CN106321024A - Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method - Google Patents
Hydraulic Oil Pumping Unit Using Immobility Machine to Replace Piston Sealing Element in Oil Cylinder And iReplacing Method Download PDFInfo
- Publication number
- CN106321024A CN106321024A CN201610774791.2A CN201610774791A CN106321024A CN 106321024 A CN106321024 A CN 106321024A CN 201610774791 A CN201610774791 A CN 201610774791A CN 106321024 A CN106321024 A CN 106321024A
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- China
- Prior art keywords
- cylinder
- hydraulic
- pumping unit
- oil
- piston
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
Abstract
The invention provides a hydraulic oil pumping unit using immobility machine to replace piston sealing element in oil cylinder and replacing method. The hydraulic oil pumping unit includes hydraulic station, master cylinder, body frame, connecting piece and support cylinder. The master cylinder piston rod of the hydraulic oil pumping unit is fixed upwards with oil cylinder body arranged on the body frame and the piston rod connected with polish rod of the mouth of oil well. Support cylinder arranged on the body frame is able to jack up the piston rod of the master cylinder, which allows the sealing element of piston rod to be removed out of the hydraulic cylinder. The bottom of master cylinder can be disassembled and can hang in the air. Hydraulic pipeline connected to the master cylinder is provided with switch valve and can choose to provide the master cylinder or the support cylinder with power liquid. Furthermore, the invention also provides the method for the replacement of piston sealing element of oil cylinder with immobility machine. The invention overcomes the problem of heavy workload caused by moving the oil cylinder in replacement of piston sealing element in hydraulic oil pumping unit in current technology. According to the invention of hydraulic oil pumping unit, the replacement of sealing element is finished by using the support cylinder to remove the sealing piston out of oil cylinder, which has simple operation and saves time and efforts.
Description
Technical field
The present invention relates to a kind of hydraulic pumping unit, relate more particularly to a kind of cylinder thrust type hydraulic pumping unit.
Background technology
Hydraulic pumping unit, as a kind of oil field professional equipment, has been used for formation fluid and has been given rise to the operation on ground by shaft bottom,
Be suitable to the working system of long stroke, low jig frequency.During the use of hydraulic pumping unit, oil cylinder piston sealing member belongs to loss
Part, through after a while after the operation of (generally 6 months～12 months), it is necessary to shuts down the oil cylinder piston more renewed and seals
Part, to ensure the normal operation of oil pumper and higher system effectiveness.Prior art, typically by hydraulic cylinder entirety from oil pumper
Pull down, transport maintenance shop back, use professional equipment to be removed by hydraulic cylinder piston rod, the piston seal checking and more renewing, so
After transport back and be installed on oil pumper.Owing to oil pumper is typically mounted at field, farther out, whole operation process consumes in distance maintenance shop
Take human and material resources, affect normal oil producing operation progress.
Summary of the invention
The invention provides a kind of not motivation and change hydraulic pumping unit and the oil cylinder piston sealing of oil cylinder piston sealing member
Part replacing options, which overcomes existing hydraulic pumping unit and changes the inconvenient problem of sealing piston of hydraulic cylinder part, take out not dismantling
Hydraulic cylinder in oil machine, do not use engineering machinery under conditions of complete the replacing of sealing piston of hydraulic cylinder part.
The technical scheme is that: described hydraulic pumping unit include main hydraulic cylinder, frame, connector, supporting cylinder with
And Hydraulic Station, described main hydraulic cylinder, the cylinder body of supporting cylinder are arranged in frame and the two piston rod external part direction side by side
Upward, the unsettled layout in lower end of described main hydraulic cylinder, moving back and forth up and down of the piston rod of described main hydraulic cylinder can be by passing
The drive wellhead polish rod that is dynamically connected is up or descending；The cylinder body bottom end cover of described main hydraulic cylinder can be dismantled, and described main hydraulic pressure
The piston rod length of cylinder is more than the cylinder body length of hydraulic cylinder；Described connector is arranged on the piston rod of main hydraulic cylinder, described
Can be connected fixing when moving on the piston rod of support hydraulic cylinder with described connector, and can be by moving back and forth up and down the main liquid of drive
The piston rod of cylinder pressure and moving back and forth up and down of piston；When the piston rod of supporting cylinder moves to bottom, it is possible to by institute
State the cylinder barrel after the piston removal bottom end cover dismounting of main hydraulic cylinder；Described main hydraulic cylinder, supporting cylinder are returned by hydraulic pressure respectively
Road is connected with described Hydraulic Station.
