CN111498049B - Mounting method of energy-saving stator - Google Patents
Mounting method of energy-saving stator Download PDFInfo
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- CN111498049B CN111498049B CN202010280224.8A CN202010280224A CN111498049B CN 111498049 B CN111498049 B CN 111498049B CN 202010280224 A CN202010280224 A CN 202010280224A CN 111498049 B CN111498049 B CN 111498049B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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Abstract
The invention belongs to the technical field of ships, and relates to an installation method of an energy-saving stator, which comprises the following steps: (1) manufacturing fixed fins in a partitioning manner, wherein allowance is reserved on the folding end face of each fixed fin; (2) inverting the tail shaft hub steel casting on the platform, and adjusting the tail shaft hub steel casting to a horizontal state; (3) adjusting the angle and the size of the dip angle of the manufactured fixed fin by using a total station and a plumb bob tool, and performing OTS pre-folding on the stator; (4) surveying and cutting the allowance of the closed end surface of the fixed fin to the position by using a projection method; (5) resetting the repaired fixed fins and the tail shaft hub steel castings again according to design requirements, fixing the inclination angle and the spatial position of the fixed fins, rigidly connecting adjacent fixed fins through connecting pieces, and forming the fixed fins into a stator group; (6) and hoisting the stator group to the inverted tail shaft hub steel casting, and assembling the stator group and the tail shaft hub steel casting. The invention has high manufacturing and mounting precision and effectively shortens the manufacturing and mounting period.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to an installation method of an energy-saving stator.
Background
As shown in figure 1, a group of fixed blade 1-5 (namely a front stator) propelling devices are arranged on a tail shaft hub 6 in front of a marine propeller 7, fixed blades 1-5 are arranged on the tail shaft hub 6, and the combined device of the fixed blades 1-5 and the propeller 7 is an energy-saving propeller. The fixed blades can recover a part of wake flow rotation energy, the circumferential efficiency of the propeller is improved, and an additional thrust is generated: on one hand, the propulsion efficiency is improved; on the other hand, the interaction between the oar and the ship body is influenced, the efficiency of the ship body is improved, the purpose of saving energy is achieved, the obvious energy-saving effect is achieved, and the practicability is extremely strong. The front stator is generally suitable for large ocean-going vessels.
The existing installation of the front stator adopts the modes of manufacturing and installing the energy-saving stator in a slicing mode, namely, the energy-saving stator is manufactured and formed in a slicing mode, and after the welding of the tail shaft hub steel casting 6 is completed, the structural member is installed in a slicing mode. A plurality of independent airfoil fin-shaped structural members of the front stator are respectively installed around the tail hub. Each fixed fin is installed and fixed on the tail shaft hub according to the respective X-axis surface angle and the fin top base line surface bidirectional angle, and an integral energy-saving device is formed at the front side position of the propeller, so that the design requirement of steady flow and energy conservation is met. This method has the following drawbacks: due to the fact that the linetype of the stern post steel casting is complex, proper reference datum is difficult to select for installation of each fixed fin in a slicing mode, and the inclination angle and the size precision are difficult to control. Therefore, a certain allowance is added on the closure end surface of each fixed fin, so that the adjustment of the fixed fin and the tail shaft hub during assembly is facilitated, the manufacturing period and the construction difficulty of the section are invisibly prolonged, and the overall precision of stator device installation is not favorably controlled.
Chinese utility model patent with publication number CN203937848U, publication date 2014 11/12 discloses a leading stator structure of boats and ships oar, including the 4-6 stator vanes that are located the boats and ships screw front side, the rear end of boats and ships stern portion is evenly located to 4-6 stator vanes using the axis of screw as the central line, and the rear portion of this stator vane has the flap that extends to the blade tip from the blade root of this stator vane. The above documents do not disclose the method of making and mounting the stator vanes.
Chinese patent publication No. CN108910008A, published 2018, 11 and 30, discloses a deep-sea rim propeller with a rudder, comprising: the steering system comprises a rim motor, a guide pipe, a propeller, a hollow shaft, a front stator, a rear stator and a steering structure. The above documents also do not disclose the method of making and mounting the pre-stator.
The patent publication No. CN102632982A, published China invention patent of 8/15/2012 discloses a shaftless driving type integrated motor propeller, which is arranged at the tail of a hull of a water surface or underwater vehicle and consists of a front stator, a rotor propeller and a rear stator which are arranged on a solid non-rotating shaft in series. The inner peripheries of the front stator and the rear stator are fixed on the solid non-rotating shaft, and the outer periphery of the front stator and the rear stator is fixed with the accelerating or decelerating guide pipe through fasteners such as screws. Although the above document discloses that the front stator hub of the front stator is fixed to the solid non-rotating shaft and the outer ends of the front stator blades are locked to the connecting duct by fasteners, it does not disclose how the blades of the front stator are fixed to the hub.
Therefore, a method for mounting an energy-saving front stator is required.
Disclosure of Invention
The invention aims to provide an energy-saving stator mounting method, which has high manufacturing and mounting precision and effectively shortens the manufacturing and mounting period.
The invention aims to realize the following technical scheme that the energy-saving stator comprises a plurality of fixed fins, and is characterized by comprising the following steps of:
(1) on a known design drawing, inverting the tail shaft hub, adjusting the tail shaft hub to a horizontal state, and determining an original point O (0,0,0), wherein the original point is positioned on the central point of a projection plane of the tail shaft hub;
under the vertical state of the fixed fin, calculating the fixed fin niFirst vertex C of sealing plateiThree-dimensional coordinates (x) ofi1,yi1,zi1) A second vertex DiThree-dimensional coordinates (x) ofi2,yi2,zi2) Wherein i is 1-n, and n is a natural number;
under the state of the design inclination angle of the fixed fin, two vertexes C of each fixed fin sealing plateiDiA point E is taken on the straight line segmenti，EiDiA is less than or equal to CiDiLength of (d);
calculating the fin setting n according to the known design drawingiPoint EiProjection point E on a horizontal planei'，Ei'、Ei、DiForming a right triangle by three points, and calculating DiEiProjected width in the horizontal plane Ei'DiWidth B ofiCalculating the fin setting niThe included angle between the water surface and the horizontal plane is equal to EiDiEi', defined as a, angle Ei Ei'Di＝90°；
At the fixed fin niThe outer end of the first side wall is provided with an arc edge Ci、DiFind several points F in betweenjJ is a natural number; find Ci、Di、FjProjection point C on the corresponding tail hubi'、Di'、Fj', calculate Ci Ci'，Di Di'，FjFj' design Length LCi1 is provided with、LDi1 is set、LFi is equipped with(ii) a At the fixed fin niSecond side wall outer end arc edge CiDiFind a plurality of points G in betweenkK is a natural number, find Ci、Di、GkProjection point C on the corresponding tail hubi'、Di'、Gk', calculate CiCi'、Di Di'、Gk Gk' design Length LCi2 is provided with、LDi2 is set、LGk is provided with；
(2) Manufacturing the fin-fixing steel casting n according to design requirements in a slicing modeiSealing plates are arranged on the outer end faces of the fixed fin steel castings, allowance is reserved on the closure end face of each fixed fin steel casting, and the fixed fin steel casting niThe outer end of the first side wall is provided with an arc edge Ci、DiFind a corresponding point F betweenjJ is a natural number, Ci、Di、FjTo the corresponding fin-fixing steel casting niFolding end surface projection point Ci”、Di”、Fj", calculate CiCi”、Di Di”、FjFj"actual length LCi1 Shikuai、LDi1 true、LFi reality；
On the steel casting n of fin fixingiSecond side wall outer end arc edge Ci、DiFind a corresponding point G betweenkK is a natural number, Ci、Di、GkTo the corresponding fixed fin closure end surface projection point Ci”、Di”、Gk", calculate Ci Ci”、Di Di”、Gk Gk"actual length L ofCi2 Shikuai、LDi2 true、LFruit of Gk(ii) a Wherein i is 1-n, and n is a natural number;
inverting the tail shaft hub steel casting on the platform, adjusting the tail shaft hub steel casting to a horizontal state, and determining an original point O '(0,0,0) of the tail shaft hub steel casting on the platform by using a total station, wherein O' is overlapped with O;
(3) firstly, fin fixing niVertically arranged on a platform, and determining a fixed fin n by using a total stationiFirst vertex C of sealing plateiD of the second vertexiDetermining the position of the point E and the position of the point E; then, the fin n is fixediTilting, using plumb bob to find the projected point E of point E on the horizontal planei', when Ei' Point and DiDistance between points is BiAt this time, the corresponding fixed fin niThe inclination angle of the base and the horizontal plane is a design angle a, and the inclination angle of the base is removed, wherein i is 1-n, and n is a natural number;
all fin fixing n is completediDetermining the inclination angle and the spatial position of the optical fiber;
(4) pre-closing the tail shaft hub steel casting and the fixed fin; according to the determined fixed fin niThe inclination angle and the spatial position of the fixed fin, and the profile of the connecting surface of the tail hub steel casting corresponding to the fixed fin, the part to be cut of the folded end surface of the fixed fin steel casting is planned, and the allowance of the folded end surface of each fixed fin is repaired and cut to the position;
fin-fixing steel casting niThe first side wall of (a) needs to be cut to the dimensions of:
Lci1 cut＝LCi1 Shikuai-LCi1 is provided with
LDi1 cut＝LDi1 true-LDi1 is set
LFj cut＝LFj seed-LFj is provided with
Fin-fixing steel casting niThe second side wall of (a) needs to be cut to the dimensions:
Lci2 cut＝LCi2 Shikuai-LCi2 is provided with
LDi2 cut＝LDi2 true-LDi2 is set
LGk2 cut＝LFruit of Gk-LGk is provided with
(5) The repaired fixed fins and the tail shaft hub steel castings reset again according to design requirements, the inclination angle and the spatial position of each fixed fin are fixed, adjacent fixed fins are rigidly connected through a connecting piece, and a plurality of fixed fins form a stator group;
(6) and hoisting the stator group to the inverted tail shaft hub steel casting, and assembling the stator group and the tail shaft hub steel casting.
Preferably, in the step (5), the connecting pieces are channel steel or i-steel, and at least two connecting pieces are arranged at the front end and the rear end of each fixed fin respectively.
Preferably, the size of the platform in step (2) is 5 m by 5 m.
Preferably, the manufactured fixed fin (1) is placed on a stator prefabricated jig frame, and the shape of a fetal membrane plate arranged on the stator prefabricated jig frame is matched with the shape of the corresponding fixed fin side wall.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the energy-saving stator device is manufactured in a slicing mode, the stator module is formed by the fixed fins through the connecting piece, the stator module is integrally hoisted to an inverted tail shaft hub steel casting to be welded and assembled, the modularized integral hoisting of the stator device is realized, the difficulty and the accuracy of installation of each fixed fin at the position of a space point on the tail shaft hub are solved, the inclination angle and the installation position precision of each fixed fin during installation are guaranteed, and the energy-saving design requirements of Yudao companies are met.
Secondly, the invention greatly shortens the overall period of the sectional manufacturing, and takes five fixed fins as an example, so that the time is saved by about 2 days. The invention utilizes the tail shaft hub steel casting to prefabricate on the platform, and reduces the workload of surplus marking-out on the segment on one hand. On the other hand, through OTS pre-folding and allowance pre-cutting, the construction difficulty of operators is reduced, and the installation precision of the stator device is improved.
Thirdly, the invention not only meets the requirement of energy-saving design, but also reduces the labor cost, and takes five fixed fins as an example, thereby saving the time by about 200 hours per ship and per set. The modularized integral hoisting reduces the service time of resources such as travelling cranes occupied by the independent hoisting of five fixed fins, saves about 1 day by taking five fixed fins as an example, reduces the safety risk brought by high-altitude operation, and improves the safety guarantee coefficient of production field operators.
Drawings
FIG. 1 is a schematic view of a conventional energy-saving stator segment installation;
FIG. 2 is a schematic structural view of a fin-fixing jig of the present invention;
FIG. 3 is a vertical view of the finning of the present invention;
FIG. 4 is a diagram illustrating the tilted orientation of the finders of the present invention;
FIG. 5 is a schematic diagram of an energy-saving stator pack (no connection between adjacent stator fins) according to the present invention;
FIG. 6 is a schematic diagram of an energy-saving stator pack (rigid connection of adjacent stator fins) according to the present invention;
fig. 7 is a perspective view of a stator pack of the present invention.
Detailed Description
The present invention is further illustrated by the following detailed description, which is to be construed as merely illustrative and not limitative of the remainder of the disclosure, and modifications and variations such as those ordinarily skilled in the art are intended to be included within the scope of the present invention as defined in the appended claims.
As shown in fig. 2 to 7, the energy-saving stator includes a first fixed fin S1, a second fixed fin S2, a third fixed fin S3, a fourth fixed fin P1, and a fifth fixed fin P2.
On the known design drawing, the tail shaft hub is inverted, the tail shaft hub is adjusted to be in a horizontal state, and an original point O (0,0,0) is determined and is located on the central point of the projection plane of the tail shaft hub.
Under the vertical state of the fixed fin, calculating the fixed fin niFirst vertex C of sealing plateiThree-dimensional coordinates (x) ofi1,yi1,zi1) A second vertex DiThree-dimensional coordinates (x) ofi2,yi2,zi2) Wherein i is 1-n, and n is a natural number.
Under the state of the design inclination angle of the fixed fin, two vertexes C of each fixed fin sealing plateiDiA point E is taken on the straight line segmenti，EiDiThe distance between the two is A, A is less than or equal to the straight line segment CiDiLength of (d).
Calculating the fin setting n according to the known design drawingiPoint EiProjection point E on a horizontal planei'，Ei'、Ei、DiForming a right triangle by three points, and calculating DiEiProjected width in the horizontal plane Ei'DiWidth B ofiCalculating the fin setting niThe included angle between the water surface and the horizontal plane is equal to EiDiEi', defined as a, angle Ei Ei'Di＝90°。
At the fixed fin niThe outer end of the first side wall is provided with an arc edge Ci、DiFind several points F in betweenjJ is a natural number; find Ci、Di、FjProjection point C on the corresponding tail hubi'、Di'、Fj', calculate Ci Ci'，Di Di'，FjFj' design Length LCi1 is provided with、LDi1 is set、LFiAnd (4) setting.
At the fixed fin niSecond side wall outer end arc edge CiDiFind a plurality of points G in betweenkK is a natural number, find Ci、Di、GkProjection point C on the corresponding tail hubi'、Di'、Gk', calculate CiCi'、Di Di'、Gk Gk' design Length LCi2 is provided with、LDi2 is set、LGkAnd (4) setting.
An installation method of an energy-saving stator comprises the following steps:
(1) the first, second, third, fourth and fifth fixed fin steel castings are manufactured in a slicing mode, and allowance is reserved on the folding end faces of the first, second, third, fourth and fifth fixed fin steel castings, and the method specifically comprises the following steps: utilize numerical control cutting machine cutting to correspond and decide fin lateral wall steel sheet, the fin shrouding of deciding the fin required size, press into required shape with the steel sheet through the hydraulic press, the fin curb plate is decided in the equipment, shrouding 10, later will decide the fin correspondence and place on the prefabricated bed-jig 8 of the fin of correspondence. As shown in fig. 2, the fin-fixing prefabricated jig 8 comprises jig frame columns 81, reinforcing labels 82 are arranged between the jig frame columns 81, a film plate 83 is arranged on the jig frame columns 81, and the film plate 3 is matched with the corresponding fin-fixing shape to prevent the manufactured fin-fixing from deforming. In use, the fin-setting pre-form jig 8 is placed on the ground 80. And a horizontal inspection line 84 for inspecting whether the fetal membrane plate is completely matched with the stator jig.
Allowance is left on the closure end surface of each fixed fin steel casting, and n is positioned on the fixed fin steel castingiThe outer end of the first side wall is provided with an arc edge Ci、DiFind a corresponding point F betweenjJ is a natural number, Ci、Di、FjTo the corresponding fin-fixing steel casting niFolding end surface projection point Ci”、Di”、Fj", calculate CiCi”、Di Di”、FjFj"actual length LCi1 Shikuai、LDi1 true、LFi reality；
On the steel casting n of fin fixingiSecond side wall outer end arc edge Ci、DiFind a corresponding point G betweenkK is a natural number, Ci、Di、GkTo the corresponding fixed fin closure end surface projection point Ci”、Di”、Gk", calculate Ci Ci”、Di Di”、Gk Gk"actual length L ofCi2 Shikuai、LDi2 true、LFruit of Gk(ii) a Wherein i is 1-n, and n is a natural number;
(2) inverting the tail shaft hub steel casting on the platform 9, adjusting the tail shaft hub steel casting to a horizontal state, and determining an original point O '(0,0,0) of the tail shaft hub steel casting on the platform by using a total station, wherein O' is overlapped with O;
(3) as shown in FIG. 3, the fin n is first determinediVertically arranged on a platform, and determining a fixed fin n in a vertical state by using a total stationiFirst vertex C of sealing plateiD of the second vertexiPosition, position of point E; as shown in fig. 4, then fin n is fixediTilting, using plumb bob to find the projected point E of point E on the horizontal planei', when Ei' Point and DiDistance between points is BiAt this time, the corresponding fixed fin niThe inclination angle of the horizontal plane is a design angle a, and the inclination angle is determined, wherein i is 1-n, and n is a natural number;
all fin fixing n is completediThe determination of the angle of inclination and the spatial position of (c), see fig. 5;
(4) and performing OTS pre-folding on the tail shaft hub steel casting and the fixed fin, wherein the pre-folding positioning size is shown in table 1.
TABLE 1 Fin-fixing OTS Pre-closing positioning size
| Stator | A value (mm) | BiValue (mm) |
| P1 | 500 | 441 |
| P2 | 500 | 492 |
| S1 | 500 | 453 |
| S2 | 500 | 441 |
| S3 | 500 | 482 |
According to the determined fixed fin niThe inclination angle and the spatial position of the fixed fin, and the profile of the connecting surface of the tail shaft hub steel casting corresponding to the fixed fin, a part 12 to be cut of the folded end surface 11 of the fixed fin is planned, and the allowance of the folded end surface of each fixed fin is repaired and cut to the position;
fin-fixing steel casting niThe first side wall of (a) needs to be cut to the dimensions of:
Lci1 cut＝LCi1 Shikuai-LCi1 is provided with
LDi1 cut＝LDi1 true-LDi1 is set
LFj cut＝LFj seed-LFj is provided with
Fin-fixing steel casting niThe second side wall of (a) needs to be cut to the dimensions:
Lci2 cut＝LCi2 Shikuai-LCi2 is provided with
LDi2 cut＝LDi2 true-LDi2 is set
LGk2 cut＝LFruit of Gk-LGk is provided with
(5) The cut fixed fins and the tail shaft hub steel castings are reset again according to design requirements, the inclination angle and the spatial position of each fixed fin are fixed, adjacent fixed fins are rigidly connected through a connecting piece, and a plurality of fixed fins form a stator group, as shown in fig. 6 and 7; (6) and hoisting the stator group to the inverted tail shaft hub steel casting, and assembling the stator group and the tail shaft hub steel casting.
The energy-saving stator device is manufactured in a slicing mode, the stator module is formed by the fixed fins through the connecting pieces, the stator module is integrally hoisted to the inverted tail shaft hub steel casting and welded, the modularized integral hoisting of the stator device is realized, the difficulty and the accuracy of installation of each fixed fin on the position of a space point on the tail shaft hub are solved, the inclination angle and the accuracy of the installation position of each fixed fin during installation are guaranteed, and the energy-saving design requirements of Yudao companies are met.
The invention greatly shortens the overall period of the sectional manufacturing, and saves about 2 days by taking five fixed fins as an example. The invention utilizes the tail shaft hub steel casting to prefabricate on the platform, and reduces the workload of surplus marking-out on the segment on one hand. On the other hand, through OTS pre-folding and allowance pre-cutting, the construction difficulty of operators is reduced, and the installation precision of the stator device is improved.
The invention not only meets the requirement of energy-saving design, but also reduces the labor cost, and takes five fixed fins as an example, about 200 hours per ship per set. The modularized integral hoisting reduces the service time of resources such as travelling cranes occupied by the independent hoisting of five fixed fins, saves about 1 day by taking five fixed fins as an example, reduces the safety risk brought by overhead reduction work, and improves the safety guarantee coefficient of production field workers.
In the present invention, unless otherwise explicitly specified or limited, the terms "provided", "connected", "disposed", "arranged", and the like are to be understood in a broad sense, e.g., fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing specification illustrates and describes the preferred embodiments of this invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. An installation method of an energy-saving stator, wherein the energy-saving stator comprises a plurality of fixed fins, and the fixed fins are wing-shaped fins, and the installation method is characterized by comprising the following steps:
(1) on a known design drawing, inverting the tail shaft hub, adjusting the tail shaft hub to a horizontal state, and determining an original point O (0,0,0), wherein the original point is positioned on the central point of a projection plane of the tail shaft hub;
under the vertical state of the fixed fin, calculating the fixed fin niFirst vertex C of sealing plateiThree-dimensional coordinates (x) ofi1,yi1,zi1) A second vertex DiThree-dimensional coordinates (x) ofi2,yi2,zi2) Wherein i =1-n, n being a natural number;
under the state of the design inclination angle of the fixed fin, two vertexes C of each fixed fin sealing plateiDiA point E is taken on the straight line segmenti，EiDiA is less than or equal to CiDiLength of (d);
calculating the fin setting n according to the known design drawingiPoint EiProjection point E on a horizontal planei ' ，Ei '、Ei、DiForming a right triangle by three points, and calculating DiEiProjected width in the horizontal plane Ei 'DiWidth B ofiCalculating the fin setting niThe included angle between the water surface and the horizontal plane is equal to EiDiEi 'Defined as a, angle Ei Ei 'Di =90°；
At the fixed fin niThe outer end of the first side wall is provided with an arc edge Ci、DiFind several points F in betweenjJ is a natural number; find Ci、Di、FjProjection point C on the corresponding tail hubi ' 、Di ' 、Fj 'Calculating Ci Ci '，Di Di '，FjFj 'Designed length L ofCi1 is provided with、LDi1 is set、LFi is equipped with；
At the fixed fin niSecond side wall outer end arc edge CiDiFind a plurality of points G in betweenkK is a natural number, find Ci、Di、GkProjection point C on the corresponding tail hubi ' 、Di ' 、Gk 'Calculating CiCi ' 、Di Di ' 、Gk Gk 'Designed length L ofCi2 is provided with、LDi2 is set、LGk is provided with；
(2) Manufacturing the fin-fixing steel casting n according to design requirements in a slicing modeiSealing plates are arranged on the outer end faces of the fixed fin steel castings, allowance is reserved on the closure end face of each fixed fin steel casting, and the fixed fin steel casting niThe outer end of the first side wall is provided with an arc edge Ci、DiFind a corresponding point F betweenjJ is a natural number, Ci、Di、FjTo the corresponding fin-fixing steel casting niFolding end surface projection point Ci '' 、Di '' 、Fj ''Calculating CiCi '' 、Di Di '' 、FjFj ''Actual length LCi1 Shikuai、LDi1 true、LFi reality；
On the steel casting n of fin fixingiSecond side wall outer end arc edge Ci、DiFind a corresponding point G betweenkK is a natural number, Ci、Di、GkTo the corresponding fixed fin closure end surface projection point Ci '' 、Di '' 、Gk ''Calculating Ci Ci '' 、Di Di '' 、Gk Gk ''Actual length L ofCi2 Shikuai、LDi2 true、LFruit of Gk(ii) a Wherein i =1-n, n being a natural number;
inverting the tail shaft hub steel casting on the platform, adjusting the tail shaft hub steel casting to a horizontal state, and determining an original point O '(0,0,0) of the tail shaft hub steel casting on the platform by using a total station, wherein O' is overlapped with O;
(3) firstly, fin fixing niVertically arranged on a platform, and determining a fixed fin n in a vertical state by using a total stationiFirst vertex C of sealing plateiD of the second vertexiDetermining the position of the point E and the position of the point E; then, the fin n is fixediTilting, using plumb bob to find the projected point E of point E on the horizontal planei 'When E isi 'Point and DiDistance between points is BiAt this time, the corresponding fixed fin niThe inclination angle of the water surface is a design angle a, and the inclination angle of the water surface is determined, wherein i =1-n, and n is a natural number;
all fin fixing n is completediDetermining the inclination angle and the spatial position of the optical fiber;
(4) pre-closing the tail shaft hub steel casting and the fixed fin; according to the determined fixed fin niThe dip angle and the spatial position of the fixed fin, and the profile of the connecting surface of the tail hub steel casting corresponding to the fixed fin, surveying the part to be cut of the folded end surface of the fixed fin, and trimming the allowance of the folded end surface of each fixed fin to the position;
fin-fixing steel casting niThe first side wall of (a) needs to be cut to the dimensions of:
Lci1 cut= LCi1 Shikuai-LCi1 is provided with
LDi1 cut= LDi1 true-LDi1 is set
LFj cut= LFj seed-LFj is provided with
Fin-fixing steel casting niThe second side wall of (a) needs to be cut to the dimensions:
Lci2 cut= LCi2 Shikuai-LCi2 is provided with
LDi2 cut= LDi2 true-LDi2 is set
LGk2 cut= LFruit of Gk-LGk is provided with
(5) The repaired fixed fins and the tail shaft hub steel castings reset again according to design requirements, the inclination angle and the spatial position of each fixed fin are fixed, adjacent fixed fins are rigidly connected through a connecting piece, and a plurality of fixed fins form a stator group;
(6) and hoisting the stator group to the inverted tail shaft hub steel casting, and assembling the stator group and the tail shaft hub steel casting.
2. The energy-saving stator mounting method according to claim 1, wherein in the step (5), the connecting pieces are channel steels or I-shaped steels, and at least two connecting pieces are arranged at the front end and the rear end of each fixed fin respectively.
3. The energy efficient stator installation method of claim 1 wherein the size of the platform in step (2) is 5 meters by 5 meters.
4. The energy-saving stator mounting method as claimed in claim 1, wherein the manufactured stator fins (1) are placed on a stator prefabricated jig frame, and the shape of a tire membrane plate arranged on the stator prefabricated jig frame is matched with the shape of the corresponding stator fin side wall.
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|---|---|---|---|---|
| CN112319727B (en) * | 2020-11-12 | 2021-12-14 | 江苏新时代造船有限公司 | Positioning method of energy-saving flow guide device for ship |
| CN113859476B (en) * | 2021-11-10 | 2023-03-24 | 上海外高桥造船有限公司 | Energy-saving stator installation tool and construction process thereof |
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