CN204960896U - Chain type pumping unit - Google Patents

Chain type pumping unit Download PDF

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Publication number
CN204960896U
CN204960896U CN201520737935.8U CN201520737935U CN204960896U CN 204960896 U CN204960896 U CN 204960896U CN 201520737935 U CN201520737935 U CN 201520737935U CN 204960896 U CN204960896 U CN 204960896U
Authority
CN
China
Prior art keywords
chain
crown sheave
hydraulic
pumping unit
frame
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
Application number
CN201520737935.8U
Other languages
Chinese (zh)
Inventor
徐建宁
朱海琦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Shiyou University
Original Assignee
Xian Shiyou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Shiyou University filed Critical Xian Shiyou University
Priority to CN201520737935.8U priority Critical patent/CN204960896U/en
Application granted granted Critical
Publication of CN204960896U publication Critical patent/CN204960896U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a chain type pumping unit, it relates to oil mining machines technical field, the top of frame is provided with the crown sheave, one side of crown sheave is provided with the leading wheel, the below of crown sheave is provided with the guide pulley, the sucker rod is connected to first chain and second chain one end, the second chain other end is through the guide pulley, it the wheel connection is in the frame upper end, the first chain other end is through the crown sheave, the leading wheel is connected with outer weight box, piston rod and hydraulic pressure monomer pillar, it is connected with the electro -hydraulic reversing valve to connect hydraulic pressure monomer pillar, variable oil pump and electro -hydraulic reversing valve, the energy storage ware is connected, the utility model discloses effectively having solved the problem of viscous crude well exploitation inefficiency, having reduced the mechanical wear of number of cycles and pump valve, sealing member, reduced the fatigue effect of part, longe -lived, the messenger of two gravity balance mechanisms complete machine atress is reasonable, operates steadily.

Description

Chain pumping unit
[technical field]
The utility model relates to oil exploitation field of mechanical technique, is specifically related to a kind of chain pumping unit.
[background technology]
Oil pumper is a kind of machinery equipment of recover petroleum, be commonly called as " machine of kowtowing ", the way of being pressurizeed by oil well pump makes oil go out well, at present, at the oil recovery machiner that China oil field uses, majority uses beam type sucker rod pumping machine, beam pumping unit is a kind of quadric chain of distortion, its complete machine structure feature is as a frame balance, one end is oil pumping load, the other end is counterweight load, for support, if oil pumping load is equal with the moment of torsion that balancing load is formed or change is consistent, so oil pumper just can be made to work uninterruptedly with very little power, during work, the transmission of motor is through gearbox, crank-link mechanism becomes moving up and down of horse head, horse head is through polished rod, sucker rod drives the plunger of down-hole deep well pump to move up and down, thus constantly the crude oil in well is extracted out pit shaft, oil well pump belongs to a kind of reciprocating pump of special shape, power is delivered to down-hole from ground through sucker rod, the piston of oil well pump is pumped, oil well PetroChina Company Limited. is given rise to ground along oil pipe, when oil pumper upstroke: rod string is with piston upwards, travelling valve on piston cuts out by valve ball deadweight and overpressure effect, in pump, because volume increases, pressure reduces, be opened under the effect of standing valve difference of pressure in annular space head of liquid and pump, well Crude Oil enters pump, discharge liquid at well head simultaneously, down stroke: rod string moves downward with piston, standing valve cuts out, in piston press pump, liquid makes pressure in pump be elevated to higher than above piston during pressure, travelling valve is backed down, go in the oil pipe that in pump, liquid is discharged to above piston, piston one on the other, oil well pump completes and once circulates, so go round and begin again, repeat circulation, but at heavy crude producing, high solidifying oil, deep-seated oil, particularly during high water cut oil field, use conventional pumping unit cannot be more economical, effectively exploit.
[summary of the invention]
The purpose of this utility model is defect for prior art and deficiency, provides the chain pumping unit that a kind of structure is simple, reasonable in design, easy to use.
For achieving the above object, the technical solution adopted in the utility model is: chain pumping unit, comprises directive wheel, outer ballast box, electro-hydraulic reversing valve, accumulator, oil pump, sucker rod, hydraulic single prop, ballast box, guide wheel, crown sheave, the first chain and the second chain; Described crown sheave is arranged on frame top, the side of crown sheave is provided with directive wheel, the below of crown sheave is provided with guide wheel, first chain and second chain one end connecting with pumping rod, the second chain other end is once connected to frame upper end through guide wheel and crown sheave, and the first chain other end is connected with outer ballast box with directive wheel through crown sheave, and guide wheel is arranged with hydraulic single prop, hydraulic single prop is connected with electro-hydraulic reversing valve, and oil pump is connected with electro-hydraulic reversing valve and accumulator.
Further, described frame is provided with two crown sheavies.
Further, one of them crown sheave is arranged on frame top, and another crown sheave is arranged on frame side.
Further, described hydraulic single prop is fixed in frame, and hydraulic single prop connects guide wheel by the piston rod arranged in it.
Further, described oil pump is variable capacity oil pump.
Further, overflow valve is provided with between described oil pump and electro-hydraulic reversing valve.
Further, described sucker rod external surface is coated with the anticorrosion antiwear alloy steel products bed of material.
Further, the column length of described sucker rod is 9200 ~ 9800mm.
Principle of the present utility model is: during motor rotating drive variable capacity oil pump, mechanical energy is converted to the pressure energy of the fluid exported from oil pump, control to drive oil cylinder straight reciprocating motion by electro-hydraulic reversing valve, when the piston is moving up, sucker rod connect chain by crown sheave, piston rod upper end connect guide wheel and frame fix, achieve moving downward of sucker rod.When piston rod moves downward, the guide wheel of piston rod and end is driven to move downward, because chain one end is fixed on the upper end of frame, the motion of guide wheel, make connecting with pumping rod chain travel prolongation mechanism achieve long stroke, utilize piston area product moment to realize sucker rod down stroke speed and be less than upstroke speed.
Compared with prior art, after adopting said structure, chain pumping unit of the present utility model effectively can solve the low problem of heavy oil wells production efficiency, decrease the mechanical wear of cycle-index and pump valve, seal, reduce the fatigue effect of part, the life-span is long, and two gravitational equilibrium mechanism makes machine stress reasonable, operate steadily, the utility model have structure simple, arrange rationally, the advantage such as cost of manufacture is low.
[accompanying drawing explanation]
Fig. 1 is the utility model structural representation.
In accompanying drawing: 1, directive wheel; 2, outer ballast box; 3, electro-hydraulic reversing valve; 4, accumulator; 5, variable capacity oil pump; 6, sucker rod; 7, hydraulic single prop; 8, ballast box; 9, guide wheel; 10, crown sheave; 11, the first chain; 12, the second chain; 13, overflow valve.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the utility model is further described.
Referring to as shown in Figure 1, chain pumping unit comprises directive wheel 1, outer ballast box 2, electro-hydraulic reversing valve 3, accumulator 4, oil pump 5, sucker rod 6, hydraulic single prop 7, ballast box 8, guide wheel 9, crown sheave 10, first chain 11 and the second chain 12, frame is provided with two crown sheavies 10, one of them crown sheave 10 is arranged on frame top, another crown sheave 10 is arranged on frame side, the side being arranged on the crown sheave 10 of frame top is provided with directive wheel 1, the below of crown sheave 10 is provided with guide wheel 9, first chain 11 and second chain 12 one end connecting with pumping rod 6, second chain 12 other end is once connected to frame upper end through guide wheel 9 and crown sheave 10, first chain 11 other end is connected with outer ballast box 2 with directive wheel 1 through crown sheave 10, guide wheel 9 is arranged with hydraulic single prop 7, hydraulic single prop 7 is fixed in frame, hydraulic single prop 7 connects guide wheel 9 by the piston rod arranged in it, hydraulic single prop 7 is connected with electro-hydraulic reversing valve 3, oil pump 5 is connected with electro-hydraulic reversing valve 3 and accumulator 4.
As preferred embodiment, oil pump 5 is oil pump, is provided with overflow valve 13 between described oil pump 5 and electro-hydraulic reversing valve 3, and sucker rod 6 column length is 9200 ~ 9800mm, and external surface is coated with the anticorrosion antiwear alloy steel products bed of material.
After adopting said structure, the beneficial effect that this detailed description of the invention produces is chain pumping unit described in this detailed description of the invention, efficiently solve the problem that heavy oil wells production efficiency is low, decrease the mechanical wear of cycle-index and pump valve, seal, reduce the fatigue effect of part, the life-span is long, and two gravitational equilibrium mechanism makes machine stress reasonable, operate steadily, this detailed description of the invention have structure simple, arrange rationally, the advantage such as cost of manufacture is low.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (8)

1. chain pumping unit, is characterized in that: comprise directive wheel (1), outer ballast box (2), electro-hydraulic reversing valve (3), accumulator (4), oil pump (5), sucker rod (6), hydraulic single prop (7), ballast box (8), guide wheel (9), crown sheave (10), the first chain (11) and the second chain (12), described crown sheave (10) is arranged on frame top, the side of crown sheave (10) is provided with directive wheel (1), the below of crown sheave (10) is provided with guide wheel (9), first chain (11) and the second chain (12) one end connecting with pumping rod (6), second chain (12) other end is once connected to frame upper end through guide wheel (9) and crown sheave (10), first chain (11) other end is connected with outer ballast box (2) with directive wheel (1) through crown sheave (10), guide wheel (9) is arranged with hydraulic single prop (7), hydraulic single prop (7) is connected with electro-hydraulic reversing valve (3), oil pump (5) is connected with electro-hydraulic reversing valve (3) and accumulator (4).
2. chain pumping unit according to claim 1, is characterized in that: described frame is provided with two crown sheavies (10).
3. chain pumping unit according to claim 2, is characterized in that: one of them crown sheave (10) is arranged on frame top, and another crown sheave (10) is arranged on frame side.
4. chain pumping unit according to claim 1, is characterized in that: described hydraulic single prop (7) is fixed in frame, and hydraulic single prop (7) connects guide wheel (9) by the piston rod arranged in it.
5. chain pumping unit according to claim 1, is characterized in that: described oil pump (5) is variable capacity oil pump.
6. chain pumping unit according to claim 1, is characterized in that: be provided with overflow valve (13) between described oil pump (5) and electro-hydraulic reversing valve (3).
7. chain pumping unit according to claim 1, is characterized in that: described sucker rod (6) external surface is coated with the anticorrosion antiwear alloy steel products bed of material.
8. chain pumping unit according to claim 1, is characterized in that: the column length of described sucker rod (6) is 9200 ~ 9800mm.
CN201520737935.8U 2015-09-22 2015-09-22 Chain type pumping unit Expired - Fee Related CN204960896U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520737935.8U CN204960896U (en) 2015-09-22 2015-09-22 Chain type pumping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520737935.8U CN204960896U (en) 2015-09-22 2015-09-22 Chain type pumping unit

Publications (1)

Publication Number Publication Date
CN204960896U true CN204960896U (en) 2016-01-13

Family

ID=55055969

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520737935.8U Expired - Fee Related CN204960896U (en) 2015-09-22 2015-09-22 Chain type pumping unit

Country Status (1)

Country Link
CN (1) CN204960896U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160113

Termination date: 20160922

CF01 Termination of patent right due to non-payment of annual fee