Indoor test device for simulating spreading of surface fire

Abstract

The invention belongs to the technical field of fire simulation devices, and particularly relates to an indoor test device for simulating surface fire spreading, which comprises a fixed base, the angle adjusting mechanism is fixedly arranged at one end of the top of the fixed base, the angle adjusting mechanism is further fixedly connected with one end of the bearing base, and the angle adjusting mechanism is used for adjusting the inclination angle of the bearing base; the surface fire simulation mechanism is arranged on the bearing base; the data measuring mechanism is arranged on the bearing base, and the data measuring mechanism is used for collecting combustion temperature data of the earth surface fire simulation mechanism and transmitting the combustion temperature data to the processor; the driving mechanism is fixedly arranged at the other end of the top of the fixed base, the driving end of the driving mechanism is fixedly connected with the top of the end, away from the angle adjusting mechanism, of the bearing base, and the driving mechanism is used for providing power output for angle adjustment of the bearing base. According to the invention, the occurrence and spreading mechanism of the surface fire can be effectively simulated and studied.

Description

Technical Field

[0001] The invention belongs to the technical field of fire simulation devices, and in particular relates to an indoor test device for simulating the spread of surface fire. Background Art

[0002] The study of forest fires began in the middle of the last century. Surface fires, as the main form of forest fires, have become the primary object of many fire science studies. The research methods are mainly divided into two types: field burning tests and indoor burning tests. Currently, there are more studies on indoor burning tests. Compared with field burning tests, the test conditions of indoor burning tests are highly controllable, and the test process is relatively closed, less affected by the environment, the measurement data is relatively accurate and reliable, and the test results are repeatable. However, indoor tests also have limitations. There is usually a deviation between their results and the actual situation in the field. When applying the test results to actual predictions, further confirmation by field tests is required.

[0003] Therefore, it is necessary to design an indoor test device for simulating the spread of surface fire to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an indoor test device for simulating the spread of surface fire, so as to solve the above-mentioned problems and achieve the purpose of effectively simulating and studying surface fire.

[0005] To achieve the above object, the present invention provides the following solution: an indoor test device for simulating the spread of surface fire, comprising:

[0006] Fixed base;

[0007] An angle adjustment mechanism, fixedly arranged at one end of the top of the fixed base, the angle adjustment mechanism is also fixedly connected to one end of the bearing base, and the angle adjustment mechanism is used to adjust the inclination angle of the bearing base;

[0008] A surface fire simulation mechanism is arranged on the bearing base;

[0009] A data measuring mechanism, disposed on the bearing base, for collecting combustion temperature data of the surface fire simulation mechanism and transmitting the combustion temperature data to a processor;

[0010] The driving mechanism is fixedly arranged at the other end of the top of the fixed base. The driving end of the driving mechanism is fixedly connected to the top of one end of the supporting base away from the angle adjustment mechanism. The driving mechanism is used to provide power output for the angle adjustment of the supporting base.

[0011] Preferably, the fixed base includes two first bases, the two first bases have the same structure, the supporting base includes two second bases, the two second bases have the same structure, and the two first bases and the two second bases are fixedly connected via a connecting part.

[0012] Preferably, the first base includes a plurality of first transverse tubes and a plurality of first longitudinal tubes, the plurality of first transverse tubes are arranged in parallel and at equal intervals and are located in the same horizontal plane, the plurality of first longitudinal tubes are arranged in parallel and at equal intervals and are located in the same horizontal plane, and the first longitudinal tubes are perpendicular to the first transverse tubes and are fixedly connected to the top ends of the first transverse tubes.

[0013] Preferably, the second base includes a plurality of second transverse tubes and a plurality of second longitudinal tubes, the plurality of second transverse tubes are arranged in parallel and at equal intervals and are located in the same horizontal plane, the plurality of second longitudinal tubes are arranged in parallel and at equal intervals and are located in the same horizontal plane, and the second longitudinal tubes are perpendicular to the second transverse tubes and are fixedly connected to the top ends of the second transverse tubes.

[0014] Preferably, the connecting portion includes a fixing plate, one end of the fixing plate is fixedly connected to the first transverse tube and / or the second transverse tube via a fixing bolt, and the other end of the fixing plate is fixedly connected to another first transverse tube and / or the second transverse tube via another fixing bolt.

[0015] Preferably, the angle adjustment mechanism includes a first fixed block, the first fixed block is fixedly connected to the first base, the first fixed block is fixedly connected to one end of the hinge, the other end of the hinge is fixedly connected to the second fixed block, and the second fixed block is fixedly connected to the second base.

[0016] Preferably, the surface fire simulation mechanism includes a steel plate, the steel plate is fixedly connected to the top of the second base, a cement board is arranged on the top of the steel plate, an asbestos layer is arranged on the top of the cement board, a plurality of fixing holes are opened on the cement board and the asbestos layer, the plurality of fixing holes are arranged at equal intervals, and the data measurement mechanism is arranged in the fixing holes.

[0017] Preferably, the data measurement mechanism comprises a plurality of thermocouples, the thermocouples correspond to the fixing holes one by one and are detachably mounted in the fixing holes, and the thermocouples are electrically connected to the processor.

[0018] Preferably, the driving mechanism includes two vertically arranged support rods, the bottom ends of the support rods are fixedly connected to the fixed base, the top ends of the two support rods are commonly fixedly connected to a horizontally arranged cross beam, the two ends of the top of the cross beam are respectively fixedly connected to an electric hoist, the free end of the electric hoist is fixedly connected to a fan-shaped plate, and the fan-shaped plate is fixedly connected to the top of the supporting base.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The present invention can simulate the situation when different combustibles on the surface have a fire by means of the surface fire simulation mechanism, thereby widening the test range of the device; the fixed base can ensure the stability of the entire test device during the test; the driving mechanism and the angle adjustment mechanism work together to adjust the angle between the bearing base and the fixed base, so as to achieve the adjustment of different inclination angles of the surface fire simulation mechanism, and simulate the spread of fire on different slopes of the surface; the data measurement mechanism can collect fire temperature data during the test, thereby providing a data basis for studying the mechanism of surface fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0022] Figure 1 It is an overall schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0024] Figure 3 It is a schematic diagram of the fixed base and the bearing base of the present invention;

[0025] Figure 4 for Figure 3 A partial enlarged view of B.

[0026] Among them, 1. the first horizontal tube; 2. the first longitudinal tube; 3. the fixing plate; 4. the fixing bolts; 5. the connecting bolts; 6. the second horizontal tube; 7. the second longitudinal tube; 8. the first reinforcing rod; 9. the second reinforcing rod; 10. the supporting foot; 11. the first fixing block; 12. the second fixing block; 13. the hinge; 14. the supporting rod; 15. the crossbeam; 16. the diagonal brace; 17. the electric hoist; 18. the fan-shaped plate; 19. the limiting longitudinal rod; 20. the limiting horizontal rod; 21. the thermocouple; 22. the steel plate; 23. the cement board; 24. the asbestos layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1 to 4 As shown, the present invention provides an indoor test device for simulating the spread of surface fire, comprising

[0030] Fixed base;

[0031] An angle adjustment mechanism is fixedly arranged at one end of the top of the fixed base, and the angle adjustment mechanism is also fixedly connected to one end of the bearing base, and the angle adjustment mechanism is used to adjust the inclination angle of the bearing base;

[0032] A surface fire simulation mechanism is arranged on a bearing base;

[0033] A data measuring mechanism is arranged on the bearing base, and is used to collect combustion temperature data of the surface fire simulation mechanism and transmit the combustion temperature data to the processor;

[0034] The driving mechanism is fixedly arranged at the other end of the top of the fixed base. The driving end of the driving mechanism is fixedly connected to the top of one end of the supporting base away from the angle adjustment mechanism. The driving mechanism is used to provide power output for the angle adjustment of the supporting base.

[0035] The surface fire simulation mechanism is designed to simulate the situation when different combustibles on the surface catch fire, and the test range of the device is widened. The fixed base is designed to ensure the stability of the entire test device during the test. The driving mechanism and the angle adjustment mechanism work together to adjust the angle between the bearing base and the fixed base to achieve the adjustment of different inclination angles of the surface fire simulation mechanism and simulate the spread of fire on different slopes of the surface. The data measurement mechanism is designed to collect fire temperature data during the test and provide a data basis for studying the mechanism of surface fire.

[0036] According to a further optimized solution, the fixed base includes two first bases, the two first bases have the same structure, the supporting base includes two second bases, the two second bases have the same structure, and the two first bases and the two second bases are fixedly connected via a connecting portion.

[0037] A further optimized solution is that the first base includes a plurality of first transverse tubes 1 and a plurality of first longitudinal tubes 2, the plurality of first transverse tubes 1 are arranged in parallel and at equal intervals and are located in the same horizontal plane, the plurality of first longitudinal tubes 2 are arranged in parallel and at equal intervals and are located in the same horizontal plane, and the first longitudinal tubes 2 are perpendicular to the first transverse tubes 1 and are fixedly connected to the top ends of the first transverse tubes 1.

[0038] A further optimized solution is that the second base includes a plurality of second transverse tubes 6 and a plurality of second longitudinal tubes 7, the plurality of second transverse tubes 6 are arranged in parallel and at equal intervals and are located in the same horizontal plane, the plurality of second longitudinal tubes 7 are arranged in parallel and at equal intervals and are located in the same horizontal plane, and the second longitudinal tubes 7 are perpendicular to the second transverse tubes 6 and are fixedly connected to the top ends of the second transverse tubes 6.

[0039] According to a further optimized solution, the connection portion includes a fixing plate 3, one end of the fixing plate 3 is fixedly connected to the first cross tube 1 and / or the second cross tube 6 via a fixing bolt 4, and the other end of the fixing plate 3 is fixedly connected to another first cross tube 1 and / or the second cross tube 6 via another fixing bolt 4.

[0040] Furthermore, a first reinforcing rod 8 is arranged in the middle between two adjacent first transverse tubes 1 of the first base, and the two first transverse tubes 1 close to each other of the two first bases are also fixedly connected by a plurality of first connecting bolts 5, and the plurality of first connecting bolts 5 are arranged at equal intervals along the length direction of the first transverse tube 1.

[0041] Furthermore, four supporting legs 10 are provided at the bottom end of the first base, and the four supporting legs 10 are respectively provided at the corners of the first base.

[0042] Furthermore, a second reinforcing rod 9 is arranged in the middle between two adjacent second transverse tubes 6 of the second base, and the two second transverse tubes 6 close to each other of the two second bases are also fixedly connected by a plurality of first connecting bolts 5, and the plurality of first connecting bolts 5 are arranged at equal intervals along the length direction of the second transverse tube 6.

[0043] According to a further optimized solution, the angle adjustment mechanism includes a first fixed block 11, which is fixedly connected to the first base. The first fixed block 11 is fixedly connected to one end of a hinge 13, and the other end of the hinge 13 is fixedly connected to a second fixed block 12, and the second fixed block 12 is fixedly connected to the second base.

[0044] A further optimized solution is that the surface fire simulation mechanism includes a steel plate 22, which is fixedly connected to the top of the second base, a cement plate 23 is arranged on the top of the steel plate 22, an asbestos layer 24 is arranged on the top of the cement plate 23, and a plurality of fixing holes are opened on the cement plate 23 and the asbestos layer 24, and the plurality of fixing holes are arranged at equal intervals, and the data measurement mechanism is arranged in the fixing hole.

[0045] Furthermore, the top ends of two sides of the steel plate 22 are fixedly connected to the limiting longitudinal rods 19, and the top ends of the other two sides are fixedly connected to the limiting transverse rods 20. The two limiting longitudinal rods 19 and the two limiting transverse rods 20 form a limiting frame to ensure that the cement board 23 and the asbestos layer 24 are stably placed on the steel plate 22 without sliding.

[0046] According to a further optimized solution, the data measurement mechanism includes a plurality of thermocouples 21, the thermocouples 21 correspond to the fixing holes one by one and can be detachably installed in the fixing holes, and the thermocouples 21 are electrically connected to the processor.

[0047] A further optimized solution is that the driving mechanism includes two vertically arranged support rods 14, the bottom ends of the support rods 14 are fixedly connected to the fixed base, the tops of the two support rods 14 are commonly fixedly connected to a horizontally arranged cross beam 15, the two ends of the top of the cross beam 15 are respectively fixedly connected to an electric hoist 17, the free end of the electric hoist 17 is fixedly connected to a fan-shaped plate 18, and the fan-shaped plate 18 is fixedly connected to the top of the supporting base.

[0048] Furthermore, one end of an oblique support rod 16 is fixedly connected to both sides of the bottom end of the support rod 14, and the other end of the oblique support rod 16 is fixedly connected to the top end of the fixed base. The oblique support rod 16 improves the connection stability between the support rod 14 and the fixed base.

[0049] The test process of the device of the present invention is as follows:

[0050] The combustibles with configured moisture content (soak or spray the combustibles to absorb water, and use a moisture content meter to detect the real-time moisture content irregularly, and the configuration is completed when the moisture content reaches the test set level) are evenly spread in the way of natural falling of fallen leaves; after the combustibles are laid on the asbestos layer 24, 5 points are randomly selected to measure the bed height, and the average value is taken as the bed height of the field test; the slope of the bearing base is adjusted, the doors and windows are closed, the interference of air flow is eliminated, and the test time, ambient temperature, relative humidity of the air and other parameters are recorded; the combustibles are ignited by wire ignition, and when the fire spreads to a quasi-steady state, the current flame height, flame length, and flame depth information are measured; during the combustion process, the thermocouple 21 is used to monitor and record the temperature data in real time. When the combustibles are completely burned (no open flame, and smoldering is basically over), the remaining combustibles on the asbestos layer 24 are collected and weighed.

[0051] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do 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 therefore should not be understood as a limitation on the present invention.

[0052] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. An indoor test device for simulating the spread of surface fire, It is characterized in that include Fixed base; An angle adjustment mechanism, fixedly arranged at one end of the top of the fixed base, the angle adjustment mechanism is also fixedly connected to one end of the bearing base, and the angle adjustment mechanism is used to adjust the inclination angle of the bearing base; A surface fire simulation mechanism is arranged on the bearing base; A data measuring mechanism, disposed on the bearing base, for collecting combustion temperature data of the surface fire simulation mechanism and transmitting the combustion temperature data to a processor; The driving mechanism is fixedly arranged at the other end of the top of the fixed base. The driving end of the driving mechanism is fixedly connected to the top of one end of the supporting base away from the angle adjustment mechanism. The driving mechanism is used to provide power output for the angle adjustment of the supporting base.

2. An indoor test device for simulating the spread of surface fire according to claim 1, It is characterized in that The fixed base includes two first bases, the two first bases have the same structure, the supporting base includes two second bases, the two second bases have the same structure, and the two first bases and the two second bases are fixedly connected via a connecting portion.

3. An indoor test device for simulating the spread of surface fire according to claim 2, It is characterized in that The first base comprises a plurality of first transverse tubes (1) and a plurality of first longitudinal tubes (2); the plurality of first transverse tubes (1) are arranged in parallel and at equal intervals and are located in the same horizontal plane; the plurality of first longitudinal tubes (2) are arranged in parallel and at equal intervals and are located in the same horizontal plane; the first longitudinal tubes (2) are perpendicular to the first transverse tubes (1) and are fixedly connected to the top ends of the first transverse tubes (1).

4. An indoor test device for simulating the spread of surface fire according to claim 3, It is characterized in that The second base comprises a plurality of second transverse tubes (6) and a plurality of second longitudinal tubes (7); the plurality of second transverse tubes (6) are arranged in parallel and at equal intervals and are located in the same horizontal plane; the plurality of second longitudinal tubes (7) are arranged in parallel and at equal intervals and are located in the same horizontal plane; the second longitudinal tubes (7) are perpendicular to the second transverse tubes (6) and are fixedly connected to the top ends of the second transverse tubes (6).

5. An indoor test device for simulating the spread of surface fire according to claim 4, It is characterized in that The connecting portion comprises a fixing plate (3), one end of the fixing plate (3) being fixedly connected to the first transverse tube (1) and / or the second transverse tube (6) via a fixing bolt (4), and the other end of the fixing plate (3) being fixedly connected to another first transverse tube (1) and / or the second transverse tube (6) via another fixing bolt (4).

6. An indoor test device for simulating the spread of surface fire according to claim 2, It is characterized in that The angle adjustment mechanism comprises a first fixed block (11), the first fixed block (11) is fixedly connected to the first base, the first fixed block (11) is fixedly connected to one end of a hinge (13), the other end of the hinge (13) is fixedly connected to a second fixed block (12), and the second fixed block (12) is fixedly connected to the second base.

7. An indoor test device for simulating the spread of surface fire according to claim 2, It is characterized in that The surface fire simulation mechanism comprises a steel plate (22), the steel plate (22) is fixedly connected to the top of the second base, a cement plate (23) is arranged on the top of the steel plate (22), an asbestos layer (24) is arranged on the top of the cement plate (23), a plurality of fixing holes are opened on the cement plate (23) and the asbestos layer (24), the plurality of fixing holes are arranged at equal intervals, and the data measurement mechanism is arranged in the fixing holes.

8. An indoor test device for simulating the spread of surface fire according to claim 7, It is characterized in that The data measurement mechanism comprises a plurality of thermocouples (21), the thermocouples (21) corresponding to the fixing holes one by one and being detachably mounted in the fixing holes, and the thermocouples (21) being electrically connected to the processor.

9. An indoor test device for simulating the spread of surface fire according to claim 1, It is characterized in that The driving mechanism comprises two vertically arranged support rods (14), the bottom ends of the support rods (14) are fixedly connected to the fixed base, the top ends of the two support rods (14) are commonly fixedly connected to a horizontally arranged crossbeam (15), the top ends of the crossbeam (15) are respectively fixedly connected to electric hoists (17), the free ends of the electric hoists (17) are fixedly connected to a fan-shaped plate (18), and the fan-shaped plate (18) is fixedly connected to the top end of the bearing base.

Images