CN114294219A - Ground hydraulic driving device of intermittent oil extraction screw pump - Google Patents
Ground hydraulic driving device of intermittent oil extraction screw pump Download PDFInfo
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- CN114294219A CN114294219A CN202210022801.2A CN202210022801A CN114294219A CN 114294219 A CN114294219 A CN 114294219A CN 202210022801 A CN202210022801 A CN 202210022801A CN 114294219 A CN114294219 A CN 114294219A
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Abstract
The invention relates to a ground hydraulic driving device of an intermittent oil extraction screw pump, which comprises a driving head, a transmission part and a wellhead assembly; the driving head comprises a hydraulic motor, an output shaft of the hydraulic motor is connected with a transmission part through a flat key, the transmission part is fixed on a wellhead assembly through a bolt, and the wellhead assembly is directly fixed on an oil well casing in a threaded connection mode; the transmission part comprises an overrunning clutch, a bearing supporting seat, a multi-stage spline shaft and a hydraulic cylinder body, the transmission part transmits power to the spline shaft through the overrunning clutch through key coupling, the multi-stage spline shaft is connected step by step from top to bottom, and the power is transmitted to the sucker rod through the spline coupling, so that a screw pump rotor is driven to rotate; when the machine is stopped, the hydraulic motor gradually decelerates to make the rod column slowly stop rotating; slowly reversing through a hydraulic motor to gradually release the reversing potential energy of the sucker rod string; the multistage spline shaft can realize lifting and lowering of the sucker rod string under the action of hydraulic pressure, and adhesion between the surfaces of the stator and the rotor is prevented.
Description
The technical field is as follows:
the invention relates to a screw pump ground driving device in the field of petroleum mechanical engineering, in particular to an intermittent oil extraction screw pump ground hydraulic driving device.
Background art:
in the current oil field and mine, the oil extraction screw pump is an economical and environment-friendly oil extraction machine. The oil field production increasing device plays a great role in increasing the yield of oil fields, and has more advantages in the oil exploitation of low-yield oil wells, such as smaller volume, small occupied area and lower energy consumption. However, such an oil extraction device with excellent performance still has many disadvantages, such as that when the oil extraction device is stopped, the rotor and the stator are easy to be bonded together due to the material problem (the rotor is metal, and the stator is rubber), and the oil extraction device cannot be applied to the intermittent oil extraction process of the low-yield oil field. In addition, when the oil extraction screw pump driving device is stopped, the sucker rod string can rotate reversely, and equipment damage and personal safety accidents can be caused in serious cases. The traditional screw pump ground driving device is driven by a motor to drive a belt pulley, torque is transmitted to a screw through a gear, and a mechanical ratchet wheel or a wedge block is adopted as an anti-reverse mechanism. The belt transmission has a plurality of defects in the application process, the belt transmission is easy to slip, the service life is short, and the safety of the anti-reverse mechanism is poor.
The invention content is as follows:
the invention aims to provide a ground hydraulic driving device of an intermittent oil extraction screw pump, which is used for solving the problems of adhesion on the surfaces of a stator and a rotor of the screw pump and the reverse rotation of a rod column of the driving device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the ground hydraulic driving device of the intermittent oil extraction screw pump comprises a driving head, a transmission part and a wellhead assembly; the driving head comprises a hydraulic motor, a flat key, a hydraulic motor base, a cover plate, an upper connecting cylinder, an outer shell and a lower connecting cylinder, wherein the hydraulic motor is fixed with the hydraulic motor base through a bolt; the output shaft of the hydraulic motor is connected with the transmission part through a flat key, the transmission part is fixed on a wellhead assembly through a bolt, and the wellhead assembly is directly fixed on an oil well casing in a threaded connection mode;
the transmission part comprises an overrunning clutch, a bearing support seat, a first-stage spline shaft, a second-stage spline shaft, a first piston, a third-stage spline shaft, a fourth-stage spline shaft, a hydraulic cylinder body, a hydraulic cylinder cover and a tapered roller bearing, wherein the outer ring of the overrunning clutch is connected with a spline sleeve through a second flat key, the spline sleeve is connected with the first-stage spline shaft, a bearing is arranged between the upper end of the bearing support seat and the first-stage spline shaft, the first-stage spline shaft extends into a sleeve, and the bearing support seat is fastened outside the upper port of the transmission sleeve;
the upper end of the hydraulic cylinder body forms a thin-wall end by arranging an annular boss, the thin-wall end of the hydraulic cylinder body is fastened outside the thin-wall end of the lower end of the first-stage spline shaft, the first piston is fixed at the lower end of the thin-wall end of the first-stage spline shaft through a first threaded sleeve, and the first piston is positioned in an annular space between the thin-wall end of the hydraulic cylinder body and the thin-wall end of the first-stage spline shaft; the upper end of the second-stage spline shaft extends into the first spline shaft, and the second piston is fixed at the lower end of the second-stage spline shaft through a second threaded sleeve; the upper end of the third-stage spline shaft extends into the second spline shaft, and the third piston is fixed at the lower end of the third-stage spline shaft through a third threaded sleeve; in the fourth stage integral key shaft upper end stretched into the third integral key shaft, the fourth piston was fixed outside the fourth stage integral key shaft by fourth threaded sleeve, and fourth stage integral key shaft bottom is equipped with the uide bushing, and hydraulic cylinder cap is fixed in hydraulic cylinder body bottom, and hydraulic cylinder cap still with transmission sleeve bottom fixed connection, fourth stage integral key shaft lower extreme passed the uide bushing and hydraulic cylinder cap stretches out transmission sleeve.
In the scheme, the spline sleeve is connected with the upper part of the first-stage spline shaft through a spline, the first-stage spline shaft is formed by connecting the upper part of the first-stage spline shaft with the lower part of the first-stage spline shaft through threads, the second-stage spline shaft is formed by connecting the upper part of the second-stage spline shaft with the lower part of the second-stage spline shaft through threads, and the third-stage spline shaft is formed by connecting the upper part of the third-stage spline shaft with the lower part of the third-stage spline shaft through threads; a sealing ring is arranged between the first piston and the lower part of the first spline shaft, the sealing rings are respectively arranged between the first threaded sleeve and the lower part of the first-stage spline shaft and the upper part of the second-stage spline shaft, and the lower part of the first-stage spline shaft is connected with the upper part of the second-stage spline shaft through a spline; a sealing ring is arranged between the second piston and the lower part of the second-stage spline shaft, the sealing rings are respectively arranged between the second threaded sleeve and the lower part of the second-stage spline shaft and the upper part of the third-stage spline shaft, and the lower part of the second-stage spline shaft is connected with the upper part of the third-stage spline shaft through a spline; a sealing ring is arranged between the third piston and the lower part of the third-stage spline shaft, the sealing ring is arranged between the third threaded sleeve and the lower part of the third-stage spline shaft and between the third threaded sleeve and the fourth-stage spline shaft respectively, and the lower part of the third-stage spline shaft is connected with the fourth-stage spline shaft through a spline; fourth piston and fourth level integral key shaft between be equipped with the sealing washer, uide bushing and fourth level integral key shaft between be equipped with the felt circle, hydraulic cylinder cap and hydraulic cylinder body pass through the screw thread and link to each other, each integral key shaft all arrange inside the hydraulic cylinder body in, hydraulic cylinder body and each piston between all be equipped with the sealing washer, the transmission sleeve meet through second screw and hydraulic cylinder cap, the bearing supporting seat pass through threaded connection's mode and fix on the sleeve, the bearing supporting seat on assemble tapered roller bearing.
The wellhead assembly in the scheme comprises an oil outlet tee joint, a hexagon bolt, an oil pipe hanger and a sleeve four-way joint; the oil outlet tee joint is fixed on a sleeve four-way joint through a hexagon bolt, the sleeve four-way joint is fixed on a sleeve through threaded connection, the oil pipe hanger is arranged inside the sleeve four-way joint, and a sealing ring is arranged between the oil pipe hanger and the oil outlet tee joint as well as between the oil pipe hanger and the sleeve four-way joint.
The invention has the following beneficial effects:
1. when the multi-stage integral type pumping unit works, the transmission part is driven by the hydraulic motor, power is transmitted to the spline shaft through the overrunning clutch through key coupling, the multi-stage spline shafts are connected step by step from top to bottom, and the power is transmitted to the bottom pumping rod through the spline coupling, so that the rotor of the screw pump is driven to rotate, and oil at the bottom of a well is lifted to the ground; when the machine needs to be stopped, the hydraulic motor gradually decelerates to enable the rod column to slowly stop rotating; the control system can control the hydraulic motor to slowly rotate reversely, and the overrunning clutch rotates reversely, so that the reverse potential energy of the sucker rod string can be gradually released, and the safety of the device is enhanced.
