Device for testing fire extinguishing performance of anti-freezing solution

Abstract

The utility model discloses an anti-freezing solution fire extinguishing performance testing device. The device comprises a combustion component, a spraying component, a measuring component and a liquid supply component. The combustion component comprises a fuel spray head, and the fuel spray head sprays fuel to combust to provide a combustion environment for simulating fire occurrence; the spraying part is used for spraying testing liquid, a spraying device of the spraying part is located above the fuel spray head, and the spraying device is a liquid supply spray head; the main body of the measuring part is a calorimetric cover, the calorimetric cover is in a hollow circular truncated cone shape, the calorimetric cover is arranged above the liquid supply nozzle and used for gathering and collecting flue gas and heat after combustion and spraying, and a data acquisition device is arranged on the calorimetric cover and used for acquisition and calculation; and the liquid supply part is connected with the spraying part and is used for providing testing liquid with pressure and flow required by testing for the spraying part. The device has the beneficial effects that the fire extinguishing state of a spraying system in a fire scene is simulated, and various comburent and combustion gas can be simulated; the device has complete capabilities of collecting and evaluating the fire extinguishing effect of the test liquid and various parameters.

Description

Technical Field

[0001] The utility model relates to the field of fire safety, in particular to a device for testing the fire extinguishing performance of antifreeze liquid. Background Art

[0002] Wet-type automatic sprinkler systems are commonly used for fire protection. Especially in cold regions, the water in the system is prone to freezing, necessitating the use of antifreeze to ensure proper system operation. In these situations, the antifreeze must not only effectively prevent freezing but also resist combustion in the event of a fire. This places high demands on the antifreeze formulation.

[0003] Existing antifreeze technology focuses primarily on preventing the fluid in the system from freezing and maintaining the system's effectiveness under fire conditions.

[0004] Simply referring to antifreeze data is not enough to select the right antifreeze. However, since most antifreeze solutions are water-organic solvent mixtures or organic solvents, which are inherently flammable or can become flammable when volatilized during antifreeze release, it is important to test the antifreeze under conditions close to actual use to evaluate its performance or to determine if the developed antifreeze meets the requirements of the fire extinguishing system.

[0005] The development direction of the technology mainly includes optimizing the formula of antifreeze so that it can meet the antifreeze requirements while further reducing its flammability under fire conditions. Now there is an urgent need for a test device that is easy to use and has strong applicability for testing antifreeze. Utility Model Content

[0006] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and to provide an antifreeze fire extinguishing performance testing device that can accurately, quickly and conveniently test the fire extinguishing performance of antifreeze, improve the performance and application range of antifreeze in fire extinguishing systems, and select suitable antifreeze components and ratios.

[0007] The present application provides an antifreeze liquid fire extinguishing performance test device, comprising: a combustion component, a spray component, a measuring component, and a liquid supply component;

[0008] The combustion component includes a fuel nozzle, which sprays fuel to burn and provides a combustion environment when a fire occurs;

[0009] The spray component is used to spray the test liquid. The spray device of the spray component is located above the fuel nozzle, and the spray device is a liquid supply nozzle;

[0010] The measuring component is mainly a calorimetric hood in the shape of a hollow truncated cone. The calorimetric hood is arranged above the liquid supply nozzle and is used to collect the flue gas and heat after combustion and spraying. The calorimetric hood is provided with a data acquisition device for data collection and calculation.

[0011] The liquid supply component is connected to the spray component to provide the spray component with test liquid of the pressure and flow required for the test.

[0012] Furthermore, the combustion component includes a fuel pipe, one end of which is provided with a flange for connecting to a fuel supply assembly;

[0013] The other end of the fuel pipe is provided with a fuel nozzle;

[0014] A combustion net is provided above the fuel nozzle. The function of the combustion net is to stabilize the flame and make the fuel burn fully. At the same time, it can prevent the liquid sprayed by the spray component from dripping directly onto the fuel nozzle and affecting the progress of the experiment.

[0015] Furthermore, a plurality of fuel nozzles are provided, which are arranged in a straight line, staggered or annularly;

[0016] The fuel supply component is a fuel storage tank, a fuel cylinder or municipal gas, and the choice of fuel can be selected according to the simulated fire combustion material.

[0017] Furthermore, the spray component includes a liquid supply pipe, one end of which is provided with a connecting flange for connecting to the liquid supply component, and the other end of the liquid supply pipe is provided with a liquid supply nozzle for spraying the test liquid. The model and setting position of the nozzle are selected and set according to the requirements of the experiment;

[0018] The liquid supply pipe is a hard pipe or a soft pipe.

[0019] Furthermore, the top of the calorimetric hood is connected to an exhaust system to discharge the collected exhaust gas.

[0020] Furthermore, the liquid supply component is connected to the connection flange of the spray component through the liquid supply flange provided on the liquid supply component, so as to provide the spray component with the test liquid of the pressure and flow required for the test.

[0021] The liquid supply component includes a frame. The frame is a rectangular parallelepiped frame structure. In order to facilitate the connection between the liquid supply component and different spray components and to facilitate maintenance or replacement of test liquids, universal wheels are provided at the bottom of the frame. There are four universal wheels, one at each of the four corners of the frame.

[0022] A liquid storage tank is provided on the frame, and an outlet is provided at the lower part of one side of the liquid storage tank for outputting the test liquid, and the outlet is connected to a three-way valve;

[0023] The three-way valve is provided with a first flange, a second flange and a third flange;

[0024] The liquid supply component also includes a liquid supply pump, which is connected to the second flange. By adjusting the parameters of the liquid supply pump, the test liquid with different pressures and flow rates can be provided to the spray component.

[0025] A degassing device is connected after the liquid supply pump. The function of the degassing device is to stabilize the pressure of the equipment system and keep it stable without being disturbed.

[0026] The liquid supply flange connecting the liquid supply component and the spray component is connected to the degassing device.

[0027] Furthermore, an exhaust port and a liquid injection port are provided on the top of the liquid storage tank. The liquid injection port is used to inject the test liquid, and the exhaust port is used to discharge the gas in the liquid storage tank during the liquid injection process to prevent gas explosion.

[0028] The test fluid is antifreeze;

[0029] A liquid level gauge is provided on the side of the liquid storage tank;

[0030] A drain port is provided at the bottom of the liquid storage tank, and a valve is provided on the drain port to control discharge and closing.

[0031] Furthermore, a pressure gauge is provided on the inner side of the liquid supply flange for measuring the supply pressure of the test liquid.

[0032] Furthermore, the three-way valve can connect the first flange to the second flange or the third flange to the second flange through the handle;

[0033] The first flange is used to connect to the outlet of the liquid storage tank;

[0034] The second flange is connected to the liquid supply pump;

[0035] The third flange is connected to a spare liquid storage tank or a water source.

[0036] Furthermore, two passages are provided between the liquid supply flange and the degassing device, both of which can conduct to the liquid supply flange and the degassing device, namely a first passage and a second passage;

[0037] The first passage is provided with a first flow meter and a first valve;

[0038] The second passage is provided with a second flow meter and a second valve;

[0039] The first valve and the second valve are used to close corresponding passages after being opened.

[0040] The antifreeze liquid fire extinguishing performance test device provided by the present application has the following beneficial effects compared with the prior art:

[0041] 1. It can easily simulate the fire extinguishing state of the sprinkler system at the fire scene, and can simulate a variety of combustion materials and combustion gases;

[0042] 2. Have complete ability to collect and evaluate the fire extinguishing effect of the test liquid and various parameters;

[0043] 3. The liquid supply status and type can be adjusted and selected at any time and in a wide range. At the same time, it has a complete monitoring design, which can observe the liquid supply status in real time and has the ability to adjust at any time;

[0044] 4. The experiment has strong adaptability. The modular design of each component makes replacement and maintenance easy. In particular, the design of the liquid supply pipe and liquid supply nozzle can easily simulate various spray heights and spray effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A side view of the overall layout of an antifreeze liquid fire extinguishing performance testing device in one embodiment;

[0047] Figure 2 This is an overall three-dimensional perspective view of an antifreeze liquid fire extinguishing performance test device in one embodiment;

[0048] Figure 3 A schematic diagram of the three-dimensional structure of the liquid supply component in one embodiment Figure 1 ;

[0049] Figure 4 A schematic diagram of the three-dimensional structure of the liquid supply component in one embodiment Figure 2 .

[0050] Reference numerals:

[0051] 1. Frame; 1-1. Universal wheel; 2. Liquid storage tank; 2-1. Exhaust port; 2-2. Liquid filling port; 2-3. Liquid level gauge; 2-4. Liquid drain port;

[0052] 3. Three-way valve; 3-1. First flange; 3-2. Second flange; 3-3. Third flange;

[0053] 4. Liquid supply pump; 5. Air remover; 6. First flow meter; 7. First valve; 8. Second flow meter; 9. Second valve; 10. Pressure gauge; 11. Liquid supply flange;

[0054] 12. Connecting flange; 13. Liquid supply pipe; 14. Liquid supply nozzle; 15. Calorimetric hood; 16. Fuel pipe; 17. Fuel nozzle; 18. Combustion net. DETAILED DESCRIPTION

[0055] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0056] The application scenarios of the antifreeze liquid fire extinguishing performance testing device of the present application and its contribution to the prior art will be described in detail below with reference to the accompanying drawings and embodiments.

[0057] Wet-type automatic sprinkler systems are commonly used for firefighting, especially in cold regions. Water in the system is prone to freezing, necessitating the use of antifreeze to ensure proper system operation. In these situations, the antifreeze must not only effectively prevent freezing but also resist combustion in the event of a fire. This places high demands on the antifreeze formulation.

[0058] Most antifreeze contains organic solvents, which are inherently flammable. Therefore, the antifreeze must be tested under conditions close to actual usage to evaluate its use or to test whether the developed antifreeze meets the requirements of the fire extinguishing system.

[0059] The antifreeze formulation, which incorporates different concentrations of antifreeze components, needs to be measured to validate the scientific nature of the solution. Firefighting performance testing and heat release rate measurements are also required. The antifreeze needs to meet heat release rate requirements, particularly before and after spraying.

[0060] A testing device for testing antifreeze fluid is specially designed which is easy to use and has strong applicability.

[0061] An antifreeze liquid fire extinguishing performance testing device, comprising a combustion component, a spray component, a measuring component, and a liquid supply component;

[0062] The combustion component includes a fuel nozzle 17, which sprays fuel to provide a combustion environment when a fire occurs;

[0063] The combustion component includes a fuel pipe 16, one end of which is provided with a flange for connecting to a fuel supply assembly. The fuel supply assembly can be a fuel storage tank, a fuel gas cylinder or municipal gas. The fuel can be selected according to the simulated fire combustion material, and the fuel can be liquid or gas fuel.

[0064] A fuel nozzle 17 is provided at the other end of the fuel pipe 16 . There are multiple fuel nozzles 17 , which can be arranged in a straight line, a staggered arrangement, or a ring arrangement.

[0065] A combustion net 18 is provided above the fuel nozzle 17. The combustion net 18 can stabilize the flame and make the fuel burn fully. At the same time, it can prevent the liquid sprayed by the spray component from directly dripping onto the fuel nozzle 17 and affecting the progress of the experiment.

[0066] The spraying component sprays the test liquid;

[0067] The spraying device of the spraying component is located above the fuel nozzle 17 , and the spraying device is the liquid supply nozzle 14 .

[0068] The spray component includes a liquid supply pipe 13, one end of which is provided with a connecting flange 12, which is used to connect to the liquid supply component and receive the test liquid. The other end of the liquid supply pipe 13 is provided with a liquid supply nozzle 14, which is used to spray the test liquid. The model and setting position of the nozzle are selected and set according to the requirements of the experiment.

[0069] It should be noted that the liquid supply pipe 13 can be either a rigid pipe or a flexible pipe. The selection of the liquid supply pipe 13 primarily considers pressure resistance and corrosion resistance. Because a fire sprinkler system needs to be simulated, the spray liquid needs to be tested under various experimental conditions, including different spray liquids, spray pressures, and spray flow rates. The antifreeze tested often contains organic solvents, so the corrosiveness of these organic solvents must be considered when selecting the material for the liquid supply pipe 13.

[0070] The setting height of the liquid supply nozzle 14 also needs to be adjusted according to the height of the simulated building. Therefore, the liquid supply pipe 13 is preferably a hose. The liquid supply nozzle 14 can be supported or fixed by a bracket or lifting equipment. The hose is more convenient in adjustment.

[0071] Of course, due to the limitations of fire protection and construction standards, general test high-end is limited to several heights. It is possible to set up several liquid supply pipes 13 with different test condition heights, and the liquid supply nozzles 14 are respectively installed at one end of the liquid supply pipe 13 and fixed above the combustion network 18. The cost is affordable to use the liquid supply pipe 13 at the height.

[0072] The measuring component has a main body of a calorimetric hood 15 in the shape of a hollow frustum. The calorimetric hood 15 is arranged above the liquid supply nozzle 14 and is mainly used to collect the flue gas and heat after combustion and spraying. The calorimetric hood 15 is provided with a data acquisition device, which is used to collect and calculate parameters and data such as temperature, flow rate, and heat release rate. These parameters and data are used to evaluate whether the effect of the test liquid under the test conditions meets the requirements and the performance of the test liquid.

[0073] The top of the calorimetric hood 15 is connected to an exhaust system to discharge the collected exhaust gas.

[0074] The liquid supply component is connected to the connection flange 12 of the spray component through the liquid supply flange 11 provided on the liquid supply component, and provides the spray component with test liquid of the pressure and flow required for the test. The test liquid can be antifreeze, fire extinguishing agent or other functional liquid.

[0075] The liquid supply component includes a frame 1, which is a rectangular frame structure as a whole. In order to facilitate the connection of the liquid supply component with different spray components and facilitate the maintenance or replacement of the test liquid, a universal wheel 1-1 is provided at the bottom of the frame 1. There are four universal wheels 1-1, which are located at the four corners of the frame 1 respectively.

[0076] A liquid storage tank 2 is provided on the frame 1.

[0077] An outlet is provided at the lower part of one side of the liquid storage tank 2 for outputting the test liquid; the outlet is connected to the three-way valve 3.

[0078] The top of the liquid storage tank 2 is provided with an exhaust port 2-1 and a liquid injection port 2-2. The liquid injection port 2-2 is used to inject the test antifreeze liquid, and the exhaust port 2-1 is used to discharge the gas in the liquid storage tank 2 during the liquid injection process to prevent gas explosion.

[0079] In order to facilitate observation of the amount of test liquid injected and prevent leakage, a liquid level gauge 2-3 is provided on the side of the liquid storage tank 2;

[0080] Since the experiment needs to ensure the stability of the liquid supply and the amount of test liquid used in multiple experiments is generally excessive, in order to ensure that it will not affect the ratio of the liquid for the next test, a drain port 2-4 is provided at the bottom of the liquid storage tank 2, and a valve is provided on the drain port 2-4 to control discharge and closing.

[0081] The three-way valve 3 is provided with a first flange 3-1, a second flange 3-2 and a third flange 3-3. The three-way valve 3 can connect the first flange 3-1 with the second flange 3-2 or connect the third flange 3-3 with the second flange 3-2 through a handle.

[0082] The first flange 3-1 is used to connect to the outlet of the liquid storage tank 2.

[0083] The second flange 3-2 is connected to the liquid supply pump 4.

[0084] The third flange 3 - 3 can be connected to the spare liquid storage tank 2 or to a water source.

