CN2090443U

CN2090443U - Reversible turbine pump used in high falling head transfusion

Info

Publication number: CN2090443U
Application number: CN 91209402
Authority: CN
Inventors: 石行
Original assignee: Beijing Xicheng District Newly Opened General Test Plant
Current assignee: Beijing Xicheng District Newly Opened General Test Plant
Priority date: 1991-06-03
Filing date: 1991-06-03
Publication date: 1991-12-11

Abstract

The utility model discloses a reversible turbine pump used in high falling head transfusion, which is suitable for the liquid transportation in various long-distance high-volume pipes. The utility model comprising a motor and a transfer pump is characterized in that the motor is an excitation synchronous motor, and the transfer pump is a reversible turbine pump with angle-adjustable blades. The utility model also comprises an industrial control interface, a motor excitation, an adapting module for turbine pump blade angle control, a pressure measurement element, an adapting module of the pressure measurement element, and a common central control computer. In the working time, the central control computer collects each point pressure of the pipeline via the industrial control interface, controls the blade angle of each pump set and the motor excitation, and thus realizes the purpose of varying duty energy conservation.

Description

Reversible turbine pump used in high falling head transfusion

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 density of liquid 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 purpose of this utility model is that a kind of being applicable at high drop of invention changes the reversible turbine pump that uses in the transfer line.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 utility model 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 utility model 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 utility model, 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 utility model 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 utility model adopts the electromechanical integrated structure form, by adjusting to adjustable turbine pump blade angle and driving synchronous machinery excitation, can remain under the constant rotational speed and change lift of pump, work 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 line, 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 utility model, 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, I/OK32 INC.) 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. OPT22 company 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.