Measuring and testing – Engine detonation – Combustion signal compared to reference signal varied by a...
Patent
1980-11-28
1982-08-03
Gill, James J.
Measuring and testing
Engine detonation
Combustion signal compared to reference signal varied by a...
52 7911, G01L 2322, E04H 502
Patent
active
043422195
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to prefabricated buildings, in particular a prefabricated laboratory for use in the petroleum refining industry.
BACKGROUND ART
In the petroleum refining industry a need has arisen for a prefabricated laboratory housing an octane analyser unit and which can be transported to and placed on site with the minimum of site preparation. This is particularly so in the case of in-line gasoline blending operations where continuous monitoring of the octane rating of the gasoline being blended is necessary so that rapid adjustments can be made in the feed rates of the various components should the obtained octane number fluctuate from the desired value. Customarily octane ratings are monitored using a standard engine which is fed alternately with a reference fuel of known octane rating and the line gasoline. The knock intensities of the two fuels are evaluated and compared electronically in a comparator and a control signal produced proportional to the variation of the octane rating of the line gasoline from the desired value. This control signal is then used to adjust the flow rate of, for example, the lead alkyl antiknock compound so as to adjust the octane value of the line gasoline to the desired value. To save labour and other costs it is desirable that the analyser be provided as a prefabricated unit which can be transported to and installed on site ready to operate with the minimum of site preparation. However, a prime requirement for the reference engine is a substantially vibration-free mounting which requirement conflicts with the requirement for prefabrication and transportability.
Prefabricated portable buildings are, of course, well known, including prefabricated portable laboratories constructed to the internationally standard dimensions of a container according to the internationally agreed Container-Transport-System (CTS), see for example, German OLS 2 054 684 and 2 217 862, but, in general, such prefabricated laboratories do not recognise or solve the problem of providing a substantially vibration-free mounting for apparatus to be installed in the laboratory and which is sensitive to vibration and which therefore requires a vibration-free mounting.
DISCLOSURE OF INVENTION
In accordance with the present invention this problem has been solved by providing a prefabricated labortory having walls, a floor and a ceiling forming an integral transportable unit and within which are or may be installed the reference engine and its ancillary equipment or other apparatus requiring a vibration-free mounting, the floor of the unit having a hole therethrough and, supported on jacks directly above said hole, a plinth mounting or adapted to mount said engine or other apparatus and being lowerable by said jacks, when the laboratory is in the desired location, onto a prepared foundation exposed through said hole. With the prefabricated laboratory of this invention only a minimum of site preparation is necessary, e.g. levelling and the casting of a concrete platform immediately below where the hole in the floor of the laboratory is to be located and providing a firm base upon which to lower and secure the plinth of the engine in a vibration-free manner. Preferably the laboratory of this invention is used in conjunction with a foundation comprising an upstanding platform, which when the laboratory is in position on its foundation, projects upwardly through the hole in the floor to provide the fixed platform upon which to lower and secure the plinth of the reference engine.
If it is desired to move the laboratory to a new site it is merely necessary to release any fastening members which are used to secure the engine plinth to the foundation member, raise the plinth, with the engine or other apparatus mounted thereon, slightly above the level of the floor by means of the jacks. The laboratory can then be lifted off the foundation as a complete unit and transported to a new site.
Desirably the labortory of this invention is fully fitted out so that upon installation at a desire
REFERENCES:
patent: 2842955 (1958-07-01), Pedersen
patent: 3015912 (1962-01-01), Fistedis
patent: 3274745 (1966-09-01), McManus et al.
patent: 3729875 (1973-05-01), Felson
Gill James J.
The Associated Octel Company, Ltd.
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