CN201421405Y - Screw thread control type liquid sampler for high pressure environment - Google Patents
Screw thread control type liquid sampler for high pressure environment Download PDFInfo
- Publication number
- CN201421405Y CN201421405Y CN2009201071704U CN200920107170U CN201421405Y CN 201421405 Y CN201421405 Y CN 201421405Y CN 2009201071704 U CN2009201071704 U CN 2009201071704U CN 200920107170 U CN200920107170 U CN 200920107170U CN 201421405 Y CN201421405 Y CN 201421405Y
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- push rod
- cavity
- sampling
- main cavity
- piston
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Abstract
The utility model discloses a screw thread control type liquid sampler for high pressure environment, which comprises a sealed cylinder formed by a main cavity body and a sampling cavity (1) communicated therewith, a piston (2), a push rod (3) and a sampling valve (4); the piston is arranged in the main cavity body, the periphery thereof is combined with the inner cavity wall of the main cavity body, thereby dividing the main cavity body into a liquid incoming cavity (5) and a buffering cavity (6); an opening is arranged on the bottom surface of the main cavity body away from the sampling cavity; one end of the push rod is connected with the piston, the other end extends out of the main cavity body through the opening and is in screw connection with the main cavity body; a sampling openingcontrolled by the sampling valve is arranged on the sampling cavity. The size of the liquid incoming cavity increases through the rotation of the push rod, and polymer solution enters therein throughthe self-pressure. The flow speed of the high-pressure liquid entering the liquid incoming cavity can be controlled through the rotating speed of the push rod, thereby reducing the shearing of the high pressure upon the viscosity of the liquid. The volume of the liquid entering the sampler can be controlled by controlling the length of the rotated-out part of the push rod. The utility model withsimple structure and convenient sampling can effectively prevent the shearing caused by solution upon the sampler under the high-pressure environment, and measure correctly the liquid entering the sampler.
Description
Technical field
The utility model relates to a kind of thread-control high-pressure environment liquid sampler.
Background technology
Polymer flooding has obtained industrial applications as a kind of tertiary oil recovery technology of maturation in many oil fields, and has obtained good effect and economic benefit.In using at the scene, the dosing quality of polymer solution is the key factor that influences the displacement effect.Utilizing wellhead sampling to estimate polymer quality is the important quality control means at the scene.Because the injection of polymer pressure process is higher, sampling is very difficult in the high-voltage tube pump.The tradition sampler is very simple and easy, it only is a cylindrical container, polymer solution is when main valve is opened, moment is full of sampler under pressure, cause the shear degradation of polymer solution viscosity, the injection allocation quality that can not reflect polymkeric substance really causes and can not check and control the quality of polymkeric substance before injecting the stratum effectively.Therefore, need a kind of sampler that can reduce (preventing) polymer solution shear of design, so that the quality of control polymkeric substance.
The utility model content
The purpose of this utility model provides a kind of thread-control high-pressure environment liquid sampler.
The thread-control high-pressure environment liquid sampler that the utility model provides, it comprises the sealed cylinder of being made up of main cavity and the sampling cavity 1 that is communicated with it, it is characterized in that: it also comprises piston 2, push rod 3 and sample valve 4;
Described piston is positioned at described main cavity, and its outer rim matches with the internal chamber wall of described main cavity, and main cavity is divided into the admission chamber 5 that is communicated with sampling cavity and the cushion chamber 6 of sampling cavity far-end; Described main cavity is provided with opening away from the bottom surface of sampling cavity; One end and the described piston of push rod join, and the other end stretches out main cavity by described opening and is spirally connected with main cavity; Described sampling cavity is provided with the sample tap by described sample valve control.
Described piston can comprise piston head 7 and the boss of being located on the piston head 8; The free-end of described boss is provided with the groove with the push rod coupling, to peg graft with described push rod.Specifically, the free-end of described boss can be processed into circular groove, forms the crack with cylindrical push rod and cooperates, and can limit the move left and right of push rod, can guarantee again can not drive piston rotation when push rod rotates.
Described opening is outer can be provided with the push rod guide pipe, so that the direction of control push rod.
Described push rod guide pipe and described push rod specifically can adopt and be spirally connected.
For fear of described admission chamber and described cushion chamber fluid seepage is arranged, can be provided with O-ring seal on the described piston head.
For preventing that high-pressure solution from producing corrosion, each parts of sampler all adopt anticorrosion material to make.
The utility model can be applicable to the liquid sampling under the hyperbaric environment.Slow rotation by push rod slowly increases the volume of admission chamber, and polymer solution slowly enters by self pressure.Rotational speed by push rod can be controlled the flow velocity that highly pressurised liquid enters admission chamber, reduces the shearing of high pressure to liquid viscosity, keeps the authenticity of sample.By the back-out length of control push rod, can control the volume that enters liquid in the sampler.Sampler structure of the present utility model is simple, reliable in action, sampling is convenient, can prevent effectively that solution from entering the shearing that sampler causes under hyperbaric environment, keep the higher viscosity retention ratio of solution, accurately be metered into the liquid in the sampler, can be widely used in the liquid sampling under the hyperbaric environment.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
Following embodiment is convenient to understand better the utility model, but does not limit the utility model.Experimental technique among the following embodiment if no special instructions, is conventional method.