Further, the cylinder body bottom end cover of described main hydraulic cylinder is Flange joint with the type of attachment of cylinder body, threadeds
Or clamp connection.
Further, the outlet of described Hydraulic Station connects two hydraulic circuits, hydraulic circuit by switch valve, three four
Logical reversal valve connects supporting cylinder；Another hydraulic circuit connects main hydraulic cylinder by switch valve, bi-bit bi-pass reversal valve.
Further, the cylinder body lower end of described main hydraulic cylinder is equipped with air discharge ports.
Further, described connector is ear mount, threaded connector or flange.
Further, the cylinder body lower end of described main hydraulic cylinder is provided with internal diameter expanding reach structure.
Further, described internal diameter expanding reach structure is expanding or groove.
Further, described hydraulic pumping unit is double-cylinder hydraulic oil pumper, and it includes juxtaposed two main hydraulic cylinders.
Further, the piston rod upper end of described main hydraulic cylinder connects reel, and described reel is wound with flexible connecting member,
One end of described flexible connecting member is fixed with frame, the other end can be used in being connected with wellhead polish rod.
The not motivation of hydraulic pumping unit changes the method for oil cylinder piston sealing member, comprises the steps:
Step 1: shut down, removes the connection between oil pumper and polished rod；
Step 2: disconnect the hydraulic circuit of Hydraulic Station and main hydraulic cylinder, removes the end cap of main hydraulic cylinder；
Step 3: move on the piston rod of supporting cylinder and make it be connected with connector；
Step 4: move down drive main hydraulic cylinder piston rod removal cylinder barrel by the piston rod of supporting cylinder, change sealing member, move
Return hydraulic cylinder, the bottom end cover of main hydraulic cylinder is installed；
Step 5: disconnecting the piston rod of supporting cylinder and the connection of connector, the piston rod of supporting cylinder moves down；Connect liquid
Pressure station and the hydraulic circuit of main hydraulic cylinder, in oil cylinder, input hydraulic pressure oil, emits oil cylinder by the air discharge ports on cylinder body
Interior air；Connect the connection between oil pumper and polished rod, properly functioning operation
The hydraulic pumping unit provided according to the present invention and the method changing sealing member, can not remove oil cylinder, motionless engineering
The operation of piston seal it is replaced in the case of machinery.The hydraulic pumping unit of prior art change cylinder seal part need by
Oil cylinder is pulled down, and is transported to workshop and is replaced, and then transports the operations such as oil well installation back, and process employs the equipment such as crane, and needs are many
People has cooperated.Comparing, the method that the hydraulic pumping unit of present invention offer and replacing seal is time saving and energy saving, operating cost is low.
Accompanying drawing explanation
Fig. 1 is the hydraulic pumping unit systematic schematic diagram that motivation does not changes oil cylinder piston sealing member；
Fig. 2 is hydraulic pumping unit system mode schematic diagram when normally working；
System mode schematic diagram when Fig. 3 is for changing oil cylinder piston sealing member；
Fig. 4 is the structural representation of main hydraulic cylinder；
Fig. 5 is the double-cylinder hydraulic Pumping Unit schematic diagram that motivation does not changes oil cylinder piston sealing member；
Fig. 6 is the method step schematic diagram that double-cylinder hydraulic oil pumper not motivation changes oil cylinder piston sealing member；
Fig. 7 is the single-cylinder hydraulic Pumping Unit schematic diagram that motivation does not changes oil cylinder piston sealing member；
In figure, 01-the first switch valve, 02-three position four-way directional control valve, 03-supporting cylinder, 04-second switch valve, 05-bis-
Two way selected valve, 06-frame, 07-main hydraulic cylinder, 071-piston rod, 072-cylinder barrel, 073-piston seal, 074-expanding reach,
075-end cap, 076-air bleeder valve, 08-connector, 09-reel, 10-flexible connecting member, 11-wellhead polish rod.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the hydraulic pumping unit present invention not motivation being changed oil cylinder piston sealing member carries out detailed Jie
Continue.It should be understood that embodiment shown in the drawings is not limitation of the scope of the invention, and illustrate that the technology of the present invention
The connotation of scheme.
According to the hydraulic pumping unit of the present invention, its technical scheme is: the hydraulic pressure of motivation replacing oil cylinder piston sealing member is not taken out
Oil machine, hydraulic pumping unit includes Hydraulic Station, main hydraulic cylinder, frame, connector and supporting cylinder.The main hydraulic pressure of hydraulic pumping unit
Cylinder is arranged in frame, and piston cylinder direction is connected with wellhead polish rod towards upper piston rod by connector.Supporting cylinder is arranged on
In frame, it is possible to by the piston rod jack-up of main hydraulic cylinder so that the cylinder barrel of the sealing member removal hydraulic cylinder of piston rod.
According to the hydraulic pumping unit of the present invention, Hydraulic Station, as the executive component of hydraulic pumping unit, is provided by main hydraulic cylinder
The linear reciprocating motion that hydraulic energy transfer is piston rod, drive polished rod and down-hole pump to complete oil producing operation.The main liquid of the present invention
The piston rod external part direction of cylinder pressure upward, is fixed in frame, and hydraulic cylinder can use single or multiple be arranged in parallel.
The structure of hydraulic cylinder should meet following condition:
Use between end cap and the cylinder barrel of main hydraulic cylinder and removably connect.
Flange joint, threaded or box cupling is used to be connected between the cylinder barrel of main hydraulic cylinder and end cap.
The cylinder barrel bottom diameter of main hydraulic cylinder includes raised-diameter segment, and raised-diameter segment can use expanding or groove
Form.Raised-diameter segment is easy to enter in cylinder barrel with the piston of sealing member.
The piston rod length of main hydraulic cylinder is more than the length of cylinder body, when the end cap of removal cylinder barrel, when promoting piston rod backward,
Piston seal can all skid off cylinder barrel.
According to the hydraulic pumping unit of the present invention, cylinder piston rod direction is upward, in order to do not dismantling piston rod external part
In the case of sealing member, piston rod seal component can move out oil cylinder, and the position of piston rod seal component facilitates operator on ground
Check and change.
Type of attachment can be to be arranged on the pulley of main hydraulic cylinder piston rod upper end and one end is fixed, and walks around pulley, nothing
The other end of the flexible connecting member of constraint is connected with polished rod；Described flexible connecting member is steel cable, belt or chain.
Type of attachment can also be to use crossbeam or plate between two or multiple cylinder piston rod being arranged in parallel even
Connecing, crossbeam or plate are connected with polished rod.
According to the hydraulic pumping unit of the present invention, when the piston seal of main hydraulic cylinder needs to change, by main hydraulic cylinder piston
Bar and support hydraulic pressure cylinder piston rod couple together, and supporting cylinder drives the movement of the piston rod of main hydraulic cylinder so that piston is close
Sealing is fully removed in cylinder barrel.
To this end, supporting cylinder is arranged in parallel with main hydraulic cylinder, when support hydraulic pressure cylinder piston rod is retracted, the work of main hydraulic cylinder
Stopper rod skids off cylinder barrel under gravity, it is simple to the replacing of sealing member；When support hydraulic pressure cylinder piston rod stretches out, the work of main hydraulic cylinder
Stopper rod is pushed into the expanding reach of cylinder barrel.
The hydraulic pumping unit provided according to the present invention, motivation is not changed the method for oil cylinder piston sealing member and is included step:
Step 1: shut down, removes the connection between oil pumper and polished rod；
Step 2: disconnect the switch valve between Hydraulic Station and the fluid pressure line of main hydraulic cylinder, removes the end cap of main hydraulic cylinder；
Step 3: drive main hydraulic cylinder piston rod removal cylinder barrel by supporting cylinder, change sealing member, retract hydraulic cylinder, install
The bottom end cover of main hydraulic cylinder；
Step 4: disconnecting Hydraulic Station and the hydraulic circuit of hydraulic jack, support hydraulic pressure cylinder piston rod is returned to position；Connect
Hydraulic Station and main hydraulic cylinder hydraulic circuit, input hydraulic pressure oil in oil cylinder, discharged by the air bleeder valve on hydraulic cylinder
Fall in-oil cylinder air；Connect the connection between oil pumper and polished rod, properly functioning operation.
As it is shown in figure 1, the hydraulic pumping unit system principle of the not motivation replacing oil cylinder piston sealing member provided for the present invention
Figure.Main hydraulic cylinder 07 is arranged on support 06, and direction is upward, unsettled at the cylinder cap of lower end, piston cylinder upper end installation connecting element 08；?
Support hydraulic cylinder 03 is arranged in frame 06, is arranged in parallel with main hydraulic cylinder 07.The outlet of Hydraulic Station connects two loops, a loop
By the first switch valve 01, three position four-way directional control valve 02, connect supporting cylinder 03；Second switch valve is passed through in another loop
04, two position two-way valve is sent out, and connects main hydraulic cylinder 07.
As in figure 2 it is shown, system mode schematic diagram when normally working for hydraulic pumping unit.When the first switch valve 01 close,
Two switch valves 04 are opened, and power fluid passes through second switch valve 04, two position two-way valve 05, drives main hydraulic cylinder 07 action.When two
The right position of two-port valve 05, power fluid flows into main hydraulic cylinder 07 rodless cavity, and oil pumper carries out upstroke work；When two position two-way valve 05 is left
Position, under the roofbolt action of gravity of down-hole, power fluid flows out main hydraulic cylinder 07 rodless cavity, oil pumper carries out down stroke work.Back and forth
Circulation, oil pumper drives down-hole pump lifting formation fluid.
As it is shown on figure 3, system mode schematic diagram when changing oil cylinder piston sealing member for hydraulic pumping unit.Oil pumper and polished rod
Disconnect, the cylinder barrel bottom end cover of main hydraulic cylinder removed, supporting cylinder and main hydraulic cylinder piston rod connector be connected.
When the first switch valve 01 is opened, and second switch valve 04 cuts out, hydraulic oil pass through the first switch valve 01, three position four-way directional control valve 02,
Drive supporting cylinder 03 action.When the left position of three position four-way directional control valve 02, supporting cylinder 03 is up, drives main hydraulic cylinder piston
Bar is up；When the right position of three position four-way directional control valve 02, supporting cylinder 03 is descending, drives main hydraulic cylinder 07 piston rod to skid off cylinder barrel；
When position in three position four-way directional control valve 02, supporting cylinder 03 is fixed.By the up and down motion of supporting cylinder 03, drive main hydraulic pressure
Cylinder 07 piston seal removal cylinder barrel, after changing sealing member, then moves into cylinder barrel.
As shown in Figure 4, the structural representation of the main hydraulic cylinder provided for the present invention.Live to reach not motivation replacing oil cylinder
Plug sealing member purpose, the structure of main hydraulic cylinder needs to meet claimed below: the length of piston rod 071 more than the length of cylinder barrel 072,
When piston rod moves down, sealing member 073 can be fully removed cylinder barrel 074；The lower end of cylinder barrel 074 connects end cap 075, and end cap can
Remove；There is expanding reach 074 in the bottom diameter of cylinder barrel, the diameter of expanding reach is more than internal diameter of cylinder, it is simple to piston seal moves into
In cylinder barrel, not by scratch when protection piston seal moves into；Air bleeder valve 076 is installed on cylinder barrel, is used for changing piston
After sealing member, in-oil cylinder air is discharged.
The first detailed description of the invention
As it is shown in figure 5, be the double-cylinder hydraulic Pumping Unit schematic diagram that motivation does not changes oil cylinder piston sealing member.Two main hydraulic pressure
Cylinder 07 is arranged in frame 06, main hydraulic cylinder 07 piston rod upper end install reel 09, direction upwards, one end of flexible connecting member 10
Fixing, walk around reel 09, the other end is connected with wellhead polish rod 11；Supporting cylinder 03, is arranged on machine 06, and connector 08 is installed
On the support of reel 09.
As shown in Figure 6, double-cylinder hydraulic oil pumper not motivation changes the method step schematic diagram of oil cylinder piston sealing member.
S1 in figure, when main hydraulic cylinder runs near bottom dead center, shuts down, removes the connection between oil pumper and polished rod；Disconnected
Drive the switch valve between Hydraulic Station and the fluid pressure line of main hydraulic cylinder；
S2 in figure, opens the switch valve between Hydraulic Station and supporting cylinder fluid pressure line, drives supporting cylinder up, until
Support hydraulic pressure cylinder piston rod contacts with the connector being arranged on roller stand, by connector with support hydraulic pressure cylinder piston rod even
Connect, remove the end cap of main hydraulic cylinder；
S3 in figure, drives supporting cylinder descending, drives main hydraulic cylinder piston rod removal cylinder barrel, changes sealing member；
S4 in figure, retracts hydraulic cylinder；Driving supporting cylinder is up, installs the bottom end cover of main hydraulic cylinder；Disconnect supporting cylinder
Connection between piston rod and connector, support hydraulic pressure cylinder piston rod is returned to position, closes Hydraulic Station and support hydraulic pressure
The hydraulic circuit of cylinder；
S5 in figure, connect Hydraulic Station and main hydraulic cylinder hydraulic circuit, input hydraulic pressure oil in oil cylinder, by hydraulic cylinder
Air bleeder valve emits in-oil cylinder air, connects the connection between oil pumper and polished rod, properly functioning operation.
The second detailed description of the invention
As it is shown in fig. 7, the single-cylinder hydraulic Pumping Unit signal of the not motivation replacing oil cylinder piston sealing member provided for the present invention
Figure.In figure, main hydraulic cylinder 07 is fixedly mounted in frame 06, and upward, main hydraulic cylinder lower end is unsettled in piston rod direction；Main hydraulic cylinder
Reel 09, installation connecting element 08 on reel stand are installed in the piston rod upper end of 07；Flexible connecting member one end is fixed, and walks around reel, separately
One end is connected with wellhead polish rod.
The method step changing piston seal and the first detailed description of the invention of single-cylinder hydraulic oil pumper shown in Fig. 7
Method step identical, repeat no more.
The present invention is not limited to above-mentioned embodiment, in the ken that those skilled in the art are possessed, also may be used
To make a variety of changes on the premise of without departing from present inventive concept, the content after change still falls within protection scope of the present invention.
Claims (10)
- The most motivation does not changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described hydraulic pumping unit includes main liquid Cylinder pressure (07), frame (06), connector (08), supporting cylinder (03) and Hydraulic Station, described main hydraulic cylinder (07), support liquid The cylinder body of cylinder pressure (03) be arranged on that frame (06) is upper side by side and the two piston rod external part direction upward, described main hydraulic cylinder (07) The unsettled layout in lower end, moving back and forth up and down of the piston rod of described main hydraulic cylinder (07) can be by the drive well head that is in transmission connection Polished rod is up or descending；The cylinder body bottom end cover of described main hydraulic cylinder (07) can be dismantled, and the work of described main hydraulic cylinder (07) Stopper rod length is more than the cylinder body length of hydraulic cylinder；Described connector (08) is arranged on the piston rod of main hydraulic cylinder (07), described Can be connected fixing when moving on the piston rod of supporting cylinder (03) with described connector (08), and can be by up and down reciprocatingly moving The piston rod of dynamic drive main hydraulic cylinder (07) and moving back and forth up and down of piston；When the piston rod of supporting cylinder (03) moves To time the next, it is possible to the piston of described main hydraulic cylinder (07) to be removed the cylinder barrel after bottom end cover dismounting；Described main hydraulic cylinder (07), Supporting cylinder (03) is connected with described Hydraulic Station by hydraulic circuit respectively.
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described The cylinder body bottom end cover of main hydraulic cylinder (07) is Flange joint with the type of attachment of cylinder body, threadeds or clamp connection.
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described The outlet of Hydraulic Station connects two hydraulic circuits, and a hydraulic circuit is connected by switch valve (01), three position four-way directional control valve (02) Supporting cylinder (03)；Another hydraulic circuit connects main hydraulic cylinder by switch valve (04), bi-bit bi-pass reversal valve (05) (07).
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described The cylinder body lower end of main hydraulic cylinder (07) is equipped with air discharge ports.
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, described connector (08) For ear mount, threaded connector or flange.
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described The cylinder body lower end of main hydraulic cylinder (07) is provided with internal diameter expanding reach structure.
- Not motivation the most according to claim 6 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described Internal diameter expanding reach structure is expanding or groove.
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described Hydraulic pumping unit is double-cylinder hydraulic oil pumper, and it includes juxtaposed two main hydraulic cylinders (07).
- Not motivation the most according to claim 1 changes the hydraulic pumping unit of oil cylinder piston sealing member, it is characterised in that: described The piston rod upper end of main hydraulic cylinder (07) connects reel, and described reel is wound with flexible connecting member, described flexible connecting member One end is fixed with frame, the other end can be used in being connected with wellhead polish rod.
- 10. the method that the not motivation of the arbitrary described hydraulic pumping unit of claim 1-9 changes oil cylinder piston sealing member, its feature It is, comprises the steps:Step 1: shut down, removes the connection between oil pumper and polished rod；Step 2: disconnect the hydraulic circuit of Hydraulic Station and main hydraulic cylinder, removes the end cap of main hydraulic cylinder；Step 3: move on the piston rod of supporting cylinder and make it be connected with connector；Step 4: move down drive main hydraulic cylinder piston rod removal cylinder barrel by the piston rod of supporting cylinder, change sealing member, move Return hydraulic cylinder, the bottom end cover of main hydraulic cylinder is installed；Step 5: disconnecting the piston rod of supporting cylinder and the connection of connector, the piston rod of supporting cylinder moves down；Connect liquid Pressure station and the hydraulic circuit of main hydraulic cylinder, in oil cylinder, input hydraulic pressure oil, emits oil cylinder by the air discharge ports on cylinder body Interior air；Connect the connection between oil pumper and polished rod, properly functioning operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774791.2A CN106321024B (en) | 2016-08-31 | 2016-08-31 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774791.2A CN106321024B (en) | 2016-08-31 | 2016-08-31 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321024A true CN106321024A (en) | 2017-01-11 |
| CN106321024B CN106321024B (en) | 2018-09-28 |
Family
ID=57788396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610774791.2A Active CN106321024B (en) | 2016-08-31 | 2016-08-31 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321024B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229473Y (en) * | 1995-08-03 | 1996-06-19 | 王兆修 | Piston of mud pump with changable sealing ring |
| CN102094600A (en) * | 2011-01-24 | 2011-06-15 | 浙江海洋学院 | Hydraulic pumping device with energy recovery function |
| US20110185717A1 (en) * | 2007-11-23 | 2011-08-04 | Sypro Kotsonis | Hydraulic manifold pump |
| CN102192199A (en) * | 2010-09-07 | 2011-09-21 | 杨崇恩 | Power driven system and oil pumping unit applying same |
| CN102704897A (en) * | 2012-06-25 | 2012-10-03 | 施伟 | Gravitational equilibrium hydraulic pressure long stroke pumping unit |
| CN202900127U (en) * | 2012-09-29 | 2013-04-24 | 胜利油田高原连续油管工程有限公司 | Detachable and replaceable type sealing device |
| CN202946115U (en) * | 2012-10-25 | 2013-05-22 | 顾心怿 | Main auxiliary oil cylinder type hydraulic pumping machine |
-
2016
- 2016-08-31 CN CN201610774791.2A patent/CN106321024B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229473Y (en) * | 1995-08-03 | 1996-06-19 | 王兆修 | Piston of mud pump with changable sealing ring |
| US20110185717A1 (en) * | 2007-11-23 | 2011-08-04 | Sypro Kotsonis | Hydraulic manifold pump |
| CN102192199A (en) * | 2010-09-07 | 2011-09-21 | 杨崇恩 | Power driven system and oil pumping unit applying same |
| CN102094600A (en) * | 2011-01-24 | 2011-06-15 | 浙江海洋学院 | Hydraulic pumping device with energy recovery function |
| CN102704897A (en) * | 2012-06-25 | 2012-10-03 | 施伟 | Gravitational equilibrium hydraulic pressure long stroke pumping unit |
| CN202900127U (en) * | 2012-09-29 | 2013-04-24 | 胜利油田高原连续油管工程有限公司 | Detachable and replaceable type sealing device |
| CN202946115U (en) * | 2012-10-25 | 2013-05-22 | 顾心怿 | Main auxiliary oil cylinder type hydraulic pumping machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321024B (en) | 2018-09-28 |
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