CN217841747U

CN217841747U - Corrosion-resistant blade of steam turbine

Info

Publication number: CN217841747U
Application number: CN202222244031.4U
Authority: CN
Inventors: 赵同斌
Original assignee: Yiyuan Huayang Energy Equipment Co ltd
Current assignee: Yiyuan Huayang Energy Equipment Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-18
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a corrosion-resistant blade of a steam turbine, which comprises a blade body and a drainage structure, wherein a shroud is integrally formed at the top of the blade body, and the drainage structure is arranged in the shroud; the drainage structure comprises water outlets which are arranged on the left side and the right side of the surrounding belt, a water through hole is formed in the surrounding belt, an epoxy resin layer is positioned at the edge of the water through hole and bonded in the surrounding belt, an article placing groove is formed in the bottom of the middle of the epoxy resin layer, and a flushing block is bonded on the top of the surrounding belt; the lower rubber block is bonded with the bottom of the surrounding belt, and the top of the upper rubber block is bonded with a connecting block; the top of the connecting block is inserted with a flow guide rod, and the flow guide rod penetrates through the bottom of the water through hole; and the guide pipe penetrates through the water through hole and is bonded with a sealing ring. This corrosion-resistant blade of steam turbine possesses at shroud internally mounted has drainage structures, can discharge the liquid of hanging in the shroud both sides through a water drum and the cooperation of water conservancy diversion pole, and then promote advantages such as corrosion resisting property of steam turbine.

Description

Corrosion-resistant blade of steam turbine

Technical Field

The utility model relates to a turbine blade technical field specifically is a corrosion-resistant blade of steam turbine.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in metallurgical industry, chemical industry and ship power plants.

Corrosion-resistant blade of steam turbine on the market, a corrosion-resistant steam turbine moving blade disclosed in chinese utility model patent application publication No. CN209724421U, though this corrosion-resistant steam turbine moving blade shroud and the breach that admits air the limit junction is equipped with and runs through the shroud, can make the water droplet that strikes on the moving blade throw away from breach department under the effect of centrifugal force, thereby reduce the water droplet and lose the influence to the shroud, the problem of water erosion of moving blade in operation blade and shroud junction has been solved, the unit safe operation has been guaranteed, but only carry out the design of drainage through a breach to liquid, still there is liquid to hang and lead to the possibility of blade corrosion to take place in breach department.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art not enough, the utility model provides a corrosion-resistant blade of steam turbine possesses and has drainage structures at shroud internally mounted, can discharge the liquid of hanging in the shroud both sides through a water drum and guide bar cooperation, and then promote advantages such as the corrosion resisting property of steam turbine, has solved only and has carried out the design of drainage through a breach to liquid, still has liquid to hang the problem that the possibility that leads to the blade to corrode in breach department takes place.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a corrosion-resistant blade of steam turbine, includes blade body and drainage structures, blade body top integrated into one piece has the shroud, drainage structures installs in the shroud inside.

The drainage structure comprises a water outlet, the water outlet is arranged on the left side and the right side of the shroud ring, the water through holes are formed in the shroud ring, an epoxy resin layer is arranged on the edge of each water through hole and bonded in the shroud ring, an object containing groove is formed in the bottom of the middle of each epoxy resin layer, and a water flushing block is bonded to the top of the shroud ring.

Further, a blade root is integrally formed at the bottom of the blade body and is made in a rectangular shape.

Furthermore, the bottom of the inner part of the object placing groove is inserted with a telescopic rod, and the outer part of the telescopic rod is sleeved with a telescopic spring.

Further, the top and the bottom of the telescopic rod are both bonded with rubber blocks, each rubber block comprises an upper rubber block and a lower rubber block, the upper rubber block is located on the upper portion of the telescopic rod, and the lower rubber block is located on the lower portion of the telescopic rod.

Furthermore, the lower rubber block is bonded with the bottom of the surrounding belt, and the top of the upper rubber block is bonded with a connecting block.

Furthermore, a flow guide rod is inserted into the top of the connecting block and penetrates through the bottom of the water through hole.

Furthermore, the honeycomb duct runs through the limbers and is bonded with two sealing rings.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this corrosion-resistant blade of steam turbine possesses and has drainage structures at shroud internally mounted, can discharge the liquid of hanging in the shroud both sides through a water drum and water conservancy diversion pole cooperation, and then promote advantages such as corrosion resisting property of steam turbine.

2. This corrosion-resistant blade of steam turbine possesses and installs the blade root in blade body bottom and makes things convenient for blade and steam turbine to assemble.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1 according to the present invention;

fig. 3 is an enlarged schematic structural view of B shown in fig. 1 according to the present invention.

In the figure: 1 blade body, 2 blade roots, 3 shroud rings, 4 outlet, 5 epoxy layers, 6 limbers, 7 flushing blocks, 8 storage grooves, 9 rubber blocks, 10 telescopic rods, 11 telescopic springs, 12 connecting blocks, 13 guide rods and 14 sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the corrosion resistant blade of the steam turbine in the embodiment includes a blade body 1 and a drainage structure, wherein a shroud 3 is integrally formed on a top of the blade body 1, and the drainage structure is installed inside the shroud 3.

In this embodiment, the blade root 2 is integrally formed at the bottom of the blade body 1, and the blade root 2 is made in a rectangular shape.

Drainage structures includes outlet 4, and outlet 4 all sets up in the left and right sides of

shroud ring

3, and 3 inside limbers 6 of having seted up of shroud ring are located 6 edges of limbers and have bonded epoxy layer 5 in shroud ring 3, and the bottom at 5 middle parts of epoxy layer has been seted up and has been put

thing groove

8, and 3 tops bonds at shroud ring has towards water piece 7.

Among them, the epoxy resin layer 5 can be used as a raw material of an anticorrosive paint, such as an epoxy glass flake paint, an epoxy coal tar paint, an epoxy zinc-rich paint, and the like.

In this embodiment, it has telescopic link 10 to peg graft in the inside bottom of thing groove 8, and the outside cover of telescopic link 10 is equipped with expanding spring 11, and telescopic link 10 can cooperate expanding spring 11 to stretch out and draw back in a flexible way.

In this embodiment, telescopic link 10 top and bottom all bond and have block rubber 9, and block rubber 9 includes block rubber and lower block rubber, goes up the block rubber and is located telescopic link 10 upper portion, and lower block rubber is located telescopic link 10 lower part.

In this embodiment, the lower rubber block is bonded to the bottom of the shroud ring 3, and the top of the upper rubber block is bonded to the connecting block 12.

In this embodiment, the top of the connecting block 12 is inserted with a diversion rod 13, and the diversion rod 13 penetrates through the bottom of the water through hole 6.

In this embodiment, the draft tube 13 is bonded with two sealing rings 14 penetrating through the water through hole 6.

The working principle of the above embodiment is as follows:

when the blade rotates, the rivers can stay in the edge of shroud ring 3 through inertia this moment, and outlet 4 can be in the limbers 6 with partial liquid diversion this moment, wherein, epoxy 5 can carry out the anticorrosion treatment to 3 inside trickling liquid positions of shroud ring and can touch water conservancy diversion pole 13 when liquid flows to limbers 6 middle part this moment, water conservancy diversion pole 13 is outside through telescopic link 10 and the supplementary water conservancy diversion pole 13 of the flexible displacement of expanding spring 11 shake back liquid outflow shroud ring 3 this moment, wherein, sealing washer 14 can strengthen the seal performance of water conservancy diversion pole 13 when putting the nimble displacement in thing groove 8, and, the washing piece 7 at shroud ring 3 top also can block liquid and flow in the surface of shroud ring 3.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a corrosion-resistant blade of steam turbine, includes blade body (1) and drainage structures, its characterized in that: the top of the blade body (1) is integrally formed with an enclosing belt (3), and the drainage structure is arranged in the enclosing belt (3);

the drainage structure comprises a drainage outlet (4), the drainage outlet (4) is arranged on the left side and the right side of the surrounding belt (3), the water through holes (6) are formed in the surrounding belt (3), the epoxy resin layer (5) is arranged on the edge of the water through holes (6) and is bonded in the surrounding belt (3), the storage groove (8) is formed in the bottom of the middle of the epoxy resin layer (5), and the flushing block (7) is bonded at the top of the surrounding belt (3).

2. A corrosion resistant turbine blade according to claim 1 wherein: the blade is characterized in that a blade root (2) is integrally formed at the bottom of the blade body (1), and the blade root (2) is made in a rectangular shape.

3. A corrosion resistant turbine blade according to claim 1 wherein: the bottom of the inner part of the article placing groove (8) is inserted with a telescopic rod (10), and the outer part of the telescopic rod (10) is sleeved with a telescopic spring (11).

4. A corrosion resistant turbine blade according to claim 3 wherein: the rubber block (9) is bonded to the top and the bottom of the telescopic rod (10), the rubber block (9) comprises an upper rubber block and a lower rubber block, the upper rubber block is located on the upper portion of the telescopic rod (10), and the lower rubber block is located on the lower portion of the telescopic rod (10).

5. The erosion resistant turbine blade of claim 4, wherein: the lower rubber block is bonded with the bottom of the surrounding belt (3), and the top of the upper rubber block is bonded with a connecting block (12).

6. A corrosion resistant blade for a steam turbine according to claim 5 wherein: the top of the connecting block (12) is inserted with a guide rod (13), and the guide rod (13) penetrates through the bottom of the limber hole (6).

7. A corrosion resistant blade for a steam turbine according to claim 6 wherein: the guide rod (13) penetrates through the limber hole (6) and is bonded with two sealing rings (14), and the number of the sealing rings (14) is two.