A gas true fire control method based on true fire firefighting training

Abstract

The application discloses a kind of gas real fire control method based on real fire fire training, belong to fire training technical field.The training before preparation A, training process B and training end C, preset training time, by real-time time and training time are compared, to judge training result;When real-time time is greater than training time, adjust gas valve threshold closing state, judge overtime, training fails, training ends;Conversely, adjust gas valve, make its opening degree gradually adjust to minimum opening degree from current opening degree, then close gas valve, judge training success, training ends.The application detects the temperature in the combustion zone by placing temperature sensors in the combustion zone.In order to increase the detection coverage of the temperature sensors in the combustion zone, the temperature sensors placed in the combustion zone form a triangular shape.By obtaining the signals of the temperature sensors, the real-time fire extinguishing conditions of the participating firefighters in the combustion zone are obtained, and the gas valve is adjusted in real time to ensure the safety of the fire extinguishing drill process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fire training, and particularly relates to a gas real fire control method based on real fire training. BACKGROUND

[0002] Traditional real fire training generally adopts conventional combustion media such as kerosene, wood and cotton yarn to ignite, develop fire and extinguish fire and the like. In recent years, traditional real fire training is gradually replaced by gas real fire training due to controllability, safety, environmental protection and the like. The combustion media of gas real fire is various, which can be coal gas, natural gas, propane and the like.

[0003] Some fire brigade training sites with real fire training systems also adopt traditional outdoor real fire simulation training devices for training, and indoor real fire training systems are very rare. Moreover, the control system of the training system and safety and environmental protection measures are very imperfect, and the flame form of the simulated flame and the evaluation of the training examination are greatly different from the requirements of international real fire training. SUMMARY

[0004] The application aims to provide a gas real fire control method based on real fire training, which solves the above problems in the prior art.

[0005] TECHNICAL SOLUTION The gas real fire control method based on real fire training comprises the following steps:

[0006] Preparation A before training:

[0007] The gas storage device is sufficient for combustion media, the outlet of the gas storage device is communicated with a combustion zone through a gas valve, the combustion zone is built by a pipeline, a plurality of gas outlets are formed in the pipeline, the outflow amount of the combustion media of the gas outlets is controlled by the gas valve, whether each gas outlet is blocked is detected, and an igniter is installed in the pipeline, a plurality of temperature sensors are installed in the combustion zone, and the placement positions of the temperature sensors in the combustion zone form a triangle;

[0008] Training process B:

[0009] Step B1, first, the gas valve is adjusted to the minimum opening degree, at this time, the combustion media flows into the pipeline until the combustion media flowing out of the gas outlet can be ignited by the igniter;

[0010] Step B2, after the igniter ignites the combustion media, a fire increasing transition stage is entered, the opening degree of the gas valve is adjusted to increase the fire until the fire enters a violent stage;

[0011] Step B3, when the fire enters the violent fire stage, the fire extinguishing stage begins, the firefighters enter the burning area to extinguish the fire, and the real-time use time is recorded as the extinguishing time. The real-time extinguishing condition of the burning area is judged by acquiring the signal of each temperature sensor, and the gas valve is adjusted according to the extinguishing condition;

[0012] Training end C:

[0013] The preset training time is compared with the real-time use time to judge the training result.

[0014] When the real-time use time is greater than the training time, the gas valve value is adjusted to the closed state, the timeout is judged, the training fails, and the training ends. Otherwise, the gas valve is adjusted so that its opening degree gradually adjusts to the minimum opening degree, and then the gas valve is closed. The training is successful, and the training ends.

[0015] Preferably, during the training process, the adjustment process of the gas valve in the fire increasing transition stage of step B2 is as follows:

[0016] Step B21, wherein the gas valve opening degree is O X Before igniting the combustion medium, the gas valve opening degree at this time is O min ;

[0017] Step B22, after the combustion medium is ignited, the fire increasing transition stage begins. During this stage, the gas valve opening degree is adjusted from O min to O max , the time used in the fire increasing transition stage is recorded as the transition time. After completing the fire increasing transition stage, the gas valve opening degree remains O max , at this time the fire in the burning area enters the violent fire state, and the fire in the violent fire state is controlled within a safe range.

[0018] Preferably, during the training process, the opening degree of the gas valve in the fire extinguishing stage of step B3 is divided into 11 adjustment grades, and the division method is as follows:

[0019] The gas valve opening degree is O X , wherein X is an integer from 1 to 11, X is the adjustment grade corresponding to the gas valve, the difference between the gas valve opening degrees O min and O max is divided into 9 equal parts to obtain a value δ, the gas valve opening degree O 10 is O max -δ*1, the gas valve opening degree O9 is O max -δ*2, and so on. The gas valve opening degree O2 is O max -δ*9, the gas valve opening degree O min is O1, the gas valve opening degree O min is O 11 .

[0020] Preferably, the adjustment of the gas valve according to the fire extinguishing condition in step B3 in the training process is as follows:

[0021] Step B31, preset the decision period, the decision period from the beginning to the end is 5 seconds;

[0022] Step B32, preset the specified average temperature, the specified maximum temperature difference, and the specified maximum average temperature;

[0023] Step B33, the range monitored by each temperature sensor is the monitoring area, the temperature difference of the monitoring area is the actual temperature difference, and the actual temperature difference of the combustion area is C2m, where m is the number of temperature sensors. The actual maximum temperature difference and the effective average temperature of the combustion area can be obtained by calculation;

[0024] Step B34, preset the gas valve decision criterion up , the gas valve decision criterion down , the decision threshold up , the decision threshold down ;

[0025] Step B35, in each second within the last 4 seconds of the decision period, the effective average temperature is compared with the specified maximum average temperature, and the comparison result is used as the adjustment basis of the gas valve decision criterion up ;

[0026] Step B36, in each second within the last 4 seconds of the decision period, the effective average temperature is compared with the specified average temperature, and the comparison result is used as the adjustment basis of the gas valve decision criterion down ;

[0027] Step B37, in each second within the last 4 seconds of the decision period, the effective average temperature is compared with the specified maximum average temperature, and the comparison result is used as the adjustment basis of the gas valve decision criterion up .

[0028] Preferably, in step B31, in each second within the last 4 seconds of the preset decision period, the following work processes are completed:

[0029] When the calculated effective average temperature is less than the specified average temperature, the gas valve decision criterion down is increased by increment Δ1, otherwise, the gas valve decision criterion down remains unchanged;

[0030] When the calculated actual maximum temperature difference is less than the specified maximum temperature difference, the gas valve decision criterion down is increased by increment Δ2, otherwise, the gas valve decision criterion down remains unchanged;

[0031] When the calculated effective average temperature is greater than or equal to the specified maximum average temperature, the gas valve decision criterion up is added by Δ3, otherwise, the gas valve decision criterion up is not changed.

[0032] Preferably, within the 5th second of the decision period in step B31, the following working processes are completed:

[0033] When the gas valve decision criterion down is greater than or equal to the decision threshold down , the gas valve decision criterion down , the gas valve decision criterion up and the number of consecutive non-decision periods are initialized, the gas valve decision criterion up and the number of consecutive non-decision periods are compared, and when the gas valve decision criterion X-1 is greater than or equal to the decision threshold min , the gas valve opening is O down , the gas valve decision criterion down is initialized, the gas valve decision criterion up and the number of consecutive non-decision periods are initialized, and the next decision period is entered, repeating the fire extinguishing stage in step B3 until the gas valve opening is O up , the gas valve is closed, and the training ending link is entered.

