CN206017714U - A kind of ultralow temperature ring pipe sealing ring - Google Patents
A kind of ultralow temperature ring pipe sealing ring Download PDFInfo
- Publication number
- CN206017714U CN206017714U CN201620926612.8U CN201620926612U CN206017714U CN 206017714 U CN206017714 U CN 206017714U CN 201620926612 U CN201620926612 U CN 201620926612U CN 206017714 U CN206017714 U CN 206017714U
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- Prior art keywords
- pipe
- ring
- sealing
- sealing ring
- ultralow temperature
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Abstract
The utility model discloses a kind of ultralow temperature ring pipe sealing ring, including being provided with the pipe of hollow cavity, and one group of air admission hole being arranged on pipe, the pipe in a ring, and is provided with support member in its hollow cavity.The sealing ring of this design can be made with the low temperature material of relative flexibility, it is ensured that while sealing effectiveness, the static sealing that can be used under ultralow-temperature operation conditions and be slidingly sealed, the dynamic sealing that can be used under ultralow-temperature operation conditions again；When inner chamber does not have Fluid pressure, the pipe that stable support force supports thin-walled is provided by internal support, prevent pipe conquassation, failure；When high-pressure fluid enters tube cavity produces pressure reduction, the pipe of thin-walled has enough deformabilities, can be brought into close contact with metal surface, good sealing effect；And when two seal face relative separations, sealing ring has enough intensity to bear pressure reduction alone, will not break, bursts, fail.
Description
Technical field
The utility model is related to the technical field of the sealing of very low temperature flow, more particularly to a kind of ultralow temperature annular seal of tube
Circle.
Background technology
Ultralow temperature sealing ring is mainly used in the sealing of very low temperature flow, such as LNG, liquid hydrogen, liquid oxygen and liquid nitrogen etc., Ke Yiyong
In the sealing of LNG automobiles, the extremely low temperature tank of steamer and filler, rocket, the liquid fuel storage tank of space shuttle and cartridge
The sealing on road, and others need to use the occasion of ultralow temperature sealing.
The existing ultralow temperature sealing ring in market, most conventional is O-ring seal, this sealing ring the disadvantage is that, sealing
The sealing ring that the good material of effect, such as fluorubber, nitrile rubber or silica gel material are made, all cannot resistance to ultralow temperature, its
Elasticity and mechanical mechanics property under ultralow-temperature operation conditions significantly decays, and easily damages failure；And it is current international conventional low temperature resistant
Material, mainly PTFE and PCTFE and derivative material modified, these materials stable mechanical property under ultralow-temperature operation conditions,
But compare with rubber and silica gel, its poor flexibility, hardness are high, be not enough to produce enough deformation after stress close to realize
Envelope.
In order to overcome the problems referred to above, foreign countries to occur in that a kind of ultralow temperature sealing ring of half opening built-in metal turn, such as
Shown in Fig. 1, including material for outer ring 101 and the sheet metal winding of the half opening of the low-temperature resistant plastics such as PTFE or PCTFE
Into metal spring inner ring 102.This structure provides stable support under ultralow-temperature operation conditions using metal spring inner ring 102
Power, protects outer ring 101, prevents outer ring 101 from destructive deformation occurring after being pressed；Simultaneously relatively soft using relatively thin outer ring 101
Soft, the characteristics of be easily deformed, when open side, to have gases at high pressure or liquid to enter fashionable, using pressure reduction, outer ring 101 is strutted, is made
Press against on sealing surface tightly of outer ring 101, substantially increases sealing property.
But the ultralow temperature sealing ring of this half opening built-in metal turn is suffered from the drawback that：It is primarily adapted for use in static state
Seal and be slidingly sealed, which may not apply to dynamic sealing.Because when two seal faces are separated in opposite directions, be open cavity pressure
More than the pressure at the sealing back side, two lips 103 of outer ring 101 can by pressure tightly be fitted in seal face, with sealed end
The opposite separation in face, two lips 103 of outer ring 101 are burst, are torn, and cause sealing ring to fail.
Above-mentioned being slidingly sealed refers to that two sealing surfaces do the parallel or similar sealing for moving in parallel relatively, once graininess
Dust or other foreign matters enter sealing mating surface, can cause permanent scratch to sealing surface, so as to lead during being slidingly sealed
Serious leakage failure is caused, causes potential safety hazard；Above-mentioned dynamic sealing refers to the detached in opposite directions sealing of two seal faces, by
Relative between sealing surface slide, it is to avoid scuffing and abrasion of the foreign matter to sealing surface.
Utility model content
The purpose of utility model：The utility model discloses a kind of ultralow temperature ring pipe sealing ring, the sealing ring of this design
Can be made with the low temperature material of relative flexibility, the static sealing that can be used under ultralow-temperature operation conditions and be slidingly sealed, can be used again
Dynamic sealing under ultralow-temperature operation conditions；When inner chamber does not have Fluid pressure, stable support force is provided by internal support
The pipe of support thin-walled, prevents pipe conquassation, failure；When high-pressure fluid enters tube cavity produces pressure reduction, the pipe of thin-walled has enough shapes
Change ability, can be brought into close contact with metal surface, good sealing effect；And when two seal face relative separations, sealing ring has
Enough intensity bears pressure reduction alone, will not break, bursts, fail.
Technical scheme：In order to realize object above, the utility model discloses a kind of ultralow temperature ring pipe sealing ring, including
The pipe of hollow cavity, and one group of air admission hole being arranged on pipe is provided with, the pipe in a ring, and is provided with its hollow cavity
Support member.When inner chamber does not have Fluid pressure, support member provides stable support force, supports the pipe of thin-walled, prevents pipe conquassation, mistake
Effect；When high-pressure fluid enters tube cavity produces pressure reduction, the pipe of thin-walled is more soft, and which has enough deformabilities, can be with gold
Metal surface is closely fitted, with good sealing effectiveness；Though sealing ring is provided with air admission hole, which is still the pipe of an entirety,
When high-pressure fluid enters pipe produces pressure reduction and two seal face relative separations, integral tube has enough intensity to bear alone
Pressure reduction, will not burst, fail；The sealing ring of this design can be made with the low temperature material of flexible relative, it is ensured that sealing effectiveness
While, the static sealing that can be used under ultralow-temperature operation conditions and it is slidingly sealed, can be used for again dynamic close under ultralow-temperature operation conditions
Envelope.
Further, above-mentioned a kind of ultralow temperature ring pipe sealing ring, the annular that the support member is made for low temperature material
Bore of the material diameter of rod or ring pipe, annular rod or ring pipe less than pipe.This design structure is simple, processing cost
Low；Annular rod or ring pipe can provide support force protection pipe, and gentle with pipe, comprehensively can fit, and its support effect is good；
And do not affect the pliability and sealing property of pipe.
Further, above-mentioned a kind of ultralow temperature ring pipe sealing ring, the support member are formed for sheet metal spiral winding
Turn, or for being provided with the metal light wall pipe of opening, the turn or metal light wall pipe are in a ring.The support member of this design
Stability Analysis of Structures, long service life, there is provided stable support force protection pipe；After high-pressure fluid enters pipe, can be rapidly filled with pipe
Cavity body, sealing speed is fast, effect is good.
Further, above-mentioned a kind of ultralow temperature ring pipe sealing ring, the pipe are provided with bearing annular in shape, the bearing with
The outside mounting surface for installing annular seal of tube circle is connected.The installation of this design sealing ring is stable, reliable, is difficult sealing ring
Incline, shift.
Further, above-mentioned a kind of ultralow temperature ring pipe sealing ring, one group of air inlet hole number are no less than 2, and
Circular array shape is distributed.In installation and use, air admission hole faces that side of high-pressure fluid and arranges and uniform point sealing ring
Cloth so that intake process is stable, quick, uniform, and air inlet effect is good.
Above-mentioned technical proposal can be seen that the utility model and have the advantages that：One kind described in the utility model
Ultralow temperature ring pipe sealing ring, static sealing and be slidingly sealed that the sealing ring of this design can be used under ultralow-temperature operation conditions,
The dynamic sealing that can be used under ultralow-temperature operation conditions again；When inner chamber does not have Fluid pressure, there is stable support force to support light-wall pipe, prevent
Only pipe conquassation, failure；When high-pressure fluid enters tube cavity produces pressure reduction, the Guan Nengyu metal surfaces of thin-walled are closely fitted,
There is good sealing effectiveness；When high-pressure fluid enters pipe produces pressure reduction and two seal face relative separations, integral tube
There is enough intensity to bear pressure reduction alone, will not break, burst, fail；Its Stability Analysis of Structures, long service life, sealing speed is fast,
Effect is good.
Description of the drawings
Fig. 1 is a kind of structure chart of the ultralow temperature sealing ring of half opening built-in metal turn in prior art；
Fig. 2 is a kind of structure chart of the first embodiment of ultralow temperature ring pipe sealing ring described in the utility model；
Fig. 3 is the sectional structure chart of A-A in Fig. 2；
Fig. 4 is the detailed structure view in B portions in Fig. 3；
Fig. 5 is a kind of cross-section structure of ultralow temperature ring pipe second embodiment of sealing ring described in the utility model
Figure；
Fig. 6 is the detailed structure view in C portions in Fig. 5；
Fig. 7 is a kind of cross-section structure of the third embodiment of ultralow temperature ring pipe sealing ring described in the utility model
Figure；
Fig. 8 is the detailed structure view in D portions in Fig. 7；
Fig. 9 is a kind of cross-section structure of the 4th kind of embodiment of ultralow temperature ring pipe sealing ring described in the utility model
Figure；
Figure 10 is the detailed structure view in E portions in Fig. 9；
In figure：1- hollow cavities, 2- are managed, 3- air admission holes, 4- support members, 5- bearings, and 101- outer rings, in 102- metal springs
Circle, 103- lips.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model specific embodiment is described in detail.
Embodiment 1
A kind of the first embodiment of ultralow temperature ring pipe sealing ring of the present utility model, as shown in Figures 2 to 4, bag
Include the pipe 2 for being provided with hollow cavity 1, and one group of air admission hole 3 being arranged on pipe 2, the pipe 2 in a ring, and wherein cavity
Support member 4 is provided with body 1；The annular rod that support member 4 is made for low temperature material, the material diameter of annular rod are less than the pipe of pipe 2
Internal diameter；Pipe 2 is provided with bearing 5 annular in shape, and bearing 5 is connected with the outside mounting surface for installing annular seal of tube circle, and bearing 5 is arranged
Inner ring surface in pipe 2；One group of 3 quantity of air admission hole is no less than 2, and the distribution of circular array shape, and which is according to high-pressure fluid
Direction is arranged on the side or outer ring surface of pipe 2；Pipe 2 is made using material modified derived from PTFE or PCTFE or its.
Embodiment 2
A kind of second embodiment of ultralow temperature ring pipe sealing ring of the present utility model, as shown in Figure 5 and Figure 6, bag
Include the pipe 2 for being provided with hollow cavity 1, and one group of air admission hole 3 being arranged on pipe 2, the pipe 2 in a ring, and wherein cavity
Support member 4 is provided with body 1；The annular brace pipe that support member 4 is made for low temperature material, the material diameter of annular brace pipe are less than
The bore of pipe 2, the pipe 2 is pipe, and material diameter（The external diameter of pipe cross section）For 60mm, ring pipe sealing ring outer
Footpath is 2m, and the unilateral gap between annular brace Guan Yuguan 2 is 5.5mm；Pipe 2 is provided with bearing 5 annular in shape, the bearing 5 with
The outside mounting surface for installing annular seal of tube circle is connected, and bearing 5 is arranged on the side of pipe 2；One group of air admission hole, 3 quantity is not
2 are less than, and the distribution of circular array shape, which is arranged on another side or outer ring surface of pipe 2 according to the direction of high-pressure fluid
Or inner ring surface.
Embodiment 3
A kind of the third embodiment of ultralow temperature ring pipe sealing ring of the present utility model, as shown in Figure 7 and Figure 8, bag
Include the pipe 2 for being provided with hollow cavity 1, and one group of air admission hole 3 being arranged on pipe 2, the pipe 2 in a ring, and wherein cavity
Support member 4, turn in a ring of the support member 4 for sheet metal spiral winding is provided with body 1；The pipe 2 is pipe,
And material diameter（The external diameter of pipe cross section）For 4mm, the external diameter of ring pipe sealing ring is 6mm, the list between turn and pipe 2
Side clearance is 0.05mm；Pipe 2 is provided with bearing 5 annular in shape, the bearing 5 and the outside mounting surface for installing annular seal of tube circle
It is connected, bearing 5 is arranged on the outer ring surface of pipe 2；One group of air admission hole, 3 quantity is no less than 2, and circular array shape point
Cloth, its are arranged on the side or inner ring surface of pipe 2 according to the direction of high-pressure fluid.
Embodiment 4
A kind of 4th kind of embodiment of ultralow temperature ring pipe sealing ring of the present utility model, as shown in Figure 9 and Figure 10, bag
Include the pipe 2 for being provided with hollow cavity 1, and one group of air admission hole 3 being arranged on pipe 2, the pipe 2 in a ring, and wherein cavity
Support member 4 is provided with body 1；Support member 4 is the metal light wall pipe in a ring for being provided with opening；One group of air admission hole, 3 quantity is many
In 2, and the distribution of circular array shape, which is arranged on the side or inner ring surface or outer shroud of pipe 2 according to the direction of high-pressure fluid
Face.
The above is only preferred embodiment of the present utility model, it should be noted that for the ordinary skill of the art
For personnel, on the premise of without departing from the utility model principle, some improvement can also be made, these improvement also should be regarded as this
The protection domain of utility model.
Claims (5)
1. a kind of ultralow temperature ring pipe sealing ring, it is characterised in that：Including：It is provided with hollow cavity（1）Pipe（2）, and arrange
In pipe（2）On one group of air admission hole（3）, the pipe（2）In a ring, and its hollow cavity（1）Support member is inside provided with（4）.
2. a kind of ultralow temperature ring pipe sealing ring according to claim 1, it is characterised in that：The support member（4）For resistance to
The material diameter of annular rod or ring pipe that cryogenic material is made, annular rod or ring pipe is less than pipe（2）Bore.
3. a kind of ultralow temperature ring pipe sealing ring according to claim 1, it is characterised in that：The support member（4）For gold
The turn of category leaf spiral wound, or for being provided with the metal light wall pipe of opening, the turn or metal light wall pipe are in ring
Shape.
4. a kind of ultralow temperature ring pipe sealing ring according to claim 1, it is characterised in that：The pipe（2）It is provided with ring
The bearing of shape（5）, the bearing（5）It is connected with the outside mounting surface for installing annular seal of tube circle.
5. a kind of ultralow temperature ring pipe sealing ring according to claim 1, it is characterised in that：One group of air admission hole（3）
Quantity is no less than 2, and the distribution of circular array shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620926612.8U CN206017714U (en) | 2016-08-24 | 2016-08-24 | A kind of ultralow temperature ring pipe sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620926612.8U CN206017714U (en) | 2016-08-24 | 2016-08-24 | A kind of ultralow temperature ring pipe sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017714U true CN206017714U (en) | 2017-03-15 |
Family
ID=58250557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620926612.8U Expired - Fee Related CN206017714U (en) | 2016-08-24 | 2016-08-24 | A kind of ultralow temperature ring pipe sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439013A (en) * | 2016-08-24 | 2017-02-22 | 苏州先创流体控制技术有限公司 | Annular pipe sealing ring used for ultralow-temperature dynamic sealing and machining method thereof |
-
2016
- 2016-08-24 CN CN201620926612.8U patent/CN206017714U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439013A (en) * | 2016-08-24 | 2017-02-22 | 苏州先创流体控制技术有限公司 | Annular pipe sealing ring used for ultralow-temperature dynamic sealing and machining method thereof |
| CN106439013B (en) * | 2016-08-24 | 2018-05-04 | 苏州先创流体控制技术有限公司 | A kind of ring pipe sealing ring and its processing method for ultralow temperature dynamic sealing |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20200824 |