CN216554034U - Rotor of gas excess pressure turbine power generation equipment - Google Patents

Abstract

The utility model relates to a gaseous excess pressure turbine power generation technical field discloses a gaseous excess pressure turbine power generation equipment rotor, and this gaseous excess pressure turbine power generation equipment rotor includes: main shaft, moving blade and locating part. The outer peripheral surface of the main shaft is provided with a mortise, the moving blade is provided with a tenon, the tenon is inserted into the mortise to connect the moving blade with the main shaft and limit the moving blade to move along the circumferential direction of the main shaft, and the limiting parts are detachably fixed at two ends of an opening of the mortise to limit the moving blade to move along the axial direction of the main shaft. Through the mode, the moving blade dismounting process of the gas excess pressure turbine power generation equipment is simplified, and the daily maintenance and repair efficiency of the equipment is improved.

Description

Rotor of gas excess pressure turbine power generation equipment

Technical Field

The utility model relates to the technical field of gas excess pressure turbine power generation, in particular to a rotor of gas excess pressure turbine power generation equipment.

Background

The gas excess pressure turbine power generation equipment is equipment which utilizes pressure energy and heat energy of blast furnace top gas, which is a byproduct of blast furnace smelting, to make gas do work through a turbine expander, convert the gas into mechanical energy and convert the mechanical energy into electric energy. In the prior art, a rotor of a gas residual pressure turbine power generation device adopts a fixing pin and a locking plate to fix a moving blade on a main shaft, when one or more moving blades need to be replaced, the fixing pin of the moving blade to be replaced and a locking device (the locking plate) shared by the moving blade and other parts need to be replaced after being damaged, so that the moving blade is difficult to disassemble, and the maintenance efficiency and the maintenance cost during equipment maintenance are seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a gas residual pressure turbine power generation equipment rotor for solving the problems of difficulty in dismounting a moving blade and high dismounting cost in the prior art.

The application provides a gas excess pressure turbine power generation equipment rotor includes: the outer peripheral surface of the main shaft is provided with a mortise; a moving blade provided with a tenon which is inserted into the mortise to connect the moving blade with the main shaft and which restricts the moving blade from moving in a circumferential direction of the main shaft; and the limiting pieces are detachably fixed at two ends of the opening of the mortise to limit the moving blade to move along the axial direction of the main shaft.

The movement of the rotor blade in the circumferential direction of the main shaft is restricted by providing a mortise on the outer circumferential surface of the main shaft and a tenon on the rotor blade. The limiting parts are detachably arranged at the two ends of the mortise opening, so that the moving blade is limited to move along the axial direction of the main shaft. When the moving blade needs to be replaced, any part does not need to be damaged, only the limiting piece at any end of the mortise is detached, and then the moving blade is taken out along the mortise to complete detachment. Thereby making the apparatus easy

The dismouting has promoted maintenance efficiency when the overhaul of the equipments, has reduced cost of maintenance.

In some embodiments, the gas overbottom turbine power plant rotor further comprises a threaded fastener and a lock washer; the limiting piece is provided with a first positioning hole, the two ends of the main shaft are provided with second positioning holes, and the threaded fastener penetrates through the locking gasket and the first positioning hole and is inserted into the second positioning hole, so that the limiting piece is fixed at the two ends of the opening of the mortise.

In the above embodiment, when the first positioning hole is aligned with the second positioning hole and the threaded fastener is screwed, the limiting member is fixed to the spindle. Prevent that the locating part from receiving the damage because of wrench movement threaded fastener through setting up lock washer.

In some embodiments, the stopper is plate-shaped and completely covers the mortise; the limiting part is formed by splicing a plurality of sub limiting parts in the same plane.

Choose for use platelike locating part, can save the inner space of equipment, reserve bigger operating space for the locating part dismouting, and choose for use the structure that a plurality of sub-locating parts were assembled, further make the locating part also can accomplish the dismouting in narrow and small space to the equipment dismouting of being convenient for. Make the locating part shelter from the tongue-and-groove completely, can the separation gas and dust get into the tongue-and-groove, the protection part does not receive the harm of corrosive substance.

In some embodiments, the rotor blades include first stage rotor blades and second stage rotor blades; the first-stage moving blade is provided with a first tenon, and the second-stage moving blade is provided with a second tenon; the first-stage moving blade is connected with the main shaft through the first tenon and the mortise, and the second-stage moving blade is connected with the main shaft through the second tenon and the mortise.

Through the hierarchical setting to the moving blade, can realize when partial moving blade damages need the maintenance, only need to change the moving blade that has damaged to reduce cost of maintenance, improve maintenance efficiency.

In some embodiments, a spacer is provided between the first-stage moving blade and the second-stage moving blade, and the spacer is detachably fixed to an outer circumferential surface of the main shaft to separate the first-stage moving blade from the second-stage moving blade.

The technical scheme that the spacer bush is additionally arranged between the first-stage moving blade and the second-stage moving blade can ensure that the first-stage moving blade and the second-stage moving blade keep a relatively stable distance. The spacer bush is matched with the limiting parts at two ends to clamp the first-stage moving blade and the second-stage moving blade, the positions of the first-stage moving blade and the second-stage moving blade in the axial direction of the main shaft are further fixed, and the stability of the structure is enhanced. In addition, the spacer sleeve can also play the sealed effect of certain degree to the clearance between first tenon and the second tenon, and separation gas and dust prevent that gas and dust from getting into in the tongue-and-groove.

In some embodiments, the mortise comprises a first mortise and a second mortise; the first-stage moving blade is connected with the main shaft through the first tenon and the first mortise, and the second-stage moving blade is connected with the main shaft through the second tenon and the second mortise; the two ends of the opening of the first mortise and the two ends of the opening of the second mortise are respectively provided with the limiting parts.

The two ends of the opening of the first mortise and the two ends of the opening of the second mortise are respectively provided with the limiting parts, so that the arrangement of the spacer sleeve can be omitted, and the equipment cost is reduced. The locating part that utilizes to be located between one-level moving blade and the second grade moving blade replaces the spacer sleeve, and the separation is gaseous and the dust more effectively, makes the leakproofness of equipment further improve, and when moving blade or tongue-and-groove part damaged, only need demolish the moving blade that damages, other moving blades that do not have the damage need not demolish, the reduction of overhaul period.

In some embodiments, the spindle further includes a spindle body and a wheel disc, the wheel disc is detachably sleeved on the outer peripheral surface of the spindle body, the outer peripheral surface of the wheel disc is provided with the mortise, and the moving blade is connected with the wheel disc through the tenon and the mortise.

The rotating radius of the main shaft is increased by arranging the wheel disc, the working efficiency is improved, when the mortise is damaged, the wheel disc is only required to be replaced through the detachable connecting structure of the wheel disc without maintaining or replacing the main shaft body, the maintenance of the equipment can be completed, and the maintenance cost is reduced.

In some embodiments, the rotor blades include first stage rotor blades and second stage rotor blades; the first-stage moving blade is provided with a first tenon, and the second-stage moving blade is provided with a second tenon; the spindle further comprises a spindle body and a wheel disc, and the wheel disc is detachably sleeved on the peripheral surface of the spindle body; the wheel disc comprises a primary wheel disc and a secondary wheel disc; the first-stage wheel disc is provided with a third mortise, and the second-stage wheel disc is provided with a fourth mortise; the first-stage moving blade is connected with the first-stage wheel disc through the first tenon and the third mortise, and the second-stage moving blade is connected with the second-stage wheel disc through the second tenon and the fourth mortise.

In the scheme, the first-stage moving blade and the second-stage moving blade are independently arranged, so that when the moving blades need to be replaced, the moving blades at the damaged parts can be replaced as described above, and the replacement cost of the moving blades is reduced; through independently setting up one-level rim plate and second grade rim plate, like the reason when the rim plate needs to be changed or maintain, can change to the rim plate of damage part, reduced the replacement cost of rim plate. Therefore, in the scheme of the embodiment, the damaged part can be replaced or maintained more accurately, other parts do not need to be detached in the replacement or maintenance process, the maintenance cost is further reduced, and the maintenance period is shortened.

In some embodiments, the rotor of the gas excess pressure turbine power generation device further includes a plurality of bushings detachably connected to the outer circumferential surface of the main shaft, and the bushings are respectively disposed at two ends of the primary wheel disc in the axial direction of the main shaft and at two ends of the secondary wheel disc in the axial direction of the main shaft, so as to limit movement of the primary wheel disc and the secondary wheel disc in the axial direction of the main shaft.

Through the scheme of arranging the shaft sleeve, the positions of the first-stage wheel disc and the second-stage wheel disc in the axial direction of the main shaft are relatively fixed. Therefore, in the work process, the primary wheel disc and the secondary wheel disc cannot move in opposite directions or separate from the main shaft, and the stability and the safety of the equipment structure are enhanced.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

FIG. 1 illustrates a partial structural perspective view of a rotor of a gas overbottom turbine power plant provided in accordance with an embodiment of the present application;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a side view of the structure shown in FIG. 1;

FIG. 5 is an enlarged view of the portion B of FIG. 2;

FIG. 6 illustrates a partial structural side view of a rotor of a gas overbottom turbine power plant in accordance with another embodiment of the present application;

FIG. 7 illustrates a partial structural side view of a rotor of a gas overbottom turbine power plant according to yet another embodiment of the present application.

The reference numbers in the detailed description are as follows:

the gas residual pressure turbine power generation device rotor 100, a main shaft 10, a tongue groove 11, a main shaft body 12, a disk 13, a rib 14, a primary disk 131, a secondary disk 132, a rotor blade 20, a primary rotor blade 20a, a secondary rotor blade 20b, a tenon 21, a first tenon 21a, a second tenon 21b, a limiting member 30, a first positioning hole 31, a second positioning hole 141, a threaded fastener 40, a lock washer 50, a spacer 60, a shaft sleeve 70, an axial direction X, and a circumferential direction Y.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: there are three cases of A, A and B, and B. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, Gas excess pressure Turbine power generation equipment, such as Blast Furnace Gas excess pressure Turbine power generation equipment (TRT), is equipment which utilizes pressure energy and heat energy of Blast Furnace Top Gas, which is a byproduct of Blast Furnace smelting, to make Gas work through a Turbine expander, convert the Gas into mechanical energy, and then convert the mechanical energy into electric energy. Namely, the TRT rotor rotates under the action of coal gas, and then drives the generator rotor to cut magnetic induction lines to do work, so that mechanical energy is converted into electric energy. The rated power of the turbine generator matched with the blast furnace is different from 1000-30000 kW. The gas residual pressure turbine power generation equipment is a great energy-saving device which is widely popularized in China.

Because the TRT belongs to high-speed rotating equipment, the TRT has high requirements on the components of a coal gas medium entering the TRT, requires that the dust content is less than 10mg/Nm3, and does not contain or contains as little corrosive elements as possible, so that the service life of TRT moving blades is ensured, and the long-period operation of a unit is ensured. However, the use states of equipment such as ore sources of a plurality of blast furnaces, smelting habits of blast furnace operators, dust removal, corrosion and scale inhibition and the like in China cannot meet the requirements. The dust content of the blast furnace gas exceeds the standard and the content of corrosive elements exceeds the standard. Therefore, TRT moving blades and a main shaft are damaged, the maintenance frequency is increased, and the service cycle of the unit cannot be expected.

In the existing TRT rotor assembly, the moving blades are fixed on the main shaft by adopting a fixing structure of a fixing pin and a locking plate, when one or more moving blades need to be replaced, the moving blades to be replaced and a locking device shared by the moving blades and other parts need to be damaged and then replaced, the moving blades are difficult to disassemble, and the locking device cannot be continuously used after being damaged, so that the maintenance efficiency and the maintenance cost during equipment maintenance are seriously influenced.

In view of the above, in order to solve the problems of difficulty in detaching a moving blade and high detachment cost in the prior art, the inventors of the present invention conducted extensive studies, and designed a rotor for a gas residual pressure turbine power generation apparatus, and improved a connection structure of the moving blade and a main shaft, in which a mortise is provided on an outer circumferential surface of the main shaft and a tenon is provided on the moving blade, and the tenon is inserted into the mortise to restrict movement of the moving blade in a circumferential direction of the main shaft. In addition, limiting parts are detachably arranged at two ends of the mortise opening so as to limit the moving of the moving blade along the axial direction of the main shaft. When the moving blade needs to be replaced, any part does not need to be damaged, only the limiting piece at any end of the mortise is detached, and then the moving blade needing to be replaced can be taken out along the mortise to complete detachment. Therefore, the equipment is easy to disassemble and assemble, the maintenance efficiency during equipment maintenance is improved, and the maintenance cost is reduced.

