CN107561077A - A kind of adjustable tilt pipe angle Solid-fluid Two-phase Flow test system - Google Patents
A kind of adjustable tilt pipe angle Solid-fluid Two-phase Flow test system Download PDFInfo
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Abstract
Description
技术领域technical field
本发明属于两相流动实验测试技术领域，特别是涉及一种可调整倾斜管道角度固液两相流动测试系统。The invention belongs to the technical field of two-phase flow experiments and tests, and in particular relates to a solid-liquid two-phase flow test system with an adjustable inclined pipeline angle.
背景技术Background technique
目前，随着港口、航道、水利及沿海城市建设的发展，疏浚企业所涉及的工程情况也更加复杂。对于疏浚施工企业来说技术水平的高低已经成为直接关系到企业生存发展的重要课题。固液两相流动技术研究是疏浚技术中重要的部分,是疏浚工程中的核心技术，决定了生产效率、工程进度安排和工程成本。固液两相流动技术是一项基于半理论半经验的技术，其研究的成果严重的依赖于实验测试技术。建立高精度固液两相流动测试系统是开展固液两相流动技术的重要基础。固液两相流动特性测试中管道内的流动一直是研究的重点，特别是倾斜管道内的测试一直是研究的重要组成部分。疏浚工程、矿山工程中固液两相流动系统的应用非常广泛，倾斜管道是整个固液两相流动系统中关键的部分，直接影响着整个系统的输送能力，是堵管发生的最危险部分。随着疏浚事业的发展，对疏浚精度和效率的要求越来越高。现有的技术无法进行可调整倾斜管道角度固液两相流动测试，存在一系列技术问题。At present, with the development of ports, waterways, water conservancy and coastal city construction, the engineering conditions involved in dredging enterprises are also more complicated. For dredging construction enterprises, the level of technology has become an important issue directly related to the survival and development of enterprises. The research on solid-liquid two-phase flow technology is an important part of dredging technology and the core technology in dredging engineering, which determines the production efficiency, project schedule and project cost. Solid-liquid two-phase flow technology is a technology based on semi-theory and semi-experience, and its research results are heavily dependent on experimental testing techniques. The establishment of a high-precision solid-liquid two-phase flow test system is an important basis for the development of solid-liquid two-phase flow technology. The flow in the pipeline has always been the focus of research in the test of the solid-liquid two-phase flow characteristics, especially the test in the inclined pipeline has always been an important part of the research. The solid-liquid two-phase flow system is widely used in dredging engineering and mining engineering. The inclined pipeline is a key part of the entire solid-liquid two-phase flow system, which directly affects the conveying capacity of the entire system and is the most dangerous part of pipe plugging. With the development of the dredging industry, the requirements for dredging precision and efficiency are getting higher and higher. Existing technology cannot perform solid-liquid two-phase flow test with adjustable inclined pipe angle, and there are a series of technical problems.
发明内容Contents of the invention
本发明为解决公知技术中存在的技术问题而提供一种可调整倾斜管道角度固液两相流动测试系统。The present invention provides a solid-liquid two-phase flow test system with an adjustable inclined pipeline angle to solve the technical problems in the known technology.
本发明的目的是提供一种可调整倾斜管道角度固液两相流动测试系统，为固液两相流动研究提供了倾斜管道内固液两相流动水力损失和压力变化测试、固液两相流动形态观察手段，具有能够有效地满足固液两相流动中管道固液两相流动特性研究的要求等特点的可调整倾斜管道角度固液两相流动测试系统。The purpose of the present invention is to provide a solid-liquid two-phase flow test system with adjustable angle of inclined pipeline, which provides hydraulic loss and pressure change test of solid-liquid two-phase flow in inclined pipeline and solid-liquid two-phase flow test for solid-liquid two-phase flow research. Morphological observation means, with the characteristics of being able to effectively meet the requirements of the solid-liquid two-phase flow characteristics of the pipeline in the solid-liquid two-phase flow, the solid-liquid two-phase flow test system with adjustable angle of inclined pipeline.
