Testing equipment for measuring heat insulation performance of heat insulation material
By designing a combination of heating platform, test sample block and temperature sensing element, the problems of uneven temperature testing and cumbersome operation in existing thermal insulation material testing devices under high temperature environment are solved, and efficient and accurate thermal insulation performance evaluation is achieved.
Patent Information
- Application Number
- CN202422555756.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Existing thermal insulation material testing devices suffer from poor temperature uniformity, low evaluation accuracy, and cumbersome operation in high-temperature environments. Furthermore, the complex structure of these devices results in low testing efficiency.
A testing device was designed, comprising a heating platform, a test sample, a heat-insulating protective cover, and temperature-sensing elements. The heating platform heats the heat-insulating material, the heat-insulating protective cover blocks heat transfer, and the temperature-sensing elements on the inner and outer sides measure the temperature difference, enabling multi-point testing and efficient evaluation.
It enables efficient and accurate evaluation of thermal insulation materials in high-temperature environments, simplifies the operation process, improves testing efficiency and accuracy, and is applicable to various types of thermal insulation materials.
Smart Images
Figure CN223461507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of test equipment, concretely relates to a kind of test equipment for measuring the heat insulation performance of heat insulation material. BACKGROUND
[0002] Heat insulation material is a kind of material that can block heat flow transmission, also known as thermal insulation material. This material can effectively prevent heat transfer between objects, thus playing an important role in various applications. Existing heat insulation materials can be divided into two categories according to their composition and structure: traditional heat insulation materials and new heat insulation materials. Among them, traditional heat insulation materials include asbestos, rock wool, silicate, etc. These materials have a wide range of applications in the industry and construction fields. New heat insulation materials include aerogel blanket, vacuum panel, etc. These materials have more outstanding performance in thermal insulation performance.
[0003] In the industrial field, it is necessary to test the heat insulation performance of heat insulation materials. The existing test method generally determines the heat insulation performance by simulating the temperature difference between the heated surface and the non-heated surface of the heat insulation material under high temperature environment.
[0004] At present, there are various test devices for simulating high temperature environment to test heat insulation performance. Some test devices have simple structure and are easy to operate, but have problems such as poor temperature test uniformity, low accuracy of heat insulation performance evaluation, etc. While some devices have high test precision, small error, good performance evaluation accuracy, etc., but the device structure is relatively complex, the operation is cumbersome, and the test efficiency is low. SUMMARY
[0005] The utility model proposes a kind of test equipment for measuring the heat insulation performance of heat insulation material for the above at least one problem existing in the existing test device, structure is simple, it is convenient to operate, and comparison measurement accuracy is high.
[0006] To solve the above technical problems, the utility model adopts the following technical scheme to realize:
[0007] A kind of test equipment for measuring the heat insulation performance of heat insulation material, comprising:
[0008] Heating table, with the heating panel that releases heat;
[0009] Test sample block, placed on the heating panel, with positionally opposite inner wrapping layer and outer wrapping layer, the inner wrapping layer and outer wrapping layer are used to place the heat insulation material to be tested between them;
[0010] Heat insulation protective cover, placed on the heating panel, and located at the outer periphery of the test sample block, for blocking heat transfer in its covered area to the outer wrapping layer;
[0011] Temperature sensing elements are arranged on the inner and outer sides of the test sample block to sense the temperature difference between the heated surface and the non-heated surface of the thermal insulation material.
[0012] In some embodiments of the present application, the outer contour shape and size of the thermal insulation protective cover are designed to match the outer contour shape and size of the heating panel. Meanwhile, an opening is formed in the middle region of the thermal insulation protective cover, and the shape and size of the opening are designed to match the outer contour shape and size of the test sample block. The test sample block is arranged in the opening region of the thermal insulation protective cover, so that the heat released from the non-test sample coverage region of the heating panel is prevented from being transmitted to the test sample block, thereby affecting the accuracy of the measurement.
[0013] In some embodiments of the present application, an inner high-temperature-resistant layer, an outer high-temperature-resistant layer, and a middle thermal insulation layer are arranged in the thermal insulation protective cover to prevent the heat in the coverage region from being dissipated outward. The inner high-temperature-resistant layer is arranged adjacent to the heating panel of the heating table and can be made of glass fiber cloth with vermiculite coating or other high-temperature-resistant wrapping materials. The middle thermal insulation layer is located outside the inner high-temperature-resistant layer and can be made of ceramic fiber needle punching blanket. The outer high-temperature-resistant layer is located outside the middle thermal insulation layer and can be made of glass fiber cloth with vermiculite coating or other high-temperature-resistant wrapping materials.
[0014] In some embodiments of the present application, the inner high-temperature-resistant layer of the thermal insulation protective cover is directly attached to the heating panel to simplify the structural design.
[0015] In some embodiments of the present application, the inner wrapping layer of the test sample block is arranged adjacent to the heating panel of the heating table, and a plurality of temperature sensing elements are arranged in the region of the heating panel for placing the test sample block or on the outer surface of the inner wrapping layer of the test sample block. The plurality of temperature sensing elements are arranged at intervals to form inner layer temperature sensing elements. Meanwhile, the same number of outer layer temperature sensing elements as the inner layer temperature sensing elements are arranged on the outer surface of the outer wrapping layer of the test sample block in one-to-one correspondence with the arrangement positions of the inner layer temperature sensing elements. Thus, the thermal insulation material can be tested at multiple points. By testing the temperature difference between the heated surface and the non-heated surface of the thermal insulation material at different sampling points, the evaluation of the thermal insulation degree and uniformity of the thermal insulation material can be realized.
[0016] In some embodiments of the present application, the arrangement positions and numbers of the inner layer temperature sensing elements and the outer layer temperature sensing elements can be determined according to the required test point positions and numbers of the thermal insulation material test to adapt to different test requirements of the thermal insulation material.
[0017] In some embodiments of the present application, the inner and outer temperature sensing elements can be arranged in a matrix structure of multiple rows and multiple columns, so as to determine the specific arrangement positions of the inner and outer temperature sensing elements and reduce the alignment error.
[0018] In some embodiments of the present application, the inner wrapping layer of the test sample block can be directly attached to the heating panel of the heating table, so as to simplify the structure design.
[0019] In some embodiments of the present application, the shapes and sizes of the inner and outer wrapping layers of the test sample block can be designed to be adapted to the shapes and sizes of the heat insulation material to be tested, so as to ensure that the temperature difference detected by each pair of temperature sensing elements reflects the temperature difference between the heating surface and the non-heating surface of the heat insulation material.
[0020] In some embodiments of the present application, the inner and outer wrapping layers of the test sample block can be made of glass fiber cloth with vermiculite coating or other high-temperature resistant wrapping materials, so that the test equipment can adapt to various types of heat insulation materials.
[0021] In some embodiments of the present application, the temperature sensing elements can be thermocouple temperature sensors, which can adapt to heating temperatures of 1000℃ or above.
[0022] In some embodiments of the present application, the heating table can be designed as an electric heating table with an electric heating pipe built-in, which generates heat to heat the heating panel.
[0023] In some embodiments of the present application, the heating panel can be a metal panel to accelerate the heat conduction speed and shorten the measurement time. The size of the outer contour of the heating panel is designed to be larger than the size of the heat insulation material to be tested, so as to ensure that the heat insulation material can be heated uniformly as a whole.
[0024] Compared with the prior art, the advantages and positive effects of the present application mainly include:
[0025] 1. The present application uses a heating table to heat and test the heat insulation material, and the heating temperature can be adjusted according to the actual measurement needs, so as to meet the heat insulation performance test needs of various heat insulation materials at different temperatures.
[0026] 2,The utility model discloses a test sample block cooperates the structure design of heat -proof cover, and the heat -proof cover is arranged around the outer periphery of test sample block, so that the heat released by the heating platform in the peripheral area of test sample block can not be transferred to the cold face of test sample block, thereby the accuracy of cold face temperature detection can be guaranteed, and a more accurate cold-hot face temperature difference is obtained. In the process of comparing and measuring different heat insulation materials, the cold-hot face temperature difference can be used to quickly judge the heat insulation performance of these heat insulation materials, the test time is short, the efficiency is high, and the accuracy of the evaluation result is high.
[0027] 3,The utility model discloses a plurality of temperature -sensing elements are arranged on the inner and outer sides of test sample block respectively, thereby the heat insulation material can be tested at multiple points, not only can satisfy the test demand of heat insulation performance, but also can judge whether the different positions of heat insulation material have the same heat insulation performance, and then the precision of heat insulation performance evaluation is improved.
[0028] 4,The utility model discloses a test equipment structure is simple, convenient operation, especially suitable for application in comparison and measurement test, can obtain measurement result quickly, and test efficiency is high, and error is little, and performance evaluation accuracy is good.
[0029] Other features and advantages of the utility model will become more apparent after reading the specific implementation mode of the utility model in combination with the drawings. DRAWINGS
[0030] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.
[0031] Figure 1 It is the overall structure schematic diagram of one embodiment of the test equipment for measuring the heat insulation performance of heat insulation material proposed in the utility model;
[0032] Figure 2 It is the structure exploded view of one embodiment of the test equipment shown in figure Figure 1
[0033] Figure 3 It is the cross section schematic view of one embodiment of the test sample block in Figure 2
[0034] Figure 4 It is the cross section schematic view of one embodiment of the heat -proof cover in Figure 2
[0035] Figure 5 is a structural schematic diagram of an embodiment in which the inner layer temperature sensing element is arranged on the inner wrapping layer of the test sample block;
[0036] Figure 6 is a structural schematic diagram of an embodiment in which the inner layer temperature sensing element is arranged on the heating panel of the heating table;
[0037] In the figure, 100, heating table; 110, base; 120, heating panel; 121, middle region; 122, peripheral region; 200, test sample block; 210, inner wrapping layer; 220, outer wrapping layer; 300, heat insulation protective cover; 310, opening; 320, inner high temperature resistant layer; 330, middle heat insulation layer; 340, outer high temperature resistant layer; 400, temperature sensing element; 410, inner layer temperature sensing element; 420, outer layer temperature sensing element. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0039] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", "middle" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed or operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0040] In the description of the present application, unless otherwise specified, "a plurality of" means two or more.
[0041] As Figure 1 shown, the test equipment of the present embodiment mainly includes a heating table 100, a test sample block 200, a heat insulation protective cover 300, a temperature sensing element 400 and the like, and is mainly used for testing the heat insulation performance of heat insulation materials.
[0042] Among them, the heating table 100 is mainly used for generating and releasing heat, and serves as a bearing table to bear the test sample block 200, the heat insulation protective cover 300 and the temperature sensing element 400.
[0043] As Figure 2As shown, in some embodiments, the heating table 100 can include a base 110 and a heating panel 120. The base 110 can be designed as a hollow structure, and a heating element and a control unit can be arranged inside the base 110. The heating element generates heat and releases it to the outside through the heating panel 120. The control unit controls the start and stop of the heating element and adjusts the heating temperature of the heating element to adapt to the tolerance of different thermal insulation materials to the thermal insulation temperature.
[0044] In some embodiments, the heating table 100 is preferably designed as an electric heating table, which converts electrical energy into heat energy to provide a heat source required for testing. Specifically, an electric heating tube can be arranged in the base 110 of the electric heating table as the heating element to generate heat at a temperature required for testing.
[0045] Preferably, a plurality of electric heating tubes can be arranged uniformly at the bottom of the heating panel 120 to uniformly heat each part of the heating panel 120 and balance the temperature.
[0046] Of course, the heating table can also be designed as other types of heating tables by configuring other types of heating devices other than electric heating tubes, and the present embodiment does not specifically limit this.
[0047] In order to facilitate testing operation, the heating panel 120 can be mounted on the top surface of the base 110, and the outer contour size of the heating panel 120 can be designed to be greater than the size of the thermal insulation material to be tested, so as to ensure that the thermal insulation material can be uniformly heated as a whole during testing.
[0048] In some embodiments, the heating panel 120 can be designed as a rectangular flat plate to facilitate mold opening and reduce costs.
[0049] In order to improve the heat conduction efficiency, the heating panel 120 can be made of metal materials such as cast iron or copper, and the thickness of the heating panel 120 can be set to 30 mm or more to ensure that the overall temperature of the heating panel 120 can be balanced and smoothly raised and lowered.
[0050] In order to improve the accuracy of the test results, the middle region 121 of the heating panel 120 can be arranged as the arrangement area of the test sample 200, and the peripheral region 122 of the middle region 121 can be arranged as the arrangement area of the thermal insulation cover 300.
[0051] In the present embodiment, the test sample 200 is used to wrap the thermal insulation material to be tested and is arranged in the middle region 121 of the heating panel 120, so that the heat released by the heating panel 120 can act on the heating surface of the thermal insulation material to be tested. According to the temperature difference between the heating surface and the non-heating surface of the thermal insulation material to be tested, the thermal insulation performance of the thermal insulation material to be tested can be evaluated.
[0052] As Figure 3As shown, in some embodiments, the test block 200 can include an inner wrapping layer 210 and an outer wrapping layer 220. The inner wrapping layer 210 and the outer wrapping layer 220 are in an upper-lower opposite position relationship, and the inner wrapping layer 210 and the outer wrapping layer 220 are used to place the heat insulation material to be tested.
[0053] When the test block 200 is placed on the heating table 100, the inner wrapping layer 210 of the test block 200 is adjacent to or directly attached to the heating panel 120. At this time, the surface of the heat insulation material adjacent to or directly attached to the inner wrapping layer 210 constitutes the heating surface of the heat insulation material. Conversely, the outer wrapping layer 220 of the test block 200 is away from the heating panel 120 of the heating table 100, and the surface of the heat insulation material adjacent to or directly attached to the outer wrapping layer 220 constitutes the non-heating surface of the heat insulation material.
[0054] In order to make the test equipment of the present embodiment have a wider temperature test range to meet the test requirements of different heat insulation materials, when designing the test block 200, the inner wrapping layer 210 and the outer wrapping layer 220 are preferably made of materials with high temperature resistance. For example, the inner wrapping layer 210 and the outer wrapping layer 220 can be made of glass fiber cloth with vermiculite coating, which can withstand a heating temperature of up to 1000°C. This can meet the test requirements of heat insulation materials with a heat resistance of less than 1000°C.
[0055] In some embodiments, the shape and size of the inner wrapping layer 210 and the outer wrapping layer 220 of the test block 200 are preferably adapted to the shape and size of the heat insulation material to be tested, so as to accurately position the layout position of the temperature sensing element 400. For example, for a heat insulation material with a length and width of 300×300mm, the length and width of the inner wrapping layer 210 and the outer wrapping layer 220 of the test block 200 can also be designed to be 300×300mm. This can meet the wrapping requirements of the heat insulation material, and at the same time, the area involved in the test block 200 can be used to layout the temperature sensing element 400, thereby simplifying the layout operation of the temperature sensing element 400.
[0056] After the test block 200 is laid out in the middle area 121 of the heating panel 120, in order to avoid the heat released by the non-test block 200 covered area on the heating panel 120 from being transmitted to the outer wrapping layer 220 of the test block 200, causing the temperature of the non-heating surface of the heat insulation material to be tested to rise, affecting the accuracy of the test results, the present embodiment designs the heat insulation protective cover 300 to be laid out on the heating panel 120 and located at the outer periphery of the test block 200, so as to block the heat in the area covered by the heat insulation protective cover 300 from being transmitted to the outer wrapping layer 220 of the test block 200, and ensure that the temperature of the non-heating surface of the heat insulation material built-in the test block 200 can reflect the real temperature of its heat insulation performance.
[0057] In order to improve the heat protection effect, in some embodiments, the outer contour shape and size of the heat protection cover 300 can be designed to match the outer contour shape and size of the heating panel 120, and an opening 310 is formed in the middle region of the heat protection cover 300, which is designed to match the outer contour shape and size of the test block 200, so that the test block 200 can be embedded in the opening region of the heat protection cover 300, ensuring that the heat released by the heating panel 120 can only be conducted to the non-heating surface of the heat insulation material through the heating surface of the heat insulation material, and ensuring the accuracy of the temperature difference test.
[0058] For example, if the length and width of the heating panel 120 are 600x600mm, and the length and width of the heat insulation material are 300x300mm, the length and width of the test block 200 can be designed to be 300x300mm, the length and width of the heat protection cover 300 can be designed to be 600x600mm, and the length and width of the opening 310 in the middle of the heat protection cover 300 can be designed to be 300x300mm. The test block 200 is embedded in the opening region of the heat protection cover 300, and the test block 200 and the heat protection cover 300 are used to achieve full coverage of the heating panel 120, as shown in Figure 1 .
[0059] When the length and width of the test block 200 need to be adjusted according to the size of the heat insulation material to be tested, the length and width of the opening 310 in the middle of the heat protection cover 300 also need to be adjusted to match the test block 200 of different sizes.
[0060] In some embodiments, as shown in Figure 4 , the heat protection cover 300 can include at least an inner high-temperature-resistant layer 320, a middle heat insulation layer 330, and an outer high-temperature-resistant layer 340.
[0061] The inner high-temperature-resistant layer 320 is adjacent to the heating panel 120 of the heating table 100 or can be directly attached to the heating panel 120. In some embodiments, the inner high-temperature-resistant layer 320 can be made of glass fiber cloth with vermiculite coating, which can withstand a heating temperature of about 1000℃.
[0062] The middle heat insulation layer 330 is located outside the inner high-temperature-resistant layer 320 and serves as the main heat insulation medium. It can be made of ceramic fiber needle felt, and its thickness can be designed to be more than 25mm to block as much heat as possible from spreading outside the covered area.
[0063] The outer high-temperature-resistant layer 340 is located outside the intermediate thermal insulation layer 330, away from the heating panel 120, and can be flush with or slightly higher than the outer wrapping layer 220 of the test sample 200 in height. In some embodiments, the outer high-temperature-resistant layer 340 can be made of glass fiber cloth with a vermiculite coating to meet the test requirements of high-temperature heating.
[0064] The thermal insulation protective cover 300 is formed by wrapping the ceramic fiber needle blanket with glass fiber cloth with a vermiculite coating. This material combination has the best high-temperature resistance and can withstand a high-temperature environment of 1000°C, so that the test equipment of the present embodiment can test thermal insulation materials in a wider temperature range, not only meeting the thermal insulation performance test requirements of various types of thermal insulation materials, but also making the test equipment of the present embodiment have a wider application range.
[0065] Of course, the inner high-temperature-resistant layer 320 and the outer high-temperature-resistant layer 340 can also be made of other high-temperature-resistant wrapping materials, and the intermediate thermal insulation layer 330 can also be made of other thermal insulation materials. The present embodiment is not limited to the above examples.
[0066] In order to measure the temperature difference between the heating surface and the non-heating surface of the thermal insulation material to be tested, the present embodiment arranges temperature sensing elements 400 on the inner and outer sides of the test sample 200. By detecting the temperature difference between the inner and outer sides of the test sample 200, the thermal insulation performance of the thermal insulation material built-in the test sample 200 can be reflected.
[0067] For the sake of clarity of description, as shown in Figure 2 The temperature sensing element located on the inner side of the test sample 200 can be referred to as an inner layer temperature sensing element 410, which is used to sense the hot surface temperature of the test sample 200, i.e., the temperature of the inner wrapping layer 210 of the test sample 200, which can indirectly reflect the heating surface temperature of the thermal insulation material. Correspondingly, the temperature sensing element located on the outer side of the test sample 200 can be referred to as an outer layer temperature sensing element 420, which is used to sense the cold surface temperature of the test sample 200, i.e., the temperature of the outer wrapping layer 220 of the test sample 200, which can indirectly reflect the non-heating surface temperature of the thermal insulation material.
[0068] In one embodiment, as shown in Figure 5 The inner layer temperature sensing element 410 can be arranged on the outer surface of the inner wrapping layer 210 of the test sample 200, and the outer layer temperature sensing element 420 can be arranged on the outer surface of the outer wrapping layer 220 of the test sample 200, with the arrangement positions of the inner layer temperature sensing element 410 and the outer layer temperature sensing element 420 corresponding to each other.
[0069] In another embodiment, as shown in Figure 6As shown, the inner layer temperature sensing element 410 can be arranged in the middle region 121 of the heating panel 120, and the outer layer temperature sensing element 420 can be arranged on the outer surface of the outer wrapping layer 220 of the test sample 200. The inner layer temperature sensing element 410 and the outer layer temperature sensing element 420 are arranged in a one-to-one corresponding position relationship.
[0070] In order to realize multi-point testing, a plurality of inner layer temperature sensing elements 410 and a plurality of outer layer temperature sensing elements 420 can be arranged in the same number to jointly detect the heating surface temperature and the non-heating surface temperature of the thermal insulation material. The plurality of inner layer temperature sensing elements 410 and the plurality of outer layer temperature sensing elements 420 are arranged in a one-to-one corresponding position relationship. The temperature difference detected by a pair of temperature sensing elements 420 corresponding to the position relationship can reflect the thermal insulation performance of the thermal insulation material at the test point, so that the thermal insulation performance of different parts of the thermal insulation material can be detected and evaluated.
[0071] The specific number and arrangement position of the inner layer temperature sensing element 410 and the outer layer temperature sensing element 420 can be determined according to the number and position of the test points required for the thermal insulation material test, and the embodiment does not make specific limitations.
[0072] Figure 2 、 Figure 5 and Figure 6 It is shown that four temperature sensing elements are arranged on the inner and outer sides of the test sample 200. The inner layer temperature sensing element 410 and the outer layer temperature sensing element 420 can be arranged in a matrix structure of multiple rows and multiple columns, so as to determine the specific arrangement position of the inner layer temperature sensing element 410 and the outer layer temperature sensing element 420, and reduce the deviation of the one-to-one corresponding pair of temperature sensing elements in the arrangement position.
[0073] In some embodiments, the temperature sensing element 400 can be a thermocouple temperature sensor, such as a K-type thermocouple temperature sensor with a temperature measurement range of -200°C to 1300°C, to adapt to a heating temperature of 1000°C or above.
[0074] The control unit in the heating table 100 collects the temperature detection signal output by the temperature sensing element 400, and after analog-to-digital conversion, calculates the temperature difference of each test point, which is used for comprehensive evaluation of the thermal insulation performance of the thermal insulation material.
[0075] Industrial applicability
[0076] When using the test equipment of the embodiment to test the thermal insulation performance of different thermal insulation materials, the thermal insulation material can be first placed between the inner wrapping layer 210 and the outer wrapping layer 220 of the test sample 200; then, the test sample 200 is placed in the middle region 121 of the heating panel 120.
[0077] The heat shield cover 300 is placed on the peripheral area 122 of the heating panel 120, and the sample 200 to be tested is exposed from the middle opening 310 of the heat shield cover 300.
[0078] The heating platform 100 is started, and the heating panel 120 is heated by the electric heating tube in the heating platform 100. When the temperature of the heating panel 120 rises to a specified temperature (the temperature change of the heating panel 120 can be reflected by reading the temperature value detected by the inner temperature sensing element 410), the temperature is maintained for about one hour, and then the temperature difference of all test points is recorded.
[0079] By comparison, the heat insulation performance of different heat insulation materials in this test can be relatively evaluated.
[0080] Of course, the test equipment of the embodiment can be applied to absolute measurement in addition to comparative measurement, and can provide reference data for the heat insulation performance evaluation of heat insulation materials in absolute measurement tests.
[0081] The above embodiment is only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiment, for those skilled in the art, the technical solutions recorded in the foregoing embodiment can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.
[0082] As far as possible, various schemes or features described and shown in the specification can be applied alone, and these individual schemes or features can be the subject of a divisional application.
Claims
1. A test apparatus for measuring the thermal insulation performance of a thermal insulation material, characterized in that, The test device comprises: a heating platform with a heating panel that releases heat; a test block placed on the heating panel, having an inner wrapping layer and an outer wrapping layer opposite to each other, and a space between the inner wrapping layer and the outer wrapping layer for placing the heat insulation material to be tested; a heat insulation protective cover placed on the heating panel and located at the outer periphery of the test block, for blocking the heat transfer in the covered area of the test block to the outer wrapping layer; a plurality of temperature sensing elements distributed on the inner and outer sides of the test block, for sensing the temperature difference between the heating surface and the non-heating surface of the heat insulation material to be tested.
2. The test device for measuring the heat insulation performance of heat insulation material according to claim 1, wherein: the outer contour shape and size of the heat insulation protective cover are matched with the outer contour shape and size of the heating panel; an opening is formed in the middle area of the heat insulation protective cover, and the shape and size of the opening are matched with the outer contour shape and size of the test block; the test block is arranged in the opening area of the heat insulation protective cover.
3. The test apparatus for measuring the thermal insulation performance of a thermal insulation material according to claim 2, characterized in that, The heat insulation protective cover comprises: an inner high-temperature resistant layer adjacent to the heating panel of the heating platform, made of glass fiber cloth with vermiculite coating or other high-temperature resistant wrapping materials; a middle heat insulation layer located outside the inner high-temperature resistant layer, made of ceramic fiber needle punching blanket; an outer high-temperature resistant layer located outside the middle heat insulation layer, made of glass fiber cloth with vermiculite coating or other high-temperature resistant wrapping materials.
4. The test apparatus for measuring the thermal insulation performance of a thermal insulation material according to claim 3, characterized in that, The inner high-temperature resistant layer of the heat insulation protective cover is attached to the heating panel.
5. The test device for measuring the heat insulation performance of heat insulation material according to any one of claims 1 to 4, wherein: the inner wrapping layer of the test block is adjacent to the heating panel of the heating platform; a plurality of temperature sensing elements are arranged in the area of the heating panel for arranging the test block or on the outer surface of the inner wrapping layer of the test block, and the plurality of temperature sensing elements are distributed at intervals to form inner layer temperature sensing elements; an equal number of outer layer temperature sensing elements are arranged on the outer surface of the outer wrapping layer of the test block, and the arrangement positions of the outer layer temperature sensing elements correspond one by one to the arrangement positions of the inner layer temperature sensing elements.
6. The test apparatus for measuring the thermal insulation performance of a thermal insulation material according to claim 5, characterized in that, The arrangement positions and number of the inner layer temperature sensing elements and the outer layer temperature sensing elements are determined according to the required test point positions and number of the heat insulation material test.
7. The test apparatus for measuring the thermal insulation performance of a thermal insulation material according to claim 5, characterized in that, The inner layer temperature sensing elements and the outer layer temperature sensing elements form a matrix arrangement structure of multiple rows and multiple columns.
8. The test device for measuring the heat insulation performance of heat insulation material according to claim 5, wherein: the inner wrapping layer of the test block is attached to the heating panel of the heating platform; the shape and size of the inner wrapping layer and the outer wrapping layer of the test block are matched with the shape and size of the heat insulation material to be tested.
9. The test device for measuring the heat insulation performance of heat insulation material according to claim 5, wherein: the inner wrapping layer and the outer wrapping layer of the test block are made of glass fiber cloth with vermiculite coating or other high-temperature resistant wrapping materials; the temperature sensing elements are thermocouple temperature sensors.
10. The test device for measuring the thermal insulation performance of thermal insulation material according to any one of claims 1 to 4, characterized in that, the heating table is an electric heating table, and an electric heating pipe is arranged in the heating table to heat the heating panel; the heating panel is a metal panel, and the size of the outer contour of the metal panel is greater than the size of the thermal insulation material to be measured.