CN2170390Y - Crank drum long-stroke pumping unit - Google Patents
Crank drum long-stroke pumping unit Download PDFInfo
- Publication number
- CN2170390Y CN2170390Y CN 93223916 CN93223916U CN2170390Y CN 2170390 Y CN2170390 Y CN 2170390Y CN 93223916 CN93223916 CN 93223916 CN 93223916 U CN93223916 U CN 93223916U CN 2170390 Y CN2170390 Y CN 2170390Y
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- CN
- China
- Prior art keywords
- crank
- pumping unit
- cylinder
- flexible member
- drum
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a crank drum long-stroke pumping unit which belongs to the ground equipment of mechanical oil exploitation. A crank is provided with a drum and an extended range wheel which rotate coaxially and synchronously. When the crank rotates, the drum makes revolution and rotation under the diversion of flexible members and the action of the extended range wheel, a sucker rod makes periodic seesaw composite motion by means of the flexible members fixed on the outer circumference of the drum, and thus the long stroke is actualized. The utility model which uses mechanical direct balance and crank balance has the advantages of long stroke, simple structure, large load and favorable balancing effect, and is suitable for the exploitation of deep wells, large capacity and thick oil.
Description
The utility model relates to crank-drum long-stroke pumping unit, belongs to a kind of ground installation of mechanical oil recovery.
Pumping unit is one of capital equipment in the petroleum production.For improving the production fluid amount, need the pumping unit that load is big, jig frequency is low, stroke is long.China's compound head sheave long stroke pumping unit of patent CN2067772.U is wherein a kind of, and it can realize long stroke, but the fuselage top is provided with big or small head sheave, and top-heavy, causes complete machine weight obviously to increase, and energy-saving effect is not good enough.Also have China patent CN2108793U epicyclic complex motion type beam pumping unit with long stroke, because of its rocking bar is bigger, shortcomings such as manufacture cost height.
The purpose of this utility model is to overcome above-mentioned shortcoming of the prior art, and provide a kind of be suitable for loading big, stroke is long, safe and reliable, in light weight, the crank-drum long-stroke pumping unit of good energy-conserving effect.
The utility model is realized with following proposal: a kind of by base (1), fuselage (2), motor (22), retarder (20), crank (14), increase journey wheel (13), cylinder (19), crossbeam (12), flexible member (4,7,9,13), head sheave (10), equilibrium block (8) crankshaft balance weight (15), the crank-drum long-stroke pumping unit that rope hanger (6) is formed, it is characterized in that this pumping unit is on the fixing crank (14) in the two ends of retarder (20) output shaft, arrange cylinder (19) symmetrically and increase journey wheel (18), it is big or equal that cylinder (19) diameter ratio increases journey wheel (18) diameter, and same one of coaxial (17) synchronous rotation.Being fixed in flexible member (7) on the rope hanger (6) walks around head sheave (10) with (9) and links to each other with equilibrium block (8) with crossbeam (12) respectively.One end of both sides flexible member (4) is connected to the node (16) on cylinder (19) excircle separately, and the other end is synchronously walked around its excircle along clockwise direction and linked to each other with crossbeam (12).One end of both sides flexible member (13) is linked to the node (3) that increases separately on journey wheel (18) excircle respectively, and the other end is synchronously walked around its excircle and fuselage (2) hinged (11) in the counterclockwise direction.
Working principle in the technical solutions of the utility model is: drive retarder (20) gear transmission by motor (22), driving crank (14) rotates, crank rotates and makes cylinder (19) is that center of rotation rotates (i.e. revolution) with reducer output shaft axle center (21), drives sucker rod (5) by flexible member (4), crossbeam (12), flexible member (7) and rope hanger (6) and makes periodically straight line motion up and down reciprocatingly; Be center of rotation rotate (being rotation) by increasing journey wheel (18) and being subjected to the cylinder (19) that pins down of flexible member (13) with axle center (17) again, to drive sucker rod (5) straight line motion down that closes of writing in reply, therefore, rod stroke has obtained increase, has realized long stroke.When crank (14) when doing uniform rotation cylinder (19) do rotation to drive sucker rod be straight line motion at the uniform velocity up and down reciprocatingly, only there is cylinder to make motion parts that revolution driven and is uniform motion in a straight line not, thereby greatly reduce the accekeration of pumping unit suspension point after the two synthesizes.
Balance sysmte in the technical solutions of the utility model is to adopt direct balance of mechanical type and crank balance.Equilibrium block (8) is directly linked to each other with sucker rod (5) load by flexible member (9), so the load that is acted on the flexible member (4) is the difference of the two.Simultaneously, by the correct levelling of crankshaft balance weight (15) and equilibrium block (8), just can make pumping unit under various operating modes, obtain good balance.
The available wire rope of flexible member in the technical solutions of the utility model (4,7,9,13), adhesive tape or chain; Increase journey wheel (18) and flexible member (13) and use gear (23) and fixed gear (24) to replace respectively, as shown in Figure 2; Cylinder (19) end face and increase journey wheel (18) and also can make sprocket wheel (25,26), as shown in Figure 3.
Adjust length of stroke in the technical solutions of the utility model and be achieved in that the diameter that changes cylinder (19) and increase journey wheel (18) and the distance between ratio and change cylinder (19) axle center (17) and the crank center of rotation (21) thereof just can change length of stroke.
As fully visible, the utility model had both had simple in structure, and was safe and reliable, and advantage easy to maintenance has again that in light weight, balance is reliable, good energy-conserving effect, can satisfy the big discharge capacity suction of oil field long stroke requirement.
Description of drawings:
Fig. 1 is the structural representation of the utility model crank-drum long-stroke pumping unit.
Fig. 2 is the structural representation that replaces increasing journey wheel (18) and flexible member (13) in the technical solutions of the utility model with gear (23,24).
Fig. 3 increases journey to take turns the structural representation that the end face of (18) and cylinder (19) changes sprocket wheel (26,25) in the technical solutions of the utility model.
Number in the figure explanation: (1) base, (2) fuselage, (3,16) node, (4,7,9,13) flexible member, (5) sucker rod, (6) rope hanger, (8) equilibrium block, (10) head sheave, (11) articulating point, (12) crossbeam, (14) crank, (15) crankshaft balance weight, (17) cylinder axis, (18) increase journey wheel, (19) cylinder, (20) retarder.(21) reducer output shaft axle center-crank rotating center, (22) motor, (23) gear, (24) fixed gear, (25,26) sprocket wheel.
Embodiment: with reference to Fig. 1, Fig. 2, Fig. 3, front end at base (1) is installed fuselage (2), head sheave (10) is installed at the fuselage top, at base rear end motor (22), retarder (20) are installed, cylinder (19) are installed symmetrically on reducer output shaft (21) two overhung cranks (14) with increasing journey wheel (18) and crankshaft balance weight (15).Flexible member (7) adopts wire rope, flexible member (4,9,13) adopts board-like chain, board-like chain (9) one ends and sucker rod (5) join, the other end is walked around head sheave (10) and is linked to each other with equilibrium block (8), wire rope (7) one ends link to each other with sucker rod (5), and the other end is walked around head sheave (10) and linked to each other with crossbeam (12).One end of the board-like chains in both sides (4) is linked to the node (16) on cylinder (19) excircle separately respectively, and the other end is synchronously walked around its excircle along clockwise direction and linked to each other with crossbeam (12).One end of the board-like chains in both sides (13) is linked to the node (3) that increases separately on journey wheel (18) excircle respectively, and the other end is synchronously walked around its excircle and fuselage (2) hinged (11) in the counterclockwise direction.When motor (22) drives retarder (20) gear transmission, driving crank (14) rotates, pining down and increase under the effect of journey wheel (18) by board-like chain (13), cylinder (19) is made revolution and spinning motion, and make board-like chain (4) periodically strain repeatedly and decontrol on the one hand, periodically go up on the other hand and back and forth twine and disengagement at cylinder (19), through crossbeam (12), head sheave (10), wire rope (7) and rope hanger (6) sucker rod (5) is made straight line motion up and down reciprocatingly again, to reach from the purpose of oil well suction crude oil.Equilibrium block (8) is made up of several balance fritters, available increase and decrease balance fritter number is adjusted direct balance, adjust crankshaft balance weight (15) again and reach counterbalance effect preferably, adjust the axle center (17) of cylinder (19) and the distance of crank center of rotation (21) and change length of stroke.
Claims (3)
1, be used for the crank-drum long-stroke pumping unit that recovers the oil in the oil field a kind of the composition, it is characterized in that by base (1), fuselage (2), motor (22), retarder 20 cranks (14), crossbeam (12), head sheave (10):
A. the cylinder (19) of coaxial (17), consubstantiality is installed symmetrically and is increased journey wheel (18) on the fixing crank (14) in retarder (20) output shaft two ends, it is big or equal that the diameter of cylinder ratio increases the journey wheel diameter,
B. being fixed in cylinder (19) excircle that the both sides flexible member (4) on the node (16) synchronously walks around separately along clockwise direction links to each other with crossbeam (12); Flexible member (7) one ends are connected with crossbeam (12), and the other end is walked around head sheave (10) and linked to each other with sucker rod (5) through rope hanger (6); Be fixed in both sides flexible member (13) on the node (3) synchronously walk around in the counterclockwise direction separately increase journey wheel (18) and fuselage (2) hinged (11).
2, crank-drum long-stroke pumping unit according to claim 1, it is characterized in that increasing journey wheel (18) and flexible member (13) can substitute with gear (23) and fixed gear (24) respectively.
3, crank-drum long-stroke pumping unit according to claim 1 increases journey wheel (18) and cylinder (19) end face can be made sprocket wheel (25,26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93223916 CN2170390Y (en) | 1993-09-06 | 1993-09-06 | Crank drum long-stroke pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93223916 CN2170390Y (en) | 1993-09-06 | 1993-09-06 | Crank drum long-stroke pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2170390Y true CN2170390Y (en) | 1994-06-29 |
Family
ID=33802097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93223916 Expired - Fee Related CN2170390Y (en) | 1993-09-06 | 1993-09-06 | Crank drum long-stroke pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2170390Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412461A (en) * | 2018-03-13 | 2018-08-17 | 张繁欣 | A kind of roller sprocket composite distance increasing formula large size pumping unit |
-
1993
- 1993-09-06 CN CN 93223916 patent/CN2170390Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412461A (en) * | 2018-03-13 | 2018-08-17 | 张繁欣 | A kind of roller sprocket composite distance increasing formula large size pumping unit |
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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 |