes.
[0028] In this embodiment, the micro-explosion chamber 2 and the combustion chamber 1 can be integrated with the fume hood 7, or the micro-explosion chamber 2, the combustion chamber 1 and the fume hood 7 can be designed to be detachable.
[0029] In some embodiments, the combustion chamber 1 and the micro-explosion chamber 2 are detachably arranged, the equipment is easy to disassemble and install, and has strong adaptability. In addition, the combustion chamber 1 and the micro-explosion chamber 2 can be used as independent equipment on the experimental operation table according to different experimental environments, and the application method is flexible. The combustion chamber 1 and the micro-explosion chamber 2 are detachably arranged, the equipment is easy to disassemble and install, and has strong adaptability.
[0030] Please refer to Figure 1 In some embodiments, in order to better improve the safety performance of the fume hood system for combustion micro-explosion experiments, the micro-explosion chamber 2 is provided with a pressure relief port 22 connected to the air duct 3 .
[0031] Please refer to Figure 1 In some embodiments, in order to better improve the safety performance of the fume hood system for combustion micro-explosion experiments, the third air outlet 21 of the micro-explosion chamber 2 connected to the air duct 3 is arranged on the side of the micro-explosion chamber 2 close to the back of the fume hood body 7. Specifically, the back of the fume hood in this application refers to the side away from the operating position of the experimenter when the fume hood is used for the experiment, and such a setting can better protect the safety of the experimenter.
[0032] Please refer to Figure 1 In some embodiments, in order to better improve the safety performance of the fume hood system for combustion micro-explosion experiments, a pressure relief movable cover 23 for closing the pressure relief port 22 is provided at the pressure relief port 22, and the pressure relief movable cover 23 is fixed to the pressure relief port 22 by a hinge connection. In this embodiment, when the pressure in the micro-explosion chamber 2 is not enough to open the pressure relief movable cover 23, the gas in the micro-explosion chamber 2 is discharged through the third air port 21 connected to the air duct 3, so as to better protect the safety of the experimenters.
[0033] Please refer to Figure 1 In some embodiments, the hinge connection is located on the side of the pressure relief port close to the air duct, ensuring that the airflow flows to the inside of the fume hood to protect the safety of the operator.
[0034] Specifically, the working principle of the combustion micro-explosion experiment fume hood system is described as follows: when the combustion chamber 1 is performing a conventional combustion experiment, the combustion state pressure relief movable cover 23 is in a closed state, and its airflow direction is A→B→C→D. When the combustion chamber 1 is performing a micro-explosion experiment, the combustion state pressure relief movable cover 23 is in a pop-up state, and its airflow direction is A→B→C→D path and pressure relief A→B2→C→D path. At the same time, the intelligent control device 6 detects that the pressure relief movable cover 23 is in a pop-up state, controls the start of emergency exhaust, increases the exhaust volume, and accelerates the discharge of a large amount of gas generated by the micro-explosion.
[0035] Please refer to Figure 1In some embodiments, in order to better improve the safety performance of the fume hood system for combustion micro-explosion experiments, the air duct 3 is arranged on the back of the fume hood body 7. In this embodiment, the air duct is arranged away from the experimenter, which can prevent the gas generated by the experiment from contacting the experimenter, and prevent the experimenter from being injured during the experiment, thereby improving the safety performance of the fume hood system for combustion micro-explosion experiments.
[0036] In some embodiments, in order to protect the equipment in contact with the combustion chamber 1 from being scratched and to increase the service life of the equipment, the bottom of the combustion chamber 1 is made of a flame-retardant soft bottom material.
[0037] Please refer to Figure 2 and Figure 3 In some embodiments, flame retardant curtains 13 are provided on both sides of the combustion chamber 1. In order to facilitate the experimenter to pass his hands through the flame retardant curtains 13 during the operation, the flame retardant curtains 13 include a plurality of flame retardant strips 132 arranged in parallel, and the flame retardant strips 132 are made of soft material.
[0038] Please refer to Figure 2 and Figure 3 In some embodiments, the flame retardant curtain 13 further includes curtain rods 131 disposed at both ends of the flame retardant strip 132, and the flame retardant strip 132 is disposed perpendicularly to the curtain rod 131. A curtain groove for arranging the curtain rod 131 is disposed at the top of the combustion chamber 1.
