CN203644292U - Fire testing box capable of chancing low air pressure and oxygen concentration - Google Patents
Fire testing box capable of chancing low air pressure and oxygen concentration Download PDFInfo
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- CN203644292U CN203644292U CN201320891213.9U CN201320891213U CN203644292U CN 203644292 U CN203644292 U CN 203644292U CN 201320891213 U CN201320891213 U CN 201320891213U CN 203644292 U CN203644292 U CN 203644292U
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Abstract
The utility model provides a fire testing box capable of changing low air pressure and the oxygen concentration, which is an environment simulation device for controlling values of low air pressure and oxygen concentration inside the testing box in a fire test, and belongs to the experiment fields of combustion science and fire science. The fire testing box comprises a testing box body (1), wherein the testing box body (1) is of a rectangular structure, the left side of the box body (1) is provided with an inlet/outlet (2), the inlet/outlet (2) is closed by adopting a spiral compressing type high-strength door (27), the upper part inside the box body (1) is provided with two low voltage resistant lighting lamps (3) which are additionally provided with an explosion-proof cover and a camera (11), the obverse side of the box body (1) is provided with an observation window (7), a spray nozzle (8) and a nozzle base are arranged right above inside the box body (1), a fire extinguishing pipeline (9) is laid, and flow guide grooves (20), liquid collecting holes (21) and a recycling pipeline (14) are reserved on the ground in advance. The fire testing box can simulate low air pressure at different altitudes and different oxygen concentration coupling environments, and is used for carrying out researches in combustion mechanisms, fire detection and fire extinguishing experiments in special environments such as low pressure and low oxygen/oxygen enrichment.
Description
Technical field
The utility model belongs to the experiment field of Combustion and Fire Science, is specifically related to a kind of step-down air pressure and becomes the fire test case of oxygen concentration, and it for controlling a kind of environment simulator of infrabar and oxygen concentration value in chamber in the time of fire test.
Background technology
Fire control under hypobaric hypoxia particular surroundings is that the focus making internal disorder or usurp is ground in Combustion in recent years and Fire Science field, under the hypobaric hypoxia environments such as high altitude localities and high-altitude vehicle indoor environment, the detection of fire with put out a fire to save life and property more difficultly than atmospheric pressure environment, its fire safety evaluating is paid much attention to owing to relating to great political economy problem.In order to disclose the rule that affects of the burning behavior of hypobaric hypoxia environment on fire, detection feature parameter and fire extinguishing effect, need in the chamber of transformation change oxygen concentration continuously, carry out experiment from the angle of Combustion, fire dynamics.General low pressure test (LPT) device, due to the limitation of its design size, low pressure range and gas regulation, is difficult to carry out the experimental study that fire is relevant.Therefore,, for carrying out combustion mechanism, detection and the fire extinguishing experiment under particular surroundings, the fire test case that designs a kind of transformation change oxygen concentration of large-size is good selection.
Summary of the invention
The purpose of this utility model is to provide a kind of fire test case of simple in structure, easy to operate pressure-variable change oxygen concentration, can simulate infrabar and the different oxygen concentration coupling environment of Different Altitude, for carrying out combustion mechanism, detection and the fire extinguishing experimental study under low pressure and hypoxemia/oxygen enrichment particular surroundings.
For achieving the above object, the utility model has adopted following technical scheme:
The fire test case that a kind of step-down air pressure becomes oxygen concentration comprises test casing 1, and test casing 1 is square type structure, the long 3.0m in space in case, wide 2.0m, high 2.0m, casing pressure-bearing scope is 26.4-101.3kPa, the sea level elevation scope that can simulate is 0-10,000m; Gateway 2 width that casing 1 left side arranges are 0.9m, are highly 1.9m, and gateway 2 adopts spiral compression formula high-strength door 27 to seal; The interior top of casing 1 is provided with 2 the resistance to low-voltage lighting 3 and the video cameras 11 that install anti-explosion cover additional, and the arranged in pairs or groups rotating base of 350 °, upper and lower 60 ° of levels of video camera 11, can be by master console control record experiment video; 3 flange holes 5 and through wires hole 22 are left in casing 1 front, flange hole 5 is mainly used in to chamber inner connection tube road or threading, only can not controlled in wireless case build-in test equipment must use wired or need additionally use while laying pipeline, the used time can not used round table-like rubber stopper seal; Through wires hole 22 is connected with master console with cable for the data line of measure-controlling unit, between cable and casing, can pour into neoprene packing; Casing 1 front arranges view window 7, and view window 7 is the vacuum double mirror structure of tempering silex glass, and clear light size is that 0.3m is wide, and 0.45m is high; Directly in casing 1, be provided with shower nozzle 8 and spout pedestal, be equipped with fire-fighting pipeline 9, diversion trench 20, liquid collection hole 21 and reclaim line 14 have been reserved in ground, for carrying out the fire extinguishing system experiments such as water spray, thin water smoke; The interior top of casing 1 is provided with pressure transducer 10, and right side wall is connected with exhaust pipe 16 and air inlet pipeline 13, by vacuum pump unit and charge flow rate control system regulating box internal gas pressure value; Casing 1 internal face is provided with gas sampling hole 6, oxygen inlet 17, nitrogen inlet 18 and transports pipeline 19, the sample gas oxygen concentration data of extracting out through thieff hatch 6 are committed to control desk, and control desk is realized the closed circuit control of oxygen concentration to air intake opening 17,18 injection adjustments of gas by Yang Dan proportioning topworks; Transport pipeline 19 and be always about 8.0m along chamber madial wall trend, on it, open a little spray orifice of 1.8mm every 10cm, air-flow spray orifice 23 makes injecting gas distribution uniform in case.
Useful technique effect of the present utility model is embodied in following several aspect:
(1) at size and pressure-bearing design aspect, 12m
3case in space be enough to hold small test platform and measuring equipment, can meet the space requirement of conventional fire test, casing can bear 0-10, the low pressure range of 000m sea level elevation has met the pressure requirement of high highlands and civilian high-altitude vehicle indoor environment.
(2) design aspect of importing and exporting in chamber, the size that 0.9m is wide, 1.9m is high is convenient to the turnover of personnel and experimental facilities, the spiral compression formula high-strength door of design has simple in structure, easy to operate, good leak tightness, quiet vibrationless feature, closes Shi Buhui the instrument position and the light path that in chamber, set are exerted an influence.
(3) aspect oxygen concentration adjusting, complete gas sampling, the adjusting of oxygen nitrogen proportioning and gas transport pipe system are designed, wherein gas transport pipeline has been simulated the pin design of aerial extinguishing pipeline, and the distribution of gas in the injection test case making is more even.
(4) aspect fire extinguishing system, chamber is provided with complete pipe system, can carry out easily the fire extinguishing experimental studies such as water spray, thin water smoke, and can arrange the dissimilar fire extinguishing experiment of pipe design by 3 reserved flange holes;
(5), aspect experiment effect and supervisory system, chamber can be passed through regulating box internal pressure and oxygen concentration value simulated pressure and oxygen concentration coupling environment, and can be by monitoring experiment process and the phenomenon clearly of camera video in view window and chamber.
Accompanying drawing explanation
Fig. 1 is the front front view that transformation described in the utility model becomes oxygen concentration fire test case;
Fig. 2 is the partial enlarged drawing that transports pipeline 19 in Fig. 1;
Fig. 3 is the left view that transformation described in the utility model becomes oxygen concentration fire test case;
Fig. 4 is the control system structural representation that transformation described in the utility model becomes oxygen concentration fire test case;
Number in the figure: 1-tests casing; 2-gateway; 3-illuminating lamp; 4-socket; 5-flange hole; 6-gas sampling hole; 7-view window; 8-shower nozzle; 9-fire-fighting pipeline; 10-pressure transducer; 11-video camera; 12-Temperature Humidity Sensor; 13-air inlet pipeline; 14-liquids recovery pipeline; 15-valve; 16-vacuum-pumping pipeline; 17-oxygen inlet; 18-nitrogen inlet; 19-gas transport pipeline; 20-diversion trench; 21-liquid collection hole; The perforation of 22-bus; 23-air-flow spray orifice; 24-bolt; 25-securing member; 26-solid bearing; 27-spiral compression formula high strength sealed door.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment:
Referring to Fig. 1, the fire test case that a kind of step-down air pressure becomes oxygen concentration comprises test casing 1, and test casing 1 is square type structure, the long 3.0m in space in case, wide 2.0m, high 2.0m; Test box inside adopts netted reinforcing rib to increase housing bearing capacity, and pressure-bearing scope is 26.4-101.3kPa, and the sea level elevation scope that can simulate is 0-10,000m; In casing, be provided with pressure transducer 10, right side wall is connected to vacuum pump unit by copper exhaust pipe 16, is connected to supply air system by air inlet pipeline 13, can select automatically to set or manual adjustments case internal pressure value at control desk.
Casing 1 front arranges view window 7, and view window 7 is the vacuum double mirror structure of tempering silex glass, and clear light size is that 0.3m is wide, and 0.45m is high; The interior top of casing 1 is provided with 2 the resistance to low-voltage lighting 3 and the video cameras 11 that install anti-explosion cover additional, and video camera 11 has been arranged in pairs or groups can horizontal 350o, the electric platform of upper and lower 60o rotation; Therefore, can be intuitively by view window or by video camera monitoring experiment process and phenomenon clearly in control box.
Directly in casing 1, be provided with shower nozzle 8 and spout pedestal, be equipped with fire-fighting pipeline 9, diversion trench 20, liquid collection hole 21 and reclaim line 14 have been reserved in ground, can be used for carrying out the fire extinguishing system experiments such as water spray, thin water smoke; Casing 1 front is reserved with 3 flange holes 5, and flange hole 5 is mainly used in connecting other pipeline or threading in chamber, in the time that box equipment must use line traffic control or need extra laying pipeline, uses, and the used time can not used round table-like rubber stopper seal.
Casing 1 internal face is provided with gas sampling hole 6, oxygen inlet 17, nitrogen inlet 18 and gas transport pipeline 19, the gas of extracting out through thieff hatch 6 is submitted to control desk by oxygen concentration data after instrument by analysis, and control desk control oxygen nitrogen matching system carries out concentration adjustment by air intake opening 17,18 to direct oxygen injection in case or nitrogen; Gas transport pipeline 19 is always about 8.0m along chamber madial wall trend, on it, is evenly distributed with the little spray orifice of 1.8mm every 10cm, and referring to Fig. 2, air-flow spray orifice 23 makes to be injected into the adjusting gas distribution uniform in chamber.
Gateway 2 width that casing 1 left side arranges are 0.9m, be highly 1.9m, gateway 2 adopts spiral compression formula high strength hatch door 27 to seal, referring to Fig. 3, while closing, first bolt 24 is pushed to the draw-in groove of securing member 25, then screw clockwise bolt, in the time that case internal gas pressure reduces, thereby hatch door can keep good leakproofness by natural press seal circle; Spiral compression formula high-strength door is simple in structure, easy to operate, can not produce the impacts such as vibrations to the light path setting in chamber and instrument position.
Referring to Fig. 4, a kind of fire test case control system of step-down air pressure change oxygen concentration is simple for structure, control desk is bored a hole and 22 is connected with casing and realizes data double-way transmission, the control that can throw light on, make a video recording when the sensing datas such as receiving magazine internal pressure, humiture by bus; Control desk docks with 6,9,13,14,16,17,18 pipe interfaces of test casing by low voltage control topworks, Yang Dan proportioning topworks and fire extinguishing system topworks, realizes intervention and control to chamber internal gas pressure, oxygen concentration and fire extinguishing experiment.
The not detailed disclosed part of the utility model belongs to the known technology of this area.
Although above the illustrative embodiment of the utility model is described; so that those skilled in the art understand the utility model; but should be clear; the utility model is not limited to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in; these variations are apparent, and all innovation and creation that utilize the utility model design are all at the row of protection.
Claims (1)
1. the fire test case of a step-down air pressure change oxygen concentration, it is characterized in that, comprise test casing (1), test casing (1) is square type structure, the long 3.0m in space in case, wide 2.0m, high 2.0m, casing pressure-bearing scope is 26.4-101.3kPa, and the sea level elevation scope that can simulate is 0-10,000m; Gateway (2) width that casing (1) left side arranges is 0.9m, is highly 1.9m, and gateway (2) adopt spiral compression formula high-strength door (27) to seal; Top is provided with 2 resistance to low-voltage lighting (3) and video cameras (11) that install anti-explosion cover additional in casing (1), and the arranged in pairs or groups rotating base of 350 °, upper and lower 60 ° of levels of video camera (11), can test video by master console control record; 3 flange holes (5) and through wires hole (22) are left in casing (1) front, flange hole (5) is mainly used in to chamber inner connection tube road or threading, only can not controlled in wireless case build-in test equipment must use wired or need additionally use while laying pipeline, the used time can not used round table-like rubber stopper seal; Through wires hole (22) is connected with master console with cable for the data line of measure-controlling unit, between cable and casing, can pour into neoprene packing; Casing (1) front arranges view window (7), and view window (7) is the vacuum double mirror structure of tempering silex glass, and clear light size is that 0.3m is wide, and 0.45m is high; Directly in casing (1), be provided with shower nozzle (8) and spout pedestal, be equipped with fire-fighting pipeline (9), diversion trench (20), liquid collection hole (21) and reclaim line (14) have been reserved in ground, for carrying out the fire extinguishing system experiments such as water spray, thin water smoke; In casing (1), top is provided with pressure transducer (10), and right side wall is connected with exhaust pipe (16) and air inlet pipeline (13), by vacuum pump unit and charge flow rate control system regulating box internal gas pressure value; Casing (1) internal face is provided with gas sampling hole (6), oxygen inlet (17), nitrogen inlet (18) and transports pipeline (19), the sample gas oxygen concentration data of extracting out through thieff hatch (6) are committed to control desk, and control desk is realized the closed circuit control of oxygen concentration to oxygen inlet (17), nitrogen inlet (18) injection adjustments of gas by Yang Dan proportioning topworks; Transport pipeline (19) and be always about 8.0m along chamber madial wall trend, on it, open a little spray orifice of 1.8mm every 10cm, air-flow spray orifice (23) makes injecting gas distribution uniform in case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891213.9U CN203644292U (en) | 2013-12-30 | 2013-12-30 | Fire testing box capable of chancing low air pressure and oxygen concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891213.9U CN203644292U (en) | 2013-12-30 | 2013-12-30 | Fire testing box capable of chancing low air pressure and oxygen concentration |
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| Publication Number | Publication Date |
|---|---|
| CN203644292U true CN203644292U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320891213.9U Withdrawn - After Issue CN203644292U (en) | 2013-12-30 | 2013-12-30 | Fire testing box capable of chancing low air pressure and oxygen concentration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714739A (en) * | 2013-12-30 | 2014-04-09 | 中国科学技术大学 | Fire test box with variable low air pressure and variable oxygen concentration |
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN104266914A (en) * | 2014-10-10 | 2015-01-07 | 大连理工大学 | High and low temperature testing apparatus for mechanical test |
| CN105894940A (en) * | 2016-06-23 | 2016-08-24 | 合肥依科普工业设备有限公司 | Fire-fighting training plane fire disaster simulating device |
| CN114771869A (en) * | 2022-05-19 | 2022-07-22 | 重庆大学 | Low-oxygen smoke fire simulation system for airplane passenger cabin |
-
2013
- 2013-12-30 CN CN201320891213.9U patent/CN203644292U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714739A (en) * | 2013-12-30 | 2014-04-09 | 中国科学技术大学 | Fire test box with variable low air pressure and variable oxygen concentration |
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN104266914A (en) * | 2014-10-10 | 2015-01-07 | 大连理工大学 | High and low temperature testing apparatus for mechanical test |
| CN105894940A (en) * | 2016-06-23 | 2016-08-24 | 合肥依科普工业设备有限公司 | Fire-fighting training plane fire disaster simulating device |
| CN114771869A (en) * | 2022-05-19 | 2022-07-22 | 重庆大学 | Low-oxygen smoke fire simulation system for airplane passenger cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |