Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1998-12-02
2000-08-01
Noland, Thomas P.
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
G01N 112
Patent
active
060949988
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention is concerned with a closed portable sampling apparatus, and a sampling system and method for obtaining a sample of a liquid product which may be hazardous. More particularly, the invention is concerned with gauging and sampling of liquid bulk petroleum and chemical products.
BACKGROUND
The Restricted gauging units are of a design that they are open to the atmosphere, therefore allowing such vapor to escape, and require hand dumping of a collected sample.
DISCLOSURE OF THE INVENTION
The closed portable sampling system which forms the subject matter of this application is an improvement over prior art restricted systems and gauging units. The invention is concerned with a vapor return hose assembly and a vapor return hose connection, a sampling barrel with a built-in sampling valve and a flow control valve forming part of a bottle fill attachment which upon opening, any interior positive pressure assists in pushing the extracted sample into a sample container.
One of the features of the present invention is the use of an integrated sampling diverter valve which operates in conjunction with but independently of a cargo tank's existing vapor control valve. An important feature of this invention is that once the apparatus of the invention is attached to the tank or a storage container, by an entry valve or adapter fitting, an operator can use the apparatus forming part of the system and perform the method of the invention both to extract and to bottle a product sample in place without transfer of the collected sample to another container, thereby using the same container for collection and bottling and avoiding any slight possible emission to the atmosphere.
The closed sampling apparatus according to the teachings of this invention includes the vapor return hose assembly, the vapor return hose connection connected to the sampling tape's wiper assembly and comprises a vapor return check valve and the vapor return hose forming part of the vapor return hose assembly which has one end coupled to the vapor return check valve connection and the other end coupled with the sampling container or bottle.
The system of the present invention includes an integrated sampling diverter valve which operates in conjunction with but independently of a product tank's existing entry valve. The apparatus which can be attached to any entry valve associated with the product tank is used in conjunction with a sampling valve which forms the subject matter of U.S. Pat. No. 5,452,620 granted on Sep. 20, 1995 in the name of the inventor of the subject matter of this application and assigned to the assignee of this application. An operator can then extract and bottle a product sample in place without the necessity of transferring the collected sample to another container.
The closed unit according to the invention eliminates vapor release, and thereby also protects the end user from possible exposure to potentially toxic vapors.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic front view of an apparatus for use in connection with the self-contained sampling system according to the invention with the sampling barrel shown in one particular orientation thereof and having a window to view the bottom of a product sampling tube contained within the sampling barrel and of the sampling valve;
FIG. 1A is a detail of an internal spring loaded vapor return check valve;
FIG. 1B is a detail of FIG. 1 showing a connection to a cargo container vapor valve or other pipe-like adapter;
FIG. 2 is a separate view of a sample container or bottle shown in FIG. 1 together with a cap sealing closure for closure of the sample container or bottle;
FIG. 2A is a sectional view of the cap sealing closure for the sample container of FIG. 2;
FIG. 3A is a partially detailed enlarged view of the sampling barrel and the bottom of the product sampling tube shown in its full stow or retracted position;
FIG. 3B is a view similar to that of FIG. 3A showing the partially detailed enlarged view of the sampling barrel and a gauging
REFERENCES:
patent: 3505820 (1970-04-01), Draper et al.
patent: 5165246 (1992-11-01), Cipolla et al.
patent: 5408889 (1995-04-01), Parault
patent: 5408890 (1995-04-01), Klaus
patent: 5452620 (1995-09-01), Giannone
patent: 5460973 (1995-10-01), Schrader
MMC International Corp.
Noland Thomas P.
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