CN202228321U - Hollow circulation oil well pump - Google Patents
Hollow circulation oil well pump Download PDFInfo
- Publication number
- CN202228321U CN202228321U CN2011203585485U CN201120358548U CN202228321U CN 202228321 U CN202228321 U CN 202228321U CN 2011203585485 U CN2011203585485 U CN 2011203585485U CN 201120358548 U CN201120358548 U CN 201120358548U CN 202228321 U CN202228321 U CN 202228321U
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- China
- Prior art keywords
- valve
- connecting rod
- pump
- plunger
- oil
- 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
A hollow circulation oil well pump comprises a valve body, a seal device, an oil outlet valve, an oil inlet valve, a seal connecting rod, a pump cylinder, a plunger, a hollow rod and a guide cylinder. The oil outlet valve and the oil inlet valve which are of circulation structure are installed in the valve body. The seal device is installed above the oil outlet valve, and the lower portion of the seal device is connected with the pump cylinder. The upper portion of the pump cylinder is provided with a communication hole located below the oil outlet valve and above the oil inlet valve, the seal connecting rod is arranged in the seal device and sealed with the seal device in a matching mode, and the lower portion of the seal connecting rod is connected with the plunger in matching seal with the pump cylinder. The lower portion of the plunger is connected with the hollow rod, the guide cylinder is sleeved outside the pump cylinder, and the upper portion of the guide cylinder is connected with the lower portion of the valve body. A cavity is reserved between the pump cylinder and the seal connecting rod, the inner sides of the seal connecting rod, the plunger and the hollow rod are hollow, and heating cables can be lowered into the seal connecting rod, the plunger and the hollow rod to heat thick oil under the pump. The oil inlet valve and the oil outlet valve adopt a common spherical structure, and the valve ball can work reliably in the thin oil and meet the requirements of production of thin oil wells heating under the pump.
Description
Technical field
The utility model relates to the underground equipment that oil field pumping well is used, and is a kind of hollow circulation oil well pump.
Background technique
When the crude oil in the oil well was very thick, viscous crude was difficult to get in the pump, and conventional pump is difficult to viscous crude is drawn up, and needed under the pump heating could viscous crude be extracted out to this thick oil well.Existing technology such as the hollow oil well pump of one Chinese patent application 93221242.5 reaction types, its little pump are last, and big pump is following, and it is bigger to implement difficulty.And for example one Chinese patent application 94230220.6 hollow rods are got over the pump heating oil extraction device, and its pump valve is an annular cone, lean on sucker rod to drive, and the sealing of pump valve is poor, and pump efficiency is low, and impact is arranged during oil pumping, influences the working life of oil pumping system.
Summary of the invention
The purpose of the utility model is a kind of hollow circulation oil well pump of design, and it can be heated cable under pump to viscous crude, reduces viscosity of thickened oil, is convenient to exploitation.
The purpose of the utility model is achieved in that and comprises valve body, seal arrangement, outlet valve, oiling valve, sealing connecting rod, pump barrel, plunger, hollow stem, guide shell, and outlet valve, oiling valve are installed in the valve body, and outlet valve, oiling valve are circulation structure; Seal arrangement is installed on the outlet valve, and the seal arrangement bottom connects pump barrel, and linked hole is arranged at pump barrel top; Linked hole is under the outlet valve on the oiling valve, is the sealing connecting rod in the seal arrangement, sealing connecting rod and the supporting sealing of seal arrangement; Sealing connecting rod bottom is connected with plunger, the supporting sealing of plunger and pump barrel, and the plunger bottom connects hollow stem; The outer suit guide shell of pump barrel; Guide shell top is connected with valve body lower portion, between pump barrel and the sealing connecting rod cavity is arranged, sealing connecting rod, plunger, hollow stem inner hollow.
The beneficial effect of the utility model is: sealing connecting rod, plunger, hollow stem inner hollow; Can be lowered to heating cable; To viscous crude heating under the pump, oiling valve, outlet valve have adopted spheroidal structure commonly used, and valve ball is reliable operation in viscous crude; Easy to use, can satisfy the demand to the pump production of the thick oil well of heating down.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with Fig. 1 the embodiment of the utility model is described.
Can know that by figure the embodiment of the utility model comprises valve body 1, seal arrangement 2, outlet valve 3, oiling valve 5, sealing connecting rod 6, pump barrel 8, plunger 9, hollow stem 10, guide shell 11, and outlet valve 3, oiling valve 5 are installed in the valve body 1; Outlet valve 3, oiling valve 5 are circulation structure, and seal arrangement 2 is installed on the outlet valve 3, and seal arrangement 2 bottoms connect pump barrel 8; Linked hole 4 is arranged at pump barrel 8 tops, and linked hole 4 is under the outlet valve 3 on the oiling valve 5, is sealing connecting rod 6 in the seal arrangement 2; Sealing connecting rod 6 and seal arrangement 2 supporting sealings; Sealing connecting rod 6 bottoms are connected with plunger 9, plunger 9 and pump barrel 8 supporting sealings, and plunger 9 bottoms connect hollow stem 10; Pump barrel 8 outer suit guide shells 11; Guide shell 11 tops are connected with valve body 1 bottom, between pump barrel 8 and the sealing connecting rod 6 cavity 7 are arranged, and cavity 7 is through linked hole 4 and oiling valve top, outlet valve bottom UNICOM.Oiling valve 5, outlet valve 3 adopt spheroidal structure commonly used.
Connect oil pipe on the pump on the valve body 1, hollow stem 10 bottoms connect plug, connect hollow rod on the sealing connecting rod 6, in hollow rod, sealing connecting rod 6, plunger 9, hollow stem 10, are lowered to heating cable, to realizing the pump heating after the cable energising.During down stroke, sealing connecting rod 6, plunger 9, hollow stem 10 are descending, and cavity 7 volumes increase, and pressure descends, and outlet valve 3 cuts out, and oiling valve 5 is opened, and the well liquid after heating is from the oiling valve 5 arrival cavitys 7 of flowing through of the annular space between guide shell 11 and the pump barrel 8.During upstroke, sealing connecting rod 6, plunger 9, hollow stem 10 are up, and cavity 7 volumes reduce, and pressure raises, and outlet valve 3 is opened, and oiling valve 5 cuts out, and the well liquid are expelled on the pump on the valve body 1 oil pipe by extraction in the cavity 7.
Claims (1)
1. a hollow circulation oil well pump comprises valve body (1), seal arrangement (2), outlet valve (3), oiling valve (5), sealing connecting rod (6), pump barrel (8), plunger (9), hollow stem (10), guide shell (11), it is characterized in that: outlet valve (3), oiling valve (5) are installed in the valve body (1); Outlet valve (3), oiling valve (5) are circulation structure, and seal arrangement (2) is installed on the outlet valve (3), and seal arrangement (2) bottom connects pump barrel (8); Linked hole (4) is arranged at pump barrel (8) top, and linked hole (4) is under the outlet valve (3) on the oiling valve (5), is sealing connecting rod (6) in the seal arrangement (2); Sealing connecting rod (6) and the supporting sealing of seal arrangement (2); Sealing connecting rod (6) bottom is connected with plunger (9), plunger (9) and the supporting sealing of pump barrel (8), and plunger (9) bottom connects hollow stem (10); The outer suit guide shell of pump barrel (8) (11); Guide shell (11) top is connected with valve body (1) bottom, between pump barrel (8) and the sealing connecting rod (6) cavity (7) is arranged, sealing connecting rod (6), plunger (9), hollow stem (10) inner hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203585485U CN202228321U (en) | 2011-09-20 | 2011-09-20 | Hollow circulation oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203585485U CN202228321U (en) | 2011-09-20 | 2011-09-20 | Hollow circulation oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228321U true CN202228321U (en) | 2012-05-23 |
Family
ID=46078908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203585485U Expired - Fee Related CN202228321U (en) | 2011-09-20 | 2011-09-20 | Hollow circulation oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228321U (en) |
-
2011
- 2011-09-20 CN CN2011203585485U patent/CN202228321U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20120920 |