[0085] The liquid supply pump 4 is connected to the second flange 3 - 2 , and the parameters of the liquid supply pump 4 can be adjusted to provide the spray component with test liquids of different pressures and flow rates.

[0086] In order to ensure the stability of the test conditions and the consistency of the spraying effect, a degassing device 5 is connected after the liquid supply pump 4. The degassing device 5 has the function of stabilizing the pressure and keeping the pressure of the equipment system stable without being disturbed.

[0087] The liquid supply flange 11 connecting the liquid supply component and the spray component is connected to the degassing device 5.

[0088] A pressure gauge 10 is provided inside the liquid supply flange 11 for measuring the supply pressure of the test liquid.

[0089] In order to achieve rapid switching of flow conditions of different orders of magnitude and accurate test data, two passages are further provided between the liquid supply flange 11 and the degassing device 5. Both passages can conduct the liquid supply flange 11 and the degassing device 5, namely the first passage and the second passage;

[0090] The first passage is provided with a first flow meter 6 and a first valve 7;

[0091] The second passage is provided with a second flow meter 8 and a second valve 9;

[0092] The first valve 7 and the second valve 9 are used to close corresponding passages after opening.

[0093] It should be noted that the first flowmeter and the second flowmeter are flowmeters of different ranges installed on two branch pipelines, and the pipelines are switched by a manual valve. This design is because the large-range flowmeter has a large deviation when testing lower flow rates, which has a great impact on the evaluation of the experiment. Therefore, when the flow rate is small, the experiment is switched to a small-range passage.

[0094] One of the test conditions is to spray antifreeze through the spray component, and the effectiveness of the antifreeze is evaluated by recording the heat release rate before and after the antifreeze is sprayed.

[0095] One of the implementation conditions is that the liquid supply nozzle uses an open hanging nozzle, the K coefficient is selected as 10 and 20, and the liquid supply component is installed at one end of the liquid supply pipe to start the liquid supply component.

[0096] Each antifreeze formula was tested under eight different working conditions. Table 1 shows the specific working parameters such as nozzle coefficient, pressure, flow rate, and antifreeze dosage at a height of 1 meter.

[0097] Table 1

[0098]

[0099] The method of using the antifreeze fire extinguishing performance test device is as follows:

[0100] S1. Pour the liquid to be tested into the liquid tank to the appropriate liquid level, select the required test height and liquid supply nozzle, and set the parameters of the liquid supply pump;

[0101] S2. Select appropriate fuel according to the experimental requirements and ignite the fuel nozzle; start the data acquisition equipment on the calorimetric hood;

[0102] S3. Adjust the three-way valve to connect the liquid storage tank and the liquid supply pump, and select the appropriate path according to the required flow and pressure;

[0103] S4. Start the liquid supply pump according to the set time and monitor the pressure gauge and flow meter values ​​to see if they meet the test requirements;

[0104] S5. When the experiment time arrives, turn off the liquid supply pump, turn off the data acquisition equipment, stop supplying fuel, and extinguish the combustion nozzle;

[0105] S6. Open the drain port to release the remaining test liquid in the liquid storage tank, and adjust the three-way valve so that the liquid storage tank and the liquid supply pump are no longer connected.

[0106] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An antifreeze fire extinguishing performance testing device, characterized in that: Including; combustion components, spray components, measurement components, liquid supply components; The combustion component includes a fuel nozzle, which sprays fuel to burn and provides a combustion environment when a fire occurs; The spray component is used to spray the test liquid. The spray device of the spray component is located above the fuel nozzle, and the spray device is a liquid supply nozzle; The measuring component is mainly a calorimetric hood in the shape of a hollow truncated cone. The calorimetric hood is arranged above the liquid supply nozzle and is used to collect the flue gas and heat after combustion and spraying. The calorimetric hood is provided with a data acquisition device for data collection and calculation. The liquid supply component is connected to the spray component to provide the spray component with test liquid of the pressure and flow required for the test.

