CN102278475A - Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid - Google Patents
Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid Download PDFInfo
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- CN102278475A CN102278475A CN201110160391XA CN201110160391A CN102278475A CN 102278475 A CN102278475 A CN 102278475A CN 201110160391X A CN201110160391X A CN 201110160391XA CN 201110160391 A CN201110160391 A CN 201110160391A CN 102278475 A CN102278475 A CN 102278475A
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Abstract
The invention discloses a dynamic sealing structure for a reciprocating movement shaft between high temperature gas and high temperature liquid. A small end of a step flange internally provided with a central hole is installed in a central hole of another flange, the two flanges are partitioned at a radial connecting part via filling materials, and are partitioned at the end of the end face via a heat insulation material board, a heat insulation ceramic coating layer coated on the reciprocating movement shaft is coaxially installed in the two flange holes; the reciprocating movement shaft at one side of a shoulder face in the step flange hole is outwardly successively provided with soft filling materials of three different materials, and then the reciprocating movement shaft is locked via screw threads, and the external side is a high temperature gas end; the reciprocating movement shaft at the other side of the shoulder face in the step flange hole is outwardly successively provided with a clamping ring limiter for cooperation of a combination sealing ring and an oblique-center spring, and the external side of the clamping ring limiter is a high temperature liquid end. The soft filling materials in the invention mainly take effects of heat insulation and seal of the high temperature gas, the combination sealing ring mainly takes an effect in sealing the high temperature liquid, and after wearing of the filling materials, sealing performance can be improved via adjustment of a locking device.
Description
Technical field
The present invention relates to a kind of movable sealing structure of reciprocating shaft, especially relate to the movable sealing structure of reciprocating shaft between a kind of high-temperature gas and high-temp liquid.
Background technique
Hydropneumatic system is worked under high temperature condition, and the sealing to high-temperature gas or liquid is a very key issue in the problem that will solve, if this problem can not be resolved, can influence the normal operation of system, even production accident can occur, and consequence is hardly imaginable.Still unmatchful at present high temperature motive sealing effective solution and device particularly exist under the operating mode of high-temperature gas and high-temp liquid at the same time.
Under some specific environments, gas temperature reaches in 500～700 ℃, and in fluid temperature to 200～300 ℃, existing seal ring product is difficult to guarantee to have good sealing effect working long hours.
Summary of the invention
The object of the present invention is to provide the movable sealing structure of reciprocating shaft between a kind of high-temperature gas and high-temp liquid, can reach in 500～700 ℃ gas temperature, the reciprocating axle in fluid temperature to 200～300 ℃ seals.
The technical solution adopted for the present invention to solve the technical problems is:
The interior small end that has the ladder flange of center hole is installed in another flange center hole, two flanges separate with heat insulation asbestos packing in joint radially, the large end face of two flanges separates with the thermal-protective material plate in axial joint, and affixed with screw bolt and nut, be coated with on the reciprocating shaft that insulating ceramic coating is coaxial to be installed in two flange holes; The reciprocating shaft of circular bead surface one side in the ladder flange hole from inside to outside is provided with after the soft packing that expanded graphite packing, copper alloy belt twine metallic stuffing and three kinds of different materials of ceramic fiber stuffing box packing successively with outside thread locking device spacing and locking, and the outside thread locking device outside is the high-temperature gas end; The reciprocating shaft of the circular bead surface opposite side in the ladder flange hole from inside to outside is provided with successively by high-temperature resistance plastice, graphite fiber, being pressed into the ring combined seal ring with the metal locking ring is used with oblique heart spring, the metal locking ring contacts with snap ring and carries out spacingly, and the snap ring outside is the high-temp liquid end.
Described expanded graphite packing and ceramic fiber stuffing box packing be for being cylindrical ring, copper alloy belt twine metallic stuffing be inner small and outside big be the frustoconic shape ring, its bus is straight line or curve.
Described ladder flange, flange, outside thread locking device, snap ring, screw bolt and nut all adopt identical high-temperature alloy material.
The beneficial effect that the present invention has is:
1 adopts combination seal, can formation temperature gradient and pressure gradient, and each stuffing box packing is worked in suitable pressure and temperature scope, guarantee stuffing box packing life-span and sealing effect, reduce to leak.
2 liquids and gases adopt seal ring respectively, can satisfy under the different conditions different with pressure with fluid temperature of gas and can both play seal action.
3 work can compress the continuation use by adjusting the outside thread locking device when a period of time, stuffing box packing had small amount of wear.
4 gas part flanges and liquid part flange separate the heat exchange that reduces gas and liquid and the further rising that causes fluid temperature with thermal-protective material.
Description of drawings
Accompanying drawing is a structural principle schematic representation of the present invention.
Among the figure: 1, reciprocating shaft, 2, high-temperature gas, 3, the outside thread locking device, 4, the ceramic fiber stuffing box packing, 5, copper alloy belt twines metallic stuffing, and 6, heat insulation asbestos packing, 7, expanded graphite packing, 8, flange, 9, bolt, 10, thermal baffle, 11, nut, 12, high-temperature resistance plastice, 13, graphite fiber, 14, metal locking ring, 15, oblique heart spring, 16, insulating ceramic coating, 17, high-temp liquid, 18, snap ring, 19, flange.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in drawings, the interior small end that has the ladder flange 8 of center hole is installed in another flange 19 center holes, two flanges separate with heat insulation asbestos packing 6 in joint radially, the large end face of two flanges separates with thermal-protective material plate 10 in axial joint, and affixed with bolt 9 and nut 11, be coated with insulating ceramic coating 16 coaxial being installed in two flange holes on the reciprocating shaft 1; The reciprocating shaft 1 of circular bead surface one side in ladder flange 8 holes from inside to outside is provided with after the soft packing that expanded graphite packing 7, copper alloy belt twine metallic stuffing 5 and 4 three kinds of different materials of ceramic fiber stuffing box packing successively with the 3 spacing and lockings of outside thread locking device, and its outside is the high-temperature gas end; The reciprocating shaft 1 of the circular bead surface opposite side in ladder flange 8 holes from inside to outside is provided with successively by high-temperature resistance plastice 12, graphite fiber 13 and 14 compactings of metal locking ring are formed combined seal rings with oblique heart spring 15, metal locking ring 14 contacts with snap ring 18 and carries out spacingly, and snap ring 18 outsides are the high-temp liquid end.
Ceramic fiber stuffing box packing 4 is adopted exotic material mainly to rise heat insulation and gas is carried out suitable seal, the gas that copper alloy belt twines the leakage minute quantity of metallic stuffing 5 and 7 pairs of ceramic fiber stuffing box packing 4 of expanded graphite packing carries out seal isolation, thereby plays seal action.Long produce wearing and tearing and can adjust outside thread locking device 3 when fluffing and compress when filler is used for the operating time.High-temp liquid partly seals the combined seal ring that adopts combination high-temperature resistance plastice 12, graphite fiber 13 and metal locking ring 14 to form and seals, and adopts oblique heart spring that surface of contact is locked.Isolate by thermal-protective material in the middle of the flange that the flange of superhigh temperature gas contact contact with high-temp liquid and seal, make superhigh temperature gas part heat can not from flange be directly delivered to high-temp liquid partly flange and cause the further rising of temperature of high-temp liquid.For guaranteeing that axle is not heated up by the heat transfer of superhigh temperature gas, shows that at the axle reciprocating shaft carrying out ceramic plated layer plays a role in insulation.
Described expanded graphite packing 7 and ceramic fiber stuffing box packing 4 be for being cylindrical ring, copper alloy belt twine metallic stuffing 5 for inner small and outside big be the frustoconic shape ring, its bus is straight line or curve, forms wedge shape, guarantees sealing effect.
Described ladder flange 8, flange 19, outside thread locking device 3, snap ring 18, bolt 9 all adopts identical high-temperature alloy material with nut 11, and guaranteeing has identical distortion under hot environment.
Claims (3)
1. the movable sealing structure of reciprocating shaft between high-temperature gas and high-temp liquid, it is characterized in that: the small end that has the ladder flange (8) of center hole in inciting somebody to action is installed in another flange (19) center hole, two flanges separate with heat insulation asbestos packing (6) in joint radially, the large end face of two flanges separates with thermal-protective material plate (10) in axial joint, and affixed with bolt (9) and nut (11), be coated with on the reciprocating shaft (1) that insulating ceramic coating (16) is coaxial to be installed in two flange holes; The reciprocating shaft (1) of circular bead surface one side in ladder flange (8) hole from inside to outside is provided with the spacing and locking with outside thread locking device (3) after the soft packing that expanded graphite packing (7), copper alloy belt twine metallic stuffing (5) and (4) three kinds of different materials of ceramic fiber stuffing box packing successively, is the high-temperature gas end outside the outside thread locking device (3); The reciprocating shaft (1) of the circular bead surface opposite side in ladder flange (8) hole from inside to outside is provided with successively by high-temperature resistance plastice (12), seal ring that graphite fiber (13) and metal locking ring (14) are pressed into and oblique heart spring (15), metal locking ring (14) contacts with snap ring (18) and carries out spacingly, and snap ring (18) outside is the high-temp liquid end.
2. the movable sealing structure of reciprocating shaft between a kind of high-temperature gas according to claim 1 and high-temp liquid, it is characterized in that: described expanded graphite packing (7) and ceramic fiber stuffing box packing (4) are for being cylindrical ring, copper alloy belt twine metallic stuffing (5) for inner small and outside big be the frustoconic shape ring,, its bus is straight line or curve.
3. the movable sealing structure of reciprocating shaft between a kind of high-temperature gas according to claim 1 and high-temp liquid, it is characterized in that: described ladder flange (8), flange (19), outside thread locking device (3), snap ring (18), bolt (9) all adopts identical high-temperature alloy material with nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110160391XA CN102278475B (en) | 2011-06-15 | 2011-06-15 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110160391XA CN102278475B (en) | 2011-06-15 | 2011-06-15 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278475A true CN102278475A (en) | 2011-12-14 |
| CN102278475B CN102278475B (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110160391XA Expired - Fee Related CN102278475B (en) | 2011-06-15 | 2011-06-15 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470768A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Carbon ring seal |
| CN105508611A (en) * | 2015-11-25 | 2016-04-20 | 南方泵业股份有限公司 | Stuffing sealing structure and plunger pump with same |
| CN107255427A (en) * | 2017-07-06 | 2017-10-17 | 天津大学 | A kind of pipe sleeve seal for high temperature bushing type flue gas heat-exchange unit |
| CN107504205A (en) * | 2017-10-17 | 2017-12-22 | 石家庄三环阀门股份有限公司 | The sealing device of piston valve and its application |
| CN108799503A (en) * | 2018-08-03 | 2018-11-13 | 张家港市隆和氨纶纱有限公司 | A kind of rotation axis seal structure in spandex production |
| CN108895163A (en) * | 2018-09-21 | 2018-11-27 | 卧龙电气南阳防爆集团股份有限公司 | A kind of compound axle sealing structure of high temperature and high speed |
| CN110185803A (en) * | 2019-05-21 | 2019-08-30 | 浙江工商大学 | Magnet fluid sealing axis with heat-insulated axis |
Citations (6)
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| CN2208126Y (en) * | 1995-01-29 | 1995-09-20 | 鹿彪 | Thermal elastic packing device |
| JP2000337519A (en) * | 1999-05-27 | 2000-12-05 | Nok Corp | Sealing-up device |
| CN2575404Y (en) * | 2002-08-26 | 2003-09-24 | 中冶集团重庆钢铁设计研究总院 | Pipe-menders |
| US20050253340A1 (en) * | 2000-04-13 | 2005-11-17 | Ashbridge & Roseburgh Inc. | Sealing apparatus having sequentially engageable seals |
| JP2010014143A (en) * | 2008-07-01 | 2010-01-21 | Nok Corp | Sealing device |
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | Dynamic seal structure of screw shaft of underwater pressure-bearing shell |
-
2011
- 2011-06-15 CN CN201110160391XA patent/CN102278475B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208126Y (en) * | 1995-01-29 | 1995-09-20 | 鹿彪 | Thermal elastic packing device |
| JP2000337519A (en) * | 1999-05-27 | 2000-12-05 | Nok Corp | Sealing-up device |
| US20050253340A1 (en) * | 2000-04-13 | 2005-11-17 | Ashbridge & Roseburgh Inc. | Sealing apparatus having sequentially engageable seals |
| CN2575404Y (en) * | 2002-08-26 | 2003-09-24 | 中冶集团重庆钢铁设计研究总院 | Pipe-menders |
| JP2010014143A (en) * | 2008-07-01 | 2010-01-21 | Nok Corp | Sealing device |
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | Dynamic seal structure of screw shaft of underwater pressure-bearing shell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470768A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Carbon ring seal |
| CN103470768B (en) * | 2013-08-30 | 2015-12-02 | 西安交通大学苏州研究院 | A kind of carbon ring seal |
| CN105508611A (en) * | 2015-11-25 | 2016-04-20 | 南方泵业股份有限公司 | Stuffing sealing structure and plunger pump with same |
| CN107255427A (en) * | 2017-07-06 | 2017-10-17 | 天津大学 | A kind of pipe sleeve seal for high temperature bushing type flue gas heat-exchange unit |
| CN107504205A (en) * | 2017-10-17 | 2017-12-22 | 石家庄三环阀门股份有限公司 | The sealing device of piston valve and its application |
| CN108799503A (en) * | 2018-08-03 | 2018-11-13 | 张家港市隆和氨纶纱有限公司 | A kind of rotation axis seal structure in spandex production |
| CN108895163A (en) * | 2018-09-21 | 2018-11-27 | 卧龙电气南阳防爆集团股份有限公司 | A kind of compound axle sealing structure of high temperature and high speed |
| CN110185803A (en) * | 2019-05-21 | 2019-08-30 | 浙江工商大学 | Magnet fluid sealing axis with heat-insulated axis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102278475B (en) | 2013-09-18 |
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