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WO2020088012A1 - 双腔液体往复驱动多相流混输方法及其装置 - Google Patents

双腔液体往复驱动多相流混输方法及其装置 Download PDF

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Publication number
WO2020088012A1
WO2020088012A1 PCT/CN2019/098320 CN2019098320W WO2020088012A1 WO 2020088012 A1 WO2020088012 A1 WO 2020088012A1 CN 2019098320 W CN2019098320 W CN 2019098320W WO 2020088012 A1 WO2020088012 A1 WO 2020088012A1
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tank
liquid
outlet
inlet
solenoid valve
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French (fr)
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官天日
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Priority to US17/289,876 priority Critical patent/US11454351B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/14—Conveying liquids or viscous products by pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/03—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another

Definitions

  • the invention belongs to the field of oil and gas mixed transportation and pressurized transportation devices for natural gas wells in oilfield production, and particularly relates to a mixed transportation method and device in a mixed state of liquid, gas or liquid and gas multiphase flow.
  • the crude oil output is mainly a mixture of oil, water and gas, and also contains a small amount of sediment, which is a multi-phase mixture.
  • the traditional process of oil and gas production and transportation in oil fields is to separate oil, gas and water first, and then use oil pump, water pump and compressor to deliver separately.
  • There are shortcomings such as complicated process flow, large investment and difficult operation and maintenance.
  • Multiphase flow mixing and transportation technology is an efficient and economical pumping technology developed in recent years, and is the development trend of oilfield production and transportation technology at home and abroad. It uses a multiphase flow mixed delivery pump to replace the infusion pump and gas compressor, and simultaneously transport oil, gas, and water containing sand particles through a pipeline.
  • Multi-phase flow mixing pump is a kind of equipment specially used to transport crude oil mixture. Compared with the separation method, he does not need to set up special separation equipment, which saves a pipeline process, and is especially suitable for long-distance transportation of crude oil mixture.
  • China is still in the initial research stage in the development of multi-phase flow mixing pump products.
  • the phase flow mixing pump mainly relies on imports and consumes a lot of foreign exchange funds. Therefore, the research and development of multiphase flow mixing pumps are of great significance to China's oil development.
  • the oil, gas, and water in the multiphase flow are not mixed uniformly. Under high water content, the water will take away the lubricant between the friction components in the pump cavity, such as the rotor and the side plate, the screw and the screw sleeve, and the rotor bearing. , Due to the lack of lubricating oil to increase wear and tear, resulting in short-term sinter damage.
  • the biggest sealing problem of the multiphase flow mixed transmission pump is that the shaft end and the shaft in the pump cavity are dynamically sealed. It faces a multiphase sealing problem. Not only the sealing under pure liquid or pure gas conditions, but also the sealing problems under high-speed and variable-speed conditions.
  • the sealing problem of the multiphase flow mixing pump is an important issue for the design and research of multiphase flow mixing pump at home and abroad.
  • the load and speed of the mechanical rotary multi-phase pump will change with the change of the medium flow state, and the high-speed rotating rotor intensifies the separation of gas and liquid, resulting in greater load changes, resulting in severe vibration and displacement of the transmission shaft. It even broke.
  • the purpose of the present invention is to provide a dual-chamber liquid reciprocating multi-phase flow mixing and transporting method and device for driving a pump that always works in pure liquid working conditions in order to realize the liquid, gas or liquid, gas mixed delivery .
  • the principle of the present invention is as follows: the power pump drives the liquid in the left tank and the right tank to reciprocate, so that the left tank and the right tank alternately form a vacuum suction chamber and a compression discharge chamber at the inlet and outlet ends of the power pump to realize the liquid, gas or liquid, Continuous delivery of gas mixture; the liquid level gauge transmits the liquid level signals of the left and right tanks to the data acquisition and control system; the data acquisition and control system controls the solenoid valve group or the electromagnetic directional valve according to the change of the liquid level of the left and right tanks The opening and closing of the valve automatically switch the flow direction of the power pump inlet and outlet; the inlet one-way valve and outlet one-way valve on the left and right tanks are controlled by the pressure in the left and right tanks, and automatically open and close to realize the conveyed medium Continuous suction and discharge.
  • the present invention provides a technical solution for a dual-chamber liquid reciprocating multiphase flow mixing and transporting device, which includes two forms of solenoid valve group reversing and electromagnetic valve reversing, specifically as follows:
  • left tank right tank, power pump, data acquisition control system, solenoid valve group, one-way valve group, and inlet and outlet manifold; among them:
  • the upper part of the left tank and the right tank are provided with a medium inlet and a medium outlet, and the medium inlet is connected to the inlet manifold through an inlet check valve, and the medium outlet is connected to the inlet through the outlet check valve Export header connection;
  • Circulating liquid inlets are provided on the upper part of the side walls of the left and right tanks, and circulating liquid outlets are provided on the lower part, and an inlet electromagnetic valve is connected to the circulating liquid inlet, and an outlet electromagnetic is connected to the circulating liquid outlet Valve;
  • the inlet line of the power pump is provided with branches to connect with the outlet solenoid valves of the left and right tanks respectively, and the outlet line of the power pump is provided with branches to the inlet solenoid valves of the left and right tanks, respectively connection;
  • Liquid level gauges are installed on the left and right tanks, and the liquid level gauges are respectively connected to the data acquisition control system through data lines; the data acquisition control system is connected to the inlet solenoid valve through control lines, respectively 3. Connection of outlet solenoid valve.
  • left tank right tank, power pump, data acquisition control system, electromagnetic directional valve, one-way valve group, and inlet and outlet manifold; among them:
  • the upper part of the left tank and the right tank are provided with a medium inlet and a medium outlet, and the medium inlet is connected to the inlet manifold through an inlet check valve, and the medium outlet is connected to the inlet through the outlet check valve Export header connection;
  • Each side wall of the left tank and the right tank is provided with a circulation liquid inlet and outlet, and the power pump is respectively connected to the circulation liquid inlet and outlet of the left tank and the right tank through the same electromagnetic directional valve;
  • Liquid level gauges are installed on the left and right tanks, and the liquid level gauges are respectively connected to the data acquisition control system through data lines; the data acquisition control system is connected to the electromagnetic directional valve through control lines connection.
  • the circulation liquid inlet and outlet of the left and right tanks are respectively connected to the A and B ports of the electromagnetic reversing valve, and the inlet and outlet of the power pump are respectively connected to the The T port and P port of the electromagnetic directional valve are connected.
  • solenoid valve group reversing there are two ways of solenoid valve group reversing and solenoid valve reversing:
  • Sewage outlets are provided at the bottom of the left and right tanks, and a sewage valve is installed on the sewage outlets.
  • the sensing ends of the liquid level gauge are respectively connected to the liquid level detection ports in the lower parts of the left and right tanks, and the venting ends are respectively connected to the medium outlets in the upper parts of the left and right tanks.
  • the method also includes two forms of solenoid valve group reversing and electromagnetic valve reversing, as follows:
  • the method of the dual-chamber liquid reciprocating drive multi-phase flow mixing and conveying device for the commutation of the solenoid valve group to convey the liquid and gas mixed medium includes the following steps:
  • the liquid level gauge transmits the liquid level signal to the data acquisition control system, and the data acquisition control system issues a control command according to the liquid level signal: closed
  • the inlet solenoid valve on the left tank and the outlet solenoid valve on the right tank simultaneously open the outlet solenoid valve on the left tank and the inlet solenoid valve on the right tank;
  • the liquid level gauge transmits the liquid level signal to the data collection and control system, and the data collection and control system issues a control command according to the liquid level signal: turn off the left
  • the outlet solenoid valve on the tank and the inlet solenoid valve on the right tank simultaneously open the inlet solenoid valve on the left tank and the outlet solenoid valve on the right tank;
  • the liquid level gauge transmits the liquid level signal to the data acquisition and control system.
  • the data acquisition and control system issues a control command according to the liquid level signal: close The inlet solenoid valve on the left tank and the outlet solenoid valve on the right tank simultaneously open the outlet solenoid valve on the left tank and the inlet solenoid valve on the right tank;
  • the dual-chamber liquid reciprocating drive multiphase flow mixing and conveying device of the electromagnetic directional valve reversing method conveys the liquid and gas mixed medium.
  • the steps are the same as the way of the electromagnetic valve group reversal. Only the electromagnetic directional valve is used to replace the The inlet solenoid valve and the outlet solenoid valve realize the function of switching the inlet and outlet flow direction of the power pump.
  • the method for the dual-chamber liquid reciprocating drive multiphase flow mixing and conveying device of the solenoid valve group to transfer the gas medium includes the following steps:
  • the liquid level gauge transmits the liquid level signal to the data acquisition and control system.
  • the data acquisition and control system sends out control commands according to the liquid level signal: close the inlet solenoid valve on the left tank and the outlet solenoid valve on the right tank, and open the left The outlet solenoid valve on the tank and the inlet solenoid valve on the right tank;
  • the dual-chamber liquid reciprocating drive multiphase flow mixing and conveying device of the electromagnetic directional valve reversing method conveys the gas medium.
  • the steps are the same as the way of the solenoid valve group reversal. Only the electromagnetic directional valve is used to replace the inlet solenoid valve. 1.
  • the outlet solenoid valve realizes the function of switching the inlet and outlet flow direction of the power pump.
  • the present invention has the following advantages:
  • the vacuum suction chamber and compression discharge chamber formed alternately by the two tanks are used as the suction chamber and discharge chamber of the multiphase flow mixing pump. After the gas in the liquid-gas mixture is separated in the tank, it is compressed and discharged out of the tank by the liquid.
  • the power pump always works in pure liquid conditions, eliminating the problem of high gas content on the pump. Using ordinary water pumps can achieve mixed delivery of multi-phase flow, and can even be used as a pure gas vacuum pump and compressor for continuous operation. In the field of phase flow mixed transmission technology, new technical methods and research and development directions are provided.
  • the drive pump is always working in pure liquid working condition, and the ordinary mechanical seal can be used to solve the multi-phase sealing problem of the multi-phase flow mixed transmission pump.
  • the driving pump always works in pure liquid condition, and there is no load change caused by the change of medium flow state.
  • FIG. 1 is a schematic structural diagram of a dual-chamber liquid reciprocating multiphase flow mixing and transporting device in Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural view of a dual-chamber liquid reciprocating multiphase flow mixing and transporting device in Embodiment 2 of the present invention
  • a double-chamber liquid reciprocating multiphase flow mixing and transporting device includes a left tank 1, a right tank 2, a power pump 3, a data acquisition control system 4, a solenoid valve group, a one-way valve group, and an inlet manifold 5 3.
  • Export manifold 6 ; of which:
  • the upper part of the left tank 1 and the right tank 2 are provided with a medium inlet and a medium outlet, namely a first medium inlet 1-3, a second medium inlet 2-3, a first medium outlet 1-4, a second medium outlet 2-4 ;
  • the first medium inlet 1-3, the second medium inlet 2-3 are connected to the inlet manifold 5 through the first inlet check valve 1-9, the second inlet check valve 2-9; the first medium outlet 1- 4.
  • the second medium outlet 2-4 is connected to the outlet manifold 6 through the first outlet check valve 1-10 and the second outlet check valve 2-10, respectively.
  • the upper part of the side walls of the left tank 1 and the right tank 2 are all provided with a circulating liquid inlet and a lower part are provided with a circulating liquid outlet, namely a first circulating liquid inlet 1-1, a second circulating liquid inlet 2-1, and a first circulating liquid Outlet 1-2, second circulating liquid outlet 2-2;
  • first circulating liquid inlet 1-1 is connected with a first inlet solenoid valve 1-7
  • the first circulating liquid outlet 1-2 is connected with a first outlet solenoid valve 1-8
  • a second inlet solenoid valve 2-7 is connected to the second circulating liquid inlet 2-1
  • a second outlet solenoid valve 2-8 is connected to the second circulating liquid outlet 2-2.
  • the inlet line of the power pump 3 is provided with branches connected to the first outlet solenoid valve 1-8 and the second outlet solenoid valve 2-8 of the left tank 1 and the right tank 2, respectively, and the outlet line of the power pump 3 is provided with branches and left The first inlet solenoid valve 1-7 and the second inlet solenoid valve 2-7 of the tank 1 and the right tank 2 are connected.
  • the first tank level gauge 1-12 and the second tank level gauge 2-12 are installed on the left tank and the right tank respectively, and the first tank level gauge 1-12 and the second tank level gauge 2-12 pass through two data lines Connected to the data acquisition control system 4 respectively; the data acquisition control system is connected to the first inlet solenoid valve 1-7, the second inlet solenoid valve 2-7, the first outlet solenoid valve 1-8 and the second outlet through four control lines Solenoid valves 2-8 are connected. That is, the data acquisition control system controls the opening and closing of each solenoid valve through four control lines.
  • the above-mentioned double-chamber liquid reciprocating multiphase flow mixing and transporting device includes two working states, namely, a liquid and gas mixed medium multiphase flow mixing and transporting state and a pure gas delivery state.
  • the working processes are as follows:
  • Liquid and gas mixed medium multiphase flow mixed transmission state (mixed pump function)::
  • the inlet manifold 5 and the outlet manifold 6 of the multi-chamber liquid multi-phase flow mixing and reciprocating device are installed in series on the fluid mixing pipeline, and the liquid and gas mixed media pass through the inlet manifold 5 and the inlet is unidirectional Valves (first inlet check valve 1-9, second inlet check valve 2-9), medium inlet (first medium inlet 1-3, second medium inlet 2-3), flow into the left tank 1, right Inside the tank 2.
  • the gas in the left tank 1 and the right tank 2 passes through the medium outlet (first medium outlet 1-4, second medium outlet 2-4), outlet check valve (first outlet check valve 1-10, second outlet single Discharge to valve 2-10) and outlet manifold 6.
  • the first liquid level gauge 1-12 and the second liquid level gauge 2-12 transmit the liquid level signal to the data acquisition control system 4.
  • the data acquisition control system 4 sends out control commands according to the liquid level signal: the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 solenoid valve opens, the first inlet solenoid valve 1-7, the second outlet solenoid Valve 2-8 solenoid valve is closed, starting power pump 3.
  • the liquid in the left tank 1 passes through the first circulating liquid outlet 1-2, the first outlet solenoid valve 1-8, the power pump 3, the second inlet solenoid valve 2-7, the second circulation
  • the liquid inlet 2-1 is discharged into the right tank 2.
  • the dual-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, which is in a state where the left tank 1 is sucked in and the right tank 2 is discharged.
  • the liquid level in the left tank 1 begins to drop, a vacuum is formed at the upper part of the left tank 1, the first inlet check valve 1-9 opens, and the first outlet check valve 1-10 closes.
  • the mixed liquid and gas medium is sucked into the left tank 1 through the first medium inlet 1-3. After the mixed medium enters the left tank 1, the liquid and gas are separated, and the gas collects on the top of the left tank 1, and the liquid moves downward with the liquid surface . Under the positive pressure of the power pump 3 outlet, the liquid level in the right tank 2 rises, the second inlet check valve 2-9 closes, the second outlet check valve 2-10 opens, and the liquid in the right tank 2 passes through the Two medium outlets 2-4, discharged into the outlet header 6.
  • the first liquid level gauge 1-12 transmits the liquid level signal to the data acquisition control system 4 and the data acquisition control system 4 According to the liquid level signal, control commands are issued: the first inlet solenoid valve 1-7, the second outlet solenoid valve 2-8 are opened, the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 are closed, and the power pump Under the action of 3, the liquid in the right tank 2 passes through the second circulating liquid outlet 2-2, the second outlet solenoid valve 2-8, the power pump 3, the first inlet solenoid valve 1-7, and the first circulation liquid inlet 1 -1, is discharged into the left tank 1.
  • the double-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, which is in a state where the left tank 1 is discharged and the right tank 2 is inhaled.
  • the liquid level in the right tank 2 begins to drop, a vacuum is formed at the upper part of the right tank 2, the second inlet check valve 2-9 opens, and the second outlet check valve 2-10 closes.
  • the mixed medium of liquid and gas is sucked into the right tank 2 through the second medium inlet 2-3. After the mixed medium enters the right tank 2, the liquid and gas are separated, and the gas collects on the top of the right tank 2, and the liquid moves downward with the liquid surface .
  • the second liquid level gauge 2-12 transmits the liquid level signal to the data acquisition control system 4, and the data acquisition control system 4 issues control according to the liquid level signal Instructions:
  • the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 solenoid valve is opened, the first inlet solenoid valve 1-7, the second outlet solenoid valve 2-8 solenoid valve is closed.
  • the liquid in the left tank 1 passes through the first circulating liquid outlet 1-2, the first outlet solenoid valve 1-8, the power pump 3, the second inlet solenoid valve 2-7, the second circulation
  • the liquid inlet 2-1 is discharged into the right tank 2.
  • the double-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, and is in the state of the left tank 1 sucking and the right tank 2 discharging. Repeating the above actions, the liquids in the two tanks are driven back and forth, and the two tanks are alternately sucked in and discharged to achieve the mixed transportation of liquid and gas.
  • the inlet manifold 5 and the outlet manifold 6 of the multi-chamber liquid multi-phase flow mixing device are reciprocally driven by two-chamber liquid, which are installed in series on the gas delivery pipeline. Circulating fluid, the liquid level is at the bottom dead center.
  • Control commands are issued through the data acquisition control system 4: the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 solenoid valve is opened, the first inlet solenoid valve 1-7, the second outlet solenoid valve 2-8 solenoid valve Turn off, start the power pump 3 operation.
  • the liquid in the left tank 1 passes through the first circulating liquid outlet 1-2, the first outlet solenoid valve 1-8, the power pump 3, the second inlet solenoid valve 2-7, the second circulation
  • the liquid inlet 2-1 is discharged into the right tank 2.
  • the double-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, which is in a state where the left tank 1 is vacuum-inhaled and the right tank 2 is compressed and discharged.
  • the liquid level in the left tank 1 begins to fall, the upper part of the left tank 1 forms a vacuum, the first inlet check valve 1-9 opens, the first outlet check valve 1-10 closes, and the gas The medium enters the 1-3 port through the first medium and is drawn into the left tank 1.
  • the liquid level in the right tank 2 rises, the second inlet check valve 2-9 closes, the second outlet check valve 2-10 opens, and the gas at the top of the right tank 2 is trapped Compressed, discharged into the outlet header 6 through the second medium outlet 2-4.
  • the two-level gauge 2-12 transmits the liquid level signal to the data acquisition control system 4, and the data acquisition control system 4 issues control commands according to the liquid level signal: the first inlet solenoid valve 1-7, the second outlet solenoid valve 2-8 Open, the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 close, under the action of the power pump 3, the liquid in the right tank 2, through the second circulating liquid outlet 2-2, the second outlet electromagnetic
  • the valve 2-8, the power pump 3, the first inlet solenoid valve 1-7, and the first circulating liquid inlet 1-1 are discharged into the left tank 1.
  • the dual-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, which is in the state that the left tank 1 is compressed and discharged, and the right tank 2 is vacuum-inhaled. Under the action of the negative pressure at the inlet of the power pump 3, the liquid level in the right tank 2 begins to drop, a vacuum is formed at the upper part of the right tank 2, the second inlet check valve 2-9 opens, and the second outlet check valve 2-10 closes.
  • the gas medium is sucked into the right tank 2 through the second medium inlet 2-3, and gathers at the top of the right tank 2; under the action of the positive pressure of the power pump 3 outlet, the liquid level in the left tank 1 rises, and the first inlet is unidirectional Valves 1-9 are closed, the first outlet check valve 1-10 is opened, and the gas at the top of the left tank 1 is compressed by the rising liquid and discharged into the outlet manifold 6 through the first medium outlet 1-4.
  • the first liquid level gauge 1-12 transmits the liquid level signal to the data acquisition control system 4, and the data acquisition control system 4 sends out control commands according to the liquid level signal: the first outlet solenoid valve 1-8, the second inlet solenoid valve 2- 7
  • the solenoid valve is opened, and the first inlet solenoid valve 1-7 and the second outlet solenoid valve 2-8 are closed.
