CN2395054Y - Single plunger double function oil pump - Google Patents
Single plunger double function oil pump Download PDFInfo
- Publication number
- CN2395054Y CN2395054Y CN 99221775 CN99221775U CN2395054Y CN 2395054 Y CN2395054 Y CN 2395054Y CN 99221775 CN99221775 CN 99221775 CN 99221775 U CN99221775 U CN 99221775U CN 2395054 Y CN2395054 Y CN 2395054Y
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- CN
- China
- Prior art keywords
- oil
- sucker rod
- valve
- pump
- valve 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a single-plunger double-acting sucker rod pump used for an oil pumping unit in an oil field. The upper part of a pump cylinder is connected with an upper oil inlet valve body assembly of which the upper end is connected with a metal sealing pup joint, and a hollow sucker rod capable of moving reciprocally is arranged in the metal sealing pup joint. In the case that a pumping well with low oil production turned into high oil production and a new pumping well with high oil production appear, a large diameter sucker rod pump and a high power oil pumping unit are not necessary to replace. Compared with the prior sucker rod pump with the same pump diameter, the improved sucker rod pump increases the liquid-discharging amount, does not increase the power consumption, and reduces the investment.
Description
The utility model relates to the oil well pump that uses on the pumping unit in oil field, more particularly is the single plunger double acting sucker rod pump.
At present, the oil well pump that uses on oil field suction in a stroke is once oily, and in uphill process, oil suction adds oil extraction, is also not oil suction of the i.e. not oil extraction of idle stroke in the decline process.The Theoretical flowing capacity of existing oil well pump is low, and actual displacement is also low, for the motor-pumped well of high-oil offtake, if increase the oil well pump that discharge capacity just must be changed big one-level, also will increase with the motor that pumping unit load is complementary simultaneously, and power consumption also increases simultaneously.For example: the theoretical maximum discharge capacity of φ 70mm pump can only reach 290m
3/ d, the about 145m of actual displacement
3/ d; Realize 390m
3The Theoretical flowing capacity of/d and 195m
3The actual displacement of/d must be changed the big pump of φ 83mm or φ 95mm.The theoretical maximum discharge capacity of φ 83mm pump is 342m
3/ d, the theoretical maximum discharge capacity of φ 95mm pump is 448m
3/ d.Realize that big discharge capacity does not increase pumping unit load again, can only redesign a kind of new pump, increase lifting rate and don't change big pumping unit, reduce and drop into, save the purpose of power consumption to reach.
The purpose of this utility model will provide a kind of exactly can improve lifting rate, does not but increase pumping unit load, does not change big pumping unit, and power consumption is low, satisfies the single plunger double acting sucker rod pump that the big lifting rate of high-oil offtake motor-pumped well requires.
In order to achieve the above object, technical solution of the present utility model is: be connected with oiling valve body assembly on the top of pump barrel, the upper end of oiling valve body assembly is connected with metallic seal pipe nipple and box cupling on this, is provided with the hollow rod line carrier that can move back and forth in this metallic seal pipe nipple.
The oil-feed valve body assembly comprises oiling valve body, valve ball, valve seat, oil-feed pressure ring, locking nut and O shape ring; Be provided with valve ball, valve seat and O shape ring on last oiling valve body, this oil-feed pressure ring is fixed valve seat, and this locking nut pins the oil-feed pressure ring.
Last travelling valve assembly comprises spool and can form the valve seat that opens strong pass by force with spool.
The outer surface of last oiling valve body assembly and reducer fitting is provided with filter screen.
The utility model has the advantages that: the single plunger double acting sucker rod pump mainly is applicable to the motor-pumped well of high-oil offtake.Under the situation of the motor-pumped well that low yield commentaries on classics high-oil offtake occurs, needn't change the oil well pump and the powerful pumping unit of big pump diameter, because pumping unit and motor are complementary, change big pumping unit and also will change big motor thereupon, can increase power consumption widely like this.Oil well pump after the improvement is compared with the oil well pump in original same pump footpath, and its lifting rate increases, and does not increase power consumption, drops into and reduces.
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail:
Description of drawings: Fig. 1 is a structural representation of the present utility model
As shown in Figure 1, this oil well pump comprises standing valve assembly, box cupling 24, pump barrel 13, last oiling valve body assembly, filter screen 11, metallic seal pipe nipple 4, following travelling valve assembly, plunger 18, goes up travelling valve assembly, hollow rod line carrier 3, delivery connection 1.
This oil well pump is divided into two-part structure, and its external structure is a standing part, is mainly used in oil-feed, and its internal structure is the part of moving about, and is mainly used in oil extraction.Standing part structure wherein: the standing valve assembly is by connecing pump barrel 13 and last oiling valve body assembly on the box cupling 24, above-mentioned connection is and is fixedly connected; Should go up oiling valve body assembly is fixedly connected by metallic seal pipe nipple 4 and box cupling 2 formation; Filter screen 11 is installed in the outer surface of oiling valve body assembly and reducer fitting 12, filtration.Part-structure moves about: the upper end of following travelling valve assembly connects plunger and last travelling valve assembly by lower plunger joint 19, and travelling valve assembly connects hollow rod line carrier 3 and delivery connection 1 again on this.
Last oiling valve body assembly: comprise oiling valve body 5, valve ball 6, valve seat 7, oil-feed pressure ring 9, locking nut 10 and O shape ring 8, wherein, valve ball, valve seat and the O shape ring of in 12 holes of last oiling valve body, packing into, push down valve seat with the oil-feed pressure ring then, pin the oil-feed pressure ring with locking nut again, O shape ring seals.
Last travelling valve assembly: comprise spool 15, valve seat 16, upper traveling valve cage 14 and upper plug joint 17, wherein spool and hollow rod line carrier 3 link, and the upper end of upper plug joint is provided with valve seat, and this valve seat is fixed the position by upper traveling valve cage 14; This spool 15 has replaced valve ball, forms with valve seat to be sealed and matched when descending, has had the function that opens strong pass by force.
Following travelling valve assembly: comprise lower travelling valve cover 20, valve ball 21, valve seat 22, lower plunger joint 19 and bearing pipe close 23.
Standing valve assembly: comprise standing valve cover 25, valve ball 26, valve seat 27 and reducer fitting 28.
The working principle of single plunger double acting sucker rod pump is: when plunger 18 is up, the following travelling valve assembly of plunger bottom is closed, the standing valve assembly is opened, oil-feed, spool 15 in the last travelling valve assembly of plunger upper part is opened with valve seat 16, valve seat in the last oiling valve body assembly is closed, oil in the pump barrel 13 top inner chambers (being the oil that plunger is sucked in the pump barrels by last feed liquor valve body 5 when descending) pressurized, enter hollow rod line carrier 3 by upper traveling valve cage 14, be extracted into ground through delivery connection 1 again.
When plunger 18 is descending, the last travelling valve assembly of plunger upper part is closed, valve seat 7 in the last oiling valve body assembly is opened, oil in the motor-pumped well enters in the pump barrel 13 top inner chambers, and the valve ball 21 in the following travelling valve assembly of plunger bottom, valve seat 22 are opened, and valve ball 26, valve seat 27 in the standing valve assembly are closed, the oily pressurized of pump barrel 13 cavity of resorptions, oil enters hollow rod line carrier 3, through delivery connection 1, is discharged to ground again.
Under the situation of using same motor and pumping unit, φ 70mm single plunger double acting sucker rod pump, Theoretical flowing capacity can reach 390m
3/ d, and only be 290m originally
3/ d, pump efficiency is calculated by 50%, and actual displacement can realize 195m
3/ d, and only be 145m originally
3/ d.
Claims (4)
1, single plunger double acting sucker rod pump, comprise pump barrel, standing valve assembly, following travelling valve assembly and last travelling valve assembly, it is characterized in that being connected with oiling valve body assembly on the top of pump barrel (13), be connected with metallic seal pipe nipple (4) in the upper end of last oiling valve body assembly, in the metallic seal pipe nipple, be provided with the hollow rod line carrier (3) that can move back and forth.
2, single plunger double acting sucker rod pump according to claim 1 is characterized in that the described oiling valve body assembly of going up comprises oiling valve body (5), valve ball (6), valve seat (7), oil-feed pressure ring (9), locking nut (10) and O shape ring (8); Be provided with valve ball, valve seat and O shape ring on last oiling valve body, this oil-feed pressure ring is fixed valve seat, and this locking nut pins the oil-feed pressure ring.
3, single plunger double acting sucker rod pump according to claim 1 is characterized in that the described travelling valve assembly of going up comprises spool (15) and can form the valve seat (16) that opens strong pass by force with spool.
4,, it is characterized in that described outer surface in last oiling valve body assembly and reducer fitting (12) is provided with filter screen (11) according to claim 2 or 3 described single plunger double acting sucker rod pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221775 CN2395054Y (en) | 1999-07-30 | 1999-07-30 | Single plunger double function oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221775 CN2395054Y (en) | 1999-07-30 | 1999-07-30 | Single plunger double function oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2395054Y true CN2395054Y (en) | 2000-09-06 |
Family
ID=34012283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99221775 Expired - Lifetime CN2395054Y (en) | 1999-07-30 | 1999-07-30 | Single plunger double function oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2395054Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335852A (en) * | 2018-12-18 | 2020-06-26 | 中国石油天然气股份有限公司 | Oil-water separate production pipe column and oil-water separate production method |
-
1999
- 1999-07-30 CN CN 99221775 patent/CN2395054Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335852A (en) * | 2018-12-18 | 2020-06-26 | 中国石油天然气股份有限公司 | Oil-water separate production pipe column and oil-water separate production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |