CN214499287U

CN214499287U - Hydroelectric set runner blade strutting arrangement

Info

Publication number: CN214499287U
Application number: CN202120657426.XU
Authority: CN
Inventors: 冯自然; 黄明; 马明; 杨豆思; 谭滔宇
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-26
Anticipated expiration: 2031-03-31

Abstract

The runner blade supporting device of the hydroelectric generating set comprises a supporting rod, wherein fork plates are connected to two ends of the supporting rod respectively, jackscrews are installed on the fork plates, and the fork plates at two ends of the supporting rod are installed on two adjacent runner blades of the hydraulic turbine. The utility model is used for solve current runner blade fixed stay problem consuming time hard, that the security is not high.

Description

Hydroelectric set runner blade strutting arrangement

Technical Field

The utility model relates to a hydroelectric set runner blade strutting arrangement.

Background

Axial compressor runner formula hydraulic generator runner comprises cylinder cap, runner hub, sluicing awl and blade etc. when the unit shut down inspection or overhaul the period, the staff need go up the work to the blade, and the blade needs be in the totally-closed state this moment to it is fixed firm, guarantees operation personnel safety.

The current practice is that before the unit system is depressurized, the speed control system maintains the blades at the fully closed position through oil pressure, and welds a steel plate (called as a blade stop) with a certain thickness on the runner hub near the root of the water inlet edge of the blades to prevent the blades from moving in the opening direction, so that the blade stop needs to be welded at the corresponding positions of all the blades to ensure that the blades are maintained at the fully closed position after the unit is depressurized, as shown in fig. 1. The blade dog welds firm rear and can removes pressure to speed governing system, and follow-up unit dismantlement work, and overhaul the back at the unit, need cut off the blade dog, and to cutting off the position and polish the processing, the welding of dog and cut off the process of polishing not only consuming time hard, there is the sealed possibility of injury runner hub body and surrounding blade simultaneously yet, in addition, this weldment work needs to go on inside the spiral case of pit, the inside shade and moisture of spiral case, the ground is wet and smooth, it is relatively poor to ventilate, bring a great deal of inconvenience for blade dog weldment work, welding process has higher safe risk.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide hydroelectric set runner blade strutting arrangement for solve current runner blade fixed stay problem consuming time and energy hard, that the security is not high.

In order to solve the above problem, the utility model discloses the technical problem's that solve scheme is: the runner blade supporting device of the hydroelectric generating set comprises a supporting rod, wherein fork plates are connected to two ends of the supporting rod respectively, jackscrews are installed on the fork plates, and the fork plates at two ends of the supporting rod are installed on two adjacent runner blades of the hydraulic turbine.

The bracing piece includes double threaded screw, and double threaded screw both ends screw thread is opposite, has the screwed pipe at double threaded screw both ends threaded connection, and the screwed pipe is articulated with the fork board.

A rubber sheet is fixedly connected in the fork plate.

The utility model has the advantages that:

(1) the supporting device reduces the difficulty and complexity of blade supporting and fixing, can complete work by only two persons in cooperation, is more convenient and faster, and greatly improves the working efficiency of the rotating wheel blade fixing and supporting;

(2) the supporting device is formed once and can be used repeatedly for a plurality of times, and the original blade stop block can be used only once, so that the material cost is saved;

(3) the supporting device can avoid complex processes of processing, welding, cutting, polishing and the like of the original blade stop block and damage to the runner body and accessories in the welding process;

(4) because welding equipment does not need to be prepared and transferred, the safety risk of the operation process is reduced, and meanwhile, the environmental hidden dangers such as smoke dust, sparks and the like generated in a closed environment are avoided.

Drawings

The invention will be further explained with reference to the drawings:

FIG. 1 is a schematic structural view of a conventional runner blade support,

FIG. 2 is a schematic structural view of embodiment 1,

FIG. 3 is a schematic structural view of embodiment 1,

fig. 4 is a schematic structural view of embodiment 2.

Detailed Description

Embodiment 1, as shown in fig. 2 and 3, the supporting device for runner blades of the hydroelectric generating set comprises a supporting rod 4, wherein two ends of the supporting rod 4 are respectively connected with a fork plate 3, a jackscrew 5 is installed on the fork plate 3, and the fork plates 3 at two ends of the supporting rod 4 are installed on two adjacent runner blades 2 of the water turbine. The number of the supporting devices of the runner blades 2 is determined according to the number of the runner blades 2, and all the adjacent two blades 2 are fixed by adopting the method shown in fig. 3, so that all the runner blades 2 form a whole, and the runner blades 2 are fixed at a certain opening degree, which is generally the fully closed position of the blades 2.

Embodiment 2 is a further improvement on embodiment 1, and its structure is shown in fig. 4, where the support rod 4 includes a double-threaded screw 41, the threads of two ends of the double-threaded screw 41 are opposite, and two ends of the double-threaded screw 41 are threadedly connected with screw tubes 42, and the screw tubes 42 are hinged with the fork plate 3. Can conveniently adjust the interval between two fork boards 3 through rotatory double-end screw 41, make it can fix different inclination's blade 2, fork board 3 can be at 60 degrees internal rotations in 4 one ends of bracing piece in addition to make things convenient for fork board 3 to install fixedly.

A rubber sheet 6 is fixedly connected in the fork plate 3. The rubber can play a certain anti-slip effect.

Claims

1. Hydroelectric set runner blade strutting arrangement, its characterized in that: the hydraulic turbine supporting rod comprises a supporting rod (4), wherein two ends of the supporting rod (4) are respectively connected with a fork plate (3), a jackscrew (5) is installed on the fork plate (3), and the fork plates (3) at two ends of the supporting rod (4) are installed on two adjacent runner blades (2) of a hydraulic turbine.

2. The hydroelectric generating set runner blade strutting arrangement of claim 1 characterized in that: the supporting rod (4) comprises a double-threaded screw (41), threads at two ends of the double-threaded screw (41) are opposite, threaded pipes (42) are connected at two ends of the double-threaded screw (41) in a threaded mode, and the threaded pipes (42) are hinged to the fork plate (3).

3. The runner blade supporting device of a hydroelectric generating set according to claim 1 or 2, wherein: a rubber sheet (6) is fixedly connected in the fork plate (3).