CN101793585A - Device and method for detecting sealing property of sealing element - Google Patents

Device and method for detecting sealing property of sealing element Download PDF

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Publication number
CN101793585A
CN101793585A CN 201010140207 CN201010140207A CN101793585A CN 101793585 A CN101793585 A CN 101793585A CN 201010140207 CN201010140207 CN 201010140207 CN 201010140207 A CN201010140207 A CN 201010140207A CN 101793585 A CN101793585 A CN 101793585A
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CN
China
Prior art keywords
module
well heater
sealing
steam
raising plant
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CN 201010140207
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Chinese (zh)
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CN101793585B (en
Inventor
安源胜
马志刚
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苏州宝骅机械技术有限公司
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Priority to CN2010101402070A priority Critical patent/CN101793585B/en
Publication of CN101793585A publication Critical patent/CN101793585A/en
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Abstract

The invention discloses a device and a method for detecting the sealing property of a sealing element. The device comprises a steam generating device, wherein the steam generating device comprises a lower module with an inner cavity and an upper module arranged on the lower module; the sealing element to be detected is arranged between the upper module and the lower module; and a steam generating chamber is formed by enclosing the lower module, the sealing element to be detected and the upper module. The steam generating device also comprises an emptying valve, a heater, a weighing device and a control system, wherein the weighing device is used for weighing the steam generating device; the control system is used for acquiring and analyzing environment information in the steam generating chamber and controlling the heater to heat the inner cavity according to the analyzing result and comprises a computer and a sensor which is arranged in the steam generating chamber; and the computer is in signal connection with the sensor and the heater respectively. The device of the invention detects the weight change of the steam generating device within a certain period of time by adopting a weight loss method so as to calculate the leakage rate of the sealing element. The method is simple and feasible and the measuring result is accurate.

Description

Sealing property of sealing component pick-up unit and method
Technical field
The present invention relates under a kind of seal device for detecting performance and method, particularly high temperature, the high pressure steam condition pick-up unit and detection method to sealing property of sealing component.
Background technology
Usually when guaranteeing that seal uses under high temperature, high-pressure working condition, can accomplish that security seal does not have leakage, need carry out steam seal performance sampling Detection seal.Standard detecting method is the hydrops method, pick-up unit as shown in Figure 1:
This pick-up unit mainly is made up of steam generator 19, autoclave 13, tensimeter (sensor) 5, thermometer (sensor) 8, test samples 9, auxiliary seal ring 10, leak-off connection 18 and graduated cylinder 20.During detection, high temperature, high pressure steam enter autoclave 13 by steam generator 1, when seal (detecting style 9) generation leakage, the steam that leaks will accumulate in by in the space between test samples 9 and the auxiliary seal ring 10, flow in the graduated cylinder by leak-off connection 18, the staff is according to the sealing situation of this detection style 9 of the liquid determination of finally collecting in the graduated cylinder.It is feasible that this method of testing seems, but because the seal leakage amount is very little usually, and also can there be leakage in auxiliary seal ring usually, adding steam adheres at the tube wall of leak-off connection, cause in the graduated cylinder basic the collection seldom less than hydrops or the hydrops collected, therefore adopt hydrops method pick-up unit can't accurately measure the steam leakage of seal at all, particularly exist under the situation of micro leakage for seal.
Summary of the invention
The object of the invention provides a kind of simple and feasible detection method and pick-up unit, can accurately detect the slip of seal.
For achieving the above object, the technical solution used in the present invention is: a kind of sealing property of sealing component pick-up unit, it comprises: steam raising plant, described steam raising plant comprises lower module with inner chamber, is arranged on the upper module on the described lower module, seal to be detected is carried between described upper module and the lower module, surround the steam generation chamber between described lower module, seal to be detected and the described upper module, described steam raising plant also comprises the atmospheric valve that is used to get rid of the indoor air of described vapor generating cavity;
Well heater is used for the liquid heating indoor to described vapor generating cavity;
Weighing device is used for described steam raising plant is weighed;
Control system, be used to gather the indoor environmental information of described vapor generating cavity, described environmental information is analyzed, and control described well heater according to analysis result described inner chamber is heated, described control system comprises computing machine and is arranged on the interior sensor of described steam chambers;
Described computing machine connects with signal with described sensor and well heater respectively.
The present invention's technical scheme further is: described sensor comprises pressure transducer, temperature sensor.
Preferably, described well heater is arranged on the outside of described steam raising plant, and described well heater is the solenoid heating generator.
Perhaps, described well heater is arranged in the inner chamber of described lower module, described well heater is an electric heater, has second socket that is electrically connected with described well heater on described upper module or the lower module, be connected with second transmission line on the described computing machine, have second plug that is complementary with described second socket on described second transmission line.
Further, has cavity on the described upper module, the endoporus of described inner chamber, cavity, seal to be detected is common to form described steam generation chamber, described sensor is arranged in the cavity of described upper module, described well heater is arranged in the inner chamber of described lower module, and described atmospheric valve is arranged on the described upper module.
Preferably, have first socket that is electrically connected with described sensor on described upper module or the lower module, be connected with first transmission line on the described computing machine, have first plug that is complementary with described first socket on described first transmission line.
Perhaps, described sensor is connected with described computer radio signal respectively with well heater.
Preferably, it also comprises and is used for support that described steam raising plant is supported.
Preferably, described weighing device is the high precision balance, and its precision is 0.01 milligram.
Preferably, described control system also comprises the AD/DA card, and described sensor, AD/DA card, computing machine and well heater constitute close loop control circuit.
Utilize above-mentioned detection device to detect the method for sealing property of sealing component, comprise the steps:
A), in the inner chamber of steam raising plant, be full of pure water, with described upper module, seal and lower module pretension to be detected;
B), start heating schedule to the heating of the pure water in the described inner chamber, open atmospheric valve, make the indoor steam discharging air of described vapor generating cavity, close atmospheric valve, on described weighing device, measure and write down the initial weight W of described steam raising plant 0
C), under design temperature, set pressure, make described steam raising plant keep setting-up time t;
D), on described weighing device, measure and write down the general assembly (TW) W of described steam raising plant 1
E), calculate slip Δ W=(W 1-W 0)/t.
Because technique scheme utilization, the present invention compared with prior art has following advantage and effect: the present invention utilizes weight-loss method to detect steam raising plant weight change within a certain period of time, thereby calculate the slip of seal, method is simple, feasible, and measurement result is accurate.
Description of drawings
Accompanying drawing 1 is the device synoptic diagram that hydrops method of the prior art is measured steam leakage;
Accompanying drawing 2 is the synoptic diagram of pick-up unit of the present invention;
Wherein: 1~5 tensimeter; 2,3,4,7,8,12 humidity millivoltmeters; 6,11, valve; 9, test seal; 10, O-ring seal; 13, autoclave; 14, motor; 15, pitcher pump; 16, water pump; 17, reverse checkvalve; 18, leak-off connection; 19, steam generator;
21, steam raising plant; 22, lower module; 23, upper module; 24, seal; 25, pressure transducer; 26, temperature sensor; 27, computing machine; 28, steam generation chamber; 29, weighing device; 31, well heater;
Embodiment
Below in conjunction with drawings and Examples the present invention is further described, the upper-lower position relation described in this instructions is identical with the relation of upper-lower position shown in the accompanying drawing 2.
A kind of sealing property of sealing component pick-up unit, it comprises: steam raising plant 21, described steam raising plant 21 comprises the lower module 22 with inner chamber, be arranged on the upper module 23 on the described lower module 22, seal 24 to be detected is carried between described upper module 23 and the lower module 22, this upper module 23 and lower module 22 are two joint flanges, described lower module 22, surround steam generation chamber 28 between seal 24 to be detected and the described upper module 23, described steam raising plant 21 also comprises the atmospheric valve (not shown) that is used to get rid of the air in the described steam generation chamber 28;
Well heater 31 is used for the liquid heating in the described steam generation chamber 28;
Weighing device 29 is used for described steam raising plant 21 is weighed;
Control system, be used to gather the environmental information in the described steam generation chamber 28, described environmental information is analyzed, and control 31 pairs of described inner chambers of described well heater according to analysis result and heat, described control system comprises computing machine 27 and is arranged on pressure transducer 25 and temperature sensor 26 in the described steam chambers 28, require other sensors can also be set according to concrete test case, described control system also comprises the AD/DA card, described pressure transducer 25, temperature sensor 26, the AD/DA card, computing machine 27 and well heater 31 constitute close loop control circuit;
Described computing machine 27 connects with signal with described sensor and well heater 31 respectively.
The method of described pick-up unit comprises the steps:
A), in the inner chamber of steam raising plant, be full of pure water, with described upper module, seal and lower module pretension to be detected;
B), start heating schedule to the heating of the pure water in the described inner chamber, open atmospheric valve, make the indoor steam discharging air of described vapor generating cavity, close atmospheric valve, on described weighing device, measure and write down the initial weight W of described steam raising plant 0
C), under design temperature, set pressure, make described steam raising plant keep setting-up time t;
D), on described weighing device, measure and write down the general assembly (TW) W of described steam raising plant 1
E), calculate slip Δ W=(W 1-W 0)/t.
According to the result of calculation of slip, we can carry out qualitative assessment to the sealing situation of seal.
In the present embodiment, has cavity on the described upper module 23, the endoporus of described inner chamber, cavity, seal 24 to be detected is common to form described steam generation chamber 29, described pressure transducer 25 and temperature sensor 26 are arranged in the cavity of described upper module 23, described well heater 31 is arranged in the inner chamber of described lower module 22, and described atmospheric valve is arranged on the described upper module 23.
During detection, at first be full of pure water in the inner chamber with lower module 22, compress seal 24 and upper module 23, and the steam reaction generating means 21 that whole pretension is good is placed on the weighing device 29.Start heating schedule, open atmospheric valve, make the pure water in lower module 22 inner chambers partly generate high temperature and high pressure steam, the air in the exhaust steam generation chamber 28 is closed the atmospheric valve on the upper module 23, the initial weight W0 of record steam raising plant 21.The start detection program, the temperature and pressure situation that pressure transducer 25, temperature sensor 26 detect in the steam generation chamber 28, and the process signal conditioner feeds back in the computing machine 27 in real time, 27 pairs of institutes of computing machine image data is carried out signal analysis, according to 31 heating of analysis result control heater, allow steam raising plant 21 remain under design temperature and the pressure all the time.After keeping a period of time under the high temperature and high pressure steam condition, if the sealing property of seal 24 is bad, steam in the steam generation chamber 28 will be bled in the outside atmosphere by seal 24, the general assembly (TW) of steam raising plant 21 is reduced thereupon, the weight of weighing device 29 detected minimizings is exactly the leakage rate of steam, and the ratio of leakage rate and retention time is exactly slip.
Wherein, described well heater 31 can be selected built-in or external, and the external well heater is arranged on the outside of described steam raising plant 31, and described well heater is the solenoid heating generator.
Perhaps, described well heater 31 is an electric heater, is arranged in the inner chamber of described lower module 22.Owing to adopt electric heater need utilize the lead power supply, and the weight of lead might influence the accurate measurement of steam raising plant 21 weight, therefore we consider the connecting line of well heater 31 and temperature sensor 26 and pressure transducer 25 all releasably is connected with steam raising plant 21, when steam raising plant 21 is weighed, remove all leads and external equipment, so just can measure steam leakage accurately.The concrete method that adopts is, have first socket that is electrically connected with described pressure transducer 25 and temperature sensor 26 and second socket that is electrically connected with described well heater 31 on described upper module 23 or the lower module 22, be connected with first transmission line and second transmission line on the described computing machine 27, have first plug that is complementary with described first socket on described first transmission line, have second plug that is complementary with described second socket on described second transmission line.
For avoiding pegging graft repeatedly lead, described pressure transducer 25 and temperature sensor 26 and well heater 31 can also be connected by wireless signals such as infrared rays with described computing machine 27.
Preferably, described weighing device is 0.01 milligram a high precision balance, influence its precision on the weighing device 29 for avoiding steam raising plant 21 to be placed on for a long time, pick-up unit of the present invention also comprises and is used for support (not shown) that described steam raising plant 21 is supported, in above-mentioned method of testing, after process B step is weighed, just steam raising plant 21 is taken off from weighing device 29, steam raising plant 21 is finished on described support in the maintenance process under design temperature and the pressure.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (11)

