Abstract:
PURPOSE:To prevent a damage of bladder by a method wherein a projecting seat coupled to a poppet valve is sucked and held by a magnetic force at the bottom part of the bladder. CONSTITUTION:When a magnetic sucking means 27 introduces liquid into a main body 9 of a container to shrink a bladder 10, a projecting seat 17 approaches to a holding lever 19, resulting in that magnets (m), (m) or magnet (m) and magnetic material (m') are attracted to each other to cause the projecting seat 17 to be held by a holding lever 19. When a magnetic force is set at a value higher than a tension force applied to a poppet valve 13 by liquid discharged at a flow rate of about 3l/sec from the supplying and discharging port 12, the bladder 10 holds its reduced condition during its discharging operation and then a smooth liquid discharging operation is performed. However, if the volume of liquid in the main body 9 of the container is reduced due to liquid discharging, the bladder 10 is extended under a gas pressure filled. The extending force is higher than a sucking force of a magnetic sucking means 27, so that the poppet valve 13 descends down to the supplying and discharging port 12, is contacted with the valve seat 14 to close the supplying and discharging port 12, then the bottom part of the bladder 10 is closely contacted with the inner bottom surface of the main body 9 of the container.
Abstract:
A pressure accumulator comprises an accumulator housing (2) in which a movable separating element (30) fluid-tightly separates a gas chamber (16) filled with a working gas from a fluid chamber (28). The pressure accumulator is characterized in that a monitoring device (50, 54) is provided which supplies an optical signal in the event of a malfunction affecting the sealing effect of the separating element (30).
Abstract:
Disclosed is an expansion tank having an internal cavity separated by a flexible diaphragm to form an upper pressurized gas portion and a lower pressurized fluid portion, and an indicator positioned at an upper part of the expansion tank in communication with the contents of the upper pressurized gas portion. The indicator is configured so as to display a first color if the operating conditions are normal in the pressurized gas portion, and a second color if the amount of moisture detected in the pressurized gas portion greater than or equal to a predetermined amount. Further disclosed is a method for detecting whether there is an excessive amount of moisture in a pressurized gas portion of an expansion tank by allowing pressurized gas from the pressurized gas portion to come into contact with the indicator, and viewing the color displayed by the indicator. As such, the tank can be simply visually inspected to determine whether there is a potential failure in the tank.
Abstract:
A system and method for controlling an accumulator for use with a hydraulic circuit is provided. The system and method is configured to determine a set of accumulator temperature indicators and discharge and charge the accumulator as a function of the set of accumulator temperature indicators.