CN219412767U

CN219412767U - Integral residual pressure recovery generator set with rear movable guide vanes

Info

Publication number: CN219412767U
Application number: CN202320785739.2U
Authority: CN
Inventors: 刘贺; 滕忠雪; 张晓�
Original assignee: Beijing Anhe Energy Technology Co ltd
Current assignee: Beijing Anhe Energy Technology Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-07-25
Anticipated expiration: 2033-04-11

Abstract

The utility model provides a surplus pressure recovery generating set of rear-mounted movable guide vane of whole dress area, includes casing, movable guide vane, runner and main shaft, generating set group is on the base, the casing in install movable guide vane, movable guide vane links to each other with the guide vane adjustment mechanism who installs in casing outer tail water one side, the runner is equipped with to the concentric in the movable guide vane export, the main shaft is equipped with in the center pin hole of runner, main shaft one end passes casing and bearing box in proper order and links to each other with the motor shaft of generator through the shaft coupling, the bearing box links to each other with the casing. The utility model has compact structure, is specially required for residual pressure power generation application, solves the problems of complex structure, poor centering precision, inconvenient disassembly and assembly of the machine seal, no movable guide vane of the common reversing pump, low efficiency and reliability and the like of the conventional hydroelectric generating set, has simple, efficient and stable structure, and has good economic and social benefits.

Description

Integral residual pressure recovery generator set with rear movable guide vanes

Technical Field

The utility model relates to a residual pressure generator set, in particular to a residual pressure recovery generator set with rear movable guide vanes.

Background

The pressure reduction process links commonly exist in the water delivery pipe networks of energy, chemical industry, municipal administration and the like, and the waste residual pressure in the pressure reduction process is used for generating electricity. The residual pressure generator set is a miniature unit commonly, and needs to adapt to the requirement of the process flow on water quantity regulation, the conventional hydroelectric generator set is special energy conversion equipment, but has a complex structure, the movable guide vane regulating structure is usually positioned between the shell and the bearing bracket, the bearing box and the shell are arranged in a split mode, the centering precision is difficult to ensure, the machine seal is difficult to disassemble and assemble due to narrow space, the shaft runout amplitude exceeds the standard due to insufficient centering precision, and the service life of the bearing and the mechanical seal is unfavorable. The fixed guide vane of the large hydroelectric generating set is mainly used for bearing, the shell of the miniature hydroelectric generating set has enough strength and rigidity, the fixed guide vane is arranged to cause complex production process, and the integral casting is inconvenient. The pump is reversed to be hydraulically transparent, so that the valve is matched with the flow regulation due to the lack of movable guide vanes, the operation is complex, and the efficiency and the reliability are low. In order to meet the requirements of the residual pressure recovery power generation application, development of a residual pressure recovery power generation unit with a simple structure, high efficiency and stability is needed.

Disclosure of Invention

Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide the residual pressure recovery generator set with the rear movable guide vanes, which can effectively solve the problems of complex structure, poor centering precision, inconvenient machine seal disassembly and assembly of the traditional generator set, no movable guide vanes of a common reversing pump, low efficiency and reliability and the like.

In order to achieve the purpose, the technical scheme is that the residual pressure recovery generator set with the rear movable guide vanes comprises a shell, the movable guide vanes, a rotating wheel and a main shaft, wherein the generator set is assembled on a base, the movable guide vanes are arranged in the shell, the movable guide vanes are connected with a guide vane adjusting mechanism arranged on one side of tail water outside the shell, the rotating wheel is concentrically arranged in an outlet of the movable guide vanes, the main shaft is arranged in a central shaft hole of the rotating wheel, one end of the main shaft sequentially penetrates through the shell and a bearing box and is connected with a motor shaft of the generator through a coupler, and the bearing box is connected with the shell.

The utility model has compact structure, is specially required for residual pressure power generation application, solves the problems of complex structure, poor centering precision, inconvenient disassembly and assembly of the machine seal, no movable guide vane of the common reversing pump, low efficiency and reliability and the like of the conventional hydroelectric generating set, has simple, efficient and stable structure, and has good economic and social benefits.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic view of the vane adjustment mechanism of the present utility model.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings and the detailed description.

The utility model provides a surplus pressure recovery generating set of rear-mounted movable guide vane of whole dress, includes casing 1, movable guide vane 2, runner 3 and main shaft 9, the generating set is on base 10, casing 1 in install movable guide vane 2, movable guide vane 2 links to each other with the guide vane adjustment mechanism 8 of dress in the outer tail water one side of casing 1, be equipped with runner 3 in the concentric in the export of movable guide vane 2, be equipped with main shaft 9 in the central shaft hole of runner 3, main shaft 9 one end passes casing 1 and bearing box 5 in proper order and links to each other with generator 7's motor shaft through shaft coupling 6, bearing box 5 is in the same place with casing 1 is fixed.

In order to ensure better implementation effect, the joint of the main shaft 9 and the shell 1 is provided with a mechanical seal 4.

The guide vane adjusting mechanism 8 comprises a speed reducer 8-1, a rocker arm 8-2, a push-pull rod 8-3, a guide vane rotating arm 8-4 and a connecting plate 8-5, wherein an output shaft of the speed reducer 8-1 is connected with one end of the rocker arm 8-2, the other end of the rocker arm 8-2 is hinged with one end of the push-pull rod 8-3, the other end of the push-pull rod 8-3 is hinged with one end of a long lug 8-6, the other end of the long lug 8-6 is connected with one movable guide vane 2, and the other movable guide vanes 2 are connected with the long lug 8-6 through the guide vane rotating arm 8-4 and the connecting plate 8-5 to form a transmission structure. The speed reducer 8-1 drives the rocker arm 8-2 to rotate around the center of an output shaft of the speed reducer 8-1, the rotating torque is transmitted to the long lug 8-6 through the push-pull rod 8-3, and the guide vane rocker arm 8-4 is driven to rotate through the connecting plate 8-5 when the long lug 8-6 rotates, so that the synchronous opening of the movable guide vane 2 is realized.

The guide vane adjusting mechanism 8 is arranged on one side of the tail water of the shell in a rear-mounted mode, and a reserved space is reserved for direct connection between the bearing box 5 and the shell 1 and sealing, dismounting and mounting of the mechanical seal 4.

The generator 7 is an asynchronous motor, a synchronous generator, a permanent magnet generator or a doubly-fed generator, and the rotating wheel 3 is a mixed flow rotating wheel, an axial flow rotating wheel or a water pump turbine rotating wheel. When the asynchronous motor operates in a generator state, a special excitation regulation and synchronization module is not needed, the protection level is high, the outdoor installation requirement of a factory-free plant is met, the system is simple, and the grid connection operation is easy.

The bearing box 5 is internally provided with a thrust bearing and a radial bearing in sequence.

When the utility model is specifically used, water flows in from the inlet of the shell 1 and enters the movable guide vane 2 along the circumferential direction, the opening of the movable guide vane 2 controls the overflow and the water circulation through the guide vane regulating mechanism 8, the water flows from the outlet of the movable guide vane 2 into the rotating wheel 3 to do work and drive the main shaft 9 to rotate, the water flow pressure is reduced after the work is done, finally the water is discharged from the outlet of the shell 1, the rotating wheel 3 outputs shaft power through the main shaft 9 and drives the generator 7 to produce electric energy through the coupler 6, the bearing box 5 is directly connected with the shell 1, the main shaft 9 and the shell 1 have high centering precision, small unit vibration, and the mechanical seal 4 has abundant installation space and convenient disassembly and assembly.

