Fire-fighting foam steam inhibition performance measurement and oil recovery device

Abstract

The invention discloses a fire-fighting foam steam inhibition performance measurement and oil product recovery device, and relates to the technical field of fire-fighting experiment equipment, the fire-fighting foam steam inhibition performance measurement and oil product recovery device comprises a fuel cylinder, an experiment box, a foam supply box, a concentration sensor and an oil-water separation box, and the fuel cylinder is internally provided with a cavity for storing fuel; the experiment box is connected with the fuel cylinder; the foam supply box is connected with the experiment box; the concentration sensor is arranged on the top wall in the experiment box; an aerogel filter membrane is arranged in the oil-water separation box and divides the interior of the oil-water separation box into a fuel oil cavity and a water cavity, and the fuel oil cavity is communicated with the outlet of the experiment box. After an experiment is finished, an oil-water mixture left in the experiment box can be discharged into the oil-water separation box, oil and water can be separated through the oleophylic and hydrophobic characteristics of the aerogel filter membrane, separated fuel oil is left in the fuel oil cavity, and water flows into the water cavity, so that secondary utilization of the fuel oil is realized, and energy is saved.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting experimental equipment, and in particular to a fire-fighting foam vapor inhibition performance measurement and oil recovery device. Background Art

[0002] With the advancement of science and technology and the continuous improvement of people's living standards, the demand for fire prevention and control is also increasing. Firefighting foam is the most common and effective method for extinguishing flammable liquid fires. When extinguishing a fire, firefighting foam can cover the burning surface of the burning material, forming a dense foam layer. The foam layer absorbs heat and instantly cools the burning material, thus playing a cooling and fire-extinguishing role. A certain thickness of firefighting foam layer can also suppress the escape of fuel vapor from below, providing a sealing effect and preventing the fuel from reigniting. To study the vapor suppression properties of firefighting foam, a firefighting foam vapor suppression performance test device has been developed. After covering the fuel surface with firefighting foam, the vapor suppression performance of the firefighting foam is determined by measuring the concentration of fuel vapor. In addition, to make the fuel closer to the actual temperature, liquid heat exchange is often used to heat the fuel before the experiment.

[0003] However, the existing fire foam steam suppression experimental device still has shortcomings. For example, it does not have a structure for recovering liquid fuel. The liquid fuel cannot be recycled after the experiment, resulting in a waste of liquid fuel. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a fire foam vapor inhibition performance measurement and oil recovery device to solve the technical problem that the fire foam vapor inhibition experimental device in the prior art has no structure for recovering liquid fuel, and the liquid fuel cannot be reused and recovered after the experiment, resulting in waste of liquid fuel.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a fire-fighting foam vapor suppression performance measurement and recovery device, comprising: a fuel cartridge having a cavity therein for storing fuel; an experimental box, connected to the fuel cartridge; a foam supply box, connected to the experimental box; A concentration sensor is provided on the top wall of the experimental box; The oil-water separation box is provided with an aerogel filter membrane. The aerogel filter membrane separates the interior of the oil-water separation box into a fuel chamber and a water chamber. The fuel chamber is connected to the outlet of the experimental box.

[0006] In some embodiments, a fuel recovery tank is further included, wherein a pipeline of the fuel recovery tank is connected to the fuel cavity and the cavity of the fuel cartridge.

[0007] In some embodiments, a glass plate is further included, which is suspended on the top wall of the experimental box and has a plurality of through holes.

[0008] In some embodiments, a nitrogen gas cylinder is further included, and the nitrogen gas cylinder pipeline is connected to the top of the experimental box.

[0009] In some embodiments, the fire foam vapor suppression performance measurement and oil recovery device also includes a heat recovery component, which includes a heat exchange pipe, a recovery box and a sliding part. The heat exchange pipe is arranged in the fuel cylinder and is used to conduct heat to the fuel cylinder. The sliding part is slidably arranged inside the recovery box, and the interior of the recovery box is connected to the heat exchange pipe.

[0010] In some embodiments, the sliding member divides the interior of the recovery tank into a first cavity and a second cavity, the first cavity is connected to the heat exchange tube, and the second cavity is connected to the fuel cavity.

[0011] In some embodiments, the fuel cylinder includes an insulation shell and a storage box. The storage box is located inside the insulation shell and defines the cavity therein. The heat exchange tube is located inside the insulation shell and connected to an outer wall of the storage box.

[0012] In some embodiments, the heat exchange tube is spirally wound around the outer wall of the storage tank.

[0013] In some embodiments, a spiral groove is formed on the outer wall of the storage box, and the heat exchange tube is fixed to the spiral groove.

[0014] In some embodiments, the heat recovery assembly further includes a return pipe, a heating element, and a temperature sensor. One end of the return pipe is connected to the inlet of the heat exchange pipe, and the other end of the return pipe is connected to a portion of the heat exchange pipe outside the fuel cylinder.

[0015] Compared to existing technologies, the firefighting foam vapor suppression performance measurement and oil recovery device provided by this invention features a fuel tank cavity that can be used to store liquid fuel to be tested and to deliver the liquid fuel to the test chamber. A foam supply tank is used to deliver foam to the test chamber to mix the foam and liquid fuel. A concentration sensor determines the foam's fire-extinguishing performance by sensing the fuel concentration. After the experiment is completed, the remaining oil-water mixture in the test chamber can be drained into an oil-water separation tank. The lipophilic and hydrophobic properties of the aerogel filter membrane separate the oil and water, with the separated fuel remaining in the fuel chamber and the water flowing into the water chamber. This allows for secondary use of the fuel and achieves resource recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a fire-fighting foam vapor suppression performance measuring device provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a storage box provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to solve the technical problem that the fire-fighting foam experimental device in the prior art has no structure for recovering liquid fuel, and the liquid fuel cannot be reused and recovered after the experiment, resulting in waste of liquid fuel, the present invention provides a fire-fighting foam vapor inhibition performance measurement and oil recovery device, which can separate the oil-water mixture after the experiment to reuse the fuel and save energy.

[0019] See also Figure 1 , Figure 1 This is a structural schematic diagram of a fire foam vapor suppression performance measurement and oil recovery device in one embodiment of the present invention. The fire foam vapor suppression performance measurement and oil recovery device includes a fuel cylinder 11, a heat exchange tube 12 and a heat recovery assembly 13. A cavity for storing fuel is provided in the fuel cylinder 11; the heat exchange tube 12 is connected to the fuel cylinder 11 to exchange heat with the fuel cylinder 11; the heat recovery assembly 13 includes a recovery box 131 and a sliding member 132. The sliding member 132 is slidably arranged inside the recovery box 131 and divides the inside of the recovery box 131 into a first cavity 133 and a second cavity 134. The first cavity 133 is connected to the heat exchange tube 12.

[0020] In this embodiment, the cavity inside the fuel barrel 11 can be used to hold the liquid fuel to be tested. The heat exchange tube 12 is connected to the fuel barrel 11. When high-temperature liquid flows, the heat exchange tube 12 can transfer the heat of the high-temperature liquid to the fuel barrel 11. The fuel barrel 11 then transfers the heat to the liquid fuel to heat the liquid fuel. The fuel barrel 11 can also be provided with a temperature sensor, which can monitor the temperature of the liquid fuel so that the temperature of the liquid fuel reaches a preset temperature. When the liquid fuel reaches the preset temperature, the remaining high-temperature liquid can be discharged into the first cavity 133 of the recovery tank 131. Driven by the dual forces of liquid and high temperature, the high-temperature liquid can drive the sliding member 132 to slide toward the second cavity 134 to compress the second cavity 134 and achieve the corresponding function. It can be seen that the present invention can complete the secondary utilization of the high-temperature liquid after the liquid fuel is heated, saving energy.

[0021] The sliding member 132 includes a slider 135 and a telescopic cylinder 136, which are connected to each other. The telescopic cylinder 136 is located in the second cavity 134 and connected to the inner wall of the recovery box 131. The telescopic cylinder 136 can automatically activate when it retracts to a certain distance, driving the slider 135 to slide toward the first cavity 133, thereby driving the slider 135 to return to its original position and prepare for the next use.

[0022] In one embodiment, see Figure 1 and Figure 2 The fuel cartridge 11 includes an insulating shell 111 and a storage box 112. The storage box 112 is located inside the insulating shell 111 and is provided with the aforementioned cavity for storing liquid fuel. The heat exchange tube 12 is located inside the insulating shell 111 and is connected to the outer wall of the storage box 112. In this embodiment, both ends of the heat exchange tube 12 are located outside the insulating shell 111, while the middle portion is located inside the insulating shell 111 to facilitate connection with the storage box 112 inside the insulating shell 111. By arranging the storage box 112 inside the insulating shell 111, this embodiment can insulate the liquid fuel inside the storage box 112, which is beneficial for improving the heating efficiency of the liquid fuel. The inner wall of the insulating shell 111 can be coated with an aerogel layer to further enhance the insulation effect inside the insulating shell 111.

[0023] In one embodiment, see Figure 2 The heat exchange tube 12 is spirally wound around the outer wall of the storage box 112. The outer wall of the storage box 112 is provided with a spiral groove 113, and the heat exchange tube 12 is fixed in place in the spiral groove 113. In this embodiment, the heat exchange tube 12 is spirally wound around the storage box 112, which increases the contact area with the storage box 112 and improves heat transfer efficiency. The heat exchange tube 12 further contacts the spiral groove 113 on the outer wall of the storage box 112, further increasing the contact area with the storage box 112, further improving heat exchange efficiency and enhancing the heating efficiency of the liquid fuel.

[0024] In one embodiment, see Figure 1The heat recovery assembly 1 also includes a return pipe 14, a heating element 15, and a temperature sensor 16. One end of the return pipe 14 is connected to the inlet of the heat exchange pipe 12, and the other end of the return pipe 14 is connected to a portion of the heat exchange pipe 12 outside the fuel cylinder 11. In this embodiment, a liquid pump 17 is provided on the return pipe 14. The liquid pump 17 is used to provide power for the circulation of the heat transfer liquid inside the return pipe 14, so that the heat transfer liquid can circulate in the return pipe 14 so that the heat transfer liquid can heat the liquid fuel. The above-mentioned heating element 15 and temperature sensor 16 are both provided in the liquid pump 17. The heating element 15 is used to heat the heat transfer liquid flowing through the liquid pump 17 to increase the temperature of the heat transfer liquid. When the heat transfer liquid flows through the storage tank 112, it can heat the liquid fuel inside the storage tank 112. The temperature sensor 16 is used to measure the temperature of the thermal fluid flowing through the liquid pump 17. The temperature sensor 16 can be used in conjunction with the heater 15 so that the heater 15 heats the thermal fluid to a target temperature, thereby allowing the thermal fluid to heat the liquid fuel to a target temperature.

[0025] Further, see Figure 1 The return pipe 14 is provided with a first valve 141, and the heat exchange pipe 12 is provided with a second valve 121. When the heat exchange pipe 12 is heating the liquid fuel in the storage tank 112, the first valve 141 can be opened and the second valve 121 can be closed, so that the heat transfer fluid in the heat exchange pipe 12 flows into the return pipe 14, and then flows from the return pipe 14 into the inlet of the heat exchange pipe 12, thereby achieving the effect of circulating the heat transfer fluid. When the liquid fuel is completely heated, the first valve 141 can be closed and the second valve 121 can be opened, so that the remaining heat transfer fluid flows into the first cavity 133 of the recovery tank 131, pressurizing the first cavity 133, pushing the slider 135 toward the second cavity 134, compressing the second cavity 134, and driving the liquid in the second cavity 134 to be discharged.

[0026] In one embodiment, see Figure 1 The fire foam vapor suppression performance measurement and oil recovery device also includes an experimental box 2, a foam supply box 3, a concentration sensor 4 and the above-mentioned heat recovery component 1. The experimental box 2 pipeline connects the fuel cylinder 11 and the foam supply box 3. The experimental box 2 is connected to the second cavity 134 of the recovery box 131 through the discharge pipe 21. The concentration sensor 4 is arranged on the top wall inside the experimental box 2.

[0027] In this embodiment, a heat recovery assembly 1 is applied to a firefighting foam vapor suppression performance measurement and oil recovery device, so that after the firefighting foam vapor suppression performance measurement device heats the liquid fuel, the residual high-temperature heat transfer fluid can be recycled and reused, saving energy. The foam supply box 3 of this embodiment is used to input the foam to be tested into the experimental box 2. The heat recovery assembly 1 is connected to the experimental box 2 and is used to input the liquid fuel to be tested into the experimental box 2. The experimental box 2 serves as a mixing place for the foam and liquid fuel, so as to facilitate systematic research on the vapor suppression performance of different firefighting foams on the same fuel, and the vapor suppression performance of the same firefighting foam on different fuels.

[0028] In one embodiment, see Figure 1 The fire foam evaporation inhibition performance measuring device and oil recovery also includes a glass plate 5, which is suspended on the top wall inside the experimental box 2. The glass plate 5 is provided with a plurality of through holes 51. In this embodiment, the glass plate 5 is located at the upper part of the experimental box 2 and can play a certain supporting role for the injected foam. After the foam is injected into the experimental box 2, the glass plate 5 can prevent the foam from directly accumulating at the bottom of the experimental box 2, thereby maintaining the stability and uniformity of the foam layer and improving the accuracy of the experiment. In addition, the porous structure of the glass plate 5 can slow down the impact on the foam during the falling process, and prevent the foam from breaking when it contacts the bottom of the experimental box 2, thereby maintaining the integrity and stability of the foam, which is of great significance for accurately measuring the evaporation inhibition performance of the foam.

[0029] The above-mentioned concentration sensor 4 may be a gas chromatograph, which analyzes the content of fuel vapor by detecting the composition and concentration of the gas. If the content of fuel vapor is lower, the sealing performance of the foam is stronger, and vice versa.

[0030] In some embodiments, see Figure 1 The fire-fighting foam vapor suppression performance measurement and oil recovery device also includes a nitrogen cylinder 6, the pipeline of which is connected to the top of the experimental box 2. In this embodiment, nitrogen does not chemically react with liquid fuel or foam. During the measurement process, by introducing nitrogen into the experimental box 2, the air in the experimental box 2 can be replaced to prevent the liquid fuel from volatilizing or partially burning in an oxygen-containing environment, thereby interfering with the gas chromatograph's accurate detection of fuel vapor. By introducing nitrogen, the oxygen concentration in the container can be reduced, avoiding unnecessary chemical reactions of the fuel during the measurement process, and ensuring the accuracy of the measurement results.

[0031] Nitrogen also acts as a carrier gas during the measurement process. When liquid fuel vapor evaporates from the fuel surface, nitrogen carries it into the gas chromatograph for detection. The gas chromatograph analyzes the fuel vapor content by measuring its composition and concentration. Nitrogen's stability and inertness make it an ideal carrier gas, accurately transporting fuel vapor to the detection instrument, enabling continuous monitoring of fuel vapor concentration.

[0032] Experimental box 2 is connected to the second chamber 134 of recovery box 131 via a discharge pipe 21. A third valve 211 is provided on discharge pipe 21. During the experiment, third valve 211 can be closed to prevent the liquid fuel and foam inside experimental box 2 from flowing downward. After the experiment is complete, third valve 211 can be opened to allow the oil-water mixture inside experimental box 2 to flow downward through discharge pipe 21 into the second chamber 134 of recovery box 131.

[0033] In one embodiment, see Figure 1 The firefighting foam vapor suppression performance measurement and oil recovery device also includes an oil-water separation tank 7, which is equipped with an aerogel filter membrane 71. The aerogel filter membrane 71 divides the interior of the oil-water separation tank 7 into a fuel chamber 72 and a water chamber 73. The fuel chamber 72 is connected to the second chamber 134 of the recovery tank 131 via a pipeline. In this embodiment, the oil-water separation tank 7 and the recovery tank 131 are connected via a discharge pipe 74. When the slider 135 slides toward the second chamber 134, it can drive the oil-water mixture in the second chamber 134 into the discharge pipe 74, and then through the discharge pipe 74 into the fuel chamber 72 of the oil-water separation tank 7. The oil-water mixture passes through the aerogel filter membrane 71 to facilitate oil-water separation.

[0034] Aerogel is a unique three-dimensionally arranged nanoporous material characterized by low density, high surface area, and nanoscale pores. Aerogels with an oleophobic and hydrophilic surface, due to their unique wettability, can separate oil and water from oil-water mixtures. Aerogel membranes are preferably made of flexible silica aerogel, which exhibits excellent adsorption and superior oil absorption and hydrophobicity. Compared to traditional aerogels, flexible silica aerogels not only have the advantages of low density and high porosity, but also possess excellent reusability, making them ideal and efficient adsorption materials.

[0035] After the oil and water are separated in this embodiment, the fuel is located in the fuel chamber 72 and the waste water is located in the water chamber 73. The water chamber 73 is connected to the outside through a drain pipe 75. The waste water can be discharged through the drain pipe 75 and the fuel can continue to be used to save energy.

[0036] In one embodiment, see Figure 1The firefighting foam vapor suppression performance measurement and oil recovery device also includes a fuel recovery tank 8, with a pipeline connecting the fuel chamber 72 and the cavity of the fuel cartridge 11. In this embodiment, the fuel recovery tank 8 and the oil-water separator tank 7 are connected by a suction pump 81. The suction pump 8 is capable of sucking the liquid fuel separated from the fuel chamber 72 into the fuel recovery tank 8. The fuel recovery tank 8 is connected to the cavity of the fuel cartridge 11 through a pipeline, so that the recovered liquid fuel can be discharged back into the fuel cartridge 11 for use in a secondary experiment, thereby conserving oil resources.

[0037] In order to better understand the present invention, the following Figures 1 to 2 The technical solution of the present invention is described in detail: The cavity inside the fuel cartridge 11 provided by the present invention can be used to store liquid fuel to be tested. The heat exchange tube 12 is connected to the fuel cartridge 11 and can exchange heat with the fuel cartridge 11, transferring heat to the fuel cartridge 11 and heating the liquid fuel in the cavity to a temperature suitable for actual use. After the heat exchange of the fuel cartridge 11 is completed, the remaining high-temperature liquid can be released into the recovery tank 131, driving the sliding member 135 inside the recovery tank 131 to slide toward the second cavity 134, so that the sliding member 135 slides and performs work to complete a corresponding function, such as pushing the oil-water mixture after the experiment into the oil-water separation tank 7 to facilitate oil-water separation. The separated fuel can be used for secondary experiments. The high-temperature liquid heated by the heat exchange can be reused, which is beneficial for saving energy.

[0038] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A fire-fighting foam vapor suppression performance measurement and oil recovery device, characterized in that: include: a fuel cartridge having a cavity therein for storing fuel; an experimental box, connected to the fuel cartridge; a foam supply box, connected to the experimental box; A concentration sensor is provided on the top wall of the experimental box; The oil-water separation box is provided with an aerogel filter membrane. The aerogel filter membrane separates the interior of the oil-water separation box into a fuel chamber and a water chamber. The fuel chamber is connected to the outlet of the experimental box.

2. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 1 is characterized in that: It also includes a fuel recovery tank, and the fuel recovery tank pipeline is connected to the fuel cavity and the cavity of the fuel cylinder.

3. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 1 is characterized in that: It also includes a glass plate, which is suspended on the top wall of the experimental box and has a plurality of through holes.

4. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 1 is characterized in that: It also includes a nitrogen gas cylinder, and the nitrogen gas cylinder pipeline is connected to the top of the experimental box.

5. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 1 is characterized in that: The fire-fighting foam vapor suppression performance measurement and oil recovery device also includes a heat recovery component, which includes a heat exchange pipe, a recovery box and a sliding part. The heat exchange pipe is arranged in the fuel cylinder and is used to conduct heat to the fuel cylinder. The sliding part is slidably arranged inside the recovery box, and the interior of the recovery box is connected to the heat exchange pipe.

6. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 5 is characterized in that: The sliding member divides the interior of the recovery tank into a first cavity and a second cavity. The first cavity is connected to the heat exchange tube, and the second cavity is connected to the fuel cavity.

7. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 5 is characterized in that: The fuel cylinder includes a heat-insulating shell and a storage box. The storage box is located inside the heat-insulating shell and is provided with the cavity. The heat exchange tube is located inside the heat-insulating shell and is connected to the outer wall of the storage box.

8. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 7, characterized in that: The heat exchange tube is spirally wound around the outer wall of the storage box.

9. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 8, characterized in that: The outer wall of the storage box is provided with a spiral groove, and the heat exchange tube is attached to and fixed in the spiral groove.

10. The firefighting foam vapor suppression performance measurement and oil recovery device according to claim 5, characterized in that: The heat recovery assembly further includes a return pipe, a heating element and a temperature sensor. One end of the return pipe is connected to the inlet of the heat exchange pipe, and the other end of the return pipe is connected to a portion of the heat exchange pipe outside the fuel cylinder.

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