  • the liquid in the left tank 1 passes through the first circulating liquid outlet 1-2, the first outlet solenoid valve 1-8, the power pump 3, the second inlet solenoid valve 2-7, the second circulation
  • the liquid inlet 2-1 is discharged into the right tank 2.
  • the double-chamber liquid reciprocatingly drives the multiphase flow mixing and transporting device, which is in a state where the left tank 1 is vacuum-inhaled and the right tank 2 is compressed and discharged. Repeating the above actions, the liquid in the two tanks is driven back and forth, and the two tanks are alternately vacuumed in and compressed and discharged, realizing the continuous transportation of the gas medium.
  • a double-chamber liquid reciprocating multiphase flow mixing and transporting device has the same structure as the mixing and transporting device in Embodiment 1, except that the electromagnetic directional valve 7 is used to replace the electromagnetic valve in Embodiment 1.
  • the group is the first inlet solenoid valve 1-7, the first outlet solenoid valve 1-8, the second inlet solenoid valve 2-7 solenoid valve and the second outlet solenoid valve 2-8 solenoid valve.
  • the port A of the valve 7 is connected; the second circulation liquid inlet 2-14 is connected to the port B of the electromagnetic reversing valve 7; the inlet of the power pump 3 is connected to the T port of the electromagnetic reversing valve 7, and the outlet of the power pump 3 is connected to the electromagnetic reversing Connect to the P port of the valve 7.
  • the working state of the dual-chamber liquid reciprocating multiphase flow mixing and conveying device in this embodiment is the same as that in Embodiment 1, except that the switching of the reversing unit is controlled, that is, the left and right reversal of the electromagnetic reversing valve 7 is controlled, and the power pump 3 is automatically switched.
  • the flow direction of the inlet and outlet; therefore, except for the change of the commutation mode, the dual-chamber liquid reciprocating multiphase flow mixing and transporting device and the operating state in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

一种双腔液体往复驱动多相流混输装置，包括左罐(1)、右罐(2)、动力泵(3)、数据采集控制系统(4)、电磁阀组、单向阀组以及入口汇管(5)和出口汇管(6)，利用两罐交替形成的真空吸入腔和压缩排出腔作为多相流混输泵的吸入室和排出室，液气混合物中的气体在罐内分离后被液体压缩排出罐外，动力泵始终工作在纯液体工况，消除了高含气对动力泵的影响问题，使用普通的水泵即可实现多相流的混合输送，甚至可以作为纯气体的真空泵和压缩机连续运行。还公开了应用该双腔液体往复驱动多相流混输装置输送多相流的方法。

Description

双腔液体往复驱动多相流混输方法及其装置 技术领域
本发明属于油田生产中油、气混合输送和天然气井增压输送装置领域，具体涉及一种液体、气体或液体、气体多相流混合状态下的混输方法与装置。
背景技术
原油产出物主要是油、水、气的混合物，同时还含有少量的泥沙，是一种多相混合物。油田油气采输的传统工艺是先将油、气、水分离，再用油泵、水泵、压缩机分别输送，存在工艺流程复杂，投资大、运行维护困难等缺点。
多相流混输技术是近年来发展起来的一种高效、经济的泵送技术，是国内外油田采输技术的发展趋势。它是用一台多相流混输泵，代替输液泵和气体压缩机，通过一条管道，同时输送含有沙粒的油、气、水。多相流混输泵是一种专门用于输送原油混合物的设备，与分离法相比，他不需要设立专门的分离设备，节省了一条管道流程，特别适合原油混合物的远距离输送。我国在多相流混输泵产品的开发方面，还处于起步研究阶段，主要有螺杆泵、滑板式转子泵等机械旋转式多相流混输泵，存在着众多技术难题，有待研究解决，多相流混输泵主要依靠进口，消耗着大量外汇资金，因此研究和开发多相流混输泵对我国石油开发有着十分重要的意义。
目前国内外机械旋转式多相流混输泵，普遍存在以下技术难题：
1.高含气对多相流混输泵的影响：
机械旋转式多相流混输泵都属于间隙密封，在输送气体时需要部分液体来保证泵腔的密封、润滑和冷却，在高含气或段塞流状态下，多相流混输泵会因缺少液体密封，致使泵效大幅下降，甚至无法运行。
2.高含水对多相流混输泵的影响：
多相流中油、气、水混合并不均匀，在高含水状态下，水会将泵腔内各摩擦部件间的润滑油带走，如转子与侧板、螺杆与螺套、转子轴承等部件，因缺乏润滑油而加剧磨损，造成短期内烧结损坏。
3.多相流混输泵的动态密封问题：
多相流混输泵最大的密封难题，在于轴端和泵腔内轴用动态密封，它面临的是一个多相密封问题。不仅是纯液或纯气条件下的密封，还要考虑在高速及变速状态下的密封难题。多相流混输泵的密封问题，是国内外多相流混输泵设计研究的重要问题。
4.负荷变化对多相流混输泵的影响：
机械旋转式多相泵的负荷和转速，会随介质流态的变化而变化，而高速旋转的转子又加剧了气、液分离，产生更大的负荷变化，造成传动轴的剧烈振动和位移，甚至断裂。
发明内容
本发明的目的就是针对现有技术存在的缺陷，提供一种驱动泵始终工作在纯液体工况的双腔液体往复驱动多相流混输方法与装置，实现液体、气体或液体、气体混合输送。
本发明的原理如下：动力泵驱动左罐、右罐中的液体往复循环，使左罐、右罐交替形成动力泵进、出口端的真空吸入腔和压缩排出腔，实现对液体、气体或液体、气体混合物的连续输送；液位计将左罐、右罐的液位信号传输给数据采集控制系统；数据采集控制系统根据左罐、右罐的液位变化，控制电磁阀组或者电磁换向阀的开启和关闭，自动切换动力泵进、出口流向；左罐、右罐上入口单向阀、出口单向阀，受左罐、右罐内压力控制，自动开启和关闭，实现对被输送介质的连续吸入和排出。
首先，本发明提供双腔液体往复驱动多相流混输装置的技术方案，其包括电磁阀组换向和电磁换向阀换向两种形式，具体如下：
其一，电磁阀组换向的双腔液体往复驱动多相流混输装置的技术方案如下：
包括左罐、右罐、动力泵、数据采集控制系统、电磁阀组、单向阀组以及入、出口汇管；其中：
所述左罐、右罐的上部均设有介质入口和介质出口，且所述介质入口均通过入口单向阀与所述入口汇管连接，所述介质出口均通过出口单向阀与所述出口汇管连接；
所述左罐、右罐的侧壁的上部均设有循环液入口、下部均设有循环液出口，且所述循环液入口上均连接有入口电磁阀、循环液出口上均连接有出口电磁阀；所述动力泵的入口管线设有分支分别与所述左罐、右罐的出口电磁阀连接，所述动力泵的出口管线设有分支分别与所述左罐、右罐的入口电磁阀连接；
所述左罐、右罐上均安装有液位计，且所述液位计分别通过数据线与所述数据采集控制系统连接；所述数据采集控制系统分别通过控制线与所述入口电磁阀、出口电磁阀连接。
其二，电磁换向阀换向的双腔液体往复驱动多相流混输装置的技术方案如下：
包括左罐、右罐、动力泵、数据采集控制系统、电磁换向阀、单向阀组以及入、出口汇管；其中：
所述左罐、右罐的上部均设有介质入口和介质出口，且所述介质入口均通过入口单向阀与所述入口汇管连接，所述介质出口均通过出口单向阀与所述出口汇管连接；
所述左罐、右罐的侧壁上均设有一个循环液出入口，所述动力泵通过同一电磁换向阀分别与左 罐、右罐的循环液出入口连接；
所述左罐、右罐上均安装有液位计，且所述液位计分别通过数据线与所述数据采集控制系统连接；所述数据采集控制系统通过控制线与所述电磁换向阀连接。
进一步的，电磁换向阀换向方式中：所述左罐、右罐的循环液出入口分别与所述电磁换向阀的A口、B口连接，所述动力泵的入口、出口分别与所述电磁换向阀的T口、P口连接。
进一步的，电磁阀组换向和电磁换向阀换向两种方式中：
所述左罐、右罐的底部均设有排污口，且所述排污口上安装有排污阀。
所述液位计的感应端分别与所述左罐、右罐下部的液位检测口连接、通气端分别与所述左罐、右罐上部的介质出口相连。
接着，提供一种应用上述双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法，同理也是包括电磁阀组换向和电磁换向阀换向两种形式，具体如下：
其一，电磁阀组换向的双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法，包括如下步骤：
(1)将双腔液体往复驱动多相流混输装置通过入口汇管、出口汇管串联安装在流体混输管道上；液体、气体混合介质依次经入口汇管、入口单向阀和介质入口同时流入左罐和右罐内；左罐、右罐内的气体依次经介质出口、出口单向阀以及出口汇管排出；
(2)当左罐和右罐内液位到达预先设定的上止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
(3)启动动力泵，左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置处于左罐吸入、右罐排出的状态；
(4)在动力泵入口负压的作用下，左罐内的液位开始下降，左罐上部形成真空，其入口单向阀开启、出口单向阀关闭，液、气混合介质经介质入口被吸入左罐内，混合介质进入左罐内后液、气分离，气体聚集在左罐顶部，液体随着液面向下运动；在动力泵出口正压的作用下，右罐内的液位上升，其入口单向阀、出口单向阀开启，右罐内的液体经介质出口排入出口汇管；
(5)当左罐内的液位下降到预先设定的下止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的出口电磁阀和右罐上的入口电磁阀，同时打开左罐上的入口电磁阀和右罐上的出口电磁阀；
(6)在动力泵的作用下右罐内的液体被排入左罐内，整个混输装置处于左罐排出、右罐吸入状态；
(7)在动力泵入口负压的作用下，右罐内的液位开始下降，右罐上部形成真空，其入口单向阀开启、出口单向阀关闭，液、气混合介质经介质入口被吸入右罐内，混合介质进入右罐内后，液、气分离，气体聚集在右罐顶部，液体随着液面向下运动；在动力泵出口正压的作用下，左罐内的液位上升，其入口单向阀关闭、出口单向阀开启，左罐内的气体和液体经介质出口排入出口汇管；
(8)当右罐内的液位下降到预先设定的下止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号，发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
(9)在动力泵的作用下，左罐中的液体被排入右罐内；整个混输装置又处于左罐吸入、右罐排出状态；
(10)重复上述动作，两罐内液体往复驱动，两罐交替吸入、排出，实现了液体、气体的混合输送。
其二，电磁换向阀换向的双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法，步骤与电磁阀组换向的方式一致，仅采用电磁换向阀取代其中的入口电磁阀、出口电磁阀，实现切换动力泵进出口流向功能。
最后，提供一种应用上述双腔液体往复驱动多相流混输装置输送气体介质的方法，同理也是包括电磁阀组换向和电磁换向阀换向两种形式，具体如下：
其一，电磁阀组换向的双腔液体往复驱动多相流混输装置输送气体介质的方法，包括如下步骤：
(1)将双腔液体往复驱动多相流混输装置的入口汇管、出口汇管串联安装在气体输送管道上，预先将左罐内充满循环液体，控制右罐内的循环液液位处于预先设定的下止点位置；
(2)通过数据采集控制系统发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
(3)启动动力泵，左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置处于左罐真空吸入、右罐压缩排出状态；
