CN101951084A - Inversed hot sheathing technology of nuclear main pump rotor shielding can - Google Patents
Inversed hot sheathing technology of nuclear main pump rotor shielding can Download PDFInfo
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- CN101951084A CN101951084A CN201010289392XA CN201010289392A CN101951084A CN 101951084 A CN101951084 A CN 101951084A CN 201010289392X A CN201010289392X A CN 201010289392XA CN 201010289392 A CN201010289392 A CN 201010289392A CN 101951084 A CN101951084 A CN 101951084A
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- shielding sleeve
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- main pump
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- 238000004321 preservation Methods 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910000856 hastalloy Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses an inversed hot sheathing technology of a nuclear main pump rotor shielding can, belonging to the field of nuclear power. The hot sheathing technology can finish the assembly of the main pump rotor shielding can. Firstly, the utilization of a high-precision positioning device and a high-precision and high-speed lifting crane is the premise for finishing quick and accurate hot sheathing of the nuclear main pump rotor shielding can; secondly, the inversed hot sheathing technology can effectively reduce space occupied by a hot sheathing device so as to lower cost; thirdly, compared with a hoisting rotor, a lighter heat insulation barrel and a lighter rotor shielding can are hoisted to finish hot sheathing, which is easy and convenient for precise positioning and speed control; finally, the heat insulation barrel is utilized to widen the requirement on hot sheathing speed; in the hot sheathing process, the heat insulation barrel performs the rounding action on the rotor shielding can so as to effectively lower the failure possibility of the hot sheathing of the nuclear main pump rotor shielding can; and thus, the technology has high stability and high reliability.
Description
Technical field
The present invention relates to a kind of shrink-on technology of flip-over type rotor shielding sleeve of nuclear main pump, be mainly used in the assembling of rotor shielding sleeve of nuclear main pump, belong to the nuclear power field.
Background technology
The nuclear main pump is unique slewing in nuclear power station one circuit system, is the heart of nuclear island, belongs to nuclear safety one-level equipment.For the non-active nuclear reactor of the third generation, what it adopted is the canned pump of band shield electric machine, motor in the pump is vertical, water-cooled, cage type induction motor, the outer surface of rotor is with rotor shielding sleeve, the material of rotor shielding sleeve is corrosion resistant nonmagnetic metal Hastelloy C-276 alloy, can prevent that rotor bar from contacting with reactor coolant.The manufacturing of rotor shielding sleeve and assembly quality will directly influence the normal operation of nuclear main pump, be the critical components in the nuclear main pump.
The manufacturing of rotor shielding sleeve of nuclear main pump and assembling process comprise sheet material shearing, roll curved, welding, bulging and the orthopedic and several operations of shrink-on.Wherein, preceding four steps can be finished the accurate manufacturing of rotor shielding sleeve, guarantee that it has certain dimensional accuracy and roundness, for next step assembling is prepared, and shrink-on can be finished the final assembling of rotor shielding sleeve, is the most key operation in the manufacturing of whole rotor shielding sleeve of nuclear main pump and the assembling process.
The shrink-on of rotor shielding sleeve of nuclear main pump belongs to the interference assembling.Before shrink-on, rotor shielding sleeve and rotor should keep certain magnitude of interference.During heating, rotor shielding sleeve free wxpansion, when being heated to uniform temperature, the interference of rotor shielding sleeve and rotor disappears, and keeps certain clearance between them.At this moment, rotor shielding sleeve is enclosed within on the rotor fast, when cool to room temperature, rotor shielding sleeve just can tightly bind round on rotor.
From document, recognize, the shrink-on method that rotor shielding sleeve adopts usually is, vertical being placed in the vertical heater of rotor shielding sleeve heated, after reaching the shrink-on temperature, with the rotor shielding sleeve in the high speed lifting crane lifting rotor vibration insertion heating furnace, finish behind the shrink-on again that integral body hangs out, carry out quick air cooling.
