Device for testing heat insulation performance of fireproof coating for steel structure

Abstract

The utility model belongs to the field of detection, in particular relates to a device for testing the heat insulation performance of a fireproof coating for a steel structure, and aims to solve the problems that when a flame projector is used for heating steel, only one point is heated, so that the whole steel is heated unevenly, and the heat insulation performance of the steel structure is influenced. In order to solve the problems that detection results are affected and detection data are affected due to the fact that the periphery is not closed in the heating process, the device comprises a combustion box, a box cover is hinged to the combustion box, an observation window is arranged on the box cover, a handle is fixedly connected to the top of the box cover, and a digital display screen is arranged on the outer wall of one side of the combustion box. Fixing plates are symmetrically and fixedly connected to the inner walls of the two sides of the combustion box, fixing frames are symmetrically arranged in the combustion box, a rocker is driven by a motor to rotate, then a movable rod is driven to do fan-shaped reciprocating motion, then an L-shaped rod drives a clamping mechanism and a flame projector to do vertical reciprocating motion, and the effect of evenly heating a steel structure can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, in particular to a device for testing the heat insulation performance of fire retardant coatings for steel structures. Background Art

[0002] Fire retardant coating is a kind of coating applied on the surface of buildings. It has good fire retardant properties, can delay the spread of flames and reduce fire losses. In order to ensure the performance of the coating, performance testing is required. The thermal insulation performance test of fire retardant coating is to evaluate its ability to inhibit heat conduction under fire conditions.

[0003] After searching, the Chinese patent publication number CN214201259U discloses a device for detecting the thermal insulation performance of an intumescent steel structure fire retardant coating, which relates to the technical field of fireproof materials. The utility model includes a fixing mechanism, a limiting mechanism and a pressurizing mechanism. The fixing mechanism includes a first fixing plate, and a fixing hole is opened in the middle of the first fixing plate along its vertical center line. The limiting mechanism includes a first limiting plate and a second limiting plate, and the pressurizing mechanism includes a hydraulic cylinder. The utility model drives the second limiting groove to move down to the top of the flamethrower by moving the second limiting plate downward to engage, and finally fixes the flamethrower by tightening the fastening bolts, measures the temperature of the steel body through the temperature sensor, and then displays it digitally through the digital display screen, and then drives the pressurizing block downward through the hydraulic cylinder to squeeze the steel body, so that the device for detecting the thermal insulation performance of the intumescent steel structure fire retardant coating can avoid accidents of the staff in actual operation and improve its detection results.

[0004] The above-mentioned comparative document only heats one point when using a flamethrower to heat the steel, which will cause uneven heating of the entire steel, affecting the test results. In addition, the lack of sealing on all sides during the heating process will also affect the test data. Therefore, in order to solve this technical problem, the present technical solution proposes a device for testing the thermal insulation performance of fire retardant coatings for steel structures. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when a flamethrower is used to heat steel, only one point is heated, which causes uneven heating of the entire steel and affects the test results. In addition, the lack of sealing around the heating process also affects the test data. A device for testing the thermal insulation performance of fire retardant coatings for steel structures is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for testing the thermal insulation performance of fire retardant coatings for steel structures comprises a combustion box, a box cover is hingedly connected to the combustion box, an observation window is arranged on the box cover, a handle is fixedly connected to the top of the box cover, a digital display screen is arranged on the outer wall of one side of the combustion box, fixed plates are symmetrically fixedly connected to the inner walls on both sides of the combustion box, fixed frames are symmetrically arranged in the combustion box, the two fixed frames are respectively connected to the corresponding fixed plates by bolts, a steel structure is arranged between the two fixed frames, a temperature sensor is arranged on one side of the steel structure, a strip groove is opened on the inner wall of one side of the combustion box, a clamping mechanism is slidably connected in the strip groove, a flamethrower is clamped in the clamping mechanism, a strip hole is opened on one side of the combustion box, a reciprocating mechanism is arranged in the strip hole, the reciprocating mechanism is connected to the clamping mechanism, an outer wall of one side of the combustion box is fixedly connected to a base, a motor is fixedly connected to the top of the base, and the motor output shaft is connected to the reciprocating mechanism.

[0008] In a possible design, a first sealing gasket is fixedly connected to the bottom of the combustion box, a second sealing gasket is fixedly connected to the inner side of the box cover, and the top and bottom of the fixing frame are in contact with the second sealing gasket and the first sealing gasket respectively.

[0009] In a possible design, the clamping mechanism includes a first limit plate and a second limit plate, one side of the first limit plate extends into the strip groove and is slidably connected to the strip groove, one side of the second limit plate is rotationally connected to the first limit plate, and one side of the first limit plate is connected to the reciprocating mechanism.

[0010] In a possible design, the flamethrower is located in a circular hole gap formed between the first limiting plate and the second limiting plate, a handle is provided on one side of the first limiting plate, and the first limiting plate and the second limiting plate are connected by bolts.

[0011] In a possible design, the reciprocating mechanism includes an L-shaped rod, which is slidably connected in the strip hole, one end of the L-shaped rod extends into the combustion box and is fixedly connected to the first limit plate, the other end of the L-shaped rod extends outside the combustion box, and a limit groove is provided on the side of the L-shaped rod away from the combustion box, a movable rod is slidably connected in the limit groove, and the movable rod extends outside the limit groove.

[0012] In a possible design, a movable groove is provided on the side of the movable rod close to the combustion box, a rocker is slidably connected in the movable groove, the rocker extends out of the movable groove and one end of the rocker is fixedly connected to the motor output shaft, a connecting rod is rotatably connected to one side of the movable rod, and one end of the connecting rod is fixedly connected to the outer wall of the combustion box.

[0013] In the present application, the box cover is opened before use, the second limit plate is lifted, and the flamethrower is placed in the groove of the first limit plate, and then the second limit plate is covered, the flamethrower is pressed and the bolts on the second limit plate are tightened to fix the flamethrower, and then the two fixing frames are installed between the corresponding fixing plates, and then the steel structure is placed between the two fixing frames, and then the temperature sensor is attached to the back of the steel structure, the flamethrower is turned on to heat the steel structure, and the box cover is closed at the same time. The fixing frame and the top and bottom of the steel structure are sealed with a sealing gasket to prevent the temperature sensor from being affected by the flame temperature, thereby improving the detection accuracy. After the box cover is put on, the motor is started, and the motor output shaft drives the rocker to make periodic circular motion, so that the movable rod makes reciprocating fan-shaped motion with the connecting rod as the center, so that the front end of the movable rod drives the L-shaped rod to move up and down along the inner wall of the strip hole, and then the first limit plate moves up and down along the inner wall of the strip groove, and finally drives the flamethrower to make up and down reciprocating motion, so as to achieve the effect of uniform heating of the steel structure. During the heating process, the situation in the combustion box can be seen at any time through the observation window, and the temperature data can be viewed through the digital display screen. After the detection is completed, the motor is turned off, and the box cover is opened again, and the flamethrower is turned off at the same time. After cooling, the steel structure is taken out.

[0014] In the utility model, the device for testing the heat insulation performance of fire retardant coating for steel structure is driven by a motor to rotate the rocker, which then drives the movable rod to make a fan-shaped reciprocating motion, and then the L-shaped rod drives the clamping mechanism and the flamethrower to make an up and down reciprocating motion, so as to achieve the effect of uniformly heating the steel structure;

[0015] In the utility model, the device for testing the heat insulation performance of fire retardant coating for steel structure can achieve the effect of small measurement error by preventing the heat generated by the flame from affecting the detection result of the temperature sensor through the close contact between the first sealing gasket and the second sealing gasket and the fixing frame and the steel structure;

[0016] In the utility model, the motor drives the L-shaped rod in the reciprocating mechanism to move up and down, and finally makes the flamethrower do up and down reciprocating motion, so as to achieve the effect of uniformly heating the steel structure. Through the heat insulation effect of the first sealing pad and the second sealing pad, the external influence on the temperature sensor is reduced, and the detection accuracy is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a device for testing the thermal insulation performance of fire retardant coatings for steel structures proposed in the utility model;

[0018] Figure 2 This is a schematic diagram of the overall internal structure of a device for testing the thermal insulation performance of fire retardant coatings for steel structures proposed in the utility model;

[0019] Figure 3This is a partial cross-sectional structural schematic diagram of a device for testing the thermal insulation performance of fire retardant coatings for steel structures proposed in the utility model;

[0020] Figure 4 This is a schematic diagram of the reciprocating mechanism structure of a device for testing the thermal insulation performance of fire retardant coatings for steel structures proposed in the utility model;

[0021] Figure 5 The utility model discloses an exploded schematic diagram of an L-shaped rod, a movable rod and a rocker arm for testing the heat insulation performance of fire retardant coatings for steel structures.

[0022] In the figure: 1. combustion box; 2. box cover; 3. digital display screen; 4. temperature sensor; 5. steel structure; 6. fixing frame; 7. fixing plate; 8. flamethrower; 9. clamping mechanism; 10. reciprocating mechanism; 11. motor; 12. base; 101. strip hole; 102. strip groove; 103. first sealing gasket; 201. observation window; 202. handle; 203. second sealing gasket; 901. first limit plate; 902. second limit plate; 903. handle; 1001. L-shaped rod; 1002. limit groove; 1003. movable rod; 1004. movable groove; 1005. rocker; 1006. connecting rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] Reference Figure 1-Figure 5A thermal insulation performance testing device includes a combustion box 1, a box cover 2 is hinged on the combustion box 1, an observation window 201 is arranged on the box cover 2, the observation window 201 is made of fireproof glass, a handle 202 is fixedly connected to the top of the box cover 2, a digital display screen 3 is arranged on the outer wall of one side of the combustion box 1, the digital display screen 3 can monitor the temperature change in real time, and it is convenient to record the detection data, the inner walls on both sides of the combustion box 1 are symmetrically fixed with fixed plates 7, and fixed frames 6 are symmetrically arranged in the combustion box 1. The two fixed frames 6 are respectively connected to the corresponding fixed plates 7 by bolts, and the fixed frames 6 can be replaced as needed to adapt to steel structures 5 of different widths. The two fixed frames 6 A steel structure 5 is arranged between them, a temperature sensor 4 is arranged on one side of the steel structure 5, the temperature sensor 4 is connected to the digital display screen 3, the temperature sensor 4 is adhered to the steel structure 5 with Teflon tape, and it is convenient to remove at any time, a strip groove 102 is arranged on the inner wall of one side of the combustion box 1, a clamping mechanism 9 is slidably connected in the strip groove 102, a flamethrower 8 is clamped in the clamping mechanism 9, a strip hole 101 is arranged on one side of the combustion box 1, the position and size of the strip groove 102 and the strip hole 101 are the same, so as to ensure that the flamethrower 8 and the clamping mechanism 9 are in a horizontal state, a reciprocating mechanism 10 is arranged in the strip hole 101, and the reciprocating mechanism 10 is connected with the clamping mechanism 9 The outer wall of one side of the combustion box 1 is fixedly connected to the base 12, the top of the base 12 is fixedly connected to the motor 11, the output shaft of the motor 11 is connected to the reciprocating mechanism 10, the reciprocating mechanism 10 includes an L-shaped rod 1001, the L-shaped rod 1001 is slidably connected in the strip hole 101, one end of the L-shaped rod 1001 extends into the combustion box 1 and is fixedly connected to the first limiting plate 901, the other end of the L-shaped rod 1001 extends outside the combustion box 1, a limiting groove 1002 is provided on the side of the L-shaped rod 1001 away from the combustion box 1, a movable rod 1003 is slidably connected in the limiting groove 1002, and the movable rod 1003 extends to the limiting groove 1002. In addition, the output shaft of the motor 11 rotates to drive the rocker 1005 to rotate, and then the L-shaped rod 1001 is driven up and down by the movable rod 1003, so as to finally achieve the effect of making the flamethrower 8 reciprocate up and down to evenly heat the steel structure 5. The movable rod 1003 is provided with a movable groove 1004 on the side close to the combustion box 1, and the movable groove 1004 is slidably connected with the rocker 1005, and the rocker 1005 extends to the outside of the movable groove 1004 and one end of the rocker 1005 is fixedly connected to the output shaft of the motor 11, and one side of the movable rod 1003 is rotatably connected with a connecting rod 1006, and one end of the connecting rod 1006 is fixedly connected to the outer wall of the combustion box 1.

[0026] A first sealing gasket 103 is fixedly connected to the bottom of the combustion box 1, and a second sealing gasket 203 is fixedly connected to the inner side of the box cover 2. The top and bottom of the fixing frame 6 are in contact with the second sealing gasket 203 and the first sealing gasket 103 respectively. The first sealing gasket 103 and the second sealing gasket 203 are both made of high temperature resistant materials. After closing the box cover 2, a good sealing effect can be achieved to prevent the heat generated by the flame from affecting the detection result of the temperature sensor 4, thereby increasing the detection accuracy. The clamping mechanism 9 includes a first limiting plate 901 and a second limiting plate 902. One side of the first limiting plate 901 extends into the strip groove 102 and is slidably connected to the strip groove 102, one side of the second limiting plate 902 is rotatably connected to the first limiting plate 901, one side of the first limiting plate 901 is connected to the reciprocating mechanism 10, the first limiting plate 901 and the second limiting plate 902 are both semicircular in the middle, and jointly clamp the flamethrower 8, the bolts on the second limiting plate 902 can be tightened to fix the flamethrower 8, and the flamethrower 8 is located in the circular hole gap formed between the first limiting plate 901 and the second limiting plate 902.

[0027] The present application can be used in the field of fire retardant coating performance testing, and can also be used in other fields applicable to the present application.

[0028] The digital display screen 3, the temperature sensor 4 and the flamethrower 8 may be the same as those disclosed in the patent publication number CN214201259U.

[0029] Example 2

[0030] Reference Figure 3 , improved on the basis of Example 1: a device for testing the thermal insulation performance of fire retardant coatings for steel structures, which is applied to the field of fire retardant coating performance testing, a handle 903 is provided on one side of the first limiting plate 901, and the first limiting plate 901 and the second limiting plate 902 are connected by bolts.

[0031] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 11 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing the thermal insulation performance of fire retardant coatings for steel structures, comprising a combustion box (1), characterized in that: The combustion box (1) is hingedly provided with a box cover (2), an outer wall of one side of the combustion box (1) is provided with a digital display screen (3), inner walls of both sides of the combustion box (1) are symmetrically fixedly connected with fixing plates (7), and fixing frames (6) are symmetrically provided inside the combustion box (1), and the two fixing frames (6) are respectively connected to the corresponding fixing plates (7) by bolts; Two fixing frames (6) are used to fix the steel structure (5); A temperature sensor (4) is fixed to one side of the steel structure (5) and is used to monitor the temperature; A strip groove (102) is provided on the inner wall of one side of the combustion box (1), a clamping mechanism (9) is slidably connected in the strip groove (102), a flamethrower (8) is clamped in the clamping mechanism (9), a strip hole (101) is provided on one side of the combustion box (1), a reciprocating mechanism (10) is arranged in the strip hole (101), the reciprocating mechanism (10) is connected to the clamping mechanism (9), an outer wall of one side of the combustion box (1) is fixedly connected to a base (12), a motor (11) is fixedly connected to the top of the base (12), and an output shaft of the motor (11) is connected to the reciprocating mechanism (10).

2. A device for testing the thermal insulation performance of fire retardant coatings for steel structures according to claim 1, characterized in that: The bottom of the combustion box (1) is fixedly connected to a first sealing gasket (103), the inner side of the box cover (2) is fixedly connected to a second sealing gasket (203), and the top and bottom of the fixing frame (6) are in contact with the second sealing gasket (203) and the first sealing gasket (103) respectively.

3. A device for testing the thermal insulation performance of fire retardant coatings for steel structures according to claim 1, characterized in that: The clamping mechanism (9) comprises a first limiting plate (901) and a second limiting plate (902); one side of the first limiting plate (901) extends into the strip groove (102) and is slidably connected to the strip groove (102); one side of the second limiting plate (902) is rotatably connected to the first limiting plate (901); and one side of the first limiting plate (901) is connected to the reciprocating mechanism (10).

4. A device for testing the thermal insulation performance of fire retardant coatings for steel structures according to claim 1, characterized in that: The flamethrower (8) is located in a circular hole gap formed between the first limiting plate (901) and the second limiting plate (902); a handle (903) is provided on one side of the first limiting plate (901); and the first limiting plate (901) and the second limiting plate (902) are connected by bolts.

5. The device for testing the thermal insulation performance of fire retardant coating for steel structure according to claim 1, characterized in that: The reciprocating mechanism (10) comprises an L-shaped rod (1001), the L-shaped rod (1001) is slidably connected in the strip hole (101), one end of the L-shaped rod (1001) extends into the combustion box (1) and is fixedly connected to the first limiting plate (901), the other end of the L-shaped rod (1001) extends outside the combustion box (1), a limiting groove (1002) is provided on the side of the L-shaped rod (1001) away from the combustion box (1), a movable rod (1003) is slidably connected in the limiting groove (1002), and the movable rod (1003) extends outside the limiting groove (1002).

6. A device for testing the thermal insulation performance of fire retardant coatings for steel structures according to claim 5, characterized in that: A movable groove (1004) is provided on a side of the movable rod (1003) close to the combustion box (1), a rocker (1005) is slidably connected in the movable groove (1004), the rocker (1005) extends out of the movable groove (1004) and one end of the rocker (1005) is fixedly connected to the output shaft of the motor (11), a connecting rod (1006) is rotatably connected to one side of the movable rod (1003), and one end of the connecting rod (1006) is fixedly connected to the outer wall of the combustion box (1).

7. A device for testing the thermal insulation performance of fire retardant coatings for steel structures according to claim 5, characterized in that: An observation window (201) is provided on the box cover (2), and a handle (202) is fixedly connected to the top of the box cover (2).

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