CN102435705A - Test device for long tunnel furnace - Google Patents
Test device for long tunnel furnace Download PDFInfo
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- CN102435705A CN102435705A CN2011104260004A CN201110426000A CN102435705A CN 102435705 A CN102435705 A CN 102435705A CN 2011104260004 A CN2011104260004 A CN 2011104260004A CN 201110426000 A CN201110426000 A CN 201110426000A CN 102435705 A CN102435705 A CN 102435705A
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- control part
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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 long tunnel stove proving installation.
Background technology
During breaking out of fire, spreading of material combustion certainly will cause bigger fire, and in the fire flue gas often to the maximum threat of life.This standard of ASTM E84 is just from flame propagation and produce the fire resistance that assessment material is come in cigarette property these two aspects.This method is adopted by a large amount of in North America, is the U.S. and Canadian national standard, is legal testing standard.
The at present domestic unripe device that is used for ASTM E84 test, this export of building materials to China has caused imponderable loss.Physical arrangement for testing tool in the standard has a rough introduction, but for collection, the analysis of the controlling of equipment, data and calculate detailed scheme is not provided, this is provided with certain technical threshold for domestic research and development manufacturing.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, dependable performance, cost low, can on-line measurement and the long tunnel stove proving installation of analysis.
For solving the problems of the technologies described above, the present invention takes following technical scheme: a kind of long tunnel stove proving installation, it is characterized in that, comprising: the gas safe control part, its be used to control combustion gas safe opening, close and high-tension ignition; The wind speed control part, it is used for controlling and keeping the wind speed of test process; Data acquisition portion, it is used to gather temperature, blast and the smoke density in the said proving installation; With observing and controlling portion; Its control is stated the gas safe control part material to be tested is lighted; And gather and store temperature, blast and the smoke density of said material in test process in real time, and control said wind speed control part according to the blast that it records and remain in the predetermined scope with the wind speed of controlling in the said proving installation through said data acquisition portion; Said observing and controlling portion comprises data analysis unit, and it is used to calculate fire propagation index and smog generates index.
Further, said gas safe control part can be manually or the high-tension ignition time is set automatically.
Further, said wind speed control part comprises driver element, and said driver element is used for the aperture of damper.
Further, said proving installation also comprises the smoke detection unit that is used to gather said smoke density, and said smoke detection unit comprises light source and photoelectric source.
Further, said observing and controlling portion comprises correcting unit, and its result according to the standard material test calibrates systematic parameter.
Further, said observing and controlling portion comprises the transducer calibration unit, and it adopts the fit method of linearity, polynomial expression, exponential relationship formula that sensor is demarcated.
Further, said observing and controlling portion comprises the port arrangement unit, and it is used to dispose the interface of said data acquisition portion and each sensor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Be elaborated in the face of technical scheme of the present invention down.
As shown in Figure 1, the long tunnel stove proving installation among the present invention comprises: gas safe control part 4, wind speed control part (not shown), data acquisition portion 2 and observing and controlling portion 3; Wherein, said gas safe control part be used to control combustion gas safe opening, close and high-tension ignition; Said wind speed control part is used for controlling the wind speed that keeps test process; Said data acquisition portion 2 is used to gather temperature, blast and the smoke density in the said proving installation; Said observing and controlling portion controls said gas safe control part material to be tested is lighted; And gather and store temperature, blast and the smoke density of said material in test process in real time, and control said wind speed control part according to the blast that it records and remain in the predetermined scope with the wind speed of controlling in the said proving installation through said data acquisition portion; Further, said observing and controlling portion comprises data analysis unit, and said data analysis unit is used to calculate fire propagation index and smog generates index.Wherein, material to be tested places in the burner block 1.Therefore; Said long tunnel stove proving installation can be through the real-time monitoring to the blast in the test process; Wind speed in the proving installation is controlled in the 1.40-2.54mm water column scope all the time, makes the requirement of whole test process compliant, so that obtain correct test result.
Preferably, said gas safe control part can be manually or the high-tension ignition time is set automatically.Preferably, said gas safe control part comprises solid-state relay, auxiliary reclay, gas electromagnetic valve and high pressure spot device, thus realize said gas electromagnetic valve safe opening, close, high-tension ignition.For example, the operator can manually import the high-tension ignition time, and said then solid-state relay is given said gas electromagnetic valve power supply through auxiliary reclay, thereby gas electromagnetic valve is opened combustion gas is got into; Then by isolating high-pressure ignitor discharge generation electric spark, thereby light combustion gas; When pressing stop button, said solid-state relay, auxiliary reclay turn-off solenoid valve, thereby cut off combustion gas.Preferably, after reaching the said high-tension ignition time, stop high-tension ignition automatically duration of ignition.
Preferably, said wind speed control part comprises driver element, and said driver element is used for the aperture of damper, thereby realizes the control to wind speed.Preferably, said driver element is a motor.Standard-required keeps blast in test process in 1.40-2.54mm water column scope.
Preferably, said long tunnel stove proving installation also comprises differential pressure pick-up 5, and it is used to gather blast; Preferably, this sensor is given said observing and controlling portion with its wind pressure signal that collects through the data collecting card of said data acquisition portion, and judges that by said observing and controlling portion blast is whether in the scope of setting; If blast is higher than certain value; 2.54mm water column for example, the driver element of solid-state relay and auxiliary reclay rear drive air door then, preferably motor just changes; Air door is turned down, promptly reach the purpose that reduces wind speed; Otherwise, then driving said driver element, preferably motor counter-rotating is opened air door greatly, thereby strengthens wind speed.
Preferably, said proving installation also comprises the smoke detection unit 6 that is used to gather said smoke density, and said smoke detection unit 6 comprises light source and photoelectric source.Preferably, said light source is an incandescent lamp, and preferably, said incandescent lamp is 15W.Preferably, said photoelectric cell is a silicon photocell, and it is used to receive the light that said light source sends; The light that said light source sends passes owing to the burning smog that material to be tested produced and is received by said photoelectric cell; Then, photoelectric cell is transformed into electric signal with the light intensity that it receives, and the said data acquisition of process portion passes to said test department; The most said test department calculates luminous flux, and luminous flux is an important parameter that is used to reflect smoke density.Further, the short-circuit current linearity that can also utilize silicon photocell is characteristics preferably, through said test department it are demarcated; For example; Under smokeless state, open light source, this moment, the output voltage values of said silion cell was defined as 100% luminous flux; And when closing light source, the magnitude of voltage of its output is defined as 0 luminous flux.
Preferably, said observing and controlling portion comprises correcting unit, and its result according to the standard material test calibrates systematic parameter.For example; The user can proofread and correct materials such as cement plate or red oaks through correcting unit; Preferably; When the structural change or the maintenance of said long tunnel stove proving installation need use said correcting unit to carry out system compensation when re-assemblying, under the proper testing condition, recommend to carry out every year primary system and proofread and correct.Preferably, after each test or sensor calibration or system compensation were accomplished, said long tunnel stove proving installation can automatically reset, and cut off relevant source of the gas power supply.
Preferably, said observing and controlling portion comprises the transducer calibration unit, and it adopts the match of linearity or polynomial expression or exponential relationship formula etc., the various sensors in the said proving installation is demarcated, and can the result who demarcate be preserved in order to using.Preferably, can adopt dual mode to demarcate, for example, first kind is directly to export feedback voltage and desired value; Another kind is directly to read in feedback voltage from gathering port, and according to the desired value of importing, accomplishes and proofread and correct.Especially, when more emat sensor or sensing data have obvious deviation, just need calibration sensor, under the proper testing condition, recommend to carry out in per two months the primary transducer staking-out work.For example, cause the data deviation of luminous flux, can realize demarcation through the transducer calibration unit to the sensor in the smoke detection portion in order to prevent dust because of trickle on the camera lens.
Preferably; Said observing and controlling portion comprises the port arrangement unit; It is used to dispose the interface of said data acquisition portion and sensor; So that change corresponding annexation between input port and each sensor in the said data acquisition portion, or change the corresponding annexation between output port and each solid-state relay, dispose so that whole long tunnel stove proving installation has more flexibly according to the wiring needs.
Preferably, said observing and controlling portion comprises data analysis unit, and it is used to calculate fire propagation index and smog generates index, further, also can generate corresponding curve map, and preferably, said curve map comprises correction data.
Preferably, said data acquisition portion comprises data collecting card, and said data collecting card comprises input port and output port, and said input port is used for data acquisition, and said output port is used for control.Said input port has a plurality of, and respectively with smoke detection unit 6, at least No. 3 thermopairs 7, differential pressure pick-up 5 connects, to realize the sampling to the sensor.
Preferably, said proving installation also comprises sealing water supply installation 8.
Specify the course of work of the long tunnel stove proving installation among the present invention below.
At first, whole testing device is debugged, for example adjust the original state of wind speed, flame intensity, the combustion flue of initial temperature, and preheated burning everywhere to regulation, debugging smoke detection unit and test department are installed treated specimen then.
Then, begin test, the situation of manual observation propagation of flame is simultaneously also carried out record by said observing and controlling portion, and in test process, test department is the record smoke density automatically.
During test, can the manual modification effluve duration of ignition, for example its default time is 5 seconds.After beginning igniting, gas electromagnetic valve is opened, and high-tension ignition simultaneously is activated, and carries out effluve by isolating high-pressure ignitor, thereby the combustion gas that from combustion head, discharges is lighted, to realize igniting.If igniting is success not, then leak detector can return a signal that is used to close gas electromagnetic valve, to close gas electromagnetic valve.
In the process of test, need wind speed 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 the control burner block.Further, temperature and the smoke density in the body of heater can be through observing and controlling portion real time and on line monitoring in test process.In the test process, the smoke particle of assembling in the pipeline can hinder the propagation of light, and the silicon photocell acknowledge(ment) signal is died down, thereby draws the variation tendency of optical density.Preferably, the test duration is 10 minutes, when test duration completion or Halfway Stopping, and can the automatic self-closing gas solenoid valve.
Said long tunnel stove proving installation among the present invention has following characteristics: (1) can automatically switch gas electromagnetic valve unlatching, close and regularly high-tension ignition, on the basis of the robotization that has realized igniting, taken into account security; (2) through gathering the feedback signal of differential pressure pick-up, according to the pressure limit that is provided with in advance, output motor rotating drive signal has realized the automatic adjustment of test period wind speed, has avoided frequent manual loaded down with trivial details and control error; (3) smoke detection portion has the succinct characteristics of design, and it utilizes the high precision collecting card, is easy to realize the degree of accuracy measured, and through field calibration, measuring accuracy can be up to 0.01%; In addition, it also has the characteristics that mechanism design is reasonable, be convenient to demarcate, and can improve tester's testing efficiency; (4) have and control advantage easily.
Claims (7)
1. a long tunnel stove proving installation is characterized in that, comprising:
The gas safe control part, its be used to control combustion gas safe opening, close and high-tension ignition;
The wind speed control part, it is used for controlling and keeping the wind speed of test process;
Data acquisition portion, it is used to gather temperature, blast and the smoke density in the said proving installation; With
Observing and controlling portion; Its control is stated the gas safe control part material to be tested is lighted; And gather and store temperature, blast and the smoke density of said material in test process in real time, and control said wind speed control part according to the blast that it records and remain in the predetermined scope with the wind speed of controlling in the said proving installation through said data acquisition portion;
Said observing and controlling portion comprises data analysis unit, and it is used to calculate fire propagation index and smog generates index.
2. long tunnel stove proving installation as claimed in claim 1 is characterized in that, said gas safe control part can be manually or the high-tension ignition time is set automatically.
3. according to claim 1 or claim 2 long tunnel stove proving installation is characterized in that said wind speed control part comprises driver element, and said driver element is used for the aperture of damper.
4. like each described long tunnel stove proving installation of claim 1-3, it is characterized in that said proving installation also comprises the smoke detection unit that is used to gather said smoke density, said smoke detection unit comprises light source and photoelectric source.
5. long tunnel stove proving installation as claimed in claim 4 is characterized in that, said observing and controlling portion comprises correcting unit, and its result according to the standard material test calibrates systematic parameter.
6. long tunnel stove proving installation as claimed in claim 5 is characterized in that, said observing and controlling portion comprises the transducer calibration unit, and it adopts the fit method of linearity, polynomial expression, exponential relationship formula that sensor is demarcated.
7. long tunnel stove proving installation as claimed in claim 6 is characterized in that, said observing and controlling portion comprises the port arrangement unit, and it is used to dispose the interface of said data acquisition portion and each sensor.
Priority Applications (1)
| 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 |
|---|---|---|---|
| CN201110426000.4A CN102435705B (en) | 2011-12-19 | 2011-12-19 | Test device for long tunnel furnace |
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| CN102435705A true CN102435705A (en) | 2012-05-02 |
| CN102435705B 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 (2)
| Title |
|---|
| "室内装修的火灾危险性", 《消防技术与产品信息》, no. 02, 10 February 1998 (1998-02-10) * |
| ASTM INTERNATIONAL: "《ASTM E84 建筑材料表面燃烧特性的实验方法》", 31 December 2006, article "建筑材料表面燃烧特性的实验方法", pages: 1-20 * |
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| Publication number | Publication date |
|---|---|
| CN102435705B (en) | 2014-06-11 |
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