A device for monitoring the coefficient of expansion of a coal pipe

Abstract

The present application belongs to the technical field of coal dust pipe, especially to a device for monitoring the expansion coefficient of coal dust pipe, comprising a pipeline, the outer surface of the pipeline is provided with a light shielding layer, one side of the pipeline is provided with a temperature detection mechanism, the outer surface of the pipeline is provided with a positioning mechanism, the top of the positioning mechanism is provided with a U-shaped plate, and the top of the U-shaped plate is fixedly connected with a fixing box. The present application detects the range of the light shielding layer through the setting of the light beam emitter and the light beam receiver, then measures and calculates the electric shock plate and the electric shock block through the current detection mechanism, realizes the detection of the deformation length of the light shielding layer, makes the light intensity of the light beam receiver monitor the deformation of the light shielding layer at any time, and the light shielding layer is fixed on the surface of the pipeline, so that the expansion deformation of the pipeline is monitored at any time, and the problem that the existing expansion coefficient tester is difficult to monitor the coal dust pipeline in real time, the fatigue deformation or serious expansion of the coal dust pipeline during use is difficult to be found, and the coal dust leakage caused by the rupture of the coal dust pipeline is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal powder pipe, in particular to a device for monitoring the expansion coefficient of a coal powder pipe. BACKGROUND

[0002] The coal powder pipe refers to a pipe used for transporting coal powder in a boiler of a thermal power plant. The coal powder pipe is prone to surface heating due to external or internal friction factors, and the expansion coefficient is a physical quantity representing the degree of increase in length, area and volume of an object when heated. In the experiment of the expansion coefficient of the pipe, the temperature is adjusted by an expansion coefficient tester, which further affects the temperature of the workpiece, and then the length change of the workpiece is detected by a micrometer, so as to calculate the expansion coefficient.

[0003] In the case of long-term use of the coal powder pipe, fatigue deformation is prone to occur. The existing expansion coefficient tester is difficult to monitor the coal powder pipe in real time, and it is inconvenient to find the fatigue deformation or serious expansion of the coal powder pipe during use, which leads to the phenomenon of coal powder leakage due to the rupture of the coal powder pipe. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a device for monitoring the expansion coefficient of a coal powder pipe, which solves the problem that the existing expansion coefficient tester is difficult to monitor the coal powder pipe in real time, and it is inconvenient to find the fatigue deformation or serious expansion of the coal powder pipe during use, which leads to the phenomenon of coal powder leakage due to the rupture of the coal powder pipe.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a pipeline is provided, an opaque layer is arranged on the outer surface of the pipeline, a temperature detection mechanism is arranged on one side of the pipeline, a positioning mechanism is arranged on the outer surface of the pipeline, a U-shaped plate is arranged on the top of the positioning mechanism, a fixed box is fixedly connected to the top of the U-shaped plate, an alarm is fixedly installed on one side of the inner wall of the fixed box, a storage battery is fixedly installed on the side of the inner wall of the fixed box close to the alarm, a current detection mechanism is fixedly installed on one side of the inner wall of the fixed box, an insulating frame is arranged in the fixed box, an electric shock plate is fixedly connected to the inner wall of the insulating frame, an electric shock block is slidably connected to one side of the electric shock plate, an insulating column is fixedly connected to one side of the electric shock block, a light beam emitter is fixedly installed at the bottom of the insulating column, a light beam receiver is fixedly installed at the bottom of the insulating column, an adjusting mechanism is arranged on one side of the insulating column, and an indicating mechanism is arranged on the fixed box.

[0006] As a preferred technical scheme of the present application, the positioning mechanism comprises two mounting rings, one of the mounting rings is fixedly connected to the top of the U-shaped plate, a positioning column is fixedly connected to one side of each of the two mounting rings, and a rubber sleeve is fixedly connected to one side of the positioning column.

[0007] As a preferred technical scheme of the present application, the indicating mechanism comprises an indicating lamp, one side of the indicating lamp is fixedly installed with a fixed box, one side of the fixed box is fixedly connected with a transparent plate.

[0008] As a preferred technical scheme of the present application, the fixed box is provided with a protection mechanism at the bottom, the inner wall of the fixed box is provided with a display mechanism, and the bottom of the fixed box is provided with a light shielding mechanism.

[0009] As a preferred technical scheme of the present application, the display mechanism comprises a touch control plate, one side of the touch control plate is fixedly connected with a fixed frame, and one side of the fixed frame is fixedly installed with the fixed box.

[0010] As a preferred technical scheme of the present application, the light shielding mechanism comprises a positioning frame, the outer surface of the positioning frame is slidingly connected with the fixed box, the outer surface of the positioning frame is fixedly connected with a fixed plate, one side of the fixed plate is slidingly connected with a positioning rod, the bottom of the positioning rod is fixedly connected with the fixed box, one side of the fixed box is rotatably connected with a control rod, the outer surface of the control rod is threadedly connected with the fixed plate, the outer surface of the positioning rod is fixedly connected with an insulating frame, and the upper surface of the positioning rod is installed with an adjusting mechanism.

[0011] As a preferred technical scheme of the present application, the adjusting mechanism comprises a threaded rod, the outer surface of the threaded rod is threadedly connected with the inner wall of an insulating column, the outer surface of the threaded rod is rotatably connected with the insulating frame, one end of the threaded rod is fixedly connected with an electric motor, the bottom of the electric motor is fixedly connected with a shock-absorbing plate, the bottom of the shock-absorbing plate is fixedly connected with the positioning rod, one side of the insulating frame is fixedly connected with a sliding rod, and the outer surface of the sliding rod is slidingly connected with the insulating column.

[0012] As a preferred technical scheme of the present application, the protection mechanism comprises a connecting block, one side of the connecting block is slidingly connected with a limiting rod, one side of the limiting rod is fixedly connected with the bottom of the fixed box, the outer surface of the limiting rod is provided with a spring, and one side of the spring is fixedly connected with the connecting block.

[0013] As a preferred technical scheme of the present application, one side of the connecting block is fixedly connected with a positioning cylinder, the number of the positioning cylinders is two, the inner wall of one of the positioning cylinders is installed with a temperature detection mechanism, and the inner walls of the two positioning cylinders are coated with an anti-reflection layer.

[0014] As a preferred technical scheme of the present application, the temperature detection mechanism comprises an extension rod, one side of the extension rod is fixedly connected with the inner wall of the positioning cylinder, one side end of the extension rod is fixedly connected with a rectangular block, one side of the rectangular block is fixedly connected with a temperature sensor, and one side of the rectangular block is fixedly connected with a pressure sensor.

[0015] Compared with the prior art, the present application provides a device for monitoring the expansion coefficient of a coal dust pipe, which has the following beneficial effects:

[0016] 1. The device for monitoring the expansion coefficient of a coal dust pipe detects the range of the light shielding layer by setting a light beam emitter and a light beam receiver, then measures and calculates the touch plate and the touch block by a current detection mechanism, realizes the detection of the deformation length of the light shielding layer, and makes the light intensity of the light beam receiver monitor the deformation of the light shielding layer at any time. The light shielding layer is fixed on the surface of the pipe, so that the deformation of the pipe is monitored at any time, and the problem that the existing expansion coefficient tester cannot monitor the coal dust pipe in real time, and it is difficult to find the fatigue deformation or serious expansion of the coal dust pipe during use, resulting in the phenomenon of coal dust leakage caused by the rupture of the coal dust pipe, is solved.

[0017] 2. The device for monitoring the expansion coefficient of a coal dust pipe, the positioning cylinder in the protection mechanism is sleeved on the outside of the pipe, and the light shielding layer is shielded at the same time. The openings on both sides of the positioning cylinder are adapted to the mounting ring, the entry of light on both sides is reduced, and the inner wall of the positioning cylinder is also coated with a coating, further reducing the reflection of light, avoiding the interference of external light on the light beam receiver and the light beam emitter, causing the device to detect the light shielding layer, and reducing the consumption of electric energy.

[0018] 3. The device for monitoring the expansion coefficient of a coal dust pipe, the touch control panel is used for debugging the device, and the detection data in the device is displayed at the same time, which is convenient for subsequent maintenance and detection of the device by the staff. The internal device is powered by a storage battery, so that the device can still work after the external power supply is stopped, reducing the damage of external power changes to the device, and prolonging the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic view of the device for monitoring the expansion coefficient of a coal dust pipe of the present application;

[0020] Figure 2 It is a sectional view of the top view of the fixed box in the device for monitoring the expansion coefficient of a coal dust pipe of the present application;

[0021] Figure 3 It is a sectional view of the side view of the insulation frame in the device for monitoring the expansion coefficient of a coal dust pipe of the present application;

[0022] Figure 4 It is a perspective structural schematic view of the positioning cylinder in the device for monitoring the expansion coefficient of a coal dust pipe of the present application;

[0023] Figure 5 It is a sectional view of the side view of the fixed box in the device for monitoring the expansion coefficient of a coal dust pipe of the present application;

[0024] Figure 6The sectional view of the front view of the fixed box in the device for monitoring the expansion coefficient of the coal powder pipe of the present application;

[0025] Figure 7 The fixed box in the device for monitoring the expansion coefficient of the coal powder pipe of the present application Figure 4 The enlarged schematic view of the structure at A.

[0026] In the figure: 1, display mechanism; 101, touch control board; 102, fixed frame; 2, light shielding layer; 3, temperature detection mechanism; 301, telescopic rod; 302, rectangular block; 303, temperature sensor; 304, pressure sensor; 4, positioning mechanism; 401, mounting ring; 402, positioning column; 403, rubber sleeve; 5, fixed box; 6, indicating mechanism; 601, indicating lamp; 602, transparent plate; 7, light shielding mechanism; 701, positioning frame; 702, fixed plate; 703, positioning rod; 704, control rod; 8, protection mechanism; 801, positioning cylinder; 802, connecting block; 803, limiting rod; 804, spring; 9, adjusting mechanism; 901, threaded rod; 902, sliding rod; 903, shock absorbing plate; 904, motor; 10, electric contact plate; 11, electric contact block; 12, insulating column; 13, light beam emitter; 14, light beam receiver; 15, current detection mechanism; 16, insulating frame; 17, U-shaped plate; 18, alarm; 19, pipe; 20, storage battery. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0028] EMBODIMENT

[0029] Please refer to Figures 1-7In the embodiment, the pipeline 19 is provided with the light shielding layer 2 on the outer surface, one side of the pipeline 19 is provided with the temperature detection mechanism 3, the outer surface of the pipeline 19 is provided with the positioning mechanism 4, the top of the U-shaped plate 17 is fixedly connected with the fixed box 5, the inner wall of the fixed box 5 is fixedly installed with the alarm 18 on one side, the inner wall of the fixed box 5 is fixedly installed with the storage battery 20 on the side close to the alarm 18, the inner wall of the fixed box 5 is fixedly installed with the current detection mechanism 15 on one side, the inside of the fixed box 5 is provided with the insulation frame 16, the inner wall of the insulation frame 16 is fixedly connected with the live wire plate 10, the live wire block 11 is slidably connected with one side of the live wire plate 10, the insulation column 12 is fixedly connected with one side of the live wire block 11, the light beam emitter 13 is fixedly installed at the bottom of the insulation column 12, the light beam receiver 14 is fixedly installed at the bottom of the insulation column 12, the insulation column 12 is provided with the adjusting mechanism 9 on one side, the current detection mechanism 15 comprises an ammeter and a voltmeter, the voltmeter detects the voltage between one end of the live wire block 11 and the live wire plate 10, one end of the live wire plate 10 is connected in series with the storage battery 20 through a wire, one end of the live wire block 11 is connected in series with the ammeter in the current detection mechanism 15, the resistance between the live wire plate 10 and the live wire block 11 is calculated according to the relationship between the current and the voltage, then the length is obtained according to the relationship between the resistance and the length of the live wire plate 10, and the axes of the light beam emitter 13 and the light beam receiver 14 are extended to intersect the surface of the pipeline 19 and are symmetrically distributed about the middle part of the insulation column 12.

[0030] In the embodiment, the positioning mechanism 4 comprises two mounting rings 401, one of the mounting rings 401 is fixedly connected with the U-shaped plate 17 at the top, the positioning columns 402 are fixedly connected with one side of each of the two mounting rings 401 close to each other, the rubber sleeves 403 are fixedly connected with one side of the positioning columns 402, the rubber sleeves 403 are fixed between the positioning columns 402 by using glue, the positioning columns 402 are fixed between the mounting rings 401 by welding, the two mounting rings 401 are fixed between each other by bolts, the positioning columns 402 are T-shaped, the contact area of the rubber sleeves 403 is increased, the rubber sleeves 403 are made of heat-resistant and pressure-resistant rubber, the fixed box 5 is provided with the indicating mechanism 6, the indicating mechanism 6 comprises the indicating lamp 601, one side of the indicating lamp 601 is fixedly installed with the fixed box 5, the fixed box 5 is fixedly connected with the transparent plate 602 on one side, two circular holes are formed in the surface of the fixed box 5, one of the circular holes is located on one side of the indicating lamp 601, then the transparent plate 602 is arranged inside, the indicating lamp 601 is observed, the indicating lamp 601 is connected in series with the ammeter, then the storage battery 20 is connected in series through a wire, and a switch is arranged, the indicating lamp 601 is turned on and off, and the on and off states are observed directly.

