312A6077P004 | GE Servo Valve

The GE 312A6077P004 servo valve is related to the Moog 312A6077P001 servo valve mentioned above. In fact, 312A6077P004 is the GE number, and its corresponding Moog number is G771K202. Here are some introductions about it:

Working Principle

As an electro-hydraulic servo valve, it receives electrical analog signals and outputs modulated flow and pressure accordingly. Usually a two-stage valve structure is adopted. The first stage is a nozzle baffle type, and its outlet pressure is controlled by the control signal; the second stage is a slide valve type, and the pressure to the actuator (such as a brake cylinder, etc.) is controlled according to the output pressure of the first stage. When there is an input electrical signal, the torque motor will generate electromagnetic force, drive the baffle to move, change the gap between the nozzle and the baffle, and then change the pressure of the control chamber, push the valve core to move, realize the control of fluid flow and pressure, and form a closed-loop control through the feedback mechanism to improve the control accuracy.

Features

High-precision control: It can achieve precise control of flow and pressure, meet the needs of various high-precision control occasions, maintain control accuracy at a high level, and ensure precise regulation in industrial processes.

Good dynamic performance: It has fast response capability, can respond to changes in input signals in a short time, and quickly adjust output flow and pressure to adapt to dynamic changes in the system. It can be used in occasions with high response speed requirements.

High reliability: It adopts high-quality materials and advanced manufacturing processes, undergoes strict quality inspection, has high reliability and stability, can operate stably for a long time in harsh working environments, and reduces maintenance costs and equipment downtime.

Application areas

Power industry: For example, in the control system of gas turbines, it is used to accurately control the flow and pressure of fuel or hydraulic oil to adjust the operating status of gas turbines and ensure the stability and efficiency of the power generation process.

Industrial automation: It can be applied to various industrial equipment that require high-precision position control, speed control or pressure control, such as CNC machine tools, industrial robots, injection molding machines, etc., which helps to improve the processing accuracy and production efficiency of equipment.

Aerospace: In the flight control system of the aircraft, the aircraft engine control system and some aerospace ground test equipment, it is used to achieve precise control of the hydraulic system to ensure flight safety and reliable operation of the equipment.

Technical parameters

Due to the lack of a specific technical parameter table for this type of servo valve, and the parameters in different application scenarios may vary, but in general, its rated flow rate may be in the range of several liters to tens of liters per minute to meet the flow requirements of different systems.

The maximum working pressure can usually reach tens of MPa or even higher, which can meet the working requirements of high-pressure hydraulic systems.

The response time may be between a few milliseconds and tens of milliseconds, and the specific value depends on the structure and performance characteristics of the valve to achieve fast control response.

The rated signal current is generally in the milliampere level, and the common ones are 10 mA, 20 mA, etc., so as to match the controller and signal source.