CN202338340U - Device for controlling flow rate of high-pressure fluid - Google Patents
Device for controlling flow rate of high-pressure fluid Download PDFInfo
- Publication number
- CN202338340U CN202338340U CN2011204956355U CN201120495635U CN202338340U CN 202338340 U CN202338340 U CN 202338340U CN 2011204956355 U CN2011204956355 U CN 2011204956355U CN 201120495635 U CN201120495635 U CN 201120495635U CN 202338340 U CN202338340 U CN 202338340U
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- screw
- pressure
- ring groove
- pressure fluid
- capillary tube
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Abstract
The utility model discloses a device for controlling flow rate of high-pressure fluid, which includes a screw pair connected between a high-pressure cavity and a low-pressure cavity, and the screw pair consists of an internal threaded pipe (1) and a screw (2); a guide ring groove (3) and a sealing ring groove (4) are arranged on the outer circle of the screw (2); a seal ring (5) is arranged in the sealing ring groove (4); a guide hole (6) is arranged in the bottom of the guide ring groove (3); and the guide hole (6) is communicated with a central hole (7) in the end part of the screw (2). A set of screw pair is adopted to replace the extremely-thin capillary tube with the inner diameter small than 0.1mm, and the mini gap is produced to replace the capillary tube after fine threads are machined for matching, as a result, the high-pressure fluid slowly releases pressure without the control of the control system, so as to prevent the gas and the liquid of the sample from changing during the sampling process. The device solves the technical problem that the sample obtained under the high-temperature and high-pressure environment of the deep oil-gas field is more similar with the original phase, thereby having high significance in geological analysis.
Description
Technical field
the utility model relates to a kind of device of controlling the high-pressure fluid flow velocity, belongs to the slow pressure release technical field of high-pressure fluid.
Background technology
in river west oil gas field need realize that about 3000 meters of well depths locate sampling; For the phase of preserving sample does not change, sample must get into sampler extremely slowly during sampling, and must charge into the replacement liquid of certain volume this moment earlier; Principle sampling through displacement; Be that sample pushes replacement liquid under the high pressure effect, replacement liquid is got rid of through capillary tube or fine thread fit clearance extremely slowly, thereby the phase of guaranteeing whole sampling process sample can not change.High-pressure fluid participates in realizing under the control slow pressure release at non control system; Common way just is to use superfine capillary tube (capillary inner diameter is less than 0.1mm) to carry out pressure release; But at present domesticly almost can not make the capillary tube of internal diameter, if buy external superfine capillary tube very expensive less than 0.1mm.
Summary of the invention
The purpose of
the utility model is, a kind of device of controlling the high-pressure fluid flow velocity is provided.Being implemented in less than the superfine capillary tube of 0.1mm with the secondary alternative internal diameter of an external threading is that we can replace capillary tube through the minim gap that the processing precise screw thread cooperate the back to produce; Realize high-pressure fluid slow pressure release of realization under non control system participates in controlling, thereby the sample that solution obtains is more near original phase behavior under dark oil gas field high temperature and high pressure environment.
The technical scheme of the utility model
a kind of device of controlling the high-pressure fluid flow velocity comprises the screw thread pair that is connected between high pressure chest and the low pressure chamber, and screw thread pair is made up of riffled tube and screw rod; The screw rod cylindrical is provided with water conservancy diversion annular groove and closure gasket groove, is provided with sealing ring in the closure gasket groove, and the guide ring trench bottom is provided with pod apertures, and pod apertures communicates with the centre bore of screw rod end.
compared with prior art; The utility model substitutes internal diameter less than the superfine capillary tube of 0.1mm with external threading pair; Realize high-pressure fluid slow pressure release of realization under non control system participates in controlling, guarantee that any variation does not take place for the gas of sample in the sampling process and liquid.Solved the sample under dark oil gas field high temperature and high pressure environment, obtained more near the technical problem of original phase behavior, geological analysis has been significant.Internal diameter is complicated less than the superfine production technology of capillary of 0.1mm in the prior art, cost is high, efficient is low, length consuming time, at present domestic can't production.Rely on import just to make that related industry is under one's control.It is ingenious, not only cost-saved less than the superfine structural framing capillaceous of 0.1mm that the utility model substitutes internal diameter with screw thread pair, also for domestic industries provides internal diameter less than the superfine substitute capillaceous of 0.1mm, filled up domestic blank.The apparatus structure of the utility model is simple, and production technology is simple, processing cost is low, production efficiency is high, machining period is short, and processing easily can realize the function of internal diameter less than the superfine hair of 0.1mm suction pipe fully.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Being labeled as in
accompanying drawing: 1-riffled tube, 2-screw rod, 3-water conservancy diversion annular groove, 4-closure gasket groove, 5-sealing ring, 6-pod apertures, 7-centre bore.
The specific embodiment
are further described the utility model below in conjunction with accompanying drawing and embodiment, but not as the foundation to the utility model restriction.
embodiment.
a kind of device of controlling the high-pressure fluid flow velocity, as shown in Figure 1, comprise the screw thread pair that is connected between high pressure chest and the low pressure chamber, screw thread pair is made up of riffled tube 1 and screw rod 2; Screw rod 2 cylindricals are provided with water conservancy diversion annular groove 3 and closure gasket groove 4, are provided with sealing ring 5 in the closure gasket groove 4, and water conservancy diversion annular groove 3 bottoms are provided with pod apertures 6, and pod apertures 6 communicates with the centre bore 7 of screw rod 2 ends.
Implementation process of the utility model and principle
the utility model is that a cover accurate thread pair is connected between fluid high-pressure chamber and the low pressure chamber, and the fluid of high pressure chest flows into low pressure chamber through the gap between the accurate thread deputy thread tooth; The diameter specifications of effective length, threaded engagement precision and screw thread through regulating threaded engagement realizes the purpose of control high-pressure fluid flow velocity.The secondary accuracy class of accurate thread is not less than 6 grades.The diameter specifications of accurate thread pair is less than M30-6H.The effective length of threaded engagement is not less than 300mm.
Claims (1)
1. device of controlling the high-pressure fluid flow velocity is characterized in that: comprise the screw thread pair that is connected between high pressure chest and the low pressure chamber, screw thread pair is made up of riffled tube (1) and screw rod (2); Screw rod (2) cylindrical is provided with water conservancy diversion annular groove (3) and closure gasket groove (4), is provided with sealing ring (5) in the closure gasket groove (4), and water conservancy diversion annular groove (3) bottom is provided with pod apertures (6), and pod apertures (6) communicates with the centre bore (7) of screw rod (2) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204956355U CN202338340U (en) | 2011-12-02 | 2011-12-02 | Device for controlling flow rate of high-pressure fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204956355U CN202338340U (en) | 2011-12-02 | 2011-12-02 | Device for controlling flow rate of high-pressure fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338340U true CN202338340U (en) | 2012-07-18 |
Family
ID=46487033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204956355U Expired - Lifetime CN202338340U (en) | 2011-12-02 | 2011-12-02 | Device for controlling flow rate of high-pressure fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150164A (en) * | 2017-12-15 | 2018-06-12 | 西北大学 | One kind is used for oil gas field deep-well gas-liquid mixture sampler |
-
2011
- 2011-12-02 CN CN2011204956355U patent/CN202338340U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150164A (en) * | 2017-12-15 | 2018-06-12 | 西北大学 | One kind is used for oil gas field deep-well gas-liquid mixture sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |