CN113030369A - Petrochemical industry component fire resistance's test system - Google Patents
Petrochemical industry component fire resistance's test system Download PDFInfo
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- CN113030369A CN113030369A CN201911352791.3A CN201911352791A CN113030369A CN 113030369 A CN113030369 A CN 113030369A CN 201911352791 A CN201911352791 A CN 201911352791A CN 113030369 A CN113030369 A CN 113030369A
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000001294 propane Substances 0.000 claims abstract description 39
- 239000000446 fuel Substances 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims description 59
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 238000002309 gasification Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010835 comparative analysis Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
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Abstract
The invention discloses a petrochemical component fire resistance testing system, and belongs to the technical field of safety science and engineering emergency treatment. It includes the gas system, control system and water impact system, the gas system is arranged in simulating petrochemical industry pond fire and/or jet fire, control system is arranged in the opening of control gas system burner or the increase and decrease of temperature, the water impact system is used for testing the water impact resistance performance of petrochemical industry component, the gas system includes propane conveying mechanism and air delivery mechanism, propane conveying mechanism and air delivery mechanism mix in with propane and air delivery to air-fuel ratio valve respectively, then export through output line, output line is connected with many spinal branchs, wherein all be provided with ignition electrode and burner nozzle on the every spinal branch pipe. The test system comprehensively considers the characteristics of pool fire and jet fire, considers the water impact resistance, and can test the fire resistance of the components in the petrochemical industry.
Description
Technical Field
The invention belongs to the technical field of safety science and engineering emergency treatment, and particularly relates to a system for testing the fire resistance of a petrochemical component.
Background
With the explosive development of the petrochemical industry, the scale and the number of petrochemical enterprises are increased sharply. Materials related to the interior of a petrochemical enterprise are mostly inflammable and explosive oil products, so that petrochemical fire accidents frequently occur.
The petrochemical fire is different from a building fire, and the main fire types of the petrochemical fire comprise pool fire, flowing fire and jet fire, wherein the main difference between the flowing fire and the pool fire is whether the periphery of the fire is limited or not, and the periphery of the flowing fire is not limited, so that oil can continue to flow, and the periphery of the pool fire is limited, so that the oil can not flow any more; the flame temperature and the peripheral heat radiation of pool fire and flowing fire with the same size are basically the same; the jet fire is different from the jet fire, the jet fire is high-pressure liquid or gas leakage, and when the jet fire encounters an ignition source, because the liquid or the gas is in a high-pressure state, the leakage rate and the burning rate of a fire disaster are both high, the heat release rate is high, the flame temperature is high, and the heat radiation intensity is high.
Therefore, the damage of petrochemical fire to components is mainly researched; the influence of two fire forms of pool fire and jet fire on the component is considered. At present, no special standard exists for the damage of petrochemical fire to components in China, the damage of the petrochemical industry to the components is tested, GB-9978 'fire resistance test method for building components' is adopted, the standard adopts a fire resistance test furnace, and the fire resistance of the building components is tested by regulating the temperature and pressure in the furnace; the petrochemical fire is greatly different from the building fire, the temperature and the temperature rise rate of the petrochemical pool fire are higher than those of the building fire, the temperature and the temperature rise rate of the petrochemical injection fire are higher than those of the petrochemical pool fire, and meanwhile, the injection fire has a long flame shape, and has an impact effect, a multiple impact effect and the like; for fire fighting and rescue of the component, the water impact resistance of the component needs to be tested.
Therefore, a system for testing the fire resistance of petrochemical components is urgently needed.
Disclosure of Invention
The invention provides a system for testing the fire resistance of a petrochemical component aiming at the characteristics of a petrochemical fire and the component, comprehensively considers the characteristics of pool fire and jet fire, considers the water impact resistance and can test the fire resistance of the component in the petrochemical industry.
The invention adopts the following technical scheme:
a testing system for fire resistance of petrochemical components comprises a gas system, a control system and a water impact system;
the gas system be arranged in simulating petrochemical industry pond fire and/or jet fire, control system be arranged in controlling the opening of combustion nozzle among the gas system or the increase and decrease of temperature, the water impact system be used for testing the water impact resistance performance of petrochemical component.
As a preferred aspect of the present invention, the gas system includes a propane delivery mechanism and an air delivery mechanism, the propane delivery mechanism and the air delivery mechanism respectively deliver propane and air to the air-fuel ratio valve for mixing, and then output via an output pipeline, the output pipeline is connected to a plurality of branch pipes, and each branch pipe is provided with an ignition electrode and a combustion nozzle.
As another preferable scheme of the present invention, the propane delivery mechanism includes a liquefied propane tank, a first electromagnetic valve, a gasification furnace, a primary pressure reducing valve, a gas-liquid separator, and a secondary pressure reducing valve, which are sequentially connected by a first gas line, where the first gas line after the secondary pressure reducing valve is divided into two branches, one branch line is connected to the air-fuel ratio valve by a sixth electromagnetic valve, the other branch line is connected to a seventh electromagnetic valve, and the other end of the branch line is connected to a branch line at the rear end of the air-fuel ratio valve.
Furthermore, the air conveying mechanism comprises a fan, a flow meter, a second electromagnetic valve and a first electric flow regulating valve which are sequentially connected through a second air conveying pipeline, and the other end of the second air conveying pipeline is connected with the air-fuel proportional valve.
Furthermore, the number of the branch pipes is at least three, a combustion nozzle is arranged on each corresponding branch pipe, the combustion nozzles are respectively a first combustion nozzle, a second combustion nozzle and a third combustion nozzle, a third electromagnetic valve and a second electric flow regulating valve are arranged behind the first combustion nozzle, a fourth electromagnetic valve and a third electric flow regulating valve are arranged behind the second combustion nozzle, and a fifth electromagnetic valve and a fourth electric flow regulating valve are arranged behind the third combustion nozzle.
Furthermore, the control system mainly comprises a temperature sensor and a PLC (programmable logic controller), wherein the temperature sensor is uniformly arranged in front of each combustion nozzle.
Furthermore, the temperature sensor is used for transmitting a measured temperature signal to the PLC controller, the PLC controller is used for analyzing the temperature value of each temperature sensor, the temperature value is compared and analyzed with a preset temperature value, and then corresponding instructions are sent to the relevant electromagnetic valve and the electric flow regulating valve, so that the opening of the combustion nozzle or the increase and decrease of the temperature are realized.
Furthermore, the water impact system comprises a water supply device, a water pump, a pressure gauge, a PID controller, a frequency converter, a water conveying pipeline and a spray gun, wherein the water supply device pumps water out through the water pump, the water pump is connected to the branch water pipe through the water conveying pipeline, and the spray gun is positioned on the branch water pipe.
Furthermore, the pressure gauge is installed on the water conveying pipeline and connected with the PID controller through a data line, pressure data are transmitted to the PID controller in real time, the PID controller compares and analyzes measured pressure with preset pressure and sends a corresponding instruction to be transmitted to the frequency converter, the frequency converter is connected with the water pump and used for controlling the rotating speed of the water pump and further adjusting water outlet pressure.
Further, all the combustion nozzles and the spray guns are uniformly arranged on the same vertical plane at intervals.
Furthermore, the outlet end of the fan is connected with a hose, and the other end of the hose is connected to the second gas transmission pipeline.
Further, each ignition electrode is located above each combustion nozzle.
Another object of the present invention is to provide an application of the above testing system for fire resistance of petrochemical components in testing fire resistance and water impact resistance of petrochemical components.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can simulate the petrochemical pool fire and the jet fire, and fully considers the high temperature and high temperature rise rate characteristics of the petrochemical pool fire and the jet fire; meanwhile, the intermittent impact effect and the water impact effect of the flame can be simulated, the possible situations of the petrochemical component under the fire condition are fully considered, and the comprehensive fire resistance performance test is further carried out on the petrochemical component.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic piping diagram of a combustion system of the present invention;
FIG. 2 is a control schematic of the control system of the present invention;
FIG. 3 is a schematic view of a water hammer system of the present invention;
FIG. 4 is a schematic view of a combustion nozzle and lance of the present invention.
In the figure: 1. a liquefied propane tank, 2-1, a first electromagnetic valve, 2-2, a second electromagnetic valve, 2-3, a third electromagnetic valve, 2-4, a fourth electromagnetic valve, 2-5, a fifth electromagnetic valve, 2-6, a sixth electromagnetic valve, 2-7, a seventh electromagnetic valve, 3, a gasification furnace, 4, a first-stage pressure reducing valve, 5, a gas-liquid separator, 6, a second-stage pressure reducing valve, 7, an air-fuel proportional valve, 8, a first gas pipeline, 9, a fan, 10, a hose, 11, a flowmeter, 12-1, a first electric flow regulating valve, 12-3, a second electric flow regulating valve, 12-4, a third electric flow regulating valve, 12-5, a fourth electric flow regulating valve, 13-3, a first ignition electrode, 13-4, a second ignition electrode, 13-5 and a third ignition electrode, 14. the device comprises combustion nozzles, 14-3 parts, a first combustion nozzle, 14-4 parts, a second combustion nozzle, 14-5 parts, a third combustion nozzle, 15 parts, a branch pipe, 16 parts, a PLC (programmable logic controller) 17 part, a water supply device, 18 parts, a water pump, 19 parts, a water conveying pipeline, 20 parts, a pressure gauge, 21 parts, a PID (proportion integration differentiation) controller, 22 parts, a frequency converter, 23 parts, a branch water pipe, 24 parts, a spray gun, 15-3 parts and a temperature sensor.
Detailed Description
The invention provides a testing system for fire resistance of petrochemical components, and in order to make advantages and technical schemes of the invention clearer and clearer, the invention is described in detail with reference to specific embodiments.
The invention, as shown in fig. 1 to 4, relates to a testing system for fire resistance of petrochemical components, which comprises a gas system, a control system and a water impact system;
the gas system is used for simulating petrochemical pool fire and/or jet fire, the control system is used for controlling the opening of a combustion nozzle or the increase and decrease of the temperature in the gas system, and the water impact system is used for testing the water impact resistance of a petrochemical component.
The gas system comprises a propane conveying mechanism and an air conveying mechanism, wherein the propane conveying mechanism and the air conveying mechanism respectively convey propane and air to the air-fuel proportional valve 7 for mixing, and then the mixture is output through an output pipeline, the output pipeline is connected with a plurality of branch pipes, and each branch pipe is provided with an ignition electrode and a combustion nozzle.
The propane conveying mechanism comprises a liquefied propane tank 1, a first electromagnetic valve 2-1, a gasification furnace 3, a primary pressure reducing valve 4, a gas-liquid separator 5 and a secondary pressure reducing valve 6 which are sequentially connected through a first gas pipeline 8, wherein the first gas pipeline behind the secondary pressure reducing valve 6 is divided into two branches, one branch pipeline is connected with the air-fuel proportional valve 7 through a sixth electromagnetic valve 2-6, the other branch pipeline is connected with a seventh electromagnetic valve 2-7, and the other end of the branch pipeline is connected to a branch pipeline at the rear end of the air-fuel proportional valve.
The air conveying mechanism comprises a fan 9, a flow meter 11, a second electromagnetic valve 2-2 and a first electric flow regulating valve 12-1 which are sequentially connected through a second air conveying pipeline, and the other end of the second air conveying pipeline is connected with the air-fuel proportional valve 7. Preferably, the outlet end of the blower is connected with a hose 10, the other end of the hose 10 is connected to the second air delivery line, and the hose is arranged to avoid the influence of vibration and the like.
The number of the branch pipes 15 is at least three, each corresponding branch pipe is provided with a combustion nozzle 14 which is respectively a first combustion nozzle 14-3, a second combustion nozzle 14-4 and a third combustion nozzle 14-5, a third electromagnetic valve 2-3 and a second electric flow regulating valve 12-3 are arranged behind the first combustion nozzle 14-3, a fourth electromagnetic valve 2-4 and a third electric flow regulating valve 12-4 are arranged behind the second combustion nozzle 14-4, and a fifth electromagnetic valve 2-5 and a fourth electric flow regulating valve 12-5 are arranged behind the third combustion nozzle.
The control system mainly comprises a temperature sensor and a PLC 16, wherein the temperature sensor is uniformly arranged in front of each combustion nozzle. The temperature sensors 15-3 are used for transmitting measured temperature signals to the PLC, the PLC is used for analyzing temperature values of the temperature sensors, comparing the temperature values with preset temperature values and analyzing the temperature values, and then corresponding instructions are sent to relevant electromagnetic valves and electric flow regulating valves, so that the opening of the combustion nozzle or the increase and decrease of the temperature are achieved.
The water impact system comprises a water supply device 17, a water pump 18, a pressure gauge 20, a PID controller 21, a frequency converter 22, a water conveying pipeline 19 and a spray gun 24, wherein the water supply device pumps water out through the water pump, the water pump is connected to a branch water pipe 23 through the water conveying pipeline, and the spray gun is connected to the branch water pipe 23. Install manometer 20 on the water piping line, manometer 20 is connected with PID controller 21 through the data line, with pressure data real-time transmission to PID controller 21 in, PID controller 21 will measure pressure and predetermine pressure comparative analysis, and then send corresponding instruction to transmit on converter 22, the converter is connected with the water pump, and converter 22 is used for controlling the water pump rotational speed, and then adjusts out water pressure. As shown in fig. 4, all the combustion nozzles and the lances are arranged at regular intervals on the same vertical plane.
Preferably, each ignition electrode, such as first ignition electrode 13-3, second ignition electrode 13-4, and third ignition electrode 13-5, is located above each combustion nozzle.
The following detailed description is given with reference to specific embodiments.
Example 1:
the gas system comprises a liquefied propane tank, an electromagnetic valve, a gasification furnace, a primary pressure reducing valve, a gas-liquid separator, a secondary pressure reducing valve, an air-fuel proportional valve, a first gas pipe, a fan, a hose, a flowmeter, an electric flow regulating valve (with an electric actuator), an ignition electrode, a combustion nozzle and the like;
the liquefied propane tank is sequentially connected with the electromagnetic valve, the gasification furnace, the primary pressure reducing valve, the gas-liquid separator and the secondary pressure reducing valve through a first gas transmission pipeline, then the pipeline is divided into two branches, one branch is connected with the air-fuel proportional valve through the electromagnetic valve, and the other branch is connected with the electromagnetic valve so as to bypass the air-fuel proportional valve; the fan provides air, in order to avoid the influence of vibration and the like, the hose 10 is connected firstly, then the hose is sequentially connected with the flowmeter, the electromagnetic valve and the electric flow regulating valve through the first gas transmission pipe, and finally the hose is connected with the air-fuel proportional valve, so that the air and the propane are mixed in the air-fuel proportional valve according to a certain proportion and then output, and are uniformly output to a plurality of combustion nozzles through branch pipes, and the magnetic valve and the electric flow regulating valve are arranged behind the combustion nozzles of each branch pipe.
Control system mainly includes temperature sensor, PLC controller etc. temperature sensor evenly arranges in the combustion nozzle in front, and the measuring temperature signal transmits the PLC controller, and the PLC controller analyzes each temperature sensor's temperature value, carries out comparative analysis with predetermined temperature value, then sends corresponding instruction to solenoid valve or electronic flow control valve, and then realizes opening or the increase and decrease of temperature of combustion nozzle through solenoid valve or electronic flow control valve.
The water impact system comprises a water supply device, a water pump, a water pipeline, a pressure gauge, a PID controller, a frequency converter, a branch water pipe, a spray gun and the like; the water supply device is connected with the water pump through a water pipe, then delivers water through a water delivery pipeline and is divided into a plurality of branch water pipes, and each branch water pipe is connected with a spray gun; the pressure gauge is installed on the water conveying pipeline and is connected with the PID controller through a data line, pressure data can be transmitted to the PID controller in real time, the PID controller compares and analyzes the measured pressure with preset pressure and then sends a corresponding instruction, and the instruction is transmitted to the frequency converter; the frequency converter is connected with the water pump so as to control the rotating speed of the water pump and further regulate the water outlet pressure. The combustion nozzles and the spray guns are uniformly arranged on the same vertical plane at intervals, so that the fire resistance and the water impact resistance can be tested.
Example 2:
the fire resistance testing system in the embodiment 1 of the invention is used for simulating the petrochemical pool fire, and can simultaneously simulate the impact effect and the water impact effect of the petrochemical fire. The specific simulation method comprises the following steps:
(1) simulating a petrochemical pool fire: opening all the solenoid valves except the seventh solenoid valves 2 to 7, and opening the blower 9, thereby supplying air into the air-fuel ratio valve 7; the liquefied propane tank 1 is opened, the liquefied propane firstly passes through the gasification furnace 3, the gasification furnace 3 gasifies most of the liquefied propane into gas, then the gas passes through the primary pressure reducing valve 4, the pressure of the liquefied propane gas can be reduced, and then the non-gasified liquid propane and the gasified liquefied propane gas can be separated through the gas-liquid separator 5, so that unsafe accidents such as flowing of liquid fuel and the like caused by the fact that the liquid propane enters a combustion nozzle are avoided;
the liquefied propane gas is decompressed again through a secondary decompression valve 6, so that propane gas meeting the pressure requirement is output, the propane gas enters an air-fuel proportional valve 7 and is mixed with air according to a preset proportion, the main characteristic of the petrochemical pool fire is high temperature and rapid temperature rise, and the air-fuel proportion is set to be the optimal stoichiometric ratio in order to save fuel, so that premixed gas of air fuel is formed; the air-fuel premixed gas enters a plurality of combustion nozzles through a plurality of branch pipes 15;
controlling an ignition electrode to ignite so as to ignite the premixed gas;
the temperature sensor 15-3 in front of the combustion nozzle measures the temperature of each point in front of the nozzle and transmits the temperature data to the PLC 16 in real time; the PLC controller 16 analyzes the inputted temperature data and compares it with the set temperature of the front end of each combustion nozzle, and then adjusts the flow rate of each combustion nozzle by adjusting the first electric flow rate adjustment valve 12-1 to adjust the total fuel flow rate, and then adjusting the electric flow rate adjustment valves 12-3/12-4 and 12-5 on each branch, etc., so that the temperature at each measurement point can meet the requirements.
Example 3:
the fire resistance testing system in the embodiment 1 of the invention is used for simulating petrochemical fire injection, and can simultaneously simulate the impact effect and the water impact effect of the petrochemical fire. The specific simulation method comprises the following steps:
according to the standard ISO-22899, at present, the petrochemical component is tested by petrochemical injection fire, which is mainly ignited by propane gas with the flow rate of 0.3kg/s and is tested without premixed gas;
opening a first electromagnetic valve 2-1 and a seventh electromagnetic valve 2-7 of the electromagnetic valves, opening a liquefied propane tank 1 by using any electromagnetic valve such as a fourth electromagnetic valve 2-4 on a branch pipeline, enabling the liquefied propane to sequentially pass through a gasification furnace 3, a primary pressure reducing valve 4, a gas-liquid separator 5 and a secondary pressure reducing valve 6, and thus obtaining propane gas meeting pressure requirements, wherein the propane gas is not mixed with air and directly enters a second combustion nozzle 14-4 through the opened fourth electromagnetic valve 2-4; the second ignition electrode 13-4 is utilized to ignite the second combustion nozzle 14-4 to form injection fire, and the third electric flow regulating valve 12-4 is regulated, so that the flow of propane can meet the standard requirement and can be regulated according to the requirement of the third electric flow regulating valve;
the standard ISO22899 does not set the test requirements for the multiple impact performance of a jet fire, and therefore, it is necessary to set the impact time interval, impact pressure or flow rate of the jet fire by itself and to control the third electric flow rate control valve 12-4.
Example 4:
the fire resistance test system in the embodiment 1 of the invention is used for testing the water impact resistance of the component.
The water pump 18 is started, water in the water supply device is pumped into the water delivery pipeline 19, the pressure gauge 20 measures the pressure of the water delivery pipeline in real time and transmits the pressure to the PID controller 21, the PID controller adjusts the rotating speed of the water pump 18 through the frequency converter 22 according to a preset pressure value, so that the output pressure is adjusted, the pressure meets the requirement, the water delivery pipeline 19 is divided into a plurality of branch pipes 23, the front end of each branch pipe is connected with the spray gun 24, water with set pressure is ejected from the spray gun, and therefore the water impact resistance test can be carried out on the former components.
Parts which are not described in the invention can be realized by adopting or referring to the prior art.
Although terms such as the liquefied propane tank 1, the first solenoid valve 2-1, the air-fuel ratio valve 7, the first gas line 8, etc., are used more frequently herein, the possibility of using other terms is not excluded, and these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
It is further understood that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (13)
1. A petrochemical component fire resistance performance testing system, characterized by: the device comprises a gas system, a control system and a water impact system;
the gas system be arranged in simulating petrochemical industry pond fire and/or jet fire, control system be arranged in controlling the opening of combustion nozzle among the gas system or the increase and decrease of temperature, the water impact system be used for testing the water impact resistance performance of petrochemical component.
2. The system for testing the fire resistance of petrochemical components according to claim 1, wherein: the gas system comprises a propane conveying mechanism and an air conveying mechanism, the propane conveying mechanism and the air conveying mechanism respectively convey propane and air to the air-fuel proportional valve for mixing, and then the mixture is output through an output pipeline, the output pipeline is connected with a plurality of branch pipes, and each branch pipe is provided with an ignition electrode and a combustion nozzle.
3. The system for testing the fire resistance of petrochemical components according to claim 2, wherein: the propane conveying mechanism comprises a liquefied propane tank, a first electromagnetic valve, a gasification furnace, a primary pressure reducing valve, a gas-liquid separator and a secondary pressure reducing valve which are sequentially connected through a first gas pipeline, the first gas pipeline behind the secondary pressure reducing valve is divided into two branches, one branch is connected with the air-fuel proportional valve through a sixth electromagnetic valve, the other branch is connected with a seventh electromagnetic valve, and the other end of the branch is connected to the branch at the rear end of the air-fuel proportional valve.
4. The system for testing the fire resistance of petrochemical components according to claim 2, wherein: the air conveying mechanism comprises a fan, a flow meter, a second electromagnetic valve and a first electric flow regulating valve which are sequentially connected through a second air conveying pipeline, and the other end of the second air conveying pipeline is connected with the air-fuel proportional valve.
5. A testing system for fire resistance of petrochemical components according to claim 3 or 4, wherein: the device is characterized in that at least three branch pipes are arranged, a combustion nozzle is arranged on each corresponding branch pipe and is respectively a first combustion nozzle, a second combustion nozzle and a third combustion nozzle, a third electromagnetic valve and a second electric flow regulating valve are arranged behind the first combustion nozzle, a fourth electromagnetic valve and a third electric flow regulating valve are arranged behind the second combustion nozzle, and a fifth electromagnetic valve and a fourth electric flow regulating valve are arranged behind the third combustion nozzle.
6. The system for testing the fire resistance of petrochemical components according to claim 5, wherein: the control system mainly comprises a temperature sensor and a PLC (programmable logic controller), wherein the temperature sensor is uniformly arranged in front of each combustion nozzle.
7. The system for testing the fire resistance of petrochemical components according to claim 6, wherein: the temperature sensors are used for transmitting measured temperature signals to the PLC, the PLC is used for analyzing the temperature values of the temperature sensors, comparing and analyzing the temperature values with preset temperature values, and then sending corresponding instructions to relevant electromagnetic valves and electric flow regulating valves, so that the opening of the combustion nozzle or the increase and decrease of the temperature are realized.
8. The system for testing the fire resistance of petrochemical components according to claim 5, wherein: the water impact system comprises a water supply device, a water pump, a pressure gauge, a PID controller, a frequency converter, a water conveying pipeline and a spray gun, wherein the water supply device pumps water out through the water pump, the water pump is connected to the branch water pipe through the water conveying pipeline, and the spray gun is positioned on the branch water pipe.
9. The system for testing the fire resistance of petrochemical components according to claim 8, wherein: the water delivery pipeline is provided with the pressure gauge, the pressure gauge is connected with the PID controller through a data line and transmits pressure data to the PID controller in real time, the PID controller compares and analyzes the measured pressure with preset pressure and then sends out a corresponding instruction to transmit the pressure data to the frequency converter, the frequency converter is connected with the water pump and is used for controlling the rotating speed of the water pump and further adjusting the water outlet pressure.
10. The system for testing the fire resistance of petrochemical components according to claim 9, wherein: all the combustion nozzles and the spray guns are arranged on the same vertical plane at regular intervals.
11. The system for testing the fire resistance of petrochemical components according to claim 4, wherein: the outlet end of the fan is connected with a hose, and the other end of the hose is connected to a second gas transmission pipeline.
12. The system for testing the fire resistance of petrochemical components according to claim 2, wherein: each ignition electrode is located above each combustion nozzle.
13. Use of a testing system for fire resistance of petrochemical components according to any one of claims 1 to 12 in tests for measuring fire resistance and water impact resistance of petrochemical components.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116577455A (en) * | 2023-05-06 | 2023-08-11 | 重庆大学 | Fire resistance test method and device for fire resistance cable |
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| CN107462076A (en) * | 2016-06-03 | 2017-12-12 | 湖北强达环保科技股份有限公司 | A kind of heater for SCR methods denitrating system input flue gas |
| CN208606584U (en) * | 2018-06-21 | 2019-03-15 | 东莞市中诺质检仪器设备有限公司 | Gas control system for building element fire resistance test horizontal stove |
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| CN202994601U (en) * | 2012-12-13 | 2013-06-12 | 广州市建筑材料工业研究所有限公司 | Device for performing water-resistant impact test on building component after fire-resistant test |
| CN204204305U (en) * | 2014-11-04 | 2015-03-11 | 中国石油化工股份有限公司 | Storage tank is kidney-yang training simulation device |
| CN107462076A (en) * | 2016-06-03 | 2017-12-12 | 湖北强达环保科技股份有限公司 | A kind of heater for SCR methods denitrating system input flue gas |
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| CN116577455A (en) * | 2023-05-06 | 2023-08-11 | 重庆大学 | Fire resistance test method and device for fire resistance cable |
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