CN205581069U - Material combustion experiment device of simulation low pressure environment - Google Patents
Material combustion experiment device of simulation low pressure environment Download PDFInfo
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- CN205581069U CN205581069U CN201620259898.9U CN201620259898U CN205581069U CN 205581069 U CN205581069 U CN 205581069U CN 201620259898 U CN201620259898 U CN 201620259898U CN 205581069 U CN205581069 U CN 205581069U
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- box
- baffle
- pressure environment
- quartz ampoule
- hermatic door
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Abstract
The utility model discloses a material combustion experiment device of simulation low pressure environment, including sample heating device and pressure control device, pressure control device can regulate and control different atmospheric pressure environment to study at the combustion product under the different pressure environment the material, the technique blank in correlative study field has been filled to this experimental apparatus, and is significant to reducing with the emergence of controlling plateau, high altitude fire incident. Reduce the influence that sample combustion processes changes to ambient pressure through the baffle -box for the inside pressure of quartz capsule can remain unchanged basically, combustion product in with the quartz capsule fully discharges through the air discharge fan for gaseous intensive mixing in baffle -box and the quartz capsule, the gas strength keeps the unanimity, has guaranteed the accuracy of test. The existence of the 2nd sealing door and film for gas pressure in the sample collection in -process baffle -box remains unchanged, and so as to is convenient more to test combustion product with accurately gathering.
Description
Technical field
This utility model relates to a kind of material combustion experimental provision, particularly tests the experimental provision of material combustibility at various pressures.
Background technology
Increasingly be widely used in along with the development of polymer material science Yu technology, new polymers and composite thereof building, electrically, traffic, the field such as national defence and Aero-Space.But major part macromolecular material belongs to combustible material, is the most easily ignited and initiation fire, not only cause huge material property loss, the simultaneously life security of the poison gas more entail dangers to people that its burning produces, and ecological environment is caused have a strong impact on.Fire smoke toxic hazard problem has become as one of fire-fighting in present age key subjects being badly in need of solution.
Fire smoke release conditions changes along with the change of fire scenario, and the change of ambient temperature, pressure, oxygen concentration, ventilation situation etc. all will produce material impact for the ignition process of material, the spreading and propagation of flame and the kind of fire smoke and concentration etc..Progressively highlight along with the fire safety evaluating under the enforcement of China's strategy to develop western regions, and the special environment such as the low pressure in the high speed development of aeronautical and space technology, plateau and high-altitude, hypoxia prevents and treats problem.
null20 century 70s are to the nineties，American National Standard and technical research institute (National Institute of Standard and Technology，NIST)、U.K. Ministry of Defence and DIN mechanism etc. have developed a lot of device for material combustion performance test，The particularly little yardstick assay device of fire smoke toxotest，Such as NBS smoke density case、Cone calorimetry、DIN 53436 tube furnace etc.，Said apparatus can be to the temperature in material combustion environment、Oxygen concentration、Ventilation situation etc. carries out certain regulation and control，But the most all cannot regulate and control this important environmental factors of atmospheric pressure，Therefore，The combustion process of material under low pressure scene cannot be simulated，So that the research of fire preventing and treating is little under the special environment such as plateau and high-altitude.
Utility model content
This utility model is for avoiding the weak point existing for above-mentioned prior art, it is provided that a kind of material combustion experimental provision simulating lower pressure environment.
This utility model adopts the following technical scheme that
A kind of material combustion experimental provision simulating lower pressure environment, including sample heating device and pressure control device；
Described sample heating device includes quartz ampoule and the tube furnace being enclosed within outside quartz ampoule；The sample cell for loading detected materials it is placed with in described quartz ampoule；Described sample cell one end connects the Magnet pond for loading magnetite；Fix one block of magnetite by annulus outside described quartz ampoule, interact thus mobile example pond for the magnetite with sample cell one end；The two ends of described quartz ampoule are formed there through front tube and tail end pipe in tube furnace；Described tail end pipe passes through flange seal, described flange is provided with an exhaust fan and for the air inlet of ventilation in quartz ampoule, and exhaust fan is for discharging the gas in quartz ampoule；Described front tube is connected to seal on baffle-box and by high-temperature seal ring；
Described pressure control device includes baffle-box, vacuum meter, pump-line and vacuum pump；It is provided with on described baffle-box and can open the first hermatic door, after experiment completes, can open and can open hermatic door, blending bin is cleared up；It is provided with on described first hermatic door and can open the second hermatic door；Described second hermatic door peripheral seal pastes a circle thin film；Connect on described baffle-box and have vacuum meter and pump-line；Connect on described pump-line and have valve, vacuum pump and sample collecting test device.
