CN2572040Y - Oil suction pump - Google Patents
Oil suction pump Download PDFInfo
- Publication number
- CN2572040Y CN2572040Y CN 02252651 CN02252651U CN2572040Y CN 2572040 Y CN2572040 Y CN 2572040Y CN 02252651 CN02252651 CN 02252651 CN 02252651 U CN02252651 U CN 02252651U CN 2572040 Y CN2572040 Y CN 2572040Y
- Authority
- CN
- China
- Prior art keywords
- valve assembly
- plunger
- pump
- oil
- plungers
- 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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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses an oil suction pump, which is composed of an upper connector, an upper pump cylinder, an upper traveling valve assembly, an upper and a lower plungers, a coupling changing buckle, a lower pump cylinder, a lower traveling valve assembly and a fixing valve assembly, wherein, the diameter of the upper plunger is larger than that of the lower plunger; an interconnecting hole is arranged on the coupling changing buckle. The utility model adopts double plungers coupling; one downward secondary force always exists in an upper and a lower stroke processes, helping the descending of the plungers; the stroke loss is reduced; the pumping efficiency is increased; the condition of the lower oil sucking rod can be improved; simultaneously, when the plunger is taken out of a working cylinder, the communication of oil sleeves can be realized; the functions of an oil discharging pump can be achieved.
Description
The utility model relates to a kind of oil well pump.
There is elevated pressures in present conventional oil pump plunger piston owing in the pump chamber in descending process, and travelling valve is opened needed elevated pressures, the bigger resistance of existence when causing plunger descending.This resistance causes rod sag on the pump, the sucker rod fatigue fracture, and loss of plunger stroke increases, and also causes the bottom side-abrasion of rod string simultaneously, and is particularly evident in the thick oil well performance.Though the part Special Pump has taked to reduce the design of descending resistance, cause the pump delivery coefficient to reduce, influenced the extract ability.
The purpose of this utility model just provides a kind of novel oil well pump, and it can reduce descending resistance, improves pump efficiency.
The purpose of this utility model be achieved in that novel oil well pump by upper connection, go up pump barrel, go up the travelling valve assembly, upper and lower plunger, connect become button, down pump barrel, travelling valve assembly, standing valve assembly are formed down, upper connection, go up pump barrel, connect become button, pump barrel, standing valve assembly are threaded down, the diameter of upper plug is greater than the diameter of lower plunger, and the connection change is buckled and had intercommunicating pore.
The utility model adopts double-plunger to connect, the upper plug diameter is greater than the lower plunger diameter, connect to become to buckle and have intercommunicating pore, thereby between upper plug upper section and bottom surface, have pressure reduction all the time when making down stroke, therefore in the up-down stroke process, have a downward additional force all the time, the help plunger is descending, reduced loss of plunger stroke, improved pump efficiency, the operating mode of bottom sucker rod improves, can realize when plunger trips out working barrel simultaneously that oil jacket is communicated with, and plays the effect of oil drainer.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1: the utility model structural representation;
In order to produce descending power, the plunger of novel oil well pump adopts double-plunger to connect, the top plunger diameter is bigger, the bottom plunger diameter is less relatively, as shown in Figure 1, novel oil well pump is by upper connection 1, last pump barrel 2, last travelling valve assembly 3, upper plug 4, lower plunger 5, connect and become button 6, following pump barrel 7, following travelling valve assembly 8, standing valve assembly 9 is formed, upper connection 1, last pump barrel 2, connect and become button 6, following pump barrel 7, standing valve assembly 9 is threaded, have intercommunicating pore on the connection change button 6, make pump barrel 2, upper plug 4, lower plunger 5 and connection become the space that constitutes between the button 6 and are communicated with the oil jacket annular space.Upper plug 4 base pressures and lower plunger 5 tops are much at one, and normal conditions lower tubular column pressure is much larger than annulus liquid level pressure, thereby between upper plug upper section and bottom surface, there is pressure reduction when making down stroke all the time, therefore in the up-down stroke process, there is so downward additional force all the time, the help plunger is descending, reduces even the counteracting downstream resistance.Reduce the bottom rod sag, reduce loss of plunger stroke and improve pump efficiency.
Claims (1)
1, a kind of novel oil well pump, it is characterized in that: it by upper connection (1), go up pump barrel (2), go up travelling valve assembly (3), upper plug (4), lower plunger (5), connect become button (6), down pump barrel (7), travelling valve assembly (8), standing valve assembly (9) are formed down, upper connection (1), go up pump barrel (2), connect become button (6), pump barrel (7), standing valve assembly (9) are threaded down, the diameter of upper plug (4) has intercommunicating pore greater than the diameter of lower plunger (5) on the connection change button (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252651 CN2572040Y (en) | 2002-09-09 | 2002-09-09 | Oil suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252651 CN2572040Y (en) | 2002-09-09 | 2002-09-09 | Oil suction pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572040Y true CN2572040Y (en) | 2003-09-10 |
Family
ID=33722072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02252651 Expired - Fee Related CN2572040Y (en) | 2002-09-09 | 2002-09-09 | Oil suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572040Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083522A1 (en) * | 2007-01-11 | 2008-07-17 | Jianjun Ling | A rod pump used for eliminating eccentric rod wear and providing forward well-flushing |
| CN105736337A (en) * | 2016-03-21 | 2016-07-06 | 大庆渤基科技开发有限公司 | Efficient energy-saving oil well pump |
-
2002
- 2002-09-09 CN CN 02252651 patent/CN2572040Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083522A1 (en) * | 2007-01-11 | 2008-07-17 | Jianjun Ling | A rod pump used for eliminating eccentric rod wear and providing forward well-flushing |
| CN105736337A (en) * | 2016-03-21 | 2016-07-06 | 大庆渤基科技开发有限公司 | Efficient energy-saving oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |