CN204371613U - A kind of pumping-assistant pump for oil well pump - Google Patents
A kind of pumping-assistant pump for oil well pump Download PDFInfo
- Publication number
- CN204371613U CN204371613U CN201420773768.8U CN201420773768U CN204371613U CN 204371613 U CN204371613 U CN 204371613U CN 201420773768 U CN201420773768 U CN 201420773768U CN 204371613 U CN204371613 U CN 204371613U
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- pumping
- pump
- assistant
- valve
- assistant pump
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- 239000003129 oil well Substances 0.000 title claims abstract description 67
- 239000000945 filler Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 abstract description 57
- 230000007423 decrease Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005086 pumping Methods 0.000 abstract description 4
- 241001347978 Major minor Species 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of pumping-assistant pump for oil well pump, belong to oil well pump technical field.Described pumping-assistant pump comprises: upper connection, pumping-assistant pump pump barrel, lower contact, pumping-assistant pump piston, main spring, auxiliary spring and pumping-assistant pump standing valve, the two ends of pumping-assistant pump pump barrel are connected with upper connection and lower contact respectively, pumping-assistant pump piston and pumping-assistant pump pump barrel are slidably connected, the two ends of auxiliary spring are connected with upper connection and pumping-assistant pump piston respectively, pumping-assistant pump standing valve is inserted on pumping-assistant pump piston, and the two ends of main spring are connected with lower contact and pumping-assistant pump standing valve respectively.The utility model is moved reciprocatingly under the effect of major-minor spring by pumping-assistant pump piston, rapidly for oil well pump provides fluid, accelerate the fluid speed entered in oil pump sleeve, both improve the full level of oil well pump inner fluid, add the actual oil pumping amount of oil well pump, turn improve the pressure of the fluid entered in pump barrel, decrease the leakage produced due to the hydraulic difference at oil pump piston two ends.
Description
Technical field
The utility model relates to oil well pump technical field, particularly a kind of pumping-assistant pump for oil well pump.
Background technique
In oil extraction process, along with the exploitation of fluid, the production capacity of some oil wells declines gradually, even there will be stripper well.
The producing fluid level of these stripper wells is low to decline gradually, the oil liquid pressure at oil well pump filler opening place is reduced, when fluid drawn by oil well pump, the fluid speed entered in oil pump sleeve slows down, the fluid amount entered in pump barrel is reduced, and the pressure causing the fluid entered in pump barrel reduces, and then the fluid pressure reduction at the piston two ends of oil well pump is increased, add the wastage of oil well pump, reduce the pump efficiency of oil well pump.Meanwhile, because the pressure entering the fluid in pump barrel reduces, the gas in these fluid is easily overflowed, and escaping gas can occupy the space of pump barrel, thus reduces the fluid uptake of oil well pump, reduces the pump efficiency of oil well pump further.
Summary of the invention
In order to solve in stripper well, the pressure entering the fluid in oil pump sleeve caused because well fluid level declines reduces, and then the emergent gas volume increased in the wastage of oil well pump and pump barrel, reduce the problem of pump efficiency, the utility model embodiment provides a kind of pumping-assistant pump for oil well pump.Described technological scheme is as follows:
The utility model embodiment provides a kind of pumping-assistant pump for oil well pump, and described pumping-assistant pump comprises:
For be connected with described oil pump sleeve bottom upper connection, pumping-assistant pump pump barrel, lower contact and the pumping-assistant pump piston, main spring, auxiliary spring and the pumping-assistant pump standing valve that are arranged in described pumping-assistant pump pump barrel,
The two ends of described pumping-assistant pump pump barrel are fixedly connected with described lower contact with described upper connection respectively, described pumping-assistant pump piston and described pumping-assistant pump pump barrel are slidably connected, the two ends of described auxiliary spring are fixedly connected with described pumping-assistant pump piston with described upper connection respectively, described pumping-assistant pump standing valve to be inserted on described pumping-assistant pump piston and to arrange with described pumping-assistant pump piston coaxial, and the two ends of described main spring are fixedly connected with described pumping-assistant pump standing valve with described lower contact respectively.
Particularly, described pumping-assistant pump standing valve comprises:
One end is inserted into cylindrical shape valve bonnet body on described pumping-assistant pump piston, be arranged on described valve bonnet body in and the valve seat be fixedly connected with described valve bonnet body and the valve ball be arranged between described valve bonnet body and described valve seat, one end of described main spring is sleeved on described valve bonnet body.
Further, one end end face of described valve bonnet body is provided with filler opening, and on the other end end face of described valve bonnet body, center is arranged with 4 circular oil outlets.
Further, the other end end face of described valve bonnet body also offers a long strip oil outlet, the two ends of described long strip oil outlet extend to a described circular oil outlet respectively.
Particularly, described valve seat is installed with valve base joint, described valve base joint is fixedly connected with described valve bonnet body.
Particularly, the inside of described pumping-assistant pump pump barrel is provided with tapered collar valve base, and described pumping-assistant pump piston one end is provided with the tapered collar valve core for coordinating with described tapered collar valve base.
Further, described tapered collar valve base is between described lower contact and described pumping-assistant pump piston.
Particularly, described upper connection is provided with the first spring seat for being fixedly connected with described auxiliary spring, and described pumping-assistant pump piston is provided with the second spring seat for being fixedly connected with described auxiliary spring.
Particularly, described lower contact is provided with the 3rd spring seat for being fixedly connected with described main spring.
Further, the described outside dimension of the 3rd spring seat and the internal diameter size of described main spring match.
The beneficial effect that the technological scheme that the utility model embodiment provides is brought is:
By adopting a kind of pumping-assistant pump being arranged on oil pump sleeve bottom, this pumping-assistant pump comprises main spring that the pumping-assistant pump piston be arranged in pumping-assistant pump pump barrel, the pumping-assistant pump standing valve be inserted on pumping-assistant pump piston, two ends are connected with lower contact and the pumping-assistant pump standing valve of pumping-assistant pump respectively and the auxiliary spring that two ends are connected with upper connection and the pumping-assistant pump piston of pumping-assistant pump respectively, when oil pump piston is descending, main spring is compressed, auxiliary spring is stretched, when oil pump piston is up, pumping-assistant pump piston moves reciprocatingly under the effect of major-minor spring, rapidly for oil well pump provides fluid, accelerate the fluid speed entered in oil pump sleeve, both improve the full level of oil well pump inner fluid, add the actual oil pumping amount of oil well pump, turn improve the pressure of the fluid entered in pump barrel, decrease the leakage produced due to the hydraulic difference at oil pump piston two ends, simultaneously, along with oil pump sleeve inner fluid pressure increases fast, reduce the escaped quantity of gas in pump barrel inner fluid, decrease because gas in oil well pump is on the impact of pump efficiency, in addition, pumping-assistant pump standing valve moves reciprocatingly along with pumping-assistant pump piston, is subject to the flushing of fluid, not easily because deposition booty and fouling or wax deposition, has ensured the sealing of pumping-assistant pump standing valve, decreases and that produce leakage poorly sealed due to pumping-assistant pump standing valve.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of pumping-assistant pump structural representation that the utility model embodiment one provides;
Fig. 2 is the filler opening schematic diagram of a kind of valve bonnet body that the utility model embodiment one provides.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
Embodiment one
The utility model embodiment provides a kind of pumping-assistant pump for oil well pump, and see Fig. 1, this pumping-assistant pump comprises:
For be connected with oil pump sleeve bottom upper connection 1, pumping-assistant pump pump barrel 2, lower contact 3 and the pumping-assistant pump piston 4, main spring 5, auxiliary spring 6 and the pumping-assistant pump standing valve 7 that are arranged in pumping-assistant pump pump barrel 2.
The two ends of pumping-assistant pump pump barrel 2 are fixedly connected with lower contact 3 with upper connection 1 respectively, pumping-assistant pump piston 4 and pumping-assistant pump pump barrel 2 are slidably connected, the two ends of auxiliary spring 6 are fixedly connected with pumping-assistant pump piston 4 with upper connection 1 respectively, pumping-assistant pump standing valve 7 to be inserted on pumping-assistant pump piston 4 and coaxially to arrange with pumping-assistant pump piston 4, and the two ends of main spring 5 are fixedly connected with pumping-assistant pump standing valve 7 with lower contact 3 respectively.
In the present embodiment, pumping-assistant pump piston 4 is hollow circular cylinder.In actual applications, oil well pump can be tubing pump.
In the present embodiment, pumping-assistant pump is fixedly connected with oil pump sleeve bottom, can replace the standing valve of general oil well pump.Particularly, when oil pump piston is descending, pumping-assistant pump standing valve 7 cuts out, and oil well pump provides fluid by the outlet valve on oil pump piston to oil pipe; When oil pump piston is up, pumping-assistant pump standing valve 7 is opened, and the outlet valve of oil pump piston cuts out, and oil well pump starts to extract fluid.
In the present embodiment, pumping-assistant pump standing valve 7 is inserted on pumping-assistant pump piston 4, and particularly, pumping-assistant pump piston 4 is stretched out in filler opening one end of pumping-assistant pump standing valve 7, and oil outlet one end of pumping-assistant pump standing valve 7 is inserted in pumping-assistant pump piston 4.
In the present embodiment, pumping-assistant pump piston 4 can be moved reciprocatingly in pumping-assistant pump pump barrel 2 by main spring 5 and auxiliary spring 6, can accelerate the speed providing fluid for oil well pump by the to-and-fro motion of pumping-assistant pump piston 4.
Particularly, pumping-assistant pump standing valve 7 comprises:
One end is inserted into cylindrical shape valve bonnet body 71 on pumping-assistant pump piston 4, is arranged in valve bonnet body 71 and the valve seat 72 be fixedly connected with valve bonnet body 71 and the valve ball 73 be arranged between valve bonnet body 71 and valve seat 72, and one end of main spring 5 is sleeved on valve bonnet body 71.
Further, valve seat 72 can be installed with valve base joint 721, valve base joint 721 is fixedly connected with valve bonnet body 71, valve seat 72 can be fixedly connected with valve bonnet body 71.
It should be noted that, pumping-assistant pump standing valve 7 can move reciprocatingly along with pumping-assistant pump piston 4, simultaneously, valve seat 72 and valve ball 73 can be subject to the flushing repeatedly of fluid, not easily fouling or wax deposition because of deposition booty, ensured the sealing of pumping-assistant pump standing valve 7, decrease due to pumping-assistant pump standing valve 7 poorly sealed and produce leakage.
Further, one end end face of cylindrical shape valve bonnet body 71 is provided with filler opening, and on the other end end face of valve bonnet body 71, center is arranged with 4 circular oil outlets 711.
In the present embodiment, pumping-assistant pump standing valve 7 adopts the closed cage being provided with centrosymmetric 4 circular oil outlet 711 structures, the amount of moving swiftly relatively of pumping-assistant pump standing valve 7 is 0.06, has good steering capability (amount of moving swiftly is less relatively, and steering capability is better).
Further, see Fig. 2, the other end end face of valve bonnet body 71 also offers a long strip oil outlet 712, the two ends of long strip oil outlet 712 extend to a circular oil outlet 711 respectively.
In the present embodiment, valve bonnet body 71 being set up long strip oil outlet 712, the Flow area of pumping-assistant pump standing valve 7 can be increased, reducing the resistance of fluid by being subject to during pumping-assistant pump standing valve 7.In addition, set up long strip oil outlet, when valve ball 73 falls after rise, fluid can be increased to the vertical of valve ball 73, make that valve ball 73 falls after rise more rapidly, pumping-assistant pump standing valve 7 cuts out more timely, thus reduce because pumping-assistant pump standing valve 7 cuts out delayed and leakage that is that cause.
Particularly, the inside of pumping-assistant pump pump barrel 2 is provided with tapered collar valve base 21, and pumping-assistant pump piston 4 one end is provided with the tapered collar valve core 41 for coordinating with tapered collar valve base 21.
In the present embodiment, when pumping-assistant pump piston 4 is by oil liquid pressure, move downward (now in the inside of pumping-assistant pump pump barrel 2, pumping-assistant pump standing valve 7 cuts out, oil pump piston discharges fluid) time, tapered collar valve core 41 contacts with tapered collar valve base 21 and seals, and can reduce the leakage produced due to the gap between pumping-assistant pump piston 4 and pumping-assistant pump pump barrel 2 inwall.
Further, tapered collar valve base 21 is between lower contact 3 and pumping-assistant pump piston 4.
In the present embodiment, tapered collar valve base 21, between lower contact 3 and pumping-assistant pump piston 4, can play the effect of the descending degree of depth of restriction pumping-assistant pump piston 4, makes pumping-assistant pump piston 4 when compressing main spring 5, main spring 5 can not be fully compressed, and can increase the working life of main spring 5.
Particularly, upper connection 1 is provided with the first spring seat 11 for being fixedly connected with auxiliary spring 6, and pumping-assistant pump piston 4 is provided with the second spring seat 42 for being fixedly connected with auxiliary spring 6.
Further, the internal diameter size of the first spring seat 11 and the outside dimension of auxiliary spring 6 are harmonious, and the outside dimension of the second spring seat 42 and the internal diameter size of auxiliary spring 6 are harmonious.
Particularly, lower contact 3 is provided with the 3rd spring seat 31 for being fixedly connected with main spring 5.
Further, the outside dimension of the 3rd spring seat 31 and the internal diameter size of main spring 5 are harmonious.
In the present embodiment, the main spring 5 can selected by following standard:
1, start compression under the pressure effect that main spring 5 produces at the high fluid column of at least 40m.
In actual applications, in the oil well of normal production capacity, the liquid-column height in oil well pump, generally more than hundred meters, can start compression under the pressure effect that main spring 5 produces at the high fluid column of 40m, make this pumping-assistant pump can be applicable to stripper well well.
2, main spring 5 can bear at least 10
6secondary deformation.
In actual applications, main spring 5 is selected bear deformation number of times and be greater than 10
6spring, the working life of pumping-assistant pump can be increased.
In addition, when recovering the oil to low pressure, low yield, the oil well that do not shake out, cup packer can be installed additional below pumping-assistant pump, negative pressure production is carried out to this oil well, good oil recovery efficiency can be obtained.
It should be noted that, the pumping-assistant pump in the present embodiment well can not only be applicable to stripper well, equally also can be applicable to barreler well.
In the present embodiment, the oil well pump that have employed pumping-assistant pump both went for stripper well, went for barreler again.
The working principle of pumping-assistant pump is sketched below in conjunction with Fig. 1.
Install pumping-assistant pump, particularly, the upper connection 1 of pumping-assistant pump be fixedly connected with the pump barrel of oil pump sleeve bottom, the lower contact 3 of pumping-assistant pump is fixedly connected with oil pipe.Pumping-assistant pump is arranged in oil well pump, replaces the standing valve of oil well pump.
When the piston of oil well pump moves downward, pumping-assistant pump standing valve 7 cuts out, oil liquid pressure between oil pump piston and pumping-assistant pump piston 4 increases, when this fluid produces enough strong active force to pumping-assistant pump piston 4, pumping-assistant pump piston 4 starts to move downward, and compresses main spring 5, stretching auxiliary spring 6 simultaneously.When fluid (fluid namely in oil pump sleeve) pressure between oil pump piston and pumping-assistant pump piston 4 is greater than the delivery valve opening pressure on oil pump piston, fluid in oil pump sleeve is discharged oil well pump by the outlet valve on oil pump piston, enters the oil pipe on oil well pump top.
When the piston of oil well pump starts to move upward, oil liquid pressure between oil pump piston and pumping-assistant pump piston 4 reduces, outlet valve on oil pump piston cuts out, and pumping-assistant pump standing valve 7 is opened under the oil liquid pressure effect of oil well, and the fluid in oil well starts to enter in the pump barrel of oil well pump.Simultaneously, the active force acted on pumping-assistant pump piston 4 reduces, pumping-assistant pump piston 4 starts to move reciprocatingly under the effect of main spring 5 and auxiliary spring 6, by the to-and-fro motion of pumping-assistant pump piston 4, the speed of the fluid entered in pump barrel can be accelerated, improve the full level of pump barrel inner fluid, make the oil liquid pressure in oil pump sleeve increase fast simultaneously, reduce the leakage produced due to the hydraulic difference at oil pump piston two ends, simultaneously, along with the oil liquid pressure in pump barrel increases fast, reduce the escaped quantity entering gas in pump barrel inner fluid, decrease because gas in oil well pump is on the impact of pump efficiency.
It should be noted that, pumping-assistant pump standing valve 7 moves along with the motion of pumping-assistant pump piston 4, particularly when pumping-assistant pump piston 4 moves reciprocatingly, pumping-assistant pump standing valve 7 is also along with moving reciprocatingly, the fluid that pumping-assistant pump standing valve 7 is subject to rinses, and then to make on the valve seat 72 of pumping-assistant pump standing valve 7 and valve ball 73 not easily structure or wax deposition because deposition booty, ensure the sealing of pumping-assistant pump standing valve 7, decrease and that produce leakage poorly sealed due to pumping-assistant pump standing valve 7.
It should be noted that, conventional oil well pump, after the producing fluid level of oil well reduces, can increase the oil liquid pressure at oil well pump filler opening place by the pump setting depth increasing oil well pump, but, increase the loss of plunger stroke that pump setting depth can increase oil well pump, and then reduce the pump efficiency of oil well pump.In the present embodiment, after have employed pumping-assistant pump, the pump setting depth of oil well pump need not be increased, be accelerated the speed of the fluid entered in pump barrel by the to-and-fro motion of pumping-assistant pump piston 4, improve the full level of pump barrel inner fluid, make oil well pump to be applicable to stripper well and can not pump efficiency to be reduced.
In sum, the pumping-assistant pump of the present embodiment substitutes the standing valve of oil well pump in oil well pump, simultaneously, when oil well pump extracts fluid, pumping-assistant pump is by the to-and-fro motion of pumping-assistant pump piston 4, for oil well pump Quick is for fluid, accelerate the fluid speed entered in oil pump sleeve, both improve the full level of oil well pump inner fluid, add the actual oil pumping amount of oil well pump, turn improve the pressure of the fluid entered in pump barrel, decrease the leakage produced due to the hydraulic difference at oil pump piston two ends, improve the pump efficiency of oil well pump; In addition, relative to the standing valve of general oil well pump, the pumping-assistant pump standing valve 7 of this pumping-assistant pump moves reciprocatingly along with the piston of pumping-assistant pump, be subject to the flushing of fluid, not easily fouling or wax deposition because of deposition booty, ensured the sealing of pumping-assistant pump standing valve 7, decrease due to pumping-assistant pump standing valve 7 poorly sealed and produce leakage, further increase the pump efficiency of oil well pump.
The utility model embodiment is by adopting a kind of pumping-assistant pump being arranged on oil pump sleeve bottom, this pumping-assistant pump comprises the pumping-assistant pump piston be arranged in pumping-assistant pump pump barrel, be inserted into the pumping-assistant pump standing valve on pumping-assistant pump piston, the main spring that two ends are connected with lower contact and the pumping-assistant pump standing valve of pumping-assistant pump respectively, and the auxiliary spring that two ends are connected with upper connection and the pumping-assistant pump piston of pumping-assistant pump respectively, when oil pump piston is descending, main spring is compressed, auxiliary spring is stretched, when oil pump piston is up, pumping-assistant pump piston moves reciprocatingly under the effect of major-minor spring, rapidly for oil well pump provides fluid, accelerate the fluid speed entered in oil pump sleeve, both improve the full level of oil well pump inner fluid, add the actual oil pumping amount of oil well pump, turn improve the pressure of the fluid entered in pump barrel, decrease the leakage produced due to the hydraulic difference at oil pump piston two ends, simultaneously, along with oil pump sleeve inner fluid pressure increases fast, reduce the escaped quantity of gas in pump barrel inner fluid, decrease because gas in oil well pump is on the impact of pump efficiency, in addition, pumping-assistant pump standing valve moves reciprocatingly along with pumping-assistant pump piston, is subject to the flushing of fluid, not easily because deposition booty and fouling or wax deposition, has ensured the sealing of pumping-assistant pump standing valve, decreases and that produce leakage poorly sealed due to pumping-assistant pump standing valve.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. for a pumping-assistant pump for oil well pump, it is characterized in that, described pumping-assistant pump comprises:
For be connected with described oil pump sleeve bottom upper connection (1), pumping-assistant pump pump barrel (2), lower contact (3) and the pumping-assistant pump piston (4), main spring (5), auxiliary spring (6) and the pumping-assistant pump standing valve (7) that are arranged in described pumping-assistant pump pump barrel (2)
The two ends of described pumping-assistant pump pump barrel (2) are fixedly connected with described lower contact (3) with described upper connection (1) respectively, described pumping-assistant pump piston (4) and described pumping-assistant pump pump barrel (2) are slidably connected, the two ends of described auxiliary spring (6) are fixedly connected with described pumping-assistant pump piston (4) with described upper connection (1) respectively, described pumping-assistant pump standing valve (7) is inserted into described pumping-assistant pump piston (4) and goes up and coaxially arrange with described pumping-assistant pump piston (4), the two ends of described main spring (5) are fixedly connected with described pumping-assistant pump standing valve (7) with described lower contact (3) respectively.
2. pumping-assistant pump according to claim 1, it is characterized in that, described pumping-assistant pump standing valve (7) comprising: one end is inserted into cylindrical shape valve bonnet body (71) on described pumping-assistant pump piston (4), be arranged on described valve bonnet body (71) in and the valve seat (72) be fixedly connected with described valve bonnet body (71) and the valve ball (73) be arranged between described valve bonnet body (71) and described valve seat (72), one end of described main spring (5) is sleeved on described valve bonnet body (71).
3. pumping-assistant pump according to claim 2, is characterized in that, one end end face of described valve bonnet body (71) is provided with filler opening, and on the other end end face of described valve bonnet body, center is arranged with 4 circular oil outlets (711).
4. pumping-assistant pump according to claim 3, it is characterized in that, the other end end face of described valve bonnet body (71) also offers a long strip oil outlet (712), the two ends of described long strip oil outlet (712) extend to a described circular oil outlet (711) respectively.
5. pumping-assistant pump according to claim 2, is characterized in that, described valve seat (72) is installed with valve base joint (721), and described valve base joint (721) is fixedly connected with described valve bonnet body (71).
6. pumping-assistant pump according to claim 1, it is characterized in that, the inside of described pumping-assistant pump pump barrel (2) is provided with tapered collar valve base (21), and described pumping-assistant pump piston (4) one end is provided with the tapered collar valve core (41) for coordinating with described tapered collar valve base (21).
7. pumping-assistant pump according to claim 6, is characterized in that, described tapered collar valve base (21) is positioned between described lower contact (3) and described pumping-assistant pump piston (4).
8. the pumping-assistant pump according to any one of claim 1-7, it is characterized in that, described upper connection (1) is provided with the first spring seat (11) for being fixedly connected with described auxiliary spring (6), and described pumping-assistant pump piston (4) is provided with the second spring seat (42) for being fixedly connected with described auxiliary spring (6).
9. the pumping-assistant pump according to any one of claim 1-7, is characterized in that, described lower contact (3) is provided with the 3rd spring seat (31) for being fixedly connected with described main spring (5).
10. pumping-assistant pump according to claim 9, is characterized in that, the described outside dimension of the 3rd spring seat (31) and the internal diameter size of described main spring (5) match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773768.8U CN204371613U (en) | 2014-12-10 | 2014-12-10 | A kind of pumping-assistant pump for oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773768.8U CN204371613U (en) | 2014-12-10 | 2014-12-10 | A kind of pumping-assistant pump for oil well pump |
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| Publication Number | Publication Date |
|---|---|
| CN204371613U true CN204371613U (en) | 2015-06-03 |
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| CN201420773768.8U Expired - Fee Related CN204371613U (en) | 2014-12-10 | 2014-12-10 | A kind of pumping-assistant pump for oil well pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156078A (en) * | 2015-10-14 | 2015-12-16 | 山东威马泵业股份有限公司 | Hydraulic oil production device for crude oil exploitation |
| CN106545487A (en) * | 2015-09-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of hollow oil well pump of ring valve overhead type |
| CN110185420A (en) * | 2018-02-22 | 2019-08-30 | 中国石油化工股份有限公司 | A kind of ladder is continuously depressured supplementary potentiating oil pickup apparatus and method |
| CN112176562A (en) * | 2020-11-03 | 2021-01-05 | 温州素萨纺织品有限公司 | Automatic oil return device of sewing machine |
-
2014
- 2014-12-10 CN CN201420773768.8U patent/CN204371613U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545487A (en) * | 2015-09-16 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of hollow oil well pump of ring valve overhead type |
| CN105156078A (en) * | 2015-10-14 | 2015-12-16 | 山东威马泵业股份有限公司 | Hydraulic oil production device for crude oil exploitation |
| CN105156078B (en) * | 2015-10-14 | 2017-08-01 | 山东威马泵业股份有限公司 | The hydraulic oil producing device that oil extraction is used |
| CN110185420A (en) * | 2018-02-22 | 2019-08-30 | 中国石油化工股份有限公司 | A kind of ladder is continuously depressured supplementary potentiating oil pickup apparatus and method |
| CN110185420B (en) * | 2018-02-22 | 2022-12-06 | 中国石油化工股份有限公司 | Stepped continuous pressure-reducing and efficiency-increasing oil pumping device and method |
| CN112176562A (en) * | 2020-11-03 | 2021-01-05 | 温州素萨纺织品有限公司 | Automatic oil return device of sewing machine |
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