Abstract:
The present invention refers to a reciprocating compressor provided with an arrangement of suction valves and, more particularly, a reciprocating compressor which, capable of operating with at least two suction lines having different working pressures, is made up of an arrangement of valves comprising at least two "orifice valve" sets. One of these sets provides a semi- commanded valve, whereas the other set provides an automatic valve. The core of the invention is related to the fact that said "orifice valve" sets are disposed on different components of the reciprocating compressor.
Abstract:
The present invention relates to a booster pump for transferring a high-viscosity liquid. The booster pump for transferring a high-viscosity liquid according to the present invention comprises: a body, which has an actuator mounted on one side, a discharge valve formed on the other side, and a chamber formed therein; a plunger, which is inserted inside the body and generates compression and suction forces by being moved forward and backward by the operation of the actuator; and a filling valve, which is formed on one side of the body and supplies or blocks a fluid into the body by being opened/closed in connection with the forward and backward operation of the plunger, wherein the chamber of the body has a filled liquid transfer path spirally formed on the inner circumferential surface thereof, and the exit of the filled liquid transfer path is formed in proximity to the discharge valve.
Abstract:
Disclosed are systems and methods utilizing multiple parallel pumps to deliver a mixture of the proppant and clean fluid via a manifold trailer. One method of providing a step-change in proppant concentration includes selecting a first flow rate for a first pump connected between a first input node and first output node, calculating a first transit time for a flow of a fluid at the first flow rate through a first flow path extending from the first inlet node, through the first pump, and to the first outlet node, and calculating a second flow rate for a second pump connected between the first input node and the first output node such that a second transit time for a flow of the fluid through a second flow path extending from the first inlet node, through the second pump, and to the first outlet node is equal to the first transit time.
Abstract:
A positive displacement fluid pump with increased service life is described. The positive displacement pump includes a plunger, a suction bore and a discharge bore. The plunger, the suction bore and the discharge bore form a pumping chamber. The diameter of the suction bore is greater than the diameter of the discharge bore. The difference in the diameters of the suction bore and the discharge bore allows for less fluid to be discharged through the discharge valve than what is being put into the bore through the suction valve and helps in increasing the service life of the pump. A method of operation of such a positive displacement pump is also provided.
Abstract:
Bei dynamisch beanspruchten Bauteilen, insbesondere Hydraulikzylindern, die mindestens eine Schweißnaht aufweisen, kann mit der Zeit eine Ermüdung der Schweißnaht und ein damit einhergehender Festigkeitsverlust auftreten, insbesondere dann, wenn die Wurzel der Schweißnaht stark belastet wird. Häufige Ursache für Materialversagen sind z.B. Haarrisse im Bereich der Wurzel. Um die Festigkeit von rotationssymmetrischen, geschweißten Bauteilen zu verbessern, wird vorgeschlagen, dass an einem ersten Teil (2; 4) und/oder an einem zweiten Teil (3; 5) des Bauteils, die über die Schweißnaht (10) miteinander verbunden sind, in einem an die Schweißnaht (10) angrenzenden Bereich ein verschmälerter Steg (7) ausgebildet wird, wobei die Wandstärke (t 1 , t 2 ) des ersten bzw. zweiten Teils (2;4, 3;5) im Bereich des verschmälerten Stegs (7) kleiner ist als die Tiefe (t s ) der Schweißnaht (10). Hierdurch kann der Kraftfluss wenigstens zum Teil an der Wurzel (11) vorbeigeführt werden, so dass die Schweißverbindung (10) weniger stark beansprucht wird.
Abstract:
A piston assembly (12) comprising a reciprocating sleeve (14) incorporating an integral internal piston surface (28), which sleeve is slidably mounted upon a cylinder head (18) so as to define a piston chamber (26) therewith, the piston chamber being sealed in the vicinity of the cylinder head (18) by a circumferential static seal (20) that acts to seal against the reciprocating sleeve (14). The static seal (20) may occupy a horizontal plane and may include sacrificial wear zones and be formed from a graphite-based material. The piston assembly may be an oversquare assembly for use in an oil-free environment for processing high temperature gases, for example, a hot gas engine or heat pump or heat engine such as may be used in an energy storage system.
Abstract:
La presente invención describe una bomba de pistón que dispone de una configuración que le permite evitar fugas del fluido con el que se trabaja, la cual está formada por un cuerpo constituido por una sola pieza monobloque, la cual se une a la brida de la bomba, permitiendo su acoplamiento de forma idéntica a los equipos donde de realiza su uso habitual, y manteniendo completamente alineado el eje del pistón, con la junta de estanqueidad de la brida de la bomba, creando un sistema antipérdidas de bombas de pistón.
Abstract:
A pump head (14) for a high-pressure fuel pump is disclosed. The pump head comprises a head housing including a body portion (24), and a turret portion (30) extending from the body portion (24), a pumping chamber (36) defined within the body portion (24), a pumping element bore (34) for receiving a pumping element (32) in use, the pumping element bore (34) extending from the pumping chamber (36) and through the turret portion (30), and a leakage return passage (74). The pump head (14) further comprises a sleeve (70) arranged around the turret portion (70) to define a leakage flow path (72) to allow fuel flow from the pumping element bore (34) to the leakage return passage (74). The pump head is suitable for use in a fuel pump of the type in which a cam drive arrangement of the pump is lubricated by engine oil, since contamination of the engine oil with fuel can be minimised.
Abstract:
A sealing system for a high pressure pump, in which the pump includes a vessel defining a vessel bore and having an end portion, the vessel bore having a first engagement face and defining a central longitudinal axis, and in which the pump further includes a plunger cooperative with the vessel to increase the pressure of a fluid within the bore, includes a seal member at least partially received within the bore and defining a second engagement face. The sealing system further includes a retaining member in operative contact with the seal member to mate the first engagement face with the second engagement face to inhibit fluid leakage from the bore. The first engagement face includes a first contacting surface having a non-linear cross-section. The second engagement face includes a second contacting surface having a non-linear cross-section in contact with the first contacting surface.