CN1067486A

CN1067486A - A kind of reversible turbine pump that is used for high drop infusion

Info

Publication number: CN1067486A
Application number: CN 91103642
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: 1991-06-03
Filing date: 1991-06-03
Publication date: 1992-12-30

Abstract

A kind of reversible turbine pump that is used for high drop infusion is applicable to that the liquid in various long distances, large flow pipe road is carried.It has motor, transfer pump, it is characterized in that: motor is the excitation synchronous motor, transfer pump is the turbine pump of the reversible working of adjustable vane angle, industrial control interface is arranged, motor excitation, turbine pump leaf angle control adapter module, pressure measuring element and adaptation module thereof and central control computer that can be shared.During work, gather each point pressure in the pipeline by industrial control interface, the leaf angle and the motor excitation of each pump group are controlled, reach the variable working condition purpose of energy saving by central control computer.

Description

A kind of reversible turbine pump that is used for high drop infusion

A kind of reversible turbine pump that is used for high drop infusion, it belongs to liquid conveying machinery, is applicable to that the liquid in various long distances, large flow pipe road is carried.Be specially adapted at the interior discrepancy in elevation variation of transfusion distance environment greatly.

In present oil transportation, waterline, fed distance is long, and a series of conveying pumping plant all will be set midway.Because oil transportation, waterline are generally all assisted and be located at the face of land, the height variation with the fluctuating of landform makes before the slope and the pumping plant behind the slope bears the drop potential head that therefore causes.The additional potential head of the pumping plant that goes up a slope is added in the delivery side of pump place, thereby the upward slope pumping plant need strengthen the output lift, but the descending pumping plant then in contrast, and the potential head of natural drop is added in import, has increased effective output lift of pump, thereby has reduced the power consumption of pump.When drop equaled pipeline and distributes to the effective output lift of this pumping plant, the wasted work of pump just equalled zero.But very big at the some places drop, be higher than critical value, just run into some in this case and made us nerve-racking engineering problem, such as the liquid separation of flow, water attack or the like.For the influence of drop, though in pipeline designs, just consider because the variation of line transportation resistance and since temperature variation cause be transferred fluid density and viscosity change, all can cause the variation of each pump potential head.Therefore existing transfer pump working power is all bigger, leaves very big surplus capacity.

The objective of the invention is to invent a kind of being applicable to and change the reversible turbine pump that uses in the transfer line at high drop.It can control exerting oneself of each pump according to variation in pressure in the pipeline, even can absorb the drop potential energy power of carrying liquid, thereby reaches purpose of energy saving.

Composition of the present invention as shown in Figure 1, it has motor 2, transfer pump 1 is characterized in that: motor 2 is the excitation synchronous motor, and transfer pump 1 is the turbine pump of the reversible working of adjustable vane angle, industrial control interface 3 is arranged, motor excitation control adapter module 4, turbine pump leaf angle control adapter module 5, pressure measuring element 6, pressure measuring element adaptation module 7, and central control computer 8 that can be shared with other pump group, measurement and control system.

The present invention can use many reversible turbine pumps in use in long distance line, a shared central control computer 8.Industrial control interface 3(between each pumping plant is called for short RTU) connect by the standard serial working cable.In when work, central control computer 8 is measured the force value that the pressure measuring element 6 of difference in the line records by scanning method, controls the work of different turbine pumpes 1.Guarantee requiring the lift under the flow to change by the field current of regulating different pump leaf angles and synchronous motor.When negative lift when excessive (as pump inlet pressure), control by control of pump leaf angle and excitation, can make excitation synchronous motor loopback electric power, be in the generator shape.

In the present invention, the structure of turbine pump 1 can be as shown in Figure 2.It has pump case 9, input shaft 10, and working blade 11 is transferred leaf crank-connecting rod 12, transfers leaf slip ring 13, fork 14, ACTUATOR 15, supporting blades seat 16 and bearing of input shaft 17 are formed.The rotating shaft neck that each blade all passes through the blade lower end inserts in the bearing hole of supporting blades seat 16, thereby can make blade around self rotational, to change blade angle.The fixing leaf crank-connecting rod 12 of transferring in blade rotor neck lower end, and each transfers the connecting-rod head of leaf crank-connecting rod 12 all hinged with accent leaf slip ring 13 respectively, by mobile slip ring 13 diverse location on axle, drives and transfers leaf crank-connecting rod 12 mechanisms, crank is rotated, thereby also changed the setting angle of blade.Transfer the mobile of leaf slip ring 13 to finish, ACTUATOR 15 need not be rotated together with the axis by fork 14.ACTUATOR 15 is automatically controlled, can be (as with executive components such as stepper motors) of full electricity.For magna pump,, also can use automatically controlled oil hydraulic cylinder for obtaining bigger action moment.At this moment corresponding increase by one cover hydraulic power unit.

The present invention adopts central control computer 8 and this electromechanical integrated structure of RTU3, and is simple in structure, and is convenient to the expansion of device.As can by in RTU3, insert a plurality of pressure measuring element adaptation module and in pipeline the boost pressure measuring cell, realize multi-metering.By sealing in a plurality of RTU3 and corresponding turbine pump group, increase the conveying pumping plant number in the pipeline, and need not adjust whole system.

The present invention adopts the electromechanical integrated structure form, by to adjustable turbine pump blade angle and the adjusting that drives synchronous machinery excitation, can remain under the constant rotational speed and changes lift of pump, works so that pumping plant adapts in depth displacement changes big transfer line.For indivedual pumping plants, even can also make motor be in generating state, to electrical network loopback electric power by regulating the blade angle of turbine pump.Because each pump group variable working condition, make isostasy in the transfer pump pipeline, and do not use the throttling pressure regulation, and can reclaim a part of drop potential energy, so very high transfer efficiency is arranged, thereby reach purpose of energy saving.

In the present invention, industrial control interface 3, adaptation module 4,5 and 7, central control computer 8 and pressure measuring element 6 all are the commodity of standard.Can select U.S. ME company (MECHATRONIC EQUIPMENT, INC.) I/O K32 and CWS-1 for use as industrial control interface 3 and central control computer 8.Universal process control software PARGON is arranged in CWS-1.The user need only retouch control relation and control strategy and into be input to inner getting final product.And adaptation module 4,5 and 7 can be selected the DA3 and the AD3 of U.S. OPT 22 companies respectively for use, finishes the D/A switch and the mould/number conversion of standard.

Claims

1, a kind of reversible turbine pump that is used for high drop infusion, it has motor 2, transfer pump 1 is characterized in that: motor 2 is the excitation synchronous motor, and transfer pump 1 is the turbine pump of the reversible working of adjustable vane angle, industrial control interface 3 is arranged, motor excitation control adapter module 4, turbine pump leaf angle control adapter module 5, pressure measuring element 6, pressure measuring element adaptation module 7, and central control computer 8 that can be shared with other pump group, measurement and control system.