CN112345685A - Standard test device for material surface combustion characteristics - Google Patents
Standard test device for material surface combustion characteristics Download PDFInfo
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- CN112345685A CN112345685A CN202011220590.0A CN202011220590A CN112345685A CN 112345685 A CN112345685 A CN 112345685A CN 202011220590 A CN202011220590 A CN 202011220590A CN 112345685 A CN112345685 A CN 112345685A
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- fixedly arranged
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- top cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Abstract
The invention belongs to the technical field of combustion characteristic test devices, and particularly relates to a standard test device for material surface combustion characteristics, which comprises a combustion test box, wherein an exhaust port is formed in the right side wall of the combustion test box, a detachable top cover is transversely arranged at the upper end of the combustion test box, a wind pressure meter connecting point is fixedly arranged at the left end of the detachable top cover, an anemometer interface is fixedly arranged at the right end of the detachable top cover, two embedded thermocouples are fixedly arranged in the combustion test box, a naked thermocouple is fixedly arranged at the lower end of the combustion test box, a furnace wall is fixedly arranged on the inner wall of the combustion test box, and a metal mesh is fixedly arranged at the lower end of the detachable top cover, so that combustion detection can be conveniently and efficiently carried out on different materials, and the accuracy of a detection result is.
Description
Technical Field
The invention relates to the technical field of combustion characteristic test devices, in particular to a standard test device for the combustion characteristic of a material surface.
Background
Different materials have different combustion performances, and sometimes the use of the materials is determined according to the combustion performances of the materials in buildings or life, so that a standard test device for the combustion characteristics of the surfaces of the materials is needed to test the combustion performances of the surfaces of the materials.
Disclosure of Invention
The invention aims to provide a standard test device for the combustion characteristics of the surface of a material, which aims to solve the problem that the existing test device proposed in the background technology is relatively lagged behind and can not accurately test the combustion characteristics of different types of materials.
In order to achieve the purpose, the invention provides the following technical scheme: a standard test device for material surface combustion characteristics comprises a combustion test box, wherein an exhaust port is formed in the right side wall of the combustion test box, a detachable top cover is transversely arranged at the upper end of the combustion test box, a wind pressure meter connecting point is fixedly arranged at the left end of the detachable top cover, an anemometer interface is fixedly arranged at the right end of the detachable top cover, two embedded thermocouples are fixedly arranged in the combustion test box, a bare thermocouple is fixedly arranged at the lower end of the combustion test box, a furnace wall is fixedly arranged on the inner wall of the combustion test box, a metal net is fixedly arranged at the lower end of the detachable top cover, a mineral fiber cement plate is transversely arranged at the lower end of the metal net, glass fiber adhesive tapes are fixedly arranged at two ends of the mineral fiber cement plate, a double-layer observation window is fixedly arranged on the right side wall of the, and a liquid seal is fixedly arranged on the left side wall of the combustion test box.
Preferably, the upper side wall of the detachable top cover is coated with a mineral composite material, and the lower side wall of the detachable top cover is coated with a cast insulating material.
Preferably, the thickness of the glass fiber adhesive tape is 3.2mm, and the thickness of the mineral limiting cement plate is 6.4 mm.
Preferably, the lower side wall of the combustion test box is fixedly provided with uniformly arranged support frames.
Preferably, the left end of the combustion test box is fixedly provided with an air inlet shutter.
Compared with the prior art, the invention has the beneficial effects that:
through combustion test case, gas vent, can dismantle top cap, wind pressure meter tie point, exposed thermocouple, oven, mineral fiber cement board, glass fibre sticky tape, double-deck observation window and the common cooperation of liquid seal, the high efficiency carries out the burning to different kinds of materials of being convenient for and detects, and improves the accuracy of testing result greatly.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a graph of time versus temperature during the test;
FIG. 4 is a typical time-distance burn graph of red oak wood in the test;
FIG. 5 is a typical time-temperature graph of red oak wood in the experiment;
FIG. 6 is a graph of typical time-smoke density of red oak wood in an experiment;
FIG. 7 is a graph of time versus temperature for a fiber cement board under test;
FIG. 8 is a graph of flame propagation time versus distance in an experiment;
FIG. 9 is a diagram of a luminometer catheter system;
fig. 10 is a schematic view of the structure of the elbow portion of the conduit.
In the figure: 1 combustion test case, 2 gas vents, 3 detachable top covers, 4 wind pressure meter connection points, 5 anemometer interfaces, 6 exposed thermocouples, 7 furnace walls, 8 metal meshes, 9 mineral fiber cement boards, 10 glass fiber adhesive tapes, 11 double-layer observation windows, 12 liquid seals and 13 air inlet shutters.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a standard test device for material surface combustion characteristics comprises a combustion test box 1, wherein an exhaust port 2 is formed in the right side wall of the combustion test box 1, a detachable top cover 3 is transversely arranged at the upper end of the combustion test box 1, a wind pressure meter connecting point 4 is fixedly arranged at the left end of the detachable top cover 3, an anemometer interface 5 is fixedly arranged at the right end of the detachable top cover 3, two embedded thermocouples 5 are fixedly arranged in the combustion test box 1, a bare thermocouple 6 is fixedly arranged at the lower end of the combustion test box 1, a furnace wall 7 is fixedly arranged on the inner wall of the combustion test box 1, a metal mesh 8 is fixedly arranged at the lower end of the detachable top cover 3, a mineral fiber cement plate 9 is transversely arranged at the lower end of the metal mesh 8, glass fiber adhesive tapes 10 are fixedly arranged at two ends of the mineral fiber cement plate 9, a double-layer observation window, a liquid seal 12 is fixedly arranged on the left side wall of the combustion test box 1;
the upper side wall of the detachable top cover 3 is coated with a mineral composite material, and the lower side wall of the detachable top cover 3 is coated with a casting insulating material;
the thickness of the glass fiber adhesive tape 10 is 3.2mm, and the thickness of the mineral limiting cement board 9 is 6.4 mm;
the lower side wall of the combustion test box 1 is fixedly provided with uniformly distributed support frames;
an air inlet shutter 13 is fixedly arranged at the left end of the combustion test box 1.
Example (b):
step one, during operation and combustion, placing a sample on a wall frame of a laboratory, wherein the wall frame is completely covered by a woven liner adhesive tape with the width of 38mm and the thickness of 3.2mm, and after the sample is properly placed, placing a sample cover plate at the position of the sample;
step two, before the test ignition, placing the completely installed sample in the combustion chamber, and running for (120+15 or 120-15) s on the furnace tail;
igniting the gas of the burner, observing and recording the distance and the time which can reach the travel of the flame at most in a dark room, continuously testing for 10min, and if the sample is completely burnt out in a fire zone and does not undergo further gradual combustion and the reading of the photoelectric cell returns to a base line, allowing the test to be terminated before 10 minn;
recording the output value of the photoelectric cell in the test, and recording data at least once every 2 s;
recording gas pressure, pressure difference on the pore plate and gas quantity used in the internal test, and only recording the volume of the gas if the gas flow is monitored by adopting the temperature and pressure compensation type mass flowmeter;
step six, when the test is finished, closing the gas supply, observing smoldering and other conditions in the test pipeline, and taking out the sample for further inspection;
and step seven, drawing a change curve of the flame propagation distance, the temperature and the photoelectric cell reading for determining the summarized flame spread and smoke growth index, wherein the flame front advancing should be recorded in time, if the flame advancing is not obvious, the flame front advancing is recorded at least once every 30s, and the flame propagation distance is determined as the observation distance minus 1.37 m.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The standard test device for the material surface combustion characteristic comprises a combustion test box (1) and is characterized in that an exhaust port (2) is formed in the right side wall of the combustion test box (1), a detachable top cover (3) is transversely arranged at the upper end of the combustion test box (1), a wind pressure meter connecting point (4) is fixedly arranged at the left end of the detachable top cover (3), an anemometer interface (5) is fixedly arranged at the right end of the detachable top cover (3), two embedded thermocouples (5) are fixedly arranged in the combustion test box (1), a bare thermocouple (6) is fixedly arranged at the lower end of the combustion test box (1), a furnace wall (7) is fixedly arranged on the inner wall of the combustion test box (1), a metal net (8) is fixedly arranged at the lower end of the detachable top cover (3), and a mineral fiber cement plate (9) is transversely arranged at the lower end of the metal net (8), the glass fiber adhesive tape (10) is fixedly arranged at two ends of the mineral fiber cement board (9), the double-layer observation window (11) is fixedly arranged on the right side wall of the combustion test box (1), and the liquid seal (12) is fixedly arranged on the left side wall of the combustion test box (1).
2. A standard test apparatus for the surface combustion properties of materials as claimed in claim 1, wherein: the upper side wall of the detachable top cover (3) is coated with a mineral composite material, and the lower side wall of the detachable top cover (3) is coated with a casting insulating material.
3. A standard test apparatus for the surface combustion properties of materials as claimed in claim 1, wherein: the thickness of the glass fiber adhesive tape (10) is 3.2mm, and the thickness of the mineral limiting cement board (9) is 6.4 mm.
4. A standard test apparatus for the surface combustion properties of materials as claimed in claim 1, wherein: and the lower side wall of the combustion test box (1) is fixedly provided with uniformly distributed support frames.
5. A standard test apparatus for the surface combustion properties of materials as claimed in claim 1, wherein: and an air inlet shutter (13) is fixedly arranged at the left end of the combustion test box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220590.0A CN112345685A (en) | 2020-11-05 | 2020-11-05 | Standard test device for material surface combustion characteristics |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011220590.0A CN112345685A (en) | 2020-11-05 | 2020-11-05 | Standard test device for material surface combustion characteristics |
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| CN112345685A true CN112345685A (en) | 2021-02-09 |
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| CN202011220590.0A Pending CN112345685A (en) | 2020-11-05 | 2020-11-05 | Standard test device for material surface combustion characteristics |
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Application publication date: 20210209 |
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