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A large diameter piston pressure regulating valve

A piston-type, large-diameter technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of inability to achieve full diameter and low pressure increase speed, and achieve the effect of ensuring sealing and increasing contact area.

Active Publication Date: 2021-02-05
SHANGHAI FIGURE CRYOGENIC VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Can't do full bore
Boost speed is therefore smaller

Method used

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  • A large diameter piston pressure regulating valve
  • A large diameter piston pressure regulating valve

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 and figure 2 As shown, a large-diameter piston-type pressure regulating valve includes a valve body 1, an upper chamber and a lower chamber are arranged in the valve body, a valve disc 2 is arranged in the lower chamber, and a lower chamber is arranged on the lower opening of the lower chamber. The valve cover 3, the lower end of the valve disc is connected with the lower valve cover, and the lower spring 4 is arranged between the valve disc and the lower valve cover, and the upper opening of the upper chamber is provided with an upper valve cover 5, and the upper valve cover passes through a connecting pipe 6 is connected with a cylinder 7, a valve stem 8 is arranged in the connecting pipe, the lower end of the valve stem is engaged with the top of the disc, and the upper end of the valve stem is connected with a piston 9; the piston is arranged in the cylinder, and the piston and the cylinder There is an O-ring 10 at the junction of the body, and th...

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Abstract

The invention provides a large-diameter piston-type pressure-regulating valve, which includes a valve body, an upper chamber and a lower chamber are arranged in the valve body, a valve disc is arranged in the lower chamber, and a lower valve cover is arranged on the lower opening of the lower chamber. , the lower end of the valve disc is connected with the lower valve cover, and a lower spring is provided between the valve disc and the lower valve cover, and an upper valve cover is provided at the upper opening of the upper chamber, and the upper valve cover is connected with a cylinder body through a connecting pipe , there is a valve stem in the connecting pipe, the lower end of the valve stem is clamped with the top of the valve disc, and the upper end of the valve stem is connected to a piston; the piston is arranged in the cylinder, and the connection between the piston and the cylinder is provided with an O-shaped seal ring, the piston moves up and down along the length of the cylinder body, the cylinder body is fixed with a cylinder head, the cylinder head is provided with an upper spring and a spacer, the spring is located between the piston and the spacer, and the top of the cylinder head is provided with an adjusting screw rod to adjust The screw rod is against the upper surface of the spacer.

Description

technical field [0001] The invention relates to mechanical equipment, in particular to a large diameter piston pressure regulating valve. Background technique [0002] In the low-temperature storage tank, through the heat-absorbing vaporization characteristics of the low-temperature medium, the liquid-phase low-temperature medium in the storage tank flows into the vaporization pipe, and the vaporization pipe is connected to the gas phase of the storage tank, and the medium is vaporized to boost the pressure of the storage tank. Meet the user's required pressure. In order to control the boost pressure, at this stage, the diaphragm is mainly used to sense the pressure to realize the opening and closing of the valve, so as to achieve the purpose of controlling the pressure. [0003] At present, this one-diaphragm induction type has a small deformable amount of the diaphragm, and the opening of the valve gradually decreases during the boosting process. The DN50 pressure regula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/32F16K27/02F16K31/122F15B15/14
CPCF15B15/1423F15B15/1452F15B15/1471F16K1/32F16K27/02F16K31/1221F16K31/1223
Inventor 胡建红吴淑民罗学武邹帅超
Owner SHANGHAI FIGURE CRYOGENIC VALVES
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