CN113090548A - Load-sharing type supercharging submersible pump applied to multi-layer natural gas co-well production - Google Patents

Load-sharing type supercharging submersible pump applied to multi-layer natural gas co-well production Download PDF

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Publication number
CN113090548A
CN113090548A CN202110410944.6A CN202110410944A CN113090548A CN 113090548 A CN113090548 A CN 113090548A CN 202110410944 A CN202110410944 A CN 202110410944A CN 113090548 A CN113090548 A CN 113090548A
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CN
China
Prior art keywords
cover body
disc
natural gas
submersible pump
transmission shaft
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Granted
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CN202110410944.6A
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Chinese (zh)
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CN113090548B (en
Inventor
李勇
许卫凯
吴鹏
高计县
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Publication of CN113090548A publication Critical patent/CN113090548A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Abstract

The utility model provides a be applied to branch year formula pressure boost immersible pump that multilayer natural gas co-well way closed-production, include from the last lid that sets gradually under to, the ring carrier, well lid, drum shell and lower end cover, the ring carrier excircle is equipped with the rubber circle, be equipped with the pressure boost turbine in the last lid, be equipped with central transmission shaft along the central line in the drum shell, the ring carrier is passed to central transmission shaft upper end and is connected with the pressure boost turbine transmission, be equipped with a plurality of hollow shaft around central transmission shaft arranges in the drum shell, the hollow shaft inner wall is equipped with helical blade, all be provided with a motor between two adjacent hollow shafts. The load-sharing type supercharging submersible pump has an exquisite structure, ensures large pumping power under small volume, can be used in series at the same time, can customize different submersible pump installation schemes according to different underground working conditions, and improves the working efficiency while reducing the energy consumption.

Description

Load-sharing type supercharging submersible pump applied to multi-layer natural gas co-well production
Technical Field
The invention belongs to the technical field of submersible pumps, is applied to multilayer unconventional natural gas (including coal bed gas, shale gas, compact sandstone devices and the like), and particularly relates to a partial-load type pressurizing submersible pump applied to multilayer natural gas co-production in a same well.
Background
The submersible pump is a mechanical device which puts both a pump body and a motor into water to work, and is an important device for deep well water lifting. Submersible pumps can be classified into two types according to their operating principles, one being impeller pumps, such as centrifugal pumps, and the other being positive displacement pumps, such as progressive cavity pumps. The centrifugal pump conveys liquid by the centrifugal force generated when the impeller rotates, has simple structure and reliable work, can be applied to various production and living scenes, but is not suitable for mines with smaller diameter due to larger volume; screw pumps are rotary pumps that transport liquids by changing the volume of an engagement space formed between a pump body and a screw and moving the screw, and are widely used in mines because of their slender pump body. The existing screw pump adopts a form that a common motor directly drives a screw, so that the screw pump must be submerged to the bottom of a well when in use, and the screw pump is not suitable for certain oil and gas wells which need specific formation liquid separate production. The utility model of application CN201420547777.5 provides an immersible pump using a hollow shaft motor as a drive, which has low working efficiency due to the small diameter of the hollow shaft (inner spiral tube).
Disclosure of Invention
The invention aims to provide a load-sharing type pressurizing submersible pump applied to combined production of multilayer natural gas in the same well way, which has a compact structure, can be fixed at any depth in the well way, and has high lift and high working efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme: a load-sharing type supercharging submersible pump applied to multi-layer natural gas co-well-production comprises an upper cover body, an annular support, a middle cover body, a cylindrical shell and a lower cover which are sequentially arranged from top to bottom, wherein a rubber ring is arranged on the outer circle of the annular support, a supercharging turbine is arranged in the upper cover body, a central transmission shaft is arranged in the cylindrical shell along the central line, the upper end of the central transmission shaft penetrates through the annular support to be in transmission connection with the supercharging turbine, a plurality of hollow shafts arranged around the central transmission shaft are arranged in the cylindrical shell, helical blades are arranged on the inner walls of the hollow shafts, two motors which correspond up and down are arranged between every two adjacent hollow shafts, the motor at the upper side is fixed on the lower surface of the middle cover body, the motor at the lower side is fixed on the upper surface of the lower cover, a main shaft of each, the central transmission shaft is provided with two driven gears, the driven gear on the upper side is meshed with gear rings on the upper parts of all the hollow shafts simultaneously, the driven gear on the lower side is meshed with gear rings on the lower parts of all the hollow shafts simultaneously, the upper ends of all the hollow shafts are communicated with the inside of the upper cover body, and the upper end of the upper cover body is provided with a pipe joint.
The lower end cover is fixedly connected with the lower end of the cylindrical shell through a short screw, a first sealing ring is arranged between the upper surface of the lower end cover and the lower end face of the cylindrical shell, a through lower through hole corresponding to the lower port of the hollow shaft is formed in the lower end cover, and a second sealing ring is arranged between the outer circle of the lower end of each hollow shaft and the lower end cover.
The annular support comprises an upper disc and a lower disc which are horizontally arranged, a plurality of supporting sleeves are fixedly arranged between the edges of the lower surface of the upper disc and the upper surface of the lower disc, a first upper through hole is formed in the upper disc, a second upper through hole is formed in the lower disc, and the upper through holes of the first upper through hole, the second upper through hole and the upper port of the hollow shaft are through in one-to-one correspondence.
The lower end face of the upper cover body, the upper disc, the supporting sleeve, the lower disc, the middle cover body and the upper end face of the cylindrical shell are connected into a whole through long screws, the upper end edge of the rubber ring is bent inwards horizontally to form an upper gasket to be clamped between the lower end face of the upper cover body and the upper end face of the upper disc, and the lower end edge of the rubber ring is bent inwards horizontally to form a lower gasket to be clamped between the upper end face of the middle cover body and the lower end face of the lower disc.
A third upper through hole corresponding to the upper port of the hollow shaft is formed in the middle cover body, a third sealing ring is arranged between the lower surface of the middle cover body and the upper end face of the cylindrical shell, a fourth sealing ring is arranged between the upper surface of the middle cover body and the lower surface of the lower disc, a fifth sealing ring is arranged between the upper surface of the upper disc and the lower surface of the upper cover body, and a sixth sealing ring is arranged between each outer circle of the upper end of the hollow shaft and the middle cover body.
A center sleeve is fixedly arranged between the centers of the upper disc and the lower disc, the upper end of a center transmission shaft sequentially penetrates through the middle cover body, the lower disc, the center sleeve and the upper disc from bottom to top and extends into the upper cover body and is connected with the booster turbine through spline transmission, the lower end of the center transmission shaft is rotatably connected with the center of the lower end cover through a lower bearing, the upper end of the center transmission shaft is rotatably connected with the center hole of the middle cover body through an upper bearing, a seventh sealing ring is arranged between the excircle of the center transmission shaft and the center hole of the middle cover body, and an eighth sealing ring is arranged between the excircle of the center transmission shaft.
The upper part of the rubber ring is fixedly connected to the outer circle of the upper disc through a plurality of upper rivets arranged at intervals along the circumferential direction, and the lower part of the rubber ring is fixedly connected to the outer circle of the lower disc through a plurality of lower rivets arranged at intervals along the circumferential direction.
The upper cover body and the supercharging turbine are both in a conical cylinder structure with a thin upper part and a thick lower part.
A hanging ring is fixedly arranged on the upper cover body.
A through hole is arranged between the lower end surface of the cylindrical shell and the lower end cover, and the motor is connected with a power supply cable penetrating through the through hole.
By adopting the technical scheme, the working process of the invention is as follows: go up the coupling connection water pipe of lid upper end, the lifting rope is connected to rings, put the immersible pump in the well by the well mouth of oil gas well down, the power supply cable also transfers along with the immersible pump, when falling to the appointed degree of depth, starter motor, the motor drives drive gear and rotates, drive gear drive ring gear rotates, the ring gear drives the hollow shaft rotation, the helical blade of hollow shaft inner wall is high-speed rotatory, upwards the suction of water of port to the ring carrier under the hollow shaft, reentrant in the upper cover body, ring gear drive driven gear, driven gear drives the high-speed rotation of central transmission shaft, central transmission shaft drives the booster turbine of upper end splined connection and further high-speed rotation (the ring gear diameter is greater than the driven gear diameter), enter into the inside water of upper cover body, further pressure boost through booster turbine is carried upwards, water in the well is carried ground.
Because the immersible pump can outwards jack up the rubber circle through water pressure at the during operation, the rubber circle is the crimping with the well inner wall after radial expansion to fix the immersible pump in the well, thereby alleviate the pulling force of lifting rope. Ensuring continuous operation at a certain depth.
The upper gasket at the upper end edge of the rubber ring and the lower gasket at the lower end edge of the rubber ring have the sealing connection effect, and meanwhile, the rubber ring is fixedly connected with the disc by rivets, so that the firm fixation and stability of the rubber ring are ensured.
The structure of the invention adopts the upper cover body, the annular bracket, the middle cover body, the cylindrical shell and the lower end cover which are assembled in a split way, and adopts a plurality of gaskets for sealing, thereby not only being convenient for manufacturing, but also being convenient and fast to install, having strong sealing performance, and ensuring the normal and stable work of the motor, the driving gear, the gear ring and the driven gear in a waterless space.
In conclusion, in order to improve the pumping efficiency, the load-sharing type supercharging submersible pump is provided with a plurality of groups of hollow shafts (helical blades) and motors, the internal space of the pump body is optimized, and the pumping power per unit volume is improved; the load-sharing type pressurizing submersible pump does not need to be placed at the bottom of a well because the drainage channel is communicated up and down, can be placed in the well at will, and is favorable for realizing separate mining of specific rock stratum liquid; this partial load formula pressure boost immersible pump passes through water pressure jack-up rubber circle at the during operation, can fix the pump body at the well and seal from top to bottom, consequently can lay several immersible pump collaborative work in same well, further improves power and efficiency of drawing water. This partial load formula pressure boost immersible pump structure is exquisite, guarantees the big power of drawing water under the little volume, can only establish ties simultaneously and use, can customize different immersible pump installation schemes according to the operating mode in the pit of difference, has improved work efficiency when reducing energy resource consumption.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic perspective view of the present invention with the upper cover, rubber ring and cylindrical shell removed.
Fig. 3 is an axial cross-sectional view of the present invention.
Fig. 4 is a schematic cross-sectional view of the present invention.
Fig. 5 is a schematic view of the working state of the invention in the well (radial expansion of the rubber sleeve is pressed against the inner wall of the well).
Detailed Description
As shown in fig. 1-5, the load-sharing type supercharging submersible pump applied to multi-layer natural gas co-production in the same well way comprises an upper cover body 1, an annular support, a middle cover body 2, a cylindrical shell 3 and a lower cover body 4 which are sequentially arranged from top to bottom, wherein a rubber ring 5 is arranged on the outer circle of the annular support, a supercharging turbine 6 is arranged in the upper cover body 1, a central transmission shaft 7 is arranged in the cylindrical shell 3 along the central line, the upper end of the central transmission shaft 7 penetrates through the annular support to be in transmission connection with the supercharging turbine 6, a plurality of hollow shafts 8 arranged around the central transmission shaft 7 are arranged in the cylindrical shell 3, helical blades 9 are arranged on the inner walls of the hollow shafts 8, two motors 10 corresponding to each other up and down are respectively arranged between every two adjacent hollow shafts 8, the motor 10 on the upper side is fixed on the lower surface of the middle cover body 2, every 8 excircles of hollow shaft all are equipped with two ring gears 12, every drive gear 11 all corresponds and meshes simultaneously with two adjacent ring gears 12, be equipped with two driven gear 13 on the central drive shaft 7, the driven gear 13 of upside meshes simultaneously with the ring gear 12 on all 8 upper portions of hollow shaft, driven gear 13 of downside meshes simultaneously with the ring gear 12 of all 8 lower parts of hollow shaft, all 8 upper ends of hollow shaft all communicate with the inside of upper cover body 1, the upper end of upper cover body 1 is equipped with coupling 14.
