Two-way low-operating torque high-pressure stop valve
A technology for operating torque and globe valves, which is applied in the direction of lifting valves, valve details, valve devices, etc., can solve the problems that globe valves are not suitable for two-way pressure-bearing environments, and achieve compact structure, reduced structural size and weight, and small operating torque Effect
Inactive Publication Date: 2017-09-05
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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[0021] As shown in the figure, the specific implementation is as follows:
[0022] A two-way low operating torque high pressure shut-off valve includes a valve body 1 with an end flow port and a side wall flow port. The end flow port of the valve body 1 communicates with a first flow passage A, and the side wall flow port of the valve body 1 communicates with a second flow port. Flow channel B, the end of the valve body away from the first flow channel A is covered with a valve cover 10, the valve body and the valve cover are directly connected together by a flange, and the valve cover 10 is fixed on the valve body 1 by a fastener 9 , The fastener 9 is a number of bolts, the valve body 1 is provided with a piston cylinder 5, and the piston cylinder 5 is slidably provided with a valve flap 2 with an I-shaped axial cross section. The valve flap is a disc with two ends. The middle is a cylindrical shaped part, one end of the valve flap is provided with a groove, a valve stem 3 is in...
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The invention relates to a two-way low-operating torque high-pressure stop valve. A space which is formed in a way that one end of a valve clack arranged in the stop valve is matched with an inner cavity of a piston cylinder is a balance chamber, and media in a first flow channel are led to the balance chamber through the interaction of a channel and a diversion hole, so that pressure in the balance chamber is balanced with that in a first channel, the influence of medium force is overcome, and reliable sealing between the valve clack and a valve body can be realized by adopting less operating force of a valve rod. The two-way low-operating torque high-pressure stop valve has the characteristics of two-way use, sealing reliability, high voltage endurance capability, compact structure and the like, and the operating requirement of the stop valve with high pressure and large diameter for flow medium pipelines is met. By adopting the structural design of low operating torque of the stop valve, compared with a traditional stop valve, the working load of the valve rod, a valve cover, a bracket and other components and parts can be obviously reduced, so that the physical dimension and weight of related components and parts are reduced, and the structure of the stop valve is compact.
Description
Technical field [0001] The invention relates to a device, in particular to a two-way low operating torque and high pressure stop valve. Background technique [0002] The cut-off valve refers to a valve whose closing member and valve flap move along the center line of the valve seat, which mainly plays a role of cutting off the pipeline. Due to the advantages of low friction between the sealing surfaces, long service life, low opening height, low manufacturing cost, and easy maintenance during the opening and closing process, it is widely used in petrochemical, shipbuilding, power station, metallurgy, ocean engineering and other fields. When the traditional shut-off valve closes the valve, because the disc is affected by the inlet pressure of the valve body, the valve operating torque is large, and it is aggravated with the increase of the valve medium pressure and the increase of the diameter, which seriously restricts the high pressure of the shut-off valve. , Application on la...
Claims
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IPC IPC(8): F16K39/02F16K27/02F16K25/00F16K41/02F16K1/48
CPCF16K1/487F16K25/005F16K27/02F16K39/02F16K39/022F16K41/02
Inventor 丁强伟刘兴玉张新奇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP