CN206268438U - A kind of type voltage regulation intermediate receptacle piston - Google Patents
A kind of type voltage regulation intermediate receptacle piston Download PDFInfo
- Publication number
- CN206268438U CN206268438U CN201621177754.5U CN201621177754U CN206268438U CN 206268438 U CN206268438 U CN 206268438U CN 201621177754 U CN201621177754 U CN 201621177754U CN 206268438 U CN206268438 U CN 206268438U
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- CN
- China
- Prior art keywords
- piston
- cavity
- intermediate receptacle
- valve piston
- ring
- 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 - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to a kind of type voltage regulation intermediate receptacle piston, it is characterised in that the piston middle part is provided with a cavity, and the axis of cavity upper and lower ends is provided with through hole, and the side of cavity upper and lower ends is respectively provided with an O-ring mounting groove, is provided with O-ring；Cavity middle part sets a valve piston, and valve piston side is close to piston cavity inner side, and cavity is divided into piston cavity of resorption and piston upper chamber two parts by valve piston, and valve piston both sides are provided with O-ring mounting groove, are provided with O-ring.The utility model can solve current displacing fluid and driven liquid pressure directly acts on piston, piston is caused to fluctuate, cause the jiggly problem of displacement pressure will be by way of piston middle part sets cavity and built-in valve piston, avoid displacement pressure and by displacement pressure directly contact, reach the alleviation jiggly purpose of displacement pressure.
Description
Technical field
The utility model is related to a kind of intermediate receptacle piston loaded on flowing experiment displacement liquid device, belongs to oil gas field and opens
Hair technical field.
Background technology
Rock core displacement test is one of the most basic and widely used research method, and the purpose of research mainly includes evaluating
The seepage flow characteristics of influence and fluid of the factors such as oil displacement efficiency, the displacement mode of displacing medium to recovery ratio in rock core etc..
In rock core displacement test, the intermediate receptacle for being used mainly includes cylindric housing, is provided with the both ends open of the housing
Upper end cover and bottom end cover, and the piston that can be freely slided in housing is provided with the inside of the housing.Currently used for centre
The piston of container is generally solid, and the pressure of displacing fluid and driven liquid directly acts on piston in experimentation, causes to live
Plug fluctuation, causes displacement pressure unstable, influences experimental result.
Utility model content
Regarding to the issue above, the purpose of this utility model is to overcome the shortcomings of that prior art is present, there is provided a kind of voltage stabilizing
Formula intermediate receptacle piston；Intermediate receptacle piston of the present invention uses built-in valve piston structure, the purpose is to avoid displacement pressure and quilt
Displacement pressure directly contact, alleviates the jiggly phenomenon of displacement pressure.
The technical solution of the utility model is as follows：
A kind of type voltage regulation intermediate receptacle piston, middle part is provided with a cavity, and the axis of cavity upper and lower ends is provided with through hole, empty
The side of chamber upper and lower ends is respectively provided with an O-ring mounting groove, is provided with O-ring；Cavity middle part sets a valve piston, small work
Plug side is close to piston cavity inner side, and cavity is divided into piston cavity of resorption and piston upper chamber two parts, valve piston both sides by valve piston
O-ring mounting groove is provided with, O-ring is installed.
Further, the height of the piston is the twice of diameter.
Further, the height of the valve piston and the wall thickness of piston are identical.
Further, the piston is identical with O-ring on valve piston.
The utility model has the advantage of：
Piston provided by the utility model uses hollow structure, built-in valve piston, in use by allowing pressure
Into piston cavity, the mode contacted with valve piston, it is to avoid displacement pressure and by displacement pressure directly contact, alleviate displacement pressure
Jiggly phenomenon, reduce because piston fluctuation and caused by the jiggly problem of displacement pressure.
Brief description of the drawings
Fig. 1 is the operating diagram of intermediate receptacle；
Fig. 2 is structural representation of the present utility model.
In figure：1st, intermediate receptacle, 11, intermediate receptacle epicoele, 12, intermediate receptacle cavity of resorption, 2, piston, 21, valve piston, 22,
Through hole, 23, O-ring, 24, piston cavity of resorption, 25, piston upper chamber.
Specific embodiment
The utility model is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not constitute to this reality
With new any limitation.
As shown in figure 1, Fig. 1 is the internal cross section figure of intermediate receptacle 1, when intermediate receptacle is subject to pressure from below, P1>
During P2, water in intermediate receptacle cavity of resorption 12 can extrusion piston 2, and then by piston 2 promote the fluid of intermediate receptacle epicoele 12 to
Upper movement, the piston 2 for using on the market at present is generally the rubber piston of solid construction, and two-way pressure (P1, P2 from fluid
Pressure) differ larger, and piston 2 is directly acted on, and the fluctuation of piston 2 is easily caused, cause displacement pressure to be unable to constant pressure displacement.
By the internal modifications of script solid piston 2 into cavity, and piston upper chamber 25 and piston cavity of resorption 24 are separated into by valve piston 21, and it is living
Plug top, bottom are respectively provided with pass through aperture 22, and when intermediate receptacle 1 works, the fluid that bottom is come will not all act on piston 2
Bottom, but enter in cavity of resorption 24 via bottom through hole 22, now P1>P1 ', and whole piston 2 drives up intermediate receptacle
Fluid in epicoele 11, the fluid in intermediate receptacle epicoele 11 is squeezed in flowing into piston cavity of resorption 24 via top aperture, this
When piston upper chamber 25 in pressure be P2 ', P1 ' promote in the middle of valve piston 21 drive up, final P1 '>P2 ', now P1 ', P2 '
Collective effect is on valve piston 21, because pressure difference of the pressure difference of P1 ', P2 ' less than P1, P2, the effect that now piston 2 is under pressure
It is smaller, fluctuation can be slowed down, final basic holding constant pressure drives.
The above is only preferred embodiment of the present utility model, it is noted that the utility model is not limited to
Mode is stated, on the premise of the utility model principle is not departed from, moreover it is possible to further improve, it is new that these improvement also should be regarded as this practicality
The protection domain of type.
Claims (4)
1. a kind of type voltage regulation intermediate receptacle piston, it is characterised in that the piston middle part is provided with a cavity, cavity upper and lower ends
Axis is provided with through hole, and the side of cavity upper and lower ends is respectively provided with an O-ring mounting groove, is provided with O-ring；Cavity middle part sets
A valve piston is put, valve piston side is close to piston cavity inner side, and cavity is divided into piston cavity of resorption and piston upper chamber by valve piston
Two parts, valve piston both sides are provided with O-ring mounting groove, are provided with O-ring.
2. a kind of type voltage regulation intermediate receptacle piston according to claim 1, it is characterised in that the height of the piston is straight
The twice in footpath.
3. a kind of type voltage regulation intermediate receptacle piston according to claim 1, it is characterised in that the height of the valve piston with
The wall thickness of piston is identical.
4. a kind of type voltage regulation intermediate receptacle piston according to claim 1, it is characterised in that on the piston and valve piston
O-ring is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177754.5U CN206268438U (en) | 2016-11-03 | 2016-11-03 | A kind of type voltage regulation intermediate receptacle piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177754.5U CN206268438U (en) | 2016-11-03 | 2016-11-03 | A kind of type voltage regulation intermediate receptacle piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268438U true CN206268438U (en) | 2017-06-20 |
Family
ID=59038786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621177754.5U Expired - Fee Related CN206268438U (en) | 2016-11-03 | 2016-11-03 | A kind of type voltage regulation intermediate receptacle piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387709A (en) * | 2018-01-27 | 2018-08-10 | 东北石油大学 | A kind of gas drive device and method for constant pressure injection to can be achieved in laboratory |
-
2016
- 2016-11-03 CN CN201621177754.5U patent/CN206268438U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387709A (en) * | 2018-01-27 | 2018-08-10 | 东北石油大学 | A kind of gas drive device and method for constant pressure injection to can be achieved in laboratory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20171103 |