Membrane pressure type dynamic balance manual adjusting valve

Abstract

The invention provides a membrane pressure type dynamic balance manual adjusting valve. The adjusting valve comprises a handle component and an integrated valve which is positioned below the handle component and is fixedly connected with the handle component, wherein the adjusting valve is uniquely and integrally designed, so the dynamic flow balance of the valve is integrally combined with flow adjustment; the flow adjustment is realized through a low-torque small-angle travel turn-off structure; a valve body and an automatic flow balance component structure are optimally designed, so flow resistance and noise are reduced; the design of the handle component is suitable for the operation environment of a pipeline well; the adjusting valve has the advantages of high flow capacity, accuracyand convenience of operating control, wide working pressure difference range, convenience of assembly and maintenance, long life and low cost; a manual setting state can be controlled in real time through the flow of the valve; the adjusting valve is mainly applied to building heating, ventilating and air conditioning systems, industrial or residential fluid pipe network transmission and distribution systems and industries such as petroleum, chemical industry and the like; thus, the misadjustment phenomenon of water conservancy flow of a client pipe network system can be substantially eliminated and the valve is adjusted in real time to fulfill the aim of guaranteeing dynamic flow balance of a pipe network and energy conservation.

Description

technical field [0001] The invention relates to a valve, in particular to a membrane pressure dynamic balance manual regulating valve. Background technique [0002] In the variable flow water system of fluid transmission and distribution, the actual design often only considers the resistance calculation of the most unfavorable loop. When the pressure of the most unfavorable node of the system is guaranteed, the pressure of other nodes may be huge The value is lower than the design value, resulting in hydraulic imbalance of the system. Excessive or improper selection of water pumps will also cause the operating flow to deviate from the design value. The result of hydraulic imbalance in the pipe network is a large waste of energy, increased operating noise and shortened service life of equipment. In order to alleviate or eliminate this unbalanced pipe network, it is necessary to continuously debug the system, which is not only cumbersome and time-consuming, but more important...

AI Technical Summary

Problems solved by technology

[0002] In the variable flow water system of fluid transmission and distribution, the actual design often only considers the resistance calculation of the most unfavorable loop. When the pressure of the most unfavorable node of the system is guaranteed, the pressure of other nodes may be huge than the design value, resulting in the hydraulic imbalance of the system

Excessive or improper selection of the water pump will also cause the operating flow to deviate from the design value. The result of the hydraulic imbalance of the pipe network is a large waste of energy, an increase in operating noise and a shortened service life of the equipment.

In order to reduce or eliminate this unbalanced pipe network, it is necessary to continuously debug the system, which is not only troublesome and time-consuming, but more importantly, this adjustment is lagging behind, and the result is that the system is unbalanced at any time in actual use.

[0003] At present, the dynamic balance manual control valve produced by domestic manufacturers has a small working pressure range, low flow control accuracy, and serious vibration and noise, which cannot meet the needs of actual projects.

From the structural analysis of the products, these products simply combine the flow balance valve and the regulating valve together. It is beneficial to the practical application of engineering; the design of the valve handle either has locking defects, or it is not suitable for the narrow pipeline well environment because it takes up a large space, or it is prone to jamming in a dirty environment

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