Abstract: A method and a high-pressure system for determining a flow control variable of a fluid flow flowing through a high-pressure-side high-pressure pump outlet of a high-pressure pump are provided. An externally arranged ultrasonic measuring device measures a flow speed of a fluid flow flowing through a pipe of the high-pressure-side high-pressure pump outlet. A use of an ultrasonic measuring device is provided for determining a flow value to be achieved of a fluid flow flowing through a thick-walled pipe. The ultrasonic measuring device is arranged on the outside on the thick-walled pipe of the high-pressure pump outlet. The pipe has a ratio of the internal diameter to the external diameter of 1:1.5 to 1:5. The ultrasonic measuring device dynamically measures the flow speed of the fluid flow and transmits this measured flow speed to an evaluation unit to compute a current flow value and the flow control variable.

Abstract: A method and a high-pressure system for determining a flow control variable of a fluid flow flowing through a high-pressure-side high-pressure pump outlet of a high-pressure pump are provided. An externally arranged ultrasonic measuring device measures a flow speed of a fluid flow flowing through a pipe of the high-pressure-side high-pressure pump outlet. A use of an ultrasonic measuring device is provided for determining a flow value to be achieved of a fluid flow flowing through a thick-walled pipe. The ultrasonic measuring device is arranged on the outside on the thick-walled pipe of the high-pressure pump outlet. The pipe has a ratio of the internal diameter to the external diameter of 1:1.5 to 1:5. The ultrasonic measuring device dynamically measures the flow speed of the fluid flow and transmits this measured flow speed to an evaluation unit to compute a current flow value and the flow control variable.

Abstract: The invention relates to a support ring arrangement for a high-pressure seal which is provided, along with said support ring arrangement, for an axially slidable or pivotable container closure ( ) mounted in a cylindrical section of a high-pressure container, said high-pressure seal radially sealing the cylindrical section of the high pressure container with the aid of said support ring arrangement, and a maximum pressure of up to 10,000 bar being exerted, by means of a fluid, onto said support ring arrangement and high-pressure seal.

Abstract: The invention relates to a support ring arrangement for a high-pressure seal which is provided, along with said support ring arrangement, for an axially slidable or pivotable container closure ( ) mounted in a cylindrical section of a high-pressure container, said high-pressure seal radially sealing the cylindrical section of the high pressure container with the aid of said support ring arrangement, and a maximum pressure of up to 10,000 bar being exerted, by means of a fluid, onto said support ring arrangement and high-pressure seal.

Abstract: The invention relates to a method for suspending and introducing solid matter in a high-pressure process, for example colorant pigments in a high-pressure process, in which a supercritical fluid is used as the process medium and a pressure in excess of 150 bar prevails. According to the invention, the suspension of the solid matter takes place at a low-pressure in a completely separate suspension method. In the latter, the solid matter is suspended or partially dissolved in a non-critical, liquid gas. The pressure in said suspension method is less than 90% of the critical pressure of the liquid gas. The suspension is introduced into the high-pressure process by means of a pump.