CN219830988U - Combustion test box - Google Patents
Combustion test box Download PDFInfo
- Publication number
- CN219830988U CN219830988U CN202321279029.9U CN202321279029U CN219830988U CN 219830988 U CN219830988 U CN 219830988U CN 202321279029 U CN202321279029 U CN 202321279029U CN 219830988 U CN219830988 U CN 219830988U
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- Prior art keywords
- housing
- ignition
- combustion test
- test chamber
- ignition device
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 53
- 239000000126 substance Substances 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
A combustion test chamber comprising a housing; an ignition device located inside the housing; a movement device connected to the ignition device, the movement device being capable of moving the ignition device to and from an ignition position inside the housing; a sample holder above the ignition device; and a ventilation part installed in the housing, the combustion test chamber further including a detection alarm device and a timer device, the detection alarm device being installed in the housing and configured to detect a concentration of harmful substances inside the housing and to drive the ventilation part to discharge the harmful substances when the concentration exceeds a threshold value. The timing device is mounted in the housing and is configured to be operable from outside the housing to control an ignition timing of the ignition device and to initiate a countdown of the ignition timing at the start of the combustion test.
Description
Technical Field
The utility model belongs to the field of aircraft cabin interior trim materials, and particularly relates to a combustion test box.
Background
The combustion test is a basic test for verifying the flame retardant property of the cabin interior material, and has great significance for guaranteeing the safe flight of the cabin.
The test procedure for the burn test is as follows: 1. loading a combustion test sample into a sample holder of a combustion test box, igniting a Bunsen burner, and adjusting the flame of the Bunsen burner to the height and the temperature expected by the test; 2. moving the bunsen burner into a test position (typically directly under the sample), igniting the sample and starting the timing of the ignition time using a stopwatch; 3. when the tester observes that the ignition time is up, the bunsen burner is moved away from the sample, and data such as the burning length and the like are recorded after the test is finished.
At present, testers only observe and judge the discharge condition of harmful smoke dust and gas in the box by naked eyes; the ignition time of the test is recorded by a stopwatch or other timing device, and the bunsen burner is manually moved into or out of the ignition position.
The following problems are mainly caused in the test process:
1. the test produces a lot of smoke and the tester discharges the smoke by opening the exhaust device of the combustion test box. In the smoke dust removal process, whether the content of smoke dust and harmful gas in the combustion test box is reduced to a safe level cannot be judged by naked eyes. If the removal time is too short, the smoke dust can be removed uncleanly, and at the moment, a tester opens the combustion test box to suck a large amount of harmful substances, and a harmful substance concentration detection device is required to be added into the test box;
2. during the test, a tester uses a stopwatch or other time recording devices to record the ignition time, the bunsen lamp is synchronously and manually moved under the sample when the stopwatch starts to watch the time on the stopwatch, and then the bunsen lamp is manually moved away from the sample, and during the process, the tester needs a certain reaction time, which may cause inaccurate ignition time.
Disclosure of Invention
In order to solve the problems that ignition time is inaccurate and high-concentration harmful substances cannot be judged in the combustion test process, the utility model designs the combustion test box, and a detection alarm device and a timing device are added on the basis of the original combustion test box, so that an operator is prevented from opening the combustion test box when the content of the harmful substances in the combustion test box is too high, and the ignition time can be more accurate.
Specifically, such a combustion test chamber includes a housing; the ignition device is positioned in the shell; a movement device configured to be coupled to the ignition device and capable of moving the ignition device to and from an ignition position within the interior of the housing; a sample clamp, the sample clamp being above the ignition device; and a ventilation part installed in the housing. The combustion test chamber further comprises: a detection alarm device installed in the housing and configured to detect a concentration of harmful substances inside the housing and to drive the ventilation part to discharge the harmful substances when the concentration exceeds a threshold value, and a timing device installed in the housing and configured to be operable from outside the housing to control an ignition timing of the ignition device and to start a countdown of the ignition timing at a start of a combustion test.
Preferably, the combustion test chamber further comprises a gas control system mounted in the housing and configured to be operable from outside the housing.
In the present embodiment, the ignition device is a bunsen burner to obtain higher combustion efficiency.
In one example, the movement means comprises a pull rod, one end of the pull rod being connected to the ignition means and the other end of the pull rod extending out of the housing.
Advantageously, the ignition device slides on a sliding rail arranged across the interior of the housing.
In one example, the timing device is a digital time relay.
In a preferred embodiment, the timing device is electrically connected to a first solenoid valve mounted on the ignition device and a second solenoid valve arranged inside the housing such that the first solenoid valve is connected to the second solenoid valve when the ignition device is moved to the ignition position.
In this embodiment, the vent is a blower located at the top of the housing of the combustion test chamber and configured to be activated by the detection alarm device.
Additional features and advantages of the described combustion test chambers will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, as well as the appended drawings.
Drawings
Technical features of the present utility model are clearly described in the following claims with reference to the above objects, and advantages thereof are apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of the present utility model by way of example, without limiting the scope of the inventive concept.
FIG. 1 shows a schematic view of a combustion test chamber according to one embodiment of the utility model.
Reference numerals
10 shell body
20 ignition device
30 gas control system
40 movement device
41 pull rod
42 sliding rail
50 sample clamp
60 ventilation part
70 detection alarm device
80 timing device
81 first electromagnetic valve
82 second solenoid valve
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are not intended to be limiting.
Note that the azimuthal terms "upper", "lower", "left", "right", "front", "top", etc. as used herein are described in accordance with the drawings of the present utility model.
Fig. 1 shows a schematic view of a combustion test chamber according to an embodiment of the utility model, the combustion test chamber comprising a housing 10, which housing 10 is alternatively rectangular or may be of other shape. Generally, a test box door is arranged at the front side of the shell 10, a transparent glass window is arranged at the test box door, and the test process can be observed through the glass window;
an ignition device 20 is provided inside the housing 10. In this embodiment, the ignition device 20 is preferably a bunsen burner to obtain a high combustion efficiency.
The combustion test chamber further includes a gas control system 30, the gas control system 30 being mounted in the housing 10 and configured to be operable from outside the housing 10 to adjust the gas flow within the ignition device 20 during testing to adjust the height and temperature of the flame of the ignition device 20.
During non-test periods, the ignition device 20 should be positioned away from under the test specimen (not shown) and the ignition device 20 should be moved under the test specimen during test ignition. Thus, the ignition device 20 needs to be movable. To this end, the ignition device 20 is connected to a movement device 40, which movement device 40 is configured to support the ignition device 20 and is capable of moving inside the housing 10 to move the ignition device 20 to the ignition position when a test is performed and to move the ignition device 20 from the ignition position when the test is ended.
In the present embodiment, the movement means 40 includes a pull rod 41, one end of the pull rod 41 is connected to the ignition means 20, and the other end of the pull rod extends out of the housing 10, so that the operator can move the ignition means 20 into or out of the ignition position (under the sample) by moving the pull rod 41 outside the housing 10. Preferably, the ignition device 20 slides on a sliding rail 42 disposed across the inside of the housing, the ignition device 20 being slidable along the sliding rail 42 under pushing or pulling of the pull rod 41. In the illustrated embodiment, the slide rail 42 is horizontal such that the ignition device 20 slides horizontally along the slide rail 42.
Referring to the drawings, the combustion test chamber further includes a specimen grip 50 fixed to the inside of the housing 10 for gripping a specimen (not shown), the specimen grip 50 being above the ignition device 20, specifically, a specimen gripping portion (not shown) of the specimen grip 50 being located directly above the ignition device 20 when the ignition device 20 is moved to the ignition position.
It should be understood that the configuration of the ignition device 20, the movement device 40, and the sample holder 50 in this embodiment is merely exemplary and not limiting, and in other embodiments the ignition device may be fixed within the housing interior and the sample holder may be moved over the ignition device by the movement device to perform a combustion test. In a further embodiment, both the ignition device and the sample holder can be moved by means of a movement device to a suitable position.
Furthermore, in other embodiments, the ignition device or sample holder may not only move in a horizontal direction, but may alternatively be movable in a vertical or other direction.
As shown. The ventilation part 60 is installed in the housing 10. In the present embodiment, the ventilation part 60 is a blower that is located at the top of the housing 10 and may be activated to discharge harmful substances within the housing 10 when the concentration of the harmful substances is too high.
In this embodiment, the combustion test chamber further includes a detection alarm device 70, the detection alarm device 70 is installed in the housing 10, wherein a detection portion for detecting harmful substances is located inside the housing 10, and a device switch and a display screen side extend to the outside of the combustion test chamber. During testing, the switch of the detection alarm device 70 located outside the housing 10 of the combustion test chamber is turned off. After the test is completed, the operator can turn on the switch of the alarm device to make the detection alarm device 70 detect the concentration of harmful substances in the housing 10 of the combustion test chamber, and drive the ventilation part 60 to discharge the harmful substances when the concentration exceeds the threshold value, and at the same time, the operator can be warned by a signal such as a display screen to prevent the opening of the test chamber door of the combustion test chamber.
Further, the combustion test chamber further includes a timing device 80 for controlling the ignition timing, the timing device 80 being installed in the housing 10 and configured to be operable from outside the housing 10 to control the ignition timing of the ignition device 20. In this embodiment, the timer 80 is a digital time relay on which the operator may first set the ignition time prior to testing. Simultaneously with the start of the combustion test, the timing device 80 synchronously and automatically starts the ignition timing countdown. This countdown allows the ignition timing to be more accurate than a stopwatch or other time recording device.
In this embodiment, the combustion test is started, i.e., the ignition timing countdown of the timing device 80 is started by moving the ignition device 20 to the ignition position. Specifically, the timing device 80 is electrically connected to the first solenoid valve 81 and the second solenoid valve 82 through wires, so that the timing device 80 can control the first solenoid valve 81 and the second solenoid valve 82. The first solenoid valve 81 is mounted on the ignition device 20, and the second solenoid valve 82 is disposed inside the housing 10 such that the first solenoid valve 81 is connected to the second solenoid valve 82 when the ignition device 20 is moved to an ignition position below the sample. At this time, the timer 80 synchronizes the auto-start ignition countdown. Immediately after the end of the countdown, the timer device 80 controls the first solenoid valve 81 and the second solenoid valve 82 to be turned off, and the operator moves the ignition device 20 to a position away from the sample, and the ignition is ended.
It should be appreciated that the initiation of the ignition timing countdown by the change in position of the present embodiment is by way of example only and not limitation, and that in other embodiments the ignition timing countdown of the timing device 80 may be accomplished by other means, such as by initiating a countdown upon detecting the temperature within the combustion test chamber exceeding a threshold, etc.
Compared with the original combustion test box, the utility model has the following improvement points:
1) The harmful substance detection warning device is added on the original basis of the combustion test box, so that a tester is prevented from opening the test box when the content of harmful substances in the test box is too high;
2) The ignition device is controlled to ignite by the electromagnetic valve connected with the timing device through a circuit, the ignition time can be set on the digital display time relay, when the ignition device is pushed into the ignition position, the timing device automatically starts the ignition timing, the ignition time is up, the timing is finished, the electromagnetic relay automatically controls the connected electromagnetic valve to be disconnected, and the ignition device is moved away from the ignition position.
While the structure and method of installation of the present utility model have been described in connection with preferred embodiments, those of ordinary skill in the art will recognize that the above examples are for illustrative purposes only and are not intended to be limiting. Accordingly, the present utility model is susceptible to modification and variation, which are all intended to fall within the scope of the present utility model as defined in the appended claims.
Claims (8)
1. A combustion test chamber comprising:
a housing;
an ignition device located inside the housing;
a movement device configured to be connected to an ignition device and capable of moving the ignition device to and from an ignition position inside the housing;
a sample holder, the sample holder being above the ignition device; and
a ventilation part installed in the housing,
the combustion test box is characterized by further comprising:
a detection alarm device installed in the housing and configured to detect a concentration of a harmful substance inside the housing and to drive the ventilation part to discharge the harmful substance when the concentration exceeds a threshold value, and
a timer device mounted in the housing and configured to be operable from outside the housing to control an ignition timing of the ignition device and to initiate a countdown of the ignition timing at the start of a combustion test.
2. A combustion test chamber according to claim 1, wherein,
also included is a gas control system mounted in the housing and configured to be operable from outside the housing.
3. A combustion test chamber according to claim 1, wherein,
the ignition device is a bunsen burner.
4. A combustion test chamber according to claim 1, wherein,
the motion device comprises a pull rod, one end of the pull rod is connected with the ignition device, and the other end of the pull rod extends out of the shell.
5. The combustion test chamber according to claim 4,
the ignition device slides on a sliding rail that is disposed across the interior of the housing.
6. A combustion test chamber according to claim 1, wherein,
the timing device is a digital display time relay.
7. A combustion test chamber according to claim 1, wherein,
the timing device is electrically connected to a first solenoid valve mounted on the ignition device and a second solenoid valve disposed inside the housing such that when the ignition device is moved to the ignition position, the first solenoid valve is connected to the second solenoid valve to initiate countdown of the timing device.
8. A combustion test chamber according to claim 1, wherein,
the ventilation portion is a fan located at the top of the housing of the combustion test chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321279029.9U CN219830988U (en) | 2023-05-24 | 2023-05-24 | Combustion test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321279029.9U CN219830988U (en) | 2023-05-24 | 2023-05-24 | Combustion test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219830988U true CN219830988U (en) | 2023-10-13 |
Family
ID=88276039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321279029.9U Active CN219830988U (en) | 2023-05-24 | 2023-05-24 | Combustion test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219830988U (en) |
-
2023
- 2023-05-24 CN CN202321279029.9U patent/CN219830988U/en active Active
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