CN102435705B - Test device for long tunnel furnace - Google Patents
Test device for long tunnel furnace Download PDFInfo
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- CN102435705B CN102435705B CN201110426000.4A CN201110426000A CN102435705B CN 102435705 B CN102435705 B CN 102435705B CN 201110426000 A CN201110426000 A CN 201110426000A CN 102435705 B CN102435705 B CN 102435705B
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Abstract
The invention relates to a test device for a long tunnel furnace, which is characterized in that the test device comprises a gas safety control part, an air speed control part, a data collecting part and a test and control part, wherein the gas safety control part is used for controlling the safe turn-on/off of the gas and high-pressure ignition; the air speed control part is used for controlling and maintaining an air speed during a test process; the data collecting part is used for collecting a temperature, an air pressure and a smog density in the test device; the test and control part is used for controlling the gas safety control part to ignite a material to be tested, collecting and storing the temperature, the air pressure and the smog density of the material during the test process through the data collecting part in real time, and controlling the air speed control part to maintain the air speed in the test device within a preset scope according to the tested air pressure; and the test and control part comprises a data analyzing unit which is used for calculating a flame propagation index and a smog generation index. The test device has the advantages of simple structure, reliable property, low cost and on-line measuring and analysis capabilities.
Description
Technical field
The present invention relates to a kind of proving installation, particularly relate to a kind of test device for long tunnel furnace.
Background technology
When breaking out of fire, spreading of material combustion certainly will cause larger fire, and the flue gas threat to life maximum often in fire.This standard of ASTM E84 is just from flame propagation and the fire resistance of producing cigarette these two aspects and come assessment material.The method is adopted in a large number in North America, is the U.S. and Canadian national standard, is legal testing standard.
The at present domestic unripe device for ASTM E84 test, this has caused imponderable loss to Chinese export of building materials.In standard, have a rough introduction for the physical arrangement of testing tool, but do not provide detailed scheme for the manipulation of equipment, collection, analysis and the calculating of data, this is provided with certain technical threshold for domestic research and development manufacture.
Summary of the invention
The object of this invention is to provide a kind of simple in structure, dependable performance, cost low, can on-line measurement and the test device for long tunnel furnace of analysis.
For solving the problems of the technologies described above, the present invention takes following technical scheme: a kind of test device for long tunnel furnace, it is characterized in that, comprising: gas safe control part, its for control combustion gas safe opening, close and high-tension ignition; Wind speed control part, it is for controlling and keep the wind speed of test process; Data acquisition portion, it is for gathering temperature, blast and the smoke density in described proving installation; With observing and controlling portion, its control is stated gas safe control part material to be tested is lighted, and by described data acquisition portion's Real-time Collection and store temperature, blast and the smoke density of described material in test process, and described in the blast control recording according to it, wind speed control part remains in predetermined scope with the wind speed of controlling in described proving installation; Described observing and controlling portion comprises data analysis unit, and it is for calculating fire propagation index and smoke creating index.
Further, described gas safe control part can arrange the high-tension ignition time manually or automatically.
Further, described wind speed control part comprises driver element, and described driver element is for the aperture of damper.
Further, described proving installation also comprises the smoke detection unit for gathering described smoke density, and described smoke detection unit comprises light source and photoelectric source.
Further, described observing and controlling portion comprises correcting unit, and its result according to standard material test is calibrated systematic parameter.
Further, described observing and controlling portion comprises transducer calibration unit, and it adopts the method for the matching of linearity, polynomial expression, relationships of indices to demarcate sensor.
Further, described observing and controlling portion comprises port arrangement unit, and it is for configuring the interface of described data acquisition portion and each sensor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below technical scheme of the present invention is elaborated.
