CN104749214A - Transient plane source method-based constant-temperature heating bath device for measuring liquid thermal conductivity - Google Patents
Transient plane source method-based constant-temperature heating bath device for measuring liquid thermal conductivity Download PDFInfo
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Abstract
一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置，它涉及一种恒温热浴装置。本发明的目的是要解决现有恒温热浴装置通常基于热平衡的原理，对被测对象的加热时间缺乏量化的标准，难以判断待测液体是否与周围环境达到热平衡，达到设定的初始温度的问题。一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置包括计算机、第一液体注射器、第一液体输入管道、第一金属块、探头、第一液体输出管道、液态工质、第三金属块、热浴锅、片状热电偶测温仪、第二金属块、第四金属块、第二液体注射器、第二液体输入管道和第二液体输出管道。本发明可获得一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置。
The invention relates to a constant temperature heat bath device for measuring liquid thermal conductivity based on a transient plane heat source method, which relates to a constant temperature heat bath device. The purpose of the present invention is to solve the problem that the existing constant temperature heat bath device is usually based on the principle of heat balance, lacks quantitative standards for the heating time of the measured object, and is difficult to judge whether the liquid to be measured has reached thermal equilibrium with the surrounding environment and reached the set initial temperature. question. A constant temperature heat bath device for measuring liquid thermal conductivity based on the transient plane heat source method includes a computer, a first liquid injector, a first liquid input pipe, a first metal block, a probe, a first liquid output pipe, a liquid working medium, and a third A metal block, a heat bath, a plate thermocouple thermometer, a second metal block, a fourth metal block, a second liquid injector, a second liquid input pipe, and a second liquid output pipe. The invention can obtain a constant temperature heat bath device for measuring liquid thermal conductivity based on the transient plane heat source method.
Description
技术领域technical field
本发明涉及一种恒温热浴装置。The invention relates to a constant temperature heat bath device.
背景技术Background technique
现有的材料导热物性参数测量方法大致可分为瞬态法和稳态法，瞬态法由于其便捷的实验操作以及实验的快速性，得到了大量科研团体的青睐。瞬态平面热源法是一种典型的瞬态测量法，由于操作简单、测量精度高而得到了广泛应用，但该方法需要准确确定被测对象及探头的温度。目前，采用瞬态平面热源法测量液体的导热系数的研究相对较少，通常配备的液体池只能开展常温确定状态下的测量，缺乏高温液体池控温装置。常规的恒温热浴装置通常基于热平衡的原理，采用水浴或油浴的方式进行温控，对被测对象的加热时间缺乏量化的标准，并且由于采用瞬态平面热源法测量液体导热系数时，假设加热过程为半无限大平板加热模型，对液体容器有密封要求。常规温控方式难以准确测量被测液体或探头处的温度，限制了常规恒温热浴装置的使用。The existing methods for measuring thermal conductivity parameters of materials can be roughly divided into transient methods and steady-state methods. The transient method has been favored by a large number of scientific research groups due to its convenient experimental operation and rapidity of the experiment. The transient plane heat source method is a typical transient measurement method, which has been widely used due to its simple operation and high measurement accuracy, but this method needs to accurately determine the temperature of the measured object and the probe. At present, there are relatively few studies on measuring the thermal conductivity of liquids using the transient planar heat source method. The liquid pools usually equipped can only be used for measurements at normal temperatures, and there is a lack of temperature control devices for high-temperature liquid pools. Conventional constant temperature heat bath devices are usually based on the principle of heat balance, using water bath or oil bath for temperature control, lack of quantitative standards for the heating time of the measured object, and because the transient plane heat source method is used to measure the thermal conductivity of liquid, it is assumed that The heating process is a semi-infinite flat plate heating model, and there is a sealing requirement for the liquid container. Conventional temperature control methods are difficult to accurately measure the temperature of the measured liquid or the probe, which limits the use of conventional constant temperature heating bath devices.
瞬态平面热源法需要准确确定被测对象及探头的在开始测量前的初始温度，要求开始测量前液体样品已与周围环境达到热平衡，样品处于设定的初始温度，且温度分布均匀。常规的测量无法确定样品是否已经达到设定的初始温度，而且增加了等待时间，增加了试验周期。The transient plane heat source method needs to accurately determine the initial temperature of the measured object and the probe before starting the measurement. It is required that the liquid sample has reached thermal equilibrium with the surrounding environment before starting the measurement. The sample is at the set initial temperature and the temperature distribution is uniform. Conventional measurement cannot determine whether the sample has reached the set initial temperature, and increases the waiting time and test cycle.
发明内容Contents of the invention
本发明的目的是要解决现有恒温热浴装置通常基于热平衡的原理，对被测对象的加热时间缺乏量化的标准，难以判断待测液体是否与周围环境达到热平衡，达到设定的初始温度的问题，而提供一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置。The purpose of the present invention is to solve the problem that the existing constant temperature heat bath device is usually based on the principle of heat balance, lacks quantitative standards for the heating time of the measured object, and is difficult to judge whether the liquid to be measured reaches thermal equilibrium with the surrounding environment and reaches the set initial temperature. To solve the problem, a constant temperature heat bath device based on the transient plane heat source method for measuring the thermal conductivity of liquid is provided.
一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置包括计算机、第一液体注射器、第一液体输入管道、第一金属块、探头、第一液体输出管道、液态工质、第三金属块、热浴锅、片状热电偶测温仪、第二金属块、第四金属块、第二液体注射器、第二液体输入管道和第二液体输出管道；A constant temperature heat bath device for measuring liquid thermal conductivity based on the transient plane heat source method includes a computer, a first liquid injector, a first liquid input pipe, a first metal block, a probe, a first liquid output pipe, a liquid working medium, and a third A metal block, a heat bath, a sheet thermocouple thermometer, a second metal block, a fourth metal block, a second liquid injector, a second liquid input pipeline and a second liquid output pipeline;
所述的热浴锅内装有液态工质，第一金属块、第二金属块、第三金属块和第四金属块均置于在液态工质中；The heat bath is equipped with a liquid working medium, and the first metal block, the second metal block, the third metal block and the fourth metal block are all placed in the liquid working medium;
所述的第一金属块、第二金属块、第三金属块和第四金属块的表面上均开有等大的凹槽；第一金属块和第二金属块表面上开设的凹槽组成封闭的待测液体池；The surfaces of the first metal block, the second metal block, the third metal block and the fourth metal block are provided with grooves of equal size; the grooves on the surface of the first metal block and the second metal block consist of Closed liquid pool to be tested;
所述的第一液体注射器通过第一液体输入管道与封闭的待测液体池的下端相连通；封闭的待测液体池的上端与第一液体输出管道的一端与相连通，第一液体输出管道的另一端穿出热浴锅，与大气相连通；探头设置在液体池的内部，且与计算机相连通；The first liquid injector communicates with the lower end of the closed liquid pool to be tested through the first liquid input pipe; the upper end of the closed liquid pool to be tested communicates with one end of the first liquid output pipe, and the first liquid output pipe The other end passes through the heat bath and communicates with the atmosphere; the probe is set inside the liquid pool and communicates with the computer;
所述的第三金属块和第四金属块表面上开设的凹槽组成封闭的对比液体池；第二液体注射器通过第二液体输入管道与封闭的对比液体池的下端相连通；封闭的对比液体池的上端与第二液体输出管道的一端相连通，第二液体输出管道的另一端穿出热浴锅，与大气相连通；片状热电偶测温仪的探头置于封闭的对比液体池中。The grooves on the surface of the third metal block and the fourth metal block form a closed comparison liquid pool; the second liquid injector communicates with the lower end of the closed comparison liquid pool through the second liquid input pipe; the closed comparison liquid The upper end of the pool is connected with one end of the second liquid output pipe, and the other end of the second liquid output pipe passes through the heating bath and communicates with the atmosphere; the probe of the chip thermocouple thermometer is placed in the closed comparison liquid pool .
本发明的使用方法和原理：Using method and principle of the present invention:
本发明通过将液态工质加入到热浴锅中，将第一金属块、第二金属块、第三金属块和第四金属块置于在液态工质中；第一金属块、第二金属块、第三金属块和第四金属块的大小、形状和材质均相同，且封闭的待测液体池和封闭的对比液体池的尺寸相同；使用第一液体注射器将待测液体通过第一液体输入管道注入到封闭的待测液体池中，探头设置在封闭的待测液体池中，且与计算机相连接，且计算机内安装了Hot Disk热常数分析软件；使用第二液体注射器将相同体积的待测液体通过第二液体输入管道注入到封闭的对比液体池中，片状热电偶测温仪测量封闭的对比液体池内待测液体的温度，由于第一金属块、第二金属块、第三金属块和第四金属块的大小、形状和材质均相同，且封闭的待测液体池和封闭的对比液体池的尺寸相同；且第一金属第二金属块、第三金属块和第四金属块置于在液态工质中，加热条件相同，可以等效的认为封闭的对比液体池内待测液体的温度与封闭的待测液体池内待测液体的温度相同，因此，可以通过片状热电偶测温仪测得的封闭的对比液体池内待测液体的温度来确定封闭的待测液体池内待测液体的温度，已知封闭的待测液体池内待测液体的具体温度，开始试验，计算机给探头施加额定电流对待测液体进行加热，同时探头为hotdisk探头，表面可以产生温升，电阻增加，电信号反馈回计算机；通过材料电阻与温度的对应关系，得到温度随时间的变化曲线，通过对曲线的拟合与计算，得出待测液体的导热系数和热扩散系数。In the present invention, the first metal block, the second metal block, the third metal block and the fourth metal block are placed in the liquid working medium by adding the liquid working medium into the heat bath; the first metal block, the second metal block The size, shape and material of the block, the third metal block and the fourth metal block are the same, and the size of the closed liquid pool to be tested and the closed comparison liquid pool are the same; use the first liquid syringe to pass the liquid to be tested through the first liquid The input pipeline is injected into the closed liquid pool to be measured, the probe is arranged in the closed liquid pool to be tested, and is connected with a computer, and the Hot Disk thermal constant analysis software is installed in the computer; The liquid to be tested is injected into the closed comparison liquid pool through the second liquid input pipe, and the sheet thermocouple thermometer measures the temperature of the liquid to be tested in the closed comparison liquid pool. Since the first metal block, the second metal block, and the third The size, shape and material of the metal block and the fourth metal block are the same, and the size of the closed liquid pool to be tested and the closed comparison liquid pool are the same; and the first metal second metal block, the third metal block and the fourth metal block The block is placed in the liquid working medium, and the heating conditions are the same. It can be equivalently considered that the temperature of the liquid to be measured in the closed comparison liquid pool is the same as the temperature of the liquid to be measured in the closed liquid pool to be tested. Therefore, the thermocouple can The temperature of the liquid to be tested in the closed comparison liquid pool measured by the thermometer is used to determine the temperature of the liquid to be tested in the closed liquid pool to be tested. Knowing the specific temperature of the liquid to be tested in the closed liquid pool to be tested, the test is started, and the computer gives The probe applies a rated current to heat the liquid to be tested. At the same time, the probe is a hotdisk probe. The surface can generate temperature rise, increase the resistance, and the electrical signal is fed back to the computer; through the corresponding relationship between material resistance and temperature, the temperature change curve with time can be obtained. The fitting and calculation of the curve can obtain the thermal conductivity and thermal diffusivity of the liquid to be measured.
本发明可获得一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置。The invention can obtain a constant temperature heat bath device for measuring liquid thermal conductivity based on the transient plane heat source method.
附图说明Description of drawings
图1为具体实施方式一所述的一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置的结构示意图。Fig. 1 is a schematic structural view of a constant temperature heat bath device for measuring liquid thermal conductivity based on the transient planar heat source method described in the first embodiment.
具体实施方式Detailed ways
具体实施方式一：本实施方式是一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置包括计算机1、第一液体注射器2、第一液体输入管道3、第一金属块4、探头5、第一液体输出管道6、液态工质7、第三金属块8、热浴锅9、片状热电偶测温仪10、第二金属块13、第四金属块14、第二液体注射器15、第二液体输入管道16和第二液体输出管道17；Specific Embodiment 1: This embodiment is a constant temperature heat bath device based on the transient plane heat source method for measuring the thermal conductivity of liquids, including a computer 1, a first liquid injector 2, a first liquid input pipe 3, a first metal block 4, and a probe 5. First liquid output pipe 6, liquid working medium 7, third metal block 8, heat bath 9, sheet thermocouple thermometer 10, second metal block 13, fourth metal block 14, second liquid injector 15. A second liquid input pipeline 16 and a second liquid output pipeline 17;
所述的热浴锅9内装有液态工质7，第一金属块4、第二金属块13、第三金属块8和第四金属块14均置于在液态工质7中；A liquid working medium 7 is housed in the heat bath 9, and the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are all placed in the liquid working medium 7;
所述的第一金属块4、第二金属块13、第三金属块8和第四金属块14的表面上均开有等大的凹槽；第一金属块4和第二金属块13表面上开设的凹槽组成封闭的待测液体池11；The surfaces of the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are provided with grooves of equal size; the surfaces of the first metal block 4 and the second metal block 13 are The groove opened on the top forms a closed liquid pool 11 to be tested;
所述的第一液体注射器2通过第一液体输入管道3与封闭的待测液体池11的下端相连通；封闭的待测液体池11的上端与第一液体输出管道6的一端与相连通，第一液体输出管道6的另一端穿出热浴锅9，与大气相连通；探头5设置在液体池11的内部，且与计算机1相连通；The first liquid injector 2 communicates with the lower end of the closed test liquid pool 11 through the first liquid input pipe 3; the upper end of the closed test liquid pool 11 communicates with one end of the first liquid output pipe 6, The other end of the first liquid output pipe 6 passes through the heating bath 9 and communicates with the atmosphere; the probe 5 is arranged inside the liquid pool 11 and communicates with the computer 1;
所述的第三金属块8和第四金属块14表面上开设的凹槽组成封闭的对比液体池12；第二液体注射器15通过第二液体输入管道16与封闭的对比液体池12的下端相连通；封闭的对比液体池12的上端与第二液体输出管道17的一端相连通，第二液体输出管道17的另一端穿出热浴锅9，与大气相连通；片状热电偶测温仪10的探头置于封闭的对比液体池12中。The grooves provided on the surface of the third metal block 8 and the fourth metal block 14 form a closed comparison liquid pool 12; the second liquid injector 15 is connected to the lower end of the closed comparison liquid pool 12 through the second liquid input pipeline 16 Pass; The upper end of the closed comparison liquid pool 12 is connected with one end of the second liquid output pipeline 17, and the other end of the second liquid output pipeline 17 passes through the heat bath 9 and communicates with the atmosphere; the plate thermocouple thermometer The probe of 10 is placed in the closed comparison liquid pool 12.
图1为具体实施方式一所述的一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置的结构示意图；图1中1为计算机，2为液体注射器，3为液体输入管道，4为第一金属块，5为探头，6为第一液体输出管道，7为液态工质，8为第三金属块，9为热浴锅，10为片状热电偶测温仪，11为待测液体池，12为对比液体池，13为第二金属块，14为第四金属块，15为第二液体注射器，16为第二液体输入管道，17为第二液体输出管道。Fig. 1 is the structural representation of a kind of constant-temperature heat bath device based on the transient planar heat source method to measure liquid thermal conductivity described in specific embodiment 1; Among Fig. 1, 1 is a computer, 2 is a liquid injector, 3 is a liquid input pipeline, 4 1 is the first metal block, 5 is the probe, 6 is the first liquid output pipe, 7 is the liquid working medium, 8 is the third metal block, 9 is the heat bath, 10 is the sheet thermocouple thermometer, 11 is the waiting 12 is a comparison liquid pool, 13 is a second metal block, 14 is a fourth metal block, 15 is a second liquid injector, 16 is a second liquid input pipeline, and 17 is a second liquid output pipeline.
本实施方式的优点：The advantage of this implementation mode:
一、本实施方式将液态工质7加入到热浴锅9中，测量温度可高达200℃，充分利用瞬态平面热源法标准聚酰亚胺探头的耐热性能，以测量液体材料在较高温度下的导热特性；并且本实施方式采用对比装置，通过对比能够准确获得封闭的待测液体池11池内待测液体的温度，精确的热控以保证加热结束液体温度达到热浴锅9设定的温度；同时，本实施方式的整个加热过程人为可控，灵敏性高；可以了解待测液体温度何时到达设定温度，有效减小等待时间，大大加快实验周期，同时也增加实验的可靠性。1. In this embodiment, the liquid working medium 7 is added to the heat bath 9, and the measurement temperature can be as high as 200°C. The heat resistance of the standard polyimide probe of the transient plane heat source method is fully utilized to measure the liquid material at a higher temperature. thermal conductivity at high temperature; and the present embodiment adopts a comparison device, which can accurately obtain the temperature of the liquid to be measured in the closed liquid pool 11 to be measured by comparison, and accurate thermal control is to ensure that the temperature of the liquid at the end of heating reaches the setting of the heat bath 9 At the same time, the entire heating process of this embodiment is artificially controllable and highly sensitive; it can know when the temperature of the liquid to be tested reaches the set temperature, effectively reducing the waiting time, greatly speeding up the experiment cycle, and also increasing the reliability of the experiment sex.
本实施方式的使用方法和原理：The usage method and principle of this embodiment:
本实施方式通过将液态工质7加入到热浴锅9中，将第一金属块4、第二金属块13、第三金属块8和第四金属块14置于在液态工质7中；第一金属块4、第二金属块13、第三金属块8和第四金属块14的大小、形状和材质均相同，且封闭的待测液体池11和封闭的对比液体池12的尺寸相同；使用第一液体注射器2将待测液体通过第一液体输入管道3注入到封闭的待测液体池11中，探头5设置在封闭的待测液体池11中，且与计算机1相连接，且计算机1内安装了Hot Disk热常数分析软件；使用第二液体注射器15将相同体积的待测液体通过第二液体输入管道16注入到封闭的对比液体池12中，片状热电偶测温仪10测量封闭的对比液体池12内待测液体的温度，由于第一金属块4、第二金属块13、第三金属块8和第四金属块14的大小、形状和材质均相同，且封闭的待测液体池11和封闭的对比液体池12的尺寸相同；且第一金属4第二金属块13、第三金属块8和第四金属块14置于在液态工质7中，加热条件相同，可以等效的认为封闭的对比液体池12内待测液体的温度与封闭的待测液体池11内待测液体的温度相同，因此，可以通过片状热电偶测温仪10测得的封闭的对比液体池12内待测液体的温度来确定封闭的待测液体池11内待测液体的温度，已知封闭的待测液体池11内待测液体的具体温度，开始试验，计算机1给探头5施加额定电流对待测液体进行加热，同时探头5为hotdisk探头，表面可以产生温升，电阻增加，电信号反馈回计算机1；通过材料电阻与温度的对应关系，得到温度随时间的变化曲线，通过对曲线的拟合与计算，得出待测液体的导热系数和热扩散系数。In this embodiment, by adding the liquid working medium 7 into the heating bath 9, the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are placed in the liquid working medium 7; The size, shape and material of the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are all the same, and the closed test liquid pool 11 and the closed comparison liquid pool 12 have the same size ; Use the first liquid injector 2 to inject the liquid to be tested into the closed liquid pool 11 to be tested through the first liquid input pipeline 3, the probe 5 is arranged in the closed liquid pool 11 to be tested, and is connected to the computer 1, and The Hot Disk thermal constant analysis software is installed in the computer 1; Use the second liquid injector 15 to inject the liquid to be tested of the same volume into the closed comparison liquid pool 12 through the second liquid input pipeline 16, and the plate thermocouple thermometer 10 Measure the temperature of the liquid to be measured in the closed comparison liquid pool 12, because the size, shape and material of the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are all the same, and the closed The size of the liquid pool 11 to be tested and the closed comparison liquid pool 12 are the same; and the first metal 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are placed in the liquid working medium 7, and the heating conditions are the same , it can be equivalently considered that the temperature of the liquid to be measured in the closed comparison liquid pool 12 is the same as the temperature of the liquid to be measured in the closed liquid pool 11 to be tested, therefore, the closed temperature measured by the sheet thermocouple thermometer 10 The temperature of the liquid to be measured in the liquid pool 12 is compared to determine the temperature of the liquid to be measured in the closed liquid pool to be tested 11, the specific temperature of the liquid to be measured in the closed liquid pool to be measured 11 is known, and the test is started, and the computer 1 gives The probe 5 applies a rated current to heat the liquid to be tested. At the same time, the probe 5 is a hotdisk probe. The surface can generate temperature rise and resistance increase, and the electrical signal is fed back to the computer 1. Through the corresponding relationship between material resistance and temperature, the temperature change curve with time can be obtained. , through the fitting and calculation of the curve, the thermal conductivity and thermal diffusivity of the liquid to be measured are obtained.
本实施方式可获得一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置。In this embodiment, a constant temperature heat bath device for measuring the thermal conductivity of a liquid based on the transient plane heat source method can be obtained.
具体实施方式二：本实施方式与具体实施方式一不同点是：所述的探头5为hotdisk探头7577或hotdisk探头5465。其他步骤与具体实施方式一相同。Embodiment 2: This embodiment differs from Embodiment 1 in that: the probe 5 is a hotdisk probe 7577 or a hotdisk probe 5465 . Other steps are the same as in the first embodiment.
具体实施方式三：本实施方式与具体实施方式一或二之一不同点是：所述的第一金属块4、第二金属块13、第三金属块8和第四金属块14的大小、形状和材质均相同，且材质为铝合金或铜。其他步骤与具体实施方式一或二相同。Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is: the size of the first metal block 4 , the second metal block 13 , the third metal block 8 and the fourth metal block 14 , The shapes and materials are the same, and the materials are aluminum alloy or copper. Other steps are the same as those in Embodiment 1 or 2.
具体实施方式四：本实施方式与具体实施方式一至三之一不同点是：所述的封闭的待测液体池11和封闭的对比液体池12的尺寸相同。其他步骤与具体实施方式一至三相同。Embodiment 4: This embodiment differs from Embodiments 1 to 3 in that: the closed test liquid pool 11 and the closed comparison liquid pool 12 have the same size. Other steps are the same as those in Embodiments 1 to 3.
具体实施方式五：本实施方式与具体实施方式一至四之一不同点是：所述的液态工质7为水或油。其他步骤与具体实施方式一至四相同。Embodiment 5: The difference between this embodiment and Embodiment 1 to Embodiment 4 is that the liquid working medium 7 is water or oil. Other steps are the same as those in Embodiments 1 to 4.
具体实施方式六：本实施方式与具体实施方式一至五之一不同点是：所述的第一液体输入管道3和第二液体输入管道16的材质相同，且材质为塑料管或橡胶管。其他步骤与具体实施方式一至五相同。Embodiment 6: This embodiment differs from Embodiments 1 to 5 in that: the materials of the first liquid input pipe 3 and the second liquid input pipe 16 are the same, and the materials are plastic tubes or rubber tubes. Other steps are the same as those in Embodiments 1 to 5.
具体实施方式七：本实施方式与具体实施方式一至六之一不同点是：所述的第一液体输出管道6和第二液体输出管道17的材质相同，且材质为塑料管或橡胶管。其他步骤与具体实施方式一至六相同。Embodiment 7: This embodiment differs from Embodiment 1 to Embodiment 6 in that: the material of the first liquid output pipe 6 and the second liquid output pipe 17 is the same, and the material is a plastic tube or a rubber tube. Other steps are the same as those in Embodiments 1 to 6.
具体实施方式八：本实施方式与具体实施方式一至七之一不同点是：所述的使用定位销对第一金属块4和第二金属块13进行定位。其他步骤与具体实施方式一至七相同。Embodiment 8: This embodiment differs from Embodiments 1 to 7 in that: the positioning pins are used to position the first metal block 4 and the second metal block 13 . Other steps are the same as those in Embodiments 1 to 7.
具体实施方式九：本实施方式与具体实施方式一至八之一不同点是：所述的使用定位销对第三金属块8和第四金属块14进行定位。其他步骤与具体实施方式一至八相同。Embodiment 9: This embodiment differs from Embodiments 1 to 8 in that: the positioning pins are used to position the third metal block 8 and the fourth metal block 14 . Other steps are the same as those in Embodiments 1 to 8.
具体实施方式十：本实施方式与具体实施方式一至九之一不同点是：所述的计算机1内安装了Hot Disk热常数分析软件。其他步骤与具体实施方式一至九相同。Specific embodiment ten: the difference between this embodiment and specific embodiment one to nine is: the Hot Disk thermal constant analysis software is installed in the described computer 1. Other steps are the same as those in Embodiments 1 to 9.
采用以下试验验证本发明的有益效果：Adopt following test to verify beneficial effect of the present invention:
试验一：一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置包括计算机1、第一液体注射器2、第一液体输入管道3、第一金属块4、探头5、第一液体输出管道6、液态工质7、第三金属块8、热浴锅9、片状热电偶测温仪10、第二金属块13、第四金属块14、第二液体注射器15、第二液体输入管道16和第二液体输出管道17；Experiment 1: A constant temperature heat bath device for measuring liquid thermal conductivity based on the transient plane heat source method includes a computer 1, a first liquid injector 2, a first liquid input pipe 3, a first metal block 4, a probe 5, and a first liquid output Pipeline 6, liquid working medium 7, third metal block 8, heat bath 9, sheet thermocouple thermometer 10, second metal block 13, fourth metal block 14, second liquid injector 15, second liquid input pipe 16 and second liquid output pipe 17;
所述的热浴锅9内装有液态工质7，第一金属块4、第二金属块13、第三金属块8和第四金属块14均置于在液态工质7中；A liquid working medium 7 is housed in the heat bath 9, and the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are all placed in the liquid working medium 7;
所述的第一金属块4、第二金属块13、第三金属块8和第四金属块14的表面上均开有等大的凹槽；第一金属块4和第二金属块13表面上开设的凹槽组成封闭的待测液体池11；The surfaces of the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 are provided with grooves of equal size; the surfaces of the first metal block 4 and the second metal block 13 are The groove opened on the top forms a closed liquid pool 11 to be tested;
所述的第一液体注射器2通过第一液体输入管道3与封闭的待测液体池11的下端相连通；封闭的待测液体池11的上端与第一液体输出管道6的一端与相连通，第一液体输出管道6的另一端穿出热浴锅9，与大气相连通；探头5设置在液体池11的内部，且与计算机1相连通；The first liquid injector 2 communicates with the lower end of the closed test liquid pool 11 through the first liquid input pipe 3; the upper end of the closed test liquid pool 11 communicates with one end of the first liquid output pipe 6, The other end of the first liquid output pipe 6 passes through the heating bath 9 and communicates with the atmosphere; the probe 5 is arranged inside the liquid pool 11 and communicates with the computer 1;
所述的第三金属块8和第四金属块14表面上开设的凹槽组成封闭的对比液体池12；第二液体注射器15通过第二液体输入管道16与封闭的对比液体池12的下端相连通；封闭的对比液体池12的上端与第二液体输出管道17的一端相连通，第二液体输出管道17的另一端穿出热浴锅9，与大气相连通；片状热电偶测温仪10的探头置于封闭的对比液体池12中。The grooves provided on the surface of the third metal block 8 and the fourth metal block 14 form a closed comparison liquid pool 12; the second liquid injector 15 is connected to the lower end of the closed comparison liquid pool 12 through the second liquid input pipeline 16 Pass; The upper end of the closed comparison liquid pool 12 is connected with one end of the second liquid output pipeline 17, and the other end of the second liquid output pipeline 17 passes through the heat bath 9 and communicates with the atmosphere; the plate thermocouple thermometer The probe of 10 is placed in the closed comparison liquid pool 12.
本试验一种基于瞬态平面热源法测量液体导热系数的恒温热浴装置水平放置；In this test, a constant temperature heat bath device based on the transient plane heat source method to measure the thermal conductivity of liquid is placed horizontally;
本试验所述的探头5为聚酰亚胺探头为hotdisk探头7577；The probe 5 described in this test is a polyimide probe and a hotdisk probe 7577;
本试验所述的第一金属块4、第二金属块13、第三金属块8和第四金属块14的大小、形状和材质均相同，且材质为铜；The size, shape and material of the first metal block 4, the second metal block 13, the third metal block 8 and the fourth metal block 14 described in this test are all the same, and the material is copper;
本试验所述的封闭的待测液体池11和封闭的对比液体池12的尺寸相同；The sealed test liquid pool 11 described in this test is the same size as the closed contrast liquid pool 12;
本试验所述的液态工质7为水；The liquid working medium 7 described in this test is water;
本试验所述的第一液体输入管道3和第二液体输入管道16的材质相同，且材质为塑料管；The material of the first liquid input pipeline 3 described in this test and the second liquid input pipeline 16 is the same, and the material is a plastic pipe;
本试验所述的第一液体输出管道6和第二液体输出管道17的材质相同，且材质为塑料管；The material of the first liquid output pipeline 6 and the second liquid output pipeline 17 described in this test is the same, and the material is a plastic pipe;
本试验所述的使用定位销对第一金属块4和第二金属块13进行定位；The first metal block 4 and the second metal block 13 are positioned using positioning pins described in this test;
本试验所述的使用定位销对第三金属块8和第四金属块14进行定位；The third metal block 8 and the fourth metal block 14 are positioned using positioning pins described in this test;
本试验所述的计算机1内安装了Hot Disk热常数分析软件；Hot Disk thermal constant analysis software is installed in the computer 1 described in this test;
本试验所述的封闭的待测液体池11和封闭的对比液体池12中均注入水；Water is all injected in the closed test liquid pool 11 described in this test and the closed contrast liquid pool 12;
本试验热浴锅9的设定温度为70℃，热浴锅9开始加热54min时片状热电偶测温仪10到热浴锅9设定的温度，并且片状热电偶测温仪10的温度保持10min以上都不进行变化，而传统的的方法基于热平衡理论获得平衡温度，由于没有量化的测试手段，需要长时间保持加热状态，以确保样品与环境达到热平衡；一般采用保持2h水浴后才能进行试验，且传统的方法不知道待测液体是否准确达到了设定的温度，缺乏准确的被测试样温度监测手段。本试验的整个加热过程人为可控，灵敏性高；可以了解待测液体温度何时到达设定温度，有效减小等待时间，加快实验周期，确保试验的可靠性。The set temperature of the heat bath 9 in this test is 70°C. When the heat bath 9 starts to heat for 54 minutes, the sheet thermocouple thermometer 10 reaches the temperature set by the heat bath 9, and the temperature of the sheet thermocouple thermometer 10 The temperature does not change for more than 10 minutes, and the traditional method is based on the thermal balance theory to obtain the equilibrium temperature. Since there is no quantitative test method, it is necessary to keep the heating state for a long time to ensure that the sample and the environment reach thermal equilibrium; The test is carried out, and the traditional method does not know whether the liquid to be tested has reached the set temperature accurately, and lacks an accurate means of monitoring the temperature of the tested sample. The entire heating process of this test is artificially controllable and highly sensitive; it can know when the temperature of the liquid to be tested reaches the set temperature, effectively reducing the waiting time, speeding up the test cycle, and ensuring the reliability of the test.
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