Sample-taking device

FIELD: oil and gas industry, possible use for taking samples of liquid from pipelines.

SUBSTANCE: device contains main pipeline, sample-taking section, fastened to main pipeline with possible extraction of sample with enveloping of transverse cross-section of liquid flow without losses, draining valve and manometer. Sample-taking section at input of liquid flow inside the main pipeline is provided with branch pipe with radial apertures, positioned in front of liquid flow with inclined upper end. Cut of inclined end is positioned on the side of branch pipe opposite to radial apertures. Device, narrowing the flow, is mounted behind branch pipe in main pipeline. Draining valve is made in form of core slide valve, spring-loaded relatively to sample-taking section, body with draining aperture and coil. Core slide valve is hermetically mounted inside the body and made of dielectric material. Coil is positioned on external surface of body. In original position core slide valve hermetically covers draining port of body. In working position core slide valve under effect of electromagnetic field, created by coil, is capable of axial movement inside the body.

EFFECT: simplified construction, increased durability.

1 dwg

 

The invention relates to the production, collection, preparation and transport of liquid and gas products and can be used on oil and gas production, oil refining and oil transportation or other enterprises where the work is carried on sampling of liquids from pipelines.

Famous sampler and method of sampling fluid (RF patent No. 2157889, IPC 7 E 21 In 49/08, G 012 N 1/10, publ. bull. No. 29, dated 20.10.2000,), comprising a housing with a cavity for accumulating the liquid phase with a lid at the bottom of the filtering device and the discharge device, the housing of the sampler is rigidly mounted on the outside bottom of the pipe or technological device, the filtering device mounted inside the housing between the cavities of the pipeline and the sampler completely overlapping section, providing their hydrodynamic message and discharge device is mounted on the fitting rigidly mounted on the body of the sampler at the bottom of the cavity of the sampler.

The disadvantages of this device are:

first, take samples have distorted the composition, because the body of the sampler is located below and in fluid flow through the pipeline is its stratification, it contains mainly the heavier fraction in the liquid at the bottom, while the lighter fractions of the liquid, are placed the higher pass the body of the sampler;

secondly, when fluid flow through the pipeline filter device located inside the housing hammered mechanical impurities, and therefore for sampling must be regular cleaning, this requires constant monitoring.

The closest in technical essence is the sampling unit (RU patent for useful model №40391, IPC 7 E 21 In 49/08, F 17 D 3/10, publ. bull. No. 25, dated 10.09.2004,), mounted on the main pipe and is made in two sections attached to the main pipe by means of flange connections, and are provided with adjustable three-way ball valves, selected valve and pressure gauge, with three-way ball valve shaft connected with the control lever with the flexibility to cut one of the sections, and each section is arranged to pass the entire flow of fluid, and one of the sections is the bypass, and the other sample (measured) sample coverage of the cross-section of the fluid flow without losses.

The disadvantages of this device are:

first, the design complexity, due to the large number of parts and components, as well as the complexity and intensity;

second, with frequent sampling of items selected crane, synthetic is fast and it loses integrity, therefore the reduced service life of the device as a whole and requires a revision of the sealing elements selected crane or replacement.

The objective of the invention is to simplify the design and reduce metal consumption without compromising performance and increase the life of the device by increasing the service life of selected tap.

The technical problem is solved by the proposed sampling device containing a main pipeline, a sampling section attached to the main pipeline with the possibility of sampling coverage of the cross-section of the fluid flow without losses, selected valve, pressure gauge.

What's new is that the sampling section at the inlet of the fluid flow inside the main pipe provided with a nozzle with radial holes placed against fluid flow with a beveled upper end, and the cut beveled upper end is placed on the opposite radial holes in the side of the pipe, and the pipe in the main pipe installed device, narrowing the stream, and the selected tap is made in the form of a spring-loaded relative to the sampling section of the gate-core, casing with drain hole and the coil, and the gate-core tightly fitted inside a housing made of dielectric material, and the coil is located on the housing, moreover, in the initial position, the gate-core overlaps the drain hole of the housing and in operable under the influence of an electromagnetic field created by the coil when applying to an electric current, has the possibility of axial movement within the housing, compressing the spring and opening the drain hole of the housing.

The drawing is a schematic representation of the sampling device in the initial position.

Sampling device containing the main pipe 1, the sampling section 2, is fixed with the main pipeline 1 with sample coverage of the cross-section of the fluid flow without losses, selected valve 3 and the pressure gauge 4. The sampling section 2 at the inlet of the fluid flow inside the main pipe 1 is supplied by a pipe 5 with the radial holes 6 placed against fluid flow with a beveled upper end 7. Cut a beveled upper end 7 is placed on the opposite radial holes 6 in the side of the pipe 5. For pipe 5 in the main pipe 1 installed device, narrowing the stream 8.

Selected tap 3 made in the form of spring-loaded by means of a spring 9 relative to the sampling section 2 gate-core 10, a housing 11 with a drain hole 12 and the coil 13.

The gate-core 10 is hermetically installed inside the housing 11 and is made of a dielectric material (such as ceramic), and the coil 13 is located on the outer surface of the shell 11.

In the initial position, the gate-core 10 is hermetically closes the drain hole 12 of the housing 11. In the working position the gate-core 10 under the action of electromagnetic field generated by the coil 11 when applying for the winding of electric current, has the possibility of axial movement within the housing 11, compressing the spring 9 and opening the drain hole 12 of the housing 11.

To prevent unauthorized overflows of liquid paired surfaces of the parts installed sealing ring 14.

Sampling device operates as follows.

In the process of movement through the main pipe 1 (see drawing) the fluid flow, reaching the nozzle 5 installed at the entrance of fluid flow in the sampling section 2 perpendicular to the main pipe 1, through the radial holes 6 enters the pipe 5, where the liquid stream is mixed and divided into two directions:

first, through the beveled upper end 7 of the pipe 5, the fluid flow enters first into the main pipe 1, and then in the device, a narrowing stream 8, and then again in the main pipe 1 for the sampling section 2;

second, the flow of fluid through the pipe 5 flows down and into the sampling section 2, where filling its internal space is OK liquid again flows into the main pipe 1 for the device, narrowing the stream, and connects to the flow moving in the first direction.

When continuously running main pipeline 1 the flow of liquid is covering the whole of its cross section in two directions and sampling section 2 are full breakdown of the liquid composition, the appropriate time and conditions of its selection without ponding.

The gauge 4 is installed in the sampling section 2 to control the pressure during the operation and sampling.

Sampling is as follows. Open the selected valve 3 by the supply of electric current to the coil 13, and since the casing 11 is made of a dielectric material, it creates an electromagnetic field acting on the steel gate-core 10, which moves, i.e. moves inside the housing 11, compressing the spring 9 and opening the drain hole 12 of the housing 11 selected tap 3. In this moment there is a pressure drop over the device, narrowing the thread 8 (sampler takes the operating position), and the current at the sampling section 2, the fluid flow (test) is discharged into a container (not shown) for transportation.

Typing the required volume of sample, applying an electric current to the coil winding 13 stop, in this case the electromagnetic field stops pulling effect on the hyber-core 10, which is due to the elastic force of the spring 9 returns to its original position, tightly overlapping the drain hole 12 of the housing 11 selected tap 3.

The proposed sampling device has a simple structure and low metal content, and increase the life of the device due to the design choice of the crane is increased wear resistance and impermeability to frequent cycles of opening and closing.

Sampling device containing a main pipeline, a sampling section attached to the main pipeline with the possibility of sampling coverage of the cross-section of the fluid flow without losses, the selective valve, a pressure gauge, wherein the sampling section at the inlet of the fluid flow inside the main pipe provided with a nozzle with radial holes placed against fluid flow, with a beveled upper end, and the cut beveled upper end is placed on the opposite radial holes in the side of the pipe, and the pipe in the main pipe installed device, narrowing the stream, and the selected tap is made in the form of a spring-loaded relative to the sampling section of the gate-core, casing with drain hole and the coil, and the gate-core tightly fitted inside a housing made of dielectric is about material, and the coil is located on the chassis, and in the initial position, the gate-core overlaps the drain hole of the housing and in operable under the action of electromagnetic field created by the coil when applying to an electric current, has the possibility of axial movement within the housing, compressing the spring and opening the drain hole of the housing.



 

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