CN101358590A - Rotary type one-way drip for screw pump - Google Patents
Rotary type one-way drip for screw pump Download PDFInfo
- Publication number
- CN101358590A CN101358590A CNA2008101395192A CN200810139519A CN101358590A CN 101358590 A CN101358590 A CN 101358590A CN A2008101395192 A CNA2008101395192 A CN A2008101395192A CN 200810139519 A CN200810139519 A CN 200810139519A CN 101358590 A CN101358590 A CN 101358590A
- Authority
- CN
- China
- Prior art keywords
- oil
- connection
- uni
- drip
- connection body
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010992 reflux Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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Abstract
The invention provides a rotary uni-directional drip of a screw rod pump which consists of a collar, a connection body, a limiting screw cap, a connection sleeve, a check ring, a valve ball, a valve seat and a lower joint. The invention is characterized in that a left rotating structure is adopted by the connection thread in the connection body; both the connection sleeve and the shell of the connection body are provided with spill ports; the connection body moves upwards by being opposite to the connection sleeve when draining oil in a rotating way and is located by the limiting screw cap; after the rotary uni-directional drip of a screw rod pump is instantly stopped, the valve ball of the uni-directional drip closes a valve port under the effect of gravity to prevent the well liquid between oil bushings from refluxing, thus effectively improving the effect for preventing reverse rotation; when the oil is needed to be drained, an oil pipe is deasil rotated and an upper joint moves upwards; when the spill port on the upper joint is communicated with a central pipe, the oil drain is realized.
Description
One, technical field:
The present invention relates to the oil field oil recovery machiner, especially the rotary type one-way drip of screw pump oil production system special use.
Two, background technique:
In the screw pump oil production system process, the moment of torsion of surface drive transmission is delivered to sucker rod by polished rod, and sucker rod connects rotor again, and rotor is running continuously in stator, and well liquid is risen to ground.When the screw pump instantaneous stop, the difference of liquid level between oil pipe and tubing and casing will produce a reaction force to pump, cause the screw pump counter-rotating.The scheme of using generally is directly to add the brake anti kickback attachment on surface drive at present, does not have to consider to take anti-reverse measure from the down-hole, and anti-reverse like this effect is often undesirable, has potential safety hazard.
Three, summary of the invention:
The objective of the invention is to avoid above-mentioned deficiency, and a kind of rotary type one-way drip for screw pump is provided.
The invention provides a kind of rotary type one-way drip for screw pump, form by box cupling, connecting body, limit screw cap, back-up ring, valve ball, connecting sleeve, valve seat and lower contact.Connecting thread adopts left-handed structure in the connecting body, all has the draining hole on connecting sleeve and the connecting body housing, and the relative connecting sleeve of connecting body moves up during the rotation draining, locatees by limit screw cap.
The connecting sleeve housing has the draining hole, and the upper end is connected with limit screw cap by screw thread.Also have the draining hole on the connecting body, the lower end links to each other with back-up ring.Connecting sleeve and lower contact are connected, and valve ball cooperates with connecting sleeve, and the upper end is spacing by back-up ring, and the lower end is spacing by valve seat, and lower contact connects rotary tubing anchor.
Be connected screw pump tail pipe lower end tubing anchor upper end, can only cooperate with rotary tubing anchor.Behind instantaneous stop, the valve ball of one-way drip is close port under action of gravity, prevents that the well liquid between tubing and casing from refluxing, and effectively improves anti-reverse effect.When needing draining, the oil pipe that turns clockwise, upper connection is up, when draining hole in the upper connection and center tube connection, realizes draining.
Four, description of drawings:
Accompanying drawing is a structural drawing of the present invention.
Five, embodiment:
Referring to accompanying drawing, a kind of rotary type one-way drip for screw pump comprises box cupling 1, connecting body 2, connecting sleeve 4 and lower contact 8, connecting sleeve 4 intrinsic limit screw caps 3, connecting body 2 intrinsic back-up rings 5, valve seat 7 is fixed in the lower contact 8, valve ball 6 is fixed in connecting sleeve 4 endoporus, and box cupling 1 and lower contact 8 are threaded with screw pump tail pipe and rotary tubing anchor respectively.
When screw pump ran well, this rotary type one-way drip was opened, and the well liquid of tubing and casing annular space upwards promotes under the pumping action of screw pump.When unexpected shutdown, valve ball 6 is dropping under the deadweight effect on connecting sleeve 7 fitting surfaces, and close port stops the well liquid between tubing and casing to reflux, thereby effectively prevents the rotor reversing.
When the needs draining, turn clockwise oil pipe until blocking with pipe wrench, box cupling 1 upwards promotes with the screw pump tail pipe, the connecting body 2 that links to each other with box cupling 1 also upwards promotes, connecting body 2 is a left-handed thread with connecting sleeve 4 threaded connection places, swivel shackle, and connecting sleeve 4 is opposite with the moving direction of connecting body 2, when two draining holes communicate, realize draining from outside.
Claims (1)
1, a kind of rotary type one-way drip for screw pump, form by box cupling, connecting body, limit screw cap, connecting sleeve, back-up ring, valve ball, valve seat and lower contact, it is characterized in that connecting thread adopts left-handed structure in the connecting body, all have the draining hole on connecting sleeve and the connecting body housing, the relative connecting sleeve of connecting body moves up during the rotation draining, locatees by limit screw cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101395192A CN101358590B (en) | 2008-08-20 | 2008-08-20 | Rotary type one-way drip for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101395192A CN101358590B (en) | 2008-08-20 | 2008-08-20 | Rotary type one-way drip for screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358590A true CN101358590A (en) | 2009-02-04 |
| CN101358590B CN101358590B (en) | 2010-12-08 |
Family
ID=40331150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101395192A Active CN101358590B (en) | 2008-08-20 | 2008-08-20 | Rotary type one-way drip for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358590B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122004A (en) * | 2016-08-10 | 2016-11-16 | 姜经志 | Sand discharge pressure release single flow device |
-
2008
- 2008-08-20 CN CN2008101395192A patent/CN101358590B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122004A (en) * | 2016-08-10 | 2016-11-16 | 姜经志 | Sand discharge pressure release single flow device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101358590B (en) | 2010-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231211 Granted publication date: 20101208 |