Unless otherwise specified, the term "plant" as used hereinafter refers to a gas turbine power plant rotor.

Referring to fig. 1, 2, 3 and 4, fig. 1 is a perspective view illustrating a partial structure of a rotor of a gas excess pressure turbine power generation device provided by an embodiment of the present application, fig. 2 is an exploded view illustrating the structure of fig. 1, fig. 3 is an enlarged view of a portion a of fig. 2, and fig. 4 is a side view illustrating the structure of fig. 1. The gas residual pressure turbine power generation device rotor 100 comprises a main shaft 10, a moving blade 20 and a limiting piece 30, wherein a mortise 11 is arranged on the outer circumferential surface of the main shaft 10, the moving blade 20 is provided with a tenon 21, and the tenon 21 is inserted into the mortise 11 so as to connect the moving blade 20 with the main shaft 10 and limit the moving blade 20 to move along the circumferential direction Y of the main shaft 10; stoppers 30 are detachably provided at both ends of the opening of the mortise 11 to restrict the moving blades 20 from moving in the axial direction X of the main shaft 10.

The tenon 21 is a convex portion of the member connected by male and female means, and the mortise 11 is a concave portion of the member connected by male and female means. The snap-fit connection of the "tenon 21" and the "mortise slot 11" effectively secures the components. The single tenon 21 generally includes a plurality of tenon teeth, and correspondingly, the single mortise 11 generally includes a plurality of mortises. In addition, the tenon 21 and the mortise 11 have various types in practical use, such as a convex square tenon, a circular tenon, a double-layer tenon, a dovetail tenon, a tongue-and-groove tenon, and the like, and in the present embodiment, the fir-tree tenon 21 and the fir-tree mortise 11 are preferably used, see fig. 3.

The outer peripheral surface of the main shaft 10 is provided with a mortise 11, and the mortise 11 is provided at a position where the rotor blades 20 are to be provided at intervals on the outer peripheral surface of the main shaft 10.

The opening at both ends of the mortise 11 means that both ends of the mortise 11 in the axial direction X of the main shaft 10 are opened, and the rotor blade 20 is attachable and detachable through the opening.

The tenon 21 is inserted into the mortise 11 in such a manner that the tenon 21 is inserted into the mortise 11 from both end openings of the mortise 11 in the axial direction X of the main shaft 10, and thereafter, a plurality of dowels included in the tenon 21 are engaged with a plurality of mortises included in the mortise 11. When the device is in operation, the structure can effectively counteract the centrifugal force which is applied to the moving blades 20 by the main shaft 10 under high-speed rotation, thereby limiting the moving blades 20 to move along the circumferential direction Y of the main shaft 10.

The limiting members 30 are required to block at least a part of the openings at the two ends of the mortise 11, and the limiting members 30 block the passage of the tenon 21 into and out of the mortise 11, so as to limit the moving blade 20 from moving along the axial direction X of the main shaft 10, prevent the moving blade 20 from being separated from the main shaft 10, and ensure the normal operation of the moving blade 20.

After the rotor blade 20 is connected to the main shaft 10, the rotor blade 20 cannot move in the circumferential direction Y of the main shaft 10 due to the restriction of the mortise 11 of the main shaft 10. In addition, by providing the stoppers 30 at both ends of the mortise 11, when the rotor blade 20 needs to be replaced, the stopper 30 at any end can be removed, and the rotor blade 20 can be taken out, thereby completing the removal.

During the operation of the device, the moving blade 20 can be fixed on the main shaft 10 due to the limitation of the mortise 11 and the limiting piece 30 of the main shaft 10, and the main shaft 10 rotates under the action of the gas in the device, so that the moving blade 20 is driven to rotate along with the rotation of the main shaft 10, and further energy conversion is realized.

In the embodiment of the present invention, the movement of the rotor blade 20 in the circumferential direction Y of the main shaft 10 is restricted by providing the mortise 11 on the outer circumferential surface of the main shaft 10 and providing the tenon 21 on the rotor blade 20. By detachably providing stoppers 30 at both ends of the opening of the mortise 11, the movement of the rotor blade 20 in the axial direction X of the main shaft 10 is restricted. When the moving blade 20 needs to be replaced, the limiting members 30 at either end of the mortise 11 are removed without destroying any component, and then the moving blade 20 is taken out along the mortise 11 to complete the removal. Thereby make this equipment easily dismouting, maintenance efficiency when having promoted the overhaul of the equipments has reduced cost of maintenance.

The position limiting member 30 has a plurality of fixing manners, please refer to fig. 2 and fig. 5, in which fig. 2 is an exploded view of the structure shown in fig. 1, and fig. 5 is an enlarged view of a portion B in fig. 2. In some embodiments, a first positioning hole 31 is formed in the position-limiting member 30, a second positioning hole 141 is formed at both ends of the main shaft 10, and a threaded fastener 40 is inserted into the second positioning hole 141 through the lock washer 50 and the first positioning hole 31, so that the position-limiting member 30 is fixed at both open ends of the mortise 11.

The first positioning hole 31 is disposed on the limiting member 30, and the threaded fastener 40 is inserted into the second positioning hole 141 through the first positioning hole 31, so that the limiting member 30 is fixed at two ends of the opening of the mortise 11, and the limiting member 30 can block at least a portion of the opening at two ends of the mortise 11. The second positioning hole 14 is disposed on the rib 14 of the mortise 11, and has an inner thread on an inner circumferential surface thereof, and when the first positioning hole 31 is aligned with the second positioning hole 141 and the threaded fastener 40 is screwed, the inner thread cooperates with the outer thread of the threaded fastener 40 to fix the limiting member 30 to the main shaft 10.

The threaded fasteners 40 may be bolts, screws, studs, and the like.

The lock washer 50 is located between the threaded fastener 40 and the position-limiting member 30, and is provided with a through hole, the threaded fastener 40 passes through the through hole of the lock washer 50 and the first positioning hole 31 and then is inserted into the second positioning hole 141, when the threaded fastener 40 is screwed in or out, the lock washer 50 plays a role in increasing friction force and preventing the position-limiting member 30 from being damaged by twisting the threaded fastener 40.

The position limiting member 30 can take various shapes and structures, and in some embodiments, the plate-shaped position limiting member 30 with a splicing structure is used in consideration of the size of the space occupied by the position limiting member 30 and the size of the space required for assembling and disassembling. Specifically, referring to fig. 2, the tongue-and-groove 11 is completely covered by the plate-shaped limiting member 30, wherein the limiting member 30 may adopt an integral structure shown in the figure, or a splicing structure in which a plurality of sub-limiting members are located in the same plane.

The plate-shaped stopper 30 means that the stopper 30 has a small thickness, thereby saving an internal space in the axial direction X. In application, the position-limiting member 30 is preferably a circular or annular plate-like structure, which can be adapted to the shape of the main shaft 10, so as to better position the moving blade 20 and block the mortise 11.

The splicing structure is formed by splicing a plurality of sub-limiting members (the sub-limiting members are still plate-shaped) in the same plane, so that the assembly and disassembly are more convenient, and the space requirement for assembling and disassembling the limiting members 30 is lower.

The complete covering of the mortise 11 means that the rib 14 and the openings at both ends of the mortise 11 are completely covered by the stopper 30, and the stopper can restrict the movement of the rotor blade 20 in the axial direction X of the main shaft 10 and also can block gas and dust.

With continued reference to FIG. 2, in some embodiments, the rotor blade 20 includes a first stage rotor blade 20a and a second stage rotor blade 20b, the first stage rotor blade 20a is provided with a first tenon 21a, and the second stage rotor blade 20b is provided with a second tenon 21 b. The first-stage moving blade 20a is connected to the main shaft 10 through a first tenon 21a and a mortise 11, and the second-stage moving blade 20b is connected to the main shaft 10 through a second tenon 21b and the mortise 11.

The terms "first stage" and "second stage" are used merely for identifying two rotor blades 20, and the first stage rotor blades 20a and the second stage rotor blades 20b may be rotor blades 20 having the same structure or rotor blades 20 having different structures. The first tenon 21a and the second tenon 21b have the same structure as the tenon 21 described above, and are not described in detail herein.

During installation, the first tenon 21a and the second tenon 21b are inserted into the mortise 11 of the spindle 10, and the limiting members 30 are installed on two sides of the opening of the mortise 11 as described above. During disassembly, the limiting members 30 on either side are disassembled, and then the first tenon 21a and/or the second tenon 21b to be replaced slide out along the mortise 11 through the opening of the mortise 11.

This embodiment is through setting up one-level moving blade 20a and set up first tenon 21a on one-level moving blade 20a, set up second level moving blade 20b and set up second tenon 21b on second level moving blade 20b, make original moving blade 20 divide into independent two parts, namely one-level moving blade 20a and second level moving blade 20b, when moving blade 20 part damages, need not whole change and can accomplish the maintenance, when moving blade 20 damages to need to be changed, if damage part is located one-level moving blade 20a, only need dismantle earlier and be close to the locating part 30 of one-level moving blade 20a, can take out one-level moving blade 20a, second level moving blade 20b need not to change and dismouting at this in-process. Therefore, in the scheme, the limit piece 30 is arranged to improve the maintenance efficiency and reduce the maintenance cost, and the movable blade 20 is arranged in a grading manner, so that the maintenance can be completed without replacing the movable blade 20 completely when the movable blade 20 is partially damaged, and the maintenance cost is further reduced.

The above embodiments also have various implementations, and for convenience of explanation, two specific examples are provided below, and it should be noted that the implementations included in the present application include, but are not limited to, the following two:

referring to fig. 4, in the first embodiment, a spacer 60 is additionally provided between the first-stage moving blade 20a and the second-stage moving blade 20b, and the spacer 60 is detachably fixed to the outer circumferential surface of the main shaft 10 to separate the first-stage moving blade 20a from the second-stage moving blade 20 b.

Specifically, as for the connection of the spacer 60 to the main shaft 10, reference is made to the connection of the rotor blade 20 to the main shaft 10 as described above, and one end of the spacer 60 abuts against the first-stage rotor blade 20a and the other end abuts against the second-stage rotor blade 20 b. It will be appreciated by those skilled in the art that the spacer 60 may be attached to the spindle 10 in a sleeved manner.

By adding the spacer 60 between the first-stage moving blades 20a and the second-stage moving blades 20b, the first-stage moving blades 20a and the second-stage moving blades 20b can be kept at a relatively stable distance. The spacer 60 cooperates with the stoppers 30 at both ends to clamp the first-stage moving blade 20a and the second-stage moving blade 20b, and further fixes the positions of the first-stage moving blade 20a and the second-stage moving blade 20b in the axial direction X of the main shaft 10, thereby enhancing the structural stability. In addition, the spacer 60 can also play a certain sealing role in the gap between the first tenon 21a and the second tenon 21b, block gas and dust, and prevent the gas and dust from entering the mortise 11.

Referring to fig. 6, fig. 6 illustrates a partial structural side view of a rotor of an excess gas turbine power plant according to another embodiment of the present application. In the second embodiment, the mortise 11 includes a first mortise and a second mortise, the first-stage moving blade 20a is connected to the main shaft 10 through the first tenon 21a and the first mortise, and the second-stage moving blade 20b is connected to the main shaft 10 through the second tenon 21b and the second mortise; both ends of the opening of the first mortise and both ends of the opening of the second mortise are respectively provided with a limiting member 30.

In the present embodiment, the first tenon 21a is inserted into the first mortise, so that the first-stage moving blade 20a is connected to the main shaft 10, and movement of the first-stage moving blade 20a in the circumferential direction Y of the main shaft 10 is restricted; the second tenon 21b is inserted into the second mortise, connects the second-stage moving blade 20b to the main shaft 10, and restricts movement of the second-stage moving blade 20b in the circumferential direction Y of the main shaft 10.

The two ends of the first mortise opening and the two ends of the second mortise opening are respectively provided with a limiting member 30, one set of limiting members 30 is used for limiting the first-stage moving blade 20a to move in the first mortise along the axial direction X, and the other set of limiting members 30 is used for limiting the second-stage moving blade 20b to move in the second mortise along the axial direction X. The first-stage moving blades 20a and the second-stage moving blades 20b are fixed to the first dovetail groove and the second dovetail groove, respectively, by the two sets of stoppers 30, so that the spacer 60 can be omitted.

Through the second specific embodiment, the two ends of the opening of the first mortise and the two ends of the opening of the second mortise are respectively provided with the limiting members 30, so that the arrangement of the spacer 60 can be omitted, and the equipment cost can be reduced. The spacing piece 30 between the first-stage moving blade 20a and the second-stage moving blade 20b is used for replacing the spacer sleeve 60, so that gas and dust can be effectively separated, the sealing performance of equipment is further improved, when the moving blade or the tongue-and-groove part is damaged, only the damaged moving blade needs to be removed, other moving blades which are not damaged do not need to be removed, and the overhaul period is shortened.

Referring to fig. 7, fig. 7 is a partial side view of a rotor of a gas over-pressure turbine power plant according to yet another embodiment of the present application. In some embodiments, the main shaft 10 of the gas residual pressure turbine power generation device rotor 100 further includes a main shaft body 12 and a disk 13, the disk 13 is detachably fitted on the outer circumferential surface of the main shaft body 12, a tongue-and-groove is provided on the outer circumferential surface of the disk 13, and the moving blades 20 are connected with the disk 13 through a tongue and a tongue-and-groove.

The disk 13 is cylindrical, the inner circumferential surface of the cylinder is detachably connected to the main shaft body 12, and the outer circumferential surface of the cylinder is provided with a tongue-and-groove for connecting the rotor blades 20. The radial thickness of the disk 13 may be arbitrarily selected depending on the application environment. Through setting up the rim plate 13 of certain thickness, can increase the radius of rotation of main shaft 10, and the manufacturing of main shaft body 12 is difficult big usually, and the cost is high, and change and maintenance all need higher cost, and it is usually consuming time longer to the maintenance of main shaft body 12, can avoid gas and dust direct corrosion main shaft body 12 through setting up rim plate 13 to reduce cost of maintenance.

In this embodiment, the limiting members 30 are respectively disposed at two open ends of the mortise 11 on the periphery of the wheel disc 13. When the device is operated, the main shaft body 12 drives the rotor blades 20 to rotate along the circumferential direction Y of the main shaft 10 by driving the rotor disc 13 to rotate. When equipment needs to be maintained, the equipment is disassembled with difficulty through the detachable structures of the moving blade 20, the wheel disc 13 and the limiting piece 30, so that the maintenance efficiency is improved.

With reference to fig. 7, in another embodiment of the above embodiment, the rotor blade 20 further includes a first stage rotor blade 20a and a second stage rotor blade 20b, wherein the first stage rotor blade 20a is provided with a first tenon 21a, and the second stage rotor blade 20b is provided with a second tenon 21 b. The wheel disc 13 further comprises a first-level wheel disc 131 and a second-level wheel disc 132, wherein the first-level wheel disc 131 is provided with a third mortise, and the second-level wheel disc 132 is provided with a fourth mortise. The first tenon 21a is inserted into the third mortise to connect the first-stage moving blade 20a to the first-stage disk 131, and the second tenon 21b is inserted into the fourth mortise to connect the second-stage moving blade 20b to the second-stage disk 132.

The stoppers 30 are provided at both ends of the third dovetail and at both ends of the fourth dovetail opening, respectively, to restrict the movement of the first-stage moving blades 20a and the second-stage moving blades 20b in the axial direction X of the main shaft 10. When the apparatus is in operation, the main shaft body 12 drives the first-stage disk 131 and the second-stage disk 132 to further drive the first-stage moving blades 20a and the second-stage moving blades 20b to rotate along the circumferential direction Y of the main shaft 10.

In the above solution, by providing the first-stage moving blade 20a and the second-stage moving blade 20b independently, when the moving blade 20 needs to be replaced, the moving blade 20 in the damaged portion can be replaced as described above, thereby reducing the replacement cost of the moving blade 20; through independently setting up one-level rim plate 131 and second grade rim plate 132, when rim plate 13 need be changed or maintained, can change to the rim plate 13 of damage part like this, reduced rim plate 13's replacement cost. Therefore, in the scheme of the embodiment, the damaged part can be replaced or maintained more accurately, other parts do not need to be detached in the replacement or maintenance process, the maintenance cost is further reduced, and the maintenance period is shortened.

With continued reference to fig. 7, in some embodiments, the rotor of the gas turbine power generating device further includes a plurality of bushings 70, the plurality of bushings 70 being detachably connected to the outer circumferential surface of the main shaft body 12 and respectively disposed at two ends of the primary disk 131 in the axial direction X of the main shaft 10 and at two ends of the secondary disk 132 in the axial direction X of the main shaft 10 to limit the movement of the primary disk 131 and the secondary disk 132 in the axial direction X of the main shaft.

Through the above scheme of setting up axle sleeve 70, restricted the removal of one-level rim plate 131 and second grade rim plate 132 along main shaft axial direction X, made rim plate 13 and main shaft body 12 relatively fixed, strengthened the stability and the security of equipment structure.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (9)

1. A gas overbottom pressure turbine power plant rotor comprising:

the outer peripheral surface of the main shaft is provided with a mortise;

a moving blade provided with a tenon which is inserted into the mortise to connect the moving blade with the main shaft and which restricts the moving blade from moving in a circumferential direction of the main shaft;

and the limiting pieces are detachably fixed at two ends of the opening of the mortise to limit the moving blade to move along the axial direction of the main shaft.

2. The gas overbottom turbine power plant rotor of claim 1, further comprising a threaded fastener and a lock washer; the limiting piece is provided with a first positioning hole, the two ends of the main shaft are provided with second positioning holes, and the threaded fastener penetrates through the locking gasket and the first positioning hole and is inserted into the second positioning hole, so that the limiting piece is fixed at the two ends of the opening of the mortise.

3. The gas residual pressure turbine power plant rotor according to claim 1, wherein the retainer is plate-shaped and completely blocks the mortise; the limiting part is formed by splicing a plurality of sub limiting parts in the same plane.

4. The gas excess pressure turbine power plant rotor according to any one of claims 1 to 3,

the moving blades comprise first-stage moving blades and second-stage moving blades;

the first-stage moving blade is provided with a first tenon, and the second-stage moving blade is provided with a second tenon;

the first-stage moving blade is connected with the main shaft through the first tenon and the mortise, and the second-stage moving blade is connected with the main shaft through the second tenon and the mortise.

5. The rotor for a residual gas pressure turbine power generation device according to claim 4, wherein a spacer is provided between the first-stage moving blade and the second-stage moving blade, and the spacer is detachably fixed to an outer circumferential surface of the main shaft body to separate the first-stage moving blade from the second-stage moving blade.

6. The gas overbottom turbine power plant rotor of claim 4, wherein said mortise comprises a first mortise and a second mortise; the first-stage moving blade is connected with the main shaft through the first tenon and the first mortise, and the second-stage moving blade is connected with the main shaft through the second tenon and the second mortise; the two ends of the opening of the first mortise and the two ends of the opening of the second mortise are respectively provided with the limiting parts.

7. The rotor for a gas residual pressure turbine power generation device according to claim 1, wherein the main shaft further includes a main shaft body and a disk, the disk is detachably fitted to an outer circumferential surface of the main shaft body, the outer circumferential surface of the disk is provided with the mortise, and the rotor blade is connected to the disk through the tenon and the mortise.

8. The gas overbottom turbine power plant rotor of claim 1,

the moving blades comprise first-stage moving blades and second-stage moving blades;

the first-stage moving blade is provided with a first tenon, and the second-stage moving blade is provided with a second tenon;

the spindle further comprises a spindle body and a wheel disc, and the wheel disc is detachably sleeved on the peripheral surface of the spindle body;

the wheel disc comprises a primary wheel disc and a secondary wheel disc;

the first-stage wheel disc is provided with a third mortise, and the second-stage wheel disc is provided with a fourth mortise;

the first-stage moving blade is connected with the first-stage wheel disc through the first tenon and the third mortise, and the second-stage moving blade is connected with the second-stage wheel disc through the second tenon and the fourth mortise.

9. The rotor of a gas excess pressure turbine power generation device according to claim 8, further comprising a plurality of bushings detachably connected to the outer circumferential surface of the main shaft and respectively provided at both ends of the primary disk in the axial direction of the main shaft and both ends of the secondary disk in the axial direction of the main shaft to restrict movement of the primary disk and the secondary disk in the axial direction of the main shaft.

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