As shown in Figure 1, thread-control high-pressure environment liquid sampler of the present utility model comprises sealed cylinder, piston 2, push rod 3 and the sample valve 4 be made up of main cavity and the sampling cavity 1 that is communicated with it.Described piston comprises piston head 7 and the boss of being located on the piston head 8.The free-end of boss is processed into circular groove, forms the crack with cylindrical push rod and cooperates.Described piston is positioned at described main cavity, and its outer rim matches with the internal chamber wall of described main cavity (described piston head is provided with O-ring seal), and main cavity is divided into the admission chamber 5 that is communicated with sampling cavity and the cushion chamber 6 of sampling cavity far-end.Described main cavity is provided with opening away from the bottom surface of sampling cavity.Opening is provided with the push rod guide pipe outward.One end of push rod joins by described groove and described piston, and the other end stretches out main cavity by described opening and is spirally connected with the push rod guide pipe.Described sampling cavity is provided with the sample tap by described sample valve control.
During use, at first push rod is pushed into the top, the air in the emptying admission chamber.Sample valve with sampler links to each other with the main valve of high pressure line (being polymer solution to be measured in the pipeline) then, after opening the main valve of high pressure line, the sample valve of opening again on the sampler makes admission chamber be connected with the high pressure pipe joint of polymer solution, under the effect of push rod screw thread, admission chamber and cushion chamber form pressure equilibrium.Control push rod then, slowly rotate push rod, piston is slowly moved to the bottom, polymer solution slowly enters admission chamber by self pressure.When push rod is threaded to the end, close sample valve, sampling is finished.When emitting polymer solution, open sample valve, admission chamber moment and atmospheric pressure balance, the rotation push rod is emitted the fluid in the admission chamber, finishes setting-out.
Claims (6)
1, thread-control high-pressure environment liquid sampler, it comprises the sealed cylinder of being made up of main cavity and the sampling cavity (1) that is communicated with it, it is characterized in that: it also comprises piston (2), push rod (3) and sample valve (4);
Described piston is positioned at described main cavity, and its outer rim matches with the internal chamber wall of described main cavity, and main cavity is divided into the admission chamber (5) that is communicated with sampling cavity and the cushion chamber (6) of sampling cavity far-end; Described main cavity is provided with opening away from the bottom surface of sampling cavity; One end and the described piston of push rod join, and the other end stretches out main cavity by described opening and is spirally connected with main cavity; Described sampling cavity is provided with the sample tap by described sample valve control.
2, thread-control high-pressure environment liquid sampler as claimed in claim 1 is characterized in that: described piston comprises piston head (7) and is located at boss (8) on the piston head; The free-end of described boss is provided with the groove with described push rod coupling, and described push rod and described boss are pegged graft by described groove.
3, thread-control high-pressure environment liquid sampler as claimed in claim 1 or 2 is characterized in that: described opening is provided with the push rod guide pipe outward.
4, thread-control high-pressure environment liquid sampler as claimed in claim 3 is characterized in that: described push rod guide pipe and described push rod are spirally connected.
5, as arbitrary described thread-control high-pressure environment liquid sampler in the claim 1,2 or 4, it is characterized in that: on the head of described piston O-ring seal is housed.
6, thread-control high-pressure environment liquid sampler as claimed in claim 3 is characterized in that: on the head of described piston O-ring seal is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201071704U CN201421405Y (en) | 2009-04-13 | 2009-04-13 | Screw thread control type liquid sampler for high pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201071704U CN201421405Y (en) | 2009-04-13 | 2009-04-13 | Screw thread control type liquid sampler for high pressure environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421405Y true CN201421405Y (en) | 2010-03-10 |
Family
ID=41808065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201071704U Expired - Lifetime CN201421405Y (en) | 2009-04-13 | 2009-04-13 | Screw thread control type liquid sampler for high pressure environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421405Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936826A (en) * | 2010-09-25 | 2011-01-05 | 厦门大学 | Microorganism sampler without pressure mutation in deep sea |
| CN105089665A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Extraction type polymer solution sampler |
-
2009
- 2009-04-13 CN CN2009201071704U patent/CN201421405Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936826A (en) * | 2010-09-25 | 2011-01-05 | 厦门大学 | Microorganism sampler without pressure mutation in deep sea |
| CN101936826B (en) * | 2010-09-25 | 2012-03-14 | 厦门大学 | Microorganism sampler without pressure mutation in deep sea |
| CN105089665A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Extraction type polymer solution sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100310 |