CN102094970A - Sealing gasket capable of controlling range of stress relaxation - Google Patents
Sealing gasket capable of controlling range of stress relaxation Download PDFInfo
- Publication number
- CN102094970A CN102094970A CN 201110034343 CN201110034343A CN102094970A CN 102094970 A CN102094970 A CN 102094970A CN 201110034343 CN201110034343 CN 201110034343 CN 201110034343 A CN201110034343 A CN 201110034343A CN 102094970 A CN102094970 A CN 102094970A
- Authority
- CN
- China
- Prior art keywords
- stress relaxation
- gasket seal
- relaxation rate
- seal
- parameter
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 230000006870 function Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 11
- 239000002826 coolant Substances 0.000 description 3
- 239000000659 freezing mixture Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010046996 Varicose vein Diseases 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
-
- 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
- G01M3/2853—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 for pipe joints or seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a sealing gasket capable of controlling the range of stress relaxation. The sealing gasket is generally used for the flanged connection of a pipeline and the important sealing connection of a valve, a pressure vessel, and the like and internally provided with a sensor; and the sensor is connected with an external computer. The important performance parameter-stress relaxation of the sealing gasket can be analyzed to enable the stress relaxation of the sealing gasket to be in a monitor state at any time by immediately learning the temperature and the pressure of the sealing gasket; and whether the stress relaxation parameter meets a stress relaxation parameter provided by design requirements or not is analyzed to learn the sealing function state of the sealing gasket in time by learning the stress relaxation parameter.
Description
Technical field
The present invention relates to the seal ring of a kind of gasket seal that is widely used in pressurized container, piping flange, pump, the valve, especially high temperature, high pressure and extremely important sealed member.
Background technique
At high temperature, high pressure and extremely important working condition, must consider following gasket seal technical order: 1, guarantee run duration under the situation of temperature and pressure alternation leak-down rate all the time in the design load scope; 2, under various bad working environments, in time understand imminent leak-down rate situation, make the leakage situation in the monitoring state all the time; This situation is such as the voltage stabilizer of nuclear power station, reactor pressure vessel, spentnuclear fuel treatment device etc.; In time find to be about to the leakage that produces, the prevention of accident is played an important role; And adopt usually at present: solid torus pad, spirotallic gasket, grooved metal gasket, turbine pad etc. all do not have this function.
Therefore the invention provides a kind of gasket seal of controlled stress relaxation rate scope, by built-in sensor, make pad in the monitoring state at any time, the stress that makes primary sealing area is all the time in the regulation stress range, can be in which kind of leak condition by anticipation grasp Graphite pad, whether meet design requirement.
Summary of the invention
The invention provides a kind of gasket seal of controlled stress relaxation rate scope, this gasket seal is by the residing temperature of sensor measurement pad, pressure, can understand the important performance characteristic-stress relaxation rate of pad at any time by measuring these indexs, make gasket seal in the monitoring state at any time, by understanding the stress relaxation rate parameter, whether which kind of leak condition analysis and anticipation pad are in, meet design requirement.
The purpose of this invention is to provide the intellectuality that realizes pad, the cooperation by conventional seals pad and sensor, computer makes this pad become the gasket seal of controlled stress relaxation rate scope, makes the sealability of pad in the monitoring state at any time.
The gasket seal of this controlled stress relaxation rate scope comprises: 1, stainless steel outer shroud; 2, ring in the stainless steel; 3, pure Expanded graphite or the PTFE more than 99%; 4, sensor, this sensor can be measured the residing temperature of pad, pressure and these data are transmitted; 5, computer: the data that the Computer Analysis sensor spreads out of, draw this important gasket performance desired value of stress relaxation rate, and desired value analyzed, draw conclusion and the working state in following a period of time of anticipation that whether pad is in the working state that meets design requirement.
Description of drawings
According to following description and accompanying drawing, can understand the present invention well, these accompanying drawings have shown non-restrictive example of the present invention.More particularly, in the accompanying drawings:
Be further detailed below in conjunction with example:
Fig. 1 is the axial section of pressurized container, contains the sealing of embodiments of the invention junction point between pressure container cylinder flange and top cover flange.
Fig. 2 is the sectional view of gasket seal of the controlled stress relaxation rate scope of the embodiment of the invention shown in Fig. 1.
1, ring in the stainless steel, 2, the stainless steel outer shroud, 3, content is pure Expanded graphite or PTFE more than 99%, 4, sensor, 5, computer, 6, flange, 7, ozzle, 8, top cover, 9, pressurized container supporting surface, 10, ring segment, 11, guiding device, 12 shells
Embodiment
Shown in Figure 1 is the pressurized container of high temperature, pressure coolant, cylindrical shell 12 is welded with freezing mixture by the flange 6 of a strap bolt tapped hole, one and imports and exports the ring segment 10 of ozzle 7, a changeover portion and a semicircle lower seal head and be welded, wherein top cover 8 is hot pressed into semicircle by steel plate, be drilled with bolt hole at upper flange 6 upper peripheries, have on its supporting surface and place groove of the present invention.When high temperature, pressure coolant flow in pressurized container, wherein some inwall along pressurized container directly flows to the pressure vessel outlet adapter, and follow the variation of temperature and pressure, because pressure vessels top cover and shell flange are two independent parts of making, in pressurized container, must be assembled together and will guarantee high leak tightness, internal pressure will be far longer than the external pressure at pressurized container place during the pressurized container operation, for preventing that freezing mixture from leaking, a kind of gasket seal of controlled stress relaxation rate scope is installed between pressure container cylinder and top cover.
Junction point will bear in the course of the work between pressure container cylinder and the top cover, expansion that hot coolant produces and contraction and the radial and axial STRESS VARIATION that causes, this variation is very easy to produce and leaks, and still the initial stage of this leakage can't be detected, and when begins leakage and unclear; The present invention is with the simple and effective leakage situation of anticipation seal arrangement of a kind of gasket seal of controlled stress relaxation rate scope.
By sectional view shown in Fig. 2, the present invention is able to clearer and more definite description.The gasket seal of this controlled stress relaxation rate scope is made up of five parts, comprising: 1, ring in the stainless steel, 2, the stainless steel outer shroud, 3, content is pure Expanded graphite more than 99% or the primary sealing area of PTFE, 4, sensor, 5, computer.
Should be understood that above-mentioned material does not limit the present invention, can also use the different other materials of hardness, as nonmetallic material or other metallic material such as modification varicosity tetrafluoros.
In preferred embodiment, interior ring 1 is a stainless steel, outer shroud 2 is a stainless steel, in the middle of the gasket seal is primary sealing area 3,3 is pure Expanded graphite or the PTFE of content more than 99%, two kinds of material stiffnesses of in 3 this are far smaller than the stainless steel inside and outside ring and height E is greater than interior 1 the height F that encircles, and the height F of interior ring 1 should be greater than the height e of outer shroud 2; When the pretightening force pretension, middle pure Expanded graphite or PTFE more than 99% at first are compressed, and then increase pretightening force, make the interior ring of stainless steel reach sufficient stress, built-in sensors 4 in middle pure Expanded graphite more than 99% or the PTFE sealing surface, continuous variation meeting owing to environment during pad work produces stress relaxation on pad, this stress relaxation plays first meeting and encircles in stainless steel and relax, and then can be to relax on pure Expanded graphite more than 99% or the PTFE at primary sealing area-content, relaxing on primary sealing area must be less than 10%.Built-in sensors can be measured temperature, the pressure of pad working environment of living under the pad working state, these parameters transfer data to computer 5 by sensor, computer is analyzed these data, draw pad and be in which kind of stress relaxation state, the stress relaxation rate that whether carries out on primary sealing area is less than 10% conclusion.
Should be appreciated that the example that accompanying drawing has only shown to be provided via practical demonstration of the present invention, can change its form and configuration, but can not break away from the scope of the design that the present invention is based on.Any reference mark that provides in subsidiary claims is that specification and accompanying drawing are read for ease of reference purely, and they do not limit the protection domain of being represented by claim.
Claims (6)
1. the gasket seal of a controlled stress relaxation rate scope comprises:
This gasket seal is generally used in being tightly connected of piping flange connection and valve and pressurized container; Built-in sensors in pad, sensor is connected with outer computer.
It is characterized in that:
Timely important performance characteristic-stress relaxation rate of understanding important parameter-temperature, the pressure of gasket seal and then analyzing pad, make the stress relaxation rate of gasket seal in the monitoring state at any time, by understanding the stress relaxation rate parameter, analyze the stress relaxation parameter of regulation in whether meeting design requirement, in time understand the sealing function state of gasket seal.
2. seal ring according to claim 1 is characterized in that: this pad has built-in sensors.
3. seal ring according to claim 1 is characterized in that: this sensor is outside to be connected with computer, can analyze the stress relaxation rate of gasket seal.
4. seal ring according to claim 1, the total quinquepartite, inside and outside ring is a metal, the centre is pure Expanded graphite or the PTFE material more than 99%, the centre is the height of ring in the height of the sealing surface of pure Expanded graphite more than 99% or PTFE material will be higher than, and the height of interior ring will be higher than the height of outer shroud.
5. according to claim 1,4 described seal rings, built-in sensors in pure graphite and PTFE material, sensor is connected with outer computer.
6. according to claim 1,2,3,4,5 described seal rings, it is characterized in that: sensor is connected with outer computer, can detect important parameter-temperature, the pressure of gasket seal in real time and then analyze the important performance characteristic-stress relaxation rate of gasket seal, make gasket seal in the monitoring state at any time, by understanding the stress relaxation rate parameter, analyze gasket seal and be in which kind of leak condition, the stress relaxation rate parameter of regulation in whether meeting design requirement is in time understood the sealing function state of gasket seal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034343 CN102094970A (en) | 2011-02-01 | 2011-02-01 | Sealing gasket capable of controlling range of stress relaxation |
| PCT/CN2011/000237 WO2012103673A1 (en) | 2011-02-01 | 2011-02-15 | Sealing gasket whose stress relaxation ratio is in a controllable range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034343 CN102094970A (en) | 2011-02-01 | 2011-02-01 | Sealing gasket capable of controlling range of stress relaxation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094970A true CN102094970A (en) | 2011-06-15 |
Family
ID=44128175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110034343 Pending CN102094970A (en) | 2011-02-01 | 2011-02-01 | Sealing gasket capable of controlling range of stress relaxation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102094970A (en) |
| WO (1) | WO2012103673A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518890A (en) * | 2011-12-20 | 2012-06-27 | 苏州宝骅机械技术有限公司 | Seal gasket for flange face sealing |
| CN102661391A (en) * | 2012-04-27 | 2012-09-12 | 南京化工特种设备检验检测研究所 | Pressure container with pressure detection control device |
| CN102678925A (en) * | 2012-05-23 | 2012-09-19 | 苏州宝骅机械技术有限公司 | Multi-stage constant stress sealing gasket |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115248020A (en) * | 2022-06-23 | 2022-10-28 | 上海汽车集团股份有限公司 | A kind of detection method and device of sealing gasket |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2261533Y (en) * | 1996-10-23 | 1997-09-03 | 耿雪山 | Combined washer |
| DE19912135A1 (en) * | 1998-05-20 | 1999-12-09 | Freudenberg Carl Fa | Shaft seal incorporates temperature sensor projecting into fluid retained by seal |
| US7009409B2 (en) * | 2001-08-10 | 2006-03-07 | Davie Neil R | Determination of gasket integrity by capacitance measurement |
| CN201090736Y (en) * | 2007-09-29 | 2008-07-23 | 吴建荣 | Core level metal graphite washer |
| CN201531594U (en) * | 2009-09-30 | 2010-07-21 | 马志刚 | Constant stress seal gasket capable of detecting leakage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2685943B1 (en) * | 1992-01-08 | 1994-04-15 | Peugeot Automobiles | SEALING DEVICE. |
| CN102080726A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent controlled sealing gasket |
-
2011
- 2011-02-01 CN CN 201110034343 patent/CN102094970A/en active Pending
- 2011-02-15 WO PCT/CN2011/000237 patent/WO2012103673A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2261533Y (en) * | 1996-10-23 | 1997-09-03 | 耿雪山 | Combined washer |
| DE19912135A1 (en) * | 1998-05-20 | 1999-12-09 | Freudenberg Carl Fa | Shaft seal incorporates temperature sensor projecting into fluid retained by seal |
| US7009409B2 (en) * | 2001-08-10 | 2006-03-07 | Davie Neil R | Determination of gasket integrity by capacitance measurement |
| CN201090736Y (en) * | 2007-09-29 | 2008-07-23 | 吴建荣 | Core level metal graphite washer |
| CN201531594U (en) * | 2009-09-30 | 2010-07-21 | 马志刚 | Constant stress seal gasket capable of detecting leakage |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518890A (en) * | 2011-12-20 | 2012-06-27 | 苏州宝骅机械技术有限公司 | Seal gasket for flange face sealing |
| CN102661391A (en) * | 2012-04-27 | 2012-09-12 | 南京化工特种设备检验检测研究所 | Pressure container with pressure detection control device |
| CN102678925A (en) * | 2012-05-23 | 2012-09-19 | 苏州宝骅机械技术有限公司 | Multi-stage constant stress sealing gasket |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012103673A1 (en) | 2012-08-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |