CN205877179U - Static sealing structure - Google Patents
Static sealing structure Download PDFInfo
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- CN205877179U CN205877179U CN201620239379.6U CN201620239379U CN205877179U CN 205877179 U CN205877179 U CN 205877179U CN 201620239379 U CN201620239379 U CN 201620239379U CN 205877179 U CN205877179 U CN 205877179U
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- seal structure
- static seal
- sealing
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Abstract
The utility model relates to a static sealing structure, the whole annular that is of static sealing structure, the cross -section is trapezoidal. It can realize sealing up between metal casing and the window to has good sealed effect under the high temperature high pressure.
Description
Technical field
This utility model relates to the sealing structure of petroleum and petrochemical industry, particularly to a kind of static seal structure.
Background technology
In oil-gas field development physical simulation experiment, research worker needs the indigo plant through the metal shell used in experiment precious
Stone form, in observation metal shell, the situation of change of fluid, provides theoretical foundation for Reservoir Development.It is thus desirable to regard transparent
Seal between window and metal shell, it is ensured that fluid leakage does not occur.
According to its operation principle, static seal can be divided into Flange joint gasket seal, self-tightening sealing, lapping-in face seal, O
Sealing, rubber sealing, packing seal, threaded gasket seal, seal with screwed joint, socket joint connect sealing, sealant sealing
Deng.
Flange joint gasket seal refers to the sealing of the upper different types of pad between the sealing surface of two connectors (such as flange)
Pad, such as metallic gasket, non-metallic gasket or nonmetal and metal Composition spacer, is then tightened by screw thread or bolt, twists
Clamp force makes pad produce elastic and plastic deformation, at the injustice in fill plug seal face, reaches sealing purpose.
Flange joint gasket seal is widely used in the flange connections of various process pipe, valve, equipment, machine, pump, with
And manhole on equipment, hand hole, visor, big lid flange connections etc..
" affecting the factor of flange seal and the selection of pad " (Li Lijun, " petrochemical equipment technology ", 1997 the 6th
Phase) in mention seal pressure and temperature and the pattern of connector and the shape of pad, material relevant.Pad can be divided in shape
Annular, oblateness, rectangle and ellipse etc.；Pad according to the kind of sealing medium, pressure and temperature etc. use condition and
Design of Sealing Structure etc. form various pads.The cross sectional shape of conventional pad mainly has rectangle, trapezoidal, octagonal, ellipse
Circle, waveform, profile of tooth, circle, lens shaped etc..Generally, Flange joint gasket seal temperature range applicatory is-70-600
DEG C, pressure is more than 1.333kPa (absolute pressure) or less than or equal to 35MPa.
In sum, when the existing general seal temperature of typical pad sheet sealing structure is higher, seal pressure is limited, it is impossible to meet
Actual demand.
Utility model content
The purpose of this utility model is to provide a kind of static seal structure with trapezoid cross section, and it is capable of metal shell
And the sealing between form, and have good under High Temperature High Pressure (pressure is higher than 150MPa, and temperature is higher than 100 degrees Celsius)
Sealing effectiveness.
This utility model employing solution below:
A kind of static seal structure, described static seal structure is the most annular, and cross section is trapezoidal.
Preferably, described cross section is right-angled trapezium.
Preferably, described static seal structure is made up of polyether-ether-ketone.
Preferably, described static seal structure is for the sealing between metal shell and form.
Preferably, described metal shell is provided with the trapezoidal groove matched with described cross section.
Preferably, described metal shell is made up of carbon steel or Hastelloy, and described form is made up of sapphire.
The beneficial effects of the utility model are: static seal structure is for the sealing between metal shell and form, and it has
Having trapezoid cross section, it is possible to compress metal shell by three faces, the 4th face compresses form, thus realizes the sealing in four faces.
Static seal structure of the present utility model increase effectively the contact area with metal shell and form.Additionally, when temperature raises,
Static seal structure expands in the groove of metal shell so that static seal structure is while bearing pressure vertically, and circumference exists
Tensioner in the groove of metal shell, improves sealing further.
Accompanying drawing explanation
By combining accompanying drawing, exemplary embodiment is described in more detail, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, wherein, in the exemplary embodiment, identical reference number typically represents identical
Parts.
Fig. 1 shows the installation sectional view of the static seal structure according to exemplary embodiment；
Fig. 2 shows the partial enlarged drawing of Fig. 1.
Main Reference Numerals illustrates:
1. housing；2. sealing ring；3. transparent window；4. seal chamber.
Detailed description of the invention
It is more fully described preferred embodiment of the present utility model below with reference to accompanying drawings.Although accompanying drawing shows this reality
With novel preferred embodiment, however, it is to be appreciated that may be realized in various forms this utility model and should not illustrated here
Embodiment limited.On the contrary, it is provided that these embodiments are to make this utility model more thorough and complete, and can be by
Scope of the present utility model intactly conveys to those skilled in the art.
Static seal structure according to exemplary embodiment is the most annular, and cross section is trapezoidal.It can be used for oil-gas field development
Sealing between the metal shell and the form that use in physical simulation experiment, it is possible to compress metal shells by three faces, the 4th
Individual face compresses form, thus realizes the sealing in four faces, and sealing is excellent.It is Celsius that this static seal structure reaches 150 in temperature
When spending, maximum bears pressure up to 150MPa.
Preferably, described cross section is right-angled trapezium.
Preferably, described static seal structure is made up of polyether-ether-ketone (PEEK).Polyether-ether-ketone (PEEK) is molecule
Main chain contains the linear aromatic race macromolecular compound of chain link.Its component unit is oxygen-to phenylene-oxygen-carbonyl-to sub-benzene
Base, is hemicrystalline, thermoplastic.The advantage of polyether-ether-ketone is that chemical stability is good, high temperature resistant, wear-resisting, coefficient of friction
The various dielectric corrosions such as extremely low, self lubricity good, chemicals-resistant burn into is fire-retardant, the most resistance to oil-water-gas, are especially suitable for oil gas and open
The field of sending out.Specifically, PPEK material has the property that
1: mechanical property: PEEK is toughness and rigidity has both and obtains the plastics of balance.Particularly it is to alternate stress
Excellent endurance is the most outstanding in all plastics, can match in excellence or beauty with alloy material.
2: self lubricity: PEEK has outstanding sliding properties in all plastics, is suitable for being strict with low friction system
Number and antifriction consume way and use.Particularly carbon fibre, graphite respectively accounts for the mixed and modified PEEK self-lubricating property of certain proportion more preferably.
3: chemical proofing (corrosion resistance): the PEEK chemical proofing with excellence, at common chemical drugs
In, can dissolve or destroy its only concentrated sulphuric acid, its corrosion resistance is close with nickel steel.
4: anti-flammability: PEEK is highly stable polymer, the sample that 1.45mm is thick, is not added with any fire retardant and just can reach
High fire-retardance standard.
The peel resistance of 5: peel resistance: PEEK is fine, and can use under severe conditions.
6: fatigue durability: PEEK has best fatigue durability in all resins.
7: radioresistance: resistance to high irradiation very capable, exceed the polystyrene that radioresistance in resins for universal use is best.
The high-performance of the insulating capacity remaining to keep good can be made when γ irradiation dose reaches 1100Mrad.
8: hydrolytic resistance: PEEK and composite not by water and the chemical affect of high-pressure steam, make with this material
The goods continuous use in high-temperature high pressure water become still can keep excellent specific property.
Preferably, described static seal structure is for the sealing between metal shell and form, particularly oil gas field
Sealing between the metal shell and the form that use in exploitation physical simulation experiment.Metal shell is provided with and matches with trapezoid cross section
The trapezoidal groove closed, during use, static seal structure is placed in groove, closely cooperates with groove, has three contact surfaces with groove.Quiet
The 4th face sealing structure contacts with window plane.In use, form and static seal structure can be carried out pre-by bolt
Tightly, preload pressure can make form fit tightly with static seal structure.When temperature raises, due to effect of expanding with heat and contract with cold, quiet close
Seal structure heat expands, and sealing effectiveness is more preferably.
Preferably, metal shell is made up of carbon steel or Hastelloy.Hastelloy is corrosion-resistant nickel-based alloy, main
Nickel-chromium alloy to be divided into and the big class of NI-CR-MO alloys two.Hastelloy has following two key properties: 1) in oxidation and reduction
In two ambience, most of corrosive mediums are had the decay resistance of excellence；2) have outstanding resistance to spot corrosion, crevice corrosion and
Stress crack corrosion performance.
Preferably, form is made up of hard material, generally sapphire, particularly synthetic sapphire.
The static seal structure according to exemplary embodiment is described in detail below with reference to Fig. 1 and Fig. 2.According to exemplary embodiment
Static seal structure 2 metal shell 1 and the form 3 that use in oil-gas field development physical simulation experiment between sealing, should
Static seal structure 2 is the most annular, and cross section is right-angled trapezium.Metal shell 1 is provided with the right angle matched with static seal structure 2
Trapezoidal groove.
During use, static seal structure 2 is placed in the groove of metal shell 1, three faces of static seal structure 2 and metal shell
1 contact, it is achieved the sealing in three faces, the 4th face of static seal structure 2 and form 3 plane contact, it is achieved the 4th face close
Envelope.Static seal structure according to exemplary embodiment solves the sealing problem between form and metal shell, prevents metal-back
The liquid sealed in chamber 4 leakage of body 1.Under conditions of 150 degrees Celsius, seal pressure is up to 150MPa.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art,
On the basis of principle disclosed in this utility model, it is easy to make various types of improvement or deformation, it is not limited solely to above-mentioned tool
Method described by body embodiment, the most previously described mode is the most preferred, and the most restrictive meaning.
Claims (5)
1. a static seal structure, it is characterised in that described static seal structure is the most annular, cross section is trapezoidal；Described quiet close
Seal structure is for the sealing between metal shell and form.
Static seal structure the most according to claim 1, it is characterised in that described cross section is right-angled trapezium.
Static seal structure the most according to claim 1, it is characterised in that described static seal structure is made up of polyether-ether-ketone.
Static seal structure the most according to claim 1, it is characterised in that described metal shell is provided with and described cross section phase
The trapezoidal groove coordinated.
Static seal structure the most according to claim 1, it is characterised in that described metal shell is by carbon steel or Hastelloy
Making, described form is made up of sapphire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620239379.6U CN205877179U (en) | 2016-03-25 | 2016-03-25 | Static sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620239379.6U CN205877179U (en) | 2016-03-25 | 2016-03-25 | Static sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877179U true CN205877179U (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620239379.6U Active CN205877179U (en) | 2016-03-25 | 2016-03-25 | Static sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522413A (en) * | 2017-08-22 | 2017-12-29 | 惠州市锦恒工业模具设计合伙企业(普通合伙) | The optical window structure making process of sapphire eyeglass and kovar alloy air-tight packaging |
-
2016
- 2016-03-25 CN CN201620239379.6U patent/CN205877179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522413A (en) * | 2017-08-22 | 2017-12-29 | 惠州市锦恒工业模具设计合伙企业(普通合伙) | The optical window structure making process of sapphire eyeglass and kovar alloy air-tight packaging |
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