Device and method for testing fire extinguishing concentration of variable-temperature variable-pressure gas fire extinguishing agent

Abstract

The invention relates to a device and method for testing the fire extinguishing concentration of a variable-temperature and variable-pressure gaseous fire extinguishing agent, and belongs to the technical field of testing devices.The device comprises a test box, a fire extinguishing agent supply system and a variable-temperature and variable-pressure system, a combustion pipe and a fuel tank are fixed in the test box, and a combustor is fixed in the combustion pipe and communicated with the fuel tank; the fire extinguishing agent supply system comprises a liquid fire extinguishing agent storage tank, a gas fire extinguishing agent storage tank, a spiral heating pipe and a mixing tank; the liquid fire extinguishing agent storage tank, the gas fire extinguishing agent storage tank, the spiral heating pipe and the mixing tank are communicated in sequence; the variable-temperature and variable-pressure system comprises a heating rod and a compressor, and the heating rod is fixed in the test box; the compressor is located outside the test box. According to the invention, the temperature and pressure in the test box are changed by using the heating rod and the compressor, and then mixed gas is introduced into the mixing tank by using the gaseous fire extinguishing agent storage tank and the liquid fire extinguishing agent storage tank, so that various environmental temperatures and various environmental pressures can be simulated, and the fire extinguishing performance of fire extinguishing agents with different proportions can be accurately tested.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, and particularly to a variable-temperature and variable-pressure gas fire extinguishing agent fire extinguishing concentration testing device. Background Art

[0002] Fire accidents occur frequently. Traditional single fire extinguishing agents often have difficulty effectively dealing with different types of fires. Especially in complex environments, the limitations of single fire extinguishing agents are more obvious, such as fires in lithium battery energy storage power stations, oil fires, etc. These fires have characteristics such as easy diffusion and easy explosion, posing higher requirements for the performance of fire extinguishing agents. At the same time, when facing complex fire situations, single fire extinguishing agents often have problems such as low fire extinguishing efficiency and limited application scope. For example, pure water fine water mist fire extinguishing mainly relies on physical effects, and its effect and application scope are limited.

[0003] Based on the above problems, hybrid gas-liquid-solid fire extinguishing agents have emerged. Hybrid gas-liquid-solid fire extinguishing agents are equipped with multiple fire extinguishing agents, which can significantly improve the fire extinguishing efficiency and effect. However, the performance of hybrid fire extinguishing agents with different ratios may vary under different environmental temperatures and environmental pressures. The ideal test method for the fire extinguishing concentration under different environmental temperatures and different environmental pressures is on-site measurement, but this method has many limitations, consumes a great deal of manpower and material resources, and it is relatively difficult to carry out tests under harsh conditions.

[0004] Therefore, how to design a testing device for simulating the fire extinguishing concentration of hybrid gas fire extinguishing agents under multiple environmental conditions is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides a variable-temperature and variable-pressure gas fire extinguishing agent fire extinguishing concentration testing device to solve the technical problem of the current lack of a comprehensive hybrid fire extinguishing agent testing platform.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A variable-temperature and variable-pressure gas fire extinguishing agent fire extinguishing concentration testing device includes: a test chamber, a fire extinguishing agent supply system, and a variable-temperature and variable-pressure system.

[0007] A combustion tube and a fuel tank are fixed inside the test chamber. A burner is fixed inside the combustion tube, and the burner is communicated with the fuel tank through a fuel pipe. The fire extinguishing agent supply system includes a liquid fire extinguishing agent storage tank, a gas fire extinguishing agent storage tank, a spiral heating pipe, and a mixing tank. The liquid outlet of the liquid fire extinguishing agent storage tank and the gas outlet of the gas fire extinguishing agent storage tank are both communicated with the inlet of the spiral heating pipe. The gas inlet of the mixing tank is communicated with the outlet of the spiral heating pipe, and its gas outlet passes through the test chamber and extends into the combustion tube. The temperature and pressure change system includes a heating rod and a compressor. The heating rod is fixed inside the test chamber to change the temperature inside the test chamber. The compressor is located outside the test chamber and is communicated with the inside of the test chamber through an air pipe to change the pressure inside the test chamber.

[0008] The beneficial effects of the present invention are as follows: A test platform for testing the fire extinguishing concentration of a gas fire extinguishing agent with variable temperature and pressure is created. First, the temperature and pressure inside the test chamber are changed by using a heating rod and a compressor, and then a mixed gas with a set ratio is mixed into the mixing tank by using the gas fire extinguishing agent storage tank and the liquid fire extinguishing agent storage tank, which can simulate various ambient temperatures and various ambient pressures, accurately test the fire extinguishing performance of fire extinguishing agents with different ratios, and meet the needs of research and development of new fire extinguishing agents.

[0009] Based on the above technical solutions, the present invention can be further improved as follows.

[0010] Further, the test chamber includes a box body and a box door. A switch opening is provided in the front of the box body. The box door is hinged at the switch opening. The combustion tube and the fuel tank are both located inside the box body. The heating rod is fixed inside the box body.

[0011] The beneficial effect of adopting the above is: By hinging the box door at the switch opening of the box body, it is convenient to maintain the combustion tube and the fuel tank and replenish the fuel.

[0012] Further, the fire extinguishing agent supply system further includes a compressed air storage tank. The gas outlet of the compressed air storage tank is respectively communicated with the spiral heating pipe and the mixing tank to push the gas in the spiral heating pipe and the gas in the mixing tank to move into the combustion tube.

[0013] The beneficial effect of adopting the above is: By using the compressed air storage tank to be respectively communicated with the spiral heating pipe and the mixing tank, it is convenient for the compressed air in the compressed air storage tank to push the gas in the spiral heating pipe and the gas in the mixing tank to move into the combustion tube.

[0014] Further, the temperature and pressure change system further includes a refrigerator, and the refrigerator is fixed inside the test chamber.

[0015] The further beneficial effects are as follows: By fixing the cooler inside the test chamber, when the temperature inside the test chamber exceeds the preset temperature value, the cooler can be started to quickly reduce the temperature inside the test chamber and keep the test temperature stable.

[0016] Furthermore, it further includes a control system. The control system includes a first temperature sensor, a second temperature sensor, a pressure sensor, and a display controller. The first temperature sensor is fixed inside the combustion tube; the second temperature sensor is fixed inside the test chamber; the pressure sensor is fixed inside the test chamber; the display controller is located outside the test chamber and is electrically connected to the burner, the heating rod, the compressor, the first temperature sensor, the second temperature sensor, the pressure sensor, and the cooler respectively.

[0017] The further beneficial effects are as follows: By using the first temperature sensor, the second temperature sensor, and the pressure sensor to respectively monitor the temperature inside the combustion tube and the temperature and pressure inside the test chamber in real time, data support can be provided for the controller, and the output powers of the heating rod and the compressor can be reasonably regulated to maintain the stability of the pressure and temperature inside the test chamber.

[0018] Furthermore, the combustion tube is made of a transparent material.

[0019] The further beneficial effects are as follows: Since the combustion tube is made of a transparent material, it is convenient for experimenters to directly observe the combustion situation inside the combustion tube and roughly judge the fire extinguishing performance of the mixed fire extinguishing agent.

[0020] In addition, a method for testing the fire extinguishing concentration of a variable-temperature and variable-pressure gas fire extinguishing agent is provided, including the variable-temperature and variable-pressure gas fire extinguishing agent concentration testing device as described above. The specific steps are as follows:

[0021] S1. The heating rod heats the gas inside the test chamber to raise the internal temperature of the test chamber to the preset temperature value. At the same time, the compressor injects high-pressure gas into the test chamber to raise the air pressure inside the test chamber to the preset pressure value.

[0022] S2. The fuel tank injects fuel into the combustion tube through the fuel pipe, and then the burner ignites the fuel inside the combustion tube to generate a combustion flame.

[0023] S3. The liquid fire extinguishing agent storage tank and the gas fire extinguishing agent storage tank are introduced into the spiral heating tube in a certain proportion. After the spiral heating tube heats the liquid fire extinguishing agent into a gas, the mixed gas is introduced into the mixing tank for mixing.

[0024] S4. The fully mixed gas is introduced into the combustion tube for fire extinguishing performance testing. Description of the Drawings

[0025] Figure 1 For a variable-temperature and variable-pressure gas fire extinguishing agent fire extinguishing concentration testing device of the present invention

[0026] Figure 2 In the attached drawings of a test device for the fire extinguishing concentration of a variable-temperature and variable-pressure gas fire extinguishing agent according to the present invention, the list of components represented by each reference numeral is as follows:

[0027] 1. Test chamber, 11. Chamber body, 12. Chamber door, 2. Fire extinguishing agent supply system, 21. Liquid fire extinguishing agent storage tank, 22. Gas fire extinguishing agent storage tank, 23. Spiral heating tube, 24. Mixing tank, 25. Compressed air storage tank, 3. Compressor, 4. Combustion tube, 5. Fuel tank, 6. Control system, 61. Second temperature sensor, 62. Display controller. Detailed implementation manners

[0028] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] As Figure 1 and Figure 2 shown, a test device for the fire extinguishing concentration of a variable-temperature and variable-pressure gas fire extinguishing agent includes: a test chamber 1, a fire extinguishing agent supply system 2, and a variable-temperature and variable-pressure system.

[0030] A combustion tube 4 and a fuel tank 5 are fixed in the test chamber 1. A burner is fixed in the combustion tube 4 and the burner is connected to the fuel tank 5 through a fuel pipe; the fire extinguishing agent supply system 2 includes a liquid fire extinguishing agent storage tank 21, a gas fire extinguishing agent storage tank 22, a spiral heating tube 23, and a mixing tank 24. The liquid outlet of the liquid fire extinguishing agent storage tank 21 and the gas outlet of the gas fire extinguishing agent storage tank 22 are both connected to the inlet of the spiral heating tube 23. The gas inlet of the mixing tank 24 is connected to the outlet of the spiral heating tube 23 and its gas outlet passes through the test chamber 1 and extends into the combustion tube 4; the variable-temperature and variable-pressure system includes a heating rod and a compressor 3. The heating rod is fixed in the test chamber 1 to change the temperature in the test chamber 1; the compressor 3 is located outside the test chamber 1 and is connected to the inside of the test chamber 1 through an air pipe to change the pressure in the test chamber 1.

[0031] As Figure 1 shown, in some specific embodiments, the test chamber 1 may include a chamber body 11 and a chamber door 12. A switch opening is provided in the front of the chamber body 11; the chamber door 12 is hinged at the switch opening; both the combustion tube 4 and the fuel tank 5 are located inside the chamber body 11; the heating rod is fixed inside the chamber body 11.

[0032] As Figure 1 and Figure 2 shown, in some specific embodiments, the fire extinguishing agent supply system 2 may further include a compressed air storage tank 25. The gas outlet of the compressed air storage tank 25 is respectively connected to the spiral heating tube 23 and the mixing tank 24 to push the gas in the spiral heating tube 23 and the gas in the mixing tank 24 to move into the combustion tube 4.

[0033] In some specific embodiments, the variable temperature and variable pressure system may further include a refrigerator, which is fixed inside the test chamber 1.

[0034] Such as Figure 1 and Figure 2 As shown, in some specific embodiments, it may further include a control system 6. The control system 6 includes a first temperature sensor, a second temperature sensor 61, a pressure sensor, and a display controller 62. The first temperature sensor is fixed inside the combustion tube 4; the second temperature sensor 61 is fixed inside the test chamber 1; the pressure sensor is fixed inside the test chamber 1; the display controller 62 is located outside the test chamber 1 and is electrically connected to the burner, the heating rod, the compressor 3, the first temperature sensor, the second temperature sensor 61, the pressure sensor, and the refrigerator respectively.

[0035] Specifically, the combustion tube 4 can be made of a transparent material.

[0036] In addition, a method for testing the fire extinguishing concentration of a variable temperature and variable pressure gaseous fire extinguishing agent is provided, including the variable temperature and variable pressure gaseous fire extinguishing agent concentration testing device described above. The specific steps are as follows:

[0037] S1. The heating rod heats the gas inside the test chamber 1 to raise the internal temperature of the test chamber 1 to a preset temperature value. At the same time, the compressor 3 introduces high-pressure gas into the test chamber 1 to raise the air pressure inside the test chamber 1 to a preset pressure value.

[0038] S2. The fuel tank 5 introduces fuel into the combustion tube 4 through the fuel pipe, and then the burner ignites the fuel in the combustion tube 4 to generate a combustion flame.

[0039] S3. The liquid fire extinguishing agent storage tank 21 and the gaseous fire extinguishing agent storage tank 22 are introduced into the spiral heating tube 23 in a certain proportion. After the spiral heating tube 23 heats the liquid fire extinguishing agent into a gas, the mixed gas is introduced into the mixing tank 24 for mixing.

[0040] S4. The fully mixed gas is introduced into the combustion tube 4 for fire extinguishing performance testing.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device, characterized in that: include: A test box (1), wherein a combustion tube (4) and a fuel tank (5) are fixed in the test box (1), a burner is fixed in the combustion tube (4) and the burner is connected to the fuel tank (5) through a fuel pipe; A fire extinguishing agent supply system (2), the fire extinguishing agent supply system (2) comprising a liquid fire extinguishing agent storage tank (21), a gas fire extinguishing agent storage tank (22), a spiral heating tube (23) and a mixing tank (24), the liquid outlet of the liquid fire extinguishing agent storage tank (21) and the air outlet of the gas fire extinguishing agent storage tank (22) are both connected to the inlet of the spiral heating tube (23), the air inlet of the mixing tank (24) is connected to the air outlet of the spiral heating tube (23), and the air outlet thereof passes through the test box (1) and extends into the combustion tube (4); A variable temperature and pressure system, the variable temperature and pressure system comprising a heating rod and a compressor (3), the heating rod being fixed in the test box (1) to change the temperature in the test box (1); the compressor (3) being located outside the test box (1) and connected to the test box (1) through an air pipe to change the pressure in the test box (1).

2. A variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device according to claim 1, characterized in that: The test box (1) comprises a box body (11) and a box door (12); a switch opening is provided at the front of the box body (11); the box door (12) is hinged at the switch opening; the combustion tube (4) and the fuel tank (5) are both located in the box body (11); and the heating rod is fixed in the box body (11).

3. The variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device according to claim 1, characterized in that: The fire extinguishing agent supply system (2) also includes a compressed air storage tank (25), the air outlet of which is connected to the spiral heating tube (23) and the mixing tank (24) respectively, so as to push the gas in the spiral heating tube (23) and the gas in the mixing tank (24) to move into the combustion tube (4).

4. The variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device according to claim 1, characterized in that: The variable temperature and variable pressure system also includes a refrigerator, which is fixed in the test box (1).

5. The variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device according to claim 4, characterized in that: The invention also includes a control system (6), wherein the control system (6) includes a first temperature sensor, a second temperature sensor (61), a pressure sensor and a display controller (62), wherein the first temperature sensor is fixed in the combustion tube (4); the second temperature sensor (61) is fixed in the test box (1); the pressure sensor is fixed in the test box (1); the display controller (62) is located outside the test box (1) and is electrically connected to the burner, the heating rod, the compressor (3), the first temperature sensor, the second temperature sensor (61), the pressure sensor and the refrigerator, respectively.

6. The variable temperature and pressure gas fire extinguishing agent fire extinguishing concentration test device according to claim 1, characterized in that: The combustion tube (4) is made of transparent material.

7. A method for testing the fire extinguishing concentration of a variable temperature and pressure gas fire extinguishing agent, characterized in that: The method comprises the variable temperature and pressure gas fire extinguishing agent concentration testing device as claimed in any one of claims 1 to 6, wherein the specific steps are as follows: S1, the heating rod heats the gas in the test box (1), raising the internal temperature of the test box (1) to a preset temperature value, and at the same time, the compressor (3) introduces high-pressure gas into the test box (1), raising the gas pressure in the test box (1) to a preset pressure value; S2, the fuel tank (5) passes fuel into the combustion tube (4) through the fuel pipe, and then the burner ignites the fuel in the combustion tube (4) to generate a combustion flame; S3, the liquid fire extinguishing agent storage tank (21) and the gas fire extinguishing agent storage tank (22) are introduced into the spiral heating tube (23) in a certain proportion, and after the spiral heating tube (23) heats the liquid fire extinguishing agent into gas, the mixed gas is introduced into the mixing tank (24) for mixing; S4. The fully mixed gas is introduced into the combustion tube (4) to perform a fire extinguishing performance test.

Images