Concrete pouring method for water turbine runner chamber
A pouring method and runner chamber technology, applied in hydroelectric power generation, water conservancy projects, hydropower stations, etc., can solve the problems of difficult and difficult implementation of old water turbine units, to ensure safety and stability, reliable use, The effect of preventing partial voids
Active Publication Date: 2020-10-09
CHONGQING WATER TURBINE WORKS
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Problems solved by technology
[0002] At present, under the national policy of increasing efficiency and expanding capacity of small and medium-sized hydropower stations, a large number of axial-flow propeller turbine units in the 1980s need to be transformed. Due to the limitations of production technology in the 1980s, there are still some problems in the transformation of old water turbines. Larger difficulties, especially in the transformation of low factory buildings, it is difficult to implement
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Embodiment 1
[0014] Embodiment 1: A concrete pouring method for the runner chamber of a hydraulic turbine, the method comprising the following steps: 1) drilling the grouting pipe 1; 2) pre-burying the grouting pipe 1 in the pit of the runner chamber 2; 3) Concrete pouring is performed through the grouting pipe 1; 4) The pouring is completed.
[0015] Wherein, in order to facilitate layer-by-layer pouring, in the step 1), a plurality of grouting holes 3 are made on the grouting pipe 1 by a punching machine, and adjacent grouting holes 3 are formed on the same grouting pipe 1 The distance between them is greater than 50cm, and the diameter of each pulp outlet hole 3 is not less than 40mm.
[0016] In order to facilitate pouring, in the step 2), the grouting pipe 1 is vertically inserted into the pit of the runner chamber 2, and is arranged adjacent to the inner wall of the pit of the runner chamber 2.
[0017] In order to make pouring more uniform and prevent gaps, at least 8 grouting pipe...
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The invention discloses a water turbine runner chamber concrete pouring method. The water turbine runner chamber concrete pouring method comprises the following steps of: (1) perforating a grout pipe;(2) pre-embedding the grout pipe in a runner chamber pit; (3) pouring concrete through the grout pipe; and (4) completing pouring. The water turbine runner chamber concrete pouring method has the advantages of fastness, convenience, low cost and reliability in use, can be used for pouring concrete into the runner chamber in a limited space, realizes uniform pouring, prevents a local gap from occurring, can also enable the outer wall of the runner chamber to be wrapped and ensures the safety and stability of machine set operation.
Description
technical field [0001] The invention relates to a pouring method for a water turbine runner chamber, in particular to a concrete pouring method for a water turbine runner chamber. Background technique [0002] At present, under the national policy of increasing efficiency and expanding capacity of small and medium-sized hydropower stations, a large number of axial-flow propeller turbine units in the 1980s need to be transformed. Due to the limitations of production technology in the 1980s, there are still some problems in the transformation of old water turbines. Larger difficulties, especially in the transformation of low factory buildings, are even more difficult to implement. [0003] The runner chamber of the axial flow turbine is the installation center of the hydroelectric generating unit. Since the runner chamber needs to be replaced during the renovation process, the runner chamber must be poured in a limited space. During pouring, not only It must be ensured that t...
Claims
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IPC IPC(8): E02B9/00E02D15/00
CPCE02B9/00E02D15/00Y02E10/20Y02P70/50
Inventor 秦波
Owner CHONGQING WATER TURBINE WORKS