Method for preventing hydroelectric generating set from being lifted
A technology for generator sets and water turbines, which is applied to hydroelectric power generation, engine components, machines/engines, etc., and can solve problems such as damage to thrust bearings and structural components of hydroelectric generators
Active Publication Date: 2011-10-12
POWERCHINA XIBEI ENG
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Some of the power stations that have been built now, such as: Gezhouba Hydropower Station, Hunan Province Shuifumiao Hydropower Station, Anren Dashi Hydropower Station, Mayang Majingao Hydropower Station, Hongyan Hydropower Station and Syria Dishlin Hydropower Station designed by Northwest Survey and Design Research Institute, etc., due to hydroelectric power generation When the unit is lifted, the normal operation of the power station encounters obstacles, and in severe cases, the thrust bearing and structural components of the hydro-generator will be damaged
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] Such as figure 1 and figure 2 As shown, a pressure relief valve 10 is arranged at the turbine runner outlet 3 of the water turbine runner 1, and the pressure relief valve 10 is connected to the water diversion branch pipe 9 and the water diversion ring pipe 5 evenly distributed along the circumference of the garden, and two or more water diversion branch pipes 9 are distributed. Radially distributed inside the water diversion ring pipe 5, one end of the water diversion branch pipe 9 communicates with the outlet 3 of the water turbine runner, and the other end is in sealing communication with the water diversion ring pipe 5, when the pressure at the outlet 3 of the water turbine runner makes the spring 7 of the pressure reducing valve 10 compress the valve plug 6. When automatic opening, the drainage and pressure relief reduce P2, so that P2-P1≤G, at this time, the water at the outlet 3 of the turbine runner is introduced into the water collection well 11 through the dr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for preventing a hydroelectric generating set from being lifted, belonging to hydraulic machinery engineering. In the method, a pressure reducing valve is arranged at the outlet of a rotating wheel of a water turbine; and when guide blades of the water turbine are quickly closed and pressure P2 increases to a definite value, the pressure reducing valve is opened for draining water and releasing pressure to reduce the P2 and enable the difference of P2 and P1 to be less than or equal to G, thereby realizing the purpose of preventing the hydroelectric generating set from being lifted, and in the formula, the P1 is downward axial hydraulic thrust, the P2 is upward axial hydraulic thrust, and the G is the weight of the rotating part of the hydroelectric generating set. The method which can prevent the hydroelectric generating set from being lifted and has simple structure, safety and reliability is provided.
Description
technical field [0001] The invention belongs to hydraulic mechanical engineering, in particular to a method for preventing lifting of a hydraulic generator set. Background technique [0002] Some of the power stations that have been built now, such as: Gezhouba Hydropower Station, Hunan Province Shuifumiao Hydropower Station, Anren Dashi Hydropower Station, Mayang Majingao Hydropower Station, Hongyan Hydropower Station and Syria Dishlin Hydropower Station designed by Northwest Survey and Design Research Institute, etc., due to hydroelectric power generation The lifting of the unit makes the normal operation of the power station encounter obstacles, and in severe cases, the thrust bearing and structural components of the hydro-generator will be damaged. [0003] The lifting phenomenon of the hydro-generator unit generally mainly occurs in the following three situations: [0004] 1) After the load shedding of the hydro-generator set, the water-guiding vane of the hydro-turbin...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F03B11/00
CPCY02E10/20
Inventor 王耀洲
Owner POWERCHINA XIBEI ENG