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Floating type hard sealing high-pressure ball valve

A technology of high-pressure ball valves and hard seals, applied in shaft seals, valve details, valve devices, etc., can solve problems such as gaps in sealing structures, affecting sealing effects, and difficulty in opening and closing, so as to improve sealing effects, improve compression resistance, and improve The effect of ease of opening and closing

Inactive Publication Date: 2021-12-10
申茂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sealing ring can withstand a large thrust of the medium without damage. The existing floating high-pressure ball valve is forced on one side of the spherical valve core after closing, which squeezes the valve core. However, the bottom of the existing ball valve core does not have At the point of stress, long-term pressure causes the valve core to shift to one side, and there is a gap in the sealing structure on both sides of the valve core, which affects the sealing effect and makes it difficult to open and close

Method used

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  • Floating type hard sealing high-pressure ball valve
  • Floating type hard sealing high-pressure ball valve
  • Floating type hard sealing high-pressure ball valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to Figure 1-5 , a floating hard-sealed high-pressure ball valve, including a valve body 1, a valve seat cover 14 is installed on the bottom of the valve body 1, and a gasket 12 is arranged between the valve seat cover 14 and the valve body 1, and the top of the valve body 1 is installed There is a valve cover 5, the top of the valve cover 5 is screwed with a packing gland 8 for adjusting the tightness of the packing, the inside of the packing gland 8 is installed with a valve stem 6, and the top of the valve stem 6 is fixed with a handle 7, and the valve body 1 There is a valve chamber inside, and two split bushes 11 are arranged inside the valve chamber, and a spherical valve core 13 is slidingly installed inside the two split bushes 11, and the top of the spherical valve core 13 is firmly connected with the valve stem 6 , the outer end of the split bushing 11 is provided with a sealing ring 9, and the other side of the sealing ring 9 at the upper end is provide...

Embodiment 2

[0037] refer to Figure 1-4 and Figure 6 , a floating hard-sealed high-pressure ball valve. In this embodiment, other structures remain unchanged. The liquid inlet compensation assembly 2 includes a liquid inlet compensation pipe 201, and the outer side of the liquid inlet compensation pipe 201 is provided with a sealing section 203 and an external threaded part 202. The inner wall of the liquid compensation pipe 201 is provided with a plurality of guide parts 204 in a helically distributed groove structure. When the solution enters the valve, the solution is guided by the groove guide parts 204, and a spiral vortex is generated in the valve to speed up the flow of the solution. Through the speed, the surface impurities can be quickly taken away, and the scaling phenomenon in the internal gap of the valve can be avoided.

Embodiment 3

[0039] refer to Figure 1-4 and Figure 7 , a floating hard-sealed high-pressure ball valve. In this embodiment, other structures remain unchanged. The liquid inlet compensation assembly 2 includes a liquid inlet compensation pipe 201, and the outer side of the liquid inlet compensation pipe 201 is provided with a sealing section 203 and an external threaded part 202. The inner wall of the liquid compensation pipe 201 is provided with a plurality of flow guides 204 in a helically distributed sheet structure, the solution enters the valve, and when the viscous material enters, it is set through the leaf-shaped guides 204 to generate a spiral vortex. Increase the flow rate of the solution.

[0040] When in use, the sliding connection between the split bushing 11 and the spherical valve core 13 is movable and sealed, and a sealing collar assembly 10 is provided at the end of the split bushing 11, through which the split bushing assembly 10 distributes The pressure between the f...

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Abstract

The invention discloses a floating type hard sealing high-pressure ball valve, and relates to the technical field of valves. The ball valve specifically comprises a valve body, a valve seat cover is installed at the bottom of the valve body, a sealing gasket is arranged between the valve seat cover and the valve body, a bonnet is installed at the top of the valve body, the top of the bonnet is in threaded connection with a packing gland for adjusting the tightness of packing, a valve rod is rotationally installed in the packing gland, a handle is fixedly installed at the top of the valve rod, a valve cavity is formed in the valve body, and two split type linings are arranged in the valve cavity. A balance rod and a bracket are arranged at the bottom of a spherical valve element, so that stress points are arranged at the upper end and the lower end of the spherical valve element when the spherical valve element is closed, the spherical valve element is matched with a sealing lantern ring assembly in a high-pressure state, the pressure resistance effect of the spherical valve element is effectively improved, the sealing surface of the split type linings are protected when pressure difference exists on the two sides of the spherical valve element, the sealing effect of the valve is improved, and the opening and closing convenience of the valve in the high-pressure-difference state is improved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a floating hard-sealed high-pressure ball valve. Background technique [0002] With the rapid development of science and technology, the continuous improvement of production technology and product structure, ball valves have rapidly developed into a major valve category. Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy , electric power, municipal, steel and other industries occupy a pivotal position in the national economy. It has the action of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis. The opening and closing part (ball) of the ball valve is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids, among which the hard-sealed V-shaped ball val...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/08F16K5/20F16K27/06F16K41/02
CPCF16K5/0694F16K5/06F16K5/08F16K5/201F16K27/067
Inventor 申茂
Owner 申茂