CN110715954A - Building curtain wall thermal cycle performance detection equipment - Google Patents
Building curtain wall thermal cycle performance detection equipment Download PDFInfo
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- CN110715954A CN110715954A CN201911118663.2A CN201911118663A CN110715954A CN 110715954 A CN110715954 A CN 110715954A CN 201911118663 A CN201911118663 A CN 201911118663A CN 110715954 A CN110715954 A CN 110715954A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Abstract
The invention relates to a thermal cycle performance detection device for a building curtain wall, which comprises a spliced heat preservation box body and is characterized by also comprising at least one outdoor environment simulation control box and an indoor environment simulation control box, wherein the heat preservation box body is a box body with four side surfaces and a bottom surface, and the missing top surface of the heat preservation box body is used for being in sealing butt joint with one side surface of a curtain wall test piece; the outdoor environment simulation control box is in sealed butt joint with the bottom surface of the heat preservation box body, and the indoor environment simulation control box is communicated with the static pressure box body on the other side surface of the curtain wall test piece through a pipeline. The heat preservation box body is made of double-sided polyurethane color steel plates, the double-sided polyurethane color steel plates comprise foamed polyurethane, hard rubber and color steel plates, the color steel plates are arranged on two sides of the foamed polyurethane, and the hard rubber is arranged between the foamed polyurethane and the color steel plates; the foaming polyurethane is prepared from raw materials of a composite foaming agent, and the hard rubber contains magnesium oxide.
Description
Technical Field
The invention belongs to the technical field of curtain wall detection equipment, and particularly relates to thermal cycle performance detection equipment for a building curtain wall.
Background
In recent years, the national increasingly attaches importance to building energy conservation, and the building enclosure structure, especially a building curtain wall, has excellent heat preservation and heat insulation performance which are precondition for realizing building energy conservation, and the heat preservation performance of the building enclosure structure is an important parameter influencing building energy consumption. At present, the heat preservation performance of China is mainly detected by carrying out heat cycle detection on curtain walls.
Patent CN201520339590.0 discloses a thermal cycle test device for a building curtain wall, which comprises a curtain wall test piece, a supporting structure for supporting the curtain wall test piece, a heating structure, a cooling structure and a test structure; the temperature rising structure comprises a plurality of illuminating lamps right facing the outer surface of the curtain wall, lamp brackets for supporting the illuminating lamps and switches for controlling the illuminating lamps; the cooling structure comprises a water pipe and an air conditioner, the water pipe is arranged between the lamp holder and the outer surface of the curtain wall, and a plurality of water outlet holes facing the outer surface of the curtain wall are formed in the water pipe; the test structure comprises a plurality of temperature sensors arranged on the curtain wall, a temperature controller connected with the temperature sensors and used for controlling the temperature of the curtain wall, and a switch of the lighting lamp is connected with the temperature controller.
Patent CN201520563045.X discloses a large-scale building curtain detects installation box, including the box frame that constitutes by the steel construction, correspond on the net of box frame and install the closing plate, the inside of box frame is equipped with a plurality of layers, is equipped with the air pressure passageway between two adjacent layers. The patent CN201822265153.5 provides a curtain wall detection device, which includes a test box body, the test box body is a sub-test box body arranged in an array, an environment simulator is installed in the sub-test box body, and the appearance size and structure of each sub-test box body are the same; this curtain detection device makes the curtain test box body small-size unit, and the modularization can detect not unidimensional curtain through the concatenation combination of test box body to the test box body modularization is convenient for shift and carry, and the test environment is not being restricted in the laboratory yet.
The existing detection equipment for the heat preservation performance of the curtain wall gradually uses the box body or the plate which can be flexibly spliced as the detection box body, and the size of the detection box body can be reasonably adjusted according to the difference of the detection area of the curtain wall test piece. However, because various constant temperature and humidity devices and control devices are required to be installed inside the whole detection equipment, the volume of the whole detection equipment is still large, and when the large-scale curtain wall test piece is detected, the equipment is still heavy, the flexibility is low, the use efficiency is low, and the large-scale popularization and application are not facilitated. In addition, the material of detection box generally adopts the various steel sheet of two-sided polyurethane, in order to improve detection box thermal insulation performance, improves and detects the accuracy, the various steel sheet of great polyurethane of unit weight becomes first-selected, however, will lead to detection box weight increase like this, is unfavorable for installation and removal.
Disclosure of Invention
Aiming at the problems, the invention provides a building curtain wall thermal cycle performance detection device, wherein a refrigeration device and a constant temperature device are separately arranged and respectively and flexibly moved, and can be flexibly detached from a detection box body, so that the flexibility of a simple detection instrument is increased. In addition, the detection equipment uses the spliced heat-insulating box body as the detection box body, and on the basis of placing the curtain wall test piece in the existing spliced box body, the heat-insulating box body and the curtain wall test piece adopt a buckling mode, namely one side surface of the heat-insulating box body is buckled at the detected part of the curtain wall test piece. The invention improves the plate of the heat insulation box body, improves the heat insulation performance of the plate and reduces the influence of high and low temperature detection conditions on the plate alternately.
In order to achieve the aim, the invention provides a thermal cycle performance detection device for a building curtain wall, which comprises a spliced heat preservation box body, at least one outdoor environment simulation control box and an indoor environment simulation control box, wherein the heat preservation box body is a box body with four side surfaces and a bottom surface, and the missing top surface of the heat preservation box body is used for being in sealing butt joint with one side surface of a curtain wall test piece; the outdoor environment simulation control box is in sealed butt joint with the bottom surface of the heat preservation box body, and the indoor environment simulation control box is communicated with the static pressure box body on the other side surface of the curtain wall test piece through a pipeline.
The heat preservation box body is made of double-sided polyurethane color steel plates, the double-sided polyurethane color steel plates comprise foamed polyurethane, hard rubber and color steel plates, the color steel plates are arranged on two sides of the foamed polyurethane, and the hard rubber is arranged between the foamed polyurethane and the color steel plates; the preparation raw materials of the foaming polyurethane comprise isocyanate, polyether polyol, a composite foaming agent, a catalyst and a surfactant, wherein the composite foaming agent comprises cyclopentane, sodium bicarbonate, ammonium carbonate and water; the hard rubber contains magnesium oxide as a vulcanizing agent and/or filler.
The isocyanate is selected from one or the combination of more than two of toluene diisocyanate, polyphenyl polymethylene polyisocyanate and diphenylmethane diisocyanate.
The polyether polyol is commonly used for preparing foaming polyurethane in the market, for example, the polyether polyol takes alcohols such as propylene glycol, ethylene glycol, glycerol, trimethylolpropane, xylitol, sorbitol, sucrose and the like as an initiator, the hydroxyl value is 200-550mgKOH/g, and the viscosity is 1500-6000mPa.s, for example, the polyether polyols H6305Y, H4526A, H9211, HP2204 and the like of Hongbaoli group GmbH.
The composite foaming agent comprises cyclopentane, sodium bicarbonate, ammonium carbonate and water, and preferably, the composite foaming agent further comprises isopentane. The composite foaming agent is an organic/inorganic composite foaming agent, and the raw materials are cheap and easily available, so that the composite foaming agent is more environment-friendly. The sodium bicarbonate releases carbon dioxide at about 50 ℃, and the ammonium carbonate releases carbon dioxide and ammonia gas at normal temperature, and can be matched with organic foaming agents such as cyclopentane and isopentane for foaming; during the foaming process, the ammonia reacts with the redundant carbon dioxide, so that the redundant carbon dioxide can be absorbed, large bubbles or dense bubbles caused by more carbon dioxide gas at a certain position are prevented, and the bubbles at other positions are sparse, so that the aim of uniform foaming is fulfilled.
The catalyst is a catalyst commonly used in the preparation of foaming polyurethane on the market, such as triethylamine, tin dioctoate and the like.
The surfactant is a surfactant commonly used in the market for preparing foamed polyurethane, for example, a silicone oil surfactant.
Based on 100 parts of polyether polyol, the preparation raw materials of the foamed polyurethane comprise, by mass: 160 parts of 140-140 parts of isocyanate, 7-9 parts of cyclopentane, 6-8 parts of sodium bicarbonate, 2-3 parts of ammonium carbonate, 2-5 parts of catalyst, 1-3 parts of water, 2-4 parts of surfactant and 3-5 parts of isopentane.
The hard rubber is prepared by mixing natural rubber, butadiene rubber or chloroprene rubber with sulfur and heating and vulcanizing, and the hard rubber contains magnesium oxide and is used as a vulcanizing agent and/or a filler. Preferably, the magnesium oxide is 5 to 10 parts based on 100 parts by weight of the rubber raw material. Preferably, the hard rubber is arranged on two sides of the foamed polyurethane, and the color steel plate is arranged on the outer side of the hard rubber.
According to the double-sided polyurethane color steel plate, on the basis of the traditional form, a foaming agent for foaming polyurethane is improved, so that the formed foam is more uniform, the heat insulation performance of the double-sided polyurethane color steel plate is improved, the weight of the double-sided polyurethane color steel plate is reduced, and the double-sided polyurethane color steel plate is convenient to use. The hard rubber is arranged between the foamed polyurethane and the color steel plate, and has the following advantages: (1) enhancing the heat insulation performance of the double-sided polyurethane color steel plate; (2) the strength of the foamed polyurethane is enhanced, and the double-sided polyurethane color steel plate is prevented from deforming in the pressing process; (3) the deformation problem of the double-sided polyurethane color steel plate is improved after the double-sided polyurethane color steel plate passes through a high-temperature and low-temperature alternating environment in use; (4) the fire resistance is enhanced. After the double-sided polyurethane color steel plate is subjected to high-low temperature alternate environment, the deformation is small, so that the cracks of the spliced heat-insulating box body caused by the deformation of the plate are greatly improved, and the heat-insulating performance of the heat-insulating box body is improved. The magnesium oxide contained in the hard rubber can absorb carbon dioxide gas released by a small amount of sodium bicarbonate at high temperature, so that a synergistic effect is achieved for reducing the expansion deformation of the double-sided polyurethane color steel plate.
The detection equipment utilizes the existing curtain wall detection static pressure box body as an indoor environment simulation box, and the indoor environment simulation control box provides proper indoor detection conditions for the static pressure box body; the heat preservation box body is used as an outdoor environment simulation box, and the outdoor environment simulation control box provides proper temperature detection conditions for the heat preservation box body.
The heat preservation box body is a five-surface box body with four side surfaces and a bottom surface, wherein the lacking top surface is used for being in sealed butt joint with the tested surface of the curtain wall test piece, namely the five-surface box body is buckled on the surface of the curtain wall test piece for detection. In traditional curtain thermal cycle check out test set, generally take to place complete curtain test piece in the insulation box, though can be according to the size of curtain test piece adjustment insulation box among the prior art, nevertheless need pack the curtain test piece wholly into in the insulation box, like this, in the application that large-scale curtain test piece detected, it is higher to the requirement of insulation box. The heat insulation box body disclosed by the invention not only can adjust the size of the heat insulation box body according to the size of the curtain wall test piece, but also does not need to integrally pack the curtain wall test piece into the heat insulation box body, so that the plates of the heat insulation box body are saved.
The heat preservation box does the various steel sheet concatenation of two-sided polyurethane forms, the outside of the various steel sheet of two-sided polyurethane is equipped with steel structural framework, the various steel sheet of two-sided polyurethane splices each other, then connects the steel structural framework in the outside each other fixedly to this accomplishes the fixed of heat preservation box, consequently, steel structural framework can strengthen the structural rigidity of heat preservation box, steel structural framework belongs to common material in this field moreover, uses portably, and the cost is lower. According to the area of different curtain test pieces, select the various steel sheet of two-sided polyurethane of suitable size to splice, constitute insulation box, after the detection, dismantle the various steel sheet of two-sided polyurethane, save space.
Preferably, the four sides of the double-sided polyurethane color steel plate are sealed by polyvinyl chloride plates with the thickness of 2-3mm, so that the heat insulation performance of the heat insulation box body is further improved.
Preferably, the heat preservation box body further comprises a splicing angle frame, nylon bolts and nuts, the steel structure frame is connected with the double-sided polyurethane color steel plate through the nylon bolts and the nuts, and the joints of the side face and the bottom face of the heat preservation box body are fixed through the splicing angle frame, so that the problem of interference in the three-dimensional direction is solved, and the heat preservation box body with a pentahedron shape is finally spliced.
The bottom surface of the heat preservation box body is provided with a first inlet and a first outlet which are used for being connected with the outdoor environment simulation control box, so that the heat preservation box body is convenient for inputting and outputting airflow.
The outdoor environment simulation control box comprises a first evaporator, a compressor, a heating device and an outdoor case, wherein the first evaporator and the heating device are arranged inside the outdoor case, and the compressor is arranged outside the outdoor case; and the side surface of the outdoor case is provided with a second inlet and a second outlet, the second outlet is in sealed butt joint with or connected with the first inlet of the heat-insulating case body, and the second inlet is in sealed butt joint with or connected with the first outlet of the heat-insulating case body and is used for inputting and outputting air flow generated by the outdoor case into and out of the heat-insulating case body. The first evaporator and the heating device respectively convey cold air flow and hot air flow to the heat preservation box body, and control of refrigeration and heating alternate circulation is achieved.
Preferably, the inner wall of the outdoor case is provided with a heat insulation material, so that the refrigeration or heating efficiency is improved.
The compressor has high energy efficiency, so that the heat preservation box body can be quickly cooled, and the detection efficiency is improved.
Preferably, the number of the compressors is 2-3, the number of the first evaporators is equal to that of the compressors, and when the large curtain wall test piece is subjected to thermal cycle detection, the number of the compressors and the number of the first evaporators are increased, so that the refrigeration rate can be increased, and the required temperature can be quickly reached; on the other hand, the arrangement of a plurality of compressors and the first evaporator can realize graded starting and graded temperature control, and is suitable for different detection requirements.
When the curtain wall test piece is large, the size of the heat preservation box body is correspondingly enlarged, the number of the outdoor environment simulation control boxes is preferably 2-3, and the refrigerating or heating amount is increased. The plurality of outdoor environment simulation control boxes can be horizontally arranged to adapt to curtain wall test pieces with larger width; a plurality of outdoor environment simulation control boxes can be vertically arranged to be suitable for curtain wall test pieces with large heights. Correspondingly, the heat preservation box body is provided with a plurality of openings for butting or connecting a plurality of outdoor environment simulation control boxes. Due to the design, the working power can be increased, the temperature uniformity of each part of a large curtain wall test piece is ensured, and the detection accuracy is improved.
The indoor environment simulation control box comprises a heater, a second evaporator, a dehumidifier and an indoor case, wherein the heater, the second evaporator and the dehumidifier are all arranged in the indoor case; and a third inlet and a third outlet are arranged on the side surface of the indoor case, the third inlet and the third outlet are connected with the static pressure box body through pipelines, and airflow generated by the indoor case is input into and output from the static pressure box body to provide a constant temperature detection environment for the static pressure box body.
Preferably, the inner wall of the indoor case is provided with a heat insulation material, so that the refrigeration or heating efficiency is improved.
According to the invention, two designs are carried out on the arrangement of the pipeline in the static pressure box body, so that the detection accuracy is improved. The first type, the pipeline gets into from the bottom of static pressure box to extend to the top of static pressure box, the opening of pipeline is located the top of static pressure box for after the constant temperature air current that indoor environment simulation control box produced got into by the top of static pressure box, flow from top to bottom on the curtain test piece surface, the inside and outside air current of pipeline constantly carries out the heat exchange simultaneously, and the temperature of the outside air current of balanced pipeline improves the gaseous homogeneity on curtain test piece surface.
Secondly, the pipeline is provided with a plurality of parallel pipelines which respectively enter from the upper part, the middle part and the lower part of the static pressure box body and simultaneously act on the curtain wall test piece, and the uniformity of the gas on the surface of the curtain wall test piece can also be improved. In one embodiment of the invention, the pipeline is provided with three parallel pipelines, and the three parallel pipelines respectively enter from the upper part, the middle part and the lower part of the static pressure box body and simultaneously act on the curtain wall test piece.
The detection equipment provided by the invention separates the traditional refrigeration and heating equipment for curtain wall thermal cycle detection into two parts, so that the refrigeration equipment is connected with the heat insulation box body, the curtain wall is used for detecting the original static pressure box body, and the original static pressure box body is connected with the heating equipment, so that outdoor and indoor detection environments can be respectively provided at two sides of the curtain wall, and the detection equipment can be flexibly applied. Because original static pressure box and concatenation formula insulation box have been utilized for static pressure box and insulation box need not hold holistic curtain test piece neither, only need cover and sealed butt joint need the curtain test piece that detects the part can, especially be fit for the application that large-scale curtain detected.
The outdoor environment simulation control box and the indoor environment simulation control box of the detection equipment are controlled by a unified control system, and the control system comprises a platinum resistor temperature sensor, a temperature controller, a time controller and a PLC (programmable logic controller). The platinum resistance temperature sensor is arranged in the static pressure box body and the heat preservation box body and used for monitoring the environment temperature of the curtain wall test piece in real time, and the platinum resistance temperature sensor is high in sensitivity, so that the temperature error in the static pressure box body and the heat preservation box body is reduced to 0.1 ℃. The platinum resistance temperature sensor, the temperature controller and the time controller are connected with the PLC through lines, the platinum resistance temperature sensor inputs acquired temperature data into the temperature controller, the temperature controller is connected with the compressor, the first evaporator, the heating device, the heater, the second evaporator and the dehumidifier through lines, and the aim of adjusting the detection temperatures in the static pressure box body and the heat preservation box body is fulfilled by controlling the refrigeration or heating equipment; the PLC and the time controller control the detection time at different temperatures according to a preset program.
Preferably, the control system is capable of one-click on/off control.
The control system can be arranged on the side surface of the heat preservation box body, the static pressure box body, the outdoor environment simulation control box or the indoor environment simulation control box.
The bottom of the outdoor environment simulation control box and the bottom of the indoor environment simulation control box are preferably provided with universal wheels and brake retainers, and the positions and the fixing positions are convenient to move. The outdoor environment simulation control box and the indoor environment simulation control box are preferably made of double-sided polyurethane color steel plates or double-sided color steel polystyrene boards, and have good heat insulation performance.
The building curtain wall thermal cycle performance detection equipment provided by the invention has the following beneficial effects:
(1) the refrigeration equipment and the heating equipment are separately arranged and managed, so that the flexibility is increased, and the required equipment can be flexibly configured according to different detection requirements; (2) the split mounting type heat preservation box body is flexible to apply, saves space and is suitable for large-scale curtain wall detection; (3) the method is suitable for field assembly and detection; (4) the temperature control precision is high, and the high-temperature and low-temperature cyclic alternate switching control from +82 ℃ to-18 ℃ can be realized; (5) the double-sided polyurethane color steel plate adopts the foamed polyurethane, the hard rubber and the color steel plate which are specially designed and formulated, so that the volume weight of the heat-insulating box body is reduced, the heat-insulating performance is enhanced, and the deformation is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the device.
Fig. 2 is a view showing a structure of the thermal container, in which (a) is a front view and (b) is a side sectional view.
Fig. 3 is a schematic diagram of the overall structure of another alternative device.
In the figure, 1-insulation box body, 101-side surface, 102-bottom surface, 103-steel structural frame, 104-splicing corner frame, 105-nylon bolt and nut, 106-first inlet, 107-first outlet, 2-outdoor environment simulation control box, 201-first evaporator, 202-compressor, 203-heating pipe, 204-outdoor case, 205-second inlet, 206-second outlet, 3-indoor environment simulation control box, 301-heater, 302-second evaporator, 303-dehumidifier, 304-indoor case, 305-third inlet, 306-third outlet, 4-insulation material, 5-static pressure box body, 6-curtain wall test piece, 7-ventilation pipeline, 8-control box and 801-platinum resistance temperature sensor.
Detailed Description
Example 1
The panel of the insulation box of this embodiment is the various steel sheet of two-sided polyurethane, and the various steel sheet of two-sided polyurethane includes various steel sheet, ebonite, foaming polyurethane board and various steel sheet from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol H9211 from Hongbaoli group GmbH; 70 parts of diphenylmethane diisocyanate, 70 parts of polyphenyl polymethylene polyisocyanate; 7 parts of cyclopentane, 6 parts of sodium bicarbonate, 2 parts of ammonium carbonate, 2 parts of catalyst triethylamine, 1 part of water and 2 parts of silicone oil surfactant.
The preparation method comprises the following steps:
(1) polyether polyol H6305Y, H4526A, H9211, triethylamine, cyclopentane, sodium bicarbonate, ammonium carbonate, water and silicone oil surfactant are uniformly stirred to obtain composite polyether;
(2) the composite polyether, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate are stirred and mixed, and the foamed polyurethane plate is prepared by foaming, forming, curing and cutting according to the production process of foamed polyurethane.
The hard rubber of this example was prepared by mixing 100 parts of chloroprene rubber with 40 parts of sulfur, and 5 parts of magnesium oxide as a vulcanizing agent, followed by heat vulcanization.
The hard rubber is glued on the foamed polyurethane board, and the color steel plate is glued on the hard rubber and the lower surface of the foamed polyurethane board to manufacture the double-sided polyurethane color steel plate of the embodiment.
Example 2
The panel of the insulation box of this embodiment is the various steel sheet of two-sided polyurethane, and the various steel sheet of two-sided polyurethane includes various steel sheet, foaming polyurethane board, ebonite and various steel sheet from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol HP2204 from Hongbaoli group GmbH; 80 parts of diphenylmethane diisocyanate, 80 parts of polyphenyl polymethylene polyisocyanate; 9 parts of cyclopentane, 8 parts of sodium bicarbonate, 3 parts of ammonium carbonate, 5 parts of tin dioctoate as a catalyst, 3 parts of water and 4 parts of silicone oil surfactant.
The preparation method comprises the following steps:
(1) polyether polyol H6305Y, H4526A, HP2204, tin dioctanoate, cyclopentane, sodium bicarbonate, ammonium carbonate, water and silicone oil surfactant are uniformly stirred to obtain composite polyether;
(2) the composite polyether, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate are stirred and mixed, and the foamed polyurethane plate is prepared by foaming, forming, curing and cutting according to the production process of foamed polyurethane.
The hard rubber of this example was prepared by mixing 100 parts of chloroprene rubber with 40 parts of sulfur, 5 parts of magnesium oxide as a vulcanizing agent, and 5 parts of magnesium oxide as a filler, and heat vulcanizing the mixture.
The hard rubber is glued below the foamed polyurethane board, and the color steel plate is glued below the hard rubber and above the foamed polyurethane board to manufacture the double-sided polyurethane color steel plate of the embodiment.
Example 3
The panel of the insulation box of this embodiment is the various steel sheet of two-sided polyurethane, and the various steel sheet of two-sided polyurethane includes various steel sheet, hard rubber, foaming polyurethane board, hard rubber and various steel sheet from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol HP2204 from Hongbaoli group GmbH; 70 parts of diphenylmethane diisocyanate, 80 parts of polyphenyl polymethylene polyisocyanate; 8 parts of cyclopentane, 7 parts of sodium bicarbonate, 3 parts of ammonium carbonate, 4 parts of tin dioctanoate as a catalyst, 2 parts of water, 3 parts of silicone oil surfactant and 3 parts of isopentane.
The preparation method comprises the following steps:
(1) polyether polyol H6305Y, H4526A, HP2204, tin dioctanoate, cyclopentane, sodium bicarbonate, ammonium carbonate, isopentane, water and silicone oil surfactant are uniformly stirred to obtain composite polyether;
(2) the composite polyether, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate are stirred and mixed, and the foamed polyurethane plate is prepared by foaming, forming, curing and cutting according to the production process of foamed polyurethane.
The hard rubber of this example was prepared by mixing 100 parts of chloroprene rubber with 40 parts of sulfur, 5 parts of magnesium oxide as a vulcanizing agent, and 5 parts of magnesium oxide as a filler, and heat vulcanizing the mixture.
The hard rubber is glued on two sides of the foamed polyurethane plate, and the color steel plate is glued on the outer side surface of the hard rubber to manufacture the double-sided polyurethane color steel plate.
Comparative example 1
The plate of the insulation box body of the comparative example is a double-sided polyurethane color steel plate, and the double-sided polyurethane color steel plate comprises a color steel plate, a foamed polyurethane plate and a color steel plate from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol HP2204 from Hongbaoli group GmbH; 70 parts of diphenylmethane diisocyanate, 70 parts of polyphenyl polymethylene polyisocyanate; 7 parts of cyclopentane, 2 parts of catalyst triethylamine, 1 part of water and 2 parts of silicone oil surfactant.
The preparation method comprises the following steps:
(1) polyether polyol H6305Y, H4526A, HP2204, triethylamine, cyclopentane, water and a silicone oil surfactant are uniformly stirred to obtain composite polyether;
(2) the composite polyether, diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate are stirred and mixed, and the foamed polyurethane plate is prepared by foaming, forming, curing and cutting according to the production process of foamed polyurethane.
The color steel plates are glued on two sides of the foamed polyurethane plate to prepare the double-sided polyurethane color steel plate of the comparative example.
Comparative example 2
The plate of the insulation box body of the comparative example is a double-sided polyurethane color steel plate, and the double-sided polyurethane color steel plate comprises a color steel plate, hard rubber, a foamed polyurethane plate and a color steel plate from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol H9211 from Hongbaoli group GmbH; 70 parts of diphenylmethane diisocyanate, 70 parts of polyphenyl polymethylene polyisocyanate; 7 parts of cyclopentane, 2 parts of catalyst triethylamine, 1 part of water and 2 parts of silicone oil surfactant.
The preparation method is the same as in comparative example 1.
The hard rubber of this comparative example was prepared by mixing 100 parts of chloroprene rubber with 40 parts of sulfur, and heating and vulcanizing the mixture without adding magnesium oxide.
The hard rubber is glued on the upper surface of the foaming polyurethane plate, and the color steel plate is glued on the upper surface of the hard rubber and the lower surface of the foaming polyurethane plate to manufacture the double-sided polyurethane color steel plate of the comparative example.
Comparative example 3
The plate of the insulation box body of the comparative example is a double-sided polyurethane color steel plate, and the double-sided polyurethane color steel plate comprises a color steel plate, hard rubber, a foamed polyurethane plate and a color steel plate from top to bottom.
The preparation raw materials of the foaming polyurethane comprise the following components:
30 parts of polyether polyol H6305Y, 30 parts of polyether polyol H4526A and 40 parts of polyether polyol H9211 from Hongbaoli group GmbH; 70 parts of diphenylmethane diisocyanate, 70 parts of polyphenyl polymethylene polyisocyanate; 7 parts of cyclopentane, 6 parts of sodium bicarbonate, 2 parts of ammonium carbonate, 2 parts of catalyst triethylamine, 1 part of water and 2 parts of silicone oil surfactant.
The preparation method is the same as that of example 1.
The hard rubber of this example was prepared by mixing 100 parts of chloroprene rubber with 40 parts of sulfur, and heating and vulcanizing the mixture without adding magnesium oxide.
The hard rubber is glued on the upper surface of the foaming polyurethane plate, and the color steel plate is glued on the upper surface of the hard rubber and the lower surface of the foaming polyurethane plate to manufacture the double-sided polyurethane color steel plate of the comparative example.
The thickness of the foamed polyurethane sheet in the above examples and comparative examples was 0.6 mm. The thermal insulation performance is detailed in Table 1.
TABLE 1 comparison of the Properties of examples 1-3 and comparative examples 1-3
| Volume weight (kg/m)3) | Coefficient of thermal conductivity (W/m.k) | Amount of distortion (%) | |
| Example 1 | 35 | 0.017 | +0.2 |
| Example 2 | 35 | 0.018 | +0.2 |
| Example 3 | 30 | 0.016 | +0.15 |
| Comparative example 1 | 40 | 0.024 | +0.3 |
| Comparative example 2 | 45 | 0.022 | +0.25 |
| Comparative example 3 | 35 | 0.019 | +0.3 |
As can be seen from Table 1, the bulk weights and thermal conductivities of examples 1 to 3 are lower than those of comparative examples 1 to 3, uniform bubbles are formed probably due to the composite foaming agent in the examples, and the amount of the bubbles is increased, thereby reducing the bulk weights and the thermal conductivities and improving the thermal insulation performance, and in addition, the addition of the hard rubber has a positive effect on the thermal conductivity. The deformation amounts of examples 1 to 3 were all lower than those of comparative examples 1 to 3, and it was possible to absorb excessive gas due to the addition of the hard rubber and magnesium oxide, and to resist the deformation of the hard rubber itself.
Example 4
The structure of the building curtain wall thermal cycle performance detection device of the embodiment is shown in fig. 1, and comprises a splicing type heat preservation box body 1, an outdoor environment simulation control box 2 and an indoor environment simulation control box 3, wherein the outdoor environment simulation control box 2 is in sealed butt joint with the bottom surface 102 of the heat preservation box body 1, and the indoor environment simulation control box 3 is communicated with a static pressure box body 5 on the other side surface of a curtain wall test piece 6 through a ventilation pipeline 7.
The static pressure box body 5 is used as an indoor environment simulation box and is in sealed butt joint with the left side surface of the curtain wall test piece 6, and the indoor environment simulation control box 3 provides proper indoor detection conditions for the static pressure box body 5; the heat preservation box body 1 is used as an outdoor environment simulation box, and the outdoor environment simulation control box 2 provides proper temperature detection conditions for the heat preservation box body 1.
Specifically, the structure of the heat insulation box body 1 is as shown in fig. 2, the heat insulation box body 1 is a box body with four side surfaces 101 and a bottom surface 102, the missing top surface of the heat insulation box body 1 is used for being in sealed butt joint with the right side surface of the curtain wall test piece 6, namely, the five-surface box body is buckled on the right side surface of the curtain wall test piece 6 for detection. Insulation box 1 forms for the panel concatenation, and the panel is the various steel sheet of two-sided polyurethane in embodiment 3, and the outside of panel is equipped with steel structural framework 103, and the panel splices each other, then connects the steel structural framework 103 in the splice panel outside each other fixedly to this is accomplished the fixed after the panel concatenation.
The insulation box body 1 is fixed by a splicing angle frame 104, nylon bolts and nuts 105, a steel structure frame 103 is connected with plates and connected with each other through the nylon bolts and the nuts 105, and the joint of the side surface 101 and the bottom surface 102 of the insulation box body 1 is fixed by the splicing angle frame 104, so that the interference problem in the three-dimensional direction is solved, and the insulation box body 1 of a pentahedron is finally spliced.
The bottom surface 102 of the thermal insulation box body 1 is provided with a first inlet 106 and a first outlet 107 which are used for connecting the outdoor environment simulation control box 2, and the air flow can be conveniently input into and output from the thermal insulation box body 1. The bottom of the heat preservation box body 1 is provided with a support frame which is used for stably supporting.
The outdoor environment simulation control box 2 comprises a first evaporator 201, a compressor 202, a heating pipe 203 and an outdoor case 204, the first evaporator 201 and the heating pipe 203 are arranged inside the outdoor case 204, the compressor 202 is arranged outside the outdoor case 204, the compressor 202 has high energy efficiency, the heat preservation box body 1 can be rapidly cooled, and the detection efficiency is improved; the side surface of the outdoor case 204 is provided with a second inlet 205 and a second outlet 206, the second outlet 206 is in sealing butt joint with the first inlet 106 of the heat preservation box body 1, the second inlet 205 is in sealing butt joint with the first outlet 107 of the heat preservation box body 1 and is used for inputting and outputting airflow generated by the outdoor case 204 into and out of the heat preservation box body 1, and the inner wall of the outdoor case 204 is provided with heat preservation materials 4, so that the refrigeration or heating efficiency is improved. The first evaporator 201 and the heating pipe 203 respectively convey cold air flow and hot air flow to the heat preservation box body 1, and control of refrigeration and heating alternate circulation is achieved.
The number of the compressors 202 is 3, and each compressor 202 is correspondingly connected with one first evaporator 201, so that the detection requirement of the large curtain wall test piece 6 is met.
The outdoor environment simulation control box 2 and the heat preservation box body 1, the heat preservation box body 1 and the curtain wall test piece 6 and the static pressure box body 5 and the curtain wall test piece 6 are in sealing butt joint by adopting foaming glue, and the sealing and heat preservation effects are good.
The indoor environment simulation control box 3 comprises a heater 301, a second evaporator 302, a dehumidifier 303 and an indoor case 304, wherein the heater 301, the second evaporator 302 and the dehumidifier 303 are all arranged in the indoor case 304 to generate constant temperature air flow; the side surface of the indoor chassis 304 is provided with a third inlet 305 and a third outlet 306, the third inlet 305 and the third outlet 306 are connected with the static pressure box 5 through a ventilation pipeline 7, and the airflow generated by the indoor chassis 304 is input into and output from the static pressure box 5, so as to provide a constant temperature detection environment for the static pressure box 5. The inner wall of the indoor case 204 is provided with a heat insulating material 4.
The bottom that ventilation pipeline 7 got into from static pressure box 5 to extend to static pressure box 5's top, ventilation pipeline 7's opening is located static pressure box 5's top, make the constant temperature air current that indoor environment simulation control box 3 produced get into the back by static pressure box 5's top, flow from top to bottom on curtain test piece 6 surface, the inside and outside air current of ventilation pipeline 7 constantly carries out the heat exchange simultaneously, the temperature of the outside air current of balanced ventilation pipeline 7, improve the gaseous homogeneity in curtain test piece 6 surface.
The universal wheels and the brake fixer are arranged at the bottoms of the outdoor environment simulation control box 2 and the indoor environment simulation control box 3, so that the position and the fixing position can be conveniently moved. The outdoor environment simulation control box 2 and the indoor environment simulation control box 3 are made of double-sided polyurethane color steel plates and have good heat insulation performance.
The outdoor environment simulation control box 2 and the indoor environment simulation control box 3 are controlled by a control system, and the control system comprises a platinum resistance temperature sensor 801, a temperature controller, a time controller and a PLC (programmable logic controller). Two platinum resistance temperature sensors 801 are respectively arranged at the upper part and the lower part in the heat preservation box body 1, two platinum resistance temperature sensors 801 are respectively arranged at the upper part and the lower part in the static pressure box body 5 and are used for monitoring the environment temperature of the curtain wall test piece 6 in real time, and the temperature error in the static pressure box body 5 and the heat preservation box body 1 is reduced to 0.1 ℃. The temperature controller, the time controller and the PLC are arranged in the control box 8, and the control box 8 is arranged on the side surface of the outdoor environment simulation control box 2. The platinum resistance temperature sensor 801, the temperature controller and the time controller are connected with the PLC through lines, the platinum resistance temperature sensor 801 inputs acquired temperature data into the temperature controller, the temperature controller is connected with the compressor 202, the first evaporator 201, the heating pipe 203, the heater 301, the second evaporator 302 and the dehumidifier 303 through lines, and the aim of adjusting the detection temperature in the static pressure box body 5 and the heat preservation box body 1 is achieved by controlling the refrigeration or heating equipment; the PLC and the time controller control the detection time at different temperatures according to a preset program, and one-key starting/closing control can be realized. For example, in the detection, the temperature inside the incubator 1 is increased to 83 ℃ first, maintained for 3 hours, and then decreased to-20 ℃ after maintained for 3 hours, and the cycle is repeated 3 times.
Example 5
The structure of the building curtain wall thermal cycle performance detection device of the embodiment is shown in fig. 3, and comprises two outdoor environment simulation control boxes 2 which are arranged up and down and are connected up and down through inserting cores around the box body. The corresponding heat preservation box body 1 is additionally provided with two openings on the basis of the embodiment 1 so as to correspond to the added outdoor environment simulation control box 2. Due to the design, the working power can be increased, the temperature uniformity of each part of the curtain wall test piece 6 is ensured, and the detection accuracy is improved.
The ventilation pipeline 7 of this embodiment sets up three parallelly connected pipeline, and three parallelly connected pipeline gets into from the upper and middle, the lower part of static pressure box 5 respectively, acts on curtain test piece 6 simultaneously, also can improve the gaseous homogeneity in curtain test piece 6 surface, improves and detects the precision.
The other structure of this embodiment is the same as that of embodiment 1.
Claims (10)
1. The building curtain wall thermal cycle performance detection equipment comprises a spliced heat preservation box body and is characterized by further comprising at least one outdoor environment simulation control box and at least one indoor environment simulation control box, wherein the heat preservation box body is a box body with four side surfaces and a bottom surface, and the missing top surface of the heat preservation box body is used for being in sealing butt joint with one side surface of a curtain wall test piece; the outdoor environment simulation control box is in sealed butt joint with the bottom surface of the heat preservation box body, and the indoor environment simulation control box is communicated with the static pressure box body on the other side surface of the curtain wall test piece through a pipeline;
the heat preservation box body is made of double-sided polyurethane color steel plates, the double-sided polyurethane color steel plates comprise foamed polyurethane, hard rubber and color steel plates, the color steel plates are arranged on two sides of the foamed polyurethane, and the hard rubber is arranged between the foamed polyurethane and the color steel plates; the preparation raw materials of the foaming polyurethane comprise isocyanate, polyether polyol, a composite foaming agent, a catalyst and a surfactant, wherein the composite foaming agent comprises cyclopentane, sodium bicarbonate, ammonium carbonate and water; the hard rubber contains magnesium oxide as a vulcanizing agent and/or filler.
2. The detection apparatus of claim 1, wherein the composite blowing agent comprises isopentane.
3. The detection device according to claim 2, wherein the preparation raw materials of the foamed polyurethane comprise, based on 100 parts of the polyether polyol, the following components in parts by mass: 160 parts of 140-140 parts of isocyanate, 7-9 parts of cyclopentane, 6-8 parts of sodium bicarbonate, 2-3 parts of ammonium carbonate, 2-5 parts of catalyst, 1-3 parts of water, 2-4 parts of surfactant and 3-5 parts of isopentane.
4. The detection apparatus according to claim 1, wherein the hard rubber is a hard rubber prepared by mixing natural rubber, butadiene rubber or chloroprene rubber with sulfur and vulcanizing the mixture by heating, and the hard rubber contains magnesium oxide as a vulcanizing agent and/or a filler.
5. The detecting apparatus according to claim 4, wherein the magnesium oxide is 5 to 10 parts by weight based on 100 parts by weight of the rubber raw material.
6. The detection device according to claims 1 to 5, wherein the heat preservation box body is formed by splicing the double-sided polyurethane color steel plates, steel structure frames are arranged on the outer sides of the double-sided polyurethane color steel plates, the double-sided polyurethane color steel plates are spliced with each other, and then the steel structure frames on the outer sides are connected and fixed with each other;
the bottom surface of the heat preservation box body is provided with a first inlet and a first outlet which are used for being connected with the outdoor environment simulation control box, so that the heat preservation box body is convenient for inputting and outputting airflow.
7. The detection device according to claim 1, wherein the outdoor environment simulation control box comprises a first evaporator, a compressor, a heating device and an outdoor cabinet, the first evaporator and the heating device are arranged inside the outdoor cabinet, and the compressor is arranged outside the outdoor cabinet;
the side surface of the outdoor case is provided with a second inlet and a second outlet, the second outlet is in sealed butt joint with or connected with the first inlet of the heat-preservation box body, and the second inlet is in sealed butt joint with or connected with the first outlet of the heat-preservation box body and is used for inputting and outputting airflow generated by the outdoor case into and out of the heat-preservation box body;
the number of the outdoor environment simulation control boxes is 2-3, and refrigeration or heating quantity can be increased.
8. The detection apparatus according to claim 1, wherein the indoor environment simulation control box comprises a heater, a second evaporator, a dehumidifier and an indoor cabinet, and the heater, the second evaporator and the dehumidifier are all arranged inside the indoor cabinet; and a third inlet and a third outlet are arranged on the side surface of the indoor case, the third inlet and the third outlet are connected with the static pressure box body through pipelines, and airflow generated by the indoor case is input into and output from the static pressure box body to provide a constant temperature detection environment for the static pressure box body.
9. The detection equipment according to claim 8, wherein the pipeline enters from the bottom of the static pressure box body and extends to the top of the static pressure box body, and the opening of the pipeline is positioned at the top of the static pressure box body, so that the constant-temperature air flow generated by the indoor environment simulation control box flows from top to bottom on the surface of the curtain wall test piece after entering from the top of the static pressure box body.
10. The detection device according to claim 8, wherein the pipeline is provided with three parallel pipelines, and the three parallel pipelines respectively enter from the upper part, the middle part and the lower part of the static pressure box body and simultaneously act on the curtain wall test piece.
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