Champagne tower type multi-stage throttling control valve

A technology of throttling control valves and champagne towers, which is applied in the direction of valve lifts, valve details, valve devices, etc., can solve the problems of valve failure, difficult processing, and many bending times, and achieve good anti-vibration performance, processing difficulty and Low cost, leading to robust effects

CN111473155AActive Publication Date: 2020-07-31HEFEI GENERAL MACHINERY RES INST
7 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-07-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of valves, in particular to a Champagne tower type multi-stage throttling control valve applied to high-pressure-difference medium noise reduction cavitation damageresistance. The Champagne tower type multi-stage throttling control valve comprises a valve body, a valve cover, a throttling sleeve and a valve element. The appearance of a sleeve cavity of the throttling sleeve is in a ladder hole shape with two or more layers, the appearance of the valve element is in a ladder shaft shape with two or more layers and coaxial with the throttling sleeve, the number of shaft shoulders of the valve element is smaller than or equal to the number of hole shoulders of the sleeve cavity of the throttling sleeve, therefore, in the axial direction, each shaft shoulderof the valve element can be in seal face fit with the corresponding hole shoulder of the throttling sleeve, the hole shoulder of the throttling sleeve and / or the shaft shoulder of the valve element are / is axially or slantly provided with a runner groove, the structure is compact and simple, the action reliability is high, the valve machining difficulty and cost can be further reduced while effective noise reduction and cavitation damage resistance functions are achieved, and the valve is particularly suitable for being used in the high-pressure-difference medium control condition.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of valves, in particular to a champagne tower type multi-stage throttling control valve that can be applied to high-pressure differential media for noise reduction and cavitation damage resistance. Background technique

[0002] Multi-stage throttling control valve is the most important link in automation control, its reliability and adjustment accuracy will affect the safety and quality of system automation operation. With the continuous development of the process industry, there are more and more working conditions that require high pressure differential control of the medium in the process. The large pressure differential of the medium is prone to vibration, noise, cavitation damage, etc., resulting in multi-level throttling control. Severe damage to valve trim.

[0003] In the prior art, the multi-stage throttling control valve mainly has two structural forms, that is, a multi-stage sleeve-type regulating valve or...

Examples

Embodiment Construction

[0038] For ease of understanding, the specific structure and working method of the present invention are further described as follows:

[0039] The concrete implementation structure of the present invention can refer to Figure 1-7 As shown, its main structure includes a valve body 10, a valve cover 20, a valve core 40, a throttle sleeve 30, a valve seat 50, a valve stem 60 and the like. The valve body 10 in the embodiment is an angle structure, the fluid inlet 11 is arranged through the side, and the fluid outlet 12 is arranged through the bottom. The fluid outlet 12 is provided with an expanding section or the fluid outlet 12 has a self-expanding structure. For details, refer to Figure 1-2 shown.

[0040] For the spool 40 and the throttling sleeve 30, as shown in the figure Figure 1-7 As shown, both are stepped, and the shaft diameter, aperture and length match each other. In other words, in Figure 1-2 In the structure shown, the spool 40 is a multi-layer stepped shaf...