Ignition device special for training cabin

Abstract

The utility model discloses a special ignition device for a training cabin, which comprises a rack, the rack comprises two parts, the first part of the rack is provided with a gas supply system communicated with an external combustion gas source, the second part of the rack is provided with a combustion system, and the gas supply system is connected with the combustion system through a pipeline provided with a flange. The fire behavior of the combustion system can be controlled by adjusting the propane flow according to the actual fire extinguishing training requirement, so that the purpose of meeting the training requirements of different scenes is achieved, and the fire extinguishing training device can be widely applied to the field of ship fire fighting and disaster relief training.

Description

Technical Field

[0001] This utility model relates to ship fire fighting and disaster relief training, and in particular to a special ignition device for training cabins. This device is easy to install and use, and can control the size of the fire by adjusting the propane flow rate, thus meeting the requirements of fire simulation training in different scenarios. Background Technology

[0002] Currently, there is no standard fire simulation training device in fire simulation training cabins. Traditional training methods are used to simulate fire sounds, local smoke, and small fires based on the usage scenario. Customized ignition equipment and other props are also used to simulate fires in various scenarios. However, this method can only conduct simple fire simulation training. When the training requirements are high, it is difficult to achieve the ideal training conditions, which affects the training results and makes it difficult to achieve the ideal training objectives.

[0003] Against this backdrop, researching and developing an ignition device that is easy to transport and assemble, can meet the needs of multiple scenarios and spaces, and has a high safety factor is of great practical significance. It will not only benefit the actual training requirements in the training cabin but also improve the actual fire-fighting capabilities of trainees, thereby enhancing the overall fire emergency response capabilities of the training ground. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the aforementioned background technology and provide a special ignition device for training cabins, which can control the size of the fire in the combustion system by adjusting the propane flow rate according to the actual fire extinguishing training requirements, so as to meet the training requirements of different scenarios.

[0005] This utility model provides a special ignition device for training cabins, including a stand. The stand includes two parts. The first part of the stand is equipped with a gas supply system that is connected to an external combustion gas source. The second part of the stand is equipped with a combustion system. The gas supply system and the combustion system are connected by a pipe with a flange.

[0006] In the above technical solution, the gas supply system includes a DN25 gas supply pipe connected to a DN50 gas main pipe. The output end of the DN25 gas supply pipe is provided with a ball valve connected to the input end thereto. The output end of the ball valve is provided with a first DN20 gas supply pipe. The first DN20 gas supply pipe is provided with a pressure reducing valve, a pressure relief valve and a flow regulating valve in sequence from the input end to the output end. The discharge port of the pressure relief valve is provided with a propane vent pipe connected to the atmosphere. The output end of the first DN20 gas supply pipe is connected to the combustion system through a DN25 flange.

[0007] In the above technical solution, a DN25 explosion-proof solenoid valve is provided between the flow regulating valve and the DN25 flange, and a DN20 flame arrester is provided between the DN25 explosion-proof solenoid valve and the DN25 flange.

[0008] In the above technical solution, a first three-way pipe is provided between the pressure relief valve and the flow regulating valve, and a second DN20 gas supply pipe connected to the ignition device is provided in the third passage of the first three-way pipe. The second DN20 gas supply pipe is provided with an electromagnetic pressure reducing valve and a DN8 explosion-proof electromagnetic valve in sequence.

[0009] In the above technical solution, a DN25 tee connector is provided between the DN25 explosion-proof solenoid valve and the DN20 flame arrester, and the third passage of the DN25 tee connector is connected to a DN8 nitrogen branch pipe connected to an external nitrogen gas source.

[0010] In the above technical solution, the combustion system includes a third DN20 gas supply pipe connected to a DN25 flange. The output end of the third DN20 gas supply pipe extends into a water-filled combustion basin on the platform. The combustion basin is equipped with a ring-shaped combustion tube disc connected to the third DN20 gas supply pipe. An igniter is provided at the end of the combustion basin away from the gas supply system. The air inlet of the igniter is connected to the outlet of a DN8 explosion-proof solenoid valve through a DN8 gas supply pipe. The flame nozzle of the igniter is located above the combustion tube disc. The electronic ignition element of the igniter is connected to a power supply through a DC24V terminal block.

[0011] In the above technical solution, the igniter is provided with an ignition electrode ion rod that is connected to the DN8 gas supply pipe and extends into the flame jet nozzle. The outside of the ignition electrode ion rod is provided with a flame shield covering the ignition electrode ion rod. The opening of the flame shield is connected to the inlet of the flame jet nozzle. The electronic ignition element of the igniter is a DC24V ignition transformer. The ignition end of the DC24V ignition transformer is connected to the DN8 gas supply pipe. The lower part of the DN8 gas supply pipe that extends into the igniter is provided with a downward-facing natural air inlet. A DC24V high-temperature resistant fan is provided above the natural air inlet. The air outlet of the DC24V high-temperature resistant fan (35) is horizontally set and connected to the flame shield.

[0012] In the above technical solution, there are two igniters, which are located on both sides of the end of the combustion basin away from the gas supply system. The outlet end of the DN8 explosion-proof solenoid valve is provided with a second three-way pipe. The second passage and the third passage of the second three-way pipe are respectively connected to the air inlet of the corresponding igniter through their respective DN8 gas supply pipes.

[0013] In the above technical solution, a third tee pipe is provided between the outlet end of the DN8 explosion-proof solenoid valve and the second tee pipe. The second passage of the third tee pipe is connected to the first passage of the second tee pipe. The third passage of the third tee pipe is connected to an external nitrogen source through another DN8 nitrogen branch pipe. A DN8 flame arrester is provided between the second tee pipe and the corresponding DN8 gas supply pipe. Each igniter is provided with a control box and a flame detector that extends into the flame shield. Each control box is connected to the power supply through a corresponding DC24V terminal. The DC24V ignition transformer, DC24V high-temperature fan and flame detector of each igniter are respectively connected to the corresponding control box through their respective terminals. Each control box is provided with a manual button and / or a remote control device. Temperature sensors are provided at the four corners of the combustion brazier. The signal terminal of each temperature sensor is connected to the signal terminal of the control box.

[0014] In the above technical solution, each igniter is provided with an igniter housing, which encloses the igniter's DC24V ignition transformer, control box, DC24V high-temperature fan, and corresponding wiring terminals; the combustion system includes a grille located inside the combustion fire basin and above the combustion tube coil; the side wall of the combustion fire basin is provided with a water inlet pipe, and the bottom of the combustion fire basin is provided with a water outlet; a Y-type filter is provided between the ball valve and the pressure reducing valve, and a pressure gauge is provided between the pressure reducing valve and the pressure relief valve; each DN8 nitrogen branch pipe is connected to an external nitrogen source through a quick-connect fitting; the first part of the frame is a valve support, and the second part of the frame is a combustion fire basin support.

[0015] This utility model of a dedicated ignition device for training cabins has the following beneficial effects:

[0016] This utility model can adjust the fire intensity according to the requirements of fire simulation training. It is flexible in use, highly reliable, and meets the requirements of multiple scenarios and spaces. It is also easy to install and highly safe. Specifically, it is characterized by:

[0017] 1. The flow rate of combustion gas (propane) can be adjusted to control the size of the fire, which has the advantages of being flexible and highly reliable.

[0018] 2. The use of dual igniters ensures ignition efficiency and success rate, avoiding situations where a single igniter fails to ignite or has low ignition efficiency.

[0019] 3. Easy to install: The gas supply and combustion are divided into two main parts. The length of the DN25 and DN8 gas supply branch pipes can be adjusted according to the actual use scenario to meet the usage requirements of multiple scenarios and spaces, and has the advantage of easy installation.

[0020] 4. After the simulated fire is completed, a nitrogen purging function is added to avoid propane residue in the gas supply branch pipe, ensuring high safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall design of the special ignition device for the training cabin of this utility model;

[0022] Figure 2 This is a perspective view of the overall structure of the special ignition device for the training cabin of this utility model;

[0023] Figure 3 This is a top view of the overall structure of the training cabin ignition device of this utility model;

[0024] Figure 4 This is a structural elevation view of the gas supply system in the special ignition device for training cabins of this utility model;

[0025] Figure 5 This is a structural elevation view of the combustion system in the special ignition device for training cabins of this utility model;

[0026] Figure 6 This is a schematic diagram of the igniter in the combustion system of the special ignition device for training cabins of this utility model;

[0027] Figure 7 This is a schematic diagram illustrating the working principle of the special ignition device for the training cabin of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0029] See Figures 1 to 3 The present invention relates to a special ignition device for training cabins, comprising a stand, the stand comprising two parts, the first part of the stand being provided with a gas supply system 1 connected to an external combustion gas source, and the second part of the stand being provided with a combustion system 2, the gas supply system 1 and the combustion system 2 being connected by a pipe with a flange.

[0030] See Figure 4 The gas supply system 1 includes a DN25 gas supply pipe 3 connected to a DN50 gas main pipe. The output end of the DN25 gas supply pipe 3 is provided with a ball valve 4 connected to its input end. The output end of the ball valve 4 is provided with a first DN20 gas supply pipe. The first DN20 gas supply pipe is provided with a pressure reducing valve 6, a pressure relief valve 8, and a flow regulating valve 10 in sequence from the input end to the output end. The discharge port of the pressure relief valve 8 is provided with a propane vent pipe 9 connected to the atmosphere. The output end of the first DN20 gas supply pipe is connected to the combustion system 2 through a DN25 flange 13. In this embodiment, a Y-type filter 5 is provided between the ball valve 4 and the pressure reducing valve 6, and a pressure gauge 7 is provided between the pressure reducing valve 6 and the pressure relief valve 8.

[0031] A DN25 explosion-proof solenoid valve 11 is provided between the flow regulating valve 10 and the DN25 flange 13, and a DN20 flame arrester 12 is provided between the DN25 explosion-proof solenoid valve 11 and the DN25 flange 13.

[0032] A first three-way pipe is provided between the pressure relief valve 8 and the flow regulating valve 10. The third passage of the first three-way pipe is provided with a second DN20 gas supply pipe connected to the ignition device. The second DN20 gas supply pipe is provided with an electromagnetic pressure reducing valve 16 and a DN8 explosion-proof electromagnetic valve 15 in sequence.

[0033] A DN25 tee connector 14 is provided between the DN25 explosion-proof solenoid valve 11 and the DN20 flame arrester 12. The third passage of the DN25 tee connector 14 is connected to a DN8 nitrogen branch pipe 17 connected to an external nitrogen gas source. In this embodiment, the first part of the stand is a valve support 18.

[0034] See Figure 5 The combustion system 2 includes a third DN20 gas supply pipe connected to a DN25 flange 13. The output end of the third DN20 gas supply pipe extends into a water-filled combustion basin 29 on the platform. The combustion basin 29 contains a ring-shaped combustion tube coil 28 connected to the third DN20 gas supply pipe. An igniter 23 is located at the end of the combustion basin 29 furthest from the gas supply system 1. The air inlet of the igniter 23 is connected to the outlet of a DN8 explosion-proof solenoid valve 15 via a DN8 gas supply pipe 25. The flame nozzle 31 of the igniter 23 is located above the combustion tube plate 28. The electronic ignition element of the igniter 23 is connected to the power supply through the DC24V terminal 24 (including the signal line). In this embodiment, the combustion system 2 includes a grid 22 located inside the combustion basin 29 and above the combustion tube plate 28. The side wall of the combustion basin 29 is provided with a water inlet pipe 20, and the bottom of the combustion basin 29 is provided with a water outlet 26. In this embodiment, the second part of the platform is a combustion basin support 27.

[0035] See Figure 6 The igniter 23 is provided with an ignition electrode ion rod 32 that is connected to the DN8 gas supply pipe 25 and extends into the flame jet port 31. A flame shield 41 is provided on the outside of the ignition electrode ion rod 32 to cover it. The opening of the flame shield 41 is connected to the inlet of the flame jet port 31. The electronic ignition element of the igniter 23 is a DC24V ignition transformer 33. The ignition end of the DC24V ignition transformer 33 is connected to the DN8 gas supply pipe 25. A downward-facing natural air inlet 36 is provided below the section of the DN8 gas supply pipe 25 that extends into the igniter 23. A DC24V high-temperature resistant fan 35 is provided above the natural air inlet 36. The air outlet of the DC24V high-temperature resistant fan 35 is horizontally set and connected to the flame shield 41.

[0036] See Figure 2 , Figure 3 and Figure 5 There are two igniters 23, which are located on both sides of the end of the combustion basin 29 away from the gas supply system 1. The outlet end of the DN8 explosion-proof solenoid valve 15 is provided with a second three-way pipe. The second passage and the third passage of the second three-way pipe are respectively connected to the air inlet of the corresponding igniter 23 through their respective DN8 gas supply pipes 25.

[0037] See Figures 2 to 6 A third tee pipe is provided between the outlet end of the DN8 explosion-proof solenoid valve 15 and the second tee pipe. The second passage of the third tee pipe is connected to the first passage of the second tee pipe. The third passage of the third tee pipe is connected to an external nitrogen source through another DN8 nitrogen branch pipe 17. A DN8 flame arrester 30 is provided between the second tee pipe and the corresponding DN8 gas supply pipe 25. Each igniter 23 is provided with a control box 34 and a flame detector 40 that extends into the flame shield 41. Each control box 34 is connected to a power supply through a corresponding DC24V terminal 24. Each igniter 23 has a DC24V ignition transformer 33, a DC24V high-temperature fan 35, and a flame detector. Each detector 40 is connected to its corresponding control box 34 via its respective terminal block 38. Each control box 34 is equipped with a manual button and / or a remote control device. Temperature sensors are provided at the four corners of the combustion brazier 29. The signal terminal of each temperature sensor is connected to the signal terminal of the control box 34. In this embodiment, the temperature sensor is a thermocouple 21. Each igniter 23 is provided with an igniter housing 39. Each igniter housing 39 encloses the DC24V ignition transformer 33, control box 34, DC24V high-temperature fan 35, and corresponding terminal block 38 of the igniter 23. Each DN8 nitrogen branch pipe 17 is connected to an external nitrogen source via a quick-connect connector 19.

[0038] I. Design Concept

[0039] 1. Overall Scheme Design

[0040] Based on the training scenario, this utility model can meet the requirements of dual-ignition training in the training cabin, and its working principle is as follows: Figure 7 As shown:

[0041] The actual working status is as follows:

[0042] 1) Gas supply from combustion coil 28: The DN50 gas main pipe supplies gas through the gas supply system 1, and transmits propane through the first DN20 gas supply pipe to ball valve 4, Y-type filter 5, pressure reducing valve 6, pressure gauge 7, pressure relief valve 8, flow regulating valve 10, DN25 explosion-proof solenoid valve 11, and DN20 flame arrester 12.

[0043] 2) Igniter 23 gas supply: The DN50 gas main pipe supplies gas through the gas supply system 1, and the propane is transmitted through the first DN20 gas supply pipe and the second DN20 gas supply pipe to the ball valve 4, Y-type filter 5, pressure reducing valve 6, pressure gauge 7, pressure relief valve 8, second DN20 gas supply pipe, electromagnetic pressure reducing valve 16, DN8 explosion-proof solenoid valve 15, and then enters the DN8 flame arrester 30 in two ways, and then enters the igniter 23.

[0044] 3) System self-test: According to the actual training requirements, temperature measuring points, CO, CO2, and O2 concentration measuring points are arranged around the combustion part of combustion system 2 to detect information. Ignition is performed when the conditions are met.

[0045] 4) Ignition: Ignition is performed using a remote control igniter 23. An ignition command is sent remotely through the control box 34 or the console port. The igniter internally controls the ignition electrode through the DC24V ignition transformer 33 to ignite the propane in the flame nozzle 31 of the igniter 23. After the flame burns, it ignites the propane in the combustion basin 29.

[0046] 5) Fire Extinguishing: After completing the training according to actual requirements, fire extinguishing shall be carried out. Cut off the gas supply of the DN50 propane main pipe, and at the same time remotely control and close the DN25 explosion-proof solenoid valve 11 and the DN8 explosion-proof solenoid valve 15. Trainees shall enter the site and use CO2 fire extinguishers to extinguish the fire.

[0047] 6) Propane removal: After the fire is extinguished, in order to prevent residual propane from the second DN20 gas supply pipe and the DN8 gas supply pipe 25, a DN8 nitrogen branch pipe 17 is connected to the front end of the DN8 flame arrester 30 to purge the propane with nitrogen. At the same time, the smoke and ventilation system in the training cabin is turned on to remove any propane that may be present in the training cabin.

[0048] 7) Condensate removal: After the fire is extinguished, drain the water from the combustion pan 29. After the combustion coil 28 has cooled down, use the DN8 nitrogen branch pipe 17 to remove any condensate that may be present in the combustion coil 28.

[0049] Based on the actual application scenario, this dual ignition device consists of two main parts: gas supply system 1 and combustion system 2. Considering the safety of gas supply system 1 and combustion system 2, the two parts can be designed separately and integrated, with a DN25 flange 13 used for connection. The technical solution is as follows:

[0050] 2. Gas supply system 1

[0051] 2.1 Gas Supply System 1 Composition

[0052] The gas supply system 1 mainly consists of an external propane cylinder (not shown in the figure), a DN25 gas supply pipe 3, a ball valve 4, a Y-type filter 5, a pressure reducing valve 6, a pressure gauge 7, a pressure relief valve 8, a flow regulating valve 10, a DN25 explosion-proof solenoid valve 11 (which has a built-in emergency shut-off valve), a DN20 flame arrester 12, a DN25 flange 13 (with a sealing plate), and a valve bracket 18, etc., to ensure the combustion of the combustion system 2 and to take measures to ensure the safety of gas storage and supply.

[0053] 2.2 Gas Supply System 1 Functions

[0054] Its main function is to provide gas supply for the burner of combustion system 2. In actual application, it is installed in a centralized gas supply chamber (not shown in the figure) or a stratified gas supply chamber (not shown in the figure) in the training cabin (not shown in the figure). The safe distance between gas supply system 1 and the burner of combustion system 2 is preferably controlled at 10m. It is delivered through an external centralized gas supply pipeline and then centrally distributed to gas supply system 1. The gas supply flow rate is adjusted by regulating ball valve 4, pressure reducing valve 6, pressure relief valve 8, and flow regulating valve 10 to meet the combustion needs of different burner fire sizes in different scenarios.

[0055] The main functions are as follows:

[0056] 1) Propane is supplied to the combustion coil 28 within the combustion brazier 29 for combustion;

[0057] 2) Provide gas to igniter 23;

[0058] 3) Remove any residual propane from the pipe fittings after training;

[0059] 4) To prevent condensate from being drawn back into the DN25 combustion coil 28 and the DN25 gas supply pipe 3 after fire extinguishing, a DN8 nitrogen branch pipe 17 is added to the gas supply system 1 to remove any possible condensate.

[0060] 3. Combustion System 2

[0061] 3.1 Combustion System 2

[0062] The combustion system 2 consists of a combustion basin 29, a combustion tube coil 28, a grille 22, water, an igniter 23, a thermocouple 21, and a combustion basin support 27.

[0063] 3.2 Combustion System 2 Functions

[0064] To provide a fire source for fire extinguishing training, propane gas is distributed to the gas supply system 1 through a multi-stage distribution. The propane gas is supplied in two parts: one part supplies gas to the combustion coil 28, and the other part supplies gas to the igniter 23. After the propane is ignited by the igniter 23, the fire is sprayed into the combustion basin 29. The combustion coil 28 in the combustion basin 29 ignites the propane discharged from the water, creating an environment for fire spread. At the same time, four thermocouples 21 (i.e., temperature sensors) are set in the combustion area to detect the size of the fire. The size of the fire can be judged based on the temperature of the thermocouples 21 to meet the training requirements of different scenarios.

[0065] 4. Combustion control section

[0066] The dual ignition device used in this invention employs both remote and on-site manual control to meet training requirements in real-world environments. The control unit includes the following components:

[0067] 4.1 Safety Self-Check Module

[0068] The fire extinguishing training system is equipped with a safety self-check module, which must complete a self-check procedure before operation. This module is mainly used to check the status of each device within the system. Before operation, the system automatically checks the training environment parameters, equipment operating status, initial status of each device, and whether the equipment is intact, ensuring that the training facilities can be started and operated safely and smoothly.

[0069] It can monitor the signal of the combustible gas concentration detector in the gas storage chamber.

[0070] It can detect the status of the emergency shut-off valve of the main gas supply line.

[0071] It can monitor temperature measurement points, CO, CO2, and O2 concentration measurement points at all locations.

[0072] The safety self-test module consists of a combustible gas concentration detector, an emergency shut-off valve status detection module, a proximity switch status detection module, an equipment operation power-on detection module, and temperature, CO, CO2, and O2 concentration detection modules.

[0073] 4.2 Ignition Control Module

[0074] The ignition control module is used to ensure that the fire extinguishing training system can perform ignition operations safely and effectively.

[0075] It can switch between two control modes: console control and remote control box control.

[0076] Monitor the fire water pressure on the main fire pipe and the pressure on the propane gas supply main pipe.

[0077] When ignition is successful, the console will display the result. If ignition fails, the propane purging ventilation system will be activated and an alarm message will be displayed.

[0078] The ignition control module is controlled by an ignition button and a controller, and consists of a fire water and propane gas supply main pressure detection module, an ignition device cooling spray module, a combustion device water supply module, a nitrogen purging module, an ignition gas supply module, an ignition device air supply module, an ignition status detection module, and a temperature detection module.

[0079] 1) Start the ignition procedure by setting the ignition start button on the remote control button box (not shown in the figure) or the combustion control box (not shown in the figure).

[0080] 2) The system detects the fire water pressure on the main fire hose and the pressure on the main propane gas supply hose. If the propane branch supply pressure is not less than 0.1 MPa and the fire hydrant water pressure is not less than 0.5 MPa, proceed to the next step. If the detection results are abnormal, stop the ignition procedure and display an alarm message.

[0081] 3) Simultaneously start the following devices and subsystems:

[0082] ① Connect the cooling water supply valve of the ignition device (not shown in the figure) to provide cooling water spray protection for the special ignition device of the training cabin of this utility model.

[0083] ② Connect the water supply solenoid valve of the burner water supply device (not shown in the figure) to force water supply to the combustion fire basin 29 for 20 seconds.

[0084] ③ Connect the propane purging ventilation system (not shown in the figure) to pre-exhaust the training chamber to ensure that the concentration of residual combustible gas in the training chamber is reduced to the minimum. The exhaust time is 120 seconds.

[0085] ④ Connect the water supply solenoid valve (not shown in the figure) of the spray cooling system on the outer wall of the training chamber to ensure that the chamber is in a cooling protection state before combustion.

[0086] 4) After the above four measures are in normal operation, the special ignition device for training cabins of this utility model enters the ignition condition standby procedure.

[0087] 5) Connect the gas supply solenoid valve of the special ignition device for the training cabin of this utility model, and the DN25 gas supply pipe 3 of the special ignition device for the training cabin of this utility model supplies propane gas to the combustion system 2.

[0088] 6) Turn on the pressurizing fan (not shown in the figure) to supply air to the special ignition device for the training cabin of this utility model. When the pressurizing fan fails, stop the ignition procedure and display alarm information.

[0089] 7) Connect the power supply to the high-voltage igniter 23 of the combustion system 2 to ignite the igniter 23. The flame detector 40 installed inside the igniter 23 detects and determines whether the combustion system 2 ignites successfully. When the combustion system 2 ignites successfully, an ignition success command is sent to the combustion control box. When the combustion system 2 fails to ignite, the CAN control system (not shown in the figure) immediately shuts off the DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 of the training cabin-specific ignition device of this utility model, as well as the power supply to the high-voltage igniter 23, stops the ignition procedure, activates the propane purging ventilation system, and displays alarm information.

