Double-layer irradiation simulation test device and application thereof

Abstract

The invention relates to the technical field of irradiation simulation test equipment, and discloses a double-layer irradiation simulation test device and application thereof, the double-layer irradiation simulation test device comprises a box body, a box door, an interlayer, a main control unit, an irradiation unit, a first temperature control unit, a second temperature control unit and a plurality of sensors, the box body and the box door form a closed inner cavity, and the interlayer divides the inner cavity into an upper layer cavity and a lower layer cavity. In the actual situation, one side of the test piece is exposed to a high temperature to be irradiated, the other side of the test piece is under the ground or in other environments with the low temperature, and test piece performance data closer to the actual situation are obtained. The problem that conventional irradiation simulation equipment cannot simulate the actual irradiation environment with the temperature difference between the two sides is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of radiation simulation test equipment, and in particular to a double-layer radiation simulation test device and applications thereof. Background Art

[0002] Black asphalt pavement absorbs a large amount of heat under the action of solar radiation, causing the pavement structure to heat up significantly, increasing the risk of rutting, exacerbating the urban heat island effect, and having an adverse impact on the surrounding environment and pedestrians of road infrastructure.

[0003] To address the high temperature problem, pavement cooling technology can be developed. Its implementation requires the use of a high-precision indoor solar radiation environment simulation device. Currently, most indoor radiation test devices have low light source accuracy and lack a scientific and stable test environment such as temperature and humidity control, which leads to deviations between the test results and the actual cooling effect. The accuracy and reproducibility of the data are low, and the temperature range of the temperature-controllable device is small, making it difficult to simulate the radiation-low temperature combined coupling effect on the pavement structure. Outdoor tests are mostly dependent on the local climate. Rainfall will make the test difficult to carry out. The surface temperature of the specimen is affected by external factors such as wind speed, and the temperature data fluctuates greatly, which increases the test intensity and difficulty of relevant personnel and reduces the test efficiency.

[0004] Currently, the actual temperature control range of indoor solar radiation environment simulation devices on the market is limited, generally ranging from room temperature to 70°C. This makes it difficult to simulate the conditions of road surface exposure to solar radiation and the coupling of low temperatures between the road surface and the underground. Therefore, it is necessary to develop a low-temperature road solar radiation environment simulation test device to improve the scientificity and testing accuracy of the device and expand its functionality and application scenarios. Summary of the Invention

[0005] In response to the above-mentioned defects, the purpose of the present invention is to propose a double-layer radiation simulation test device and its application, so as to solve the problem in the existing technology that the radiation simulation test equipment cannot meet the environmental conditions of simultaneously simulating the road surface layer being irradiated by the sun and the coupling effect of the road bottom layer and underground low temperature, and the pavement material test results deviate from the actual ones.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A double-layer irradiation simulation test device includes a box body, a box door, a partition, a main control unit, an irradiation unit, a first temperature control unit, a second temperature control unit, and a plurality of sensors. The box door is openably connected to the box body. The box body and the box door form a closed inner cavity. The partition is arranged in the inner cavity and divides the inner cavity into an upper cavity and a lower cavity.

[0008] The main control unit is used to control the irradiation unit, the first temperature control unit and the second temperature control unit. The irradiation unit is used to provide irradiation. The first temperature control unit is used to adjust the temperature of the upper cavity. The second temperature control unit is used to adjust the temperature of the lower cavity.

[0009] The partition is provided with a test installation hole, and the test installation hole is used for installing the test piece to be tested in a space-avoiding manner.

[0010] Preferably, the irradiation unit includes an irradiation lamp, a filter and a focusing cover, wherein the focusing cover is arranged on the top of the upper cavity and has a downward irradiation opening, the irradiation lamp is arranged inside the focusing cover, and the filter is arranged below the irradiation lamp and covers the irradiation opening;

[0011] The first temperature control unit is used to heat the temperature of the upper cavity; the second temperature control unit is used to reduce the temperature of the lower cavity.

[0012] Preferably, the partition includes an upper cavity bottom plate, a lower cavity top plate and several insulation blocks, the upper cavity bottom plate is located at the top of the partition, the lower cavity top plate is located at the bottom of the partition, several insulation blocks are arranged between the upper cavity bottom plate and the lower cavity top plate, and several insulation blocks are connected to each other to form a ring around the test mounting hole.

[0013] Preferably, the partition layer further comprises a plurality of height support blocks, the height support blocks are distributed at intervals on the upper cavity bottom plate and the lower cavity top plate, and the height support blocks are made of heat-insulating material.

[0014] Preferably, four thermal insulation blocks are provided, the test mounting hole is a rectangular hole, the thermal insulation block includes a first thermal insulation board, a second thermal insulation board, a third thermal insulation board and a fourth thermal insulation board, and the first thermal insulation board, the second thermal insulation board, the third thermal insulation board and the fourth thermal insulation board are sequentially connected to form a rectangular structure;

[0015] The first heat insulation board is arranged close to the box door, and the partition layer also includes an upper support block and a lower support block. The upper support block is arranged on the upper side of the first heat insulation board, and the lower support block is arranged on the lower side of the first heat insulation board. The upper cavity bottom plate is provided with a first opening, and the lower cavity top plate is provided with a second opening. The first opening matches the shape of the upper support block, and the second opening matches the shape of the lower support block. The upper support block is detachably arranged at the first opening, and the lower support block is detachably arranged at the second opening. The first heat insulation board is detachably connected to the second heat insulation board and the fourth heat insulation board.

[0016] Preferably, the insulation layer further comprises a connecting plate, and the first heat insulation board, the upper support block and the lower support block are integrally fixed via the connecting plate;

[0017] The second heat insulation board and the fourth heat insulation board are respectively provided with mounting grooves, and the mounting grooves are used for mounting the first heat insulation board.

[0018] Preferably, two fixture frames are further included, and the two fixture frames are respectively arranged on the upper and lower sides of the partition layer. The fixture frames are provided with a first mounting hole, and the first mounting hole is within the orthographic projection range of the test mounting hole.

[0019] Preferably, it further comprises a lifting bracket, which is arranged in the lower cavity and is used to support and adjust the installation height of the tested piece.

[0020] Preferably, the sensor includes a plurality of temperature sensors, which are distributed in various locations of the inner cavity and the test piece, and the temperature sensors are used to measure the temperature inside the box and the test piece.

[0021] Preferably, it also includes several data output lines, which are used to connect the sensor and the external monitoring system. The box body has a test hole in the upper cavity and the lower cavity respectively, and the test hole is used to avoid the data output lines.

[0022] Preferably, the system further comprises a housing, wherein the first temperature control unit comprises a first compressor, a first evaporator and a first condenser which are circulated through a pipeline, the second temperature control unit comprises a second compressor, a second evaporator and a second condenser which are circulated through a pipeline, the upper cavity is provided with a first partition, the lower cavity is provided with a second partition, the first partition divides the upper cavity into a heating zone and an upper test zone, the second partition divides the lower cavity into a cooling zone and a lower test zone, the first evaporator is provided in the heating zone, the second condenser is provided in the cooling zone, and the first compressor, the first condenser, the second compressor and the second evaporator are provided between the box and the housing;

[0023] Several ventilation holes are provided in the first partition and the second partition, a first circulation fan is provided in the upper cavity, and a second circulation fan is provided in the lower cavity. The first circulation fan is used to balance the temperature of the heating zone and the upper test zone, and the second circulation fan is used to balance the temperature of the cooling zone and the lower test zone.

[0024] An application of a double-layer radiation simulation test device uses the above-mentioned double-layer radiation simulation test device to simulate and measure the thermal properties of pavement materials under solar radiation.

[0025] The technical solution provided by the present invention can have the following beneficial effects:

[0026] 1. When the specimen is tested, it passes through the test mounting hole in the interlayer. The first temperature control unit adjusts the temperature of the upper cavity, while the second temperature control unit adjusts the temperature of the lower cavity. This fully simulates the actual situation in which one side of the specimen is exposed to a higher temperature and irradiated, while the other side is underground or in a lower temperature environment. This provides specimen performance data that is closer to actual conditions. This solves the problem that conventional irradiation simulation equipment cannot simulate actual irradiation environments with temperature differences between the two sides.

[0027] Through the upper and lower double-layer cavity setting, independent temperature and humidity control, effective simulation of complex environmental conditions, improved test accuracy and practicality, and provide a scientific and controllable indoor environment for pavement materials, which is suitable for scientific research and industrial fields.

[0028] 2. Conventional irradiation simulation equipment cannot withstand low temperatures on the side where the irradiation lamp is installed due to heat generated by the irradiation lamp. The temperature adjustment range of the upper cavity is from room temperature to 70°C, and the temperature adjustment range of the lower cavity is from room temperature to -60°C. By setting the lower cavity on the side away from the irradiation lamp and only cooling the lower cavity, the temperature in the lower cavity can be adjusted to room temperature to -60°C without affecting the use of the irradiation lamp, fully simulating the conditions of the specimen in a cold environment, greatly widening the temperature range of the irradiation simulation environment, achieving a low-temperature-irradiation coupling condition of as low as -60°C, and solving the problem affecting the use of the irradiation lamp.

[0029] 3. The upper and lower cavities are separated by insulation blocks and height support blocks made of thermal insulation material, and are filled with thermal insulation cotton to further improve the thermal insulation effect. The upper and lower cavities can fully realize independent control of the ambient temperature, ensuring precise regulation of temperature conditions during the radiation simulation test, improving the accuracy of test data and test efficiency.

[0030] 4. The rectangular test mounting hole matches the rectangular shape of a conventional test piece. During testing, sealing material is filled between the test piece and the insulation board to maintain the independence of the upper and lower cavities. At the same time, the upper support block and the lower support block support the first insulation board to prevent the first insulation board from being deformed due to insufficient support, resulting in poor sealing. The detachable setting of the first insulation board, the upper support block and the lower support block makes the installation of the test piece more convenient, and solves the problem that large test pieces are difficult to install in the test mounting hole in the inner cavity with limited space. The first insulation board, the upper support block and the lower support block are fixed by a connecting plate, which facilitates the overall disassembly and assembly, simplifies the test piece installation steps, and shortens the changeover time. The clamp frame can clamp the sealing material filled between the test piece and the insulation block from the upper and lower sides of the interlayer to prevent the sealing material from falling and causing poor sealing. At the same time, the clamp frame provides support for the upper and lower support blocks, making the installation of the first insulation board more stable.

[0031] 5. Use the lift bracket to conveniently adjust the height of the test specimen, optimizing its distribution between the upper and lower chambers, thereby ensuring a test environment closer to real-world conditions. The lift bracket can be a telescopic bracket or can be adjusted by fitting a clip on the bracket into several mounting slots at varying heights within the chamber.

[0032] 6. 36 temperature sensors ensure comprehensive, high-precision monitoring of temperature changes. The main control unit is equipped with a visual panel to facilitate the adjustment of various parameters, achieving integrated control of temperature, humidity, and irradiation intensity. It is easy to operate and can observe the temperature and humidity of the inner cavity, the temperature of the test piece, and the irradiation intensity of the irradiation lamp in real time. It also records temperature and irradiance information at multiple points, making it easy to record and export data, significantly reducing the labor intensity of operators and improving operational efficiency. It facilitates the establishment of a scientific irradiation environment for indoor irradiation, efficiently tests the thermal properties and cooling performance of pavement materials under irradiation, and provides scientific experimental conditions for the development of cooling pavement technology. The sensors are simultaneously connected to the main control unit and the external monitoring system, facilitating the external monitoring system to collect, record, and process data.

[0033] 7. The first compressor and the second compressor are used to respectively control the heating and cooling of the upper and lower chambers, achieving independent and precise temperature control of the upper and lower chambers. The use of cascade compressors allows the temperature in the lower chamber to reach -60°C.

[0034] 8. After filling the test mounting holes with insulation blocks, the lower cavity can be used alone to simulate a low-temperature environment while preventing the low temperature from affecting the normal service life of the irradiation lamp; the upper cavity can also be used alone to simulate a conventional irradiation heating environment, broadening the use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0036] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention.

[0037] Figure 3 This is a schematic diagram of a partial explosion structure of an embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of the three-dimensional structure of another direction of an embodiment of the present invention.

[0039] Wherein: box body 1, inner cavity 100, upper cavity 101, heating area 1011, upper test area 1012, lower cavity 102, cooling area 1021, lower test area 1022, box door 2, partition 3, test installation hole 301, installation slot 302, upper cavity bottom plate 31, lower cavity top plate 32, insulation block 33, first insulation board 331, second insulation board 332, third insulation board 333, fourth insulation board 334, Height support block 34, upper support block 35, lower support block 36, connecting plate 37, first partition 38, second partition 39, main control unit 4, irradiation unit 5, first temperature control unit 61, first compressor 611, first evaporator 612, first condenser 613, second temperature control unit 62, second compressor 621, second evaporator 622, second condenser 623, specimen 7, fixture frame 8, lifting bracket 9, and outer shell 10. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features, without distinction of order or importance.

[0042] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] The following describes embodiments of the present invention in conjunction with the accompanying drawings.

[0045] A double-layer irradiation simulation test device includes a box body 1, a box door 2, a partition 3, a main control unit 4, an irradiation unit 5, a first temperature control unit 61, a second temperature control unit 62, and a plurality of sensors. The box door 2 is openably connected to the box body 1. The box body 1 and the box door 2 form a closed inner cavity 100. The partition 3 is disposed in the inner cavity 100 and divides the inner cavity 100 into an upper cavity 101 and a lower cavity 102.

[0046] The main control unit 4 is used to control the irradiation unit 5, the first temperature control unit 61 and the second temperature control unit 62. The irradiation unit 5 is used to provide irradiation, the first temperature control unit 61 is used to adjust the temperature of the upper cavity 101, and the second temperature control unit 62 is used to adjust the temperature of the lower cavity 102.

[0047] The partition layer 3 is provided with a test installation hole 301 , and the test installation hole 301 is used for installing the test piece 7 to be tested in a space-proof manner.

[0048] like Figure 1 、 Figure 2 and Figure 4 As shown, when the test specimen 7 is tested, it passes through the test mounting hole 301 of the interlayer 3. The first temperature control unit 61 regulates the temperature of the upper cavity 101, while the second temperature control unit 62 adjusts the temperature of the lower cavity 102. This fully simulates the actual situation in which one side of the test specimen 7 is exposed to a higher temperature and irradiated, while the other side is underground or in a lower temperature environment. This allows for the acquisition of performance data of the test specimen 7 that is closer to the actual situation. This solves the problem that conventional irradiation simulation equipment cannot simulate the actual irradiation environment with a temperature difference between the two sides.

[0049] Preferably, a humidity control unit is further included, and the humidity control unit is used to adjust the humidity of the upper cavity 101 and the lower cavity 102 respectively.

[0050] Through the upper and lower double-layer cavity setting, independent temperature and humidity control, effective simulation of complex environmental conditions, improved test accuracy and practicality, and provide a scientific and controllable indoor environment for pavement materials, which is suitable for scientific research and industrial fields.

[0051] Preferably, the irradiation unit 5 includes an irradiation lamp, a filter and a focusing cover, wherein the focusing cover is arranged at the top of the upper cavity 101 and has a downward irradiation opening, the irradiation lamp is arranged inside the focusing cover, and the filter is arranged below the irradiation lamp and covers the irradiation opening;

[0052] The first temperature control unit 61 is used to heat the temperature of the upper cavity 101 ; the second temperature control unit 62 is used to lower the temperature of the lower cavity 102 .

[0053] The filter can filter out the short-wave ultraviolet light emitted by the irradiation lamp, making the wavelength of the light closer to that of sunlight; the use of a focusing shield makes the light more concentrated and uniform, ensuring the uniformity of the irradiation received by the test piece 7. In a specific embodiment, the focusing shield is a trapezoidal shield or a conical shield.

[0054] Conventional irradiation simulation equipment cannot withstand low temperatures on the side where the irradiation lamp is installed due to heat generated by the irradiation lamp. The temperature adjustment range of the upper cavity 101 is from room temperature to 70°C, and the temperature adjustment range of the lower cavity 102 is from room temperature to -60°C. By setting the lower cavity 102 on the side away from the irradiation lamp and only cooling the lower cavity 102, the temperature in the lower cavity 102 can be adjusted to from room temperature to -60°C without affecting the use of the irradiation lamp, fully simulating the conditions of the specimen 7 in a cold environment, greatly widening the temperature range of the irradiation simulation environment, achieving a low-temperature-irradiation coupling condition of at least -60°C, and solving the problem affecting the use of the irradiation lamp.

[0055] Preferably, the partition 3 includes an upper cavity bottom plate 31, a lower cavity top plate 32 and a plurality of thermal insulation blocks 33, the upper cavity bottom plate 31 is located at the top of the partition 3, the lower cavity top plate 32 is located at the bottom of the partition 3, and the plurality of thermal insulation blocks 33 are arranged between the upper cavity bottom plate 31 and the lower cavity top plate 32, and the plurality of thermal insulation blocks 33 are connected to each other to form a ring around the test mounting hole 301.

[0056] Preferably, the partition 3 further includes a plurality of height support blocks 34 , which are distributed at intervals on the upper cavity bottom plate 31 and the lower cavity top plate 32 , and the height support blocks 34 are made of heat-insulating material.

[0057] Preferably, heat insulation cotton is filled between the upper cavity bottom plate 31 and the lower cavity top plate 32 .

[0058] like Figure 3As shown, with this structure, the upper cavity 101 and the lower cavity 102 are supported and separated by the insulation block 33 and the height support block 34 made of insulation material, and are filled with insulation cotton to further improve the insulation effect. The upper cavity 101 and the lower cavity 102 can fully realize independent control of the ambient temperature, ensure the precise control of temperature conditions during the irradiation simulation test, and improve the accuracy of the test data and the test efficiency.

[0059] Preferably, four thermal insulation blocks 33 are provided, the test mounting hole 301 is a rectangular hole, and the thermal insulation block 33 includes a first thermal insulation board 331, a second thermal insulation board 332, a third thermal insulation board 333, and a fourth thermal insulation board 334. The first thermal insulation board 331, the second thermal insulation board 332, the third thermal insulation board 333, and the fourth thermal insulation board 334 are sequentially connected to form a rectangular structure;

[0060] The first heat insulation board 331 is arranged close to the box door 2, and the partition 3 also includes an upper support block 35 and a lower support block 36. The upper support block 35 is arranged on the upper side of the first heat insulation board 331, and the lower support block 36 is arranged on the lower side of the first heat insulation board 331. The upper cavity bottom plate 31 is provided with a first opening, and the lower cavity top plate 32 is provided with a second opening. The first opening matches the shape of the upper support block 35, and the second opening matches the shape of the lower support block 36. The upper support block 35 is detachably arranged at the first opening, and the lower support block 36 is detachably arranged at the second opening. The first heat insulation board 331 is detachably connected to the second heat insulation board 332 and the fourth heat insulation board 334.

[0061] The rectangular test mounting hole 301 matches the rectangular shape of a conventional test specimen 7. During testing, sealing material is filled between the test specimen 7 and the thermal insulation board 33 to maintain the independence of the upper cavity 101 and the lower cavity 102. The upper support block 35 and the lower support block 36 simultaneously support the first thermal insulation board 331, preventing deformation of the first thermal insulation board 331 due to insufficient support and resulting in a poor seal. The removable design of the first thermal insulation board 331, the upper support block 35, and the lower support block 36 facilitates the installation of the test specimen 7 and solves the problem of large test specimens 7 being difficult to install in the test mounting hole 301 within the limited space of the inner cavity 100.

[0062] In one embodiment, the upper support block 35 and the lower support block 36 are detachably mounted on the upper cavity bottom plate 31 and the lower cavity top plate 32 respectively by buckles, supporting the first heat insulation board 331 from the upper and lower sides.

[0063] Preferably, the barrier layer 3 further includes a connecting plate 37, and the first heat insulation board 331, the upper support block 35 and the lower support block 36 are integrally fixed by the connecting plate 37;

[0064] The second heat insulation board 332 and the fourth heat insulation board 334 are respectively provided with a mounting groove 302 , and the mounting groove 302 is used for mounting the first heat insulation board 331 .

[0065] In a more preferred embodiment, the first heat insulation board 331, the upper support block 35 and the lower support block 36 are fixed by a connecting plate 37, which facilitates overall disassembly and assembly, simplifies the installation steps of the test piece 7, and shortens the changeover time.

[0066] Preferably, the height of the inner cavity 100 is 1200-1800 mm, and the height ratio of the upper cavity 101 to the lower cavity 102 is 1.1-1.2:1. This provides ample space for installing the test piece 7 and adjusting its height. At the same time, the upper cavity 101 maintains a sufficient height gap to fully prevent the low temperature of the lower cavity 102 from affecting the irradiation lamp.

[0067] Preferably, the thickness of the barrier layer 3 is 100-160 mm, and the upper bottom plate 31 and the lower top plate 32 are made of 3-5 mm stainless steel. The thickness of the barrier layer 3 ensures thermal insulation and reduces heat conduction between the upper cavity 101 and the lower cavity 102. The thickness of the stainless steel plates of the upper bottom plate 31 and the lower top plate 32 ensures the overall support of the barrier layer 3, preventing deformation of the barrier layer 3 due to insufficient support, which may affect the sealing effect of the barrier layer 3.

[0068] Preferably, the thickness of the first insulation board 331 is 20 to 40 mm, and it is made of asbestos fiberboard. The thickness of the upper support block 35 and the lower support block 36 are both 40 to 60 mm, and they are hollow support block structures formed by bending 3 to 5 mm steel plates.

[0069] The first heat insulation board 331 ensures sufficient thickness to provide heat insulation effect. The upper support block 35 and the lower support block 36 are made of stainless steel and have a hollow support block structure, which reduces the overall weight while ensuring sufficient support strength. At the same time, the lightweight upper support block 35 and the lower support block 36 facilitate disassembly and assembly when the test piece 7 is replaced.

[0070] Preferably, two fixture frames 8 are further included, and the two fixture frames 8 are respectively arranged on the upper and lower sides of the partition 3 . The fixture frames 8 are provided with a first mounting hole, and the first mounting hole is within the orthographic projection range of the test mounting hole 301 .

[0071] The dimensions of the first mounting hole match the shape of the test piece 7, allowing the clamp frame 8 to clamp the sealing material between the test piece 7 and the insulation block 33 from both the upper and lower sides of the barrier layer 3, preventing the sealing material from falling and causing a poor seal. The clamp frame 8 also provides support for the upper and lower support blocks 35 and 36, ensuring a more secure installation of the first insulation board 331.

[0072] In a specific embodiment, several different types of fixture frames 8 are provided. Different types of fixture frames 8 have first mounting holes of different sizes, so as to facilitate matching with test pieces 7 of different shapes.

[0073] In one embodiment, a plurality of buckles are provided on opposite sides of the partition 3 in the horizontal direction, which cooperate with a plurality of slots of different heights on the inner side of the box body 1 to realize the height adjustment function. By adjusting the height of the partition 3 in the inner cavity 100, the distribution ratio of the test piece 7 in the upper cavity 101 and the lower cavity 102 is adjusted.

[0074] Preferably, a lifting bracket 9 is further included. The lifting bracket 9 is arranged in the lower cavity 102 and is used to support and adjust the installation height of the test piece 7.

[0075] In a preferred embodiment, the height of the test piece 7 is conveniently adjusted using a lifting bracket 9, optimizing the distribution ratio of the test piece 7 in the upper chamber 101 and the lower chamber 102, thereby making the test environment more realistic. The lifting bracket 9 can be a telescopic bracket, or the height adjustment function can be achieved by engaging a buckle on the bracket with several mounting slots at different heights inside the box.

[0076] Preferably, the sensor includes a plurality of temperature sensors, which are distributed in various locations of the inner cavity 100 and the test piece 7 , and the temperature sensors are used to measure the temperature inside the box 1 and the test piece 7 .

[0077] Preferably, the temperature sensor includes a probe-type temperature sensor and an infrared temperature probe. The probe-type sensor is arranged in the inner cavity 100 or inserted into the inner wall of the test piece 7. The infrared temperature probe is aimed at various places on the surface of the test piece 7 to collect test data to monitor temperature changes in real time.

[0078] In this specific embodiment, the test piece 7 is a rectangular parallelepiped and is equipped with 36 temperature sensors, including 32 probe-type temperature sensors. Four are located near the four corners of the six outer surfaces of the test piece 7, one is located at the geometric center of each of the upper and lower surfaces, and four are inserted vertically at intervals within the center of the test piece 7, one each in the upper cavity 101 and lower cavity 102 to measure the ambient temperature. Four infrared temperature probes are used to measure the surface temperature of the upper and lower surfaces and two of the side surfaces of the test piece 7. These 36 temperature sensors ensure comprehensive and high-precision monitoring of temperature changes.

[0079] Preferably, the sensor further includes an irradiation sensor and a humidity sensor. The irradiation sensor is used to detect the irradiation intensity of the irradiation unit 5 , and the humidity sensor is used to detect the humidity of the inner cavity 100 .

[0080] In a specific embodiment, the main control unit 4 is provided with a visual panel, which is convenient for adjusting various parameters and realizing integrated control of temperature, humidity and irradiation intensity. It is easy to operate and can observe the temperature and humidity of the inner cavity 100, the temperature of the test piece 7 and the irradiation intensity of the irradiation lamp in real time. It can also record the temperature information and irradiance information of multiple points at the same time, facilitate the recording and export of data, significantly reduce the labor intensity of operators, improve operational efficiency, provide convenience for the construction of a scientific irradiation environment for indoor irradiation, efficiently test the thermal properties and cooling performance of pavement materials under irradiation, and provide scientific experimental conditions for the development of cooling pavement technology.

[0081] Preferably, it also includes several data output lines, which are used to connect the sensor and the external monitoring system. The box 1 has a test hole at the upper cavity 101 and the lower cavity 102, and the test holes are used to avoid the data output lines.

[0082] The sensor is connected to the main control unit 4 and the external monitoring system at the same time, so that the external monitoring system can collect, record and process data. In a specific embodiment, the test hole is sealed by a sealant.

