CN114069987B - Manufacturing method of stator base of hydraulic generator - Google Patents
Manufacturing method of stator base of hydraulic generator Download PDFInfo
- Publication number
- CN114069987B CN114069987B CN202111279468.5A CN202111279468A CN114069987B CN 114069987 B CN114069987 B CN 114069987B CN 202111279468 A CN202111279468 A CN 202111279468A CN 114069987 B CN114069987 B CN 114069987B
- Authority
- CN
- China
- Prior art keywords
- base
- stator
- machine base
- manufacturing
- leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a method for manufacturing a stator base of a hydraulic generator, relates to the technical field of hydraulic generators, solves the technical problems of high production cost and long required production period, and comprises the following steps: processing all parts, reserving a cutting allowance of 20mm for the inner circle of each layer of ring plate, and reserving a welding shrinkage allowance of 3mm for the outer circle; respectively installing and welding a first machine base and a second machine base, and performing shot blasting coating on the inside of a sealed chamber formed by the first machine base and the second machine base; connecting the first machine base and the second machine base into a whole circle; welding a support piece at the bottom of the stator base; stress relief and flaw detection treatment are carried out on the stator base; after the allowance of the split surface of the stator base is removed, the first base and the second base are combined through the seaming block; cutting the inner circle allowance of each layer of ring plate; inspecting and marking the stator base; carrying out shot blasting and rust removal and paint spraying on the first machine base and the second machine base; the invention has the advantages of simple process, less workload and short production period.
Description
Technical Field
The invention relates to the technical field of hydraulic generators, in particular to a manufacturing method of a hydraulic generator stator base.
Background
The stator of the hydraulic generator is a static component of the hydraulic generator and consists of a base, an iron core, a winding, a copper ring, a base screw rod and the like. The base is mainly used for fixing an iron core and is circular or polygonal, the small-capacity hydraulic generator mostly adopts a cast iron round base or a box-shaped base welded by steel plates, the bases of the large-capacity hydraulic generator and the medium-capacity hydraulic generator are welded and assembled by the steel plates, and the forces acting on the bases have the following functions: tangential force generated by rated torque and radial force caused by thermal expansion of the iron core in operation; tangential force generated by short-circuit torque when a stator winding is in short circuit and unidirectional magnetic tension caused by short circuit of two points of a rotor winding; for the suspension type hydraulic generator, the base also bears the axial force caused by the weights of the upper frame and the rotating part of the unit (including water thrust), and the forces are transmitted to the concrete foundation through the base; therefore, the stand has enough strength and rigidity, and the stand with the large outer diameter of the iron core also needs to consider measures for adapting to the thermal deformation of the iron core.
The diameter of the stator base is generally 10-13 meters, the height is 2-3 meters, the stator base is divided into 4-piece structures and is composed of a plurality of layers of ring plates, the size of a right circle is large, the structure is simple, the inner circle and the outer circle of each layer of ring plate are integrally cut after being welded, the tolerance of the inner circle is ensured to be +/-5, and the outer circle is in accordance with the free tolerance; the stator frame comprises a plurality of sealed chambers, and a sand blasting painting process is required to be firstly carried out; in the prior art, a margin of 40mm is reserved for a single side of an inner circle and an outer circle of a blanking ring plate, a numerical control cutting machine is used for secondarily cutting the inner circle and the outer circle of the ring plate after tailor welding, a margin of 20mm is reserved for the single side, and the inner circle and the outer circle of the ring plate are integrally cut again after integral tailor welding to ensure that the size is in place; sealing the chamber involves pre-blasting and priming the part in the part state.
The prior technical scheme has a complex flow, 40mm allowance is reserved for the single side of the inner circle and the outer circle of the ring plate, the two-time integral cutting is carried out, the production cost is high, and the required production period is long; the sealed cavity part sandblasts paint under the part state, can increase the area of coating to can cause the paint damage after welding the part of having sprayed paint, follow-up paint repair repetitive operation that needs to carry out leads to the fact the condition of extravagant paint.
Disclosure of Invention
The invention aims to: the invention provides a method for manufacturing a stator base of a hydraulic generator, aiming at solving the problems of complex flow, higher cost and longer required production period in the prior art.
The invention specifically adopts the following technical scheme for realizing the purpose:
a manufacturing method of a stator base of a hydraulic generator comprises the following steps:
step S1: processing all parts, reserving a cutting allowance of 20mm for the inner circle of each layer of ring plate, and reserving a welding shrinkage allowance of 3mm for the outer circle;
step S2: respectively installing and welding a first machine base and a second machine base, performing shot blasting coating on the inner parts of the first machine base and the second machine base, which form a sealed chamber, and assembling other parts to form the sealed chamber;
and step S3: connecting the first base and the second base into a full circle;
and step S4: uniformly welding a plurality of supporting pieces at the bottom of the stator base forming a complete circle;
step S5: stress relief and flaw detection treatment are carried out on the stator base;
step S6: after the allowance of the split surface of the stator base is removed, the first base and the second base are combined through a joint closing block;
step S7: cutting the inner circle allowance of each layer of ring plate;
step S8: inspecting and marking the stator base;
step S9: and carrying out shot blasting rust removal and paint spraying on the first machine base and the second machine base.
Further, the processing in step S1 is specifically: and performing numerical control cutting, forming and shape correction on all parts.
Further, step S2 further includes the steps of: after the main body structures of the first base and the second base are assembled, T-shaped lacing wires are additionally arranged on the inner sides of the first base and the second base along the horizontal direction, each end of each T-shaped lacing wire is connected with a ring plate, steel pipe lacing wires are arranged on the inner sides of the first base and the second base along the vertical direction, and the steel pipe lacing wires are connected with each ring plate.
Further, step S3 specifically includes: and the first engine base and the second engine base are combined into a whole circle by welding steel plates at the joint of the first engine base and the second engine base.
Further, support piece in step S4 includes first landing leg riser, second landing leg riser, landing leg gusset and landing leg bottom plate, the quantity of first landing leg riser is two and be parallel to each other, second landing leg riser parallel arrangement is between two first landing leg risers, be provided with the landing leg gusset between two first landing leg risers perpendicularly, two first landing leg risers, the one end of second landing leg riser and landing leg gusset all is connected with the bottom of stator frame, the other end all is connected with the top surface of landing leg bottom plate perpendicularly.
Further, in step S5, stress is relieved by adopting a vibration aging method.
Further, the flaw detection processing in step S5 includes UT flaw detection and MT flaw detection.
Further, step S6 specifically includes: and after the allowance of the split surface of the stator base is removed, the joint close blocks on the first base and the second base are closed through bolts.
Further, step S7 specifically includes: and cutting the inner circle allowance of each layer of ring plate by adopting central column tooling flame.
Further, step S8 specifically includes: and (4) inspecting the welding size and the appearance of a welding seam of the stator base, and marking the stator base pairing mark, the project number, the drawing number, the material number and the XY axis by using a steel seal.
The invention has the following beneficial effects:
according to the invention, the whole stator base is firstly welded, and then shot blasting coating is carried out on the inside of the sealed cavity, so that the spraying times are reduced, and the cost is saved; through reserving the cutting allowance of 20mm with each layer of ring plate inner circle, the welding shrink allowance of 3mm is reserved to the excircle, only need carry out one side cutting, and the flow is simple, has reduced work load, has shortened production cycle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the first machine base after assembling the T-shaped tie bars and the steel pipe tie bars in the present invention;
FIG. 3 is a schematic view of the structure of the supporting member of the present invention
Reference numerals: 1-a first machine base; 2-a second stand; 3-an upper ring plate of the stator base; 4-stator frame middle ring plate; 5-a lower ring plate of the stator base, 6-a joint closing block; 7-plywood bonding; 8, hoisting the steel pipe; 9-a first steel plate; 10-a second steel plate; 11-a first rib plate; 12-second rib plate; 13-a support; 131-a leg bottom plate; 132-a first leg riser; 133-a second leg riser; 134-leg rib plate; 14-a wall of the housing; 15-box-shaped ribs; 16-pulling steel pipes; 17-T shaped lacing wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a method for manufacturing a stator frame of a hydro-generator, where the stator frame includes a first frame 1 and a second frame 2, horizontal cross sections of the first frame 1 and the second frame 2 are both semicircular, and the method for manufacturing the stator frame includes the following steps:
step S1: processing all parts, reserving a cutting allowance of 20mm for the inner circle of each layer of ring plate, and reserving a welding shrinkage allowance of 3mm for the outer circle;
step S2: respectively installing and welding a first machine base 1 and a second machine base 2, performing shot blasting coating on the inside of a sealed chamber to be formed in the first machine base 1 and the second machine base 2, and assembling other components to form the sealed chamber;
and step S3: connecting the first machine base 1 and the second machine base 2 into a whole circle;
and step S4: uniformly welding a plurality of supporting pieces 13 at the bottom of the stator base forming a complete circle;
step S5: stress relief and flaw detection processing are carried out on the stator base;
step S6: after the allowance of the split surface of the stator base is removed, the first base 1 and the second base 2 are combined through the seaming block 6;
step S7: cutting the inner circle allowance of each layer of ring plate;
step S8: inspecting and marking the stator base;
step S9: and performing shot blasting rust removal and paint spraying on the first machine base 1 and the second machine base 2.
The processing treatment in the step S1 specifically includes: and performing numerical control cutting, forming and shape correction on all parts.
As shown in fig. 2, step S2 further includes the steps of: after the main body structures of the first machine base 1 and the second machine base 2 are assembled, T-shaped tie bars 17 are additionally arranged on the inner sides of the first machine base 1 and the second machine base 2 along the horizontal direction, each end of each T-shaped tie bar 17 is connected with a ring plate, steel pipe tie bars 16 are arranged on the inner sides of the first machine base 1 and the second machine base 2 along the vertical direction, and the steel pipe tie bars 16 are connected with each ring plate.
It should be noted that the stator frame is divided into two halves, namely, a first frame 1 and a second frame 2, and the first frame 1 and the second frame 2 have the same structure and the same assembly process.
The invention relates to a concrete manufacturing method of a stator base of a hydraulic generator, which comprises the following steps: the method comprises the following steps of performing numerical control cutting, forming, shape correction, machining and other processes on parts required by stator base assembly according to drawing process requirements, reserving a cutting allowance of 20mm in the inner circle of each layer of ring plate, reserving a welding shrinkage allowance of 3mm in the outer circle, marking X and Y axes on an upper platform of a platform, lofting a lower ring plate 5 of the stator base, assembling an upper ring plate 3 of the stator base and a middle ring plate 4 of the stator base layer by layer, wherein the number of the middle ring plates 4 of the stator base is multiple, vertically assembling a first rib plate 11, a second rib plate 12, a box-shaped rib 15 and a base wall 14, connecting the parts in a spot welding manner, reserving allowances of the parts to enable the total height of the ring plates to be increased by 10mm to serve as the welding shrinkage allowance, additionally installing 3 layers of T-shaped pull ribs 17 on the inner side surfaces of the first base 1 and the second base 2 in a welding manner, additionally installing steel pipe pull ribs 16 in the height direction, and welding the steel pipe pull ribs 16 with the ring plates on each layer; the T-shaped lacing wire 17 and the steel pipe lacing wire 16 can prevent the first machine base 1 and the second machine base 2 from deforming to influence a finished product; and then assembling a plywood 7, a lifting steel pipe 8 and a first steel plate 9, wherein the plywood 7 is connected with the top pipe of the lifting steel pipe 8, the first steel plate 9 is connected with the bottom of the lifting steel pipe 8, shot blasting paint is carried out on the inner side shielding part and a second steel plate 10 which form a sealed cavity, the second steel plate 10 is welded inside the sealed cavity to form the sealed cavity, the first machine base 1 and a second machine base 2 are connected into a whole circle to form a stator machine base, the stator machine base is turned over, a plurality of supporting pieces 13 are uniformly welded at the bottom of the stator machine base and redundant places are polished, the stator machine base is subjected to stress relief and flaw detection treatment, after the split surface allowance of the stator machine base is removed, the first machine base 1 and the second machine base 2 are tightly closed through a joint block 6, the inner circle of an interlayer ring plate is integrally cut, the concentricity and roundness of the inner circle are ensured, the outer circle of the ring plate only needs to carry out local cutting and grinding on the positions larger than the tolerance requirement according to the welding deformation condition, after the cutting and grinding are well, the stator machine base is inspected and identified, the first machine base 1 and the second machine base are detached, and the residual part of the shot blasting paint is coated, and the machine base is finally, and the residual part of the machine base is coated with the residual part of the paint.
Example 2
This embodiment is based on embodiment 1, and the present invention is further described in an optimized manner.
Further, step S3 specifically includes: and the first machine base 1 and the second machine base 2 are combined into a whole circle by welding steel plates at the joint of the first machine base 1 and the second machine base 2.
As shown in fig. 3, the supporting member 13 in step S4 includes two first leg vertical plates 132, two second leg vertical plates 133, leg rib plates 134, and a leg bottom plate 131, where the number of the first leg vertical plates 132 is two and parallel to each other, the second leg vertical plates 133 are arranged between the two first leg vertical plates 132 in parallel, the leg rib plates 134 are vertically arranged between the two first leg vertical plates 132, and one ends of the two first leg vertical plates 132, the second leg vertical plates 133, and the leg rib plates 134 are all connected to the bottom of the stator base, and the other ends are all connected to the top surface of the leg bottom plate 131.
Further, step S5 specifically adopts a vibration aging method to relieve stress.
Further, the flaw detection processing in step S5 includes UT flaw detection and MT flaw detection.
Further, step S6 specifically includes: and after the allowance of the split surface of the stator base is removed, the seaming blocks 6 on the first base 1 and the second base 2 are closed through bolts.
Further, step S7 specifically includes: and cutting the inner circle allowance of each layer of ring plate by adopting central column tooling flame.
Further, step S8 specifically includes: and (4) inspecting the assembly welding size and the appearance of a welding seam of the stator base, and marking the stator base pairing identification, the item number, the drawing number, the material number and the XY axis by using a steel seal.
Claims (10)
1. The manufacturing method of the stator base of the hydraulic generator is characterized in that the stator base comprises a first base (1) and a second base (2), the horizontal sections of the first base (1) and the second base (2) are semicircular, and the manufacturing method of the stator base comprises the following steps:
step S1: all parts are processed, the inner circle of each layer of ring plate is reserved with a cutting allowance of 20mm, and the outer circle of each layer of ring plate is reserved with a welding shrinkage allowance of 3 mm;
step S2: respectively installing and welding a first machine base (1) and a second machine base (2), performing shot blasting coating on the inside of a sealed chamber to be formed in the first machine base (1) and the second machine base (2), and assembling other components to form the sealed chamber;
and step S3: connecting the first machine base (1) and the second machine base (2) into a whole circle;
and step S4: uniformly welding a plurality of supporting pieces (13) at the bottom of the stator base forming a full circle;
step S5: stress relief and flaw detection processing are carried out on the stator base;
step S6: after the allowance of the split surface of the stator base is removed, the first base (1) and the second base (2) are combined through a joint closing block (6);
step S7: cutting the inner circle allowance of each layer of ring plate;
step S8: inspecting and marking the stator base;
step S9: and carrying out shot blasting rust removal and paint spraying on the first machine base (1) and the second machine base (2).
2. The manufacturing method of the stator base of the hydraulic generator according to claim 1, wherein the processing in the step S1 specifically comprises: and performing numerical control cutting, forming and shape correction on all parts.
3. The manufacturing method of a stator frame of a hydro-generator according to claim 1, wherein the step S2 further comprises the steps of: after the main body structures of the first machine base (1) and the second machine base (2) are assembled, T-shaped tie bars (17) are additionally arranged on the inner sides of the first machine base (1) and the second machine base (2) along the horizontal direction, each end of each T-shaped tie bar (17) is connected with a ring plate, steel pipe tie bars (16) are arranged on the inner sides of the first machine base (1) and the second machine base (2) along the vertical direction, and the steel pipe tie bars (16) are connected with each ring plate.
4. The manufacturing method of the stator base of the hydro-generator according to claim 1, wherein the step S3 is specifically: and the first machine base (1) and the second machine base (2) are combined into a whole circle by welding steel plates at the joint of the first machine base (1) and the second machine base (2).
5. The manufacturing method of the stator base of the hydro-generator according to claim 1, wherein the supporting member (13) in the step S4 comprises two first leg vertical plates (132), two second leg vertical plates (133), two leg rib plates (134) and two leg bottom plates (131), the first leg vertical plates (132) are parallel to each other, the second leg vertical plates (133) are arranged between the two first leg vertical plates (132) in parallel, the leg rib plates (134) are vertically arranged between the two first leg vertical plates (132), one ends of the two first leg vertical plates (132), the second leg vertical plates (133) and the leg rib plates (134) are connected with the bottom of the stator base, and the other ends of the two first leg vertical plates (132), the second leg vertical plates (133) and the leg rib plates (134) are vertically connected with the top surfaces of the leg bottom plates (131).
6. The manufacturing method of the stator frame of the hydraulic generator according to claim 1, wherein the stress is relieved in step S5 by adopting a vibration aging method.
7. The manufacturing method of a stator base of a hydraulic generator according to claim 1, wherein the flaw detection in step S5 comprises UT flaw detection and MT flaw detection.
8. The manufacturing method of the stator base of the hydro-generator according to claim 1, wherein the step S6 is specifically: and after the allowance of the split surface of the stator base is removed, the seaming blocks (6) on the first base (1) and the second base (2) are closed through bolts.
9. The manufacturing method of the stator base of the hydro-generator according to claim 1, wherein the step S7 is specifically: and cutting the inner circle allowance of each layer of ring plate by adopting central column tooling flame.
10. The manufacturing method of the stator base of the hydro-generator according to claim 1, wherein the step S8 is specifically: and (4) inspecting the welding size and the appearance of a welding seam of the stator base, and marking the stator base pairing mark, the project number, the drawing number, the material number and the XY axis by using a steel seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279468.5A CN114069987B (en) | 2021-10-29 | 2021-10-29 | Manufacturing method of stator base of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279468.5A CN114069987B (en) | 2021-10-29 | 2021-10-29 | Manufacturing method of stator base of hydraulic generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114069987A CN114069987A (en) | 2022-02-18 |
| CN114069987B true CN114069987B (en) | 2022-12-02 |
Family
ID=80236374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111279468.5A Active CN114069987B (en) | 2021-10-29 | 2021-10-29 | Manufacturing method of stator base of hydraulic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114069987B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581549A (en) * | 2012-03-21 | 2012-07-18 | 无锡圣贝尔机电有限公司 | Process for fabricating wind-driven generator base |
| CN104439745A (en) * | 2014-12-01 | 2015-03-25 | 哈尔滨电机厂有限责任公司 | Improved method for welding 1000 MW generator stator base |
| CN107222074A (en) * | 2017-07-31 | 2017-09-29 | 哈尔滨电机厂有限责任公司 | Air-cooled steam turbine generator stator support assembling and welding process |
| CN107294237A (en) * | 2017-06-30 | 2017-10-24 | 南京玛格耐特智能科技有限公司 | MULTILAYER COMPOSITE tubular dot matrix conductor rotor structure and its processing method |
| CN113523721A (en) * | 2021-07-13 | 2021-10-22 | 江苏振江新能源装备股份有限公司 | Manufacturing method of three-lobe stator component and three-lobe stator component |
-
2021
- 2021-10-29 CN CN202111279468.5A patent/CN114069987B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581549A (en) * | 2012-03-21 | 2012-07-18 | 无锡圣贝尔机电有限公司 | Process for fabricating wind-driven generator base |
| CN104439745A (en) * | 2014-12-01 | 2015-03-25 | 哈尔滨电机厂有限责任公司 | Improved method for welding 1000 MW generator stator base |
| CN107294237A (en) * | 2017-06-30 | 2017-10-24 | 南京玛格耐特智能科技有限公司 | MULTILAYER COMPOSITE tubular dot matrix conductor rotor structure and its processing method |
| CN107222074A (en) * | 2017-07-31 | 2017-09-29 | 哈尔滨电机厂有限责任公司 | Air-cooled steam turbine generator stator support assembling and welding process |
| CN113523721A (en) * | 2021-07-13 | 2021-10-22 | 江苏振江新能源装备股份有限公司 | Manufacturing method of three-lobe stator component and three-lobe stator component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114069987A (en) | 2022-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2020533179A (en) | Manufacturing process for large ring forgings | |
| CN102465600B (en) | Steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering preparation method | |
| CN104883841A (en) | Middle frame structure manufacturing technology and middle frame structure | |
| CN107790595A (en) | A kind of hydrostatic forging device | |
| CN101693336B (en) | Technique for processing circular ring box type beam of lifting tool | |
| CN114069987B (en) | Manufacturing method of stator base of hydraulic generator | |
| CN104772909A (en) | Double-station twining mould for intermedium tube producing and manufacturing method for intermedium tube | |
| CN106736292A (en) | A kind of advanced pressurized water reactor fuel element base machining process | |
| CN109950986B (en) | Method for improving stability of stator shielding sleeve of shielding motor | |
| CN107685190A (en) | A kind of die assembly for grounded screen aluminum weld | |
| CN1039046C (en) | Steel made welding baking tank for paper making machinery and producing method | |
| CN207819615U (en) | A kind of large-scale dc motor engine base | |
| CN106969252A (en) | The rubber diaphragm sealed gas holder of unistage type of regular polygon thin oil seal gas holder reconstruction | |
| CN206929551U (en) | The rubber diaphragm sealed gas holder of unistage type of regular polygon thin oil seal gas holder reconstruction | |
| CN107516982B (en) | A kind of large-size machine stator punching laminates technique | |
| US11174695B2 (en) | Integrated function block for use in subsea systems | |
| CN116551230A (en) | Precise assembly welding method for large-size titanium alloy thin-wall conical member | |
| CN207953205U (en) | L O section processing simple tooling in a kind of steam turbine low-pressure inner casing | |
| CN205437604U (en) | Real empty room midplane window in large -scale double -deck D type cross -section and supporting shoe assembly welding device | |
| CA2736435A1 (en) | Method and apparatus for manufacturing a rotor | |
| CN104191082A (en) | Welding method for automatable transmission shaft tube and joint spider | |
| CN210064889U (en) | Horizontal high-pressure main steam valve dismounting tool | |
| CN205662242U (en) | A revolving stage integrated configuration for high pedestal jib crane | |
| CN201059316Y (en) | Hoisting machine bottom shaft | |
| CN202591879U (en) | A jaw brusher bearing block welding aid tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |