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Classification：Hydropower station valve
Trade names：
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| Special-purpose ball valve of the water and electricity |
| Type of the products: GFQP9k47F/H |
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The products quote the standard:
1, technology is made and pressed GB12237 Regulation
2, examine and test pressing JB/T9092 Regulation
3, the size of flange is pressed JB79 Regulation
4, the length of structure is pressed Regulation of GB12221 |
Product structure characteristic:
It move liquid water and electricity mainly it suitable for medium water not containing silt in the valves the balls,temperature- at the time of power station of 280 degrees Centigrades last device regarding water pipeline as, can only all open , close completely , can't regulate using , the advantage of hindering small , opening and close flexibly , safely and reliably , easy to operate etc. flows.
Adopt the piston stagnant water of one pair of sealed rings to surround the structure, divide the upper reaches and overhaul and seal sealing with the downstream work. Visit sealed position set up sealed ring , promote the piston to stop the ring through the hydraulic pressure system instead of compressing tightly from head to foot in annular valve core, realize sealing. While closing the ball valve normally, the downstream work is sealed and closed , smooth stagnant water, while overhauling or changing the low reaches and working and sealing, overhaul and seal and is closed in the upper reaches, and is locked the device to lock by machinery .
The operating organization, for the operating organization of the hydraulic pressure (straighten the jar relay device), the straight jar relay device is a piston --Set aside fork organization, set up manual to lock device , main valve position signal instruct device and manual to lock spindle drop into or allocate the signal not to instruct the device. Manual to lock device can keep out relay device most heavy to operate pressure , prevent valve from miss movement.
On ball valve , on the sealed ring of low reaches , have set up the position journey switch separately, through circuit connect to in accuse of it after room , can understand there aren't ring not sealed accurate, in order to operate the switch valve of the relay device accurately.
Liquid move ball valve (main valve ) the upper reaches short to in charge of and stock ink pipeline welding in front of valve, connect with snail's shell of hydraulic turbine through flexible festival in the low reaches , in order to install and overhaul the liquid and move the ball valve (main valve), flexible festival adjustment.
Liquid move ball valve (main valve ) coherent to produce pipeline by setting up , purpose its is it open main valve make the valve visit the pressure balancing of the end from head to foot to lie in, reduce the main valve and open and close the moment . The by-pass valve is --The liquid moves the ball valve, set up in front of the liquid moves the ball valve- manual valve, the open liquid moved the ball valve by using for overhauling.
Set up the wedge type floodgate valve of DN80 on the flexible festival top , when the pressure steel tube serves as water to the downstream hydraulic turbine , this valve is totally opened, get rid of the air above water. One degree of departments set up DN80mm in the ball valve bottom and flexible festival, the manual floodgate valve of PN4.0MPa, using and fully getting rid of the valve filth and snail in the body cavity while overhauling the hydraulic turbine and waiting in the shell and water accumulation .
Have stocked the oil mouth place and set up two choke valves separately in two switches of the relay device , make opening and closing time of the valve can be regulated according to customer's enquiry.
Comments: The external dimension of this product and concrete technical parameter, design concretly according to different demands , the concrete data can contact engineering department of our factory . |
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