(4)在动力泵入口负压作用下，左罐内的液位开始下降，左罐上部形成真空，其入口单向阀开启、出口单向阀关闭，气体介质经介质入口被吸入左罐内；在动力泵出口正压作用下，右罐内的液位上升，其入口单向阀关闭、出口单向阀开启，右罐顶部的气体被液面压缩，经介质出口排入出口汇管；
(5)当右罐内的液位到达预先设定的上止点位置时，罐内顶部的气体被液面压缩，全部排出；左罐内液位同时到达预先设定的下止点位置，罐内顶部充满被吸入的气体介质；液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的出口电磁 阀和右罐上的入口电磁阀，同时打开左罐上的入口电磁阀和右罐上的出口电磁阀；
(6)在动力泵的作用下，右罐内的液体被排入左罐内，整个混输装置处于左罐压缩排出、右罐真空吸入状态；
(7)在动力泵入口负压的作用下，右罐内的液位开始下降，右罐上部形成真空，其入口单向阀开启、出口单向阀关闭，气体介质经介质入口被吸入右罐内，聚集在右罐顶部；在动力泵出口正压的作用下，左罐内的液位上升，其入口单向阀关闭、出口单向阀开启，左罐顶部的气体，被上升的液体压缩，经介质出口排入出口汇管；
(8)当左罐内的液位到达上止点位置时，罐内顶部的气体被液面压缩，全部排出；右罐内的液位同时到达下止点位置，罐内顶部充满被吸入的气体介质，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号，发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
(9)左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置又处于左罐真空吸入、右罐压缩排出状态；
(10)重复上述动作，两罐内液体往复驱动，两罐交替真空吸入、压缩排出，实现了气体介质的连续输送。
其二，电磁换向阀换向的双腔液体往复驱动多相流混输装置输送气体介质的方法，步骤与电磁阀组换向的方式一致，仅采用电磁换向阀取代其中的入口电磁阀、出口电磁阀，实现切换动力泵进出口流向功能。
本发明与现有技术相比较，具有以下优点：
(1)利用两罐交替形成的真空吸入腔和压缩排出腔，作为多相流混输泵的吸入室和排出室，液气混合物中的气体在罐内分离后，被液体压缩排出罐外，动力泵始终工作在纯液体工况，消除了高含气对泵的影响问题，使用普通的水泵即可实现多相流的混合输送，甚至可以作为纯气体的真空泵和压缩机连续运行，为多相流混输技术领域，提供了新的技术方法和研发方向。
(2)结构原理简单，两罐中上升和下降的液面，起到了动力活塞的作用，不存在机械密封和润滑问题，液面的驱动使用普通水泵即可，没有机械旋转式多相流混输泵的复杂结构，解决了高含水对泵的影响问题。
(3)驱动泵始终工作在纯液体工况，使用普通的机械密封即可，解决了多相流混输泵的多相密封难题。
(4)驱动泵始终工作在纯液体工况，不存在因介质流态变化引起的负载变化。
附图说明
图1是本发明实施例1中的双腔液体往复驱动多相流混输装置的结构示意图；
图2是本发明实施例2中的双腔液体往复驱动多相流混输装置的结构示意图；
图中：1、左罐，1-1第一循环液入口，1-2、第一循环液出口，1-3、第一介质入口，1-4、第一介质出口，1-5、第一液位检测口，1-6、第一排污口，1-7、第一入口电磁阀，1-8、第一出口电磁阀，1-9、第一入口单向阀，1-10、第一出口单向阀，1-11、第一排污阀，1-12、第一液位计，1-13、第一连通管，1-14、第一循环液出入口；2、右罐，2-1、第二循环液入口，2-2、第二循环液出口，2-3、第二介质入口，2-4、第二介质出口，2-5、第二液位检测口，2-6、第二排污口，2-7、第二入口电磁阀，2-8、第二出口电磁阀，2-9、第二入口单向阀，2-10、第二出口单向阀，2-11、第二排污阀，2-12、第二液位计，2-13、第二连通管，2-14、第二循环液出入口；3、动力泵；4、数据采集控制系统；5、入口汇管；6、出口汇管；7、电磁换向阀。
具体实施方式
实施例1
参照图1，一种双腔液体往复驱动多相流混输装置，包括左罐1、右罐2，动力泵3、数据采集控制系统4、电磁阀组、单向阀组以及入口汇管5、出口汇管6；其中：
左罐1、右罐2的上部均设有介质入口和介质出口，即第一介质入口1-3、第二介质入口2-3、第一介质出口1-4、第二介质出口2-4；第一介质入口1-3、第二介质入口2-3分别通过第一入口单向阀1-9、第二入口单向阀2-9与入口汇管5连接；第一介质出口1-4、第二介质出口2-4分别通过第一出口单向阀1-10、第二出口单向阀2-10与出口汇管6连接。
左罐1、右罐2的侧壁的上部均设有循环液入口、下部均设有循环液出口，即第一循环液入口1-1、第二循环液入口2-1、第一循环液出口1-2、第二循环液出口2-2；第一循环液入口1-1上连接有第一入口电磁阀1-7，第一循环液出口1-2上连接有第一出口电磁阀1-8，第二循环液入口2-1上连接有第二入口电磁阀2-7，第二循环液出口2-2上连接有第二出口电磁阀2-8。
动力泵3的入口管线设有分支分别与左罐1、右罐2的第一出口电磁阀1-8、第二出口电磁阀2-8连接，动力泵3的出口管线设有分支分别与左罐1、右罐2的第一入口电磁阀1-7、第二入口电磁阀2-7连接。
左罐、右罐上分别安装有第一液位计1-12、第二液位计2-12，且第一液位计1-12、第二液位计2-12通过两路数据线分别与数据采集控制系统4连接；数据采集控制系统通过四路控制线分别与第一入口电磁阀1-7、第二入口电磁阀2-7、第一出口电磁阀1-8以及第二出口电磁阀2-8连接。即数据采集控制系统通过4路控制线，来控制各个电磁阀的开启和关闭。
上述双腔液体往复驱动多相流混输装置包括两种工作状态，即液体、气体混合介质多相流混输 状态和纯气体输送状态，工作过程分别如下：
1、液体、气体混合介质多相流混输状态(混输泵功能)：：
参见图1，将双腔液体往复驱动多相流混输装置的进口汇管5、出口汇管6，串联安装在流体混输管道上，液体、气体混合介质经入口汇管5、入口单向阀(第一入口单向阀1-9、第二入口单向阀2-9)、介质入口(第一介质入口1-3,第二介质入口2-3)，同时流入左罐1、右罐2内。左罐1、右罐2内的气体经介质出口(第一介质出口1-4,第二介质出口2-4)、出口单向阀(第一出口单向阀1-10,第二出口单向阀2-10)、出口汇管6排出。
当左罐1、右罐2内液位到达上止点位置(罐体顶部)时，第一液位计1-12、第二液位计2-12将液位信号传输给数据采集控制系统4，数据采集控制系统4根据液位信号，发出控制指令：第一出口电磁阀1-8、第二入口电磁阀2-7电磁阀开启，第一入口电磁阀1-7、第二出口电磁阀2-8电磁阀关闭，启动动力泵3。左罐1中的液体，在动力泵3的作用下，经第一循环液出口1-2、第一出口电磁阀1-8、动力泵3、第二入口电磁阀2-7、第二循环液入口2-1，被排入右罐2内。双腔液体往复驱动多相流混输装置，处于左罐1吸入，右罐2排出状态。在动力泵3入口负压的作用下，左罐1内的液位开始下降，左罐1上部形成真空，第一入口单向阀1-9开启，第一出口单向阀1-10关闭，液、气混合介质，经第一介质入口1-3被吸入左罐1内，混合介质进入左罐1内后，液、气分离，气体聚集在左罐1顶部，液体随着液面向下运动。在动力泵3出口正压的作用下，右罐2内的液位上升，第二入口单向阀2-9关闭，第二出口单向阀2-10开启，右罐2内的液体经第二介质出口2-4，排入出口汇管6。
当左罐1内的液位，下降到下止点位置(罐体的一半位置)时，第一液位计1-12，将液位信号传输给数据采集控制系统4，数据采集控制系统4根据液位信号，发出控制指令：第一入口电磁阀1-7、第二出口电磁阀2-8开启，第一出口电磁阀1-8、第二入口电磁阀2-7关闭，在动力泵3的作用下，右罐2内的液体，经第二循环液出口2-2、第二出口电磁阀2-8、动力泵3、第一入口电磁阀1-7、第一循环液入口1-1，被排入左罐1内。双腔液体往复驱动多相流混输装置，处于左罐1排出，右罐2吸入状态。在动力泵3入口负压的作用下，右罐2内的液位开始下降，右罐2上部形成真空，第二入口单向阀2-9开启，第二出口单向阀2-10关闭，液、气混合介质，经第二介质入口2-3被吸入右罐2内，混合介质进入右罐2内后，液、气分离，气体聚集在右罐2顶部，液体随着液面向下运动。在动力泵3出口正压的作用下，左罐1内的液位上升，第一入口单向阀1-9关闭，第一出口单向阀1-10开启，左罐1内的气体和液体，经第一介质出口1-4，排入出口汇管6。
当右罐2内的液位，下降到下止点位置时，第二液位计2-12，将液位信号传输给数据采集控 制系统4，数据采集控制系统4根据液位信号，发出控制指令：第一出口电磁阀1-8、第二入口电磁阀2-7电磁阀开启，第一入口电磁阀1-7、第二出口电磁阀2-8电磁阀关闭。左罐1中的液体，在动力泵3的作用下，经第一循环液出口1-2、第一出口电磁阀1-8、动力泵3、第二入口电磁阀2-7、第二循环液入口2-1，被排入右罐2内。双腔液体往复驱动多相流混输装置，又处于左罐1吸入，右罐2排出状态。重复上述动作，两罐内液体往复驱动，两罐交替吸入、排出，实现了液体、气体的混合输送。
2、纯气体输送状态：(真空泵、压缩机功能)
参见图1，将双腔液体往复驱动多相流混输装置的进口汇管5、出口汇管6，串联安装在气体输送管道上，预先将左罐1内充满循环液体，右罐2内的循环液，液位处于下止点。
通过数据采集控制系统4发出控制指令：第一出口电磁阀1-8、第二入口电磁阀2-7电磁阀开启，第一入口电磁阀1-7、第二出口电磁阀2-8电磁阀关闭，启动动力泵3运行。左罐1中的液体，在动力泵3的作用下，经第一循环液出口1-2、第一出口电磁阀1-8、动力泵3、第二入口电磁阀2-7、第二循环液入口2-1，被排入右罐2内。双腔液体往复驱动多相流混输装置，处于左罐1真空吸入，右罐2压缩排出状态。在动力泵3入口负压作用下，左罐1内的液位开始下降，左罐1上部形成真空，第一入口单向阀1-9开启，第一出口单向阀1-10关闭，气体介质，经第一介质入1-3口，被吸入左罐1内。在动力泵3出口正压作用下，右罐2内的液位上升，第二入口单向阀2-9关闭，第二出口单向阀2-10开启，右罐2顶部的气体被液面压缩，经第二介质出口2-4，排入出口汇管6。
当右罐2内的液位到达上止点时，罐内顶部的气体被液面压缩，全部排出；左罐1内液位同时到达下止点，罐内顶部充满被吸入的气体介质，第二液位计2-12将液位信号传输给数据采集控制系统4，数据采集控制系统4根据液位信号，发出控制指令：第一入口电磁阀1-7、第二出口电磁阀2-8开启，第一出口电磁阀1-8、第二入口电磁阀2-7关闭，在动力泵3的作用下，右罐2内的液体，经第二循环液出口2-2、第二出口电磁阀2-8、动力泵3、第一入口电磁阀1-7、第一循环液入口1-1，被排入左罐1内。双腔液体往复驱动多相流混输装置，处于左罐1压缩排出，右罐2真空吸入状态。在动力泵3入口负压的作用下，右罐2内的液位开始下降，右罐2上部形成真空，第二入口单向阀2-9开启，第二出口单向阀2-10关闭，气体介质，经第二介质入口2-3被吸入右罐2内，聚集在右罐2顶部；在动力泵3出口正压的作用下，左罐1内的液位上升，第一入口单向阀1-9关闭，第一出口单向阀1-10开启，左罐1顶部的气体，被上升的液体压缩，经第一介质出口1-4，排入出口汇管6。
当左罐1内的液位到达上止点时，罐内顶部的气体被液面压缩，全部排出；右罐2内的液位同 时到达下止点，罐内顶部充满被吸入的气体介质，第一液位计1-12将液位信号传输给数据采集控制系统4，数据采集控制系统4根据液位信号，发出控制指令：第一出口电磁阀1-8、第二入口电磁阀2-7电磁阀开启，第一入口电磁阀1-7、第二出口电磁阀2-8电磁阀关闭。左罐1中的液体，在动力泵3的作用下，经第一循环液出口1-2、第一出口电磁阀1-8、动力泵3、第二入口电磁阀2-7、第二循环液入口2-1，被排入右罐2内。双腔液体往复驱动多相流混输装置，处于左罐1真空吸入，右罐2压缩排出状态。重复上述动作，两罐内液体往复驱动，两罐交替真空吸入、压缩排出，实现了气体介质的连续输送。
实施例2
参照图1，一种双腔液体往复驱动多相流混输装置，该装置与实施例1中的混输装置结构基本相同，区别仅在于用电磁换向阀7替换实施例1中的电磁阀组即第一入口电磁阀1-7、第一出口电磁阀1-8、第二入口电磁阀2-7电磁阀和第二出口电磁阀2-8电磁阀，实现切换动力泵3的进、出口流向的功能，并且由于采用一个电磁换向阀7，因此左罐1和右罐2上的第一循环液入口1-1、第一循环液出口1-2、第二循环液入口2-1以及第一循环液出口1-2由四个口减少为第一循环液出入口1-14和第二循环液出入口2-14两个口；其中第一循环液出入口1-14与电磁换向阀7的A口相连；第二循环液出入口2-14与电磁换向阀7的B口相连；动力泵3的入口与电磁换向阀7的T口相连，动力泵3的出口与电磁换向阀7的P口相连。本实施例中的双腔液体往复驱动多相流混输装置的工作状态同实施例1，区别仅在于换向单元的转换，即控制电磁换向阀7的左右换向，自动切换动力泵3进、出口流向；因此除了换向方式的转变，本实施例中双腔液体往复驱动多相流混输装置以及运行状态与实施例1均一致，不再赘述。
以上所述，仅是本发明的典型实施例，本领域的技术人员均可能利用上述阐述的技术方案对本发明加以修改或将其修改为等同的技术方案。因此，依据本发明的技术方案所进行的任何简单修改或等同置换，尽属于本发明要求保护的范围。

Claims (10)

  1. 双腔液体往复驱动多相流混输装置，其特征在于，包括左罐、右罐、动力泵、数据采集控制系统、电磁阀组、单向阀组以及入、出口汇管；其中：
    所述左罐、右罐的上部均设有介质入口和介质出口，且所述介质入口均通过入口单向阀与所述入口汇管连接，所述介质出口均通过出口单向阀与所述出口汇管连接；
    所述左罐、右罐的侧壁的上部均设有循环液入口、下部均设有循环液出口，且所述循环液入口上均连接有入口电磁阀、循环液出口上均连接有出口电磁阀；所述动力泵的入口管线设有分支分别与所述左罐、右罐的出口电磁阀连接，所述动力泵的出口管线设有分支分别与所述左罐、右罐的入口电磁阀连接；
    所述左罐、右罐上均安装有液位计，且所述液位计分别通过数据线与所述数据采集控制系统连接；所述数据采集控制系统分别通过控制线与所述入口电磁阀、出口电磁阀连接。
  2. 双腔液体往复驱动多相流混输装置，其特征在于，包括左罐、右罐、动力泵、数据采集控制系统、电磁换向阀、单向阀组以及入、出口汇管；其中：
    所述左罐、右罐的上部均设有介质入口和介质出口，且所述介质入口均通过入口单向阀与所述入口汇管连接，所述介质出口均通过出口单向阀与所述出口汇管连接；
    所述左罐、右罐的侧壁上均设有一个循环液出入口，所述动力泵通过同一电磁换向阀分别与左罐、右罐的循环液出入口连接；
    所述左罐、右罐上均安装有液位计，且所述液位计分别通过数据线与所述数据采集控制系统连接；所述数据采集控制系统通过控制线与所述电磁换向阀连接。
  3. 根据权利要求2所述的双腔液体往复驱动多相流混输装置，其特征在于，所述左罐、右罐的循环液出入口分别与所述电磁换向阀的A口、B口连接，所述动力泵的入口、出口分别与所述电磁换向阀的T口、P口连接。
  4. 根据权利要求1-3任一项所述的双腔液体往复驱动多相流混输装置，其特征在于，所述左罐、右罐的底部均设有排污口，且所述排污口上安装有排污阀。
  5. 根据权利要求1-3任一项所述的双腔液体往复驱动多相流混输装置，其特征在于，所述液位计的感应端分别与所述左罐、右罐下部的液位检测口连接、通气端分别与所述左罐、右罐上部的介质出口相连。
  6. 应用权利要求1所述双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法，其特征在于，包括如下步骤：
    (1)将双腔液体往复驱动多相流混输装置通过入口汇管、出口汇管串联安装在流体混输管道上；液体、气体混合介质依次经入口汇管、入口单向阀和介质入口同时流入左罐和右罐内；左罐、右罐内的气体依次经介质出口、出口单向阀以及出口汇管排出；
    (2)当左罐和右罐内液位到达预先设定的上止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
    (3)启动动力泵，左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置处于左罐吸入、右罐排出的状态；
    (4)在动力泵入口负压的作用下，左罐内的液位开始下降，左罐上部形成真空，其入口单向阀开启、出口单向阀关闭，液、气混合介质经介质入口被吸入左罐内，混合介质进入左罐内后液、气分离，气体聚集在左罐顶部，液体随着液面向下运动；在动力泵出口正压的作用下，右罐内的液位上升，其入口单向阀关闭、出口单向阀开启，右罐内的液体经介质出口排入出口汇管；
    (5)当左罐内的液位下降到预先设定的下止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的出口电磁阀和右罐上的入口电磁阀，同时打开左罐上的入口电磁阀和右罐上的出口电磁阀；
    (6)在动力泵的作用下右罐内的液体被排入左罐内，整个混输装置处于左罐排出、右罐吸入状态；
    (7)在动力泵入口负压的作用下，右罐内的液位开始下降，右罐上部形成真空，其入口单向阀开启、出口单向阀关闭，液、气混合介质经介质入口被吸入右罐内，混合介质进入右罐内后，液、气分离，气体聚集在右罐顶部，液体随着液面向下运动；在动力泵出口正压的作用下，左罐内的液位上升，其入口单向阀关闭、出口单向阀开启，左罐内的气体和液体经介质出口排入出口汇管；
    (8)当右罐内的液位下降到预先设定的下止点位置时，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号，发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
    (9)在动力泵的作用下，左罐中的液体被排入右罐内；整个混输装置又处于左罐吸入、右罐排出状态；
    (10)重复上述动作，两罐内液体往复驱动，两罐交替吸入、排出，实现了液体、气体的混合输送。
  7. 应用权利要求1所述双腔液体往复驱动多相流混输装置输送气体介质的方法，其特征在于，包括如下步骤：
    (1)将双腔液体往复驱动多相流混输装置的入口汇管、出口汇管串联安装在气体输送管道上，预先将左罐内充满循环液体，控制右罐内的循环液液位处于预先设定的下止点位置；
    (2)通过数据采集控制系统发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
    (3)启动动力泵，左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置处于左罐真空吸入、右罐压缩排出状态；
    (4)在动力泵入口负压作用下，左罐内的液位开始下降，左罐上部形成真空，其入口单向阀开启、出口单向阀关闭，气体介质经介质入口被吸入左罐内；在动力泵出口正压作用下，右罐内的液位上升，其入口单向阀关闭、出口单向阀开启，右罐顶部的气体被液面压缩，经介质出口排入出口汇管；
    (5)当右罐内的液位到达预先设定的上止点位置时，罐内顶部的气体被液面压缩，全部排出；左罐内液位同时到达预先设定的下止点位置，罐内顶部充满被吸入的气体介质；液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号发出控制指令：关闭左罐上的出口电磁阀和右罐上的入口电磁阀，同时打开左罐上的入口电磁阀和右罐上的出口电磁阀；
    (6)在动力泵的作用下，右罐内的液体被排入左罐内，整个混输装置处于左罐压缩排出、右罐真空吸入状态；
    (7)在动力泵入口负压的作用下，右罐内的液位开始下降，右罐上部形成真空，其入口单向阀开启、出口单向阀关闭，气体介质经介质入口被吸入右罐内，聚集在右罐顶部；在动力泵出口正压的作用下，左罐内的液位上升，其入口单向阀关闭、出口单向阀开启，左罐顶部的气体，被上升的液体压缩，经介质出口排入出口汇管；
    (8)当左罐内的液位到达上止点位置时，罐内顶部的气体被液面压缩，全部排出；右罐内的液位同时到达下止点位置，罐内顶部充满被吸入的气体介质，液位计将液位信号传输给数据采集控制系统，数据采集控制系统根据液位信号，发出控制指令：关闭左罐上的入口电磁阀和右罐上的出口电磁阀，同时打开左罐上的出口电磁阀和右罐上的入口电磁阀；
    (9)左罐中的液体在动力泵的作用下被排入右罐内，整个混输装置又处于左罐真空吸入、右罐压缩排出状态；
    (10)重复上述动作，两罐内液体往复驱动，两罐交替真空吸入、压缩排出，实现了气体介质的连续输送。
  8. 应用权利要求2所述双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法，其特征在于，步骤与权利要求6一致，仅采用电磁换向阀取代其中的入口电磁阀、出口电磁阀，实 现切换动力泵进出口流向功能。
  9. 应用权利要求2所述双腔液体往复驱动多相流混输装置输送气体介质的方法，其特征在于，步骤与权利要求7一致，仅采用电磁换向阀取代其中的入口电磁阀、出口电磁阀，实现切换动力泵进出口流向功能。
  10. 根据权利要求6、8任一项所述双腔液体往复驱动多相流混输装置输送液体、气体混合介质的方法或者权利要求7、9任一项所述双腔液体往复驱动多相流混输装置输送气体介质的方法，其特征在于，所述上止点位置位于罐体顶部、下止点位于罐体一半位置。
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