CN102879156B - The sealing pressure-measuring method of O-ring seals and packoff thereof - Google Patents
The sealing pressure-measuring method of O-ring seals and packoff thereof Download PDFInfo
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- CN102879156B CN102879156B CN201210345478.9A CN201210345478A CN102879156B CN 102879156 B CN102879156 B CN 102879156B CN 201210345478 A CN201210345478 A CN 201210345478A CN 102879156 B CN102879156 B CN 102879156B
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Abstract
The present invention is a kind of sealing pressure-measuring method and packoff thereof of O-ring seals, and the wherein side sealing surface of sealed faying face arranges twice O ring recess, arrange abreast between twice O ring recess together with the note pressure ring groove of sealed faying face conducting; In each O ring recess, O-ring seals is set; By pressurized equipment to injection pressure in described note pressure ring groove, and pressurize certain hour, thus, detect the sealing effectiveness of the O-ring seals of note pressure ring groove both sides.The present invention makes change in the structure of sealing, one O only will be needed to enclose sealing and change the sealing of twice O circle into, and in the middle of twice O ring recess, arrange note pressure ring groove together; So, be no matter that pressure vessel or pressurized capsule all only need be suppressed note pressure ring groove, the amount of suppressing is little, easy to operate and structure is simple.
Description
Technical field
The invention relates to a kind of sealing property detecting method and device of seal, particularly relate to a kind of sealing pressure-measuring method and packoff thereof of O-ring seals.
Background technology
High pressure vessel or pressurized capsule, as the key equipment in high-pressure process process, all should have strict requirement to its material, design, manufacture etc.Seal Design is one of key of high pressure vessel design, seal leakage or inefficacy, and the lighter makes high pressure vessel cisco unity malfunction, loses high-voltage performance; Severe one can cause corrosion to pressure vessel or destroy, and even causes any property loss and personnel's injury.O shape circle is referred to as " king of sealing ", has lot of advantages: (1) sealing bit architecture is simple, compact dimensions, easy installation and removal, lighter in weight; (2) can use under static and various moving condition; (3) there is self-tightening sealing effect, sealing function can be ensured with an O-ring seal, and energy two way seal; (4) friction of motion resistance is little; (5) manufacturing deficiency of certain sealing surface can be adapted to and make up, without any need for special erecting tools; (6) high resilience, eliminates bolt pretightening; (7) size and groove standardization, cost is low, easy to use.In O shape rubber ring engineering, the most frequently used cross sectional shape is circular.Its simple shape, easy to manufacture, with low cost.Along with the development of material technology, the O shape circle that special elastomer material is made can be used in the sealing of harsh environment and more high pressure, and the application of O-ring seals also will be more and more extensive.
High pressure vessel or pressurized capsule all must detect its sealing property before coming into operation, to guarantee that its seal is not revealed.Traditional method be by high pressure vessel or pressurized capsule overall package well after, put into hyperbaric environment, take out after pressurize certain hour, check that whether its sealing property intact.This method is more complicated, operation inconvenience, wasting manpower and material resources.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of sealing pressure-measuring method and packoff thereof of O-ring seals, to overcome the defect of prior art.
Summary of the invention
The sealing pressure-measuring method of the O-ring seals that the object of the present invention is to provide a kind of structure simple, easy to operate and packoff thereof.
The object of the present invention is achieved like this, a kind of sealing pressure-measuring method of O-ring seals, and the wherein side sealing surface of sealed faying face arranges twice O ring recess, arrange abreast between twice O ring recess together with the note pressure ring groove of sealed faying face conducting; In each O ring recess, O-ring seals is set; By pressurized equipment to injection pressure in described note pressure ring groove, and pressurize certain hour, thus, detect the sealing effectiveness of the O-ring seals of note pressure ring groove both sides.
Object of the present invention can also realize like this, a kind of sealing pressure tester of O-ring seals, comprises airtight container body and the end cover being fixedly installed on body open end; Be positioned on the side of end cover in the sealed faying face of body and end cover, be provided with the spaced O ring recess of twice, the note pressure ring groove be arranged in parallel with O ring recess is together provided with between twice O ring recess, described note pressure ring groove and sealed faying face conducting, and be provided with two threaded holes communicated with note pressure ring groove at the end face of end cover; In described each O ring recess, O-ring seals is set.
In a better embodiment of the present invention, a threaded hole on described end cover is provided with ball valve, and another threaded hole connects a pressurized equipment.
In a better embodiment of the present invention, described pressurized equipment comprises the high-pressure oil pipe being connected to another threaded hole, and high-pressure oil pipe connects a pitcher pump; Described high-pressure oil pipe also connects a tensimeter.
In a better embodiment of the present invention, described two threaded holes are symmetrical arranged on end cover.
In a better embodiment of the present invention, described sealed faying face is parallel to the axial direction of body, and is made up of body open end internal face and end cover protuberance outside wall surface; Described end cover protuberance stretches to body open end; Described twice O ring recess with together with note pressure ring groove be located on all vertically on described protuberance cylindrical outer wall face.
In a better embodiment of the present invention, described sealed faying face perpendicular to the axial direction of body, and is made up of body open end end face and end cover bottom surface; Described twice O ring recess with together with note pressure ring groove be all radially located on one heart on the bottom surface of described end cover.
In a better embodiment of the present invention, described airtight container body and end cover are by bolt-connection.
From the above mentioned, the present invention makes change in the structure of sealing, one O only will be needed to enclose sealing and change the sealing of twice O circle into, and in the middle of twice O ring recess, arrange note pressure ring groove together; So, be no matter that pressure vessel or pressurized capsule all only need be suppressed note pressure ring groove, the amount of suppressing is little, easy to operate and structure is simple.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Figure 1A: be the structural representation of the sealing pressure tester of O-ring seals of the present invention.
Figure 1B: be the partial enlargement structural representation in Figure 1A.
Fig. 2: syndeton schematic diagram during sealing pressure tester pressure testing for O-ring seals of the present invention.
Fig. 3: for the sealing pressure tester pressure testing of O-ring seals of the present invention complete after structural drawing.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
The present invention proposes a kind of sealing pressure-measuring method of O-ring seals, and the wherein side sealing surface of sealed faying face arranges twice O ring recess, arrange abreast between twice O ring recess together with the note pressure ring groove of sealed faying face conducting; In each O ring recess, O-ring seals is set; In described note pressure ring groove, preset pressure (can be oil pressure, hydraulic pressure or air pressure etc.) is injected by pressurized equipment, and pressurize certain hour, thus, detect the sealing effectiveness of the O-ring seals of note pressure ring groove both sides.
As shown in Figure 1A, Figure 1B and Fig. 2, according to above-mentioned pressure-measuring method, the present invention also proposes a kind of sealing pressure tester 100 of O-ring seals, sealing pressure testing device 100 comprises airtight container body 1 and is fixedly installed on the end cover 2 of body 1 openend, in the present embodiment, described airtight container body 1 is connected by bolt 3 with end cover 2; Be positioned on the side of end cover 2 in body 1 with the sealed faying face L of end cover 2, be provided with the spaced O ring recess 21 of twice, the note pressure ring groove 22 be arranged in parallel with O ring recess 21 is together provided with between twice O ring recess 21, described note pressure ring groove 22 and sealed faying face L conducting, and be provided with two threaded holes 23 communicated with note pressure ring groove 22 at the end face of end cover 2; In described each O ring recess 21, O-ring seals 4 is set.When pressure testing, as shown in Figure 2, a threaded hole 23 on described end cover 2 arranges ball valve 5, another threaded hole 23 connects a pressurized equipment 6; In the present embodiment, described pressurized equipment 6 comprises the high-pressure oil pipe 61 being connected to another threaded hole 23, and high-pressure oil pipe 61 connects a pitcher pump 62; Described high-pressure oil pipe 61 is gone back and connects a tensimeter 63.In note pressure ring groove 22, the pressure to needing is suppressed by pitcher pump 62, and pressurize certain hour, whether observe tensimeter 63 reading and change, if tensimeter 63 reading is constant, then O-ring seals sealing is intact.After pressure testing completes, remove ball valve 5, oil pipe 61 and pitcher pump 62, and seal the threaded hole 23 (as shown in Figure 3) on end cover 2 with two sealing bolts 7.
The sealing of general existing O circle only needs one O-ring seals, and thus, if pressure vessel (by interior pressure), traditional pressure-measuring method needs in container, inject liquid and suppress to required pressure; If pressurized capsule (by external pressure), then traditional pressure-measuring method needs whole pressurized capsule to be placed in a larger container, and suppresses; This existing method wastes time and energy, and operates extremely inconvenient.
From the above mentioned, the present invention makes change in the structure of sealing, one O only will be needed to enclose sealing and change the sealing of twice O circle into, and in the middle of twice O ring recess, arrange note pressure ring groove together; So, be no matter that pressure vessel or pressurized capsule all only need be suppressed note pressure ring groove, the amount of suppressing is little, easy to operate and structure is simple.
Further, in above-mentioned pressure testing process, first to open ball valve 5, in note pressure ring groove 22, squeeze into hydraulic oil by pitcher pump 62, original air in hydraulic oil extruding note pressure ring groove 22, and discharge the air in note pressure ring groove 22 by ball valve 5, when hydraulic oil fills pressure ring groove 22 completely, close ball valve 5, and continue to suppress, until tensimeter 63 reading is required pressure, whether pressurize certain hour, observe tensimeter 63 reading and change; If tensimeter 63 reading is constant, then represent that O-ring seals sealing is intact.
After pressure testing completes, demonstrate the reliability of O-ring seals, just airtight container can be inserted its real working environment, and play its effect.So, after pressure testing completes, remove ball valve 5, oil pipe 61 and pitcher pump 62, fill pressure ring groove 22 with hydraulic oil (or lubricating oil), and seal two threaded holes 23 on end cover 2 with two sealing bolts 7; Lubricating oil can lubricate O circle, and sealing bolt 7 also plays one sealing function, and ambient pressure is wanted to enter in airtight container, needs the double seal breaking through sealing bolt 7 and O-ring seals.
Airtight container described in the present invention can be high pressure vessel, also can be pressurized capsule.
Further, in the present embodiment, as shown in Figure 2, described two threaded holes 23 are symmetrical set on end cover 2; Threaded hole 23 communicates with note pressure ring groove 22, is the passage of oil circuit when suppressing, when suppressing, need to utilize hydraulic oil to squeeze original air in note pressure ring groove 22, therefore, one of them threaded hole 23 is the inlet port of hydraulic oil, and another threaded hole 23 is the escape hole of gas.
As shown in Figure 1A, Figure 1B, in the present embodiment, described sealed faying face L is the axial direction being parallel to body 1, and sealed faying face L is made up of body 1 openend internal face and end cover 2 protuberance outside wall surface; Described end cover 2 protuberance stretches to the openend of body 1; Described twice O ring recess 21 with together with note pressure ring groove 22 be all located on described protuberance cylindrical outer wall face along body 1 axial direction.This structure is said in mechanical design handbook " piston type O encloses sealing " structure.
As another embodiment of present embodiment, described sealed faying face L can also perpendicular to the axial direction of body 1, that is: sealed faying face L adopts the end face of body 1 openend and the bottom surface of end cover 2 to form (not shown); So, described twice O ring recess 21 with together with note pressure ring groove 22 be namely along body 1 radial direction, and to be located on one heart on the bottom surface of described end cover 2.This structure is said in mechanical design handbook " end face O encloses sealing " structure.
The present invention makes change in the structure of sealing, one O only will be needed to enclose sealing and change the sealing of twice O circle into, and in the middle of twice O ring recess, arrange note pressure ring groove together; So, be no matter that pressure vessel or pressurized capsule all only need be suppressed note pressure ring groove, the amount of suppressing is little, easy to operate and structure is simple.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (8)
1. a sealing pressure-measuring method for O-ring seals, the wherein side sealing surface of sealed faying face arranges twice O ring recess, it is characterized in that: arrange abreast between twice O ring recess together with the note pressure ring groove of sealed faying face conducting; In each O ring recess, O-ring seals is set; By pressurized equipment to injection pressure in described note pressure ring groove, and pressurize certain hour, thus, detect the sealing effectiveness of the O-ring seals of note pressure ring groove both sides.
2. a sealing pressure tester for O-ring seals, comprises airtight container body and the end cover being fixedly installed on body open end; It is characterized in that: be positioned on the side of end cover in the sealed faying face of body and end cover, be provided with the spaced O ring recess of twice, the note pressure ring groove be arranged in parallel with O ring recess is together provided with between twice O ring recess, described note pressure ring groove and sealed faying face conducting, and be provided with two threaded holes communicated with note pressure ring groove at the end face of end cover; In described each O ring recess, O-ring seals is set.
3. the sealing pressure tester of O-ring seals as claimed in claim 2, is characterized in that: a threaded hole on described end cover is provided with ball valve, and another threaded hole connects a pressurized equipment.
4. the sealing pressure tester of O-ring seals as claimed in claim 3, it is characterized in that: described pressurized equipment comprises the high-pressure oil pipe being connected to another threaded hole, high-pressure oil pipe connects a pitcher pump; Described high-pressure oil pipe also connects a tensimeter.
5. the sealing pressure tester of O-ring seals as claimed in claim 3, is characterized in that: described two threaded holes are symmetrical arranged on end cover.
6. the sealing pressure tester of O-ring seals as claimed in claim 2, is characterized in that: described sealed faying face is parallel to the axial direction of body, and is made up of body open end internal face and end cover protuberance outside wall surface; Described end cover protuberance stretches to body open end; Described twice O ring recess with together with note pressure ring groove be located on all vertically on described protuberance cylindrical outer wall face.
7. the sealing pressure tester of O-ring seals as claimed in claim 2, is characterized in that: described sealed faying face perpendicular to the axial direction of body, and is made up of body open end end face and end cover bottom surface; Described twice O ring recess with together with note pressure ring groove be all radially located on one heart on the bottom surface of described end cover.
8. the sealing pressure tester of O-ring seals as claimed in claims 6 or 7, is characterized in that: described airtight container body and end cover are by bolt-connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345478.9A CN102879156B (en) | 2012-09-17 | 2012-09-17 | The sealing pressure-measuring method of O-ring seals and packoff thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345478.9A CN102879156B (en) | 2012-09-17 | 2012-09-17 | The sealing pressure-measuring method of O-ring seals and packoff thereof |
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| Publication Number | Publication Date |
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| CN102879156A CN102879156A (en) | 2013-01-16 |
| CN102879156B true CN102879156B (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210345478.9A Expired - Fee Related CN102879156B (en) | 2012-09-17 | 2012-09-17 | The sealing pressure-measuring method of O-ring seals and packoff thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554673B (en) * | 2014-10-30 | 2017-06-06 | 中国运载火箭技术研究院 | A kind of pressure-resistant seal cabin suitable for sub-aqua sport |
| CN104316271A (en) * | 2014-11-04 | 2015-01-28 | 天津博益气动股份有限公司 | Air tightness testing tool for valve bodies of unthreaded hole connector types |
| CN108942155B (en) * | 2018-09-04 | 2020-04-14 | 哈尔滨电机厂有限责任公司 | Pressure deformation adjusting process method for metal sealing surface of large ball valve of water turbine |
| CN110555288B (en) * | 2019-09-25 | 2023-04-18 | 中国石油大学(华东) | Method and system for determining axial load of graphite packing ring for static coupling seal |
| CN111900573B (en) * | 2020-08-04 | 2021-07-23 | 同济大学 | Photoelectric separation connection cavity of ocean photoelectric composite cable and sealing detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375453A (en) * | 1993-08-31 | 1994-12-27 | Westinghouse Electric Corporation | Assembly for evaluating gasket service life and method for performing the same |
| CN2539021Y (en) * | 2002-04-25 | 2003-03-05 | 广州市新龙浩工业技术有限公司 | Leakage-preventing flange sealer |
| CN101666700A (en) * | 2009-09-21 | 2010-03-10 | 南京工业大学 | Testing method of leakage rate of high-temperature sealing gasket and testing device thereof |
| CN201965004U (en) * | 2011-01-18 | 2011-09-07 | 浙江吉利汽车有限公司 | Sealing ring detector for press clutch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3686355B2 (en) * | 2001-06-06 | 2005-08-24 | 三菱重工業株式会社 | Method and apparatus for evaluating characteristics of metal gasket |
-
2012
- 2012-09-17 CN CN201210345478.9A patent/CN102879156B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375453A (en) * | 1993-08-31 | 1994-12-27 | Westinghouse Electric Corporation | Assembly for evaluating gasket service life and method for performing the same |
| CN2539021Y (en) * | 2002-04-25 | 2003-03-05 | 广州市新龙浩工业技术有限公司 | Leakage-preventing flange sealer |
| CN101666700A (en) * | 2009-09-21 | 2010-03-10 | 南京工业大学 | Testing method of leakage rate of high-temperature sealing gasket and testing device thereof |
| CN201965004U (en) * | 2011-01-18 | 2011-09-07 | 浙江吉利汽车有限公司 | Sealing ring detector for press clutch |
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| CN102879156A (en) | 2013-01-16 |
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