CN220849972U - Pump cylinder self-control liquid-discharging type high-efficiency environment-friendly sand-proof oil pump - Google Patents
Pump cylinder self-control liquid-discharging type high-efficiency environment-friendly sand-proof oil pump Download PDFInfo
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- CN220849972U CN220849972U CN202322509352.7U CN202322509352U CN220849972U CN 220849972 U CN220849972 U CN 220849972U CN 202322509352 U CN202322509352 U CN 202322509352U CN 220849972 U CN220849972 U CN 220849972U
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- 238000007599 discharging Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 49
- 239000004576 sand Substances 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract 1
- 239000010779 crude oil Substances 0.000 description 10
- 238000005086 pumping Methods 0.000 description 8
- 239000003129 oil well Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a pump barrel self-control liquid-discharging type efficient environment-friendly sand-preventing oil pump, which comprises a pump barrel assembly, a plunger assembly, an outer pipe assembly and a fixed valve assembly, wherein the pump barrel assembly is connected with the plunger assembly; the pump cylinder assembly comprises an upper pump cylinder joint, a pump cylinder and a lower pump cylinder joint, and the length of the pump cylinder is L 1; the plunger assembly comprises an upper oil outlet joint, a closed valve cover, a traveling valve ball, a traveling valve seat, a valve seat joint, a plunger and a valve seat pipe plug, the length of the plunger assembly is L, and the length of the plunger is L 3; the outer pipe assembly comprises an outer pipe and a coupling, the length of the outer pipe is L 2, the outer pipe further comprises a liquid discharge valve assembly arranged in the middle of the pump cylinder, wherein L 3>L1、L1/2+L2 is larger than L, and when the plunger assembly falls down to strike the liquid discharge valve assembly and then falls into the outer pipe, the annular space of the rod pipe and the annular space of the oil sleeve can be communicated. After the utility model is applied, when the sucker rod string breaks off and breaks down after long-term use, the plunger assembly falls to the fixed valve, and the annular space of the rod tube and the annular space of the oil sleeve are still in a communication state.
Description
Technical Field
The utility model relates to an oil-well pump for extracting crude oil from an oil well, in particular to a pump barrel self-control liquid leakage type efficient environment-friendly sand-prevention oil-well pump.
Background
When the oil pumping pump pumps crude oil, power is transmitted from the ground oil pumping machine to the underground oil pump through the oil pumping rod column, so that the plunger assembly of the oil pumping pump reciprocates up and down to lift the underground crude oil to the ground along the oil pipe. During the up stroke, the plunger goes up, the volume of the lower pump cavity below the plunger is increased, the pressure is reduced, the fixed valve is opened under the action of the up-down pressure difference, crude oil enters the lower pump cavity, meanwhile, the traveling valve is closed under the action of the up-down pressure difference, and crude oil in the upper pump cavity above the plunger is discharged to the ground along the oil pipe. Similarly, during the downstroke, the plunger descends, compresses crude oil between the fixed valve and the traveling valve, closes the fixed valve, opens the traveling valve, and feeds crude oil into the upper pump cavity. The plunger is up and down, and the oil pump completes one cycle. The sucker rod string moves up and down repeatedly in this way, and the circulation is repeated, so that underground crude oil is discharged to the ground from underground, and the oil pumping function is realized.
For a rod pumping system, most oil pumps used for oil wells are conventional whole-barrel oil pumps, well liquid is filled in a pipe column during operation, a large amount of well liquid splashes everywhere every time an oil pipe is discharged, part of well liquid flows into an oil sleeve annulus, and most well liquid flows into the ground of a well site, so that crude oil loss and sewage treatment cost are caused, the environment is polluted, the well site operation environment is severe, construction difficulty and unsafe factors of well repair operation are increased, and meanwhile, the environmental protection cost is increased.
At present, the oil drain device is generally additionally arranged on the upper part of the fixed valve of the whole barrel type oil pump, and when in operation, the oil drain hole of the oil drain device is opened to be communicated with the inner channel and the outer channel of the oil pipe, so that the annular space of the rod pipe is communicated with the annular space of the oil sleeve, and liquid reserved in the oil pipe is discharged into the well when the pipe column is lifted, thereby having the effects of safety and cleaning construction operation and protecting the environment from being polluted by crude oil. However, the whole barrel oil pump still has the following problems: when the sucker rod string is used for a long time and breaks off, the plunger assembly falls to the upper part of the oil drain, so that the oil drain cannot be started, or when sand is produced from an oil well and scale is serious, impurities such as sand grains, scale blocks and the like can block the oil drain, the oil drain can not work normally, only a jet lifting pipe string can be carried in maintenance, well fluid can be caused to flow into the ground of a well site, and the environment is polluted.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a pump cylinder self-control liquid-discharging type efficient environment-friendly sand-preventing oil pump.
In order to solve the technical problems, the pump barrel self-control liquid leakage type efficient environment-friendly sand prevention oil pump comprises a pump barrel assembly, a plunger assembly, an outer pipe assembly and a fixed valve assembly; the pump cylinder assembly comprises an upper pump cylinder connector, a pump cylinder and a lower pump cylinder connector, and the length of the pump cylinder is L 1; the plunger assembly comprises an upper oil outlet joint, a closed valve cover, a traveling valve ball, a traveling valve seat, a valve seat joint, a plunger and a valve seat pipe plug, the length of the plunger assembly is L, and the length of the plunger is L 3; the outer tube assembly include outer tube and coupling, the length of outer tube is L 2, its characterized in that: the hydraulic pump further comprises a liquid release valve assembly arranged in the middle of the pump cylinder, wherein L 3> L1、L1/2+ L2 is larger than L, and when the plunger assembly falls down to strike the liquid release valve assembly and then falls into the outer pipe, the communication between the rod pipe annular space and the oil sleeve annular space can be realized.
As an improvement of the utility model, the liquid discharge valve assembly comprises a cylindrical liquid discharge valve seat welded on the wall of the middle part of the pump cylinder, a cylindrical valve core extending into the pump cylinder is clamped in the liquid discharge valve seat through a sealing gasket, and a gland is screwed on the liquid discharge valve seat; a circumferential groove is formed in the outer wall of a cylindrical valve core section positioned in the wall of the pump cylinder, a liquid leakage hole which extends downwards from the top of the valve core to the lower part of the groove is formed in the cylindrical valve core, a liquid leakage through hole which is communicated with the liquid leakage hole is correspondingly formed in the gland, and when the plunger assembly falls down to strike the liquid leakage valve assembly, the valve core can be broken along the circumferential groove.
Further, a filter screen is arranged between the gland and the drain valve seat.
Still further, the length of the pump cylinder is 900 mm, 1200 mm, 1500 mm, or 1800 mm; the length of the plunger is 3000 mm-9000 mm.
The utility model has the following beneficial technical effects: firstly, the length of the plunger is larger than that of the pump barrel, the sum of 1/2 length of the pump barrel and the length of the outer tube is larger than that of the plunger assembly, when the plunger assembly falls down to strike the drain valve assembly and then falls to the position of the fixed valve from the bottom of the outer tube, the drain hole cannot be covered by the plunger assembly, communication between a rod pipe annular space and an oil sleeve annular space can be achieved, the condition that well fluid flows into the ground of a well site when the pipe column is lifted in maintenance operation cannot occur, and the phenomenon that the well fluid pollutes the environment cannot be caused; second, the length of plunger is greater than the length of pump cylinder, in oil pumping process, the short pump cylinder is sealed all the time to long plunger, and the sand grain in the tubular column is difficult for depositing between short pump cylinder and long plunger, has reached sand control purpose, goes up the oil joint and exposes outside the pump cylinder all the time simultaneously, and the oil section is not limited by the pump cylinder internal diameter, has reduced the oil resistance, has improved the ability of whole liquid carrying sand for the fluid of discharging to the pump top is brought most less sand grain to ground. Thirdly, after the filter screen is designed on the liquid discharge valve assembly, the liquid discharge valve assembly is in compression connection with the valve seat by the gland and is fixed at the outlet of the valve core, so that the phenomenon of pump blockage caused by sucking sand in the air of the oil collar into the oil pump can be prevented in the oil pumping process.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of the pump cylinder self-control liquid-discharging type efficient environment-friendly sand-preventing oil pump.
Fig. 2 is a schematic structural view of the pump barrel self-control liquid-discharging type high-efficiency environment-friendly sand control oil pump shown in fig. 1 broken into four parts along the line X-X, Y-Y, Z-Z in fig. 1 from the point of easy to see the structures of the various parts in fig. 1.
FIG. 3 is a schematic view of the structure of the drain valve assembly of the present utility model when installed in the middle of the pump barrel.
Detailed Description
Referring to fig. 1-3, the pump barrel self-control liquid discharging type efficient environment-friendly sand prevention oil pump comprises a pump barrel assembly 1, a plunger assembly 2, an outer pipe assembly 3 and a fixed valve assembly 4; the pump barrel assembly 1 comprises an upper pump barrel joint 101, a pump barrel 102 and a lower pump barrel joint 103, wherein the length of the pump barrel is L 1; the plunger assembly 2 comprises an upper oil outlet joint 201, a closed valve cover 202, a traveling valve ball 203, a traveling valve seat 204, a valve seat joint 205, a plunger 206 and a valve seat pipe plug 207, wherein the length of the plunger assembly is L, and the length of the plunger is L 3; the outer tube assembly 3 include outer tube 301 and coupling 302, the length of outer tube is L 2, the fixed valve assembly 4 includes fixed valve housing 401, fixed valve ball 402, fixed valve seat 403 and fixed valve seat joint 404, its characterized in that: the hydraulic pump further comprises a liquid discharge valve assembly 5 arranged in the middle of the pump barrel 102, the length L 3 of the plunger 206 is larger than the length L 1 of the pump barrel, namely L 3> L1, the sum of the length 1/2 of the pump barrel and the length of the outer pipe is larger than the length of the plunger assembly, namely L 1/2+ L2 > L, and when the plunger assembly falls into the outer pipe after striking the liquid discharge valve assembly, the communication between the rod pipe annular space and the oil sleeve annular space can be realized. The liquid discharge valve assembly 5 comprises a cylindrical liquid discharge valve seat 51 welded on the wall of the middle part of the pump cylinder 102, a cylindrical valve core 53 extending into the pump cylinder is clamped in the liquid discharge valve seat through a sealing gasket 52, and a gland 54 is screwed on the liquid discharge valve seat; the outer wall of the cylindrical valve core section positioned in the wall of the pump cylinder is provided with a circumferential groove 531, the cylindrical valve core is internally provided with a liquid leakage hole 532 which extends downwards from the top of the valve core to the lower part of the groove, correspondingly, the gland is provided with a liquid leakage through hole 541 communicated with the liquid leakage hole, and when the plunger assembly falls down to strike the liquid leakage valve assembly, the valve core can be broken along the circumferential groove. A filter screen 55 is arranged between the gland 54 and the drain valve seat 51. The length of the pump cylinder 102 is 900 mm, 1200 mm, 1500 mm or 1800 mm; the length of the plunger 206 is 3000 mm-9000 mm.
It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (4)
1. The pump barrel self-control liquid-discharging type efficient environment-friendly sand-preventing oil pump comprises a pump barrel assembly (1), a plunger assembly (2), an outer pipe assembly (3) and a fixed valve assembly (4); the pump barrel assembly (1) comprises an upper pump barrel joint (101), a pump barrel (102) and a lower pump barrel joint (103), and the length of the pump barrel is L 1; the plunger assembly (2) comprises an upper oil outlet joint (201), a closed valve cover (202), a traveling valve ball (203), a traveling valve seat (204), a valve seat joint (205), a plunger (206) and a valve seat pipe plug (207), wherein the length of the plunger assembly is L, and the length of the plunger is L 3; the outer tube assembly (3) include outer tube (301) and coupling (302), the length of outer tube is L 2, its characterized in that: the hydraulic oil pump further comprises a liquid release valve assembly (5) arranged in the middle of the pump barrel (102), wherein L 3> L1、L1/2+ L2 is larger than L, and when the plunger assembly falls down to strike the liquid release valve assembly and then falls into the outer pipe, the communication between the rod pipe annular space and the oil sleeve annular space can be realized.
2. The pump cylinder self-control liquid discharge type efficient environment-friendly sand control oil pump as claimed in claim 1, wherein: the liquid discharge valve assembly (5) comprises a cylindrical liquid discharge valve seat (51) welded on the middle cylinder wall of the pump cylinder (102), a cylindrical valve core (53) extending into the pump cylinder is clamped in the liquid discharge valve seat through a sealing gasket (52), and a gland (54) is screwed on the liquid discharge valve seat; a circumferential groove (531) is formed in the outer wall of the cylindrical valve core section positioned in the wall of the pump cylinder, a liquid leakage hole (532) which downwards extends to the lower part of the groove from the top of the valve core is formed in the cylindrical valve core, a liquid leakage through hole (541) which is communicated with the liquid leakage hole is correspondingly formed in the gland, and when the plunger assembly falls down to strike the liquid leakage valve assembly, the valve core can be broken along the circumferential groove.
3. The pump cylinder self-control liquid discharge type efficient environment-friendly sand control oil pump as claimed in claim 2, wherein: a filter screen (55) is arranged between the gland (54) and the drain valve seat (51).
4. The pump cylinder self-control liquid discharge type efficient environment-friendly sand control oil pump as claimed in claim 1, wherein: the length of the pump cylinder (102) is 900 mm, 1200, mm, 1500, mm or 1800 and mm; the length of the plunger (206) is 3000 mm-9000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322509352.7U CN220849972U (en) | 2023-09-15 | 2023-09-15 | Pump cylinder self-control liquid-discharging type high-efficiency environment-friendly sand-proof oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322509352.7U CN220849972U (en) | 2023-09-15 | 2023-09-15 | Pump cylinder self-control liquid-discharging type high-efficiency environment-friendly sand-proof oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220849972U true CN220849972U (en) | 2024-04-26 |
Family
ID=90782737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322509352.7U Active CN220849972U (en) | 2023-09-15 | 2023-09-15 | Pump cylinder self-control liquid-discharging type high-efficiency environment-friendly sand-proof oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220849972U (en) |
-
2023
- 2023-09-15 CN CN202322509352.7U patent/CN220849972U/en active Active
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