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Well mouth multistage vortex type regulating valve for natural gas extraction

A technology for regulating valves and natural gas, applied in sliding valves, valve details, valve devices, etc., can solve problems such as difficult long-term stable operation, blockage, etc., achieve the effects of reducing turbulent flow intensity, reducing wall erosion, and improving service life

Inactive Publication Date: 2018-04-20
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But objectively speaking, the throttle valve still has some disadvantages in structural design. For example, when the high-pressure gas well output contains a lot of fine impurities, the non-smooth labyrinth flow channel design will cause serious blockage problems, making it difficult to time stable operation
[0007] In general, the current natural gas extraction operations often have complex and harsh conditions such as high pressure, erosive fluids, entrained sand particles, and other solid impurities. With the continuous improvement of people's requirements for product performance and the cost reduction and efficiency increase , The pressure of energy saving and emission reduction is gradually increasing. The existing natural gas wellhead adjustment equipment is difficult to meet the above complex and harsh conditions. The traditional method of frequent replacement or maintenance of throttle valves can no longer meet the demand. Maintenance cost urgently needs innovation and development of a gas well wellhead choke valve that can adapt to complex and harsh working conditions

Method used

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  • Well mouth multistage vortex type regulating valve for natural gas extraction
  • Well mouth multistage vortex type regulating valve for natural gas extraction
  • Well mouth multistage vortex type regulating valve for natural gas extraction

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specific Embodiment approach

[0026] The natural gas exploitation of the present invention adopts wellhead multi-stage vortex control valve, and its preferred embodiment is:

[0027] Including hand wheel, bonnet, valve body, valve top cover, bearing top cover, isolation sleeve, packing box, multi-stage scroll regulating valve core, plunger valve stem, valve stem lower packing, valve stem upper packing;

[0028] The bearing between the valve top cover and the bearing top cover is equipped with a locking positioning screw, and when the locking positioning screw is tightened, the plunger valve stem is limited;

[0029] The plunger valve rod includes three parts: upper rod, lower rod and plunger body, which are mainly connected with valve top cover, isolation sleeve, guide ring, valve cover, packing box, valve core upper sleeve, multi-stage scroll The regulating valve core is in contact, the plunger valve stem and the valve top cover are assembled through threads, and the plunger body at the bottom of the plun...

specific Embodiment

[0044] Such as Figure 1 to Figure 4b As shown, the multi-stage vortex control valve is mainly composed of handwheel 1, handwheel assembly pin 2, valve top cover 3, locking positioning screw 4, bearing top cover 5, isolation sleeve 6, guide ring 7, valve cover 8, Packing box 9, spool upper sleeve 10, multi-stage vortex regulating spool 11, spool lower sleeve 12, lower spool sealing ring 13, valve body 14, pressure relief screw 15, upper spool sealing ring 16 , Valve body bolt 17, gasket ring 18, valve stem lower packing 19, valve stem upper packing 20, cylindrical pin 21, valve body cover assembly pin 22, bearing 23, oil cup 24, handwheel pin 25, plunger valve stem 26 and other components. The valve body bolts 17 connecting the valve cover 8 and the valve body 14 are M44 bolts; the hand wheel 1 and the valve top cover 3 are connected by flat keys 26; the bearing 23 between the valve top cover 3 and the bearing top cover 5 is an angular contact ball bearing; The packing box 9...

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Abstract

The invention discloses a well mouth multistage vortex type regulating valve for natural gas extraction. The well mouth multistage vortex type regulating valve for natural gas extraction comprises a hand wheel, a valve deck, a valve body, a valve top cover, a bearing top cover, a spacing sleeve, a packing box, a multistage vortex type regulating valve element, a plunger valve rod, lower valve rodpacking and upper valve rod packing. The multistage vortex type regulating valve element is installed in the valve body and positioned through an upper valve element sleeve and a lower valve element sleeve in a jointly matched mode. The valve deck and the valve body are connected through a bolt, the number of regulating discs of the multistage vortex type regulating valve element is changed by moving the plunger rod so as to regulate the flow, and the working way can guarantee that good linearity is kept during flow regulating. On the basis of multistage stable depressurization, flow regulating and speed regulating, the multistage vortex type regulating valve can effectively integrate fluid, and reduce the turbulence intensity of the fluid. Due to the arrangement of cylindrical blocking plates of the valve element of the multistage vortex type regulating valve, wall erosion is greatly relieved in the fluid controlling process, so that the service life of the valve body is prolonged. The multistage vortex type regulating valve can adapt to complex severe conditions of high pressure, erosive fluid, entrainment with sand and other mechanical impurities, and the like.

Description

technical field [0001] The invention relates to a valve for pressure and flow adjustment in the field of natural gas exploitation, in particular to a wellhead multi-stage vortex regulating valve for natural gas exploitation, which is suitable for harsh working conditions such as high solid-phase impurity content and large pressure difference. Background technique [0002] With the continuous development of social economy and people's increasing attention to environmental protection issues, the use and consumption of natural gas has gradually increased, and the exploration and development of natural gas has also been strengthened accordingly. In the actual production process, the output of natural gas wells often contains impurities such as mud sand, hydrate, and hydrogen sulfide, and at the same time, the formation pressure of some gas wells is very high. , high flow rate and other harsh working conditions. Because of this, there are high requirements for gas wellhead choke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/314F16K3/30F16K27/04F16K35/06F16K41/02F15D1/00
CPCF16K3/314F15D1/009F16K3/30F16K27/041F16K35/06
Inventor 陈家庆潘威丞丁国栋姬宜朋孟浩
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY