Device for detecting thermal insulation performance of aerogel coating

Abstract

The invention discloses an aerogel coating thermal insulation performance detection device, and belongs to the technical field of coating detection, the aerogel coating thermal insulation performance detection device comprises a detection table and two semi-ring simulation covers used for detecting simulation tubes, and the top end of the detection table is connected with two oppositely arranged control motors through two mounting seats. Through the arrangement of the tooth pressure assembly, a driving gear and a driven gear can be engaged to drive hot air flow, the heating state in a pipeline is accurately simulated, a double-temperature sensing system realizes real-time monitoring of the temperature difference inside and outside a simulation pipe in different simulation states, and the thermal insulation performance difference of inner and outer cambered surfaces in different bending states is tested; meanwhile, through arrangement of an annular measuring assembly and an adjusting rack, the coating thickness of the outer side wall of the simulation pipe can be scanned in an arc-shaped mode through a distance measuring sensor by means of meshing movement changes between the adjusting rack and arc-shaped teeth, whether self-flowing hanging occurs when aerogel paint is sprayed on the arc face or not, and the situation that the coating is uneven is analyzed; the adhesiveness of the aerogel coating can be conveniently detected.

Description

Technical Field

[0001] The present invention relates to the technical field of coating detection, and particularly to a device for detecting the heat insulation performance of aerogel coatings. Background Art

[0002] Aerogel is a nano-porous material prepared from gel by supercritical drying technology. The porous structure of aerogel can effectively block heat conduction and heat convection, with an extremely low thermal conductivity. Its heat insulation performance is 2-5 times that of traditional materials, making it suitable for extreme temperature environments. Aerogel coatings are functional coatings made by combining aerogel particles or powders with a polymer matrix, possessing both the excellent properties of aerogel and the construction convenience of coatings.

[0003] With the continuous innovation and development of aerogel coating technology, aerogel coatings are increasingly widely used in industrial heat pipelines and cable protection. When aerogel coatings are used on heat pipelines and cables, since most of the heat pipelines and cables in cities need to be buried underground, the aerogel coatings used as thermal insulation layers will be eroded for a long time underground. To ensure the safety of heat pipelines and cables used underground, it is necessary to ensure that the aerogel coatings still have excellent heat insulation performance under erosion conditions. Additionally, when laying some heat pipelines and cables, local bending is required. When the annular surface sprayed with aerogel coating is bent, the outer bent surface will be stretched and the inner bent surface will be compressed. In this state, the heat insulation performance of the aerogel coating on the overall annular surface is easily affected. At the same time, after the aerogel coating is applied on the arc surface, under the action of gravity, the aerogel coating is more likely to flow downwards, resulting in uneven coating on the arc surface. Therefore, a device for detecting the heat insulation performance of aerogel coatings is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art, and a device for detecting the heat insulation performance of aerogel coatings is proposed.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A device for detecting the heat insulation performance of aerogel coatings includes a detection table and two semi-circular simulation covers for detecting simulation tubes. At the top of the detection table, two relatively arranged control motors are connected through two mounting seats. The control motors are connected to a pipe sealing seat through a driving shaft. The pipe sealing seat is connected to an internal heat cavity through a pipe sealing component. The port of the internal heat cavity is connected to a tooth pressing component for opening the heating inside the simulation tube. The tooth pressing component is connected to two opposite skeleton disks, and a limiting component is arranged between the two skeleton disks; An erosion box is provided on the outer side wall of the semi-circular simulation cover. The erosion box is connected with a plurality of simulation arc tubes through a conveying pipe. One side of the simulation arc tube is connected with an arc-shaped guide rail. The inner side wall of the arc-shaped guide rail is connected with a ring measurement component for detecting the thickness of the aerogel on the simulation tube. The other side of the simulation arc tube is connected with a temperature measurement arc plate through a fixing rod. The inner side wall of the temperature measurement arc plate is connected with a plurality of external temperature sensors. The two temperature measurement arc plates on two opposite simulation arc tubes are arranged in a staggered manner.

[0006] Preferably, two opposite electric control guide rails are fixedly connected to the top end of the detection table. The inner side walls of the electric control guide rails are slidably connected with two guide seats. The top ends of the guide seats are fixedly connected with the outer side wall of the semi-circular simulation cover through a support component.

[0007] Preferably, the pipe sealing component is composed of a support telescopic rod and two electric control clamping plates. An annular sealing groove is opened at the end of the pipe sealing seat. The inner end surface of the annular sealing groove is fixedly connected with the fixed end of the support telescopic rod. The piston rod end of the support telescopic rod is fixedly connected with the inner heat cavity. The end of the pipe sealing seat is respectively connected with two electric control clamping plates.

[0008] Preferably, the tooth pressing component is composed of a driving gear and a driven gear. The driving gear and the driven gear are meshed with each other. A lower discharge hole is opened at the end of the inner heat cavity. An adapter gear box is fixedly connected to the end of the inner heat cavity. The top of the adapter gear box is communicated with an exhaust hood.

[0009] Preferably, both the driving gear and the driven gear are rotatably connected with the adapter gear box. The driving gear is rotatably connected with the skeleton disk through a rotating shaft. An electric heating component is arranged in the inner heat cavity. An inert gas is filled in the inner heat cavity.

[0010] Preferably, the limiting component is composed of two relatively arranged electromagnetic rings. A plurality of dissipation holes are opened on the skeleton disk. The inner side wall of the dissipation hole is rotatably connected with an impeller part through a through plate. The two skeleton disks are connected through a connecting rod, and the middle of the connecting rod is a corrugated hose structure. The connecting rod is respectively connected with the two electromagnetic rings through a plurality of adjusting telescopic rods. A plurality of rubber support plates are fixedly connected to the adjacent end faces of the two skeleton disks. The rubber support plates are connected with an internal temperature sensor. The outermost ends of the two skeleton disks in the middle are fixedly connected with electromagnetic limit posts.

[0011] Preferably, a plurality of spray ports are opened on the inner arc side wall of the simulation arc tube. An erosion liquid is filled in the erosion box. A plurality of heat radiation plates are fixedly connected to the inner side wall of the semi-circular simulation cover.

[0012] Preferably, the ring measurement component is composed of an arc tooth and a distance measurement sensor. The inner side wall of the arc guide rail is slidably connected to the arc tooth. One side wall of the arc tooth is fixedly connected to the distance measurement sensor. A flat seat is fixedly connected to the outer side wall of the arc guide rail. The top end of the flat seat is rotatably connected to a limit rotating plate through a pin shaft, and a strong torsion spring is sleeved on the outer side wall of the pin shaft.

[0013] Preferably, the inner side wall of the semi-circular simulation cover is connected with a plurality of adjustment rack bars through a plurality of adjustment telescopic rods. The adjustment rack bars and the opposite arc teeth are in the same plane and mesh with each other. The rotational elastic force of the strong torsion spring is greater than the elastic force of the adjustment telescopic rods.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the setting of the tooth pressing component in this solution, the hot air flow can be driven by the meshing of the driving gear and the driven gear, accurately simulating the heat generation state inside the pipeline. The dual temperature sensing system can monitor the temperature difference between the inside and outside of the simulation pipe in real time under different simulation states, and test the difference in the heat preservation performance of the inner and outer arc surfaces under different bending states.

[0015] 2. Through the setting of the ring measurement component and the adjustment rack bar in this solution, the meshing movement change between the adjustment rack bar and the arc tooth can be utilized to enable the distance measurement sensor to perform an arc scan on the coating thickness of the outer side wall of the simulation pipe, and analyze whether the aerogel coating flows down by itself when sprayed on the arc surface, resulting in uneven coating, so as to facilitate the detection of the adhesion of the aerogel coating.

[0016] 3. Through the setting of a plurality of simulation arc pipes in this solution, the erosion working conditions of the aerogel coating on the surface of the simulation pipe by liquids with different pH values can be simulated by using the erosion liquid annular spraying system, and how the heat preservation and heat insulation performance inside and outside the simulation pipe changes can be tested. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of a device for detecting the heat preservation performance of an aerogel coating proposed by the present invention; Figure 2 is Figure 1 the enlarged view of part A in Figure 3 is an assembly diagram of a device for detecting the heat preservation performance of an aerogel coating proposed by the present invention; Figure 4 is Figure 3 the enlarged view of part B in Figure 5 is a structural schematic diagram of the inside of the simulation pipe in a device for detecting the heat preservation performance of an aerogel coating proposed by the present invention; Figure 6 is a structural schematic diagram of the tooth pressing component in a device for detecting the heat preservation performance of an aerogel coating proposed by the present invention; Figure 7 Schematic structural diagram of the limiting component in a device for detecting the heat insulation performance of an aerogel coating proposed by the present invention; Figure 8 Schematic structural diagram of the interior of a semi-circular simulation cover in a device for detecting the heat insulation performance of an aerogel coating proposed by the present invention; Figure 9 Schematic structural diagram of the ring measurement component in a device for detecting the heat insulation performance of an aerogel coating proposed by the present invention; Figure 10 Schematic structural diagram of the positions of the arc-shaped teeth and the adjustment rack in a device for detecting the heat insulation performance of an aerogel coating proposed by the present invention.

[0018] In the figure: 1, detection table; 2, semi-circular simulation cover; 3, simulation tube; 4, electric control guide rail; 5, guide seat; 6, control motor; 7, pipe sealing seat; 8, support telescopic rod; 9, electric control clamping plate; 10, internal heat cavity; 11, adapter gear box; 12, driving gear; 13, driven gear; 14, exhaust hood; 15, skeleton disc; 16, impeller part; 17, rubber support plate; 18, internal measurement temperature instrument; 19, adjustment telescopic rod; 20, electromagnetic ring; 21, electromagnetic limit column; 22, erosion box; 23, heat radiation plate; 24, conveying pipe; 25, simulation arc tube; 26, arc-shaped guide rail; 27, arc-shaped teeth; 28, distance measuring sensor; 29, adjustment telescopic rod; 30, adjustment rack; 31, strong torsion spring; 32, limit rotating plate; 33, temperature measuring arc plate; 34, external measurement temperature instrument. Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Example, refer to Figures 1 to 10 , a device for detecting the heat insulation performance of an aerogel coating, comprising a detection table 1 and two semi-circular simulation covers 2 for detecting a simulation tube 3. At the top of the detection table 1, two relatively arranged control motors 6 are connected through two mounting seats. The control motor 6 is connected to a pipe sealing seat 7 through a driving shaft. The pipe sealing seat 7 is connected to an internal heat cavity 10 through a pipe sealing component. The port of the internal heat cavity 10 is connected to a tooth pressing component for opening the heating inside the simulation tube 3. The tooth pressing component is connected to two opposite skeleton disks 15, and a limiting component is arranged between the two skeleton disks 15; Furthermore, two opposite electric control guide rails 4 are fixedly connected to the top of the detection table 1. Two guide seats 5 are slidably connected to the inner side walls of the electric control guide rails 4. The top of the guide seat 5 is fixedly connected to the outer side wall of the semi-circular simulation cover 2 through a support component. The pipe sealing component consists of a support telescopic rod 8 and two electric control clamping plates 9. An annular sealing groove is opened at the end of the pipe sealing seat 7. The inner end face of the annular sealing groove is fixedly connected to the fixed end of the support telescopic rod 8. The piston rod end of the support telescopic rod 8 is fixedly connected to the internal heat cavity 10. The two ends of the pipe sealing seat 7 are respectively connected to the two electric control clamping plates 9. The tooth pressing component consists of a driving gear 12 and a driven gear 13. The driving gear 12 and the driven gear 13 are meshed with each other. A lower discharge hole is opened at the end of the internal heat cavity 10. An adapter gear box 11 is fixedly connected to the end of the internal heat cavity 10. An exhaust hood 14 is communicated with the top of the adapter gear box 11. Both the driving gear 12 and the driven gear 13 are rotatably connected to the adapter gear box 11. The driving gear 12 is rotatably connected to the skeleton disk 15 through a rotating shaft. An electric heating component is arranged inside the internal heat cavity 10. An inert gas is filled inside the internal heat cavity 10. The limiting component consists of two relatively arranged electromagnetic rings 20. A plurality of escape holes are opened on the skeleton disk 15. The inner side wall of the escape hole is rotatably connected to an impeller part 16 through a through plate. The two skeleton disks 15 are connected through a connecting rod, and the middle of the connecting rod is a corrugated hose structure. The connecting rod is respectively connected to the two electromagnetic rings 20 through a plurality of adjusting telescopic rods 19. A plurality of rubber support plates 17 are fixedly connected to the adjacent end faces of the two skeleton disks 15. The rubber support plate 17 is connected to an internal temperature detector 18. The outermost ends of the two middle skeleton disks 15 are fixedly connected to electromagnetic limit posts 21; Among them, the simulation tube 3 is a plastic tube with a certain toughness; It should be noted that: spraying the aerogel coating to be detected evenly on the outer wall of the simulation tube 3, and then standing still and waiting for drying, which is an existing technical means and will not be elaborated here. Subsequently, use the support telescopic rod 8 to move the skeleton disk 15 towards the sealing tube seat 7, and through the bending of the connecting rod between the two skeleton disks 15, insert the skeleton disk 15 into the simulation tube 3. Subsequently, energize the electromagnetic ring 20 so that the two opposite electromagnetic rings 20 magnetically attract and limit each other, and energize the two electromagnetic limit posts 21 so that the two electromagnetic limit posts 21 magnetically attract and limit each other, making the skeleton disks 15 inserted from both ends of the simulation tube 3 limit each other and be in an integrated state, realizing the support and limitation of the simulation tube 3. The end of the simulation tube 3 is inserted into the annular sealing groove in the sealing tube seat 7. Subsequently, use the guide seat 5 to slide in the electric control guide rail 4 to drive the two semi-circular simulation covers 2 to be butted into a relatively sealed state. After the butting is completed, the temperature measuring contact of the external temperature gauge 34 on the temperature measuring arc plate 33 will press tightly on the outer wall of the simulation tube 3; When thermal simulation needs to be carried out inside the simulation tube 3, start the control motor 6 to drive the sealing tube seat 7 to rotate. The rotation of the sealing tube seat 7 will drive the internal heat cavity 10 to rotate, and the rotation of the internal heat cavity 10 will drive the fixed adapter gearbox 11 to rotate together. Then the adapter gearbox 11 will drive the driven gear 13 to revolve on the driving gear 12, realizing the meshing rotation between the driving gear 12 and the driven gear 13. Then the rotation of the driving gear 12 and the driven gear 13 will continuously press out the heated inert gas in the internal heat cavity 10 through the extrusion between the teeth. During the continuous rotation of the exhaust hood 14, it is convenient for the air flow to better disperse inside the simulation tube 3. A large amount of inert gas is pressed out and will flow through the dispersion holes on the skeleton disk 15, thereby driving the impeller part 16 to rotate, realizing the agitation of the air flow, simulating the state of heat generation inside the pipeline during use. Use the internal temperature gauge 18 and the external temperature gauge 34 to measure the temperatures of the inner and outer tube walls of the simulation tube 3, and obtain the heat preservation effect of the aerogel coating according to the temperature difference between the two. Subsequently, cut off the power supply of the electromagnetic ring 20 and the electromagnetic limit post 21, so that the limitation between the skeleton disks 15 is released. At this time, the inside of the simulation tube 3 is in a flexible support state. Subsequently, bend the simulation tube 3 to a certain extent. In this state, repeat the above operations to test whether there will be a large temperature difference between the inner arc part and the outer arc part of the bent part of the simulation tube 3; The benefits based on the above are as follows: In this way, the meshing rotation between the driving gear 12 and the driven gear 13 can be used to press out the hot air flow in the internal heat cavity 10 (in this process, only the gas needs to be pressed out, and the process of pressing out the gas between the driving gear 12 and the driven gear 13 meets the conventional sealing requirements, and the loss of meshing rotation can be ignored), simulating the state of heat generation inside the pipeline during use, detecting the temperature difference situation inside and outside the simulation tube 3 in this state, and at the same time changing the limiting state between the skeleton disks 15 to realize the temperature detection of the inner and outer arc surfaces of the simulation tube 3 after bending, and judging the heat preservation performance of the aerogel coating in the bent state; An erosion box 22 is provided on the outer side wall of the semi-circular simulation cover 2. The erosion box 22 is connected with a plurality of simulation arc tubes 25 through a conveying pipe 24. One side of the simulation arc tube 25 is connected with an arc-shaped guide rail 26. The inner side wall of the arc-shaped guide rail 26 is connected with a ring measurement assembly for detecting the thickness of the aerogel on the simulation tube 3. Furthermore, a plurality of spray ports are formed on the inner arc side wall of the simulation arc tube 25. Erosion liquid is contained in the erosion box 22. A plurality of heat radiation plates 23 are fixedly connected to the inner side wall of the semi-circular simulation cover 2. It should be noted that: during the docking process of the two semi-circular simulation covers 2, the semi-circular simulation cover 2 drives the adjustment rack 30 to move in the direction of the opposite arc-shaped teeth 27 by adjusting the telescopic rod 29. During the movement, the adjustment rack 30 will be blocked by one side surface of the limit rotating plate 32. Since the rotational elastic force of the strong torsion spring 31 on the pin shaft of the limit rotating plate 32 is greater than the elastic force of the adjustment telescopic rod 29, the adjustment rack 30 will continuously compress the adjustment telescopic rod 29. As the two semi-circular simulation covers 2 approach each other, the other side surfaces of the two opposite limit rotating plates 32 will squeeze each other, realizing the mutual rotation of the two limit rotating plates 32. As the included angle between one side surface of the limit rotating plate 32 and the adjustment rack 30 decreases during rotation, the limit on the adjustment rack 30 will be insufficient, and the adjustment rack 30 will be pushed forward under the action of the adjustment telescopic rod 29. At this time, the docking between the two semi-circular simulation covers 2 has been completed synchronously. The movement of the adjustment rack 30 will drive the arc-shaped teeth 27 to slide in the arc-shaped guide rail 26, thereby driving the distance measuring sensor 28 to perform an arc-shaped slide, so that the distance measuring sensor 28 can continuously measure the distance between different parts on the outer side wall of the simulation tube 3 and itself. Based on the above advantages: the data measured by the distance measuring sensor 28 can be used to analyze and judge whether there is a sag situation after the simulation tube 3 is sprayed with aerogel, so that the aerogel coating flows on the arc-shaped pipe wall, resulting in the problem of uneven coating, and the adhesion of the aerogel coating can be detected. The other side of the simulation arc tube 25 is connected with a temperature measuring arc plate 33 through a fixing rod. A plurality of external temperature measuring instruments 34 are connected to the inner side wall of the temperature measuring arc plate 33. The two temperature measuring arc plates 33 on the two opposite simulation arc tubes 25 are arranged in a staggered manner. Furthermore, a plurality of spray ports are formed on the inner arc side wall of the simulation arc tube 25. Erosion liquid is contained in the erosion box 22. A plurality of heat radiation plates 23 are fixedly connected to the inner side wall of the semi-circular simulation cover 2. Further, the loop measurement assembly is composed of an arc-shaped tooth 27 and a ranging sensor 28. The inner side wall of the arc-shaped guide rail 26 is slidably connected to the arc-shaped tooth 27. One end side wall of the arc-shaped tooth 27 is fixedly connected to the ranging sensor 28. A flat seat is fixedly connected to the outer side wall of the arc-shaped guide rail 26. The top end of the flat seat is rotatably connected to a limit rotating plate 32 through a pin shaft. A strong torsion spring 31 is sleeved on the outer side wall of the pin shaft. The inner side wall of the semi-ring simulation cover 2 is connected to a plurality of adjustment racks 30 through a plurality of adjustment telescopic rods 29. The adjustment racks 30 and the opposite arc-shaped teeth 27 are located in the same plane and mesh with each other. The rotational elastic force of the strong torsion spring 31 is greater than the elastic force of the adjustment telescopic rod 29; It should be noted that after the two semi-ring simulation covers 2 are butted, the erosion liquid in the erosion box 22 is pumped into the conveying pipe 24 under pressure, and then evenly sprayed in a ring along the simulation pipe 3 through a plurality of simulation arc pipes 25, so that the outer wall of the simulation pipe 3 can be evenly eroded by the erosion liquid, simulating the state of the pipeline buried underground for a long time being eroded, making the subsequent detection more in line with the actual use situation of the pipeline. Subsequently, the simulation pipe 3 is continuously heated by the heat radiation plate 23; The benefits based on the above are as follows: This can test the heat insulation effect of the aerogel coating on the outer wall of the simulation pipe 3 under the state of high temperature on the outside of the simulation pipe 3. Through the simulation of different scenarios, the detection of the aerogel coating is made more diversified; When the present invention is in use, the aerogel coating to be detected is evenly sprayed on the outer side wall of the simulation pipe 3, and then left to stand and wait for drying. This is an existing technical means and will not be elaborated here. Subsequently, the support telescopic rod 8 is used to move the skeleton disk 15 towards the pipe sealing seat 7, and through the bending of the connecting rod between the two skeleton disks 15, the skeleton disk 15 is inserted into the simulation pipe 3. Subsequently, the electromagnetic ring 20 is energized, so that the two opposite electromagnetic rings 20 are magnetically attracted to each other and limited. The two electromagnetic limit posts 21 are energized, so that the two electromagnetic limit posts 21 are magnetically attracted to each other and limited, so that the skeleton disks 15 inserted from both ends of the simulation pipe 3 are limited to each other and in an integrated state, realizing the support and limitation of the simulation pipe 3. The end of the simulation pipe 3 is inserted into the annular sealing groove in the pipe sealing seat 7. Subsequently, the guide seat 5 slides in the electric control guide rail 4 to drive the two semi-ring simulation covers 2 to be butted into a relatively sealed state. After the butting is completed, the temperature measurement contact of the external temperature gauge 34 on the temperature measurement arc plate 33 will press tightly on the outer wall of the simulation pipe 3; When thermal simulation needs to be carried out in the simulation tube 3, start the control motor 6 to drive the sealing tube base 7 to rotate. The rotation of the sealing tube base 7 will drive the internal heat chamber 10 to rotate, and the rotation of the internal heat chamber 10 will drive the fixed adapter gearbox 11 to rotate together. Then, the adapter gearbox 11 will drive the driven gear 13 to revolve on the driving gear 12, realizing the meshing rotation between the driving gear 12 and the driven gear 13. The rotation of the driving gear 12 and the driven gear 13 will continuously press out the heated inert gas in the internal heat chamber 10 through the extrusion between the teeth. During the continuous rotation of the exhaust hood 14, it is convenient for the air flow to better disperse in the simulation tube 3. A large amount of inert gas is pressed out and flows through the dispersion holes on the skeleton disk 15, thereby driving the impeller part 16 to rotate, realizing the agitation of the air flow, simulating the state of heat generation inside the pipeline during use. The internal temperature detector 18 and the external temperature detector 34 are used to measure the temperatures of the inner and outer tube walls of the simulation tube 3, and the heat insulation effect of the aerogel coating is obtained according to the temperature difference between the two. Subsequently, the electromagnetic ring 20 and the electromagnetic limit post 21 are powered off, so that the limits between the skeleton disks 15 are all released. At this time, the inside of the simulation tube 3 is in a state of flexible support. Then, the simulation tube 3 is bent to a certain extent. In this state, the above operations are repeated to test whether there will be a large temperature difference between the inner arc part and the outer arc part of the bent part of the simulation tube 3. In this way, the meshing rotation between the driving gear 12 and the driven gear 13 can be used to press out the hot air flow in the internal heat chamber 10, simulating the state of heat generation inside the pipeline during use, detecting the temperature difference inside and outside the simulation tube 3 in this state, and at the same time changing the limit state between the skeleton disks 15 to realize the temperature detection on the inner and outer arc surfaces of the simulation tube 3 after bending, and judging the heat insulation performance of the aerogel coating in the bent state; During the docking process of the two semi-circular simulation covers 2, the semi-circular simulation cover 2 drives the adjustment rack 30 to move in the direction of the opposite arc-shaped teeth 27 by adjusting the telescopic rod 29. During the movement, the adjustment rack 30 will be blocked by one side surface of the limit rotating plate 32. Since the rotational elastic force of the strong torsion spring 31 on the pin shaft of the limit rotating plate 32 is greater than the elastic force of the adjustment telescopic rod 29, the adjustment rack 30 will continuously compress the adjustment telescopic rod 29. As the two semi-circular simulation covers 2 approach each other, the other side surfaces of the two opposite limit rotating plates 32 will squeeze each other, realizing the mutual rotation of the two limit rotating plates 32. As the included angle between one side surface of the limit rotating plate 32 and the adjustment rack 30 decreases during rotation, the limitation of the adjustment rack 30 will be insufficient, and the adjustment rack 30 will be pushed forward under the action of the adjustment telescopic rod 29. At this time, the docking between the two semi-circular simulation covers 2 has been completed synchronously. The movement of the adjustment rack 30 will drive the arc-shaped teeth 27 to slide in the arc-shaped guide rail 26, and then drive the distance measuring sensor 28 to perform an arc-shaped slide, so that the distance measuring sensor 28 can continuously measure the distances between different parts on the outer wall of the simulation tube 3 and itself. In this way, based on the data measured by the distance measuring sensor 28, it can be analyzed and judged whether sagging occurs after the simulation tube 3 is sprayed with aerogel, whether the aerogel coating flows on the arc-shaped pipe wall, resulting in uneven coating, and the adhesion of the aerogel coating can be detected; After the docking of the two semi-circular simulation covers 2 is completed, the erosion liquid in the erosion box 22 is pumped and pressed into the conveying pipe 24, and then evenly sprayed in a ring along the simulation tube 3 through multiple simulation arc pipes 25, so that the outer wall of the simulation tube 3 can be evenly eroded by the erosion liquid, simulating the state of a pipeline buried underground for a long time being eroded, making the subsequent detection more in line with the actual use situation of the pipeline. Subsequently, the external of the simulation tube 3 is continuously heated by the heat radiation plate 23. In this way, the heat insulation effect of the aerogel coating on the outer wall of the simulation tube 3 can be tested under the state of high temperature outside the simulation tube 3. Through the simulation of different scenarios, the detection of the aerogel coating is made more diversified.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An apparatus for detecting the heat insulation performance of an aerogel coating, comprising a detection table (1) and two semi-circular simulation covers (2) for detecting a simulation tube (3), characterized in that, At the top of the detection table (1), two relatively arranged control motors (6) are connected through two mounting seats. The control motor (6) is connected to a pipe sealing seat (7) through a drive shaft. The pipe sealing seat (7) is connected to an internal heat chamber (10) through a pipe sealing assembly. At the port of the internal heat chamber (10), there is a tooth pressing assembly for heating and opening the inside of the simulation tube (3). The tooth pressing assembly is connected to two relatively arranged skeleton discs (15), and a limiting assembly is arranged between the two skeleton discs (15). An erosion box (22) is arranged on the outer side wall of the semi-circular simulation cover (2). The erosion box (22) is connected to a plurality of simulation arc tubes (25) through a conveying pipe (24). One side of the simulation arc tube (25) is connected to an arc-shaped guide rail (26). On the inner side wall of the arc-shaped guide rail (26), there is a ring measuring assembly for detecting the thickness of the aerogel on the simulation tube (3). The other side of the simulation arc tube (25) is connected to a temperature measuring arc plate (33) through a fixing rod. On the inner side wall of the temperature measuring arc plate (33), a plurality of external temperature detectors (34) are connected. The two temperature measuring arc plates (33) on the two relatively arranged simulation arc tubes (25) are arranged staggeredly.

2. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, At the top of the detection table (1), two relatively arranged electric control guide rails (4) are fixedly connected. On the inner side wall of the electric control guide rail (4), two guide seats (5) are slidably connected. The top of the guide seat (5) is fixedly connected to the outer side wall of the semi-circular simulation cover (2) through a support component.

3. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, The pipe sealing assembly consists of a support telescopic rod (8) and two electric control clamping plates (9). An annular sealing groove is opened at the end of the pipe sealing seat (7). The inner end surface of the annular sealing groove is fixedly connected to the fixed end of the support telescopic rod (8). The piston rod end of the support telescopic rod (8) is fixedly connected to the internal heat chamber (10). The two ends of the pipe sealing seat (7) are respectively connected to the two electric control clamping plates (9).

4. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, The tooth pressing assembly consists of a driving gear (12) and a driven gear (13). The driving gear (12) and the driven gear (13) are meshed with each other. A lower discharge hole is opened at the end of the internal heat chamber (10). An adapter gear box (11) is fixedly connected to the end of the internal heat chamber (10). The top of the adapter gear box (11) is communicated with an exhaust hood (14).

5. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 4, characterized in that, Both the driving gear (12) and the driven gear (13) are rotatably connected to the adapter gear box (11). The driving gear (12) is rotatably connected to the skeleton disc (15) through a rotating shaft. An electric heating component is arranged in the internal heat chamber (10), and an inert gas is filled in the internal heat chamber (10).

6. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, The limiting component is composed of two relatively arranged electromagnetic rings (20). A plurality of dissipation holes are formed in the skeleton disk (15). An impeller member (16) is rotatably connected to the inner side wall of the dissipation hole through a through plate. The two skeleton disks (15) are connected by a connecting rod, and the middle of the connecting rod is a corrugated hose structure. The connecting rod is connected to the two electromagnetic rings (20) through a plurality of adjusting telescopic rods (19). A plurality of rubber support plates (17) are fixedly connected to the adjacent end faces of the two skeleton disks (15). The rubber support plate (17) is connected with an inner temperature detector (18). The outermost ends of the two middle skeleton disks (15) are fixedly connected with electromagnetic limiting columns (21).

7. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, A plurality of spray ports are formed in the inner arc side wall of the simulation arc tube (25). Erosion liquid is contained in the erosion box (22). A plurality of heat radiation plates (23) are fixedly connected to the inner side wall of the semi-circular simulation cover (2).

8. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 1, characterized in that, The ring measurement component is composed of an arc-shaped tooth (27) and a distance measurement sensor (28). The inner side wall of the arc-shaped guide rail (26) is slidably connected with the arc-shaped tooth (27). One end side wall of the arc-shaped tooth (27) is fixedly connected with the distance measurement sensor (28). A flat seat is fixedly connected to the outer side wall of the arc-shaped guide rail (26). The top end of the flat seat is rotatably connected with a limiting rotating plate (32) through a pin shaft. A strong torsion spring (31) is sleeved on the outer side wall of the pin shaft.

9. The apparatus for detecting the heat insulation performance of an aerogel coating according to claim 8, characterized in that, The inner side wall of the semi-circular simulation cover (2) is connected with a plurality of adjusting racks (30) through a plurality of adjusting telescopic rods (29). The adjusting rack (30) and the opposite arc-shaped tooth (27) are in the same plane and mesh with each other. The rotational elastic force of the strong torsion spring (31) is greater than the elastic force of the adjusting telescopic rod (29).

Images