An explosion smoke sampling and collection device and its working method

Abstract

An explosion smoke sampling and collection device and its operating method are disclosed, comprising an explosion-proof canister, a sampling unit, a liquid inlet spraying unit, and a circulation collection unit. The explosion-proof canister has a top-opening structure with four terminals on the inside of the canister lid for suspending and detonating sample bombs. A telescopic spray head is located at the top of the canister lid, connected to the spraying and circulation units via pipelines. A replaceable filter plate and filter screen are located in the lower part of the canister to isolate explosion fragments and debris, preventing pipeline blockage. The vacuum pump of the sampling unit extracts samples of the products after the explosion; the liquid inlet spraying unit's pump injects stored organic solvent into the canister through pipelines connected to the canister lid and the spray head; the circulation unit circulates and rinses the injected organic solvent within the canister, fully collecting the smoke components before discharging the solvent into a collection container. This invention provides an explosion smoke sampling and collection device and its operating method, enabling partial sampling of explosion smoke and complete collection of organic components for subsequent qualitative and quantitative analysis. This invention can be used to determine the utilization rate of the loaded agent, evaluate the explosive performance, analyze the content of toxic and harmful components, and quantitatively evaluate the impact on the environment.

Description

Technical Field

[0001] This invention relates to the field of explosion testing and analysis technology, and in particular to an explosion smoke sampling and collection device and its working method. Background Technology

[0002] Analyzing and studying explosion products is crucial for improving weapon performance. However, due to the instantaneous and destructive nature of explosions, it is difficult to collect and analyze the various products formed, especially for special munitions such as tear gas and smoke grenades, which create smoke clouds that rapidly disperse into the air. Currently, only partial sampling can be used to collect these products, making comprehensive analysis and evaluation challenging. Therefore, the structure of smoke sampling and collection devices plays a key role in the analysis of explosion products. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an explosion smoke sampling and collection device and working method, which can realize partial sampling and complete collection of explosion smoke for subsequent qualitative and quantitative analysis.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: an explosion smoke sampling and collection device, comprising an explosion-proof canister, the explosion-proof canister and the canister cover being locked together by a flange ring, a locking ring and a sealing ring, and a two-stage filtration system provided inside the explosion-proof canister; a solvent storage container, a liquid pump, a liquid inlet pipeline, a first solenoid valve and a spray pipeline, and a spray head forming a liquid inlet unit; a collection container, a liquid outlet pipeline, a second solenoid valve, a circulation pump, a circulation pipeline and a spray pipeline, and a spray head forming a circulation collection unit; and a first vacuum pump, a nitrogen cylinder, an atmospheric sampler, a third solenoid valve and a fourth solenoid valve forming a sampling unit.

[0005] Preferably, the inner side of the canister lid is provided with four terminals. The upper end of the attitude adjustment line is fixedly connected to two terminals on the canister lid, and the lower end is used to suspend the sample projectile. The inner ends of the other two terminals are connected to the sample projectile through wires, and the outer ends are connected to the detonation device.

[0006] Preferably, the tank cover has a liquid inlet hole, and the spray pipe is connected to the spray head through the liquid inlet hole; the tank cover also has a sampling hole, which is connected to the sampling pipe.

[0007] Preferably, the sampling pipeline is connected to the first vacuum pump and the nitrogen cylinder respectively via a tee, and a third solenoid valve and a fourth solenoid valve are respectively provided between the first vacuum pump and the nitrogen cylinder and the tee, and the first vacuum pump is connected to the atmospheric sampler.

[0008] Preferably, the solvent storage container of the liquid inlet unit is connected to the liquid inlet pipeline, and the liquid inlet pipeline is equipped with a liquid pump and a first solenoid valve.

[0009] Preferably, the circulation pipeline is provided with a filter, a fifth solenoid valve and a circulation pump in sequence; the spray pipeline is connected to the circulation pipeline and the inlet pipeline through a tee, and the circulation pipeline is connected to the outlet pipeline.

[0010] Preferably, the liquid outlet pipeline is connected to the drain port at the bottom of the explosion-proof tank, and a second solenoid valve is provided on the liquid outlet pipeline, which is connected to the collection container.

[0011] Preferably, a filter plate is provided below the sample bullet inside the explosion-proof container; and a filter screen is provided below the filter plate at the bottom of the explosion-proof container.

[0012] Preferably, the filter plate is placed on the support lug; the filter screen is a replaceable metal filter screen, which is fixedly laid at the bottom of the explosion-proof tank.

[0013] Preferably, the explosion-proof tank is provided with an observation window and a pressure gauge on its side wall.

[0014] Preferably, the explosion-proof tank is fixedly mounted on a base, and the base is fixed to the ground.

[0015] The working method of an explosion smoke sampling and collection device is as follows: S01. Open the can lid and connect the sample bomb to the terminal on the can lid with a wire. Use a multimeter to check the continuity of the circuit and adjust the attitude of the sample bomb by suspending it with the attitude adjustment line. S02. Close the canister lid, open the third solenoid valve of the sampling unit, turn on the first vacuum pump to extract the gas in the canister, then turn off the first vacuum pump, open the fourth solenoid valve, and turn on the nitrogen cylinder to perform gas replacement. S03. With all valves closed, ignition and detonation occur, and explosion products are deposited. S04. Open the first solenoid valve, start the liquid pump, inject the solvent in the solvent storage container into the tank, and spray to wash away the explosion products. S05. Close the first solenoid valve and the liquid pump, open the fifth solenoid valve, start the circulation pump, and circulate the solvent filtered through the filter plate and filter screen several times; close the circulation pump, open the second solenoid valve, start the second vacuum pump, discharge the solvent into the collection container, close the second solenoid valve and the second vacuum pump, and complete one cycle. S06. After repeating S04 and S05 several times, drain the residual solvent from the pipeline. S07. Open the can lid, remove the filter screen, and clean the inside of the can.

[0016] This invention provides an explosion smoke sampling and collection device and its operating method. This invention enables quantitative sampling and complete collection of explosion smoke for subsequent qualitative and quantitative analysis of smoke components. This invention can be used to determine the utilization rate of ammunition loading agents, evaluate ammunition performance, analyze the content of toxic and harmful gases, and quantitatively assess the environmental impact. Furthermore, this invention can be used to sample and collect the smoke components after the explosion and combustion of fireworks and firecrackers to evaluate their environmental pollution. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after the base is installed. Detailed Implementation

[0018] like Figure 1 As shown, an explosion smoke sampling and collection device includes an explosion-proof tank 1, which is locked to a tank cover 2 by a flange ring, a locking ring, and a sealing ring. The explosion-proof tank 1 is equipped with a two-stage filtration system. A solvent storage container 13, a liquid pump 15, an inlet pipe 12, a first solenoid valve 16-1, a spray pipe 8, and a spray head 7 form an inlet unit. A collection container 10, an outlet pipe 9, a second solenoid valve 16-2, a circulation pump 14, a circulation pipe 11, a spray pipe 8, and a spray head 7 form a circulation collection unit. A first vacuum pump 21, a nitrogen cylinder 28, an atmospheric sampler 22, a third solenoid valve 16-3, and a fourth solenoid valve 16-4 form a sampling unit. The spray head 7 is an explosion-proof type that meets explosion-proof standards.

[0019] Preferably, the inner side of the canister lid 2 is provided with four terminals 5. The upper end of the attitude adjustment line 3 is fixedly connected to two terminals 5 on the canister lid 2, and the lower end is used to suspend the sample projectile 4. The inner ends of the other two terminals 5 are connected to the sample projectile 4 through wires 6, and the outer ends are connected to the detonation device.

[0020] Preferably, the tank cover 2 has a liquid inlet hole, and the spray pipe 8 is connected to the spray head 7 through the liquid inlet hole; the tank cover 2 also has a sampling hole, which is connected to the sampling pipe 26.

[0021] Preferably, the sampling pipeline 26 is connected to the first vacuum pump 21 and the nitrogen cylinder 28 via a tee, and a third solenoid valve 16-3 and a fourth solenoid valve 16-4 are respectively provided between the first vacuum pump 21 and the nitrogen cylinder 28 and the tee. The first vacuum pump 21 is connected to the atmospheric sampler 22.

[0022] Preferably, the solvent storage container 13 of the liquid inlet unit is connected to the liquid inlet pipeline 12, and the liquid inlet pipeline 12 is equipped with a liquid pump 15 and a first solenoid valve 16-1.

[0023] Preferably, the circulation pipeline 11 is provided with a filter 27, a fifth solenoid valve 16-5 and a circulation pump 14 in sequence; the spray pipeline 8 is connected to the circulation pipeline 11 and the liquid inlet pipeline 12 through a tee, and the circulation pipeline 11 is connected to the liquid outlet pipeline 9.

[0024] Preferably, the liquid outlet pipe 9 is connected to the drain port at the bottom of the explosion-proof tank 1, and the liquid outlet pipe 9 is equipped with a second solenoid valve 16-2, which is connected to the collection container 10.

[0025] Preferably, a filter plate 18 is provided below the sample bomb 4 inside the explosion-proof container 1; and a filter screen 19 is provided below the filter plate 18 at the bottom of the explosion-proof container 1. The filter plate and filter screen are used to filter shell fragments and solid residues after the explosion.

[0026] Preferably, the filter plate 18 is placed on the lug 20; the filter screen 19 is a replaceable metal filter screen, which is fixedly laid at the bottom inside the explosion-proof tank 1.

[0027] Preferably, the explosion-proof tank 1 is provided with an observation window 23 and a pressure gauge 24 on its side wall.

[0028] Preferred, such as Figure 2 As shown, the explosion-proof tank 1 is fixedly mounted on the base 25, and the base 25 is fixed to the ground.

[0029] The working method of an explosion smoke sampling and collection device is as follows: S01. Open the can lid 2 and connect the sample bullet to the terminal 5 on the can lid with a wire. Check the continuity of the circuit with a multimeter and adjust the attitude of the sample bullet by suspending it through the attitude adjustment line 3. S02. Close the canister lid 2, open the third solenoid valve 16-3 of the sampling unit, turn on the first vacuum pump 21 to extract the gas in the canister, then turn off the first vacuum pump 21, open the fourth solenoid valve 16-4, and turn on the nitrogen cylinder 28 to perform gas replacement. S03. With all valves closed, ignition and detonation occur, and explosion products are deposited. S04. Open the first solenoid valve 16-1 and start the liquid pump 15 to inject the solvent in the solvent storage container 13 into the tank and spray to wash away the explosion products. S05. Close solenoid valve 16-1 and liquid pump 15, open fifth solenoid valve 16-5, start circulation pump 14, and circulate the solvent filtered through filter plate 18 and filter screen 19 several times; close circulation pump 14, open second solenoid valve 16-2, start second vacuum pump 17, discharge solvent into collection container 10, close second solenoid valve 16-2 and second vacuum pump 17, and complete one cycle; S06. After repeating S04 and S05 several times, drain the residual solvent from the pipeline. S07. Open the can lid, remove the filter screen, and clean the inside of the can.

[0030] Collection of explosion smoke: After the sample bomb is detonated, liquid injection and circulating spraying are achieved through the liquid pump 15 and the circulation pump 14. The liquid pump 15 is started to spray the solvent in the solvent storage container 13 into the container through the spray nozzle. After the liquid pump works for a period of time (the time can be set), it stops automatically. The circulation pump 14 is started to spray the solvent in the bottom of the tank into the tank through the circulation pipeline 11, the liquid injection pipeline 8 and the spray head to continuously absorb the smoke. After circulating and extracting for a certain period of time, it stops and the absorbed solvent is discharged into the collection container 10. At this time, one cycle is completed. The above steps can be repeated multiple times to ensure complete smoke collection.

[0031] Sampling of explosion smoke: After the sample bomb is detonated, the solenoid valve on the sampling pipeline 26 is opened, the sampling time is set, the vacuum pump is turned on, and the explosion smoke is extracted through the collection tube 26 to the atmospheric sampler to complete the sampling.

[0032] This device is used in the field of explosive performance analysis and testing technology.

[0033] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An explosion smoke sampling and collection device, characterized in that: The explosion-proof tank (1) is locked to the tank cover (2) by a flange ring, a locking ring and a sealing ring. The explosion-proof tank (1) is equipped with a two-stage filtration system. The solvent storage container (13), the liquid pump (15), the liquid inlet pipe (12), the first solenoid valve (16-1), the spray pipe (8) and the spray head (7) form the liquid inlet unit. The collection container (10), the liquid outlet pipe (9), the second solenoid valve (16-2), the circulation pump (14), the circulation pipe (11), the spray pipe (8) and the spray head (7) form the circulation collection unit. The first vacuum pump (21), the nitrogen cylinder (28), the atmospheric sampler (22), the third solenoid valve (16-3) and the fourth solenoid valve (16-4) form the sampling unit. The inner side of the can lid (2) is provided with 4 terminals (5). The upper end of the attitude adjustment line (3) is fixedly connected to two terminals (5) on the can lid (2), and the lower end is used to suspend the sample projectile (4). The inner ends of the other two terminals (5) are connected to the sample projectile (4) through wires (6), and the outer ends are connected to the detonation device. The circulation pipeline (11) is provided with a filter (27), a fifth solenoid valve (16-5) and a circulation pump (14) in sequence; the spray pipeline (8) is connected to the circulation pipeline (11) and the liquid inlet pipeline (12) through a tee, and the circulation pipeline (11) is connected to the liquid outlet pipeline (9). Inside the explosion-proof tank (1), a filter plate (18) is provided below the sample bullet (4); at the bottom of the explosion-proof tank (1), a filter screen (19) is provided below the filter plate (18). The working method of the explosion smoke sampling and collection device is as follows: S01. Open the can lid (2), connect the sample bullet to the terminal (5) on the can lid with a wire, check the continuity of the circuit with a multimeter, and adjust the attitude of the sample bullet by suspending it through the attitude adjustment line (3). S02. Close the canister lid (2), open the third solenoid valve (16-3) of the sampling unit, turn on the first vacuum pump (21) to extract the gas in the canister, then turn off the first vacuum pump (21), open the fourth solenoid valve (16-4), and turn on the nitrogen cylinder (28) to perform gas replacement. S03. With all valves closed, ignition and detonation occur, and explosion products are deposited. S04. Open the first solenoid valve (16-1), start the liquid pump (15), inject the solvent in the solvent storage container (13) into the tank, and spray and rinse the explosion products formed. S05. Close the first solenoid valve (16-1) and the liquid pump (15), open the fifth solenoid valve (16-5), start the circulation pump (14), and circulate the solvent filtered through the filter plate (18) and filter screen (19) several times; close the circulation pump (14), open the second solenoid valve (16-2), start the second vacuum pump (17), discharge the solvent into the collection container (10), close the second solenoid valve (16-2) and the second vacuum pump (17), and complete one cycle; S06. After repeating S04 and S05 several times, drain the residual solvent from the pipeline. S07. Open the can lid, remove the filter screen, and clean the inside of the can.

2. The explosion smoke sampling and collection device according to claim 1, characterized in that: The can lid (2) has a liquid inlet hole, and the spray pipe (8) is connected to the spray head (7) through the liquid inlet hole; the can lid (2) also has a sampling hole, which is connected to the sampling pipe (26).

3. The explosion smoke sampling and collection device according to claim 2, characterized in that: The sampling pipeline (26) is connected to the first vacuum pump (21) and the nitrogen cylinder (28) respectively via a tee. A third solenoid valve (16-3) and a fourth solenoid valve (16-4) are respectively provided between the first vacuum pump (21) and the nitrogen cylinder (28) and the tee. The first vacuum pump (21) is connected to the atmospheric sampler (22).

4. The explosion smoke sampling and collection device according to claim 1 or 2, characterized in that: The solvent storage container (13) of the liquid inlet unit is connected to the liquid inlet pipeline (12), and the liquid inlet pipeline (12) is equipped with a liquid pump (15) and a first solenoid valve (16-1).

5. The explosion smoke sampling and collection device according to claim 1, characterized in that: The liquid outlet pipe (9) is connected to the drain port at the bottom of the explosion-proof tank (1), and a second solenoid valve (16-2) is provided on the liquid outlet pipe (9) and connected to the collection container (10).

6. The explosion smoke sampling and collection device according to claim 1, characterized in that: The filter plate (18) is placed on the lug (20); the filter screen (19) is a replaceable metal filter screen, which is fixedly laid at the bottom inside the explosion-proof tank (1).

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