The distance in described sample cell and Magnet pond is not less than the half of tube furnace length.
Described sample cell and Magnet pond perimeter ridge are to prevent sample and magnetite shift position in operation.
Described annulus can drive magnetite to move back and forth on quartz ampoule together.
Described baffle-box is cylinder.It is cylindric that to compare other shape compressive properties more preferable.Described baffle-box is supported by support.
Being provided with rotary type keeper on described second hermatic door, keeper handle is positioned at the another side of the second hermatic door.
Described thin film can enter baffle-box and still keep the sealing of baffle-box when the second hermatic door is opened, and when gathering gaseous sample, thin film is for equalizing and buffering case inner and outer air pressure.
Described membrane surface area is close to baffle-box area.
Described vacuum pump is connected on pump-line through smoke filter.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
(1), this utility model provides a kind of material combustion experimental provision simulating low-pressure combustion environment, pressure control device can regulate and control different atmospheric pressure environment, thus material combustion product under different pressures environment is studied, the technological gap of Related Research Domain filled up by this experimental provision, and the generation for minimizing and control plateau, high-altitude fire incident is significant；
(2), this utility model pressure control device reduces the impact on ambient pressure variations of the sample combustion process by baffle-box so that the pressure within quartz ampoule can be held essentially constant；
(3), the combustion product in quartz ampoule is fully discharged by this utility model by exhaust fan so that the gas in baffle-box and quartz ampoule is sufficiently mixed, and gas concentration keeps consistent, it is ensured that the accuracy of test；
(4), this utility model the second hermatic door and the existence of thin film so that during sample collecting, the gas pressure in baffle-box keeps constant such that it is able to convenient and collecting test combustion product exactly.
Accompanying drawing explanation
The structural representation of Fig. 1 this utility model experimental provision.
Fig. 2 this utility model first seals the structural representation of the interior one side of every.
Label in figure: 1 is quartz ampoule；2 is tube furnace；3 is sample cell；4 is magnetite；5 is Magnet pond；6 is annulus；7 is flange；8 is exhaust fan；9 is air inlet；10 is baffle-box；11 is high-temperature seal ring；12 is vacuum meter；13 is pump-line；14 is vacuum pump；15 is the first hermatic door；16 is the second hermatic door；17 is thin film；18 is valve；19 test device for sample collecting；20 is support；21 is keeper；22 is door handle；23 is smoke filter.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention further illustrates this utility model.
As it is shown in figure 1, the material combustion experimental provision of the simulation lower pressure environment of the present embodiment, this experimental provision includes sample heating device and pressure control device；
Sample heating device includes quartz ampoule 1 and the tube furnace 2 being enclosed within outside quartz ampoule 1；The sample cell 3 for loading detected materials it is placed with in quartz ampoule 1；Sample cell 3 one end connects the Magnet pond 5 for loading magnetite 4；The distance in sample cell 3 and Magnet pond 5 is not less than the half of tube furnace 2 length；Sample cell 3 and Magnet pond 5 perimeter ridge are to prevent sample and magnetite 4 shift position in operation；Quartz ampoule 1 is outer fixes one block of magnetite 4 by annulus 6, and annulus 6 can drive magnetite 4 to move back and forth on quartz ampoule 1 together, thus interacts mobile example pond 3 with the magnetite 4 of sample cell 3 one end；The two ends of quartz ampoule 1 are formed there through front tube and tail end pipe in tube furnace 2；Tail end pipe is sealed by flange 7, flange 7 is provided with an exhaust fan 8 and for the air inlet 9 of ventilation in quartz ampoule 1, and exhaust fan 8 is for discharging the gas in quartz ampoule 1；Front tube is connected on baffle-box 10 and is sealed by high-temperature seal ring 11；
Pressure control device includes baffle-box 10, vacuum meter 12, pump-line 13 and vacuum pump 14；Baffle-box 10 is in cylindrical and supported by support 20, and cylindric to compare other shape compressive properties more preferable；It is provided with on baffle-box 10 and can open the first hermatic door 15, after experiment completes, can open and can open the first hermatic door 15, blending bin 10 is cleared up；On first hermatic door, 15 are provided with and can open the second hermatic door 16；Being provided with rotary type keeper 21 on second hermatic door 16, keeper handle 22 is positioned at the another side of the second hermatic door 16.Second hermatic door 16 peripheral seal pastes a circle thin film 17；Thin film 17 can enter baffle-box 10 when the second hermatic door 16 is opened but still can keep the sealing of baffle-box 10, and when gathering gaseous sample, thin film 17 is for equalizing and buffering case 10 inner and outer air pressure；Thin film 17 surface area is close to baffle-box 10 area；Connect on baffle-box 10 and have vacuum meter 12 and pump-line 13；Connect on pump-line 13 and have valve 18, vacuum pump 14 and sample collecting test device 19；Vacuum pump 14 is connected on pump-line through smoke filter 23.
