Product Features

※Structural type: Axial piston structure with low pressure loss;

※Drive mode: single acting piston spring open pneumatic actuator, multiple sets of spring valve opening action are safe and reliable;

※pressureBalanced structural design;

※ Double sealed structure, more reliable sealing;

※The pneumatic actuator isSingle acting piston spring open structure, multiple sets of spring valve opening action are safe and reliable;

※Double layer linear punching sleeve design, high control accuracy;

※China National Petroleum Corporation's joint research and development of key equipment for oil and gas pipelines through localization;

※GermanyTUVCertified Security Integrity LevelSIL-2conform toIEC 61508IEC 61511；

※Issued by the General Administration of Quality Supervision, Inspection and Quarantine of ChinaTS-AManufacturing license for regulating valves;

Product parameters

Working principle

A500The series axial flow anti surge valve refers to an axial streamlined flow channel with a straight symmetrical and unobstructed inner cavity of the valve body. This internal cavity design makes it very easy for the medium to pass through, and the fluid is evenly distributed at various positions inside the valve, thereby reducing the impact of local high-speed flow, turbulence, jet flow, etc., improving the stability of the valve, and minimizing turbulence and noise.

A500The main components of the series axial flow anti surge valve are the axial flow main valve, actuator, control system, and accessories. The valve body of the main valve is a complete cast body, and the valve core moves along the centerline of the valve. The main valve mainly relies on the change of the relative flow area between the valve core and the sleeve to regulate the flow rate and pressure of the medium, thereby achieving the purpose of throttling regulation. The valve core is achieved through a90The angular transmission mechanism is operated by a pair of sliding gears, which are located on the valve stem and push rod respectively. The error between the gears is very small, ensuring that there is no lag in the gear transmission mechanism and no "movement" between the valve stem and push rod. The flat toothed bed is isolated from the fluid by two primary seals located on the valve stem and guide sleeve.

The actuator is a single acting piston spring open cylinder component, and the anti surge valve is controlled by the control system to achieve valve control.

Normal regulationWhen the system is in normal working condition and solenoid valve ⑦ is energized4～20mAThe control signal of increases, and the output pressure of locator ④ increases. Through the action of solenoid valve ⑦ on the control port of flow amplifier ⑧ and the control port of pilot quick release valve ⑨, the output pressure of flow amplifier ⑧ increases, and pilot quick release valve ⑨ is completely closed. The pressure in the upper chamber of the actuator piston increases, and the actuator pushes the valve downwards (usually in the direction of valve closure); equal4～20mAThe control signal of the actuator decreases, and the output pressure of the locator ④ decreases. Through the action of the solenoid valve ⑦ and the control port of the flow amplifier ⑧ and the control port of the pilot quick release valve ⑨, the output pressure of the flow amplifier ⑧ decreases. The pilot quick release valve ⑨ partially opens and closes, and the pressure in the upper chamber of the actuator piston decreases. The actuator drives the valve upward (usually in the direction of valve opening) under the action of spring force.

Quick open functionWhen solenoid valve ⑦ loses power, the solenoid valve cuts off the control air circuit of pneumatic amplifier ⑧ and the control air circuit of pilot quick release valve ⑨. Pneumatic amplifier ⑧ stops outputting and discharges the output pressure. Pilot quick release valve ⑨ and quick release valve15Fully open the quick exhaust and quickly open the valve.

Control schematic diagram

Product Structure Diagram

Structural diagram of pneumatic actuator

Main valve structure diagram

Product dimension diagram

DN200-DN600 Outline Dimensional Drawing

Size Connection

ASV - A500 DN200 - DN600

interface size

Product ordering and selection

Selection of anti surge valve

Other special configuration requirements

For example, please indicate whether electric heat tracing and flow characteristics are required.