Agitating – Having specified feed means – Liquid injector within mixing chamber
Reexamination Certificate
1998-05-27
2001-01-09
Cooley, Charles E. (Department: 1723)
Agitating
Having specified feed means
Liquid injector within mixing chamber
C366S174100
Reexamination Certificate
active
06170979
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field of the Invention
This invention relates to fluid injection and monitoring apparatus for the introduction of one or more fluid additives to a gaseous or liquid stream and for monitoring the stream.
2. Description of the Prior Art
In for example the oil extraction industry, it is known practice to inject additives into a gas or liquid stream in a pipe line to accomplish “conditioning” of the oil, adding various chemicals to enhance desired properties or counteract undesired properties. At present, the usual practice is to inject the additive through a branch pipe opening radially or tangentially into the main pipe line. This however creates a weakness in the pipe line string which is eroded by the high-fluid flow rates in the main pipe line, leading to possible catastrophic failure. In an alternative, a branch pipe line terminates in a probe or projecting tube fed by a branch pipe, the probe extending some distance into the main pipe line flow passage to discharge the additive into the main flow. An example of such an arrangement is shown in GB 1,601,403, where a radially extending probe introduces an additive into a fluid stream, upstream with respect to a static mixer. Such a probe is again vulnerable to erosion leading to failure.
It is also known from GB 2015360-A to provide an injector in mixing a apparatus, comprising a diametrically extending tube extending across a flow passage, with discharge orifices directed to the downstream side of the tube, to introduce the additive in the lee of the tube. The discharge orifices are arranged in two sets, each set discharging into one of a pair of split fluid streams, and this arrangement is disclosed only as part of a static mixing apparatus.
It is also desirable to be able to monitor the condition of the fluid stream to, for example, control the introduction of additives in response to stream conditions.
SUMMARY OF THE INVENTION
An object of this invention is to provide a device for injection of one or more additives into a fluid stream particularly, but not exclusively in oil and/or gas pipe lines which will enable such additives to be introduced without providing a point of weakness in the pipe line.
In accordance with the invention an injection apparatus for introduction of one or more additives to a gaseous or liquid stream comprises at least one diametrically extending pipe member including a conduit and discharge orifices for discharge of the, or each, additive into said stream.
The diametrically extending pipe members are preferably coplanar, and arranged as radial spokes across an orifice which matches the main pipe cross-section, provided in a circular wheel-like arrangement in a plate-like member.
Such wheel-like or plate-like member can in use be inserted between the junction flanges of adjacent pipe-sections, the flanges being jacked apart for insertion of the member, and then clamped to provide a seal about the member.
The device may have a separate inlet duct, connectable to a respective feed line, for each of the additives to be introduced at that point. Each additive may be supplied via a respective radial or diametrical extending pipe member, so that a cruciform arrangement of pipe members may either provide two diametrical manifolds, one diametrical and two radial manifolds, or four radial manifolds, for two, three, or four additives respectively.
The device may also provide for monitoring of the condition of the fluid stream, by provision of appropriate sensors, such as a temperature probe, on or in the device.
The obstruction provided by the structure of diametrical or radial pipe members will create turbulence on its downstream side, which will aid mixing of the additives with the main fluid stream,
Three-arm or six arm or more structures are within the scope of the invention.
REFERENCES:
patent: 4114195 (1978-09-01), Dirksing et al.
patent: 4564298 (1986-01-01), Gritters et al.
patent: 4573803 (1986-03-01), Gritters
patent: 4586825 (1986-05-01), Hayatdavoudi
patent: 4838703 (1989-06-01), McMaster et al.
patent: 4976547 (1990-12-01), Hisanaga et al.
patent: 5388906 (1995-02-01), Rao
patent: 5478150 (1995-12-01), Keller et al.
patent: 5518700 (1996-05-01), Ayoub et al.
patent: 5556200 (1996-09-01), Ekholm et al.
patent: 5816700 (1998-10-01), Starke, Sr. et al.
patent: 1457272 (1969-02-01), None
patent: 0761298 (1997-03-01), None
patent: 2006033 (1979-05-01), None
patent: 2015360 (1979-09-01), None
patent: 1601403 (1981-10-01), None
patent: 2319734 (1998-06-01), None
patent: 9512452 (1995-05-01), None
Cooley Charles E.
Schindler Edwin D.
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