CN1079026A

CN1079026A - Digit control hydraulic meter high molecular pump

Info

Publication number: CN1079026A
Application number: CN 92103761
Authority: CN
Inventors: 石行
Original assignee: Xicheng Xinkai General Testing Factory Beijing City
Current assignee: Xicheng Xinkai General Testing Factory Beijing City
Priority date: 1992-05-21
Filing date: 1992-05-21
Publication date: 1993-12-01

Abstract

A kind of digit control hydraulic meter high molecular pump, be by fully numerical-controlled electric towing and gear pump, the novel electromechanical integration apparatus that integrates metering, monitoring, pump liquid function that hydraulic units such as two high pressure liquid moveable cylinders, iron core rubber piston, Highpressure Tee valve, magnetosensitive displacement stroke sensor constitute.By the transmission of pumping power fluid, make in the high pressure water injection allocation oil field stratum that contains high molecular polymer.Novel structure, simple, stable working is reliable, makes polymer remain laminar condition in runner, its molecular chain is not damaged, less energy consumption is a kind of more satisfactory oilfield water injection equipment.

Description

Digit control hydraulic meter high molecular pump

The present invention relates to a kind of water pump that is used for the injection allocation high molecular polymer of oil field flood pattern, belong to petroleum production water supply equipment technical field.

Many oil fields of China need be in recover petroleum, and water filling in the past stratum is to keep the constant or constant substantially of stratum internal pressure.In order to improve the oil-field flooding effect, in water filling, also add the injection allocation high molecular polymer now, just quantitative according to a certain percentage some high molecular polymer of injection allocation in the high pressure water injection system., need control, to guarantee the injection allocation ratio the flow of high molecular polymer for this reason; Simultaneously provide conveying capacity to it again.Because the molecular chain of high molecular polymer is very easy to be cut off, if use common high-pressure metering pump, reason owing to configuration aspects, the liquid that is mixed with high molecular polymer can not remain laminar condition and flow in runner, therefore, the molecular chain of polymer is cut off, influences the injection allocation effect, and the flow measurement during injection allocation also needs special metering equipment just can finish.Promptly need two equipment just can finish above-mentioned work, control is complicated, and energy consumption is big, and also effect is as one wishes not to the utmost.

The purpose of this invention is to provide a kind of collect metering and carry be the macromolecule match injection pump of one, use digital controlly, in the electromechanical integration control system, be used for oil-field flooding.

Structure of the present invention is formed as shown in Figure 1: it is made of the numeral-control electric hauling device and the pressurized injection allocation device two-part that surge, the former is by a numerical control rare-earth permanent-magnet electric machine 1A driving gear pump 2 by variable ratio frequency changer power supply 1B control, and be loaded on the cylinder barrel 3 that surges, two magnetosensitive displacement transducers 9 at 4 places, 10 and control Highpressure Tee valve 7A, the numerical control final controlling element 8 of 7B action constitutes, the latter has two high pressure liquid moveable cylinders made from seamless steel pipe 3,4, an iron core rubber piston 5 is housed respectively in two cylinder barrels, 6 cylinder bodies are separated into two parts, its underpart is a glycerine 11, constitute path with gear pump 2, top is the high pressure water 12 of injection allocation high molecular polymer, by two Highpressure Tee valve 7A, 7B with advance,

outlet

13,14 alternately constitute path, sensor 9,10 and numerical control final controlling element 8, the adaptation module of variable ratio frequency changer power supply 1B all is inserted in the slot in the standard industrial control 1C, interface interface 1C by the standard serial communication interface with can link to each other with the shared central control computer 1D of other measuring and controlling equipments.

The present invention adopts contemporary high-tech art achievement, with the driving power of numerical control electric drive system as this device, simultaneously, metering, the liquid of traditional high-pressure metering pump are flowed functions such as commutation, mechanical transmission, all change into electronic information technology and handling by original mechanical means, so just can just constitute a kind of novel equipment that surges that integrates metering, monitoring, three kinds of functions of pump liquid with a small amount of simple mechanical part.

Working principle of the present invention is as follows:

By numerical control rare-earth permanent-magnet electric machine 1A, variable ratio frequency changer inverter 1B, what standard industrial interface interface 1C and control computer 1D constituted is a kind of fully numerical-controlled electric towing (patent applied for, number of patent application: 92100001.4), it is to utilize the strategy of control computer 1D according to program setting, send control command in real time at random, make variable ratio frequency changer inverter 1B become frequency to industrial-frequency alternating current by interface interface 1C from the power supply network feed-in, the Ac output that phase place is all variable, it not only can controlled change output current frequency and phase relationship, size that can also controlled change output current.And the numerical control rare-earth permanent-magnet electric machine is that a kind of speed range is very wide, the synchronous machine of mechanical property ultrahard, above-mentioned fully numerical-controlled electric towing can all be carried out STOCHASTIC CONTROL to rotating speed of motor, acceleration, direction, moment of torsion, stroke in real time, in fact just the output state of dressing up the gear pump 2 of one with motor 1A is carried out in real time at random quantitative output control.The glycerine (or other have the power fluid of identical functions) that is full of in two Lower Half cylinder bodies that are separated by iron core rubber piston 5,6 in the import and export of gear pump 2 and the high pressure liquid moveable cylinder 3,4 constitutes path, and the rotating speed of gear pump 2 can be from 0 to carrying out forward and reverse rotation the maximum (top) speed.When pump 2 is rotated in the forward, (as shown in drawings) with power fluid glycerine from cylinder barrel 3 pumps to cylinder barrel 4, piston 5 is descending, piston 6 is up, simultaneously under the control of numerical control final controlling element 8, the Highpressure Tee valve 7A that runner is level and smooth makes the water that contains high molecular polymer suck and guiding cylinder barrel 3 from import 13, three-way valve 7B then make 4 li of cylinder barrels be subjected to the piston roof pressure and the high pressure water that contains high molecular polymer that obtains conveying capacity with export 14 and be communicated with, by injection allocation in oil field stratum.At this moment, cylinder barrel 3 is in the feed liquor state, and cylinder barrel 4 is in the discharge opeing state.When the position of piston 5 descending arrival magnetosensitive displacement stroke sensors 10, the adaptation module of sensor 10 is sent signal by interface interface 1C to control computer 1D, under the unified instruction of computer 1D, and 8 actions of numerical control final controlling element, make three-way valve 7A, 7B displacement position, pump 2 counterrotatings.Like this, said process is reversed and carries out, and promptly cylinder barrel 4 is in the feed liquor state, and cylinder barrel 3 is in the discharge opeing state.Hocket in this way and just constitute a work cycle.

Owing to be that transmission by power fluid makes the high pressure water that contains high molecular polymer obtain conveying capacity, can make high molecular polymer in runner, remain laminar condition, and guarantee that polymer molecular chain does not go to pot, and flow process is simple, and mechanical structure is also simple, and stable working is reliable, electromechanical integration control is carried out in the whole operation operation, do not need personal management, maintenance, its energy consumption is also much lower than traditional metering pump, can be energy-conservation in a large number.Numerical control device is by being provided with the rotating speed of gear pump 2, and the purpose that can reach control and measure its flow by the conversion and the integration of computer, just can calculate the high pressure water total amount that contains high molecular polymer of being discharged again.And computer is shared with other measuring and controlling equipments, can insert other adaptation module in its standard industry interface interface, and other parameters are measured or controlled, and constitutes the electromechanical integration TT﹠C system of an oil mining operation.The present invention also can be used for other work of similar applications in the chemical system.

Claims

1, a kind of digit control hydraulic meter high molecular pump, it is characterized in that: it is made of the numeral-control electric hauling device and the pressurized injection allocation device two-part that surge, the former is by a numerical control rare-earth permanent-magnet electric machine 1A driving gear pump 2 by variable ratio frequency changer power supply 1B control, and be loaded on the cylinder barrel 3 that surges, two magnetosensitive displacement transducers 9 at 4 places, 10 and control Highpressure Tee valve 7A, the numerical control final controlling element 8 of 7B action constitutes, the latter has two high pressure liquid moveable cylinders made from seamless steel pipe 3,4, an iron core rubber piston 5 is housed respectively in two cylinder barrels, 6 cylinder bodies are separated into two parts, its underpart is a glycerine 11, constitute path with gear pump 2, top is the high pressure water 12 of injection allocation high molecular polymer, by two Highpressure Tee valve 7A, 7B with advance, outlet 13,14 alternately constitute path, sensor 9,10 and numerical control final controlling element 8, the adaptation module of variable ratio frequency changer power supply 1B all is inserted in the slot in the standard industrial control 1C, interface interface 1C by the standard serial communication interface with can link to each other with the shared central control computer 1D of other measuring and controlling equipments.