Work process of the present utility model is as follows: set and maintain experiment desirable value by tube furnace 2 temperature；Measured material is positioned in sample cell 3, sample cell 3 is positioned in quartz ampoule 1, and sealed by flange 7；Close the one 15 and second hermatic door 16, start vacuum pump 14 to vacuum meter 12 stable reading at experiment desirable value；Promote annulus 6, and interacted by external magnet 4 in quartz ampoule 1 sample is advanced in tube furnace 2；Treat that sample combustion terminates, open exhaust fan 8, be passed through gas from air inlet 9 and recover to zero to vacuum meter 12 reading, close air inlet 9；Open the second hermatic door 16；Open sample collecting test device 19, the produced flue gas of analysis of material burning.
Claims (9)
1. the material combustion experimental provision simulating lower pressure environment, it is characterised in that: include sample heating device and pressure control device；
Described sample heating device includes quartz ampoule and the tube furnace being enclosed within outside quartz ampoule；The sample cell for loading detected materials it is placed with in described quartz ampoule；Described sample cell one end connects the Magnet pond for loading magnetite；Fix one block of magnetite by annulus outside described quartz ampoule, interact thus mobile example pond for the magnetite with sample cell one end；The two ends of described quartz ampoule are formed there through front tube and tail end pipe in tube furnace；Described tail end pipe passes through flange seal, described flange is provided with an exhaust fan and for the air inlet of ventilation in quartz ampoule, and exhaust fan is for discharging the gas in quartz ampoule；Described front tube is connected to seal on baffle-box and by high-temperature seal ring；
Described pressure control device includes baffle-box, vacuum meter, pump-line and vacuum pump；It is provided with on described baffle-box and can open the first hermatic door, after experiment completes, can open and can open hermatic door, blending bin is cleared up；It is provided with on described first hermatic door and can open the second hermatic door；Described second hermatic door peripheral seal pastes a circle thin film；Connect on described baffle-box and have vacuum meter and pump-line；Connect on described pump-line and have valve, vacuum pump and sample collecting test device.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: the distance in described sample cell and Magnet pond is not less than the half of tube furnace length.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: described sample cell and Magnet pond perimeter ridge are to prevent sample and magnetite shift position in operation.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: described annulus can drive magnetite to move back and forth on quartz ampoule together.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: described baffle-box is cylinder, and cylindric other shape compressive properties of comparing are more preferable, and described baffle-box is supported by support.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: being provided with rotary type keeper on described second hermatic door, keeper handle is positioned at the another side of the second hermatic door.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterized in that: described thin film can enter baffle-box and still keep the sealing of baffle-box when the second hermatic door is opened, when gathering gaseous sample, thin film is for equalizing and buffering case inner and outer air pressure.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: described membrane surface area is close to baffle-box area.
A kind of material combustion experimental provision simulating lower pressure environment the most according to claim 1, it is characterised in that: described vacuum pump is connected on pump-line through smoke filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259898.9U CN205581069U (en) | 2016-03-29 | 2016-03-29 | Material combustion experiment device of simulation low pressure environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620259898.9U CN205581069U (en) | 2016-03-29 | 2016-03-29 | Material combustion experiment device of simulation low pressure environment |
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| CN205581069U true CN205581069U (en) | 2016-09-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675796A (en) * | 2016-03-29 | 2016-06-15 | 中国科学技术大学 | Material combustion experiment device capable of simulating low-pressure environment |
| CN110376329A (en) * | 2019-06-28 | 2019-10-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of change of current change insulating materials corrosion chamber and method of consideration altitude environment |
-
2016
- 2016-03-29 CN CN201620259898.9U patent/CN205581069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675796A (en) * | 2016-03-29 | 2016-06-15 | 中国科学技术大学 | Material combustion experiment device capable of simulating low-pressure environment |
| CN110376329A (en) * | 2019-06-28 | 2019-10-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of change of current change insulating materials corrosion chamber and method of consideration altitude environment |
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