CN203100935U - Long rod platinum resistance thermometer calibrating device - Google Patents
Long rod platinum resistance thermometer calibrating device Download PDFInfo
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- CN203100935U CN203100935U CN 201320044592 CN201320044592U CN203100935U CN 203100935 U CN203100935 U CN 203100935U CN 201320044592 CN201320044592 CN 201320044592 CN 201320044592 U CN201320044592 U CN 201320044592U CN 203100935 U CN203100935 U CN 203100935U
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 198
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 99
- 238000009413 insulation Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 238000012935 Averaging Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
【技术领域】【Technical field】
本实用新型涉及一种校准装置，特别涉及一种长杆铂电阻温度计校准装置。The utility model relates to a calibration device, in particular to a long rod platinum resistance thermometer calibration device.
【背景技术】【Background technique】
长杆铂电阻是电站中冷凝器效率监控的重要仪器之一，主要用来测量冷凝器海水出口温度，该长杆铂电阻包含三个感温元件均匀于管套内，其长度可达3000mm，温度计管套外径约为6mm，并且冷凝器出口海水温度对冷凝器效率实验关系重大，因此对长杆铂电阻的校准工作也尤为必要。经调研目前国内各大计量院均无该长杆铂电阻的校验装置。The long-stem platinum resistance is one of the important instruments for monitoring the efficiency of the condenser in the power station. It is mainly used to measure the temperature of the seawater outlet of the condenser. The long-stem platinum resistance includes three temperature-sensing elements evenly placed in the pipe sleeve, and its length can reach 3000mm. The outer diameter of the thermometer sleeve is about 6mm, and the temperature of the seawater at the condenser outlet has a great relationship to the condenser efficiency experiment, so the calibration of the long-stem platinum resistance is also particularly necessary. After investigation, at present, none of the major metrology institutes in China has the calibration device for the long-stem platinum resistance thermometer.
【实用新型内容】【Content of utility model】
本实用新型的目的在于提供一种快速、准确、稳定的长杆铂电阻温度计校准装置，以解决上述技术问题。The purpose of the utility model is to provide a fast, accurate and stable long-stem platinum resistance thermometer calibration device to solve the above technical problems.
本实用新型的目的是通过以下技术方案实现的：The purpose of this utility model is achieved by the following technical solutions:
一种长杆铂电阻温度计校准装置，包括标定装置壳体、循环浴、测温仪和计算机；标定装置壳体的腔体内，均匀设置有若干根铂电阻温度计套管，铂电阻温度计套管一端与外界联通，另一端焊接在标定装置壳体的腔体内部；标定装置壳体的腔体内插有若干精密铂电阻温度计；所述若干精密铂电阻温度计连接测温仪；标定装置壳体上设有循环介质入口和循环介质出口；循环介质入口和循环介质出口连接循环浴；所述循环浴和测温仪连接计算机。A calibration device for a long-stem platinum resistance thermometer, comprising a housing of the calibration device, a circulating bath, a thermometer and a computer; in the cavity of the housing of the calibration device, several platinum resistance thermometer sleeves are evenly arranged, and one end of the sleeve of the platinum resistance thermometer is It communicates with the outside world, and the other end is welded inside the cavity of the calibration device housing; a number of precision platinum resistance thermometers are inserted in the cavity of the calibration device housing; the plurality of precision platinum resistance thermometers are connected to the thermometer; the calibration device housing is equipped with There are a circulating medium inlet and a circulating medium outlet; the circulating medium inlet and the circulating medium outlet are connected to a circulating bath; the circulating bath and a thermometer are connected to a computer.
本实用新型进一步的改进在于：标定装置壳体呈圆筒形，其包括由内之外依次设置的内层、保温层和外层；保温层的厚度不低于10mm；标定装置壳体的腔体有所述内层围绕形成。The further improvement of the utility model lies in that: the housing of the calibration device is cylindrical, which includes an inner layer, an insulation layer and an outer layer arranged sequentially from the inside to the outside; the thickness of the insulation layer is not less than 10mm; the cavity of the calibration device housing A body is formed around the inner layer.
本实用新型进一步的改进在于：铂电阻温度计套管的长度为3000mm，内径为10mm。The further improvement of the utility model is that: the length of the sleeve of the platinum resistance thermometer is 3000mm, and the inner diameter is 10mm.
本实用新型进一步的改进在于：铂电阻温度计套管的材质为紫铜。The further improvement of the utility model is that: the platinum resistance thermometer sleeve is made of red copper.
本实用新型进一步的改进在于：标定装置壳体的底部设有两个可调支撑架。The further improvement of the utility model is that: the bottom of the housing of the calibration device is provided with two adjustable support frames.
本实用新型进一步的改进在于：循环介质入口设置于标定装置壳体一端下部，循环介质出口设置于标定装置壳体另一端上部。The further improvement of the utility model is that: the inlet of the circulating medium is arranged at the lower part of one end of the housing of the calibration device, and the outlet of the circulating medium is arranged at the upper part of the other end of the housing of the calibration device.
本实用新型进一步的改进在于：被测长杆铂电阻温度计插于铂电阻温度计套管内，所述被测长杆铂电阻温度计连接所述测温仪。The further improvement of the utility model is that: the long-stem platinum resistance thermometer to be measured is inserted into the casing of the platinum resistance thermometer, and the long-stem platinum resistance thermometer to be measured is connected to the thermometer.
本实用新型进一步的改进在于：铂电阻温度计套管与被测长杆铂电阻温度计之间充有硅油或导热硅脂。The further improvement of the utility model lies in that: silicon oil or heat-conducting silicon grease is filled between the casing tube of the platinum resistance thermometer and the measured long rod platinum resistance thermometer.
本实用新型进一步的改进在于：所述若干精密铂电阻温度计包括第一精密铂电阻温度计、第二精密铂电阻温度计和第三精密铂电阻温度计；第一精密铂电阻温度计、第二精密铂电阻温度计和第三精密铂电阻温度计分别布置于标定装置壳体的循环介质入口处、循环介质出口处和中部。The further improvement of the utility model is that: the plurality of precision platinum resistance thermometers include a first precision platinum resistance thermometer, a second precision platinum resistance thermometer and a third precision platinum resistance thermometer; the first precision platinum resistance thermometer, the second precision platinum resistance thermometer and the third precision platinum resistance thermometer are respectively arranged at the inlet of the circulating medium, at the outlet of the circulating medium and in the middle of the calibration device housing.
本实用新型具有以下优点和有益效果：本实用新型解决了长杆铂电阻难以标定的问题。现有标定系统的稳定性大约在0.1℃，而且操作复杂，每次标定时需要把装置拆开，再次使用时还需要检查装置密封性。而且随着温度的变化，密封往往会泄露，存在密封性差的问题。本实用新型的稳定性在0.05℃之内，标定使用简单，只需要将长杆铂电阻插入到测温孔中。测温是通过布置在三个位置的精密铂电阻温度计进行，不仅能检测温度，还能检测装置温度场的稳定性。铂电阻标定的温度是三支精密铂电阻温度计平均后的温度，减少了误差，增加了系统的精度。另外，循环液体不与铂电阻进行直接的接触，减少了铂电阻被污染的可能性，提高了系统的可靠性。由于循环完全是在密闭的容器中进行，减少与外界环境接触，增加循环液体使用的寿命。本实用新型能够提高铂电阻标定的效率和精度，结合计算机实现铂电阻装置的自动化标定。The utility model has the following advantages and beneficial effects: the utility model solves the problem that the long rod platinum resistor is difficult to calibrate. The stability of the existing calibration system is about 0.1°C, and the operation is complicated. The device needs to be disassembled every time it is calibrated, and the sealing of the device needs to be checked when it is used again. Moreover, as the temperature changes, the seal tends to leak, and there is a problem of poor sealing. The stability of the utility model is within 0.05°C, and the calibration is simple to use, only needing to insert the long rod platinum resistance into the temperature measuring hole. The temperature measurement is carried out through precision platinum resistance thermometers arranged in three positions, which can not only detect the temperature, but also detect the stability of the temperature field of the device. The temperature calibrated by the platinum resistance thermometer is the average temperature of three precision platinum resistance thermometers, which reduces the error and increases the accuracy of the system. In addition, the circulating liquid does not directly contact the platinum resistor, which reduces the possibility of the platinum resistor being polluted and improves the reliability of the system. Since the circulation is completely carried out in a closed container, the contact with the external environment is reduced, and the service life of the circulating liquid is increased. The utility model can improve the efficiency and precision of the platinum resistance calibration, and realizes the automatic calibration of the platinum resistance device in combination with a computer.
【附图说明】【Description of drawings】
图1为本实用新型长杆铂电阻温度计校准装置的结构示意图；Fig. 1 is the structural representation of the long rod platinum resistance thermometer calibration device of the present invention;
图2为标定装置壳体的截面示意图。Fig. 2 is a schematic cross-sectional view of the housing of the calibration device.
【具体实施方式】【Detailed ways】
下面结合附图和具体实施例对本实用新型作进一步详细说明。Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.
请参阅图1及图2所示，本实用新型一种长杆铂电阻温度计校准装置，包括标定装置壳体5、循环浴7、测温仪8和计算机。Please refer to Fig. 1 and Fig. 2, a calibration device for a long-stem platinum resistance thermometer of the present invention includes a calibration device housing 5, a circulating bath 7, a thermometer 8 and a computer.
标定装置壳体5呈圆筒形，其包括由内之外依次设置的内层51、保温层52和外层53；保温层52的保温材料的导热系数应尽量低，以最大程度减少热损失，保温层52的厚度不低于10mm；保温层52可以采用发泡材料，使外界环境对内部的温度干扰尽可能小。标定装置壳体5的内层51围绕的腔体内，均匀设置有四根铂电阻温度计套管3（可根据实际排布效果调整数量），铂电阻温度计套管3一端与外界联通，可用来灌注硅油并插入铂电阻，另一端焊死在标定装置壳体5的腔体内部。因被测长杆铂电阻温度计的长度规格为2.5m、2.8m及2.9m，阻身外径为6mm，因此设置铂电阻温度计套管3的长度为3000mm、内径为10mm。内层51的材质为不锈钢，内壁光滑。The housing 5 of the calibration device is cylindrical, which includes an inner layer 51, an insulating layer 52 and an outer layer 53 arranged in sequence from the inside to the outside; the thermal conductivity of the insulating material of the insulating layer 52 should be as low as possible to minimize heat loss , the thickness of the insulation layer 52 is not less than 10 mm; the insulation layer 52 can be made of foaming material, so that the external environment interferes with the internal temperature as little as possible. In the cavity surrounded by the inner layer 51 of the housing 5 of the calibration device, four platinum resistance thermometer sleeves 3 are evenly arranged (the number can be adjusted according to the actual arrangement effect), and one end of the platinum resistance thermometer sleeves 3 communicates with the outside world and can be used for perfusion Silicone oil is inserted into the platinum resistor, and the other end is welded to the inside of the cavity of the calibration device housing 5 . Because the length specifications of the measured long rod platinum resistance thermometers are 2.5m, 2.8m and 2.9m, and the outer diameter of the resistance body is 6mm, the length of the platinum resistance thermometer sleeve 3 is set to be 3000mm and the inner diameter is 10mm. The material of the inner layer 51 is stainless steel, and the inner wall is smooth.
铂电阻温度计套管3采用紫铜材质，内径10mm，具体外径需考虑承压能力后确定。铂电阻温度计套管3内光滑，没有杂质，以防刮伤铂电阻，在具体使用的时候应在管套内灌充硅油，或在被测长杆铂电阻温度计上涂导热硅脂，以达到最佳的换热效果。Platinum resistance thermometer casing 3 is made of red copper, with an inner diameter of 10mm, and the specific outer diameter shall be determined after considering the pressure bearing capacity. The sleeve 3 of the platinum resistance thermometer is smooth and free of impurities, so as to prevent the platinum resistance from being scratched. In specific use, silicon oil should be filled in the sleeve, or thermal conductive silicone grease should be applied to the measured long-stem platinum resistance thermometer to achieve The best heat transfer effect.
标定装置壳体5的底部设有两个可调支撑架6，可调支撑架6为不锈钢材质；在进行长杆铂电阻温度计9校准前，应该调节两个可调支撑架6的高度，使得被测长杆铂电阻温度计9插入端位置较另一端高，以便向被检铂电阻温度计套3内灌充硅油。The bottom of the calibration device housing 5 is provided with two adjustable support frames 6, and the adjustable support frames 6 are made of stainless steel; before the long rod platinum resistance thermometer 9 is calibrated, the height of the two adjustable support frames 6 should be adjusted so that The position of the insertion end of the measured long rod platinum resistance thermometer 9 is higher than the other end, so that silicone oil can be filled into the tested platinum resistance thermometer cover 3 .
标定装置壳体5的腔体内插有第一精密铂电阻温度计21、第二精密铂电阻温度计22和第三精密铂电阻温度计23；该三个精密铂电阻温度计分别布置于标定装置壳体5的循环介质入口处、循环介质出口处和中部。标定装置壳体5的腔体上三只用来监控温度以及作为对比的标准铂电阻温度计满足《JJG160-2007标准铂电阻温度计检定规程》；其中两只对比用的精密铂电阻温度计的插入深度以标定装置壳体5的腔体整体中心为宜。第一精密铂电阻温度计21、第二精密铂电阻温度计22、第三精密铂电阻温度计23和插入铂电阻温度计套管3中的被测长杆铂电阻温度计9均连接至测温仪8。A first precision platinum resistance thermometer 21, a second precision platinum resistance thermometer 22 and a third precision platinum resistance thermometer 23 are inserted into the cavity of the calibration device housing 5; At the inlet of the circulating medium, at the outlet of the circulating medium and in the middle. The three standard platinum resistance thermometers used for temperature monitoring and comparison on the cavity of the calibration device housing 5 meet the "JJG160-2007 Standard Platinum Resistance Thermometer Verification Regulations"; the insertion depth of the two comparison precision platinum resistance thermometers is It is advisable to calibrate the center of the cavity of the device housing 5 as a whole. The first precision platinum resistance thermometer 21 , the second precision platinum resistance thermometer 22 , the third precision platinum resistance thermometer 23 and the long rod platinum resistance thermometer 9 inserted in the platinum resistance thermometer casing 3 are all connected to the thermometer 8 .
标定装置壳体5的一端下部设有循环介质入口1，另一端上部设有循环介质出口4；循环介质入口1和循环介质出口4连接循环浴7。循环介质出入口设置在标定装置壳体5的腔体两边不同位置，以达到腔体内倒流介质的最佳流动状态且循环泵需提供足够循环力以支持流体介质在腔体内有均匀流速。The lower part of one end of the calibration device housing 5 is provided with a circulating medium inlet 1, and the upper part of the other end is provided with a circulating medium outlet 4; the circulating medium inlet 1 and the circulating medium outlet 4 are connected to a circulating bath 7. The inlet and outlet of the circulating medium are set at different positions on both sides of the cavity of the calibration device housing 5 to achieve the best flow state of the backflow medium in the cavity and the circulating pump needs to provide sufficient circulation force to support the uniform flow rate of the fluid medium in the cavity.
循环浴7用来提供温度恒定的流体，并让流体在系统中循环，使标定装置内的温度波动小于0.01℃。The circulating bath 7 is used to provide a fluid with a constant temperature, and to circulate the fluid in the system, so that the temperature fluctuation in the calibration device is less than 0.01°C.
计算机连接测温仪8和循环浴7，以控制循环浴7中的循环泵工作，为系统提供稳定的恒温循环介质流动；通过采集测温仪8的数据判定被测长杆铂电阻温度计9是否合格。通过计算机可以实现自动的测量、校准和标定工作。The computer connects the thermometer 8 and the circulating bath 7 to control the circulation pump in the circulating bath 7 to provide a stable constant temperature circulating medium flow for the system; by collecting the data of the thermometer 8, it is determined whether the measured long-stem platinum resistance thermometer 9 is qualified. Automatic measurement, calibration and calibration can be realized by computer.
使用该套装置时，只需要将被测长杆铂电阻温度计9（2.7cm长）整只插入铂电阻温度计套管3，使循环浴7加热并循环流动介质于腔体内部，包裹住铂电阻温度计套管3，使其温度达到稳定。被测长杆铂电阻温度计9插入铂电阻温度计套管3前，可在被测长杆铂电阻温度计9外涂导热硅脂或在铂电阻温度计套管3内灌充适量硅油。整个系通过的循环浴7在腔体内形成循环流。当三只精密铂电阻温度计温度相差规定范围（±0.05℃）内，即可视标定装置壳体5内介质温度均匀，测量此时被测长杆铂电阻温度计9的电阻值以判定是否合格。When using this set of devices, it is only necessary to insert the measured long rod platinum resistance thermometer 9 (2.7cm long) into the sleeve 3 of the platinum resistance thermometer to heat the circulating bath 7 and circulate the flow medium inside the cavity to wrap the platinum resistance thermometer. Thermometer casing 3 to stabilize its temperature. Before the measured long-stem platinum resistance thermometer 9 is inserted into the platinum resistance thermometer sleeve 3 , the outer surface of the measured long-stem platinum resistance thermometer 9 can be coated with heat-conducting silicone grease or filled with an appropriate amount of silicone oil in the platinum resistance thermometer sleeve 3 . The circulating bath 7 passing through the whole system forms a circulating flow in the cavity. When the temperature difference of the three precision platinum resistance thermometers is within the specified range (±0.05°C), it can be seen that the temperature of the medium in the housing 5 of the calibration device is uniform, and the resistance value of the measured long-stem platinum resistance thermometer 9 at this time is measured to determine whether it is qualified.
本装置的稳定性在0.05℃之内，标定使用简单，只需要将被测长杆铂电阻温度计9插入到测温孔中。测温是通过布置在三个位置的精密铂电阻进行，不仅能检测温度，还能检测装置温度场的稳定性。被测长杆铂电阻温度计9标定的温度是三支精密铂电阻平均后的温度，减少了误差，增加了系统的精度。另外，循环液体不与铂电阻进行直接的接触，减少了铂电阻被污染的可能性，提高了系统的可靠性。由于循环完全是在密闭的容器中进行，减少与外界环境接触，增加循环液体使用的寿命。本发明能够提高铂电阻标定的效率和精度，结合计算机实现铂电阻装置的自动化标定。The stability of the device is within 0.05°C, and the calibration is easy to use, only needing to insert the measured long rod platinum resistance thermometer 9 into the temperature measuring hole. The temperature measurement is carried out through precision platinum resistors arranged in three positions, which can not only detect the temperature, but also detect the stability of the temperature field of the device. The calibrated temperature of the measured long-stem platinum resistance thermometer 9 is the average temperature of three precision platinum resistance thermometers, which reduces errors and increases the accuracy of the system. In addition, the circulating liquid does not directly contact the platinum resistor, which reduces the possibility of the platinum resistor being polluted and improves the reliability of the system. Since the circulation is completely carried out in a closed container, the contact with the external environment is reduced, and the service life of the circulating liquid is increased. The invention can improve the efficiency and precision of the platinum resistance calibration, and realize automatic calibration of the platinum resistance device in combination with a computer.
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施方式仅限于此，对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单的推演或替换，都应当视为属于本实用新型由所提交的权利要求书确定专利保护范围。The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiment of the utility model is limited to this. Under the premise of the new concept, some simple deduction or replacement can also be made, which should be regarded as belonging to the utility model and the patent protection scope is determined by the submitted claims.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942988A (en) * | 2016-05-17 | 2016-09-21 | 杭州欧汇科技有限公司 | Electronic thermometer and calibration method based on electronic thermometer |
| CN108827499A (en) * | 2018-07-30 | 2018-11-16 | 江苏方天电力技术有限公司 | A kind of temperature standard device of smokeless environment-friendly |
| CN110411592A (en) * | 2019-08-28 | 2019-11-05 | 广州计量检测技术研究院 | Standard thermometer measurement servicing unit and its application method |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942988A (en) * | 2016-05-17 | 2016-09-21 | 杭州欧汇科技有限公司 | Electronic thermometer and calibration method based on electronic thermometer |
| CN108827499A (en) * | 2018-07-30 | 2018-11-16 | 江苏方天电力技术有限公司 | A kind of temperature standard device of smokeless environment-friendly |
| CN110411592A (en) * | 2019-08-28 | 2019-11-05 | 广州计量检测技术研究院 | Standard thermometer measurement servicing unit and its application method |
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