[0090] 8) Upon receiving the ignition success command, the combustion control box immediately activates the DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 supplying propane gas to combustion system 2, igniting the combustion coil 28. The ignition success of the combustion coil 28 is determined by detecting the temperature change value of the temperature sensor located in the combustion zone of the combustion coil 28. When the temperature detection of the combustion coil 28 conforms to the preset pattern (with an appropriate delay of 2-3 seconds), i.e., when the set value is reached within the specified time, an ignition success signal is sent to the control panel (not shown in the figure). If the temperature detection is abnormal after activating the DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 supplying propane gas to the combustion coil 28, it indicates that the ignition of the combustion coil 28 has failed. The DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 supplying propane gas to the combustion coil 28 are immediately closed, the ignition procedure is stopped, the propane purging ventilation system is activated, and an alarm message is displayed. If the ignition device for the training cabin fails to ignite or the combustion coil 28 fails to ignite, the gas supply to the main gas pipe must be cut off, and the emergency gas shut-off valves (DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15) must be closed.

[0091] 4.3 Combustion Control Module

[0092] The combustion control module is mainly used to handle various abnormal events that occur during the combustion process in the compartment.

[0093] By using diagonally arranged temperature sensors in the training chamber to monitor the temperature in real time, it can be determined whether the temperature in the training chamber is within the safe range for practice.

[0094] 1) When the temperature sensor reading exceeds the safe value of 260℃, the high-temperature exhaust fan (not shown in the figure) will be started immediately at medium speed, and a temperature over-limit alarm will be issued. The exercise will then proceed normally.

[0095] 2) When the temperature measured by the 1.5m temperature sensor exceeds 310℃ in the training cabin, the combustion program is immediately stopped, the DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 supplying propane to the combustion coil 28 and the special ignition device for the training cabin of this utility model are cut off, the main pipe and branch gas supply are cut off, the special ignition device for the training cabin of this utility model is shut off, the propane purging ventilation system is turned on, the high temperature ventilation system runs at full speed, and alarm information is displayed.

[0096] 3) By using a combustible gas sensor installed in the training chamber to monitor the concentration of combustible gas in real time, the system determines whether the concentration is within a safe range. If the concentration exceeds the safe limit of 10% LEL, a pre-alarm is triggered, and the purge fan is activated. When the concentration reaches 15% LEL, the training is stopped, and the DN25 explosion-proof solenoid valve 11 and DN8 explosion-proof solenoid valve 15 supplying propane to the combustion coil 28 are immediately shut off. The training is stopped, and the alarm continues. Simultaneously, the propane purging ventilation system is activated to force ventilation of the training chamber for 120 seconds. After confirming that the propane exceedance has subsided, the propane emergency shut-off valve is manually reset, and the training restarts. When a 15% LEL alarm signal is issued, the alarm information must be transmitted to the control console, and the alarm signal must be manually deactivated.

[0097] 4) Detect the oxygen concentration sensor (not shown in the diagram) installed in the training chamber. Once the oxygen concentration in the training chamber air falls below the set value of 19%, activate the make-up air exhaust ventilation system and the propane scavenging ventilation system to force ventilation into the chamber. Simultaneously, open the corresponding ventilation grilles to ensure that the oxygen concentration in the air remains within the set value range. During live fire practice, the exhaust fan operates at low speed to ensure the fresh air required for combustion.

[0098] 5) During combustion, the instructor can manually or by computer pre-set the opening of the gas electric regulating valve to change the flame height via a remote control button.

[0099] 6) During combustion, the instructor can manually or according to a pre-set program close the propane supply solenoid valve via the remote control button box to stop the combustion process.

[0100] 7) After the combustion program is stopped, the instructor can manually run the combustion program again or multiple times via the remote control box or according to the pre-set program to achieve repeated combustion process.

[0101] 8) In the event of any abnormalities involving personnel or equipment during practice, the instructor must immediately press the emergency stop button. After pressing the emergency stop button, immediately shut off the DN25 explosion-proof solenoid valve 11 and the DN8 explosion-proof solenoid valve 15 supplying propane to the combustion coil 28. The combustion process will immediately cease. Simultaneously, activate the make-up air ventilation system and the propane scavenging ventilation system to force ventilation of the compartment for 120 seconds, activate the alarm bell, turn on the emergency lighting system, and then activate the compartment spray cooling system for 60 seconds. Ensure that the compartment temperature and combustible gas concentration meet safety requirements. The emergency gas shut-off valve must be manually reset, and the emergency shut-off alarm signal must be manually cleared.

[0102] 4.4 Fire Extinguishing Process Follow-up Module

[0103] The fire extinguishing effect is evaluated and adjusted by three indicators: fire extinguishing agent coverage, fire extinguishing behavior and fire resistance, and fire extinguishing time.

[0104] Evaluation indicators for effective coverage of extinguishing agent: the rate of temperature drop and the time the temperature remains after the temperature sensor in combustion system 2 is exposed to water.

[0105] Firefighting behavior and fire resistance indicators: The temperature information collected by the compartment temperature sensor tree is compared with the temperature field change characteristics during the firefighting process.

[0106] Time indicators for firefighting operations: The firefighting time is set for different levels of combustion of the burning object. If the maximum set time is exceeded, the firefighting fails, and the trainee enters the firefighting practice area as the start time for the practice.

[0107] II. Manufacturing Scheme for the Dual Ignition Device Test Apparatus

[0108] The manufacturing plan for this device is as follows:

[0109] 1. Material and equipment selection

[0110] 1.1 The valve bracket and fire basin bracket are made of 50*50*5mm square tubing, and the grille is made of 5mm thick Q235 sheet metal.

[0111] 1.2. The gas supply pipe is made of marine-grade DN25 and DN8 stainless steel pipe. Other parts such as ball valve 4, quick-connect coupling 19, Y-type filter 5, pressure reducing valve 6, pressure gauge 7, pressure relief valve 8, flow regulating valve 10, DN25 explosion-proof solenoid valve 11, DN20 flame arrester 12, DN25 flange 13, thermocouple 21, etc. are standard parts or mature and commonly used parts on the market.

[0112] 1.3 Igniter 23 is a custom part. The igniter housing 39 and the flame shield 41 are made of stainless steel plates. The internal components such as DC24V ignition transformer 33, DC24V high temperature fan 35 (DC24V fan), high temperature ceramic ignition electrode ion rod 32, flame detector 40, and wiring control box 34 are mature products on the market and are assembled according to the design drawings.

[0113] 2. Production process

[0114] The valve bracket 18 and the combustion brazier bracket 27 are welded. The ball valve 4, quick connector 19, Y-type filter 5, pressure reducing valve 6, pressure gauge 7, pressure relief valve 8, flow regulating valve 10, DN25 explosion-proof solenoid valve 11, DN20 flame arrester 12, and DN25 flange 13 are made of stainless steel pipe welding or flange butt welding. The igniter housing 39 is welded from stainless steel plate. The flame shield 41 is welded from stainless steel plate. The internal components such as DC24V ignition transformer 33, DC24V high-temperature fan 35 (DC24V fan), high-temperature ceramic ignition electrode ion rod 32, flame detector 40, and wiring control box 34 are installed with M4 screws 37. Thermocouple 21 is fixed to the outer side wall of combustion brazier 29 with M4 screws 37. Other power lines and signal control lines are fixed with cable ties. The wiring is reasonably arranged according to the site layout.

[0115] This utility model has the following features:

[0116] 1. It has good flexibility. The gas supply system 1 can be integrated or distributed to different floors of the training cabin according to actual training requirements and site requirements, which avoids insufficient space in some training cabins and breaks through space limitations.

[0117] 2. It has good ignition characteristics and can improve ignition efficiency. This utility model is designed with two igniters 23, which improves the overall training efficiency in actual training scenarios and avoids propane overflow in the combustion tube 28 due to the failure of a single igniter 23 to ignite, thereby causing training to stop or increasing the propane scavenging time.

[0118] 3. Improved safety: After the fire extinguishing training in the training chamber is completed, in order to prevent the residual heat from causing condensate to be drawn back into the tube coil, nitrogen purging is added to remove the condensate in the combustion tube coil 28. This prevents water accumulation in the combustion tube coil 28 during the next training session, which could prevent propane from being discharged from the combustion tube coil 28 and cause propane leakage and explosion.

[0119] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0120] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A training pod specific ignition device comprising a gantry, characterized by: The test bench comprises two parts. The first part of the test bench is equipped with a gas supply system (1) that is connected to an external combustion gas source. The second part of the test bench is equipped with a combustion system (2). The gas supply system (1) and the combustion system (2) are connected by a pipeline with a flange.

2. The training pod dedicated ignition device of claim 1, wherein: The gas supply system (1) includes a DN25 gas supply pipe (3) connected to a DN50 gas main pipe. The output end of the DN25 gas supply pipe (3) is provided with a ball valve (4) connected to the input end. The output end of the ball valve (4) is provided with a first DN20 gas supply pipe. The first DN20 gas supply pipe is provided with a pressure reducing valve (6), a pressure relief valve (8) and a flow regulating valve (10) in sequence from the input end to the output end. The discharge port of the pressure relief valve (8) is provided with a propane venting pipe (9) connected to the atmosphere. The output end of the first DN20 gas supply pipe is connected to the combustion system (2) through a DN25 flange (13).

3. The training pod dedicated ignition device of claim 2, wherein: A DN25 explosion-proof solenoid valve (11) is provided between the flow regulating valve (10) and the DN25 flange (13), and a DN20 flame arrester (12) is provided between the DN25 explosion-proof solenoid valve (11) and the DN25 flange (13).

4. The training pod dedicated ignition device of claim 3, wherein: A first three-way pipe is provided between the pressure relief valve (8) and the flow regulating valve (10). The third passage of the first three-way pipe is provided with a second DN20 gas supply pipe connected to the ignition device. The second DN20 gas supply pipe is provided with an electromagnetic pressure reducing valve (16) and a DN8 explosion-proof electromagnetic valve (15) in sequence.

5. The training pod dedicated ignition device of claim 4, wherein: A DN25 tee connector (14) is provided between the DN25 explosion-proof solenoid valve (11) and the DN20 flame arrester (12). The third passage of the DN25 tee connector (14) is connected to a DN8 nitrogen branch pipe (17) that is connected to an external nitrogen gas source.

6. The training pod dedicated ignition device of claim 5, wherein: The combustion system (2) includes a third DN20 gas supply pipe connected to a DN25 flange (13). The output end of the third DN20 gas supply pipe extends into a water-filled combustion basin (29) on the platform. The combustion basin (29) is provided with a ring-shaped combustion tube disc (28) connected to the third DN20 gas supply pipe. An igniter (23) is provided at the end of the combustion basin (29) away from the gas supply system (1). The air inlet of the igniter (23) is connected to the outlet of a DN8 explosion-proof solenoid valve (15) through a DN8 gas supply pipe (25). The flame nozzle (31) of the igniter (23) is located above the combustion tube disc (28). The electronic ignition element of the igniter (23) is connected to a power supply through a DC24V terminal (24).

7. The training pod dedicated ignition device of claim 6, wherein: The igniter (23) is provided with an ignition electrode ion rod (32) that is connected to the DN8 gas supply pipe (25) and extends into the flame jet port (31). The ignition electrode ion rod (32) is provided with a flame shield (41) covering the ignition electrode ion rod (32) on the outside. The opening of the flame shield (41) is connected to the inlet of the flame jet port (31). The electronic ignition element of the igniter (23) is a DC24V ignition transformer (33). The ignition end of the DC24V ignition transformer (33) is connected to the DN8 gas supply pipe (25). The lower part of the DN8 gas supply pipe (25) that extends into the igniter (23) is provided with a downward-facing natural air inlet (36). A DC24V high-temperature fan (35) is provided above the natural air inlet (36). The air outlet of the DC24V high-temperature fan (35) is horizontally set and connected to the flame shield (41).

8. The training pod dedicated ignition device of claim 7, wherein: There are two igniters (23), which are located on both sides of the end of the combustion basin (29) away from the gas supply system (1). The outlet end of the DN8 explosion-proof solenoid valve (15) is provided with a second three-way pipe. The second passage and the third passage of the second three-way pipe are respectively connected to the air inlet of the corresponding igniter (23) through their respective DN8 gas supply pipes (25).

9. The training pod dedicated ignition device of claim 8, wherein: A third three-way pipe is provided between the outlet end of the DN8 explosion-proof solenoid valve (15) and the second three-way pipe. The second passage of the third three-way pipe is connected to the first passage of the second three-way pipe. The third passage of the third three-way pipe is connected to an external nitrogen source through another DN8 nitrogen branch pipe (17). A DN8 flame arrester (30) is provided between the second three-way pipe and the corresponding DN8 gas supply pipe (25). Each igniter (23) is provided with a control box (34) and a flame detector (40) that extends into the flame shield (41). Each control box (34) Connected to the power supply through the corresponding DC24V terminal (24), the DC24V ignition transformer (33), DC24V high temperature fan (35) and flame detector (40) of each igniter (23) are connected to the corresponding control box (34) through their respective terminals (38). Each control box (34) is equipped with a manual button and / or a remote control device. Temperature sensors are provided at the four corners of the combustion fire basin (29), and the signal terminal of each temperature sensor is connected to the signal terminal of the control box (34).

10. The training pod dedicated ignition device of claim 9, wherein: Each igniter (23) has an igniter housing (39), and each igniter housing (39) encloses the DC24V ignition transformer (33), control box (34), DC24V high temperature fan (35) and corresponding wiring terminals (38) of the igniter (23); The combustion system (2) includes a grid (22) disposed inside the combustion fire basin (29) and above the combustion tube plate (28); the side wall of the combustion fire basin (29) is provided with a water inlet pipe (20), and the bottom of the combustion fire basin (29) is provided with a water outlet (26). A Y-type filter (5) is arranged between the ball valve (4) and a pressure reducing valve (6), a pressure gauge (7) is arranged between the pressure reducing valve (6) and a pressure relief valve (8), and each DN8 nitrogen branch pipe (17) is connected with an external nitrogen source through a quick connector (19). The first part of the stand is a valve support (18), and the second part of the stand is a combustion fire pan support (27).

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