CN203516732U - Composite sealing ring of flat valve seat - Google Patents
Composite sealing ring of flat valve seat Download PDFInfo
- Publication number
- CN203516732U CN203516732U CN201320546427.2U CN201320546427U CN203516732U CN 203516732 U CN203516732 U CN 203516732U CN 201320546427 U CN201320546427 U CN 201320546427U CN 203516732 U CN203516732 U CN 203516732U
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- China
- Prior art keywords
- ring
- metal
- sealing ring
- pushing out
- diameter
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- Expired - Fee Related
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Abstract
The utility model discloses a composite sealing ring of a flat valve seat. The composite sealing ring comprises a metal ring, a non-metal ring and a supporting ring. The three rings are mutually sleeved to be combined, and an internal embedding mode and an external embedding mode are achieved. The composite sealing ring of the flat valve seat has the advantages that the high pressure resistance metal sealing ring is arranged in the non-metal sealing ring suitable for low pressure, the supporting ring with a trapezoid cross section is arranged in the metal sealing ring, and the composite sealing ring is formed. A good sealing function is achieved when the pressure, the temperature and the media in a pipeline are alternatively varied.
Description
Technical field
the utility model relates to petrochemical field, particularly a kind of dull and stereotyped valve seat composite sealing ring.
Background technique
at petroleum production or chemical field, seal ring is an important constituent elements in dull and stereotyped valve seat, because it is mostly in the environment in severe work, as high temperature, high pressure, high corrosive environment, in addition, the crude content component of exploiting out is complicated: oil, gas, sand, water etc., proposed very high requirement to pipeline and flap type: high temperature resistant, high pressure resistant, corrosion-resistant, wear-resistant, stability, seal ring Performance and quality will be directly connected to production, personal safety and the social environment safety of enterprise.
because flap type is that the pipeline that petrochemical field is comparatively conventional opens and closes apparatus, pressure in pipeline, temperature and medium are all the time in a dynamic operation conditions, no matter traditional one pack system seal ring is metal or non-metallic material, all only exist single deformation coefficient, if pure metal seal ring is only under pipeline high pressure conditions, there is deformation sealing effect, but under pipeline low pressure situation, pure metal seal ring is but difficult to be returned to initial sealing state after deformation; There is reverse phenomenon in nonmetallic seal ring, if rubber seal is only under pipeline low pressure situation, has deformation sealing effect, and when running into high pressure conditions, rubber seal can broken invalid.Due to alternately changing of loine pressure, temperature and medium, can cause the seal ring of traditional one pack system in flap type, airtight performance is not strong, often leakage phenomenon can occur, the lighter's befouling environment, severe one causes potential safety hazard.
Summary of the invention
the defect existing for above-mentioned classic flat-plate valve seat conventional seals circle, the utility model aims to provide the dull and stereotyped valve seat composite sealing ring that a kind of Safety performance is higher.
the utility model solves the technological scheme that its technical problem adopts: a kind of dull and stereotyped valve seat composite sealing ring, comprise metal ring, nonmetallic ring and pushing out ring, and described nonmetallic ring is annular, U-shaped cross-section; Described metal ring is annular, U-shaped cross-section, and the expansion plane of metal ring is Nogata waveform in the form of a ring; Pushing out ring is annular, trapezoidal cross-section.
metal ring in described composite sealing ring, nonmetallic ring and pushing out ring are three rings, and cover is compound mutually; Can be divided into embedded and two kinds of externally embedded types compound, embedded be complex as the external diameter of metal ring and the U-shaped of nonmetallic ring at the bottom of diameter identical, the external diameter of pushing out ring is less than diameter at the bottom of metal ring U-shaped, the internal diameter of pushing out ring is greater than the internal diameter of nonmetallic ring; The internal diameter that externally embedded type is complex as metal ring is identical with diameter at the bottom of nonmetallic ring U-shaped, and the external diameter of pushing out ring is less than the external diameter of metal ring, and the internal diameter of pushing out ring is greater than diameter at the bottom of metal ring U-shaped.
the beneficial effects of the utility model are: in being applicable to the nonmetal seal ring of low pressure, insert high voltage bearing metal o-ring, and in metal o-ring, insert the pushing out ring with trapezoidal cross-section, be combined into composite sealing ring, when running into pipeline inner pressure, temperature and medium and occur alternately to change, there is good airtight effect.
Accompanying drawing explanation
fig. 1 is that the utility model is used state (embedded) schematic diagram;
fig. 2 is the utility model Split type structure (embedded) schematic diagram;
fig. 3 is the embedded structure of the utility model (A-A analyses and observe) schematic diagram;
fig. 4 is the utility model externally embedded type structure (analysing and observe) schematic diagram;
fig. 5 is that the utility model metal ring launches plane (part) structural representation;
fig. 6 is local (embedded) schematic diagram of the utility model Split type structure.
in its figure: 1-pushing out ring; 2-metal ring; 3-nonmetallic ring.
Embodiment
the utility model is usingd Fig. 1, as most preferred embodiment, specific implementation method is described:
pipeline for high density more than API5000, high pressure, its operating environment is severe, be mostly high temperature, high pressure, high corrosive environment, in addition, the crude content component of exploiting out is complicated: oil, gas, sand, water etc., so when material option, can adopt tool anti-impact to damage the 40GrMo material or 718 of ability
#
stainless steel is made metal ring 2, and nonmetallic ring 3 and pushing out ring 1 can adopt has high temperature resistant, corrosion resistant Teflon material.
fig. 3 is the embedded structure of the utility model (analysing and observe) schematic diagram; Fig. 4 is the utility model externally embedded type structure (analysing and observe) schematic diagram; Airtight applicable to the Internal and external cycle of valve plate, valve base chamber.
first stamping forming metal ring 2 thin plate blanks are made to Nogata waveform (see figure 5), be converted into the U font ring-type (see figure 6) of interior curved (excurvation), to soldered.Consider medium, pressure and temperature effect in pipeline, for the metal ring 2 after machine shaping, need to carry out tempering and ageing treatment, to eliminate machining stress, especially for the easy concentrated sharp corner of the stress of Nogata waveform, to eliminate the battery effect of chemical corrosion in actual use, guarantee usability of the present utility model and life-span.
the utility model has changed traditional one pack system seal ring and has only existed single deformation coefficient, metal and nonmetallic three component structure patterns have been implanted, seal ring after compound is at pressure, temperature, under the shear situation of medium, there is the wide characteristic of deformation range and the strong feature of sealing effect, not only can be widely used in oil, chemical industry, metallurgical, mine, capital construction, sewage treatment, in the fields such as harbour shipping and industry in the delivery line of heterogeneous fluid-mixing, equally applicable to hydraulic machinery field, as the grinding machine of working machine, the forklift of Transport Machinery, the sealing of the hydraulic systems such as crane.
the foregoing is only a preferred embodiment of the present utility model; can not limit protection domain of the present utility model with it; the utility model also can have other structural change; so long as the equalization of doing according to protection domain of the present utility model changes and modify, all should belong in the scope that the utility model contains.
Claims (2)
1. a dull and stereotyped valve seat composite sealing ring, comprises metal ring, nonmetallic ring and pushing out ring, it is characterized in that described nonmetallic ring is for annular, U-shaped cross-section; Described metal ring is annular, U-shaped cross-section, and the expansion plane of metal ring is Nogata waveform in the form of a ring; Pushing out ring is annular, trapezoidal cross-section.
2. dull and stereotyped valve seat composite sealing ring according to claim 1, cover is compound mutually to it is characterized in that metal ring, nonmetallic ring and pushing out ring in described composite sealing ring being three rings; Can be divided into embedded and two kinds of externally embedded types compound, embedded be complex as the external diameter of metal ring and the U-shaped of nonmetallic ring at the bottom of diameter identical, the external diameter of pushing out ring is less than diameter at the bottom of metal ring U-shaped, the internal diameter of pushing out ring is greater than the internal diameter of nonmetallic ring; The internal diameter that externally embedded type is complex as metal ring is identical with diameter at the bottom of nonmetallic ring U-shaped, and the external diameter of pushing out ring is less than the external diameter of metal ring, and the internal diameter of pushing out ring is greater than diameter at the bottom of metal ring U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546427.2U CN203516732U (en) | 2013-09-04 | 2013-09-04 | Composite sealing ring of flat valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546427.2U CN203516732U (en) | 2013-09-04 | 2013-09-04 | Composite sealing ring of flat valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516732U true CN203516732U (en) | 2014-04-02 |
Family
ID=50375664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546427.2U Expired - Fee Related CN203516732U (en) | 2013-09-04 | 2013-09-04 | Composite sealing ring of flat valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153797B (en) * | 2014-08-27 | 2016-06-22 | 巨隆集团芜湖兴隆液压有限公司 | A kind of core assembly of operating valve set |
| CN110094505A (en) * | 2019-02-09 | 2019-08-06 | 沈阳富创精密设备有限公司 | Envelope technique is hidden before a kind of hole side wall anode |
-
2013
- 2013-09-04 CN CN201320546427.2U patent/CN203516732U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153797B (en) * | 2014-08-27 | 2016-06-22 | 巨隆集团芜湖兴隆液压有限公司 | A kind of core assembly of operating valve set |
| CN110094505A (en) * | 2019-02-09 | 2019-08-06 | 沈阳富创精密设备有限公司 | Envelope technique is hidden before a kind of hole side wall anode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20160904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |