阅读说明：本技术 用于泵送流体的泵系统和泵系统运行方法 (Pump system for pumping a fluid and method for operating a pump system ) 是由 R·施泰因格雷伯 于 2019-08-16 设计创作，主要内容包括：本发明涉及一种用于泵送流体的泵系统以及一种泵系统运行方法。该泵系统包括第一隔膜流体泵、与第一隔膜流体泵相连的用于将流体输入至第一隔膜流体泵的第一入口插管以及与第一隔膜流体泵相连的用于从第一隔膜流体泵排出流体的第一出口插管、通过第一压力管线连接至第一隔膜流体泵的且设立用于通过第一压力管线驱动第一隔膜流体泵的第一工作泵。该泵系统还包括用于测知第一入口插管内的流体的第一入口流的第一入口流传感器和/或用于测知在第一出口插管内的流体的第一出口流的第一出口流传感器。(The present invention relates to a pump system for pumping a fluid and a method of operating a pump system. The pump system comprises a first diaphragm fluid pump, a first inlet cannula connected to the first diaphragm fluid pump for feeding fluid to the first diaphragm fluid pump and a first outlet cannula connected to the first diaphragm fluid pump for discharging fluid from the first diaphragm fluid pump, a first working pump connected to the first diaphragm fluid pump by a first pressure line and set up for driving the first diaphragm fluid pump by the first pressure line. The pump system further comprises a first inlet flow sensor for sensing a first inlet flow of the fluid within the first inlet cannula and/or a first outlet flow sensor for sensing a first outlet flow of the fluid within the first outlet cannula.)

1. A pump system for pumping a fluid, wherein the pump system comprises:

a first diaphragm fluid pump for a first diaphragm fluid pump,

a first inlet cannula connected to the first diaphragm fluid pump for feeding fluid to the first diaphragm fluid pump and a first outlet cannula connected to the first diaphragm fluid pump for discharging fluid from the first diaphragm fluid pump,

a first working pump which is connected to the first diaphragm fluid pump via a first pressure line and which is set up for driving the first diaphragm fluid pump via the first pressure line,

characterized in that a first inlet flow sensor for sensing a first inlet flow of the fluid within the first inlet cannula and/or a first outlet flow sensor for sensing a first outlet flow of the fluid within the first outlet cannula are provided.

2. Pump system according to claim 1, characterized in that a control unit is provided for controlling the first working pump on the basis of the measured first inlet flow and/or first outlet flow, in particular to reach a set value for the first inlet flow and/or first outlet flow.

3. A pump system according to claim 2, characterized in that the set-points for the first inlet flow and/or the first outlet flow comprise set-points for a time average or time characteristic of the first inlet flow and/or the first outlet flow.

4. Pump system according to claim 2, characterized in that the control unit is set up for determining, on the basis of the first inlet flow and/or the first outlet flow measured, a set value for the average pressure prevailing in the first pressure line, a set value for the pressure amplitude prevailing in the first pressure line, a set value for the pump speed of the first working pump, a set value for the relative emptying time, a set value for the filling time, a set value for the emptying pressure prevailing in the first pressure line and/or a set value for the filling pressure prevailing in the first pressure line, and in dependence on the set value for the average pressure, the set value for the pressure amplitude, the set value for the pump speed, the set value for the relative emptying time, the set value for the filling time, The set point for the emptying pressure and/or the set point for the filling pressure controls the first working pump so as to substantially reach a predetermined first inlet flow and/or first outlet flow.

5. A pump system according to claim 2, characterised in that the working pump comprises a working piston which is oscillatably movable in a working chamber and a balancing valve for changing the mass of the working fluid in the working chamber and/or the pressure in the working chamber, wherein the working chamber is in pressure exchange communication with the first pressure line, and the control unit is set up for determining, on the basis of the measured first inlet flow and/or first outlet flow, a set value for the mean pressure in the working chamber, a set value for the pressure amplitude in the working chamber, a set value for the pump speed, a set value for the stroke of the working piston, a set value for the force of the working piston, a set value for the relative emptying time, a set value for the filling time, a set value for the emptying pressure and/or a set value for the filling pressure in the working chamber, and controlling the movement of the working piston and the balancing valve in dependence on the set value of the mean pressure, the set value of the pressure amplitude, the set value of the pump speed, the set value of the stroke, the set value of the force, the set value of the relative emptying time, the set value of the filling time, the set value of the emptying pressure and/or the set value of the filling pressure, so as to substantially achieve a predetermined first inlet flow and/or first outlet flow.

6. Pump system according to claim 5, characterized in that the control unit is set up for determining a position setpoint for the working piston on the basis of a setpoint for the mean pressure, a setpoint for the pressure amplitude, a setpoint for the pump speed, a setpoint for the stroke, a setpoint for the force, a setpoint for the relative emptying time, a setpoint for the filling time, a setpoint for the emptying pressure and/or a setpoint for the filling pressure, and controlling the movement of the working piston in dependence on the position set-point and the balancing valve in dependence on the set-point for the mean pressure, so as to substantially reach said set value of mean pressure, set value of pressure amplitude, set value of pump speed, set value of stroke, set value of force, set value of relative emptying time, set value of filling time, set value of emptying pressure and/or set value of filling pressure.

7. A pump system according to claim 5, characterized in that the control unit is set up to determine a pressure set-point for the working chamber and a set-point for the turning position of the working piston on the basis of the set-point for the mean pressure, the set-point for the pressure amplitude, the set-point for the pump speed, the set-point for the stroke, the set-point for the force, the set-point for the relative emptying time, the set-point for the filling time, the set-point for the emptying pressure and/or the set-point for the filling pressure, and to control the movement of the working piston in accordance with the pressure set-point and to control the balancing valve in accordance with the set-point for the turning position, so as to substantially reach the set-point for the mean pressure, the set-point for the pressure amplitude, the set-point for the pump speed, the set-point, A set value for the force, a set value for the relative emptying time, a set value for the filling time, a set value for the emptying pressure and/or a set value for the filling pressure.

8. A pump system according to claim 7, characterized in that the working piston can be driven by means of a spindle motor.

9. A pump system according to claim 2, characterised in that the first working pump comprises a closed pneumatic circuit in which a compressor, a underpressure reservoir, a working pump valve and an overpressure reservoir are arranged in series, wherein the working pump valve can be controlled such that underpressure prevailing in the underpressure reservoir and overpressure prevailing in the overpressure reservoir are transmitted alternately to the first pressure line via the working pump valve, and the control unit is set up to determine, on the basis of the first inlet flow and/or the first outlet flow measured, a set value for the mean pressure in the working chamber, a set value for the pressure amplitude in the working chamber, a set value for the pump speed, a set value for the relative emptying time, a set value for the filling time, a set value for the emptying pressure and/or a set value for the filling pressure in the working chamber And controlling the working pump valve in dependence on the set point for the mean pressure, the set point for the pressure amplitude, the set point for the pump speed, the set point for the relative emptying time, the set point for the filling time, the set point for the emptying pressure and/or the set point for the filling pressure, so as to substantially achieve a predetermined first inlet flow and/or first outlet flow.

10. Pump system according to claim 9, characterized in that the control unit is set up for determining a pressure set-point for the pressure line on the basis of the set-point for the mean pressure, the set-point for the pressure amplitude, the set-point for the pump speed, the set-point for the relative emptying time, the set-point for the filling time, the set-point for the emptying pressure and/or the set-point for the filling pressure and for controlling the working pump valve in accordance with the pressure set-point in order to substantially reach the set-point for the mean pressure, the set-point for the pressure amplitude, the set-point for the pump speed, the set-point for the relative emptying time, the set-point for the filling time, the set-point for the emptying pressure and/or the set-point for the filling pressure.

11. Pump system according to claim 9 or 10, characterized in that the working pump valves, through which the working fluid flows in the transmission of overpressure and underpressure, are two-position three-way valves, continuous valves and/or proportional valves, wherein the volume flow of the working fluid can be adjusted in the working pump valves.

12. A pump system according to any one of claims 2-11, characterized in that:

a second diaphragm fluid pump for a second diaphragm fluid pump,

a second inlet cannula connected to the second diaphragm fluid pump for feeding fluid to the second diaphragm fluid pump and a second outlet cannula connected to the second diaphragm fluid pump for discharging fluid from the second diaphragm fluid pump,

a second working pump which is connected to the second diaphragm fluid pump via a second pressure line and which is set up for driving the second diaphragm fluid pump via the second pressure line, and

a second inlet flow sensor for sensing a second inlet flow within the second inlet cannula and/or a second outlet flow sensor for sensing a second outlet flow within the second outlet cannula,

wherein the control unit is set up for controlling the first working pump and/or the second working pump on the basis of the first inlet flow and/or the second inlet flow and/or the first outlet flow and/or the second outlet flow measured.

13. A pump system according to any one of the preceding claims, characterized in that the first inlet flow sensor and/or the second inlet flow sensor and/or the first outlet flow sensor and/or the second outlet flow sensor comprises an ultrasonic sensor.

14. A heart assist system comprising a pump system according to any of the preceding claims for pumping blood, wherein the first and/or second inlet cannula is fluidly connectable to a ventricle and/or atrium and/or a blood vessel of a heart and the first and/or second outlet cannula is fluidly connectable to a blood vessel.

15. Method for operating a pump system according to one of claims 1 to 13, characterized in that the first working pump and/or the second working pump are controlled on the basis of the first inlet flow and/or the second inlet flow and/or the first outlet flow and/or the second outlet flow measured.