2. The piston rod of the lifting hydraulic cylinder consists of the multi-stage spline shafts, the external spline of the next stage spline shaft is combined with the internal spline of the previous stage spline shaft, and the pumping rod column can be lifted up and down under the action of hydraulic pressure, so that the phenomenon that the surfaces of the stator and the rotor are adhered to each other due to the fact that the rotor and the stator keep relatively static for a long time when the screw pump is stopped can be prevented, and the problem that restarting is difficult or accidents occur. The device
3. The invention can be directly fixed on the well head after being connected into a whole, meets the requirement of screw pump intermittent oil extraction, and has the advantages of full hydraulic drive, simple structure, high working efficiency, small occupied space and low energy consumption.
Description of the drawings:
FIG. 1 is a front cross-sectional view of the overall construction of the present invention;
FIG. 2 is a front cross-sectional view of the drive head of the present invention;
FIG. 3 is a front sectional view of a transmission portion of the present invention;
FIG. 4 is a front cross-sectional view of a wellhead assembly of the present invention.
In the figure: 1-driving head 101-hydraulic motor 102-flat key 103-motor bolt 104-hydraulic motor base 105-upper connecting cylinder 106-cover plate 107-shell screw 108-shell 109-lower connecting cylinder 110-oil well casing 111-oil pipe;
2-transmission part 201-overrunning clutch 202-second flat key 203-spline housing 204-first spline shaft upper part 205-bearing support base 206-first spline shaft lower part 207-second spline shaft upper part 208-first piston 209-seal ring 210-first threaded sleeve 211-second spline shaft lower part 212-third spline shaft upper part 213-second piston 214-second threaded sleeve 215-third spline shaft lower part 216-third piston 217-third threaded sleeve 218-fourth spline shaft 219-fourth piston 220-fourth threaded sleeve 221-guide sleeve 222-felt ring 223-hydraulic cylinder 224-hydraulic cylinder cover 225-fastening screw 226-first oil port 227-transmission sleeve 228-fourth oil port 229 Tapered roller bearing 230-third oil port 231-second oil port;
3-wellhead assembly 301-oil outlet tee 302-hexagon bolt 303-tubing hanger 304-casing four-way.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings:
as shown in figure 1, the ground hydraulic driving device of the intermittent oil extraction screw pump comprises a driving head 1, a transmission part 2, a wellhead assembly 3 and accessories, and is the ground driving device of the intermittent oil extraction hydraulic lifting rod screw pump. The transmission part 2 transmits power to the spline shaft through the overrunning clutch 201 through key coupling, the multi-stage spline shaft is connected from top to bottom step by step, and the power is transmitted to the bottom sucker rod through the spline coupling, so that a screw pump rotor is driven to rotate; when the machine is stopped, the hydraulic motor 101 gradually decelerates to make the rod column slowly stop rotating; the control system can control the hydraulic motor 101 to slowly rotate reversely, and the overrunning clutch 201 rotates reversely, so that the reverse rotation potential energy of the sucker rod string can be gradually released. The piston rod of the lifting hydraulic cylinder consists of a multi-stage spline shaft, an external spline of the next stage spline shaft is combined with an internal spline of the previous stage spline shaft, and the lifting and lowering of the sucker rod string can be realized under the action of hydraulic pressure.
The driving head is shown in fig. 2 and is used for providing the power required by the device and for connecting the transmission part 3 and the wellhead assembly 4 into a whole. The output shaft of the hydraulic motor 101 is connected with the transmission part 2 through a flat key 102, the transmission part 2 is fixed on the wellhead assembly 3 through bolts, the hydraulic motor 101 is fixed on a hydraulic motor base 104 through a motor bolt 103, the hydraulic motor base 104 is connected with an upper connecting cylinder 105 through bolts, the upper connecting cylinder 105 is connected with a cover plate 106 through bolts, the cover plate 106 is fixed on a shell 108 through shell screws 107, the bottom of the shell 108 is fixed on a lower connecting cylinder 109 through screws, the lower connecting cylinder 109 is fixed on the wellhead assembly 3 through bolts, the wellhead assembly 3 is directly fixed on an oil well casing 110 through a threaded connection mode, and an oil pipe 111 is also connected with the wellhead assembly 3.
The transmission part is shown in fig. 3 and is used for transmitting the torque of the hydraulic motor 101 to the sucker rod string, and the sucker rod string drives the rotor to rotate so as to lift the underground oil to the ground; when the machine is stopped, the sucker rod string is prevented from reversing, and the elastic potential energy stored in the sucker rod string is released in a controlled manner; the rotor in the well is lifted for a certain distance during intermittent oil extraction, which is to prevent the adhesion between the surface of the stator and the surface of the rotor due to the fact that the rotor and the stator of the screw pump keep relatively static for a long time, thereby causing difficulty in restarting or accidents. The outer ring of the overrunning clutch 201 is connected with a spline housing 203 through a second flat key 202, the spline housing 203 is connected with a first spline shaft upper part 204 through a spline, the first spline shaft upper part 204 is connected with a first spline shaft lower part 206 through a thread, a first piston 208 is fixed on the first spline shaft lower part 206 through a first thread sleeve 210, a sealing ring 209 is arranged between the first piston 208 and the first spline shaft lower part 206, a sealing ring is arranged between the first piston 208 and the first spline shaft lower part 206 and between the first piston 208 and the second spline shaft upper part 207, the first spline shaft lower part 206 is connected with the second spline shaft upper part 207 through a spline, the second spline shaft upper part 207 is connected with the second spline shaft lower part 211 through a thread, and the second piston 213 is fixed on the second spline shaft lower part 211 through a second thread sleeve 214, a seal ring is arranged between the second piston 213 and the second-stage spline shaft lower part 211, a seal ring is arranged between the second threaded sleeve 214 and the second-stage spline shaft lower part 211 and the third-stage spline shaft upper part 212, the second-stage spline shaft lower part 211 and the third-stage spline shaft upper part 212 are connected through a spline, the third-stage spline shaft upper part 212 and the third-stage spline shaft lower part 215 are connected through a thread, the third piston 216 is fixed on the third-stage spline shaft lower part 215 through a third threaded sleeve 217, a seal ring is arranged between the third piston 216 and the third-stage spline shaft lower part 215, a seal ring is arranged between the third threaded sleeve 217 and the third-stage spline shaft lower part 215 and the fourth-stage spline shaft 218, the third-stage spline shaft lower part 215 and the fourth-stage spline shaft 218 are connected through a spline, and the fourth piston 219 is fixed on the fourth-stage spline shaft 218 through a fourth threaded sleeve 220, a sealing ring is arranged between the fourth piston 219 and the fourth-stage spline shaft 218, a guide sleeve 221 is arranged at the bottom of the fourth-stage spline shaft 218, a felt ring 222 is arranged between the guide sleeve 221 and the fourth-stage spline shaft 218, a hydraulic cylinder cover 224 is arranged at the bottom of the guide sleeve 221, a felt ring is arranged between the hydraulic cylinder cover 224 and the fourth-stage spline shaft 218, the hydraulic cylinder cover 224 is connected with the hydraulic cylinder body 223 through threads, the spline shafts are all arranged in the hydraulic cylinder body 223, the sealing ring is arranged between the hydraulic cylinder body 223 and the piston, the sleeve 227 is connected with the hydraulic cylinder cover 224 through a fastening screw 225, the bearing support 205 is fixed on the transmission sleeve 227 through a threaded connection mode, and a tapered roller bearing 229 is assembled on the bearing support 205.
In the transmission part 2, a first-stage spline shaft upper part 204, a first-stage spline shaft lower part 206, a second-stage spline shaft upper part 207, a second-stage spline shaft lower part 211, a third-stage spline shaft upper part 212 and a third-stage spline shaft lower part 215 are hollow shafts, an external spline of a next-stage spline shaft is combined with an internal spline of a previous-stage spline shaft, and the next-stage spline shaft is positioned inside the previous-stage spline shaft during lifting; the spline shaft is used for trimming the end parts of the internal spline and the external spline in order to meet the requirement of smooth matching of the internal spline and the external spline during downward placement. The first oil port 226 is located on the hydraulic cylinder below the fourth piston 219; the second port 231 is located on the hydraulic cylinder below the third piston 216; the third oil port 230 is located on the hydraulic cylinder below the second piston 213; the fourth port 228 is located on the cylinder below the first piston 208.
