Experimental furnace for heat insulation efficiency of fireproof coating for steel structure

Abstract

The utility model relates to a steel structure fireproof coating heat insulation efficiency experiment furnace, and relates to the fireproof coating heat insulation technical field, the steel structure fireproof coating heat insulation efficiency experiment furnace comprises a furnace body in which a combustion chamber is formed, and a spraying box, the furnace body is provided with a flaming device, the furnace body is provided with an experiment through hole, and the furnace body is provided with a spraying plate at the experiment through hole; the side, coated with the fireproof coating, of the spraying plate faces the experiment through hole, the fire spraying device is used for spraying fire towards the side, coated with the fireproof coating, of the spraying plate, and a temperature sensor is arranged on the side, away from the fireproof coating, of the spraying plate; the spraying box is connected with the combustion chamber of the furnace body through a smoke inlet, the spraying box is provided with a spraying head and a discharging port, smoke flows along the spraying box from the smoke inlet and is discharged from the discharging port, and the spraying head can spray water to the smoke for cooling. According to the device, operators can be effectively prevented from being scalded by flue gas, the safety is improved, and pollution of the flue gas to air is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fire retardant coating thermal insulation, and in particular to a steel structure fire retardant coating thermal insulation efficiency test furnace. Background Art

[0002] Fire retardant coatings are coatings applied to the surface of materials to improve the fire resistance of the materials, slow down the spread of flames, or prevent combustion within a certain period of time. This type of coating is called fire retardant coatings, or flame retardant coatings. In steel structures, fire retardant coatings are often applied for heat insulation, and the heat insulation performance of fire retardant coatings needs to be obtained through experiments.

[0003] After the existing experimental furnace burns the fire retardant coating, the high-temperature flue gas generated by the combustion in the furnace is directly discharged. However, the high-temperature flue gas is relatively hot and contains small particles. Direct discharge will not only burn on-site workers, but also cause air pollution. Utility Model Content

[0004] In order to improve the problem of direct smoke emission in the experimental furnace, which easily burns the staff and reduces safety, the present application provides a steel structure fire retardant coating thermal insulation efficiency experimental furnace.

[0005] The steel structure fire retardant coating thermal insulation efficiency test furnace provided in this application adopts the following technical solution:

[0006] A steel structure fire retardant coating heat insulation efficiency test furnace, comprising a furnace body with a combustion chamber formed therein, a flame spraying device provided on the furnace body, a test through hole provided on the furnace body, a spraying plate provided on the furnace body at the test through hole, the spraying plate with a side coated with the fire retardant coating facing the test through hole, the flame spraying device is used to spray fire toward the side of the spraying plate coated with the fire retardant coating, and a temperature sensor is provided on the side of the spraying plate facing away from the fire retardant coating;

[0007] It also includes a spray box, which is connected to the combustion chamber of the furnace body through a smoke inlet. The spray box is provided with a nozzle and a discharge port. The smoke flows from the smoke inlet along the spray box and is discharged from the discharge port. The nozzle can spray water toward the smoke to cool it.

[0008] By adopting the above technical scheme, when conducting experiments on fire-retardant coatings, the spray plate coated with fire-retardant coatings is first installed at the experimental through hole, and then the flame spraying device is turned on to spray the side of the spray plate coated with fire-retardant coatings, and then the temperature of the back of the spray plate is detected by the temperature sensor to judge the performance of the fire-retardant coating; the smoke generated after combustion enters the spray box through the smoke inlet, and then the nozzle sprays water to cool the smoke, and absorbs the particles in the smoke, and reduces the temperature of the smoke discharged from the exhaust port, thereby effectively avoiding smoke scalding operators, improving safety, and reducing the pollution of the smoke to the air.

[0009] In a specific possible implementation scheme, the smoke inlet and the discharge port are arranged on opposite side walls of the spray box, a baffle is provided in the spray box to form a U-shaped channel for smoke flow, and the nozzle is arranged above the smoke inlet.

[0010] By adopting the above technical solution, the smoke enters the spray box through the smoke inlet and flows along the U-shaped channel under the guidance of the baffle. Then the nozzle sprays water on the smoke from top to bottom, extending the circulation time of the smoke in the spray box, so that the smoke can be fully cooled, and the water can fully absorb the particulate matter in the smoke.

[0011] In a specific possible implementation manner, the experimental through hole is opened on the top wall of the furnace body, and the spraying plate is overlapped on the furnace body.

[0012] By adopting the above technical solution, the spray-coated plate is directly overlapped at the test through hole, which facilitates the installation of the spray-coated plate on the furnace body.

[0013] In a specific possible implementation mode, a heat-insulating tube is provided on the side of the spray plate facing away from the fire-retardant coating, the heat-insulating tube is detachably connected to the spray plate via a clamp, and the temperature sensor is located inside the heat-insulating tube.

[0014] By adopting the above technical scheme, when the insulation efficiency test is completed, the sprayed plate can be directly removed through the insulation tube without waiting for the sprayed plate to cool down, thus saving the time for removing the sprayed plate; at the same time, the insulation tube is used to insulate the temperature sensor from the surrounding environment, thereby reducing the influence of the furnace body heat radiation on the temperature sensor measurement, thereby improving the accuracy of the temperature sensor in measuring the temperature of the sprayed plate.

[0015] In a specific feasible implementation scheme, the clamping member includes clamping rods respectively arranged on opposite side walls of the insulation tube, the clamping rods and the insulation tube are slidably arranged, and clamping grooves are respectively opened on opposite side walls of the spray plate. The clamping rods correspond to the clamping grooves one by one, and the end of the clamping rod forms a clamping portion, which can be inserted into the clamping groove to clamp and fix the spray plate.

[0016] By adopting the above technical solution, when installing the spray plate and the insulation tube, first place the back of the spray plate on the end of the insulation tube, and then slide the clamping rod, the clamping rod drives the clamping part to be inserted into the clamping groove, thereby improving the convenience of fixing the spray plate and the insulation tube.

[0017] In a specific possible implementation scheme, a clamping spring is provided on the thermal insulation cylinder, the clamping spring corresponds to the clamping rod one by one, the clamping spring is connected to the clamping rod, and is used to drive the clamping part to insert into the clamping groove.

[0018] By adopting the above technical solution, the clamping part is pulled by the clamping spring to be inserted into the clamping groove, thereby improving the stability of the clamping part being inserted into the clamping groove.

[0019] In a specific feasible implementation scheme, an adjustment frame is slidably provided on the insulation tube, and a guide plate is provided on the adjustment frame. The guide plate corresponds to the clamping rod one by one, and the clamping rod can abut against the guide plate and slide along the guide plate. The guide plate is used to guide the clamping part to be pulled out of the clamping groove.

[0020] By adopting the above technical solution, when disassembling the insulation tube and the spray plate, the operator slides the adjustment frame, the adjustment frame drives the two guide plates to slide, the guide plates guide the two clamping plates to slide, and drive the clamping part to pull out the clamping groove, thereby improving the convenience of disassembling the insulation tube and the spray plate.

[0021] In a specific feasible implementation scheme, a mounting rod is provided on the adjustment frame, a telescopic spring is sleeved on the mounting rod, the temperature sensor is fixedly arranged on the telescopic spring, a clamping bolt is threadedly sleeved on the mounting rod, and the clamping bolt can squeeze the telescopic spring and press the temperature sensor against the spray plate.

[0022] By adopting the above technical solution, the telescopic spring is compressed by tightening the bolt, and the telescopic spring presses the temperature sensor against the spray plate, thereby improving the convenience of disassembly and assembly of the spray plate and the temperature sensor.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When conducting experiments on fire retardant coatings, the smoke generated after combustion enters the spray box from the smoke inlet, and then the nozzle sprays water to cool the smoke and adsorbs the particles in the smoke, reducing the temperature of the smoke discharged from the discharge port, thereby effectively preventing the smoke from scalding the operator, improving safety, and reducing the pollution caused by the smoke to the air;

[0025] 2. After the insulation efficiency test is completed, the sprayed plate can be directly removed through the insulation tube without waiting for the sprayed plate to cool down, which saves the time of removing the sprayed plate; at the same time, the insulation tube is used to insulate the temperature sensor from the surrounding environment, which reduces the influence of the furnace heat radiation on the temperature sensor measurement and improves the accuracy of the temperature sensor's measurement of the sprayed plate temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the steel structure fire retardant coating thermal insulation efficiency test furnace of Example 1 of the present application.

[0027] Figure 2 is along Figure 1 Section view along line AA.

[0028] Figure 3 is along Figure 2 Cross-sectional view along line BB.

[0029] Figure 4 It is a structural schematic diagram of the steel structure fire retardant coating thermal insulation efficiency test furnace of Example 2 of the present application.

