Encapsulated phase change material durability test system

Abstract

The utility model discloses a durability testing system for a packaged phase-change material. The durability testing system comprises an environment box, an objective table, a sample bin, a temperature control device and a temperature measuring device, the objective table is arranged in a sealed environment box, a plurality of sample positions are arranged on the objective table, at least one of the sample positions is a vacant sample position, the temperature control device is arranged in the environment box and used for heating the environment box, and the temperature measuring device comprises an environment temperature measuring device and a sample temperature measuring device. The sample temperature measuring device is used for being embedded in a phase change material sample; the objective table is provided with a plurality of sample positions, the environment temperature and the sample temperature in the environment box are synchronously controlled through the temperature control device, so that the experiment group and the control group are in the same environment, and the set control group has higher credibility in the same high-low temperature alternating environment box; the durability of a plurality of phase-change material samples can be tested at the same time, so that the experiment precision is improved, and the experiment efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material testing equipment, in particular to a packaging phase change material durability testing system. Background Art

[0002] Phase change material is a latent heat storage material with great potential in road engineering applications. It can effectively improve road diseases such as rutting, deformation, and frost cracking under high and low temperature conditions. After the asphalt pavement mixed with phase change material is put into use, its durability becomes an important indicator for evaluating the service life of asphalt pavement. The traditional durability test of phase change material samples is to embed the thermal resistance temperature sensor into the phase change material sample, and then seal it in the insulation barrel with asphalt, put the phase change material sample with embedded temperature sensor into the insulation barrel, and then pour 2L 95℃ hot water (about 2 kg) into the inside to make the sample completely immersed in hot water. Pour the same amount of 95℃ hot water into the insulation barrel for blank control comparison. Quickly use insulation sponge, cotton towel, and insulation cover to cover the two insulation barrels in turn to reduce heat loss during the experiment. Finally, the temperature measurement system is used to read the temperature data of the hot water in the two insulation barrels and the asphalt mixture sample. The test is completed when the water and the mixture sample have the same temperature.

[0003] During the experiment, the control group and the experimental group were placed in two different insulation barrels. First, the two insulation barrels were different. Second, the amount and time of hot water added were difficult to control, because the blank control group must have more hot water than the experimental group, so the control group could not maintain the same conditions as the experimental group, which affected the accuracy of the experiment. In addition, there were many experimental equipments, which not only consumed more energy of scientific researchers during the experiment, but also took up more space, which was very unfavorable to the convenience and credibility of modern research. Therefore, it is very necessary to design a more simple and reliable phase change material durability test system. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a packaged phase change material durability testing system, which solves the defects of experimental conditions and low efficiency in the existing phase change material durability testing system and improves the test system efficiency.

[0005] The utility model is realized by the following technical solutions:

[0006] A durability testing system for a packaged phase change material, comprising an environmental chamber, a stage, a sample chamber, a temperature control device and a temperature measuring device;

[0007] The stage is arranged in a sealed environmental box, and a plurality of sample positions are arranged on the stage, at least one of the plurality of sample positions is vacant, a temperature control device is arranged in the environmental box, and is used to heat the environmental box, and a temperature measuring device includes an environmental temperature measuring device and a sample temperature measuring device, and the sample temperature measuring device is used to be buried in a phase change material sample.

[0008] Preferably, the sample positions are a plurality of grooves arranged on the top surface of the stage, and sample chambers for carrying samples are arranged in the grooves.

[0009] Preferably, filter holes are provided at the bottom of the sample bin, and filter paper is laid in the sample bin.

[0010] Preferably, the temperature control device includes a heating device and a temperature controller connected thereto, the heating device is arranged in the environmental box, and the temperature controller is arranged outside the environmental box.

[0011] Preferably, a fan is also provided on the side wall of the environmental box.

[0012] Preferably, the temperature measuring device comprises an environment temperature measuring device and a sample temperature measuring device, the sample temperature measuring device is used to be buried in the phase change material sample, and the environment temperature measuring device is used to measure the temperature of the environmental box.

[0013] Preferably, the ambient temperature measuring device and the sample temperature measuring device are both temperature sensors, and are connected to a temperature control device.

[0014] Preferably, a lighting device is also provided in the environmental chamber.

[0015] Preferably, one side of the environmental box is made of high temperature resistant glass, and the other side is provided with a switch door.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model provides a packaged phase change material durability testing system, in which a temperature control device, a temperature measuring device, a light, a ventilation fan and a stage are arranged in a sealed environmental box, the stage is provided with a plurality of sample positions, and the ambient temperature in the environmental box and the temperature of the samples are synchronously controlled by the temperature control device, so that the experimental group and the control group are in the same environment, and in the same high and low temperature alternating environmental box, the control group arranged has a higher credibility, and the durability tests can be performed on a plurality of phase change material samples at the same time, so that the experimental accuracy is improved, and the experimental efficiency is also improved; in addition, the testing system integrates a plurality of devices in the environmental box, so that the space of the experimental equipment is saved, and the temperature control adopts a touch screen controller, so that the parameters can be conveniently adjusted according to the needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the durability testing system for encapsulated phase change materials of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the fan of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the lighting lamp of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the switch door handle of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the fixing protrusion of the utility model;

[0023] Figure 6 This is a schematic diagram of the door lock structure of the utility model for opening and closing a door;

[0024] Figure 7 It is a structural schematic diagram of the loading platform of the utility model;

[0025] Figure 8 This is the internal structure diagram of the environmental box of the utility model.

[0026] In the figure, environmental chamber 1, stage 7, switch door 10, fan 2, temperature controller 3, light lamp 4, temperature detector 5, computer 6, sample position 8, sample compartment 9, plug 11, door lock 12, door handle 13, fan bracket 16, fan blade 17, lamp holder 18, raised block 19, lock shaft 20, iron sheet 21, limit piece 22, lamp tube 23. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0028] See also Figure 1-8 , a durability testing system for a packaged phase change material, comprising an environmental chamber 1, a stage 7, a sample chamber 9, a temperature control device and a temperature measuring device.

[0029] The stage is arranged in a sealed environmental box 1, and a plurality of sample positions 8 are arranged on the stage, at least one of the plurality of sample positions is vacant, a temperature control device is arranged in the environmental box 1, and is used to heat the environmental box, and a temperature measuring device includes an environmental temperature measuring device and a sample temperature measuring device, and the sample temperature measuring device is used to be buried in a phase change material sample.

[0030] In the durability test system, during the test process, empty sample positions are left without samples and serve as a control group, and phase change material samples are placed in the remaining sample positions as an experimental group. A sample temperature measuring device is buried inside the phase change material sample, and the ambient temperature in the environmental box and the temperature of the sample are synchronously controlled by a temperature control device, so that the experimental group and the control group are in the same environment, thereby improving the experimental accuracy and also improving the experimental efficiency.

[0031] The environmental chamber is a hollow structure, with the stage 7 located on the bottom surface of the environmental chamber 1, and the sample positions 8 are multiple grooves arranged on the top surface of the stage 7. During the experiment, at least one groove is kept in an idle device, that is, no sample is placed, as a reference group for the experiment, and samples are placed in the remaining sample positions as experimental groups. Using one reference group, multiple samples can be subjected to synchronous experiments, which greatly improves the experimental efficiency.

[0032] The phase change material sample is placed in the sample bin 9, and the sample is placed in the sample position through the sample bin 9. In the laboratory, the sample is prepared outside the environmental chamber, and then the sample bin 9 is placed in the sample position, which solves the problem of difficulty in taking and placing samples in the narrow space of the environmental chamber and improves the experimental efficiency. The sample bin 9 is a top opening structure with filter holes at the bottom. Each sample bin is provided with a replaceable filter paper for obtaining the amount of sample seepage in the durability test.

[0033] The temperature control device includes a heating device and a temperature controller 3 connected thereto, the heating device is arranged in the environmental box, the temperature controller 3 is arranged outside the environmental box, the heating device is a heating tube or a heating resistance wire, the heating device is arranged on the side wall of the environmental box, the heating temperature is controlled by the temperature controller 3, and the experimental group and the control group are heated by heat radiation. In this embodiment, the temperature controller 3 is installed in front of the environmental box 1, and the temperature controller 3 is a touch screen controller.

[0034] A fan 2 is also provided on the side wall of the environmental box, and the fan 2 is installed on the right side of the environmental box 1. The fan 2 and the fan switch are fixed to the environmental box 1 by a fan bracket 16. The fan consists of four fan blades 17. The fan switch is set on the outer wall of the environmental box. The temperature inside the environmental box is regulated by the fan 2 to create a high and low temperature alternating environment. At the same time, after the experiment, the environmental box is quickly cooled down by the fan.

[0035] The illumination lamp 4 is installed on the inner top of the environmental box 1 and consists of four lamp holders 18 and two lamp tubes 23. The illumination lamp switch is arranged on the left side of the environmental box 1 to facilitate observation of the state of the sample during the experiment.

[0036] The environment temperature measuring device and the sample temperature measuring device are both temperature sensors 5 , which are connected to the temperature controller 3 . The environment temperature measuring device is arranged on the side wall of the environment box, and a plurality of sample temperature measuring devices are embedded in the sample through wires.

[0037] A switch door 10 is provided on the rear side of the environmental box 1, and the front side of the environmental box 1 is made of high temperature resistant glass. The upper end of the switch door 10 is rotatably connected to the rear side of the environmental box 1, and a handle 13 and two door locks 12 are provided on the lower end of the switch door 10. The handle 13 is provided in the middle of the lower end of the switch door 10, and the two door locks 12 are respectively located on both sides of the handle 13. A plug 11 is also provided on the environmental box for connecting a power source.

[0038] The door lock includes two iron sheets 21, a lock shaft 20, a stopper 22 and a protruding block 19. The two iron sheets are respectively arranged on the switch door and the rear side wall of the environmental chamber. One end of the lock shaft 20 is connected to one of the iron sheets through a rotating shaft. The protruding block 19 is arranged at one end of the lock shaft 20. The stopper 22 is arranged on the other iron sheet and is located on the rotation path of the lock shaft 20. The stopper 22 is provided with a slot into which the lock shaft 20 can be inserted. The door handle 20 is provided with a sliding slot, and the fixed protruding block 19 is installed in the sliding slot.

[0039] The utility model conducts the steps of the phase change material durability test:

[0040] 1. Connect the temperature control device to the computer 6, and the temperature control device inputs the heating temperature, the ambient temperature measured by the temperature sensor and the sample temperature into the computer in real time.

[0041] 2. Open the environmental chamber, place filter paper at the bottom, put the prepared phase change material sample into the sample chamber, and then place the sample chamber into the sample position on the stage.

[0042] 3. Close the door of the environmental chamber, set the required temperature for the experiment, turn on the fan, and create a high and low temperature alternating environment.

[0043] 4. Obtain the temperature in the environmental chamber through the computer, wait for the phase change material durability test to be completed, and perform material durability analysis based on the acquired data.

[0044] The durability test of the phase change material includes a durability test in air and a durability test in water. When the durability test in water is performed, a certain amount of water is injected into the sample position and the water submerges the sample, and the water temperature is controlled by thermal radiation.

[0045] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A packaged phase change material durability testing system, characterized in that: It includes an environmental chamber, a stage, a sample chamber, a temperature control device and a temperature measuring device; The stage is arranged in a sealed environmental box, and a plurality of sample positions are arranged on the stage, at least one of the plurality of sample positions is vacant, a temperature control device is arranged in the environmental box, and is used to heat the environmental box, and a temperature measuring device includes an environmental temperature measuring device and a sample temperature measuring device, and the sample temperature measuring device is used to be buried in a phase change material sample.

2. A packaged phase change material durability testing system according to claim 1, characterized in that: The sample positions are a plurality of grooves arranged on the top surface of the stage, and sample chambers for carrying samples are arranged in the grooves.

3. A packaged phase change material durability testing system according to claim 2, characterized in that: The bottom of the sample bin is provided with filter holes, and filter paper is laid in the sample bin.

4. A packaged phase change material durability testing system according to claim 1, characterized in that: The temperature control device comprises a heating device and a temperature controller connected thereto. The heating device is arranged in the environmental box, and the temperature controller is arranged outside the environmental box.

5. A packaged phase change material durability testing system according to claim 1, characterized in that: A fan is also provided on the side wall of the environmental box.

6. A packaged phase change material durability testing system according to claim 1, characterized in that: The temperature measuring device comprises an environment temperature measuring device and a sample temperature measuring device. The sample temperature measuring device is used to be buried in the phase change material sample, and the environment temperature measuring device is used to measure the temperature of the environment box.

7. A packaged phase change material durability testing system according to claim 6, characterized in that: The environment temperature measuring device and the sample temperature measuring device are both temperature sensors and are connected to the temperature control device.

8. The packaged phase change material durability testing system according to claim 1, characterized in that: The environmental box is also provided with a lighting device.

9. A packaged phase change material durability testing system according to claim 1, characterized in that: One side of the environmental box is made of high temperature resistant glass, and the other side is provided with a switch door.

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