摘要:
A sensor unit for use in sensing conditions in a pipeline comprises an untethered ball-shaped sensor unit adapted to roll along the interior surface of a pipeline, and an instrument package within the ball-shaped sensor unit. The package contains at least one magnetometer or accelerometer. Preferably, three magnetometers, arranged orthogonally, are present. Other sensors can also be present as required, such as an acoustic sensor to detect leaks and a temperature or chemical sensor. Recording means record the data acquired by the magnetometer(s) or accelerometer and the sensors, and optionally also record a timing trace.
摘要:
The invention relates to methods for non-destructive testing technology field and used for increasing the efficiency of protecting the in-line inspection tool against explosion while the flaw detection in trunk gas pipelines. Method for the explosion protection of the in-line inspection tool consists in connecting of the instrument compartment power supply circuit of the in-line inspection tool to the power supply unit at the pressure guaranteeing the absence of the explosible gas mixture in the receiving trap, and also additionally monitor the instrument compartment power supply and execution by onboard computer. The system device for protecting the in-line inspection tool from the explosion provides the connection and disconnection of the instrument compartment power supply circuits at a pressure guaranteeing the absence of the explosible gas mixture in the launching (receiving) trap, and lets with the help of the signal acquirement from the low-frequency electromagnetic transmitter, located on the tool, monitor the execution of normal operation modes by the tool.
摘要:
A pig receiver (5) and method retrieve pigs in pipeline pigging operations. In one embodiment, a pig receiver (5) includes a pig receiver unit (10). The pig receiver also includes a pig gate valve assembly (20) disposed on the pig receiving unit (10). The pig gate valve assembly (20) includes a gate valve (25). The pig gate valve assembly also includes a first actuator (40) and a second actuator (45). The pig gate valve assembly further includes a cylinder guide (60). In addition, the pig gate valve assembly includes a tie bar (70). Actuation of the tie bar actuates the gate valve. An end of the tie bar is attached to the first actuator, and an opposing end of the tie bar is attached to the second actuator. The pig receiver also includes a system for removing contaminants (290) from the pig receiver.
摘要:
A pig receiver (5) and method retrieve pigs in pipeline pigging operations. In one embodiment, a pig receiver includes a pig receiver unit. The pig receiver also includes a pig gate valve assembly disposed on the pig receiving unit. The pig gate valve assembly includes a gate valve (25). The pig gate valve assembly also includes a first actuator (40) and a second actuator (45). The pig gate valve assembly further includes a cylinder guide (60). In addition, the pig gate valve assembly includes a tie bar (70). Actuation of the tie bar actuates the gate valve. An end of the tie bar (70) is attached to the first actuator (40), and an opposing end of the tie bar (70) is attached to the second actuator (45). The pig receiver also includes a pressure equalization system that adjusts the pressure downstream of the gate valve when the gate valve (25) is in a closed position.
摘要:
Disclosed is a maintenance device for an elongate, tubular hollow member (2) designed to conduct a fluid. Said maintenance device comprises a sealing mechanism (4) which is to seal a working zone (9) relative to surroundings (30) of the hollow member (2) and can be moved in one direction along the hollow member (2). A side of the sealing mechanism (4) that faces the hollow member (2) forms an at least partially curved surface and can be moved in the longitudinal direction of the hollow member (2), especially in order to be placed in the sealing position. A method for servicing an elongate, tubular hollow member (2) is also claimed.
摘要:
A liquid transport system has a number of access points (116), referred to generally as nodes, connected to an endless loop of piping (114) such that liquid flowing in the system, to move the liquid from one node to another, flows in two generally discrete paths from a source node to a destination node. In general, any node can be associated with either a liquid source (32) or a liquid destination (34). A source in a first liquid transfer can act as a destination in a subsequent liquid transfer, and vice versa. A single pigging system can be used to clean substantially the entirety of the liquid transport system among all sources and all destinations, except for leads from the nodes to the sources and/or destinations. The liquid transport system can be cleaned in place, thus to clean all of the piping which runs between the respective nodes in the liquid transport system.