CN220305248U

CN220305248U - Combustion testing device

Info

Publication number: CN220305248U
Application number: CN202320846587.2U
Authority: CN
Inventors: 刘瑶; 饶湘; 庞承焕; 吴博; 李卫领; 李建军; 陈平绪; 叶南飚; 宁红涛
Original assignee: Guogao High Polymer Material Industry Innovation Center Co Ltd
Current assignee: Guogao High Polymer Material Industry Innovation Center Co Ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2024-01-05
Anticipated expiration: 2033-04-17

Abstract

The utility model relates to the technical field of combustion test equipment, and discloses a combustion test device which comprises a first flame sensor, a second flame sensor, a third flame sensor, a fourth flame sensor, a timer and a controller. Based on the structure, when the sample starts to burn and passes through the lower parts of the first flame sensor and the second flame sensor, the flame spreading speed is calculated through the timer, and the controller controls the first moving assembly to drive the second clamping assembly to move towards the first clamping assembly at the flame spreading speed, so that the moving speed of the second clamping assembly is matched with the flame spreading condition, the horizontal state of the unburned part of the sample can be maintained, the burning part of the sample can be prevented from directly spreading onto the second clamping assembly, the burning state of the sample is prevented from being influenced or the service life of the second clamping assembly is prolonged, and the accuracy of the burning test is improved.

Description

Combustion testing device

Technical Field

The utility model relates to the technical field of combustion test equipment, in particular to a combustion test device.

Background

The horizontal combustion test is a test method for testing the linear horizontal combustion speed of a sample by horizontally arranging the front surface of the sample with a specified size on a horizontal axis and arranging the side surface at an angle of 45 degrees, then applying flame for a certain time, and recording the effective distance and time of combustion. During the test, the sample support state, the ignition time and the burning distance have a great influence on the test result.

In the sample materials for combustion test, there are some materials with smaller rigidity such as plastics and cannot be self-supported, and some materials which are difficult to be clamped horizontally due to natural curling, so that a movable auxiliary clamping frame is required to carry out auxiliary support, and the conventional non-movable clamping frame can cause flame to burn to the clamping frame on one hand, influence the service life of the clamping frame, and on the other hand, influence the combustion state of the sample, for example, the combustion speed or the combustion state of the combustion part can change after the combustion part contacts with the clamping frame.

The existing combustion testing device generally ensures that the combustion state of the sample is not affected through the manual transverse movement clamping frame, but the manual transverse movement clamping frame is too fast to cause that the sample cannot maintain the horizontal state, and too slow movement is caused by contact with flame to affect the combustion state of the sample, so that the accuracy of the combustion test is reduced.

Disclosure of Invention

The utility model aims to provide a combustion testing device with high testing accuracy.

In order to achieve the above object, the present utility model provides a combustion test apparatus comprising:

a box body, which is provided with a test cavity;

the support frame is arranged in the test cavity;

the first clamping assembly is arranged on the supporting frame and used for clamping the fixed end of the sample;

the first moving mechanism is arranged in the test cavity, and comprises a first moving assembly and a scale, wherein the first moving assembly is configured to move along a first direction, and the scale is arranged below the moving assembly and extends along the first direction;

the second clamping assembly is arranged on the first moving assembly and can move along with the first moving assembly and is used for clamping the position of the sample close to the free end;

the first flame sensor, the second flame sensor, the third flame sensor and the fourth flame sensor are movably arranged in the test cavity and are sequentially arranged along the first direction;

the timer, the first moving assembly, the first flame sensor, the second flame sensor, the third flame sensor and the fourth flame sensor are all electrically connected with the controller.

In some embodiments of the present application, further comprising a mounting portion disposed within the test chamber configured to be slidable in a vertical direction and a first direction;

the first flame sensor, the second flame sensor, the third flame sensor, and the fourth flame sensor are mounted on the mounting portion.

In some embodiments of the present application, the mounting portion is provided with a guide portion extending along the first direction, and one end of the third flame sensor and one end of the fourth flame sensor are both movably disposed in the guide portion.

In some embodiments of the present application, a distance scale is provided on one side of the guide portion, and the distance scale is provided along an extending direction of the guide portion.

In some embodiments of the present application, a fifth flame sensor is further included, one end of the fifth flame sensor being movably disposed within the guide, the fifth flame sensor being disposed between the third flame sensor and the fourth flame sensor.

In some embodiments of the present application, the first flame sensor, the second flame sensor, the third flame sensor, the fourth flame sensor, and the fifth flame sensor each include a light shielding portion and a probe, the light shielding portion is formed with an installation cavity and an opening in communication with the installation cavity, the probe is installed in the installation cavity and is oriented toward the opening, and the opening is oriented toward a predetermined direction.

In some embodiments of the present application, the second clamping assembly includes a clamping seat and a clamping frame, the clamping seat extends along the first direction and is connected with the first moving assembly, the clamping frames are several, the clamping frame is vertically arranged on the clamping seat, and a clamping position for the sample to pass through is formed between the clamping seat and the clamping frame;

wherein the clamping frame is configured to adjust the size of the clamping position.

In some embodiments of the present application, the clamping frame includes a first clamping block and a second clamping block, the first clamping block is provided in two and vertically standing on two sides of the top of the clamping seat, and the first clamping block is configured to be movable along the width direction of the clamping seat;

the second clamping blocks are arranged in two and correspond to the first clamping blocks one by one, the second clamping blocks are transversely arranged on the first clamping blocks, and the second clamping blocks are configured to move along the extending direction of the first clamping blocks.

In some embodiments of the present application, an ignition device is disposed in the test chamber, the combustion testing device further comprises a second moving mechanism configured to move along the first direction, the ignition device is disposed on the second moving mechanism and is movable therewith, and the ignition device is electrically connected with the controller.

In some embodiments of the present application, further comprising:

the oxygen concentration sensor is arranged in the test cavity and is far away from the second clamping assembly and used for detecting the oxygen concentration in the test cavity;

the combustible gas detector is arranged in the test cavity and is used for detecting the concentration of the combustible gas;

the alarm is arranged on the box body;

wherein, oxygen concentration sensor, combustible gas detector and alarm all with the controller electricity is connected.

Compared with the prior art, the utility model provides a combustion testing device, which has the beneficial effects that:

the utility model provides a combustion testing device which comprises a box body, a supporting frame, a first moving mechanism, a first clamping component, a second clamping component, a first flame sensor, a second flame sensor, a third flame sensor, a fourth flame sensor, a timer and a controller. Based on the structure, the fixed end of the sample is clamped on the first clamping component, the free end of the sample for burning is clamped on the second clamping component, when the sample starts burning and passes through the lower parts of the first flame sensor and the second flame sensor, the flame spreading speed is calculated through the timer, the controller controls the first moving component to drive the second clamping component to move towards the first clamping component at the flame spreading speed, so that the moving speed of the second clamping component is matched with the flame spreading condition, the horizontal state of the unburned part of the sample can be maintained, the burning part of the sample can be prevented from directly spreading onto the second clamping component, the burning state of the sample is prevented from being influenced or the service life of the second clamping component is prevented from being influenced, and the accuracy of the burning test is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a combustion testing apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial structure of a combustion testing apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic top view of a second clamping assembly according to an embodiment of the present utility model;

fig. 4 is a schematic side view of a second clamping assembly according to an embodiment of the utility model.

In the figure: 1. a case; 11. a test chamber; 2. a support frame; 3. a first clamping assembly; 4. a first moving mechanism; 41. a ruler; 5. a second clamping assembly; 51. a clamping seat; 52. a clamping frame; 521. a first clamping block; 522. a second clamping block; 61. a first flame sensor; 62. a second flame sensor; 63. a third flame sensor; 64. a fourth flame sensor; 65. a fifth flame sensor; 66. a light shielding section; 67. a probe; 7. a mounting part; 71. a guide part; 72. a distance scale; 81. an ignition device; 82. a second moving mechanism; 91. an oxygen concentration sensor; 92. a combustible gas detector; 93. an alarm; 94. a wind speed sensor; 10. and (3) a sample.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application.

It should be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e., features defining "first," "second," may explicitly or implicitly include one or more such features. Furthermore, unless otherwise indicated, the meaning of "a plurality" is two or more.

It should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a combustion testing apparatus, which includes a case 1, a support frame 2, a first moving mechanism 4, a first clamping assembly 3, a second clamping assembly 5, a first flame sensor 61, a second flame sensor 62, a third flame sensor 63, a fourth flame sensor 64, a timer, and a controller.

The box 1 is formed with test chamber 11, and support frame 2 sets up in test chamber 11, and first clamping assembly 3 sets up on support frame 2 for the stiff end of centre gripping sample 10. In particular, the first clamping assembly 3 may be embodied as a press bar, a clamping jaw, a clamping arm or the like.

The first moving mechanism 4 is disposed in the test chamber 11, and the first moving mechanism 4 includes a first moving assembly configured to move in a first direction and a scale 41 disposed below the moving assembly and extending in the first direction. The second clamping assembly 5 is arranged on the first moving assembly and can move along with the first moving assembly, and is used for clamping the sample 10 at a position close to the free end. The first moving component can be specifically configured as a motor and a screw slider transmission mechanism, or be configured as a single machine and a worm gear transmission mechanism, and other driving components capable of driving the second clamping component 5 to reciprocate along the first direction.

The first flame sensor 61, the second flame sensor 62, the third flame sensor 63, and the fourth flame sensor 64 are movably disposed in the test chamber 11 and are sequentially disposed in the first direction. The first flame sensor 61 and the second flame sensor 62 are arranged side by side, and the flame spreading speed can be determined by checking the spreading position of the flame by the two, and combining the timing of the timer, so that the moving speed of the first moving assembly is convenient to control not to be lower than the flame spreading speed. The third flame sensor 63 is disposed above the start position of the combustion test for detecting the flame combustion condition at the start position of the test, and the fourth flame sensor 64 is disposed above the end position of the combustion test for detecting the flame combustion condition at the end position of the test. It will be appreciated that the first moving assembly is configured to be movable at least between the vertical planes of the first clamping assembly 3 and the fourth flame sensor 64, i.e. the second clamping assembly 5 is movable past under the fourth flame sensor 64.

The timer, the first moving assembly, the first flame sensor 61, the second flame sensor 62, the third flame sensor 63, and the fourth flame sensor 64 are all electrically connected to the controller.

Wherein the first direction is a horizontal direction towards the first clamping assembly 3.

Based on the above structure, the fixed end of the sample 10 is clamped on the first clamping component 3, the free end of the sample 10 for burning is clamped on the second clamping component 5, when the sample 10 starts burning and passes under the first flame sensor 61 and the second flame sensor 62, the flame spreading speed is calculated by the timer, the controller controls the first moving component to drive the second clamping component 5 to move towards the first clamping component 3 at the flame spreading speed, so that the moving speed of the second clamping component 5 is matched with the flame spreading condition, the horizontal state of the unburned part of the sample 10 can be maintained, the burning part of the sample 10 can be prevented from directly spreading to the second clamping component 5, further the burning state of the sample 10 is prevented from being influenced or the service life of the second clamping component 5 is prevented from being influenced, and the accuracy of the burning test is improved.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, the combustion testing apparatus further includes a mounting portion 7, the mounting portion 7 being disposed in the test chamber 11 and configured to be slidable in the vertical direction and the first direction, specifically, in the present embodiment, the mounting portion 7 is used to be connected with a lifter, and the lifter is disposed in a slide groove or a slide rail extending in the first direction, so that the mounting portion 7 is slidable in the vertical direction and the first direction. Of course, the mounting portion 7 may be mounted in the test chamber 11 by other means for achieving movement in the vertical and horizontal directions. The first flame sensor 61, the second flame sensor 62, the third flame sensor 63, and the fourth flame sensor 64 are mounted on the mounting portion 7. Based on this, the first flame sensor 61, the second flame sensor 62, the third flame sensor 63, and the fourth flame sensor 64 can adjust the test position according to the size of the sample 10, and can adjust the distance in the vertical direction so as to be close to the sample 10 or to be far from the sample 10, thereby realizing adjustment of the detection accuracy.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, the mounting portion 7 is provided with a guide portion 71 extending in the first direction, and one end of the third flame sensor 63 and one end of the fourth flame sensor 64 are both movably provided in the guide portion 71. Specifically, the guide portion 71 may be a structure having a guide function, such as a chute or a slide rail.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, one side of the guide portion 71 is provided with a distance scale 72, and the distance scale 72 is provided along the extending direction of the guide portion 71. In this way, the third flame sensor 63 and the fourth flame sensor 64 can accurately adjust the detection position according to the distance scale 72, thereby adjusting the position range of the combustion test.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, the combustion test apparatus further includes a fifth flame sensor 65, one end of the fifth flame sensor 65 is movably disposed in the guide portion 71, the fifth flame sensor 65 is disposed between the third flame sensor 63 and the fourth flame sensor 64, and specifically, the height and horizontal position of the fifth flame sensor 65 are adjusted so that the detection range of the fifth flame sensor 65 covers the area between the third flame sensor 63 and the fourth flame sensor 64. Based on this, when the sample 10 burns between the third flame sensor 63 and the fourth flame sensor 64, the fifth flame sensor 65 may detect and record the state of the sample 10 burning.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, each of the first flame sensor 61, the second flame sensor 62, the third flame sensor 63, the fourth flame sensor 64, and the fifth flame sensor 65 includes a light shielding portion 66 and a probe 67, the light shielding portion 66 is formed with a mounting cavity and an opening communicating with the mounting cavity, the probe 67 is mounted in the mounting cavity and faces the opening, and the opening is provided toward a predetermined direction. Specifically, the light shielding portion 66 may be provided in a straight cylindrical shape or a horn shape, and the predetermined direction is a direction toward the combustion locus of the sample 10. Based on this, the light shielding portion 66 can shield light interference outside a certain range, reducing test errors, so that the detection of the first flame sensor 61, the second flame sensor 62, the third flame sensor 63, and the fourth flame sensor 64 is not interfered with each other.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, the second clamping assembly 5 includes a clamping seat 51 and a clamping frame 52, and the clamping seat 51 extends in a first direction, which is connected to the first moving assembly. Preferably, the clamping seat 51 is hinged with the first moving assembly, so that the angle between the clamping seat and the horizontal direction can be adjusted to meet the testing requirements of various angles.

The clamping frames 52 are arranged in a plurality, the clamping frames 52 are vertically arranged on the clamping seat 51, and clamping positions for the sample 10 to pass through are formed between the clamping frames 52; wherein the clamping frame 52 is configured to adjust the size of the clamping position.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, the clamping frame 52 includes a first clamping block 521 and a second clamping block 522, the first clamping block 521 is provided in two and vertically standing on both sides of the top of the clamping seat 51, respectively, and the first clamping block 521 is configured to be movable in the width direction of the clamping seat 51; the two second clamping blocks 522 are arranged and correspond to the first clamping blocks 521 one by one, the second clamping blocks 522 are transversely arranged on the first clamping blocks 521, and the second clamping blocks 522 are configured to be movable along the extending direction of the first clamping blocks 521.

Alternatively, as shown in fig. 1 to 4, in the present embodiment, an ignition device 81 is disposed in the test chamber 11, and the combustion test device further includes a second moving mechanism 82, where the second moving mechanism 82 is configured to be movable in the first direction, and the ignition device 81 is disposed on the second moving mechanism 82 and movable therewith, and the ignition device 81 is electrically connected to the controller.

Optionally, as shown in fig. 1 to 4, in the present embodiment, the combustion test apparatus further includes an oxygen concentration sensor 91, a combustible gas detector 92, and an alarm 93.

An oxygen concentration sensor 91 is disposed within the test chamber 11 and remote from the second clamping assembly 5 for detecting the oxygen concentration within the test chamber 11. A combustible gas detector 92 is disposed in the test chamber 11 for detecting the concentration of the combustible gas. The alarm 93 is provided on the case 1. Wherein the oxygen concentration sensor 91, the flammable gas detector 92, and the alarm 93 are all electrically connected to the controller. Preferably, the oxygen concentration sensors 91 are provided in two and are respectively arranged at the upper right and lower left of the test chamber 11, are diagonally installed, and are far away from the ignition source to avoid local combustion from causing monitoring errors; the two flammable gas detectors 92 are respectively arranged at the upper left and lower right of the test cavity 11, the lower right of the test cavity 11 is provided with an air source outlet, the flammable gas detector 92 at the lower right can monitor whether the air supply and air outlet lines have air leakage, and the flammable gas detector 92 at the upper left can monitor the overall environment. Preferably, the combustion testing device further comprises a wind speed sensor 94, the wind speed sensor 94 being arranged in the test chamber 11 and being arranged close to the scale 41 for detecting internal wind speed variations, in particular the wind speed of the combustion area of the sample 10.

The controller is also electrically connected with touch display screen, displacement sensor, camera, control panel, gas supply device, and can set ignition time, record combustion state, start time, start distance, end time, and end distance during test, and calculate linear movement speed according to formula. The gas supply device comprises a dry air supply assembly, an oxygen supply assembly and a combustible gas supply assembly, wherein the combustible gas supply assembly can adjust the flow rate according to the flame size and the capability required by the test. The dry air supply component and the oxygen supply component are input into the device according to a certain proportion, and the ambient oxygen concentration can be dynamically adjusted.

In summary, the embodiment of the utility model provides a combustion testing device, which mainly comprises a box body 1, a supporting frame 2, a first moving mechanism 4, a first clamping component 3, a second clamping component 5, a first flame sensor 61, a second flame sensor 62, a third flame sensor 63, a fourth flame sensor 64, a timer and a controller. Compared with the prior art, the combustion testing device has the following advantages:

the fixed end of the sample is clamped on the first clamping component, the free end of the sample for burning is clamped on the second clamping component, when the sample starts burning and passes through the lower parts of the first flame sensor and the second flame sensor, the flame spreading speed is calculated through the timer, the controller controls the first moving component to drive the second clamping component to move towards the first clamping component at the flame spreading speed, so that the moving speed of the second clamping component is matched with the flame spreading condition, the horizontal state of the unburned part of the sample can be maintained, the burning part of the sample can be prevented from directly spreading to the second clamping component, and further the burning state of the sample is prevented from being influenced or the service life of the second clamping component is prevented from being influenced, and the accuracy of the burning test is improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. A combustion testing apparatus, comprising:

a box body, which is provided with a test cavity;

the support frame is arranged in the test cavity;

2. The combustion testing apparatus of claim 1, wherein:

the test chamber comprises a test cavity, a mounting part and a control part, wherein the test cavity is provided with a plurality of test cavities, and the test cavity is provided with a plurality of test cavities;

3. The combustion testing apparatus of claim 2, wherein:

the installation part is provided with a guide part extending along the first direction, and one end of the third flame sensor and one end of the fourth flame sensor are movably arranged in the guide part.

4. A combustion testing apparatus as in claim 3, wherein:

one side of the guide part is provided with a distance scale, and the distance scale is arranged along the extending direction of the guide part.

5. A combustion testing apparatus as in claim 3, wherein:

the flame sensor also comprises a fifth flame sensor, one end of the fifth flame sensor is movably arranged in the guide part, and the fifth flame sensor is arranged between the third flame sensor and the fourth flame sensor.

6. The combustion testing apparatus of claim 5, wherein:

the first flame sensor, the second flame sensor, the third flame sensor, the fourth flame sensor and the fifth flame sensor all comprise a shading part and a probe, the shading part is formed with an installation cavity and an opening communicated with the installation cavity, the probe is installed in the installation cavity and faces the opening, and the opening faces a preset direction.

7. The combustion testing apparatus of claim 1, wherein:

the second clamping assembly comprises clamping seats and clamping frames, the clamping seats extend along the first direction and are connected with the first moving assembly, the clamping frames are arranged in a plurality, the clamping frames are vertically arranged on the clamping seats, and clamping positions for the sample to pass through are formed between the clamping seats;

8. The combustion testing apparatus of claim 7, wherein:

the clamping frame comprises a first clamping block and a second clamping block, the two first clamping blocks are respectively and vertically arranged on two sides of the top of the clamping seat, and the first clamping block is configured to move along the width direction of the clamping seat;

9. The combustion testing apparatus of claim 1, wherein:

the combustion testing device comprises a test cavity, and is characterized in that an ignition device is arranged in the test cavity, the combustion testing device further comprises a second moving mechanism, the second moving mechanism is configured to move along the first direction, the ignition device is arranged on the second moving mechanism and can move along with the second moving mechanism, and the ignition device is electrically connected with the controller.

10. The combustion testing apparatus of claim 1, wherein:

further comprises:

the alarm is arranged on the box body;