CN207048822U - Rotor, steam turbine and the steam turbine equipment of multiple coil structure - Google Patents

Abstract

The utility model provides a kind of rotor, steam turbine and the steam turbine equipment of multiple coil structure, is related to steam turbine field.The rotor of the multiple coil structure includes rotary shaft and multiple coil structure；Helical structure described in the first order is arranged and is fixed in the rotary shaft；Remaining described helical structure at different levels is arranged and is fixed in described in upper level on helical structure successively；The steam channel of helical structure described in the first order connects with the openend of helical structure described in afterbody.The steam turbine includes cylinder body, two load-bearing bearings, and the rotor of above-mentioned multiple coil structure；The rotary shaft runs through the cylinder body, and two load-bearing bearings are separately positioned on the position that the rotary shaft is connected with the cylinder body.Steam turbine provided by the utility model, the rotor of multiple coil structure is applied, shorten the length of helical duct and rotary shaft, while expand the external diameter of helical structure, improve output torque, the technical problem for solving existing single step helical structure output moment of torsion deficiency.

Description

Rotor, steam turbine and the steam turbine equipment of multiple coil structure

Technical field

Steam turbine technology field is the utility model is related to, more particularly, to a kind of rotor, the steam turbine of multiple coil structure And steam turbine equipment.

Background technology

Steam turbine is mainly used as prime mover of generating, can also directly drive various pumps, blower fan, compressor and ship spiral Oar etc., its operation principle are the rotary power into mechanical work by the energy conversion of steam, are entered by the generator of drive connection Row generates electricity.

Traditional steam turbine that power plant uses, including rotating part and stationary part two large divisions.Stationary part is by air inlet Partly, the mechanism such as cylinder, dividing plate and static cascade, sealing gland and bearing composition, the cylinder in stationary part are the shells of steam turbine, it The flow passage component of steam turbine is separated with air, forms the air chamber of closing inside steam turbine, ensures that steam is completed inside turbine Conversion process of energy；Rotating part is also known as rotor, and rotor is by structure compositions such as main shaft, impeller, movable vane piece and shaft couplings.Steam turbine When work, each grade blade of high steam and steam turbine of entrance is all perpendicular contact, especially exhaust stage blade, outside blade The linear velocity in footpath is very high.If there is water droplet composition in steam, water droplet vertical direction toward impact last stage vane of steam turbine, huge linear velocity And vertical direction toward impact, it is more likely that cause last stage vane of steam turbine fatigue or even damage.Vertical speed carrier iron rust, the iron of steam The material such as sand and incrustation scale, is entered in steam turbine and vertical direction toward impact blade, will be caused the damage of blade, is especially rotated at a high speed Exhaust stage blade.If broken blade high-speed impact back and forth in cylinder of steam turbine body, it is more likely that cause steam turbine complete machine report It is useless, or even there is even more serious accident.

There is a kind of new-type steam turbine in presently relevant technology, its blade is affixed in the shape of a spiral to be turned as spiral on the rotary shaft Son, then parcel and the sleeve on the outside of helical rotor are formed by bottom plate and rotor protection layer, helical rotor cooperatively forms with sleeve Helical structure, steam enter from the entrance of helical structure, pressure release step by step, and promote helical rotor to rotate, what helical rotor rotated The rotary shaft affixed with it is driven to rotate simultaneously, the output end output kinetic energy of rotary shaft.

New-type steam turbine has the advantages of simple in construction, small volume exhaust stage blade is hardly damaged compared to traditional steam turbine, but There is also some problems.It is very big to enter the vapor pressure of helical structure from rotor inlet, the pressure to make full use of steam, Then the length of helical rotor is relatively long, and the rigidity of rotary shaft is relatively low；When considering that the rigidity of structure of rotary shaft, then be necessarily required to Abandon the utilization rate of high steam.

Based on this, the utility model provides a kind of rotor, steam turbine and the steam turbine equipment of multiple coil structure to solve Certainly above-mentioned technical problem.

Utility model content

The purpose of this utility model is to provide a kind of rotor of multiple coil structure, to solve to have spiral shell in the prior art The technical problem that the length of gyrator is relatively long and moment of torsion is insufficient.

The purpose of this utility model, which also resides in, provides a kind of steam turbine, and the steam turbine includes described multiple coil structure Rotor, for solving above-mentioned technical problem.

Based on above-mentioned purpose, the utility model provides a kind of rotor of multiple coil structure, including rotary shaft and multistage Helical structure；

Every grade of helical structure includes bottom plate, helical blade and the rotor protection for being wrapped in the helical blade outer Layer, the bottom plate cooperatively form the sleeve of one end open with the rotor protection layer, and the sleeve and the helical blade are affixed Cooperatively form helical duct；Every grade of helical structure is blind end close to one end of the bottom plate, away from the bottom plate One end is openend, and the blind ends at different levels are equipped with steam channel；

Helical structure described in the first order is set in the rotary shaft, and the interior edge of helical blade described in the first order with it is described Rotary shaft is affixed；Remaining described helical structure at different levels is sequentially sleeved at described in upper level on helical structure, and the spiral at different levels The interior edge of blade is affixed with the rotor protection layer of helical structure described in upper level；

The rotary shaft includes input and output end；The blind end of helical structure described in odd level is arranged at close to institute The position of input is stated, the blind end of helical structure described in even level is arranged at the position away from the input, so that the The steam channel of helical structure described in one-level connects with the openend of helical structure described in afterbody.

Optionally, the rotor of above-mentioned multiple coil structure, the ring road of every grade of helical structure is along the blind end to institute The size for stating opening extreme direction gradually increases.

Optionally, the rotor of above-mentioned multiple coil structure, the helical duct is in the cylindric or irregular logical of rule Road shape.

The utility model provides a kind of steam turbine, and the steam turbine includes cylinder body, two load-bearing bearings, and above-mentioned more The rotor of level helical structure；

The rotary shaft runs through the cylinder body, and two load-bearing bearings are separately positioned on the rotary shaft and the cylinder body The position of connection.

Optionally, above-mentioned steam turbine, in addition to two thrust bearings；

Two thrust bearings are separately positioned on the position that the rotary shaft is connected with the cylinder body.

Optionally, above-mentioned steam turbine, in addition to the steam inlet pipe road for being ventilated to the helical structure, the steam inlet pipe road Connected with the steam channel.

Optionally, above-mentioned steam turbine, the steam channel of helical structure described in the first order are arranged on the input, the steaming On the end face of the input, another end opening connects the one end open of vapour passage with helical duct described in the first order；

Optionally, above-mentioned steam turbine, the position that the steam inlet pipe road is connected with the input, which is provided with, to be used to prevent from connecting Locate the first sealing gland of gas leakage；Position away from the output end, which is provided with, to be used to prevent gas from the load-bearing bearing and the rotation Second sealing gland of axle discharge.

Optionally, above-mentioned steam turbine, the outer surface of the cylinder body are provided with heat-insulation layer.

The utility model provides a kind of steam turbine equipment, including weighs the rotor of above-mentioned multiple coil passage；

The steam channel is used to pass through gases at high pressure, gas liquid mixture or liquid.

The rotor of the multiple coil structure provided by the utility model, including rotary shaft and multiple coil structure；Every grade The helical structure includes bottom plate, helical blade and the rotor protection layer for being wrapped in the helical blade outer, the bottom plate The sleeve of one end open is cooperatively formed with the rotor protection layer, the sleeve cooperatively forms spiral with the helical blade and led to Road；Every grade of helical structure is blind end close to one end of the bottom plate, and one end away from the bottom plate is openend, The blind ends at different levels are equipped with steam channel；Helical structure described in the first order is set in the rotary shaft, and first order institute Interior edge and the rotary shaft for stating helical blade are affixed；Remaining described helical structure at different levels is sequentially sleeved at spiral described in upper level In structure, and the interior edge of the helical blade at different levels is affixed with the rotor protection layer of helical structure described in upper level；Institute Stating rotary shaft includes input and output end；The blind end of helical structure described in odd level is arranged at close to the input Position, the blind end of helical structure described in even level is arranged at the position away from the input, so that spiral shell described in the first order The steam channel of rotation structure connects with the openend of helical structure described in afterbody.Multiple coil knot provided by the utility model The rotor of structure, shortens the length of helical duct and rotary shaft, while expands the external diameter of helical structure, improves output torque, solves The technical problem of existing single step helical structure output moment of torsion deficiency.

The steam turbine provided by the utility model, including cylinder body, two load-bearing bearings, and above-mentioned multiple coil structure Rotor；The rotary shaft runs through the cylinder body, and two load-bearing bearings are separately positioned on the rotary shaft and the cylinder body The position of connection, substantially increase the utilization rate of high steam.

The steam turbine equipment provided by the utility model, include the rotor of above-mentioned multiple coil passage, the steam Passage is used to pass through gases at high pressure, gas liquid mixture or liquid, solves above-mentioned technical problem.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the rotor for the multiple coil structure that the utility model embodiment 1 provides；

The structure of first order helical structure in the rotor for the multiple coil structure that Fig. 2 provides for the utility model embodiment 1 Schematic diagram；

Fig. 3 is the structural representation for the steam turbine that the utility model embodiment 2 provides；

Fig. 4 is the first structural representation of cylinder body in the steam turbine that the utility model embodiment 2 provides；

Fig. 5 is second of structural representation of cylinder body in the steam turbine that the utility model embodiment 2 provides.

Icon：100- rotary shafts；101- steam channels；200- helical structures；201- bottom plates；202- helical blades；203- Rotor protection layer；210- first order helical structures；211- blind ends；212- openends；220- second level helical structure；230- Three-level helical structure；300- cylinder bodies；301- blow-off lines；400- load-bearing bearings；500- thrust bearings；600- steam inlet pipes road； The sealing glands of 700- first；The sealing glands of 800- second.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

Boiler produces steam, steam is entered by pipeline in the air flue of steam turbine, is driven by burning fuel in electricity generation system The rotor of dynamic steam turbine rotates, and turbine rotor drives coupled rotary shaft to rotate after rotating, the output end of rotary shaft and Generator is connected, and drives electrical power generators, carries out electric power output.Electricity generation system power during, steam turbine serve to Important effect is closed, the energy of the gases at high pressure of flowing, gas liquid mixture and liquid can be changed into the equipment by the equipment The mechanical energy output that rotary shaft rotates at a high speed, and then drive generator powered.

Embodiment 1

Fig. 1 is the structural representation of the rotor for the multiple coil structure that the utility model embodiment 1 provides；Fig. 2 is this reality The structural representation of first order helical structure in the rotor of the multiple coil structure provided with new embodiment 1；Such as Fig. 1 and Fig. 2 It is shown, a kind of rotor of multiple coil structure is provided in the present embodiment, and the rotor of the multiple coil structure includes rotation Axle 100 and multiple coil structure 200；

Every grade of helical structure 200 includes bottom plate 201, helical blade 202 and is wrapped in outside the helical blade 202 The rotor protection layer 203 on edge, the bottom plate 201 cooperatively form the sleeve of one end open, the set with the rotor protection layer 203 Cylinder cooperatively forms helical duct with the helical blade 202；Every grade of helical structure 200 is close to one end of the bottom plate 201 It is blind end 211, one end away from the bottom plate 201 is openend 212, and the blind ends 211 at different levels are equipped with steam Passage 101；

Helical structure 200 described in the first order is set in the rotary shaft 100, and helical blade 202 described in the first order Interior edge and the rotary shaft 100 are affixed；Remaining described helical structure 200 at different levels is sequentially sleeved at helical structure described in upper level On 200, and the rotor protection layer 203 of the interior edge of the helical blade 202 at different levels with helical structure described in upper level 200 It is affixed；

The rotary shaft 100 includes input and output end；The blind end 211 of helical structure 200 described in odd level is all provided with Put close to the position of the input, the blind end 211 of helical structure 200 described in even level is arranged at away from the input The position at end, so that the steam channel 101 of helical structure 200 described in the first order and opening for helical structure described in afterbody 200 Mouth end 212 connects.

Specifically, the rotor of multiple coil structure provided by the utility model is mainly used in steam turbine, high steam Discharged after 200 continuous pressure release of helical structure by multistage, by taking three-level helical structure 200 as an example, high steam is from first order institute The steam channel 101 for stating helical structure 200 enters, and is flowed along the helical duct of the first order, pressure release step by step, and promote helical-blade Piece 202 rotates, and drives the rotary shaft 100 affixed with it to rotate while helical blade 202 rotates, the output end of rotary shaft 100 Output kinetic energy；High steam is flowed into after the openend 212 of first order helical structure 210, enters second level helical structure 220 Steam channel 101 at blind end 211, flowed along second level helical duct, continue pressure release step by step, promote second level spiral Blade 202 rotates；Oppositely oriented due to second level helical blade 202 and first order helical blade 202, gas is along second level spiral shell Rotation passage flowing direction flowed with gas along first order helical duct it is in opposite direction, therefore, 202 turns of second level helical blade Drive the direction that the first order rotor protection layer 203 affixed with it rotates to drive with first order helical structure 210 while dynamic to revolve The direction that rotating shaft 100 rotates is identical.High steam is flowed into after the openend 212 of second level helical structure 220, enters the 3rd Steam channel 101 at the level blind end 211 of helical structure 230, flows along third level helical duct, continues pressure release step by step, pushes away Third level helical blade 202 is moved to rotate；It is oppositely oriented due to third level helical blade 202 and second level helical blade 202, Gas flowed along the direction that third level helical duct flows with gas along second level helical duct it is in opposite direction, therefore, the 3rd Level helical blade 202 drives the direction that the second level rotor protection layer 203 affixed with it rotates and the second level spiral shell while rotation It is identical to revolve the direction that structure 220 drives rotary shaft 100 to rotate.High steam flows into the openend to third level helical structure 230 Directly discharged after 212 by openend 212.

In addition, sleeve and helical blade 202 and the phase interworking of rotary shaft 100 that bottom plate 201 is formed with rotor protection layer 203 Close, will enter blind end 211 high temperature and high pressure steam closing with helical duct in, make its be merely able to along helical duct flowing without The gas leakage at other positions occurs, bottom plate 201 needs to bear the pressure that high steam is applied to it with rotor protection layer 203 Power.Based on this, the material for choosing bottom plate 201 and rotor protection layer 203 is steel alloy, and carries out thickening processing to the two, specifically The big I of thickness is set according to the maximum pressure for the high temperature and high pressure steam for entering steam turbine.

Helical duct of original helical duct turbine high-pressure steam Jing Guo single-stage, from the openend of helical structure 200 212 are expelled directly out, and the air pressure of high steam does not discharge thoroughly, therefore utilization rate is not high, the simple length by increasing helical duct Degree can influence the rigidity of structure of axle again to improve the utilization rate of high steam.Multiple coil structure provided by the utility model turns Son is applied in steam turbine, the utilization rate of the high steam greatly improved, while does not influence the rigidity of structure of axle.

Based on this, the utility model than original technology there is the good rigidity of structure, high steam utilization rate height and output to turn round The advantages of square is big.

In the alternative of the present embodiment, the ring road of every grade of helical structure 200 is opened along the blind end 211 described in The size in the mouth direction of end 212 gradually increases.

To enable high steam to pass through helical duct, the ring road of helical structures 200 at different levels arrives along blind end 211 The size in the direction of openend 212 gradually increases, and high steam flows to last by the blind end 211 of first order helical structure 210 Pressure release step by step during the openend 212 of level helical structure 200, exhaust steam after final pressure release is from afterbody helical structure Discharge 200 openend 212.

In the alternative of the present embodiment, the helical duct of the helical structure 200 is regular cylindrical shape, or irregularly Channel shape.

Specifically, the helical duct that helical blades 202 at different levels are formed with rotor protection layer 203 is not limited only to cylindrical shape Helical duct, irregular shape is can also be, as the diameter of the ring road of helical blade 202 increases step by step, rotor protection layer 203 wraps Wrap and state helical blade 202, formed a big conical cylinder in inswept rear end or increase step by step stepped or other Irregular shape.

It should be noted that the angle of helical blades 202 at different levels can influence flowing velocity of the steam in helical duct. In mutually isostructural steam turbine, only change the angle of first order helical blade 202, when first order helical blade 202 and rotary shaft When 100 central axis angular separation is big, gas is fast by the speed of helical duct；When first order helical blade 202 and rotation The vertical direction angle hour of the center line of rotating shaft 100, gas are slow by the speed of helical duct.Similarly, second level spiral shell is changed The angle of vane piece 202, when the central axis angular separation of second level helical blade 202 and second level rotor protection layer 203 When big, gas is fast by the speed of helical duct；When hanging down for the center line of second level vane piece and second level rotor protection layer 203 Straight angular separation hour, gas are slow by the speed of helical duct.Third level helical structure 230 and third level helical structure Helical structures at different levels 200 after 230 can be by that analogy.

Further, since helical blade 202 needs to contact high steam, and the core missions of whole steam turbine are performed, chosen Superior alloy steel may be selected in the material of helical blade 202.The helical blade 202 of steam turbine is generally more than tens circles, each spiral shell Vane piece 202 is solely subjected to the pressure differential in front and rear helical duct, so need not be very thick.But designing and manufacturing helical blade Its surplus thickness is considered when 202 as far as possible, ensures steam turbine spiral channel pressure, can control completely in the scope being perfectly safe It is interior.Strive for accomplish that whole turbine rotor is disposably put into, spiral channel need not again be opened and overhauled.

Embodiment 2

Fig. 3 is the structural representation for the steam turbine that the utility model embodiment 2 provides；Fig. 4 is the utility model embodiment 2 The first structural representation of cylinder body 300 in the steam turbine of offer；Fig. 5 is in the steam turbine that the utility model embodiment 2 provides Second of structural representation of cylinder body 300.

As shown in figure 3, the steam turbine that the present embodiment provides, includes the multiple coil knot that embodiment 1 provides The rotor of structure, the technical scheme described by embodiment 1 fall within the embodiment, and the technical scheme that embodiment 1 has been described above is no longer Repeated description.

Specifically, as Fig. 3 shows, provide a kind of steam turbine in the present embodiment, the steam turbine include cylinder body 300, Two load-bearing bearings 400, and the rotor of the multiple coil structure described in embodiment 1；

The rotary shaft 100 runs through the cylinder body 300, and two load-bearing bearings 400 are separately positioned on the rotary shaft 100 positions being connected with the cylinder body 300.

Specifically, because rotary shaft 100 rotates at a high speed under the drive of helical blade 202, rotary shaft 100 and cylinder body 300 The position of connection is easily worn, so being mounted with two load-bearing bearings 400 in rotary shaft 100 and the junction of cylinder body 300.

Further, in the alternative of the present embodiment, in addition to two thrust bearings 500；

Two thrust bearings 500 are separately positioned on the position that the rotary shaft 100 is connected with the cylinder body 300.

In order to prevent rotary shaft 100 from axial displacement occurs when rotating, in the position that rotary shaft 100 is connected with cylinder body 300 It is also provided with thrust bearing 500.

Further, in the alternative of the present embodiment, in addition to the steam inlet pipe for being ventilated to the helical structure 200 Road 600, the steam inlet pipe road 600 connect with the steam channel 101.

Further, in the alternative of the present embodiment, the steam channel 101 of helical structure 200 described in the first order is set In the input, the one end open of the steam channel 101 is on the end face of the input, another end opening and the first order The helical duct connection.

Further, in the alternative of the present embodiment, the steam inlet pipe road 600 is set with the position that the input is connected There is the first sealing gland 700 for preventing junction gas leakage；Position away from the output end, which is provided with, to be used to prevent gas from described Load-bearing bearing 400 and the second sealing gland 800 of the rotary shaft 100 discharge.

In order to which the high steam for preventing boiler from discharging leaks in steam inlet pipe road 600 with the position that rotary shaft 100 is connected, The first sealing gland 700 for being used for preventing junction leakage vapour is provided with the position；In addition, in order to prevent in cylinder body 300 away from input Exhaust steam leakage and be not easy to discharge and utilization that blow-off line 301 carries out exhaust steam, be provided with away from the position of the output end For preventing gas from the load-bearing bearing 400 and the second sealing gland 800 of the rotary shaft 100 discharge.

Further, in the alternative of the present embodiment, the steam inlet pipe road 600 has integral type with the cylinder body 300 Structure；Or

The steam inlet pipe road 600 is detachably connected with the cylinder body 300.

As shown in Figure 4 and Figure 5, Fig. 4 is the steam inlet pipe road 600 and cylinder body 300 is the structural representation being detachably connected, Connected mode can be to be threadedly coupled, or the mode of other sealed connections.Fig. 5 is the steam inlet pipe road 600 and the integral type of cylinder body 300 Structure, the structure causes high pressure overall after the entrance of steam inlet pipe road 600, if being leaked at the first sealing gland 700, high steam Also can enter directly into cylinder body 300, it is therefore prevented that the loss of energy and realize nearly zero leakage.

Specifically, the end in the steam inlet pipe road 600 is also demountable structure, in order to the installation of sealing gland.

Further, in the alternative of the present embodiment, the outer surface of the cylinder body 300 is provided with heat-insulation layer.

According to the actual requirements, to prevent the energy of steam from being distributed by the wall of cylinder body 300, in the outer of cylinder body 300 Surface is also provided with heat-insulation layer.If the gas passed through in steam channel is the cryogenic gases such as carbon dioxide or nitrogen, the insulation Layer can also prevent external energy from entering in cylinder body.

Embodiment 3

The steam turbine equipment that the present embodiment provides, include turn of the multiple coil structure of the offer of embodiment 1 Son, the technical scheme described by embodiment 1 fall within the embodiment, and the technical scheme that embodiment 1 has been described above is not repeated to retouch State.

Specifically, in the present embodiment, the steam channel can be used for passing through gases at high pressure, gas liquid mixture or liquid.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of rotor of multiple coil structure, it is characterised in that including rotary shaft and multiple coil structure；

Every grade of helical structure includes bottom plate, helical blade and the rotor protection layer for being wrapped in the helical blade outer, The bottom plate cooperatively forms the sleeve of one end open, the sleeve and the affixed cooperation of the helical blade with the rotor protection layer Form helical duct；Every grade of helical structure is blind end close to one end of the bottom plate, one end away from the bottom plate It is openend, the blind ends at different levels are equipped with steam channel；

Helical structure described in the first order is set in the rotary shaft, and the interior edge of helical blade described in the first order and the rotation Axle is affixed；Remaining described helical structure at different levels is sequentially sleeved at described in upper level on helical structure, and the helical blade at different levels Interior edge it is affixed with the rotor protection layer of helical structure described in upper level；

The rotary shaft includes input and output end；The blind end of helical structure described in odd level is arranged at close to described defeated Enter the position at end, the blind end of helical structure described in even level is arranged at the position away from the input, so that the first order The steam channel of the helical structure connects with the openend of helical structure described in afterbody.

2. the rotor of multiple coil structure according to claim 1, it is characterised in that the ring road of every grade of helical structure Size along the blind end to the opening extreme direction gradually increases.

3. the rotor of multiple coil structure according to claim 1, it is characterised in that the helical duct is in regular circle Tubular or irregular channel shape.

A kind of 4. steam turbine, it is characterised in that the steam turbine includes cylinder body, two load-bearing bearings, and such as claim 1-3 The rotor of multiple coil structure described in any one；

The rotary shaft runs through the cylinder body, and two load-bearing bearings are separately positioned on the rotary shaft and are connected with the cylinder body Position.

5. steam turbine according to claim 4, it is characterised in that also including two thrust bearings；

Two thrust bearings are separately positioned on the position that the rotary shaft is connected with the cylinder body.

6. steam turbine according to claim 5, it is characterised in that also include being used to enter vapour to what the helical structure was ventilated Pipeline, the steam inlet pipe road connect with the steam channel.

7. steam turbine according to claim 6, it is characterised in that the steam channel of helical structure described in the first order is arranged on The input, the one end open of the steam channel is on the end face of the input, described in another end opening and the first order Helical duct connects.

8. steam turbine according to claim 7, it is characterised in that the position that the steam inlet pipe road is connected with the input Provided with the first sealing gland for preventing junction gas leakage；Position away from the output end, which is provided with, to be used to prevent gas to hold from described Solid axle holds the second sealing gland with rotary shaft discharge.

9. steam turbine according to claim 8, it is characterised in that the outer surface of the cylinder body is provided with heat-insulation layer.

10. a kind of steam turbine equipment, it is characterised in that including the multiple coil passage described in claim 1-3 any one Rotor；

The steam channel is used to pass through gases at high pressure, gas liquid mixture or liquid.