CN1912557B - Small inert IE grade platinum resistance thermometer - Google Patents
Small inert IE grade platinum resistance thermometer Download PDFInfo
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- CN1912557B CN1912557B CN2006100529311A CN200610052931A CN1912557B CN 1912557 B CN1912557 B CN 1912557B CN 2006100529311 A CN2006100529311 A CN 2006100529311A CN 200610052931 A CN200610052931 A CN 200610052931A CN 1912557 B CN1912557 B CN 1912557B
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Abstract
本发明涉及一种用于核电厂的小惰性IE级铂电阻温度计。小惰性IE级铂电阻温度计，其包括不锈钢接线盒、保护管、螺栓、铠装铂电阻体、测量端，所述的测量端内铂电阻与测量端外壳间填充热传导性好的金属。本发明的优点在于：通过特殊的结构，使其既能承受高压、高温、辐照和冷却剂高速冲击及其他意外苛刻条件的使用，而且热响应时间小，在≤1.5s～≤2.4s间，完全符合核电厂的苛刻要求，产品经测试完全符合使用要求。
The invention relates to a small inert class IE platinum resistance thermometer for nuclear power plants. A small inert IE-grade platinum resistance thermometer, which includes a stainless steel junction box, a protective tube, bolts, an armored platinum resistance body, and a measuring end. The metal with good thermal conductivity is filled between the platinum resistance inside the measuring end and the outer shell of the measuring end. The advantage of the present invention is: through the special structure, it can withstand the use of high pressure, high temperature, radiation, high-speed impact of coolant and other unexpected severe conditions, and the thermal response time is small, between ≤1.5s～≤2.4s , in full compliance with the stringent requirements of nuclear power plants, the product has been tested in full compliance with the requirements of use.
Description
技术领域technical field
本发明涉及一种铂电阻温度计，特别涉及一种用于核电厂的小惰性IE级铂电阻温度计。The invention relates to a platinum resistance thermometer, in particular to a small inert IE grade platinum resistance thermometer used in nuclear power plants.
背景技术Background technique
铂电阻温度计，是一种较好的温度测量和控制工具，其广泛用于石油、化工、化纤、电力、机械、原子能、航空航天等现代化设备中，可实现-200℃-+600℃温度范围内检测温度或自动调节温度。Platinum resistance thermometer is a better temperature measurement and control tool, which is widely used in modern equipment such as petroleum, chemical industry, chemical fiber, electric power, machinery, atomic energy, aerospace, etc., and can achieve a temperature range of -200°C-+600°C Internal temperature detection or automatic temperature adjustment.
铂电阻温度计用于核电厂等领域时，在核反应堆功率控制系统、核反应堆保护系统和热工控制系统提供冷却剂环路冷、热段温度、平均温度、温差等相应的温度信号，属于核电厂核岛使用的核安全1级设备，它要求：在高压、高温、辐照和冷却剂高速冲击的正常工况条件下安全运行40年，并且能够承受下述特殊工况的冲击：失水事故(LOCA)工况和主蒸气管道破裂事故(MSLB)工况、而且要符合核安全1级(CLASS)和安全停堆地震(SSE)级要求，还要承受核岛累计辐照剂量：2.8×105GY的腐蚀。同时，其要求热响应时间短，在≤1.5s～≤2.4s之间，要比常用铂电阻温度计的热响应时间缩短10～23倍。因此要求铂电阻温度计具有超超高压机械强度，同时具备温度测量时热响应时间≤1.5s～≤2.4s，也就是要达到小惰性IE级铂电阻温度计的要求。一般常用的铂热电阻温度计，由于铠装铂热电阻的头部由氧化镁隔离，其热响应时间短，为：≥24s～≥35s之间。因此，现有的铂电阻温度计应用到这一领域时就存在着强度不够、热响应时间太长的缺点，根本不能满足核电厂的实际使用需要。When platinum resistance thermometers are used in nuclear power plants and other fields, they provide corresponding temperature signals such as coolant loop cold and hot section temperatures, average temperatures, and temperature differences in nuclear reactor power control systems, nuclear reactor protection systems, and thermal control systems. The nuclear safety level 1 equipment used by the island requires safe operation for 40 years under the normal conditions of high pressure, high temperature, radiation and high-speed coolant impact, and can withstand the impact of the following special conditions: loss of water accident ( LOCA) working conditions and main steam pipeline rupture accident (MSLB) working conditions, and must meet the requirements of nuclear safety level 1 (CLASS) and safe shutdown earthquake (SSE), and must also bear the cumulative radiation dose of the nuclear island: 2.8×105GY of corrosion. At the same time, it requires a short thermal response time, between ≤1.5s and ≤2.4s, which is 10 to 23 times shorter than that of commonly used platinum resistance thermometers. Therefore, platinum resistance thermometers are required to have ultra-ultra-high pressure mechanical strength, and at the same time have a thermal response time of ≤1.5s to ≤2.4s during temperature measurement, that is, to meet the requirements of small inert IE grade platinum resistance thermometers. Generally commonly used platinum thermal resistance thermometers, because the head of the armored platinum thermal resistance is isolated by magnesium oxide, its thermal response time is short: ≥24s～≥35s. Therefore, when the existing platinum resistance thermometers are applied to this field, they have the disadvantages of insufficient strength and too long thermal response time, and cannot meet the practical needs of nuclear power plants at all.
发明内容Contents of the invention
本发明所要解决的技术问题是克服现有技术的上述缺点而提供一种小惰性IE级铂电阻温度计，使其既能承受特殊工况的使用、热响应时间又很短。The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a small inert IE grade platinum resistance thermometer, which can withstand the use of special working conditions and has a short thermal response time.
本发明解决上述技术问题所采用的技术方案为：The technical solution adopted by the present invention to solve the problems of the technologies described above is:
小惰性IE级铂电阻温度计，其包括不锈钢接线盒、保护管、螺栓、铠装铂电阻体、带铂电阻的测量端，其特征在于：所述的测量端内铂电阻与测量端外壳间填充热传导性好的金属。A small inert IE-grade platinum resistance thermometer, which includes a stainless steel junction box, a protective tube, bolts, an armored platinum resistance body, and a measuring end with a platinum resistance. Metal with good thermal conductivity.
小惰性IE级铂电阻温度计比普通的铂电阻温度计热响应时间要缩短10～23倍，同时要保持测量端有足够的机械强度，这是本发明矛盾的两个方面。一般情况下，要提高测量效率(缩短热响应时间)，势必减小测量端保护套管的几何尺寸，如果以相同比例缩小测量端的外保护套管直径来达到热响应时间，这显然因没有空间而无法实现；因此如何在保证安全使用寿命的前提下达到热响应时间的技术要求便是本发明的核心所在。The thermal response time of the small inert IE-grade platinum resistance thermometer is 10-23 times shorter than that of ordinary platinum resistance thermometers, and at the same time, sufficient mechanical strength should be maintained at the measuring end, which are two contradictory aspects of the present invention. In general, to improve measurement efficiency (shorten thermal response time), it is necessary to reduce the geometric size of the protective sleeve at the measuring end. If the diameter of the outer protective sleeve at the measuring end is reduced in the same proportion to achieve the thermal response time, obviously because there is no space And can't realize; Therefore how to reach the technical requirement of thermal response time under the premise of guaranteeing safe service life is the core of the present invention.
本发明的关键之处在于：通过改变铂电阻温度计的测量端的结构，巧妙的解决了铂电阻温度计同时满足耐苛刻特殊工况和热响应时间小的这一对矛盾。The key point of the present invention is that by changing the structure of the measuring end of the platinum resistance thermometer, the contradiction that the platinum resistance thermometer meets harsh special working conditions and has a short thermal response time is cleverly solved.
与现有技术相比，本发明的优点在于：通过特殊的结构，使其既能在高压、高温、辐照和冷却剂高速冲击及其他意外苛刻条件下的使用，而且热响应时间小，在≤1.5s～≤2.4s间。Compared with the prior art, the present invention has the advantages of: through the special structure, it can be used under high pressure, high temperature, irradiation, high-speed impact of coolant and other unexpected severe conditions, and the thermal response time is small, and it can be used in ≤1.5s～≤2.4s.
小惰性IE级铂电阻温度计产品完成后根据核工程研究设计院的PC2-TI07-TA设备规范书，以及IEEE323-83(R96)核电厂IE级电器设备的考核标准和IEEE-344-87(R93))IE级设备抗震鉴定的推荐实施方法等进行质量鉴定，完全合格后又委托第三方国内权威实验室进行鉴定，并已由其出具签定合格证书，产品完全符合要求。After the completion of the small inert IE grade platinum resistance thermometer product, it is in accordance with the PC2-TI07-TA equipment specification book of the Nuclear Engineering Research and Design Institute, as well as the assessment standard of IE grade electrical equipment in nuclear power plants of IEEE323-83 (R96) and IEEE-344-87 (R93) )) The recommended implementation method of IE-level equipment seismic appraisal, etc. conduct quality appraisal, and then entrust a third-party domestic authoritative laboratory to conduct appraisal after it is fully qualified, and has issued a signed certificate of qualification by it, and the product fully meets the requirements.
附图说明Description of drawings
图1为本发明实施例的小惰性IE级铂电阻温度计结构示意图。Fig. 1 is a schematic structural diagram of a small inert IE grade platinum resistance thermometer according to an embodiment of the present invention.
图2为图1的A-A剖视图。Fig. 2 is a sectional view along line A-A of Fig. 1 .
具体实施方式Detailed ways
以下结合附图实施例对本发明作进一步详细描述。The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
如图1所示，小惰性IE级铂电阻温度计，其包括不锈钢接线盒1、保护管2、固定螺栓3、铠装铂电阻体4、测量端5、铂电阻6，固定螺栓3与外保护套管2焊接，测量端5内铂电阻6与测量端外壳8间填充热传导性好的金属7。As shown in Figure 1, a small inert IE grade platinum resistance thermometer includes a stainless steel junction box 1, a protective tube 2, a fixing bolt 3, an armored platinum resistance body 4, a measuring terminal 5, a platinum resistance thermometer 6, a fixing bolt 3 and an outer protection The casing 2 is welded, and the metal 7 with good thermal conductivity is filled between the platinum resistance 6 in the measuring end 5 and the outer casing 8 of the measuring end.
上述热传导性好的金属7为银铜合金等。The above-mentioned metal 7 having good thermal conductivity is silver-copper alloy or the like.
上述铠装铂电阻体4为双芯三线，如图2所示，直径为Ф4.5mm～Ф5mm，长度按安装的场合决定。The above-mentioned armored platinum resistance body 4 is a double-core three-wire, as shown in FIG. 2 , with a diameter of Ф4.5 mm to Ф5 mm, and the length is determined according to the installation occasion.
上述接线盒1为防爆型不锈钢接线盒1，双芯三线制接口。The above junction box 1 is an explosion-proof stainless steel junction box 1 with a two-core three-wire interface.
上述保护套管2，根据不同规格和技术要求，确定具体尺寸和材料，固定螺栓3与测温连按口密封连接。The specific size and material of the above-mentioned protective sleeve 2 are determined according to different specifications and technical requirements, and the fixing bolt 3 is sealed and connected with the temperature measuring connector.
上述选择测量端5的直径最好为Ф6mm～Ф8mm之间。The diameter of the above-mentioned selected measuring end 5 is preferably between Ф6 mm and Ф8 mm.
上述铂电阻元件6最好为pt100，允差：±(0.30+0.0051|t|)℃(B级允差)、电阻温度系数为0.003851±0.000012。The above-mentioned platinum resistance element 6 is preferably pt100, tolerance: ±(0.30+0.0051|t|)°C (B-level tolerance), and temperature coefficient of resistance: 0.003851±0.000012.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100529311A CN1912557B (en) | 2006-08-15 | 2006-08-15 | Small inert IE grade platinum resistance thermometer |
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| CN2006100529311A CN1912557B (en) | 2006-08-15 | 2006-08-15 | Small inert IE grade platinum resistance thermometer |
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| CN1912557A CN1912557A (en) | 2007-02-14 |
| CN1912557B true CN1912557B (en) | 2011-09-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5163276B2 (en) * | 2007-05-18 | 2013-03-13 | アズビル株式会社 | Manufacturing method of platinum resistance thermometer |
| CN107887041A (en) * | 2017-11-07 | 2018-04-06 | 深圳中广核工程设计有限公司 | Nuclear power plant main pipeline temperature measuring equipment |
| CN109060017A (en) * | 2018-07-27 | 2018-12-21 | 扬中市南方矿用电器有限公司 | A kind of diesel mine locomotive protection monitor and monitoring method |
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| CN2409505Y (en) * | 1999-10-14 | 2000-12-06 | 陈俊健 | Environmental protection type mercury thermometer |
| US6341892B1 (en) * | 2000-02-03 | 2002-01-29 | George Schmermund | Resistance thermometer probe |
| CN1619267A (en) * | 2003-11-19 | 2005-05-25 | 众智光电科技股份有限公司 | Electronic thermometer |
| CN1657891A (en) * | 2005-03-04 | 2005-08-24 | 孙文忠 | Built-in armoured Pt thermal resistance and its manufacturing method |
| CN200955984Y (en) * | 2006-08-15 | 2007-10-03 | 孙文忠 | Small inertia IE level platinium resistance thermometer |
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- 2006-08-15 CN CN2006100529311A patent/CN1912557B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132979Y (en) * | 1992-06-15 | 1993-05-12 | 象山县石浦电力机具厂 | Steel-cored aluminium twisted line calorimeter |
| CN2409505Y (en) * | 1999-10-14 | 2000-12-06 | 陈俊健 | Environmental protection type mercury thermometer |
| US6341892B1 (en) * | 2000-02-03 | 2002-01-29 | George Schmermund | Resistance thermometer probe |
| CN1619267A (en) * | 2003-11-19 | 2005-05-25 | 众智光电科技股份有限公司 | Electronic thermometer |
| CN1657891A (en) * | 2005-03-04 | 2005-08-24 | 孙文忠 | Built-in armoured Pt thermal resistance and its manufacturing method |
| CN200955984Y (en) * | 2006-08-15 | 2007-10-03 | 孙文忠 | Small inertia IE level platinium resistance thermometer |
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Application publication date: 20070214 Assignee: Chaohong Nuclear Energy Technology Co.,Ltd. Assignor: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. Contract record no.: X2024980019490 Denomination of invention: Small inert IE grade platinum resistance thermometer Granted publication date: 20110928 License type: Common License Record date: 20241021 |
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Assignee: Chaohong Nuclear Energy Technology Co.,Ltd. Assignor: NINGBO AUQI AUTO-INSTRUMENT EQUIPMENT Co.,Ltd. Contract record no.: X2024980019490 Date of cancellation: 20251114 |