The wellhead assembly is shown in fig. 4, the oil outlet tee 301 is fixed on a sleeve four-way joint 304 through a hexagon bolt 302, the sleeve four-way joint 304 can be fixed on a sleeve through threaded connection, the oil pipe hanger 303 is arranged inside the sleeve four-way joint 304, and sealing rings are arranged among the oil pipe hanger 303, the oil outlet tee 301 and the sleeve four-way joint 304.
The working principle of the invention is as follows: when oil extraction is performed in positive rotation, the hydraulic motor 101 drives the overrunning clutch 201 to rotate through the flat key 102, the overrunning clutch 201 drives the spline housing 203 to rotate through the second flat key 202, the upper part 204 of the first-stage spline shaft, the lower part 206 of the first-stage spline shaft, the upper part 207 of the second-stage spline shaft, the lower part 211 of the second-stage spline shaft, the upper part 212 of the third-stage spline shaft, the lower part 215 of the third-stage spline shaft and the fourth-stage spline shaft 218 are sequentially connected below the spline housing 203, and torque is transmitted to the underground sucker rod through the matching of the multi-stage spline shafts, so that a screw pump rotor is driven to rotate, and oil is lifted to the ground; when the screw pump stops, the hydraulic motor 101 gradually decelerates to make the rod column slowly stop rotating; the control system can then control the hydraulic motor 101 to rotate reversely, and the outer ring of the overrunning clutch 201 rotates reversely slowly along with the hydraulic motor through the flat key 102, so that the sucker rod string gradually releases reverse rotation potential energy. During the shutdown of the intermittent oil extraction, the screw pump rotor needs to be lifted for a certain distance to prevent adhesion between the stator and the rotor surface, so that the restarting is difficult or accidents occur, at this time, in the transmission part 2, the first oil port 226 is firstly filled with oil, hydraulic oil acts on the fourth piston 219, the hydraulic oil flows back to the oil tank through the second oil port 231, the fourth-stage spline shaft 218 is pushed into the hollow rod of the third-stage spline shaft, and the stroke is 2 meters; the hydraulic oil is continuously introduced, the second oil port 231 is closed, the hydraulic oil flows back to the oil tank through the third oil port 230, the fourth-stage spline shaft 218 and the third-stage spline shaft are pushed into the hollow rod of the second-stage spline shaft, and the stroke is 2 meters; and hydraulic oil is continuously introduced, the second oil port 231 and the third oil port 230 are closed, the hydraulic oil flows back to the oil tank through the fourth oil port 228, the fourth-stage spline shaft 218, the third-stage spline shaft and the second-stage spline shaft are pushed into the hollow rod of the first-stage spline shaft, the stroke is 2 meters, and the lifting of the sucker rod string is completed.
