CN1068407A - Integrally-controlled long petroleum pipeline pumping plant - Google Patents

Abstract

A kind of long petroleum pipeline pumping plant of concentrated regulation and control, its oil transfer pump and other oil pumps completely are the single-stage pump of connecting of same model, and lift is between 100～300 meters.Pumping plant is by each sensing element and the reception element of the process control work station that universal process control software is housed by adaptation module control pumping plant in the interface case, and with digital microwave means of communication and console for centralized control formation computer local area network, Total tune, control is stopping/the fortune state of each pumping plant completely.Both having simplified pumping plant structure and pipeline configuration, and reduced investment outlay, and improved work efficiency again, and cut down the consumption of energy, is an oil field on-site producing devices with good economic benefit and technological progress.

Description

Integrally-controlled long petroleum pipeline pumping plant

The present invention relates to a kind of integrally-controlled long petroleum pipeline pumping plant, belong to oilfield exploitation produced on-site equipment technology field.

At present, when design middle and long distance oil transport pipeline, each pumping plant all is independent to consider to be provided with: be to be the unit with a pumping plant, each pumping plant is carried a stop spacing, promptly crude oil pump is delivered in the oil tank of next pumping plant by a pumping plant, by this pumping plant the crude oil pump in its jar is delivered to another pumping plant in downstream again, so repeatedly.Because all fronts distance, conventional art all are manual operations, oil transportation completely is difficult to accomplish synchronous operation.In recent years,, just carrying and progressively changing closed conveying crude oil into by above-mentioned relay in order to reduce the loss of crude oil, promptly by a last pumping plant to the next pumping plant without the oil tank storage and directly by pump to pump ground conveying crude oil.Owing to do not have oil tank as buffering,, just be difficult to guarantee that liquid steadily flows to average rate in the whole piece pipeline if the operation between each pumping plant and the pumping plant is asynchronous.In order to prevent water attack, will take very complicated anti-water attack technical measures.The control of speed-adjustable motor group is perhaps adopted in each pumping plant or the control of employing valve throttle, and therefore, conventional pumping plant design is very complicated.Generally speaking, setting up the long distance pipeline pumping plant is that investment is big, coordination control is difficult, energy consumption is high.During for example eastern yellow petroleum pipeline technical innovation, only seal process technology reform just expensive 2,000,000 dollars of the equipment of control section.And, because the coordination complexity of each several part has been done and just at long last various devices had been dropped into utilization one by one in 4 or five years always.Since technology-intensive, complex structure, and technical support from now on and management all will be very difficult.

The Flow-rate adjustment of pumping plant can be toward being to adopt the valve throttle technology, and energy consumption is big, and the entire equipment withstand voltage properties is required high.In recent years, pumping plant is taked to regulate the working condition that the pump speed technology is regulated each pumping plant, has become trend thereby reach energy-saving effect.But the driving source as the variable working condition oil pump is to regulate its rotating speed by variable-frequency power sources, and then adjusting oil transfer pump operating mode.The variable-frequency power sources complex structure, the investment in technological upgrading costliness aspect technical support and daily management safeguard, also exists and the identical problem of eastern yellow petroleum pipeline.

The purpose of this invention is to provide and a kind ofly change dispersion and be regulated to integrally-controlled long petroleum pipeline pumping plant separately, with many disadvantages and the disadvantage that overcomes prior art.

The present invention is based on contemporary electronic information technology, the monomer control of cancelling each pumping plant changes whole control into completely, promptly form an organic whole going up all pumping plants completely by information transmission, coordination, each pumping plant becomes joint of this integral body and coordinated operation.In other words, exactly oil transfer pumps all in all fronts all is cascaded,, makes whole pipeline be analogous to the multistage pump of director's axle by the regulation and control of information technology.With common multistage pump difference be that this length is much longer, even reach several hundred kilometers.But because the transport velocity of electronic information is 300,000 kilometer per seconds, the speed of coordinating control action is compared with fluid pressure ripple transfer rate (about 1 kilometer per second) completely, still far apart, therefore can think that whole pipeline is to accomplish simultaneously operating in real time completely, also promptly the pumping plant of all fronts can be treated as a multistage pump device.

Structural arrangements of the present invention as shown in Figure 1.№～№ 3 is for being numbered 1～3 pumping plant oil transfer pump 1 among the figure, and these oil transfer pumps should be the series connection single-stage pump of same model with other oil pumps are the same completely.Its lift rules are between 100 meters～300 meters, and kind should be no more than two kinds, to simplify coordinator.The 2nd, the drive motor of each oil pump should be selected numerical control full speed rare-earth synchronous motor for use, and this electric machine structure is simple, can realize under Digital Signals that from low speed to superfast full speed smooth running, energy consumption is low, and mechanical property is good.In order to guarantee the start-stop at any time of every pump, minor scale power net area in the load-carrying ability that do not withstand shocks, can between oil transfer pump and motor, install one additional and start variable-speed clutch, can guarantee that like this oil pump work can not produce big fluctuation to electrical network, makes the pipeline oil transportation safer.Each pumping plant all disposes corresponding sensor and reception device everywhere, P1, P2 as the expression pipeline oil pressure among the figure, T1, the T2 of oil temperature, pump oil flow Q, and each phase current IA, IB, IC and phase voltage VA-B, the VB-C of motor, VC-A etc., these responsive actuating devices all have the control adapter module of oneself, and these modules all assign in the industrial control unit (ICU) of 4 li in pumping plant interface interface case nearby, and are connected with nearby universal process control station 5 by interface case 4.Each pumping plant all should be equipped with the process control work station 5 that universal process control software is housed with a kind of model among the present invention.And the work station of each pumping plant is unified into a computer lan by microwave antenna 7 and modulator-demodulator (moderm) 6 with Control work station, center.The 3rd, oil transport pipeline.This figure has also shown № 1 and № 3 pumps in running, and № 2 pumps do not turn round, and these all coordinate each parameter of pipe network completely by console for centralized control, regulates and control by the digital microwave means of communication that the process control work station of each pumping plant oneself and interface interface thereof carry out.

Design philosophy of the present invention is considered the whole piece long distance oil pipeline as an integral device-major axis multistage pump, general arrangement with regard to needing each pumping plant, pipe characteristic, the defeated requirement of pipe etc. are made overall plans as a special equipment work like this, its design principle just includes: fail lifting lift and the range of flow that characteristic is tried to achieve each pumping plant by pipe, and with this selection ground as pump.And should select unified type completely, for trying to achieve the most economic operation expense, be advisable with the series connection single-stage pump, select the pump type that in the whole service scope, can both run up for use, every lift of pump is unsuitable too high, should between 100 meters～300 meters,, can select the pump of one or both lifts to form each pumping plant main equipment according to regulating needs completely.Determine that according to the hydraulic friction resistance between each pumping plant the lift of each pumping plant and the compound table number of pumps in series distribute.And the oil transfer pump of each pumping plant all is by the universal process Control work station administration of same type.The CS-1 type universal process Control work station that work station can select for use U.S. electromechanical integration company (Mechatronic equipment inc.) to produce, general process control software PARAGON is housed in this work station, manufacturer makes an optimized running strategy input service station to defeated special parameter of pipe and oil transportation pump curve, PARGON just can produce the control software of an optimized running automatically, and when moving completely, by by modulator-demodulator and microwave transmitting and receiving letter device, the computer network that digital microwave telecommunication net arrangements such as antenna constitute is controlled each pumping plant.The order conveying instruction that Control work station, center is long according to production scheduling, control completely pumping plant stop/change combination, that is to say, according to different pipe throughput rates, the software of central station can produce one automatically and determine the operating scheme that stops/transport state of each pump completely, and stops/transport the working state of system that assembled state has constituted whole flow circuit by each oil pump of all fronts.Oil transportation amount completely is not by single pumping plant control, but regulate by the permutation and combination that the variable working condition at random of the oil transfer pump in being distributed in is completely turned round.And come the whole pipe network of coordinated balance by the control centre of pipeline, synchronize them operation and prevent water attack.

According to structural design flow circuit of the present invention, regulate and control for single device or single pumping plant with regard to not needing, do not need speed change or flow control system, the additional facilities that does not also need anti-water attack, pumping plant structure and pipeline configuration are all greatly simplified, and make it to be equipped with the system carry out the transition to all by information technology management by conventional apparatus, the technology leap of having advanced can reduce more than 50% and invest.And owing to treat as a whole multistage pump equipment completely, each pumping plant is one of them link, global design, integrated operation, make system effectiveness completely can reach the same level of contemporary single-stage pump, promptly water efficient can reach 89%, and oily efficient is according to oil property slightly descend (generally descending 8～9%), with the Luning line is example, and actual total mechanical efficient completely was 42% in 90 years.In a word, compare, adopt design improvement pumping plant of the present invention with conventional method, little investment, energy consumption is fallen, advanced technology.

Claims (2)

1, a kind of integrally-controlled long petroleum pipeline pumping plant, include drive motor, oil transfer pump, oil transport pipeline and control apparatus, it is characterized in that: (1) oil transfer pump and other oil pumps completely are the single-stage pump of connecting of same model, its lift specification is between 100～300 meters, and kind should be no more than two kinds; (2) pumping plant is to regulate and control the sensing element group and the executive component group of pumping plant by the process control work station that universal process control software (PARAGON) is housed of same model by being installed in the adaptation module in the industrial control unit (ICU) in its interface interface case nearby; (3) pumping plant forms a computer lan by digital microwave telecommunication means and the Control work station, center that modulator-demodulator and microwave antenna constitute.

2, long petroleum pipeline pumping plant according to claim 1 is characterized in that can one of adjunction starting variable-speed clutch between oil transfer pump and drive motor.

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