CN113346685A - Method for removing flaky flexible foreign matters in nuclear power generator rotor - Google Patents
Method for removing flaky flexible foreign matters in nuclear power generator rotor Download PDFInfo
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- CN113346685A CN113346685A CN202010445950.0A CN202010445950A CN113346685A CN 113346685 A CN113346685 A CN 113346685A CN 202010445950 A CN202010445950 A CN 202010445950A CN 113346685 A CN113346685 A CN 113346685A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004804 winding Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 7
- 239000011111 cardboard Substances 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 5
- 239000011087 paperboard Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Cleaning In General (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A method for removing flaky flexible foreign matters in a nuclear power generator rotor. The clearing method comprises the following steps: step S1, observing foreign matters attached to the inner wall of the air duct by an observation tool; and step S2, winding the foreign matter into a cylinder shape by a picking tool and then directly drawing out the foreign matter from the vent hole at the end part of the fan seat. By adopting the cleaning method, the flaky flexible foreign matters in the air duct (air duct) in the rotor can be quickly taken out in colleges and universities under the condition that the fan seat and the air duct are not dismounted, and the foreign matters can be ensured not to be introduced for two times, so that the overhaul cost is greatly reduced, the overhaul period is shortened, and the economic loss is reduced.
Description
Technical Field
The invention relates to the technical field of nuclear power station maintenance, in particular to a method for removing flaky flexible foreign matters in a nuclear power generator rotor.
Background
The QFSN-1100-4 type 1100MW nuclear power generator is used as important equipment of a nuclear power station, and the safety and the stability of the operation of the nuclear power station are guaranteed to be very important. The applicant finds that during overhaul, when the nuclear power generator rotor of the type is subjected to extraction inspection, a large-sized sheet-shaped flexible foreign matter is occasionally found in an air duct (air duct) inside the rotor, and the size of the foreign matter is length x width x thickness: 1250X 400X 1 mm. The foreign matters are positioned in the rotor air duct and have larger size, so that the foreign matters cannot be directly taken out from the vent holes of the fan seat. The method adopted heretofore is generally to return the generator rotor to the factory, remove four groups of fan seats and air ducts, and then take out the foreign matters. It is to be understood that the generator rotor weighs 185 tons and is 14862mm long, and must be transported by sea, and the marine transportation and processing in a factory takes about 15 days. The overhaul cost is greatly increased, the overhaul construction period is prolonged, the unit is prolonged for 15 days and is connected to the grid for power generation, and serious economic loss is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for removing flaky flexible foreign matters in a rotor of a nuclear power generator, which can quickly take out the flaky flexible foreign matters in an air duct (air duct) in the rotor in colleges and universities without dismantling a fan seat and the air duct and can ensure that the foreign matters are not introduced for two times, thereby greatly reducing overhaul cost, shortening overhaul period and reducing economic loss.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a method for removing flaky flexible foreign matters in a nuclear power generator rotor, wherein the flaky flexible foreign matters are attached to the inner wall of an air duct of the rotor, and the method for removing flaky flexible foreign matters comprises the following steps:
step S1, observing foreign matters attached to the inner wall of the air duct by an observation tool;
and step S2, winding the foreign matter into a cylinder shape by a picking tool and then directly drawing out the foreign matter from the vent hole at the end part of the fan seat.
By adopting the cleaning method, the foreign matters are directly drawn out from the ventilation holes at the end part of the fan seat after being wound into a cylindrical shape. The fan seat and the air duct do not need to be dismantled in the whole process, so that the cleaning efficiency is greatly improved; moreover, the foreign matter is taken out completely, so that the foreign matter is not introduced twice.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, the step S2 comprises the following steps:
step S21, taking a circular tube with the length of L and the diameter of D;
step S22, opening an open slot with length x and width y at one end of the round tube, wherein y is larger than the thickness T of the foreign body;
step S23, extending the steel pipe into the air guide cylinder through the vent hole of the fan seat;
step S24, when the opening end of the opening groove of the steel pipe reaches the position of the foreign matter, the foreign matter is inserted into the opening groove of the steel pipe through angle adjustment;
step S25 of rotating the steel pipe to gradually roll the foreign matter into a cylindrical shape;
and step S26, slowly pulling the steel tube to enable the foreign matters to pass through the vent holes of the fan base along with the steel tube and be taken out.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, in step S22, the opening end of the opening groove is widened.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, in step S22, the surface roughening treatment is performed on the wall surface of the open slot.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, in the step S24, the opening end of the opening groove of the steel pipe is aligned to the proper insertion point of the foreign matter through angle adjustment, the distance D from the proper insertion point to the edge of the foreign matter meets the condition that D is not less than D and not more than Z, and Z is the radial distance between the inner wall of the air duct and the rotor body.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, the value of L is 2000mm, and the value of D is 20 mm.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, the value of x is 200mm, and the value of width y is 2 mm.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, the step S22 is further included in the process of additionally arranging a handle at the other end of the circular tube.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, the step S1 comprises the following steps:
step S11, taking a plastic straight pipe with the outer diameter smaller than the inner diameter of the vent hole;
step S12, inserting a spring into the plastic straight pipe;
step S13, bending the plastic straight pipe into a plastic bent pipe;
step S14, extending the plastic bent pipe into the air guide cylinder through the vent hole;
and step S15, putting the endoscope probe into the plastic bent pipe from one end of the plastic bent pipe to observe foreign matters attached to the inner wall of the air guide cylinder.
In the method for removing the flaky flexible foreign matter in the nuclear power generator rotor, in the step S11, a plurality of plastic straight pipes are taken; in step S13, bending the straight plastic tubes into bent plastic tubes, wherein the bent angles of the bent plastic tubes are different from each other; in step S14, the plastic bent pipes are respectively inserted into the air guide duct through the vent holes.
The method for removing the flaky flexible foreign matter in the nuclear power generator rotor can achieve the following beneficial effects: the clearing method comprises the following steps: step S1, observing foreign matters attached to the inner wall of the air duct by an observation tool; and step S2, winding the foreign matter into a cylinder shape by a picking tool and then directly drawing out the foreign matter from the vent hole at the end part of the fan seat. By adopting the cleaning method, the flaky flexible foreign matters in the air duct (air duct) in the rotor can be quickly taken out in colleges and universities under the condition that the fan seat and the air duct are not dismounted, and the foreign matters can be ensured not to be introduced for two times, so that the overhaul cost is greatly reduced, the overhaul period is shortened, and the economic loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a schematic structural view of a generator rotor according to the present invention;
FIG. 2 is a schematic view of the internal structure of the air duct and the fan base according to the present invention;
FIG. 3 is a photograph of a foreign substance according to the present invention;
FIG. 4 is a schematic end view of a round tube according to the present invention;
FIG. 5 is a schematic side view of a round tube according to the present invention;
FIG. 6 is a schematic view showing a state in which a foreign object is inserted into a round tube according to the present invention;
FIG. 7 is a schematic view showing the state of the foreign matter inserted into the round tube according to the present invention (II).
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
First, those skilled in the art will know that:
the rotor of the QFSN-1100-4 type 1100MW nuclear power generator is 14862mm long and weighs 185 tons. The steam end of the rotor mainly comprises a steam end front coupling wheel (namely a coupling), a fan seat, an air duct, a steam end guard ring and the like. The air duct is connected with 4 groups of fan seats, and the inner diameter of the air duct is larger than that of the fan seats. The axial length of the air duct is 1089mm, and the inner diameter is 1292 mm; the axial length of the fan seat is 1259mm, and the inner diameter is 1223 mm; the fan base has 20 ventilation holes at one end connected with the air guide cylinder, and each ventilation hole has the area of about 152 x 76mm (see fig. 1 and 2). During normal operation, under the effect of an eight-level fan, cold air in the fan enters the rotor from 20 ventilation holes at the end part of the fan seat, passes through the air guide cylinder and then reaches the end part of the steam end protective ring, so that the end part of the rotor and the straight line section bar are cooled, and finally hot air enters the cooler from the air gap of the stator and the rotor.
The foreign matter in the rotor is an electrical paper board, the interior of the air duct is in an active state, and the size of the foreign matter is length multiplied by width multiplied by thickness: 1250X 400X 1mm, a weight of 0.46kG (see FIG. 3). Referring to fig. 2, the paper board is located inside the wind guide cylinder at the steam end of the generator rotor, and since the inner diameter of the wind guide cylinder is larger than that of the fan base, the middle area inside the wind guide cylinder can be observed only by checking the area of the wind guide cylinder through the vent holes at the end of the fan base, and the condition of the inner wall surface of the wind guide cylinder cannot be observed (similar to the situation that the inner wall of a large circular ring cannot be observed by observing the inner wall of the large circular ring through a small circular hole 1.2m long). The cardboard with the thickness of 1mm is tightly attached to the inner wall surface of the air duct under the action of the elasticity of the cardboard, so that the flaky flexible foreign matters attached to the inner wall surface of the air duct are difficult to observe by the conventional method. If not handling this cardboard, along with the operation of equipment, the cardboard will warp gradually cracked, and the fritter cardboard that cracked formation will get into rotor bar wind channel in, in case get into inside the rotor bar wind channel and will not take out to cause the bar wind channel to block up, the unable heat dissipation of rotor during the operation, finally lead to equipment overheat to burn out.
Due to the complexity of the rotor structure, the area of the air duct, i.e. the position of the cardboard, needs to be reached by the vent holes with a smaller cross section, 152 x 76mm in area and 1259mm in length. The difficulty of cutting the paperboard into fragments by using the scissors is also high, and meanwhile, the cut fragments are difficult to clean up, so that foreign matters are easily introduced secondarily. The cardboard is relatively large in size and difficult to remove from the vents at the ends of the fan base. In view of this, manufacturers propose to pull out four sets of fan base and air duct and then take out the foreign matter. If the operation is carried out in this way, the operation can be completed only in the offshore power generation plant, the operation needs to be carried out by sea and returned to the plant, and the operation period of the offshore transportation and treatment in the plant needs about 15 days. The overhaul cost is greatly increased, the overhaul construction period is prolonged, and serious economic loss is caused by the grid-connected power generation of the unit after 15 days of delay.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "front", "back", and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named a second component, and similarly, a second component may also be named a first component, without departing from the scope of the present invention.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
The embodiment provides a method for removing flaky flexible foreign matters in a nuclear power generator rotor, wherein the flaky flexible foreign matters are attached to the inner wall of an air duct of the rotor, and the method comprises the following steps:
step S1, observing foreign matters attached to the inner wall of the air duct by an observation tool;
and step S2, winding the foreign matter into a cylinder shape by a picking tool and then directly drawing out the foreign matter from the vent hole at the end part of the fan seat.
By adopting the cleaning method, the foreign matters are directly drawn out from the ventilation holes at the end part of the fan seat after being wound into a cylindrical shape. The fan seat and the air duct do not need to be dismantled in the whole process, so that the cleaning efficiency is greatly improved; moreover, the foreign matter is taken out completely, so that the foreign matter is not introduced twice.
In this embodiment, the step S1 includes the following steps:
step S11, taking a plastic straight pipe with the outer diameter smaller than the inner diameter of the vent hole; the plastic straight pipe is a PVC plastic pipe with the length of 2500 mm;
step S12, inserting a spring into the plastic straight pipe;
step S13, bending the plastic straight pipe into a plastic bent pipe; after the PVC plastic pipe is radially heated, the PVC plastic pipe can be bent into plastic bent pipes with various lengths and angles;
step S14, extending the plastic bent pipe into the air guide cylinder through the vent hole;
and step S15, putting the endoscope probe into the plastic bent pipe from one end of the plastic bent pipe to observe foreign matters attached to the inner wall of the air guide cylinder.
In this embodiment, in step S11, a plurality of the straight plastic pipes are taken; in step S13, bending the straight plastic tubes into bent plastic tubes, wherein the bent angles of the bent plastic tubes are different from each other; in step S14, the plastic bent pipes are respectively inserted into the air guide duct through the vent holes. Therefore, the foreign matters in the air duct can be observed from multiple directions and angles through the plastic bent pipes.
It should be noted that, in order to take out the foreign matter inside the air duct, it is first necessary to determine the position and the state of the foreign matter inside the air duct, and since the vent hole is long and the internal structure of the air duct is complex, the foreign matter inside the air duct cannot be observed in all directions by using the conventional steering probe. The step S1 provided in this embodiment can completely and completely determine the position and state of the foreign object inside the air guiding duct.
In this embodiment, the step S2 includes the following steps:
step S21, taking a circular tube with the length of L and the diameter of D; here, L takes the value of 2000mm, D takes the value of 20 mm; here, the circular tube is a steel tube having a circular cross section.
Step S22, opening an open slot with length x and width y at one end of the round tube, wherein y is larger than the thickness T of the foreign body; here, x is 200mm and width y is 2 mm. As mentioned above, the thickness T of the foreign matter is 1 mm. Referring to fig. 4 and 5, one end of the circular tube is provided with two open grooves, and the two open grooves are on the same axial plane.
Step S23, extending the steel pipe into the air guide cylinder through the vent hole of the fan seat;
step S24, when the open end of the open groove of the steel pipe reaches the position of the foreign matter, the foreign matter is inserted into the open groove of the steel pipe by angle adjustment (see fig. 6 and 7);
step S25 of rolling the steel pipe to gradually roll the foreign matter into a cylindrical shape having a plurality of layers;
and step S26, slowly pulling the steel tube to enable the foreign matters to pass through the vent holes of the fan base along with the steel tube and be taken out.
In this embodiment, in the step S22, the opening end of the opening groove is widened. Specifically, the opening end of the opening groove may be chamfered so that the foreign matter can be smoothly inserted into the opening groove.
In this embodiment, in step S22, the groove wall surface of the open groove is subjected to surface roughening treatment. The roughness of the wall surface of the open slot is large enough, so that the friction between the wall surface of the open slot of the round tube and the foreign matter and the pressing force between the cylindrical foreign matter per se can be enhanced, the foreign matter can be driven to move synchronously when the round tube is pulled, and the foreign matter is prevented from being separated from the round tube.
In this embodiment, in the step S24, the opening end of the opening slot of the steel tube is aligned to an appropriate insertion point of the foreign object through angle adjustment, a distance D between the appropriate insertion point and the edge of the foreign object satisfies a condition that D is not less than D and not more than Z, and Z is a radial distance between the inner wall of the air duct and the rotor body. Here, the radial distance Z between the inner wall of the air duct and the rotor body is 92mm, and therefore, the distance d from the proper insertion point to the foreign matter edge satisfies 20mm < d < 92 mm. Preferably, d is 50mm, that is, the distance from the proper insertion point to the nearest edge of the foreign object is 50mm, so as to ensure that the foreign object can be smoothly wound into a cylindrical shape.
In this embodiment, in the step S22, a process of adding a handle to the other end of the circular tube is further included. Therefore, the round pipe can be conveniently rotated at a constant speed by rotating the handle.
In conclusion, by adopting the cleaning method, the flaky flexible foreign matters in the air duct (air duct) in the rotor can be rapidly taken out in colleges and universities under the condition that the fan seat and the air duct are not dismounted, and the foreign matters can be ensured not to be introduced for two times, so that the overhaul cost is greatly reduced, the overhaul period is shortened, and the economic loss is reduced.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for removing flaky flexible foreign matters in a nuclear power generator rotor, wherein the flaky flexible foreign matters are attached to the inner wall of an air duct of the rotor, and the method is characterized by comprising the following steps:
step S1, observing foreign matters attached to the inner wall of the air duct by an observation tool;
and step S2, winding the foreign matter into a cylinder shape by a picking tool and then directly drawing out the foreign matter from the vent hole at the end part of the fan seat.
2. The method for removing sheet-like flexible foreign matters inside a nuclear power generator rotor as claimed in claim 1, wherein the step S2 comprises the steps of:
step S21, taking a circular tube with the length of L and the diameter of D;
step S22, opening an open slot with length x and width y at one end of the round tube, wherein y is larger than the thickness T of the foreign body;
step S23, extending the steel pipe into the air guide cylinder through the vent hole of the fan seat;
step S24, when the opening end of the opening groove of the steel pipe reaches the position of the foreign matter, the foreign matter is inserted into the opening groove of the steel pipe through angle adjustment;
step S25 of rotating the steel pipe to gradually roll the foreign matter into a cylindrical shape;
and step S26, slowly pulling the steel tube to enable the foreign matters to pass through the vent holes of the fan base along with the steel tube and be taken out.
3. A method for removing sheet-like flexible foreign matters inside an electric generator rotor according to claim 1, wherein in the step S22, the opening ends of the open grooves are subjected to widening processing.
4. A method for removing sheet-like flexible foreign matter inside an electric generator rotor according to claim 1, wherein in said step S22, a groove wall surface of said open groove is subjected to surface roughening treatment.
5. The method for removing sheet-like flexible foreign matters inside an electric generator rotor according to claim 1, wherein in the step S24, the opening end of the opening slot of the steel tube is aligned with a proper insertion point of the foreign matters through angle adjustment, the distance D from the proper insertion point to the edge of the foreign matters meets the condition that D is not less than D and not more than Z, and Z is the radial distance between the inner wall of the air duct and the rotor body.
6. The method for removing the flaky flexible foreign matter in the rotor of the electric generator as claimed in claim 1, wherein the value of L is 2000mm, and the value of D is 20 mm.
7. The method for removing the flaky flexible foreign matter in the rotor of the electric generator as claimed in claim 6, wherein x is 200mm and y is 2 mm.
8. The method for removing sheet-like flexible foreign matters inside an electric generator rotor according to claim 1, further comprising a process of adding a handle to the other end of the circular tube in the step S22.
9. The method for removing sheet-like flexible foreign matters inside a nuclear power generator rotor as claimed in claim 1, wherein the step S1 comprises the steps of:
step S11, taking a plastic straight pipe with the outer diameter smaller than the inner diameter of the vent hole;
step S12, inserting a spring into the plastic straight pipe;
step S13, bending the plastic straight pipe into a plastic bent pipe;
step S14, extending the plastic bent pipe into the air guide cylinder through the vent hole;
and step S15, putting the endoscope probe into the plastic bent pipe from one end of the plastic bent pipe to observe foreign matters attached to the inner wall of the air guide cylinder.
10. The method for removing sheet-like flexible foreign matter inside a nuclear power generator rotor as claimed in claim 9, wherein in step S11, a plurality of said plastic straight pipes are taken; in step S13, bending the straight plastic tubes into bent plastic tubes, wherein the bent angles of the bent plastic tubes are different from each other; in step S14, the plastic bent pipes are respectively inserted into the air guide duct through the vent holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010445950.0A CN113346685B (en) | 2020-05-25 | 2020-05-25 | Method for removing flaky flexible foreign matters in nuclear power generator rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010445950.0A CN113346685B (en) | 2020-05-25 | 2020-05-25 | Method for removing flaky flexible foreign matters in nuclear power generator rotor |
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| CN113346685A true CN113346685A (en) | 2021-09-03 |
| CN113346685B CN113346685B (en) | 2022-10-18 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657853A (en) * | 1994-08-29 | 1997-08-19 | Pari Industries, Inc. | Belt conveyors having cleaning rollers |
| JP2006224067A (en) * | 2005-02-21 | 2006-08-31 | Toyota Motor Corp | Foreign matter removing apparatus and foreign matter removing method |
| JP2010221076A (en) * | 2009-03-19 | 2010-10-07 | Kaneka Corp | Device for removing foreign matter, method of removing foreign matter and sheet-like material |
| CN104662782A (en) * | 2012-09-21 | 2015-05-27 | 日产自动车株式会社 | Device for producing cracking magnet |
| JP2016181956A (en) * | 2015-03-23 | 2016-10-13 | トヨタ自動車株式会社 | Foreign matter removing device for rotor for electric motor |
| CN207743821U (en) * | 2018-02-02 | 2018-08-17 | 王建涛 | The special taking foreign body bar of generator unit stator thorax |
| CN110811490A (en) * | 2019-11-19 | 2020-02-21 | 武汉佑康科技有限公司 | Directional elastic deflection structure of flexible catheter of endoscope |
-
2020
- 2020-05-25 CN CN202010445950.0A patent/CN113346685B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657853A (en) * | 1994-08-29 | 1997-08-19 | Pari Industries, Inc. | Belt conveyors having cleaning rollers |
| JP2006224067A (en) * | 2005-02-21 | 2006-08-31 | Toyota Motor Corp | Foreign matter removing apparatus and foreign matter removing method |
| JP2010221076A (en) * | 2009-03-19 | 2010-10-07 | Kaneka Corp | Device for removing foreign matter, method of removing foreign matter and sheet-like material |
| CN104662782A (en) * | 2012-09-21 | 2015-05-27 | 日产自动车株式会社 | Device for producing cracking magnet |
| JP2016181956A (en) * | 2015-03-23 | 2016-10-13 | トヨタ自動車株式会社 | Foreign matter removing device for rotor for electric motor |
| CN207743821U (en) * | 2018-02-02 | 2018-08-17 | 王建涛 | The special taking foreign body bar of generator unit stator thorax |
| CN110811490A (en) * | 2019-11-19 | 2020-02-21 | 武汉佑康科技有限公司 | Directional elastic deflection structure of flexible catheter of endoscope |
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| CN113346685B (en) | 2022-10-18 |
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