CN103095023B - Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve - Google Patents
Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve Download PDFInfo
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- CN103095023B CN103095023B CN201310014221.XA CN201310014221A CN103095023B CN 103095023 B CN103095023 B CN 103095023B CN 201310014221 A CN201310014221 A CN 201310014221A CN 103095023 B CN103095023 B CN 103095023B
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 claims description 33
- 238000012856 packing Methods 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 abstract 1
- 239000006052 feed supplement Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000856 hastalloy Inorganic materials 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention provides a sealing structure for high-pressure seamless attachment in a nuclear main pump sartor shielding sleeve, and belongs to the nuclear electrical field. The sealing structure is mainly used for sealing of the high-pressure seamless attachment in the nuclear main pump sartor shielding sleeve and comprises an upper end sealing structure and a lower end sealing structure, wherein the lower end sealing structure is a fixing sealing end, the outer diameter of a lower inner supporting guiding ring is slightly smaller than the inner diameter of the sartor shielding sleeve, the thickness of a lower sealing ring is larger than that of the gap between the outer wall of the shielding sleeve and the inner wall of the lower inner supporting guiding ring, a pressing ring presses the lower sealing ring into the gap, and the gap between the inner wall of the shielding sleeve and the outer wall of the lower inner supporting guiding ring is eliminated by means of deformation and expansion of the lower sealing ring caused by stress, so that the shielding sleeve can be tightly attached to the outer surface of the lower inner supporting guiding ring. The sealing structure for the high-pressure seamless attachment in the nuclear main pump sartor shielding sleeve lowers the requirement on the size accuracy for welding the shielding sleeve, and is capable of achieving axial feed supplement of the shielding sleeve and controlling the attachment thickness. The sealing condition can be observed in the assembly process, the structure is simple, the implement is convenient, and the sealing is reliable.
Description
Technical field
The present invention relates to a kind of core main pump motor stator can inner high voltage zero-clearance plastic deformation and attach Fine Boring hermetically-sealed construction, be mainly used in the fitting tight of core main pump stator can, belong to nuclear power field.
Background technology
Nuclear power equipment center main pump is nuclear power station " heart ".The non-dynamic role nuclear reactor of the third generation, employing be a kind of canned pump with shield electric machine, the stator can being attached at core main pump shield electric machine stator inner surface is for preventing the liquid medium etch stator core carried and stator winding.
Core main pump stator can is the thin cylinder processed through shearing, roll bending, welding, bulging and the operation such as orthopedic by the nonmagnetic metal Hastelloy Hastelloy C-276 of erosion resistant, its thickness is less than 0.5mm, but length reaches 3m, external diameter is greater than 560 mm, belongs to typical big L/D ratio ultrathin component.The zero-clearance plastic deformation of using inner high voltage forming principle can realize between stator can and stator attaches, but needs a kind of sealing means reliably of design.
It is shaping that inner high voltage moulding process is widely used in auto parts, and this technique is mainly for the part of minor diameter, large wall thickness, and encapsulating method is comparatively simple, and it is very difficult to realize the sealing that between the ultra-thin stator can of big L/D ratio and stator, inner high voltage zero-clearance attaches.
Sealing means traditionally, has two kinds of methods can realize sealing.One first sealing ring and inner support is assembled, and then relies on external force to be inserted between sealing ring and inside support ring by stator can, because housing is very thin very long, easily cause housing fold to lose efficacy, thus do not reach desirable effect.Another kind of mode is assembled stator can and inner support, then directly clamp-ons between outer support inwall and stator can outer wall by sealing ring from end, same like this fold and damage inactivation housing may extruded.
Seminar has invented a kind of novel big L/D ratio ultra-thin stator can inner high voltage zero-clearance that is suitable for and has attached the hermetically-sealed construction assembled, the hermetically-sealed construction namely taken various forms at two ends: lower end hermetically-sealed construction and upper end hermetically-sealed construction for this reason.Sealing structure eliminates ultra-thin stator can in seal process, easily occurs the hidden danger that Folding Deformation destroys, reduce the requirement to welding housing machining accuracy, housing axial supplement can be realized, control to attach thickness, structure is simple, it is convenient to implement, and can realize the selection design of the sealing ring size under different rated pressure simultaneously, be suitable for thin-walled parts inner high voltage forming seal.
Summary of the invention
The object of this invention is to provide a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction, the inner high voltage zero-clearance particularly for the ultra-thin stator can of big L/D ratio attaches the sealing of assembling.Present invention, avoiding the Folding Deformation caused because thin-walled parts is stressed in seal process to destroy, hermetically-sealed construction is simple, easy for installation, and whether the sealing effectiveness that can visually see meets the requirements, the sealing ring of different size can be selected according to the processing situation of stator can, ensure that the reliability of sealing.
The technical solution adopted in the present invention is: a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction, is made up of lower end hermetically-sealed construction and upper end hermetically-sealed construction two parts.Described lower end hermetically-sealed construction comprises lower inner support guide ring, lower sealing ring, lower outside support guide ring, pressure ring, O RunddichtringO, bolt, packing ring and pad, bottom end cover is fixed on experimental bench by set bolt, lower outside support guide ring is placed on bottom end cover, lower inner support guide ring is arranged on bottom end cover by support tube, then stator can is enclosed within lower inner support guide ring from support tube upper end, by lower sealing ring by pressure ring press-in stator can outer wall and the gap that formed of lower outside support guide ring inwall, the lower sealing ring making thickness be greater than gap width is clamp-oned in gap, form sealing.Then with bolt, lower outside support guide ring, pressure ring, stator core model are fixed on experimental bench.Described upper end hermetically-sealed construction comprises inner support guide ring, upper outside support guide ring, with the upper end cover of tooth, bolt, packing ring, pad, upper sealing ring and O RunddichtringO, after lower seal structure installment, upper inner support guide ring is inserted on support tube, upper outside support guide ring set is entered outside stator can, then upper sealing ring is inserted in gap that stator can outer wall and upper outside support guide ring inwall formed, finally upper end cover is inserted on support tube, by tighting a bolt, the tooth on upper end cover is made to be pressed in gap by upper sealing ring, make the sealing of its radial expansion realization to stator can.
The material of described lower sealing ring is polyurethane, and the thickness of lower sealing ring is greater than the gap that stator can outer wall and lower outside support guide ring inwall are formed, and sealing ring thickness designs according to stator can dimensioned precision and internal pressure size.
The material of described upper sealing ring is polyurethane, and the thickness of upper sealing ring is less than the gap that stator can outer wall and upper outside support guide ring inwall are formed, but its length is greater than the length of stator can extension.
The cross section of described lower sealing ring is wedge shape, and following wall thickness size is gap width, in axial direction the up linear increase of thickness.
Described lower inner support guide ring outer wall upper end, lower outside support guide ring inwall upper end, upper inner support guide ring outer wall lower end, upper outside support guide ring inwall upper end have chamfering.
The beneficial effect that the present invention reaches is: this big L/D ratio ultra-thin stator can inner high voltage zero-clearance attaches assembling hermetically-sealed construction and carries out different sealing means at shield member two ends, i.e. upper end hermetically-sealed construction and lower end hermetically-sealed construction.Lower end hermetically-sealed construction allows lower inner support guide ring external diameter to be slightly less than stator can internal diameter, the gap between housing inwall and lower inner support guide ring outer wall is eliminated by the expansion of lower sealing ring compressive deformation, make it to be close to lower inner support guide ring outer surface, thus avoid thin-wall stator housing that conventional seals mode may cause and produce fold when mounted and destroy and the change of material property, solve the thin-wall stator housing problem that axially long distance suit is difficult, also reduce the requirement to stator can weld size precision simultaneously; Outside gap during the sealing of this outer lower end between interior outer support is exposed to, add the intuitive of sealing effectiveness observation and the reliability of sealing in assembling process.Upper end hermetically-sealed construction can realize stator can axial supplement by the height changing upper sealing ring, avoids the excessive thinning of housing, can realize the control attaching thickness.Owing to not needing to change other scantlings, only according to the requirement of the processing dimension of stator can and limit internal pressure power, need can select the size of sealing ring used, save production cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further described
Fig. 1 is a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction overall schematic.
Fig. 2 is lower end hermetically-sealed construction A schematic diagram.
Fig. 3 is upper end hermetically-sealed construction B schematic diagram.
Fig. 4 is lower sealing ring axial, cross-sectional view.
In figure: 1. bolt, 2. packing ring, 3. pad, 4. upper end cover, 5. upper sealing ring, 6. upper outside support guide ring, 7. goes up inner support guide ring, 8.O RunddichtringO, 9. exhaust outlet, 10. stator core model, 11. stator cans, 12. support tubes, 13. tight fixed bolts, 14. bottom end covers, 15. set bolts, 16. lower outside support guide rings, 17. lower sealing rings, 18. pressure rings, 19. times inner support guide rings, 20. oil drain outs, 21. pouring orifices.
Embodiment
Attach assembling below in conjunction with technical scheme with core main pump stator can inner high voltage zero-clearance to study as example describes the application in detail.
Be core main pump stator can inner high voltage zero-clearance shown in Fig. 1 and attach assembling sealed structural representation.Be made up of lower end hermetically-sealed construction A and upper end hermetically-sealed construction B.
Figure 2 shows that lower end hermetically-sealed construction A partial enlarged drawing, by lower inner support guide ring 19, lower sealing ring 17, lower outside support guide ring 16, pressure ring 18, O RunddichtringO 8, bolt 1, packing ring 2 and pad 3 form, bottom end cover 14 is fixed on experimental bench by set bolt 15, lower outside support guide ring 16 is placed on bottom end cover 14, lower inner support guide ring 19 is arranged on bottom end cover 14 by support tube 12, then stator can 11 is enclosed within lower inner support guide ring 19 from support tube 12 upper end, lower sealing ring 17 is pressed in the gap that stator can 11 outer wall and lower outside support guide ring 16 inwall formed by pressure ring 18, the lower sealing ring 17 making thickness be greater than gap width is clamp-oned in gap, form sealing.With bolt 1, lower outside support guide ring 16, pressure ring 18, stator core model 10 are fixed on experimental bench.
Polyurethane Wearing Ring axial cross section as shown in Figure 4 herein, and the right straight flange represents the inner surface of sealing ring, i.e. after sealing and the surface of stator can wall contacts, and it is of a size of: lower end 6mm × upper end 8mm × high 20mm.
Figure 3 shows that upper end hermetically-sealed construction B partial enlarged drawing, by upper inner support guide ring 7, upper outside support guide ring 6, with the upper end cover 4 of tooth, bolt 1, packing ring 2, pad 3, upper sealing ring 5, O RunddichtringO 8 forms, after lower seal structure installment, upper inner support guide ring 7 is inserted on support tube 12, upper outside support guide ring 6 is inserted in outside stator can 11, then upper sealing ring 5 is inserted in gap that stator can 11 outer wall and upper outside support guide ring 6 inwall formed, finally upper end cover 4 is inserted on support tube 12, by tighting a bolt 1, the tooth on upper end cover 4 is made to be pressed in gap by upper sealing ring 5, make its radial expansion and the sealing realized stator can 11.
This Polyurethane Wearing Ring is of a size of: thick 5.5mm × long 20mm.
Calculate according to the bearing capacity of the vital parts such as bolt, stator core, support tube, select each up and down 12 bolt groups of GB6170 M16x110-10.9 by fastening for whole stator module as a whole, the sealing means of stator can is that two ends are fixed, and the inner high voltage zero-clearance plastic deformation realizing core main pump motor stator can and stator attaches assembles and sealing.
Claims (4)
1. a core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction, be made up of upper end hermetically-sealed construction and lower end hermetically-sealed construction two parts, it is characterized in that: described lower end hermetically-sealed construction comprises lower inner support guide ring (19), lower sealing ring (17), lower outside support guide ring (16), pressure ring (18), O RunddichtringO (8), bolt (1) and packing ring (2), bottom end cover (14) is fixed on experimental bench by set bolt (15), lower outside support guide ring (16) is placed on bottom end cover (14), lower inner support guide ring (19) is arranged on bottom end cover (14) by support tube (12), then stator can (11) is enclosed within lower inner support guide ring (19) from support tube (12) upper end, by lower sealing ring (17) by pressure ring (18) press-in stator can (11) outer wall and the gap that formed of lower outside support guide ring (16) inwall, the lower sealing ring (17) making thickness be greater than gap width is clamp-oned in gap, form sealing, with bolt (1) by lower outside support guide ring (16), pressure ring (18), stator core model (10) is fixed on experimental bench, described upper end hermetically-sealed construction comprises inner support guide ring (7), upper outside support guide ring (6), with the upper end cover (4) of tooth, bolt (1), packing ring (2), pad (3), upper sealing ring (5) and O RunddichtringO (8), after lower seal structure installment, upper inner support guide ring (7) is inserted on support tube (12), upper outside support guide ring (6) is inserted in stator can (11) outside, then in gap upper sealing ring (5) insertion stator can (11) outer wall and upper outside support guide ring (6) inwall formed, finally upper end cover (4) is inserted on support tube (12), by tight a bolt (1), the tooth on upper end cover (4) is made to be pressed in gap by upper sealing ring (5), its radial expansion is made to realize sealing.
2. a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction according to claim 1, it is characterized in that: the material of described lower sealing ring (17) is polyurethane, the thickness of lower sealing ring (17) is greater than the gap that stator can (11) outer wall and lower outside support guide ring (16) inwall are formed.
3. a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction according to claim 1, it is characterized in that: the material of described upper sealing ring (5) is polyurethane, the thickness of upper sealing ring (5) will be slightly less than the gap that stator can (11) outer wall and upper outside support guide ring (6) inwall are formed, but it is highly greater than the length of stator can (11) extension.
4. a kind of core main pump stator can inner high voltage zero-clearance attaching hermetically-sealed construction according to claim 1,2 or 3, is characterized in that: described lower inner support guide ring (19) outer wall upper end, lower outside support guide ring (16) inwall upper end, upper inner support guide ring (7) outer wall lower end, upper outside support guide ring (6) inwall upper end have chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014221.XA CN103095023B (en) | 2013-01-16 | 2013-01-16 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014221.XA CN103095023B (en) | 2013-01-16 | 2013-01-16 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN103095023A CN103095023A (en) | 2013-05-08 |
| CN103095023B true CN103095023B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310014221.XA Expired - Fee Related CN103095023B (en) | 2013-01-16 | 2013-01-16 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384674B (en) * | 2014-09-30 | 2016-07-06 | 哈尔滨电气动力装备有限公司 | The motor-driven tungsten argon arc welding method of main pump motor rotor shielding sleeve and rotor end bell |
| CN109067068B (en) * | 2018-08-27 | 2023-09-01 | 中船重工电机科技股份有限公司 | Compression-resistant structure of deepwater propulsion motor |
| CN109854527B (en) * | 2019-01-30 | 2023-09-08 | 三门核电有限公司 | Locking shielding tool for shielding main pump |
| CN113193709A (en) * | 2021-04-20 | 2021-07-30 | 厦门钨业股份有限公司 | Motor shielding sleeve corrugation forming process, encapsulating process and shielding sleeve |
| CN113258698A (en) * | 2021-06-02 | 2021-08-13 | 温岭正峰数字机电科技有限公司 | Canned motor pump motor |
| CN113686506B (en) * | 2021-08-25 | 2024-01-16 | 广州机械科学研究院有限公司 | Sealing performance detection device of sealing element |
| CN113963820A (en) * | 2021-10-22 | 2022-01-21 | 中国原子能科学研究院 | Fast reactor equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726433A (en) * | 1969-10-25 | 1973-04-10 | Rolls Royce | Seal release for a pressure vessel |
| CN2539020Y (en) * | 2002-05-22 | 2003-03-05 | 中国科学院沈阳自动化研究所 | High-pressure sealer |
| CN101725560A (en) * | 2009-11-18 | 2010-06-09 | 大连理工大学 | Shrink-on equipment of housing of rotor of nuclear main pump |
| CN102619813A (en) * | 2012-04-02 | 2012-08-01 | 大连理工大学 | Hydraulic system for precisely arranging stator shielding sleeve of nuclear main pump in gapless attachment way |
-
2013
- 2013-01-16 CN CN201310014221.XA patent/CN103095023B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726433A (en) * | 1969-10-25 | 1973-04-10 | Rolls Royce | Seal release for a pressure vessel |
| CN2539020Y (en) * | 2002-05-22 | 2003-03-05 | 中国科学院沈阳自动化研究所 | High-pressure sealer |
| CN101725560A (en) * | 2009-11-18 | 2010-06-09 | 大连理工大学 | Shrink-on equipment of housing of rotor of nuclear main pump |
| CN102619813A (en) * | 2012-04-02 | 2012-08-01 | 大连理工大学 | Hydraulic system for precisely arranging stator shielding sleeve of nuclear main pump in gapless attachment way |
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| CN103095023A (en) | 2013-05-08 |
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Granted publication date: 20150408 Termination date: 20180116 |