2. The antifreeze liquid fire extinguishing performance testing device according to claim 1, characterized in that: The combustion component includes a fuel pipe, one end of which is provided with a flange for connecting to a fuel supply assembly; The other end of the fuel pipe is provided with a fuel nozzle; A combustion net is provided above the fuel nozzle. The function of the combustion net is to stabilize the flame and make the fuel burn fully. At the same time, it can prevent the liquid sprayed by the spray component from dripping directly onto the fuel nozzle and affecting the progress of the experiment.

3. The antifreeze liquid fire extinguishing performance testing device according to claim 2, characterized in that: There are multiple fuel nozzles arranged in a straight line, staggered or circular arrangement; The fuel supply component is a fuel storage tank, a fuel cylinder or municipal gas, and the choice of fuel can be selected according to the simulated fire combustion material.

4. The antifreeze liquid fire extinguishing performance testing device according to claim 1, characterized in that: The spray component includes a liquid supply pipe, one end of which is provided with a connecting flange for connecting to the liquid supply component, and the other end of the liquid supply pipe is provided with a liquid supply nozzle for spraying the test liquid. The model and setting position of the nozzle are selected and set according to the requirements of the experiment; The liquid supply pipe is a hard pipe or a soft pipe.

5. The antifreeze liquid fire extinguishing performance testing device according to claim 1, characterized in that: The top of the calorimetric hood is connected to an exhaust system to discharge the collected exhaust gas.

6. The antifreeze liquid fire extinguishing performance testing device according to claim 1, characterized in that: The liquid supply component is connected to the connection flange of the spray component through the liquid supply flange provided on the liquid supply component, and provides the spray component with the test liquid of the pressure and flow required for the test. The liquid supply component includes a frame. The frame is a rectangular parallelepiped frame structure. In order to facilitate the connection between the liquid supply component and different spray components and to facilitate maintenance or replacement of test liquids, universal wheels are provided at the bottom of the frame. There are four universal wheels, one at each of the four corners of the frame. A liquid storage tank is provided on the frame, and an outlet is provided at the lower part of one side of the liquid storage tank for outputting the test liquid, and the outlet is connected to a three-way valve; The three-way valve is provided with a first flange, a second flange and a third flange; The liquid supply component also includes a liquid supply pump, which is connected to the second flange. By adjusting the parameters of the liquid supply pump, the test liquid with different pressures and flow rates can be provided to the spray component. A degassing device is connected after the liquid supply pump. The function of the degassing device is to stabilize the pressure of the equipment system and keep it stable without being disturbed. The liquid supply flange connecting the liquid supply component and the spray component is connected to the degassing device.

7. The antifreeze liquid fire extinguishing performance testing device according to claim 6, characterized in that: The top of the liquid storage tank is provided with an exhaust port and a liquid injection port. The liquid injection port is used to inject the test liquid, and the exhaust port is used to discharge the gas in the liquid storage tank during the liquid injection process to prevent gas explosion; The test fluid is antifreeze; A liquid level gauge is provided on the side of the liquid storage tank; A drain port is provided at the bottom of the liquid storage tank, and a valve is provided on the drain port to control discharge and closing.

8. The antifreeze liquid fire extinguishing performance testing device according to claim 7, characterized in that: A pressure gauge is provided on the inside of the liquid supply flange to measure the supply pressure of the test liquid.

9. The antifreeze liquid fire extinguishing performance testing device according to claim 8, characterized in that: The three-way valve connects the first flange with the second flange through the handle, or the three-way valve connects the third flange with the second flange through the handle; The first flange is used to connect to the outlet of the liquid storage tank; The second flange is connected to the liquid supply pump; The third flange is connected to a spare liquid storage tank or a water source.

10. The antifreeze liquid fire extinguishing performance testing device according to claim 9, characterized in that: Two passages are provided between the liquid supply flange and the degassing device, both of which can conduct to the liquid supply flange and the degassing device, namely a first passage and a second passage; The first passage is provided with a first flow meter and a first valve; The second passage is provided with a second flow meter and a second valve; The first valve and the second valve are used to close corresponding passages after being opened.

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