CN202789460U - Oil pump preventing gas - Google Patents
Oil pump preventing gas Download PDFInfo
- Publication number
- CN202789460U CN202789460U CN 201220328394 CN201220328394U CN202789460U CN 202789460 U CN202789460 U CN 202789460U CN 201220328394 CN201220328394 CN 201220328394 CN 201220328394 U CN201220328394 U CN 201220328394U CN 202789460 U CN202789460 U CN 202789460U
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- valve
- plunger
- oil pump
- airlock
- pump
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Abstract
The utility model relates to an oil pump preventing gas. The oil pump comprises a pump cylinder, wherein two ends of the pump cylinder are respectively connected with a lifting sub and a fixing valve. A plunger is arranged in the pump cylinder and can move along the axial direction of the pump cylinder. A pull rod extends into the lifting sub and the plunger, a butterfly valve can be movably sleeved on the pull rod and is located on the upper portion of the plunger, and a traveling valve is arranged at the lower end of the plunger and fixedly connected with the lower end portion of the pull rod. When the oil pump is in exchange of an upper stroke and a lower stroke, the traveling valve can quickly seal or open the bottom of the plunger, and influences of a gas locking phenomenon generated by gas in the oil pump in the prior art on pump efficiency of the oil pump are overcome. The butterfly valve and the pull rod are connected not in a fixed mode, so the problem that impact load on the pull rod and a sucker rod is overhigh in the process of the exchange of the upper stroke and the lower stroke is overcome, the probability of breaking off of the sucker rod is reduced, and normal production of crude oil is guaranteed.
Description
Technical field
The utility model relates to a kind of oil well pump, especially relates to a kind of airlock-resistant oil pump, and it can avoid the problem of the down stroke Time Delay Opening that causes because of gas in the pump barrel, and can prevent effectively that load is to the impact of sucker rod.
Background technique
Along with the increase of oil field development time, the energy on stratum constantly consumes, and makes by the effect of natural energy crude oil extraction worse and worse.Have to come crude oil extraction by the artificial stratum energy that increases.Wherein the thick oil filling air catalytic oxidation oil recovery technique of tradition notes nitrogen, carbon dioxide injection and development in recent years is more satisfactory so that its application area is increasing in the oil recovery effect of field application.But it is more and more obvious that its negative effect also shows; especially along with continuing to increase that gas injection (vapour) is measured; make (vapour) body of bringing about the desired sensation increasing on the pumping efficiency impact of oil well pump; the phenomenon that often can occur gas lock in oil pumping process; that is, because the existence of gas in the pump barrel causes when down stroke; the traveling valve of oil well pump bottom can produce the phenomenon of Time Delay Opening, has had a strong impact on the working efficiency of oil well pump.In addition because the fluid amount of oil well pump output is very large so that in the oil well pump work at lower dead centre during with the upper dead center conversion, the impulsive load on the effect sucker rod is larger, takes off so that the sucker rod ratio is easier to break.Thereby so that the maintenance work amount in the crude oil production strengthens, then the unit crude oil cost improves constantly.
Because the defective that above-mentioned known technology exists, the design people develops airlock-resistant oil pump of the present utility model according to the Production design experience of being engaged in for many years related domain and association area, with the pumping efficiency of raising oil well pump, and reduces maintenance, reduces production costs.
The model utility content
The purpose of this utility model provides kind of an airlock-resistant oil pump, and the problem that it can either avoid the down stroke Time Delay Opening that causes because of gas in the pump barrel can prevent effectively that again load is to the impact of sucker rod.
For this reason, the utility model proposes a kind of airlock-resistant oil pump, it has pump barrel, and the two ends of described pump barrel are connected with standing valve with the lifting short circuit respectively; Plunger is arranged in the described pump barrel, and can move axially along described pump barrel; One pull bar stretches in described lifting short circuit and the plunger, and a disc valve can be set on the described pull bar movably, and is positioned at described plunger upper part, and a traveling valve is arranged on the lower end of described plunger and is fixedly connected with institute rheme bar underpart.
Aforesaid airlock-resistant oil pump wherein, is provided with dish-shaped valve bonnet and dish-shaped valve seat in the described lifting short circuit, described disc valve is between described dish-shaped valve bonnet and dish-shaped valve seat.
Aforesaid airlock-resistant oil pump, wherein, described dish-shaped valve bonnet is provided with a plurality of axial holes, and described disc valve can seal described through hole.
Aforesaid airlock-resistant oil pump wherein, also is arranged with the plunger pressure ring on the described pull bar, described plunger pressure ring is arranged on the bottom of described dish-shaped valve seat, and is positioned at described plunger upper part, and can seal described plunger.
Aforesaid airlock-resistant oil pump, wherein, described dish-shaped valve bonnet and dish-shaped valve seat are threaded with described lifting short circuit.
Aforesaid airlock-resistant oil pump, wherein, described standing valve comprises the standing valve pedestal that is connected with described pump barrel, be arranged on the standing valve seat of described standing valve pedestal bottom, can be seated at the standing valve ball of described standing valve seat, and be arranged in the described standing valve pedestal and be positioned at the standing valve cover on described standing valve ball top.
Aforesaid airlock-resistant oil pump, wherein, the upper end of pull bar forms the boss that can be connected with the sucker rod connecting-and-unconnecting device.
Aforesaid airlock-resistant oil pump, wherein, the top of described lifting short circuit is connected with upper connection.
Aforesaid airlock-resistant oil pump, wherein, between described lifting short circuit, pump barrel and the standing valve for being threaded.
Aforesaid airlock-resistant oil pump, wherein, described standing valve cover and standing valve seat are threaded with described standing valve pedestal respectively.
Compare with known technology, characteristics of the present utility model and advantage are:
The anti-airway dysfunction that oil well pump of the present utility model has is that the machinery-open type traveling valve that its pull bar is fixedly connected with can avoid " gas lock ".Disc valve when down stroke gravity and be subject to closing under the downward thrust of pull bar, traveling valve is opened in time; The machinery-open type traveling valve is driven by pull bar, when up stroke, can close in time, reduce the wastage of traveling valve, can in time forcibly open again at down stroke, conventional pump traveling valve pressurized gas and phenomenon of Time Delay Opening when down stroke have been avoided, alleviate the generation of " gas lock " and " vapor lock " phenomenon, improved pumping efficiency of oil pump.The use of machinery-open type traveling valve gas-tight structure has improved the gas-tight effect; Because disc valve is socket with pull bar but not is fixedly connected with, therefore sucker rod is when lower dead centre and upper dead center conversion, the weight of the fluid column above the disc valve acts on the disc valve, and disc valve is to be landed on the dish-shaped valve seat that is fixed on the pump barrel, given pump barrel with weight transmitting, thereby reduced the load of sucker rod, and then greatly reduced impulsive load to the harmful effect of sucker rod, the probability of rod parting is reduced greatly.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the structural representation of airlock-resistant oil pump of the present utility model, expression upstroke initial state;
Fig. 2 is the upstroke intermediateness of airlock-resistant oil pump of the present utility model;
Fig. 3 is the upstroke done state of airlock-resistant oil pump of the present utility model;
Fig. 4 is the down stroke initial state of airlock-resistant oil pump of the present utility model;
Fig. 5 is the down stroke intermediateness of airlock-resistant oil pump of the present utility model;
Fig. 6 is the down stroke done state of airlock-resistant oil pump of the present utility model.
The drawing reference numeral explanation:
1, pull bar 2, upper connection 3, dish-shaped valve bonnet 31, through hole
4, disc valve 5, seal ring 6, lifting short circuit 7, dish-shaped valve seat
8, plunger pressure ring 9, pump barrel 10, plunger 11, traveling valve
12, standing valve 121, standing valve pedestal 122, standing valve cover 123, standing valve ball
124, standing valve seat
Embodiment
Understand for technical characteristics of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
Fig. 1 is the structural representation of airlock-resistant oil pump of the present utility model.
As shown in Figure 1, the airlock-resistant oil pump that the utility model proposes has pump barrel 9, and the two ends of described pump barrel 9 are connected with standing valve 12 with lifting short circuit 6 respectively.Plunger 10 is arranged in the described pump barrel 9, and can move axially along described pump barrel 9.One pull bar 1 stretches in described lifting short circuit 6 and the plunger 10, and a disc valve 4 can be set on the described pull bar 1 movably, and is positioned at described plunger 10 tops, and a traveling valve 11 is arranged on the lower end of described plunger 10 and is fixedly connected with institute rheme bar 1 underpart.
Because disc valve 4 is to be nested with on pull bar 1, and traveling valve 11 is the bottoms that are fixed on pull bar 1, therefore when upstroke, traveling valve 11 can seal rapidly the bottom of plunger 10, during down stroke, traveling valve 11 is rapidly the bottom of opening plunger 10, overcome in the known technology because of the impact on pumping efficiency of oil pump of the gas lock phenomenon of γ-ray emission in the oil well pump.And on-fixed is connected between disc valve 4 and the pull bar 1, therefore effectively solved in down stroke that known technology exists and the upstroke exchange process impulsive load problems of too to pull bar, sucker rod, thereby reduced the probability of rod parting, and then ensured the normal production of crude oil.
Further, be provided with dish-shaped valve bonnet 3 and dish-shaped valve seat 7 in the described lifting short circuit 6, described disc valve 4 is between described dish-shaped valve bonnet 3 and dish-shaped valve seat 7.
In addition, described dish-shaped valve bonnet 3 is provided with a plurality of axial holes 31, and described disc valve 4 can seal described through hole 31.
A feasible embodiment is, also is arranged with plunger pressure ring 8 on the described pull bar 1, and described plunger pressure ring 8 is arranged on the bottom of described dish-shaped valve seat 7, and is positioned at described plunger 10 tops, and can seal described plunger 10.
Further, described standing valve 12 comprises the standing valve pedestal 121 that is connected with described pump barrel 9, be arranged on the standing valve seat 124 of described standing valve pedestal 121 bottoms, can be seated at the standing valve ball 123 of described standing valve seat 124, and be arranged in the described standing valve pedestal 121 and be positioned at the standing valve cover 122 of 123 ones in described standing valve ball.
For pull bar 1 can be separated with sucker rod easily, the upper end of pull bar 1 forms the boss that can be connected with the sucker rod connecting-and-unconnecting device.
In addition, the top of described lifting short circuit 6 is connected with upper connection 2.
In the specific embodiment, between described lifting short circuit 6, pump barrel 9 and the standing valve 12 for being threaded.
Described dish-shaped valve bonnet 3 and dish-shaped valve seat 7, standing valve cover 122 and standing valve seat 124 are threaded with the standing valve pedestal 121 of described lifting short circuit 6, standing valve 12 respectively.
Below in conjunction with a specific embodiment, further specify structure and the working principle of airlock-resistant oil pump of the present utility model.As shown in Figure 1, the upper end portion of pull bar 1 can be forged and be formed an external diameter greater than the boss of the pull bar body of rod, in order to be connected securely with the sucker rod connecting-and-unconnecting device, the lower end car of pull bar 1 has outside thread to connect traveling valve 11.The up and down two ends car that is arranged on the upper connection 2 that promotes short circuit 6 tops has internal thread, and connected pipes is convenient in its upper end, and its lower end is threaded with lifting short circuit 6.The lower end and pump barrel 9 upper ends that promote short circuit 6 are threaded connection, and the inner all cars of upper and lower end that promote short circuit 6 have internal thread.Dish valve bonnet 3 is threaded connection and is promoting short circuit 6 inner upper sections, dish valve seat 7 is threaded connection and is promoting short circuit 6 lower half portions, be set in disc valve 4 on the pull bar 1 between described dish-shaped valve seat 7 and dish-shaped valve bonnet 3, and described disc valve 4 is provided with O-ring seals 5 with pull bar 1 contacting part.The equal car in pump barrel 9 top and the bottom has outside thread, and its top is threaded connection with promoting short circuit 6, and its underpart and standing valve pedestal 121 are threaded connection.Standing valve cover 122 is threaded connection in standing valve pedestal 121 inside, and standing valve seat 124 is threaded connection in standing valve pedestal 121 bottoms.Standing valve ball 123 is arranged between standing valve cover 122 and the standing valve seat 124.The bottom car of standing valve pedestal 121 has outside thread with convenient other downhole tool that connects.Plunger 10 is set on the pull bar 1, can be arranged in the pump barrel with moving up and down, and between dish-shaped valve seat 7 and traveling valve 11.On described pull bar 1, also be arranged with plunger pressure ring 8, this plunger pressure ring 8 is between dish-shaped valve seat 7 and plunger 10 tops, it mainly plays and reduces upstroke process Crude Oil from the outflow of the slit between traveling valve and the plunger, to reduce the pressure of plunger inside in the upstroke process.
Please cooperate referring to Fig. 2 to Fig. 6, after complete of oil well operation is taken out, during upstroke on the pull bar 1 the moving cover of shipper pole parts thereon move upward, pull bar 1 drives when moving on the traveling valve 11, traveling valve 11 is resisted against rapidly the bottom of plunger 10, lower end closed with plunger 10, owing to be mechanical force start, therefore, elimination the impacts of plunger 10 interior gases on traveling valve 11 motion since plunger 10 on move the pressure that make in the pump barrel 9 and reduce, so that backing down standing valve ball 123, the crude oil of outside relatively high pressure enters in the pump barrel 9, such as Fig. 2 institute, because the barrier effect of standing valve cover 122, so that standing valve ball 123 can not further move up.Disc valve 4 is moving upward with pull bar 1 under the acting in conjunction of pull bar 1 frictional force and the crude oil that moves upward, and plunger pressure ring 8 is enclosed in the top of described plunger 10 all the time, plunger 10, improving constantly owing to the former oil pressure that enters by standing valve 12, then pushing drawing rod 1 and plunger 10, traveling valve 11 move on continuing, crude oil above the plunger pressure ring 8 is entered in the petroleum pipeline by the through hole 31 that arranges on the dish-shaped valve bonnet 3, when moving on the disc valve 4 when being resisted against dish-shaped valve bonnet 3 with the sealing of the through hole 31 on it, then upstroke is finished, as shown in Figure 3.
During down stroke, downward pushing drawing rod 1, under the acting in conjunction of crude oil in oil pipe and friction so that disc valve 4 be seated at rapidly on the dish-shaped valve seat 7, the gravity that is applied to the crude oil above the disc valve 4 is passed on the dish-shaped valve seat 7, and do not bear crude oil load on the pull bar 1, thereby so that the sucker rod that is connected with pull bar 1 only is subjected to the gravity of self gravitation and disc valve 4, and and crude oil between act on the gravity of crude oil on the traveling valve 11 in the frictional force that makes progress, plunger 10 that produce.Promotion lower travelling valve 11 at pull bar 1 moves down with pull bar 1, the lower end of rapid opening plunger 10, the utility model drives traveling valve 11 by pull bar 1 and moves up and down, namely, adopt mechanical type to open by force and close by force structure, overcome the plunger internal gas to the resistance that traveling valve moves up and down, eliminated the impact that gas is opened traveling valve 11.In addition, because the lifting of down pressure so that standing valve ball 123 moves down and is seated at rapidly on the standing valve seat 124, sees also Fig. 5.Under the oil pressure effect in pump barrel 9, plunger 10, plunger pressure ring 8 move down in the lump, and described traveling valve 11, plunger pressure ring 8 seal the upper/lower terminal of plunger 10 again, and as shown in Figure 6, down stroke finishes.
Airlock-resistant oil pump of the present utility model, by traveling valve 11 being fixed on the bottom of pull bar 1, be synchronized with the movement with pull bar 1, thereby under the drive of pull bar 1, mechanical type positive opening or the sealing of 11 pairs of plunger 10 lower ends of traveling valve have been realized, in down stroke, under the drag effect of crude oil, form speed difference between plunger 10 and the traveling valve 11, guaranteed that traveling valve can open rapidly, eliminated the impact that gas pressure is opened or closed traveling valve 11 in the plunger.In addition, because the utility model disc valve is connected with pull bar 1 on-fixed, but be placed on the pull bar 1, therefore, in upper and lower stroke transfer process, be applied to the former weight of oil on the disc valve 4, be to be applied on the dish-shaped valve seat 7 by disc valve 4, greatly reduce the impulsive load to pull bar 1, sucker rod, thereby reduced the rod parting probability, reduce the maintenance work amount in the crude oil production, further reduced cost of crude oil production.Therefore, the utlity model has and prevent " gas lock " (" vapor lock ") and reduce dual functions to the sucker rod impulsive load, be specially adapted to the higher oil well of gas content and the larger ultradeep well of impulsive load.
The above only is the schematic embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. an airlock-resistant oil pump is characterized in that, described airlock-resistant oil pump has pump barrel, and the two ends of described pump barrel are connected with standing valve with the lifting short circuit respectively; Plunger is arranged in the described pump barrel, and can move axially along described pump barrel; One pull bar stretches in described lifting short circuit and the plunger, and a disc valve can be set on the described pull bar movably, and is positioned at described plunger upper part, and a traveling valve is arranged on the lower end of described plunger and is fixedly connected with institute rheme bar underpart.
2. airlock-resistant oil pump as claimed in claim 1 is characterized in that, is provided with dish-shaped valve bonnet and dish-shaped valve seat in the described lifting short circuit, and described disc valve is between described dish-shaped valve bonnet and dish-shaped valve seat.
3. airlock-resistant oil pump as claimed in claim 2 is characterized in that, described dish-shaped valve bonnet is provided with a plurality of axial holes, and described disc valve can seal described through hole.
4. airlock-resistant oil pump as claimed in claim 2 is characterized in that, also is arranged with the plunger pressure ring on the described pull bar, and described plunger pressure ring is arranged on the bottom of described dish-shaped valve seat, and is positioned at described plunger upper part, and can seal described plunger.
5. airlock-resistant oil pump as claimed in claim 2 is characterized in that, described dish-shaped valve bonnet and dish-shaped valve seat are threaded with described lifting short circuit.
6. airlock-resistant oil pump as claimed in claim 1, it is characterized in that, described standing valve comprises the standing valve pedestal that is connected with described pump barrel, be arranged on the standing valve seat of described standing valve pedestal bottom, can be seated at the standing valve ball of described standing valve seat, and be arranged in the described standing valve pedestal and be positioned at the standing valve cover on described standing valve ball top.
7. such as each described airlock-resistant oil pump of claim 1 to 6, it is characterized in that the upper end of pull bar forms the boss that can be connected with the sucker rod connecting-and-unconnecting device.
8. airlock-resistant oil pump as claimed in claim 7 is characterized in that, the top of described lifting short circuit is connected with upper connection.
Such as claim to 1 to 5 each described airlock-resistant oil pumps, it is characterized in that, between described lifting short circuit, pump barrel and the standing valve for being threaded.
10. airlock-resistant oil pump as claimed in claim 6 is characterized in that, described standing valve cover and standing valve seat are threaded with described standing valve pedestal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328394 CN202789460U (en) | 2012-07-06 | 2012-07-06 | Oil pump preventing gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328394 CN202789460U (en) | 2012-07-06 | 2012-07-06 | Oil pump preventing gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789460U true CN202789460U (en) | 2013-03-13 |
Family
ID=47816732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220328394 Expired - Fee Related CN202789460U (en) | 2012-07-06 | 2012-07-06 | Oil pump preventing gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789460U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819139A (en) * | 2015-04-10 | 2015-08-05 | 中国石油天然气股份有限公司 | Oil-well pump with double load reduction and gas locking prevention functions |
| WO2016161611A1 (en) * | 2015-04-10 | 2016-10-13 | 中国石油天然气股份有限公司 | Air proof pumpjack with double load reduction |
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
-
2012
- 2012-07-06 CN CN 201220328394 patent/CN202789460U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819139A (en) * | 2015-04-10 | 2015-08-05 | 中国石油天然气股份有限公司 | Oil-well pump with double load reduction and gas locking prevention functions |
| WO2016161611A1 (en) * | 2015-04-10 | 2016-10-13 | 中国石油天然气股份有限公司 | Air proof pumpjack with double load reduction |
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130313 Termination date: 20210706 |