Though the method is widely used in the shrink-on of rotor shielding sleeve, also there are problems in the shrink-on of using it for rotor shielding sleeve of nuclear main pump.At first, compare with common rotor shielding sleeve, rotor shielding sleeve of nuclear main pump has ultra-thin big L/D ratio, in the actual process, the design thickness of rotor shielding sleeve of nuclear main pump is about 0.5mm, and internal diameter is that length reaches 3200mm about 550mm, the shrink-on stroke is big, and this brings very big difficulty for its shrink-on technology; Secondly, the rotor weight of nuclear main pump is very big, can reach several tons of weights, it is very inconvenient to control its motion with high speed lifting crane, whole shrink-on technological requirement is accurate fast simultaneously, and technology should have high stability and high reliability, and the shrink-on of finishing rotor shielding sleeve of nuclear main pump with high speed lifting crane lifting rotor then is difficult to reach above-mentioned requirements; Moreover, if in the high-temperature atmosphere of heating furnace, finish the shrink-on of rotor shielding sleeve of nuclear main pump, also inevitably can the performance of rotor be exerted an influence.
Summary of the invention
The shrink-on technology that the purpose of this invention is to provide a kind of flip-over type rotor shielding sleeve of nuclear main pump can realize the precisely assembling fast of rotor shielding sleeve of nuclear main pump, and have high stability and high reliability.
Technical solution of the present invention: a kind of shrink-on technology of flip-over type rotor shielding sleeve of nuclear main pump is divided into preparation, heating and shrink-on three phases.
Described preparation is meant at room temperature, and heat-preservation cylinder and rotor shielding sleeve are put into heating furnace, and heat-preservation cylinder is enclosed within the outside of rotor shielding sleeve, and the outer surface of the inner surface of heat-preservation cylinder and rotor shielding sleeve fits together, and both together place the center of filler platform.Then, utilize high-precision positioner that rotor is fixed on certain altitude directly over the heating furnace, and adjust the position axis of rotor shielding sleeve, heat-preservation cylinder and rotor is positioned on same the center line, close fire door.
Described heating is meant and utilizes heating furnace that heat-preservation cylinder and rotor shielding sleeve are heated to the shrink-on temperature.
Described shrink-on is meant opens fire door, utilize high-precision high-speed lifting crane to clamp heat-preservation cylinder, heat-preservation cylinder and rotor shielding sleeve are together hung out in heating furnace, and be sleeved on the rotor fast, remove heat-preservation cylinder then, make rotor shielding sleeve cool off contraction fast, when cool to room temperature, rotor shielding sleeve just can tightly bind round on rotor, finally finishes the assembling of rotor shielding sleeve of nuclear main pump.
Described heating furnace is a pit furnace, fire door up, body of heater is positioned at underground, has effectively reduced shrink-on device occupation space.
The size range of described rotor shielding sleeve: highly be 1000mm-4000mm, internal diameter is 200mm-800mm, and thickness is 0.3mm-1.0mm.
Described heat-preservation cylinder is to be formed by the Hastelloy C-276 alloy manufacturing with the rotor shielding sleeve homogeneity, it by two semicircular cylinders to form together, the inboard of semicircular cylinder bottom has boss, and the width of boss is played a supporting role to rotor shielding sleeve less than the thickness of rotor shielding sleeve.
The size range of described heat-preservation cylinder: remove the part that the bottom has boss, the height of heat-preservation cylinder is consistent with the height of rotor shielding sleeve, and internal diameter is consistent with the external diameter of rotor shielding sleeve, and thickness is 5mm-10mm.
