CN114563445A - Aerogel thermal insulation thick coating thermal insulation performance test device and method - Google Patents
Aerogel thermal insulation thick coating thermal insulation performance test device and method Download PDFInfo
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- CN114563445A CN114563445A CN202210322333.0A CN202210322333A CN114563445A CN 114563445 A CN114563445 A CN 114563445A CN 202210322333 A CN202210322333 A CN 202210322333A CN 114563445 A CN114563445 A CN 114563445A
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Abstract
The invention provides a thermal insulation performance test device and a method for an aerogel thermal insulation thick coating, which can simulate a direct sunlight environment, have more real and accurate test data and reduce the simulation cost, and comprise the following steps: the test box comprises a test box body and a test box cover, wherein an electric floor heater is arranged at the bottom of an inner cavity of the test box body, a floor is arranged on the upper layer of the electric floor heater, moving members are arranged on the floor, and a supporting base is assembled on the moving members; the indoor temperature testing assembly and the outdoor temperature testing assembly are arranged in the testing box body, the indoor temperature testing assembly is assembled on the supporting base, the outdoor temperature testing assembly is assembled on the side wall of one testing box body, the testing box body further comprises an intelligent temperature field tester and a heat source simulation assembly, the heat source simulation assembly is clamped on the outer wall of the testing box body, and a connecting wire for connecting the heat source simulation assembly and the testing box body is 300 mm.
Description
Technical Field
The invention relates to the field of coating simulation tests, in particular to a device and a method for testing the heat preservation performance of an aerogel heat preservation and insulation thick coating.
Background
With the rapid development of human society, energy problems are increasingly prominent. The Ministry of building science and technology has a name that the proportion of building energy consumption in China can reach 35 percent along with the rapid development of the urbanization process. Building energy consumption influences effective utilization of national resources and sustainable development of economy, and in view of the fact that building energy conservation is a main measure for reducing building energy consumption, the government of China issues a plurality of legal rules related to building energy conservation. In the existing coating thermal insulation performance test process, a temperature simulation test is carried out by adopting a separate laboratory, so that the occupied space is large, and the simulation cost is high.
Disclosure of Invention
The invention aims to provide a device and a method for testing the heat preservation performance of an aerogel heat preservation and insulation thick coating, which can reduce the influence of external environmental factors, simulate a direct sunlight environment, ensure that test data are more real and accurate and reduce simulation cost.
The embodiment of the invention is realized by the following steps:
the utility model provides an aerogel keeps warm and insulates against heat thick type coating thermal insulation performance test device, this thermal insulation performance test device includes: the floor heating device comprises a test box body and a test box cover, wherein the bottom of an inner cavity of the test box body is provided with an electric floor heating, a floor is arranged on the upper layer of the electric floor heating, a transverse lead screw is arranged on the floor, a first lead screw motor is arranged at one end of the transverse lead screw, a vertical lead screw is erected on the transverse lead screw, a second lead screw motor is arranged at one end of the vertical lead screw, and a support base is assembled on the vertical lead screw; the indoor temperature testing assembly and the outdoor temperature testing assembly are arranged in the testing box body, the indoor temperature testing assembly is assembled on the supporting base, the outdoor temperature testing assembly is assembled on the side wall of one testing box body, the testing box body further comprises an intelligent temperature field tester and a heat source simulation assembly, the intelligent temperature field tester is electrically connected with the indoor temperature testing assembly, the outdoor temperature testing assembly and the heat source simulation assembly respectively, the heat source simulation assembly is clamped on the outer wall of the testing box body, and a connecting line for connecting the heat source simulation assembly and the testing box body is 300 mm; the test box cover is hinged to one side of the top of the test box body, a hollow glass observation window is arranged at the top of the test box cover, and a cement calcium silicate board is adopted as the whole test box cover.
In a preferred embodiment of the present invention, the indoor temperature testing assembly includes: the vertical supporting rod is detachably connected with the supporting base; the 3 first temperature sensors are distributed on the vertical supporting rods, the first temperature sensor positioned at the uppermost position in the 3 first temperature sensors is 150mm away from the top surface of the test box body, the first temperature sensor positioned in the middle is positioned at the middle waist line position of the test box body, and the first temperature sensor positioned at the lowermost position is 150mm away from the floor; the 3 first temperature sensors are connected through first wires; the two ends of the spring connecting wire are respectively connected with the first lead and the intelligent temperature field tester.
In a preferred embodiment of the present invention, the outdoor temperature testing assembly includes: 3 indoor outer temperature acquisition of group, indoor outer temperature acquisition group installs on the lateral wall of proof box, and 3 positions that group indoor outer temperature acquisition of group matches with the position of indoor temperature test component.
In a preferred embodiment of the present invention, the heat source simulation module includes: the infrared lamp comprises a movable base, 3 infrared lamps and a third wire, wherein a 7-shaped vertical plate is arranged on the movable base, and a movable roller is arranged at the bottom of the movable base; the infrared lamps are vertically distributed on the vertical plate and connected through a second lead, and the second lead extends to the movable base; the third wire is connected with intelligent temperature field tester and second wire, and the distance of third wire from experimental box to removal base is 300 mm.
In a preferred embodiment of the present invention, the outer wall of the test box is provided with a clamping member for clamping the vertical plate.
In a preferred embodiment of the present invention, the 7-shaped vertical plate includes a horizontal clamping block, and two sides of the horizontal clamping block are provided with spring pieces.
In a preferred embodiment of the present invention, the clip member includes: the lamp bulb fixing device comprises a first transverse groove, 3 bulb fixing circular grooves and a second transverse groove, wherein a transverse clamping block is inserted into the first transverse groove, and openings for fixing clamp spring elastic sheets are formed in two sides of the first transverse groove; the position of the bulb fixing circular groove is matched with the position of the infrared lamp, the inner wall of the bulb fixing circular groove is provided with a foam pearl cotton pad, and a cavity matched with the infrared lamp in shape is arranged in the foam pearl cotton pad; the second transverse groove is arranged below the fixed circular groove of the bulb, and the movable base is clamped into the second transverse groove.
A method for testing the heat preservation performance of a gel heat preservation and insulation thick coating comprises the following steps:
preparation of the test: the following coatings are sequentially built on the outer wall and the roof of one heat-insulating performance test device from outside to inside by adopting 3 heat-insulating performance test devices: the test device comprises an extruded sheet heat-insulation board with the thickness of 35mm, anti-crack mortar with the thickness of 5mm, putty for two times, sealing primer and common light gray building coating for two times, wherein the test device is used as an extruded sheet heat-insulation system; the following coatings are sequentially built on the outer wall and the roof of the second thermal insulation performance test device from inside to outside: putty, seal primer, 2mm aerogel thermal insulation thick type intermediate coat and aerogel thermal insulation paint finish paint are used twice, and the test device is used as an aerogel thermal insulation system; the third heat preservation performance test device does not adopt any heat preservation and heat insulation treatment mode, is a heat preservation system-free device, and directly adopts two times of putty, seal primer and two times of common building coating on the outer wall;
acquiring basic data: detecting the ambient temperature, and acquiring data according to the average values of the wall, the indoor and the outdoor and the average value of the indoor center; detecting and recording voltage, detecting resistance value of outdoor heat source, and recording the bottom number of the watt-hour meter;
detecting data acquisition, and starting an intelligent temperature measuring field: when the ambient temperature is higher than 20 ℃, moving the detection device to a direct solar radiation place, detecting the temperature difference inside and outside the wall body, and the temperature difference between the indoor center and the outdoor to obtain the condition of indoor temperature difference change; when the outdoor environment temperature is less than or equal to 20 ℃, moving the detection device indoors, adopting an air conditioner or other auxiliary heating to enable the detection environment temperature to reach more than 20 ℃, arranging an infrared heat source which is 300mm away from the box body, adopting the same infrared heat source to heat the outer wall at the same position and the same distance to enable the maximum temperature of the surface of the outer wall to rise to 68-72 ℃;
outputting detection data in real time, recording watt-hour meter data, and outputting intelligent temperature measuring field data: a KB-ZJ90 type intelligent temperature field tester is adopted, and the change condition of indoor and outdoor temperatures is tested by a thermocouple, so that an automatic recorder records the change condition once every 1 minute; the first group, the second group and the third group of simulation detection devices are respectively provided with 9 temperature measuring points which are respectively arranged at the middle parts of the inner side and the outer side and the indoor middle part of the same outer wall and are respectively arranged at the middle position and the position 150mm away from the top plate and the ground.
In a preferred embodiment of the present invention, the extruded sheet insulation system has a floor heating resistance value of 475 Ω, the aerogel insulation coating system has a floor heating resistance value of 465 Ω, and the non-insulation system has a floor heating resistance value of 460 Ω.
In a preferred embodiment of the present invention, the detection time of the test method is: each group is 5 times/day, the duration of each heating on the outer side of the outer wall is not less than 8 hours, the frequency of the temperature measuring field is recorded for 1 minute, the recording time is prolonged to 2 hours after the heating is stopped, the regression condition of the temperature reduction after the heating is stopped is recorded, and the three groups are tested simultaneously.
The embodiment of the invention has the beneficial effects that: the inner bottom of the test box body of the heat preservation performance test device in the embodiment is provided with an electric floor heater which is used for simulating an indoor environment of more than 20 ℃ when the temperature is insufficient; a transverse screw rod is arranged on the upper layer of the floor of the electric heating floor heating system, a first screw rod motor controls the transverse screw rod to rotate, so that connecting seats at two ends of a vertical screw rod arranged on the transverse screw rod can drive the vertical screw rod to move transversely, and a supporting base on the vertical screw rod can move at any position on the ground in the same way; the indoor temperature testing component is used for monitoring an indoor temperature value, the outdoor temperature testing component is used for measuring a temperature difference value of the outer wall, the heat source simulating component is used for simulating the situation of direct solar radiation, data are collected, processed and output through the intelligent temperature field tester, and the result is more accurate;
the outer sides of the three test devices are respectively provided with an extruded sheet heat insulation system, an aerogel heat insulation thick coating system and no heat insulation system, the same electric heating floor heating devices are installed on the indoor ground, and three detection environments with the same conditions are constructed; the three test devices are heated by floor heating, the temperature difference inside and outside the wall body at the same position is detected, the temperature difference between the indoor center and the outdoor is obtained, the condition of indoor temperature change is obtained, and corresponding energy consumption is calculated through comparison of consumed electric quantity, so that thermal engineering detection data of the aerogel heat-insulation thick coating are obtained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the internal structure of a test apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a testing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the external structure of the testing device according to the embodiment of the present invention;
icon: 100-a test box body; 200-test box cover; 110-electric floor heating; 120-floor; 131-a transverse screw rod; 132-a first lead screw motor; 133-vertical lead screw; 134-a second lead screw motor; 135-a support base; 140-indoor temperature test assembly; 150-outdoor temperature test assembly; 160-intelligent temperature field tester; 170-a heat source simulation component; 210-hollow glass viewing windows; 141-vertical support bars; 142-a first temperature sensor; 143-spring connection line; 151-outdoor temperature sensor; 152-an indoor temperature sensor; 171-a mobile base; 172-infrared lamps; 173-third conductor; 174-moving the roller; 175-vertical plate; 176-a transverse clamping block; 181 — a first transverse groove; 182-bulb fixing circular groove; 183-second transverse groove; 184-foam pearl cotton pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
First embodiment
Referring to fig. 1-3, the present embodiment provides an aerogel thermal insulation thick coating thermal insulation performance test apparatus, which includes: the test box body 100 and the test box cover 200 are arranged, the bottom of an inner cavity of the test box body 100 is provided with an electric floor heating 110, the upper layer of the electric floor heating 110 is provided with a floor 120, the floor 120 is provided with a moving member, the moving member comprises a transverse screw rod 131, one end of the transverse screw rod 131 is provided with a first screw rod motor 132, a vertical screw rod 133 is erected on the transverse screw rod 131, one end of the vertical screw rod 133 is provided with a second screw rod motor 134, and a support base 135 is assembled on the vertical screw rod 133; the indoor temperature testing assembly 140 and the outdoor temperature testing assembly 150 are arranged in the testing box body 100, the indoor temperature testing assembly 140 is assembled on the supporting base 135, the outdoor temperature testing assembly 150 is assembled on the side wall of one side of the testing box body 100, the testing box body 100 further comprises an intelligent temperature field tester 160 and a heat source simulation assembly 170, the intelligent temperature field tester 160 is electrically connected with the indoor temperature testing assembly 140, the outdoor temperature testing assembly 150 and the heat source simulation assembly 170 respectively, the heat source simulation assembly 170 is clamped on the outer wall of the testing box body 100, and a connecting line between the heat source simulation assembly 170 and the testing box body 100 is 300 mm.
An electric floor heating 110 is arranged at the bottom in a test box body 100 of the heat preservation performance test device in the embodiment and is used for simulating an indoor environment above 20 ℃ when the temperature is insufficient; a transverse screw rod 131 is arranged on the upper layer of the floor 120 of the electric floor heating 110, and a first screw rod motor 132 controls the transverse screw rod 131 to rotate, so that connecting seats at two ends of a vertical screw rod 133 arranged on the transverse screw rod 131 can drive the vertical screw rod 133 to transversely move, and similarly, a supporting base 135 arranged on the vertical screw rod 133 can move at any position on the ground; indoor temperature test component 140 for monitor indoor temperature value, outdoor temperature test component 150 is used for measuring the temperature difference of outer wall, and heat source simulation component 170 is used for simulating the condition of direct solar radiation, gathers, handles and output data through intelligent temperature field tester 160, and the result is more accurate.
The test box cover 200 is hinged to one side of the top of the test box body 100, the test box body 100 is convenient to open, a hollow glass observation window 210 is arranged at the top of the test box cover 200 and used for conveniently observing the internal conditions, and the whole test box cover 200 is made of a cement calcium silicate plate.
More specifically, the indoor temperature testing assembly 140 in this embodiment includes: the vertical support rod 141, the 3 first temperature sensors 142 and the spring connecting line 143, the vertical support rod 141 and the support base 135 are detachably connected, and in this embodiment, the most basic simple plug-and-pull mode is selected for connection; the 3 first temperature sensors 142 are distributed on the vertical supporting rod 141, the first temperature sensor 142 positioned at the uppermost position in the 3 first temperature sensors 142 is 150mm away from the top surface of the test box body 100, the first temperature sensor 142 positioned in the middle is positioned at the middle waist line position of the test box body 100, and the first temperature sensor 142 positioned at the lowermost position is 150mm away from the floor; the 3 first temperature sensors 142 are connected by first wires; first wire and intelligent temperature field tester 160 are connected respectively to the both ends of spring connecting wire 143, connect through spring connecting wire 143, and the collection arrangement of the pencil of being convenient for and can be applicable to indoor temperature test component 140's removal.
The outdoor temperature test assembly 150 includes: the 3 indoor outer temperature acquisition groups of group, indoor outer temperature acquisition group install on the lateral wall of proof box, and 3 indoor outer temperature acquisition groups's of group position and indoor temperature test component 140's position match. The indoor and outdoor temperature acquisition group comprises an outdoor temperature sensor 151 and an indoor temperature sensor 152, and the positions of the two sensors are matched.
The heat source simulation module 170 includes: the heat source simulation device comprises a movable base 171, 3 infrared lamps 172 and a third lead 173, wherein a 7-shaped vertical plate 175 is arranged on the movable base 171, a movable roller 174 is arranged at the bottom of the movable base 171, and is convenient for the heat source simulation assembly 170 to move, the movable roller 174 is a roller with a lock, and when the movable base moves to 300mm, the roller is locked; the infrared lamps 172 are vertically distributed on the vertical plate 175, and the infrared lamps 172 are connected by a second wire extending to the moving base 171; the third wire 173 is connected to the intelligent thermal field tester 160 and the second wire, and the distance from the test chamber 100 to the movable base 171 is 300mm for the third wire 173, so that the heat source simulation assembly 170 defines the distance of 300mm without measuring the interval.
The heat source simulation assembly 170 in this embodiment is clamped to the test cassette 100 as follows: the outer wall of experimental box 100 is provided with the joint spare of the vertical board 175 of joint, and the vertical board 175 of 7 fonts includes horizontal joint piece 176, and the both sides of horizontal joint piece 176 are provided with jump ring shell fragment 177, and the joint spare includes: the lamp bulb fixing structure comprises a first transverse groove 181, 3 bulb fixing circular grooves 182 and a second transverse groove 183, wherein a transverse clamping block 176 is inserted into the first transverse groove 181, and openings for fixing clamp spring elastic sheets 177 are formed in two sides of the first transverse groove 181; the position of the bulb fixing circular groove 182 is matched with the position of the infrared lamp 172, the inner wall of the bulb fixing circular groove 182 is provided with a foam pearl cotton pad 184, and a cavity matched with the shape of the infrared lamp 172 is arranged in the foam pearl cotton pad 184; the second lateral groove 183 is disposed below the bulb fixing circular groove 182, and the moving base 171 is engaged in the second lateral groove 183. Simple to use high-efficient, when needs use, press jump ring shell fragment 177, take out the vertical board 175 of 7 types and can use heat source simulation subassembly 170, when need not use, with the horizontal segment of the vertical board 175 of 7 types, bulb and removal base 171 card go into corresponding position can.
A method for testing the heat preservation performance of a gel heat preservation and insulation thick coating comprises the following steps:
preparation of the test: the following coatings are sequentially built on the outer wall and the roof of one heat-insulating performance test device from outside to inside by adopting 3 heat-insulating performance test devices: the test device is used as an extruded sheet heat insulation system and executes the relevant requirements of 'external wall external heat insulation engineering technical standard' JGJ 144-2019; the following coatings are sequentially built on the outer wall and the roof of the second heat-insulating property test device from inside to outside: the test device is used as an aerogel heat preservation system to execute the application technical specification of GB/T25261-2018 reflective heat insulation coating for buildings, JC/T235-2014 reflective heat insulation coating for buildings, T/CECS835-2021 aerogel heat preservation heat insulation thick coating energy-saving system and the requirements of T/CECS10126-2021 aerogel heat preservation heat insulation thick coating energy-saving system; the third heat preservation performance test device does not adopt any heat preservation and heat insulation treatment mode, is a heat preservation system-free device, and directly adopts two times of putty, seal primer and two times of common building coating on the outer wall;
acquiring basic data: detecting the ambient temperature, and acquiring data according to the average values of the wall, the indoor and the outdoor points and the average value of the indoor center; detecting and recording voltage, detecting resistance value of outdoor heat source, and recording the bottom number of the watt-hour meter;
detecting data acquisition, and starting an intelligent temperature measuring field: when the environmental temperature is higher than 20 ℃, moving the detection device to a direct solar radiation place, detecting the temperature difference inside and outside the wall body and the temperature difference between the indoor center and the outdoor to obtain the condition of indoor temperature difference change; when the outdoor environment temperature is less than or equal to 20 ℃, moving the detection device to the indoor, adopting an air conditioner or other auxiliary heating to enable the detection environment temperature to reach more than 20 ℃, arranging an infrared heat source which is 300mm away from the box body, adopting the same infrared heat source to heat the outer wall at the same distance, and enabling the maximum temperature of the surface temperature of the outer wall to rise to 68-72 ℃;
outputting detection data in real time, recording watt-hour meter data, and outputting intelligent temperature measuring field data: a KB-ZJ90 type intelligent temperature field tester is adopted, and the change condition of indoor and outdoor temperatures is tested by a thermocouple, so that an automatic recorder records the change condition once every 1 minute; the first group, the second group and the third group of simulation detection devices are respectively provided with 9 temperature measuring points which are respectively arranged at the middle parts of the inner side and the outer side and the indoor middle part of the same outer wall and are respectively arranged at the middle position and the position 150mm away from the top plate and the ground.
An extruded sheet heat insulation system, an aerogel heat insulation thick coating system and no heat insulation system are respectively arranged at the outer sides of the three test devices, the same electric heating floor heating devices are installed on the indoor ground, and three detection environments with the same conditions are constructed; the three test devices are heated by floor heating, the temperature difference inside and outside the wall body at the same position is detected, the temperature difference between the indoor center and the outdoor is obtained, the condition of indoor temperature change is obtained, and corresponding energy consumption is calculated through comparison of consumed electric quantity, so that thermal engineering detection data of the aerogel heat-insulation thick coating are obtained.
The peripheral dimension of the test device is 1000 multiplied by 1220 multiplied by lOOOmm, the top of the test device is provided with a 5+9 ten 5 hollow glass observation window (300 multiplied by lOOOmm), a 40mm multiplied by 40mm wood keel is used as a framework, and the lOmm cement calcium silicate board is covered.
The same domestic electric heating type ground heating of all installing of this embodiment is provided the heat source for indoor at three group simulation house subaerial, wherein, extrusion plate heat preservation system ground heating resistance value 475 omega, aerogel heat preservation thermal-insulated coating system ground heating resistance value 465 omega, no heat preservation system ground heating resistance value 460 omega.
The test method has the following detection time: each group is 5 times/day, the duration of each heating on the outer side of the outer wall is not less than 8 hours, the frequency of the temperature measuring field is recorded for 1 minute, the recording time is prolonged to 2 hours after the heating is stopped, the regression condition of the temperature reduction after the heating is stopped is recorded, and the three groups are tested simultaneously.
According to the data automatically recorded by the intelligent temperature field tester, according to the average value of 3 points (two points without a heat preservation system) indoors and outdoors of the wall body and the average value of an indoor center, the data is extracted from indoor once data from 5 days to start heating, and the data is extracted every 30 minutes to carry out thermotechnical data comparison.
The intelligent temperature field tester outputs a result: under the same condition, the wall body heat preservation effect of the aerogel heat preservation and insulation coating system is superior to that of an extruded sheet heat preservation system, and the wall body heat preservation effect of the extruded sheet heat preservation system is superior to that of a non-heat preservation system. Meanwhile, the overall heat preservation effect of the aerogel heat preservation and insulation coating system is superior to that of an extruded sheet heat preservation system, and the overall heat preservation effect of the extruded sheet heat preservation system is superior to that of a non-heat preservation system.
In conclusion, the heat preservation performance test device in the technical scheme can simulate the direct solar radiation effect, does not need to be influenced by the external environment, and carries out intelligent test operation on the internal and external temperature and the indoor temperature of the wall, and is simple to operate and high in test efficiency.
This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It should be understood that the embodiments described in this specification can be implemented in many alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. It will be appreciated by persons skilled in the art that a plurality of features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to form embodiments which are not explicitly illustrated or described. The described combination of features provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present invention may be used as desired for particular applications or implementations.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an aerogel keeps warm and insulates against heat thick type coating thermal insulation performance test device which characterized in that, thermal insulation performance test device includes:
the floor heating device comprises a test box body, wherein an electric floor heating is arranged at the bottom of an inner cavity of the test box body, a floor is arranged on the upper layer of the electric floor heating, a transverse lead screw is arranged on the floor, a first lead screw motor is arranged at one end of the transverse lead screw, a vertical lead screw is erected on the transverse lead screw, a second lead screw motor is arranged at one end of the vertical lead screw, and a supporting base is assembled on the vertical lead screw; the testing box body is internally provided with an indoor temperature testing assembly and an outdoor temperature testing assembly, the indoor temperature testing assembly is assembled on the supporting base, the outdoor temperature testing assembly is assembled on one side wall of the testing box body, the testing box body further comprises an intelligent temperature field tester and a heat source simulation assembly, the intelligent temperature field tester is respectively and electrically connected with the indoor temperature testing assembly, the outdoor temperature testing assembly and the heat source simulation assembly, the heat source simulation assembly is clamped on the outer wall of the testing box body, and a connecting line for connecting the heat source simulation assembly and the testing box body is 300 mm;
the test box cover is hinged to one side of the top of the test box body, a hollow glass observation window is arranged at the top of the test box cover, and a cement calcium silicate board is adopted as the whole test box cover.
2. The aerogel thermal insulation thick coating thermal insulation performance test device according to claim 1, wherein the indoor temperature test assembly comprises:
the vertical supporting rod is detachably connected with the supporting base;
the device comprises 3 first temperature sensors, wherein the 3 first temperature sensors are distributed on the vertical supporting rod, the first temperature sensor positioned at the uppermost position in the 3 first temperature sensors is 150mm away from the top surface of the test box body, the first temperature sensor positioned in the middle is positioned at the middle waist line position of the test box body, and the first temperature sensor positioned at the lowermost position is 150mm away from the floor; the 3 first temperature sensors are connected through first wires;
and two ends of the spring connecting wire are respectively connected with the first lead and the intelligent thermal field tester.
3. The aerogel thermal insulation thick coating thermal insulation performance test device according to claim 1, wherein the outdoor temperature test assembly comprises:
and 3 groups of indoor and outdoor temperature acquisition groups are arranged on the side wall of the box body of the test box, and the positions of the 3 groups of indoor and outdoor temperature acquisition groups are matched with the position of the indoor temperature testing assembly.
4. The aerogel thermal insulation thick coating thermal insulation performance test device according to claim 1, wherein the heat source simulation assembly comprises:
the movable base is provided with a 7-shaped vertical plate, and the bottom of the movable base is provided with a movable roller;
the infrared lamps are vertically distributed on the vertical plate and connected through a second lead, and the second lead extends to the moving base;
and the third lead is connected with the intelligent temperature field tester and the second lead, and the distance from the test box body to the mobile base is 300 mm.
5. The aerogel heat preservation and insulation thick type coating heat preservation performance test device of claim 4, wherein the outer wall of the test box body is provided with a clamping piece for clamping the vertical plate.