[0039] In some embodiments, in order to facilitate observation of experiments and improve safety performance, both the combustion chamber 1 and the micro-explosion chamber 2 are provided with observation windows equipped with explosion-proof glass.
[0040] Please refer to Figure 4 In some embodiments, the fume hood body 7 includes an upper box 4 for carrying experimental equipment, a lower box for providing water, electricity and gas interfaces, and an intelligent control device 6 located between the upper box 4 and the lower box. Specifically, in the fume hood system for combustion and micro-explosion experiments, the fume hood is the main carrier of the entire system. The fume hood provides accommodation space for the combustion chamber 1 and the micro-explosion chamber 2, provides an installation location for the control system and safety devices, and provides a fixed position for water, gas, and circuit wiring. The fume hood has a variety of exterior styles, and its functions are basically the same. According to the box structure, it can be divided into an upper box 4 and a lower box. The upper box 4 mainly carries experimental operating equipment, and the lower box mainly assists in providing water, electricity, and gas interfaces and temporary storage of temporary items.
[0041] Please refer to Figure 1 In some embodiments, a fume hood window is also provided on the front of the fume hood body 7. When a combustion experiment is performed, the fume hood window is manually lowered to a shielding state, leaving only the height for the experimental operation, thereby playing a protective role.
[0042] The structure and principle of the fume hood system for combustion micro-explosion experiments in this application are described in detail below with a specific embodiment.
[0043] The specific structure of the combustion chamber is introduced below:
[0044] The combustion chamber is a space used to operate combustion experiments, which includes:
[0045] The base is placed on the experimental table. The base is used to support the combustion chamber. In order to protect the equipment in contact with the base from being scratched, the bottom of the base should be made of flame-retardant soft bottom material.
[0046] The operation windows are respectively arranged on both sides of the combustion chamber, and the operation windows can facilitate the experimenter to extend his hands into the combustion chamber from both sides of the combustion chamber, providing convenience for the experimenter to operate the experiment. A flame retardant curtain 13 is arranged on the operation window. In order to facilitate the experimenter to pass his hands through the flame retardant curtain 13 to perform the experiment during the operation, the flame retardant curtain 13 includes a plurality of flame retardant strips 132 arranged in parallel, and the flame retardant strips 132 are made of soft material.
[0047] In the combustion chamber of this embodiment, the combustion chamber includes a first air port and a second air port, and the second air port is arranged at the rear side of the combustion chamber for airflow to enter or discharge during the experimental operation. The first air port is arranged at the upper part of the combustion chamber and communicated with the micro-explosion chamber, and is used for the airflow to be discharged upward to the micro-explosion chamber during the experimental operation.
[0048] The observation window is arranged in front of the combustion chamber, opposite to the first air outlet, for the experimenter to operate the experiment through the observation window. The inside of the observation window is provided with explosion-proof glass for forming a safety protection barrier. The experiment is operated through the explosion-proof glass of the observation window, which is safer and improves the safety performance of the equipment.
[0049] In addition, the combustion chamber in this embodiment is also provided with a latch hole, and similarly, the micro-explosion chamber is also provided with a latch hole corresponding to the latch hole on the combustion chamber. The micro-explosion chamber and the combustion chamber are fixed by the latch in the latch hole.
[0050] During the combustion micro-explosion experiment, when a small-scale explosion occurs in the combustion chamber 1, the micro-explosion chamber 2 can collect the fireball and reduce the explosion pressure, fully preventing the hazards caused by the combustion micro-explosion experiment, and effectively solving the safety hazards of traditional fume hoods in the combustion micro-explosion experiment.
[0051] The specific structure of the micro-explosion chamber is introduced below:
[0052] The micro-explosion chamber 2 is a space for buffering and reducing the pressure generated during micro-explosion. The micro-explosion chamber includes:
[0053] The exhaust port includes a first exhaust port, a third exhaust port and a pressure relief port. The first exhaust port is arranged below the micro-explosion chamber, and is communicated with the combustion chamber through the first exhaust port of the combustion chamber. The third exhaust port is arranged behind the micro-explosion chamber, and is communicated with the air duct, and the air flow can be discharged and outflowed through the third exhaust port. It should be noted that since an exhaust port is also arranged below the micro-explosion chamber at a position corresponding to the first exhaust port of the combustion chamber, for the sake of convenience, the exhaust port below the micro-explosion chamber at a position corresponding to the first exhaust port of the combustion chamber is also referred to as the first exhaust port in this application. When the two are assembled together for use, the two exhaust ports are merged into one exhaust port. In this application, the merged exhaust port is also referred to as the first exhaust port.
