How is a hydraulic amplifier constructed

Hydraulic pressure intensifiers


Pressure intensifiers in hydraulic systems

In leading industrial countries such as Germany, USA and Japan, the use of pressure boosters in hydraulic systems saves costs, space and weight.
MiniBOOSTER Hydraulics A / S has specialized in the production of the hydraulic pressure booster, miniBOOSTER.
No less than 95% of the production is destined for export. The pressure booster is used in a large number of different applications in machines and systems.

The high pressure

In hydraulic systems it is often necessary to be able to generate different operating pressures. A perfectly functioning system with a high degree of efficiency can only be achieved by precisely adjusting the pressure to the current load.

In systems, the majority of the liquid flow from the pumping station often runs through a pressure relief valve that is set to an unnecessarily high pressure. This is due to the fact that high pressure is built up selectively in the cycle of the associated machine. Such systems have a very low efficiency, and the built-in components are exposed to great wear, because the pressure drop causes a high surface pressure between the moving parts.

In order to counteract this problem, a system consisting of several pumps is usually set up, in which the volume flow output depends on the existing operating pressure. In the case of a larger system, the pump may have a variable displacement, the regulator of which is suitable for operation under different operating pressures.

On many machines, however, the high pressure is only necessary for very short intervals in the machine cycle, such as in compressing machines. In these machines, a large part of the energy is used to move tools, formwork plates or pressing plates, and only a small part is used for the actual pressing process, because this does not result in movement, but only a compression of the oil in the cylinder.

Pressure intensifiers offer different advantages

By using pressure intensifiers, the designer has more leeway with regard to the operating pressure. The hydraulic load is distributed more evenly over the entire cycle of the machine. The pressure booster only switches on when there is a need for high pressure. The rest of the time it is passive and has no internal consumption and therefore has no influence on the efficiency of the system.
The use of the pressure intensifier provides a number of advantages over conventional high and low pressure systems.

  • Higher efficiency and longer service life due to the lower operating pressure
  • Compact system
  • Increased safety by reducing the high pressure system
  • Integrated valves
  • No dynamic seals
  • Boost ratio adapted to current needs

Application examples

Since the pressure booster was established on the market, it has been used in a variety of systems. The following list shows a small selection of the diversity of the system and its typical areas of application:

  • Hydraulic clamping tools
  • Maintenance equipment for railways
  • Injection molding machines: clamping of mold parts, core pulling
  • Various types of hydraulic tools, e.g .: cutting, brushing and clamping tools,
  • Torque wrench, bolt stretcher, etc.
  • Rotary couplings for lathes
  • Test equipment up to 3,000 bar
  • Fork turner on bogies
  • Concrete shears
  • Offshore: Wellhead control panels (WCW, MCW, SSSV), blowout preventors
  • Hydraulic tools on remote-controlled underwater vehicles (R.O.V.)
  • Aggregates
  • Filter presses

Great variety of products

miniBOOSTER Hydraulics A / S offers a variety of hydraulic pressure boosters that are used today in a wide variety of applications around the world.
A pressure of up to 2000 bar (higher pressures on request) can be achieved from all low-pressure hydraulic units, e.g. the hydraulic system on a processing machine or a vehicle.
The miniBOOSTER´âö is supplied with up to 11 different amplifier ratios, device type.

The compact design of the miniBOOSTER enables it to be installed precisely at the point where high pressure is required. It requires a minimum of space and is easy to install in both existing and new systems.
Lower system pressures mean reduced energy consumption and thus lower production costs.