The lower end cover 4 is fixedly connected with the lower end of the cylindrical shell 3 through a short screw 15, a first sealing ring is arranged between the upper surface of the lower end cover 4 and the lower end surface of the cylindrical shell 3, a lower through hole corresponding to the lower port of the hollow shaft 8 is formed in the lower end cover 4, and a second sealing ring is arranged between the outer circle of the lower end of each hollow shaft 8 and the lower end cover 4.
The annular support comprises an upper disc 18 and a lower disc 19 which are horizontally arranged, a plurality of supporting sleeves 20 are fixedly arranged between the lower surface of the upper disc 18 and the edge of the upper surface of the lower disc 19, a first upper through hole is formed in the upper disc 18, a second upper through hole is formed in the lower disc 19, and the first upper through hole, the second upper through hole and an upper port of the hollow shaft 8 are vertically and correspondingly communicated one by one.
The lower end face of the upper cover body 1, the upper disc 18, the supporting sleeve 20, the lower disc 19, the middle cover body 2 and the upper end face of the cylindrical shell 3 are connected into a whole through long screws 21, the upper end edge of the rubber ring 5 is bent inwards horizontally to form an upper gasket to be clamped between the lower end face of the upper cover body 1 and the upper end face of the upper disc 18, and the lower end edge of the rubber ring 5 is bent inwards horizontally to form a lower gasket to be clamped between the upper end face of the middle cover body 2 and the lower end face of the lower disc 19.
A third upper through hole corresponding to the upper port of the hollow shaft 8 is formed in the middle cover body 2, a third sealing ring is arranged between the lower surface of the middle cover body 2 and the upper end surface of the cylindrical shell 3, a fourth sealing ring is arranged between the upper surface of the middle cover body 2 and the lower surface of the lower disc 19, a fifth sealing ring is arranged between the upper surface of the upper disc 18 and the lower surface of the upper cover body 1, and a sixth sealing ring is arranged between each outer circle of the upper end of the hollow shaft 8 and the middle cover body 2.
A center sleeve 26 is fixedly arranged between the centers of the upper disc 18 and the lower disc 19, the upper end of a center transmission shaft 7 sequentially penetrates through the middle cover body 2, the lower disc 19, the center sleeve 26 and the upper disc 18 into the upper cover body 1 and is in transmission connection with the booster turbine 6 through splines, the lower end of the center transmission shaft 7 is rotatably connected to the center of the lower end cover 4 through a lower bearing, the upper end of the center transmission shaft 7 is rotatably connected with a center hole of the middle cover body 2 through an upper bearing, a seventh sealing ring is arranged between the excircle of the center transmission shaft 7 and the center hole of the middle cover body 2, and an eighth sealing ring is arranged between the excircle of the center transmission shaft 7 and the center hole of the upper.
The upper part of the rubber ring 5 is fixedly connected with the excircle of the upper disc 18 through a plurality of upper rivets 29 arranged at intervals along the circumferential direction, and the lower part of the rubber ring 5 is fixedly connected with the excircle of the lower disc 19 through a plurality of lower rivets 30 arranged at intervals along the circumferential direction.
The upper cover body 1 and the booster turbine 6 are both in a conical cylinder structure with a thin upper part and a thick lower part.
A hanging ring 31 is fixedly arranged on the upper cover body 1.
A through hole is arranged between the lower end surface of the cylindrical shell 3 and the lower end cover 4, and the motor 10 is connected with a power supply cable 32 passing through the through hole.
The working process of the invention is as follows: the pipe joint 14 at the upper end of the upper cover body 1 is connected with a water pipe, the lifting ring 31 is connected with a lifting rope, a submersible pump is placed into a well 22 from a well mouth of an oil-gas well, a power supply cable 32 is also placed along with the submersible pump and falls to a specified depth, the motor 10 is started, the motor 10 drives the driving gear 11 to rotate, the driving gear 11 drives the gear ring 12 to rotate, the gear ring 12 drives the hollow shaft 8 to rotate, the helical blades 9 on the inner wall of the hollow shaft 8 rotate at a high speed, water at the lower port of the hollow shaft 8 is upwards pumped into the annular bracket and then enters the upper cover body 1, the gear ring 12 drives the driven gear 13, the driven gear 13 drives the central transmission shaft 7 to rotate at a high speed, the central transmission shaft 7 drives the booster turbine 6 in splined connection with the upper end to further rotate at a high speed (the diameter of the gear, water within the hoistway 22 is transported to the surface by a water line.
Because the immersible pump can outwards jack up rubber circle 5 through water pressure at the during operation, rubber circle 5 radially expands back and well 22 inner wall crimping to fix the immersible pump in well 22, thereby alleviate the pulling force of lifting rope. Ensuring continuous operation at a certain depth.
The upper gasket at the edge of the upper end of the rubber ring 5 and the lower gasket at the edge of the lower end have the effect of sealing connection, and meanwhile, the rubber ring 5 is fixedly connected with the disc by rivets, so that the firm fixation and stability of the rubber ring 5 are ensured.
The structure of the invention adopts the upper cover body 1, the annular bracket, the middle cover body 2, the cylindrical shell 3 and the lower end cover 4 which are assembled in a split way, and adopts a plurality of gaskets for sealing, thereby not only being convenient for manufacturing, but also being convenient and fast to install, having strong sealing performance, and ensuring the normal and stable work of the motor 10, the driving gear 11, the gear ring 12 and the driven gear 13 in an anhydrous space.
The foregoing embodiments illustrate the principles and features of the present invention, but the above description is only illustrative of the preferred embodiments of the present invention and is not meant to be limiting of the embodiments. In the light of this patent, those skilled in the art can make various changes and modifications without departing from the spirit of the invention and the scope of the appended claims. Therefore, the patent and protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a be applied to branch year formula pressure boost immersible pump that multilayer natural gas co-well way closed production which characterized in that: the device comprises an upper cover body, an annular support, a middle cover body, a cylindrical shell and a lower cover which are sequentially arranged from top to bottom, wherein a rubber ring is arranged on the excircle of the annular support, a booster turbine is arranged in the upper cover body, a central transmission shaft is arranged in the cylindrical shell along the central line, the upper end of the central transmission shaft penetrates through the annular support and is in transmission connection with the booster turbine, a plurality of hollow shafts arranged around the central transmission shaft are arranged in the cylindrical shell, helical blades are arranged on the inner wall of each hollow shaft, two motors which correspond up and down are respectively arranged between every two adjacent hollow shafts, the motor at the upper side is fixed on the lower surface of the middle cover body, the motor at the lower side is fixed on the upper surface of the lower cover, a driving gear is arranged on a main shaft of each motor, two gear rings are arranged on the excircle of each hollow shaft, the driven gear on the lower side is meshed with the gear rings on the lower parts of all the hollow shafts simultaneously, the upper ends of all the hollow shafts are communicated with the inside of the upper cover body, and the upper end of the upper cover body is provided with a pipe joint.
2. The partial-load type booster submersible pump applied to co-production of multi-layer natural gas in the same well and channel as claimed in claim 1, is characterized in that: the lower end cover is fixedly connected with the lower end of the cylindrical shell through a short screw, a first sealing ring is arranged between the upper surface of the lower end cover and the lower end face of the cylindrical shell, a through lower through hole corresponding to the lower port of the hollow shaft is formed in the lower end cover, and a second sealing ring is arranged between the outer circle of the lower end of each hollow shaft and the lower end cover.
3. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel as claimed in claim 2, is characterized in that: the annular support comprises an upper disc and a lower disc which are horizontally arranged, a plurality of supporting sleeves are fixedly arranged between the edges of the lower surface of the upper disc and the upper surface of the lower disc, a first upper through hole is formed in the upper disc, a second upper through hole is formed in the lower disc, and the upper through holes of the first upper through hole, the second upper through hole and the upper port of the hollow shaft are through in one-to-one correspondence.
4. The partial-load type booster submersible pump applied to co-production of multi-layer natural gas in the same well and channel as claimed in claim 3, is characterized in that: the lower end face of the upper cover body, the upper disc, the supporting sleeve, the lower disc, the middle cover body and the upper end face of the cylindrical shell are connected into a whole through long screws, the upper end edge of the rubber ring is bent inwards horizontally to form an upper gasket to be clamped between the lower end face of the upper cover body and the upper end face of the upper disc, and the lower end edge of the rubber ring is bent inwards horizontally to form a lower gasket to be clamped between the upper end face of the middle cover body and the lower end face of the lower disc.
5. The partial-load type booster submersible pump applied to co-production of multi-layer natural gas in the same well and channel is characterized in that: a third upper through hole corresponding to the upper port of the hollow shaft is formed in the middle cover body, a third sealing ring is arranged between the lower surface of the middle cover body and the upper end face of the cylindrical shell, a fourth sealing ring is arranged between the upper surface of the middle cover body and the lower surface of the lower disc, a fifth sealing ring is arranged between the upper surface of the upper disc and the lower surface of the upper cover body, and a sixth sealing ring is arranged between each outer circle of the upper end of the hollow shaft and the middle cover body.
6. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel is characterized in that: a center sleeve is fixedly arranged between the centers of the upper disc and the lower disc, the upper end of a center transmission shaft sequentially penetrates through the middle cover body, the lower disc, the center sleeve and the upper disc from bottom to top and extends into the upper cover body and is connected with the booster turbine through spline transmission, the lower end of the center transmission shaft is rotatably connected with the center of the lower end cover through a lower bearing, the upper end of the center transmission shaft is rotatably connected with the center hole of the middle cover body through an upper bearing, a seventh sealing ring is arranged between the excircle of the center transmission shaft and the center hole of the middle cover body, and an eighth sealing ring is arranged between the excircle of the center transmission shaft.
7. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel is characterized in that: the upper part of the rubber ring is fixedly connected to the outer circle of the upper disc through a plurality of upper rivets arranged at intervals along the circumferential direction, and the lower part of the rubber ring is fixedly connected to the outer circle of the lower disc through a plurality of lower rivets arranged at intervals along the circumferential direction.
8. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel is characterized in that: the upper cover body and the supercharging turbine are both in a conical cylinder structure with a thin upper part and a thick lower part.
9. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel is characterized in that: a hanging ring is fixedly arranged on the upper cover body.
10. The partial-load type booster submersible pump applied to co-production of multilayer natural gas in the same well and channel is characterized in that: a through hole is arranged between the lower end surface of the cylindrical shell and the lower end cover, and the motor is connected with a power supply cable penetrating through the through hole.
CN202110410944.6A 2021-04-16 2021-04-16 Load-sharing type supercharging submersible pump applied to multi-layer natural gas co-well production Active CN113090548B (en)

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Publication number Priority date Publication date Assignee Title
US5951262A (en) * 1997-04-18 1999-09-14 Centriflow Llc Mechanism for providing motive force and for pumping applications
CN102758778A (en) * 2012-07-30 2012-10-31 宁波巨神制泵实业有限公司 Core-pulling type submersible pump and mounting method thereof
CN102996463A (en) * 2012-11-02 2013-03-27 陈浩 Efficient electric submersible pump
CN204099231U (en) * 2014-09-23 2015-01-14 郑鲁生 Submersible pump
CN107100836A (en) * 2017-04-26 2017-08-29 哈尔滨工程大学 A kind of Unitary Impeller is pressurized three screw pump
CN207830155U (en) * 2018-02-01 2018-09-07 浙江大明机电有限公司 A kind of immersible pump pump head structure
CN211259043U (en) * 2019-09-27 2020-08-14 德能泵业（天津）有限公司 Novel high-efficient water lift immersible pump
CN111706524A (en) * 2020-07-27 2020-09-25 滕文彪 Disc vortex type submersible pump
CN112096324A (en) * 2020-09-18 2020-12-18 吉林大学 Multistage circulation mechanism for drilling fluid of drilling tool in well

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