Multi-angle fire retardant coating combustion tester

Abstract

The present invention discloses a multi-angle fire retardant coating combustion tester, including a box and a rotating device, a vertical moving device, a nozzle device and a horizontal rod, the rotating device includes a sample holder, a first thermocouple, a rotating arm and a motor, the sample holder can be slidably mounted on the rotating arm, the fire retardant coating sample includes a fire retardant coating surface and a temperature measuring surface, and the probe is attached to the temperature measuring surface; the vertical moving device includes a vertical axis and a linear motor; the nozzle device includes a nozzle part, a rotating shaft, a mounting block, and a protractor, the nozzle device is located below the fire retardant coating sample, the nozzle part includes a nozzle port, the nozzle part is fixed on the rotating shaft, the rotating shaft is rotatably mounted in the mounting block, the protractor is fixed on the mounting block, and the mounting block is fixedly connected to the vertical axis; the horizontal rod extends along the width direction of the box, and the vertical moving device can be slidably mounted on the horizontal rod. The multi-angle fire retardant coating combustion tester provided by the present invention is used to realize multi-angle combustion experimental testing of fire retardant coatings.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion testing, and more specifically, to a multi-angle fire retardant coating combustion tester. Background Art

[0002] Among building materials, steel structure has been widely used due to its advantages of high strength, light weight, good ductility, earthquake resistance, short construction period, etc., especially in super high-rise and large-span buildings. The application of steel structure materials in my country's construction industry has a very broad prospect. At the same time, the fire protection of steel structures has become more and more important. Steel structure fire retardant coatings occupy a very important position in the fire protection of steel structures. Steel structure fire retardant coatings are applied to the surface of steel structures to play a role in fireproofing and heat insulation protection, avoiding the rapid heating of steel structures in fires and the loss of strength and flexural deformation and collapse, thereby providing more sufficient time for personnel to escape.

[0003] Fire retardant coatings for steel structures have developed rapidly, with product types evolving from thick coatings to thin coatings, ultra-thin coatings, and thin-layer intumescent fire retardant coatings suitable for outdoor steel structures. my country has made a series of regulations on fire protection for steel structures, such as the Code for Fire Protection Design of Buildings GB50016-2014, which was revised in 2014 and implemented in 2015. It clearly stipulates that fire protection measures must be taken for components of metal structures such as steel structures, and that they must meet the fire resistance limit requirements of the corresponding fire resistance grade buildings for the structural components.

[0004] At present, the "Code for Fire Protection Design of Buildings" GB50016-2014 only stipulates the horizontal combustion test of samples. There are also horizontal and vertical combustion testers in the existing technology. However, the actual fire scene is complex and changeable, and the angle of contact between the flame and the steel structure is also complex and changeable. Therefore, when conducting the fire retardant coating combustion experiment, it is also necessary to consider the impact of flames at different angles on the temperature of the side of the sample facing away from the fire retardant coating.

[0005] Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a multi-angle fire retardant coating combustion tester to realize multi-angle combustion experimental testing of fire retardant coatings.

[0007] Based on the above purpose, the present invention provides a multi-angle fire retardant coating combustion tester, including a box body and a rotating device, a vertical moving device, a nozzle device and a horizontal rod all installed in the box body, wherein: the rotating device includes a sample holder, a first thermocouple, a rotating arm extending along the length direction of the box body and a motor driving the rotating arm to rotate, the sample holder is slidably installed on the rotating arm, the sample holder is used to clamp the fire retardant coating sample, the fire retardant coating sample includes a fire retardant coating surface and a temperature measuring surface arranged in back to back, the first thermocouple includes a probe, the probe is attached to the temperature measuring surface, and is used to detect the temperature of the temperature measuring surface; the vertical moving device includes a vertical axis and a linear motor driving the vertical axis to move vertically; the nozzle device The device includes a nozzle member connected to the gas, a rotating shaft, a mounting block, and a protractor, wherein the nozzle device is located below the fire retardant coating sample, the nozzle member includes a nozzle port, and the nozzle port faces the fire retardant coating surface, the nozzle member is fixed on the rotating shaft, and the rotating shaft is rotatably mounted in the mounting block to drive the nozzle member to rotate along with the rotating shaft, the protractor is fixed on the mounting block to measure the rotation angle of the nozzle member, and the mounting block is fixedly connected to the vertical axis; the horizontal rod extends along the width direction of the box body, and both ends of the horizontal rod are fixedly mounted on the inner wall of the box body, and the vertical moving device is slidably mounted on the horizontal rod to drive the nozzle device to be slidably arranged along the horizontal rod.

[0008] Optionally, a sliding rod is installed on the rotating arm, and the sample holder includes a fixed block, a steel bar, a first bolt, a second bolt, and a first sliding frame and a second sliding frame arranged oppositely, and the first sliding frame and the second sliding frame can be slidably installed on the sliding rod; the fixed block includes a fitting surface and a mounting surface arranged opposite to each other, and the fitting surface is fitted on the temperature measuring surface, and the first sliding frame and the second sliding frame are respectively mounted on two side surfaces arranged oppositely on the fixed block, and the steel bar is detachably fitted on the mounting surface, and the first threaded hole and the second threaded hole are respectively opened at two opposite ends of the steel bar, and the first sliding frame is opened with a third threaded hole, and the second sliding frame A fourth threaded hole is provided on the frame, and the first bolt is successively passed through the first threaded hole and the third threaded hole to fix one end of the steel bar to the first sliding frame, and the second bolt is successively passed through the second threaded hole and the fourth threaded hole to fix the other end of the steel bar to the second sliding frame; the first sliding frame includes a first bending part, and the first bending part is installed on the side of the first sliding frame facing away from the steel bar, and the second sliding frame includes a second bending part, and the second bending part is installed on the side of the second sliding frame facing away from the steel bar, and the first bending part and the second bending part are respectively supported and installed at both ends of the fire retardant coating surface to clamp the fire retardant coating sample.

[0009] Optionally, a card slot is provided on the fixed block, there are three first thermocouples, three card slots, and three probes. The three first thermocouples are respectively and correspondingly connected in the three card slots, and the three probes are respectively attached to one quarter of the temperature measuring surface, one half of the temperature measuring surface, and three quarters of the temperature measuring surface.

[0010] Optionally, the multi-angle fire retardant coating combustion tester also includes a second thermocouple, and the nozzle device also includes a bracket, and the second thermocouple is detachably mounted on the bracket; the vertical moving device also includes a connecting block, the vertical axis is fixed on the connecting block, and the bracket is fixed on the connecting block, and the mounting block is fixedly connected to the vertical axis via the bracket and the connecting block; the second thermocouple includes a detection probe, and the detection probe is located above the nozzle mouth to detect the temperature of the flame at the nozzle mouth.

[0011] Optionally, the rotation angle of the nozzle member is 0-90°.

[0012] Optionally, the multi-angle fire retardant coating combustion tester also includes a camera and a light source, a rotating shaft is provided in the rotating arm, and the motor drives the rotating shaft to rotate to drive the rotating arm to rotate; the rotating device also includes a rotating frame extending along the width direction of the box, the rotating frame is fixed on the rotating arm, and rotates synchronously with the rotating arm; the fire retardant coating sample also includes a side surface, the side surface is connected between the temperature measuring surface and the fire retardant coating surface, the camera and the light source are both installed on the rotating frame, and are both facing the side surface.

[0013] Optionally, the rotation angle of the rotating arm is 0-90°, and the rotation angle of the fire retardant coating sample is also 0-90°.

[0014] Optionally, the multi-angle fire retardant coating combustion tester also includes a background plate, the fire retardant coating sample is located between the camera and the background plate, and the side projection is located on the background plate.

[0015] Optionally, the box body is provided with a smoke outlet and a ventilation hole.

[0016] Optionally, a display screen, a first operation button and a second operation button are provided on the box body, the first thermocouple and the second thermocouple are both communicatively connected to the display screen, the first operation button is used to operate the opening and closing of the motor, and the second operation button is used to operate the opening and closing of the linear motor.

[0017] Optionally, a sleeve is provided on the connecting block, the horizontal rod is sleeved in the sleeve, and the nozzle device and the vertical moving device are slidably arranged together on the horizontal rod through the sleeve.

[0018] Optionally, the measuring ranges of the first thermocouple and the second thermocouple are both 0-1100°C.

[0019] The multi-angle fire retardant coating combustion tester provided by the present invention comprises a housing and a rotating device, a vertical moving device, a nozzle device and a horizontal rod all installed in the housing. The fire retardant coating sample can be rotated by the rotating device, and the vertical movement of the vertical axis drives the nozzle device to move in the vertical direction. The nozzle device and the vertical moving device can slide on the horizontal rod together, and the fire retardant coating sample can slide on the rotating arm, so as to facilitate the adjustment of the relative position and angle between the fire retardant coating sample and the nozzle mouth. The first thermocouple can measure the temperature of the temperature measuring surface on the fire retardant coating sample, that is, the temperature of the surface facing away from the fire retardant coating, thereby realizing multi-angle combustion experimental testing of the fire retardant coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:

[0021] Figure 1 This is a structural schematic diagram of a multi-angle fire retardant coating combustion tester according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a box in a multi-angle fire retardant coating combustion tester according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the nozzle member and the second thermocouple in the multi-angle fire retardant coating combustion tester according to one embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a rotating arm and a sample holder in a multi-angle fire retardant coating combustion tester according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1: Box; 2: Rotating device; 3: Vertical moving device; 4: Nozzle device; 5: Horizontal rod; 6: Second thermocouple; 7: Camera; 8: Light source; 9: Background board; 10: Smoke outlet;

[0027] 11: ventilation hole; 12: display screen; 13: first operation button; 14: second operation button;

[0028] 21: sample holder; 22: first thermocouple; 23: rotating arm; 24: motor; 25: fire retardant coating sample; 26: temperature measuring surface; 27: fire retardant coating surface; 28: rotating frame; 29: rotating axis;

[0029] 31: vertical axis; 32: linear motor; 33: connecting block; 34: sleeve;

[0030] 41: nozzle member; 42: rotating shaft; 43: mounting block; 44: protractor; 45: nozzle opening; 46: bracket;

[0031] 61: sliding rod; 62: fixing block; 63: steel bar; 64: first threaded hole; 65: second threaded hole; 66: first sliding frame; 67: second sliding frame; 68: mounting surface; 71: first bending part; 72: second bending part; 73: slot; 74: drip tray; 75: box body. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the embodiments. The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0033] like Figures 1 to 4 As shown, the multi-angle fire retardant coating combustion tester provided by the present invention comprises a box body 1 and a rotating device 2, a vertical moving device 3, a nozzle device 4 and a horizontal rod 5 all installed in the box body 1, wherein: the rotating device 2 comprises a sample holder 21, a first thermocouple 22, a rotating arm 23 extending along the length direction of the box body 1 and a motor 24 driving the rotating arm 23 to rotate, the sample holder 21 is slidably installed on the rotating arm 23, the sample holder 21 is used to clamp the fire retardant coating sample 25, the fire retardant coating sample 25 comprises a fire retardant coating surface 27 and a temperature measuring surface 26 arranged in reverse, the first thermocouple 22 comprises a probe, the probe is attached to the temperature measuring surface 26, and is used to detect the temperature of the temperature measuring surface 26; the vertical moving device 3 comprises a vertical axis 31 and a linear motor 32 driving the vertical axis 31 to move vertically ; The nozzle device 4 includes a nozzle member 41 connected to the gas, a rotating shaft 42, a mounting block 43, and a protractor 44. The nozzle device 4 is located below the fire retardant coating sample 25. The nozzle member 41 includes a nozzle port 45, and the nozzle port 45 faces the fire retardant coating surface 27. The nozzle member 41 is fixed on the rotating shaft 42, and the rotating shaft 42 is rotatably mounted in the mounting block 43 to drive the nozzle member 41 to rotate along with the rotating shaft 42. The protractor 44 is fixed on the mounting block 43 and is used to measure the rotation angle of the nozzle member 41. The mounting block 43 is fixedly connected to the vertical axis 31; the horizontal rod 5 extends along the width direction of the box body 1, and both ends of the horizontal rod 5 are fixedly mounted on the inner wall of the box body 1. The vertical moving device 3 is slidably mounted on the horizontal rod 5 to drive the nozzle device 4 to be slidably set along the horizontal rod 5.

[0034] It should be noted that: the fire retardant coating sample 25 can be a steel plate coated with fire retardant coating; the nozzle port 45 can be connected to a gas cylinder containing gas; the nozzle part 41 can be composed of the nozzle port 45 and a nozzle rod, and the nozzle port 45 is installed on the end face of the nozzle rod; the vertical direction is the height direction of the box body 1.

[0035] The multi-angle fire retardant coating combustion tester provided by the present invention comprises a housing 1 and a rotating device 2, a vertical moving device 3, a nozzle device 4 and a horizontal rod 5 all installed in the housing 1. The fire retardant coating sample 25 can be rotated by the rotating device 2, and the vertical movement of the vertical axis 31 drives the nozzle device 4 to move in the vertical direction. The nozzle device 4 and the vertical moving device 3 can slide on the horizontal rod 5, and the fire retardant coating sample 25 can slide on the rotating arm 23, so as to facilitate the adjustment of the relative position and angle between the fire retardant coating sample 25 and the nozzle mouth 45. The first thermocouple 22 can measure the temperature of the temperature measuring surface 26 on the fire retardant coating sample 25, that is, the temperature of the surface 27 facing away from the fire retardant coating, thereby realizing multi-angle combustion experimental testing of the fire retardant coating.

[0036] like Figure 1 and Figure 4As shown, a sliding rod 61 is installed on the rotating arm 23, and the sample holder 21 includes a fixed block 62, a steel bar 63, a first bolt, a second bolt, and a first sliding frame 66 and a second sliding frame 67 arranged oppositely. The first sliding frame 66 and the second sliding frame 67 can be slidably installed on the sliding rod 61; the fixed block 62 includes a fitting surface and a mounting surface 68 arranged opposite to each other, and the fitting surface is fitted on the temperature measuring surface 26. The first sliding frame 66 and the second sliding frame 67 are respectively installed on the two side surfaces arranged oppositely on the fixed block 62, and the steel bar 63 is detachably fitted on the mounting surface 68. The opposite ends of the steel bar 63 are respectively provided with a first threaded hole 64 and a second threaded hole 65, and the first sliding frame 66 is provided with a third threaded hole. A fourth threaded hole is provided on the second sliding frame 67, and the first bolt is successively passed through the first threaded hole 64 and the third threaded hole to fix one end of the steel bar 63 on the first sliding frame 66, and the second bolt is successively passed through the second threaded hole 65 and the fourth threaded hole to fix the other end of the steel bar 63 on the second sliding frame 67; the first sliding frame 66 includes a first bending member 71, and the first bending member 71 is installed on the side of the first sliding frame 66 facing away from the steel bar 63, and the second sliding frame 67 includes a second bending member 72, and the second bending member 72 is installed on the side of the second sliding frame 67 facing away from the steel bar 63, and the first bending member 71 and the second bending member 72 are respectively supported and installed at both ends of the fire retardant coating surface 27 to clamp the fire retardant coating sample 25. It should be noted that: when the fire retardant coating sample 25 is installed in the sample holder 21 through the first bending piece 71 and the second bending piece 72, the fire retardant coating surface 27 is exposed to the outside, so as to facilitate the flame combustion experiment; the steel bar 63 can be two or more. In this embodiment, the fire retardant coating sample 25 can slide on the sliding rod 61 to facilitate the adjustment of the relative position of the fire retardant coating sample 25 and the nozzle port 45, thereby improving the convenience of operation of the multi-angle fire retardant coating combustion tester; the fixed block 62 is detachably installed on the temperature measuring surface 26 through the steel bar 63, and the first sliding frame 66 and the second sliding frame 67 clamp the fixed block 62 between the first sliding frame 66 and the second sliding frame 67, so that the fixed block 62 is more firmly installed on the temperature measuring surface 26, avoiding the fire retardant coating sample 25 from moving due to shaking and other reasons, thereby improving the structural stability of the multi-angle fire retardant coating combustion tester; the fire retardant coating sample 25 is detachably installed in the sample holder 21, which is convenient for replacing the fire retardant coating sample 25.

[0037] like Figure 4As shown, a slot 73 is provided on the fixed block 62, there are three first thermocouples 22, three slots 73, and three probes. The three first thermocouples 22 are respectively connected to the three slots 73, and the three probes are respectively attached to one-fourth of the temperature measuring surface 26, one-half of the temperature measuring surface 26, and three-quarters of the temperature measuring surface 26. It should be noted that the number of the first thermocouples 22 is not limited, and there can also be multiple. Generally, the highest value of the temperature measured at multiple locations on the temperature measuring surface 26 is taken as the temperature of the measuring surface. In this embodiment, the slot 73 connects the first thermocouple 22 to the temperature measuring surface 26, avoiding the displacement of the first thermocouple 22, and the three thermocouples measure the temperature at different positions of the temperature measuring surface 26, thereby improving the accuracy of the temperature measurement of the temperature measuring surface 26, thereby improving the accuracy of the combustion experiment test of the multi-angle fire retardant coating combustion tester.

[0038] like Figure 1 and Figure 3 As shown, the multi-angle fire retardant coating combustion tester also includes a second thermocouple 6, the nozzle device 4 also includes a bracket 46, and the second thermocouple 6 is detachably mounted on the bracket 46; the vertical moving device 3 also includes a connecting block 33, the vertical axis 31 is fixed on the connecting block 33, the bracket 46 is fixed on the connecting block 33, and the mounting block 43 is fixedly connected to the vertical axis 31 through the bracket 46 and the connecting block 33; the second thermocouple 6 includes a detection probe, and the detection probe is located above the nozzle port 45 to detect the temperature of the flame at the nozzle port 45. Specifically, the second thermocouple 6 can be detachably mounted on the bracket 46 by a stainless steel buckle. In this embodiment, the flame temperature at the nozzle port 45 is measured by the second thermocouple 6. When the flame temperature value is stable, the fire retardant coating surface 27 is burned by the flame, thereby improving the accuracy of the combustion experiment test of the multi-angle fire retardant coating combustion tester.

[0039] In one embodiment of the present invention, the rotation angle of the nozzle member 41 is 0-90°. The rotation of the nozzle member 41 facilitates the adjustment of the angle between the fire retardant coating layer and the nozzle opening 45, and can simulate the flame combustion direction at various angles, so as to realize multi-angle combustion experimental testing of the fire retardant coating.

[0040] like Figure 1As shown, the multi-angle fire retardant coating combustion tester also includes a camera 7 and a light source 8. A rotating shaft 29 is provided in the rotating arm 23. The motor 24 drives the rotating shaft 29 to rotate, so as to drive the rotating arm 23 to rotate. The rotating device 2 also includes a rotating frame 28 extending along the width direction of the box 1. The rotating frame 28 is fixed on the rotating arm 23 and rotates synchronously with the rotating arm 23. The fire retardant coating sample 25 also includes a side surface, which is connected between the temperature measuring surface 26 and the fire retardant coating surface 27. The camera 7 and the light source 8 are both installed on the rotating frame 28 and are facing the side surface. In this embodiment, the camera 7 and the light source 8 rotate synchronously with the fire retardant coating sample 25, so that when the fire retardant coating sample 25 rotates to a certain angle, the camera 7 is always facing the side surface of the fire retardant coating sample 25. The camera 7 can record the whole process of the combustion test experiment. The light source 8 illuminates the box 1, so that the expansion morphology of the fire retardant coating sample 25 captured by the camera is clearer, which improves the convenience of use of the multi-angle fire retardant coating combustion tester.

[0041] In one embodiment of the present invention, the rotation angle of the rotating arm 23 is 0-90°, and the rotation angle of the fire retardant coating sample 25 is also 0-90°. The multi-angle rotation of the fire retardant coating sample 25 facilitates the combustion experiment testing of the fire retardant coating sample 25 at different angles. For example, when conducting a simulated horizontal combustion experiment, the fire retardant coating sample 25 can be rotated to an angle of 0° with the horizontal plane by rotating the rotating arm 23; when conducting a simulated vertical combustion experiment, the coating sample can be rotated to an angle of 90° with the horizontal plane by rotating the rotating arm 23, thereby improving the ease of use of the multi-angle fire retardant coating combustion tester.

[0042] like Figure 1 As shown, the multi-angle fire retardant coating combustion tester also includes a background plate 9, and the fire retardant coating sample 25 is located between the camera 7 and the background plate 9, and the side projection is located on the background plate 9. In this embodiment, the background plate 9 can be a light-colored background plate 9, and the background plate 9 makes the expansion morphology of the fire retardant coating sample 25 photographed by the camera 7 more recognizable, thereby improving the convenience of using the multi-angle fire retardant coating combustion tester.

[0043] like Figure 1 As shown, a smoke outlet 10 and a ventilation hole 11 are provided on the box body 1. In this embodiment, the smoke outlet 10 and the ventilation hole 11 can discharge the smoke generated by the combustion in the box body 1 out of the box body 1 in a timely manner, avoiding the smoke from causing unclear effects on the shooting effect of the camera 7, and improving the convenience of using the multi-angle fire retardant coating combustion tester.

[0044] like Figure 2As shown, the box body 1 is provided with a display screen 12, a first operation button 13 and a second operation button 14, the first thermocouple 22 and the second thermocouple 6 are both connected to the display screen 12, the first operation button 13 is used to operate the opening and closing of the motor 24, and the second operation button 14 is used to operate the opening and closing of the linear motor 32. It should be noted that: a box door 75 is provided on the box body 1, and the box door 75 can be closed when the combustion experiment is carried out in the box body 1. In this embodiment, the values ​​of the first thermocouple 22 and the second thermocouple 6 can be read out through the display screen 12, which is convenient for the operator to understand the temperature value in time. In addition, the first operation button 13 and the second operation button 14 also facilitate the operator to operate the opening and closing of the motor 24 and the linear motor 32, thereby improving the convenience of operation of the multi-angle fire retardant coating combustion tester.

[0045] like Figure 1 As shown, a sleeve 34 is provided on the connecting block 33, the horizontal rod 5 is sleeved in the sleeve 34, and the nozzle device 4 and the vertical moving device 3 are slidably arranged together on the horizontal rod 5 through the sleeve 34. In this embodiment, the sleeve 34 facilitates the sliding of the nozzle device 4 and the vertical moving device 3 on the horizontal rod 5, thereby improving the convenience of use of the multi-angle fire retardant coating combustion tester.

[0046] In one embodiment of the present invention, the measuring ranges of the first thermocouple 22 and the second thermocouple 6 are both 0-1100°C. On the one hand, the above measuring ranges can meet the temperature measurement range during the combustion experiment. On the other hand, the above measuring ranges are more reasonable and can display the temperature values ​​more accurately, thereby improving the ease of use of the multi-angle fire retardant coating combustion tester.

[0047] In one embodiment of the present invention, the combustion test process of the fire retardant coating surface 27 is as follows: first, the fire retardant coating sample 25 is installed in the sample holder 21, and the linear motor 32 is started to drive the vertical movement of the nozzle device 4 through the vertical movement of the vertical axis 31; the motor 24 is started to rotate the fire retardant coating sample 25 through the rotation of the rotating arm 23, and the fire retardant coating surface 27 is directed toward the nozzle opening 45, and the sample holder 21 is slid on the sliding rod 61 to adjust the position and angle between the fire retardant coating sample 25 and the nozzle opening 45, so that the nozzle opening 45 Facing the fire retardant coating surface 27, place the drip tray 74 under the fire retardant coating sample 25, install the background plate 9, turn on the camera 7 and the light source 8; then, electrically ignite the gas at the nozzle mouth 45 to make it burn, put the second thermocouple 6 into the flame, measure the temperature of the flame, and remove the second thermocouple 6 when the flame temperature value stabilizes; finally, the flame burns the protective coating surface, and measures the temperature of the temperature measuring surface 26 through the first thermocouple 22, and records the temperature measurement value on the display screen 12; finally, after the experiment, cut off the gas and power in time.

[0048] The multi-angle fire retardant coating combustion tester provided by the present invention comprises a housing 1 and a rotating device 2, a vertical moving device 3, a nozzle device 4 and a horizontal rod 5 all installed in the housing 1. The fire retardant coating sample 25 can be rotated by the rotating device 2, and the vertical movement of the vertical axis 31 drives the nozzle device 4 to move in the vertical direction. The nozzle device 4 and the vertical moving device 3 can slide on the horizontal rod 5, and the fire retardant coating sample 25 can slide on the rotating arm 23, so as to facilitate the adjustment of the relative position and angle between the fire retardant coating sample 25 and the nozzle mouth 45. The first thermocouple 22 can measure the temperature of the temperature measuring surface 26 on the fire retardant coating sample 25, that is, the temperature of the surface 27 facing away from the fire retardant coating, thereby realizing multi-angle combustion experimental testing of the fire retardant coating.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-angle fire retardant coating combustion tester, characterized in that: It includes a box body and a rotating device, a vertical moving device, a nozzle device and a horizontal rod all installed in the box body, wherein: The rotating device comprises a sample holder, a first thermocouple, a rotating arm extending along the length direction of the box body, and a motor driving the rotating arm to rotate, the sample holder is slidably mounted on the rotating arm, the sample holder is used to hold the fire retardant coating sample, the fire retardant coating sample comprises a fire retardant coating surface and a temperature measuring surface arranged in opposite directions, the first thermocouple comprises a probe, the probe is attached to the temperature measuring surface, and is used to detect the temperature of the temperature measuring surface; The vertical moving device comprises a vertical axis and a linear motor driving the vertical axis to move vertically; The nozzle device comprises a nozzle member connected to the gas, a rotating shaft, a mounting block, and a protractor. The nozzle device is located below the fire retardant coating sample. The nozzle member comprises a nozzle port, which faces the surface of the fire retardant coating. The nozzle member is fixed on the rotating shaft, which is rotatably mounted in the mounting block to drive the nozzle member to rotate along with the rotating shaft. The protractor is fixed on the mounting block and is used to measure the rotation angle of the nozzle member. The mounting block is fixedly connected to the vertical axis. The horizontal rod extends along the width direction of the box, and both ends of the horizontal rod are fixedly mounted on the inner wall of the box, and the vertical moving device is slidably mounted on the horizontal rod to drive the nozzle device to be slidably arranged along the horizontal rod; The rotating arm is provided with a sliding rod, and the sample holder comprises a fixed block, a steel bar, a first bolt, a second bolt, and a first sliding frame and a second sliding frame arranged oppositely, and the first sliding frame and the second sliding frame can be slidably mounted on the sliding rod; the fixed block comprises a fitting surface and a mounting surface arranged opposite to each other, and the fitting surface is fitted and mounted on the temperature measuring surface, and the first sliding frame and the second sliding frame are respectively mounted on two side surfaces arranged oppositely on the fixed block, and the steel bar is detachably fitted and mounted on the mounting surface, and the first threaded hole and the second threaded hole are respectively opened at two opposite ends of the steel bar, and the first sliding frame is provided with a third threaded hole, and the second sliding frame is provided with a A fourth threaded hole is provided, and the first bolt is successively passed through the first threaded hole and the third threaded hole to fix one end of the steel bar on the first sliding frame, and the second bolt is successively passed through the second threaded hole and the fourth threaded hole to fix the other end of the steel bar on the second sliding frame; the first sliding frame includes a first bending part, and the first bending part is installed on the side of the first sliding frame facing away from the steel bar, and the second sliding frame includes a second bending part, and the second bending part is installed on the side of the second sliding frame facing away from the steel bar, and the first bending part and the second bending part are respectively supported and installed at both ends of the fire retardant coating surface to clamp the fire retardant coating sample.

2. The multi-angle fire retardant coating combustion tester according to claim 1 is characterized in that: The fixing block is provided with a card slot, there are three first thermocouples, three card slots, and three probes. The three first thermocouples are respectively and correspondingly connected in the three card slots, and the three probes are respectively attached to one quarter of the temperature measuring surface, one half of the temperature measuring surface, and three quarters of the temperature measuring surface.

3. The multi-angle fire retardant coating combustion tester according to claim 1 is characterized in that: The multi-angle fire retardant coating combustion tester also includes a second thermocouple, and the nozzle device also includes a bracket, and the second thermocouple is detachably mounted on the bracket; the vertical moving device also includes a connecting block, the vertical axis is fixed on the connecting block, and the bracket is fixed on the connecting block, and the mounting block is fixedly connected to the vertical axis through the bracket and the connecting block; the second thermocouple includes a detection probe, and the detection probe is located above the nozzle mouth to detect the temperature of the flame at the nozzle mouth.

4. The multi-angle fire retardant coating combustion tester according to claim 1, characterized in that: The rotation angle of the nozzle member is 0-90°.

5. The multi-angle fire retardant coating combustion tester according to claim 1 is characterized in that: The multi-angle fire retardant coating combustion tester also includes a camera and a light source. A rotating shaft is arranged in the rotating arm, and the motor drives the rotating shaft to rotate to drive the rotating arm to rotate; the rotating device also includes a rotating frame extending along the width direction of the box body, and the rotating frame is fixed on the rotating arm and rotates synchronously with the rotating arm; the fire retardant coating sample also includes a side surface, which is connected between the temperature measuring surface and the fire retardant coating surface, and the camera and the light source are both installed on the rotating frame and are both facing the side surface.

6. The multi-angle fire retardant coating combustion tester according to claim 1, characterized in that: The rotation angle of the rotating arm is 0-90°, and the rotation angle of the fire retardant coating sample is also 0-90°.

7. The multi-angle fire retardant coating combustion tester according to claim 5, characterized in that: The multi-angle fire retardant coating combustion tester also includes a background plate, the fire retardant coating sample is located between the camera and the background plate, and the side projection is located on the background plate.

8. The multi-angle fire retardant coating combustion tester according to claim 1, characterized in that: The box body is provided with a smoke outlet and a ventilation hole.

9. The multi-angle fire retardant coating combustion tester according to claim 3, characterized in that: The box body is provided with a display screen, a first operation button and a second operation button. The first thermocouple and the second thermocouple are both communicatively connected to the display screen. The first operation button is used to operate the start and stop of the motor, and the second operation button is used to operate the start and stop of the linear motor.

10. The multi-angle fire retardant coating combustion tester according to claim 3, characterized in that: The connecting block is provided with a sleeve, the horizontal rod is sleeved in the sleeve, and the nozzle device and the vertical moving device are slidably arranged together on the horizontal rod through the sleeve.

11. The multi-angle fire retardant coating combustion tester according to claim 3, characterized in that: The measuring ranges of the first thermocouple and the second thermocouple are both 0-1100°C.

Images