[0054] The pressure relief cover is arranged on the pressure relief port, and the pressure relief cover includes a pressure relief fixed cover and a pressure relief movable cover hingedly connected to the pressure relief fixed cover. The hinge connection is located on the side of the pressure relief port close to the air duct, ensuring that the airflow flows to the inside of the fume hood. When a micro-explosion occurs in the combustion experiment, the pressure relief movable cover is opened by the pressure, while the pressure relief fixed cover is fixed, ensuring that the airflow flows to the inside of the fume hood to protect the safety of the operator.
[0055] In combination with the combustion chamber and the micro-explosion chamber, the working principle of the fume hood system for combustion micro-explosion experiments is specifically described: when the combustion chamber 1 is performing a conventional combustion experiment, the combustion state pressure relief movable cover 23 is in a closed state, and its airflow direction is A→B→C→D. When the combustion chamber 1 is performing a micro-explosion experiment, the combustion state pressure relief movable cover 23 is in a pop-up state, and its airflow direction is A→B→C→D path and pressure relief A→B2→C→D path. At the same time, the intelligent control device 6 detects that the pressure relief movable cover 23 is in a pop-up state, controls the start of emergency exhaust, increases the exhaust volume, and accelerates the discharge of a large amount of gas generated by the micro-explosion.
[0056] In this embodiment, by setting the micro-explosion chamber 2 to be connected with the combustion chamber 1, when a small-scale deflagration occurs in the combustion chamber 1 during a combustion micro-explosion experiment, the micro-explosion chamber 2 can collect fireballs and reduce the deflagration pressure, thereby protecting the safety of various combustion micro-explosion experiment operation processes and the safety of splashing experiment operation processes, fully preventing the hazards caused during the combustion micro-explosion experiment, and effectively solving the safety hazards of traditional fume hoods in combustion micro-explosion experiments.
[0057] In this embodiment, the safety of the experiment is improved by designing the air duct, the pressure relief movable cover 23 and the exhaust port etc. away from the experimenters.
[0058] In this embodiment, the micro-explosion chamber, the combustion chamber and the fume hood are detachably arranged, so that the combustion micro-explosion device can be used as an independent device on the experimental operating table according to different experimental environments, and the application method is flexible.
[0059] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A fume hood system for combustion micro-explosion experiment, characterized in that: The invention comprises a fume hood body, wherein the fume hood body is provided with an air duct for ventilation, a combustion chamber for operating a combustion experiment and a micro-explosion chamber for pressure relief; the combustion chamber is connected with the micro-explosion chamber through a first air port; the air duct is connected with the combustion chamber through a second air port; the air duct is connected with the micro-explosion chamber through a third air port.
2. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: The micro-explosion chamber is provided with a pressure relief port communicated with the air duct.
3. The fume hood system for combustion micro-explosion experiment as claimed in claim 2, characterized in that: The third air outlet of the micro-explosion chamber connected to the air duct is arranged in the micro-explosion chamber close to the inner side of the fume hood.
4. The fume hood system for combustion micro-explosion experiment as claimed in claim 3, characterized in that: The pressure relief port is provided with a movable pressure relief cover for closing the pressure relief port, and the movable pressure relief cover is fixed to the pressure relief port via a hinge connection; the hinge connection is located at a side of the pressure relief port close to the air duct.
5. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: The air duct is arranged inside the fume hood.
6. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: The bottom of the combustion chamber is made of flame-retardant soft bottom material.
7. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: Flame-retardant curtains are arranged on both sides of the combustion chamber; the flame-retardant curtains include a plurality of flame-retardant strips arranged in parallel, and the flame-retardant strips are made of soft material.
8. The fume hood system for combustion micro-explosion experiment as claimed in claim 7, characterized in that: The flame retardant curtain also includes curtain rods arranged at both ends of the flame retardant strip, and the flame retardant strip is arranged vertically to the curtain rod; a curtain groove for arranging the curtain rod is arranged on the top of the combustion chamber.
9. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: The combustion chamber and the micro-explosion chamber are both provided with observation windows equipped with explosion-proof glass.
10. The fume hood system for combustion micro-explosion experiment according to claim 1, characterized in that: The combustion chamber and the micro-explosion chamber are detachably arranged in the fume hood.