CN102375046A - Simulation experiment box - Google Patents
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- CN102375046A CN102375046A CN2010102616715A CN201010261671A CN102375046A CN 102375046 A CN102375046 A CN 102375046A CN 2010102616715 A CN2010102616715 A CN 2010102616715A CN 201010261671 A CN201010261671 A CN 201010261671A CN 102375046 A CN102375046 A CN 102375046A
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Abstract
The invention discloses a simulation experiment box, which is applied to a combustion test. The simulation experiment box comprises a sealed combustion chamber, a gas inlet valve, a solenoid valve, a vacuum pump, and a control panel. The sealed combustion chamber comprises a pressure sensor, an air socket and an ignition frame that is provided with an electronic igniter; two air plugs on the air socket respectively carry out power supply and data transmission on a measuring instrument in the combustion chamber. The solenoid valve is arranged at the bottom of the combustion chamber and is connected with the pressure sensor. The vacuum pump, which is arranged below the combustion chamber, is communicated with the combustion chamber through a bleeder hole and is also connected with the pressure sensor. And the control panel is used for controlling the work of the combustion chamber. According to the simulation experiment box disclosed in the embodiment of the invention, a pressure value in the experiment box can be automatically adjusted by arranging the vacuum pump and the gas inlet valve, so that it can be realized that a pressure environment in which the pressure value is the same as or is similar to a preset pressure value is simulated and experimental demands in various pressure environments can be met; meanwhile, data during the experiment process can be transmitted by the air socket, so that it is convenient to carry out studies on the combustion process.
Description
Technical field
The present invention relates to the fire safety evaluating technical field, relate in particular to a kind of simulated experiment case.
Background technology
China's highlands lineament is complicated, and ancient building fire hazard source is numerous, and harmfulness is very big after the breaking out of fire.Because the plateau fire than the plains region, has its distinct feature.If indeterminate to fire characteristics then can be given the control of plateau fire and put out a fire to save life and property and bring a lot of adverse influences.Mainly be through low-pressure cabinet or vacuum tank in the prior art, simulate required atmospheric pressure.But realize fuel combustion characteristics and the research of rule under the altitude environment, need guarantee that the pressure and the oxygen concentration of in combustion experiment process mesolow case or vacuum tank, being simulated do not change, and are consistent with the plateau open environment.And existing low-pressure cabinet or vacuum tank all can't be realized above-mentioned requirements, simulate the experimental situation consistent with the plateau open environment.
Summary of the invention
In view of this, the present invention provides a kind of simulated experiment case, to solve the problem that prior art mesolow case or vacuum tank can't simulate the experimental situation consistent with the plateau open environment.Its concrete scheme is described below:
A kind of simulated experiment case is applied to burning test, comprising:
Sealed combustion chamber; Said firing chamber comprises: the pressure transducer that detects said internal pressure of combustion chamber value; The aviation socket, two aviation plugs on the said aviation socket are supplied power and data transmission to the surveying instrument in the firing chamber respectively, are provided with the some range of ignition;
Be arranged at the combustion gas gas admittance valve on the chamber wall;
Be arranged at bottom, said firing chamber, with the solenoid valve that said pressure transducer links to each other, whether said solenoid valve exceeds the preset pressure value scope according to the force value of said pressure transducer collection is come switching, controls said firing chamber and extraneous partition or UNICOM;
Be arranged at below, said firing chamber, be communicated with said firing chamber through aspirating hole, and the vacuum pump that links to each other with said pressure transducer;
Control the control panel of said firing chamber work.
Preferably, also comprise: be arranged at the tonifying Qi gas admittance valve that bottom, said firing chamber is in communication with the outside.
Preferably, said control panel comprises: the communication interface that links to each other with computing machine;
Control the button ignition switch of said some range igniting;
Link to each other with power supply, circuit is carried out the air conservation switch of short circuit, electric leakage and power-off protection;
The touch screen of preset pressure value in the said firing chamber is set.
Preferably, said some range is provided with cover plate.
Preferably, said firing chamber also comprises: the rotary handle that links to each other with said some range.
Preferably, said firing chamber also comprises: link to each other with said aviation socket, gather the camera of burning vision signal, said burning vision signal is exported through said aviation socket.
Preferably, said firing chamber also comprises: hermatic door, and be arranged at the dense block on the said hermatic door.
Preferably, also comprise the thermopair of Research on Flame Temperature Measurement, said thermopair links to each other with said aviation socket through acquisition module.
Preferably, also comprise: link to each other with said aviation socket, gather by the balance of combustible substance amount loss rate signal, said mass loss rate signal is exported through said aviation socket.
Preferably, said experimental box also comprises the pulley that is arranged at the bottom of the case.
