Large capacity sleeve regulating valve

Abstract

The invention relates to a large-capacity sleeve regulating valve which comprises a valve body, one end in the valve body is provided with an inlet flow pass allowing fluid to flow therein and an outlet flow pass allowing fluid to flow out, the valve body is internally provided with a valve body cavity, the valve body cavity is located between the inlet flow pass and the outlet flow pass, the valve body cavity is internally provided with a cage type sleeve, the cage type sleeve is internally provided with a valve core capable of conducting linear movement along the inner wall of the cage type sleeve, and when the valve core moves in the cage type sleeve, the connection state between the inlet flow pass and the outlet flow pass can be adjusted; the center line of the cage type sleeve is deviated from the center line of the valve body. The large-capacity sleeve regulating valve is compact in structure, the probability that turbulent flow occurs when fluid flows through the valve can be lowered, the flow resistance coefficient of the valve is lowered, on the premise that it is guaranteed that the nominal diameter of the valve is unchanged, the flow capacity of the valve is improved, good economy is achieved, and the valve is safe and reliable.

Description

technical field [0001] The invention relates to a sleeve regulating valve, especially a large-capacity sleeve regulating valve, in particular to a valve which can reduce the flow resistance coefficient of the valve and increase the flow capacity of the valve without changing the size of the inner cavity of the valve. A sleeve regulating valve belongs to the technical field of sleeve regulating valves. Background technique [0002] Sleeve regulating valve is widely used in fluid control occasions in various industrial production processes. Its working principle is to control the flow of the valve by moving the relative position of the spool in the cage sleeve. The fluid enters the cage sleeve from the inlet flow channel through the bottom of the cage sleeve, and then enters the outlet flow channel through the window on the cage sleeve. Under normal circumstances, the window on the cage sleeve can be selectively covered by the spool, thereby limiting the flow through the cage...

AI Technical Summary

Problems solved by technology

The flow resistance coefficient of the sleeve regulating valve depends on the structural type, nominal diameter and other factors of the valve. The centerline of the traditional sleeve regulating valve body coincides with the centerline of the cage sleeve. The advantage is that it is easy to design and the valve shape It is more beautiful; but when the fluid enters the inside of the cage sleeve, the fluid needs to deflect 90° or 180° after passing through the radially oriented flow window before entering the outlet channel, which results in the intensification of the unsteady three-dimensional turbulent flow form in the valve body. The flow resistance coefficient of the valve becomes larger, the flow capacity of the valve is weakened, and it cannot even meet the flow demand of the process

In order to improve the flow capacity of the valve, it is usually necessary to replace the valve with a larger diameter, which will lead to a substantial increase in the purchase and production costs of the customer, and the economy is not good

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