Described heat-preservation cylinder is enclosed within the rotor shielding sleeve outside, and the outer surface of the inner surface of heat-preservation cylinder and rotor shielding sleeve fits together.On the one hand, heat-preservation cylinder plays insulation effect to rotor shielding sleeve, guarantees in the shrink-on process, and rotor shielding sleeve can not shrink and cool off fast because of the cross-ventilation heat exchange, binds round prematurely on rotor, causes the shrink-on failure; On the other hand, the heat-preservation cylinder inner surface is the just round of standard, and thickness is much larger than rotor shielding sleeve, therefore has certain rigidity, in the shrink-on process, when utilizing high-precision high-speed lifting crane lifting heat-preservation cylinder and rotor shielding sleeve, heat-preservation cylinder plays the round effect of returning to the rotor shielding sleeve of inside so, make rotor shielding sleeve remain certain roundness, shrink-on can carry out smoothly.
The beneficial effect that the present invention reached is: the shrink-on technology of this flip-over type rotor shielding sleeve of nuclear main pump can be finished the assembling of rotor shielding sleeve of nuclear main pump.At first, the use of high-precision positioner and high-precision high-speed lifting crane is a prerequisite of finishing the fast accurate shrink-on of rotor shielding sleeve of nuclear main pump; Secondly, adopt the shrink-on technology of flip-over type effectively to reduce shrink-on device occupation space, reduced cost; Once more, compare with the lifting rotor, lighter heat-preservation cylinder and the rotor shielding sleeve of lifting weight finished shrink-on, no matter be that accurate location or speed control are all convenient and easy; At last, the requirement to shrink-on speed has been relaxed in the use of heat-preservation cylinder, and in the shrink-on process, rotor shielding sleeve being played the circle effect of returning, the probability that this has reduced the failure of rotor shielding sleeve of nuclear main pump shrink-on effectively makes technology have high stability and high reliability.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the shrink-on device schematic diagram of flip-over type rotor shielding sleeve of nuclear main pump.
Fig. 2 is heat-preservation cylinder and rotor shielding sleeve shape and a relative position schematic diagram in the shrink-on process.
Fig. 3 is the cross-sectional view of A-A among Fig. 2.
Among the figure: 1. high-precision positioner, 2. rotor, 3. fire door, 4. heating furnace, 5. heat-preservation cylinder, 6. filler platform, 7. high-precision high-speed lifting crane, 8. rotor shielding sleeve.
Embodiment
Among Fig. 1, Fig. 2 and Fig. 3, heat-preservation cylinder 5 is enclosed within the outside of rotor shielding sleeve 8, the outer surface of the inner surface of heat-preservation cylinder 5 and rotor shielding sleeve 8 fits together, both together place the center of the filler platform 6 in the heating furnace 4, rotor 2 is fixed on certain altitude directly over the heating furnace 4, and the axis of rotor shielding sleeve 8, heat-preservation cylinder 5 and rotor 2 is positioned on same the center line.
Described device above using, and, realize the assembling of rotor shielding sleeve of nuclear main pump according to the shrink-on technology of above-mentioned flip-over type rotor shielding sleeve of nuclear main pump, concrete operations are as follows:
At first, at room temperature, heat-preservation cylinder 5 is enclosed within the outside of rotor shielding sleeve 8, and the outer surface of the inner surface of heat-preservation cylinder 5 and rotor shielding sleeve 8 fits together, both together place the center of the filler platform 6 in the heating furnace 4.Utilize high-precision positioner 1 that rotor 2 is fixed on certain altitude directly over the heating furnace 4, and adjust the position axis of rotor shielding sleeve 8, heat-preservation cylinder 5 and rotor 2 is positioned on same the center line, close fire door 3.
Then, utilize heating furnace 4 that heat-preservation cylinder 5 and rotor shielding sleeve 8 are heated to the shrink-on temperature.
At last, open fire door 3, utilize high-precision high-speed lifting crane 7 to clamp heat-preservation cylinder 5, heat-preservation cylinder 5 and rotor shielding sleeve 8 are together hung out in heating furnace 4, and be sleeved on fast on the rotor 2, remove heat-preservation cylinder 5 then, make rotor shielding sleeve 8 cooling contraction fast, when cool to room temperature, rotor shielding sleeve 8 just can tightly bind round on rotor 2, finally finishes the assembling of rotor shielding sleeve of nuclear main pump 8.
Claims (5)
1. the shrink-on technology of a flip-over type rotor shielding sleeve of nuclear main pump is divided into preparation, heating and shrink-on three phases, it is characterized in that:
At first, at room temperature, heat-preservation cylinder (5) and rotor shielding sleeve (8) are put into heating furnace (4), heat-preservation cylinder (5) is enclosed within the outside of rotor shielding sleeve (8), and the outer surface of the inner surface of heat-preservation cylinder (5) and rotor shielding sleeve (8) fits together, and both together place the center of filler platform (6); Then, utilize high-precision positioner (1) that rotor (2) is fixed on certain altitude directly over the heating furnace (4), and adjust the position axis of rotor shielding sleeve (8), heat-preservation cylinder (5) and rotor (2) is positioned on same the center line, close fire door (3);
Secondly, utilize heating furnace (4) that heat-preservation cylinder (5) and rotor shielding sleeve (8) are heated to the shrink-on temperature;
At last, open fire door (3), utilize high-precision high-speed lifting crane (7) to clamp heat-preservation cylinder (5), heat-preservation cylinder (5) and rotor shielding sleeve (8) are together hung out in heating furnace (4), and be sleeved on rotor fast on (2), then, remove heat-preservation cylinder (5), make rotor shielding sleeve (8) cooling contraction fast, when cool to room temperature, rotor shielding sleeve (8) just can tightly bind round on rotor (2), finally finishes the assembling of rotor shielding sleeve of nuclear main pump (8).
2. the shrink-on technology of a kind of flip-over type rotor shielding sleeve of nuclear main pump according to claim 1 is characterized in that: described heating furnace (4) is a pit furnace, fire door (3) up, body of heater is positioned at underground.
3. the shrink-on technology of a kind of flip-over type rotor shielding sleeve of nuclear main pump according to claim 1, it is characterized in that: the size range of described rotor shielding sleeve (8): highly be 1000mm-4000mm, internal diameter is 200mm-800mm, and thickness is 0.3mm-1.0mm.
4. the shrink-on technology of a kind of flip-over type rotor shielding sleeve of nuclear main pump according to claim 1, it is characterized in that: described heat-preservation cylinder (5) is to be formed by the Hastelloy C-276 alloy manufacturing with rotor shielding sleeve (8) homogeneity, it by two semicircular cylinders to form together, the inboard of semicircular cylinder bottom has boss, and the width of boss is less than the thickness of rotor shielding sleeve (8).
5. the shrink-on technology of a kind of flip-over type rotor shielding sleeve of nuclear main pump according to claim 1, it is characterized in that: the size range of described heat-preservation cylinder (5): remove the part that the bottom has boss, height is consistent with the height of rotor shielding sleeve (8), internal diameter is consistent with the external diameter of rotor shielding sleeve (8), and thickness is 5mm-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010289392XA CN101951084A (en) | 2010-09-21 | 2010-09-21 | Inversed hot sheathing technology of nuclear main pump rotor shielding can |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010289392XA CN101951084A (en) | 2010-09-21 | 2010-09-21 | Inversed hot sheathing technology of nuclear main pump rotor shielding can |
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| CN101951084A true CN101951084A (en) | 2011-01-19 |
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| CN201010289392XA Pending CN101951084A (en) | 2010-09-21 | 2010-09-21 | Inversed hot sheathing technology of nuclear main pump rotor shielding can |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066767A (en) * | 2012-12-24 | 2013-04-24 | 哈尔滨电气动力装备有限公司 | Sleeve heating process for motor rotor shield sleeve |
