Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit
A generator set and draft tube technology, which is applied in the directions of hydropower, engine components, machines/engines, etc., can solve the problems of increasing the excavation cost of civil works, etc., and achieve the effects of simple structure, convenient installation and flexible operation.
Active Publication Date: 2012-02-29
HARBIN ELECTRIC MASCH CO LTD
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Problems solved by technology
The usual way of pipeline drainage not only requires the installation of drainage pipes with large diameters and large control valves, but also must leave enough corridors for inspection and operation of control valves for maintenance, which will inevitably increase the construction cost. excavation cost
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Embodiment Construction
[0007] Such as figure 1 The present invention shown is a draft tube disc valve for overhauling large and medium-sized hydro-generator sets. The valve body sealing seat, valve body, valve shaft, lower support, upper support, servomotor support and servomotor, and lower bearing The sealing support, the upper bearing sealing support and the locking device together constitute the draft tube disc valve. The valve body sealing seat 1, the lower support 4 and the upper support 5 are respectively installed and poured in the supporting concrete seat, such as figure 2 As shown, the valve body 2 and the valve body sealing seat 1 have a conical sealing structure, the valve body 2 and the valve shaft 3 are connected by a threaded sleeve, and the lower bearing seal bracket 8 is fixed to the lower support 4 by bolts. Together, the upper bearing seal bracket 9 is fixed with the upper support 5 by bolts, the servomotor bracket 6 is installed and fixed on the upper support 5, the valve shaft 3 a...
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The invention relates to a draft tube disk-shaped valve for overhauling a large and medium-sized water turbine generator unit. A valve body sealing seat, a lower support seat and an upper support seat are respectively cast in a concrete seat of a support; a valve body and the valve body sealing seat are in conical sealing pair structures; a lower bearing sealing bracket is fixedly connected with the lower support seat through a bolt bar; an upper bearing sealing bracket is fixedly connected with the upper support seat through a bolt bar; a servomotor bracket is fixedly arranged on the upper support seat; the upper part of the servomotor bracket is connected with a servomotor; a servomotor piston rod is connected with the valve body of the draft tube disk-shaped valve through a valve shaft; a conical contact surface between the valve body and the valve body sealing seat is a metal-to-metal matched surface; and a locking device is arranged at the upper part of the servomotor. The draft tube disk-shaped valve disclosed by the invention is maintenance-free and is free from a special overhaul operation corridor so as to greatly save the cost of civil engineering; and the draft tube disk-shaped valve can be operated by using a movable oil source.
Description
Technical field: [0001] The invention relates to a draft tube disc valve for overhauling large and medium-sized hydraulic generator sets. Background technique [0002] Due to the need for regular maintenance of large and medium-sized hydroelectric generator sets, the accumulated water inside must be drained during the maintenance period. The usual way of pipeline drainage requires not only the installation of large-diameter drainage pipes and larger control valves, but also sufficient corridors for maintenance and operation of the control valves for maintenance. This is bound to increase the civil work The cost of excavation. Summary of the invention [0003] The purpose of the present invention is to provide a draft tube disc valve for maintenance of large and medium-sized hydro-generator units, that is, the draft tube disc valve is used to ensure that the water in the draft tube is discharged to the collection well during the maintenance of the unit, and normal operation When ...
Claims
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IPC IPC(8): F16K1/00F16K31/12F03B11/00
CPCY02E10/20
Inventor 高欣
Owner HARBIN ELECTRIC MASCH CO LTD