CN202421106U - Furniture heat testing device - Google Patents
Furniture heat testing device Download PDFInfo
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- CN202421106U CN202421106U CN2011205343160U CN201120534316U CN202421106U CN 202421106 U CN202421106 U CN 202421106U CN 2011205343160 U CN2011205343160 U CN 2011205343160U CN 201120534316 U CN201120534316 U CN 201120534316U CN 202421106 U CN202421106 U CN 202421106U
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Abstract
The utility model relates to a furniture heat testing device which comprises a testing chamber and a gas collecting hood. The furniture heat testing device is characterized by also comprising an oxygen analyzing part, a fuel safety control part, a wind speed control part, a data acquisition part and a measurement and control part, wherein the oxygen analyzing part is used for analyzing oxygen consumed by furniture in a combustion process; the fuel safety control part is used for controlling on, off and ignition of fuel; the wind speed control part is used for controlling and keeping the wind speed in the testing process; the data acquisition part is used for acquiring temperature and wind pressure in the testing process and a measurement value of the oxygen analyzing part; and the measurement and control part is used for controlling the fuel safety control part to ignite the furniture, obtaining the temperature and the wind pressure as well as the measurement value of the oxygen analyzing part through the data acquisition part, and controlling the wind speed control part to control the wind speed in the testing device to be kept in a preset range according to the wind pressure, and the measurement and control part comprises a data analysis unit which is used for computing the heat release efficiency of the combustion of the furniture. The furniture heat testing device has the characteristics of simple structure, reliable performance, low cost, high safety, convenience, rapidness and high efficiency.
Description
Technical field
The utility model relates to a kind of proving installation, particularly a kind of furniture heat proving installation.
Background technology
Software furniture, especially mattress have used a large amount of polyurethane sponges, and polyurethane sponge is extremely inflammable, and American-European just have requirement to its anti-flammability test from eighties of last century the seventies, but only limit to undersized cigarette or the test of little burning things which may cause a fire disaster.
On July 1st, 2007; U.S. CPSC issues rules, and all its burning performancies of mattress of putting on the American market must be controlled, and its combustion testing index must satisfy: peak heat release rate (PRHR in (1) 30 minute test duration; The Peak Rate of Heat Release; Be meant in the test process that the maximum rate of heat release, unit are kilowatt KW) be no more than 200KW; (2) total hot burst size in preceding 10 minutes test duration (THR, The Total Heat Release is meant under the combustion testing condition, the heat that specimen discharges in test process altogether, unit are million burnt MJ) is no more than 15MJ.
Yet, to release the full-scale heat of mattress to the U.S. in 2007 and discharge this behave of measurement, domestic not corresponding rules or testing standard do not have ripe testing apparatus yet, and this is provided with obstacle for the outlet of Chinese mattress.Though the physical arrangement for testing tool in this standard has a rough introduction; But for collection, the analysis of the controlling of equipment, data and calculate detailed scheme is not provided, be provided with certain technical threshold equally so research and develop manufacturing at home for instrument.
Summary of the invention
The purpose of the utility model provides low, safe, convenient, fast, the furniture heat proving installation efficiently of a kind of simple in structure, dependable performance, cost.
For solving the problems of the technologies described above, the utility model is taked following technical scheme: a kind of furniture heat proving installation, comprise test cabinet and gas skirt, and it is characterized in that, also comprise: the oxygen analysis portion, it is used for analyzing furniture and consumes the oxygen that falls in combustion process; The gas safe control part, its be used to control combustion gas unlatching, close and light a fire; The wind speed control part, it is used for controlling and keeping the wind speed of test process; Data acquisition portion, it is used for the measured value of temperature, blast and the said oxygen analysis portion of collecting test process; With observing and controlling portion; Controlling said gas safe control part lights said furniture; And obtain the measured value of said temperature, blast and said oxygen analysis portion, and control said wind speed control part according to said blast 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 the rate of heat release of said furniture burning.
Further, said test cabinet has two, and it is arranged in the both sides of said gas skirt respectively.
Further, said gas safe control part adopts igniting of pilot lamp waiting mode or the igniting of high-field electrode discharge mode.
Further, said wind speed control part comprises driver element and blower fan, and said driver element is used to drive the rotation of said blower fan.
Further, said proving installation also comprises smoke detection portion, and it is used for gathering the smoke density of said furniture at test process, 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.
Further, said furniture heat proving installation also comprises emergency shower portion, when the temperature in the said test cabinet surpasses the temperature that is provided with in advance, starts said emergency shower portion.
Further, said furniture heat proving installation also comprises CO and CO
2Analysis portion, it is used for measuring CO and the CO that said furniture produces at test process
2Concentration.
The utlity model has simple in structure, dependable performance, low, safe, convenient, fast, the characteristics of high efficiency of cost.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model;
Fig. 2 is that test cabinet is arranged synoptic diagram.
Embodiment
Technical scheme in the face of the utility model is elaborated down.
As shown in Figure 1, the furniture heat proving installation in the utility model comprises test cabinet 1 and gas skirt 2, also comprises: oxygen analysis portion 3, gas safe control part, wind speed control part, data acquisition portion and observing and controlling portion; Wherein, said oxygen analysis portion is used for analyzing furniture and consumes the oxygen that falls in combustion process; Said gas safe control part be used to control combustion gas unlatching, close and light a fire; Said wind speed control part is used for controlling and keeping the wind speed of test process; Said data acquisition portion is used for the measured value of temperature, blast and the said oxygen analysis portion of collecting test process; Said observing and controlling portion; Being used to control said gas safe control part lights said furniture; And obtain the measured value of said temperature, blast and said oxygen analysis portion, and control said wind speed control part according to said blast 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 it is used to calculate the rate of heat release of said furniture burning.Through to furniture spent oxygen in test process, and the measurement of temperature, wind speed etc., peak heat release rate and total hot burst size in the test duration just can be tried to achieve by said observing and controlling portion.
Preferably, Fig. 2 shows the structural representation of said test cabinet and gas skirt.As shown in Figure 2, said test cabinet has two, and it is arranged in the both sides of said gas skirt respectively.Adopt this mode to arrange, expanded the test specification of said proving installation, except 16 CFR1633, the proving installation in the utility model is also applicable to ISO9705, and TB 133, TB129 and NFPA 265, NFPA 286 etc.Further, the utility model has also designed one section sampling pipe, and it inserts exhaust piping, and finally is connected with observing and controlling portion.In this sampling pipe, comprised based on oxygen consumption principle and measured the required integral unit of heat release.
Preferably, said gas safe control part adopts igniting of pilot lamp waiting mode or the igniting of high-field electrode discharge mode.Wherein, the mode of pilot lamp waiting mode igniting adopts manual operation, opens the solenoid valve of pilot lamp during test earlier, lights pilot lamp; When beginning to test, manually opened principal point firearm solenoid valve, when EOT, all air valves of hand off.High-field electrode discharge mode igniting can manual work be provided with the duration of ignition, come control electromagnetic valve to open and the turn-off time by the output port of the data collecting card in the said data acquisition portion, thereby the safety that realizes combustion gas is given altogether.Preferably, the said gas safe control part mode that adopts solid-state relay to drive auxiliary reclay realize to solenoid valve safe opening, close, and high-tension ignition.After the operator is through the manual input high-tension ignition time; Output port driving solid relay by said data collecting card; And then pass through auxiliary reclay by solid-state relay and give solenoid valve, solenoid valve is opened, so that combustion gas gets into; While high-tension electricity firearm discharge generation point spark, thus combustion gas lighted; When needs stop, said data collecting card output cut-off signals, this cut-off signals turn-offs solenoid valve through solid-state relay, auxiliary reclay, thereby cuts off source of the gas.
Preferably, said wind speed control part comprises driver element and blower fan 5, and said driver element is used to drive the rotation of said blower fan, thereby realizes the control to wind speed.Preferably, said driver element is a motor.Further, said observing and controlling portion controls the rotating speed of said blower fan, thereby realizes the control to the wind speed in the test cabinet according to the wind pressure value that said data acquisition portion collects.
Preferably, said proving installation also comprises differential pressure pick-up 7, 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; Then the driver element of solid-state relay and auxiliary reclay rear drive blower fan makes the rotating speed of blower fan slack-off, promptly reaches the purpose that reduces wind speed; Otherwise, then drive said driver element, the rotating speed of blower fan is accelerated, thereby strengthen wind speed.
Preferably, said proving installation also comprises smoke detection portion 6, and it is used for gathering the smoke density of said furniture at test process, and said smoke detection unit 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 furniture 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.The user can burning be to carry out system compensation in the husky basin of standard with standard propane, and the correction program operation is identical with test procedure, and the user can compare according to the calorific value and the standard calorific value of test, if exist difference to make amendment.When the structural change or the maintenance of said 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, 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, 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 each 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 testing device has more flexibly according to the wiring needs.
Preferably, said furniture heat proving installation also comprises emergency shower portion, when the temperature in the said test cabinet surpasses the temperature that is provided with in advance, starts said emergency shower portion.For example, full-scale mattress comprises a large amount of polyurethane sponges sometimes, if the unfavorable words of flame retardant effect will be sea of flame in the test cabinet during test, it is a breakneck thing that a large amount of heats discharge rapidly.Under the circumstances, therefore, be necessary to adopt described emergency shower portion; And the triggering temperature of this emergency shower portion can be set in advance; In the test process, if the temperature in the test cabinet surpasses the temperature that is provided with in advance, then the output terminal of said data collecting card is through solid-state relay, the auxiliary reclay rear drive motor spray that draws water; Urgent flame-out to realize, thus the security of testing guaranteed.
Preferably, said furniture heat proving installation also comprises CO and CO
2Analysis portion 4, it is used for measuring CO and the CO that said furniture produces at test process
2Concentration.Through CO and CO
2Concentration can further improve the precision of measuring rate of heat release.
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, multi-channel thermocouple, differential pressure pick-up is connected with the oxygen analysis portion, to realize the sampling to the sensor.Preferably, said chamber temperatures and pipe temperature are recorded by thermopair respectively.
Workflow in the face of the furniture heat proving installation in the utility model is elaborated down.
(1) gets into the startup preparatory stage, to carry out port arrangement, transducer calibration, system compensation.
Wherein, when carrying out port arrangement, change the port of said data collecting card according to the wiring needs, for each port of data collecting card is specified corresponding sensor; Transducer calibration comprises demarcates the photoelectric cell of said smoke detection portion, to prevent because the data deviation that trickle dust causes on the photronic camera lens; (3) system compensation; Adopt in a like fashion with test, the user can carry out system compensation with the burning in the husky basin of standard of standard propane, and the correction program operation is identical with test procedure; The user can compare according to the calorific value and the standard calorific value of test, if exist difference to revise; In addition, can also put a predefined triggering temperature value, for example 210 degrees centigrade for said emergency shower portion sets;
(2) be set the duration of ignition, be set the duration of ignition of said high-field electrode discharge mode igniting, for example be set at 5 seconds;
(3) igniting.
(4) begin test.
In test process, wind speed need be controlled in the scope of appointment, and said observing and controlling portion controls the rotating speed of said blower fan according to the blast that said data acquisition portion records, thus the wind speed in the control test cabinet.
In test process, also need temperature, the smoke density of real-time observing and controlling test cabinet.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 dies down, thereby draws the variation tendency of optical density.
Test duration is defaulted as 30 minutes, when time completion or Halfway Stopping, also can close burner switch 7 automatically.
(5) data analysis
The data analysis unit of said observing and controlling portion can realize the calculating to peak heat release rate in the test duration and total hot burst size, and can generate corresponding curve map according to image data.
(6) reset: after each test or correction were accomplished, system can automatically reset, and cut off relevant source of the gas power supply.
Proving installation in the utility model has two test cabinets and gas skirt, can satisfy the test needs of multiple standards, has expanded the test function of instrument; Have manually and automatic two kinds of sparking mode, increased practicality, wherein, the ignition mode open and close of solenoid valve of can automaticallying switch automatically, regularly high-tension ignition has realized that the robotization of igniting has taken into account security; Through the feedback signal of acquisition monitoring thermopair, according to the temperature that is provided with in advance, trigger the work of emergency shower control part, realized the security of test operation, avoided the test danger that brings because of the product anti-flammability is relatively poor; Increase smoke detection portion, taken into account different testing standards, widened the usable range of this device; High precision succinct, that utilize data collecting card that this smoke detection portion designs; Be easy to realize the degree of accuracy measured, through field calibration, its measuring accuracy is up to 0.01%; Because the smoke detection portion mechanism is reasonable in design, be convenient to demarcate, thereby improved tester's testing efficiency.
Claims (10)
1. a furniture heat proving installation comprises test cabinet and gas skirt, it is characterized in that, also comprises:
The oxygen analysis portion, it is used for analyzing furniture and consumes the oxygen that falls in combustion process;
The gas safe control part, its be used to control combustion gas unlatching, close and light a fire;
The wind speed control part, it is used for controlling and keeping the wind speed of test process;
Data acquisition portion, it is used for the measured value of temperature, blast and the said oxygen analysis portion of collecting test process; With
Observing and controlling portion; Controlling said gas safe control part lights said furniture; And obtain the measured value of said temperature, blast and said oxygen analysis portion, and control said wind speed control part according to said blast 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 the rate of heat release of said furniture burning.
2. furniture heat proving installation as claimed in claim 1 is characterized in that said test cabinet has two, and it is arranged in the both sides of said gas skirt respectively.
3. furniture heat proving installation as claimed in claim 1 is characterized in that, said gas safe control part adopts igniting of pilot lamp waiting mode or the igniting of high-field electrode discharge mode.
4. furniture heat proving installation as claimed in claim 1 is characterized in that said wind speed control part comprises driver element and blower fan, and said driver element is used to drive the rotation of said blower fan.
5. like each described furniture heat proving installation of claim 1-4; It is characterized in that; Said proving installation also comprises smoke detection portion, and it is used for gathering the smoke density of said furniture at test process, and said smoke detection unit comprises light source and photoelectric source.
6. furniture heat proving installation as claimed in claim 5 is characterized in that, said observing and controlling portion comprises correcting unit, and its result according to the standard material test calibrates systematic parameter.
7. furniture heat 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.
8. furniture heat proving installation as claimed in claim 5 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.
9. like each described furniture heat proving installation of claim 6-8, it is characterized in that said furniture heat proving installation also comprises emergency shower portion, when the temperature in the said test cabinet surpasses the temperature that is provided with in advance, start said emergency shower portion.
10. furniture heat proving installation as claimed in claim 9 is characterized in that, said furniture heat proving installation also comprises CO and CO
2Analysis portion, it is used for measuring CO and the CO that said furniture produces at test process
2Concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205343160U CN202421106U (en) | 2011-12-19 | 2011-12-19 | Furniture heat testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205343160U CN202421106U (en) | 2011-12-19 | 2011-12-19 | Furniture heat testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421106U true CN202421106U (en) | 2012-09-05 |
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ID=46745859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205343160U Expired - Lifetime CN202421106U (en) | 2011-12-19 | 2011-12-19 | Furniture heat testing device |
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| Country | Link |
|---|---|
| CN (1) | CN202421106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435633A (en) * | 2011-12-19 | 2012-05-02 | 通标标准技术服务(上海)有限公司 | Furniture heat test device |
| CN110632245A (en) * | 2019-09-25 | 2019-12-31 | 集美大学 | Fire smoke composition quantitative detection device |
-
2011
- 2011-12-19 CN CN2011205343160U patent/CN202421106U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435633A (en) * | 2011-12-19 | 2012-05-02 | 通标标准技术服务(上海)有限公司 | Furniture heat test device |
| CN110632245A (en) * | 2019-09-25 | 2019-12-31 | 集美大学 | Fire smoke composition quantitative detection device |
| CN110632245B (en) * | 2019-09-25 | 2022-04-19 | 集美大学 | Fire smoke composition quantitative detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |