Fire extinguishing agent spraying test experimental device

Abstract

The utility model relates to the technical field of fire-fighting product detection, in particular to a fire extinguishing agent spraying test experimental device which comprises a mixing tank, a liquid supply pipeline and at least two foam storage tanks used for storing foam at different temperatures, one end of the liquid supply pipeline is connected with the mixing tank, and the other end of the liquid supply pipeline is connected with each foam storage tank through a metering pump. The mixing tank is provided with a foam tank and a foam gun connected with the foam tank, a flow meter is arranged on the foam pipe, and a mixing temperature sensor is further arranged in the mixing tank. When the fire extinguishing agent spraying test is carried out, the fire extinguishing agents with different cold and hot temperatures can be injected into the mixing tank, the required test temperature can be quickly and conveniently adjusted, and the spraying test can be carried out, so that the interval time required for adjusting different temperatures in multiple experiments is shortened, and the experiment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection product detection, and more specifically refers to an experimental device which can be used to study the influence of temperature and pressure coupling on the foaming multiple and liquid separation time of foam fire extinguishing agent. Background Art

[0002] Foam fire extinguishing agent is a powerful tool for fighting oil fires, and the foaming multiple and liquid separation time of foam fire extinguishing agent are important parameters for measuring the performance of foam fire extinguishing agent. Due to the large latitude span of my country, there is a large temperature difference between the north and the south; the large altitude difference between different regions leads to obvious differences in atmospheric pressure. The foaming multiple and liquid separation time of foam fire extinguishers vary greatly under different temperature and pressure environments, which will affect the performance parameters of foam fire extinguishers to a certain extent, resulting in different amounts of foam fire extinguishing agents used in different regions during use, and the demand for foam reserves in different regions will also be affected.

[0003] At present, domestic designs use foam guns to spray foam fire extinguishing agents at different temperatures and pressures to analyze the foaming multiples and liquid separation time of foam fire extinguishing agents. However, in the experiments, temperature heating and cooling devices are set on the walls of the storage tanks to adjust the temperature variables. After each experiment, the fire extinguishing agent in the storage tank needs to be heated or cooled again, and heating or cooling takes a certain amount of time. In the case of experiments with many tests, this method will lead to problems such as long entire experiment time and high equipment energy consumption. Utility Model Content

[0004] The utility model aims to provide a fire extinguishing agent spraying test experimental device to solve the above problems.

[0005] The utility model adopts the following technical solutions:

[0006] A fire extinguishing agent spraying test device comprises a mixing tank, a liquid supply pipeline is provided on the mixing tank, at least two foam storage tanks for storing cold and hot foams at different temperatures are connected to the liquid supply pipeline, and a butterfly valve is provided on the liquid supply pipeline. A foam pipe and a foam gun connected to the foam pipe are provided on the mixing tank, a flow meter is provided on the foam pipe, a pressure gauge and a pressurizing mechanism are provided on the mixing tank, and a mixing temperature sensor is provided in the mixing tank.

[0007] Furthermore, the pressurizing mechanism includes an air compressor and a pressurizing pipeline, the pressurizing pipeline is provided with a pressure regulating valve, one end of the pressurizing pipeline is connected to the air compressor, and the other end is connected to a mixing tank.

[0008] Furthermore, the foam storage tank is provided with a metering pump, and the foam storage tank is connected to the liquid supply pipeline via the metering pump.

[0009] Furthermore, the foam storage tank includes a first cold foam storage tank, a second hot foam storage tank and a third normal temperature foam storage tank.

[0010] Furthermore, a first temperature sensor is disposed in the first cold foam storage tank, a second temperature sensor is disposed in the second hot foam storage tank, and a third temperature sensor is disposed in the third normal-temperature foam storage tank.

[0011] Preferably, the first cold foam storage tank and the second hot foam storage tank are provided with a temperature control mechanism, which includes a compressor, a refrigerant pipeline, a condenser, a capillary tube, a dry filter and an evaporator. The evaporator is arranged in the wall cavity of the first cold foam storage tank, and is used for the refrigerant to evaporate and absorb heat. The condenser is arranged in the wall cavity of the second hot foam storage tank, and is used for the refrigerant to condense and release heat. The compressor is connected to the evaporator, the capillary tube, the dry filter and the condenser in sequence through the refrigerant pipeline.

[0012] Furthermore, a pressure relief valve is provided on the mixing tank.

[0013] Furthermore, the mixing tank is provided with a drain valve.

[0014] Furthermore, a sealing pressure cover is provided at the opening of the mixing tank.

[0015] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model is connected to a mixing tank on one side of a liquid supply pipeline, and is connected to at least two foam storage tanks of different temperatures, hot and cold, through metering pumps on the other side. A pressure gauge and a pressurizing mechanism are provided on the mixing tank, and a mixing temperature sensor is provided in the mixing tank. By injecting fire extinguishing agents of different temperatures, hot and cold, into the mixing tank, the required test temperature can be quickly and conveniently prepared to conduct a spray test, thereby reducing the interval time required for preparing different temperatures in multiple experiments and improving the experimental efficiency.

[0017] 2. The utility model is provided with an evaporator in the wall cavity of the first cold foam storage tank, and a condenser in the second hot foam storage tank. The condenser and the evaporator are connected to the compressor through a refrigerant pipeline. When the evaporator absorbs heat when cooling the first cold foam storage tank, the heat can be transferred to the condenser through the refrigerant pipeline and heat the second hot foam storage tank at the same time, thereby realizing heat circulation and rational utilization of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the pressurizing mechanism of the utility model.

[0020] Figure 3 It is a schematic diagram of the temperature regulating mechanism of the utility model.

[0021] Figure 4 It is the right view of the mixing reaction tank of the utility model.

[0022] Among them, the numbers in the figure are: three-way pipe 1; mixing reaction tank 10; flow meter 11; pressure relief valve 12; foam pipe 13; foam gun 14; pressure gauge 15; mixing temperature sensor 16; drain valve 17; sealing pressurization cover 18; butterfly valve 19; first foam storage tank 20; second foam storage tank 21; third normal temperature foam storage tank 22; metering pump 23; first temperature sensor 201; second temperature sensor 211; third temperature sensor 221; liquid supply pipeline 30; temperature control mechanism 40; compressor 41; condenser 42; evaporator 43; drying filter 44; capillary tube 45; condensation pipeline 46; pressurization mechanism 50; pressurization pipeline 51; air compressor 52; pressure regulating valve 53. DETAILED DESCRIPTION

[0023] The specific implementation of the embodiment of the utility model is described below with reference to the accompanying drawings.

[0024] Reference Figure 1 A fire extinguishing agent spraying test device includes a mixing tank 10, a liquid supply pipeline 30 is provided on the mixing tank 10, at least two foam storage tanks for storing different hot and cold temperatures are connected to the liquid supply pipeline 30, and a butterfly valve 19 is also provided on the liquid supply pipeline 30. The butterfly valve 19 is used as a switch valve and can also block air leakage to the foam storage tank. The mixing tank 10 is provided with a foam pipe 13 and a foam gun 14 connected to the foam pipe 13. The foam pipe 13 is also provided with a flow meter 11, and the flow meter 11 can monitor the flow rate of the foam fire extinguishing agent spraying. A mixing temperature sensor 16 is provided in the mixing tank 10, and the mixing temperature sensor 16 can monitor the temperature of the fire extinguishing agent in the mixing tank 10. The mixing tank 10 is also provided with a pressure gauge 15 and a pressurizing mechanism 50, and the pressure gauge 15 can detect the pressure in the mixing tank 10. A metering pump 23 is provided on the foam storage tank, and the foam storage tank is connected to the liquid supply pipeline 30 through the metering pump 23.

[0025] Refer to 1. Figure 2 and Figure 4 In this embodiment, a three-way pipe 1 is preferably provided on the mixing tank 10, and the three-way pipe 1 is respectively connected to the pressure gauge 15, the pressurizing pipeline 51, and the pressure relief valve 12. The pressure relief valve 12 is used to discharge the pressure in the mixing tank 10 after the test is completed, so as to open the sealing pressurizing cover 18 and clean the mixing tank 10.

[0026] Reference Figure 2The pressurizing mechanism 50 includes an air compressor 52 and a pressurizing pipeline 51. The pressurizing pipeline 51 is provided with a pressure regulating valve 53, and the pressure regulating valve 53 can control and adjust the pressure in the mixing tank 10. One end of the pressurizing pipeline 51 is connected to the air compressor 52, and the other end is connected to the mixing tank 10.

[0027] Reference Figure 1 and Figure 3 The foam storage tank includes a first cold foam storage tank 20, a second hot foam storage tank 21 and a third normal temperature foam storage tank 22. A first temperature sensor 201 is provided in the first cold foam storage tank 20, a second temperature sensor 211 is provided in the second hot foam storage tank 21, and a third temperature sensor 221 is provided in the third normal temperature foam storage tank 22. The first cold foam storage tank 20 and the second hot foam storage tank 21 are provided with a temperature control mechanism 40. The temperature control mechanism 40 includes a compressor 41, a refrigerant pipeline 46, a condenser 42, a capillary tube 45, a dry filter 44 and an evaporator 43. The evaporator 43 is arranged in the wall cavity of the first cold foam storage tank 20 for evaporation of the refrigerant and heat absorption. The condenser 42 is arranged in the wall cavity of the second hot foam storage tank 21 for condensation of the refrigerant and release of heat. The compressor 41 is connected to the evaporator 43, the capillary tube 45, the dry filter 44 and the condenser 42 in sequence through the refrigerant pipeline 46.

[0028] Reference Figures 1 to 4 The specific operation process of the embodiment of the device is as follows:

[0029] The experiment is divided into two stages, namely the preparation stage and the experimental stage. In the preparation stage, the foam fire extinguishing agent of the same material is firstly added into the first cold foam storage tank 20, the second hot foam storage tank 21 and the third normal temperature foam storage tank 22 respectively, and then the temperature regulating mechanism 40 is turned on, the first cold foam storage tank 20 is cooled to the required temperature through the evaporator 43, and the second hot foam storage tank 21 is heated to the required temperature through the condenser 42.

[0030] During the experimental stage, according to the experimental temperature requirements, the metering pump 23 draws the foam fire extinguishing agent from the first cold foam storage tank 20, the second hot foam storage tank 21 and the third normal temperature foam storage tank 22 respectively, and mixes and prepares it in the mixing tank 10 through the liquid supply pipeline 30. The mixing temperature sensor 16 monitors the temperature of the fire extinguishing agent in the mixing tank 10 to make its temperature reach the required temperature of the experiment, and then closes the butterfly valve 19.

[0031] According to the experimental pressure requirement, the pressurizing mechanism 50 is turned on, and the pressure in the mixing tank 10 is adjusted and controlled by the air compressor 52 and the pressure regulating valve 53. The pressure gauge 15 monitors the pressure in the mixing tank 10 to make the pressure reach the pressure required for the experiment.

[0032] Finally, the foam gun 14 is opened to spray the fire extinguishing agent, and the foaming multiple and liquid separation time of the fire extinguishing agent after spraying are observed, thereby knowing the foaming multiple and liquid separation time of the fire extinguishing agent under different temperature and pressure conditions.

[0033] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A fire extinguishing agent spraying test experimental device, characterized in that: It comprises a mixing tank, which is provided with a liquid supply pipeline, on which at least two foam storage tanks for storing cold and hot fire extinguishing agents at different temperatures are connected, a butterfly valve is provided on the liquid supply pipeline, a foam pipe and a foam gun connected to the foam pipe are provided on the mixing tank, a flow meter is provided on the foam pipe, a pressurizing mechanism and a pressure gauge are also provided on the mixing tank, and a mixing temperature sensor is provided in the mixing tank.

2. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: The pressurizing mechanism comprises an air compressor and a pressurizing pipeline. A pressure regulating valve is arranged on the pressurizing pipeline. One end of the pressurizing pipeline is connected to the air compressor, and the other end is connected to a mixing tank.

3. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: The foam storage tank is provided with a metering pump, and the foam storage tank is connected to the liquid supply pipeline through the metering pump.

4. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: The foam storage tanks include a first cold foam storage tank, a second hot foam storage tank and a third normal-temperature foam storage tank.

5. The fire extinguishing agent spraying test experimental device according to claim 4, characterized in that: The first cold foam storage tank is provided with a first temperature sensor, the second hot foam storage tank is provided with a second temperature sensor, and the third normal-temperature foam storage tank is provided with a third temperature sensor.

6. The fire extinguishing agent spraying test experimental device according to claim 4, characterized in that: The first cold foam storage tank and the second hot foam storage tank are provided with a temperature control mechanism, which includes a compressor, a refrigerant pipeline, a condenser, a capillary tube, a drying filter and an evaporator. The evaporator is arranged in the wall cavity of the first cold foam storage tank, and is used for the refrigerant to evaporate and absorb heat. The condenser is arranged in the wall cavity of the second hot foam storage tank, and is used for the refrigerant to condense and release heat. The compressor is connected to the evaporator, the drying filter, the capillary tube and the condenser in sequence through the refrigerant pipeline.

7. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: The mixing tank is provided with a pressure relief valve.

8. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: A sealing pressure cover is provided at the upper opening of the mixing tank.

9. The fire extinguishing agent spraying test experimental device according to claim 1, characterized in that: The mixing tank is provided with a drain valve.

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