| CN103084830A (en) * | 2013-01-16 | 2013-05-08 | 大连理工大学 | Nuclear main pump stator shield sleeve zero-clearance plasticity attachment precision assembly device |
| CN104393714A (en) * | 2014-11-17 | 2015-03-04 | 陕西航空电气有限责任公司 | Large-interference-amount assembly method for permanent magnet generator rotor lantern ring |
| CN105245065A (en) * | 2015-11-24 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Assembly equipment for rotor and rotor assembly method |
| CN105356688A (en) * | 2015-11-22 | 2016-02-24 | 大连理工大学 | Apparatus and method for prolonging time of heating assembling of rotor shielding sleeve of nuclear main pump |
| CN106787512A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | The accurate positioning method and device of a kind of permanent magnetism rotating shaft processing |
| CN110690797A (en) * | 2019-11-06 | 2020-01-14 | 上海航天控制技术研究所 | Device for mounting motor rotor into rotor sheath |
| CN110971093A (en) * | 2019-12-25 | 2020-04-07 | 宁波旭升汽车技术股份有限公司 | A hot set board for motor casing |
| CN113489250A (en) * | 2021-07-05 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Large-scale shielding motor flywheel shell hot sleeving process |
| CN115302188A (en) * | 2022-08-22 | 2022-11-08 | 河南中原特钢装备制造有限公司 | Core rod hot charging device and method for radial precision forging machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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2010
- 2010-09-21 CN CN201010289392XA patent/CN101951084A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 关锐等: "AP1000反应堆主泵屏蔽套制造工艺浅析", 《中国核电》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066767A (en) * | 2012-12-24 | 2013-04-24 | 哈尔滨电气动力装备有限公司 | Sleeve heating process for motor rotor shield sleeve |
| CN103066767B (en) * | 2012-12-24 | 2014-10-22 | 哈尔滨电气动力装备有限公司 | Sleeve heating process for motor rotor shield sleeve |
| CN103084830A (en) * | 2013-01-16 | 2013-05-08 | 大连理工大学 | Nuclear main pump stator shield sleeve zero-clearance plasticity attachment precision assembly device |
| CN103084830B (en) * | 2013-01-16 | 2015-07-15 | 大连理工大学 | Nuclear main pump stator shield sleeve zero-clearance plasticity attachment precision assembly device |
| CN104393714A (en) * | 2014-11-17 | 2015-03-04 | 陕西航空电气有限责任公司 | Large-interference-amount assembly method for permanent magnet generator rotor lantern ring |
| CN104393714B (en) * | 2014-11-17 | 2017-02-22 | 陕西航空电气有限责任公司 | Large-interference-amount assembly method for permanent magnet generator rotor lantern ring |
| CN105356688A (en) * | 2015-11-22 | 2016-02-24 | 大连理工大学 | Apparatus and method for prolonging time of heating assembling of rotor shielding sleeve of nuclear main pump |
| CN105245065A (en) * | 2015-11-24 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Assembly equipment for rotor and rotor assembly method |
| CN105245065B (en) * | 2015-11-24 | 2018-07-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor assembly equipment and rotor assembling method |
| CN106787512A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | The accurate positioning method and device of a kind of permanent magnetism rotating shaft processing |
| CN106787512B (en) * | 2016-12-26 | 2019-01-29 | 株洲九方装备股份有限公司 | A kind of accurate positioning method and device of the processing of permanent magnetism shaft |
| CN110690797A (en) * | 2019-11-06 | 2020-01-14 | 上海航天控制技术研究所 | Device for mounting motor rotor into rotor sheath |
| CN110971093A (en) * | 2019-12-25 | 2020-04-07 | 宁波旭升汽车技术股份有限公司 | A hot set board for motor casing |
| CN113489250A (en) * | 2021-07-05 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Large-scale shielding motor flywheel shell hot sleeving process |
| CN115302188A (en) * | 2022-08-22 | 2022-11-08 | 河南中原特钢装备制造有限公司 | Core rod hot charging device and method for radial precision forging machine |
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Application publication date: 20110119 |