CN110207909B - Aging life prediction method and compression tool for pipeline system sealing structure - Google Patents
Aging life prediction method and compression tool for pipeline system sealing structure Download PDFInfo
- Publication number
- CN110207909B CN110207909B CN201810166533.5A CN201810166533A CN110207909B CN 110207909 B CN110207909 B CN 110207909B CN 201810166533 A CN201810166533 A CN 201810166533A CN 110207909 B CN110207909 B CN 110207909B
- Authority
- CN
- China
- Prior art keywords
- sealing structure
- tested
- temperature
- aging
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides an aging life prediction method and a compression tool for a sealing structure of a pipeline system, wherein the method comprises the following steps: (1) compressing a sealing structure to be tested; (2) Carrying out constant temperature aging on the sealing structure to be tested in the compressed state, and testing whether the sealing structure to be tested fails at the same time interval; (3) And determining the aging life of the to-be-tested sealing structure according to the original parameters and the parameters after failure. The invention provides a method for predicting the aging life of a sealing structure of a pipeline system.A practical application environment of the sealing structure to be tested is simulated by compressing and aging the sealing structure to be tested, the compression and aging are stopped until the sealing structure fails, and finally the aging life of the sealing structure to be tested is obtained by comparing, analyzing and calculating the original data of the sealing structure to be tested and the failed data; the method has simple steps and accurate prediction, can accurately judge the aging life of the sealing structure, and provides powerful data reference and support for the design of a pipeline system.
Description
Technical Field
The invention relates to the material characteristic research of a sealing material of a pipeline system, in particular to an aging life prediction method and a compression tool of a sealing structure of the pipeline system.
Background
The high-voltage direct-current transmission converter valve in the power transmission line undergoes the conversion from air cooling and oil cooling to water cooling, and compared with the air cooling and the oil cooling, the high-voltage direct-current transmission converter valve has the advantages that the heat conductivity coefficient of water is highest, the specific heat capacity is largest, the convective heat transfer capacity is strongest, and the convective heat transfer coefficient ratio of air, oil and water is 1:10:100, the cooling effect can be greatly improved by adopting water cooling, the junction temperature of the thyristor is reduced, and the running reliability of the equipment is improved. However, in recent years, with the rapid development of extra-high voltage direct-current transmission projects in some regions, the converter valve water cooling system is used as the most important auxiliary system in the direct-current transmission projects, the normal operation of the converter valve water cooling system is guaranteed, and if the water cooling system fails (stops operating or leaks water), the converter valve can be damaged, and the stable operation of the whole direct-current transmission system can be seriously threatened. During the operation of the converter station, the sealing materials of the cooling pipeline system are aged in different degrees, so that the direct current transmission system is unplanned to stop operation, and huge economic loss is caused.
The service life of the existing sealing material, namely the annular sealing ring, is generally predicted by two methods. One is the ISO recommended classification based on the heat aging resistance of the raw rubber and the corresponding life is specified, which requires few tests and is inexpensive. However, this method has a drawback in that the heat aging resistance of the vulcanized rubber is dependent on various factors such as the properties of the raw rubber, the vulcanizing agent, the antioxidant and the like. The other method is quick measurement in laboratory, and its principle is that according to the change rule of thermal-oxidative ageing property, the accelerated ageing tests under different temp. are used to establish P-T-T mathematical model, then the service life under the storage or service temp. is calculated by extrapolation along the temp.. However, in the existing sealing ring accelerated aging tests, the sealing ring is directly placed in a high-low temperature test box, whether the sealing ring fails or not is determined through observation or experience, only a temperature variable is considered in the tests, and the accuracy of a prediction result cannot meet the requirement.
Disclosure of Invention
Aiming at the defects of the prior art, the applicant designs an aging life prediction method of a pipeline system sealing structure; the method determines the size of a limiting column and the size of bolt locking torque in a compression tool based on the structural size of the sealing material mounting water pipe, so that the test condition is closer to the actual engineering condition, and provides a method for judging the failure of the sealing material based on a hydraulic test after high-low temperature circulation, so as to determine the service life of the sealing material, and the method is convenient to operate and accurate in prediction.
The purpose of the invention is realized by the following technical scheme:
the invention provides an aging life prediction method for a sealing structure of a pipeline system, which comprises the following steps:
(1) Compressing the sealing structure to be tested;
(2) Carrying out constant temperature aging on the sealing structure to be tested in the compressed state, and checking whether the sealing structure to be tested fails or not at the same time interval;
(3) And determining the aging life of the to-be-tested sealing structure according to the original parameters and the parameters after failure of the to-be-tested sealing structure.
Preferably, the sealing structure to be tested is a sealing ring.
Preferably, the compressing the sealing structure to be tested includes: and putting the sealing structure to be tested into a compression tool designed according to a pipeline system for compression.
Preferably, the compression tool comprises clamping plates which are parallel to each other, fixing holes which vertically penetrate through the clamping plates and fixing pieces which penetrate through the fixing holes; and a plurality of limiting columns which are matched with the sealing structure to be tested and are vertical to the clamping plates are arranged between the clamping plates.
Preferably, the compression tool designed according to the pipeline system comprises:
height h of the restraining post s Calculated as follows:
in the formula: h is g Is the density to be measured of the water pipe of the pipeline systemThe depth of the seal structure placing groove; h is mentioned 0 The original height of the sealing structure to be tested is taken as the height of the sealing structure to be tested;
and the radius of the limiting column is smaller than the inner diameter of the sealing structure to be measured.
Preferably, the number of the limiting columns in the compression tool is greater than or equal to 10.
Preferably, the compression includes that putting the seal structure that awaits measuring into the compression frock according to pipe-line system design:
sleeving each limiting column with a to-be-detected sealing structure respectively, and ensuring that the to-be-detected sealing structure is not contacted with the limiting columns;
compressing the compression tool to a saturation state through the fixing piece.
Preferably, the sealing structure to be tested in the compressed state includes: putting the compression tool into a detection box for constant temperature aging;
an air circulation assembly capable of enabling air to flow laminar is arranged in the detection box; the volume of the detection box is 10-15 times of the volume of the compression tool; the error of the temperature precision of the detection box is +/-1-2K.
Preferably, the temperature of the constant temperature aging is greater than or equal to 75 ℃.
Preferably, the same time is an integer multiple of 12 h.
Preferably, the checking whether the sealing structure to be tested fails comprises:
taking out the sealing structures to be tested with the number more than or equal to 3 from the compression tool, placing the sealing structures to be tested at room temperature for at least 30min, and measuring the stable height of the sealing structures to be tested;
putting the taken out sealing structure to be tested into a failure inspection assembly, and inspecting whether the sealing structure fails or not;
calculating the average value of the stable heights if all the stable heights fail;
and if not, continuously aging the compression tool which compresses the rest sealing structure to be tested.
Preferably, the failure inspection assembly comprises a radiator, a circulation loop consisting of a connecting water pipe and a water machine system, and a pressurizing device connected with the circulation loop in parallel.
Preferably, the step of placing the taken out sealing structure to be tested into a failure inspection assembly to inspect whether the sealing structure fails comprises the following steps:
respectively placing the sealing structures to be tested at the joints of the circulation loops;
the water machine system controls the circulation loop to alternately circulate at high and low temperatures in turn;
pressing the circulation loop for at least 60min through pressing equipment;
if the circulation loop leaks water, the circulation loop fails; if the circulation loop is watertight, the circulation loop is not invalid.
Preferably, the high temperature of the high temperature and the low temperature is 75-90 ℃; the low temperature in the high and low temperature is 5-15 ℃.
Preferably, the time interval between the high-temperature cycle and the low-temperature cycle in the high-temperature and low-temperature cycles is greater than or equal to 3min.
Preferably, the times of the high-temperature circulation and the low-temperature circulation in the high-temperature circulation and the low-temperature circulation are respectively 5; and if the high-temperature cycle or the low-temperature cycle does not reach 5 times and fails, the high-temperature cycle and the low-temperature cycle are not carried out any more.
Preferably, the determining the aging life according to the original parameters and the parameters after the failure of the sealing structure to be tested comprises:
the permanent set C is calculated as follows:
in the formula: h is 0 The original height of the sealing structure to be measured; h is 1 The average value of the stable height of the sealing structure to be tested after failure; h is s To limit the height of the posts;
calculating the service life tau of the sealing structure to be tested according to the following formula:
in the formula: b is a test constant; a is an empirical constant, and a is more than 0 and less than or equal to 1; and K is an aging speed coefficient, and the unit of K is 1/h.
Based on the same invention concept, the invention also provides a compression tool for compressing the sealing structure of the pipeline, wherein the compression tool comprises clamping plates which are parallel to each other, fixing holes which vertically penetrate through the clamping plates and fixing pieces which penetrate through the fixing holes; and limiting columns which are matched with the sealing structure to be tested and are vertical to the clamping plates are respectively arranged between the clamping plates.
Preferably, the height h of the restraining post s Calculated as follows:
in the formula: h is g The depth of the groove is used for placing the sealing structure of the water pipe of the pipeline system; h is 0 Is the original height of the seal.
Preferably, the radius of the restraining post is less than the inner diameter of the sealing structure.
Compared with the closest prior art, the invention has the following beneficial effects:
1. the prediction method provided by the invention simulates the practical application environment of the sealing structure to be tested through compression and aging of the sealing structure to be tested, stops compression and aging until the sealing structure is invalid, and finally determines the aging life of the sealing structure to be tested according to the original parameters and the invalid parameters of the sealing structure to be tested; the method has simple steps and accurate prediction, can accurately judge the aging life of the sealing structure, and provides powerful data reference and support for the design of a pipeline system.
2. According to the prediction method provided by the invention, the size of the limiting column and the size of the bolt locking torque in the compression tool are determined based on the structural size of the sealing material mounting water pipe, so that the test condition is closer to the actual engineering condition, and the sealing material failure determination is carried out based on a mode of hydrostatic test after high-low temperature circulation, so that the service life of the sealing material is determined, and the prediction accuracy is greatly improved.
3. The compression tool provided by the invention can control the compression force through the design of the limiting column, so that the pressure on the sealing structure in the compression tool is ensured to be equal, and the accuracy of pressure control is improved.
4. The compression tool provided by the invention ensures that the pressure is equal to the actual pressure in the pipeline; design benefit can compress a plurality of ring type seal rings simultaneously, has increased compression efficiency, has practiced thrift the compression cost.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1: a schematic view of a failure verification assembly provided by the present invention;
reference numerals: (1) -a radiator, (2) -a connecting water pipe, (3) -a water machine system and (4) -a pressurizing device.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application.
Example 1
The invention provides an aging life prediction method of a sealing structure of a pipeline system, which comprises the following steps:
(1) Putting the sealing structure to be tested into a compression tool designed according to a pipeline system for compression;
(2) Carrying out constant temperature aging on the compression tool, and checking whether the sealing structure to be tested fails every 12 h;
(3) And determining the aging life of the to-be-tested sealing structure according to the original parameters and the parameters after failure.
The sealing structure to be tested is a sealing ring.
The compression tool comprises clamping plates which are parallel to each other, fixing holes which vertically penetrate through the clamping plates and fixing pieces which penetrate through the fixing holes; a plurality of limiting columns which are matched with the sealing structure to be tested and are vertical to the clamping plates are arranged between the clamping plates; the splint is made of 316L or 316 stainless steel, the surface roughness of the splint is not more than 0.4 mu m, and the splint has enough rigidity, and the bending of the splint is not more than 0.01mm when the splint is pressed.
The compression frock according to piping system design includes:
height h of the restraining post s Calculated as follows:
in the formula: h is g Placing the depth of the groove for the sealing structure to be tested of the water pipe of the pipeline system; h is 0 The original height of the sealing structure to be tested is taken as the height of the sealing structure to be tested;
the radius of the limiting column is smaller than the inner diameter of the sealing structure to be measured.
The number of the limiting columns in the compression tool is greater than or equal to 10, and in this example, 20 can be adopted.
The to-be-tested sealing structure is put into a compression tool designed according to a pipeline system for compression, and the compression comprises the following steps:
sleeving each limiting column with a to-be-detected sealing structure respectively, and ensuring that the to-be-detected sealing structure is not contacted with the limiting columns;
compressing the compression tool to a saturation state through the fixing piece.
Will the compression frock carries out the ageing including that decides the temperature: putting the compression tool into a detection box for constant temperature aging;
an air circulation component capable of enabling air to be laminar is arranged in the detection box; the volume of the detection box is 10-15 times of the volume of the compression tool; the error of the temperature precision of the detection box is +/-1-2K.
The temperature of the constant temperature aging is more than or equal to 75 ℃, and in this case, the temperature can be 75 ℃.
The same time is an integral multiple of 12 h.
The checking whether the sealing structure to be tested fails comprises:
taking 3 sealing structures to be tested out of the compression tool, placing the sealing structures at room temperature for at least 30min, and measuring the stable heights of the sealing structures;
placing the taken out sealing structure to be tested into a failure inspection assembly shown in figure 1, and inspecting whether the sealing structure is completely failed or not;
calculating the average value of the stable heights if all the stable heights fail;
and if not, putting the compression tool compressing the rest sealing structure to be tested into the detection box for continuous aging.
As shown in fig. 1, the failure inspection assembly includes a circulation loop composed of a radiator (1), a connection water pipe (2), and a water machine system (3), and a pressurizing device (4) connected in parallel with the circulation loop.
Put into the test assembly that became invalid with the seal structure that awaits measuring of taking out, it is invalid to examine it includes:
respectively placing the sealing structures to be tested at the joints of the circulation loops;
the water machine system controls the circulation loop to alternately circulate at high and low temperatures in turn;
pressing the circulation loop for at least 60min by pressing equipment, wherein the pressure is 1.6MPa;
if the circulation loop leaks water, the circulation loop is invalid; if the circulation loop is watertight, the circulation loop is not invalid.
The high temperature of the high temperature and the low temperature is 75-90 ℃; the low temperature in the high and low temperatures is 5-15 ℃.
And the time interval between the high-temperature circulation and the low-temperature circulation in the high-temperature circulation and the low-temperature circulation is more than or equal to 3min.
The times of high-temperature circulation and low-temperature circulation in the high-temperature circulation and the low-temperature circulation are respectively 5; and if the high-temperature cycle or the low-temperature cycle does not reach 5 times and fails, the high-temperature cycle and the low-temperature cycle are not carried out any more.
The step of determining the aging life of the seal structure according to the original parameters and the parameters after the failure of the seal structure comprises the following steps:
the permanent set C is calculated as follows:
in the formula: h is 0 For the original height of the sealing structure to be testedDegree; h is 1 The average value of the stable heights of the sealing structures to be tested after failure is obtained; h is s To limit the height of the posts;
calculating the service life tau of the sealing structure to be tested according to the following formula:
in the formula: b is a test constant; a is an empirical constant, and a is more than 0 and less than or equal to 1; and K is an aging speed coefficient with the unit of 1/h.
And the temperature of the constant temperature aging is 75 ℃, and the aging life of the sealing material in the 75 ℃ application environment is determined according to the original parameters and the parameters after failure of the sealing material.
The pressurizing equipment is a pressurizing pump.
In this embodiment, the parameter measurement of the annular seal ring is performed by using a digital vernier caliper.
