CN106762617A - Screw pump flow feedback governing system - Google Patents
Screw pump flow feedback governing system Download PDFInfo
- Publication number
- CN106762617A CN106762617A CN201710205456.5A CN201710205456A CN106762617A CN 106762617 A CN106762617 A CN 106762617A CN 201710205456 A CN201710205456 A CN 201710205456A CN 106762617 A CN106762617 A CN 106762617A
- Authority
- CN
- China
- Prior art keywords
- controller
- flow
- screw pump
- buncher
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
Abstract
The invention discloses screw pump flow feedback governing system, including screw pump buncher, also including the controller being connected with buncher, outlet flow sensor and warning device are also associated with the controller；Buncher is actuator in the present system, outlet flow sensor is sensor, controller constitutes a closed-loop control system for controller, purpose is the flow by controlling the rotating speed of buncher to control screw pump, when solution carries out suction liquid using screw pump, sometimes because the change of liquid viscosity causes the flow of screw pump fluctuation, unworkable problem when regime flow is needed occur.It is an advantage of the invention that：The stabilization of screw rod POF is ensure that using feedback control system；With multinomial self-checking function, stability is high.
Description
Technical field
The present invention relates to a kind of screw-pump control system, and in particular to screw pump flow feedback governing system.
Background technology
Screw pump is to engage spatial volume change and movement to convey liquid or be allowed to by what the pump housing and screw rod were formed
The drum pump of supercharging.Screw pump is divided into single-screw (single screw) pump, Quimby pump and three screw pump etc. by screw rod number.When driving screw rod is rotated
When, the driven screw that drive is engaged is rotated together, and the screw rod engagement spatial volume of suction chamber one end gradually increases, pressure drop
It is low.Liquid enters engagement spatial volume under differential pressure action.When volume increases to maximum and forms an annular seal space, liquid just exists
One by one continuously along axial movement in annular seal space, until discharge chamber one end.At this moment the screw rod engagement space of discharge chamber one end holds
Product is gradually reduced, and liquid is discharged.The operation principle of screw pump is similar to gear pump, simply be instead of with screw rod in structure
Gear.The characteristics of table is various screw pumps and range of application.The flow and pressure pulse very little of screw pump, noise and vibration are small,
There is suction capacity, but screw rod processing is more difficult.Pump has two kinds of structures of single-suction and double-suction type, but single-screw (single screw) pump only has single-suction.
Pump must wear safety valve, to prevent from being damaged as discharge blockage makes the outlet pressure of pump exceed feasible value for some reason
Pump or prime mover.
When carrying out suction liquid using screw pump, sometimes because the change of liquid viscosity causes the flow of screw pump to go out
Now fluctuate, be difficult with when regime flow is needed.
The content of the invention
The technical problems to be solved by the invention are when carrying out suction liquid using screw pump, sometimes because liquid is sticky
The change of degree causes the flow of screw pump fluctuation occur, is difficult with when regime flow is needed, it is therefore intended that provide spiral shell
Bar pump discharge feeds back governing system, solves the problems, such as to control screw pump stability of flow.
The present invention is achieved through the following technical solutions：
Screw pump flow feedback governing system, including screw pump buncher, the also control including being connected with buncher
Device processed, is also associated with outlet flow sensor and warning device on the controller；
Buncher：The control signal that controller sends is received, is operated according to control signal；
Controller：The flow signal that outlet flow sensor sends is received, control signal is generated according to flow signal, by life
Into control signal be sent to buncher；Alarm signal to warning device is sent in system exception.
Outlet flow sensor：The flow velocity of screw rod pump discharge liquid is detected, control is sent to using flow velocity as flow signal
Device；
Warning device：The alarm signal for receiving controller transmission carries out alert operation.Buncher is to hold in the present system
Row device, outlet flow sensor is sensor, and controller constitutes a closed-loop control system for controller, it is therefore intended that pass through
The rotating speed of buncher is controlled to control the flow of screw pump.
Database and tachometer are also associated with the controller, the tachometer is connected on buncher.In data
The matching range of flow rate of liquid and rotating speed, when the data for detecting are not in the range of this, controller identification system are recorded in storehouse
System is abnormal, sends alarm signal to warning device.
Inlet flow rate sensor is also associated with the controller.Controller compares the data of inlet flow rate sensor and goes out
The data of mouth flow sensor, are probably then that the screw pump pump housing occurs in that damage when relatively big difference occur in this two groups of data, control
Device processed sends alarm signal to warning device.
Pressure sensor is also associated with the controller, the pressure sensor is connected with warning device.When speed governing electricity
When machine increases rotating speed, the pressure value in screw pump can increase, the pressure in pressure sensor detection screw pump, when pressure limit
Reduce-speed sign is sent to controller.
The present invention compared with prior art, has the following advantages and advantages：
1st, screw pump flow feedback governing system of the present invention, screw rod POF is ensure that using feedback control system
Stabilization；
2nd, screw pump flow feedback governing system of the present invention, with multinomial self-checking function, stability is high.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is present system structural representation.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
It is limitation of the invention.
Embodiment
As shown in figure 1, screw pump flow feedback governing system of the present invention, including screw pump buncher, also including with
The controller of buncher connection, is also associated with outlet flow sensor and warning device on the controller；The controller
Using NXP S12X, outlet flow sensor uses FMG-70, warning device to use audible-visual annunciator.Speed governing is electric in the present system
Machine is actuator, and outlet flow sensor is sensor, and controller constitutes a closed-loop control system for controller, and purpose exists
In the flow by controlling the rotating speed of buncher to control screw pump.SD card database is also associated with the controller and is turned
Speed meter HHT30R, the tachometer is connected on buncher.The matching range of flow rate of liquid and rotating speed is recorded in database,
When the data for detecting are not in the range of this, controller assert system exception, sends alarm signal to warning device.It is described
Inlet flow rate sensor FMG-70 is also associated with controller.Controller compares the data and rate of discharge of inlet flow rate sensor
The data of sensor, are probably then that the screw pump pump housing occurs in that damage when relatively big difference occur in this two groups of data, controller to
Warning device sends alarm signal.Pressure sensor PX51, the pressure sensor and alarm are also associated with the controller
Device is connected.When buncher increases rotating speed, the pressure value in screw pump can increase, in pressure sensor detection screw pump
Pressure, reduce-speed sign is sent when pressure limit to controller.
Buncher：The control signal that controller sends is received, is operated according to control signal；
Controller：The flow signal that outlet flow sensor sends is received, control signal is generated according to flow signal, by life
Into control signal be sent to buncher；Alarm signal to warning device is sent in system exception.
Outlet flow sensor：The flow velocity of screw rod pump discharge liquid is detected, control is sent to using flow velocity as flow signal
Device；
Warning device：The alarm signal for receiving controller transmission carries out alert operation.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (4)
1. the buncher of screw pump flow feedback governing system, including screw pump, it is characterised in that also including with buncher
The controller of connection, is also associated with outlet flow sensor and warning device on the controller；
Buncher：The control signal that controller sends is received, is operated according to control signal；
Controller：The flow signal that outlet flow sensor sends is received, control signal is generated according to flow signal, by what is generated
Control signal is sent to buncher；Alarm signal to warning device is sent in system exception.
Outlet flow sensor：The flow velocity of screw rod pump discharge liquid is detected, controller is sent to using flow velocity as flow signal；
Warning device：The alarm signal for receiving controller transmission carries out alert operation.
2. screw pump flow feedback governing system according to claim 1, it is characterised in that be also connected with the controller
There are database and tachometer, the tachometer is connected on buncher.
3. screw pump flow feedback governing system according to claim 1, it is characterised in that be also connected with the controller
There is inlet flow rate sensor.
4. screw pump flow feedback governing system according to claim 1, it is characterised in that be also connected with the controller
There is pressure sensor, the pressure sensor is connected with warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205456.5A CN106762617A (en) | 2017-03-31 | 2017-03-31 | Screw pump flow feedback governing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205456.5A CN106762617A (en) | 2017-03-31 | 2017-03-31 | Screw pump flow feedback governing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762617A true CN106762617A (en) | 2017-05-31 |
Family
ID=58965528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710205456.5A Pending CN106762617A (en) | 2017-03-31 | 2017-03-31 | Screw pump flow feedback governing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762617A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930429A (en) * | 2017-12-18 | 2018-04-20 | 深圳市欣音达科技有限公司 | A kind of metering mixing system |
| CN107977062A (en) * | 2017-11-30 | 2018-05-01 | 英业达科技有限公司 | immersion cooling system verification method |
| CN108253178A (en) * | 2018-01-11 | 2018-07-06 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of multifunctional motor-driven actuator system |
| TWI635250B (en) * | 2017-12-05 | 2018-09-11 | 英業達股份有限公司 | Verifying method for immersion cooling system |
| CN113494279A (en) * | 2021-07-26 | 2021-10-12 | 长江大学 | Oil pumping device matched with composite continuous oil pipe and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125736U (en) * | 1992-05-09 | 1992-12-23 | 沈太福 | Flow adjustable screw pump |
| JPH10329200A (en) * | 1997-05-29 | 1998-12-15 | Toshiba Mach Co Ltd | Method and apparatus for controlling composite extrusion molding machine |
| CN202023738U (en) * | 2011-05-06 | 2011-11-02 | 沈阳工业大学 | Rotating speed intelligent control system for oil-immersed screw pump |
| CN202851342U (en) * | 2012-08-28 | 2013-04-03 | 浙江工业大学 | Screw pump control device |
-
2017
- 2017-03-31 CN CN201710205456.5A patent/CN106762617A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125736U (en) * | 1992-05-09 | 1992-12-23 | 沈太福 | Flow adjustable screw pump |
| JPH10329200A (en) * | 1997-05-29 | 1998-12-15 | Toshiba Mach Co Ltd | Method and apparatus for controlling composite extrusion molding machine |
| CN202023738U (en) * | 2011-05-06 | 2011-11-02 | 沈阳工业大学 | Rotating speed intelligent control system for oil-immersed screw pump |
| CN202851342U (en) * | 2012-08-28 | 2013-04-03 | 浙江工业大学 | Screw pump control device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107977062A (en) * | 2017-11-30 | 2018-05-01 | 英业达科技有限公司 | immersion cooling system verification method |
| CN107977062B (en) * | 2017-11-30 | 2021-05-11 | 英业达科技有限公司 | Immersion cooling system verification method |
| TWI635250B (en) * | 2017-12-05 | 2018-09-11 | 英業達股份有限公司 | Verifying method for immersion cooling system |
| CN107930429A (en) * | 2017-12-18 | 2018-04-20 | 深圳市欣音达科技有限公司 | A kind of metering mixing system |
| CN108253178A (en) * | 2018-01-11 | 2018-07-06 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of multifunctional motor-driven actuator system |
| CN113494279A (en) * | 2021-07-26 | 2021-10-12 | 长江大学 | Oil pumping device matched with composite continuous oil pipe and control method thereof |
| CN113494279B (en) * | 2021-07-26 | 2023-04-14 | 长江大学 | Oil pumping device matched with composite continuous oil pipe and control method thereof |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170531 |