[0030] Figure 5 It is a schematic diagram for showing the structure of the clamping parts.

[0031] Figure 6 is along Figure 3 Sectional view along the CC line.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. furnace body; 11. experimental through hole; 2. flamethrower; 21. flamethrower; 3. spray box; 31. smoke inlet; 32. discharge outlet; 33. baffle; 34. U-shaped channel; 35. nozzle; 36. drain outlet; 4. spray plate; 5. temperature sensor; 61. heat insulation tube; 62. clamping member; 621. clamping rod; 622. clamping part; 623. clamping groove; 624. clamping spring; 63. adjustment frame; 64. support rod; 65. guide plate; 66. mounting rod; 67. telescopic spring; 68. tightening bolt. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The embodiment of the present application discloses a furnace for testing the thermal insulation efficiency of fire retardant coatings for steel structures.

[0035] Example 1

[0036] Reference Figure 1 , Figure 2The steel structure fire retardant coating heat insulation efficiency test furnace includes a furnace body 1, a flame spraying device 2, and a spray box 3. A combustion chamber is formed inside the furnace body 1. The flame spraying device 2 in this embodiment includes two flame spraying guns 21. The two flame spraying guns 21 are inserted into the combustion chamber inside the furnace body 1. An experimental through hole 11 is opened on the top wall of the furnace body 1. The experimental through hole 11 is located above the nozzle of the flame spraying gun 21. A spraying plate 4 is provided on the furnace body 1. One side of the spraying plate 4 is coated with fire retardant coating. The opening of the experimental through hole 11 is smaller than the spraying plate 4, so that the spraying plate 4 can block the experimental through hole 11. The side of the spraying plate 4 coated with fire retardant coating is downwardly covered on the experimental through hole 11, so that the flame spraying gun 21 sprays fire toward the side of the fire retardant coating on the spraying plate 4. The side of the spraying plate 4 coated with fire retardant coating is the front side, and the side opposite to it is the back side. A temperature sensor 5 is provided on the back side of the spraying plate 4.

[0037] Reference Figure 1 , Figure 3 The spray box 3 is fixedly arranged on the side of the furnace body 1, and the spray box 3 is connected to the furnace body 1 through the smoke inlet 31, so that the smoke in the combustion chamber can enter the spray box 3 through the smoke inlet 31. A discharge port 32 is opened on the side wall of the spray box 3 opposite to the smoke inlet 31, and the discharge port 32 is at the same height as the smoke inlet 31. A baffle 33 is fixedly arranged in the spray box 3, and the baffle 33 is horizontally placed between the smoke inlet 31 and the discharge port 32, so that a U-shaped channel 34 is formed between the smoke inlet 31 and the discharge port 32. A nozzle 35 is arranged in the spray box 3, and the nozzle 35 is arranged at the top of the U-shaped channel 34 near the smoke inlet 31 and above the smoke inlet 31, so that when the smoke enters the spray box 3, the nozzle 35 sprays water toward the smoke for cooling. The nozzle 35 is externally connected to a water pipe, and a drain port 36 is provided at the bottom of the spray box 3 , and the water after the nozzle 35 sprays the flue gas flows out from the drain port 36 .

[0038] The implementation principle of Example 1 is: when experimenting with the fire retardant coating, first cover the spray plate 4 coated with the fire retardant coating at the experimental through hole 11, then turn on the flamethrower 21 to spray and burn the front of the spray plate 4, and then detect the temperature of the back of the spray plate 4 through the temperature sensor 5 to judge the performance of the fire retardant coating.

[0039] The smoke generated after combustion enters the spray box 3 from the smoke inlet 31, and the smoke flows along the U-shaped channel 34 toward the discharge port 32. Then the nozzle 35 sprays water to cool the smoke and adsorbs the particles in the smoke, thereby reducing the temperature of the smoke discharged from the discharge port 32, thereby effectively preventing the smoke from scalding the operator, improving safety, and reducing the pollution caused by the smoke to the air.

[0040] Example 2

[0041] Reference Figure 4The difference between this embodiment and embodiment 1 is that a heat insulating tube 61 is provided on the back of the spray plate 4. The heat insulating tube 61 is made of heat insulating material and is a square tube structure. The end of the heat insulating tube 61 is abutted against the back of the spray plate 4. The temperature sensor 5 is arranged inside the heat insulating tube 61. The heat insulating tube 61 insulates the temperature sensor 5 from the surrounding environment, reduces the influence of the heat radiation of the furnace body 1 on the measurement of the temperature sensor 5, and improves the accuracy of the temperature sensor 5 measuring the temperature of the spray plate 4.

[0042] Reference Figure 5 , Figure 6 The heat-insulating cylinder 61 and the spray plate 4 are detachably connected by a clamping member 62. The clamping member 62 of this embodiment includes clamping rods 621 respectively arranged on the opposite side walls of the heat-insulating cylinder 61. The number of clamping rods 621 on each side wall of the heat-insulating cylinder 61 is two. The four clamping rods 621 all pass through the side walls of the heat-insulating cylinder 61 and are slidably connected to the heat-insulating cylinder 61. The end of each clamping rod 621 is bent toward the spray plate 4 to form a clamping portion 622. The opposite side walls of the spray plate 4 are provided with a clamping portion 622 for inserting To the clamping groove 623, the clamping groove 623 corresponds to the clamping part 622 one by one, and a clamping spring 624 is sleeved on each clamping rod 621. The clamping spring 624 is located in the insulation tube 61. One end of the insulation tube 61 is fixedly connected to the clamping rod 621, and the other end is fixedly connected to the insulation tube 61. Initially, the clamping spring 624 applies an initial pulling force to the clamping rod 621, so that the clamping part 622 can be inserted into the clamping groove 623, thereby improving the stability of the clamping part 622 inserted into the clamping groove 623.

[0043] Reference Figure 5 , Figure 6 An adjustment frame 63 is slidably provided in the insulation tube 61, and a support rod 64 is provided in the insulation tube 61. The adjustment frame 63 passes through the support rod 64 and is slidably connected with the support rod 64. The adjustment frame 63 slides along the length direction of the insulation tube 61. Four guide plates 65 are fixedly provided at one end of the adjustment frame 63 close to the spraying plate 4. The guide plates 65 correspond to the clamping rods 621 one by one. The two guide plates 65 in the opposite directions of the two clamping rods 621 form a group, and the distance between the two guide plates 65 in each group gradually decreases from the side away from the spraying plate 4 toward the side close to the spraying plate 4. Each guide plate 65 abuts against the end of the clamping rod 621. When the adjustment frame 63 drives the guide plate 65 to slide toward the spray plate 4, the guide plate 65 guides the two opposite clamping rods 621 to move away from each other, and drives the clamping part 622 to be pulled out of the clamping groove 623, so that the four clamping parts 622 can be pulled out of the clamping groove 623 at one time by sliding the adjustment frame 63, thereby improving the convenience of disassembling the spray plate 4 and the insulation tube 61.

[0044] Reference Figure 5 , Figure 6A mounting rod 66 arranged along the length direction of the insulation tube 61 is fixedly provided on the support rod 64. The mounting rod 66 passes through the adjustment frame 63 and extends toward the direction of the spray plate 4. A telescopic spring 67 is sleeved on the mounting rod 66. The telescopic spring 67 is slidably connected to the mounting rod 66. One end of the telescopic spring 67 is fixedly connected to the temperature sensor 5. A tightening bolt 68 is threadedly sleeved on the mounting rod 66. The tightening bolt 68 is located at the end of the telescopic spring 67 away from the temperature sensor 5 and abuts against the telescopic spring 67. The tightening bolt 68 presses the temperature sensor 5 against the back of the spray plate 4 through the telescopic spring 67, thereby improving the convenience of disassembly and assembly of the temperature sensor 5 and the spray plate 4.

[0045] The implementation principle of Example 2 is as follows: when the spray plate 4 is covered with the experimental through hole 11, the adjustment frame 63 is first pressed down, and the adjustment frame 63 drives the clamping rods 621 to move away from each other through the guide plate 65, so that the clamping part 622 is opened, and then the heat insulation tube 61 is placed on the back of the spray plate 4, so that the clamping part 622 is aligned with the clamping groove 623, and then the adjustment frame 63 is moved up, and the adjustment frame 63 drives the guide plate 65 to slide, and the telescopic spring 67 pushes the clamping rods 621 to move closer to each other, and the clamping rod 621 drives the clamping part 622 to be inserted into the clamping groove 623, thereby completing the fixation between the spray plate 4 and the heat insulation tube 61. Then the tightening bolt 68 is screwed, and the tightening bolt 68 presses the temperature sensor 5 against the back of the spray plate 4 through the telescopic spring 67, thereby completing the installation and fixation of the temperature sensor 5 and the spray plate 4.

[0046] When the spray plate 4 is disassembled, the adjustment frame 63 is pressed down, and the adjustment frame 63 drives the clamping rods 621 to move away from each other through the guide plate 65, so that the clamping part 622 is pulled out of the clamping groove 623, thereby improving the convenience of disassembly and assembly of the spray plate 4 and the insulation tube 61.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel structure fire retardant coating heat insulation efficiency test furnace, comprising a furnace body (1) with a combustion chamber formed therein, characterized in that: The furnace body (1) is provided with a flame spraying device (2), the furnace body (1) is provided with an experimental through hole (11), the furnace body (1) is provided with a spraying plate (4) at the experimental through hole (11), the spraying plate (4) faces a side coated with a fire retardant coating toward the experimental through hole (11), the flame spraying device (2) is used to spray fire toward the side of the spraying plate (4) coated with the fire retardant coating, and a temperature sensor (5) is provided on a side of the spraying plate (4) facing away from the fire retardant coating; The invention also comprises a spray box (3), wherein the spray box (3) is connected to the combustion chamber of the furnace body (1) via a smoke inlet (31), and a nozzle (35) and an exhaust port (32) are provided on the spray box (3), and smoke flows from the smoke inlet (31) along the spray box (3) and is discharged from the exhaust port (32), and the nozzle (35) can spray water toward the smoke for cooling.

2. The steel structure fire retardant coating thermal insulation efficiency test furnace according to claim 1, characterized in that: The smoke inlet (31) and the discharge port (32) are arranged on opposite side walls of the spray box (3). A baffle (33) is arranged inside the spray box (3) to form a U-shaped channel (34) for smoke flow. The nozzle (35) is arranged above the smoke inlet (31).

3. The steel structure fire retardant coating thermal insulation efficiency test furnace according to claim 1, characterized in that: The experimental through hole (11) is opened on the top wall of the furnace body (1), and the spraying plate (4) is overlapped on the furnace body (1).

4. The steel structure fire retardant coating thermal insulation efficiency test furnace according to claim 1, characterized in that: A heat insulating tube (61) is provided on the side of the spray plate (4) facing away from the fire retardant coating, the heat insulating tube (61) and the spray plate (4) are detachably connected via a clamp (62), and the temperature sensor (5) is located inside the heat insulating tube (61).

5. The steel structure fire retardant coating heat insulation efficiency test furnace according to claim 4, characterized in that: The clamping member (62) includes a clamping rod (621) arranged on the opposite side walls of the insulation tube (61), and the clamping rod (621) is slidably arranged with the insulation tube (61). Clamping grooves (623) are respectively opened on the opposite side walls of the spray plate (4), and the clamping rod (621) corresponds to the clamping groove (623) one by one. The end of the clamping rod (621) forms a clamping portion (622), and the clamping portion (622) can be inserted into the clamping groove (623) to clamp and fix the spray plate (4).

6. The steel structure fire retardant coating heat insulation efficiency test furnace according to claim 5, characterized in that: The heat-insulating cylinder (61) is provided with a clamping spring (624), the clamping spring (624) corresponds one-to-one to the clamping rod (621), the clamping spring (624) is connected to the clamping rod (621), and is used to drive the clamping portion (622) to be inserted into the clamping groove (623).

7. The steel structure fire retardant coating heat insulation efficiency test furnace according to claim 6, characterized in that: An adjustment frame (63) is slidably provided on the insulation tube (61), and a guide plate (65) is provided on the adjustment frame (63). The guide plate (65) corresponds to the clamping rod (621) one by one. The clamping rod (621) can abut against the guide plate (65) and slide along the guide plate (65). The guide plate (65) is used to guide the clamping part (622) to be pulled out of the clamping groove (623).

8. The steel structure fire retardant coating heat insulation efficiency test furnace according to claim 7, characterized in that: The adjustment frame (63) is provided with a mounting rod (66), a telescopic spring (67) is sleeved on the mounting rod (66), the temperature sensor (5) is fixedly arranged on the telescopic spring (67), and a tightening bolt (68) is threadedly sleeved on the mounting rod (66), and the tightening bolt (68) can squeeze the telescopic spring (67) and press the temperature sensor (5) against the spray plate (4).

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