CN113640346A - Heat insulation performance testing device and testing method - Google Patents
Heat insulation performance testing device and testing method Download PDFInfo
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- CN113640346A CN113640346A CN202110948531.3A CN202110948531A CN113640346A CN 113640346 A CN113640346 A CN 113640346A CN 202110948531 A CN202110948531 A CN 202110948531A CN 113640346 A CN113640346 A CN 113640346A
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- 238000009413 insulation Methods 0.000 title claims description 79
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- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 abstract description 9
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- 238000012372 quality testing Methods 0.000 description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses heat-insulating property testing device and method, relates to the field of machinery, and aims to solve the problem that heat-insulating property of a heat-insulating material under high-temperature and high-pressure conditions is difficult to test in a targeted manner in the related art. The heat-insulating property testing arrangement includes: the device comprises a sample table, a heating part, a first temperature sensor, a second temperature sensor and a pressure sensor; the setting position of the first temperature sensor corresponds to the setting position of the second temperature sensor; the first temperature sensor is arranged on the surface of the sample table corresponding to the heating part; the second temperature sensor is arranged on the surface of the heating part corresponding to the sample table; the heating part is a movable heating part and moves horizontally along the direction close to the sample table, so that one side of a sample placed on the sample table is in contact with the first temperature sensor, and the other side of the sample is in contact with the second temperature sensor; the pressure sensor is arranged on the surface of the sample table, which faces away from the heating part.
Description
Technical Field
The application belongs to the field of machinery, and particularly relates to a heat insulation performance testing device and a testing method.
Background
In the industrial field, it is very important to test the heat insulating performance of heat insulating materials.
In the related art, the heat insulating property of an insulating material is tested, and the heat insulating property is generally determined by simulating a difference between temperatures of a heating surface and a non-heating surface of the insulating material in a high-temperature environment.
The inventor finds that the heat insulation performance of the heat insulation material under the conditions of high temperature and high pressure is not tested in a targeted manner at present. For example, when the battery is out of control due to thermal runaway, a large amount of heat is released, and the battery cell expands and bulges to generate a large impact force, so that the surrounding battery cell is damaged. At present, the thermal insulation performance of thermal insulation materials in an easily-expanded part such as a battery or an easily-exploded part (such as the thermal insulation materials in a new energy automobile battery) under high-temperature and high-pressure conditions is not tested in a targeted manner.
Disclosure of Invention
The embodiment of the application provides a heat insulation performance testing device and a testing method, and solves the problem that in the related art, the heat insulation performance of a heat insulation material under the conditions of high temperature and high pressure is difficult to test in a targeted manner.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a thermal insulation performance testing apparatus, including: the device comprises a sample table, a heating part, a first temperature sensor, a second temperature sensor and a pressure sensor;
the arrangement position of the first temperature sensor corresponds to the arrangement position of the second temperature sensor; wherein the first temperature sensor is arranged on the surface of the sample table corresponding to the heating part; the second temperature sensor is arranged on the surface of the heating part corresponding to the sample table;
the heating part is a movable heating part which translates along the direction close to the sample table, so that one side of a sample placed on the sample table is in contact with the first temperature sensor, and the other side of the sample is in contact with the second temperature sensor;
the pressure sensor is arranged on the surface of the sample table, which is far away from the heating part.
In a second aspect, an embodiment of the present invention provides a method for testing thermal insulation performance, which is applied to the thermal insulation performance testing apparatus according to the first aspect, and includes:
responding to target parameters input by a user, and keeping the sample in an environment with preset temperature and preset pressure for a preset time period; the target parameters comprise a preset time period, a preset temperature and a preset pressure;
after the sample is kept in the environment with the preset temperature and the preset pressure within a preset time period, simultaneously acquiring a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor, and determining the heat insulation performance of the sample under a target parameter based on the difference between the second temperature and the first temperature.
The heat-insulating property testing device provided by the embodiment of the application comprises a sample table, a heating part, a first temperature sensor, a second temperature sensor and a pressure sensor; the arrangement position of the first temperature sensor corresponds to the arrangement position of the second temperature sensor; wherein the first temperature sensor is arranged on the surface of the sample table corresponding to the heating part; the second temperature sensor is arranged on the surface of the heating part corresponding to the sample table; the heating part is a movable heating part which translates along the direction close to the sample table, so that one side of a sample placed on the sample table is in contact with the first temperature sensor, and the other side of the sample is in contact with the second temperature sensor; the pressure sensor is arranged on the surface of the sample table, which is far away from the heating part. Like this, under the condition that adopts above-mentioned heat-proof quality testing arrangement to test the heat-proof quality of sample, the sample is placed sample bench back can make the heating block heat to predetermineeing the temperature, and the heating block is along the direction downward translation that is close to sample platform, and at this moment, the heating block downward translation can be applyed and predetermine pressure to sample, and pressure sensor can record the pressure that the sample received, and first temperature sensor and second temperature sensor can record the temperature of sample both sides. Therefore, the test of the heat insulation performance of the sample under the high-temperature and high-pressure environment is realized, and the problem that the heat insulation performance of the heat insulation material under the high-temperature and high-pressure condition is difficult to test in a targeted manner in the related art is solved.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a thermal insulation performance testing apparatus according to an embodiment of the present application;
fig. 2 is a schematic view of another thermal insulation performance testing device provided in the present application;
fig. 3 is a schematic view of another thermal insulation performance testing device provided in the present application;
fig. 4 is a schematic view of another thermal insulation performance testing device provided in the present application;
fig. 5 is a schematic view of another thermal insulation performance testing device provided in the present application;
fig. 6 is a schematic view of another thermal insulation performance testing device provided in the present application;
fig. 7 is a schematic view of another thermal insulation performance testing device provided in the embodiment of the present application;
fig. 8 is a schematic flow chart of a method for testing thermal insulation performance according to an embodiment of the present application; description of reference numerals:
100-sample stage; 110 — a first temperature sensor; 120-a second temperature sensor; 130-a pressure sensor; 200-a heating unit; 300-a cross beam; 310-a slider; 311-a first slider; 312-a second slider; 400-column; 410-a first column; 420-a second upright; 500-a servo motor; 510-a first servo motor; 520-a second servo motor; 600-a screw rod; 610-a first lead screw; 620-second lead screw; 700-a reducer; 800-synchronous belt; 900-a bearing; 910-a base; 920-a heat sink; 930-a box body; 931-exhaust holes; 940-a controller; 950-a display screen; 960 — control panel.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be noted that the terms "connected" and "connected," unless otherwise specifically stated or limited, are to be construed broadly, e.g., as meaning directly connected to one another, indirectly connected through an intermediary, and communicating between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Exemplary embodiments of the present application will be described in more detail below with reference to fig. 1-8.
Fig. 1 is a schematic view of an apparatus for testing thermal insulation performance according to an embodiment of the present application.
As shown in fig. 1, the thermal insulation performance testing apparatus provided in the embodiment of the present application may include: a sample stage 100, a heating member 200, a first temperature sensor 110, a second temperature sensor 120, and a pressure sensor 130;
the arrangement position of the first temperature sensor 110 corresponds to the arrangement position of the second temperature sensor 120; wherein, the first temperature sensor 110 is arranged on the surface of the sample table 100 corresponding to the heating component 200; the second temperature sensor 120 is disposed on the surface of the heating member 200 corresponding to the sample stage 100;
the heating component 200 is a movable heating component, and the heating component 200 translates along the direction close to the sample table, so that one side of the sample placed on the sample table is in contact with the first temperature sensor, and the other side of the sample is in contact with the second temperature sensor;
In the embodiment of the present application, the sample stage 100 may be used for carrying a sample, and the sample is a material to be tested for thermal insulation performance, such as an insulation material used in a battery or other materials. The sample stage can be made of a material having good heat resistance and high strength. For example, the sample stage may be made of metal or other materials, and the present application is not limited specifically.
In the embodiment of the present application, the first temperature sensor 110 and the second temperature sensor 120 can be used for measuring the temperature of the non-hot side and the temperature of the heating side of the sample. For example, the first temperature sensor and the second temperature sensor may be contact temperature sensors, and in this case, the first temperature sensor and the second temperature sensor may have a layered structure, which may increase a contact area between the temperature sensor and the sample, and improve the accuracy of detection. For another example, the first temperature sensor and the second temperature sensor may also be non-contact temperature sensors or other types of temperature sensors, and the application is not particularly limited.
In the embodiment of the present application, the pressure sensor 130 can be used to detect the pressure applied to the sample. For example, the pressure sensor may be a piezoresistive pressure sensor, a ceramic pressure sensor, or other type of pressure sensor, and the application is not particularly limited.
In the embodiment of the present application, the heating unit 200 may be a unit for heating the sample placed on the sample stage. For example, the heating component may be a heating wire, a heating tube, or other types of heating components, and the application is not particularly limited.
In addition, in the embodiment of the present application, the heating member 200 may be a movable heating member that is translated in a direction close to the sample stage such that one side of the sample placed on the sample stage is in contact with the first temperature sensor and the other side of the sample is in contact with the second temperature sensor. In addition, under the condition that two sides of the sample are respectively contacted with the first temperature sensor 110 and the second temperature sensor 120, the heating component can apply downward preset pressure to the sample, and the pressure sensor can measure the pressure applied to the sample.
It can be understood that, in the related art, the heat insulating property of the heat insulating material is tested, and the heat insulating property is generally determined by simulating the difference between the temperatures of the heating surface and the non-heating surface of the heat insulating material in a high temperature environment. However, it is difficult to effectively test the heat insulating performance of a heat insulating material (e.g., a heat insulating material in a battery for a new energy automobile) under high temperature and high pressure conditions in a targeted manner. When the battery is out of control due to heat, a large amount of heat is released, and the battery cell expands and bulges to generate large impact force, so that the battery cell around the battery out of control due to heat is damaged. If the test is only carried out on the heat insulation material under the high-temperature environment, the actual situation of the battery under the thermal runaway condition is difficult to effectively simulate.
Based on this, this application embodiment can be tested the thermal-insulated performance of thermal-insulated material under high temperature high pressure environment, prevents that the battery from causing bigger destruction when taking place danger. Specifically, in the heat insulation performance testing device provided by the embodiment of the application, the heating part is heated to simulate that the heat insulation material is in a high-temperature environment; the heating member continues to translate downward while in contact with the sample to apply pressure to the sample, thereby simulating that the insulating material is in a high pressure environment, and the first temperature sensor 110 and the second temperature sensor 120 can be used to detect the temperature of the non-heated side of the sample and the temperature of the heated side, respectively. Therefore, the heat insulation performance testing device provided by the embodiment of the application can realize the test of the heat insulation performance of the sample under the high-temperature and high-pressure environment, and solves the problem that the heat insulation performance of the heat insulation material under the high-temperature and high-pressure condition is difficult to test in a targeted manner in the related art.
The heat-insulating property testing device provided by the embodiment of the application comprises a sample table, a heating part, a first temperature sensor, a second temperature sensor and a pressure sensor; the arrangement position of the first temperature sensor corresponds to the arrangement position of the second temperature sensor; wherein the first temperature sensor is arranged on the surface of the sample table corresponding to the heating part; the second temperature sensor is arranged on the surface of the heating part corresponding to the sample table; the heating part is a movable heating part which translates along the direction close to the sample table so as to enable two sides of the sample placed on the sample table to be respectively contacted with the first temperature sensor and the second temperature sensor; the pressure sensor is arranged on the surface of the sample table, which is far away from the heating part. Like this, under the condition that uses above-mentioned heat-proof quality testing arrangement to test the heat-proof quality of sample, the sample is placed sample bench back can make the heating block heat to predetermineeing the temperature, and the heating block is along the direction downward translation that is close to sample platform, and at this moment, the heating block downward translation can be applyed and predetermine pressure to sample, and pressure sensor can record the pressure that the sample received, and first temperature sensor and second temperature sensor can record the temperature of sample both sides. Therefore, the test of the heat insulation performance of the sample under the high-temperature and high-pressure environment is realized, and the problem that the heat insulation performance of the heat insulation material under the high-temperature and high-pressure condition is difficult to test in a targeted manner in the related art is solved.
In a specific embodiment, the first temperature sensor and the second temperature sensor may be contact temperature sensors, and in order to improve the accuracy of temperature detection, one side of the first temperature sensor may be exposed from the sample stage, and one side of the second temperature sensor may be exposed from the heating member. The following is a detailed description taking fig. 1 as an example.
In the device for testing heat insulation performance provided in the embodiment of the present application, the first temperature sensor 110 is embedded in the sample stage 100, and a surface of the first temperature sensor 110 and a first surface are located on the same plane, where the first surface is a surface of the sample stage facing the heating member; the second temperature sensor 120 is embedded in the heating member 200, and a surface of the second temperature sensor and a second surface of the second temperature sensor are located on the same plane, and the second surface is a surface of the heating member facing the sample stage. Thus, after the sample is placed on the sample stage 100, both sides of the sample can be sufficiently contacted with the first temperature sensor and the second temperature sensor, improving the accuracy of temperature detection.
In addition, the first temperature sensor and the second temperature sensor can be of a laminated structure, so that the contact area of the sample with the first temperature sensor and the second temperature sensor is increased, and the accuracy of temperature detection is further improved.
Fig. 2 is a schematic view of another thermal insulation performance testing apparatus provided in the embodiment of the present application.
It can be understood that, in order to enable the heating component to translate along the direction close to the sample stage, the thermal insulation performance testing device provided by the embodiment of the application may further include a beam connected to the heating component, and the heating component is driven to translate by moving the beam. The following description will be made specifically by taking fig. 2 as an example.
In a specific embodiment, as shown in fig. 2, the thermal insulation performance testing apparatus provided in the embodiment of the present application may further include: cross beam 300 and column 400; the cross beam has an end face and a side face;
the end surface of the cross beam is connected with the upright column 400 through a sliding block 310, and the length direction of the cross beam is vertical to that of the upright column;
the side surface of the beam is connected with the surface, deviating from the sample table, of the heating component, and the beam translates along the length direction of the upright column through a sliding block so as to drive the heating component to translate.
In the embodiment of the present application, the connection between the cross beam and the heating component may be a fixed connection or a detachable connection, and the present application is not particularly limited.
In the embodiment of the present application, as shown in fig. 2, a side surface of the cross beam is connected to a surface of the heating member away from the sample stage, so that when the cross beam is translated along the length direction of the column through the slider, the heating member can be driven to translate along the direction close to the sample stage.
The following description will be given by way of example of an embodiment in which the cross-beam is translated in the longitudinal direction of the uprights by means of slides. In a specific embodiment, as shown in fig. 3, the thermal insulation performance testing apparatus provided in the embodiment of the present application may further include a servo motor 500, a screw rod 600 is disposed in the upright column 400, and a length direction of the screw rod 600 is the same as a length direction of the upright column; the slider 310 is sleeved on the screw rod 600, and the servo motor 500 is connected with one end of the screw rod 600.
In this application embodiment, servo motor rotates and drives the lead screw and rotate, and the lead screw rotates and drives the slider and reciprocate. Because the slider is connected with the end face of the cross beam, the cross beam translates along with the slider when the slider moves. The rotating angle of the servo motor and the rotating angle of the screw rod have a corresponding relation, the rotating angle of the screw rod and the displacement of the sliding block have a corresponding relation, and the displacement of the sliding block is the displacement of the cross beam during up-and-down translation. Therefore, the transverse beam can be translated along the length direction of the upright column through the sliding block through the servo motor.
In a specific embodiment, as shown in fig. 3, the thermal insulation performance testing apparatus provided in the embodiment of the present application may further include a reducer 700, and the servo motor 500 is connected to one end of the lead screw 600 through the reducer 700. In the embodiment of the present application, the decelerator 700 may play a role of matching a rotation speed and transmitting a torque between the servo motor and the screw rod. For example, a speed reducer may be used to expand the torque to reduce power consumption of the servo motor.
Fig. 4 is a schematic view of another thermal insulation performance testing apparatus provided in the embodiment of the present application.
It will be appreciated that, in practice, the end faces of the cross beam may include a first end face and a second end face; if the first terminal surface and the second terminal surface of crossbeam are connected with the stand respectively, in order to make the first terminal surface and the second terminal surface synchronous motion of crossbeam, the heat-proof quality testing arrangement that this application embodiment provided still can include the hold-in range. The following description will be made specifically by taking fig. 4 as an example.
In a specific embodiment, as shown in fig. 4, the thermal insulation performance testing apparatus provided in the embodiment of the present application may further include a timing belt 800,
the upright column 400 comprises a first upright column 410 and a second upright column 420, wherein a first screw rod 610 is arranged in the first upright column 410, and a second screw rod 620 is arranged in the second upright column 420; the servo motor 500 includes a first servo motor 510 and a second servo motor 520; one end of the first lead screw is connected with a first servo motor, one end of the second lead screw is connected with a second servo motor, and the other end of the first lead screw 610 is connected with the other end of the second lead screw through the synchronous belt 800.
Specifically, as shown in fig. 4, a first end surface of the cross beam 300 is connected to the first vertical column 410 through the first slider 311, and a length direction of the cross beam is perpendicular to a length direction of the first vertical column;
the second end surface of the cross beam 300 is connected with the second upright column 420 through the second sliding block 312, and the length direction of the cross beam is perpendicular to the length direction of the second upright column;
the other end of the first lead screw 610 is connected with the synchronous belt 800 through a bearing 900.
At this time, the synchronous belt 800 may be used to synchronize the rotation speeds of the first lead screw and the second lead screw, so that the first end surface and the second end surface of the beam move synchronously, and the effect of beam translation is realized.
Fig. 5 is a schematic view of another thermal insulation performance testing apparatus according to an embodiment of the present application.
It can be understood that, in practical application, in order to improve the testing efficiency, after the testing work of one sample is completed, the sample stage can be cooled so as to quickly place the next sample. The heat-proof quality testing arrangement that this application embodiment provided can also include the radiator. The following is described specifically by taking fig. 5 as an example.
In a specific embodiment, as shown in fig. 5, the thermal insulation performance testing apparatus provided in the embodiments of the present application may further include a base 910 and a heat sink 920,
the heat sink 910 is embedded in the base 920, and the first temperature sensor, the sample stage, the pressure sensor and the base are sequentially stacked.
In an embodiment of the present application, the base may be used to carry a sample stage. The radiator can be used for radiating the sample platform, reduces the cooling time of the sample platform, and improves the testing efficiency of the heat-insulating property testing device. The heat sink may be a radiation heat sink, a convection heat sink, or other type of heat sink, and the application is not particularly limited.
Fig. 6 is a schematic view of another thermal insulation performance testing apparatus according to an embodiment of the present application.
It can be understood that, in practical application, in order to discharge the toxic flue gas generated by the sample in the heating process, and facilitate the operator to place the next sample to be tested, the thermal insulation performance testing device provided by the embodiment of the present application may further include an exhaust hole disposed on the box body. The following is described specifically by taking fig. 6 as an example.
In a specific embodiment, as shown in fig. 6, the thermal insulation performance testing apparatus provided by the embodiment of the present application may further include a case 930,
the sample stage 100, the heating component 200, the first temperature sensor 110, the second temperature sensor 120 and the pressure sensor 130 are all disposed in the box; the case 930 has an exhaust hole 931 formed on a surface thereof facing the heating member 200. Therefore, the poisonous smoke generated by the sample in the heating process is discharged through the exhaust hole 931, and the next sample to be tested is placed by an operator conveniently.
Fig. 7 is a schematic view of another thermal insulation performance testing apparatus according to an embodiment of the present application.
It can be understood that, in practical applications, in order to facilitate an operator to preset test conditions (for example, preset temperature, preset pressure, preset time, and the like) for a sample, the thermal insulation performance testing apparatus provided in the embodiments of the present application may further include a controller, a display screen, and an operation panel. The following description will be made specifically by taking fig. 7 as an example.
In a specific embodiment, as shown in fig. 7, the thermal insulation performance testing apparatus provided in the embodiment of the present application may further include a controller 940, a display screen 950 and a control panel 960;
the display screen is electrically connected with the controller; the control panel is electrically connected with the controller; the first temperature sensor is electrically connected with the controller; the second temperature sensor is electrically connected with the controller; the pressure sensor is electrically connected with the controller; the servo motor is electrically connected with the controller.
In this embodiment, the control panel 960 is an input device, which is convenient for a user to set test conditions for setting a sample, where the test conditions may include a preset temperature, a preset pressure, a preset time, and the like.
In this embodiment, after receiving the test condition input by the control panel, the controller 940 may control the heating element to heat to a preset temperature, and control the servo motor to operate so that the heating element applies pressure to the sample.
In the embodiment of the present application, the display screen 950 can be used to display the test conditions input by the control panel 960, and can also be used to display the data detected by the first temperature sensor, the second temperature sensor, and the pressure sensor.
Fig. 8 is a schematic flowchart of a method for testing thermal insulation performance according to an embodiment of the present application, and referring to fig. 8, the method for testing thermal insulation performance according to the embodiment of the present application may be applied to a device for testing thermal insulation performance according to an embodiment of the present application, and the method for testing thermal insulation performance according to an embodiment of the present application may include:
step 810: responding to target parameters input by a user, and keeping the sample in an environment with preset temperature and preset pressure for a preset time period; the target parameters comprise a preset time period, a preset temperature and a preset pressure;
step 820: after the sample is kept in the environment with the preset temperature and the preset pressure within a preset time period, simultaneously acquiring a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor, and determining the heat insulation performance of the sample under a target parameter based on the difference between the second temperature and the first temperature.
In step 810-;
under the condition that two sides of the sample are respectively contacted with the first temperature sensor and the second temperature sensor, responding to the fact that the pressure sensor detects that the pressure applied to the sample reaches a preset pressure, starting recording time, and keeping the sample in an environment with the preset temperature and the preset pressure within a preset time period;
after the recording time is started to reach a preset time period, simultaneously acquiring a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor, and determining the heat insulation performance of the sample under a target parameter based on the difference between the second temperature and the first temperature;
wherein the target parameter is an environment in which the sample is maintained at the preset temperature and the preset pressure for the preset time period.
Wherein the larger the difference between the second temperature and the first temperature, the better the thermal insulation performance of the sample under the target parameter.
According to the test method for the heat insulation performance, a sample placed on the sample table is kept in an environment with a preset temperature and a preset pressure within a preset time period in response to target parameters input by a user; the target parameters comprise a preset time period, a preset temperature and a preset pressure; after the sample is kept in the environment with the preset temperature and the preset pressure within the preset time period, simultaneously acquiring a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor, and determining the heat insulation performance of the sample under a target parameter based on the difference between the second temperature and the first temperature. Like this, under the condition that uses above-mentioned heat-proof quality testing arrangement to test the heat-proof quality of sample, the sample is placed sample bench back can make the heating block heat to predetermineeing the temperature, and the heating block is along the direction downward translation that is close to sample platform, and at this moment, the heating block downward translation can be applyed and predetermine pressure to sample, and pressure sensor can record the pressure that the sample received, and first temperature sensor and second temperature sensor can record the temperature of sample both sides. Therefore, the test of the heat insulation performance of the sample under the high-temperature and high-pressure environment is realized, and the problem that the heat insulation performance of the heat insulation material under the high-temperature and high-pressure condition is difficult to test in a targeted manner in the related art is solved.
In practical applications, for example, the testing temperature of the thermal insulation performance testing device provided in the embodiment of the present application may be 0 to 1000 ℃, the testing pressure may be 0 to 2MPa, the thickness of the testing sample may be 0.5 to 100mm, and the precision of the thermal insulation performance testing device may be 0.1 ℃, 0.001N, and 0.01 mm.
In practical application, the device for testing the heat insulation performance provided by the embodiment of the application can be used for testing the heat insulation performance of a heat insulation material, and the specific steps are as follows:
(1) a user sets a target temperature and a target pressure to be tested through a control panel, and adjusts the beam to a position close to the sample table;
(2) preparing a sample to be measured, heating the part to be measured to a target temperature, placing the sample to be measured on a sample table, controlling the heating part to move downwards to the upper surface of the sample to be measured, and pressurizing the sample to be measured to a target pressure by the beam and the heating part through the servo motor.
(3) After the sample to be detected continues for a preset time period under the conditions of the target temperature and the target pressure, respectively acquiring a first temperature of a non-hot surface of the sample to be detected and a second temperature of a heating surface through a first temperature sensor and a second temperature sensor, and displaying the first temperature and the second temperature on a display screen.
(4) After the sample test is finished, the heating part automatically moves upwards to the initial position, the radiator at the lower part of the sample table is started to radiate the sample table to the room temperature or the set temperature, the exhaust hole of the box body shell is opened, smoke generated in the test is exhausted, and the test operation of the next sample is facilitated.
In terms of distance, firstly, the target pressure of a sample to be tested is set to be 0.9MPa, the target temperature of a heating surface is set to be 600 ℃, the time lasts for 30 minutes, pressurization is started when the pressure is set to be greater than 0.001N, namely, the pressure is recorded when the heating surface is lowered to contact with the sample, the sample to be tested (such as a ceramic fiber composite silica aerogel felt heat insulation sheet) is placed on a sample table during testing, after the temperature of the heating surface is raised to 600 ℃, a heating part is lowered to contact with the sample to be tested, the testing is carried out, and the temperature is maintained at 600 ℃, 0.9MPa and 30 minutes; after 30 minutes, the test is finished, and the temperature of the heating surface and the temperature of the non-heating surface can be read through the display screen; obtaining the heat-insulating property of the ceramic fiber composite silicon dioxide aerogel felt heat-insulating sheet. After the test, the heater block rises to initial position or rises to the manual position of setting for automatically, and heat abstractor starts simultaneously, dispels the heat to the sample platform to place next sample fast, simultaneously, the poisonous and harmful flue gas discharge that exhaust apparatus produced in with the heating process makes things convenient for operating personnel to place next sample that awaits measuring.
In addition, the thermal insulation material testing device provided by the embodiment of the application can also test the thermal insulation performance of a sample compressed to a specified thickness or a specified compression percentage. In a specific embodiment, in step 810, the target parameters include a preset time period, a preset temperature and a preset compression amount; or the target parameters comprise a preset time period, a preset temperature and a preset compression percentage.
It can be understood that, in the case where the heating member is brought into contact with the sample stage before the sample is placed, the position of the slider is recorded as the initial position (0). After placing the sample, when the heating component is just in contact with the sample (at this time, the pressure applied to the sample is less than or equal to a preset value, for example, 0.001N), the displacement of the slider is recorded as x, and at this time, the original thickness of the sample without being compressed can be determined as x. After the heating block continues to apply pressure to the sample, the sample is compressed, and the displacement of the slide at this time is noted as y, and the compressed thickness at which the sample is compressed can be determined as y. It can be derived that the amount of compression is the difference between the original thickness and the compressed thickness, and the percentage of compression is the quotient of the compressed thickness and the original thickness. In this way, the amount or percentage of compression of the sample as it is compressed is recorded by the displacement of the slide and, in this case, the thermal insulation properties of the sample are tested.
For example, in practical applications, the device for testing thermal insulation performance provided in the embodiment of the present application can be used to test the thermal insulation performance of a thermal insulation material, and the specific steps are as follows:
(1) setting a target temperature and a target compression percentage for testing by a user through a control panel, and adjusting the beam to a position close to the sample table;
(2) preparing a sample to be measured, heating the part to be measured to a target temperature, placing the sample to be measured on a sample table, controlling the heating part to move downwards to the upper surface of the sample to be measured, and enabling the beam and the heating part to pressurize the sample to be measured to the compression thickness of the sample to be measured through the servo motor, wherein the compression thickness is the product of a target compression percentage and an original thickness, or the compression thickness is the difference between the original thickness and a target compression amount.
(3) After the sample to be detected continues for a preset time period under the conditions of the target temperature and the target compression percentage, respectively acquiring a first temperature of a non-hot surface of the sample to be detected and a second temperature of a heating surface through a first temperature sensor and a second temperature sensor, and displaying the first temperature and the second temperature on a display screen.
Like this, under the condition that uses above-mentioned heat-proof quality testing arrangement to test the heat-proof quality of sample, the sample is placed sample bench back can make the heating block heat to predetermineeing the temperature, and the heating block is along the downward translation of the direction that is close to sample platform, and at this moment, the downward translation of heating block can apply predetermineeing pressure to the sample to make crossbeam and heating block compress the compression thickness to the sample that awaits measuring to the sample, first temperature sensor and second temperature sensor can record the temperature of sample both sides. Therefore, the test of the heat insulation performance of the sample under the high-temperature and high-pressure environment is realized, and the problem that the heat insulation performance of the heat insulation material under the high-temperature and high-pressure condition is difficult to test in a targeted manner in the related art is solved.
In addition, in practical application, the thermal insulation material may expand or decompose under the high-temperature and high-pressure conditions, and the thermal insulation performance testing device provided by the embodiment of the application can be used for testing the thickness variation value of the thermal insulation material under the high-temperature and high-pressure conditions, and the specific steps are as follows:
(1) a user sets a target temperature and a target pressure to be tested through the control panel, and adjusts the cross beam to a position close to the sample table;
(2) preparing a sample to be measured, heating the part to be measured to a target temperature, placing the sample to be measured on a sample table, controlling the heating part to move downwards to the upper surface of the sample to be measured, and pressurizing the sample to be measured to a target pressure by the beam and the heating part through the servo motor.
(3) And after the sample to be detected is continued for a preset time period under the conditions of the target temperature and the target pressure, determining the final thickness of the sample based on the displacement of the sliding block. And taking the difference between the original thickness of the sample and the final thickness of the sample as the thickness change value of the sample under the target temperature and target pressure environment.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A heat-insulating property testing device is characterized by comprising: the device comprises a sample table, a heating part, a first temperature sensor, a second temperature sensor and a pressure sensor;
the arrangement position of the first temperature sensor corresponds to the arrangement position of the second temperature sensor; wherein the first temperature sensor is arranged on the surface of the sample table corresponding to the heating part; the second temperature sensor is arranged on the surface of the heating part corresponding to the sample table;
the heating part is a movable heating part which translates along the direction close to the sample table, so that one side of a sample placed on the sample table is in contact with the first temperature sensor, and the other side of the sample is in contact with the second temperature sensor;
the pressure sensor is arranged on the surface of the sample table, which is far away from the heating part.
2. The thermal insulation performance testing apparatus according to claim 1,
the first temperature sensor is embedded in the sample stage, one surface of the first temperature sensor and the first surface are positioned on the same plane, and the first surface is a surface facing the heating component on the sample stage;
the second temperature sensor is embedded in the heating part, one surface of the second temperature sensor and the second surface of the second temperature sensor are located on the same plane, and the second surface is the surface, facing the sample table, on the heating part.
3. The thermal insulation performance testing apparatus of claim 2, further comprising cross members and columns; the cross beam has an end face and a side face;
the end face of the cross beam is connected with the upright post through a sliding block, and the length direction of the cross beam is vertical to that of the upright post;
the side surface of the beam is connected with the surface, deviating from the sample table, of the heating component, and the beam translates along the length direction of the upright column through a sliding block so as to drive the heating component to translate.
4. The thermal insulation performance testing apparatus of claim 3, further comprising a servo motor,
a screw rod is arranged in the upright post, and the length direction of the screw rod is the same as the length direction of the upright post; the slider cover is established on the lead screw, servo motor with the one end of lead screw is connected.
5. The apparatus of claim 4, further comprising a decelerator, wherein the servo motor is connected to one end of the screw rod through the decelerator.
6. The thermal insulation performance testing device of claim 4, further comprising a timing belt;
the upright posts comprise a first upright post and a second upright post, a first screw rod is arranged in the first upright post, and a second screw rod is arranged in the second upright post; the servo motor comprises a first servo motor and a second servo motor; one end of the first lead screw is connected with the first servo motor, one end of the second lead screw is connected with the second servo motor, and the other end of the first lead screw is connected with the other end of the second lead screw through the synchronous belt.
7. The thermal insulation performance testing apparatus of claim 1, further comprising a base and a heat sink,
the radiator is embedded in the base, and the first temperature sensor, the sample stage, the pressure sensor and the base are sequentially stacked.
8. The thermal insulation performance testing apparatus of claim 1, further comprising a box,
the sample stage, the heating part, the first temperature sensor, the second temperature sensor and the pressure sensor are all arranged in the box body; the surface of the box body facing the heating component is provided with an exhaust hole.
9. The thermal insulation performance testing device of claim 4, further comprising a controller, a display screen, and a control panel;
the display screen is electrically connected with the controller; the control panel is electrically connected with the controller; the first temperature sensor is electrically connected with the controller; the second temperature sensor is electrically connected with the controller; the pressure sensor is electrically connected with the controller; the servo motor is electrically connected with the controller.
10. A method for testing thermal insulation performance, which is applied to the thermal insulation performance testing apparatus according to claim 9, wherein the method comprises:
responding to target parameters input by a user, and keeping the sample in an environment with preset temperature and preset pressure for a preset time period; the target parameters comprise a preset time period, a preset temperature and a preset pressure;
after the sample is kept in the environment with the preset temperature and the preset pressure within a preset time period, simultaneously acquiring a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor, and determining the heat insulation performance of the sample under a target parameter based on the difference between the second temperature and the first temperature.
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