Fire resistance detection device for fire-resistant air pipe

Abstract

The invention relates to the technical field of building material testing, in particular to a fire resistance detection device for a fire-resistant air duct, which comprises a base, two groups of fans fixedly connected to the top end of the base, an air storage tank arranged between the two groups of fans, a first test tube arranged at one end of each fan, and a second test tube arranged at one end of each fan. Combustion furnaces are arranged at the ends, away from the fan, of the first test tube and the second test tube. Through cooperation of the gas storage tank and other parts, the environment of the fire-resistant air pipe under the two conditions of external fire and internal and external fire is simulated, and through cooperation of the external thermometer and the intelligent infrared camera, the temperature difference of the fire-resistant air pipe inside and outside the combustion furnace is detected so as to check the heat insulation property and integrity of the fire-resistant air pipe. Whether the internal pressure of the fire-resistant air pipe is stable or not is detected through the cooperation of the fan and the sealing block, and whether a gap exists between the first test pipe and the second test pipe or not is checked through the cooperation of the fan and the air storage tank, so that the checking steps are simplified, the checking procedure is optimized, and the detection range is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of building material testing, and in particular to a fire resistance performance detection device for a fire resistance air duct. Background Art

[0002] Air ducts are metal or non-metal pipes used in ventilation and air conditioning engineering for industrial and civil buildings. They are a kind of municipal infrastructure to allow air to circulate and reduce the concentration of harmful gases. In the production and manufacturing of air ducts, it is necessary to detect the air leakage to ensure the safety of later use. Usually, the air duct is installed between the combustion furnace and the exhaust detection part. The exhaust detection part is used to exhaust the hot air in the combustion furnace through the ventilation duct, and the fire resistance test is carried out according to the GB / T17428-2009 standard.

[0003] With the enhancement of people's fire awareness, the fire resistance performance detection devices of fire-resistant air ducts in the past can hardly meet people's requirements for fire resistance testing. People need a detection device with stronger performance and better ability to reflect the actual fire situation to detect the air ducts. Summary of the invention

[0004] The purpose of the present invention is to provide a fire resistance performance detection device for a fire-resistant air duct, so as to solve the problem in the prior art that with the enhancement of people's fire awareness, the fire resistance performance detection device of the fire-resistant air duct in the past was difficult to meet people's requirements for fire resistance testing, and people need a detection device with stronger performance and better ability to reflect the actual fire situation to detect the air duct.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fire resistance performance detection device for a fire-resistant air duct, comprising a base, two groups of fans are fixedly connected to the top of the base, a gas storage tank is arranged between the two groups of fans, one end of one group of fans is provided with a No. 1 test tube, and one end of the other group of fans is provided with a No. 2 test tube, and the ends of the No. 1 test tube and the No. 2 test tube away from the fans are provided with a combustion furnace, the No. 1 test tube and the No. 2 test tube are installed inside the combustion furnace and extend to the outside of the combustion furnace, and the side of the combustion furnace close to the fan is fixedly connected to an external thermometer, and the external thermometer is arranged above the No. 1 test tube and the No. 2 test tube.

[0006] As a preferred solution of the present invention, one end of the two groups of fans are fixedly connected with a hose, and the two groups of hoses are respectively installed on one end of the No. 1 test tube and the No. 2 test tube close to the fan, and the bottom ends of the No. 1 test tube and the No. 2 test tube are provided with mounting frames, and the mounting frames are fixedly connected to the top of the base.

[0007] As a preferred solution of the present invention, two sets of sealing blocks are fixedly connected to one end of the combustion furnace away from the fan, the interior of the sealing block is connected to the end of the No. 1 test tube and the No. 2 test tube away from the fan, a pressure gauge is arranged on the outside of the sealing block, and a groove is opened on one side of the No. 1 test tube.

[0008] As a preferred embodiment of the present invention, two groups of exhaust pipes are fixedly connected to the top of the combustion furnace, gas supply pipes are fixedly connected to both sides of the combustion furnace, one end of the gas supply pipe is connected to an air outlet pipe and the air outlet pipe is fixedly connected to the inner wall of the combustion furnace, and a plurality of groups of combustion nozzles are arranged at the top of the air outlet pipe and the combustion nozzles are located directly below the No. 1 test tube or the No. 2 test tube.

[0009] As a preferred embodiment of the present invention, the bottom wall of the combustion furnace is fixedly connected to a refractory brick wall, the top of the refractory brick wall does not contact the top wall of the combustion furnace, a storage groove is opened inside the refractory brick wall, and quartz glass observation windows are fixedly connected to both sides of the refractory brick wall.

[0010] As a preferred solution of the present invention, the top of the combustion furnace is fixedly connected to a connecting seat, the top of the connecting seat is fixedly connected to a telescopic cylinder, the output end of the telescopic cylinder is fixedly connected to a connecting plate, the bottom end of the connecting plate is fixedly connected to an intelligent infrared camera, and the bottom end of the intelligent infrared camera is fixedly connected to a trapezoidal block.

[0011] As a preferred solution of the present invention, two groups of closed plates are slidably connected to the bottom end of the connecting seat, and movable grooves are opened at opposite ends of the two groups of closed plates, and the shape of the movable grooves corresponds to the trapezoidal block at the bottom end of the intelligent infrared camera.

[0012] As a preferred solution of the present invention, a sliding groove is opened on one side of the closing plate, a sliding rod is fixedly connected to the inner wall of the sliding groove, the sliding rod slides inside the connecting seat, the outer wall of the sliding rod is sleeved with a spring, and the spring is fixed to the inner wall of the connecting seat.

[0013] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0014] 1. Through the coordination of gas storage tanks, intelligent infrared cameras, slots and other parts, the environment of the refractory air duct under the conditions of external fire and internal and external fire is simulated. Through the coordination of external thermometers and intelligent infrared cameras, the temperature difference of the refractory air duct inside and outside the combustion furnace is detected to check its thermal insulation and integrity. Through the coordination of fans and sealing blocks, the internal pressure of the refractory air duct is detected to be stable. The coordination of fans and gas storage tanks is used to check whether there is a gap between the No. 1 test tube and the No. 2 test tube, thereby simplifying the inspection steps, optimizing the inspection procedures, and expanding the detection range.

[0015] 2. The characteristics of the refractory brick wall are used to synchronize the temperatures on both sides of the refractory brick wall to save energy and reduce errors. Through the cooperation of the telescopic cylinder and the connecting plate and other parts, the intelligent infrared camera can be protected by the closed plate inside the connecting seat in the non-detection state, thereby improving the practicality and stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection state of the present invention;

[0020] Figure 4 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0021] Description of reference numerals:

[0022] 1. Base; 2. Fan; 201. Gas storage tank; 301. Test tube No. 1; 302. Test tube No. 2; 4. External thermometer; 5. Combustion furnace; 6. Exhaust pipe; 7. Telescopic cylinder; 8. Connecting seat; 9. Sealing block; 1001. Gas pipe; 1002. Combustion nozzle; 1003. Exhaust pipe; 11. Mounting frame; 12. Hose; 13. Refractory brick wall; 14. Intelligent infrared camera; 15. Slot; 16. Quartz glass observation window; 17. Connecting plate; 18. Sliding rod; 19. Spring; 20. Sliding groove; 21. Closing plate; 22. Movable groove. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The present invention provides Figure 1-4The fire resistance performance detection device of a fire-resistant air duct shown in the figure includes a base 1, two groups of fans 2 are fixedly connected to the top of the base 1, a gas storage tank 201 is arranged between the two groups of fans 2, and the interior of the gas storage tank 201 is filled with colored gas, one end of one group of fans 2 is provided with a No. 1 test tube 301, and one end of the other group of fans 2 is provided with a No. 2 test tube 302, which are used to detect the fire conditions under different conditions, and a combustion furnace 5 is arranged at the end of the No. 1 test tube 301 and the No. 2 test tube 302 away from the fan 2, and the combustion furnace 5 is used to simulate the fire scene, and the No. 1 test tube 301 and the No. 2 test tube 302 are installed in the interior of the combustion furnace 5 and extend to the outside of the combustion furnace 5, so as to test the thermal insulation of the air duct, and the combustion furnace 5 is fixedly connected to the side of the combustion furnace 5 close to the fan 2. The external thermometer 4 is arranged above the No. 1 test tube 301 and the No. 2 test tube 302, and the external thermometer 4 is used to detect the No. 1 test tube located outside the combustion furnace 5. The temperature of the No. 1 test tube 301 and the No. 2 test tube 302 is measured. One end of the two sets of fans 2 is fixedly connected with a hose 12. The two sets of hoses 12 are respectively installed on the ends of the No. 1 test tube 301 and the No. 2 test tube 302 close to the fan 2. The hose 12 is used to transmit gas. The bottom ends of the No. 1 test tube 301 and the No. 2 test tube 302 are provided with a mounting frame 11. The mounting frame 11 is fixedly connected to the top of the base 1, so as to fix the No. 1 test tube 301 and the No. 2 test tube 302. The end of the combustion furnace 5 away from the fan 2 is fixedly connected with two sets of sealing blocks 9. The interior of the sealing block 9 is connected to the ends of the No. 1 test tube 301 and the No. 2 test tube 302 away from the fan 2. The No. 1 test tube 301 and the No. 2 test tube 302 are sealed by the sealing block 9 and the pressure inside them is observed from the side. A pressure gauge is provided on the outside of the sealing block 9. A groove 15 is opened on one side of the No. 1 test tube 301. The groove 15 is used to simulate the situation of the No. 1 test tube 301 being subjected to fire inside and outside.

[0025] like Figure 1-4As shown, two groups of exhaust pipes 6 are fixedly connected to the top of the combustion furnace 5, and the gas inside the combustion furnace 5 is discharged through the exhaust pipes 6. Both sides of the combustion furnace 5 are fixedly connected with gas pipes 1001, and fuel gas is introduced through the gas pipes 1001. One end of the gas pipe 1001 is connected to an outlet pipe 1003, and the outlet pipe 1003 is fixedly connected to the inner wall of the combustion furnace 5. A plurality of groups of combustion nozzles 1002 are arranged on the top of the outlet pipe 1003, and the combustion nozzles 1002 are located directly below the No. 1 test tube 301 or the No. 2 test tube 302. The arrangement of the combustion nozzle 1002 and the air outlet pipe 1003 can increase the heating rate inside the combustion furnace 5 and save resources required for heating. The bottom wall of the combustion furnace 5 is fixedly connected with a refractory brick wall 13. The top of the refractory brick wall 13 does not contact the top wall of the combustion furnace 5. The characteristics of the refractory brick wall 13 are utilized to synchronize the temperatures on both sides of the refractory brick wall 13 to save energy and reduce errors. A storage groove is provided inside the refractory brick wall 13. Quartz glass observation windows 16 are fixedly connected on both sides of the refractory brick wall 13 to facilitate observation by other instruments.

[0026] like Figure 1-4 As shown, the top of the combustion furnace 5 is fixedly connected with a connecting seat 8, the top of the connecting seat 8 is fixedly connected with a telescopic cylinder 7, the output end of the telescopic cylinder 7 is fixedly connected with a connecting plate 17, the connecting plate 17 is driven to rise and fall by the telescopic cylinder 7, the bottom end of the connecting plate 17 is fixedly connected with an intelligent infrared camera 14, the bottom end of the intelligent infrared camera 14 is fixedly connected with a trapezoidal block, the bottom end of the connecting seat 8 is slidably connected with two groups of closing plates 21, the opposite ends of the two groups of closing plates 21 are provided with movable grooves 22, the shape of the movable grooves 22 is similar to that of the intelligent infrared camera Corresponding to the trapezoidal block at the bottom of the camera 14, a sliding groove 20 is opened on one side of the closing plate 21, and a sliding rod 18 is fixedly connected to the inner wall of the sliding groove 20. The sliding rod 18 slides inside the connecting seat 8, and the outer wall of the sliding rod 18 is sleeved with a spring 19, which is fixed to the inner wall of the connecting seat 8. The telescopic cylinder 7 is used to bring the intelligent infrared camera 14 to the inside of the refractory brick wall 13 for observation, and when not needed, the elastic force of the spring 19 is used to close the closing plate 21 so that it does not affect the integrity of the intelligent infrared camera 14.

[0027] How it works

[0028] like Figure 1-4As shown, when the fire-resistant air duct needs to be tested, firstly, the No. 1 test tube 301 and the No. 2 test tube 302 are fixed on the mounting frame 11 and sealed by the sealing block 9, and then the hose 12 is installed at the other end, and then the gas pipe 1001 and the combustion nozzle 1002 are started to heat up the inside of the combustion furnace 5, and the internal gas is extracted through the cooperation of the hose 12 and the fan 2 to complete the fire scene simulation, and the slot 15 is used to simulate the two situations of external fire and internal and external fire. In this process, the internal pressure and external temperature of the No. 1 test tube 301 and the No. 2 test tube 302 are respectively tested by the sealing block 9 and the external thermometer 4;

[0029] After stopping the combustion, start the telescopic cylinder 7 to drive the connecting plate 17, and use the trapezoidal block corresponding to the bottom of the intelligent infrared camera 14 and the movable groove 22 to squeeze open the closing plate 21, so that the intelligent infrared camera 14 can enter the interior of the refractory brick wall 13, and observe whether the refractory air duct is intact and whether the temperature is too high or there is fire on the back through the cooperation of the quartz glass observation window 16 and the intelligent infrared camera 14. At this time, start the fan 2 again to blow the colored gas inside the gas storage tank 201 into the combustion furnace 5 to observe whether there is colored gas leakage between the No. 1 test tube 301 and the No. 2 test tube 302 to determine whether there is a gap. Finally, before conducting the next test, use the telescopic cylinder 7 to drive the connecting plate 17 to retract the intelligent infrared camera 14, and use the elastic force of the spring 19 to close the closing plate 21 to protect the intelligent infrared camera 14.

[0030] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fire resistance performance detection device for a fire resistance air duct, comprising a base (1), characterized in that: Two groups of fans (2) are fixedly connected to the top of the base (1), and a gas storage tank (201) is arranged between the two groups of fans (2). A first test tube (301) is arranged at one end of one group of fans (2), and a second test tube (302) is arranged at one end of the other group of fans (2). A combustion furnace (5) is arranged at one end of the first test tube (301) and the second test tube (302) away from the fans (2). The first test tube (301) and the second test tube (302) are installed inside the combustion furnace (5) and extend to the outside of the combustion furnace (5). An external thermometer (4) is fixedly connected to a side of the combustion furnace (5) close to the fan (2), and the external thermometer (4) is arranged above the first test tube (301) and the second test tube (302).

2. The fire resistance performance detection device of a fire-resistant air duct according to claim 1, characterized in that: One end of the two groups of fans (2) is fixedly connected to a hose (12), and the two groups of hoses (12) are respectively installed on one end of the first test tube (301) and the second test tube (302) close to the fan (2). The bottom ends of the first test tube (301) and the second test tube (302) are both provided with a mounting frame (11), and the mounting frame (11) is fixedly connected to the top end of the base (1).

3. The fire resistance performance detection device of a fire-resistant air duct according to claim 1, characterized in that: Two groups of sealing blocks (9) are fixedly connected to one end of the combustion furnace (5) away from the fan (2); the interior of the sealing block (9) is connected to one end of a No. 1 test tube (301) and a No. 2 test tube (302) away from the fan (2); a pressure gauge is arranged on the outside of the sealing block (9); and a groove (15) is provided on one side of the No. 1 test tube (301).

4. The fire resistance performance detection device of a fire-resistant air duct according to claim 1, characterized in that: Two groups of exhaust pipes (6) are fixedly connected to the top of the combustion furnace (5), and gas pipes (1001) are fixedly connected to both sides of the combustion furnace (5). One end of the gas pipe (1001) is connected to an outlet pipe (1003), and the outlet pipe (1003) is fixedly connected to the inner wall of the combustion furnace (5). A plurality of groups of combustion nozzles (1002) are arranged at the top of the outlet pipe (1003), and the combustion nozzles (1002) are located directly below the first test tube (301) or the second test tube (302).

5. The fire resistance performance detection device of a fire-resistant air duct according to claim 1, characterized in that: The bottom wall of the combustion furnace (5) is fixedly connected to a refractory brick wall (13), the top of the refractory brick wall (13) does not contact the top wall of the combustion furnace (5), a storage groove is provided inside the refractory brick wall (13), and quartz glass observation windows (16) are fixedly connected to both sides of the refractory brick wall (13).

6. The fire resistance performance detection device of a fire-resistant air duct according to claim 1, characterized in that: The top end of the combustion furnace (5) is fixedly connected to a connection seat (8), the top end of the connection seat (8) is fixedly connected to a telescopic cylinder (7), the output end of the telescopic cylinder (7) is fixedly connected to a connection plate (17), the bottom end of the connection plate (17) is fixedly connected to an intelligent infrared camera (14), and the bottom end of the intelligent infrared camera (14) is fixedly connected to a trapezoidal block.

7. The fire resistance performance detection device of a fire-resistant air duct according to claim 6, characterized in that: The bottom end of the connection seat (8) is slidably connected to two groups of closed plates (21), and the opposite ends of the two groups of closed plates (21) are provided with movable grooves (22), and the shape of the movable grooves (22) corresponds to the trapezoidal block at the bottom end of the intelligent infrared camera (14).

8. The fire resistance performance detection device of a fire-resistant air duct according to claim 7, characterized in that: A sliding groove (20) is provided on one side of the closing plate (21), and a sliding rod (18) is fixedly connected to the inner wall of the sliding groove (20), and the sliding rod (18) slides inside the connecting seat (8). A spring (19) is sleeved on the outer wall of the sliding rod (18), and the spring (19) is fixed to the inner wall of the connecting seat (8).

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