Claims (3)
1. The utility model provides an intermittent type oil production screw pump ground hydraulic drive device which characterized in that: the ground hydraulic driving device of the intermittent oil extraction screw pump comprises a driving head (1), a transmission part (2) and a wellhead assembly (3); the driving head (1) comprises a hydraulic motor (101), a flat key (102), a hydraulic motor base (104), a cover plate (106), an upper connecting cylinder (105), an outer shell and a lower connecting cylinder (109), wherein the hydraulic motor (101) is fixed with the hydraulic motor base (104) through a bolt, the hydraulic motor base (104) is connected with the upper connecting cylinder (105) through a bolt, the upper connecting cylinder (105) is connected with the cover plate (106) through a bolt, the bottom of the outer shell is fixed on the lower connecting cylinder (109) through a screw, and the lower connecting cylinder (109) is fixed on a wellhead assembly (3) through a bolt; an output shaft of the hydraulic motor (101) is connected with the transmission part (2) through a flat key (102), the transmission part (2) is fixed on the wellhead assembly (3) through a bolt, and the wellhead assembly (3) is directly fixed on an oil well casing in a threaded connection mode;
the transmission part (2) comprises an overrunning clutch (201), a bearing support seat (205), a first-stage spline shaft, a second-stage spline shaft, a first piston (208), a third-stage spline shaft, a fourth-stage spline shaft (218), a hydraulic cylinder body (223), a hydraulic cylinder cover (224) and a tapered roller bearing (229), wherein the outer ring of the overrunning clutch (201) is connected with a spline housing (203) through a second flat key (202), the spline housing (203) is connected with the first-stage spline shaft, a bearing is arranged between the upper end of the bearing support seat (205) and the first-stage spline shaft, the first-stage spline shaft extends into a transmission sleeve (227), and the bearing support seat (205) is fastened outside an upper port of the sleeve;
the upper end of the hydraulic cylinder body (223) forms a thin-wall end by arranging an annular boss, the thin-wall end of the hydraulic cylinder body (223) is fastened outside the thin-wall end of the lower end of the first-stage spline shaft, a first piston (208) is fixed at the lower end of the thin-wall end of the first-stage spline shaft through a first threaded sleeve (201), and the first piston (208) is located in an annular space between the thin-wall end of the hydraulic cylinder body (223) and the thin-wall end of the first-stage spline shaft; the upper end of the second-stage spline shaft extends into the first spline shaft, and a second piston (213) is fixed at the lower end of the second-stage spline shaft by a second threaded sleeve (214); the upper end of the third-stage spline shaft extends into the second spline shaft, and a third piston (216) is fixed at the lower end of the third-stage spline shaft through a third threaded sleeve (217); the upper end of the fourth-stage spline shaft (218) extends into the third spline shaft, a fourth piston (219) is fixed outside the fourth-stage spline shaft (218) through a fourth threaded sleeve (220), a guide sleeve (221) is arranged at the bottom of the fourth-stage spline shaft (218), a hydraulic cylinder cover (224) is fixed at the bottom of the hydraulic cylinder body (223), the hydraulic cylinder cover (224) is fixedly connected with the bottom of a transmission sleeve (227), and the lower end of the fourth-stage spline shaft (218) penetrates through the guide sleeve (221) and the hydraulic cylinder cover (224) to extend out of the transmission sleeve (227).
2. The intermittent oil extraction screw pump ground hydraulic drive device of claim 1, characterized in that: the spline sleeve (203) is connected with the upper part (204) of the first-stage spline shaft through a spline, the first-stage spline shaft is formed by connecting the upper part (204) of the first-stage spline shaft with the lower part (206) of the first-stage spline shaft through threads, the second-stage spline shaft is formed by connecting the upper part (207) of the second-stage spline shaft with the lower part (211) of the second-stage spline shaft through threads, and the third-stage spline shaft is formed by connecting the upper part (212) of the third-stage spline shaft with the lower part (215) of the third-stage spline shaft through threads; a sealing ring (209) is arranged between the first piston (208) and the lower part (206) of the first spline shaft, the sealing ring (209) is arranged between the first threaded sleeve (210) and the lower part (206) of the first-stage spline shaft and the upper part (207) of the second-stage spline shaft respectively, and the lower part (206) of the first-stage spline shaft is connected with the upper part (207) of the second-stage spline shaft through a spline; a sealing ring (209) is arranged between the second piston (213) and the lower part (211) of the second-stage spline shaft, the sealing ring (209) is arranged between the second threaded sleeve (214) and the lower part (211) of the second-stage spline shaft and the upper part (212) of the third-stage spline shaft respectively, and the lower part (211) of the second-stage spline shaft is connected with the upper part (215) of the third-stage spline shaft through a spline; a sealing ring is arranged between the third piston (216) and the lower part (215) of the third-stage spline shaft, a sealing ring is arranged between the third threaded sleeve (217) and the lower part (215) of the third-stage spline shaft and between the third threaded sleeve and the fourth-stage spline shaft (218), and the lower part (215) of the third-stage spline shaft is connected with the fourth-stage spline shaft (218) through a spline; fourth piston (219) and fourth stage integral key shaft (218) between be equipped with the sealing washer, uide bushing (221) and fourth stage integral key shaft (218) between be equipped with felt circle (222), hydraulic cylinder cap (224) and hydraulic cylinder body (223) pass through the screw thread and link to each other, each integral key shaft all arrange hydraulic cylinder body (223) inside, hydraulic cylinder body (223) and each piston between all be equipped with the sealing washer, the sleeve meet with hydraulic cylinder cap (224) through fastening screw (225), bearing support seat (205) fix on the sleeve through threaded connection's mode, bearing support seat (205) on assembly tapered roller bearing (229).
3. The intermittent oil extraction screw pump surface hydraulic drive device of claim 2, characterized in that: the wellhead assembly (3) comprises an oil outlet tee joint (301), a hexagon bolt (302), an oil pipe hanger (303) and a sleeve four-way joint (304); the oil outlet tee joint (301) is fixed on a sleeve four-way joint (304) through a hexagon bolt (302), the sleeve four-way joint (304) is fixed on a sleeve through threaded connection, the oil pipe hanger (301) is arranged in the sleeve four-way joint (304), and a sealing ring is arranged between the oil pipe hanger (303) and the oil outlet tee joint (301) as well as between the oil pipe hanger (303) and the sleeve four-way joint (304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210022801.2A CN114294219B (en) | 2022-01-10 | 2022-01-10 | Intermittent oil extraction screw pump ground hydraulic driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210022801.2A CN114294219B (en) | 2022-01-10 | 2022-01-10 | Intermittent oil extraction screw pump ground hydraulic driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114294219A true CN114294219A (en) | 2022-04-08 |
| CN114294219B CN114294219B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210022801.2A Active CN114294219B (en) | 2022-01-10 | 2022-01-10 | Intermittent oil extraction screw pump ground hydraulic driving device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2002122447A (en) * | 2002-08-19 | 2004-03-10 | ОАО Ярославский завод дизельной аппаратуры | Electronic-mechanical clutch for controlling the moment of the beginning of fuel injection |
| JP2005023834A (en) * | 2003-07-01 | 2005-01-27 | Shimadzu Corp | Multiple hydraulic gear pump |
| CN101016898A (en) * | 2007-02-12 | 2007-08-15 | 扬州大学 | Straight line driving reciprocating rotation screw pump |
| RU2008113684A (en) * | 2008-04-10 | 2009-10-20 | Открытое акционерное общество "Российская инновационная топливно-энергетическая компания (ОАО "РИТЭК") (RU) | SUPPORT ASSEMBLY OF SUBMERSIBLE SINGLE-SCREW PUMP INSTALLATION |
| US20090260800A1 (en) * | 2008-04-22 | 2009-10-22 | White Billy W | Sealed drive for a rotating sucker rod |
| CN108869273A (en) * | 2018-09-04 | 2018-11-23 | 扬州大学 | Reciprocating rotation screw pump based on the driving of sucker rod pumping bar |
| US20190072090A1 (en) * | 2016-02-25 | 2019-03-07 | Advancing Pump Technology Crop. | Electric motor and rod-driven rotary gear pumps |
-
2022
- 2022-01-10 CN CN202210022801.2A patent/CN114294219B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2002122447A (en) * | 2002-08-19 | 2004-03-10 | ОАО Ярославский завод дизельной аппаратуры | Electronic-mechanical clutch for controlling the moment of the beginning of fuel injection |
| JP2005023834A (en) * | 2003-07-01 | 2005-01-27 | Shimadzu Corp | Multiple hydraulic gear pump |
| CN101016898A (en) * | 2007-02-12 | 2007-08-15 | 扬州大学 | Straight line driving reciprocating rotation screw pump |
| RU2008113684A (en) * | 2008-04-10 | 2009-10-20 | Открытое акционерное общество "Российская инновационная топливно-энергетическая компания (ОАО "РИТЭК") (RU) | SUPPORT ASSEMBLY OF SUBMERSIBLE SINGLE-SCREW PUMP INSTALLATION |
| US20090260800A1 (en) * | 2008-04-22 | 2009-10-22 | White Billy W | Sealed drive for a rotating sucker rod |
| US20190072090A1 (en) * | 2016-02-25 | 2019-03-07 | Advancing Pump Technology Crop. | Electric motor and rod-driven rotary gear pumps |
| CN108869273A (en) * | 2018-09-04 | 2018-11-23 | 扬州大学 | Reciprocating rotation screw pump based on the driving of sucker rod pumping bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114294219B (en) | 2023-04-25 |
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