Combined throttling pair-type regulating valve
A technology of regulating valves and throttling sleeves, which is applied in the direction of lifting valves, sliding valves, valve details, etc., and can solve problems such as increasing costs and increasing bypasses
Inactive Publication Date: 2014-05-21
HARBIN HBC VALVE
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Problems solved by technology
For pipelines with both small flow and high pressure difference conditions and large flow and low pressure difference conditions, only bypasses and shunt adjustments can be added, which increases costs
Method used
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Embodiment Construction
[0012] exist figure 1 In the shown embodiment, the valve cover (7) presses the upper throttle sleeve (5), the upper throttle sleeve (5) presses the lower throttle sleeve (3), and then the valve seat (2) is pressed against the valve body (1), the valve stem (6) drives the valve disc (4) to move in the upper throttle sleeve (5) and the lower throttle sleeve (3) to adjust the flow area of the throttle pair. The lower throttling sleeve (3) is a multi-stage throttling and decompression regulating pair, and the upper throttling sleeve (5) is a single-stage throttling and decompression regulating pair.
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The invention discloses a combined throttling pair-type regulating valve, and belongs to the field of thermal power and nuclear power valves. The combined throttling pair-type regulating valve is installed on a water vapor system pipe of a thermal power and nuclear power unit, and is an importance device for regulating the flow, the pressure and the temperature of media. The combined throttling pair-type regulating valve is composed of a valve body, a valve seat, a lower throttling sleeve, a valve clack, an upper throttling sleeve, a valve rod, a valve deck and the like, the upper throttling sleeve is tightly pressed with the valve deck, the lower throttling sleeve is then tightly pressed with the upper throttling sleeve, the valve seat is tightly pressed on the valve body through the upper throttling sleeve, and the valve rod drives the valve clack to move in the upper throttling sleeve and the lower throttling sleeve to regulate the through-flow area of the throttling sleeves. The combined throttling pair-type regulating valve has the advantages of being effectively suitable for working conditions with the large differential pressure changes and suitable for the small-flow high-differential-pressure working condition and the large-flow low-differential-pressure working condition.
Description
technical field [0001] The invention relates to a combined throttling auxiliary regulating valve, which belongs to the field of thermal power and nuclear power valves. Background technique [0002] Combined throttling auxiliary regulating valve is installed in the water vapor system pipeline of thermal power and nuclear power units, and is an important equipment for regulating medium flow, pressure and temperature. [0003] At present, the multi-stage throttling and decompression adjustment method is adopted for the small flow and high pressure difference working conditions, and the single-stage throttling and decompression adjustment method is mostly used for the large flow and small pressure difference working conditions. For pipelines with both small flow and high pressure difference conditions and large flow and low pressure difference conditions, only bypasses and shunt adjustments can be added, which increases costs. [0004] The patent of the present invention effect...
Claims
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IPC IPC(8): F16K1/52F16K1/00
CPCF16K3/246F16K3/267F16K47/08
Inventor 邹世浩万胜军娄冬梅郑红丽
Owner HARBIN HBC VALVE