Definitions and basic concepts

The booster valve IV is a valve device for increasing the pressure of a fluid. It plays a key role in many industrial and mechanical systems, receiving fluid from a low-pressure source and raising its pressure to the higher pressure level required by the system to meet, for example, delivery, drive or other process requirements.

Structural features

Valve body: The valve body of the booster valve IV is usually a strong metal shell, usually made of cast iron, cast steel or stainless steel. Its shape and size are designed according to specific flow and pressure requirements, and must be able to withstand the internal high-pressure environment. For example, in a high pressure hydraulic system, the valve body may be designed to be cylindrical with sufficient wall thickness to prevent rupture.

Spool and Seat: The valve core is a key component to control fluid flow and pressure rise. It can move in the valve body and adjust the fluid passage area through the cooperation with the valve seat. The valve seat is usually an annular structure fixed inside the valve body, and the contact surface of the valve core is precision machined to ensure good sealing. In some high-precision booster valves IV, the valve core and valve seat may be made of carbide materials to resist the flushing and wear of high-pressure fluid.

Drive mechanism: In order to enable the spool to work properly, the booster valve IV is equipped with a drive mechanism. This drive mechanism may be manual (e. g. handwheel adjustment), electric (motor drive), pneumatic (compressed air drive) or hydraulic (hydraulic oil drive). The electric drive mechanism usually includes components such as a motor, a reducer, and a transmission rod, which can accurately control the displacement of the valve core and achieve precise pressure adjustment.

Working principle

When the low-pressure fluid enters the inlet of the booster valve IV, the position of the valve core is adjusted by the driving mechanism to change the size of the fluid passage. As the channel becomes smaller, according to Bernoulli's principle of fluid mechanics (in the flow of fluid, the pressure is small where the flow rate is large and the pressure is strong where the flow rate is small) and the continuity equation (the embodiment of mass conservation in fluid mechanics, I .e. the mass of fluid passing through any section of the pipeline per unit time is equal), the flow rate of fluid will increase and the pressure will increase accordingly. At the outlet, the fluid exits at a higher pressure. For example, in a simple hydraulic booster system, when the valve core of the booster valve IV approaches the valve seat, the passage area from the inlet to the outlet is reduced, the flow rate of the low-pressure hydraulic oil increases, and the pressure rises, thereby realizing The function of pressurization.

In addition, some booster valves IV may also use the principle of multi-stage pressurization. That is, the fluid passes through a plurality of pressurization stages, and each stage pressurizes the fluid to a certain extent, and finally reaches the required high pressure. This multi-stage supercharging method can make the pressure increase more stable, and improve the efficiency of supercharging to a certain extent.

Application areas

Hydraulic system: In the hydraulic system of various engineering machinery, machine tools and other equipment, the booster valve IV is widely used. For example, in the hydraulic outrigger system of a large crane, the low-pressure oil provided by the hydraulic pump needs to be pressurized to provide sufficient support to ensure the stability of the crane during work.

Pneumatic system: In some pneumatic equipment with high air pressure requirements, such as the follow-up booster link of the high-pressure air compressor, or some special pneumatic tools (such as high-pressure spray gun, etc.), the booster valve IV can increase the pressure of the ordinary air source to meet the working requirements of the equipment.

Water supply system: In the water supply system of high-rise buildings, in order to deliver water to higher floors, it is necessary to pressurize the water. The booster valve IV can be installed in the water supply pipeline to pressurize the low-pressure water of the municipal water supply and send it to high-level users to ensure the normal supply of water.