Fire-fighting equipment fire resistance performance test system, operation distance calculation system and method

Abstract

The invention discloses a fire-fighting equipment fire resistance performance test system and an operation distance calculation system and method, and the system comprises fire-fighting equipment which is used for achieving the circulation of a fire extinguishing medium; the fire simulation device is used for simulating a petrochemical fire; a heat radiation measuring device; the control device is used for adjusting the power of the fire simulation device to enable the fire-fighting equipment to be subjected to heat radiation at different levels and circularly controlling the fire-fighting equipment, and during testing, the critical heat radiation values and time of the fire-fighting equipment under different heat radiation levels are recorded by observing the gasification state of the fire extinguishing medium after circulation; the operation distance calculation device is used for determining the unit area release rate according to the fire scene area of the petrochemical fire, the heat radiation value of the key points around the fire scene and the distance between the fire-fighting equipment and the center of the fire scene so as to analyze the heat radiation distribution state around the fire scene, and based on this, the critical heat radiation value and time of the fire-fighting equipment are combined; and calculating to obtain the operation distance of the fire-fighting equipment.

Description

Technical Field

[0001] The present invention relates to the field of emergency rescue technology in the petrochemical industry, and in particular to a system for testing the fire resistance performance of fire-fighting equipment, and an operating distance calculation system and method. Background Art

[0002] The medium in the petrochemical industry is flammable and explosive. The fire forms in the petrochemical industry are divided into two forms: pool fire and jet fire. Due to the high calorific value of the medium in the petrochemical industry, the thermal radiation released by the petrochemical fire is high, which has a great impact on the surrounding people and equipment.

[0003] At present, the international community has established a rough thermal radiation damage standard for people, common materials and equipment. Among them, the damage standard for people is relatively detailed; the damage standard for equipment or materials mainly includes: the critical thermal radiation of flammable materials (paper or thin wood chips) is 10kW / m 2 , the critical thermal radiation of general materials (such as decorative furniture) is 20kW / m 2 The critical thermal radiation of flame-retardant materials (such as wood boards with a thickness of more than 25 mm) is 40 kW / m 2 , the critical thermal radiation of plastic melting is 12.5kW / m 2 , the critical thermal radiation of steel structure deformation is 25kW / m 2 , and the critical heat radiation for equipment damage is 37.5kW / m 2 .

[0004] However, in actual application, the above damage criteria lack practicality for specific fire-fighting equipment. There are two reasons for this: 1. Most fire-fighting equipment has its own water spray cooling protection, which can improve the fire-fighting equipment's tolerance to thermal radiation; 2. The presence of fluids such as water or foam inside the spray structure of the fire-fighting equipment can play a cooling role, thus also improving the tolerance to thermal radiation.

[0005] At the same time, the existing technology also calculates the thermal radiation around petrochemical fires through calculation formulas or numerical simulation software, but the important parameters in the calculation process: fuel combustion rate, oil combustion calorific value and combustion efficiency (oil heat release rate = combustion rate * calorific value * combustion efficiency) are obtained through previous experiments. Among them, there are many factors that affect the combustion rate, and the combustion area, environmental conditions, etc. will have an impact on the combustion rate; because oil products are mixtures, the oil components used in previous experiments are mostly inconsistent with the oil components in real fire situations; the combustion efficiency is also closely related to the properties of the oil products and the combustion area. Therefore, the heat release rate of the experimental oil is very different from the heat release rate in the real fire situation. If the heat release rate obtained by previous experiments is used to calculate the thermal radiation around the real fire, it will lead to a large error.

[0006] In the prior art, although some technologies consider using the test data of the fire scene for back calculation, they do not consider the problem that the heat release rate per unit area changes in real time with environmental conditions (the burning rate is greatly affected by wind speed). Therefore, it is necessary to monitor and back calculate in real time, and then calculate the real-time heat release rate per unit area.

[0007] In summary, the prior art needs to provide a solution that can measure the actual fire resistance performance of fire-fighting equipment, as well as a technical solution that comprehensively considers factors such as the heat release rate of real oil fires, the surrounding thermal radiation intensity, and the actual fire resistance performance of fire-fighting equipment, so as to accurately determine the operating distance of fire-fighting equipment. Summary of the invention

[0008] The purpose of the present invention is to propose a technical solution that can solve the problem of actual fire resistance performance of existing fire-fighting equipment and / or the problem of not considering the actual fire resistance performance of fire-fighting equipment and inaccurate distribution of surrounding heat radiation when determining the operating distance of fire-fighting equipment.

[0009] In order to solve the above technical problems, an embodiment of the present invention provides a system for testing the fire resistance performance of fire-fighting equipment, comprising: fire-fighting equipment, which is used to realize the circulation of fire-extinguishing medium; a fire simulation device, which is arranged at the front end of the fire-fighting equipment, and is used to simulate petrochemical fires; a thermal radiation measuring device, which is arranged between the fire-fighting equipment and the fire simulation device, and is used to measure in real time the thermal radiation value to which the fire-fighting equipment is subjected during the simulated fire; a control device, which is used to make the fire-fighting equipment subjected to different levels of thermal radiation by adjusting the power of the fire simulation device, and to perform circulation control on the fire-fighting equipment, wherein during the test, the critical thermal radiation value and time of the fire-fighting equipment at different thermal radiation levels are recorded by observing the gasification state of the fire-extinguishing medium after circulation.

[0010] Preferably, the fire-fighting equipment includes: a medium injection channel, which is used to inject fire-extinguishing medium into the circulation loop; a medium state observation channel, which is connected to the outlet end of the medium injection channel and is used to spray the injected fire-extinguishing medium into the internal observation pool; a medium cooling channel, which is connected to the outlet end of the medium state observation channel and forms the circulation loop with the medium state observation channel, and is used to cool the fire-extinguishing medium so as to transport the cooled fire-extinguishing medium to the inlet of the medium state observation channel.

[0011] Preferably, the medium injection channel includes: a fire water injection pipeline, which includes a fire water tank and a fire water pump arranged at the rear end of the fire water tank; a foam injection pipeline, which includes a foam liquid tank and a foam liquid pump arranged at the rear end of the foam liquid tank; a mixer, which is connected to the outlets of the fire water pump and the foam liquid pump at the same time; and a medium generator, which is arranged at the rear end of the mixer.

[0012] Preferably, the medium injection channel further comprises: a first valve disposed at the rear end of the medium generator, wherein the first valve is used to control the on-off state between the medium injection channel and the circulation loop.

[0013] Preferably, the medium cooling channel comprises: a circulating water pump and a circulating compressor connected to the outlet of the observation pool at the same time; and a cooling device arranged at the rear ends of the circulating water pump and the circulating compressor.

[0014] Preferably, the medium cooling channel also includes: a second valve arranged between the circulating water pump and the observation pool, the second valve being used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of fire water; and a third valve arranged between the circulating compressor and the observation pool, the third valve being used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of fire foam.

[0015] Preferably, the medium state observation channel comprises: an injection device, which is arranged at the inlet end of the medium state observation channel; and an observation pool, which is arranged at the rear end of the injection device.

[0016] Preferably, the control device carries out the fire resistance performance test of the fire fighting equipment according to the following steps: S1, controlling the connection between the medium injection channel and the medium state observation channel, and the connection between the medium state observation channel and the medium cooling channel, and controlling the opening of the pump matching the target fire extinguishing medium, so that the target fire extinguishing medium is sprayed from the medium injection channel to the observation pool in the medium state observation channel, and then the target fire extinguishing medium is cooled by the medium cooling channel and transported to the entrance of the medium state observation channel; S2, controlling the disconnection between the medium injection channel and the medium state observation channel, so as to realize the circulation of the target fire extinguishing medium; S3, adjusting the working power of the fire simulation device so that the heat radiation value received by the fire fighting equipment reaches the experimental heat radiation value, and recording the cycle time in real time; S4, observing the state of the target fire extinguishing medium sprayed out in real time, and detecting whether it reaches the gasification state, so as to determine the critical heat radiation value and critical time corresponding to the current experimental heat radiation value when the gasification state is reached.

[0017] Preferably, the system for testing the fire resistance performance of fire-fighting equipment also includes: a sprinkler device, which is arranged between the thermal radiation measuring device and the fire-fighting equipment, and is used to simulate the sprinkler state of a petrochemical fire, wherein the control device is also used to control the start and stop and sprinkler flow of the sprinkler device, so as to record the critical thermal radiation value and time of the fire-fighting equipment under different thermal radiation levels and different sprinkler flow level combinations during the test.

[0018] On the other hand, an embodiment of the present invention provides a method for testing the fire resistance performance of fire-fighting equipment, and the method for testing the fire resistance performance of fire-fighting equipment is implemented using the system for testing the fire resistance performance of fire-fighting equipment as described above, including: arranging a thermal radiation measuring device and a fire simulation device at the front end of the fire-fighting equipment, respectively, wherein the thermal radiation measuring device is arranged between the fire-fighting equipment and the fire simulation device; the fire-fighting equipment is cyclically controlled by a control device, and the fire-fighting equipment is subjected to different levels of thermal radiation by adjusting the power of the fire simulation device; in the process of carrying out the fire resistance performance test of the fire-fighting equipment, the control device records the critical thermal radiation value and time of the fire-fighting equipment at different thermal radiation levels by observing the gasification state of the fire extinguishing medium.

[0019] In addition, an embodiment of the present invention also provides a system for calculating the operating distance of fire-fighting equipment, including: an operating distance calculation device, which is used to determine the release rate per unit area based on the fire area of ​​the actual petrochemical fire, the thermal radiation value of key points around the fire scene, and the distance between the fire-fighting equipment and the center of the fire scene, so as to analyze the thermal radiation distribution state around the fire scene, and based on this, combined with the critical thermal radiation value and time of the fire-fighting equipment that match the current thermal radiation state of the fire scene, the operating distance of the fire-fighting equipment is calculated, wherein the critical thermal radiation value and time of the fire-fighting equipment that match the current thermal radiation state of the fire scene are extracted from the test results obtained in the system for testing the fire resistance performance of fire-fighting equipment as described above.

[0020] Preferably, the operating distance calculation device includes: a fire area monitoring device, which is used to measure the fire area; a fire perimeter thermal radiation measuring device, which is used to measure the real-time thermal radiation of key points around the fire; a computing terminal, which is connected to the fire area monitoring device and the fire perimeter thermal radiation measuring device, and is used to analyze the operating distance of the fire-fighting equipment based on the fire area, the real-time thermal radiation and the critical thermal radiation value and time of the fire-fighting equipment.

[0021] Preferably, the system for calculating the operating distance of firefighting equipment can be applied to the layout of firefighting equipment at a fire rescue site.

[0022] In addition, an embodiment of the present invention also provides a method for calculating the operating distance of fire-fighting equipment, which is implemented using the system for calculating the operating distance of fire-fighting equipment as described above, wherein the method for calculating the operating distance of fire-fighting equipment includes: determining the release rate per unit area based on the fire area of ​​an actual petrochemical fire, the thermal radiation values ​​of key points around the fire, and the distance between the fire-fighting equipment and the center of the fire; analyzing the thermal radiation distribution state around the fire based on the release rate per unit area; calculating the operating distance of the fire-fighting equipment based on the thermal radiation distribution state around the fire, combined with the critical thermal radiation value and time of the fire-fighting equipment that match the current thermal radiation state of the fire scene, wherein the critical thermal radiation value and time of the fire-fighting equipment that match the current thermal radiation state of the fire scene are extracted from the test results obtained from the fire resistance performance test of the fire-fighting equipment, including the critical thermal radiation values ​​and times at different thermal radiation levels.

[0023] Preferably, the method for calculating the operating distance of firefighting equipment can be applied to the layout of firefighting equipment at a fire rescue site.

[0024] Compared with the prior art, one or more embodiments of the above scheme may have the following advantages or beneficial effects:

[0025] The present invention proposes a fire resistance performance testing system, an operation distance calculation system and a method for fire fighting equipment. The present invention establishes a fire resistance performance testing system for fire fighting equipment, realizes a long-term fire resistance test of the injection system, obtains the real fire resistance characteristics, and based on the real-time measurement of the fire scene area and local thermal radiation monitoring data of the fire scene, uses a thermal radiation calculation model to obtain the real-time unit area heat release rate of the fire, and then combines the fire resistance characteristics of the fire fighting equipment to calculate the real-time global thermal radiation distribution characteristics of the fire scene. In this way, the present invention can measure the fire resistance performance of fire fighting equipment in combat conditions, and obtain the operation distance of fire fighting equipment based on real-time thermal radiation data, so as to effectively guide the operation of fire fighting equipment, avoid the situation that the fire fighting equipment is burned due to being too close to the fire scene, and the fire fighting equipment is too far away from the fire scene and cannot effectively extinguish the fire, etc., solves the problem that the actual fire resistance performance of the fire fighting equipment and / or the inaccurate distribution of the surrounding thermal radiation are not considered in the existing determination of the operation distance of fire fighting equipment, so as to make the operation distance of the fire fighting equipment more accurate and more conducive to the performance of the fire fighting equipment.

[0026] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of a system for testing the fire resistance performance of firefighting equipment according to an embodiment of the present application.

[0029] Figure 2 This is a schematic diagram of the specific structure of a system for testing the fire resistance performance of firefighting equipment according to an embodiment of the present application.

[0030] Figure 3 This is a schematic diagram of the steps of a method for testing the fire resistance performance of firefighting equipment according to an embodiment of the present application.

[0031] Figure 4 This is a schematic diagram of the overall structure of a system for calculating the operating distance of firefighting equipment according to an embodiment of the present application.

[0032] Figure 5 This is a schematic diagram of the steps of a method for calculating the operating distance of firefighting equipment according to an embodiment of the present application.

[0033] Figure 6 It is a schematic diagram of the overall process of calculating the operating distance in the method for calculating the operating distance of fire-fighting equipment in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0035] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that here.

[0036] The terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "one", "one" and "item" used herein are also intended to include plural numbers. It should also be understood that the terms "include" and / or "comprise" used herein specify the existence of stated features, integers, steps, operations, units and / or components, without excluding the existence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0037] Fire accidents frequently occur in the petrochemical industry due to the flammable and explosive properties of the medium. There are two types of fires in the petrochemical industry: pool fire and jet fire. Due to the high calorific value of the medium in the petrochemical industry, the thermal radiation released by petrochemical fires is high, which has a great impact on the surrounding people and equipment.

[0038] At present, the international community has established a rough thermal radiation damage standard for people, common materials and equipment. Among them, the damage standard for people is relatively detailed; the damage standard for equipment or materials mainly includes: the critical thermal radiation of flammable materials (paper or thin wood chips) is 10kW / m 2 , the critical thermal radiation of general materials (such as decorative furniture) is 20kW / m 2 The critical thermal radiation of flame-retardant materials (such as wood boards with a thickness of more than 25 mm) is 40 kW / m 2 , the critical thermal radiation of plastic melting is 12.5kW / m 2 , the critical thermal radiation of steel structure deformation is 25kW / m 2 , and the critical heat radiation for equipment damage is 37.5kW / m 2 .

[0039] However, in actual application, the above damage criteria lack practicality for specific fire-fighting equipment. There are two reasons for this: 1. Most fire-fighting equipment has its own water spray cooling protection, which can improve the fire-fighting equipment's tolerance to thermal radiation; 2. The presence of fluids such as water or foam inside the spray structure of the fire-fighting equipment can play a cooling role, thus also improving the tolerance to thermal radiation.

[0040] At the same time, the existing technology also calculates the thermal radiation around petrochemical fires through calculation formulas or numerical simulation software, but the important parameters in the calculation process: fuel combustion rate, oil combustion calorific value and combustion efficiency (oil heat release rate = combustion rate * calorific value * combustion efficiency) are obtained through previous experiments. Among them, there are many factors that affect the combustion rate, and the combustion area, environmental conditions, etc. will have an impact on the combustion rate; because oil products are mixtures, the oil components used in previous experiments are mostly inconsistent with the oil components in real fire situations; the combustion efficiency is also closely related to the properties of the oil products and the combustion area. Therefore, the heat release rate of the experimental oil is very different from the heat release rate in the real fire situation. If the heat release rate obtained by previous experiments is used to calculate the thermal radiation around the real fire, it will lead to a large error.

[0041] In the prior art, although some technologies consider using the test data of the fire scene for back calculation, they do not consider the problem that the heat release rate per unit area changes in real time with environmental conditions (the burning rate is greatly affected by wind speed). Therefore, it is necessary to monitor and back calculate in real time, and then calculate the real-time heat release rate per unit area.

[0042] In summary, the prior art needs to provide a solution that can measure the actual fire resistance performance of fire-fighting equipment, as well as a technical solution that comprehensively considers factors such as the heat release rate of real oil fires, the surrounding thermal radiation intensity, and the actual fire resistance performance of fire-fighting equipment, so as to accurately determine the operating distance of fire-fighting equipment.

[0043] In order to solve the technical problems in the above-mentioned background technology, the embodiments of the present application propose a fire resistance performance testing system, an operation distance calculation system and method for fire fighting equipment. The scheme obtains the fire resistance value of the fire fighting equipment by conducting a fire resistance test on the fire fighting equipment; by real-time monitoring of the fire burning area and heat radiation data, the real-time burning area and heat release rate per unit area are obtained by reverse calculation, and finally the real-time heat radiation distribution around the fire scene is obtained; finally, combined with the fire fighting equipment's heat radiation tolerance value, the safe operation distance of the fire fighting equipment around the fire scene is obtained.

[0044] Embodiment 1

[0045] Figure 1 Schematic diagram of the overall structure of the system for testing the fire resistance performance of fire fighting equipment according to the embodiment of the present application. Figure 1 As shown, the system for testing the fire resistance performance of fire-fighting equipment (also referred to as "fire-fighting equipment fire resistance performance testing system") described in an embodiment of the present invention includes: fire-fighting equipment (unnumbered), a fire simulation device 1, a thermal radiation measuring device 201 and a control device (unnumbered).

[0046] The fire fighting equipment is used to realize the circulation of the fire extinguishing medium. In the embodiment of the present invention, the fire extinguishing medium is fire fighting water or fire fighting foam.

[0047] The fire simulation device 1 is arranged at the front end of the fire fighting equipment. The fire simulation device 1 is used to simulate a petrochemical fire. By adjusting the power of the fire simulation device 1, it can spray out a pool fire or a jet fire in a petrochemical operation scene to simulate a fire scene in a petrochemical scene.

[0048] The thermal radiation measuring device 201 is arranged between the fire fighting equipment and the fire simulation device 1, that is, the thermal radiation measuring device 201 is arranged close to the front end of the fire fighting equipment. The thermal radiation measuring device 201 is used to measure the real-time thermal radiation value received by the fire fighting equipment when simulating a petrochemical fire.

[0049] The control device is mainly used to make the fire-fighting equipment receive different levels of heat radiation by adjusting the power of the fire simulation device 1, and can also control the circulation of the fire-fighting equipment. In the process of testing the fire resistance performance of the fire-fighting equipment, the control device observes the gasification state of the fire-extinguishing medium after the circulation in real time, and records the critical heat radiation value and critical time of the fire-fighting equipment at different heat radiation levels by observing the gasification state of the fire-fighting medium after the circulation.

[0050] Specifically, the control device first controls the fire-fighting device to start the circulation of the fire-extinguishing medium, and controls the fire simulation device 1 to reach the corresponding experimental thermal radiation level, and then observes the medium state after the circulation of the fire-extinguishing medium (i.e., whether the current medium is gasified) in real time, so that when the medium gasification is identified, the thermal radiation value of the fire-fighting device under the current experimental thermal radiation level and the duration of the circulation of the fire-extinguishing medium are recorded, which are used as the corresponding critical thermal radiation value and critical time. In this way, the present invention can continuously measure the critical thermal radiation value and critical time of the fire-fighting equipment under different thermal radiation levels under the action of the control device.

[0051] Figure 2 This is a schematic diagram of the specific structure of the system for testing the fire resistance performance of fire fighting equipment according to the embodiment of the present application. Figure 2 , the specific structure of the fire resistance performance testing system for fire fighting equipment described in the embodiment of this invention is explained.

[0052] like Figure 2 The fire fighting equipment includes: a medium injection channel, a medium state observation channel and a medium cooling channel. The outlet end of the medium injection channel is connected to the inlet end of the medium state observation channel, the outlet end of the medium state observation channel is connected to the inlet end of the medium cooling channel, and the outlet end of the medium cooling channel is connected to the connecting pipeline between the medium injection channel and the medium state observation channel through a circulation pipeline.

[0053] In the embodiment of the present invention, the medium cooling channel and the medium state observation channel together form a circulation loop, wherein the medium state observation channel is located at the initial section of the circulation loop.

[0054] The medium injection channel is used to inject the fire extinguishing medium into the circulation loop. The medium state observation channel is used to spray the injected fire extinguishing medium into the internal observation pool. The medium cooling channel is used to cool the fire extinguishing medium so as to transport the cooled fire extinguishing medium to the inlet of the medium state observation channel.

[0055] In one embodiment, the medium injection channel includes: a fire water injection pipeline, a foam injection pipeline, a mixer 8 and a medium generator 9. The fire water injection pipeline includes: a fire water tank 4 and a fire water pump 6 arranged at the rear end of the fire water tank 4. The foam injection pipeline includes a foam liquid tank 5 and a foam liquid pump 7 arranged at the rear end of the foam liquid tank 5. The mixer 8 is connected to the outlet of the fire water pump 6 and the outlet of the foam liquid pump 7 at the same time. The mixer 8 is a fire foam proportioning mixer. The medium generator 9 is arranged at the rear end of the mixer 8. The medium generator 9 is a foam generator. In addition, the medium injection channel also includes: a first valve 101. The first valve 101 is arranged at the rear end of the medium generator 9. The first valve 101 is used to control the on-off state between the medium injection channel and the circulation loop (medium state observation channel).

[0056] In one embodiment, the medium state observation channel includes: an injection device 11 and an observation pool 12. The injection device 11 is arranged at the inlet end of the medium state observation channel. The injection device 11 is used to inject the target fire extinguishing medium (fire water or fire foam) injected from the medium injection channel into the observation pool 12. The observation pool 12 is arranged at the rear end of the injection device 11. The observation pool 12 (a fire water pool or a fire foam pool) is used to hold the circulating target fire extinguishing medium used to observe the gasification state of the medium during the fire resistance test of the fire fighting equipment.

[0057] In one embodiment, the medium cooling channel includes: a circulating water pump 13, a circulating compressor 14 and a cooling device 15. The circulating water pump 13 is connected to the outlet of the observation pool, and the circulating compressor 15 is also connected to the outlet of the observation pool 12. The cooling device 15 is arranged at the rear end of the circulating water pump 13 and the circulating compressor 14. In addition, the medium cooling channel also includes: a second valve 102 and a third valve 103. The second valve 102 is arranged between the circulating water pump 13 and the observation pool 12. The third valve 103 is arranged between the circulating compressor 14 and the observation pool 12. The second valve 102 is used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of the fire water. The third valve 103 is used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of the fire foam.

[0058] In addition, if Figure 2As shown, the fire resistance performance testing system for fire-fighting equipment described in the embodiment of the present invention also includes: a spray device 3. The spray device 3 is arranged between the thermal radiation measuring device 201 and the fire-fighting equipment. The spray device 3 is used to simulate the spraying state at the petrochemical fire scene. In the embodiment of the present invention, the control device is also used to control the start and stop of the spray device 3 and the spray flow rate. Before the fire resistance performance test of the fire-fighting equipment begins, the control device will also control the start and stop of the spray device 3 according to the experimental needs, and adjust the spray flow rate required for the experiment after starting. Therefore, the control device will record the critical thermal radiation value and critical time of the fire-fighting equipment under different thermal radiation levels and different spray flow rate level combinations during the fire resistance performance test of the fire-fighting equipment.

[0059] In the embodiment of the present invention, the control device can dynamically control the fire resistance performance test process of the fire fighting equipment, and carry out the fire resistance performance test of the fire fighting equipment according to the following steps:

[0060] Step S1, control the connection between the medium injection channel and the medium state observation channel, and the connection between the medium state observation channel and the medium cooling channel, and control the opening of the pump matching the target fire extinguishing medium, so that the target fire extinguishing medium is sprayed from the medium injection channel to the observation pool in the medium state observation channel, and then the target fire extinguishing medium is cooled by the medium cooling channel and transported to the entrance of the medium state observation channel; then, step S2, control the disconnection between the medium injection channel and the medium state observation channel, so as to realize the circulation of the target fire extinguishing medium.

[0061] Specifically, in the embodiment of the present invention, before the test is carried out using the fire resistance performance testing system for fire fighting equipment, the circulation of the target fire extinguishing medium (fire fighting water or fire fighting foam) can be started under the control of the control device.

[0062] For water spray fire fighting equipment, the control device controls the opening of valves 101 and 102, and then controls the opening of the fire fighting equipment water pump 6 to pump out the fire fighting water in the fire fighting equipment water tank 4. The fire fighting water passes through the fire fighting equipment foam proportioning mixer 8 and the fire fighting equipment foam generator 9, passes through valve 101, and enters the fire fighting equipment injection device 11. After passing through 11, the fire fighting water enters the fire fighting water / foam pool 12, and then passes through valve 102 to enter the circulating water pump 13. After controlling the circulating water pump 13 to open, the fire fighting water passes through the circulating water pump 13 and enters the cooling device 15, thereby realizing the cooling of the fire fighting water. Finally, it enters the pipeline between the pipeline valve 101 and the fire fighting equipment injection device 11 through the circulation pipeline. At this time, the fire fighting equipment water pump 6 and valve 101 are controlled to be closed, thereby realizing the circulation control of the fire fighting water.

[0063] For the foam spraying fire-fighting equipment, the control device controls the valve 101 and the valve 103 to open, and then controls the fire-fighting equipment fire-fighting water pump 6 and the fire-fighting equipment foam liquid pump 7 to open, so as to extract the fire-fighting water in the fire-fighting equipment water tank 4 and the foam liquid in the fire-fighting equipment foam liquid tank 5, and realize the mixing of the fire-fighting water and the foam liquid in the fire-fighting equipment foam proportioning mixer 8. The mixed foam liquid flows through the fire-fighting equipment foam generator 9 to foam to form foam, and then passes through the fire-fighting equipment injection device 11 and is sprayed into the fire-fighting water / foam pool 12, and then passes through the valve 103 and enters the circulating air compressor 14. After the circulating air compressor 14 is controlled to open, the circulating air compressor is pressurized and enters the cooling device 15, thereby realizing the cooling of the fire-fighting foam. Finally, it enters the pipeline between the pipeline valve 101 and the fire-fighting device injection device 11 through the circulation pipeline. At this time, the fire-fighting equipment water pump 6, the fire-fighting equipment foam liquid pump 7 and the valve 101 are controlled to be closed, thereby realizing the circulation of the fire-fighting foam.

[0064] After the circulation control of fire-fighting water or fire-fighting foam is realized, a water spray device 3 and a thermal radiation measuring device 201 are arranged in front of the fire-fighting equipment, and a fire simulation device 1 is arranged in front of the thermal radiation measuring device.

[0065] Step S3: The control device adjusts the working power of the fire simulation device 1 so that the heat radiation value received by the fire-fighting equipment reaches the experimental heat radiation value, and records the cycle time in real time. According to the test requirements, the control device can adjust the power of the fire simulation device 1, so as to measure the heat radiation received by the fire-fighting equipment through the heat radiation measurement system 201 until the experimental requirements are met.

[0066] It should be noted that the control device can also turn on or off the spray device 3, and adjust the spray device 3 after turning it on, so that the spray flow rate of the spray device 3 meets the experimental requirements.

[0067] Finally, in step S4, the control device observes the state of the target fire extinguishing medium sprayed out in real time, and detects whether it reaches the gasification state, so as to determine the critical thermal radiation value and critical time corresponding to the current experimental thermal radiation value when the gasification state is reached.

[0068] Specifically, the control device adjusts the power of the fire simulation device 1 so that the heat radiation value received by the fire-fighting equipment reaches the experimental heat radiation value, and then maintains it unchanged, controls the circulation of the fire-fighting water / foam, records the working time T of the fire-fighting equipment as the circulation time, observes the outlet of the fire-fighting equipment spray device 11 entering the fire-fighting water / foam pool 12, and observes whether the fire-fighting water / foam is vaporized at time T; thereafter, the experimental heat radiation values ​​received by the fire-fighting equipment are changed multiple times at different levels, so as to record the heat radiation at which the fire-fighting water / foam begins to vaporize as the critical heat radiation. In this way, the real fire resistance performance of the fire-fighting equipment can be obtained.

[0069] It should be noted that the control device described in the embodiment of the present invention can observe the gasification state of the fire extinguishing medium in the observation pool 12 in a variety of ways. It can collect real-time images and identify the gasification state through image detection technology, or set up a gas sensor or other measuring equipment for direct measurement. It can also obtain the gasification state indication instruction input by the user through the observation of on-site staff. Those skilled in the art can make settings according to actual needs, and the present invention does not make specific limitations on this.

[0070] In this way, the embodiments of the present invention can utilize the above-mentioned fire-fighting equipment fire resistance performance testing system and its implementation method to implement fire resistance performance testing of foam or water fire-fighting equipment under continuous circulation conditions of foam or water, thereby truly obtaining the limit value and limit time of the fire-fighting equipment's tolerance to thermal radiation.

[0071] Embodiment 2

[0072] Based on the fire resistance performance testing system for firefighting equipment provided in the first embodiment, the present invention also provides a method for testing the fire resistance performance of firefighting equipment (also referred to as "fire resistance performance testing method for firefighting equipment"). The fire resistance performance testing method for firefighting equipment is implemented according to the fire resistance performance test for firefighting equipment described above.

[0073] Figure 3 This is a schematic diagram of the steps of the method for testing the fire resistance performance of fire fighting equipment according to an embodiment of the present application. Figure 3 As shown, the fire resistance performance testing method of fire fighting equipment according to the embodiment of the present invention comprises the following steps:

[0074] Step S301, arranging a thermal radiation measuring device 201 and a fire simulation device 1 at the front end of the fire fighting equipment, wherein the thermal radiation measuring device 201 is arranged between the fire fighting equipment and the fire simulation device 1;

[0075] Step S302: the control device performs cyclic control on the fire-fighting equipment, and adjusts the power of the fire simulation device 1 so that the fire-fighting equipment is subjected to different levels of heat radiation;

[0076] Step S303: During the fire resistance performance test of the fire fighting equipment, the control device records the critical heat radiation value and time of the fire fighting equipment at different heat radiation levels by observing the gasification state of the fire extinguishing medium.

[0077] Embodiment 3

[0078] Based on the above-mentioned embodiment 1, embodiment 2 of the present invention further provides a system for calculating the operating distance of fire-fighting equipment (also referred to as an "operating distance calculation system"). Figure 4This is a schematic diagram of the overall structure of a system for calculating the operating distance of firefighting equipment according to an embodiment of the present application.

[0079] like Figure 4 As shown, the operation distance calculation system described in the embodiment of the present invention includes: an operation distance calculation device.

[0080] The operating distance calculation device is used to determine the release rate per unit area according to the fire area of ​​the actual petrochemical fire (occurring), the heat radiation value of key points around the fire, and the distance between the fire equipment and the center of the fire, so as to analyze the heat radiation distribution state around the fire, and then, according to the heat radiation distribution state around the fire, combined with the critical heat radiation value and critical time of the fire equipment that match the heat radiation state of the fire equipment use site at the current fire scene, calculate the operating distance of the fire equipment. In this way, the operating distance of the fire equipment described in the embodiment of the present invention can match the critical heat radiation value and critical time of the fire equipment that meet the actual on-site heat radiation conditions according to the actual heat radiation distribution state of the fire scene, so as to calculate the operating distance that meets the actual on-site demand conditions.

[0081] Among them, in this embodiment 2, the critical thermal radiation value and critical time of the fire-fighting equipment that match the current thermal radiation state of the fire scene are extracted from the test results obtained in the fire-fighting equipment fire resistance performance testing system described in the above embodiment 1.

[0082] In addition, in another embodiment, the operation distance calculation system may also include the fire-fighting equipment fire resistance performance testing system as described in the above-mentioned embodiment 1.

[0083] In addition, the operation distance calculation system described in the embodiment of the present invention can be applied to the layout of firefighting equipment at a fire rescue site.

[0084] like Figure 4 As shown, specifically, the operation distance calculation device includes: a fire area monitoring device 16 , a fire scene periphery thermal radiation measuring device 17 and a calculation terminal 18 .

[0085] The fire area monitoring device 16 is used to measure the fire area in real time. The fire surrounding thermal radiation measuring device 17 is mainly used to measure the real-time thermal radiation of key points at different positions around the fire. The computing terminal 18 is connected to the fire area monitoring device 16 and the fire surrounding thermal radiation measuring device 17 at the same time.

[0086] The computing terminal 18 is used to analyze the operating distance of the fire fighting equipment according to the real-time measured fire scene area, the real-time heat radiation of different locations, and the critical heat radiation value and time of the fire fighting equipment. The computing terminal 18 is embedded with a heat radiation calculation model or software.

[0087] like Figure 6As shown, in the process of calculating the operating distance, first, the fire area monitoring device 16 measures the fire area S in real time, and the fire surrounding thermal radiation measuring device 17 measures the thermal radiation value R of multiple positions around the fire in real time; then, based on these real-time measurement data, combined with the distance L between the fire-fighting equipment and the center of the fire, through the thermal radiation calculation model or software 19 in the calculation terminal 18, the heat release rate per unit area of ​​the fire can be inversely calculated through the known fire area S, surrounding thermal radiation R and distance L from the center of the fire; then, the thermal radiation distribution state of the space around the fire is calculated; finally, according to the thermal radiation distribution state of the space around the fire, combined with the fire resistance performance of the fire-fighting equipment (the critical thermal radiation value and critical time of the fire-fighting equipment), the operating distance of the fire-fighting equipment can be calculated.

[0088] In this way, the present invention can obtain the operating distance of the fire-fighting equipment based on the measured fire-resistant performance of the fire-fighting equipment in combat conditions and the real-time thermal radiation data based on the fire scene.

[0089] Embodiment 4

[0090] Based on the above-mentioned second embodiment, a first embodiment of a fire-fighting equipment operation distance calculation system is provided, comprising: a fire-fighting equipment fire resistance characteristic testing system and a fire scene periphery heat radiation and operation distance calculation system.

[0091] The fire-fighting equipment fire-resistance property testing system includes: a fire simulating system 1 (the system 1 can be implemented by referring to the existing patent document "Testing system for fire-resistance property of petrochemical components"), a thermal radiation measuring system 201, a water sprinkler system 3, a fire-fighting equipment water tank 4, a fire-fighting equipment foam liquid tank 5, a fire-fighting equipment water pump 6, a fire-fighting equipment foam liquid pump 7, a fire-fighting equipment foam proportioning mixer 8, a fire-fighting equipment foam generator 9, a pipeline valve 101, a fire-fighting equipment injection device 11, a fire-fighting water / foam pool 12, a pipeline valve 102, a pipeline valve 103, a circulating water pump 13, a circulating compressor 14, a cooling device 15, etc.

[0092] In the process of implementing the fire resistance performance test of fire fighting equipment, the above system can be used to implement the fire resistance performance test of foam / water fire fighting equipment under the condition of continuous foam / water circulation, and truly obtain the limit value and time of the fire fighting equipment's tolerance to thermal radiation.

[0093] For the fire water monitor, the rated flow rate is 100L / s and the rated pressure is 0.8MPa. Open valve 101, open valve 102, open the fire equipment water pump 6, pump out the fire water in the fire equipment water tank 4, and the fire water passes through the fire equipment foam proportioning mixer 8 and the fire equipment foam generator 9, and enters the fire equipment injection device 11 through valve 101. After passing through 11, the fire water enters the fire water / foam pool 12, and then passes through valve 102 to enter the circulating water pump 13. Turn on the circulating water pump 13, and the fire water passes through the circulating water pump 13 to enter the cooling device 15 to achieve the cooling of the fire water, and enters the pipeline between the pipeline valve 101 and the fire equipment injection device 11 through the circulation pipeline. At this time, close the fire equipment water pump 6 and valve 101 to achieve the circulation of the fire water.

[0094] After the fire water / foam circulation is realized, the thermal radiation measurement system 201 and the simulated fire system 1 are arranged in front of the thermal radiation measurement system.

[0095] According to the test requirements, the power of the simulated fire system 1 is adjusted, and the heat radiation received by the fire fighting equipment is measured by the heat radiation measurement system 201, so that the measured value is 30kW / m 2 , and then keep it unchanged, let the fire water / foam circulate, cancel the working time of the fire protection equipment 2h as the circulation time, observe the outlet of the fire monitor 11 entering the fire water / foam pool 12, at 2h, the fire water / foam has not been gasified; according to 0.5kW / m 2 Increase the intervals gradually, gradually increase the heat radiation generated by the fire system, and repeat the test to see if it is gasified, until 39kW / m 2 When the water starts to vaporize, the fire fighting equipment can withstand a heat radiation of 39kW / m 2 .

[0096] The fire surrounding thermal radiation and operation distance calculation system includes: a fire area monitoring device 16, a fire surrounding thermal radiation measurement system 17 and a calculation terminal 18. The calculation terminal 18 is embedded with a thermal radiation calculation model or software.

[0097] The fire area monitoring device 16 measures the fire area S in real time, and the peripheral heat radiation measuring device measures the real-time heat radiation value R of multiple points around the fire and the distance L from the center of the fire in real time. Through the heat radiation calculation model or software in the calculation terminal 18, the heat release rate per unit area of ​​the fire can be calculated by reverse calculation if the fire area S, the peripheral heat radiation R and the distance L from the center of the fire are known, and then the heat radiation distribution of the space around the fire can be calculated by forward calculation; finally, combined with the fire resistance performance of the fire-fighting equipment, the operating distance of the fire-fighting equipment can be obtained.

[0098] For a 5000m3 diesel tank with a diameter of 21m and a height of 16.5m, the fire occurs in the entire area. The wind speed is 0. The fire area monitoring device 16 can measure the fire area to be 346m2. The surrounding thermal radiation measurement device measures the thermal radiation to be 19.4kW / m2 when the distance from the center of the liquid pool is 21m. 2 , from which the heat release rate per unit area is calculated to be 1980kw / m 2 Based on this, the heat radiation distribution around the fire can be calculated. Among them, the heat radiation of the tank top plane is 39kW / m 2 The distance is 14.3m from the center. Therefore, the operating distance of the fire monitor on the tank top plane is 14.3m away from the center of the liquid pool.

[0099] Embodiment 5

[0100] Based on the above-mentioned second embodiment, a second embodiment of a fire-fighting equipment operation distance calculation system is provided, including: a fire-fighting equipment fire resistance characteristic testing system and a fire scene periphery heat radiation and operation distance calculation system.

[0101] The fire-fighting equipment fire-resistance property testing system includes: a fire simulating system 1 (the system 1 can be implemented by referring to the existing patent document "Testing system for fire-resistance property of petrochemical components"), a thermal radiation measuring system 201, a water sprinkler system 3, a fire-fighting equipment water tank 4, a fire-fighting equipment foam liquid tank 5, a fire-fighting equipment water pump 6, a fire-fighting equipment foam liquid pump 7, a fire-fighting equipment foam proportioning mixer 8, a fire-fighting equipment foam generator 9, a pipeline valve 101, a fire-fighting equipment injection device 11, a fire-fighting water / foam pool 12, a pipeline valve 102, a pipeline valve 103, a circulating water pump 13, a circulating compressor 14, a cooling device 15, etc.

[0102] In the process of implementing the fire resistance performance test of fire fighting equipment, the above system can be used to implement the fire resistance performance test of foam / water fire fighting equipment under the condition of continuous foam / water circulation, and truly obtain the limit value and time of the fire fighting equipment's tolerance to thermal radiation.

[0103] For the fire water monitor, the rated flow rate is 130L / s and the rated pressure is 0.8MPa. Open valve 101, open valve 102, open the fire equipment water pump 6, pump out the fire water in the fire equipment water tank 4, and the fire water passes through the fire equipment foam proportioning mixer 8 and the fire equipment foam generator 9, and enters the fire equipment injection device 11 through valve 101. After passing through 11, the fire water enters the fire water / foam pool 12, and then passes through valve 102 to enter the circulating water pump 13. Turn on the circulating water pump 13, and the fire water passes through the circulating water pump 13 to enter the cooling device 15 to achieve the cooling of the fire water, and enters the pipeline between the pipeline valve 101 and the fire equipment injection device 11 through the circulation pipeline. At this time, close the fire equipment water pump 6 and valve 101 to achieve the circulation of the fire water.

[0104] After the fire water / foam circulation is realized, the thermal radiation measurement system 201 and the simulated fire system 1 are arranged in front of the thermal radiation measurement system.

[0105] According to the test requirements, the power of the simulated fire system 1 is adjusted, and the heat radiation received by the fire fighting equipment is measured by the heat radiation measurement system 201, so that the measured value is 30kW / m 2 , and then keep it unchanged, let the fire water / foam circulate, cancel the working time of the fire protection equipment 2h as the circulation time, observe the outlet of the fire monitor 11 entering the fire water / foam pool 12, at 2h, the fire water / foam has not been gasified; according to 0.5kW / m 2 Increase the intervals gradually, gradually increase the heat radiation generated by the fire system, and repeat the test to see if it is gasified, until 42kW / m 2 When the water starts to vaporize, the fire fighting equipment can withstand a heat radiation of 42kW / m 2 .

[0106] The fire surrounding thermal radiation and operation distance calculation system comprises a fire area monitoring device 16, a fire surrounding thermal radiation measurement system 17 and a calculation terminal 18. The calculation terminal 18 has a thermal radiation calculation model or software embedded therein.

[0107] The fire area monitoring device 16 measures the fire area S in real time, and the peripheral heat radiation measuring device measures the heat radiation value R of multiple points around the fire and the distance L from the center of the fire in real time. By calculating the heat radiation calculation model or software in the terminal 18, the heat release rate per unit area of ​​the fire can be calculated by reverse calculation if the fire area S, the peripheral heat radiation R and the distance L from the center of the fire are known, and then the heat radiation distribution of the space around the fire can be calculated by forward calculation; combined with the fire resistance performance of the fire-fighting equipment, the operating distance of the fire-fighting equipment can be obtained.

[0108] For a 5000m3 diesel tank with a diameter of 21m and a height of 16.5m, the fire occurs in the entire area. The wind speed is 0. The fire area monitoring device 16 can measure the fire area to be 346m2. The surrounding thermal radiation measurement device measures the thermal radiation to be 19.4kW / m2 when the distance from the center of the liquid pool is 21m. 2 , thus, the heat release rate per unit area is calculated to be 1980kw / m 2 Based on this, the heat radiation distribution around the fire can be calculated, among which the heat radiation of the tank top plane is 42kW / m 2 The distance is 13.9m from the center. Therefore, the operating distance of the fire monitor on the tank top plane is 13.9m away from the center of the liquid pool.

[0109] Embodiment 6

[0110] Based on the above-mentioned second embodiment, a third embodiment of a fire-fighting equipment operation distance calculation system is provided, comprising: a fire-fighting equipment fire resistance characteristic testing system and a fire scene periphery heat radiation and operation distance calculation system.

[0111] The fire-fighting equipment fire-resistance property testing system includes: a fire simulating system 1 (the system 1 can be implemented by referring to the existing patent document "Testing system for fire-resistance property of petrochemical components"), a thermal radiation measuring system 201, a water sprinkler system 3, a fire-fighting equipment water tank 4, a fire-fighting equipment foam liquid tank 5, a fire-fighting equipment water pump 6, a fire-fighting equipment foam liquid pump 7, a fire-fighting equipment foam proportioning mixer 8, a fire-fighting equipment foam generator 9, a pipeline valve 101, a fire-fighting equipment injection device 11, a fire-fighting water / foam pool 12, a pipeline valve 102, a pipeline valve 103, a circulating water pump 13, a circulating compressor 14, a cooling device 15, etc.

[0112] In the process of implementing the fire resistance performance test of fire fighting equipment, the above system can be used to implement the fire resistance performance test of foam / water fire fighting equipment under the condition of continuous foam / water circulation, and truly obtain the limit value and time of the fire fighting equipment's tolerance to thermal radiation.

[0113] For the fire water monitor, the rated flow rate is 160L / s and the rated pressure is 0.8MPa. Open valve 101, open valve 102, open the fire equipment water pump 6, pump out the fire water in the fire equipment water tank 4, and the fire water passes through the fire equipment foam proportioning mixer 8 and the fire equipment foam generator 9, through valve 101, and enters the fire equipment injection device 11. After passing through 11, the fire water enters the fire water / foam pool 12, and then passes through valve 102 to enter the circulating water pump 13. Turn on the circulating water pump 13, and the fire water passes through the circulating water pump 13 and enters the cooling device 15 to achieve the cooling of the fire water. The fire water enters the pipeline between the pipeline valve 101 and the fire equipment injection device 11 through the circulation pipeline. At this time, close the fire equipment water pump 6 and valve 101 to achieve the circulation of the fire water.

[0114] After the fire water / foam circulation is realized, the thermal radiation measurement system 201 and the simulated fire system 1 are arranged in front of the thermal radiation measurement system.

[0115] According to the test requirements, the power of the simulated fire system 1 is adjusted, and the heat radiation received by the fire fighting equipment is measured by the heat radiation measurement system 201, so that the measured value is 30kW / m 2 , and then keep it unchanged, let the fire water / foam circulate, cancel the working time of the fire protection equipment 2h as the circulation time, observe the outlet of the fire monitor 11 entering the fire water / foam pool 12, at 2h, the fire water / foam has not been gasified; according to 0.5kW / m 2 Increase the interval gradually, gradually increase the heat radiation generated by the fire system, and repeat the test to see if it is gasified, until 45kW / m2 When the water starts to vaporize, the fire fighting equipment can work continuously for 2 hours and the heat radiation tolerance is 45kW / m 2 .

[0116] The fire surrounding thermal radiation and operation distance calculation system comprises a fire area monitoring device 16, a fire surrounding thermal radiation measurement system 17 and a calculation terminal 18. The calculation terminal 18 has a thermal radiation calculation model or software embedded therein.

[0117] The fire area monitoring device 16 measures the fire area S in real time, and the peripheral heat radiation measuring device measures the heat radiation value R of multiple points around the fire and the distance L from the center of the fire in real time. By calculating the heat radiation calculation model or software in the terminal 18, the heat release rate per unit area of ​​the fire can be calculated by reverse calculation if the fire area S, the peripheral heat radiation R and the distance L from the center of the fire are known, and then the heat radiation distribution of the space around the fire can be calculated by forward calculation; combined with the fire resistance performance of the fire-fighting equipment, the operating distance of the fire-fighting equipment can be obtained.

[0118] For a 5000 cubic meter diesel tank with a diameter of 21 meters and a height of 16.5 meters, if the wind speed is 0, the fire area can be measured by the fire area monitoring device 16 to be 346m 2 ; The surrounding thermal radiation measurement device measured the thermal radiation at 21m from the center of the liquid pool, and the thermal radiation was 19.4kW / m 2 , from which the heat release rate per unit area is calculated to be 1980kw / m 2 Based on this, the heat radiation distribution around the fire can be calculated, among which the heat radiation of the tank top plane is 45kW / m 2 The distance is 13.4m from the center. Therefore, the operating distance of the fire monitor on the tank top plane is 13.4m away from the center of the liquid pool.

[0119] Embodiment 7

[0120] Based on the working distance calculation system provided in the above-mentioned embodiments 3 to 6, the present invention also provides a method for calculating the working distance of firefighting equipment (also called "working distance calculation method"). The working distance calculation method is implemented according to the working distance calculation system as described above.

[0121] Figure 5 Schematic diagram of the steps of the method for calculating the operating distance of fire fighting equipment in an embodiment of the present application. Figure 5 As shown, the working distance calculation method described in the embodiment of the present invention includes the following steps:

[0122] Step S501, the operation distance calculation device determines the release rate per unit area according to the actual petrochemical fire area, the heat radiation value of key points around the fire area, and the distance between the fire fighting equipment and the fire center;

[0123] Step S502: the operation distance calculation device analyzes the heat radiation distribution state around the fire scene according to the release rate per unit area;

[0124] Step S503: The operation distance calculation device calculates the operation distance of the fire fighting equipment according to the heat radiation distribution state around the fire scene, combined with the critical heat radiation value and time of the fire fighting equipment matching the heat radiation state of the current fire scene, wherein:

[0125] The critical thermal radiation value and time of the fire-fighting equipment that matches the thermal radiation state of the current fire scene are extracted from the test results obtained from the fire resistance performance test of the fire-fighting equipment, including the critical thermal radiation value and time under different thermal radiation levels.

[0126] In addition, when the operation distance calculation system includes a fire-fighting equipment fire resistance performance testing system, the sixth embodiment may also include the following steps before step S501:

[0127] Step T1, arranging a thermal radiation measuring device 201 and a fire simulation device 1 at the front end of the fire fighting equipment, wherein the thermal radiation measuring device is arranged between the fire fighting equipment and the fire simulation device;

[0128] Step T2: the control device performs cyclic control on the fire-fighting equipment and adjusts the power of the fire simulation device 1 so that the fire-fighting equipment is subjected to different levels of heat radiation;

[0129] Step T3: During the fire resistance performance test of the fire fighting equipment, the control device records the critical heat radiation value and time of the fire fighting equipment at different heat radiation levels by observing the gasification state of the fire extinguishing medium.

[0130] In addition, the operation distance calculation method described in the embodiment of the present invention can be applied to the layout of firefighting equipment at a fire rescue site.

[0131] The present invention discloses a fire resistance performance test system, an operation distance calculation system and a method for fire fighting equipment. The present invention establishes a fire resistance performance test system for fire fighting equipment, realizes a long-term fire resistance test of the injection system, obtains the real fire resistance characteristics, and based on the real-time measured fire scene area and local thermal radiation monitoring data of the fire scene, uses a thermal radiation calculation model to obtain the real-time unit area heat release rate of the fire, and then combines the fire resistance characteristics of the fire fighting equipment to calculate the real-time global thermal radiation distribution characteristics of the fire scene. In this way, the present invention can measure the fire resistance performance of fire fighting equipment in combat conditions, and obtain the operation distance of fire fighting equipment based on real-time thermal radiation data, so as to effectively guide the operation of fire fighting equipment, avoid the situation that the fire fighting equipment is burned due to being too close to the fire scene, and the fire fighting equipment is too far away from the fire scene and cannot effectively extinguish the fire, etc., solves the problem that the actual fire resistance performance of the fire fighting equipment and / or the inaccurate distribution of the surrounding thermal radiation are not considered in the existing determination of the operation distance of fire fighting equipment, so as to make the operation distance of the fire fighting equipment more accurate and more conducive to the performance of the fire fighting equipment.

[0132] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0133] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0134] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0135] It should be understood that the embodiments disclosed in the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should be extended to equivalent substitutions of these features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0136] The "one embodiment" or "embodiment" mentioned in the specification means that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0137] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A system for testing the fire resistance performance of fire fighting equipment, characterized in that: include: Firefighting equipment, which is used to achieve the circulation of fire extinguishing media; A fire simulation device, which is arranged at the front end of the fire fighting equipment and is used to simulate a petrochemical fire; A thermal radiation measuring device, which is arranged between the fire-fighting equipment and the fire simulation device, and is used to measure in real time the thermal radiation value received by the fire-fighting equipment during the simulated fire; A control device is used to subject the fire-fighting equipment to different levels of heat radiation by adjusting the power of the fire simulation device, and to perform cyclic control on the fire-fighting equipment, wherein during the test, the critical heat radiation value and time of the fire-fighting equipment at different heat radiation levels are recorded by observing the gasification state of the fire-extinguishing medium after circulation.

2. The system for testing the fire resistance performance of fire fighting equipment according to claim 1, characterized in that: The fire fighting equipment includes: A medium injection channel, which is used to inject fire extinguishing medium into the circulation loop; A medium state observation channel connected to the outlet end of the medium injection channel and used for spraying the injected fire extinguishing medium into the internal observation pool; The medium cooling channel is connected to the outlet end of the medium state observation channel and forms the circulation loop with the medium state observation channel, and is used to cool the fire extinguishing medium so as to transport the cooled fire extinguishing medium to the inlet of the medium state observation channel.

3. The system for testing the fire resistance performance of fire fighting equipment according to claim 2, characterized in that: The medium injection channel comprises: A fire water injection pipeline, which includes a fire water tank and a fire water pump arranged at the rear end of the fire water tank; A foam injection pipeline, comprising a foam liquid tank and a foam liquid pump arranged at the rear end of the foam liquid tank; A mixer connected to the outlets of the fire water pump and the foam liquid pump at the same time; The medium generator is arranged at the rear end of the mixer.

4. The system for testing the fire resistance performance of fire fighting equipment according to claim 2 or 3, characterized in that: The medium injection channel also includes: A first valve is arranged at the rear end of the medium generator, and the first valve is used to control the on-off state between the medium injection channel and the circulation loop.

5. The system for testing the fire resistance performance of firefighting equipment according to any one of claims 2 to 4, characterized in that: The medium cooling channel comprises: A circulating water pump and a circulating compressor connected to the outlet of the observation pool; A cooling device is arranged at the rear ends of the circulating water pump and the circulating compressor.

6. The system for testing the fire resistance performance of fire fighting equipment according to claim 5, characterized in that: The medium cooling channel also includes: a second valve disposed between the circulating water pump and the observation pool, the second valve being used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of fire water; and A third valve is arranged between the circulation compressor and the observation pool, and the third valve is used to control the on-off state between the medium state observation channel and the medium cooling channel to ensure the circulation of firefighting foam.

7. The system for testing the fire resistance performance of fire fighting equipment according to any one of claims 2 to 6, characterized in that: The medium state observation channel includes: An injection device, which is arranged at the inlet end of the medium state observation channel; An observation pool is arranged at the rear end of the injection device.

8. The system for testing the fire resistance performance of firefighting equipment according to any one of claims 2 to 7, characterized in that: The control device carries out the fire resistance performance test of the fire fighting equipment according to the following steps: S1, controlling the communication between the medium injection channel and the medium state observation channel, and the communication between the medium state observation channel and the medium cooling channel, and controlling the opening of a pump matching the target fire extinguishing medium, so that the target fire extinguishing medium is sprayed from the medium injection channel to the observation pool in the medium state observation channel, and then the target fire extinguishing medium is cooled by the medium cooling channel and transported to the entrance of the medium state observation channel; S2, controlling the disconnection between the medium injection channel and the medium state observation channel, thereby realizing the circulation of the target fire extinguishing medium; S3, adjusting the working power of the fire simulation device so that the heat radiation value received by the fire-fighting equipment reaches the experimental heat radiation value, and recording the cycle time in real time; S4. Observe the state of the target fire extinguishing medium sprayed out in real time, and detect whether it reaches a gasified state, so as to determine the critical thermal radiation value and critical time corresponding to the current experimental thermal radiation value when the gasified state is reached.

9. The system for testing the fire resistance performance of firefighting equipment according to any one of claims 1 to 8, characterized in that: The system for testing the fire resistance performance of fire fighting equipment also includes: A spray device is provided between the thermal radiation measuring device and the fire fighting equipment, and is used to simulate the spray state of a petrochemical fire, wherein: The control device is also used to control the start and stop and spray flow rate of the sprinkler device, so as to record the critical thermal radiation value and time of the fire-fighting equipment under different thermal radiation levels and different spray flow rate level combinations during testing.

10. A method for testing the fire resistance performance of fire fighting equipment, characterized in that: The method for testing the fire resistance performance of fire-fighting equipment is implemented by using the system for testing the fire resistance performance of fire-fighting equipment according to any one of claims 1 to 9, comprising: A thermal radiation measuring device and a fire simulation device are arranged at the front end of the fire fighting equipment, wherein the thermal radiation measuring device is arranged between the fire fighting equipment and the fire simulation device; The control device performs cyclic control on the fire-fighting equipment, and adjusts the power of the fire simulation device so that the fire-fighting equipment is subjected to different levels of heat radiation; In the process of carrying out the fire resistance performance test of the fire fighting equipment, the control device records the critical heat radiation value and time of the fire fighting equipment at different heat radiation levels by observing the gasification state of the fire extinguishing medium.

11. A system for calculating the operating distance of firefighting equipment, characterized in that: include: The operating distance calculation device is used to determine the release rate per unit area according to the actual petrochemical fire area, the thermal radiation value of key points around the fire, and the distance between the fire equipment and the center of the fire, so as to analyze the distribution state of thermal radiation around the fire. Based on this, combined with the critical thermal radiation value and time of the fire equipment matching the thermal radiation state of the current fire scene, the operating distance of the fire equipment is calculated, wherein, The critical heat radiation value and time of the fire-fighting equipment that matches the current heat radiation state at the fire scene are extracted from the test results obtained from the system for testing the fire resistance performance of fire-fighting equipment as described in any one of claims 1 to 9.

12. The system for calculating the operating distance of firefighting equipment according to claim 11, characterized in that: The operating distance calculation device comprises: A fire area monitoring device, which is used to measure the fire area; A fire scene perimeter thermal radiation measuring device, which is used to measure the real-time thermal radiation of key points around the fire scene; A computing terminal is connected to the fire area monitoring device and the fire scene perimeter thermal radiation measuring device, and is used to analyze the operating distance of the fire fighting equipment according to the fire scene area, the real-time thermal radiation, and the critical thermal radiation value and time of the fire fighting equipment.

13. The system for calculating the operating distance of firefighting equipment according to claim 11 or 12, characterized in that: The system for calculating the operating distance of firefighting equipment can be applied to the layout of firefighting equipment at a fire rescue site.

14. A method for calculating the operating distance of firefighting equipment, characterized in that: The method is implemented by using the system for calculating the operating distance of firefighting equipment according to any one of claims 11 to 13, wherein the method for calculating the operating distance of firefighting equipment comprises: Determine the release rate per unit area based on the actual petrochemical fire area, the thermal radiation values ​​of key points around the fire, and the distance between the fire fighting equipment and the center of the fire. Analyze the heat radiation distribution state around the fire scene according to the release rate per unit area; According to the heat radiation distribution state around the fire scene, combined with the critical heat radiation value and time of the fire fighting equipment matching the heat radiation state of the current fire scene, the operating distance of the fire fighting equipment is calculated, where: The critical thermal radiation value and time of the fire-fighting equipment that matches the thermal radiation state of the current fire scene are extracted from the test results obtained from the fire resistance performance test of the fire-fighting equipment, including the critical thermal radiation value and time under different thermal radiation levels.

15. The method for calculating the operating distance of firefighting equipment according to claim 14, characterized in that: The method for calculating the operating distance of firefighting equipment can be applied to the layout of firefighting equipment at a fire rescue site.

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