Explosion heat bomb gas replacement system

Abstract

The utility model relates to the technical field of explosive explosion heat testing, and particularly discloses an explosion heat bomb gas replacement system which comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a pressure sensor, a nitrogen cylinder, an exhaust valve, a vacuum pump and a controller. The air outlet end of the second solenoid valve is connected with the vacuum pump through a pipeline. According to the utility model, the ultraviolet light catalytic reactor and the titanium dioxide photocatalyst are utilized to decompose combustible gas or harmful impurities; a filter is used for filtering gas exhausted from the explosion heat bomb, solid particles on the gas are intercepted, after gas replacement is finished, a sixth electromagnetic valve and a fifth electromagnetic valve are opened, a gas adding pump and a gas extracting pump are started at the same time, gas generated by the gas adding pump blows up the solid particles attached to the top and the bottom of a filter plate, and the solid particles on the gas are removed. And blown solid particles are sucked away by using the sucking pump, so that the cleanliness of the interior of the filter is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosive heat testing technology, specifically to a gas replacement system for explosive heat bombs. Background Technology

[0002] Heat release refers to the heat released when an explosive detonates under constant volume conditions. It is a core indicator for evaluating the energy release of explosives and directly affects the explosive power and destructive effect. Its unit is kJ / kg or kJ / mol, and it needs to be quantitatively determined by standard testing methods.

[0003] Before conducting a deflagration test on an explosive, the gas inside the deflagration bomb's cavity needs to be replaced to ensure that the gas composition meets the test requirements. Currently, during gas replacement in deflagration bombs, some flammable gases are present in the replaced gas, which may cause a fire after being discharged. Furthermore, the replaced gas may contain solid particles, which can easily lead to blockage of the gas replacement system over time. Therefore, to solve these problems, we have proposed a gas replacement system for deflagration bombs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gas replacement system for explosive heat bombs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The gas replacement system for a thermal explosion bomb includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a pressure sensor, a nitrogen cylinder, an exhaust valve, a vacuum pump, and a controller. The inlet of the first solenoid valve is connected to the nitrogen cylinder via a pipe; the outlet of the second solenoid valve is connected to the vacuum pump via a pipe; and the outlet of the third solenoid valve is connected to the exhaust valve via a pipe. The outlets of the first, second, and third solenoid valves are all connected to an integrated block via pipes. The detection end of the pressure sensor is connected to the integrated block. The outlet of the exhaust valve is connected to an ultraviolet photocatalyst via a pipe. The reactor has an integrated block whose inlet end is connected to a fourth solenoid valve via a pipe. The inlet end of the fourth solenoid valve is connected to a filter via a pipe. A filter plate is installed at the center of the inner wall of the filter. An air blowing ring is connected to the outside of the filter and to the top and bottom of the filter plate. The inlet end of the air blowing ring is connected to a fifth solenoid valve via a pipe. The inlet end of the fifth solenoid valve is connected to an air pump via a pipe. An air suction ring is connected to the top and bottom of the outside of the filter. The inlet end of the air suction ring is connected to a sixth solenoid valve via a pipe. The outlet end of the sixth solenoid valve is connected to a vacuum pump via a pipe.

[0007] Preferably, the first, second, third, fourth, fifth, and sixth solenoid valves are all one-way solenoid valves.

[0008] Preferably, the output terminal of the controller is electrically connected to the input terminals of the first solenoid valve, the second solenoid valve, the third solenoid valve, the vacuum pump, the ultraviolet photocatalytic reactor, the fourth solenoid valve, the vacuum pump, the fifth solenoid valve, the gas pump, and the sixth solenoid valve, respectively. The outlet terminal of the vacuum pump is connected to the external air filtration system, and the input terminal of the controller is electrically connected to the output terminal of the pressure sensor.

[0009] Preferably, the air inlet end of the filter is connected to a quick connector via a pipe, and the other end of the quick connector is connected to a thermal explosive via a pipe.

[0010] Preferably, the output terminal of the controller is electrically connected to a water-cooled radiator, which is installed on the ultraviolet photocatalytic reactor. The inner wall of the pipe between the ultraviolet photocatalytic reactor and the exhaust valve, as well as the interior of the ultraviolet photocatalytic reactor, are coated with titanium dioxide photocatalyst.

[0011] Preferably, the other outlet of the nitrogen cylinder is connected to a seventh solenoid valve via a pipe. The outlet of the seventh solenoid valve is connected to the pipe between the filter and the quick connector via a pipe. The seventh solenoid valve is also a one-way solenoid valve. The input of the seventh solenoid valve is electrically connected to the output of the controller.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a combination of an ultraviolet photocatalytic reactor, a filter, a fourth solenoid valve, a fifth solenoid valve, a gas supply pump, a vacuum pump, a sixth solenoid valve, and a seventh solenoid valve. It employs the ultraviolet photocatalytic reactor and titanium dioxide photocatalyst to decompose combustible gases or harmful impurities. The filter removes solid particles from the gas emitted from the explosive bomb. After gas replacement, the sixth and fifth solenoid valves are opened, simultaneously activating the gas supply pump and the vacuum pump. The gas generated by the gas supply pump blows up the solid particles attached to the top and bottom of the filter plate, which are then sucked away by the vacuum pump, improving the cleanliness of the filter's interior. During the next vacuum pump operation, the seventh solenoid valve is opened, allowing nitrogen from the nitrogen cylinder to flow into the filter through a pipeline. The incoming nitrogen pushes out residual gas from the filter and integrated block, further improving the cleanliness of these components. Attached Figure Description

[0014] Figure 1 This is a block diagram of the system structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the filter structure of this utility model;

[0016] Figure 3 This is a schematic diagram showing the structural combination of the ultraviolet photocatalytic reactor and the water-cooled heat sink of this utility model.

[0017] In the diagram: 1. First solenoid valve; 2. Second solenoid valve; 3. Third solenoid valve; 4. Pressure sensor; 5. Nitrogen cylinder; 6. Vacuum pump; 7. Exhaust valve; 8. Controller; 9. Integrated circuit; 10. Quick connector; 11. Explosive bomb; 12. Ultraviolet photocatalytic reactor; 13. Water-cooled radiator; 14. Filter; 15. Fourth solenoid valve; 16. Fifth solenoid valve; 17. Gas pump; 18. Vacuum pump; 19. Sixth solenoid valve; 20. Seventh solenoid valve; 21. Filter plate; 22. Suction ring; 23. Blowing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-3 The explosive gas replacement system includes a first solenoid valve 1, a second solenoid valve 2, a third solenoid valve 3, a pressure sensor 4, a nitrogen cylinder 5, an exhaust valve 7, a vacuum pump 6, and a controller 8. The inlet of the first solenoid valve 1 is connected to the nitrogen cylinder 5 via a pipe. The outlet of the second solenoid valve 2 is connected to the vacuum pump 6 via a pipe. The outlet of the third solenoid valve 3 is connected to the exhaust valve 7 via a pipe. The outlets of the first solenoid valve 1, the inlet of the second solenoid valve 2, and the inlet of the third solenoid valve 3 are all connected to an integrated block 9 via pipes. The detection end of the pressure sensor 4 is connected to the integrated block 9. The outlet of the exhaust valve 7 is connected to an ultraviolet photocatalytic reactor 12 via a pipe. The air inlet of component 9 is connected to a fourth solenoid valve 15 via a pipe. The air inlet of the fourth solenoid valve 15 is connected to a filter 14 via a pipe. A filter plate 21 is installed at the center of the inner wall of the filter 14. An air blowing ring 23 is connected to the outside of the filter 14, at the top and bottom of the filter plate 21. The air inlet of the air blowing ring 23 is connected to a fifth solenoid valve 16 via a pipe. The air inlet of the fifth solenoid valve 16 is connected to an air pump 17 via a pipe. An air suction ring 22 is connected to the top and bottom of the outside of the filter 14. The air inlet of the air suction ring 22 is connected to a sixth solenoid valve 19 via a pipe. The air outlet of the sixth solenoid valve 19 is connected to a vacuum pump 18 via a pipe. Integrated component 9 is a non-standard component and is designed according to specific requirements.

[0020] As a technical optimization of this utility model, the first solenoid valve 1, the second solenoid valve 2, the third solenoid valve 3, the fourth solenoid valve 15, the fifth solenoid valve 16 and the sixth solenoid valve 19 are all one-way solenoid valves.

[0021] As a technical optimization of this utility model, the output terminal of the controller 8 is electrically connected to the input terminals of the first solenoid valve 1, the second solenoid valve 2, the third solenoid valve 3, the vacuum pump 6, the ultraviolet photocatalytic reactor 12, the fourth solenoid valve 15, the vacuum pump 18, the fifth solenoid valve 16, the air pump 17, and the sixth solenoid valve 19, respectively. The outlet terminal of the vacuum pump 18 is connected to the external air filtration system, and the input terminal of the controller 8 is electrically connected to the output terminal of the pressure sensor 4.

[0022] As a technical optimization of this utility model, the air inlet end of the filter 14 is connected to a quick connector 10 through a pipe, and the other end of the quick connector 10 is connected to a thermal explosive 11 through a pipe.

[0023] As a technical optimization of this utility model, the output terminal of the controller 8 is electrically connected to a water-cooled radiator 13, which is installed on the ultraviolet photocatalytic reactor 12. The inner wall of the pipe between the ultraviolet photocatalytic reactor 12 and the exhaust valve 7, as well as the interior of the ultraviolet photocatalytic reactor 12, are coated with titanium dioxide photocatalyst. The controller 8 is a PLC.

[0024] As a technical optimization of this utility model, the other outlet of the nitrogen cylinder 5 is connected to a seventh solenoid valve 20 through a pipe. The outlet of the seventh solenoid valve 20 is connected to the pipe between the filter 14 and the quick connector 10 through a pipe. The seventh solenoid valve 20 is also a one-way solenoid valve. The input end of the seventh solenoid valve 20 is electrically connected to the output end of the controller 8.

[0025] In use, the quick connector 10 is first connected to the explosive bomb 11. Then, the vacuum threshold is set to -0.095 MPa, the nitrogen pressure threshold to 1.5 MPa, and the gas replacement number threshold to 3. It should be noted that the gas replacement number threshold should be greater than or equal to 3. The controller 8 controls the second solenoid valve 2 to open and the vacuum pump 6 to start evacuating. When the vacuum reaches the preset vacuum threshold of -0.095 MPa, the controller 8 controls the second solenoid valve 2 to close and the vacuum pump 6 to stop evacuating. The controller 8 opens the first solenoid valve 1, and the nitrogen cylinder 5 begins to fill with nitrogen. When the atmospheric pressure inside the explosive bomb 11 connected to the integrated block 9 reaches the nitrogen pressure threshold of 1.5 MPa, the first solenoid valve 1 is closed, and the nitrogen cylinder 5 stops filling with nitrogen. The controller 8 opens the fourth solenoid valve 15 and the third solenoid valve 3, and the ultraviolet photocatalytic reactor 12 is put into operation. The exhaust valve 7 starts to discharge nitrogen. When the atmospheric pressure inside the explosive bomb 11 connected to the integrated block 9 is balanced with the external atmospheric pressure, the third solenoid valve 3 and the fourth solenoid valve 15 close, completing one gas replacement cycle.

[0026] The UV photocatalytic reactor 12 and titanium dioxide photocatalyst work together to decompose combustible gases (such as CH4, H2) or harmful impurities. After the third solenoid valve 3 is closed, the UV photocatalytic reactor 12 stops operating. The water-cooled radiator 13 is always running to cool the UV photocatalytic reactor 12 and prevent it from being in a high-temperature state for a long time, thus affecting its service life. The gas discharged from the explosive bomb 11 is filtered by the filter 14, which traps the solid particles on it. After the gas replacement is completed, the sixth solenoid valve 19 and the fifth solenoid valve 16 are opened, and the gas pump 17 and the vacuum pump 18 are turned on at the same time. The gas generated by the gas pump 17 blows up the solid particles attached to the top and bottom of the filter plate 21. The vacuum pump 18 sucks away the blown solid particles, improving the cleanliness of the filter 14 and facilitating the next filtration. After filtration, the sixth solenoid valve 19 and the fifth solenoid valve 16 are closed, and the gas pump 17 and the vacuum pump 18 stop operating.

[0027] When vacuum pump 6 performs vacuuming again, the seventh solenoid valve 20 and the fourth solenoid valve 15 are opened. Nitrogen gas from nitrogen cylinder 5 flows into filter 14 through the pipeline, using the incoming nitrogen gas to push out residual gas in filter 14 and integrated block 9, improving the cleanliness of the interior of filter 14 and integrated block 9. Then, the seventh solenoid valve 20 and the fourth solenoid valve 15 are closed, and vacuum pump 6 continues to run. When the vacuum level in integrated block 9 reaches the preset vacuum threshold of -0.095MPa, controller 8 controls the second solenoid valve 2 to close and controls vacuum pump 6 to stop vacuuming.

[0028] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A high explosive projectile gas replacement system comprising a first solenoid valve (1), a second solenoid valve (2), a third solenoid valve (3), a pressure sensor (4), a nitrogen cylinder (5), an exhaust valve (7), a vacuum pump (6) and a controller (8), characterised in that: The inlet of the first solenoid valve (1) is connected to the nitrogen cylinder (5) via a pipe; the outlet of the second solenoid valve (2) is connected to the vacuum pump (6) via a pipe; the outlet of the third solenoid valve (3) is connected to the exhaust valve (7) via a pipe; the outlet of the first solenoid valve (1), the inlet of the second solenoid valve (2), and the inlet of the third solenoid valve (3) are all connected to an integrated block (9) via pipes; the detection end of the pressure sensor (4) is connected to the integrated block (9); the outlet of the exhaust valve (7) is connected to the ultraviolet photocatalytic reactor (12) via a pipe; the inlet of the integrated block (9) is connected to the fourth solenoid valve (15) via a pipe; the fourth solenoid valve (15)... The air inlet is connected to a filter (14) via a pipe. A filter plate (21) is installed at the center of the inner wall of the filter (14). An air blowing ring (23) is connected to the outside of the filter (14) and at the top and bottom of the filter plate (21). The air inlet of the air blowing ring (23) is connected to a fifth solenoid valve (16) via a pipe. The air inlet of the fifth solenoid valve (16) is connected to an air pump (17) via a pipe. The top and bottom of the outside of the filter (14) are connected to an air suction ring (22). The air inlet of the air suction ring (22) is connected to a sixth solenoid valve (19) via a pipe. The air outlet of the sixth solenoid valve (19) is connected to a suction pump (18) via a pipe.

2. The heat bomb gas displacement system of claim 1, wherein: The first solenoid valve (1), the second solenoid valve (2), the third solenoid valve (3), the fourth solenoid valve (15), the fifth solenoid valve (16), and the sixth solenoid valve (19) are all one-way solenoid valves.

3. The heat bomb gas displacement system of claim 1, wherein: The output of the controller (8) is electrically connected to the input of the first solenoid valve (1), the second solenoid valve (2), the third solenoid valve (3), the vacuum pump (6), the ultraviolet photocatalytic reactor (12), the fourth solenoid valve (15), the vacuum pump (18), the fifth solenoid valve (16), the gas pump (17), and the sixth solenoid valve (19), respectively. The outlet of the vacuum pump (18) is connected to the external air filtration system. The input of the controller (8) is electrically connected to the output of the pressure sensor (4).

4. The heat bomb gas displacement system of claim 1, wherein: The air inlet of the filter (14) is connected to a quick connector (10) via a pipe, and the other end of the quick connector (10) is connected to a thermal explosive (11) via a pipe.

5. The heat bomb gas displacement system of claim 1, wherein: The output of the controller (8) is electrically connected to a water-cooled radiator (13), which is installed on the ultraviolet photocatalytic reactor (12). The inner wall of the pipe between the ultraviolet photocatalytic reactor (12) and the exhaust valve (7) and the interior of the ultraviolet photocatalytic reactor (12) are coated with titanium dioxide photocatalyst.

6. The heat bomb gas displacement system of claim 1, wherein: The other outlet of the nitrogen cylinder (5) is connected to a seventh solenoid valve (20) via a pipe. The outlet of the seventh solenoid valve (20) is connected to the pipe between the filter (14) and the quick connector (10) via a pipe. The seventh solenoid valve (20) is also a one-way solenoid valve. The input of the seventh solenoid valve (20) is electrically connected to the output of the controller (8).

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