1. sealing property of sealing component pick-up unit, it is characterized in that: it comprises
Steam raising plant, described steam raising plant comprises lower module with inner chamber, is arranged on the upper module on the described lower module, seal to be detected is carried between described upper module and the lower module, surround the steam generation chamber between described lower module, seal to be detected and the described upper module, described steam raising plant also comprises the atmospheric valve that is used to get rid of the indoor air of described vapor generating cavity;
Well heater is used for the liquid heating indoor to described vapor generating cavity;
Weighing device is used for described steam raising plant is weighed;
Control system, be used to gather the indoor environmental information of described vapor generating cavity, described environmental information is analyzed, and control described well heater according to analysis result described inner chamber is heated, described control system comprises computing machine and is arranged on the interior sensor of described steam chambers;
Described computing machine connects with signal with described sensor and well heater respectively.
2. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: described sensor comprises pressure transducer, temperature sensor.
3. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: described well heater is arranged on the side of described steam raising plant, and described well heater is the solenoid heating generator.
4. sealing property of sealing component pick-up unit according to claim 1, it is characterized in that: described well heater is arranged in the inner chamber of described lower module, described well heater is an electric heater, has second socket that is electrically connected with described well heater on described upper module or the lower module, be connected with second transmission line on the described computing machine, have second plug that is complementary with described second socket on described second transmission line.
5. sealing property of sealing component pick-up unit according to claim 4, it is characterized in that: have cavity on the described upper module, the endoporus of described inner chamber, cavity, seal to be detected is common to form described steam generation chamber, described sensor is arranged in the cavity of described upper module, described well heater is arranged in the inner chamber of described lower module, and described atmospheric valve is arranged on the described upper module.
6. sealing property of sealing component pick-up unit according to claim 1, it is characterized in that: have first socket that is electrically connected with described sensor on described upper module or the lower module, be connected with first transmission line on the described computing machine, have first plug that is complementary with described first socket on described first transmission line.
7. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: described sensor is connected with described computer radio signal respectively with well heater.
8. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: it also comprises and is used for support that described steam raising plant is supported.
9. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: the precision that described weighing device is is 0.01 milligram.
10. sealing property of sealing component pick-up unit according to claim 1 is characterized in that: described control system also comprises the AD/DA card, and described sensor, AD/DA card, computing machine and well heater constitute close loop control circuit.
11. a method of utilizing pick-up unit as claimed in claim 1 to detect sealing property of sealing component, it is characterized in that: it comprises the steps:
A), in the inner chamber of steam raising plant, be full of pure water, with described upper module, seal and lower module pretension to be detected;
B), start heating schedule to the heating of the pure water in the described inner chamber, open atmospheric valve, make the indoor steam discharging air of described vapor generating cavity, close atmospheric valve, on described weighing device, measure and write down the initial weight W of described steam raising plant 0
C), under design temperature, set pressure, make described steam raising plant keep setting-up time t;
D), on described weighing device, measure and write down the general assembly (TW) W of described steam raising plant 1
E), calculate slip Δ W=(W 1-W 0)/t.
CN2010101402070A 2010-04-04 2010-04-04 Device and method for detecting sealing property of sealing element CN101793585B (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103364145A (en) * 2013-06-30 2013-10-23 天长市远洋船舶设备有限公司 Method for detecting sealing performance
CN103698092A (en) * 2013-12-31 2014-04-02 苏州宝骅机械技术有限公司 Quantitative leakage detection device of pressure system
CN103712756A (en) * 2013-12-31 2014-04-09 苏州宝骅机械技术有限公司 Quantitative leakage detecting method for pressure system
CN103712754A (en) * 2013-12-31 2014-04-09 苏州宝骅机械技术有限公司 Quantified leak rate detection method of pressure system
CN103728105A (en) * 2013-12-31 2014-04-16 苏州宝骅机械技术有限公司 Quantitative leak detection device of pressure system
CN104122049A (en) * 2014-08-06 2014-10-29 苏州宝骅机械技术有限公司 High-pressure gas tightness test method
CN104776988A (en) * 2015-03-23 2015-07-15 浙江省质量检测科学研究院 Intelligent resistance to fatigue testing device and method for rubber sealing ring for daily pressure cooker
CN106989874A (en) * 2017-05-31 2017-07-28 西南石油大学 A kind of horizontal high speed rock bit bearing helixseal experimental rig
CN107036799A (en) * 2017-05-31 2017-08-11 西南石油大学 A kind of method of testing of rock bit helixseal sediment outflow performance
CN107091736A (en) * 2017-05-31 2017-08-25 西南石油大学 A kind of method of testing of rock bit helixseal sediment outflow performance
CN107702871A (en) * 2017-09-30 2018-02-16 中国第汽车股份有限公司 A kind of high pressure sealing detecting system
CN108254130A (en) * 2017-12-30 2018-07-06 北京化工大学 Continuous high-temperature sealing performance test wind tunnel device

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JP2003035624A (en) * 2001-07-23 2003-02-07 Ee D:Kk Leak inspection method and apparatus therefor
CN1825083A (en) * 2006-03-27 2006-08-30 南京化工职业技术学院 Multi-parameter controllable high-rotating speed mechanical sealing performance tester
US20060236755A1 (en) * 2005-04-25 2006-10-26 General Atomics Accelerated ultralow moisture permeation measurement
CN201716155U (en) * 2010-04-04 2011-01-19 苏州宝骅机械技术有限公司 Sealing property detector for sealing parts

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SU446785A1 (en) * 1972-01-25 1974-10-15 Предприятие П/Я А-3562 Device for monitoring tightness
CN2341136Y (en) * 1998-06-12 1999-09-29 杭州新纪元消防科技有限公司 Leakage tester
JP2003035624A (en) * 2001-07-23 2003-02-07 Ee D:Kk Leak inspection method and apparatus therefor
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CN201716155U (en) * 2010-04-04 2011-01-19 苏州宝骅机械技术有限公司 Sealing property detector for sealing parts

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103364145A (en) * 2013-06-30 2013-10-23 天长市远洋船舶设备有限公司 Method for detecting sealing performance
CN103698092A (en) * 2013-12-31 2014-04-02 苏州宝骅机械技术有限公司 Quantitative leakage detection device of pressure system
CN103712756A (en) * 2013-12-31 2014-04-09 苏州宝骅机械技术有限公司 Quantitative leakage detecting method for pressure system
CN103712754A (en) * 2013-12-31 2014-04-09 苏州宝骅机械技术有限公司 Quantified leak rate detection method of pressure system
CN103728105A (en) * 2013-12-31 2014-04-16 苏州宝骅机械技术有限公司 Quantitative leak detection device of pressure system
CN103698092B (en) * 2013-12-31 2016-03-02 苏州宝骅机械技术有限公司 The quantitative leak detecting device of pressure system
CN103728105B (en) * 2013-12-31 2016-01-13 苏州宝骅机械技术有限公司 A kind of quantitative leak detecting device of pressure system
CN103712756B (en) * 2013-12-31 2015-12-30 苏州宝骅机械技术有限公司 A kind of quantitative leakage detection method of pressure system
CN103712754B (en) * 2013-12-31 2015-12-30 苏州宝骅机械技术有限公司 The quantitative slip detection method of pressure system
CN104122049A (en) * 2014-08-06 2014-10-29 苏州宝骅机械技术有限公司 High-pressure gas tightness test method
CN104776988A (en) * 2015-03-23 2015-07-15 浙江省质量检测科学研究院 Intelligent resistance to fatigue testing device and method for rubber sealing ring for daily pressure cooker
CN106989874A (en) * 2017-05-31 2017-07-28 西南石油大学 A kind of horizontal high speed rock bit bearing helixseal experimental rig
CN107036799A (en) * 2017-05-31 2017-08-11 西南石油大学 A kind of method of testing of rock bit helixseal sediment outflow performance
CN107091736A (en) * 2017-05-31 2017-08-25 西南石油大学 A kind of method of testing of rock bit helixseal sediment outflow performance
CN107702871A (en) * 2017-09-30 2018-02-16 中国第汽车股份有限公司 A kind of high pressure sealing detecting system
CN108254130A (en) * 2017-12-30 2018-07-06 北京化工大学 Continuous high-temperature sealing performance test wind tunnel device
CN108254130B (en) * 2017-12-30 2020-09-22 北京化工大学 Wind tunnel device for continuous high-temperature sealing performance test

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Address after: 215415 Taicang City, Jiangsu province Shuangfeng town's Economic Development Zone

Patentee after: Suzhou Bao Hua sealing Polytron Technologies Inc

Address before: 215415 Taicang City, Jiangsu province Shuangfeng town's Economic Development Zone

Patentee before: Suzhou Baohua Mechanical Technology Co., Ltd.

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