CN215953507U - Sustained combustion test device - Google Patents
Sustained combustion test device Download PDFInfo
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- CN215953507U CN215953507U CN202120419579.0U CN202120419579U CN215953507U CN 215953507 U CN215953507 U CN 215953507U CN 202120419579 U CN202120419579 U CN 202120419579U CN 215953507 U CN215953507 U CN 215953507U
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- gas nozzle
- rotating shaft
- combustion test
- sustained combustion
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- 238000012360 testing method Methods 0.000 title claims abstract description 128
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 43
- 230000002459 sustained effect Effects 0.000 title claims abstract description 24
- 239000000523 sample Substances 0.000 claims description 48
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a sustained combustion test device, which relates to the technical field of combustion tests and comprises the following components: a test platform; the test sample groove is arranged on the test platform; the gas device comprises a gas nozzle and a rotating shaft, one end of the gas nozzle is connected with the rotating shaft, the rotating shaft is installed on the test platform, and the gas nozzle can rotate to the test sample groove along with the rotating shaft; the ignition device is arranged on one side of the test platform; and the limiting device is arranged on the test platform and used for stopping the rotation of the gas nozzle. Set up the stopper on test platform, fix a position gas device for the gas nozzle can backstop the appointed ignition position in experimental appearance inslot accurately, avoids causing the influence to the test result because of the ignition position.
Description
Technical Field
The utility model relates to the technical field of combustion tests, in particular to a continuous combustion test device.
Background
The sustained combustion test system can be used to determine whether a liquid can sustain combustion when heated and exposed to a flame under test conditions. The test process is as follows: a certain amount of sample is added to the sample tank, and the heating device is turned on. And after the temperature is constant to the set temperature required by the standard, igniting after constant for a certain time, finishing the ignition after the ignition lasts for the time required by the standard, observing whether the phenomenon of continuous combustion is generated between the heating process and the ignition completion, and recording the result.
Most continuous combustion systems adopt a single heating test sample tank, single heating and single control mode, and the mode has the defects that natural heating is adopted for single heating, and the natural heating cannot ensure stable stability and constant temperature in a short time; partial single control is only control over a temperature rising mode, intelligent control over ignition cannot be achieved, a manual mode can only be adopted when the rotating flame is in an ignition state, the ignition position cannot be achieved, and the test result is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the utility model provides a continuous combustion test device, which solves the problem that a gas nozzle cannot be accurately positioned.
The sustained combustion test apparatus according to an embodiment of the present invention includes: a test platform; the test sample groove is arranged on the test platform; the gas device comprises a gas nozzle and a rotating shaft, one end of the gas nozzle is connected with the rotating shaft, the rotating shaft is installed on the test platform, and the gas nozzle can rotate to the test sample groove along with the rotating shaft; the ignition device is arranged on one side of the test platform; and the limiting device is arranged on the test platform and used for stopping the rotation of the gas nozzle.
According to some embodiments of the utility model, the limiting device comprises limiting blocks, the gas device further comprises a positioning rod, the positioning rod is connected to the rotating shaft of the gas nozzle, and the two limiting blocks are respectively arranged on two sides of the positioning rod.
According to some embodiments of the utility model, the gas nozzle is made of stainless steel tubing.
According to some embodiments of the utility model, the stainless steel tube has an inner diameter of 3.5 mm.
According to some embodiments of the utility model, the gas nozzle front end is provided with a flame probe for detecting a length of a flame.
According to some embodiments of the utility model, the continuous combustion testing device is further provided with an electronic time control module.
According to some embodiments of the utility model, the sustained combustion test apparatus is further provided with a pressure reducing valve for regulating the gas flow in the gas nozzle.
According to some embodiments of the utility model, there are two test sample wells, and two test sample wells are disposed on the test platform.
According to some embodiments of the utility model, the ignition device is an electronic igniter.
According to some embodiments of the utility model, the sustained combustion test apparatus further comprises a temperature sensor for detecting a temperature of the sample in the test well.
Based on the technical scheme, the embodiment of the utility model at least has the following beneficial effects: set up the stopper on test platform, fix a position gas device for the gas nozzle can backstop the appointed ignition position in experimental appearance inslot accurately, avoids causing the influence to the test result because of the ignition position.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic structural diagram of a sustained combustion test apparatus according to an embodiment of the present invention.
Reference numerals: the test platform 10, the test area 11, the test sample groove 111, the gas nozzle 121, the rotating shaft 122, the positioning rod 123 and the limiting device 124.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, the sustained combustion test apparatus of the present invention includes: the test platform 10, the test sample groove 111, the gas device, the ignition device and the limiting device 124.
Specifically, the test sample tank 111 is disposed on the test platform 10; the gas device comprises a gas nozzle 121 and a rotating shaft 122, one end of the gas nozzle 121 is connected with the rotating shaft 122, the rotating shaft 122 is installed on the test platform 10, and the gas nozzle 121 can rotate to the test sample groove 111 along with the rotating shaft 122; the ignition device is arranged on one side of the test platform 10; and a limiting device 124 is mounted on the test platform 10 and used for stopping the rotation of the gas nozzle 121. Set up the stopper on test platform 10, fix a position gas device for gas nozzle 121 can stop the appointed ignition position in experimental appearance groove 111 accurately, avoids causing the influence to the test result because of the ignition position.
When the continuous combustion test device is used, the test sample groove 111 is heated to a set temperature, if the test sample does not generate continuous combustion or continuous flash, the ignition device is used for igniting the gas nozzle 121 in the area outside the test area 11, then the rotating shaft 122 of the gas device is rotated, the gas nozzle 121 is rotated to the specified ignition position in the test sample groove 111 and the ignition time required by the standard is kept, and then the rotating shaft 122 is rotated to move the gas nozzle 121 to the area outside the test sample groove 111, and the test condition of the test sample is observed at the same time.
The continuous combustion test device provided by the embodiment of the utility model further comprises a control system, wherein the control system comprises a PLC touch screen, manual interaction and equipment control are organically combined, various parameters of the continuous combustion test device can be more effectively and uniformly acquired and controlled, manual intervention is greatly reduced, and test results are better and more accurate to reproduce. The state digital display screen of the control system can also display the working state of the continuous combustion test device and the current test steps of the device.
In some possible embodiments, the limiting device 124 includes limiting blocks, the gas device further includes a positioning rod 123, the positioning rod 123 is connected to the rotating shaft 122 of the gas nozzle 121, and the two limiting blocks are respectively disposed on two sides of the positioning rod 123. Two limiting blocks are respectively arranged on two sides of the positioning rod 123, so that accurate positioning of the gas nozzle 121 on the ignition device and accurate positioning of the ignition position of the gas nozzle 121 in the test sample groove 111 are respectively realized. When the gas nozzle 121 is rotated from the outside of the test sample groove 111 to the specified ignition position in the test sample groove 111, the positioning rod abuts against the positioning block, and the positioning block smoothly stops the gas nozzle 121 at the specified ignition position in the test sample groove 11.
It can be understood that the testing platform 10 is provided with a plurality of evenly distributed positioning holes for adjusting the position of the limiting block on the testing platform 10, so that the ignition position of the gas nozzle 121 in the ignition device and the ignition position in the test sample groove 111 can be conveniently adjusted, and the practicability of the continuous gas testing device is improved.
In the above embodiment, when the gas nozzle 121 rotates to the ignition position of the test sample groove 111, the limiting device 124 accurately positions the positioning rod 123, so that the ignition position of the gas nozzle 121 in the test sample groove 111 is fixed every time, the situation that different test results are generated due to different ignition positions in different tests is avoided, and the deviation of the test results and the conclusion is further reduced.
In some possible embodiments, the gas nozzle 121 is made of stainless steel tubing. The stainless steel pipe is selected as the gas nozzle 121, so that the condition that the gas nozzle 121 deforms due to temperature rise in the ignition heating process is avoided, and the accuracy of the gas nozzle 121 at the ignition position is ensured.
In some possible embodiments, the stainless steel tube has an inner diameter of 3.5 mm. Because the length and the width of the flame need to be strictly controlled in the test, the inner diameter of the stainless steel tube is selected to be 3.5mm, the length and the width of the flame are convenient to control, and the accuracy of the test result is ensured.
In some possible embodiments, the continuous combustion test apparatus is further provided with a pressure reducing valve for controlling the gas flow in the gas nozzle 121. The gas device further comprises a small gas cylinder connected to the gas nozzle 121 through a pipe, and a pressure reducing valve is installed on the gas cylinder. A rotary fine adjustment type pressure reducing valve is installed in the small gas cylinder, and the size of the gas flow of the gas nozzle 121 is adjusted by the rotary fine adjustment type pressure reducing valve.
As a modification of the above embodiment, a flame probe is provided at the front end of the gas nozzle 121 for detecting the length of the flame. When the flame length covers the flame probe, the control system detects a signal fed back by the probe, and then confirms that the flame length meets the length requirement set by the system. It should be noted that the length of the flame probe is adjustable to meet the detection of different flame lengths.
In some possible embodiments, the continuous combustion testing device is further provided with an electronic time control module. When the metering time is inaccurate, the control system can revise the metering time through the electronic time control module.
Two test sample wells 111 are provided on the test platform 10. When performing a sustained combustion test, in some possible embodiments, a further verification test of whether sustained combustion at 75.0 ℃ is performed for the case of non-sustained combustion at 60.5 ℃ is required. When such a test is performed using the conventional single test sample tank 111, a long test time is required. The sustained combustion test device provided by the embodiment of the utility model adopts the double test sample grooves 111, and when a single sample test is carried out, the temperatures of the two test sample grooves 111 are set to be two different temperatures, for example, the temperatures of the two test sample grooves 111 are respectively set to be 60.5 ℃ and 75.0 ℃, so that the test time is favorably shortened, and the test efficiency is improved. When a multi-sample test is carried out, the double test sample groove 111 can simultaneously carry out the continuous combustion test of two samples, and the test efficiency is favorably improved.
In some possible embodiments, the ignition device is an electronic igniter. The gas nozzle 121 is rotated to an ignition position, and then the electronic igniter is controlled by the control system to ignite the gas nozzle 121.
In some possible embodiments, the sustained combustion test apparatus further comprises a temperature sensor for detecting the temperature of the sample in the test sample tank 111. The temperature sensor is utilized to detect the temperature of the sample, and the temperature of the test sample groove 11 can be accurately monitored.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A sustained combustion test apparatus, comprising:
a test platform;
the test sample groove is arranged on the test platform;
the gas device comprises a gas nozzle and a rotating shaft, one end of the gas nozzle is connected with the rotating shaft, the rotating shaft is installed on the test platform, and the gas nozzle can rotate to the test sample groove along with the rotating shaft;
the ignition device is arranged on one side of the test platform; and
and the limiting device is arranged on the test platform and used for stopping the rotation of the gas nozzle.
2. The sustained combustion test apparatus of claim 1, wherein: the limiting device comprises limiting blocks, the gas device further comprises a positioning rod, the positioning rod is connected to the rotating shaft of the gas nozzle, and the limiting blocks are arranged on two sides of the positioning rod respectively.
3. The sustained combustion test apparatus of claim 1, wherein: the gas nozzle is made of a stainless steel pipe.
4. The sustained combustion test apparatus of claim 3, wherein: the inner diameter of the stainless steel pipe is 3.5 mm.
5. The sustained combustion test apparatus of claim 4, wherein: the front end of the gas nozzle is provided with a flame probe for detecting the length of flame.
6. The sustained combustion test apparatus of claim 1, wherein: the continuous combustion test device is also provided with an electronic time control module.
7. The sustained combustion test apparatus according to any one of claims 1 to 6, wherein: the continuous combustion test device is also provided with a pressure reducing valve for adjusting gas flow in the gas nozzle.
8. The sustained combustion test apparatus of claim 7, wherein: the test sample groove has two, two the test sample groove set up in on the test platform.
9. The sustained combustion test apparatus of claim 1, wherein: the ignition device is an electronic igniter.
10. The sustained combustion test apparatus of claim 1, wherein: the continuous combustion test device also comprises a temperature sensor for detecting the temperature of the sample in the test sample groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419579.0U CN215953507U (en) | 2021-02-25 | 2021-02-25 | Sustained combustion test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419579.0U CN215953507U (en) | 2021-02-25 | 2021-02-25 | Sustained combustion test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215953507U true CN215953507U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120419579.0U Active CN215953507U (en) | 2021-02-25 | 2021-02-25 | Sustained combustion test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215953507U (en) |
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2021
- 2021-02-25 CN CN202120419579.0U patent/CN215953507U/en active Active
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