CN206837310U - Small-size experimental device for testing extinguishing efficiency of dry powder extinguishing agent - Google Patents

Small-size experimental device for testing extinguishing efficiency of dry powder extinguishing agent Download PDF

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Publication number
CN206837310U
CN206837310U CN201720515587.9U CN201720515587U CN206837310U CN 206837310 U CN206837310 U CN 206837310U CN 201720515587 U CN201720515587 U CN 201720515587U CN 206837310 U CN206837310 U CN 206837310U
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China
Prior art keywords
fire extinguishing
extinguishing agent
small
data acquisition
powder
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Expired - Fee Related
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CN201720515587.9U
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Chinese (zh)
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华敏
冯立
沈晓辉
潘旭海
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Nanjing Tech University
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Nanjing Tech University
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Abstract

The utility model discloses a small-size experimental device for testing fire extinguishing efficiency of dry powder fire extinguishing agent, which comprises a fire extinguishing chamber, a fire extinguishing agent injection device, a smoke gas analysis device and a temperature data acquisition device, wherein the upper end of the fire extinguishing chamber is connected with the fire extinguishing agent injection device, the side end of the fire extinguishing chamber is connected with the smoke gas analysis device, an oil pan is arranged in the fire extinguishing chamber, the temperature data acquisition device comprises a thermocouple tree and a data acquisition device, the thermocouple tree is arranged on the oil pan side in the fire extinguishing chamber, and the thermocouple tree is connected with a computer through the data acquisition device; the experimental device can represent the fire extinguishing efficiency of the dry powder fire extinguishing agent from four aspects of fire extinguishing time, minimum fire extinguishing agent dosage, temperature near a flame zone and concentration of toxic gas in smoke, and can research the influence of the fire extinguishing agent driving pressure, the discharge height, the spray nozzle size and other discharge conditions on the fire extinguishing effect.

Description

The small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test
Technical field
The technical field of fire engineering in safety engineering is the utility model is related to, more particularly to a kind of dry powder of small size goes out The experimental provision of fiery agent fire extinguishing effectiveness test.
Background technology
Powder extinguishing agent is a kind of drying and readily flowed micro-solid powder, and it has blow-off velocity fast, to people, animal And the characteristics of environmentally friendly, electrical insulating property is good, these advantages are that other extinguishing chemicals are irreplaceable;With the limit of halon fire agent System is used and finally substituted, and powder extinguishing agent will play increasing work in oil, chemical industry, transport, forestry fire prevention industry With.
Fire extinguishing effectiveness is to weigh a kind of good and badly mostly important technical indicator of extinguishing chemical, can reflect the fire extinguishing effect of extinguishing chemical Rate, while be also the Main Basiss of fire extinguishing system design.It is different from the basic performance of extinguishing chemical powder, and fire extinguishing effectiveness is one Independent indispensable experimental project.In order to characterize the fire extinguishing effectiveness of extinguishing chemical, fire fighting test must possess external interference because Element less, the requirement such as repetitive rate height, authenticity height.
The experimental provision of existing powder extinguishing agent fire extinguishing effectiveness test is larger, dangerous property, and function compared with To be single, lack the monitoring for concentration of toxic gases in fire extinguishing procedure, it is therefore necessary to establish a set of new small size and do Powder extinguishing chemical fire extinguishing effectiveness experimental apparatus for testing.
The content of the invention
For above-mentioned problem, the utility model aims to provide a kind of small chi of powder extinguishing agent fire extinguishing effectiveness test Very little experimental provision, the experimental provision can be poisonous from temperature near attack time, minimum foamite amount, flame zone and flue gas The fire extinguishing effectiveness of powder extinguishing agent is characterized in terms of the concentration of gas this four, extinguishing chemical driving pressure can also be studied in addition, applied Put influence of the release such as height, jet size condition to extinguishing effect.
To achieve these goals, technical scheme is as follows used by the utility model:
The small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test, the experimental provision include fire extinguishing room, extinguishing chemical Injection apparatus, flue gas analysis device and temperature data acquisition device, the fire extinguishing room upper end connect the extinguishing chemical injection dress Put, side connects the flue gas analysis device, the indoor setting food tray of fire extinguishing, and the temperature data acquisition device includes thermoelectricity Even tree and data acquisition device, the thermocouple tree are located at the indoor food tray side of the fire extinguishing, and the thermocouple tree passes through institute Data acquisition device is stated to be connected with computer.
Preferably, the extinguishant jetting device includes storage powder tank and driving gas cylinder, the storage powder tank is located at electronics On scale, connected between the driving gas cylinder and the storage powder tank by air inlet pipe, the storage powder tank and the fire extinguishing room upper end it Between connected by flour extraction pipe, be also associated with the shower nozzle of diffused in the flour extraction end of the flour extraction pipe.
Preferably, the flour extraction pipe in the air inlet pipe with being also equipped with valve.
Preferably, the thermocouple tree is fixed on iron stand, and include the thermocouple of 5 armourings, 5 heat Galvanic couple is respectively positioned on the central vertical axis of food tray, and vertical arranged in parallel successively up and down.
Preferably, the flue gas analysis device includes manual operator and analysis case, circle is provided with the fire extinguishing room side It is open, modularization flue gas probe is provided with the circular open.
Preferably, the fire extinguishing room wherein one side side wall is provided with, a fan is outer to pull.
The beneficial effects of the utility model are:Compared with prior art, the utility model has the advantages that, this experimental provision can With by measuring attack time and minimum foamite amount, and by monitor in real time above flame zone the temperature of each position and Toxic gas in flue gas(CO and NOx)Concentration characterize the fire extinguishing effectiveness of certain powder extinguishing agent;In addition change can also be passed through Extinguishing chemical driving pressure, discharge height and change jet size and discharge influence of the condition to extinguishing effect to study extinguishing chemical.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Wherein:1- drives gas cylinder, 2- pressure-reducing valves, 3- valves, 4- electronic scales, 5- storage powder tanks, 6- shower nozzles, 7- fire extinguishings room, 8- Thermocouple tree, 9- food trays, 10- flue gas analysis devices, 11- computers, 12- circular opens, 13- modularization flue gas probes, 14- enter Tracheae, 15- flour extraction pipes, 16- burning things which may cause a fire disaster, 17- is shatter-proof pressure-reducing valve.
Embodiment
In order that one of ordinary skill in the art is better understood on the technical solution of the utility model, with reference to attached Figure and embodiment are further described to the technical solution of the utility model.
The small-scale experiment device of a kind of powder extinguishing agent fire extinguishing effectiveness test shown in 1 referring to the drawings, the experiment dress Put including fire extinguishing room 7, extinguishant jetting device, flue gas analysis device 10 and temperature data acquisition device, the fire extinguishing room 7 its Middle one side side wall is provided with the outer sliding door of a fan, and the fire extinguishing upper end of room 7 connects the extinguishant jetting device, and side connects the cigarette Qi leel analysis apparatus 10, the fire extinguishing room 7 is interior to set food tray 9, and the temperature data acquisition device includes thermocouple tree 8 and data Harvester, the thermocouple tree 8 are located at the side of food tray 9 in the fire extinguishing room 7, and the thermocouple tree 8 is adopted by the data Acquisition means are connected with computer 11, and the thermocouple tree 8 is fixed on iron stand, and includes the thermocouple of 5 armourings, 5 The thermocouple is respectively positioned on the central vertical axis of food tray 9, and vertical arranged in parallel successively up and down, thermocouple from the bottom up according to Secondary numbering is No. 1 to No. 5, is fixed on iron stand, and all thermocouples are respectively positioned on the central vertical axis of food tray 9, No. 1 thermoelectricity It is even above food tray 9 and to be close to 9, No. 2 to No. 5 thermocouples of food tray and arrange upwards successively, and between adjacent two thermocouples Distance be 10cm, for measuring the Temperature Distribution of different zones above flame.The temperature data that 5 thermocouples collect passes through Data acquisition module is exported in computer 11.
Fire extinguishing room 7 is a transparent square restricted clearance, and length is 100cm, and the face of space six is by organic Glass is made, so as to the observation of experimental phenomena in testing.The wherein one side side wall of fire extinguishing room 7, can be at any time as the outer sliding door of a fan Open so that the quick of flue gas is scattered;The fire extinguishing top center of room 7, respectively open up at side wall 30cm, 60cm, 90cm one it is a diameter of 10cm circular open 12, the riding position as shower nozzle in extinguishant jetting device 6;The wherein one side side wall in fire extinguishing room 7 Center equally opens up a diameter of 10cm circular open 12, as modularization flue gas probe 13 in flue gas analysis device 10 Insertion position, burning things which may cause a fire disaster 16 are the liquid fuel being placed in food tray 9, and the bottom surface of food tray 9 is square, length of side 200mm, and depth is 40mm, wall thickness 3mm.
In the utility model, the extinguishant jetting device includes storage powder tank 5 and driving gas cylinder 1, the storage powder tank 5 It is located on electronic scale 4, is connected between the driving gas cylinder 1 and the storage powder tank 5 by air inlet pipe 14, the storage powder tank 5 and institute State fire extinguishing the upper end of room 7 between connected by flour extraction pipe 15, be also associated with the shower nozzle of diffused in the flour extraction end of the flour extraction pipe 15 6, the flour extraction pipe 15 in the air inlet pipe 14 with being also equipped with valve 3.
After the nut stored up on powder tank 5 is outwarded winding, storage powder tank 5, which is divided into two parts, top half up and down, includes air inlet pipe 14th, flour extraction pipe 15, shatter-proof pressure-reducing valve 17 and 8 symmetrical bolts and nuts, the length that air inlet pipe 14 is stretched into storage powder tank 5 are 5cm, the length that flour extraction pipe 15 is stretched into storage powder tank 5 is 17cm, and outside storage powder tank 5, it is each in air inlet pipe 14 and flour extraction pipe 15 A valve 3 is mounted with, to control the start-stop of the pressure of driving gas and extinguishing chemical release.Pressure-reducing valve 2 is used for detecting storage powder tank 5 In atmospheric pressure, while show and driving gas pressure.The latter half is then the tank of storage powder tank 5 of a cylindrical shape Body, basal diameter 15cm, it is highly 20cm, the volume in tank body is 3.5L, and drive device is by driving gas cylinder 1 and pressure-reducing valve 2 Composition, it is nitrogen to drive in gas cylinder 1 the driving gas that fills, and shower nozzle 6 is dismountable diffused shower nozzle 6, defeated powder flexible pipe it is interior Footpath is 2cm.
In the utility model, flue gas analysis device 10 is a Portable smoke analysis instrument, the flue gas analysis device 10 include manual operator and analysis case, manual operator:Show reading and control analysis case;Analyze case(Measuring instrument):In case is analyzed Carbon monoxide transducer, nitric oxide sensor, nitrogen dioxide sensor are assembled, determines carbon monoxide and nitrogen oxidation in flue gas The concentration of thing;Circular open 12 is provided with the fire extinguishing side of room 7, modularization flue gas probe is provided with the circular open 12 13。
Operation principle and step:
1. each several part experimental provision is built according to schematic diagram, and arrange pipeline.
2. opening storage powder tank 5 using spanner, weighing the powder extinguishing agent that quality is m1 using electronic scale 4 loads storage powder tank 5 In, driving gas cylinder 1 is opened after filling, is filled with the nitrogen of certain pressure intensity, and ensures that storage powder 5 air-tightness of tank are good.
3. pouring into liquid fuel thereto again after adding clear water in the bottom of food tray 9, it is set just to cover the whole ground of food tray 9 Face.
4. lighting the fire of food tray 9, the fire extinguishing gate of room 7 is closed, while opens temperature measuring equipment and flue gas analysis device 10, is opened Begin to measure.
5. after fuel pre-burning certain time and flameholding, the valve 3 for opening the flour extraction pipe 15 of storage powder tank 5 discharges dry powder Extinguishing chemical.When flame extinguishes completely, close valve 3 and stop applying powder extinguishing agent, and attack time is recorded with stopwatch.
6. opening the fire extinguishing gate of room 7 after fray-out of flame, fire extinguishing room 7 is set to be in the state of gravity-flow ventilation.Observe flue gas point Analysis apparatus 10, when the concentration of measured gas is zero, that is, the flue gas evacuation in room 7 of putting out a fire finishes, closing temperature measurement apparatus With flue gas analysis device 10, record data.
7. pulling down and opening storage powder tank 5, it is m2, m1 to weigh remaining powder extinguishing agent quality in tank body using electronic scale 4 Difference with m2 is minimum foamite amount.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims (6)

1. the small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test, it is characterised in that:The experimental provision includes fire extinguishing Room, extinguishant jetting device, flue gas analysis device and temperature data acquisition device, the fire extinguishing room upper end connect the fire extinguishing Agent injection apparatus, side connect the flue gas analysis device, the indoor setting food tray of fire extinguishing, the temperature data acquisition device Including thermocouple tree and data acquisition device, the thermocouple tree is located at the indoor food tray side of the fire extinguishing, the thermocouple Tree is connected by the data acquisition device with computer.
2. the small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test according to claim 1, it is characterised in that:Institute State extinguishant jetting device include storage powder tank and driving gas cylinder, it is described storage powder tank be located on electronic scale, it is described driving gas cylinder with Connected by air inlet pipe between the storage powder tank, connected between the storage powder tank and the fire extinguishing room upper end by flour extraction pipe, The flour extraction end of the flour extraction pipe is also associated with the shower nozzle of diffused.
3. the small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test according to claim 2, it is characterised in that:Institute Flour extraction pipe is stated with being also equipped with valve in the air inlet pipe.
4. the small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test according to claim 1, it is characterised in that:Institute State thermocouple tree to be fixed on iron stand, and include the thermocouple of 5 armourings, 5 thermocouples are respectively positioned in food tray On heart vertical axis, and vertical arranged in parallel successively up and down.
5. the small-scale experiment device of powder extinguishing agent fire extinguishing effectiveness test according to claim 1, it is characterised in that:Institute Stating flue gas analysis device includes manual operator and analysis case, circular open is provided with the fire extinguishing room side, at the circular open Provided with modularization flue gas probe.
6. the small-scale experiment device of the powder extinguishing agent fire extinguishing effectiveness test according to claim any one of 1-5, it is special Sign is:The fire extinguishing room wherein one side side wall is provided with the outer sliding door of a fan.
CN201720515587.9U 2017-05-10 2017-05-10 Small-size experimental device for testing extinguishing efficiency of dry powder extinguishing agent Expired - Fee Related CN206837310U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108333305A (en) * 2018-01-24 2018-07-27 合肥工业大学 A kind of experimental provision of the simulation quick decontamination of enclosure fire smoke
CN109682854A (en) * 2018-12-29 2019-04-26 燕山大学 A kind of combustion experiment platform
CN109708896A (en) * 2018-12-12 2019-05-03 西安航天动力试验技术研究所 Attitude control dynamical system quantitative filling device and charging method
CN110211475A (en) * 2019-06-28 2019-09-06 上海海事大学 One kind being based on a variety of inert gas mixing extinguishing test devices
WO2020228394A1 (en) * 2019-05-13 2020-11-19 应急管理部上海消防研究所 Experiment platform for conveying of dry powder fire suppression agent
CN112619017A (en) * 2020-12-17 2021-04-09 中国中元国际工程有限公司 Automatic water spray fire extinguishing efficiency test system
CN112782346A (en) * 2019-11-06 2021-05-11 中国石油化工股份有限公司 Foam fire extinguishing dynamic testing device and method
CN113687012A (en) * 2020-05-19 2021-11-23 陈春来 Dry powder identification method and device
CN113702356A (en) * 2021-10-28 2021-11-26 中国民航大学 Dry powder extinguishing agent performance testing system and method based on gas Raman spectrum

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108333305A (en) * 2018-01-24 2018-07-27 合肥工业大学 A kind of experimental provision of the simulation quick decontamination of enclosure fire smoke
CN109708896A (en) * 2018-12-12 2019-05-03 西安航天动力试验技术研究所 Attitude control dynamical system quantitative filling device and charging method
CN109682854A (en) * 2018-12-29 2019-04-26 燕山大学 A kind of combustion experiment platform
CN109682854B (en) * 2018-12-29 2020-10-09 燕山大学 Combustion experiment table
WO2020228394A1 (en) * 2019-05-13 2020-11-19 应急管理部上海消防研究所 Experiment platform for conveying of dry powder fire suppression agent
CN110211475A (en) * 2019-06-28 2019-09-06 上海海事大学 One kind being based on a variety of inert gas mixing extinguishing test devices
CN112782346A (en) * 2019-11-06 2021-05-11 中国石油化工股份有限公司 Foam fire extinguishing dynamic testing device and method
CN113687012A (en) * 2020-05-19 2021-11-23 陈春来 Dry powder identification method and device
CN112619017A (en) * 2020-12-17 2021-04-09 中国中元国际工程有限公司 Automatic water spray fire extinguishing efficiency test system
CN113702356A (en) * 2021-10-28 2021-11-26 中国民航大学 Dry powder extinguishing agent performance testing system and method based on gas Raman spectrum

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Granted publication date: 20180105