Example 2
This example is identical to example 1 except that the temperature for the constant temperature aging was 85 ℃, and thus the aging life obtained was 85 ℃ in the application environment.
Example 3
This example is identical to example 1 except that the temperature for the constant temperature aging is 100 ℃, and thus the aging life obtained is the aging life in the application environment of 100 ℃.
Example 4
This example is identical to example 1 except that the temperature for the constant temperature aging is 120 deg.C, and thus the aging life obtained is the aging life in the 120 deg.C application environment.
Example 5
Based on the same invention concept, the invention also provides a compression tool for compressing the sealing structure of the pipeline, wherein the compression tool comprises clamping plates which are parallel to each other, a fixing hole which vertically penetrates through the clamping plates and a fixing piece which penetrates through the fixing hole; and limiting columns which are matched with the sealing structure to be tested and are vertical to the clamping plates are respectively arranged between the clamping plates.
Height h of the restraining post s Calculated as follows:
in the formula: h is mentioned g The depth of the groove is used for placing the sealing structure of the water pipe of the pipeline system; h is mentioned 0 Is the original height of the seal structure;
the radius of the restraining post is less than the inner diameter of the seal structure.
Finally, it should be noted that: the embodiments described are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present application belong to the protection scope of the present application.
Claims (9)
1. A method for predicting the aging life of a sealing structure of a pipeline system is characterized by comprising the following steps:
(1) Compressing the sealing structure to be tested;
(2) Carrying out constant temperature aging on the sealing structure to be tested in the compressed state, and checking whether the sealing structure to be tested fails or not at the same time interval;
(3) Determining the aging life of the to-be-tested sealing structure according to the original parameters and the parameters after failure of the to-be-tested sealing structure;
compressing the seal structure to be tested comprises: putting the sealing structure to be tested into a compression tool designed according to a pipeline system for compression;
the compression tool comprises clamping plates which are parallel to each other, fixing holes which vertically penetrate through the clamping plates and fixing pieces which penetrate through the fixing holes; a plurality of limiting columns which are matched with the sealing structure to be tested and are vertical to the clamping plates are arranged between the clamping plates;
height h of the restraining post s Calculated as follows:
in the formula: h is g Placing the depth of the groove for the sealing structure to be tested of the water pipe of the pipeline system; h is 0 The original height of the sealing structure to be tested is taken as the height of the sealing structure to be tested;
the radius of the limiting column is smaller than the inner diameter of the sealing structure to be tested;
the to-be-tested sealing structure is put into a compression tool designed according to a pipeline system for compression, and the compression comprises the following steps:
sleeving each limiting column with a to-be-detected sealing structure respectively, and ensuring that the to-be-detected sealing structure is not contacted with the limiting columns;
compressing the compression tool to a saturated state through a fixing piece;
the aging at constant temperature of the to-be-detected sealing structure in the compressed state comprises the following steps:
putting the compression tool into a detection box for constant temperature aging;
an air circulation assembly capable of enabling air to flow laminar is arranged in the detection box; the volume of the detection box is 10-15 times of the volume of the compression tool; the error of the temperature precision of the detection box is +/-1-2 Kelvin;
the checking whether the sealing structure to be tested fails comprises:
taking out the sealing structures to be tested with the number more than or equal to 3 from the compression tool, placing the sealing structures to be tested at room temperature for at least 30min, and measuring the stable height of the sealing structures to be tested;
putting the taken out sealing structure to be tested into a failure inspection assembly, and inspecting whether the sealing structure fails or not;
if all the failures are caused, calculating the average value of the stable heights;
if not, continuing to age the compression tool compressing the rest sealing structure to be tested;
the failure inspection assembly comprises a radiator, a circulating loop consisting of a connecting water pipe and a water machine system and a pressurizing device connected with the circulating loop in parallel;
the seal structure that will take out to await measuring is put into failure inspection subassembly, and whether it is invalid includes:
respectively placing the sealing structures to be tested at the joints of the circulation loops;
the water machine system controls the circulation loop to alternately circulate at high and low temperatures in turn;
pressing the circulation loop for at least 60min through pressing equipment;
if the circulation loop leaks water, the circulation loop is invalid; if the circulation loop is watertight, the circulation loop is not invalid.
2. The method for predicting the aging life of the sealing structure of the pipeline system according to claim 1, wherein the sealing structure to be tested is a sealing ring.
3. The method of claim 1, wherein the number of limiting columns is greater than or equal to 10.
4. The method for predicting the aging life of a sealing structure of a pipe system according to claim 1, wherein the temperature of the constant temperature aging is 75 ℃ or higher.
5. The method of claim 1, wherein the same time is an integer multiple of 12 h.
6. The method for predicting the aging life of a sealing structure of a pipe system according to claim 1, wherein the high temperature of the high temperature and the low temperature is 75 to 90 ℃; the low temperature of the high temperature and the low temperature is 5-15 ℃.
7. The method for predicting the aging life of a sealing structure of a pipeline system according to claim 1, wherein the time interval between the high-temperature cycle and the low-temperature cycle in the high-temperature cycle and the low-temperature cycle is greater than or equal to 3min.
8. The aging life prediction method of a pipe system sealing structure according to claim 1, wherein the number of high-temperature cycles and the number of low-temperature cycles in the high-temperature and low-temperature cycles are respectively 5; and if the high-temperature cycle or the low-temperature cycle does not reach 5 times and fails, the high-temperature cycle and the low-temperature cycle are not carried out any more.
9. The method for predicting the aging life of the sealing structure of the pipeline system according to claim 1, wherein the determining the aging life of the sealing structure to be tested according to the original parameters and the parameters after the sealing structure fails comprises:
the permanent set C is calculated as follows:
in the formula: h is 0 The original height of the sealing structure to be measured; h is 1 The average value of the stable height of the sealing structure to be tested after failure; h is s To limit the height of the posts;
calculating the service life tau of the sealing structure to be measured according to the following formula:
in the formula: b is a test constant; a is an empirical constant, and a is more than 0 and less than or equal to 1; and K is an aging speed coefficient with the unit of 1/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810166533.5A CN110207909B (en) | 2018-02-28 | 2018-02-28 | Aging life prediction method and compression tool for pipeline system sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810166533.5A CN110207909B (en) | 2018-02-28 | 2018-02-28 | Aging life prediction method and compression tool for pipeline system sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110207909A CN110207909A (en) | 2019-09-06 |
| CN110207909B true CN110207909B (en) | 2023-02-03 |
Family
ID=67778704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810166533.5A Active CN110207909B (en) | 2018-02-28 | 2018-02-28 | Aging life prediction method and compression tool for pipeline system sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110207909B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414451A (en) * | 2021-12-20 | 2022-04-29 | 上汽通用汽车有限公司 | Method for testing compressed water tightness of foam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885321U (en) * | 2010-11-23 | 2011-06-29 | Tcl空调器(中山)有限公司 | Split air conditioner |
| CN103454168A (en) * | 2013-09-10 | 2013-12-18 | 浙江省泵阀产品质量检验中心 | Rapid gas decompression (RGD) detection system and method of anti-explosion O-shaped ring for petrochemical valve |
| 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 |
| CN104568603A (en) * | 2013-10-10 | 2015-04-29 | 湖北航天化学技术研究所 | Working condition simulation and pre-estimating method for service lifetime of rubber sealing element |
| CN105259058A (en) * | 2015-11-19 | 2016-01-20 | 中国西电电气股份有限公司 | Method for measuring compression deformation of sealing ring |
| CN105675853A (en) * | 2016-01-18 | 2016-06-15 | 中国兵器工业第五九研究所 | Method for judging and testing failure critical values of rubber sealing elements |
| CN107702905A (en) * | 2017-09-28 | 2018-02-16 | 电子科技大学 | A kind of rubber ring Q-percentile life Forecasting Methodology based on Weibull distribution |
-
2018
- 2018-02-28 CN CN201810166533.5A patent/CN110207909B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885321U (en) * | 2010-11-23 | 2011-06-29 | Tcl空调器(中山)有限公司 | Split air conditioner |
| CN103454168A (en) * | 2013-09-10 | 2013-12-18 | 浙江省泵阀产品质量检验中心 | Rapid gas decompression (RGD) detection system and method of anti-explosion O-shaped ring for petrochemical valve |
| CN104568603A (en) * | 2013-10-10 | 2015-04-29 | 湖北航天化学技术研究所 | Working condition simulation and pre-estimating method for service lifetime of rubber sealing element |
| 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 |
| CN105259058A (en) * | 2015-11-19 | 2016-01-20 | 中国西电电气股份有限公司 | Method for measuring compression deformation of sealing ring |
| CN105675853A (en) * | 2016-01-18 | 2016-06-15 | 中国兵器工业第五九研究所 | Method for judging and testing failure critical values of rubber sealing elements |
| CN107702905A (en) * | 2017-09-28 | 2018-02-16 | 电子科技大学 | A kind of rubber ring Q-percentile life Forecasting Methodology based on Weibull distribution |
Non-Patent Citations (1)
| Title |
|---|
| 某弹用O型橡胶密封圈加速退化试验研究;肖坤;《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》;20140715(第07期);C032-97-第6-34页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110207909A (en) | 2019-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0142151B1 (en) | Non-destructive flux testing method and means thereof | |
| CN111458225B (en) | Method for predicting service life of proton exchange membrane fuel cell sealing material | |
| CN106644916A (en) | Method for evaluating ageing life of cable insulation material for ship | |
| CN110082201B (en) | Material delayed fracture test method under high-pressure hydrogen-doped natural gas environment | |
| CN111157179A (en) | Heat exchanger leakage detection method and leakage detection device | |
| CN108279162B (en) | Rubber sealing ring pressure loading device and pressure loading test method | |
| CN108089038B (en) | Test device and method for analyzing influence of winding defect heating on oil paper insulation performance | |
| CN104568603A (en) | Working condition simulation and pre-estimating method for service lifetime of rubber sealing element | |
| CN110207909B (en) | Aging life prediction method and compression tool for pipeline system sealing structure | |
| CN104101470A (en) | Pipeline flange test system | |
| CN105572036B (en) | A kind of fuel cell tree lace sealability test method | |
| CN110118690B (en) | High-pressure hydrogen-doped natural gas environment material performance damage evaluation device | |
| Zhang et al. | A Three-Factor Accelerated Aging Test Platform of Thermal, Mechanical Compression, Pressured SF 6, and a Leakage Test System for GIS O-Ring Seals | |
| CN108181096A (en) | A kind of accelerated aging test method and apparatus of O-ring seal | |
| CN113176046A (en) | Multi-test-piece high-temperature high-pressure sealing element performance test device and test method | |
| CN115876681B (en) | Safety evaluation method and testing device for sealing gasket | |
| CN105841904A (en) | Test method for testing service life of hydro-pneumatic spring | |
| CN215004133U (en) | Multi-test-piece high-temperature high-pressure sealing element performance test device | |
| CN113815895A (en) | Test method and device for detecting high-temperature high-pressure gas pipeline connection clamp | |
| CN110132834B (en) | Electrochemical research electrode system for high-temperature gas cooled reactor two-loop dynamic water chemical corrosion and testing method | |
| CN109855813B (en) | Simple detection device integrating pressure maintaining and helium leakage detection and operation method thereof | |
| CN214393942U (en) | Inflation expansion type sealing piece clamp | |
| CN113552007A (en) | Deep-sea soft soil shear strength and pore pressure factor testing system and testing method | |
| CN105716797A (en) | Nuclear power station measuring chamber sealing leak detection device | |
| Abid et al. | Performance testing of a gasketed bolted flange pipe joint under combined pressure and thermal loading |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |