CN207069809U - Totally-enclosed steam turbine and its integrated permanent-magnet generating set - Google Patents

Abstract

The utility model discloses a kind of totally-enclosed steam turbine and its integrated permanent-magnet generating set, for solar low-temperature difference electricity generation system, including cylindrical shape steamer machine stator, upper end cover, bottom end cover, steam turbine permanent magnet rotor component, stator winding and output current terminal box, the upper end cover is fixed on above steamer machine stator, the upper interface of connection above upper end cover, the bottom end cover is fixed on below steamer machine stator, connection lower interface below bottom end cover, the stator winding is wrapped on the outer wall of steamer machine stator, the rotating excitation field of steam turbine permanent magnet rotor component is directly output to stator winding by steamer machine stator, above-mentioned component enclosure is among heat radiation protection shell, totally-enclosed steam turbine and its integrated permanent-magnet generating set right angle setting.Present apparatus structure is static seal structure, in the absence of dynamic sealing, reduces resistance, improves the reliability and security of system.

Description

Totally-enclosed steam turbine and its integrated permanent-magnet generating set

Technical field

It the utility model is related to steam turbine and its TRT field, and in particular to one kind is used for solar low-temperature difference and generated electricity Totally-enclosed steam turbine and its integrated permanent-magnet generating set of system.

Background technology

Solar low-temperature difference generating is that the solar energy of the most competitiveness after photovoltaic generation and solar energy high temperature generate electricity is sent out One of power technology.Solar low-temperature difference electricity generation module and system one refer to that system work bulk temperature is relatively low, and two refer to work temperature It is smaller to spend scope, to distinguish solar energy high temperature generating.Solar low-temperature difference power field operating temperature often below 100 DEG C, Usually using the low-temperature turbine group of low boiling organic working medium, this kind of working medium is generally inflammable, explosive, poisonous, and price is higher, work Matter does not allow typically to reveal.Using the low-temperature turbine group of low boiling organic working medium, consider all to repel from security and economy Use dynamic sealing.

Steam turbine is the mechanical energy that vapour pressure deficit potential energy and motion energy are converted to rotor high speed rotary motion, is then led to Cross the capital equipment that generator is converted into electric energy.Conventional thermal power generation and solar energy high temperature generate electricity, high using high-temperature steam turbine Warm steam turbine is done work by more than 300 DEG C of high-temperature steam, and working medium is water, because water security is cheap, so working medium allows on a small quantity Leakage.So, Steam Turbine can transmit kinetic energy with generating set by output shaft, and output shaft uses dynamic close with steam turbine casing Envelope.Magneto has simple in construction, it is not necessary to many advantages, such as exciting current, is adapted to p-m rotor and stator winding one Bodyization is arranged, is succeeded in wind power generating set and is sufficiently applied.But because wind power generating set is without seal request, its Similar structures can not use in solar low-temperature difference power field.

Chinese patent literature Publication No. CN101956679A patent of invention, it is proposed that a kind of geothermal energy or solar energy temperature Poor engine device and electricity-generating method, steam power machine is connected with generator in the solar thermoelectric generating method, using steaming Vapour drives steam power machine, and the mode that steam power machine drives generator operation to generate electricity realizes thermo-electric generation, but the system and device Structure is numerous and jumbled, very high to equipment reliability of operation and security requirement.

Utility model content

The utility model provides a kind of totally-enclosed steam turbine and its integrated permanent-magnet generating set, with different from prior art Design concept, low boiling working fluid kinetic energy is converted into mechanical energy and electric energy in solar low-temperature difference electricity generation system, improves system The reliability and security of system.

In order to solve the above technical problems, the utility model uses following scheme：

Totally-enclosed steam turbine and its integrated permanent-magnet generating set, including cylindrical shape steamer machine stator, upper end cover, lower end Lid, steam turbine permanent magnet rotor component, stator winding and output current terminal box, the upper end cover are fixed on steamer machine stator Side, the upper interface of upper end cover top connection, the bottom end cover are fixed on below steamer machine stator, and lower interface is connected below bottom end cover, The stator winding is wrapped on the outer wall of steamer machine stator, and the rotating excitation field of steam turbine permanent magnet rotor component is determined by steam turbine Son is directly output to stator winding, and above-mentioned component enclosure is among heat radiation protection shell.Totally-enclosed steam turbine and its integration are forever Magnetic generator group right angle setting.

Based on such scheme, the utility model is optimized as follows：

The steamer machine stator includes cylinder, and the cylinder is whole section of magnetic stainless steel thick-walled structure, and the inwall of cylinder is set Have from radially seeing rectangular or U-shaped inner groovy, inner groovy is symmetrical at least 2, and preferably even number is distributed；It is interior The bearing of trend up and down of groove and the axial direction of cylinder are at an acute angle, and inner groovy is the sprue of steam turbine working medium；The inner groovy Interlude uniform depth, be correspondingly provided with two changeover portions up and down in the upper and lower ends of inner groovy, the depth of inner groovy is from centre Section is gradually transitions depth zero through changeover portion to upper and lower ends and extends appropriate length.The outer wall of cylinder be provided with inwall Groove is spaced from radially seeing rectangular or U-shaped external groove, and external groove is symmetrical at least 2, and preferably It is symmetrical for even number；The bearing of trend up and down of external groove and the axial direction of cylinder are in certain acute angle；Whole section of depth of external groove is equal Even, its upper/lower terminal is respectively equipped with annular groove and lower annular groove, so that stator winding is wound.Specifically, steam turbine is fixed Son inner groovy and external groove be serrated it is spaced, inwall similar to gun barrel rifling turn into steam turbine working medium sprue, work Rotation passes through sprue to matter at a high speed, drives the rotation of steam turbine permanent magnet rotor component.

The steam turbine permanent magnet rotor component includes pole, and the pole is monoblock permanent magnetism stainless steel structure, pole outer wall Provided with from rectangular or U-shaped rotor recesses are radially seen, rotor recesses are in that the even number of at least 2 is symmetrical.Rotor recesses Bearing of trend up and down and pole it is axially in parallel, its radial edges is the impeller of steam turbine permanent magnet rotor component.Preferably, turn The interlude uniform depth of sub- groove, its upper/lower terminal are correspondingly provided with upper and lower changeover portion, rotor recesses from interlude depth by Gradual transition is to depth zero and extends appropriate length, to guide air-flow to be flowed through by stator runner, to prevent that air-flow is directly logical Cross rotor recesses and air flow shortcircuit occurs.The upper and lower home position of pole is correspondingly provided with incomplete upper half ball recess with Hemispherical groove, upper half ball recess and lower half ball recess are connected with upper end cover and bottom end cover respectively.

The simplest structure of steam turbine permanent magnet rotor component is only 2 rotor recesses, 180 ° of rotor recesses interval, radially Magnetizing, 2 rotor recesses are just the line of demarcation of N and S magnetic poles, and stator winding is the single-phase winding of simple continuous waveform, this The direct output single-phase alternating current of totally-enclosed steam turbine and its integrated permanent-magnet generating set of one structure；Stator winding can also be Chiasma type three-phase windings, export three-phase alternating current.

The upper interface of upper end connection of the upper end cover, lower end connects steamer machine stator by flange.The lower end of upper end cover is set It is equipped with the upper insertion circular hole of hexagonal arrangement and the upper end cover hemispherical groove among upper insertion circular hole bottom, upper insertion The upper half ball recess of circular hole formation working medium passage, upper end cover hemispherical groove and steam turbine permanent magnet rotor component is presented lower symmetrical Coordinate, a upper spherical ball built among two hemispherical grooves, upper spherical ball and two hemispherical groove compositions are most simple Single thrust bearing.

The lower end connection lower interface of the bottom end cover, upper end connects cylindrical shape steamer machine stator by flange.Bottom end cover Upper end is provided with the lower insertion circular hole of hexagonal arrangement and the bottom end cover hemispherical groove among lower insertion circular hole bottom. The lower half ball recess of lower insertion circular hole formation working medium passage, bottom end cover hemispherical groove and steam turbine permanent magnet rotor component is presented Lower symmetrical cooperation, a lower spherical ball, lower spherical ball and two hemispherical groove groups built in two hemispherical grooves centres Into simplest thrust bearing.

Upper insertion circular hole is the circular hole in upper similarly hereinafter footpath, different from the same footpath of upper insertion circular hole, and lower insertion circular hole is that lower end is straight Footpath is maximum, is tapered to minimum upwards, and the nozzle arrangements then suitably amplified upwards again, working medium occurs throttling expansion, subtracted here Pressure accelerates flowing.

Upper end cover and bottom end cover can also use the more complicated combined type nonintegrated structure of other structures, upper end cover and bottom end cover It can also be used with the connected mode of steamer machine stator and be threadedly coupled and weld.

Connected respectively by flange between the upper interface and upper end cover, between lower interface and bottom end cover, upper interface is with The other end of interface connects other connecting pipes of solar energy temperature difference system by the internal thread positioned at interface center.On in addition, It can be merged into and be integrally machined between end cap and upper interface, can be merged into and be integrally machined between bottom end cover and lower interface.

The beneficial effects of the utility model are：

1st, totally-enclosed steam turbine of the present utility model, whole device structure are not present dynamic sealing, only 4 flange seals and 2 thread seals totally 6 static seal structures.Merge processing, bottom end cover and lower interface in upper end cover and upper interface and merge processing In the case of, the present apparatus only has 2 flange sealing surfaces and 2 thread seal faces totally 4 static seal structures, and without armature spindle, more Without the armature spindle for stretching out stator.Present apparatus structure both reduces resistance, improves the reliability and security of system again, especially suitable For the low-temperature turbine using low boiling organic working medium.

2nd, the rotating excitation field of the utility model steam turbine permanent magnet rotor component, magnetic stainless steel or other permeability magnetic materials are passed through Cylindrical shape steam turbine stator casing and stator winding thereon are directly conducted to, passes through rotating excitation field and produces electric current, system is overall Good, simple in construction, the convenient disassembly of property.Steam turbine working medium is in completely enclosed Space-Work, only steam turbine permanent magnet rotor component For unique moving component, dynamic sealing is not present with other components, security of system and reliability are high.

3rd, totally-enclosed steam turbine and its integrated permanent-magnet generating set of the present utility model, by working medium carry out self-lubricating, From cooling, without special lubrication and cooling system, unit is vertically-mounted on the connecting pipe of solar energy temperature difference system, is not required to The extra energy consumption equipment such as working medium pump is wanted, simplifies system architecture, system whole efficiency is improved, is easy to system maintenance.This practicality Novel device minimizes, and facilitates multi-machine parallel connection, installed capacity can be controlled flexibly.

4th, the utility model is used in solar low-temperature difference electricity generation system, helps to realize building for solar low-temperature difference generating Integration, modularization and miniaturization are built, forms independent distributed local energy resource system.Ocean thermal energy conversion is with sea surface Seawater drives electrical power generators, together as low-temperature receiver as thermal source, bathypelagic seawater with low boiling working fluid driving low-temperature turbine Sample ocean thermal energy conversion low-temperature turbine has high requirements to reliability and sealing tool, therefore the utility model is also suitable simultaneously The Yu Haiyang temperature difference, underground heat or cogeneration low-temperature turbine group.

Brief description of the drawings

Fig. 1 is the overall structure diagram of the utility model embodiment；

Fig. 2 is Fig. 1 internal detachment structural representation；

Fig. 3 is the structural representation of steamer machine stator in Fig. 2；

Fig. 4 is the steam turbine permanent magnet rotor component structural representation of embodiment；

Fig. 5 is the enlarged drawing of upper end cover in Fig. 2；

Fig. 6 is Fig. 5 part-structure sectional view；

Fig. 7 is Fig. 5 face upwarding view；

Fig. 8 is the enlarged drawing of bottom end cover in Fig. 2；

Fig. 9 is the schematic diagram of lower insertion circular hole in Fig. 8；

Reference：

1- steamer machine stators, 10- cylinders, 11- inner groovies, 12- external grooves, the upper annular grooves of 121-, annular is recessed under 122- Groove, 2- upper end covers, 20- upper end cover poles, 200- upper end cover flanges, circular hole is penetrated on 201-, 202- upper end cover hemisphericals are recessed Groove, the upper spherical balls of 203-, 3- bottom end covers, 30- bottom end cover poles, 300- bottom end cover flanges, circular hole, 302- is penetrated under 301- Bottom end cover hemispherical groove, spherical ball under 303-, 4- steam turbine permanent magnet rotor components, 40- poles, 401- upper half spherical females Groove, 402- lower half ball recess, 41- rotor recesses, 5- stator winding, 6- output current terminal boxes, the upper interfaces of 7-, connect under 8- Mouthful, 9- heat radiation protection shells.

Embodiment

The utility model is described in more detail with reference to the accompanying drawings and examples.

As shown in Figure 1 and Figure 2, totally-enclosed steam turbine of the present utility model, including cylindrical shape steamer machine stator 1, upper end cover 2, Bottom end cover 3, steam turbine permanent magnet rotor component 4, upper interface 7 and lower interface 8, upper end cover 3 are fixed on steamer machine stator 1 by flange Top and its top connected with upper interface 7, bottom end cover 3 is fixed on below steamer machine stator 1 by flange and below with Interface 8 is connected, and the component of above-mentioned steam turbine is enclosed among heat radiation protection shell 9.The rotation of steam turbine permanent magnet rotor component 4 Magnetic field is directly output to stator winding 5 by steamer machine stator 1, is formed plus heat radiation protection shell 9 and output current terminal box 6 Totally-enclosed steam turbine and its integrated permanent-magnet generating set.Totally-enclosed steam turbine and its integrated permanent-magnet generating set is vertically pacified Dress.

Specifically, as shown in figure 3, the steamer machine stator 1 includes cylinder 10, cylinder 10 is by whole section of magnetic stainless steel thickness Wall is made.The inwall of cylinder 10 is provided with from radially seeing rectangular or U-shaped inner groovy 11.The size and number and cylinder of inner groovy 11 Diameter and wall thickness be adapted, and symmetrical in the even number of at least 2, in the present embodiment, the quantity of inner groovy 11 is set For 4.The axial direction of inner groovy 11 and cylinder is at an angle, and the diameter of angular dimension and cylinder 10, length are adapted, and angle Degree is necessary for acute angle, and inner groovy 11 is the sprue of steam turbine working medium.The interlude uniform depth of inner groovy 11, in inner groovy Upper and lower ends be correspondingly provided with two changeover portions up and down, the depth of inner groovy 11 is gradual through changeover portion from interlude to upper and lower ends It is transitioned into depth zero and extends appropriate length, to be connected with other components.Cylinder outer wall is provided with the inner groovy 11 with inwall It is spaced from radially seeing rectangular or U-shaped external groove 12, the size and number of external groove 12 and the diameter of cylinder and wall Thickness is adapted, and symmetrical in the even number of at least 2, and in the present embodiment, the quantity of external groove 12 is arranged to 4.It is outer recessed Groove 12 is axially at an angle with cylinder, and the diameter of angular dimension and cylinder, length are adapted, and angle is arranged to acute angle. It is different from inner groovy 11,12 whole sections of uniform depths of external groove, it is not necessary to changeover portion, but the upper/lower terminal of external groove 12 is set respectively There are upper annular groove 121 and lower annular groove 122, so that stator winding 5 is wound.

In particular, the inner groovy 11 of the inwall of cylindrical shape steamer machine stator 1 and the external groove 12 of outer wall are serrated phase Between arrange, inwall turns into the sprue of steam turbine working medium, rotation pass through sprue, drive vapour to working medium at a high speed similar to gun barrel rifling Turbine permanent magnet rotor component 4 rotates, while prevents that magnetic circuit is short-circuit on whole section of magnetic stainless steel cylinder, magnetic circuit is realized with winding Effectively cutting.

As shown in figure 4, steam turbine permanent magnet rotor component 4 includes pole 40, pole 40 is monoblock permanent magnetism stainless steel, pole 40 Outer wall is provided with from radially seeing rectangular or U-shaped rotor recesses 41.The size and number of rotor recesses 41 and the diameter phase of pole Adapt to, and it is symmetrical in the even number of at least 2, in the present embodiment, the quantity of rotor recesses 41 is arranged to 2.Rotor Groove 41 and pole are axially in parallel, and the radial edges of rotor recesses 41 are the impeller of steam turbine permanent magnet rotor component 4.In addition, Rotor recesses 41 are also designed to increasingly complex structure, i.e. the interlude uniform depth of rotor recesses 41, and in its upper and lower ends Upper and lower two changeover portions are set respectively, and the changeover portion makes rotor recesses 41 be gradually transitions depth zero from interlude depth and prolonged Long appropriate length, this bootable air-flow of structure are mainly flowed through by stator runner, prevent air-flow from being flowed through from rotor recesses 41 And make air flow shortcircuit, so as to improve turbine efficiency.The upper and lower home position of pole is correspondingly provided with incomplete upper half spherical female Groove 401 and lower half ball recess 402, upper half ball recess 401 and lower half ball recess 402 respectively with upper end cover 2 and bottom end cover 3 Connection.

In the present embodiment, steam turbine permanent magnet rotor component 4 uses simplest structure, that is, sets 2 rotor recesses 41, Rotor recesses 41 are spaced 180 °, and radial magnetizing, 2 rotor recesses 41 are just the line of demarcation of N and S magnetic poles, and stator winding 5 can be with It is arranged to the unidirectional winding of simple continuous waveform, generating set output single-phase alternating current；Stator winding 5 is it can also be provided that hand over Forked type three-phase windings, export three-phase alternating current.The pole 40 of steam turbine permanent magnet rotor component 4 can also be nonmagnetic material Combined with permanent-magnet material, turbine blade and impeller can also use common steam turbine structure.Stator winding 5 can also be interior Put, as long as compatible with working medium, output end sealed reliable, the built-in winding construction of common permanent-magnetic wind driven generator group can be used, imitated Rate is high.

As shown in Fig. 5, Fig. 6, Fig. 7, the upper end cover 2 includes upper end cover pole 20, and upper end cover pole is by monoblock stainless steel Or other metal materials are made, the upper interface 7 of upper end connection of upper end cover pole 20, lower end is provided with upper end cover flange 200, upper end Lid 2 is connected in one by flange and cylindrical shape steamer machine stator 1.The lower end of upper end cover pole 20 is provided with hexagonal arrangement Upper insertion circular hole 201 and the incomplete upper end cover hemispherical groove 202 among upper insertion circular hole bottom.Upper insertion circular hole 201 form working medium passages, and upper end cover hemispherical groove 202 and upper half ball recess 401 are in cooperation symmetrical above and below, two hemisphericals A upper spherical ball 203 is built-in between groove, upper spherical ball 203 and two hemispherical grooves form simplest thrust Bearing arrangement.The higher common thrust bearing of stability can be also used for the rotor being relatively large in diameter.

As shown in figure 8, bottom end cover 3 includes bottom end cover pole 30, bottom end cover pole is by monoblock stainless steel or other metal materials Material is made, the lower end of bottom end cover pole 30 connection lower interface 8, and upper end is provided with bottom end cover flange 300, bottom end cover by flange and The bottom of cylindrical shape steamer machine stator 1 connects as one.The upper end of bottom end cover pole 30 is provided with hexagonal arrangement and passed through Logical circular hole 301 and the incomplete bottom end cover hemispherical groove 302 among lower insertion circular hole.Lower insertion circular hole 301 forms work Matter passage, bottom end cover hemispherical groove 302 and lower half ball recess 402 are in cooperation symmetrical above and below, between two hemispherical grooves A built-in lower spherical ball 303, lower spherical ball 303 and corresponding two hemispherical grooves form simplest thrust bearing knot Structure, the higher common thrust bearing of stability can be also used for the rotor being relatively large in diameter.

As shown in figure 9, different from the same footpath of upper insertion circular hole 201, lower insertion circular hole 301 is that lower end diameter is maximum, upwards Minimum is tapered to, throttling expansion occurs here for the nozzle arrangements then suitably amplified upwards again, working medium, and decompression accelerates flowing.

Connected respectively by flange between upper interface 7 and upper end cover 2, between lower interface 8 and bottom end cover 3, upper interface 7 is with The other end of interface 8 is connected through a screw thread other connecting pipes of solar energy temperature difference system.

In the totally-enclosed steam turbine total of the present embodiment, in the absence of dynamic sealing, only 4 flange seals and 2 Thread seal totally 6 static seal structures.In addition, processing technology is convenient realize under conditions of, upper end cover 2 and upper interface 7 can be with Merge, bottom end cover 3 can merge with lower interface 8, and such sealing surface can be kept to 4 from 6, i.e. 2 flange seals and 2 spiral shells Line seals, and reduces resistance, improves the reliability and security of system.

It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model Within enclosing.

Claims (10)

1. totally-enclosed steam turbine and its integrated permanent-magnet generating set, it is characterised in that including cylindrical shape steamer machine stator, upper end Lid, bottom end cover, round bar shape steam turbine permanent magnet rotor component, stator winding and output current terminal box, the upper end cover are fixed on Above steamer machine stator, the upper interface of connection, the bottom end cover are fixed on below steamer machine stator above upper end cover, below bottom end cover Lower interface is connected, the stator winding is wrapped on the outer wall of steamer machine stator, the rotating excitation field of steam turbine permanent magnet rotor component Stator winding, the steamer machine stator, upper end cover, bottom end cover, steam turbine p-m rotor are directly output to by steamer machine stator Component, stator winding, upper interface, lower interface are enclosed among heat radiation protection shell, and totally-enclosed steam turbine and its integration are forever Magnetic generator group upper and lower is to right angle setting.

2. totally-enclosed steam turbine according to claim 1 and its integrated permanent-magnet generating set, it is characterised in that the vapour The inwall of wheel machine stator is provided with from rectangular or U-shaped inner groovy is radially seen, the quantity of inner groovy is at least symmetrical point of 2 Cloth, the axial direction of the bearing of trend up and down and steamer machine stator of inner groovy are at an acute angle；The interlude uniform depth of inner groovy, above and below it Both ends are correspondingly provided with two changeover portions, the depth of inner groovy up and down and are gradually transitions zero through changeover portion from interlude to upper and lower ends Depth simultaneously extends appropriate length.

3. totally-enclosed steam turbine according to claim 2 and its integrated permanent-magnet generating set, it is characterised in that the vapour The outer wall of wheel machine stator is provided with from rectangular or U-shaped external groove is radially seen, it is at least 2 that external groove is spaced with inner groovy Individual is symmetrical, and the axial direction of the bearing of trend up and down and steamer machine stator of external groove is at an acute angle；Described whole section of depth of external groove Uniformly, and its upper/lower terminal is respectively equipped with annular groove and lower annular groove.

4. totally-enclosed steam turbine according to claim 3 and its integrated permanent-magnet generating set, it is characterised in that in described The quantity of groove and external groove is even number, and inner groovy and external groove be serrated it is spaced.

5. totally-enclosed steam turbine according to claim 1 and its integrated permanent-magnet generating set, it is characterised in that the vapour The outer wall of turbine permanent magnet rotor component is provided with from rectangular or U-shaped rotor recesses are radially seen, the quantity of rotor recesses is at least Even number for 2 is symmetrical, and the bearing of trend up and down and steam turbine permanent magnet rotor component of rotor recesses are axially in parallel, described turn The interlude uniform depth of sub- groove, its upper and lower ends are correspondingly provided with two changeover portions up and down, and the depth of inner groovy is from interlude Depth zero is gradually transitions through changeover portion and extend appropriate length to upper and lower ends.

6. totally-enclosed steam turbine according to claim 5 and its integrated permanent-magnet generating set, it is characterised in that the vapour The upper and lower home position of turbine permanent magnet rotor component is correspondingly arranged on incomplete upper half ball recess and lower half ball recess, Upper half ball recess and lower half ball recess are respectively used to be connected with upper end cover and bottom end cover.

7. totally-enclosed steam turbine according to claim 6 and its integrated permanent-magnet generating set, it is characterised in that on described The lower end of end cap is provided with the upper insertion circular hole of hexagonal arrangement and the upper end cover hemisphere among upper insertion circular hole bottom The upper half ball recess of connected in star, upper end cover hemispherical groove and steam turbine permanent magnet rotor component presents lower symmetrical cooperation, wherein Between built-in upper spherical ball, upper spherical ball corresponding with its two hemispherical grooves composition thrust bearing.

8. totally-enclosed steam turbine according to claim 7 and its integrated permanent-magnet generating set, it is characterised in that under described The upper end of end cap is provided with the lower insertion circular hole of hexagonal arrangement and the bottom end cover hemisphere among lower insertion circular hole bottom The lower half ball recess of connected in star, bottom end cover hemispherical groove and steam turbine permanent magnet rotor component presents lower symmetrical cooperation, wherein Between built-in lower spherical ball, lower spherical ball two hemispherical grooves composition thrust bearing corresponding with its.

9. totally-enclosed steam turbine according to claim 8 and its integrated permanent-magnet generating set, it is characterised in that on described The circular hole that circular hole is upper similarly hereinafter footpath is penetrated, the lower insertion circular hole is that lower end diameter is maximum, and diameter is tapered to minimum from bottom to top, Then the nozzle arrangements and amplified upwards.

10. totally-enclosed steam turbine according to claim 1 and its integrated permanent-magnet generating set, it is characterised in that described Between upper interface and upper end cover by flange connect or be integrally machined, between the lower interface and bottom end cover by flange connection or It is integrally machined.