[0031] The bottom of the fixed box 5 is provided with a protection mechanism 8, the inner wall of the fixed box 5 is provided with a display mechanism 1, the bottom of the fixed box 5 is provided with a light shielding mechanism 7, the light shielding mechanism 7 is convenient for further reducing the interference of external light on the light beam receiver 14 by reducing the external light entering through the protection mechanism 8, the display mechanism 1 comprises a touch control panel 101, one side of the touch control panel 101 is fixedly connected with a fixed frame 102, one side of the fixed frame 102 is fixedly installed with the fixed box 5, the touch control panel 101 is convenient for data display and staff control, the inside of the fixed box 5 is provided with a controller and a running processor, the controller and the running processor are installed and operated in an existing manner, the light shielding mechanism 7 comprises a positioning frame 701, the outer surface of the positioning frame 701 is slidably connected with the fixed box 5, the outer surface of the positioning frame 701 is fixedly connected with a fixed plate 702, one side of the fixed plate 702 is slidably connected with a positioning rod 703, the bottom of the positioning rod 703 is fixedly connected with the fixed box 5, one side of the fixed box 5 is rotatably connected with a control rod 704, the outer surface of the control rod 704 is threadedly connected with the fixed plate 702, the outer surface of the positioning rod 703 is fixedly connected with an insulating frame 16, the upper surface of the positioning rod 703 is installed with an adjusting mechanism 9, the surface of the control rod 704 is provided with threads, and the bottom is provided with a hexagonal hole, which is convenient for rotating the control rod 704 to drive the positioning frame 701 to move up and down, the number of the fixed plate 702 is two, and the two fixed plates 702 are symmetrically distributed about the middle part of the positioning frame 701, the adjusting mechanism 9 comprises a threaded rod 901, the outer surface of the threaded rod 901 is threadedly connected with the inner wall of the insulating column 12, the outer surface of the threaded rod 901 is rotatably connected with the insulating frame 16, one end of the threaded rod 901 is fixedly connected with a motor 904, the bottom of the motor 904 is fixedly connected with a damping plate 903, the bottom of the damping plate 903 is fixedly connected with the positioning rod 703, one side of the insulating frame 16 is fixedly connected with a sliding rod 902, the outer surface of the sliding rod 902 is slidably connected with the insulating column 12, the number of the positioning rod 703 is two, the damping plate 903 is connected with one of the positioning rods 703, the threaded rod 901 adopts a one-way screw rod, the sliding rod 902 limits the rotation of the insulating column 12, so that the insulating column 12 moves on the threaded rod 901, and the position of the insulating column 12 is adjusted by the motor 904.

[0032] The protection mechanism 8 comprises a connecting block 802, one side surface of the connecting block 802 is slidably connected with a limiting rod 803, one side surface of the limiting rod 803 is fixedly connected with the bottom of the fixed box 5, the outer surface of the limiting rod 803 is provided with a spring 804, one side surface of the spring 804 is fixedly connected with the connecting block 802, the limiting rod 803 is in T shape, and the surface with a small diameter penetrates through the spring 804, the connecting block 802 is driven to move by the spring 804, and the other end of the spring 804 is fixedly connected with the side surface with a larger diameter of the limiting rod 803, one side surface of the connecting block 802 is fixedly connected with a positioning cylinder 801, the inner walls of the two positioning cylinders 801 are respectively installed with the temperature detection mechanism 3, the inner walls of the two positioning cylinders 801 are respectively coated with an anti-reflection layer, the anti-reflection layer and the shading layer 2 in the application adopt a Vantaback Vbx2 coating layer, the reflection of light is reduced, the two side semicircular openings of the positioning cylinder 801 are adapted with the arc of the mounting ring 401, the shading effect is achieved, and the existing coating method is adopted, the temperature detection mechanism 3 comprises a telescopic rod 301, one side surface of the telescopic rod 301 is fixedly connected with the inner wall of the positioning cylinder 801, one side end of the telescopic rod 301 is fixedly connected with a rectangular block 302, one side surface of the rectangular block 302 is fixedly connected with a temperature sensor 303, one side surface of the rectangular block 302 is fixedly connected with a pressure sensor 304, the pressure sensor 304 and the temperature sensor 303 are located on the same side and are coplanar away from one side of the rectangular block 302, the surface of the pipeline 19 is contacted by detecting the pressure through the pressure sensor 304, and the surface of the pipeline 19 contacted by the temperature detection mechanism 3 is located on one side of the shading layer 2.

[0033] The working principle and use process of the application are as follows: in use, first, the Vantaback Vbx2 coating layer is coated on the surface of the pipeline 19 to form the shading layer 2, then the device is sleeved on the outer side of the pipeline 19 through the mounting ring 401, then the two mounting rings 401 are fixed through bolts, the inner side of the mounting ring 401 is extruded on the surface of the pipeline 19 through the rubber sleeve 403 on the surface of the positioning column 402, the device is fixed on the outer side of the pipeline 19, then the telescopic rod 301 drives the rectangular block 302 to move, the rectangular block 302 drives the pressure sensor 304 to abut against the surface of the pipeline 19, the pressure sensor 304 is further controlled to stop moving after detecting the pressure, the temperature sensor 303 abuts against the surface of the pipeline 19, the temperature of the surface of the pipeline 19 is detected, then the motor 904 is controlled to work, the motor 904 drives the threaded rod 901 to rotate, the threaded rod 901 drives the insulating column 12 to move through the sliding rod 902, and the insulating column 12 drives the light beam emitter 13 to move.

[0034] The light beam emitter 13 is moved to align with the light shielding layer 2, the light beam emitter 13 is controlled to irradiate the pipeline 19, the light shielding layer 2 on the surface of the pipeline 19 is reflected to the light intensity recording in the light beam receiver 14, then the light beam emitter 13 is moved by the control motor 904 to just move away from the position of the light shielding layer 2, the intensity of the light beam receiver 14 is recorded at the same time, then the storage battery 20 is turned on to connect the storage battery 20 with the indicator light 601, the electric contact plate 10, the electric contact block 11 and the current detection mechanism 15, the current and the voltage between one end of the electric contact plate 10 and the electric contact block 11 are detected through the current detection mechanism 15, the resistance between the electric contact plate 10 and the electric contact block 11 is calculated through U=R*I, then the length at this time is calculated through R=ρL / S, then the control motor 904 is controlled to move the light beam emitter 13 to the other side of the light shielding layer 2, and the length is calculated again.

[0035] The initial width of the light shielding layer 2 is calculated by the difference between the two lengths, and the light beam emitter 13 is stopped at one of the two sides of the light shielding layer 2, then when the pipeline 19 is deformed due to fatigue, the surface of the pipeline 19 is stretched to drive the light shielding layer 2 to move, so that the light shielding layer 2 is deformed and shields the light beam emitter 13, resulting in a decrease in the light intensity of the light beam receiver 14, the control motor 904 detects the extreme points on the two sides of the light shielding layer 2 again to recalculate the length of the light shielding layer 2 at this time, and in the measurement, the light beam emitter 13 is moved to a position far away from the light shielding layer 2, then gradually approaches the light shielding layer 2, and the range of the light shielding layer 2 is determined by the light intensity of the light beam receiver 14, when the stretching length of the light shielding layer 2 is too large, the alarm 18 is directly controlled to alarm to prompt the staff to maintain and replace the pipeline.

[0036] Then when the pipeline 19 is deformed due to thermal expansion, the temperature change of the surface of the pipeline 19 is monitored in real time by the temperature detection mechanism 3, and the temperature change is calculated, and the light shielding layer 2 is deformed, the light beam emitter 13 is moved again by the motor 904 to calculate the deformation length of the light shielding layer 2, and the expansion coefficient is calculated by combining the temperature change through α=ΔL / (L*ΔT), and the expansion coefficient of the material is compared, when the deviation is large or the numerical value is wrong, the alarm 18 is controlled to alarm, so that the deformation of the pipeline 19 is monitored in real time, and the deformation of the pipeline 19 is alarmed in advance to avoid the rupture of the pipeline 19 to cause coal powder leakage.

[0037] In the description of the application, the terms "comprising" or "including" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising a cited element" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element. It should be noted that the relational terms such as "first", "second" and the like in this text are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

[0038] Finally, it should be noted that the above description is only for the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for monitoring the expansion coefficient of a pulverized coal pipe, comprising a pipe (19), characterized in that: The outer surface of the pipe (19) is provided with a light shielding layer (2), a temperature detection mechanism (3) is provided on one side of the pipe (19), a positioning mechanism (4) is provided on the outer surface of the pipe (19), a U-shaped plate (17) is provided on the top of the positioning mechanism (4), a fixed box (5) is fixedly connected to the top of the U-shaped plate (17), an alarm (18) is fixedly installed on one side of the inner wall of the fixed box (5), a battery (20) is fixedly installed on the side of the inner wall of the fixed box (5) close to the alarm (18), and a current detection mechanism (20) is fixedly installed on one side of the inner wall of the fixed box (5). The fixed box (5) is provided with an insulating frame (16) inside, an electric shock plate (10) is fixedly connected to the inner wall of the insulating frame (16), a side of the electric shock plate (10) is slidably connected to a electric shock block (11), a side of the electric shock block (11) is fixedly connected to an insulating column (12), a light beam transmitter (13) is fixedly installed at the bottom of the insulating column (12), a light beam receiver (14) is fixedly installed at the bottom of the insulating column (12), an adjusting mechanism (9) is provided on one side of the insulating column (12), and an indicating mechanism (6) is provided on the fixed box (5).

2. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 1, characterized in that: The positioning mechanism (4) comprises two mounting rings (401), wherein the top of one of the mounting rings (401) is fixedly connected to the U-shaped plate (17), and the sides of the two mounting rings (401) close to each other are fixedly connected to positioning columns (402), and one side of the positioning columns (402) is fixedly connected to a rubber sleeve (403).

3. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 1, characterized in that: The indicating mechanism (6) comprises an indicator light (601), one side of which is fixedly mounted on a fixed box (5), and one side of which is fixedly connected to a transparent plate (602).

4. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 1, characterized in that: The bottom of the fixed box (5) is provided with a protection mechanism (8), the inner wall of the fixed box (5) is provided with a display mechanism (1), and the bottom of the fixed box (5) is provided with a shading mechanism (7).

5. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 4, characterized in that: The display mechanism (1) comprises a touch control panel (101), one side of the touch control panel (101) is fixedly connected to a fixing frame (102), and one side of the fixing frame (102) is fixedly mounted to a fixing box (5).

6. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 4, characterized in that: The shading mechanism (7) comprises a positioning frame (701), the outer surface of the positioning frame (701) is slidably connected to the fixed box (5), the outer surface of the positioning frame (701) is fixedly connected to a fixed plate (702), one side of the fixed plate (702) is slidably connected to a positioning rod (703), the bottom of the positioning rod (703) is fixedly connected to the fixed box (5), one side of the fixed box (5) is rotatably connected to a control rod (704), the outer surface of the control rod (704) is threadedly connected to the fixed plate (702), the outer surface of the positioning rod (703) is fixedly connected to the insulating frame (16), and the upper surface of the positioning rod (703) is mounted on the adjustment mechanism (9).

7. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 6, characterized in that: The adjustment mechanism (9) comprises a threaded rod (901), the outer surface of the threaded rod (901) being threadedly connected to the inner wall of the insulating column (12), the outer surface of the threaded rod (901) being rotatably connected to the insulating frame (16), one end of the threaded rod (901) being fixedly connected to a motor (904), the bottom of the motor (904) being fixedly connected to a damping plate (903), the bottom of the damping plate (903) being fixedly connected to a positioning rod (703), a side surface of the insulating frame (16) being fixedly connected to a sliding rod (902), the outer surface of the sliding rod (902) being slidably connected to the insulating column (12).

8. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 4, characterized in that: The protection mechanism (8) comprises a connecting block (802), one side of the connecting block (802) is slidably connected to a limiting rod (803), one side of the limiting rod (803) is fixedly connected to the bottom of the fixed box (5), and a spring (804) is provided on the outer surface of the limiting rod (803), one side of the spring (804) is fixedly connected to the connecting block (802).

9. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 8, characterized in that: A positioning cylinder (801) is fixedly connected to one side of the connecting block (802), and there are two positioning cylinders (801). The inner wall of one of the positioning cylinders (801) is mounted with a temperature detection mechanism (3), and the inner walls of the two positioning cylinders (801) are both coated with an anti-reflective layer.

10. The device for monitoring the expansion coefficient of a pulverized coal pipe according to claim 9, characterized in that: The temperature detection mechanism (3) comprises a telescopic rod (301), one side of the telescopic rod (301) is fixedly connected to the inner wall of the positioning cylinder (801), one side end of the telescopic rod (301) is fixedly connected to a rectangular block (302), one side of the rectangular block (302) is fixedly connected to a temperature sensor (303), and one side of the rectangular block (302) is fixedly connected to a pressure sensor (304).

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