Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for controlling a fluid pump, and a linear compressor provided with a means for correcting respective functions upon initial use or when a problem occurs due to an electric or mechanical failure.SOLUTION: A fluid pump 10 is provided with a piston position detecting assembly 11 and an electronic controller 16 for monitoring piston displacement in a cylinder by detecting an impact signal. The impact signal is transmitted by the detecting assembly 11 at a piston collision with a stroke end, and the electronic controller 16 successively increments a piston displacement stroke up to collision outbreak according to a trigger signal, and stores a maximum of the piston displacement.
Abstract:
A system includes a sensor and a controller for a refrigeration or HVAC system having a compressor. The sensor senses a temperature of the compressor during operation of the compressor. The controller is configured to determine a rate of change of the temperature relative to time and to perform one or more procedures to protect the compressor based on the rate of change of the temperature. The one or more procedures to protect the compressor include shutting down the compressor, throttling a pressure regulator valve of an evaporator associated with the compressor, adjusting an expansion valve associated with the evaporator, reducing speed of the compressor, and partially or wholly unloading the compressor.
Abstract:
A natural gas pumping system that includes a reciprocating compressor having at least two cylinders, a first conduit in fluid communication with an outlet of the first cylinder, a second conduit in fluid communication with an outlet of the second cylinder, and a junction in fluid communication with the first conduit and the second conduit.
Abstract:
The present invention relates to a system and to a method of controlling a fluid pump, as well as to a linear compressor and a cooler provided with means to calibrate the respective functioning at the time of the first use or in cases of problems caused by electric or mechanical failures. According to the teachings of the present invention, the fluid pump is provided with a piston-position sensing assembly, the electronic controller monitoring the piston displacement within the respective cylinder by detecting an impact signal. The impact signal is transmitted by the sensing assembly upon occurrence of a impact of the piston with the stroke end, the electronic controller successively incrementing the piston displacement stroke upon a trigger signal as far as the occurrence of the impact to store a maximum value of piston displacement.
Abstract:
A reciprocating pump assembly includes a pump housing that houses a crankshaft. Pistons are mechanically connected to the crankshaft for pumping fluid through cylinders. Each cylinder has a fluid inlet and a fluid outlet. The pump also has a monitoring housing connected to the reciprocating pump. Within the monitoring housing is a computer with memory. Pressure sensor assemblies sense a pressure value of a fluid within the pump, and are in electrical communication with the memory. An accelerometer positioned on the pump measures vibrations of the pump and is also in electrical communication with the memory for storage of sensed vibrations or displacements during operations. A proximity sensor in electrical communication with the memory is located within the pump housing to determine the rotational velocity of the crankshaft.
Abstract:
A method for determining the closing point of a pump piston relative to a transverse bore in a corresponding pump cylinder, the method including the steps of providing compressed air to the cylinder via the transverse bore, axially sliding the pump piston near the closing point, consecutively measuring two flow values through a throttle cross-section defined by the pump piston and transverse bore, measuring the positions of the piston corresponding to the two flow values and extrapolating the pump piston unto the closing point from the flow values and piston positions.
Abstract:
Die Erfindung betrifft ein Verfahren zur Klopfregelung bei einem Kolbenverdichter (1) sowie einen Kolbenverdichter (1), der dazu ausgebildet ist, das erfindungsgemäße Verfahren durchzuführen. Dabei ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, dass wenn ein Klopfgeräusch (100) durch ein Anschlagen eines Kolbens (10) des Kolbenverdichters (1) auf einen Zylinderkopf (12) mittels eines am Kolbenverdichter (1) angeordneten Körperschallsensors (2) erfasst wird, der Kolbenhub (16) des Kolbenverdichters (1) reduziert wird, oder wenn über einen vordefinierbaren Zeitraum kein Klopfgeräusch (100) erfasst wird, der Kolbenhub (16) vergrößert wird.
Abstract:
A system, apparatus, and method for improving performance of a pressurized system having a natural gas reciprocating compressor pump. The sound attenuation device has a pipe having an outlet connected to one or more tuned loops, where each loop includes a junction that divides a flow into two pipes. Another junction reconnects the two pipes to an outlet pipe, where the outlet pipe of the loops is coupled to the former junction of the loops. The loop has an inlet coupled to the outlet of a reciprocating compressor cylinder. Between the branches one of the branches is longer than another branch by an amount equal to a wavelength within a range of wavelengths of vibrations propagating in a fluid discharged from the reciprocating compressor pumping system.
Abstract:
The subject of the invention is a device for an automatic regulation of pump operation of a sensor microprocessor controller that optimally regulates the operation of a pump. The device of the invention solves the mentioned problems; by means of sensors, preferably of sound sensors, it solves regulation and also occurrence of undesired noises. An optimal operation of a system needs a microprocessor with a built-in operation algorithm, preferably with fuzzy logic. The operation and conditions are controlled by various sensors, such as temperature sensors, pressure sensors, sound sensors and other sensors of status change.