CN201421404Y - Hydraulic control type liquid sampler for high pressure environment - Google Patents

Hydraulic control type liquid sampler for high pressure environment Download PDF

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Publication number
CN201421404Y
CN201421404Y CN2009201071687U CN200920107168U CN201421404Y CN 201421404 Y CN201421404 Y CN 201421404Y CN 2009201071687 U CN2009201071687 U CN 2009201071687U CN 200920107168 U CN200920107168 U CN 200920107168U CN 201421404 Y CN201421404 Y CN 201421404Y
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CN
China
Prior art keywords
piston
liquid
main cavity
cavity
sampling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009201071687U
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Chinese (zh)
Inventor
李成见
管虹翔
张健
纵封臣
赵文森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
Original Assignee
China National Offshore Oil Corp CNOOC
CNOOC Research Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN2009201071687U priority Critical patent/CN201421404Y/en
Application granted granted Critical
Publication of CN201421404Y publication Critical patent/CN201421404Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a hydraulic control type liquid sampler for high pressure environment, which comprises a sealed cylinder formed by a main cavity body and a sampling cavity (1), a piston (2), a sampling valve (3), a control valve (4) and a liquid incoming and outgoing pipeline (5); one end of the piston is arranged in the main cavity body, which divides the main cavity body into a liquid incoming cavity (6) and a buffering cavity (7); the other end of the piston extends out of the main cavity body through the opening thereon; a liquid inlet is arranged on the side surface of main cavity body, which is connected externally with the liquid incoming and outgoing pipeline; a sampling opening controlled by the sampling valve is arranged on the sampling cavity; the control valve is arranged at the free end of the liquid incoming and outgoing pipeline. The moving speed of the piston can be controlled by adjusting the liquid discharging speed of the control valve, thereby controlling the flow speed of the high-pressure liquid when entering the liquid incoming cavity, and reducing the shearing of the high pressure upon the viscosity of the liquid. The utility model with simple 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

A kind of hydraulic-control high-pressure environment liquid sampler
Technical field
The utility model relates to a kind of hydraulic-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 hydraulic-control high-pressure environment liquid sampler.
The hydraulic-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, sample valve 3, operation valve 4 and liquid inlet and outlet piping 5;
One end of 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 6 that is communicated with sampling cavity and the cushion chamber 7 of sampling cavity far-end; Described main cavity is provided with opening away from the bottom surface of sampling cavity, and the other end of piston stretches out main cavity by described opening and is tightly connected with main cavity; Position near described opening on the side of described main cavity is provided with the liquid inlet, the external liquid inlet and outlet piping in described liquid inlet; Described sampling cavity is provided with the sample tap by described sample valve control; Described operation valve is located at the free-end of described liquid inlet and outlet piping.
Described piston can comprise the piston head 8 of an end, the polished rod 9 of the other end and the boss 10 in the middle of both; Piston head and boss are positioned at main cavity, and polished rod stretches out main cavity by described opening.By slowly moving of polished rod the admission chamber volume of sample valve is slowly increased, polymer solution slowly enters by self pressure.
Greater than the height of described liquid inlet to described bottom surface away from sampling cavity, sample liquids flows out from liquid outlet described boss when avoiding taking a sample along the height of piston moving direction.
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.
Be in communication with the outside for fear of gas, influence the hydraulic pressure in the described cushion chamber, described opening and described piston junction can be provided with O-ring seal.
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.Can control the translational speed of polished rod by the tapping speed of operation valve, thereby control the flow velocity that highly pressurised liquid enters admission chamber, reduce the shearing of high pressure, keep the authenticity of sample liquid viscosity.By the sliding length of control polished rod, can control and enter liquid volume 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, hydraulic-control high-pressure environment liquid sampler of the present utility model comprises sealed cylinder, piston 2, sample valve 3, operation valve 4 and the liquid inlet and outlet piping 5 be made up of main cavity and the sampling cavity 1 that is communicated with it.Described piston comprises the piston head 8 of an end, the polished rod 9 of the other end and the boss 10 in the middle of both.Described piston head and boss are positioned at main cavity, and the outer rim of piston head 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 6 that is communicated with sampling cavity and the cushion chamber 7 of sampling cavity far-end.Described main cavity is provided with opening away from the bottom surface of sampling cavity, and the free-end of polished rod stretches out main cavity by described opening and be tightly connected with main cavity (described opening is provided with O-ring seal); Position near described opening on the side of described main cavity is provided with the liquid inlet, the external liquid inlet and outlet piping in described liquid inlet; Described sampling cavity is provided with the sample tap by described sample valve control; Described operation valve is located at the free-end of described liquid inlet and outlet piping.
During use, at first water or hydraulic oil, closed control valve will be full of in the cushion chamber by operation valve.Then the main valve of sample valve with high pressure line (being polymer solution to be measured in the pipeline) linked to each other, open the main valve of high pressure line, open the sample valve on the sampler again, under the effect of hydraulic pressure, admission chamber and cushion chamber form pressure equilibrium in cushion chamber; Adjusting control valve is then slowly emitted the liquid in the cushion chamber, and the cushion chamber internal pressure is reduced gradually, and polymer solution slowly enters admission chamber by self pressure; When piston was pushed to the bottom, the boss on the piston pushed up to bonnet, finishes sampling, cushioned the whole emptying of intracavity liquid, pressure and atmospheric pressure balance this moment.When emitting polymer solution, open sample valve, admission chamber moment and atmospheric pressure balance, polish rod is emitted the fluid in the admission chamber, finishes setting-out.

Claims (6)

1, hydraulic-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), sample valve (3), operation valve (4) and liquid inlet and outlet piping (5);
One end of 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 (6) that is communicated with sampling cavity and the cushion chamber (7) of sampling cavity far-end; Described main cavity is provided with opening away from the bottom surface of sampling cavity, and the other end of piston stretches out main cavity by described opening and is tightly connected with main cavity; Position near described opening on the side of described main cavity is provided with the liquid inlet, the external liquid inlet and outlet piping in described liquid inlet; Described sampling cavity is provided with the sample tap by described sample valve control; Described operation valve is located at the free-end of described liquid inlet and outlet piping.
2, hydraulic-control high-pressure environment liquid sampler as claimed in claim 1 is characterized in that: described piston comprises the piston head (8) of an end, polished rod of the other end (9) and the boss (10) in the middle of both; Piston head and boss are positioned at main cavity, and polished rod stretches out main cavity by described opening.
3, hydraulic-control high-pressure environment liquid sampler as claimed in claim 1 or 2 is characterized in that: described boss along the height of piston moving direction greater than the height of described liquid inlet to described bottom surface away from sampling cavity.
4, hydraulic-control high-pressure environment liquid sampler as claimed in claim 3 is characterized in that: the head of described piston is provided with O-ring seal.
5, as claim 1,2 or 4 described hydraulic-control high-pressure environment liquid samplers, it is characterized in that: described opening and described piston junction are provided with O-ring seal.
6, hydraulic-control high-pressure environment liquid sampler as claimed in claim 3 is characterized in that: described opening and described piston junction are provided with O-ring seal.
CN2009201071687U 2009-04-13 2009-04-13 Hydraulic control type liquid sampler for high pressure environment Expired - Lifetime CN201421404Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201071687U CN201421404Y (en) 2009-04-13 2009-04-13 Hydraulic control type liquid sampler for high pressure environment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201071687U CN201421404Y (en) 2009-04-13 2009-04-13 Hydraulic control type liquid sampler for high pressure environment

Publications (1)

Publication Number Publication Date
CN201421404Y true CN201421404Y (en) 2010-03-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928255A (en) * 2012-11-14 2013-02-13 天津市先权工贸发展有限公司 Liquid in-situ chromatographic sampling device inside high-temperature high-pressure reaction kettle and method of liquid in-situ chromatographic sampling device
CN103452554A (en) * 2012-06-03 2013-12-18 新疆科力新技术发展有限公司 Flash evaporation prevention sealed sampling and metering device for high-temperature high-pressure saturated liquid
CN112924237A (en) * 2021-01-26 2021-06-08 安徽金三隆再生资源有限公司 Sewage treatment plant is used in neodymium iron boron waste material processing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103452554A (en) * 2012-06-03 2013-12-18 新疆科力新技术发展有限公司 Flash evaporation prevention sealed sampling and metering device for high-temperature high-pressure saturated liquid
CN103452554B (en) * 2012-06-03 2017-04-26 新疆科力新技术发展股份有限公司 Flash evaporation prevention sealed sampling and metering device for high-temperature high-pressure saturated liquid
CN102928255A (en) * 2012-11-14 2013-02-13 天津市先权工贸发展有限公司 Liquid in-situ chromatographic sampling device inside high-temperature high-pressure reaction kettle and method of liquid in-situ chromatographic sampling device
CN112924237A (en) * 2021-01-26 2021-06-08 安徽金三隆再生资源有限公司 Sewage treatment plant is used in neodymium iron boron waste material processing

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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