6. The aerogel heat preservation and insulation thick coating heat preservation performance test device of claim 5, wherein the 7-shaped vertical plate comprises a transverse clamping block, and clamp spring pieces are arranged on two sides of the transverse clamping block.
7. The aerogel thermal insulation thick coating thermal insulation performance test device according to claim 6, wherein the clamping piece comprises:
the transverse clamping block is inserted into the first transverse groove, and openings for fixing the clamp spring and the elastic sheet are formed in two sides of the first transverse groove;
the infrared lamp is characterized by comprising 3 bulb fixing circular grooves, wherein the positions of the bulb fixing circular grooves are matched with the positions of the infrared lamps, foam pearl cotton pads are arranged on the inner walls of the bulb fixing circular grooves, and cavities matched with the infrared lamps in shape are arranged in the foam pearl cotton pads;
the second transverse groove is arranged below the bulb fixing circular groove, and the movable base is clamped in the second transverse groove.
8. A heat preservation performance test method of a gel heat preservation and insulation thick coating is characterized by comprising the heat preservation performance test device of any one of claims 1 to 7, and the test method comprises the following steps: preparation of the test: adopting 3 the heat preservation performance test device, one the outer wall and the roofing of heat preservation performance test device establish following coating from outside to inside in proper order: the test device comprises an extruded sheet heat-insulation board with the thickness of 35mm, anti-crack mortar with the thickness of 5mm, putty for two times, sealing primer and a common light gray building coating for two times, wherein the test device is used as an extruded sheet heat-insulation system; the following coatings are sequentially built on the outer wall and the roof of the second thermal insulation performance test device from inside to outside: putty, seal primer, 2mm aerogel thermal insulation thick type intermediate coat and aerogel thermal insulation paint finish paint are used twice, and the test device is used as an aerogel thermal insulation system; the third heat preservation performance test device does not adopt any heat preservation and heat insulation treatment mode, is a heat preservation system-free device, and directly adopts two times of putty, seal primer and two times of common building coating on the outer wall;
acquiring basic data: detecting the ambient temperature, and acquiring data according to the average values of the wall, the indoor and the outdoor and the average value of the indoor center; detecting and recording voltage, detecting resistance value of outdoor heat source, and recording the bottom number of the watt-hour meter;
detecting data acquisition, and starting an intelligent temperature measuring field: when the ambient temperature is higher than 20 ℃, moving the detection device to a direct solar radiation place, detecting the temperature difference between the inside and the outside of the cavity, and the temperature difference between the indoor center and the outdoor to obtain the indoor temperature difference change condition; when the outdoor environment temperature is less than or equal to 20 ℃, moving the detection device to the indoor, adopting an air conditioner or other auxiliary heating to enable the detection environment temperature to reach more than 20 ℃, arranging an infrared heat source which is 300mm away from the box body, adopting the same infrared heat source to heat the outer wall at the same distance, and enabling the maximum temperature of the surface temperature of the outer wall to rise to 68-72 ℃;
outputting detection data in real time, recording watt-hour meter data, and outputting intelligent temperature measuring field data: a KB-ZJ90 type intelligent temperature field tester is adopted, and the change condition of indoor and outdoor temperatures is tested by a thermocouple, so that an automatic recorder records the change condition once every 1 minute; the first group, the second group and the third group of simulation detection devices are respectively provided with 9 temperature measuring points which are respectively arranged at the middle parts of the inner side and the outer side and the indoor middle part of the same outer wall and are respectively arranged at the middle position and the position 150mm away from the top plate and the ground.
9. The gel heat preservation and insulation thick coating heat preservation performance test method according to claim 8, characterized in that the resistance value of a floor heating system of the extruded sheet heat preservation system is 475 Ω, the resistance value of a floor heating system of the aerogel heat preservation and insulation coating system is 465 Ω, and the resistance value of a floor heating system without heat preservation is 460 Ω.
10. The method for testing the heat preservation performance of the gel heat preservation and insulation thick coating according to claim 8, wherein the detection time of the test method is as follows: each group is 5 times/day, the duration of each heating on the outer side of the outer wall is not less than 8 hours, the frequency of the temperature measuring field is recorded for 1 minute, the recording time is prolonged to 2 hours after the heating is stopped, the regression condition of the temperature reduction after the heating is stopped is recorded, and the three groups are tested simultaneously.
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