The disclosed simulated experiment case of the embodiment of the invention; Through being set, vacuum pump and gas admittance valve constantly regulate the force value in the experimental box automatically; Can realize simulating and the preset identical or close environmental pressure of force value; Satisfy the experiment needs under the various pressure environments, through the aviation socket data in the experimentation are transmitted simultaneously, made things convenient for Study on Combustion Process.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the invention 1 disclosed simulated experiment case;
Fig. 2 is the structural representation of the embodiment of the invention 1 disclosed control panel;
Fig. 3 is the structural representation of the embodiment of the invention 2 disclosed firing chambers;
Fig. 4 is the structural representation of the embodiment of the invention 2 disclosed aviation sockets;
Fig. 5 is the inner structure synoptic diagram of the embodiment of the invention 2 disclosed taps;
The structural representation of firing chamber when Fig. 6 is the embodiment of the invention 2 disclosed experiments.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention discloses a kind of simulated experiment case, be applied to burning test, can simulate the burning situation of the different pressures demand that meets requirement of experiment according to predefined force value.Its embodiment is described below:
Embodiment one
The structure of the embodiment of the invention 1 disclosed simulated experiment case is as shown in Figure 1; Comprise: sealed combustion chamber 11; Said firing chamber 11 comprises: be arranged on the inwall of said firing chamber, detect the pressure transducer 111 of said internal pressure of combustion chamber value, be arranged at the aviation socket 112 in the said firing chamber; Two aviation plugs on the said aviation socket are supplied power and data transmission to the surveying instrument in the firing chamber respectively, are provided with the some range 114 of ignition 113;
Be arranged at 11 belows, said firing chamber; The vacuum pump 12 that is communicated with said firing chamber through the aspirating hole on the said firing chamber 115; Because the carbon dioxide temperature after the burning is higher; Usually can accumulate in the top of firing chamber,, be convenient to discharge the firing chamber so said aspirating hole 115 is arranged at the top of firing chamber.
Be arranged at outside the said firing chamber 11, control the control panel 13 of said firing chamber work through a plurality of control knobs.The structure of control panel 13 is as shown in Figure 2, comprising: the communication interface 131 that links to each other with computing machine; Control the button ignition switch 132 of said lighter 114 igniting; Link to each other with power supply, circuit is carried out the air conservation switch 133 of short circuit, electric leakage and power-off protection; The touch screen 134 of preset pressure value in the said firing chamber 11 is set.
Be arranged at the combustion gas gas admittance valve 14 on 11 walls of firing chamber, combustion gas gas admittance valve 14 links to each other with the Gas Pipe in the external world when carrying out the gaseous combustion experiment, experimentizes through this gas valve transporting combustible gases in experimental box.Combustion gas gas admittance valve 14 is arranged on the bottom of burning usually, and it highly is lower than balance or gas burner in the firing chamber, avoids inflammable gas to flow directly to the top of flame, influences the shape of flame, brings error to experimental data.Except that this gas admittance valve, also comprise the tonifying Qi gas admittance valve 15 that is arranged at 11 bottoms, firing chamber.
Be arranged at bottom, said firing chamber; The solenoid valve 16 that links to each other with said pressure transducer; Whether the force value that said solenoid valve 16 is gathered according to said pressure transducer 111 exceeds the preset pressure value scope is come switching, controls said firing chamber 11 and cuts off or UNICOM with extraneous;
In order to make experimental box be convenient to move, the bottom of experimental box is provided with pulley 17 in the present embodiment.Also view window 18 can be set on the firing chamber simultaneously, so that the observation experiment process.
Be example with the gaseous combustion experiment below, the course of work of this experimental box of brief account.
At first firing chamber 11 is sealed,, realize guaranteeing under the situation of combustion chamber sealing through aviation socket 113 through said air conservation switch 133 energized; Device in the firing chamber is supplied power; Simultaneously with the data in the combustion process,, transfer out like temperature data of flame etc.Set the force value that this test needs simulation through the touch screen on the control panel 13 134; And start vacuum pump 12 and make its work, when the pressure when pressure transducer 111 detects firing chamber 11 in reaches preset value, through combustion gas air intake valve 14 importing inflammable gass; The combustion gas air intake valve links to each other with gas burner; Inflammable gas is incorporated into gas burner, and, lights after the ignition 113 on the reference mark range 114 is lighted a fire through the button ignition switch 132 on the control panel 13; In this process, to guarantee 14 air inlets of combustion gas gas admittance valve, carry out simultaneously with lighter 113 igniting.Avoid occurring perhaps lighting a fire evening because igniting too early, does not have inflammable gas in the firing chamber 11, and igniting is unsuccessful, the inflammable gas in the firing chamber 11 is too much, and the phenomenon of the excessive spot failure firearm of heat that moment produces takes place.In the combustion process, get into firing chamber 11, constantly consume the oxygen in the firing chamber simultaneously in the combustion process because the combustion gas gas admittance valve constantly replenishes combustion gas; Produce carbon dioxide, thus the pressure of firing chamber 11 can change, in order to guarantee the constant of pressure; Vacuum pump 12 is in running order always, the gas in the firing chamber 11 is discharged through aspirating hole 115, in the whole process; When but the force value of pressure transducer 111 collections is lower than the allowed band of predefined force value; Solenoid valve 16 is opened, and mends air automatically, and the pressure of regulating in the firing chamber 11 returns in the admissible scope; When but the force value of pressure transducer 11 collections was higher than the allowed band of predefined force value, solenoid valve 14 cut out.Aviation socket 112 is connected with extraneous power supply, and for equipment such as sensor in the firing chamber 11 or lighter are supplied power, and electric signal, data model that various device is produced are transferred to external computing machine.In the combustion process, through thermopair flame combustion chamber plume central temperature is detected, and pass through acquisition module; The signal of gathering is converted into temperature signal; Be transferred to space flight socket 112, and output on the external computing machine, analyze and store through space flight socket 112.Gaseous combustion amount in the combustion process can be calculated through the gas meter that links to each other with said burner that is arranged on the gas admittance valve, is convenient to follow-up research.When combustion experiment finishes, through tonifying Qi gas admittance valve 15 blanketing gas in the firing chamber, make its internal pressure identical with external pressure, open sealed combustion chamber then, finish experiment.
In the said process, the mode of the sealing that firing chamber 11 is carried out can perhaps adopt other sealing means for adopting the mode of hermatic door, so long as can realize the device with combustion chamber sealing, all is the scope that the present invention protects.
The disclosed experimental box of present embodiment can be simulated scene under the different pressures condition, carries out the gaseous combustion characteristic test, thereby for preventing and putting out the gas fire theoretical support is provided.The experimental box that present embodiment does not limit this structure can only carry out the gaseous combustion experiment, can carry out the liquid combustion experiment equally.
Embodiment two
The structure of the disclosed experimental box of present embodiment is whole identical with embodiment 1, and just the structure of firing chamber has been done some improvement, and the structure of the disclosed firing chamber of present embodiment is as shown in Figure 3; Except that comprising: pressure transducer 311, aviation socket 312, be provided with ignition 313 some range 314 and the aspirating hole that links to each other with vacuum pump 315, also comprise: be arranged at the said some cover plate on the range 314, cover plate can prevent to have volatile flammable liquid; Evaporate in the firing chamber when testing like fuel oil; Flame is excessive when causing igniting, and the function of burn out point firearm comprises the rotary handle 316 that links to each other with said some range simultaneously; Through regulating said rotary handle 316; Can cover plate be stirred, the position of the point of adjustment simultaneously range guarantees the normal operation of igniting; With the camera 317 that said aviation socket 312 links to each other, be used to write down dynamic flame combustion process, gather the image data in the combustion experiment.Firing chamber in the present embodiment seals through hermatic door 318, and said hermatic door 318 is provided with dense block 319.
Also comprise the illuminating lamp 3110 that is arranged on the said camera 317 simultaneously,, be convenient to the observation experiment process and take experimentation for luminance brightness preferably is provided in the firing chamber.
The structure of the aviation socket 312 in the present embodiment is as shown in Figure 4: comprise attaching plug 3121 and data pin 3122, realize the power supply and the data transmission of surveying instrument respectively.The inner connecting structure of its plug is as shown in Figure 5, and the two ends of probe 51 connect power lead respectively as attaching plug, perhaps connects data line as data pin, realizes the transmission of inside and outside power supply in firing chamber and data through probe.The centre seals through sealing gasket 52.
Simultaneously temp probe 3111 can also be set in the firing chamber, to gather combustion chamber temperature.
With regard to the liquid combustion experiment, introduce the course of work of the disclosed experimental box of present embodiment below:
In the firing chamber according to the good thermopair frame 61 of cloth shown in Figure 6; Oil tray 62 and electronic balance 63; Link to each other with said aviation socket 312 respectively, the temperature data with the thermopair collection is transferred to aviation socket 312 through data acquisition module simultaneously, and what electronic balance 63 was gathered also is transferred to aviation socket 312 by combustible substance amount loss rate signal; Output to outside the firing chamber then; In oil tray 62, pour an amount of methyl alcohol into, build the cover plate on the range 314, control the height of ignition 313 both positive and negative polarities and methyl alcohol liquid level well.With sealing door lock 319 hermatic door 318 is locked.Through air conservation switch connection power supply, configure the target, pressure value and make vacuum pump in running order through the touch-screen on the control panel.When the force value in the firing chamber reaches when setting pressure, press automatic button ignition switch, light methyl alcohol, rotation igniting rotary handle 316 is removed lighter 313 then, just can carry out the transmission of combustion experiment and synchronization of data.With the camera 317 that said aviation socket 312 links to each other, be used to write down dynamic flame combustion process, gather the image data in the combustion experiment.After treating that experiment finishes, stop the work of vacuum pump, open tonifying Qi gas admittance valve 32 and put into fresh air and just can open hermatic door 318 to normal pressure to the firing chamber.
The disclosed experimental box of present embodiment can be realized the oil sump fire burns test of the various liquid fuel under the hypoxemia low pressure condition, and the combustion characteristics of the oil sump fire under the research different pressures condition is for plateau fire fire prevention fire-fighting technique provides theoretical support.Simultaneously, present embodiment does not limit it can only carry out the liquid combustion experiment, and it can carry out the gaseous combustion experiment equally, described in its experimentation such as the embodiment 1.
The disclosed simulated experiment case of the embodiment of the invention has the following advantages at least:
(1) simulation test case disclosed by the invention utilizes vacuum pump, solenoid valve and sensor linkage manner, when pressure exceeds the required pressure of experiment; Vacuum pump is extracted gas in the chamber out, pressure control tested under the required pressure, and when pressure reduces above certain limit; Through putting into certain air with the solenoid valve of sensor interlock; Make its pressure return to required pressure limit, constantly replenish inflammable gas through the combustion gas gas admittance valve simultaneously, guarantee that the oxygen concentration in the firing chamber is certain; Guarantee pressure and oxygen concentration constant in the firing chamber, improved the degree of accuracy of testing.
(2) in the simulated experiment case disclosed by the invention,, when having prevented the volatile liquid burning,, improved the security of experiment on a fire support because the problem that causes the excessive burn out point firearm of ignition point flame that evaporates takes place through the mode of cover plate is set.
(3) in the simulation test case disclosed by the invention, under the situation that guarantees combustion chamber sealing,, and transmit, rich data is provided, be convenient to carry out follow-up study the collection of the data in real time in the experimentation through the aviation socket.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. an environmental simulation experimental box is characterized in that, is applied to burning test, comprising:
Sealed combustion chamber; Said firing chamber comprises: the pressure transducer that detects said internal pressure of combustion chamber value; The aviation socket, two aviation plugs on the said aviation socket are supplied power and data transmission to the surveying instrument in the firing chamber respectively, are provided with the some range of ignition;
Be arranged at the combustion gas gas admittance valve on the chamber wall;
Be arranged at bottom, said firing chamber, with the solenoid valve that said pressure transducer links to each other, whether said solenoid valve exceeds the preset pressure value scope according to the force value of said pressure transducer collection is come switching, controls said firing chamber and extraneous partition or UNICOM;
Be arranged at below, said firing chamber, be communicated with said firing chamber through aspirating hole, and the vacuum pump that links to each other with said pressure transducer;
Control the control panel of said firing chamber work.
2. experimental box according to claim 1 is characterized in that, also comprises: be arranged at the tonifying Qi gas admittance valve that bottom, said firing chamber is in communication with the outside.
3. experimental box according to claim 2 is characterized in that, said control panel comprises: the communication interface that links to each other with computing machine;
Control the button ignition switch of said some range igniting;
Link to each other with power supply, circuit is carried out the air conservation switch of short circuit, electric leakage and power-off protection;
The touch screen of preset pressure value in the said firing chamber is set.
4. experimental box according to claim 3 is characterized in that, said some range is provided with cover plate.
5. experimental box according to claim 4 is characterized in that, said firing chamber also comprises: the rotary handle that links to each other with said some range.
6. experimental box according to claim 5 is characterized in that, said firing chamber also comprises: link to each other with said aviation socket, gather the camera of burning vision signal, said burning vision signal is exported through said aviation socket.
7. experimental box according to claim 6 is characterized in that, said firing chamber also comprises: hermatic door, and be arranged at the dense block on the said hermatic door.
8. experimental box according to claim 7 is characterized in that, also comprises the thermopair of Research on Flame Temperature Measurement, and said thermopair links to each other with said aviation socket through acquisition module.
9. experimental box according to claim 8 is characterized in that, also comprises: link to each other with said aviation socket, gather by the balance of combustible substance amount loss rate signal, said mass loss rate signal is exported through said aviation socket.
10. according to any described experimental box among the claim 1-9, it is characterized in that said experimental box also comprises the pulley that is arranged at the bottom of the case.
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| CN201010261671.5A CN102375046B (en) | 2010-08-18 | 2010-08-18 | Simulation experiment box |
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| CN201010261671.5A CN102375046B (en) | 2010-08-18 | 2010-08-18 | Simulation experiment box |
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