Abstract:
Device for internal coating of pipes, with two sizing-crapers (40) (41) applied to the inner wall, which can be moved through the pipe (10), with an intermediate space (42) between the scrapers (40, 41) for receiving the coating material (16). A radially-directed atomized spray device (70) (71) is linked with the intermediate space by means of a material feed-line (60). During drawing through the pipe (10), the coating material (16) is fed to the spray device (70) (71) which atomizes the material (16) and applies it to the inner surface (11) of the pipe (10).
Abstract:
The device consists of a mastic material-filled pipe (27) set in a cylinder (24) which is revolvable around its longitudinal axis and secured there against displacement by means of locks (30). Inside the pipe (27) is a piston (31), which is acted upon by a conduit (33) with compressed air. On the free end of the pipe is a mastic device (41) which is locked to the pipe. The piston (31) forces the material out of the pipe into the mastic device, which is revolvable together with the pipe around longitudinal axis thereof. Once the mastic device (41) has been fully emptied, it is removed from the pipe (27) and the latter is separated from the cylinder (24). The empty pipe is replaced by a full pipe and the mastic device is again attached to the latter. In this way the device is again ready for use within a short time.
Abstract:
A portable delivery system for delivering a multiple part coating composition for in situ coating an internal pipeline surface comprises a housing including a controller, at least two composition containers, a first hose, a hose delivery system, a pump, and at least two mass flow meters. The composition containers contain differing compositions, and each container includes a composition depth monitoring apparatus. The first hose comprises at least two additional hoses, where two of the additional hoses each deliver one of the compositions to a composition applicator. The hose delivery system stores and delivers the first hose to the pipeline, and the pump is coupled to the composition containers and the first hose. The mass flow meters are each coupled to a pump outlet corresponding to an outlet of the respective first or second composition container.
Abstract:
A planetary gear retrieval system for pulling a sled at a constant velocity along an interior of a pipe, and a sled for applying a coating material to the interior of the large-diameter pipe. The planetary gear retrieval system is connected to the sled via a chain, and has a network of gears controlled by a first variable speed microcontroller. A spinner on a linear oscillating plate provided on the sled is controlled by a second variable speed microcontroller. The first and second microcontrollers are programmable to be synchronized with one another so as to pull the sled at a desired constant rate and achieve a desired number of passes of the spinner along a given length of pipe while the sled is pulled at the desired rate.
Abstract:
Uma capa de árvore de natal molhada (1) ou um módulo de conexão (26) ou um conjunto de linhas de fluxo submarinas ou um riser (27) são conectados e integrados com sistemas despressurização residentes, que viabilizam a produção de petróleo, reduzindo significativamente perdas de produção resultantes de bloqueio por hidrato. Em caso de paradas de produção, previstas e não previstas, é possível despressurizar preventivamente equipamentos e linhas submarinas, com a finalidade de prevenir a formação ou mesmo remover hidratos, que tenham se formado. A operação é remota, a partir de uma unidade de produção (11), não requerendo o uso de barco ou Sonda. É aplicável tanto em projetos de campos novos como em campos maduros.
Abstract:
The invention relates to a device for coating the inside surface of metal pipes with a thermoplastic coating, including an extrusion press machine and a multi-purpose nozzle. In order to reduce the material and labor expenditure during the production of the coating and to improve the accuracy and properties of the coating, the device is designed such that the multi-purpose nozzle comprises a feed channel and is provided with a distribution head and an attachment piece, the distribution head can be exchanged with the attachment piece, the design makes it possible to coat metal pipes with different lengths, different inside diameters, and different coating thicknesses, wherein the length of the pipes is only limited by the length of the feed channel, the distribution head is provided with a bore hole connected to the feed channel, the feed channel is designed in the shape of a rod having an axial bore hole and contains at least four tubular heating elements disposed in receiving grooves of the rod, and the outside surface of the attachment piece is pretreated at least to roughness class 7 in order to achieve a smooth coating surface. The method for producing the coating is characterized in that, prior to pressing in the thermoplastic material, the feed channel is heated by way of tubular heating elements installed in the channel up to a temperature that is 20 to 30ºC higher than the temperature at which the thermoplastic material is viscous, cooling fluid or cooling water is delivered under pressure from the water line into the hollow space of an attachment piece in order to cool the walls and maintain the temperature of the attachment piece at a maximum of 40ºC, and to achieve the hardening of the coating and production of a uniform structure of the coating and firm adhesion to the metal pipe.
Abstract:
An exemplary embodiment provides a form for providing a lining in a pipe. The form includes a body having a leading part and a trailing part, a hole in a leading side of the leading part and a channel in the body communicating with the hole. The body has a diameter at the leading part that is similar to the inner diameter of the pipe to be lined and greater than the diameter at the trailing part. The channel has at least one peripheral opening positioned rearwardly of the leading part of the form at a position to discharge lining material from the channel around the trailing part of the form and onto the interior surface of the pipe. The form is preferably provided with an attachment on the leading side for a tube supplying flowable settable lining material to and through the hole. Another embodiment relates to a method of producing a lining in a pipe which comprises supplying flowable settable lining material to the form while pulling the form through the pipe.
Abstract:
The invention relates to methods for forming at least one metal oxide on one or more interior surfaces of closed or partially closed fluid transport or processing systems. The method involves applying at least one metal compound to the interior surfaces to be treated using, for example, one or more traveling applicators, commonly known as "pigs." Then, the at least one metal compound is converted to at least one metal oxide, such as by heating the surfaces. In some embodiments, the at least one metal oxide provides a protective metal oxide coating adhered to those surfaces. Embodiments of the present invention can be performed in situ on existing fluid processing or transport systems.
Abstract:
The present invention relates to the coating of tubes, and more particularly to a system and method for renovating deteriorated or pitted tubes to extend tube life and enhance performance. Using this system and method a thin coating is applied to the interior of a tube such that the coating is uniform in thickness, spans existing erosion elements or cracks within the inner surface of the tube and covers all regions of the tube.
Abstract:
The invention relates to a tool (8) for coating the inside of tubes with a protective material and designed to be arranged at one end of a supply line (6) having a discharge orifice for coating material as well as to be connected to a rotary movement generating means (7, 12). The tool comprises at least one rotatable means (17), provided adjacent to the discharge orifice and provided with, e.g., chains (18), to provide a distribution of the protective coating material fed out onto the tube wall as the rotatable means (17) rotates. It also has at least one rotatably arranged guiding means (9), which, depending on the direction of rotation, guides the tool (8) in a desired direction, as it is moved within a tube. The invention also relates to a rotatable brush for use as a guiding means with such a tool (8). Finally, the invention relates to an apparatus for coating the inside of a tube, comprising a pump (34) for pumping coating material from a container (14) and through a coating material supply line (6), a wire or flexible shaft (7) connected to a tool (8).