CN101725560B - Shrink-on equipment of housing of rotor of nuclear main pump - Google Patents
Shrink-on equipment of housing of rotor of nuclear main pump Download PDFInfo
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- CN101725560B CN101725560B CN2009103098867A CN200910309886A CN101725560B CN 101725560 B CN101725560 B CN 101725560B CN 2009103098867 A CN2009103098867 A CN 2009103098867A CN 200910309886 A CN200910309886 A CN 200910309886A CN 101725560 B CN101725560 B CN 101725560B
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Abstract
The invention relates to shrink-on equipment of a housing of a rotor of a nuclear main pump, which is mainly used for the shrink-on of the housing of the rotor of the nuclear main pump and belongs to the field of nuclear power. The shrink-on equipment of the housing of the rotor of the nuclear main pump comprises three parts which are a heating module, a shrink-on module and a control module. The automatic control of the furnace temperature in a heating furnace is realized by the programming of a computer, and the housing of the rotor is heated to a shrink-on state; the action of each transmission mechanism which is connected in the shrink-on equipment by an industrial personal computer through a cable conductor is controlled by the programming of the computer so as to drive each component in the equipment to synergistically work and finish the shrink-on of the housing of the rotor of the nuclear main pump together. The invention has high degree of automation in the shrink-on process by the control of the programming of the computer, reaches the requirements of high speed and high accuracy, can ensure the assembly accuracy of the housing of the rotor, has high stability and high reliability and is suitable for the quick and accurate shrink-on of the housing of the rotor of the nuclear main pump.
Description
Technical field
The present invention relates to a kind of shrink-on equipment of rotor shielding sleeve of nuclear main pump, be mainly used in the shrink-on of rotor shielding sleeve of nuclear main pump, belong to the nuclear power field.
Background technique
The nuclear main pump is unique rotating equipment in nuclear power station one circuit system, is the heart of nuclear island, belongs to nuclear safety one-level equipment, is one of key equipment of pressurized-water reactor nuclear power plant.For the non-active nuclear reactor of the third generation, what it adopted is a kind of canned motorpump with shield electric machine, motor in the pump is vertical, water-cooled, cage type induction motor, the rotor of motor is wrapped in the corrosion resistant Rotor can, Rotor can is used for preventing that rotor bar from contacting with reactor coolant, thereby rotor bar and system are kept apart.
The corrosion resistant nonmagnetic metal Hastelloy of Rotor can material selection C-276 alloy, its processing technology mainly are divided into blanking shearing, roll bending shaping, welding, heat is orthopedic and assemble several operations.For assembling procedure and since Rotor can be no matching gap hot jacket on rotor iron core, so need adopt shrink-on technology when assembling, this also is an operation the most key in the Rotor can assembling process.
Recognize from pertinent literature, the shrink-on method that Rotor can generally adopts is, vertical being placed in the vertical heater of housing heated, after reaching the shrink-on state, the rotor that will have guide head with high speed lifting crane trembles the Rotor can that inserts in the oven, 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 can, also there are problems in the shrink-on that is applied to examine main pump rotor housing.At first, rotor shielding sleeve of nuclear main pump has ultra-thin big L/D ratio, and its shrink-on stroke is big; Secondly, the rotor weight of nuclear main pump is very big, and hoisting mechanism is controlled very inconvenient; Simultaneously in view of the critical role of Rotor can in the nuclear main pump, whole shrink-on technological requirement is accurate fast, guarantee the shrink-on precision of rotor shielding sleeve of nuclear main pump, and technology should have high stability and high reliability, and the shrink-on technology of finishing Rotor can with high speed lifting crane lifting rotor then is difficult to reach above-mentioned requirements; Moreover, if in the high-temperature atmosphere of oven, finish the shrink-on technology of Rotor can, also inevitably can the performance of rotor be exerted an influence.
Summary of the invention
The shrink-on equipment that the purpose of this invention is to provide a kind of rotor shielding sleeve of nuclear main pump, its automaticity height can be realized the fast accurate shrink-on technology of rotor shielding sleeve of nuclear main pump, and have high stability and high reliability.
Technical solution of the present invention is: a kind of shrink-on equipment of rotor shielding sleeve of nuclear main pump, form by heating module, shrink-on module and control module three parts.
Described heating module comprises furnace shell, thermal insulation layer, furnace lining, electric heating element, fire door, fire door elevator mechanism, baffle plate, baffle plate supporting frame and grate, furnace shell is fixed on the grate by being threaded, furnace lining is to be built into by the light weight fireclay brick with loop configuration that is fired into, be installed in the furnace shell, aluminosilicate refractory fiber is filled in the crack of furnace shell and furnace lining as thermal insulation layer, banded electric heating element is suspended on the inwall of furnace lining, the fire door elevator mechanism is installed on the grate, can make fire door do lifting and horizontal motion along guide rail.In addition, the supporting structure of support rotor housing also is installed in the oven, and supporting structure adopts two baffle plates and baffle plate supporting frame, and wherein the baffle plate supporting frame is fixed on furnace bottom, baffle plate can be done the one dimension horizontal slip along the slideway of baffle plate supporting frame upper surface under the effect of baffle plate driving mechanism.
Described shrink-on module comprises guide head, support ring, heat-preservation cylinder, shrink-on annulus, shrink-on accessory and rotor supports seat, heat-preservation cylinder by two semicircular cylinders to form a complete cylinder together, upper end cap is a dome that the center is porose, heat-preservation cylinder is enclosed within the outside of Rotor can, support ring is two semicircular ring structures, seat is on support ring together for heat-preservation cylinder and Rotor can, and the internal diameter of support ring is greater than the internal diameter of Rotor can; The shrink-on annulus is under the effect of shrink-on annulus driving mechanism, can move up and down along vertical guide rail, and the location accurately, install and fix rotor above the rotor supports seat, guide head is installed on the rotor, under the effect of rotor supports seat driving mechanism, the rotor supports seat can be done the one dimension horizontal slip along guide rail.The axis of guide head, support ring, heat-preservation cylinder, shrink-on annulus, rotor and Rotor can is positioned on same the center line.In addition, the shrink-on accessory is installed in above the rotor supports seat, under the effect of shrink-on accessory driving mechanism, can do the one dimension horizontal slip along guide rail.
Described control module comprises temperature-control heat couple, temperature control instrument, process control machine and elastic cable paper, on the one hand, by process control machine, connect temperature control instrument through elastic cable paper, temperature control instrument links to each other with temperature-control heat couple again, and temperature-control heat couple is installed in the oven, on the other hand, by process control machine, be connected respectively to baffle plate driving mechanism, shrink-on annulus driving mechanism, rotor supports seat driving mechanism, shrink-on accessory driving mechanism and fire door elevator mechanism in the equipment through elastic cable paper.
Described shrink-on annulus is to inlay a pair of handle by the annulus outside of hollow out to constitute, respectively there is a circular hole that internal surface is smooth two handle ends, circle hole sleeve is on the smooth round bar that is fixed on the grate, a screw is arranged on one of them handle, be enclosed within on the screw rod of shrink-on annulus driving mechanism, under the effect of shrink-on annulus driving mechanism, the shrink-on annulus can move up and down along vertical guide rail, and the displacement of shrink-on annulus can accurately be controlled.
The dimensional range of described Rotor can: highly be 1000mm-4000mm, internal diameter is 400mm-600mm, and thickness is 0.3mm-0.6mm.
Above-mentioned technological scheme utilizes computer programming to control whole shrink-on technology, automaticity height.On the one hand, by process control machine, connect temperature control instrument through elastic cable paper, temperature control instrument links to each other with temperature-control heat couple again, temperature-control heat couple is installed in the oven, can realize the automatic control of furnace temperature in the oven Rotor can being heated to the shrink-on state by computer programming.On the other hand, by process control machine, be connected to baffle plate driving mechanism, shrink-on annulus driving mechanism, rotor supports seat driving mechanism, shrink-on accessory driving mechanism and fire door elevator mechanism in the equipment through elastic cable paper, and by their behavior of computer programming control, and then each parts collaborative work in the drive equipment, finish the fast precisely shrink-on of rotor shielding sleeve of nuclear main pump jointly.The key of the shrink-on of rotor shielding sleeve of nuclear main pump is to make by computer programming control the automaticity height of shrink-on, reaches precisely requirement fast, and guarantees high stability and high reliability with this.
The beneficial effect that the present invention reached is: the shrink-on equipment of this rotor shielding sleeve of nuclear main pump is made up of heating module, shrink-on module and control module three parts.Control the behavior of each parts in this shrink-on equipment by computer programming, and finish the fast precisely shrink-on of rotor shielding sleeve of nuclear main pump according to corresponding shrink-on step, computer programming control makes the automaticity height of shrink-on, reach precisely requirement fast, can guarantee the assembly precision of Rotor can, and 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 a kind of module diagram of shrink-on equipment of rotor shielding sleeve of nuclear main pump.
Fig. 2 is a kind of structural representation of shrink-on equipment of rotor shielding sleeve of nuclear main pump.
Fig. 3 is a kind of plan view of shrink-on equipment of rotor shielding sleeve of nuclear main pump.
Fig. 4 is the structural representation of oven in a kind of shrink-on equipment of rotor shielding sleeve of nuclear main pump.
Fig. 5 is the cross-sectional view of A-A among Fig. 3.
Fig. 6 is the structure enlarged view of B among Fig. 5.
Among the figure: 1. furnace shell, 2. thermal insulation layer, 3. furnace lining, 4. electric heating element, 5. fire door, 6. fire door elevator mechanism, 7. baffle plate, 8. baffle plate supporting frame, 9. grate, 10. guide head, 11. support rings, 12. heat-preservation cylinders, 13. the shrink-on annulus, 14. rotors, 15. shrink-on accessories, 16. the rotor supports seat, 17. temperature-control heat couple, 18. temperature control instruments, 19. process control machine, 20. elastic cable papers, 21. Rotor cans.
Embodiment
Fig. 1 shows a kind of module diagram of shrink-on equipment of rotor shielding sleeve of nuclear main pump, is made up of heating module, shrink-on module and control module, and control module is started to control making usefulness to heating module and shrink-on module.
Among Fig. 2 and Fig. 3, process control machine 19 connects temperature control instrument 18 through elastic cable paper 20, and temperature control instrument 18 links to each other with temperature-control heat couple 17, and temperature-control heat couple 17 is installed in the oven.Furnace shell 1 is fixed on the upper surface of grate 9 by being threaded, fire door driving mechanism 6 is installed in below the grate 9.Guide head 10 is installed in rotor 14 upper ends, and rotor 14 is fixed on the rotor supports seat 16, and rotor supports seat 16 can be done the one dimension horizontal slip along guide rail.Shrink-on annulus 13 is enclosed within on the screw rod of shrink-on annulus driving mechanism, can move up and down along guide rail.Shrink-on accessory 15 is installed on the rotor supports seat 16, can do the one dimension horizontal slip along guide rail.Process control machine 19 is connected respectively to baffle plate driving mechanism, shrink-on annulus driving mechanism, rotor supports seat driving mechanism, shrink-on accessory driving mechanism and fire door elevator mechanism 6 in the shrink-on equipment through elastic cable paper 20.
Among Fig. 4 and Fig. 5, furnace lining 3 is built into by the light weight fireclay brick with loop configuration that is fired into, and be installed in the furnace shell 1, thermal insulation layer 2 is aluminosilicate refractory fiber to be filled in the crack of furnace shell 1 and furnace lining 3 form, banded electric heating element 4 is suspended on the inwall of furnace lining 3, and fire door 5 is installed in the lower end of furnace shell 1.
Baffle plate supporting frame 8 is fixed on furnace bottom, and baffle plate 7 is on the baffle plate supporting frame 8, and can do the one dimension horizontal slip.Heat-preservation cylinder 12 is enclosed within the outside of Rotor can 21, heat-preservation cylinder 12 and Rotor can 21 together seat on support ring 11, in the heating period, support ring 11 with heat-preservation cylinder 12 and Rotor can 21 seat together on baffle plate 7.
Fig. 6 is the structure enlarged view of B among Fig. 5.
Said apparatus is applied to the shrink-on of rotor shielding sleeve of nuclear main pump 21.Whole process can be divided into three phases, that is: early-stage preparations stage, heating period in mid-term and last shrink-on stage.Specific operation are as follows:
(1) preparatory stage mainly is to adjust each position component in Rotor can 21, rotor 14 and the shrink-on equipment, for ensuing heating period and shrink-on stage prepare.
At first, utilize fire door elevator mechanism 6 that fire door 5 is descended along upright guide rail, after the upper edge for the treatment of fire door 5 is left furnace shell 1 fully, fire door 5 is slided along horizontal guide rail, open fully until fire door 5.11 of support rings are enclosed within heat-preservation cylinder 12 outside of Rotor can 21 again on shrink-on annulus 13, with heat-preservation cylinder 12 and Rotor can 21 seat together on support ring 11.The axis that will guarantee support ring 11, heat-preservation cylinder 12, shrink-on annulus 13 and Rotor can 21 in the installation process is positioned on the same center line.
Then, by computer programming control, under the effect of shrink-on annulus driving mechanism, shrink-on annulus 13 drives the guide rail rising of seat support ring 11, heat-preservation cylinder 12 and Rotor can 21 in the above along both sides, enters in the oven.When the upper-end surface of shrink-on annulus 13 has just surpassed the upper-end surface of oven internal baffle 7, stop to rise, at this moment, under the effect of baffle plate driving mechanism, two baffle plates 7 are along the slideway of the baffle plate supporting frame 8 upper surfaces direction to Rotor can 21, do the one dimension horizontal slip, the external diameter that surpasses support ring 11 until the inboard of baffle plate 7, shrink-on annulus 13 transfers to descend, because the barrier effect of baffle plate 7, shrink-on annulus 13 will at a time leave seat support ring 11 in the above, stop immediately descending, at this moment, support ring 11, heat-preservation cylinder 12 and Rotor can 21 together the seat on baffle plate 7.
Next, rotor 14 is installed on the rotor supports seat 16 fixes, again guide head 10 is installed in rotor 14 upper ends.Under the effect of rotor supports seat driving mechanism, rotor supports seat 16 drives rotors 14 and guide head 10 and does horizontal slip along guide rail, guarantees that the rotor 14 and the axis of Rotor can 21 are positioned on the same center line.
At last, shrink-on annulus 13 continues to drop to and is lower than fire door elevator mechanism 6, utilizes fire door elevator mechanism 6 that fire door 5 is closed again.
(2) heating period
Utilize computer programming, give Rotor can 21 heating, after having experienced intensification and being incubated two stages, Rotor can 21 is heated to the shrink-on state by electric heating element 4, temperature-control heat couple 17, temperature control instrument 18 and necessary elastic cable paper 20.
(3) the shrink-on stage
At first, after Rotor can 21 is heated to the shrink-on state, utilize fire door elevator mechanism 6 that fire door 5 is opened.
Then, under the effect of shrink-on annulus driving mechanism, shrink-on annulus 13 rises along guide rail, till support ring 11 lower end surfaces are pushed up in the upper-end surface of shrink-on annulus 13, utilize the baffle plate driving mechanism to remove baffle plate 7 this moment, shrink-on annulus 13 descends along guide rail immediately, and support ring 11, heat-preservation cylinder 12 and Rotor can 21 are owing to the action of gravity meeting descends with shrink-on annulus 13.
Next, under the effect of guide head 10, Rotor can 21 successfully packs into rotor 14, accurately control the displacement of shrink-on annulus 13 by computer programming, make Rotor can 21 accurately drop to predefined position, this moment, Rotor can 21 was enclosed within on the rotor 14 fully, and because the barrier effect of guide head 10, in the shrink-on process, the dome of heat-preservation cylinder 12 upper ends is pressed down, and stays on the guide head 10 of rotor 14 upper ends.At this moment, shrink-on annulus 13 also need continue to descend, and can remove smoothly up to support ring 11.
At last, under the effect of shrink-on accessory driving mechanism, shrink-on accessory 15 drives support ring 11 and heat-preservation cylinder 12 is done horizontal slip along guide rail to the both sides of Rotor can 21, make two semicircle support rings 11 separated from one another, it is separated from one another simultaneously also to drive two semicircle heat-preservation cylinders 12, away from Rotor can 21.Subsequently, under the effect of cross-ventilation heat exchange, Rotor can 21 will cool off fast, and binds round tightly on rotor 14, has finished the fast accurate shrink-on technology of rotor shielding sleeve of nuclear main pump 21.
Claims (3)
1. the shrink-on equipment of a rotor shielding sleeve of nuclear main pump is made up of heating module, shrink-on module and control module three parts, it is characterized in that:
Described heating module comprises furnace shell (1), thermal insulation layer (2), furnace lining (3), electric heating element (4), fire door (5), fire door elevator mechanism (6), baffle plate (7), baffle plate supporting frame (8) and grate (9), furnace shell (1) is fixed on by being threaded on the grate (9), furnace lining (3) is to be built into by the light weight fireclay brick with loop configuration that is fired into, be installed in the furnace shell (1), aluminosilicate refractory fiber is filled in the crack of furnace shell (1) and furnace lining (3) as thermal insulation layer (2), banded electric heating element (4) is suspended on the inwall of furnace lining (3), fire door elevator mechanism (6) is installed on the grate (9), can make fire door (5) do lifting and horizontal motion along guide rail; In addition, the supporting structure of support rotor housing (21) also is installed in the oven, supporting structure adopts two baffle plates (7) and baffle plate supporting frame (8), wherein baffle plate supporting frame (8) is fixed on furnace bottom, baffle plate (7) can be done the one dimension horizontal slip along the slideway of baffle plate supporting frame (8) upper surface under the effect of baffle plate driving mechanism;
Described shrink-on module comprises guide head (10), support ring (11), heat-preservation cylinder (12), shrink-on annulus (13), shrink-on accessory (15) and rotor supports seat (16), heat-preservation cylinder (12) by two semicircular cylinders to form a complete cylinder together, upper end cap is a dome that the center is porose, heat-preservation cylinder (12) is enclosed within the outside of Rotor can (21), support ring (11) is two semicircular ring structures, seat is on support ring (11) together for heat-preservation cylinder (12) and Rotor can (21), and the internal diameter of support ring (11) is greater than the internal diameter of Rotor can (21); Shrink-on annulus (13) is under the effect of shrink-on annulus driving mechanism, can move up and down along vertical guide rail, and the location accurately, install and fix rotor (14) above the rotor supports seat (16), guide head (10) is installed on the rotor (14), under the effect of rotor supports seat driving mechanism, rotor supports seat (16) can be done the one dimension horizontal slip along guide rail; The axis of guide head (10), support ring (11), heat-preservation cylinder (12), shrink-on annulus (13), rotor (14) and Rotor can (21) is positioned on same the center line; In addition, shrink-on accessory (15) is installed in above the rotor supports seat (16), under the effect of shrink-on accessory driving mechanism, can do the one dimension horizontal slip along guide rail;
Described control module comprises temperature-control heat couple (17), temperature control instrument (18), process control machine (19) and elastic cable paper (20), on the one hand, by process control machine (19), connect temperature control instrument (18) through elastic cable paper (20), temperature control instrument (18) links to each other with temperature-control heat couple (17) again, temperature-control heat couple (17) is installed in the oven, on the other hand, by process control machine (19), be connected respectively to baffle plate driving mechanism in the equipment through elastic cable paper (20), shrink-on annulus driving mechanism, rotor supports seat driving mechanism, shrink-on accessory driving mechanism and fire door elevator mechanism (6).
2. the shrink-on equipment of a kind of rotor shielding sleeve of nuclear main pump according to claim 1, it is characterized in that: described shrink-on annulus (13) is to inlay a pair of handle by the annulus outside of hollow out to constitute, respectively there is a circular hole that internal surface is smooth two handle ends, circle hole sleeve is on the smooth round bar that is fixed on the grate (9), a screw is arranged on one of them handle, be enclosed within on the screw rod of shrink-on annulus driving mechanism, under the effect of shrink-on annulus driving mechanism, shrink-on annulus (13) can move up and down along vertical guide rail, and the displacement of shrink-on annulus (13) can accurately be controlled.
3. the shrink-on equipment of a kind of rotor shielding sleeve of nuclear main pump according to claim 1 is characterized in that: the dimensional range of described Rotor can (21): highly be 1000mm-4000mm, internal diameter is 400mm-600mm, and thickness is 0.3mm-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098867A CN101725560B (en) | 2009-11-18 | 2009-11-18 | Shrink-on equipment of housing of rotor of nuclear main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098867A CN101725560B (en) | 2009-11-18 | 2009-11-18 | Shrink-on equipment of housing of rotor of nuclear main pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101725560A CN101725560A (en) | 2010-06-09 |
| CN101725560B true CN101725560B (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103098867A Active CN101725560B (en) | 2009-11-18 | 2009-11-18 | Shrink-on equipment of housing of rotor of nuclear main pump |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951084A (en) * | 2010-09-21 | 2011-01-19 | 大连理工大学 | Inversed hot sheathing technology of nuclear main pump rotor shielding can |
| 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 |
| 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 |
| CN103095023B (en) * | 2013-01-16 | 2015-04-08 | 大连理工大学 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
| 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 |
| CN111649007B (en) * | 2020-06-09 | 2021-07-02 | 三门核电有限公司 | Large-scale shielding main pump disassembling device and disassembling process in radioactive environment |
| 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 |
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