CN104897722A - Miniature calorimeter - Google Patents
Miniature calorimeter Download PDFInfo
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- CN104897722A CN104897722A CN201510217215.3A CN201510217215A CN104897722A CN 104897722 A CN104897722 A CN 104897722A CN 201510217215 A CN201510217215 A CN 201510217215A CN 104897722 A CN104897722 A CN 104897722A
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Abstract
The invention discloses a miniature calorimeter. The miniature calorimeter includes a frame, and the frame is provided with a sample assembly, a gas feeding loop, a gas discharge loop and a control system; the sample assembly comprises a sample feeding electric cylinder, a support bar, a decomposition chamber and a combustion chamber; the gas inlet loop comprises an oxygen channel, a nitrogen channel, an air channel, a pressure regulating valve, a solenoid valve and a mass flow controller; the combustion chamber is provided with a gas outlet, and a gas discharged through the gas outlet passes through the mass flow controller and reaches a paramagnetic oxygen concentration sensor to form a gas discharge loop; and a control system controls gas feeding, gas discharge, sample sending and feedback of detection data. Experiments of the heat release rate, the effective combustion heat, the ignition temperature and other characteristics of a material are carried out based on an oxygen consumption principle, and the combustion behaviors of the material in real fire hazard environment are well simulated, so the miniature calorimeter has the advantages of low cost, high precision, easy operation, low requirements on an experiment place, and safe and easily controlled experiment process, and is suitable for the quantitative test of the flame retardation performances of various materials.
Description
Technical field
The present invention relates to the detecting instrument of a kind of Flame Retardancy energy, the miniature calorimeter that a kind of cost is low specifically, precision is high, easy to operate, applied widely.
Background technology
Along with the increase of the development of society, material wealth and the density of population, the frequency of fire is also increasing with the harm caused, and adopt fire proofing to be one of minimizing and the strategic measure preventing fire, over nearly 30 years, various countries give more and more closer concern to the flame-retarded of material; Because fire proofing burning behavior is in a fire very complicated, single combustion testing method can not describe its burning performance completely, therefore people attempt, by the research to fire proofing testing and characterization method, to evaluate the fire resistance of fire proofing from many aspects more imperfectly; And be used at present measuring and exosyndrome material fire resistance instrument as: oxygen index instrument, horizontal/vertical combustion instrument, oxygen bomb calorimeter all can not the burning behaviors of Reality simulation fire, and the qualitative test much instrument of material flame resistance performance test only can done flammable or difficult combustion or do not fired, be difficult to carry out quantitative test to material.
Summary of the invention
For the technical matters of above-mentioned existence, the object of the invention is: propose the miniature calorimeter that a kind of cost is low, precision is high, easy to operate, applied widely.
Technical solution of the present invention is achieved in that a kind of miniature calorimeter, comprises frame, frame is provided with sample assembly, air inlet loop, exhausting loop and control system; Described sample assembly comprises sample presentation electricity cylinder, support bar, decomposition chamber and firing chamber; Described air inlet loop comprises oxygen road, nitrogen road, air road, pressure regulator valve, solenoid valve and mass flow controller; Firing chamber is led to through pressure regulator valve, solenoid valve and mass flow controller in described oxygen road, and decomposition chamber is led to through pressure regulator valve, solenoid valve and mass flow controller in nitrogen road and air road; Described firing chamber is provided with exhausr port, and the gas that exhausr port is discharged arrives paramagnetic type oxygen concentration sensor through mass flow controller and forms exhausting loop; Described control system controls air inlet, exhaust, sample presentation and feedback and detects data.
Preferably, described decomposition chamber and firing chamber are provided with heating furnace; Heating furnace is divided into two sections, and one section corresponding with decomposition chamber, and one section corresponding with firing chamber; Described support bar, decomposition chamber, firing chamber and two sections of heating furnaces are provided with temperature sensor, and the temperature sensor on support bar is positioned at the downside of sample cup; Described support bar is arranged on sample presentation electricity cylinder by soft contact sealing module.
Preferably, described oxygen road, nitrogen road and air road respectively in frame correspondence be provided with oxygen intake, nitrogen inlet and air intake; Described oxygen road enters firing chamber by the second oxygen intake on firing chamber.
Preferably, the top of described frame is provided with and organizes louvre more.
Preferably, described frame is also provided with exsiccator, condenser and radiator fan, wherein radiator fan is arranged on the position corresponding with decomposition chamber and firing chamber.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
Miniature calorimeter of the present invention, based on oxygen utilization principle: the 1KG oxygen that often burns will produce this principle of heat of 13.1MJ, the HRR aspect of material combustion is tested, the burning behavior of simulation material under natural fire environment, is very helpful to the fire retardant mechanism of research material better; Micro-shape calorimeter cost is low, precision is high, operation is relatively easy, lower to the requirement of experimental site, experimentation is safer and easily controlled; During work, instrument just can determine basic chemical heat numerical value in several seconds, prediction material fire protecting performance, very little sample can be used, as 1-50mg, just can determine parameter rapidly, as particular thermal release rate, active combustion heat and ignition temperature, be suitable for the quantification test of the fire resistance of various material.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the schematic diagram of a kind of miniature calorimeter of the present invention;
Accompanying drawing 2 is the cut-open view of a kind of miniature calorimeter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
As shown in accompanying drawing 1-2, the miniature calorimeter of one of the present invention, comprises frame 1, frame 1 is provided with sample assembly, air inlet loop, exhausting loop and control system, and the top of frame 1 is provided with many group louvres 2; Described sample assembly comprises sample presentation electricity cylinder 11, support bar 12, decomposition chamber 13 and firing chamber 14; Described decomposition chamber 13 and firing chamber 14 are provided with heating furnace 15; Heating furnace 15 is divided into two sections, and one section corresponding with decomposition chamber 13, and one section corresponding with firing chamber 14; Described support bar 12, decomposition chamber 13, firing chamber 14 and two sections of heating furnaces 15 are provided with temperature sensor, and the temperature sensor of this instrument mainly uses thermopair; Temperature sensor on described support bar 12 is positioned at the downside of sample cup, and support bar 12 is arranged on sample presentation electricity cylinder 11 by soft contact sealing module 16; Described air inlet loop comprises oxygen road, nitrogen road, air road, pressure regulator valve 21, solenoid valve 22 and mass flow controller 23, and wherein pressure regulator valve 21 is arranged with the form of air three linked piece; Described oxygen road, nitrogen road and air road respectively in frame 1 correspondence be provided with oxygen intake 24, nitrogen inlet 25 and air intake 26; Wherein firing chamber 14 is led to through pressure regulator valve 21, solenoid valve 22 and mass flow controller 23 in oxygen road, and the oxygen on oxygen road enters firing chamber 14 by the second oxygen intake 27 on firing chamber 14; Decomposition chamber 13 is led to through pressure regulator valve 21, solenoid valve 22 and mass flow controller 23 in nitrogen road and air road; The oxygen on described oxygen road needed pre-configured concentration before entering oxygen intake 24, and nitrogen and air carry out anaerobic decomposition and aerobic breakdown respectively as required, and oxygen road, nitrogen road, air Lu Shangjun can install retaining valve additional, to avoid gas backstreaming; Described firing chamber 14 is provided with exhausr port 31, and the gas that exhausr port 31 is discharged arrives paramagnetic type oxygen concentration sensor 32 through mass flow controller 23 and forms exhausting loop; Paramagnetic type oxygen concentration sensor 32 is used for the oxygen concentration of analytical gas; Described frame 1 is also provided with exsiccator 41, condenser 42 and radiator fan 43, to keep drying and the cooling of instrument, wherein radiator fan 43 is arranged on the position corresponding with decomposition chamber 13 and firing chamber 14.
The electrical equipment 3 of described control system is arranged in frame 1, and control system comprises PLC control system, temperature control module, data acquisition, analysis module, PC control software and analog to digital converter and signal transmitting amplifier; Described PLC control system controls the corresponding actions of electrical equipment; Temperature control module controls the temperature of heating furnace, and regulates, simultaneously the detected value of collecting temperature sensor, and is exported to by detected value in PC control software; The data that Data acquisition and issuance module primary responsibility gathers and analyte sensors detects, as oxygen concentration, temperature etc.; PC control software comprises display section, control section, importation and calculating section: display section mainly shows the data collected, as temperature and oxygen concentration, and the corresponding actions of electrical equipment, as the through and off of switch; Control section inputs corresponding parameter by PC to PLC control system by serial port communicating protocol and controls; Importation transmits corresponding parameter by PLC control system to PC; Calculating section is then that the parameter value of foundation correlated inputs is to calculate rate of heat release, active combustion heat and ignition temperature etc.; The digital quantity of output is converted to analog output in mass flow controller 23 by analog to digital converter; The detected value received in paramagnetic type oxygen concentration sensor 32 is changed into digital output in Data acquisition and issuance module by analog to digital converter and signal transmitting amplifier.
During work, sample is placed in the sample cup on support bar 12, and moved in decomposition chamber 13 by sample presentation electricity cylinder 11, select corresponding heating mode and aerobic breakdown or anaerobic decomposition, sample is constantly decomposed, and the gas produced after decomposition is constantly burnt with the oxygen mix of pre-configured concentration in firing chamber 14, the change of oxygen concentration is detected by paramagnetic type oxygen concentration sensor 32, finally obtain the oxygen utilization of sample, and calculate the rate of heat release of sample, active combustion heat and the parameter such as ignition temperature thus.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. a miniature calorimeter, is characterized in that: comprise frame (1), frame (1) is provided with sample assembly, air inlet loop, exhausting loop and control system; Described sample assembly comprises sample presentation electricity cylinder (11), support bar (12), decomposition chamber (13) and firing chamber (14); Described air inlet loop comprises oxygen road, nitrogen road, air road, pressure regulator valve (21), solenoid valve (22) and mass flow controller (23); Firing chamber (14) is led to through pressure regulator valve (21), solenoid valve (22) and mass flow controller (23) in described oxygen road, and decomposition chamber (13) is led to through pressure regulator valve (21), solenoid valve (22) and mass flow controller (23) in nitrogen road and air road; Described firing chamber (14) is provided with exhausr port (31), the gas that exhausr port (31) is discharged arrives paramagnetic type oxygen concentration sensor (32) through mass flow controller (23) and forms exhausting loop; Described control system controls air inlet, sample presentation, exhaust and feedback and detects data.
2. miniature calorimeter according to claim 1, is characterized in that: described decomposition chamber (13) and firing chamber (14) are provided with heating furnace (15); Heating furnace (15) is divided into two sections, and one section corresponding with decomposition chamber (13), and one section corresponding with firing chamber (14); Described support bar (12), decomposition chamber (13), firing chamber (14) and two sections of heating furnaces (15) are provided with temperature sensor, and the temperature sensor on support bar (12) is positioned at the downside of sample cup; Described support bar (12) is arranged on sample presentation electricity cylinder (11) by soft contact sealing module (16).
3. miniature calorimeter according to claim 1, is characterized in that: described oxygen road, nitrogen road and air road are provided with oxygen intake (24), nitrogen inlet (25) and air intake (26) in the upper correspondence of frame (1) respectively; Described oxygen road enters firing chamber (14) by the second oxygen intake (27) on firing chamber (14).
4. miniature calorimeter according to claim 1, is characterized in that: the top of described frame (1) is provided with organizes louvre (2) more.
5. miniature calorimeter according to claim 1, it is characterized in that: described frame (1) is also provided with exsiccator (41), condenser (42) and radiator fan (43), wherein radiator fan (43) is arranged on the position corresponding with decomposition chamber (13) and firing chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217215.3A CN104897722A (en) | 2015-04-30 | 2015-04-30 | Miniature calorimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217215.3A CN104897722A (en) | 2015-04-30 | 2015-04-30 | Miniature calorimeter |
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| Publication Number | Publication Date |
|---|---|
| CN104897722A true CN104897722A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510217215.3A Pending CN104897722A (en) | 2015-04-30 | 2015-04-30 | Miniature calorimeter |
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| CN (1) | CN104897722A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442858A (en) * | 2016-10-26 | 2017-02-22 | 中国矿业大学 | Combustible fire spreading characteristic experiment method under conditions of different temperatures, humidity and oxygen concentrations |
| CN110530428A (en) * | 2019-09-12 | 2019-12-03 | 内蒙古工业大学 | A kind of controllable temperature gaseous contamination analyte detection integrated solid fixed bed |
| CN112834565A (en) * | 2020-12-31 | 2021-05-25 | 西南科技大学 | Miniature oxygen bomb for small calorimeter |
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| US20050008063A1 (en) * | 2003-07-10 | 2005-01-13 | Tiax Llc | Low thermal inerta scanning adiabatic calorimeter |
| US20090034580A1 (en) * | 2007-07-30 | 2009-02-05 | Lin Thomas S | Method for Measuring Heat Release of Polymeric Compounds |
| CN103534586A (en) * | 2011-05-17 | 2014-01-22 | 艾卡工厂有限及两合公司 | Combustion calorimeter with a decomposition vessel |
| CN204142664U (en) * | 2014-10-10 | 2015-02-04 | 天津达元吉科技有限公司 | A kind of miniature calorimeter |
| CN204694663U (en) * | 2015-04-30 | 2015-10-07 | 苏州菲尼克斯质检仪器有限公司 | A kind of miniature calorimeter |
-
2015
- 2015-04-30 CN CN201510217215.3A patent/CN104897722A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050008063A1 (en) * | 2003-07-10 | 2005-01-13 | Tiax Llc | Low thermal inerta scanning adiabatic calorimeter |
| US20090034580A1 (en) * | 2007-07-30 | 2009-02-05 | Lin Thomas S | Method for Measuring Heat Release of Polymeric Compounds |
| CN103534586A (en) * | 2011-05-17 | 2014-01-22 | 艾卡工厂有限及两合公司 | Combustion calorimeter with a decomposition vessel |
| CN204142664U (en) * | 2014-10-10 | 2015-02-04 | 天津达元吉科技有限公司 | A kind of miniature calorimeter |
| CN204694663U (en) * | 2015-04-30 | 2015-10-07 | 苏州菲尼克斯质检仪器有限公司 | A kind of miniature calorimeter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442858A (en) * | 2016-10-26 | 2017-02-22 | 中国矿业大学 | Combustible fire spreading characteristic experiment method under conditions of different temperatures, humidity and oxygen concentrations |
| CN106442858B (en) * | 2016-10-26 | 2018-09-04 | 中国矿业大学 | Combustible Spread Characteristics experimental method under the conditions of different humitures, oxygen concentration |
| CN110530428A (en) * | 2019-09-12 | 2019-12-03 | 内蒙古工业大学 | A kind of controllable temperature gaseous contamination analyte detection integrated solid fixed bed |
| CN110530428B (en) * | 2019-09-12 | 2024-02-27 | 内蒙古工业大学 | Controllable gas pollutant detects integration fixed bed |
| CN112834565A (en) * | 2020-12-31 | 2021-05-25 | 西南科技大学 | Miniature oxygen bomb for small calorimeter |
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Effective date of registration: 20170119 Address after: 215000 B07 building, Yongjia science and Technology Park, Quanzhou District, Jiangsu, Xuzhou, China, 1-101,, 102 Applicant after: Jiangsu Fellman Security Technology Co. Address before: Wuzhong District Mudu town Jinfeng Road, Suzhou city Jiangsu province 215000 No. 216 Building 2 East Technology Park building C room 312C Applicant before: Suzhou Phoenix quality inspection Instrument Ltd. |
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Application publication date: 20150909 |
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