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Double-layer floating ball type vacuum breaking valve

A technology of vacuum breaker valve and floating ball type, which is applied in the direction of valve details, multi-way valves, valve devices, etc. It can solve the problems of floating ball deformation, no water hammer resistance, no secondary water return sealing device, etc., and achieve safe operation , long service life and simple structure

Inactive Publication Date: 2012-09-19
HARBIN SHENGDI ELECTRIC POWER EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The floating ball vacuum breaker valve currently used has no water hammer resistance function. The huge water hammer energy often deforms the floating ball and causes water leakage; there is no secondary water return sealing device. If the floating ball deforms and causes water leakage, there is no secondary seal. The water device seals the leaking water

Method used

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  • Double-layer floating ball type vacuum breaking valve
  • Double-layer floating ball type vacuum breaking valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] After putting 4 to 8 upper sealing floats (1) into the upper float basket (8), then fix the upper ends of 4 to 8 upper float baskets (8) to the upper air inlet holes on the upper orifice plate (5) correspondingly (4) Below the position, use the upper hole sealing ring screw (3) to fix the upper air inlet sealing ring (2) in 4 to 8 upper air inlet holes (4), and use the upper fixing bolts (6) to fix the upper orifice plate (5) It is fixed together with the upper flange (7) of the upper cylinder. The lower float basket (15) is fixed on the middle orifice plate (12) that has the middle air inlet (23), and the middle air inlet sealing ring (24) is fixed on the middle air inlet (23) with the middle hole screw (26). 23) on. Put the lower sealing float (16) into the ball holder (21) with the damping hole (22), the ball holder (21) is integrated with the damping orifice plate (19), and there are 4 lower air inlet holes in the middle (25). Insert the lower floating ball baske...

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Abstract

The invention discloses a double-layer floating ball type vacuum breaking valve. According to the key points of the technical scheme, after 4-8 upper sealing floating balls are mounted in 4-8 upper floating ball baskets, the upper floating ball baskets are fixed on an upper porous plate; 4-8 upper air inlets are formed on the upper porous plate; the upper porous plate is fixedly arranged on an upper flange of an upper cylinder; a lower sealing floating ball is placed onto a ball bracket with a damping hole; a lower floating ball basket is fixedly arranged on a middle porous plate with a middle air inlet; the lower floating ball basket is covered on the lower sealing floating ball; a lower flange of the upper cylinder, the middle porous plate and an upper flange of a lower cylinder are fixed together by using a middle-position bolt; and a lower flange of the lower cylinder is fixed with a damping porous plate by using a lower bolt. The technical scheme is widely applied to the aspect of vacuum breaking of a water turbine.

Description

Technical field: [0001] The invention is a device for breaking the vacuum in the center of the large shaft of the water turbine and the top machine cover. Background technique: [0002] When the water turbine is shut down, a huge vacuum is generated in the volute of the water turbine, which will cause damage to the water turbine. Therefore, the water turbine needs a vacuum breaking valve to eliminate the damage to the water turbine caused by the vacuum. The floating ball vacuum breaker valve currently used has no water hammer resistance function. The huge water hammer energy often deforms the floating ball and causes water leakage; there is no secondary water return sealing device. If the floating ball deforms and causes water leakage, there is no secondary seal. The water device sealed leaked water. Therefore, the hydropower station needs a vacuum breaker valve that can resist water hammer and has a secondary sealing function. Invention content: [0003] The purpose of ...

Claims

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Application Information

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IPC IPC(8): F16K31/20F16K47/02F16K11/20F03B11/00
CPCY02E10/226Y02E10/20
Inventor 吴雳鸣
Owner HARBIN SHENGDI ELECTRIC POWER EQUIP
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