The utility model has good performance and good effect through engineering application, and specific test data are as follows:

the available pressure of the circulating water outlet of a municipal tap water delivery project is about 0.3MPa, and the annual average flow is 700 m ³ And/h, by adopting the residual pressure recovery generator set with the rear movable guide vanes, the surplus pressure is recovered to generate electricity, and the average power generation is about 48kW. The unit adopts a horizontal shaft arrangement mode, a mixed flow type rotating wheel is selected, the generator type is an asynchronous generator, a guide vane adjusting structure is arranged on one side of tail water of a shell, a bearing box is directly connected with the shell, the mechanical seal is convenient to install, the waste of water resources is effectively avoided, and the water flow is 200-800 m ³ Range of/hThe internal fluctuation can be better operated, and the unit is convenient to adjust, strong in adaptability and remarkable in energy-saving benefit.

The utility model has compact structure, convenient installation, simple structure, high efficiency and stability, and has the following advantages compared with the prior art:

1. the guide vane adjusting structure is placed on one side of the tail water of the shell, so that the direct connection between the bearing box and the shell is realized, the centering precision is high, the radial runout of the main shaft is small, the mechanical seal is abundant in disassembly and assembly space and long in service life, water resources are prevented from being wasted due to leakage, the mechanical performance is reliable, the protection grade of an asynchronous generator is high, the outdoor use requirement is met, the arrangement is flexible, and the civil investment of a factory building and the like is reduced;

2. the shell has no fixed guide vane, so that the processing difficulty is reduced, the production cost is reduced, the hydraulic loss is low, the unit efficiency is high, the flow can be regulated in a wider range by adopting the movable guide vane, the adaptability is strong, the unit has no independent auxiliary machine mechanism, the reliability is high, the carbon emission reduction is realized, and good social and economic benefits are realized.

Claims

1. The utility model provides a surplus pressure recovery generating set of rear-mounted movable guide vane of whole dress area, includes casing (1), movable guide vane (2), runner (3), and main shaft (9), generating set group is on base (10), its characterized in that, casing (1) in install movable guide vane (2), movable guide vane (2) link to each other with guide vane adjustment mechanism (8) of dress tail water one side outside casing (1), be equipped with runner (3) in the export of movable guide vane (2) with one heart, be equipped with main shaft (9) in the center pin hole of runner (3), main shaft (9) one end is passed casing (1) and bearing box (5) in proper order and is linked to each other with the motor shaft of generator (7) through shaft coupling (6), bearing box (5) are fixed together with casing (1).

2. The residual pressure recovery generator set with the rear movable guide vanes integrally installed according to claim 1, wherein a mechanical seal (4) is installed at the joint of the main shaft (9) and the shell (1).

3. The residual pressure recovery generator set with the rear movable guide vanes, according to claim 1, is characterized in that the guide vane adjusting mechanism (8) comprises a speed reducer (8-1), a rocker arm (8-2), a push-pull rod (8-3), a guide vane rotating arm (8-4) and a connecting plate (8-5), an output shaft of the speed reducer (8-1) is connected with one end of the rocker arm (8-2), the other end of the rocker arm (8-2) is hinged with one end of the push-pull rod (8-3), the other end of the push-pull rod (8-3) is hinged with one end of a long lug (8-6), the other end of the long lug (8-6) is connected with one of the movable guide vanes (2), and the other movable guide vanes (2) are connected with the long lug (8-6) through the guide vane rotating arm (8-4) and the connecting plate (8-5) to form a transmission structure.

4. The residual pressure recovery generator set with the rear movable guide vanes integrally installed according to claim 1, wherein the generator (7) is an asynchronous motor, a synchronous generator, a permanent magnet generator or a doubly-fed generator, and the rotating wheel (3) is a mixed-flow rotating wheel, an axial-flow rotating wheel or a water pump turbine rotating wheel.

5. The residual pressure recovery generator set with the rear movable guide vanes integrally installed according to claim 1, wherein a thrust bearing and a radial bearing are sequentially installed in the bearing box (5).