CN107701800A - Ultralow temperature device disc spring loaded type wedge shape movable sealing structure - Google Patents
Ultralow temperature device disc spring loaded type wedge shape movable sealing structure Download PDFInfo
- Publication number
- CN107701800A CN107701800A CN201711162946.8A CN201711162946A CN107701800A CN 107701800 A CN107701800 A CN 107701800A CN 201711162946 A CN201711162946 A CN 201711162946A CN 107701800 A CN107701800 A CN 107701800A
- Authority
- CN
- China
- Prior art keywords
- wedge shape
- disc spring
- external valve
- nonmetallic
- ultralow temperature
- 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
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Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Abstract
Ultralow temperature device disc spring loaded type wedge shape movable sealing structure, is related to the rotating shaft movable sealing structure field for ultralow temperature device；Including nonmetallic wedge shape sealing ring, metal collar, loading disc spring group and adjust pad；Nonmetallic wedge shape sealing ring is located at the junction of external valve housing and external valve rotating shaft；Metal collar is sleeved on the outer wall of external valve rotating shaft；Metal collar is fixedly mounted in the top path groove in external valve housing；Loading disc spring group is fixedly mounted on the lower end in external valve housing and reached in the groove of footpath；And the upper surface of loading disc spring group contacts with the lower surface of metal collar；The upper surface of adjust pad contacts with loading the lower surface of disc spring group；The lower surface of adjust pad and the lower surface of external valve housing are generally aligned in the same plane；The present invention not only possesses isolation engine medium and controls the function of gas, is provided simultaneously with the features such as physical dimension is small, and light weight is highly reliable, and moulding process is simple.
Description
Technical field
The present invention relates to a kind of rotating shaft movable sealing structure field for ultralow temperature device, particularly ultralow temperature device to use
Disc spring loaded type wedge shape movable sealing structure.
Background technology
It is related to the pneumatic shaft sealing device of ultralow temperature of field of aerospace, for isolating engine medium and control gas.
Pneumatic shaft sealing device structure in conventional model, realized mostly using the series and parallel of bellows component to control gas and hair
The isolation of motivation medium, such a structure are larger for small-bore sealing device advantage.As motor power is continuously increased, valve
Bore accordingly increases, and the size and stroke of bellows are all greatly increased, it is necessary to which multiple bellows series and parallel complex mechanisms meet height
Pressure, big stroke requirement, cause kinematic system complicated, motion clamping stagnation easily occur, and make that sealing device volume is big, quality
Weight.Simultaneously large scale bellows component complex forming technology, the production cycle is longer, with the lighting of aerospace system product,
Highly reliable demand is not inconsistent.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, there is provided a kind of ultralow temperature device disc spring loaded type
Wedge-shaped movable sealing structure, not only possess isolation engine medium and control the function of gas, it is small to be provided simultaneously with physical dimension, quality
Gently, it is highly reliable, the features such as moulding process is simple.
The above-mentioned purpose of the present invention is achieved by following technical solution：
Ultralow temperature device disc spring loaded type wedge shape movable sealing structure, including nonmetallic wedge shape sealing ring, metal collar, plus
Carry disc spring group and adjust pad；Stepped recesses are provided with external valve housing；External valve rotating shaft is axially arranged on outside
The axle center of valve housing；Nonmetallic wedge shape sealing ring is cyclic structure；Nonmetallic wedge shape sealing ring is sleeved on external valve rotating shaft
Outer wall, and positioned at the junction of external valve housing and external valve rotating shaft；Metal collar is sleeved on external valve rotating shaft
Outer wall；Metal collar is fixedly mounted in the top path groove in external valve housing；And metal collar and nonmetallic wedge shape
The lower surface contact of sealing ring；Loading disc spring group is sleeved on the outer wall of external valve rotating shaft；Disc spring group is loaded to be fixedly mounted outside
Lower end in portion's valve housing is reached in the groove of footpath；And the upper surface of loading disc spring group contacts with the lower surface of metal collar；Adjustment
Pad is sleeved on the outer wall of external valve rotating shaft.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, described nonmetallic wedge shape sealing ring is
Chamfering structure；The lateral wall of nonmetallic wedge shape sealing ring and vertical direction angle are 43-47 °.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, the metal collar is cyclic structure；
The contact surface of metal collar and nonmetallic wedge shape sealing ring is the chamfering structure of response.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, described nonmetallic wedge shape sealing ring with
4-7 ° of separation angle be present in the outer wall of external valve rotating shaft, the lower surface of external valve housing tip path.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, described nonmetallic wedge shape sealing ring is adopted
Use modified polyimide material.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, described loading disc spring group uses
GH4169 or beryllium-bronze material.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, the movable sealing structure is applied to ultralow
Warm liquid hydrogen, liquid oxygen environment, environment temperature 20-500K.
In above-mentioned ultralow temperature device disc spring loaded type wedge shape movable sealing structure, the upper surface of the adjust pad is with adding
Carry the lower surface contact of disc spring group；The lower surface of adjust pad and the lower surface of external valve housing are generally aligned in the same plane.
The present invention has the following advantages that compared with prior art：
(1) present invention employs material of the modified polyimide as nonmetallic wedge shape sealing ring, realize in liquid hydrogen, liquid
Effect used at the same time in oxygen environment；
(2) big load can be born with small deformation, is saved as the structure for providing prefastening load present invention employs disc spring group
Axially mounted space has been saved, has reduced physical dimension；
(3) present invention reduces contact area, increased by setting separation angle in nonmetallic wedge shape sealing ring both ends of the surface
Seal pressure, realizes the sealing under high-pressure medium；
(4) spare part of the present invention is few, and moulding process is simple, and the long-life can also be realized while can shortening the production cycle
Highly reliable sealing.
Brief description of the drawings
Fig. 1 is disc spring loaded type wedge shape movable sealing structure schematic diagram of the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The present invention uses disc spring loaded type wedge shape movable sealing structure, can effectively replace traditional sylphon seal, realizes dynamic
It is sealing device miniaturization, lightweight, highly reliable, while structure innovation is carried out to valve hinges dynamic sealing technology；Dynamic sealing
Structure is applied to ultralow temperature liquid hydrogen, liquid oxygen environment, environment temperature 20-500K.
It is as shown in Figure 1 disc spring loaded type wedge shape movable sealing structure schematic diagram, as seen from the figure, ultralow temperature device is added with disc spring
Load type wedge shape movable sealing structure, it is characterised in that：Including nonmetallic wedge shape sealing ring 1, metal collar 2, loading disc spring group 3 and adjust
Whole pad 4；Stepped recesses are provided with external valve housing 5；External valve rotating shaft 6 is axially arranged on external valve housing 5
Axle center；Nonmetallic wedge shape sealing ring 1 is cyclic structure；Nonmetallic wedge shape sealing ring 1 is sleeved on the outer of external valve rotating shaft 6
Wall, and positioned at external valve housing 5 and the junction of external valve rotating shaft 6；Metal collar 2 is sleeved on external valve rotating shaft 6
Outer wall；Metal collar 2 is fixedly mounted in the top path groove in external valve housing 5；And metal collar 2 and nonmetallic wedge
The lower surface contact of V-shaped ring 1；Loading disc spring group 3 is sleeved on the outer wall of external valve rotating shaft 6；Load disc spring group 3 and fix peace
Lower end in external valve housing 5 is reached in the groove of footpath；And the upper surface and the lower surface of metal collar 2 of loading disc spring group 3
Contact；Adjust pad 4 is sleeved on the outer wall of external valve rotating shaft 6, and the upper surface of adjust pad 4 is with loading under disc spring group 3
Surface contacts；The lower surface of adjust pad 4 and the lower surface of external valve housing 5 are generally aligned in the same plane.
Wherein, nonmetallic wedge shape sealing ring 1 is chamfering structure；The lateral wall and vertical direction of nonmetallic wedge shape sealing ring 1
Angle is 43-47 °.Metal collar 2 is cyclic structure；The contact surface of metal collar 2 and nonmetallic wedge shape sealing ring 1 is response
Chamfering structure.Nonmetallic wedge shape sealing ring 1 and the outer wall of external valve rotating shaft 6, the lower surface of the top path of external valve housing 5
4-7 ° of separation angle be present.Nonmetallic wedge shape sealing ring 1 uses modified polyimide material.Loading disc spring group 3 uses
GH4169 or beryllium-bronze material.
Load the effect that disc spring group 3 provides sealing force, its structure uses pairing combination, be characterized in fatigue limit compared with
Height, deflection under same load is larger, is easy to adjust.The upper end of loading disc spring group 3 and end separately design supporting plane, prevent
When cusp touches with flat face, there is cut after more tasks, the phenomenon for causing 3 positions to offset.Metal collar 2 is power transmission machine
Structure, the contact angle with nonmetallic wedge shape sealing ring 1 is about 43-47 °, for will load what disc spring group loading disc spring group 3 provided
Axis sealing, it is converted into axially and radially two component and passes to nonmetallic wedge shape sealing ring 1, make nonmetallic wedge shape sealing ring
1 upper surface compresses the end face of external valve housing 5, while internal diameter lateral surface compressing external valve rotating shaft 6, realizes external valve rotating shaft 6
Sealed with 5 liang of external valve housing.Nonmetallic wedge shape sealing ring 1 exists with external valve rotating shaft 6 and external valve housing 5
Certain separation angle, for reducing sealing area, increase seal pressure, improve sealing effectiveness.Disc spring loaded type wedge shape is dynamic close
The adjusting method of the prefastening load of seal structure is to increase adjust pad 4 in loading disc spring group 3 bottom, by changing adjust pad 4
Thickness, change disc spring decrement, so as to change disc spring group load.The key of the technical scheme is the choosing of disc spring group load
Take, nonmetallic wedge shape sealing ring and the compatibility of the sealing contact angle of axial plane/seal face, material and liquid hydrogen/oxygen.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (8)
1. ultralow temperature device disc spring loaded type wedge shape movable sealing structure, it is characterised in that：Including nonmetallic wedge shape sealing ring
(1), metal collar (2), loading disc spring group (3) and adjust pad (4)；Stepped recesses are provided with external valve housing (5)；Outside
Portion's valve hinges (6) are axially arranged on the axle center of external valve housing (5)；Nonmetallic wedge shape sealing ring (1) is cyclic structure；
Nonmetallic wedge shape sealing ring (1) is sleeved on the outer wall of external valve rotating shaft (6), and is located at external valve housing (5) and external valve
The junction of door pivot (6)；Metal collar (2) is sleeved on the outer wall of external valve rotating shaft (6)；Metal collar (2) is fixedly mounted
In top path groove in outside valve housing (5)；And metal collar (2) and the following table of nonmetallic wedge shape sealing ring (1)
Face contacts；Loading disc spring group (3) is sleeved on the outer wall of external valve rotating shaft (6)；Loading disc spring group (3) is fixedly mounted on external valve
Lower end in gate housing (5) is reached in the groove of footpath；And the upper surface of loading disc spring group (3) contacts with the lower surface of metal collar (2)；
Adjust pad (4) is sleeved on the outer wall of external valve rotating shaft (6).
2. ultralow temperature device according to claim 1 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
Nonmetallic wedge shape sealing ring (1) be chamfering structure；The lateral wall of nonmetallic wedge shape sealing ring (1) is with vertical direction angle
43-47°。
3. ultralow temperature device according to claim 2 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
Metal collar (2) is cyclic structure；The contact surface of metal collar (2) and nonmetallic wedge shape sealing ring (1) is the chamfering knot of response
Structure.
4. ultralow temperature device according to claim 3 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
The outer wall of nonmetallic wedge shape sealing ring (1) and external valve rotating shaft (6), the lower surface of external valve housing (5) top path
4-7 ° of separation angle be present.
5. ultralow temperature device according to claim 4 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
Nonmetallic wedge shape sealing ring (1) use modified polyimide material.
6. ultralow temperature device according to claim 5 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
Loading disc spring group (3) use GH4169 or beryllium-bronze material.
7. ultralow temperature device according to claim 6 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
Movable sealing structure is applied to ultralow temperature liquid hydrogen, liquid oxygen environment, environment temperature 20-500K.
8. ultralow temperature device according to claim 1 disc spring loaded type wedge shape movable sealing structure, it is characterised in that：It is described
The upper surface of adjust pad (4) contacts with the lower surface of loading disc spring group (3)；The lower surface of adjust pad (4) and external valve
The lower surface of housing (5) is generally aligned in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162946.8A CN107701800A (en) | 2017-11-21 | 2017-11-21 | Ultralow temperature device disc spring loaded type wedge shape movable sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162946.8A CN107701800A (en) | 2017-11-21 | 2017-11-21 | Ultralow temperature device disc spring loaded type wedge shape movable sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701800A true CN107701800A (en) | 2018-02-16 |
Family
ID=61180462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711162946.8A Pending CN107701800A (en) | 2017-11-21 | 2017-11-21 | Ultralow temperature device disc spring loaded type wedge shape movable sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747037A (en) * | 2019-10-31 | 2021-05-04 | 新疆金风科技股份有限公司 | Shafting structure, sealing assembly and wind generating set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841511A1 (en) * | 1996-11-08 | 1998-05-13 | Pfannenschmidt, Erhard, Ing.grad. | Rotary valve |
| CN1920363A (en) * | 2005-08-23 | 2007-02-28 | 浙江华夏阀门有限公司 | Ball valve and cam sealing and keystone ring sealing |
| CN202674508U (en) * | 2012-07-25 | 2013-01-16 | 浙江博恩自控阀门有限公司 | Ball valve |
| CN105034386A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Sealed 3D printer spray head |
| CN207539437U (en) * | 2017-11-21 | 2018-06-26 | 北京航天动力研究所 | A kind of ultralow temperature device disc spring loaded type wedge shape movable sealing structure |
-
2017
- 2017-11-21 CN CN201711162946.8A patent/CN107701800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841511A1 (en) * | 1996-11-08 | 1998-05-13 | Pfannenschmidt, Erhard, Ing.grad. | Rotary valve |
| CN1920363A (en) * | 2005-08-23 | 2007-02-28 | 浙江华夏阀门有限公司 | Ball valve and cam sealing and keystone ring sealing |
| CN202674508U (en) * | 2012-07-25 | 2013-01-16 | 浙江博恩自控阀门有限公司 | Ball valve |
| CN105034386A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Sealed 3D printer spray head |
| CN207539437U (en) * | 2017-11-21 | 2018-06-26 | 北京航天动力研究所 | A kind of ultralow temperature device disc spring loaded type wedge shape movable sealing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747037A (en) * | 2019-10-31 | 2021-05-04 | 新疆金风科技股份有限公司 | Shafting structure, sealing assembly and wind generating set |
| CN112747037B (en) * | 2019-10-31 | 2023-04-07 | 新疆金风科技股份有限公司 | Shafting structure, sealing assembly and wind generating set |
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