Abstract:
Comprende una estructura modular formada por una sucesión de pantallas (1), cada una de las cuales incluye una base (4) que apoya en un suelo y un tabique frontal (5); donde el tabique frontal (5) separa una parte interior (11b) donde seencuentra la base (4) y la obra a proteger, y una parte exterior (11a) correspondiente con una cara del tabique frontal (5) contra el que impacta un flujo de arena transportado por el viento. La base (4) tiene en su cara inferior en contacto con el suelo, unas nervaduras longitudinales (10) que se clavan en el suelo como medios de retención y anclaje de la pantalla (1). Sobre una cara superior de la base (4) se deposita una masa de arena como medios adicionales para sujetar y estabilizar cada pantalla (1).
Abstract:
A method for detection of a fluid leak related to at least one piston machine (1), where the method includes: - attaching a pressure sensor (18, 24) to at least a pressure side of the at least one piston machine (1); - measuring the pressure on the pressure side of the at least one piston machine (1); - attaching a transmitter (28) to the at least one piston ma-chine (1), said transmitter (28) rendering a signal for cal-culating the rotational speed of the at least one piston ma-chine (1); - calculating the speed of the at least one piston machine (1); - calculating the sum of nominal flow rates from all piston machines(1); - calculating a flow rate compensation factor; - calculating a normalized pressure (42) to be equal to the discharge pressure multiplied by the said compensation factor for the flow rate; and - monitoring the normalized pressure (42) to detect a leak-age.
Abstract:
A high-pressure fuel pump, comprising a cylinder having a pressurizing chamber and a plunger inserted into the cylinder, wherein the plunger is reciprocated in axial direction by a lifter to pressurize the fuel inside the pressurizing chamber, a seal member surrounds the portion of the plunger projected from the cylinder, cuts out a cylinder side space surrounded by the seal member from a lifter side space on the outside of the seal member, and comprises an annular lip part in contact with the outer peripheral surface of the plunger, the annular lip part further comprises a pair of lips moving apart from each other in the axial direction of the plunger, and the axial distance between both lips is larger than the stroke of the plunger, whereby fuel does not invade into the lifter side space, and the lubricating oil lubricating the lifter does not invade into the cylinder side space.
Abstract:
A diaphragm failure monitoring system for detecting leakage in a diaphragm of a diaphragm pump. The system includes a pump (10) having an operating chamber (16) containing a working fluid (30) and a pumping chamber (14) for pumping material into and out of the pump and a diaphragm (18) separating the operating and pumping chambers. A first optic fiber (52) is joined to the operating chamber for transmitting an optic signal across the working fluid. A second optic fiber (60) is joined to the operating chamber for receiving the optic signal from the first optic fiber. An electric signal establishing device (56) establishes a fist electrical signal when the optic signal from the first optic fiber to the second optic fiber passes through uncontaminated working fluid. The electrical signal establishing device establishes a second electrical signal when the optic signal from the first optic fiber to the second optic fiber passes through contaminated working fluid, whereby leakage of a contaminating material through the diaphragm into the operating chamber can be detected when the second electrical signal is established.
Abstract:
A pump, in particular a plunger pump, has a pump head (5), a working chamber (2) and at least one displacement element (1) that oscillates in the direction of the longitudinal axis (L) of the pump inside the working chamber (2) and that projects out of the working chamber (2) through an opening. The displacement element (1) is sealed in relation to the pump head (5) by a gasket (7). In order to monitor packing wear, the displacement element (1) extends through a monitoring chamber (12) at the side of the gasket (7) away from the working chamber (2) of the pump. The monitoring chamber (12) contains a transfer medium and is connected to measurement apparatus (17, 19) for carrying out measurements on the transfer medium. Also disclosed is a wear measurement process for pumps of the above-mentioned type.