Device and method for measuring microwave ice melting efficiency

Abstract

The present invention discloses a device and method for measuring the microwave ice melting efficiency, which includes a chassis and a test rack. One end of the chassis is hinged to one end of the test rack, and a support rod is arranged between the other end of the chassis and the other end of the test rack. The support rod can form an angle between the chassis and the test rack. A specimen for simulating a road surface is arranged on the test rack, and an ice layer is arranged on the specimen. A stop block and a trigger alarm device are also arranged on the test rack. The stop block is used to prevent the specimen from sliding on the test rack, and the trigger alarm device is used to measure the time required from microwave irradiation of the ice layer to the separation of the ice layer from the specimen, and the trigger alarm device is connected to an automatic timer.

Description

Technical Field

[0001] The present invention belongs to the technical field of road surface ice melting, and particularly relates to a device and a method for measuring the microwave ice melting efficiency. Background Art

[0002] With the vigorous development of the crisscross highway construction in China, while promoting economic development and facilitating people's travel, it also brings great pressure to the management and maintenance of roads. Especially in the long winter, the snow on the road is likely to form snow accumulation and even ice accumulation, resulting in a decrease in the friction coefficient of the road surface, making it difficult for vehicles to drive and brake, and easily causing traffic accidents, bringing heavy losses to people's lives and property. The existing pure mechanical ice melting equipment in China mainly includes: drum ice breakers, vertical blade ice removers, whipping ice removers, and bionic ice removers, etc. These devices have good effects on removing snow on the road, but when the ice is tightly combined with the ground, they not only have low ice melting efficiency, incomplete ice removal, but also damage road markings and even the road surface. When using the microwave ice and snow melting method to melt ice and snow, the microwave can penetrate the ice layer, quickly heat up the surface layer of the road surface, transfer the energy to the ice and snow layer through heat conduction, melt the ice and snow layer into liquid water, so that the ice layer and the road surface are peeled off, and then artificial or mechanical methods are used to clear the ice and snow, greatly improving the working efficiency of the microwave ice and snow melting method. However, at present, the microwave ice melting efficiency index in indoor tests all uses the time required for the surface of the test piece to reach 0°C, which has a large difference from the actual working conditions and cannot accurately measure the microwave ice removal efficiency in indoor tests. Therefore, there is a lack of a device for accurately measuring the microwave ice melting efficiency to evaluate the effect of microwave ice melting, which hinders the development and application of the microwave ice and snow melting technology.

[0003] Therefore, it is urgent to develop a device for accurately measuring the microwave ice melting efficiency to effectively promote the application and development of the microwave technology for ice and snow melting. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and a test method for measuring the microwave ice melting efficiency to overcome the defects of the prior art. The present invention can accurately measure the time required for microwave ice melting, and further can calculate the ice and snow melting efficiency under different microwave-absorbing materials, different road surface structures, and different microwave fields.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for measuring the microwave ice melting efficiency, comprising a chassis and a test rack. One end of the chassis is hinged to one end of the test rack, and a support rod is arranged between the other end of the chassis and the other end of the test rack. The support rod can form an angle between the chassis and the test rack. A specimen for simulating a road surface is arranged on the test rack, and an ice layer is arranged on the specimen. A stop block and a trigger alarm device are also arranged on the test rack. The stop block is used to prevent the specimen from sliding on the test rack, and the trigger alarm device is used to measure the time required from microwave irradiation of the ice layer to the separation of the ice layer from the specimen, and the trigger alarm device is connected to an automatic timer.

[0007] Further, one end of the chassis is connected to one end of the test rack through a rotating shaft.

[0008] Further, the support rod is a telescopic rod, and the support rod is movably connected to the other end of the chassis.

[0009] Further, the angle between the chassis and the test rack is 15° - 80°.

[0010] Further, the test rack is composed of two test plates, and a gap is formed between the two test plates. The gap is used to provide a flow channel for the water formed after the ice layer melts.

[0011] Further, a handle is connected between the two test plates.

[0012] Further, there are two stop blocks, which are respectively arranged on the two test plates, and the stop blocks are wedge-shaped blocks.

[0013] Further, the chassis is arranged in a water tank.

[0014] A method for measuring the microwave ice melting efficiency, using microwave to irradiate the ice layer and the specimen. At the same time, the automatic timer is started. Under the action of microwave irradiation, the surface layer of the specimen heats up and the temperature rises. The energy is transferred to the ice layer by heat conduction, so that the ice layer melts at the contact position between the ice layer and the specimen, and the biting force between the two is greatly reduced, so that the ice layer and the surface of the specimen are peeled off. The ice layer slides down and impacts the trigger alarm device, and the automatic timer stops timing. According to the length of the ice layer sliding time, the ice melting efficiency under different specimen materials and different microwave actions can be characterized.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] When the present invention is in use, microwave is used to irradiate the ice layer and the specimen. At the same time, the automatic timer is started. Under the action of microwave irradiation, the surface layer of the specimen heats up and the temperature rises. The energy is transferred to the ice layer embedded in the road surface by heat conduction, so that the contact ice layer melts, so that the freezing force between the ice layer and the surface of the specimen decreases, so that the ice layer peels off, slides down and impacts the trigger alarm device, and the automatic timer stops timing. According to the length of the ice layer sliding time, the ice melting efficiency of different pavement materials under the action of the microwave field can be characterized.

[0017] Furthermore, the support rod is a telescopic rod, which can adjust the angle between the chassis and the test frame between 15° and 80°, so as to test the efficiency of microwave ice melting under different road conditions.

[0018] Furthermore, by providing a flow passage for the water formed after the ice layer melts and a water tank for storing water, damage to equipment such as microwaves caused by snow water can be avoided.

[0019] Furthermore, by providing a handle, it is convenient to lift the test frame to adjust the angle between the chassis and the test frame. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the device of the present invention;

[0021] Figure 2 is a top view schematic diagram of the device of the present invention.

[0022] Figure 3 is a front elevation schematic diagram of the support rod with variable length.

[0023] Figure 4 is a partial schematic diagram of the support rod.

[0024] Figure 5 is a partial internal structure diagram of the support rod.

[0025] Figure 6 is a front elevation diagram of the water tank.

[0026] Figure 7 is a front view of the water tank.

[0027] Figure 8 is a top view of the water tank.

[0028] Among them, 1. water tank, 2. chassis, 3. support rod, 3-1. upper sleeve rod, 3-2. lower rod, 4. test frame, 5. ice layer, 6. test piece, 7. trigger alarm device, 8. stopper, 9. rotating shaft, 10. handle. Detailed Description of the Invention

[0029] The following further details the structure of the present invention with reference to the drawings:

[0030] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4, a device for measuring the microwave ice melting efficiency, comprising a chassis 2 and a test rack 4. The chassis 2 is arranged in a water tank 1. One end of the chassis 2 is connected to one end of the test rack 4 through a rotating shaft 9. A support rod 3 is arranged between the other end of the chassis 2 and the other end of the test rack 4. The support rod 3 is a telescopic rod, which is composed of a lower rod 3-2 and an upper sleeve rod 3-1. The two rods are connected by threads to achieve the purpose of changing the length. And the support rod 3 is movably connected to the other end of the chassis 2. The support rod 3 can form an angle of 15°-80° between the chassis 2 and the test rack 4. A specimen 6 for simulating a road surface is arranged on the test rack 4. An ice layer 5 is arranged on the specimen 6. The test rack 4 is composed of two test plates, and a gap is formed between the two test plates. The gap is used to provide a flow channel for the water formed after the ice layer 5 melts. A handle 10 is connected between the two test plates. A stopper 8 and a trigger alarm device 7 are also arranged on the test rack 4. The stopper 8 is used to prevent the specimen 6 from sliding on the test rack 4. The stopper 8 is two pieces, which are respectively arranged on the two test plates, and the stopper 8 is a wedge-shaped block. The trigger alarm device 7 is used to measure the time required from the microwave irradiating the ice layer 5 to the separation of the ice layer 5 from the specimen 6, and the trigger alarm device 7 is connected to an automatic timer.

[0031] The present invention will be further described in detail below in conjunction with specific embodiments:

[0032] The present invention relates to a device for measuring the microwave ice melting efficiency with adjustable angle. The bottom is a water tank 1 for holding the melted ice and snow as water. Above the water tank 1 is the core device of the present invention. First, there is a rectangular base frame 2 welded to the lower water tank 1. The size of the base frame 2 is 40 cm * 30 cm. Above the base frame 2 is a test frame 4 composed of two iron sheets with a width of 5 cm and adjustable angle, which is used to hold the ice layer 5 and the specimen 6. The thickness of the ice layer is 5 cm. The bottom of the test frame 4 is connected by a rotating shaft 9, and the end is connected by a handle 10 perpendicularly welded to the test frame 4, which is convenient for lifting the test frame 4. There is a support rod 3 for fixing the angle between the base frame 2 and the test frame 4. The lower part of the support rod 3 is detachably connected or rotatably connected to the lower base frame 2. The length of the support rod 3 between the test frame 4 and the base frame 2 can be adjusted within a certain range, and an angle of 15° to 80° can be formed between the test frame 4 and the base frame 2. The test angle is determined by the following method: First, the contact interface between the ice layer 5 and the specimen 6 is in a non-frozen state, that is, the ice layer 5 is directly placed on the specimen 6, and the test frame 4 is gradually lifted to measure the critical inclination angle when the ice layer 5 just slides off the specimen 6, denoted as α. When conducting the ice melting test in the frozen state of the specimen 6 and the ice layer 5, take (α + 5)° as the test angle. During the test, the test frame 4 is lifted to the determined test angle and fixed with the support rod 3. A wedge-shaped stopper 8 with specifications of 2 cm * 15 cm * 3 cm is welded to the rotatable test frame. A specimen 6 with dimensions of 15 cm * 15 cm * 5 cm is placed on the left side of the stopper 8. An ice layer 5 with dimensions of 15 cm * 15 cm * 5 cm is placed directly above the specimen 6. At the lower end of the stopper 8 is a trigger alarm device 7 with dimensions of 1 cm * 15 cm * 10 cm. The trigger alarm device 7 is connected to an automatic timer. When the upper ice layer slides down, it can trigger the automatic timer to stop timing.

[0033] During use, when the opening and angle of the test frame is (α + 5)°, the specimen with the frozen ice layer is irradiated with microwaves, and the automatic timer is started at the same time. Under the action of microwave irradiation, the surface layer of the specimen quickly heats up and the heat is transferred to the ice layer, melting the ice layer in contact into liquid water, so that the ice layer and the surface of the specimen are automatically separated, the ice block slides down and impacts the trigger device, and the automatic timer stops timing. According to the length of the ice layer sliding time, the ice and snow melting efficiency of different specimen materials under different microwave actions can be characterized.

Claims

1. A method for measuring the microwave ice melting efficiency, characterized in that An apparatus for measuring the microwave ice melting efficiency is adopted. The apparatus includes a chassis (2) and a test frame (4). One end of the chassis (2) is hinged to one end of the test frame (4). A support rod (3) is arranged between the other end of the chassis (2) and the other end of the test frame (4). The support rod (3) can form an angle between the chassis (2) and the test frame (4). A specimen (6) for simulating a road surface is arranged on the test frame (4). An ice layer (5) is arranged on the specimen (6). A stop block (8) and a trigger alarm device (7) are also arranged on the test frame (4). The stop block (8) is used to prevent the specimen (6) from sliding on the test frame (4). The trigger alarm device (7) is used to measure the time required from microwave irradiation of the ice layer (5) to the separation of the ice layer (5) from the specimen (6), and the trigger alarm device (7) is connected to an automatic timer. One end of the chassis (2) is connected to one end of the test frame (4) through a rotating shaft (9). The support rod (3) is a telescopic rod, and the support rod (3) is movably connected to the other end of the chassis (2). The specific method is as follows: Use microwave to irradiate the ice layer (5) and the specimen (6). At the same time, start the automatic timer. Under the action of microwave irradiation, the surface of the specimen (6) heats up and the temperature rises. The energy is transferred to the ice layer (5) through heat conduction, melting the contact position between the ice layer (5) and the specimen (6), greatly reducing the interlocking force between the two, so that the ice layer (5) and the surface of the specimen (6) are peeled off. The ice layer (5) slides down and impacts the trigger alarm device (7), and the automatic timer stops timing. According to the length of the sliding time of the ice layer (5), the ice melting efficiency under different specimen materials and different microwave actions can be characterized.

2. The method for measuring the microwave ice melting efficiency according to claim 1, characterized in that, The angle between the chassis (2) and the test frame (4) is 15° - 80°.

3. A method for measuring the microwave ice melting efficiency according to claim 1, characterized in that, The test frame (4) is composed of two test plates, and a gap is formed between the two test plates. The gap is used to provide a flow channel for the water formed after the ice layer (5) melts.

4. The method for measuring the microwave ice melting efficiency according to claim 3, characterized in that, A handle (10) is connected between the two test plates.

5. The method for measuring the microwave ice melting efficiency according to claim 3, characterized in that, The stop blocks (8) are two, respectively arranged on the two test plates, and the stop blocks (8) are wedge-shaped blocks.

6. The method for measuring the microwave ice melting efficiency according to claim 3, wherein The chassis (2) is arranged in a water tank (1).

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