[0083] Preferably, the housing 10 is further included, the first temperature control unit 61 includes a first compressor 611, a first evaporator 612 and a first condenser 613 connected in a circulation manner through a pipeline, the second temperature control unit 62 includes a second compressor 621, a second evaporator 622 and a second condenser 623 connected in a circulation manner through a pipeline, the upper cavity 101 is provided with a first partition 38, and the lower cavity 102 is provided with a second partition 39, the first partition 38 divides the upper cavity 101 into a heating zone 1011 and an upper test zone 1012, the second partition 39 divides the lower cavity 102 into a cooling zone 1021 and a lower test zone 1022, the first evaporator 612 is provided in the heating zone 1011, the second condenser 623 is provided in the cooling zone 1021, and the first compressor 611, the first condenser 613, the second compressor 621 and the second evaporator 622 are provided between the box body 1 and the housing 10;

[0084] The first partition 38 and the second partition 39 are both provided with a plurality of ventilation holes. The upper cavity 101 is provided with a first circulation fan, and the lower cavity 102 is provided with a second circulation fan. The first circulation fan is used to balance the temperature of the heating zone 1011 and the upper test zone 1012, and the second circulation fan is used to balance the temperature of the cooling zone 1021 and the lower test zone 1022.

[0085] The first compressor 611 and the second compressor 621 are respectively responsible for heating and cooling, thereby achieving independent and precise temperature control of the upper cavity 101 and the lower cavity 102.

[0086] Preferably, the second compressor 621 is a 3.5 HP cascade compressor. Conventional compressors can only achieve a refrigeration effect of -40°C, while the cascade compressor can make the temperature in the lower cavity 102 reach -60°C.

[0087] Preferably, the door 2 is provided with an observation window. The observation window adopts a double-layer tempered glass structure. A lighting is also provided between the double-layer tempered glass to realize visualization of the interior of the box 1, facilitating real-time observation of the status of the test piece 7 during the test process. Specifically, the door 2 is provided with an observation window in each of the upper cavity 101 and the lower cavity 102.

[0088] Preferably, the box body 1 is a double-layer structure, and the box body 1 adopts a double-layer stainless steel plate structure. The spacing between the double-layer stainless steel plates is 80 to 160 mm. The double-layer stainless steel plates are filled with insulation materials to improve the insulation performance and prevent the external temperature from affecting the independent temperature control of the upper cavity 101 and the lower cavity 102.

[0089] Preferably, the device further comprises a water tank, an atomizer, and a humidification tube. The water tank is disposed between the housing 1 and the outer shell 10, and the atomizer is disposed within the water tank. The atomizer is connected to the upper cavity 101 and the lower cavity 102 via the humidification tube, and the atomizer is used to increase the humidity within the cavity. Specifically, a regulating valve is provided within the humidification tube to independently adjust the humidification amount of the upper cavity 101 or the lower cavity 102.

[0090] Using a compressor to achieve heating and cooling will reduce the ambient humidity, and the humidity is adjusted by the atomizer to better simulate the environment.

[0091] Preferably, it further comprises a water pump and a spray pipe, the spray pipe is connected to the water tank through the water pump, and the outlet of the spray pipe is connected to the top of the upper cavity 101. Specifically, a nozzle is provided at the outlet of the spray pipe, and the simulated precipitation is sprayed through the spray pipe and the nozzle.

[0092] Preferably, a heat preservation block is further included, and the heat preservation block matches the test installation hole 301.

[0093] After filling the test mounting hole 301 with an insulation block, the lower cavity 102 can be used alone to simulate a low-temperature environment while preventing the low temperature from affecting the normal service life of the irradiation lamp; the upper cavity 101 can also be used alone to simulate a conventional irradiation heating environment to broaden the usage scenarios.

[0094] An application of a double-layer radiation simulation test device uses the above-mentioned double-layer radiation simulation test device to simulate and measure the thermal properties of pavement materials under solar radiation.

[0095] Through a double-layer temperature and humidity control system, combined with multiple sensors to collect data, a scientific and controllable indoor environment is provided for pavement materials, greatly expanding the temperature range of the irradiation environment chamber, achieving environmental conditions of low temperature-irradiation coupling, and comprehensively simulating the complex conditions of pavement materials under solar irradiation environments, providing strong experimental support for pavement material performance evaluation.

[0096] Other structures and operations according to the embodiments of the present invention are well known to those skilled in the art and will not be described in detail here.

[0097] Throughout this specification, reference to terms such as "embodiment" or "example" indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0098] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A double-layer irradiation simulation test device, characterized in that: The device comprises a box body, a box door, a partition, a main control unit, an irradiation unit, a first temperature control unit, a second temperature control unit, and a plurality of sensors. The box door is openably connected to the box body. The box body and the box door form a closed inner cavity. The partition is provided in the inner cavity, and the partition divides the inner cavity into an upper cavity and a lower cavity. The main control unit is used to control the irradiation unit, the first temperature control unit and the second temperature control unit. The irradiation unit is used to provide irradiation. The first temperature control unit is used to adjust the temperature of the upper cavity. The second temperature control unit is used to adjust the temperature of the lower cavity. The partition is provided with a test installation hole, and the test installation hole is used for installing the test piece to be tested in a space-avoiding manner.

2. The double-layer irradiation simulation test device according to claim 1, characterized in that: The irradiation unit includes an irradiation lamp, a filter and a condenser. The condenser is arranged on the top of the upper cavity and has a downward irradiation opening. The irradiation lamp is arranged inside the condenser. The filter is arranged below the irradiation lamp and covers the irradiation opening. The first temperature control unit is used to heat the temperature of the upper cavity; the second temperature control unit is used to reduce the temperature of the lower cavity.

3. The double-layer irradiation simulation test device according to claim 1, characterized in that: The partition includes an upper cavity bottom plate, a lower cavity top plate and several insulation blocks, the upper cavity bottom plate is located at the top of the partition, the lower cavity top plate is located at the bottom of the partition, several insulation blocks are arranged between the upper cavity bottom plate and the lower cavity top plate, and several insulation blocks are connected to each other to form a ring around the test mounting hole.

4. The double-layer radiation simulation test device according to claim 3, characterized in that: Four thermal insulation blocks are provided, the test mounting hole is a rectangular hole, the thermal insulation block includes a first thermal insulation board, a second thermal insulation board, a third thermal insulation board and a fourth thermal insulation board, and the first thermal insulation board, the second thermal insulation board, the third thermal insulation board and the fourth thermal insulation board are sequentially connected to form a rectangular structure; The first heat insulation board is arranged close to the box door, and the partition layer also includes an upper support block and a lower support block. The upper support block is arranged on the upper side of the first heat insulation board, and the lower support block is arranged on the lower side of the first heat insulation board. The upper cavity bottom plate is provided with a first opening, and the lower cavity top plate is provided with a second opening. The first opening matches the shape of the upper support block, and the second opening matches the shape of the lower support block. The upper support block is detachably arranged at the first opening, and the lower support block is detachably arranged at the second opening. The first heat insulation board is detachably connected to the second heat insulation board and the fourth heat insulation board.

5. The double-layer irradiation simulation test device according to claim 4, characterized in that: The insulation layer further comprises a connecting plate, and the first heat insulation plate, the upper support block and the lower support block are integrally fixed by the connecting plate; The second heat insulation board and the fourth heat insulation board are respectively provided with mounting grooves, and the mounting grooves are used for mounting the first heat insulation board.

6. The double-layer radiation simulation test device according to claim 1, characterized in that: It also includes two fixture frames, which are respectively arranged on the upper and lower sides of the partition. The fixture frames are provided with a first mounting hole, and the first mounting hole is within the orthographic projection range of the test mounting hole.

7. The double-layer radiation simulation test device according to claim 1, characterized in that: It also includes a lifting bracket, which is arranged in the lower cavity and is used to support and adjust the installation height of the tested piece.

8. The double-layer radiation simulation test device according to claim 1, characterized in that: The sensor includes a plurality of temperature sensors, which are distributed in various places of the inner cavity and the tested object. The temperature sensors are used to measure the temperature inside the box and the test object.

9. The double-layer radiation simulation test device according to claim 1, characterized in that: The invention also includes a housing, wherein the first temperature control unit includes a first compressor, a first evaporator, and a first condenser connected in a circulation manner through a pipeline, and the second temperature control unit includes a second compressor, a second evaporator, and a second condenser connected in a circulation manner through a pipeline, the upper cavity is provided with a first partition, and the lower cavity is provided with a second partition, the first partition divides the upper cavity into a heating area and an upper test area, and the second partition divides the lower cavity into a cooling area and a lower test area, the first evaporator is provided in the heating area, the second condenser is provided in the cooling area, and the first compressor, the first condenser, the second compressor, and the second evaporator are provided between the box and the housing; Several ventilation holes are provided in the first partition and the second partition, a first circulation fan is provided in the upper cavity, and a second circulation fan is provided in the lower cavity. The first circulation fan is used to balance the temperature of the heating zone and the upper test zone, and the second circulation fan is used to balance the temperature of the cooling zone and the lower test zone.

10. Application of a double-layer irradiation simulation test device, characterized in that: The double-layer radiation simulation test device according to any one of claims 1 to 9 is used to simulate and measure the thermal properties of pavement materials under solar radiation.

Images