CN214366501U

CN214366501U - Novel crown pump plate structure

Info

Publication number: CN214366501U
Application number: CN202023042682.2U
Authority: CN
Inventors: 孟芳; 张志斌
Original assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Current assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-10-08
Anticipated expiration: 2030-12-16

Abstract

The utility model belongs to the technical field of hydraulic turbine mechanical equipment, and provides a novel crown pump plate structure, which comprises a crown, wherein a cylinder is arranged in the crown, a rib plate is arranged between the crown and the cylinder, and a detachable upper flat plate is arranged on the upper parts of the rib plate and the cylinder; the utility model is convenient to disassemble, and scrap iron in the inner cavity of the upper crown of the runner can be removed only by disassembling the upper flat plate after machining; when a static balance test is carried out, only the upper flat plate needs to be dismounted, and the balancing weight is placed in a corresponding position; the structure is simple and easy to operate, and the working efficiency is improved; the defects that the welding seam is not attractive and is easy to crack are avoided; the utility model discloses to the influence of runner in the welding process that has significantly reduced, increased the rigidity of runner, both easily dismantled, convenient clearance again makes the equilibrium process of joining in marriage simple more convenient, good reproducibility.

Description

Novel crown pump plate structure

Technical Field

The utility model relates to a hydraulic turbine mechanical equipment technical field especially relates to a novel crown pump plate structure.

Background

The hydraulic turbine is a power machine which converts the energy of water flow into rotary mechanical energy and belongs to the turbine machinery in fluid machinery; the water flow pushes the rotating wheel to rotate, the main shaft drives the generator to convert mechanical energy into electric energy, the water turbine is one of important hydroelectric equipment, is an indispensable component part in the hydroelectric power generation industry, is important equipment for fully utilizing clean renewable energy to realize energy conservation and emission reduction and reduce environmental pollution, and the technical development of the equipment is adapted to the development scale of the hydroelectric power industry in China. Under the strong pulling of the electric power demand in China, the water turbine manufacturing industry in China enters a rapid development period, the economic scale and the technical level of the water turbine manufacturing industry in China are both obviously improved, and the water turbine manufacturing technology in China reaches the world advanced level.

The mixed-flow water turbine has high efficiency and wide water head range, is a water turbine type widely adopted by various countries, and the mixed-flow rotating wheel adopts a cast-weld structure along with the continuous development of the rotating wheel structure: the upper crown, the lower ring and the blades are cast separately and then assembled and welded into a whole; the original structure has the following defects: chippings generated in the machining process of the upper crown continuously fall into the pump plate, and the closed space is difficult to clean; in the static balance test process of the rotating wheel, the upper crown pump plate needs to be cut, and the cutting part is sealed and firmly welded after the counterweight lead block is additionally welded; the structure has the advantages of complex working procedures, high repeatability, low efficiency, unattractive welding seam and easy cracking.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel crown pump plate structure, including the crown, the inside of crown is equipped with the drum, be equipped with a plurality of gussets between crown and the drum, the upper portion of gusset and drum is equipped with the detachable upper flat plate, and the upper flat plate is connected for dismantling with the gusset promptly, the upper flat plate also is connected for dismantling with the drum, and convenient upper flat plate is dismantled and is installed.

The rib plates are connected with the upper flat plate through screws, and the cylinder is connected with the upper flat plate through screws.

The number of the screws between each rib plate and the upper flat plate is 4.

And a counterweight cavity is formed among the upper crown, the rib plate, the upper flat plate and the cylinder, and a counterweight device is arranged in the counterweight cavity.

The counterweight device is a counterweight lead block.

And the counterweight lead block is welded and fixed with the upper crown.

The upper crown and the cylinder are fixed by welding.

The utility model designs a novel crown pump plate structure aiming at the problems of difficult crown processing and cleaning and difficult counterweight of the original mixed flow runner, utilizes screws to connect the upper flat plate with the rib plate and the cylinder welded on the crown, and only needs to detach the upper flat plate after machining, thus the scrap iron in the inner cavity of the crown of the runner can be removed; when balancing, only the upper flat plate needs to be detached, and the balancing weight is placed in a corresponding position; finally, after the socket head cap screws are cleaned, the upper flat plate is combined on the rotating wheel, and the anaerobic thread locking sealant is coated to finish the installation; the utility model has the advantages and positive effects that: the influence on the rotating wheel in the welding process is greatly reduced, the rigidity of the rotating wheel is increased, the rotating wheel is easy to disassemble and convenient to clean, the balancing process is simpler and more convenient, and the repeatability is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic top view of the present invention;

1. crown 2, rib plate 3, upper flat plate 4, screw 5 and cylinder

6. A counterweight cavity 7 and a counterweight lead block.

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 efforts belong to the protection scope of the present invention.

It should be noted that the installation manners and technical terms mentioned in the present invention are technical terms that have been clearly known in the technical field, and thus, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

The first embodiment is as follows:

the utility model provides a novel crown pump plate structure, which comprises a crown 1 (also called a crown pump plate), wherein a cylinder 5 is arranged inside the crown 1, a plurality of rib plates 2 are arranged between the crown 1 and the cylinder 5, and preferably, the crown 1 and the cylinder 5 are fixed by welding; the rib plates 2 are uniformly arranged along the center of the crown 1; the upper parts of the rib plates 2 and the cylinder 5 are provided with detachable upper flat plates 3,

the upper flat plate 3 is detachably connected with the rib plate 2, and the upper flat plate 3 is detachably connected with the cylinder 5; the upper end surface of the upper crown 1 is above the upper end surface of the upper flat plate 3, namely the sum of the height of the rib plate 2 and the height of the upper flat plate 3 is less than the height of the two ends of the upper crown 1; the detachable connection mode is adopted, so that the scraps falling into the pump plate of the crown 1 in the machining process are convenient to clean; the structure is simple and easy to operate, the working efficiency is improved, and the defects that the welding seam is not attractive and is easy to crack are overcome.

As a preferable scheme, the rib plate 2 and the cylinder 5 are connected with the upper flat plate 3 through screws 4; the connection mode is screw connection, so that the cost is low, the maintenance is convenient, and the operation is easy; more preferably, in order to improve the stability and rigidity of the connection, four screws are arranged between each rib plate 2 and the upper flat plate 3; but not limited to, 4 screws, the specific number of which is selected according to the specific structure of the rib 2 and the upper plate 3.

Example two:

in the implementation, a counterweight cavity 6 is formed among the upper crown 1, the rib plate 2, the cylinder 5 and the upper flat plate 3, and a counterweight device is arranged in the counterweight cavity 6; the balance weight cavity 6 and the balance weight device are matched to balance the equipment, and due to the adoption of the design of detachable connection, the upper crown 1 is prevented from being cut in the balance matching process, and the cut part is sealed and firmly welded after the balance weight device is additionally welded; the utility model discloses avoided this kind of loaded down with trivial details process, when joining in marriage the balance, only need pull down the upper flat plate 3, with the counter weight device put into corresponding position can, ten minutes simple and convenient has improved work efficiency.

Preferably, in order to reduce the use cost and improve the universality, the counterweight device adopts a counterweight lead block 7, and the counterweight lead block 7 is welded and fixed with the upper crown 1.

The utility model designs a novel crown pump plate structure aiming at the problems of difficult crown processing and cleaning and difficult counterweight of the original mixed flow runner, utilizes the screw 4 to connect the upper flat plate 3 with the rib plate 2 and the cylinder 5 welded on the crown 1, and only needs to detach the upper flat plate 3 after machining, thus the scrap iron in the inner cavity of the crown 1 of the runner can be cleaned; when balancing, only the upper flat plate 3 needs to be detached, and the counterweight device is placed at a corresponding position; and finally, after the socket head cap screws 4 are cleaned, the upper flat plate 3 is closed on the rotating wheel, and the anaerobic thread locking sealant is coated to finish the installation. The utility model has the advantages and positive effects that: the influence on the rotating wheel in the welding process is greatly reduced, the rigidity of the rotating wheel is increased, the rotating wheel is easy to disassemble and convenient to clean, the balancing process is simpler and more convenient, and the repeatability is good.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims

1. The utility model provides a novel crown pump plate structure, includes crown (1), its characterized in that, the inside of crown (1) is equipped with drum (5), be equipped with gusset (2) between crown (1) and drum (5), the upper portion of gusset (2) and drum (5) is equipped with detachable upper flat plate (3).

2. The novel crown pump plate structure according to claim 1, wherein the rib plates (2) are connected with the flat plate (3) through screws (4), and the cylinder (5) is connected with the flat plate (3) through screws (4).

3. The novel crown pump plate structure according to claim 2, wherein the number of the screws between each rib plate (2) and the upper flat plate (3) is four.

4. The novel crown pump plate structure according to claim 1, wherein a counterweight cavity (6) is formed among the crown (1), the rib plate (2), the upper flat plate (3) and the cylinder (5), and a counterweight device is arranged in the counterweight cavity (6).

5. A new crown pump plate structure according to claim 4, characterized in that said counterweight means are counterweight lead blocks (7).

6. The novel crown pump plate structure of claim 5, wherein the counterweight lead block (7) is welded and fixed with the crown (1).

7. A new crown pump plate structure according to any one of claims 1 to 6, characterized in that said crown (1) is fixed to the cylinder (5) by welding.