阅读说明：本技术 一种新型上冠泵板结构 (Novel crown pump plate structure ) 是由 孟芳 张志斌 于 2020-12-16 设计创作，主要内容包括：本发明属于水轮机机械设备技术领域,提供了一种新型上冠泵板结构,包括上冠,上冠的内部设有圆筒,上冠和圆筒之间设有筋板,筋板和圆筒的上部设有可拆卸的上平板；本发明便于拆卸,机加工后只需拆下上平板,即可清除转轮上冠内腔铁屑；做静平衡试验时,只需拆下上平板,将配重块放入相应位置即可；结构简单易于操作,提高了工作效率；避免了焊缝处不美观且极易开裂的缺陷；本发明大大减少了焊接过程中对转轮的影响,增加了转轮的刚度,既易于拆卸,又方便清理,使配平衡过程更加简单便捷,重复性好。(The invention 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 at the upper parts of the rib plate and the cylinder; the scrap iron removing device is convenient to detach, and scrap iron in the inner cavity of the upper crown of the rotating wheel can be removed only by detaching 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 invention greatly reduces the influence on the rotating wheel in the welding process, increases the rigidity of the rotating wheel, is easy to disassemble and convenient to clean, and ensures that the balancing process is simpler and more convenient and has good repeatability.)

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.

Technical Field

The invention relates to the technical field of hydraulic turbine mechanical equipment, in particular 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.

Disclosure of Invention

The invention provides a novel upper crown pump plate structure which comprises an upper crown, wherein a cylinder is arranged in the upper crown, a plurality of rib plates are arranged between the upper crown and the cylinder, and the upper parts of the rib plates and the cylinder are provided with detachable upper flat plates, namely the upper flat plates are detachably connected with the rib plates, and the upper flat plates are also detachably connected with the cylinder, so that the upper flat plates are convenient to detach and install.

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.

Aiming at the problems of difficult cleaning and counterweight of the crown of the original mixed-flow runner, the invention designs a novel crown pump plate structure, wherein a top flat plate is connected with a rib plate and a cylinder welded on the crown by screws, and scrap iron in the inner cavity of the crown of the runner can be removed only by detaching the top flat plate after machining; 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 invention 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 view of the present invention;

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

1. the balance weight type lead block comprises an upper crown 2, a rib plate 3, an upper flat plate 4, a screw 5, a cylinder 6, a balance weight cavity 7 and a balance weight lead block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the installation methods and technical terms mentioned in the present invention are technical terms that are already 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 invention provides a novel crown pump plate structure, which comprises a crown 1 (also called a crown pump plate), wherein a cylinder 5 is arranged in 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 invention avoids the fussy working procedure, only needs to disassemble the upper flat plate 3 and put the counterweight device into the corresponding position during balancing, is very simple and convenient, and improves the working 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.

Aiming at the problems of difficult cleaning and counterweight of the crown of the original mixed-flow runner, the invention designs a novel crown pump plate structure, wherein a screw 4 is used for connecting an upper flat plate 3 with a rib plate 2 and a cylinder 5 welded on the crown 1, and scrap iron in the inner cavity of the crown 1 of the runner can be removed only by detaching the upper flat plate 3 after machining; 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 invention 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 description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.