[0034] Preferably, within the 5th second of the decision period in step B31, the following working processes are completed:

[0035] When the gas valve decision criterion down is less than the decision threshold down , the gas valve decision criterion up is compared with the decision threshold up , when the gas valve decision criterion up is greater than or equal to the decision threshold up , the gas valve opening is O X+1 , the gas valve decision criterion down is initialized, the gas valve decision criterion up and the number of consecutive non-decision periods are initialized, the next decision period is entered, and the fire extinguishing stage in step B3 is repeated until the gas valve opening is O min , the gas valve is closed, and the training ending link is entered.

[0036] Otherwise, after the number of consecutive non-decision periods is incremented by one, the next decision period is entered, and the fire extinguishing stage in step B3 is repeated until the gas valve opening is O min , the gas valve is closed, and the training ending link is entered.

[0037] Preferably, after entering the ending link, the gas valve is closed, the time of the decision period is counted to obtain the real-time time, and the training is determined to be successful or failed by comparing the real-time time with the training time.

[0038] Beneficial effects: the present application relates to a kind of gas true fire control method based on true fire fire training, temperature sensor is placed in combustion zone to detect the temperature in combustion zone, to be able to increase the temperature sensor detection coverage in combustion zone, temperature sensor placed in combustion zone forms triangle, by obtaining the signal of temperature sensor, to obtain the real-time fire extinguishing condition of training fire personnel in combustion zone, to carry out real-time adjustment to gas valve, ensure the safety of fire drill process;

[0039] Secondly, whether the fire extinguishing tactics of training fire personnel is reasonable can also be judged in the whole process of fire extinguishing training, not only the accuracy of assessment is improved, but also the adjustment of fire extinguishing tactics is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 It is the system block diagram of the present application;

[0041] Fig. 2 It is the structural schematic diagram of the present application.

[0042] Figs. 1-2 In the drawings, reference numerals are: 1 gas storage device;2, gas valve;3, combustion zone;4, pipeline;5, igniter;6, temperature sensor. DETAILED DESCRIPTION

[0043] As Figs. 1-2 shown, the present application provides a technical solution: a kind of gas true fire control method based on true fire fire training, comprising the following steps:

[0044] Preparation A before training:

[0045] Gas storage device 1 is sufficient combustion medium, the outlet of the gas storage device 1 is communicated with combustion zone 3 by gas valve 2, the combustion zone 3 is built by pipeline 4, a plurality of gas outlets are opened on the pipeline 4, cooperate with gas valve 2 to control the outflow of combustion medium of gas outlet, detect whether each gas outlet is blocked, igniter 5 is installed in pipeline 4, a plurality of temperature sensors 6 are installed in the combustion zone 3, the placement position of the temperature sensor 6 in the combustion zone 3 forms triangle, temperature sensor 6 is placed in triangle shape, can increase the detection coverage of temperature sensor 6 in combustion zone 3, can obtain the temperature in larger range in combustion zone 3 with fewer temperature sensors 6, not only reduce cost, but also can master the real-time fire extinguishing condition of training fire personnel in combustion zone 3, and according to the signal of temperature sensor 6 obtained, real-time adjustment is carried out to gas valve 2, ensure the safety of fire drill process.

[0046] Training process B:

[0047] Step B1, first adjust the gas valve 2, adjust the gas valve 2 to the minimum opening, at this time the combustion medium to the pipeline 4, until the gas hole out of the combustion medium can be ignited by the igniter 5;

[0048] Step B2, after the igniter 5 ignites the combustion medium, it enters the fire increasing transition stage, the preset gas valve opening is O X , by adjusting the opening of the gas valve, that is, the opening of the gas valve 2 is adjusted from O min to O max , so that the fire increases, until it enters the violent fire;

[0049] Wherein, before the combustion medium is ignited, the opening of the gas valve at this time is O min , after the combustion medium is ignited, it enters the fire increasing transition stage, in this stage, the opening of the gas valve is adjusted from O min to O max , the time used in the fire increasing transition stage is recorded as the transition time, after completing the fire increasing transition stage, the opening of the gas valve remains O max , at this time the fire of the combustion zone 3 enters the violent fire state, and the fire in the violent fire state is controlled within the safety range.

[0050] Step B3, when the fire enters the violent fire, the opening of the gas valve 2 is divided into 11 adjustment gears, the division method is as follows: the opening of the gas valve is O X , wherein X is an integer from 1 to 11, X is the adjustment gear corresponding to the gas valve 2, the difference between the opening of the gas valve O min and O max is divided into 9 equal parts to obtain a value δ, the opening of the gas valve O 10 is O max -δ*1, the opening of the gas valve O9 is O max -δ*2, and so on, the opening of the gas valve O2 is O max -δ*9, the opening of the gas valve O min is O1, the opening of the gas valve O min is O 11 ;

[0051] After completing the gear division of the opening of the gas valve 2, a decision cycle is preset, the decision cycle from the beginning to the end is 5 seconds, a specified average temperature, a specified maximum temperature difference, a specified maximum average temperature, a gas valve decision criterion up, a gas valve decision criterion down , a decision threshold up , a decision threshold down, into the fire extinguishing stage, each temperature sensor 6 monitors the range of the monitoring area, the temperature difference of the monitoring area is the actual temperature difference, the actual temperature difference of the combustion area 3 is C2m, where m is the number of temperature sensors 6, the actual maximum temperature difference and the effective average temperature of the combustion area 3 can be obtained by calculation; every second within 4 seconds before the decision cycle, the effective average temperature needs to be compared with the specified maximum average temperature, and the comparison result is used as the gas valve decision criterion up ;

[0052] Every second within 4 seconds before the decision cycle, the effective average temperature needs to be compared with the specified average temperature, and the comparison result is used as the gas valve decision criterion down ;

[0053] Every second within 4 seconds before the decision cycle, the effective average temperature needs to be compared with the specified maximum average temperature, and the comparison result is used as the gas valve decision criterion up ;

[0054] When the calculated effective average temperature is less than the specified average temperature, the gas valve decision criterion down is added by an increment Δ1, otherwise, the gas valve decision criterion down remains unchanged;

[0055] When the calculated actual maximum temperature difference is less than the specified maximum temperature difference, the gas valve decision criterion down is added by an increment Δ2, otherwise, the gas valve decision criterion down remains unchanged;

[0056] When the calculated effective average temperature is greater than or equal to the specified maximum average temperature, the gas valve decision criterion up is added by an increment Δ3, otherwise, the gas valve decision criterion up remains unchanged;

[0057] Where Δ3 is a fixed value, Δ1 is greater than Δ2, that is, the influence of the effective average temperature is greater than the actual maximum temperature difference; after the calculation of the gas valve decision criterion down , the gas valve decision criterion up is completed within 4 seconds before the decision cycle, the comparison between the gas valve decision criterion down , the gas valve decision criterion up , the decision threshold up , the decision threshold down is completed within the last second of the decision cycle, to realize the adjustment of the gas valve opening degree;

[0058] When the gas valve decision criterion down is less than the decision threshold down , the gas valve decision criterion upwith the decision threshold up When the gas valve decision criterion up is greater than or equal to the decision threshold up , the gas valve opening is 0 X+1 , the gas valve decision criterion down , the gas valve decision criterion up and the number of consecutive non-decision periods are initialized, the next decision period is entered, and the fire extinguishing stage in step B3 is repeated until the gas valve opening is 0 min , the gas valve 2 is closed, and the training end link is entered.

[0059] Otherwise, the number of consecutive non-decision periods is increased by one period, the next decision period is entered, and the fire extinguishing stage in step B3 is repeated until the gas valve opening is 0 min , and the training end link is entered.

[0060] After entering the end link, the gas valve 2 is closed, the decision period is counted, and the real-time time is obtained. Training ends C:

[0061] The preset training time is compared with the real-time time to determine the training result.

[0062] When the real-time time is greater than the training time, the gas valve 2 is adjusted to the closed state, the timeout is determined, the training fails, and the training ends. Otherwise, the training is determined to be successful, and the training ends.

[0063] The above gas fire control method can not only obtain the real-time fire extinguishing condition of the participating fire personnel in the combustion zone 3 to adjust the gas valve 2 in real time, ensure the safety of the fire extinguishing process, but also determine whether the fire extinguishing tactics of the participating fire personnel are reasonable in the overall process of the fire extinguishing training. This not only improves the accuracy of the assessment and evaluation, but also facilitates the adjustment of the fire extinguishing tactics in the later period.

[0064] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various equivalent transformations of the technical solutions of the present application can be made, and these equivalent transformations all belong to the protection scope of the present application.

Claims

1. A gas fire control method based on real fire training, characterized in that, It comprises the following steps: Preparation for training A: The gas storage device (1) is sufficient for combustion medium, the outlet of the gas storage device (1) is communicated with the combustion zone (3) through the gas valve (2), the combustion zone (3) is built by the pipeline (4), a plurality of gas outlets are arranged on the pipeline (4), the gas valve (2) is used to control the outflow of the combustion medium of the gas outlet, whether each gas outlet is blocked is detected, the igniter (5) is installed in the pipeline (4), a plurality of temperature sensors (6) are installed in the combustion zone (3), and the temperature sensors (6) are arranged in a triangular shape in the combustion zone (3); Training process B: Step B1, first adjust the gas valve (2), adjust the gas valve (2) to the minimum opening degree, at this time the combustion medium flows into the pipeline (4), until the combustion medium flowing out of the gas outlet can be ignited by the igniter (5); Step B2, after the igniter (5) ignites the combustion medium, enter the fire increasing transition stage, adjust the opening degree of the gas valve, so that the fire increases, until the fire enters the violent fire; Step B3, when the fire enters the violent fire, enter the fire extinguishing stage, the fire extinguishing personnel enter the combustion zone (3) to extinguish the fire, at the same time, the real-time time of the fire extinguishing time is recorded, the real-time fire extinguishing condition of the combustion zone (3) is judged by acquiring the signal of each temperature sensor (6), and the gas valve (2) is adjusted according to the fire extinguishing condition; Training end C: The preset training time is compared with the real-time time to judge the training result; When the real-time time is greater than the training time, adjust the gas valve (2) to the closed state, judge the timeout, the training fails, and the training ends; Conversely, adjust the gas valve (2) so that the opening degree gradually adjusts to the minimum opening degree from the current opening degree, then close the gas valve (2), judge the training success, and the training ends.

2. The gas true fire control method based on true fire firefighting training according to claim 1, characterized in that, The adjustment process of the gas valve (2) in the fire increasing transition stage in step B2 during the training process is as follows: Step B21, wherein, The opening degree of the gas valve (2) is OX, before the combustion medium is ignited, the opening degree of the gas valve (2) at this time is Omin; Step B22, after the combustion medium is ignited, enter the fire increasing transition stage, in this stage, the opening degree of the gas valve (2) is adjusted from Omin to Omax, the time used in the fire increasing transition stage is recorded as the transition time, after the completion of the fire increasing transition stage, the opening degree of the gas valve (2) is kept as Omax, at this time the fire of the combustion zone (3) enters the violent fire state, and the fire in the violent fire state is controlled within a safe range.

3. The gas true fire control method based on true fire firefighting training according to claim 1, characterized in that, In step B3 of the training process, the opening degree of the gas valve (2) is divided into 11 adjustment gears, and the division method is as follows: The gas valve opening is 0. X Where X is an integer from 1 to 11, and X is the adjustment setting corresponding to the gas valve (2), which sets the gas valve opening to O. min To O max The difference is divided into 9 equal parts, and the value is set as δ. The gas valve opening degree O 10 Then it is O max -δ*1, the gas valve opening degree O9 is O max -δ*2, and so on, the gas valve opening O2 is then O. max -δ*9, gas valve opening degree O min For O1, the gas valve opening is O. min For O 11 .

4. The gas true fire control method based on true fire firefighting training according to claim 3, characterized in that, In step B3 of the training process, the adjustment process of the gas valve (2) according to the fire extinguishing condition is as follows: Step B31, preset the decision period, the decision period is 5 seconds from the beginning to the end; Step B32, preset the specified average temperature, the specified maximum temperature difference, and the specified maximum average temperature; Step B33, each temperature sensor (6) monitors a range of monitoring area, the temperature difference of the monitoring area is the actual temperature difference, the actual temperature difference of the combustion area (3) is m, where m is the number of temperature sensors (6), the actual maximum temperature difference of the combustion area (3) and the effective average temperature can be obtained by calculation; Step B34, preset gas valve (2) gate decision criterion up, gas valve (2) gate decision criterion down , decision threshold up , decision threshold down ; Step B35, compare the effective average temperature with the specified maximum average temperature at each second within 4 seconds before the decision period, and use the comparison result as the decision criterion for the gas valve up regulation according to Step B36, compare the effective average temperature with the specified average temperature at each second within 4 seconds before the decision period, and use the comparison result as the decision criterion of the gas valve down regulation according to Step B37, at each second within 4 seconds before the decision cycle, the effective average temperature is compared with the specified maximum average temperature, and the comparison result is used as the decision criterion for the gas valve up The adjustment is based on the regulation.

5. The gas true fire control method based on true fire firefighting training according to claim 4, characterized in that, In the first 4 seconds of the preset decision cycle in step B31, the following working process is completed every second: When the calculated effective average temperature is less than the specified average temperature, the gas valve decision criterion down is incremented by Δ1, otherwise, the gas valve decision criterion down is unchanged; When the calculated actual maximum temperature difference is less than the specified maximum temperature difference, the gas valve decision criterion down is incremented by Δ2, otherwise, the gas valve decision criterion down is unchanged; When the computed effective average temperature is greater than or equal to a specified maximum average temperature, the gas valve decision criterion up is incremented by Δ3, otherwise, the gas valve decision criterion up is unchanged.

6. The gas true fire control method based on true fire firefighting training according to claim 5, characterized in that, In the 5th second of the preset decision cycle in step B31, the following working process is completed: When the gas valve decision criterion down is greater than or equal to the decision threshold down , initialize the gas valve decision criterion down , the gas valve decision criterion up and the number of consecutive non-decision periods, the gas valve decision criterion up and the number of consecutive non-decision periods, at this time the gas valve opening is O X-1 , enter the next decision period, repeat the fire extinguishing stage in step B3 until the gas valve opening is O min , enter the training end link.

7. The gas true fire control method based on true fire firefighting training according to claim 6, characterized in that, In the 5th second of the preset decision cycle in step B31, the following working process is completed: When the gas valve decision criterion down is less than the decision threshold down , the gas valve decision criterion up is compared with the decision threshold up , when the gas valve decision criterion up is greater than or equal to the decision threshold up , the gas valve (2) opening is O X+1 , the gas valve decision criterion down , the gas valve decision criterion up and the number of consecutive non-decision periods are initialized, the next decision period is entered, the fire extinguishing stage in step B3 is repeated until the gas valve opening is O min , the gas valve (2) is closed, and the training end link is entered; Conversely, the number of consecutive non-decision periods plus one period, into the next decision week, repeat the fire suppression phase in step B3, until the gas valve opening is O min After that, enter the training end link.

8. A gas true fire control method based on true fire firefighting training according to any one of claims 6-7, characterized in that, After entering the ending link, the gas valve (2) is closed, the time of the decision cycle is counted to obtain the real-time time, and the training success or failure is determined by comparing the real-time time with the training time.

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