CN104697579B - Cryogenic container comprehensive performance detecting device - Google Patents
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- 238000012360 testing method Methods 0.000 claims abstract description 59
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims 3
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000011056 performance test Methods 0.000 abstract description 4
- 238000009966 trimming Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 239000001307 helium Substances 0.000 description 14
- 229910052734 helium Inorganic materials 0.000 description 14
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 14
- 238000001514 detection method Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
本发明提供了一种低温容器综合性能检测设备，包括控制系统和真空泵组，控制系统分别与两个真空规、质谱仪和流量计信号连接，一个真空规连接质谱仪相，流量计与流量测量接口相连；真空泵组分别与第三真空阀门的一端和真空微调阀门的一端相连，真空微调阀门的另一端与第二真空规相连；第三真空阀门的另一端分别与第一真空阀门的一端和第二真空阀门的一端相连，第一真空阀门的另一端与标准漏孔相连，第二真空阀门的另一端与真空测量接口相连。该检测设备将国家规定的低温容器型式实验、定期检验和综合性能测试集成于一体，提高设备利用率，自动化测试，减少人为操作过程中的干扰，实现数据的自动储存和智能处理。
The invention provides a comprehensive performance testing device for a low-temperature container, which includes a control system and a vacuum pump group. The control system is respectively connected to two vacuum gauges, a mass spectrometer and a flowmeter for signals. The vacuum pump group is respectively connected with one end of the third vacuum valve and one end of the vacuum trimming valve, and the other end of the vacuum trimming valve is connected with the second vacuum gauge; the other end of the third vacuum valve is respectively connected with one end of the first vacuum valve and One end of the second vacuum valve is connected, the other end of the first vacuum valve is connected with the standard leakage hole, and the other end of the second vacuum valve is connected with the vacuum measurement interface. The testing equipment integrates the national low-temperature container type test, regular inspection and comprehensive performance test, improves equipment utilization, automates testing, reduces interference during human operation, and realizes automatic storage and intelligent processing of data.
Description
技术领域technical field
本发明属于低温容器检测技术领域，涉及一种低温容器检测设备，特别涉及一种低温容器综合性能检测设备，用于测试低温真空绝热容器的综合性能，可以完成低温容器真空度、漏率、漏放气速率、气体成分分析、静态蒸发率和检漏的测试。The invention belongs to the technical field of low-temperature container detection, relates to a low-temperature container detection equipment, in particular to a low-temperature container comprehensive performance detection equipment, which is used to test the comprehensive performance of low-temperature vacuum heat insulation containers, and can complete the vacuum degree, leakage rate, and leakage of low-temperature containers. Tests for outgassing rate, gas composition analysis, static evaporation rate and leak detection.
背景技术Background technique
随着国内低温液体行业的快速发展，尤其是LNG行业的发展，有力的推动了国内低温容器的发展，低温容器使用过程中需要进行型式实验和定检测设备工作。低温容器综合性能检测设备可以按照国标的要求完成低温容器综合性能测试，确保此类产品的使用安全和人生安全。With the rapid development of the domestic cryogenic liquid industry, especially the development of the LNG industry, the development of domestic cryogenic containers has been strongly promoted. During the use of cryogenic containers, type experiments and fixed testing equipment are required. The comprehensive performance testing equipment for cryogenic containers can complete the comprehensive performance test of cryogenic containers in accordance with the requirements of the national standard to ensure the safety of use and life of such products.
发明内容Contents of the invention
本发明的目的是提供一种低温容器综合性能检测设备，用于检测低温容器的真空度、漏率、漏放气速率、气体成分分析、静态蒸发率和检漏。The object of the present invention is to provide a comprehensive performance testing device for cryogenic containers, which is used for detecting the vacuum degree, leakage rate, leakage and degassing rate, gas composition analysis, static evaporation rate and leak detection of cryogenic containers.
为实现上述目的，本发明所采用的技术方案是：一种低温容器综合性能检测设备，包括控制系统和真空泵组，控制系统分别与第一真空规、第二真空规、质谱仪和流量计信号连接，第一真空规与质谱仪相连接，流量计与流量测量接口相连接；真空泵组分别与第三真空阀门的一端和真空微调阀门的一端相连接，第二真空规分别与真空微调阀门的另一端、第二真空阀门的一端、第三真空阀门的另一端和第一真空阀门的一端相连接；第一真空阀门的另一端与标准漏孔相连接，第二真空阀门的另一端与真空测量接口相连接；真空泵组、第三真空阀门和真空微调阀门的连接点与第一真空规和质谱仪的连接点相连接。In order to achieve the above object, the technical solution adopted in the present invention is: a comprehensive performance detection device for cryogenic containers, including a control system and a vacuum pump group, and the control system is connected with the first vacuum gauge, the second vacuum gauge, the mass spectrometer and the flowmeter signal respectively. The first vacuum gauge is connected to the mass spectrometer, the flowmeter is connected to the flow measurement interface; the vacuum pump group is connected to one end of the third vacuum valve and one end of the vacuum fine-tuning valve respectively, and the second vacuum gauge is connected to the vacuum fine-tuning valve respectively. The other end, one end of the second vacuum valve, the other end of the third vacuum valve and one end of the first vacuum valve are connected; the other end of the first vacuum valve is connected with the standard leak, and the other end of the second vacuum valve is connected with the vacuum The measuring interfaces are connected; the connection points of the vacuum pump group, the third vacuum valve and the vacuum fine-tuning valve are connected with the connection points of the first vacuum gauge and the mass spectrometer.
本发明检测设备与现有技术相比的优点在于：将国家规定的低温容器型式实验、定期检验和综合性能测试集成在一台仪器里，使用智能化的控制流程进行测试，减少人为操作过程中的干扰，实现数据的自动储存和智能处理。该检测设备集中了原来有多台测试设备完成的低温容器型式实验、定检检验和综合性能检测，提高了设备的利用率，实现了自动化测试，具有体积小，重量轻，操作简单等特点，同时也有效减小了测试人员的劳动强度。Compared with the prior art, the detection equipment of the present invention has the advantages of integrating the low-temperature container type experiment, periodic inspection and comprehensive performance test stipulated by the state into one instrument, using an intelligent control process for testing, and reducing the number of manual operations. Interference, automatic storage and intelligent processing of data. The testing equipment integrates the low-temperature container type test, regular inspection and comprehensive performance testing completed by multiple testing equipment, which improves the utilization rate of the equipment and realizes automatic testing. It has the characteristics of small size, light weight, and simple operation. At the same time, the labor intensity of testers is effectively reduced.
附图说明Description of drawings
图1是本发明检测设备的结构示意图。Fig. 1 is a schematic structural diagram of the detection equipment of the present invention.
图中：1.控制系统，2.第一真空规，3.标准漏孔，4.第二真空规，5.第一真空阀门，6.真空测量接口，7.第二真空阀门，8.流量测量接口，9.流量计，10.真空微调阀门，11.第三真空阀门，12.质谱仪，13.真空泵组。In the figure: 1. Control system, 2. First vacuum gauge, 3. Standard leak, 4. Second vacuum gauge, 5. First vacuum valve, 6. Vacuum measurement interface, 7. Second vacuum valve, 8. Flow measurement interface, 9. Flow meter, 10. Vacuum fine-tuning valve, 11. The third vacuum valve, 12. Mass spectrometer, 13. Vacuum pump group.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本发明检测设备，包括控制系统1和真空泵组13，控制系统1分别与第一真空规2、第二真空规4、质谱仪12和流量计9信号连接，第一真空规2与质谱仪12相连接，流量计9与流量测量接口8相连接；真空泵组13分别与第三真空阀门11的一端和真空微调阀门10的一端相连接，真空微调阀门10的另一端与第二真空规4相连接；第三真空阀门11的另一端分别与第一真空阀门5的一端和第二真空阀门7的一端相连接，第一真空阀门5的另一端与标准漏孔3相连接，第二真空阀门7的另一端与真空测量接口6相连接。控制系统1还分别与第一真空阀门5、第二真空阀门7、真空微调阀门10和第三真空阀门11信号连接。As shown in Figure 1, the detection equipment of the present invention includes a control system 1 and a vacuum pump group 13, and the control system 1 is respectively connected with the first vacuum gauge 2, the second vacuum gauge 4, the mass spectrometer 12 and the flowmeter 9 signals, and the first vacuum gauge The gauge 2 is connected with the mass spectrometer 12, the flowmeter 9 is connected with the flow measurement interface 8; the vacuum pump group 13 is respectively connected with one end of the third vacuum valve 11 and one end of the vacuum trimming valve 10, and the other end of the vacuum trimming valve 10 is connected with the The second vacuum gauge 4 is connected; the other end of the third vacuum valve 11 is connected with one end of the first vacuum valve 5 and one end of the second vacuum valve 7 respectively, and the other end of the first vacuum valve 5 is connected with the standard leak hole 3 The other end of the second vacuum valve 7 is connected to the vacuum measurement interface 6. The control system 1 is also respectively connected with the first vacuum valve 5 , the second vacuum valve 7 , the vacuum fine-tuning valve 10 and the third vacuum valve 11 in signal connection.
控制系统1，用于控制第一真空阀门5、第二真空阀门7、真空微调阀门10、第三真空阀门11、第一真空规2、第二真空规4、流量计9、质谱仪12和真空泵组13的开启与关闭；用于采集测试过程中第一真空规2、第二真空规4、流量计9和质谱仪12产生的测量数据，并根据测量数据计算相应的测量结果数据，将结果数据通过显示屏予以显示，同时存储采集的测量数据和计算得到的结果数据。The control system 1 is used to control the first vacuum valve 5, the second vacuum valve 7, the vacuum fine-tuning valve 10, the third vacuum valve 11, the first vacuum gauge 2, the second vacuum gauge 4, the flowmeter 9, the mass spectrometer 12 and The opening and closing of the vacuum pump group 13; used to collect the measurement data generated by the first vacuum gauge 2, the second vacuum gauge 4, the flow meter 9 and the mass spectrometer 12 during the test, and calculate the corresponding measurement result data according to the measurement data, and will The result data is displayed through the display screen, and the collected measurement data and calculated result data are stored at the same time.
对低温容器进行综合性能测试时：通过管道将真空测量接口6与待测试低温容器（被检件）真空夹层接口连接，启动真空泵组13对本检测设备内部及连接管道抽空，使达到一定的真空度后，进行真空度、漏率、漏放气速率、气体成分分析和检漏测试；具体测试流程如下：When performing a comprehensive performance test on a low-temperature container: connect the vacuum measurement interface 6 to the vacuum interlayer interface of the low-temperature container to be tested (the object to be tested) through a pipeline, and start the vacuum pump unit 13 to evacuate the interior of the testing device and the connecting pipeline to achieve a certain degree of vacuum Finally, carry out vacuum degree, leak rate, leak rate, gas composition analysis and leak detection test; the specific test process is as follows:
真空度测试中，首先进行连接管道漏放气速率的测量，测试中关闭第三真空阀门11，记录第二真空规4的数值，记录频次1次/min，记录5次，管道漏放气速率满足要求后，打开第三真空阀门11再次抽空，达到要求后，关闭第三真空阀门11，打开手动阀门（被测件）测量真空度，数值稳定后开始记录，记录频次1次/min，记录5次，经控制系统1计算后将结果显示在控制系统1的显示屏上。测试完成后打开第三真空阀门11，关闭手动阀门（被测件）。In the vacuum degree test, first measure the leakage and deflation rate of the connecting pipeline, close the third vacuum valve 11 during the test, record the value of the second vacuum gauge 4, record the frequency 1 time/min, record 5 times, the leakage and deflation rate of the pipeline After meeting the requirements, open the third vacuum valve 11 to evacuate again. After meeting the requirements, close the third vacuum valve 11, open the manual valve (the piece under test) to measure the vacuum degree, and start recording after the value is stable. The recording frequency is 1 time/min. 5 times, the result is displayed on the display screen of the control system 1 after calculation by the control system 1. After the test is completed, open the third vacuum valve 11 and close the manual valve (the piece under test).
漏率测量中，首先打开第一真空阀门5，启动质谱仪12，测试标准漏孔3的氦分压后，关闭质谱仪12；然后关闭第一真空阀门5，再启动质谱仪12，测试系统本底氦分压，关闭质谱仪12，计算仪器测试本底漏率；打开第一真空阀门5和手动阀门（被测件），启动质谱仪12，测试标准漏孔3的氦分压，关闭质谱仪12；然后关闭第一真空阀门5，启动质谱仪12，测试系统本底氦分压，关闭质谱仪12，计算系统测试本底漏率；给低温容器（被检件）裹好氦气罩，充入氦气（氦气罩内氦气浓度大于10%），待氦气充分扩散后，启动质谱仪12，测试系统氦分压，关闭质谱仪12，计算系统测试漏率；打开氦气罩，将氦气放掉，启动质谱仪12，复测系统氦分压，关闭质谱仪12，计算复测系统测试漏率，经控制系统1计算后将结果显示在控制系统1的显示屏上。测试完成后关闭手动阀门（被测件）。In the leak rate measurement, first open the first vacuum valve 5, start the mass spectrometer 12, after testing the helium partial pressure of the standard leak 3, close the mass spectrometer 12; then close the first vacuum valve 5, then start the mass spectrometer 12, and test the system Background helium partial pressure, close the mass spectrometer 12, calculate the background leak rate of the instrument test; open the first vacuum valve 5 and manual valve (tested piece), start the mass spectrometer 12, test the helium partial pressure of the standard leak hole 3, close Mass spectrometer 12; then close the first vacuum valve 5, start the mass spectrometer 12, test the background helium partial pressure of the system, close the mass spectrometer 12, calculate the system test background leak rate; wrap the cryogenic container (the object under inspection) with helium hood, filled with helium (the helium concentration in the helium hood is greater than 10%), after the helium is fully diffused, start the mass spectrometer 12, test the partial pressure of helium in the system, close the mass spectrometer 12, and calculate the system test leak rate; open the helium Gas hood, release the helium, start the mass spectrometer 12, retest the helium partial pressure of the system, close the mass spectrometer 12, calculate the test leak rate of the retest system, and display the result on the display screen of the control system 1 after calculation by the control system 1 superior. Close the manual valve (device under test) after the test is completed.
漏放气速率测试中，首先进行连接管道漏放气速率的测量，测试中关闭第三真空阀门11，记录第二真空规4的数值，记录频次1次/min，记录5次。管道漏放气速率满足要求后，打开第三真空阀门11再次抽空，达到要求后，关闭第三真空阀门11，打开手动阀门（被测件）测量真空度，数值稳定后开始记录，记录频次1次/min，记录5次，关闭手动阀门（被检件），打开第三真空阀门11，得到第一次测量真空度值；2小时后，关闭第三真空阀门11，记录第二真空规4的数值，记录频次1次/min，记录5次。管道漏放气速率满足要求后，打开第三真空阀门11再次抽空，达到要求后，关闭第三真空阀门11，打开手动阀门（被测件）测量真空度，数值稳定后开始记录，记录频次1次/min，记录5次，关闭手动阀门（被检件），打开第三真空阀门11，得到第二次测量真空度值；根据两次测得真空度计算出漏放气速率，将结果显示在控制系统1的显示屏上。In the gas leakage rate test, first measure the gas leakage rate of the connecting pipeline, close the third vacuum valve 11 during the test, record the value of the second vacuum gauge 4, the recording frequency is 1 time/min, and record 5 times. After the leakage rate of the pipeline meets the requirements, open the third vacuum valve 11 to evacuate again. After meeting the requirements, close the third vacuum valve 11, open the manual valve (the piece under test) to measure the vacuum degree, and start recording after the value is stable. The recording frequency is 1 times/min, record 5 times, close the manual valve (the inspected part), open the third vacuum valve 11, and obtain the first measured vacuum value; after 2 hours, close the third vacuum valve 11, and record the second vacuum gauge 4 The value of , the recording frequency is 1 time/min, and the recording is 5 times. After the leakage rate of the pipeline meets the requirements, open the third vacuum valve 11 to evacuate again. After meeting the requirements, close the third vacuum valve 11, open the manual valve (the piece under test) to measure the vacuum degree, and start recording after the value is stable. The recording frequency is 1 times/min, record 5 times, close the manual valve (the inspected part), open the third vacuum valve 11, and obtain the second measured vacuum value; calculate the leakage and deflation rate according to the two measured vacuum degrees, and display the result On the display of the control system 1.
气体成分分析测试过程中，关闭第三真空阀门11，打开手动阀门（被检件），调节真空微调阀门10，使得第一真空规2显示的数值稳定在5.0E-3Pa，启动质谱仪12进行测试，测试完成后将测得的气体成分、分压力、百分比显示测试结果在控制系统1的显示屏上。During the gas composition analysis test, close the third vacuum valve 11, open the manual valve (the object to be tested), adjust the vacuum fine-tuning valve 10, so that the value displayed by the first vacuum gauge 2 is stable at 5.0E-3Pa, start the mass spectrometer 12 to carry out Test, after the test is completed, the measured gas composition, partial pressure and percentage will be displayed on the display screen of the control system 1.
检漏测试过程中，关闭第三真空阀门11，打开手动阀门（被检件），调节真空微调阀门10，使得第一真空规2显示的数值稳定在5.0E-3Pa，启动质谱仪12进行测试，在测试连接管道或容器可能存在漏气的地方喷体积浓度为90%以上的氦气，观察显示屏显示数值的变化，确定漏点，关闭手动阀门（被检件），关闭质谱仪12，测试完成退出测试。During the leak detection test, close the third vacuum valve 11, open the manual valve (the piece to be tested), adjust the vacuum fine-tuning valve 10, so that the value displayed by the first vacuum gauge 2 is stable at 5.0E-3Pa, and start the mass spectrometer 12 for testing , spray helium with a volume concentration of more than 90% in places where there may be air leaks in the test connection pipes or containers, observe the changes in the values displayed on the display screen, determine the leak point, close the manual valve (the item under test), and turn off the mass spectrometer 12, Test complete exit test.
静态蒸发率测试中，将流量测试接口8与低温容器（被检件）放气接口连接在一起，启动气体质量流量计9，开始测量，控制系统1采集气体质量流量计9的数据，并在控制系统1的屏幕上显示，并通过控制系统1的运算，在控制系统1的屏幕上给出被检件静态蒸发率。In the static evaporation rate test, connect the flow test port 8 with the vent port of the cryogenic container (the object under test), start the gas mass flowmeter 9, and start the measurement. The control system 1 collects the data of the gas mass flowmeter 9, and It is displayed on the screen of the control system 1, and through the calculation of the control system 1, the static evaporation rate of the tested object is given on the screen of the control system 1.
在上述测试过程中，除应用的阀门进行正常的开启和关闭外，其余没有用到的阀门均处于关闭状态。During the above test process, except for the applied valves that are normally opened and closed, the rest of the unused valves are in the closed state.
完成所有测试后点击退出系统，待屏幕显示系统退出成功后断电。After completing all the tests, click to exit the system, and power off after the screen shows that the system exited successfully.
抽空系统提供测量环境，测量原件进行测量，电源保证检测设备装置内部用电原件的供电，控制系统控制所有用电部件的工作。最终通过各部件间的协调工作完成测试任务。The evacuation system provides the measurement environment, the measurement originals are used for measurement, the power supply ensures the power supply of the internal electrical components of the testing equipment, and the control system controls the work of all electrical components. Finally, the test task is completed through the coordination of various components.
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| CN110907151B (en) * | 2019-10-23 | 2021-09-03 | 张家港富瑞特种装备股份有限公司 | Method for measuring and calculating relationship between vacuum degree of low-temperature gas cylinder and daily evaporation rate and adsorption capacity |
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| CN1188543A (en) * | 1995-06-21 | 1998-07-22 | 莱博尔德真空技术有限责任公司 | Leak detector with back-up pump |
| CN101710017A (en) * | 2009-12-17 | 2010-05-19 | 中国航天科技集团公司第五研究院第五一○研究所 | Leak detection device and method of vacuum system |
| CN102721515A (en) * | 2012-06-27 | 2012-10-10 | 上海裕达实业公司 | Device and method for detecting whole satellite leak rate of satellite |
| CN202501952U (en) * | 2012-02-06 | 2012-10-24 | 江苏东方航天校准检测有限公司 | Portable multifunctional vacuum calibrating device |
| CN103308250A (en) * | 2013-04-24 | 2013-09-18 | 兰州空间技术物理研究所 | Device for detecting vacuum performance of low-temperature and heat-insulating pressure container |
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| JPH0560645A (en) * | 1991-09-05 | 1993-03-12 | Mitsubishi Electric Corp | Multi-purpose inspection and gas analysis apparatus for vacuum system |
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| CN1188543A (en) * | 1995-06-21 | 1998-07-22 | 莱博尔德真空技术有限责任公司 | Leak detector with back-up pump |
| CN101710017A (en) * | 2009-12-17 | 2010-05-19 | 中国航天科技集团公司第五研究院第五一○研究所 | Leak detection device and method of vacuum system |
| CN202501952U (en) * | 2012-02-06 | 2012-10-24 | 江苏东方航天校准检测有限公司 | Portable multifunctional vacuum calibrating device |
| CN102721515A (en) * | 2012-06-27 | 2012-10-10 | 上海裕达实业公司 | Device and method for detecting whole satellite leak rate of satellite |
| CN103308250A (en) * | 2013-04-24 | 2013-09-18 | 兰州空间技术物理研究所 | Device for detecting vacuum performance of low-temperature and heat-insulating pressure container |
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