News Center

company news

Industry News

Technology corner

07

2017-07

Introduction to the Function of Electrical Valve Positioners

Picture Name

2017-07-22

An electric valve positioner is a key accessory for control valves. It uses the valve stem displacement signal as the feedback measurement input and the controller output signal as the setpoint, compares the two, and when a deviation exists, adjusts the output signal to the actuator to drive its operation, thereby establishing a one-to-one correspondence between the valve stem displacement and the controller output signal. Next, we will introduce the functions of an electric valve positioner: 1. Electric valve positioners are essential for control systems that demand high control quality, as they help improve the positioning accuracy of control valves and enhance their reliability. 2. Installation is recommended when the pressure differential across the valve exceeds 1 MPa.

Picture Name

07

2017-07

What are the classifications of valve positioners?

Picture Name

2017-07-25

What are the classifications of valve positioners? The following section provides a detailed introduction. According to the direction of action, valve positioners can be divided into single-action and double-action types. A single-action valve positioner is used with piston-type actuators, in which the positioner operates in only one direction; a double-action valve positioner acts on both sides of the cylinder of the piston-type actuator, thereby exerting force in two directions. Based on the sign of the gain between the valve positioner’s output and input signals, valve positioners are classified as direct-acting and reverse-acting. In a direct-acting valve positioner, as the input signal increases, the output signal also increases, resulting in a positive gain. A reverse-acting valve positioner, on the other hand,

Picture Name

07

2017-07

On what criteria should valve positioners be selected?

Picture Name

2017-07-29

A valve positioner (also known as a pneumatic valve positioner) is a key accessory for control valves and is typically used in conjunction with pneumatic control valves. It receives the output signal from the controller and uses this signal to regulate the pneumatic control valve. Once the control valve actuates, the displacement of the valve stem is fed back to the positioner via a mechanical linkage, and the valve position is transmitted to the higher-level control system in the form of an electrical signal. In a wide range of control applications, the valve positioner is one of the most important accessories for control valves. In particular, when selecting the most suitable valve positioner for a specific application, the following factors should be carefully considered: 1) Valve positioning

Picture Name

08

2017-08

What is the function of an electric valve positioner?

Picture Name

2017-08-03

An electric valve positioner is a key accessory for control valves. It uses the valve stem displacement signal as the feedback measurement input and the controller output signal as the setpoint, comparing the two. When a deviation exists, it adjusts the output signal to the actuator, thereby driving the actuator to operate and establishing a one-to-one correspondence between the valve stem displacement and the controller output signal. Next, we will introduce the functions of an electric valve positioner: 1. Electric valve positioners are essential for control systems that demand high control quality, as they help improve the positioning accuracy of control valves and enhance their reliability. 2. Installation is recommended when the pressure differential across the valve exceeds 1 MPa.

Picture Name

08

2017-08

What are the shortcomings of conventional valve regulators?

Picture Name

2017-08-04

Control valves are the final elements in a control system; once they fail, the safe operation of the unit is directly compromised, with significant adverse effects on the production process. The use of smart valve positioners can enhance the flow characteristics and performance of control valves by enabling digital communication with DCS systems or fieldbus devices, thereby improving the enterprise’s process control capabilities and ensuring the safe and stable operation of the unit. Shortcomings of Conventional Positioners 1) Conventional positioners generally operate on the principle of mechanical force balance, employing a nozzle–flapper mechanism with numerous moving parts. As a result, they are highly susceptible to disturbances such as temperature fluctuations and external vibrations, exhibiting poor environmental robustness; moreover, the spring constant of the return spring is

Picture Name

08

2017-08

Introduction to the Principle of Intelligent Valve Positioners

Picture Name

2017-08-08

Smart valve positioners are primarily used to control and regulate control valves by acquiring the current control signal output from the controller and using pneumatic signals to adjust the valve. Once the control valve actuates, the valve stem undergoes a certain displacement, which is then transmitted as a feedback signal to the valve positioner. The positioner compares and analyzes the input control signal with the valve-position feedback signal; if the two signals differ, it activates the valve’s actuating mechanism until the signals match. When the two signals are identical, the actuating mechanism ceases to adjust the valve position. Smart electric valve positioners offer advantages such as high control accuracy, robust self-diagnostic capabilities, and high efficiency. Smart electric valve

Picture Name
< 1...91011...27 > 跳转到 页

CONTACT INFORMATION

Address: Room 501, Building 9, Guanggu Power Green Environmental Protection Industrial Park, 308 Guanggu Avenue, Donghu High-tech Zone, Wuhan City, Hubei Province

Telephone:（86-27）8738-3559 Free Hotline:400-878-5856

Business Hotline (Business hotline):13387658687,13707140294
Technical Hotline:13628621551

Business mailbox:torleo@qq.com
Company Email:1031076000@qq.com

OFFICIAL ACCOUNTS

Welcome to our official public number.

Wuhan Torleo

ONLINE MESSAGE

Submit Message
%{tishi_zhanwei}%

SAF Coolest v1.3.1.2 设置面板SWWSX-AIUY-HASWE-AFV

违禁词： First, best, first-class, leading, unique, king, leader, leader, extreme, leader
营业执照及SEO链接： Business License

无数据提示

Sorry, the current column is being updated, please look forward to it!

You can view other columns or returnHome Page

V1.3.1 SVG图标库请自行添加图标，用div包起来，并命名使用