Method and system for monitoring a hydraulic system of a comminution apparatus
The present disclosure relates to a monitoring system for a hydraulic system in a comminution apparatus including at least one pressurized accumulator. The monitoring system includes at least one pressure sensor and a control unit, wherein the pressure sensor is connected to the control unit. The pressure sensor is arranged to measure a pressure in the at least one accumulator and the control unit is configured to determine that a pressure in the accumulator is outside of a predefined range. The control unit is further configured to control a pressure regulating system that is arranged to restore the pressure in the pressurized accumulator.
1. A monitoring system for a hydraulic system in a comminution apparatus including at least one pressurized accumulator, wherein the pressurized accumulator comprises a first chamber containing hydraulic liquid and a second chamber containing a pressurized gas, wherein said monitoring system comprises at least one pressure sensor and a control unit, wherein said pressure sensor is connected to said control unit, said pressure sensor being arranged to measure a pressure in said at least one accumulator and wherein the control unit is configured to determine that a pressure in said accumulator is outside of a predefined range and wherein the control unit is further configured to control a pressure regulating system arranged to restore the pressure in the pressurized accumulator, wherein the pressure sensor is arranged to measure a gas pressure in said second chamber, wherein the second chamber of each accumulator is connected to a source of pressurized gas via a manifold block, and wherein the manifold block comprises solenoid valves.
2. The monitoring system in accordance with claim 1 , wherein the second chamber of each accumulator is connected to a source of pressurized gas.
3. The monitoring system in accordance with claim 1 , wherein the control unit is configured to continuously monitor the pressure in the accumulator.
4. The monitoring system in accordance with claim 3 , wherein the control unit is configured to control a pressure regulating system arranged to restore a pressure in said second chamber.
5. The monitoring system in accordance with claim 1 , wherein the control unit is configured to determine that a pressure in said second chamber is outside of a predefined range.
6. The monitoring system in accordance with claim 1 , wherein the gas comprises nitrogen.
7. The monitoring system in accordance with claim 1 , wherein the control unit is configured to determine the pressure in the at least one accumulator at pre-defined time intervals.
8. The monitoring system in accordance with claim 1 , wherein the control unit is configured to continuously determine the pressure in the at least one accumulator.
9. The monitoring system in accordance with claim 1 , wherein said control unit is configured to determine the occurrence of a tramp event based on information from said pressure sensor.
10. A method of monitoring a hydraulic system in a comminution apparatus having a monitoring system in accordance with claim 1 , said method comprising the steps of:
arranging a pressure sensor at an accumulator of a hydraulic system of said comminution apparatus;
transmitting output from said pressure sensor to a control unit; and
using said control unit to control a pressure regulating system arranged to restore the pressure.
11. The method in accordance with claim 10 , further comprising the step of:
based on said output, determining the occurrence of a tramp event.
12. The use of the monitoring system as claimed in claim 1 in a comminution apparatus.
13. A comminution apparatus including at least one pressurized accumulator comprising a first chamber containing hydraulic liquid and a second chamber containing a pressurized gas, said comminution apparatus comprising a monitoring system, wherein said monitoring system comprises at least one pressure sensor and a control unit, wherein said pressure sensor is connected to said control unit, said pressure sensor being arranged to measure a pressure in said at least one accumulator and wherein the control unit is configured to determine that a pressure in said accumulator is outside of a predefined range and wherein the control unit is further configured to control a pressure regulating system arranged to restore the pressure in the pressurized accumulator, wherein the pressure sensor is arranged to measure a gas pressure in said second chamber, wherein the second chamber of each accumulator is connected to a source of pressurized gas via a manifold block, and wherein the manifold block comprises solenoid valves.