Combustion chamber of flame spreading tester

Abstract

The utility model discloses a combustion chamber of a flame spreading tester, which belongs to the technical field of flame spreading testers and comprises a tester body and a sealing door, an installation cavity is arranged in the middle of the tester body, and a combustion chamber mechanism convenient to disassemble, assemble and maintain is arranged in the installation cavity. By arranging the combustion chamber mechanism and designing clamping grooves, clamping plates and mounting bolts, the combustion chamber mechanism can be conveniently mounted and dismounted, so that the process of maintaining and replacing parts is greatly simplified, the maintenance cost is reduced, the maintenance time is shortened, and the maintenance efficiency is improved. By arranging the flue gas treatment mechanism, flue gas generated by combustion can be efficiently treated, pollution to the environment is reduced, and accurate data support is also provided for testing through real-time monitoring of a thermocouple.

Description

Technical Field

[0001] The utility model relates to the technical field of flame spread testers, and in particular to a combustion chamber of a flame spread tester. Background Art

[0002] In the fields of materials science and fire safety assessment, a flame spread tester is a key device for testing the spread speed of materials and the development of fire in a fire. As the core component of the flame spread tester, the design and performance of the combustion chamber of the flame spread tester directly affect the accuracy and reliability of the test results.

[0003] In the existing combustion chamber of a flame spread tester, the internal heat insulation material is generally calcium silicate board, which is locked to the external frame by screw connection. During the experiment, problems such as thermal cracking, slag falling, screw thermal deformation, and the calcium silicate board connected by the screws falling off and loosening, resulting in smoke leakage, may occur.

[0004] Existing patent (Publication No.: CN211179682U), a combustion chamber of a flame spread tester, includes a combustion chamber cavity. An internal heat insulation board and a heat insulation board fixing frame are arranged in the combustion chamber cavity. The internal heat insulation board is arranged in the heat insulation board fixing frame. The heat insulation board fixing frame is an external frame, and the external cover frame is sleeved on the internal heat insulation board. The front end of the external cover frame is fixed on a fixing plate, and the fixing plate is fixedly connected with the combustion chamber cavity. Advantages: The combustion chamber of this flame spread tester uses a new type of heat insulation board with high temperature resistance, which is not easy to crack and break after being heated, has a long service life, and is convenient and simple to install; the socket fixing method is adopted to avoid the influence of screw heating on the test.

[0005] In view of the above problems, the existing patent gives a solution, but there are problems such as being inconvenient to quickly replace the heat insulation board inside the combustion chamber, being unable to protect the accidentally damaged heat insulation board, and the problem that the flue gas generated inside the existing combustion chamber is directly discharged without treatment, which will damage the environment.

[0006] Therefore, a combustion chamber of a flame spread tester is proposed. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a combustion chamber of a flame spread tester, which can solve the problems that the existing combustion chamber of a flame spread tester is inconvenient to quickly replace the heat insulation board inside the combustion chamber, unable to protect the accidentally damaged heat insulation board, and the problem that the flue gas generated inside the existing combustion chamber is directly discharged without treatment, which will damage the environment.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A combustion chamber of a flame spread tester, comprising a tester main body and a sealing door. An installation cavity is provided in the middle of the tester main body, and a combustion chamber mechanism convenient for disassembly and maintenance is arranged inside the installation cavity. A flue gas treatment mechanism matched with the installation cavity is arranged on the top of the tester main body;

[0009] The combustion chamber mechanism includes a frame body, fixed columns, mounting plates, a first limiting strip, a heat insulation plate, card slots, clamping plates and mounting bolts. The frame body is arranged inside the installation cavity. Four fixed columns are arranged at four corners of the frame body. A plurality of mounting plates are respectively fixedly connected to both sides of the fixed columns. The first limiting strip is arranged on the side wall of the mounting plate. The heat insulation plate is arranged between the first limiting strip and the frame body. Four card slots are respectively opened at four corners of the frame body. The clamping plates are arranged inside the card slots. A plurality of mounting bolts are respectively movably arranged at both ends of the clamping plates. A plurality of mounting bolts are respectively threadedly connected to the fixed columns and the tester main body.

[0010] Preferably, the flue gas treatment mechanism includes a chimney, a thermocouple, a horizontal pipe, a top cover, a treatment tank, a smoke inlet pipe, a smoke outlet pipe and a filter element. The chimney is arranged on the top of the tester main body and is connected to the frame body in a penetrating manner. The thermocouple is installed on the side wall of the chimney. The horizontal pipe is arranged on the top of the chimney. The top cover is arranged at one end of the horizontal pipe. The treatment tank is arranged on the top of the tester main body and is connected to the top cover in a penetrating manner. A plurality of smoke inlet pipes are arranged at the bottom of the top cover and extend to the bottom of the treatment tank. The smoke outlet pipe is arranged on the top of the treatment tank. The filter element is arranged on the top of the smoke outlet pipe.

[0011] Preferably, a second limiting strip is arranged on the side wall of the mounting plate, and an explosion-proof metal net is arranged between the first limiting strip and the second limiting strip.

[0012] Preferably, a glass fiber blanket is arranged on the side wall of the tester main body. The side wall of the glass fiber blanket contacts the sealing door. The glass fiber blanket is used to increase the heat preservation effect of the cavity.

[0013] Preferably, a partition plate is arranged on the side wall of the explosion-proof metal net, and the partition plate is located at the bottom of the cavity.

[0014] Preferably, a top cover is arranged on the top of the top cover, and a metal screen is arranged inside the top cover.

[0015] Preferably, a spiral blade is arranged on the inner wall of the smoke inlet pipe.

[0016] Preferably, a transparent observation port is arranged on the side wall of the treatment tank, and a scale is arranged on the side wall of the transparent observation port.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. The present application is provided with a combustion chamber mechanism. In this process, the combustion chamber mechanism is the core part of the tester. The frame body is arranged in the installation cavity, and four fixing columns are stably distributed at the corners of the frame body. The mounting plates are fixed on both sides of the fixing columns, which increases the stability of the overall structure. The heat insulation plate is arranged between the first limiting strip and the frame body, effectively isolating the heat generated by combustion, protecting other parts of the tester main body from the influence of high temperature. At the same time, it is tightly connected to the fixing columns and the tester main body through mounting bolts to ensure stability and safety during use. The heat insulation plate is made of aluminosilicate fiber board. Its excellent high-temperature resistance can ensure that it will not deform or be damaged due to high temperature during the test; its good heat insulation performance can effectively reduce the transfer of heat to the outside of the test chamber; at the same time, its fireproof performance can also ensure the safety of the test process. Through the design of the clamping groove, clamping plate and mounting bolts, the combustion chamber mechanism can be conveniently installed and disassembled, which greatly simplifies the process of maintaining and replacing components, and reduces the maintenance cost and time.

[0019] 2. The present application is provided with a flue gas treatment mechanism. In this process, during combustion, the generated flue gas is discharged through the exhaust chimney. The exhaust chimney is connected to the frame body in a penetrating manner to ensure that the flue gas can be discharged smoothly. The thermocouple is installed on the side wall of the exhaust chimney to monitor the flue gas temperature in real time, providing important data for the test. The flue gas further enters the top cover through the horizontal pipe, and then is guided to the bottom of the treatment tank by the smoke inlet pipe. Specific adsorption or treatment materials are installed inside the treatment tank to purify harmful substances in the flue gas. Finally, the treated flue gas is discharged through the smoke outlet pipe, and the filter element further filters the flue gas at the top of the smoke outlet pipe to ensure that its emission meets the environmental protection standards. Through the flue gas treatment mechanism, this tester can efficiently treat the flue gas generated by combustion, reduce environmental pollution, and the real-time monitoring of the thermocouple also provides accurate data support for the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is the overall structural view of the present invention;

[0022] Figure 2 is the left view of the present invention;

[0023] Figure 3 is the present invention Figure 2 is the three-dimensional sectional view at A-A in the present invention;

[0024] Figure 4 This is the structural view of the combustion chamber mechanism of the present utility model;

[0025] Figure 5 This is the disassembled structural view of the combustion chamber mechanism of the present utility model;

[0026] Figure 6 For the present utility model Figure 5 The enlarged view of part A in;

[0027] Figure 7 This is the structural view of the installation cavity of the present utility model;

[0028] Figure 8 This is the structural view of the flue gas treatment mechanism of the present utility model.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Tester main body; 2. Sealing door; 3. Installation cavity; 4. Combustion chamber mechanism; 5. Flue gas treatment mechanism; 41. Frame body; 42. Fixed column; 43. Installation plate; 44. First limiting strip; 45. Heat insulation plate; 46. Card slot; 47. Card board; 48. Installation bolt; 51. Exhaust chimney; 52. Thermocouple; 53. Horizontal pipe; 54. Top cover; 55. Treatment tank; 56. Inlet smoke pipe; 57. Outlet smoke pipe; 58. Filter element; 6. Second limiting strip; 7. Explosion-proof metal net; 8. Glass fiber blanket; 9. Partition board; 10. Top cover; 11. Metal screen; 12. Spiral blade; 13. Transparent observation port. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1 to 8 , the present utility model provides a technical solution:

[0033] A combustion chamber of a flame spread tester includes a tester main body 1 and a sealing door 2. An installation cavity 3 is arranged in the middle of the tester main body 1. A combustion chamber mechanism 4 that is convenient for disassembly, installation and maintenance is arranged inside the installation cavity 3. A flue gas treatment mechanism 5 that cooperates with the installation cavity 3 is arranged on the top of the tester main body 1;

[0034] The combustion chamber mechanism 4 includes a frame body 41, fixed columns 42, mounting plates 43, a first limiting strip 44, a heat insulation plate 45, card slots 46, a clamping plate 47, and mounting bolts 48. The frame body 41 is disposed inside the installation cavity 3. Four fixed columns 42 are disposed at the four corners of the frame body 41. A plurality of mounting plates 43 are respectively fixedly connected to both sides of the fixed columns 42. The first limiting strip 44 is disposed on the side wall of the mounting plate 43. The heat insulation plate 45 is disposed between the first limiting strip 44 and the frame body 41. Four card slots 46 are respectively opened at the four corners of the frame body 41. The clamping plate 47 is disposed inside the card slots 46. A plurality of mounting bolts 48 are respectively movably disposed at both ends of the clamping plate 47. A plurality of mounting bolts 48 are respectively threadedly connected to the fixed columns 42 and the tester main body 1.

[0035] Specifically, as Figure 6 shown, a second limiting strip 6 is disposed on the side wall of the mounting plate 43. An explosion-proof metal net 7 is disposed between the first limiting strip 44 and the second limiting strip 6.

[0036] Specifically, as Figure 7 shown, a fiberglass blanket 8 is disposed on the side wall of the tester main body 1. The side wall of the fiberglass blanket 8 contacts the sealing door 2. The fiberglass blanket 8 is used to enhance the heat preservation effect of the cavity.

[0037] Specifically, as Figure 5 shown, a partition plate 9 is disposed on the side wall of the explosion-proof metal net 7. The partition plate 9 is located at the bottom of the cavity.

[0038] First, the frame body 41 is disposed in the installation cavity 3. Four fixed columns 42 are stably distributed at the corners of the frame body 41. The mounting plates 43 are fixed to both sides of the fixed columns 42, increasing the stability of the overall structure. The heat insulation plate 45 is disposed between the first limiting strip 44 and the frame body 41, effectively isolating the heat generated by combustion and protecting other parts of the tester main body 1 from the high temperature. At the same time, through the tight connection of the mounting bolts 48 with the fixed columns 42 and the tester main body 1, the stability and safety during use are ensured. The heat insulation plate 45 is made of aluminosilicate fiberboard. Its excellent high-temperature resistance can ensure that it will not deform or be damaged due to high temperature during the test; its good heat insulation performance can effectively reduce the heat transfer to the outside of the test chamber; at the same time, its fireproof performance can also ensure the safety of the test process. Through the design of the card slots 46, the clamping plate 47, and the mounting bolts 48, the combustion chamber mechanism 4 can be conveniently installed and disassembled, which greatly simplifies the process of maintenance and component replacement, reducing the maintenance cost and time. At the same time, the explosion-proof metal net 7 effectively prevents the heat insulation plate 45 from being damaged and bursting due to external impact. The fiberglass blanket 8 is in close contact with the sealing door 2. The fiberglass blanket 8 is an excellent heat preservation material, which can effectively reduce the heat dissipation from the combustion chamber to the outside, improving the heat preservation effect of the cavity. The partition plate 9 prevents the flying objects or residues generated during combustion from entering the bottom or other sensitive areas of the combustion chamber, thus keeping the combustion chamber clean and safe.

[0039] Specifically, as Figure 8 shown, the flue gas treatment mechanism 5 includes a chimney 51, a thermocouple 52, a horizontal pipe 53, a top cover 54, a treatment tank 55, a smoke inlet pipe 56, a smoke outlet pipe 57 and a filter element 58. The chimney 51 is arranged on the top of the tester main body 1 and is connected to the frame body 41 in a penetrating manner. The thermocouple 52 is installed on the side wall of the chimney 51. The horizontal pipe 53 is arranged on the top of the chimney 51. The top cover 54 is arranged at one end of the horizontal pipe 53. The treatment tank 55 is arranged on the top of the tester main body 1 and is connected to the top cover 54 in a penetrating manner. A plurality of smoke inlet pipes 56 are arranged at the bottom of the top cover 54 and extend to the bottom of the treatment tank 55. The smoke outlet pipe 57 is arranged on the top of the treatment tank 55. The filter element 58 is arranged on the top of the smoke outlet pipe 57.

[0040] Specifically, as Figure 8 shown, a top cover 10 is arranged on the top of the top cover 54, and a metal screen 11 is arranged inside the top cover 54.

[0041] Specifically, as Figure 8 shown, a spiral blade 12 is arranged on the inner wall of the smoke inlet pipe 56.

[0042] Specifically, as Figure 8 shown, a transparent observation port 13 is arranged on the side wall of the treatment tank 55, and scales are arranged on the side wall of the transparent observation port 13.

[0043] During the combustion process, the generated flue gas is discharged through the exhaust chimney 51. The exhaust chimney 51 is connected to the frame body 41 in a penetrating manner to ensure the smooth discharge of the flue gas. The thermocouple 52 is installed on the side wall of the exhaust chimney 51 to monitor the temperature of the flue gas in real time and provide important data for the test. The flue gas further enters the top cover 54 through the horizontal pipe 53 and is then guided to the bottom of the treatment tank 55 by the smoke inlet pipe 56. Specific adsorption or treatment materials are installed inside the treatment tank 55 to purify harmful substances in the flue gas. Finally, the treated flue gas is discharged through the smoke outlet pipe 57. The filter element 58 further filters the flue gas at the top of the smoke outlet pipe 57 to ensure that its emission meets environmental protection standards. Through the flue gas treatment mechanism 5, the tester can efficiently treat the flue gas generated by combustion and reduce environmental pollution. The real-time monitoring of the thermocouple 52 also provides accurate data support for the test. At the same time, a top cover 10 is provided at the top of the top cover 54, which provides a convenient access path for the testers to check, maintain or replace the metal screen 11 inside the top cover 54. The main function of the metal screen 11 is to filter larger particulate matter generated during the combustion process and prevent it from entering the subsequent flue gas treatment system, thereby ensuring the normal operation of the treatment system and extending its service life. The spiral blade 12 provided on the inner wall of the smoke inlet pipe 56 mainly serves to increase the flow resistance and path length of the flue gas in the smoke inlet pipe 56, thereby extending the residence time of the flue gas in the smoke inlet pipe 56. The transparent observation port 13 provided on the door wall of the treatment tank 55 provides an intuitive observation window for the testers to facilitate their real-time monitoring of the situation inside the treatment tank 55, such as the degree of pollution of the filter element 58 and the liquid level of the treatment liquid.

[0044] By adopting the above technical solutions, the problems existing in the combustion chamber of the existing flame spread tester are solved, including the problem that it is not convenient to quickly replace the heat insulation board 45 inside the combustion chamber, the problem that the accidentally damaged heat insulation board 45 cannot be protected, and the problem that the flue gas generated inside the existing combustion chamber is directly discharged without treatment, which will cause damage to the environment.

[0045] Working principle: When this application is in use, first, the frame body 41 is arranged in the installation cavity 3. Four fixing columns 42 are stably distributed at the corners of the frame body 41. The mounting plate 43 is fixed on both sides of the fixing columns 42, which increases the stability of the overall structure. The heat insulation plate 45 is arranged between the limiting strip 44 and the frame body 41, effectively isolating the heat generated by combustion and protecting other parts of the tester main body 1 from the influence of high temperature. At the same time, it is tightly connected to the fixing columns 42 and the tester main body 1 through the mounting bolts 48 to ensure stability and safety during use. The heat insulation plate 45 is made of aluminosilicate fiber board. Its excellent high-temperature resistance can ensure that it will not deform or be damaged due to high temperature during the test; its good heat insulation performance can effectively reduce the transfer of heat to the outside of the test chamber; at the same time, its fireproof performance can also ensure the safety of the test process. Through the design of the card slot 46, the card plate 47 and the mounting bolt 48, the combustion chamber mechanism 4 can be conveniently installed and disassembled, which greatly simplifies the process of maintaining and replacing components, reduces the maintenance cost and time. During the combustion process, the generated flue gas is discharged through the exhaust chimney 51. The exhaust chimney 51 is connected to the frame body 41 in a through manner to ensure that the flue gas can be discharged smoothly. The thermocouple 52 is installed on the side wall of the exhaust chimney 51 to monitor the temperature of the flue gas in real time and provide important data for the test. The flue gas further enters the top cover 54 through the horizontal pipe 53, and then is guided to the bottom of the treatment tank 55 by the smoke inlet pipe 56. Specific adsorption or treatment materials are installed inside the treatment tank 55 to purify harmful substances in the flue gas. Finally, the treated flue gas is discharged through the smoke outlet pipe 57. The filter element 58 further filters the flue gas at the top of the smoke outlet pipe 57 to ensure that its emission meets the environmental protection standards.

[0046] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flame spread tester combustion chamber, comprising a tester body (1) and a sealing door (2), characterized in that: The middle part of the tester body (1) is provided with an installation cavity (3), the interior of the installation cavity (3) is provided with a combustion chamber mechanism (4) which is convenient for disassembly and maintenance, and the top of the tester body (1) is provided with a smoke treatment mechanism (5) which matches the installation cavity (3); The combustion chamber mechanism (4) comprises a frame (41), a fixing column (42), a mounting plate (43), a limiting strip (44), a heat insulation plate (45), a clamping groove (46), a clamping plate (47) and a mounting bolt (48); the frame (41) is arranged inside the mounting cavity (3); four fixing columns (42) are arranged at four corners of the frame (41); a plurality of mounting plates (43) are respectively fixedly connected to two sides of the fixing column (42); the limiting strip (44) is arranged at the bottom of the mounting cavity (3); The heat insulating plate (45) is arranged on the side wall of the mounting plate (43), the heat insulating plate (45) is arranged between the limiting strip (44) and the frame (41), the four card slots (46) are respectively opened at the four corners of the frame (41), the card plate (47) is arranged inside the card slot (46), and the plurality of mounting bolts (48) are respectively movably arranged at the two ends of the card plate (47), and the plurality of mounting bolts (48) are respectively threadedly connected to the fixing column (42) and the tester body (1).

2. A flame spread tester combustion chamber according to claim 1, characterized in that: The smoke treatment mechanism (5) comprises a smoke exhaust chimney (51), a thermocouple (52), a transverse pipe (53), a top cover (54), a treatment tank (55), a smoke inlet pipe (56), a smoke outlet pipe (57) and a filter element (58); the smoke exhaust chimney (51) is arranged on the top of the tester body (1) and is connected to the frame (41); the thermocouple (52) is installed on the side wall of the smoke exhaust chimney (51); the transverse pipe (53) is arranged on the smoke exhaust chimney (51), the top cover (54) is arranged at one end of the horizontal pipe (53), the processing tank (55) is arranged at the top of the tester body (1) and is connected with the top cover (54), a plurality of smoke inlet pipes (56) are arranged at the bottom of the top cover (54) and extend to the bottom of the processing tank (55), the smoke outlet pipe (57) is arranged at the top of the processing tank (55), and the filter element (58) is arranged at the top of the smoke outlet pipe (57).

3. The flame spread tester combustion chamber according to claim 1, characterized in that: A second limiting strip (6) is arranged on the side wall of the mounting plate (43), and an explosion-proof metal mesh (7) is arranged between the first limiting strip (44) and the second limiting strip (6).

4. The flame spread tester combustion chamber according to claim 1, characterized in that: A glass fiber blanket (8) is provided on the side wall of the tester body (1), the side wall of the glass fiber blanket (8) is in contact with the sealing door (2), and the glass fiber blanket (8) is used to increase the heat preservation effect of the cavity.

5. The flame spread tester combustion chamber according to claim 3, characterized in that: A partition plate (9) is arranged on the side wall of the explosion-proof metal net (7), and the partition plate (9) is located at the bottom of the cavity.

6. A flame spread tester combustion chamber according to claim 2, characterized in that: A top cover (10) is arranged on the top of the top cover (54), and a metal screen (11) is arranged inside the top cover (54).

7. The flame spread tester combustion chamber according to claim 2, characterized in that: The inner wall of the smoke inlet pipe (56) is provided with spiral blades (12).

8. The combustion chamber of the flame spread tester according to claim 2, characterized in that: A transparent observation port (13) is provided on the side wall of the processing tank (55), and a scale is provided on the side wall of the transparent observation port (13).

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