As shown in Figure 1, the test device for long tunnel furnace in the present invention, comprising: gas safe control part 4, wind speed control part (not shown), data acquisition portion 2 and observing and controlling portion 3; Wherein, described gas safe control part for control combustion gas safe opening, close and high-tension ignition; Described wind speed control part is for controlling the wind speed that keeps test process; Described data acquisition portion 2 is for gathering temperature, blast and the smoke density in described proving installation; Described observing and controlling portion controls described gas safe control part material to be tested is lighted, and by described data acquisition portion's Real-time Collection and store temperature, blast and the smoke density of described material in test process, and described in the blast control recording according to it, wind speed control part remains in predetermined scope with the wind speed of controlling in described proving installation; Further, described observing and controlling portion comprises data analysis unit, and described data analysis unit is used for calculating fire propagation index and smoke creating index.Wherein, material to be tested is placed in burner block 1.Therefore, described test device for long tunnel furnace can pass through the Real-Time Monitoring to the blast in test process, wind speed in proving installation is controlled within the scope of 1.402.54mm water column all the time, makes whole test process meet the requirement of standard, to obtain correct test result.
Preferably, described gas safe control part can arrange the high-tension ignition time manually or automatically.Preferably, described gas safe control part comprises solid-state relay, auxiliary reclay, gas electromagnetic valve and isolating high-pressure ignitor, thus realize described gas electromagnetic valve safe opening, close, high-tension ignition.For example, operator can manually input the high-tension ignition time, and then described solid-state relay is given described gas electromagnetic valve power supply by auxiliary reclay, thereby gas electromagnetic valve is opened, combustion gas is entered; Then by isolating high-pressure ignitor discharge generation electric spark, thereby light combustion gas; In the time pressing stop button, described solid-state relay, auxiliary reclay turn-off solenoid valve, thereby cut off combustion gas.Preferably, after reaching the described high-tension ignition time, automatically stop high-tension ignition duration of ignition.
Preferably, described wind speed control part comprises driver element, and described driver element is for the aperture of damper, thus the control of realization to wind speed.Preferably, described driver element is motor.Standard-required keeps blast within the scope of 1.402.54mm water column in test process.
Preferably, described test device for long tunnel furnace also comprises differential pressure pick-up 5, it is for gathering blast, preferably, the wind pressure signal that this sensor is collected is given described observing and controlling portion by the data collecting card of described data acquisition portion, and judge that by described observing and controlling portion blast is whether in the scope of setting, if blast is higher than certain value, for example 2.54mm water column, the driver element of solid-state relay and auxiliary reclay rear drive air door, preferably motor forward, turns down air door, reaches the object that reduces wind speed; Otherwise, driving described driver element, preferably motor reversal, opens air door greatly, thereby strengthens wind speed.
Preferably, described proving installation also comprises the smoke detection unit 6 for gathering described smoke density, and described smoke detection unit 6 comprises light source and photoelectric source.Preferably, described light source is incandescent lamp, and preferably, described incandescent lamp is 15W.Preferably, described photoelectric cell is silicon photocell, the light that it sends for receiving described light source, the light that described light source sends is received by described photoelectric cell through the smog producing due to burning material to be tested, then, the light intensity that photoelectric cell is received is transformed into electric signal, and the described data acquisition of process portion passes to described test department, the most described test department calculates luminous flux, and luminous flux is an important parameter for reflecting smoke density.Further, can also utilize the linear feature preferably of short-circuit current of silicon photocell, by described test department, it is demarcated, for example, under smokeless state, open light source, now the output voltage values of described silion cell is defined as 100% luminous flux, and in the time closing light source, the magnitude of voltage of its output is defined as 0 luminous flux.
Preferably, described observing and controlling portion comprises correcting unit, and its result according to standard material test is calibrated systematic parameter.For example, user can proofread and correct the material such as cement plate or red oak by correcting unit, preferably, in the time that re-assemblying, the structural change of described test device for long tunnel furnace or maintenance need to use described correcting unit to carry out system compensation, under proper testing condition, recommend to carry out every year primary system correction.Preferably, after each test or sensor calibration or system compensation complete, described test device for long tunnel furnace can automatically reset, and cuts off relevant source of the gas power supply.
Preferably, described observing and controlling portion comprises transducer calibration unit, and it adopts the matching of linearity or polynomial expression or relationships of indices etc., the various sensors in described proving installation is demarcated, and the result of demarcating can be preserved in order to using.Preferably, can adopt in two ways and demarcate, for example, the first is static output feedback voltage and desired value; Another kind is directly to read in feedback voltage from gathering port, and according to the desired value of input, completes correction.Especially, in the time that more emat sensor or sensing data have obvious deviation, just need calibration sensor, under proper testing condition, recommend to carry out for every two months primary transducer staking-out work.For example, in order to prevent from causing because of dust trickle on camera lens the data deviation of luminous flux, can realize the demarcation to the sensor in smoke detection portion by transducer calibration unit.
Preferably, described observing and controlling portion comprises port arrangement unit, it is for configuring the interface of described data acquisition portion and sensor, to need to change annexation corresponding between input port in described data acquisition portion and each sensor according to wiring, or change the corresponding annexation between output port and each solid-state relay, so that having more flexibly, whole test device for long tunnel furnace configures.
Preferably, described observing and controlling portion comprises data analysis unit, and it further, also can generate corresponding curve map for calculating fire propagation index and smoke creating index, and preferably, described curve map comprises correction data.
Preferably, described data acquisition portion comprises data collecting card, and described data collecting card comprises input port and output port, and described input port is for data acquisition, and described output port is for controlling.Described input port has multiple, and with smoke detection unit 6, at least No. 3 thermopairs 7, differential pressure pick-up 5 connects, to realize the sampling to the sensor respectively.
Preferably, described proving installation also comprises sealing water supply installation 8.
Describe the course of work of the test device for long tunnel furnace in the present invention below in detail.
First, whole proving installation is debugged, for example, adjusted wind speed, flame intensity, the combustion flue of initial temperature, and preheated burning everywhere to the original state stipulating, debugging smoke detection unit and test department, then install treated test sample.
Then, start test, the situation of simultaneously manual observation propagation of flame is also carried out record by described observing and controlling portion, and in test process, test department can record smoke density automatically.
When test, can manual modification effluve the duration of ignition, for example its default time is 5 seconds.When starting after igniting, gas electromagnetic valve is opened, and high-tension ignition is simultaneously activated, and carries out effluve, thereby the combustion gas discharging from combustion head is lighted, to realize igniting by isolating high-pressure ignitor.If igniting is success not, leak detector can return to one for closing the signal of gas electromagnetic valve, to close gas electromagnetic valve.
In the process of test, wind speed need to be controlled in the scope of appointment, observing and controlling portion is according to the aperture of the testing result control air door of differential pressure pickup, thus the wind speed in control combustion body of heater.Further, the temperature in body of heater and smoke density can be by observing and controlling portion real time and on line monitoring in test process.In test process, the smoke particle of assembling in pipeline can hinder the propagation of light, and silicon photocell acknowledge(ment) signal is died down, thereby draws the variation tendency of optical density.Preferably, the test duration is 10 minutes, when the test duration completes or when Halfway Stopping, and can solenoid valve for automatic cutting off gas.
Described test device for long tunnel furnace in the present invention has following characteristics: (1) can automatically switch gas electromagnetic valve unlatching, close and timing high-tension ignition, on the basis of robotization of having realized igniting, taken into account security; (2) by gathering the feedback signal of differential pressure pick-up, according to the pressure limit setting in advance, output motor rotating drives signal, has realized the automatic adjustment of test period wind speed, has avoided frequent manual loaded down with trivial details and manipulation error; (3) smoke detection portion has the succinct feature of design, and it utilizes high precision collecting card, is easy to realize the degree of accuracy of measuring, and through field calibration, measuring accuracy can be up to 0.01%; In addition, it also has the feature that mechanism design is reasonable, be convenient to demarcation, can improve tester's testing efficiency; (4) have and manipulate advantage easily.
Claims (5)
1. a test device for long tunnel furnace, is characterized in that, comprising:
Gas safe control part, described gas safe control part comprises solid-state relay, auxiliary reclay, gas electromagnetic valve and isolating high-pressure ignitor, thereby realize described gas electromagnetic valve safe opening, close and high-tension ignition;
Wind speed control part, described wind speed control part comprises driver element, described driver element is for the aperture of damper; Described driver element is connected in described solid-state relay and described auxiliary reclay;
For gathering the smoke detection unit of described smoke density;
Thermopair;
Differential pressure pick-up;
Data acquisition portion, described data acquisition portion comprises data collecting card, described data collecting card respectively with described smoke detection unit, described thermopair, described differential pressure pick-up connects; With
Observing and controlling portion, described observing and controlling portion is connected in described gas safe control part, its control is stated gas safe control part material to be tested is lighted, and described observing and controlling portion is connected in described data collecting card, by described data acquisition portion's Real-time Collection and store temperature, blast and the smoke density of described material in test process, the blast that described observing and controlling portion records according to described data acquisition portion remains in predetermined scope with the wind speed of controlling in described proving installation by wind speed control part described in described solid-state relay and described auxiliary reclay control;
Described observing and controlling portion comprises data analysis unit, and it is for calculating fire propagation index and smoke creating index.
2. test device for long tunnel furnace as claimed in claim 1, is characterized in that, described gas safe control part can arrange the high-tension ignition time manually or automatically.
3. test device for long tunnel furnace as claimed in claim 1 or 2, is characterized in that, described smoke detection unit comprises light source and photoelectric source.
4. test device for long tunnel furnace as claimed in claim 3, is characterized in that, described observing and controlling portion comprises correcting unit, and its result according to standard material test is calibrated systematic parameter.
5. test device for long tunnel furnace as claimed in claim 4, is characterized in that, described observing and controlling portion comprises port arrangement unit, and it is for configuring the interface of described data acquisition portion and each sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426000.4A CN102435705B (en) | 2011-12-19 | 2011-12-19 | Test device for long tunnel furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110426000.4A CN102435705B (en) | 2011-12-19 | 2011-12-19 | Test device for long tunnel furnace |
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| CN102435705A CN102435705A (en) | 2012-05-02 |
| CN102435705B true CN102435705B (en) | 2014-06-11 |
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| CN201110426000.4A Active CN102435705B (en) | 2011-12-19 | 2011-12-19 | Test device for long tunnel furnace |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119598A (en) * | 1975-08-22 | 1978-10-10 | Pearson Glenn A | Fire retardant urea-formaldehyde compositions |
| CN101876655A (en) * | 2009-12-01 | 2010-11-03 | 中国检验检疫科学研究院 | Gas inflammability tester |
| US7862227B2 (en) * | 2007-03-28 | 2011-01-04 | Richard A. West | Method and apparatus for testing building materials |
| CN201859141U (en) * | 2010-09-21 | 2011-06-08 | 上海高分子材料研究开发中心 | Fire retardancy test device for glass fiber reinforced plastics |
-
2011
- 2011-12-19 CN CN201110426000.4A patent/CN102435705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119598A (en) * | 1975-08-22 | 1978-10-10 | Pearson Glenn A | Fire retardant urea-formaldehyde compositions |
| US7862227B2 (en) * | 2007-03-28 | 2011-01-04 | Richard A. West | Method and apparatus for testing building materials |
| CN101876655A (en) * | 2009-12-01 | 2010-11-03 | 中国检验检疫科学研究院 | Gas inflammability tester |
| CN201859141U (en) * | 2010-09-21 | 2011-06-08 | 上海高分子材料研究开发中心 | Fire retardancy test device for glass fiber reinforced plastics |
Non-Patent Citations (3)
| Title |
|---|
| ASTM International.建筑材料表面燃烧特性的实验方法.《ASTM E84 建筑材料表面燃烧特性的实验方法》.2006,第1-20页. * |
| 室内装修的火灾危险性.《消防技术与产品信息》.1998,(第02期), |
| 室内装修的火灾危险性;《消防技术与产品信息》;19980210(第02期);第43-50页 * |
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| CN102435705A (en) | 2012-05-02 |
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