CN115060844B - A long tube trailer IV type hydrogen storage cylinder fire test system - Google Patents
A long tube trailer IV type hydrogen storage cylinder fire test system Download PDFInfo
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- CN115060844B CN115060844B CN202210507858.1A CN202210507858A CN115060844B CN 115060844 B CN115060844 B CN 115060844B CN 202210507858 A CN202210507858 A CN 202210507858A CN 115060844 B CN115060844 B CN 115060844B
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000001257 hydrogen Substances 0.000 title claims abstract description 28
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 110
- 238000002485 combustion reaction Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 3
- 102100029211 E3 ubiquitin-protein ligase TTC3 Human genes 0.000 claims abstract 6
- 101000633723 Homo sapiens E3 ubiquitin-protein ligase TTC3 Proteins 0.000 claims abstract 6
- 239000000446 fuel Substances 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000012806 monitoring device Methods 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000005341 toughened glass Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 35
- 208000028659 discharge Diseases 0.000 description 9
- 238000002955 isolation Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000743 fusible alloy Inorganic materials 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Combustion & Propulsion (AREA)
- Water Supply & Treatment (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
本发明涉及建材技术领域，旨在提供一种长管拖车IV型储氢气瓶火烧试验系统。该系统包括火烧测试系统、控制系统和安全防护装置；其中，火烧测试系统包括设于底座中的燃烧装置，在待测气瓶的至少一个端部设有温度驱动安全泄压装置TPRD；控制系统包括控制终端和数据采集设备，数据采集设备通过信号线连接控制终端，以及设于火烧测试系统中的各类信号检测设备和电控设备；该试验系统还包括由气源增压子系统和泄放子系统组成的增压泄放系统。本发明可在满足测试所需的局部火源长度且不调整结构的情况下，同时满足不同类型长管拖车用气瓶局部火烧与整体火烧测试的需求。可相对其余装置设置更高的充气流量，减少大容积气瓶增压过程中的温升。
The present invention relates to the field of building materials technology, and aims to provide a long tube trailer IV type hydrogen storage cylinder fire test system. The system includes a fire test system, a control system and a safety protection device; wherein the fire test system includes a combustion device arranged in a base, and a temperature-driven safety pressure relief device TPRD is provided at at least one end of the gas cylinder to be tested; the control system includes a control terminal and a data acquisition device, the data acquisition device is connected to the control terminal through a signal line, and various signal detection devices and electronic control devices arranged in the fire test system; the test system also includes a pressurization and discharge system composed of a gas source pressurization subsystem and a discharge subsystem. The present invention can meet the needs of local fire and overall fire tests of gas cylinders for different types of long tube trailers while meeting the local fire source length required for the test and without adjusting the structure. A higher inflation flow rate can be set relative to other devices to reduce the temperature rise during the pressurization process of large-volume gas cylinders.
Description
Technical Field
The invention relates to a hydrogen storage pressure container testing technology, in particular to a fire test system for an IV-type hydrogen storage cylinder of a long tube trailer, which is mainly used for testing the fire resistance of the IV-type hydrogen storage cylinder of the long tube trailer.
Background
The hydrogen energy has the characteristics of various sources, high utilization efficiency, cleanness, environmental protection, high heat value, storability, and the like, and is a main carrier for constructing a multi-element energy supply system taking clean energy as a main source. Compared with the traditional small gas cylinder transportation, the long pipe trailer has the advantages that the gas cylinder bearing pressure is high, the volume is large, the transportation efficiency is greatly improved, and the transportation cost is reduced. The hydrogen storage bottle made of the plastic liner fiber fully-wound composite material (hereinafter referred to as an IV type hydrogen storage bottle) has the characteristics of light weight, high pressure bearing capacity, high corrosion resistance and the like, and is one of the important development directions of the high efficiency of the long-tube trailer.
Once the pneumatic brake block of the rear tire fails in the service process of the long tube trailer, the pneumatic brake block is in a wearing state for a long time in the running process, so that fire disasters can be caused, and the local flame of the tire is gradually expanded to the integral flame in the range of the gas cylinder. When a fire accident occurs, the IV-type hydrogen storage bottle can have failure modes such as decomposition of a composite material layer, melting of a plastic liner and the like, so that the hydrogen leakage and even explosion of the bottle occur, and serious harm is caused. At present, the current composite material hydrogen storage bottle standards in China, including national standard GB/T35544 and national standard IV hydrogen storage bottle group standard TCATSI 02007 of the type III hydrogen storage bottle, the specified application range cannot meet the requirement of a hydrogen storage bottle fire test with the volume exceeding 450L, while the foreign standard ISO 11515 provides a fire resistance test method of an IV type pipeline, provides a certain reference for the fire resistance test of the IV type hydrogen storage bottle of a long tube trailer, and at present, no long tube trailer IV type hydrogen storage bottle fire test method is formed in the system at home and abroad. Meanwhile, the existing composite material hydrogen storage bottle test systems, such as CN201710461175.6, CN202110804123.0 and other patent systems, are designed aiming at vehicle-mounted III/IV hydrogen storage bottles, and are difficult to meet the requirement of testing the fire resistance of the large-length-diameter-ratio and large-capacity IV hydrogen storage bottles for long-tube trailers. If referring to TCATSI 02007, a local fire source should be set at the furthest distance from the safety relief device for a gas cylinder provided with 1 temperature-driven safety relief device (hereinafter referred to as TPRD), and a local fire source should be set at the middle of the gas cylinder for a gas cylinder provided with TPRD at both ends, meanwhile, the system needs to consider the whole fire of the gas cylinder, referring to ISO 11515, the length of the local fire source of a long-tube trailer IV type gas cylinder greater than 450L should be 1.65 meters, and the fuel supply system and the combustion row design of the existing system cannot meet the fire test requirements of two structural types of long-tube trailer IV type hydrogen storage gas cylinders at the same time. Meanwhile, aiming at the characteristic of large capacity of the gas cylinder of the long-tube trailer, the pressurizing system ensures quick pressure rise and simultaneously needs to control the temperature rise of the gas in the cylinder. Further, the fire test bed commonly used is by two kinds of forms of gas fire source and liquid fire source, and gas fire source flame size is controllable and flame distribution is inhomogeneous relatively and receives the environment to be great, and liquid fire source distribution is even relatively and receives the environment to influence less, and long tube trailer gas cylinder size is bigger than on-vehicle bottle, needs to rationally select the fire source type according to test gas cylinder size, test requirement and test environment, and current experimental apparatus can't switch between gas fire source and liquid fire source. Therefore, there is a need to develop a safe and controllable fire test system suitable for a long tube trailer type IV hydrogen storage cylinder.
Disclosure of Invention
The invention aims to solve the problem of overcoming the defects in the prior art and providing a fire test system for an IV-type hydrogen storage cylinder of a long tube trailer.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
the invention provides a fire test system of an IV-type hydrogen storage cylinder of a long tube trailer, which comprises a fire test system, a control system and a safety protection device, wherein the fire test system comprises a base for placing a cylinder to be tested and a combustion device arranged in the base, and at least one end part of the cylinder to be tested is provided with a temperature-driven safety pressure relief device TPRD;
The air source pressurizing subsystem comprises a test air source, a pressure regulating valve, an electric control valve, a one-way valve, an air filter, an air pressurizing device, a safety valve, a cooler, a flow limiting valve, a one-way valve and an electromagnetic valve which are sequentially connected through pipelines, wherein the battery valve is connected with a pressurizing port of the air bottle;
The discharging subsystem comprises three groups of pipelines, namely a normal discharging pipeline provided with a pressure sensor and a one-way valve, an emergency discharging pipeline provided with a solenoid valve and a pressure maintaining pipeline provided with a pressure holding valve and a solenoid valve, wherein one end of the normal discharging pipeline is connected to a discharging port of the TPRD, one end of the emergency discharging pipeline is connected to a gas cylinder pressurizing port, one end of the pressure maintaining pipeline is connected between the one-way valve and the solenoid valve, and the other ends of the three pipelines are connected to the discharging port through the one-way valve.
Brief description of the principles of the invention:
The invention relates to a fire test system of an IV-type hydrogen storage cylinder of a long tube trailer, which mainly comprises a fire test system, a control system, a safety protection device, a pressurizing and discharging system and a secondary discharging system. The gas cylinder to be tested is arranged on the supporting structure, and the supporting structure can slide along the sliding rail in the base. Meanwhile, the fuel supply pipeline consists of a gas fuel gas source and a plurality of pipelines which can be regulated in parallel connection through valves, and each pipeline is connected with a throttle valve, a flowmeter and a one-way valve. The combustion bank is divided into a plurality of parts, and the position of the local fire source can be changed by adjusting the valve. The fire testing system is provided with a safety isolation device built by a reinforced concrete structure at the outermost side, a spraying fire extinguishing device is arranged above the safety isolation device, and an observation window formed by toughened glass is arranged at the side, far away from the person, of the safety isolation device.
The pressurizing and discharging system comprises a pressurizing subsystem and a discharging subsystem, wherein a cold water tank is arranged in the pressurizing subsystem to cool the boosted gas, and the cold water tank is externally connected to a spraying fire extinguishing device arranged above the safety isolation device. The release subsystem comprises a normal release pipeline, an emergency release pipeline and a pressure maintaining pipeline, wherein the normal release pipeline is connected with a release port of a gas cylinder temperature control pressure release device (TPRD), and the emergency release pipeline is connected with a gas cylinder inflation port in the pressure maintaining pipeline. The pressure maintaining pipeline is provided with a pressure maintaining valve, an electric control valve and a one-way valve, and is connected to the discharge port.
The invention also comprises a secondary discharge system, wherein the secondary discharge system is provided with a hot air blower, and can melt fusible alloy in emergency, and the system is started only when the gas cylinders with safety discharge devices at two ends are tested.
According to the invention, data of all valves except the manual valve, the ignition device, the temperature sensors, the pressure sensors, the flowmeter, the pressure gauge and the video monitoring device are collected and stored by the data collecting equipment and then transmitted to the control terminal through the data line, and the ignition device, the opening and closing states of the valves and the shooting angle of the video monitoring device are controlled by the control terminal.
Compared with the prior art, the invention has the following advantages:
(1) The invention can open and close the valves, adjust a plurality of fuel supply pipelines, and coordinate and adjust the positions of the valves arranged at the combustion exhaust/combustion pool and the gas cylinder supporting structure, thereby meeting the requirements of the test of the local fire and the whole fire of the gas cylinders for different types of long tube trailers under the condition of meeting the local fire length required by the test and not adjusting the structure. In addition, the combustion exhaust/combustion pool is connected with the test bed base in a bolt fastening mode, and can be quickly and simply replaced to realize a gas fire source fire test and a liquid fire source fire test.
(2) The gas water-cooling device consisting of the cold water tank, the water pump and the heat exchanger is arranged in the pressurizing pipeline, so that higher air charging flow can be arranged relative to other devices, the temperature rise of the large-volume air bottle in the pressurizing process is reduced, the pressure drop caused by gas cooling in the pressure maintaining process is reduced, and the safety problem caused by rapid air charging temperature rise is prevented. In addition, the pressure maintaining pipeline comprising the pressure maintaining valve, the electric control valve and the one-way valve can simply and rapidly fill the gas cylinder to the pressure required by the test on the basis of saving the test gas as much as possible.
(3) A spray fire extinguishing device is arranged above the safety isolation device, the device is supplied with water by a cold water tank and a water pump in the pressurizing and discharging system, and the device can be used for remotely controlling fire extinguishment under the conditions that the gas cylinder winding layer is still burning after the test is interrupted and the fuel supply of combustion discharge is cut off, and the like, so that the safety problem caused by an emergency is reduced as much as possible.
(4) Besides a discharge subsystem in the pressurizing and discharging system, a secondary discharging system is also arranged, the system can be used for discharging gas of the TPRD gas cylinder with two ends arranged, and the two sets of discharging systems can work simultaneously to realize rapid depressurization of the gas cylinder under emergency conditions.
Drawings
FIG. 1 is a schematic diagram of a test system in accordance with the present invention;
FIG. 2 is a schematic view of a base and a burn rack in a burn test system;
FIG. 3 is a schematic view of the structure of a combustion bank;
FIG. 4 is a schematic view of a safety shield apparatus;
Fig. 5 is a schematic view of the structure of the liquid combustion tank.
Detailed Description
The following describes the implementation of the present invention in detail with reference to the accompanying drawings:
As shown in fig. 1-5, the long tube trailer IV hydrogen storage cylinder fire test system comprises a fire test system P1, a safety protection device, a pressurizing and discharging system P2, a secondary discharging system P3 and a control system P4.
The fire test system P1 includes a base for placing the cylinder 43 to be tested and a combustion device provided in the base. The base is formed by assembling a plurality of modules 55-59 with the same or similar structures end to end, and the surface of the base is provided with a sliding rail. The gas cylinder 43 to be measured is horizontally placed on the supporting structure 60, and the bottom of the gas cylinder is provided with supporting feet which can be installed in the sliding rail, so that the supporting structure 60 can move along the length direction of the base. The combustion device has a plurality of groups or a plurality of groups, respectively, fixedly mounted in each base module and located below the support structure 60. The two ends of the cylinder 43 to be measured are respectively provided with a temperature-driven safety pressure relief device (TPRD).
The pressurized bleed system P2 is comprised of an air source pressurization subsystem and a bleed subsystem SP 1. One end of the gas cylinder 43 to be measured is provided with a gas cylinder pressurizing port and a temperature driving safety pressure relief device TPRD.
The air source pressurizing subsystem comprises a test air source 1, a pressure regulating valve 2, an electric control valve 4, a one-way valve 5, an air filter 6, an air pressurizing device 7, a safety valve 8, a cooler 10, a flow limiting valve 14, a one-way valve 16 and an electromagnetic valve 17 which are sequentially connected through pipelines, wherein the battery valve 17 is connected with a gas cylinder pressurizing port, the cooler 10 is connected with a water pump 11 and a cold water tank 12 through pipelines, pressure gauges 3 and 9 are respectively arranged behind the pressure regulating valve 2 and the air pressurizing device 7, a thermometer 13 is arranged behind the cooler, a flowmeter 15 is arranged behind the flow limiting valve 14, and a pressure sensor 24 is arranged behind the electromagnetic valve 17. The cylinder pressurization port is also provided with a temperature sensor 25.
The discharging subsystem SP1 comprises three groups of pipelines, namely a normal discharging pipeline L1 provided with a pressure sensor 26 and a one-way valve 21, an emergency discharging pipeline L2 provided with a solenoid valve 20 and a pressure maintaining pipeline L3 provided with a pressure holding valve 18 and a solenoid valve 19, wherein one end of the normal discharging pipeline L1 is connected to a discharging port of the TPRD, one end of the emergency discharging pipeline L2 is connected to a gas cylinder pressurizing port, one end of the pressure maintaining pipeline L3 is connected between the one-way valve 16 and the solenoid valve 17, and the other ends of the three pipelines are connected to a discharging port 23 through one-way valves 22.
Optionally, a second temperature-driven safety pressure relief device TPRD may be further disposed at the other end of the cylinder 43 to be tested, and a secondary relief system P3 is connected to the air discharge port of the TPRD, where the secondary relief system P3 includes a pressure sensor 44, a check valve 45, a relief port 46, and a check valve 47 and a hot air blower 48 connected by a pipeline in sequence, where the pressure sensor 44 and the check valve 47 are connected to the air discharge port of the TPRD respectively.
The control system P4 comprises a control terminal 54 and a data acquisition device 53, wherein the data acquisition device 53 is connected with the control terminal 54 through a signal wire, and various signal detection devices and electric control devices are arranged in the fire test system.
The safety protection device comprises a spray fire extinguishing device, remote video monitoring equipment and a wind-shielding explosion-proof wall 66 formed by reinforced concrete, wherein the wind-shielding explosion-proof wall 66 covers the top and two sides of the gas cylinder 43 to be tested, a toughened glass observation window 67 is arranged on the wind-shielding explosion-proof wall 66 positioned on the side, and the spray fire extinguishing device 51 and the remote video monitoring equipment 52 are arranged on the wind-shielding explosion-proof wall at the top. The spray fire extinguishing device 51 is connected to the outlet of the water pump 11 by a pipe.
The combustion device is a combustion row using gas fuel or a combustion pool using liquid fuel, wherein a plurality of groups of combustion rows are arranged and are fixed in a base through a fixer 62 and bolts, each combustion row comprises a fuel pipe 63 externally connected with a fuel source, a plurality of parallel combustion pipes 64 are arranged perpendicular to the fuel pipe 63 at intervals, the interiors of the combustion pipes 64 are hollow and communicated with the fuel pipe 63, a plurality of upward fuel ports 65 are formed in each combustion pipe 64 at intervals, when the combustion row is used, the fuel source is a fuel gas cylinder, a pressure gauge 31, a solenoid valve 32, a throttle valve 33 and a flowmeter 34 are sequentially arranged on an outlet pipeline of the fuel gas cylinder, at least three air supply pipelines capable of being adjusted in parallel connection through valves are connected behind the flowmeter 34, the solenoid valve, a flow limiting valve and a one-way valve are respectively arranged on each air supply pipeline, and the tail ends of the air supply pipelines are connected with the fuel pipe 63.
Or a plurality of combustion chambers, each of which is secured in the base by fasteners 71 and bolts, each combustion chamber including a fluid tank 69 which is externally connected to a fuel source by fuel line 70. When a combustion bowl is used, the liquid fuel level in the liquid tank 69 is controlled by a valve on an external fuel supply pipe connected to the fuel pipe 70.
The invention will be described in more detail with reference to specific examples;
in the example, the total length of the gas cylinder to be measured is 5400mm, the outer diameter is 670mm, and the working pressure is 52Mpa.
As shown in fig. 1, the long-tube trailer IV hydrogen storage cylinder fire test system comprises a fire test system P1, a pressurization and discharge system P2, a secondary discharge system P3 and a control system P4, and is provided with a remote video monitoring device 55 and a safety protection device.
The main structural components in the fire test system P1, the pressurizing and discharging system P2 and the auxiliary discharging system P3 are optionally connected through a quick connector, a flange bolt structure and other connection modes, the fire test system P1 is arranged in a safety protection device, a gas cylinder 43 to be tested is arranged on a supporting structure 60, the distance between the bottom of the gas cylinder and a combustion row is 100mm, K-type thermocouples are arranged on the surface of the gas cylinder according to fire test requirements, and thermocouple signal wires can extend out through holes on the supporting structure 60. The two sides of the base modules 55-59 are respectively provided with an igniter, and each sensor, video monitoring equipment and electric control equipment in the system are connected to the control system P4 through pipelines.
The fire test system P1 includes two sets of fuel supply lines L4 and L5, which supply fuel to the fire test stand 42 through three air supply lines L6, L7, and L8, and the gas cylinder 43 to be tested is located on the fire test stand. Wherein the fuel supply line L4 is composed of a fuel source 27, a pressure gauge 28, a solenoid valve 29 (similar to L5), and the air supply line L6 is composed of a solenoid valve 35, a restrictor valve 38, and a check valve 39 (similar to L7 and L8). Line L6 also controls the connected burn bench combustion zone (L8 class) by controlling manual valve 40. Wherein the restrictor valve 38 provided in the lines L6-L8 serves to limit the maximum flow, prevent excessive flame due to erroneous operation, etc., and the check valve 39 serves to prevent the backflow of fuel.
For a cylinder provided with only a single TPRD, a 1650mm long local flame is applied on its side remote from the bleeder device by moving the support structure 60 such that the cylinder corresponds to the seats 56-59, wherein the combustion bank of the seat 56 will provide a local fire source, placing the cylinder on the support structure 60, the TPRD being located above the seat 59 and being provided with a protective cover (not shown in the figures) having a thickness of less than 4mm, closing the manual valve 40, opening the manual valve 41, supplying fuel for the local fire source by means of the fuel supply line L4 and the gas feed line L8.
For a cylinder with TPRD's at both ends in FIG. 1, a 1650mm long partial flame is applied in the middle of the cylinder by moving the support structure 60 to correspond the cylinder to the base modules 55-58, wherein the combustion bank of module 57 will provide the partial fire source, placing the cylinder on the support structure 60 and disposing a protective cover (not shown) at the TPRD with a thickness of less than 4mm, opening the manual valve 40, closing the manual valve 41, and the fuel supply line L4 and the gas feed line L6 supply fuel for the partial fire source.
The specific operation is described by taking a gas cylinder with TPRD at both ends as an example, the solenoid valves 29 and 36 are opened, the throttle valve 33 is adjusted to make the flow meter 34 reach the required flow, the ignition device is started, and the partial flame is formed. When the integral flame is to be adjusted, the solenoid valves 32, 35 and 37 are opened, the ignition devices at the base modules 55, 56 and 58 are started to form the integral flame, and the throttle valve 33 is adjusted to enable the flow meter 34 to achieve the required flow.
The pressurizing and discharging system P2 comprises a discharging subsystem SP1, and comprises three parts, namely a normal discharging pipeline L1 formed by a pressure sensor 26 and a one-way valve 21, an emergency discharging pipeline L2 formed by an electromagnetic valve 20 and a pressure maintaining pipeline L3 formed by an electromagnetic valve 17, a pressure holding valve 18 and an electromagnetic valve 19, wherein the normal discharging pipeline L1 is connected with a discharging port of the TPRD, the emergency discharging pipeline L2 and the pressure maintaining pipeline L3 are connected with a pressurizing port of a gas bottle, and the three pipelines are externally connected with the one-way valve 22 and the discharging port 23.
The pressurizing pipeline in the pressurizing and bleeding system comprises a test air source 1, a pressure regulating valve 2, a pressure gauge 3, an electric control valve 4, a one-way valve 5, a gas filter 6, a gas pressure boosting device 7, a safety valve 8, a pressure gauge 9, a cooler 10, a thermometer 13, a flow limiting valve 14, a flowmeter 15, a one-way valve 16, an electromagnetic valve 17 and a pressure sensor 24. The cooler 10 is supplied with water from a water pump 11 and a cold water tank 12, and is controlled by a solenoid valve 49. The check valve 5 can prevent the gas at the low pressure end of the gas boosting device from flowing back, the gas filter 7 can remove impurities, the safety valve 8 can prevent the gas pressure from being too high to damage a pipeline, the pressure gauge 9 can monitor the boosted gas pressure, the cooler 10 can reduce the boosted gas temperature, the boosting efficiency of the gas cylinder is improved, the thermometer 13 can monitor the cooled gas temperature, the flow limiting valve 14 limits the maximum charging flow to protect the gas cylinder, the check valve 16 can prevent the gas cylinder from flowing back of the high-pressure gas, the pressure holding valve 18 is set to be used for maintaining the pressure of the gas cylinder at the working pressure of the gas cylinder of 52MPa, the pressure sensor 24 is used for monitoring the pressure in the gas cylinder, the pressure sensor 26 is used for monitoring the pressure of a normal discharge pipeline, and the check valve 21 can prevent the high-pressure gas in the pressure maintaining process from affecting the normal discharge pipeline and TPRD. When an emergency occurs and the TPRD is not activated, the gas in the bottle can be rapidly released by opening the solenoid valve 20.
The specific operation of the pressure boosting of the gas cylinder 43 to be tested is that the pressure regulating valve 2 is regulated to enable the pressure gauge 3 to achieve the required pressure reading, the electromagnetic valves 4, 17 and 49 are opened, the gas boosting device 7 and the water pump 11 are started, the gas is boosted by the gas boosting device 7 after being filtered by the gas filter 6, the gas is cooled by the cooler 10 and then rapidly boosted to the required pressure, the example is 55Mpa and slightly higher than the working pressure 52Mpa, the gas boosting device 7, the water pump 11 and the electromagnetic valves 4 and 49 are closed, the pressure is maintained until the internal pressure of the gas cylinder is stable, and the electromagnetic valve 19 is opened to reduce the pressure of the gas cylinder to the working pressure.
The secondary bleed system P3 is connected to the bleed port of another TPRD device and includes a pressure sensor 44, a check valve 45, a bleed port 46, a check valve 47 and a hot air blower 48. An emergency situation may occur and when the TPRD is not activated, the hot air blower 48 may melt the fusible alloy in the TPRD to release the bottle gases.
The control system P4 comprises a data acquisition system 53 and a control terminal 54, wherein the data acquisition system 53 is connected with a pressure regulating valve 2, a solenoid valve 4, a solenoid valve 17, a pressure holding valve 18, a solenoid valve 29, a solenoid valve 20, a solenoid valve 29, a solenoid valve 32, a throttle valve 33, solenoid valves 35-37, a throttle valve 38, a solenoid valve 49 and a solenoid valve 50, is connected with sensing devices such as a pressure gauge 3, a pressure gauge 9, a temperature gauge 13, a flow meter 15, a pressure sensor 24, a temperature sensor 25, a pressure sensor 26, a pressure gauge 28, a pressure gauge 31, a flow meter 34, a pressure sensor 44 and a thermocouple (not shown in the figure) on the surface of a gas cylinder, and is connected with a gas booster 7, a water pump 11, a hot air blower 48, a video monitoring device 52 and a combustion exhaust ignition device (not shown in the figure), the data acquisition device 53 acquires and stores the data of all the components and then transmits the data to the control terminal 54, and the control terminal 54 regulates each electric control valve and each electric control device.
As shown in fig. 2, the upper part of the fire test stand is a supporting structure 60 made of a refractory material having low thermal conductivity, and the two end partitions of the supporting structure 60 prevent the TPRD from directly receiving fire and fix the gas cylinder by a holder 61. The lower part is formed by splicing five modularized bases, and each part of the bases is provided with an independent combustion row. The support structure 60 can move on the slide rails on the modules 55 and 59, and when moving to the far right, can be used for single TPRD gas cylinder fire test, and the combustion row of the base 56 is a local fire source. When moving to the leftmost side, the device can be used for a double TPRD gas cylinder fire test, and the base 57 is a local fire source. According to the gas cylinders of different sizes, the base and the supporting structure can be replaced to meet test requirements. Of these, the modules 55 and 59 of this example were 225mm long, the modules 56 and 57 were 1650mm long, and the module 58 was 1875mm long.
As shown in FIG. 3, the illustrated burner rows are mounted in each base and are fastened in the base by fasteners 62 in a bolt-on manner, and the burner rows of different rows can be replaced to meet the fire test requirements of different size cylinders. The combustion row circumscribes the fuel source through a fuel tube 63 and a 3mm diameter fuel port 65 is provided in the combustion tube 64 at 20mm intervals. Wherein, 14 combustion tubes 64 are arranged at 55mm intervals in this example, a continuous stable fire source can be provided.
As shown in fig. 4 and 1, the main body of the safety protection device is a wind-proof and explosion-proof wall 66 made of reinforced concrete, and 4 observation windows 67 made of toughened glass are arranged on one side of the wall body far away from observers. A sprinkler fire-extinguishing device 51 is provided at the top, and a cold water tank 12 is connected via a water pipe 68, and supplied with water by a water pump 11. In special cases, if the wrapping layer of the gas cylinder is still burning after the supply of the fire source fuel is stopped, the water pump 11 can be started and the electromagnetic valve 50 can be opened to extinguish the fire.
In addition, as shown in fig. 5, the liquid combustion tank is provided with a liquid tank 69, which can be used for carrying out liquid fuel burning test instead of the combustion row, and the combustion tank is fixed in the base by a fixing device 71 in a bolt fastening manner, so that the burning test requirements of the gas cylinders with different sizes can be met by replacing the liquid tanks with different sizes. The combustion bowl is circumscribed by a fuel tube 70 for liquid fuel (not shown) and the level of liquid in the liquid tank 69 can be controlled by a valve connected to the circumscribed fuel supply tube of the fuel tube 70.
The remote video monitoring device 52 may include a high-definition camera and an infrared camera, and may observe the leakage position of the gas cylinder through the high-definition camera and observe the heat distribution of the gas cylinder through the infrared camera.
Preferred schematic block diagrams of the present example are shown in fig. 1-5, but the technical form of the present invention can be implemented in other similar schemes, and is not limited to the descriptions given in the specific embodiments of the present invention. More precisely, the implementation procedure given by the present invention is a better way of understanding the technical route of the present invention more thoroughly in the technical field to which the present invention relates. Any structural, mode or method changes, improvements and modifications made according to the relevant content of the invention fall within the technical scope of the invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300566A (en) * | 2017-06-18 | 2017-10-27 | 浙江大学 | A kind of local bonfire test system of the gas cylinder with safety insulating device |
| CN112781899A (en) * | 2019-11-07 | 2021-05-11 | 北京航天试验技术研究所 | Liquid hydrogen gas cylinder burning test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206583842U (en) * | 2017-03-20 | 2017-10-24 | 中国特种设备检测研究院 | Big volume gas cylinder bonfire test device |
| CN207438149U (en) * | 2017-07-26 | 2018-06-01 | 中国特种设备检测研究院 | A kind of new long-tube trailer gas cylinder safely bleeder |
| CN215116096U (en) * | 2021-01-22 | 2021-12-10 | 重庆市特种设备检测研究院 | Gas cylinder fire test rack capable of automatically supplementing combustible liquid |
| CN113376315A (en) * | 2021-07-16 | 2021-09-10 | 中国特种设备检测研究院 | Burning test device for vehicle-mounted hydrogen storage cylinder |
| CN215493402U (en) * | 2021-07-16 | 2022-01-11 | 中国特种设备检测研究院 | Burning test device for vehicle-mounted hydrogen storage cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300566A (en) * | 2017-06-18 | 2017-10-27 | 浙江大学 | A kind of local bonfire test system of the gas cylinder with safety insulating device |
| CN112781899A (en) * | 2019-11-07 | 2021-05-11 | 北京航天试验技术研究所 | Liquid hydrogen gas cylinder burning test device |
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