CN111255673A - Reciprocating type variable-frequency deep submersible pump and control method thereof - Google Patents
Reciprocating type variable-frequency deep submersible pump and control method thereof Download PDFInfo
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- CN111255673A CN111255673A CN202010121051.5A CN202010121051A CN111255673A CN 111255673 A CN111255673 A CN 111255673A CN 202010121051 A CN202010121051 A CN 202010121051A CN 111255673 A CN111255673 A CN 111255673A
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- water
- submersible pump
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- rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a reciprocating variable-frequency deep submersible pump and a control method thereof, belonging to the technical field of deep submersible pumps.A water channel is arranged at the inner side of a perforated rotor, the stator and the rotor are mutually matched by starting a linear motor to drive the rotor to do up-and-down circular motion, when the water level of a deep well reaches a certain liquid level, a pressure switch or a liquid level meter acts, signals are transmitted to an analog-digital converter, and finally pulse signals are transmitted to a ground controller to implement the linkage operation of the water pump motor and the water level height so as to realize PID adjustment. When the water level exceeds the set value, the water pump motor is automatically started, and when the water level is lower than the set value, the motor stops running, so that the reciprocating type variable frequency deep submersible pump controlled by automatic variable frequency regulation is used for pumping water or oil, the working efficiency is improved, and the energy consumption is reduced.
Description
Technical Field
The invention relates to a deep submersible pump, in particular to a reciprocating type variable frequency deep submersible pump and a control method thereof, and belongs to the technical field of deep submersible pumps.
Background
The reciprocating type deep submersible pump is a new generation of equipment suitable for oil extraction (fishing) and water extraction of a deep well with low productivity, and the instantaneous flow rate is 0.1-4 m 3/h. The equipment mainly comprises a linear motor, a water inlet and outlet chamber, a sand remover and an instrument controller. The center of the rotor shaft is provided with a water channel which is submerged in water under the stratum, so that the integrated operation of the machine and the pump is realized. Wherein the linear motor is in the middle, the motor stator is respectively connected with the upper pump cylinder and the lower pump cylinder, and the oil extraction and water extraction functions at 3000 meters under the stratum are realized through the up-and-down reciprocating motion of the rotor.
The reciprocating type deep submersible pump in the prior art has lower working efficiency and larger energy consumption loss when in use, and a novel reciprocating type variable-frequency deep submersible pump is designed to optimize the problems.
Disclosure of Invention
The invention aims to provide a reciprocating variable-frequency deep submersible pump and a control method thereof.A water channel is arranged at the inner side of a perforated rotor, the stator and the rotor are mutually matched by starting a linear motor to drive the rotor to do up-and-down cyclic motion, when the water level of a deep well reaches a certain liquid level, a pressure switch or a liquid level meter acts, signals are transmitted to an analog-digital converter, and finally pulse signals are transmitted to a ground controller to implement the linkage operation of a water pump motor and the height of the water level so as to realize PID (proportion integration differentiation) regulation. When the water level exceeds the set value, the water pump motor is automatically started, and when the water level is lower than the set value, the motor stops running, so that the reciprocating type variable frequency deep submersible pump controlled by automatic variable frequency regulation is used for pumping water or oil, the working efficiency is improved, and the energy consumption is reduced.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a reciprocating type frequency conversion deep submersible pump, includes the shell and installs the shell is inboard and follows the stator of the inboard axial distribution of shell, the stator is along when the inboard axial distribution of shell and surround this the inboard radial distribution of shell is located the inboard edge of stator run through the cover in the stator axial and be equipped with the active cell, just the inboard edge of active cell the water course has been seted up in the active cell axial, water check valve, water purification check valve are installed respectively to the top and the bottom of active cell, the below of shell is equipped with pressure switch and level gauge.
Preferably, the bottom of the shell is provided with a sand remover communicated with the inner side of the shell, and the pressure switch and the liquid level meter are both positioned on the inner side of the sand remover.
Preferably, the mover and the stator are combined to form a linear motor, and a thermistor is mounted on one side of the stator facing the mover.
Preferably, the bottom of the two sides of the shell is provided with a first centralizer, the top of the two sides of the shell is provided with a second centralizer, and the first centralizer and the second centralizer on the same side of the shell are on the same axis.
Preferably, a piston is installed at the top of the mover, and the water outlet check valve is located at the middle position of the inner side of the piston and is communicated with the water channel.
Preferably, a traveling valve is arranged at the bottom of the shell and between the tops of the sand removers.
Preferably, the top of the shell is provided with a water outlet and water storage device, and a leak-proof valve communicated with a cavity formed by the water outlet and the piston is arranged in the middle of the top of the water outlet and water storage device.
Preferably, an electric submersible pump outlet joint is installed at the top of the water outlet and water storage device, and a coupling is arranged on the outer side of one end, far away from the piston, of the electric submersible pump outlet joint.
Preferably, the inner side wall of the shell sleeve is provided with a water pump cable, and the water pump cable is communicated with the linear motor.
Preferably, a sand baffle is arranged between the piston and the top of the stator, and a water purification chamber is formed between the water purification check valve and the traveling valve.
A reciprocating type frequency conversion deep submersible pump control method comprises the following steps:
step 1: when the water level of the deep well water reaches a certain liquid level, detecting the water level through a liquid level meter or a pressure switch, and outputting a detection signal to an analog/digital converter;
step 2: transmitting the acquired and converted signals to a ground controller to start a linear motor, so that a stator of the linear motor drives a rotor to move upwards;
and step 3: when the stator drives the rotor to move upwards, the traveling valve and the leak-proof valve are opened simultaneously, and the water outlet check valve and the water purification check valve are closed simultaneously, so that the water after sand removal enters the inner side of the water channel, and meanwhile, the water is pumped into the sand remover for sand removal treatment;
and 4, step 4: then enters the inner side of the water outlet and storage device through the water channel;
and 5: the sand is blocked by the sand blocking plate, and the flow is guided by the flow guide plate;
step 6: closing the water outlet check valve, and pushing water inside the water outlet water storage device into the inner side of the outlet connector of the electric submersible pump;
and 7: the stator drives the rotor to move downwards, and meanwhile, the leakage-proof valve and the traveling valve are closed;
and 8: and performing 1-7 steps of cyclic work.
The invention has the beneficial technical effects that:
a reciprocating frequency-varying submersible pump is composed of a perforated rotor, a linear motor, a stator matched with said rotor to drive said rotor to move up and down cyclically, an analog-digital converter, a pressure switch or level meter, and a ground controller for linking the water pump with its height. When the water level exceeds the set value, the water pump motor is automatically started, and when the water level is lower than the set value, the motor stops running, so that the reciprocating type variable frequency deep submersible pump controlled by automatic variable frequency regulation is used for pumping water or oil, the working efficiency is improved, and the energy consumption is reduced.
Drawings
FIG. 1 is a side cross-sectional view of a preferred embodiment of a reciprocating variable frequency deep submersible pump and method of controlling the same according to the present invention.
In the figure: 1-a leakage-proof valve, 2-a water pump cable, 3-a water outlet check valve, 4-a sand baffle, 5-a stator, 6-a rotor, 7-a water purification check valve, 8-a traveling valve, 9-a pressure switch, 10-a liquid level meter, 11-a sand remover, 12-a water purification chamber, 13-a first centralizer, 14-a thermistor, 15-a linear motor, 16-a piston, 17-a second centralizer, 18-a water outlet and water storage device, 19-an electric submersible pump outlet joint, 20-a coupling, 21-a housing and 22-a water channel.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example one
As shown in fig. 1, the reciprocating variable-frequency deep submersible pump provided in this embodiment includes a casing 21 and stators 5 installed inside the casing 21 and axially distributed along the inside of the casing 21, the stators 5 are axially distributed along the inside of the casing 21 and radially distributed around the inside of the casing 21, a mover 6 is sleeved on the inside of the stator 5 and axially penetrates the stator 5, a water channel 22 is formed on the inside of the mover 6 and axially along the mover 6, a water outlet check valve 3 and a water purification check valve 7 are respectively installed on the top and the bottom of the mover 6, and a pressure switch 9 and a liquid level meter 10 are installed below the casing 21.
The shell 21 is placed on the inner side of the perforated pipeline, the stator 5 and the rotor 6 are matched with each other by starting the linear motor 15, the rotor 6 is driven to do up-and-down circular motion on the inner side of the shell 21, when the water level of the deep well reaches a certain liquid level, the pressure switch 9 or the liquid level meter 10 acts, signals are transmitted to the analog-digital converter, and finally pulse signals are transmitted to the ground controller to implement the linkage operation of the water pump motor and the water level height, so that PID adjustment is achieved. When the water level exceeds the set value, the motor of the water pump is automatically started, and when the water level is lower than the set value, the motor stops running.
In the present embodiment, the bottom of the housing 21 is mounted with the desander 11 communicating with the inside of the housing 21, and the pressure switch 9 and the liquid level gauge 10 are both located inside the desander 11.
In the present embodiment, the mover 6 and the stator 5 are combined to constitute the linear motor 15, and the thermistor 14 is mounted on the side of the stator 5 facing the mover 6.
In this embodiment, the bottom of two sides of casing 21 is installed with first centralizer 13, and the top of two sides of casing 21 is installed with second centralizer 17, and first centralizer 13 and second centralizer 17 on the same side of casing 21 are on the same axis.
In the present embodiment, a piston 16 is installed on the top of the mover 6, and the water outlet check valve 3 is located at a middle position inside the piston 16 and communicates with the water passage 22.
In this embodiment, a traveling valve 8 is provided at the bottom of the housing 21 and between the tops of the sand separators 11.
In this embodiment, the top of the housing 21 is provided with the outlet reservoir 18, and the middle position of the top of the outlet reservoir 18 is provided with the leak-proof valve 1 communicated with the cavity formed by the outlet reservoir 18 and the piston 16.
In this embodiment, an electrical submersible pump outlet connector 19 is mounted on the top of the effluent reservoir 18, and a collar 20 is provided on the outside of the end of the electrical submersible pump outlet connector 19 remote from the piston 16.
In this embodiment, the inner side wall of the housing 21 is provided with the water pump cable 2, and the water pump cable 2 is communicated with the linear motor 15.
In this embodiment, a sand guard 4 is provided between the piston 16 and the top of the stator 5, and a clean water chamber 12 is formed between the clean water check valve 7 and the traveling valve 8.
Example two
A reciprocating type frequency conversion deep submersible pump control method comprises the following steps:
step 1: when the water level of the deep well water reaches a certain liquid level, the deep well water is detected by a liquid level meter (10) or a pressure switch (9), and a detection signal is output to an analog/digital converter;
step 2: transmitting the acquired and converted signals to a ground controller to start a linear motor (15) so that a stator (5) of the linear motor drives a rotor (6) to move upwards;
and step 3: when the stator (5) drives the rotor (6) to move upwards, the traveling valve (8) and the leakage-proof valve (1) are opened simultaneously, the water outlet check valve (3) and the water purification check valve (7) are closed simultaneously, so that the water after sand removal enters the inner side of the water channel (22), and meanwhile, the water is pumped into the sand remover (11) for sand removal treatment;
and 4, step 4: then enters the inner side of the water outlet and storage device (18) through the water channel (22);
and 5: sand is blocked by a sand blocking plate (4), and flow is guided by a flow guide plate;
step 6: closing the water outlet check valve (3) and pushing water inside the water outlet water storage device (18) into the inner side of an outlet connector (19) of the electric submersible pump;
and 7: the stator (5) drives the rotor (6) to move downwards, and meanwhile, the leakage-proof valve (1) and the traveling valve (8) are closed;
and 8: and performing 1-7 steps of cyclic work.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (10)
1. A reciprocating type frequency conversion deep submersible pump is characterized in that: including shell (21) and install shell (21) inboard and edge stator (5) that shell (21) inboard axial distributes, stator (5) are along when shell (21) inboard axial distributes and encircle this shell (21) inboard radial distribution is located the inboard edge of stator (5) run through the cover in the stator (5) axial and be equipped with active cell (6), just the inboard edge of active cell (6) the water course (22) have been seted up in active cell (6) axial, go out water check valve (3), water purification check valve (7) are installed respectively to the top and the bottom of active cell (6), the below of shell (21) is equipped with pressure switch (9) and level gauge (10).
2. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: the bottom of the shell (21) is provided with a sand remover (11) communicated with the inner side of the shell (21), and the pressure switch (9) and the liquid level meter (10) are both positioned on the inner side of the sand remover (11).
3. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: the rotor (6) and the stator (5) are combined to form a linear motor (15), and a thermistor (14) is mounted on one side, facing the rotor (6), of the stator (5).
4. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: the bottom of shell (21) both sides is installed first centralizer (13), and the top of shell (21) both sides is installed second centralizer (17), in shell (21) same side first centralizer (13) with second centralizer (17) are on same axis.
5. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: and a piston (16) is installed at the top of the rotor (6), and the water outlet check valve (3) is positioned in the middle position of the inner side of the piston (16) and communicated with the water channel (22).
6. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: and a traveling valve (8) is arranged at the bottom of the shell sleeve (21) and between the tops of the sand removers (11).
7. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: the top of the shell sleeve (21) is provided with a water outlet and water storage device (18), and the middle position of the top of the water outlet and water storage device (18) is provided with a leakage-proof valve (1) communicated with a cavity formed by the water outlet and water storage device (18) and the piston (16).
8. The reciprocating variable frequency deep submersible pump according to claim 1, wherein: an electric submersible pump outlet connector (19) is mounted at the top of the water outlet and storage device (18), and a coupling (20) is arranged on the outer side of one end, far away from the piston (16), of the electric submersible pump outlet connector (19).
9. A reciprocating variable frequency deep submersible pump according to claim 5 or 6, wherein: the inside wall of shell (21) is equipped with water pump cable (2), just water pump cable (2) with linear electric motor (15) intercommunication, piston (16) with be equipped with sand blocking plate (4) between the top of stator (5), water purification check valve (7) with constitute water purification cavity (12) between traveling valve (8).
10. The method for controlling a reciprocating variable frequency deep submersible pump according to any one of claims 1 to 9, comprising the steps of:
step 1: when the water level of the deep well water reaches a certain liquid level, the deep well water is detected by a liquid level meter (10) or a pressure switch (9), and a detection signal is output to an analog/digital converter;
step 2: transmitting the acquired and converted signals to a ground controller to start a linear motor (15) so that a stator (5) of the linear motor drives a rotor (6) to move upwards;
and step 3: when the stator (5) drives the rotor (6) to move upwards, the traveling valve (8) and the leakage-proof valve (1) are opened simultaneously, the water outlet check valve (3) and the water purification check valve (7) are closed simultaneously, so that the water after sand removal enters the inner side of the water channel (22), and meanwhile, the water is pumped into the sand remover (11) for sand removal treatment;
and 4, step 4: then enters the inner side of the water outlet and storage device (18) through the water channel (22);
and 5: sand is blocked by a sand blocking plate (4), and flow is guided by a flow guide plate;
step 6: closing the water outlet check valve (3) and pushing water inside the water outlet water storage device (18) into the inner side of an outlet connector (19) of the electric submersible pump;
and 7: the stator (5) drives the rotor (6) to move downwards, and meanwhile, the leakage-proof valve (1) and the traveling valve (8) are closed;
and 8: and performing 1-7 steps of cyclic work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121051.5A CN111255673A (en) | 2020-02-26 | 2020-02-26 | Reciprocating type variable-frequency deep submersible pump and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121051.5A CN111255673A (en) | 2020-02-26 | 2020-02-26 | Reciprocating type variable-frequency deep submersible pump and control method thereof |
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| CN111255673A true CN111255673A (en) | 2020-06-09 |
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| CN202010121051.5A Pending CN111255673A (en) | 2020-02-26 | 2020-02-26 | Reciprocating type variable-frequency deep submersible pump and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216538A (en) * | 2020-10-14 | 2021-01-12 | 陈海荣 | Special starting switch device and method for electric submersible pump for layered oil production |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2112872A (en) * | 1981-12-10 | 1983-07-27 | British Petroleum Co Plc | Pumping apparatus for installation in wells |
| CN2898362Y (en) * | 2005-12-20 | 2007-05-09 | 孙庆林 | Permanent electromagnetic cooker hood |
| CN2916190Y (en) * | 2006-06-15 | 2007-06-27 | 王胜青 | Multi-valve sand-prevention electro-submersible plunger pump |
| CN200943574Y (en) * | 2006-08-10 | 2007-09-05 | 纪雪冬 | Large power submersible linear permanent-magnet step motor plunger pump |
| CN201041141Y (en) * | 2007-04-02 | 2008-03-26 | 张建军 | Electric submersible bi-directional oil-pumping anti-sand pump |
| CN204532778U (en) * | 2015-04-15 | 2015-08-05 | 满灵子 | Linear electric motor are two up and down drives deep-well pump |
| CN106837766A (en) * | 2017-03-31 | 2017-06-13 | 陕钢集团汉中钢铁有限责任公司 | The control system of immersible pump start and stop can be controlled according to height of liquid level |
| CN212028027U (en) * | 2020-02-26 | 2020-11-27 | 江苏华扬液碳有限责任公司 | Reciprocating type frequency conversion deep submersible pump |
-
2020
- 2020-02-26 CN CN202010121051.5A patent/CN111255673A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2112872A (en) * | 1981-12-10 | 1983-07-27 | British Petroleum Co Plc | Pumping apparatus for installation in wells |
| CN2898362Y (en) * | 2005-12-20 | 2007-05-09 | 孙庆林 | Permanent electromagnetic cooker hood |
| CN2916190Y (en) * | 2006-06-15 | 2007-06-27 | 王胜青 | Multi-valve sand-prevention electro-submersible plunger pump |
| CN200943574Y (en) * | 2006-08-10 | 2007-09-05 | 纪雪冬 | Large power submersible linear permanent-magnet step motor plunger pump |
| CN201041141Y (en) * | 2007-04-02 | 2008-03-26 | 张建军 | Electric submersible bi-directional oil-pumping anti-sand pump |
| CN204532778U (en) * | 2015-04-15 | 2015-08-05 | 满灵子 | Linear electric motor are two up and down drives deep-well pump |
| CN106837766A (en) * | 2017-03-31 | 2017-06-13 | 陕钢集团汉中钢铁有限责任公司 | The control system of immersible pump start and stop can be controlled according to height of liquid level |
| CN212028027U (en) * | 2020-02-26 | 2020-11-27 | 江苏华扬液碳有限责任公司 | Reciprocating type frequency conversion deep submersible pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216538A (en) * | 2020-10-14 | 2021-01-12 | 陈海荣 | Special starting switch device and method for electric submersible pump for layered oil production |
| CN112216538B (en) * | 2020-10-14 | 2023-12-15 | 北京鹤川智能科技有限公司 | Special starting switch device and method for electric submersible pump for layered oil extraction |
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Application publication date: 20200609 |