Sample-taking device

FIELD: oil industry.

SUBSTANCE: hollow body of device is actually a fragment of force pipeline at mostly vertical portion of mouth armature. Organ for controlling flow of multi-component gas-liquid substance is made in form of valve mounted on shaft having lesser size, than inner diameter of hollow body. Sample chamber is in form of ring-shaped hollow on hollow body, positioned at same level with valve. Ring-shaped hollow is connected at input to flow of multi-component gas-liquid substance through intake channels, positioned symmetrically to valve rotation axis, and at output - with locking organ. Driving screw mounted on body of locking organ is connected to sample-taking valve with possible mutual rotation and combined axial displacement. Sample-taking valve and shaft with valve are mated with possible synchronous rotation around common axis and relative axial displacement. Working organs of device are positioned immediately near main flow of substance taken as sample to provide for lesser dimensions of device and prevented freezing in winter season.

EFFECT: simplified construction, simplified maintenance.

7 dwg

 

The invention relates to oilfield equipment for sampling for analysis at the mouth of oil wells and can be used for integrated sampling multicomponent gas-liquid systems, transported through pipelines.

On the constructive and functional characteristics of the closest analogue is a sampling device (patent RU 2151290 G 1), inside which is the body control the flow of multicomponent gas-liquid environment, equipped with sealing elements, select the camera in the form of sealed spherical segment with intake channels, the locking body with the guide tube, the valve of the sampling set with the ability to interact with a spring-loaded rod.

The body of the flow control and shut-off body are driven individually by separate arms in a certain sequence.

The disadvantages of the known devices is the complexity of the design, which increases its cost and operating costs, complicates maintenance. The control flow is driven through the shaft with Salnikov seal, want to strictly follow:

a) periodically re-tighten the packing to prevent leakage;

b) at least wear add seals or replace a new set, due to the stop of the well, a violation of ecology at the wellhead, etc.

There is a danger that distant from the main fluid flow details as the stem, the spring can take the cold, because the oil composition may be water, and the device will heat up during sampling. In addition, the device is mounted on a horizontally located the site of the discharge pipe, where multicomponent gas-liquid mixture has time to settle (settle) in a way that negatively affects the results of the sample analysis.

The technical problem solved by the invention is to simplify the design and maintenance of the device, improving the quality of sampling multicomponent gas-liquid environment.

The problem is solved in that the hollow body is a fragment of a pressurized pipeline, mainly in vertical section of wellhead equipment, body control the flow of multicomponent gas-liquid medium is made in the form installed on the damper shaft smaller than the inner diameter of the hollow casing, and the selected camera is a ring cavity in the hollow body, located at the valve and communicated to the inlet flow of multicomponent gas-liquid medium through the intake channels, are located symmetrically with the axis of the oil damper, a valve body, and mounted in the valve housing authority of the drive screw is connected to the valve sampling rotatably relative to each other and joint axial movement, and the valve of the sampling and the shaft with the damper associated with simultaneous rotation about a common axis and relative axial movement.

1 shows a section along the line a-a in figure 3; figure 2 is a horizontal projection of the device in figure 1 in position ″sample″; figure 3 is a view along arrow G in figure 1 (view in upright section of wellhead equipment, "goose", where the device); 4 - section but the line b-b In figure 1 in the open position of the valve; figure 5 is a section along the line b-b In figure 1 in the closed position of the valve; figure 6 is a section along the line b-B figure 1; figure 7 is a provision of the device when it is placed on a horizontally positioned plot of pressure pipeline.

The device consists of a hollow body 1 (figure 1), representing a fragment of the discharge pipe at the vertical part of wellhead equipment, the so-called gander (figure 3). Inside the hollow of the housing 1 is located a shaft 2 to which is attached (welded) flap 3, and the diameter of the valve 3 is smaller than the internal diameter of the hollow body 1, thus formed annular gap 4 (2) about whom the an unforgettable mixed flow of multicomponent gas-liquid environment.

In the hollow body 1 is provided camera sampling 5 (1, 2)located at the level of the flap 3 and is communicated to inlet flow of multicomponent gas-liquid medium through the inlet channels 6, located symmetrically to the axis of rotation of the valve 3, a valve body. In the boss 7 by a nut 8 mounted housing locking device 9 with the guide tube 10, two-sided saddle 11 gasket 12 (figure 2). Located at the end of the housing 9 of the drive screw 13 is connected to the valve sampling 14 for rotation relative to each other and joint axial movement through engagement of the annular protrusion 15 with a corresponding groove in the drive screw 13 (figure 2). And valve sampling 14 (figure 1) and the shaft 2 with the flap 3 are associated with synchronous limited rotation around a common axis at 90° and relative axial movement, which is achieved by the Cam to engage (In-In, 4, 5) and a splined connection (b-B, 6), respectively. On the outer end of the valve sampling 14 is an opening 16 located in the plane of the valve 3 (Fig 1), as well as the flat sections 17 (4, 5) and 18 (6) of the valve 14. The device may be mounted on the horizontal section of the pressure pipe, for example, a shut-off body "up" (7) or down key (not shown) or between the exact position. In each case it is necessary to calculate the optimum layout of the intake channel 6 with their respective sizes.

For sampling of multi-component gas-liquid environment must be installed under the guide tube 10 cumulative capacity (not shown). On the drive screw 13 to wear a removable handle (not shown)supplied with the device, turn it on the lapel.

At the initial moment under the action of the friction force between the valve 14 and the drive screw 13 on the section of the annular protrusion 15 (figure 2) and through the splined connection (6) of the shaft 2 with the flap 3 will rotate 90° and will occupy a closed position (figure 5), seeing the way the Cams 19. Upon further rotation of the drive screw 13, the valve 14 by a splined connection (6) departs from the seat 11 and multicomponent gas-liquid mixed the mixture through the annular gap 4 channels sampling 6 enters the cell sample 5 and through the open saddle 11 and the guide tube 10 in cumulative capacity.

In the process of sampling multicomponent gas-liquid mixture flow stops, and goes on thin plastic annular space 4 in the same proportional composition of the components, but with greater speed, and it occurs in the area of the suction channel 6.

After sampling the drive screw 13 must be rotated inversion, which is simultaneously the shaft 2 with the flap 3, turning back to the 90°occupy the open position (figure 4)and the valve to the sample 14 is pressed against the valve seat 11, simultaneously and automatically trying to understand each other to the last. This grinding valve couples the seat 11 and the valve 14 takes place when the device is opened for sampling, which positively affects the reliability of the device as a whole.

If after sampling for unforeseen reasons, the flap 3 remained closed, as judged by the position of the holes 16 (Fig 1), the pre-relaxation and loosening of the drive screw 13, it is necessary to rotate the valve sampling 14, hooking an arm through the hole 16, before the opening of the valve 3 and finally to close the valve 14 by means of a drive screw 13. In operation, after using one side of the seat 11 of the last set of the other party, indicating maintainability, rational use of metal saddles and, consequently, to improve the reliability of the device.

In this technical solution simplified the design of the device and its service. The fact that the operating parts of the device are located directly near the main thread selected for the sample environment, points to its compactness and, above all, to exclude cases of freezing in winter.

Sampling device integrated sampling of megacomp entei gas-liquid medium, contains mounted in the pressure pipeline of the mouth of the hollow valve body, inside of which is a rotary body control the flow of multicomponent gas-liquid environment, select the camera with intake channels, the locking body located within the housing actuated valve sampling, handle and guide tube, wherein the hollow body is a fragment of the penstock mainly in vertical section of wellhead equipment, body control the flow of multicomponent gas-liquid medium is made in the form installed on the damper shaft smaller than the inner diameter of the hollow casing, and the selected camera is a ring cavity in the hollow body, located at the valve and reported on the entrance with the flow of multicomponent gas-liquid medium through the intake channels made symmetrically to the axis of rotation of the valve, a valve body, and mounted in the valve housing authority of the drive screw is connected to the valve sampling rotatably relative to each other and joint axial movement, and the valve of the sampling and the shaft with the damper associated with synchronous limited rotation around a common axis and relative axial movement.



 

Same patents:

FIELD: hypodermics engineering.

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FIELD: lifting and transportation facilities.

SUBSTANCE: invention relates to clamshells designed for taking samples of bottom ground. Proposed clamshell contains articulated scoops 1, stops to limit maximum angle of scoop opening, scoop opening mechanism made in form of two flexible links 9 with rings 10 on lower ends of links. Scoops are furnished with hooks 3 with pins 4 on which rings are fitted in operation. Scoop closing mechanism is made in from of levers 5 interacting through hanger with load-lifting wire rope. Each scoop closing lever is rigidly secured on upper part of scoop, being arranged at other side of axis of symmetry of clamshell and connected by free end with hanger of load-lifting wire rope by means of flexible link.

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2 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: device comprises vessel mounted inside a protecting casing, vessel lid provided with pillars and plug for the vessel, which is connected with the lifting mechanism through a flexible link and provided with rods and traverse secured to the protecting casing. The openings for the rods are made in the cover interposed between the traverse and protecting casing. The device has rippers of sediments and compression spring interposed between the traverse and cover. The rippers are made of tension springs, the one ends of which are interconnected, and belt, whose outer side is provided with scrappers for ripping the sediments. The device is also provided with rollers, which are secured to the bottom face of the protecting casing and embraced with the belt. The second ends of the tension spring and the belt are secured to the cover.

EFFECT: enhanced reliability of sampling.

1 cl, 1 dwg

FIELD: investigating or analyzing materials.

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FIELD: oil industry.

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