本发明是通过以下技术方案实现的，本发明包括固定管道、固体颗粒投入系统、泥泵及驱动系统、进口柔性弯头、透明玻璃管、进口压力表、倾斜测试管道、出口压力表、出口柔性弯头、支撑架、升降液压缸、支持平台、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管。系统由固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式水力输送回路，通过泥泵及驱动系统的无级变转速实现管道内介质在预期的流速下流动，通过固体颗粒投入系统计量固体方量并将固体颗粒投放到固定管道中，实现管道内介质的固体颗粒浓度在预期的值，水平延伸管下设置支持平台，支持平台下安装在升降液压缸的一端，升降液压缸另一端连接支撑架，支持平台安装在支撑架的竖直轨道中，在降液压缸的作用下竖直平移，达到倾斜管道角度连续变化，在此过程中进口柔性弯头、出口柔性弯头、柔性管道、转弯柔性弯头发生变形，保持在其他元件不变形的情况下闭式固液两相流动循环回路完整。倾斜测试管道的两端分别安装进口压力表和出口压力表，满足测量倾斜测试管道两端的压力。The present invention is achieved through the following technical solutions, the present invention includes fixed pipelines, solid particle input system, mud pump and drive system, inlet flexible elbow, transparent glass tube, inlet pressure gauge, inclined test pipeline, outlet pressure gauge, outlet flexible Elbows, support frames, lifting hydraulic cylinders, support platforms, rigid elbows, flexible pipes, turning flexible elbows, horizontal extension pipes. The system consists of fixed pipelines, mud pumps and drive systems, inlet flexible elbows, transparent glass pipes, inclined test pipes, outlet flexible elbows, rigid elbows, flexible pipes, turning flexible elbows, and horizontal extension pipes to form a closed hydraulic transmission circuit. , through the stepless variable speed of the mud pump and the driving system, the medium in the pipeline can flow at the expected flow rate, and the solid particle volume can be measured and put into the fixed pipeline through the solid particle input system, so as to realize the solid particle concentration of the medium in the pipeline At the expected value, a support platform is set under the horizontal extension pipe, and one end of the lifting hydraulic cylinder is installed under the support platform, and the other end of the lifting hydraulic cylinder is connected to the support frame. Under the action of vertical translation, the angle of the inclined pipe can be continuously changed. During this process, the inlet flexible elbow, outlet flexible elbow, flexible pipe, and turning flexible elbow are deformed, and the closed solid-liquid structure is kept under the condition that other components do not deform. The two-phase flow loop is complete. An inlet pressure gauge and an outlet pressure gauge are respectively installed at both ends of the inclined test pipe to meet the pressure measurement at both ends of the inclined test pipe.
本发明的测试过程通过以下方案实现，在固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式水力输送回路中注满测试用的液体，在固体颗粒投入系统中装载测试用的固体颗粒，启动泥泵并调整转速，使闭式水力输送回路中的流速达到合适的数值，开启固体颗粒投入系统阀门，固体颗粒依靠重力和液体流动的吸力进入由固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式水力输送回路，投入的固体颗粒量达到预计数值后关闭固体颗粒投入系统阀门，保持固液两相流动持续稳定。采集进口压力表和出口压力表的压力数据，通过透明玻璃管观察管道内部流动型态。压力数据采集和内部流动型态观察结束后，调整泥泵及驱动系统的泥泵转速实现管道中固液两相流动流速调整，测试其他流速情况下的结果。所有预期流速测试完成后，开启固体颗粒投入系统下端的阀门，继续投入固体颗粒，实现管道中固液两相流动固体颗粒浓度调整，测试其他固体颗粒浓度情况下的结果。上述测试过程完成后调整升降液压缸的行程，完成倾斜测试管道角度变化，重复上述测试过程。The test process of the present invention is realized through the following schemes, in fixed pipelines, mud pumps and drive systems, inlet flexible elbows, transparent glass tubes, inclined test pipelines, outlet flexible elbows, rigid elbows, flexible pipelines, turning flexible elbows, The horizontal extension pipe forms a closed hydraulic conveying circuit and fills it with liquid for testing, loads solid particles into the system for testing solid particles, starts the mud pump and adjusts the speed to make the flow rate in the closed hydraulic conveying circuit reach a suitable value , open the valve of the solid particle input system, solid particles rely on gravity and the suction of liquid flow into the fixed pipeline, mud pump and drive system, inlet flexible elbow, transparent glass tube, inclined test pipe, outlet flexible elbow, rigid elbow, Flexible pipes, flexible elbows with turns, and horizontal extension pipes form a closed hydraulic conveying circuit. After the amount of solid particles input reaches the expected value, the valve of the solid particle input system is closed to maintain continuous and stable solid-liquid two-phase flow. Collect the pressure data of the inlet pressure gauge and the outlet pressure gauge, and observe the flow pattern inside the pipeline through the transparent glass tube. After pressure data collection and observation of internal flow patterns, adjust the speed of the mud pump and the mud pump of the drive system to adjust the flow velocity of the solid-liquid two-phase flow in the pipeline, and test the results under other flow velocities. After all the expected flow rate tests are completed, open the valve at the lower end of the solid particle input system, and continue to input solid particles to realize the adjustment of the solid particle concentration in the solid-liquid two-phase flow in the pipeline, and test the results of other solid particle concentrations. After the above test process is completed, adjust the stroke of the lifting hydraulic cylinder, complete the angle change of the inclined test pipeline, and repeat the above test process.
本发明可调整倾斜管道角度固液两相流动测试系统所采取的技术方案是：The technical solution adopted by the solid-liquid two-phase flow testing system for the adjustable inclined pipeline angle of the present invention is:
一种可调整倾斜管道角度固液两相流动测试系统，其特点是：可调整倾斜管道角度固液两相流动测试系统由固定管道、固体颗粒投入系统、泥泵、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、可调支持平台、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成，固定管道、泥泵、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式固液两相流动循环回路，固定管道上方设置固体颗粒投入系统，水平延伸管下设置支持平台，支持平台下安装升降液压缸进行支持平台升降调节。A solid-liquid two-phase flow test system with an adjustable inclined pipeline angle, which is characterized in that the solid-liquid two-phase flow test system with an adjustable inclined pipeline angle consists of a fixed pipeline, a solid particle input system, a mud pump, an imported flexible elbow, and a transparent glass Pipe, inclined test pipe, outlet flexible elbow, adjustable support platform, rigid elbow, flexible pipe, turning flexible elbow, horizontal extension pipe, fixed pipe, mud pump, inlet flexible elbow, transparent glass pipe, inclined test Pipes, outlet flexible elbows, rigid elbows, flexible pipes, turning flexible elbows, and horizontal extension pipes form a closed solid-liquid two-phase flow circulation loop. A solid particle input system is set above the fixed pipes, and a support platform is set under the horizontal extension pipes. The lifting hydraulic cylinder is installed under the supporting platform to adjust the lifting of the supporting platform.
本发明可调整倾斜管道角度固液两相流动测试系统还可以采用如下技术方案：The solid-liquid two-phase flow testing system with adjustable inclined pipeline angle of the present invention can also adopt the following technical solutions:
所述的可调整倾斜管道角度固液两相流动测试系统，其特点是：倾斜测试管道前端设置进口压力表，后端设置出口压力表。The angle-adjustable solid-liquid two-phase flow test system of the inclined pipe is characterized in that: the front end of the inclined test pipe is provided with an inlet pressure gauge, and the rear end is provided with an outlet pressure gauge.
所述的可调整倾斜管道角度固液两相流动测试系统，其特点是：支持平台下安装在升降液压缸一端，升降液压缸另一端连接有支撑架，支持平台安装在支撑架的竖直轨道中，实现降液压缸竖直平移。The test system for solid-liquid two-phase flow with adjustable inclined pipeline angle is characterized in that: one end of the lifting hydraulic cylinder is installed under the support platform, the other end of the lifting hydraulic cylinder is connected with a support frame, and the support platform is installed on the vertical track of the support frame , the vertical translation of the hydraulic cylinder is realized.
所述的可调整倾斜管道角度固液两相流动测试系统，其特点是：通过泥泵直接连接的驱动电机变频实现无级调速，调整泥泵转速实现固液两相流动速度连续变化。The test system for solid-liquid two-phase flow with adjustable inclined pipeline angle is characterized in that stepless speed regulation is realized through frequency conversion of the driving motor directly connected to the mud pump, and the speed of solid-liquid two-phase flow can be continuously changed by adjusting the speed of the mud pump.
所述的可调整倾斜管道角度固液两相流动测试系统，其特点是：透明玻璃管截面为圆形有机玻璃管，两侧安装有钢制法兰，通过钢制法兰与进口柔性弯头和倾斜测试管道连接。The test system for solid-liquid two-phase flow with adjustable inclined pipe angle is characterized in that: the cross-section of the transparent glass tube is a circular plexiglass tube, and steel flanges are installed on both sides, and the steel flange is connected with the imported flexible elbow Connect to inclined test pipe.
所述的可调整倾斜管道角度固液两相流动测试系统，其特点是：固体颗粒投入系统呈倒园锥形，下端与固定管道通过钢管连接，此连接处设置控制固体颗粒投入速度用的阀门，进行固体颗粒方量计量投放。The test system for solid-liquid two-phase flow with an adjustable inclined pipeline angle is characterized in that: the solid particle input system is in an inverted cone shape, and the lower end is connected to the fixed pipeline through a steel pipe, and a valve for controlling the input speed of solid particles is set at this connection , Carry out solid particle volume metering and delivery.
本发明具有的优点和积极效果是：The advantages and positive effects that the present invention has are:
可调整倾斜管道角度固液两相流动测试系统由于采用了本发明全新的技术方案，与现有技术相比，本发明能够完成固液两相流动中倾斜管道内的流动特性测试和固体颗粒运动型态观察，提供固液两相流动机理研究的条件，使固液两相流动研究更精确、高效。Adjustable inclined pipe angle solid-liquid two-phase flow test system Due to the adoption of the new technical solution of the present invention, compared with the prior art, the present invention can complete the flow characteristic test and solid particle movement in the inclined pipe in the solid-liquid two-phase flow Type observation provides conditions for the study of solid-liquid two-phase flow mechanism, making the study of solid-liquid two-phase flow more accurate and efficient.
附图说明Description of drawings
图1是本发明可调整倾斜管道角度固液两相流动测试系统结构示意图；Fig. 1 is a schematic structural diagram of the solid-liquid two-phase flow test system of the present invention that can adjust the angle of the inclined pipeline;
图2是图1的正视结构示意图；Fig. 2 is a front view structural schematic diagram of Fig. 1;
图3是图1的侧视结构示意图。FIG. 3 is a schematic side view of the structure of FIG. 1 .
图中，1、固定管道，2、固体颗粒投入系统，3、泥泵及驱动系统，4、进口柔性弯头，5、透明玻璃管，6、进口压力表，7、倾斜测试管道，8、出口压力表，9、出口柔性弯头，10、支撑架，11、升降液压缸，12、支持平台，13、刚性弯，14、柔性管道，15、转弯柔性弯头，16、水平延伸管。In the figure, 1. Fixed pipeline, 2. Solid particle input system, 3. Sludge pump and drive system, 4. Imported flexible elbow, 5. Transparent glass tube, 6. Imported pressure gauge, 7. Inclined test pipe, 8. Outlet pressure gauge, 9, outlet flexible elbow, 10, support frame, 11, lifting hydraulic cylinder, 12, support platform, 13, rigid bend, 14, flexible pipe, 15, turning flexible elbow, 16, horizontal extension pipe.
具体实施方式detailed description
为能进一步了解本发明的发明内容、特点及功效，兹例举以下实施例，并配合附图详细说明如下：In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
实施例1Example 1
一种可调整倾斜管道角度固液两相流动测试系统，由固定管道、固体颗粒投入系统、泥泵及驱动系统、进口柔性弯头、透明玻璃管、进口压力表、倾斜测试管道、出口压力表、出口柔性弯头、支撑架、升降液压缸、支持平台、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成，固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式固液两相流动循环回路，固定管道上方设置固体颗粒投入系统，水平延伸管下设置支持平台，支持平台下安装升降液压缸的一端，升降液压缸另一端连接支撑架，支持平台安装在支撑架的竖直轨道中，在降液压缸的作用下竖直平移，倾斜测试管道的两端分别安装进口压力表和出口压力表。A test system for solid-liquid two-phase flow with an adjustable inclined pipeline angle, which consists of a fixed pipeline, a solid particle input system, a mud pump and a driving system, an inlet flexible elbow, a transparent glass tube, an inlet pressure gauge, an inclined test pipeline, and an outlet pressure gauge , Outlet flexible elbow, support frame, lifting hydraulic cylinder, support platform, rigid elbow, flexible pipe, turning flexible elbow, horizontal extension pipe, fixed pipe, mud pump and driving system, imported flexible elbow, transparent glass pipe , inclined test pipe, outlet flexible elbow, rigid elbow, flexible pipe, turning flexible elbow, and horizontal extension pipe form a closed solid-liquid two-phase flow circulation loop. The solid particle input system is set above the fixed pipe, and the horizontal extension pipe is set Support the platform, install one end of the lifting hydraulic cylinder under the supporting platform, and connect the other end of the lifting hydraulic cylinder to the support frame. Install inlet pressure gauge and outlet pressure gauge respectively.
泥泵及驱动系统具有无级调速功能，通过调整泥泵转速实现固液两相流动速度连续变化。透明玻璃管截面为圆形，材料采用高强度有机玻璃，两侧安装有钢制法兰，通过钢制法兰与进口柔性弯头和倾斜测试管道连接。The mud pump and driving system have the function of stepless speed regulation, and the continuous change of the solid-liquid two-phase flow speed can be realized by adjusting the speed of the mud pump. The cross-section of the transparent glass tube is circular, and the material is made of high-strength plexiglass. Steel flanges are installed on both sides, and are connected with imported flexible elbows and inclined test pipes through steel flanges.
固体颗粒投入系统呈倒园锥形，下端与固定管道通过钢管连接，此连接处设置控制固体颗粒投入速度用的阀门，具有固体颗粒方量计量投放的能力。倾斜测试管道两端分别安装进口压力表和出口压力表，倾斜测试管道内的介质可以通过进口压力表和出口压力表下端的管道到达进口压力表和出口压力表内部。支持平台在升降液压缸的作用下能上下平行移动，在此过程中进口柔性弯头、出口柔性弯头、柔性管道、转弯柔性弯头发生变形，保持在其他元件不变形的情况下闭式固液两相流动循环回路完整。The solid particle input system is in the shape of an inverted cone, and the lower end is connected to the fixed pipe through a steel pipe. A valve for controlling the input speed of solid particles is installed at this connection, which has the ability to measure and release solid particles. An inlet pressure gauge and an outlet pressure gauge are respectively installed at both ends of the inclined test pipe, and the medium in the inclined test pipe can reach the interior of the inlet pressure gauge and the outlet pressure gauge through the pipes at the lower ends of the inlet pressure gauge and the outlet pressure gauge. The support platform can move up and down in parallel under the action of the lifting hydraulic cylinder. During this process, the inlet flexible elbow, outlet flexible elbow, flexible pipe, and turning flexible elbow are deformed, and the closed solid The liquid two-phase flow circulation loop is complete.
本实施例的具体结构和实施过程：Concrete structure and implementation process of this embodiment:
参照附图1、图2和图3。With reference to accompanying drawing 1, Fig. 2 and Fig. 3.
本实施例为固定管道和透明玻璃管直径为450mm的系统。可调整倾斜管道角度固液两相流动测试系统由固定管道1、固体颗粒投入系统2、泥泵及驱动系统3、进口柔性弯头4、透明玻璃管5、进口压力表6、倾斜测试管道7、出口压力表8、出口柔性弯头9、支撑架10、升降液压缸11、支持平台12、刚性弯头13、柔性管道14、转弯柔性弯头15、水平延伸管16组成。This embodiment is a system in which the diameter of the fixed pipeline and the transparent glass tube is 450 mm. Adjustable inclined pipe angle solid-liquid two-phase flow test system consists of fixed pipe 1, solid particle input system 2, mud pump and drive system 3, imported flexible elbow 4, transparent glass pipe 5, imported pressure gauge 6, inclined test pipe 7 , outlet pressure gauge 8, outlet flexible elbow 9, support frame 10, lifting hydraulic cylinder 11, support platform 12, rigid elbow 13, flexible pipe 14, turning flexible elbow 15, and horizontal extension pipe 16.
①固定管道1由直径450mm钢管制作，管道分段设计，通过法兰连接在一起。①The fixed pipeline 1 is made of steel pipe with a diameter of 450mm, and the pipeline is designed in sections and connected together by flanges.
②固体颗粒投入系统2由1cm厚钢板制成整体筒体，下端连接公称直径450mm的电动闸板阀门。②The solid particle input system 2 is made of a 1cm thick steel plate as an integral cylinder, and the lower end is connected to an electric gate valve with a nominal diameter of 450mm.
③泥泵及驱动系统3由进口直径450mm的泥泵和1000kW的西门子交流电机组成。③Mud pump and drive system 3 consists of a mud pump with an inlet diameter of 450mm and a 1000kW Siemens AC motor.
④进口柔性弯头4、出口柔性弯头9和转弯柔性弯头15采用公称直径为450mm的钢制球形接头。④Inlet flexible elbow 4, outlet flexible elbow 9 and turning flexible elbow 15 adopt steel ball joints with a nominal diameter of 450mm.
⑤透明玻璃管5由厚度40mm的有机玻璃制作主体段，两侧安装钢制法兰。⑤The transparent glass tube 5 is made of plexiglass with a thickness of 40mm to make the main section, and steel flanges are installed on both sides.
⑥进口压力表6和出口压力表8采用ROSEMOUNT压力表。⑥Inlet pressure gauge 6 and outlet pressure gauge 8 adopt ROSEMOUNT pressure gauge.
⑦倾斜测试管道7采用公称直径450mm钢管制作，两端设置按照压力表的安装接口。⑦ The inclined test pipe 7 is made of a steel pipe with a nominal diameter of 450mm, and the two ends are set according to the installation interface of the pressure gauge.
⑧支撑架10采用角钢焊接桁架结构。⑧ The support frame 10 adopts an angle steel welded truss structure.
⑨柔性管道14采用直径为450mm的铠装橡胶管。⑨ The flexible pipe 14 is an armored rubber pipe with a diameter of 450 mm.
本实施例实际测试时，在固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式水力输送回路中注满测试用的液体，在固体颗粒投入系统中装载测试用的固体颗粒，启动泥泵并调整转速，使闭式水力输送回路中的流速达到合适的数值，开启固体颗粒投入系统阀门，固体颗粒依靠重力和液体流动的吸力进入由固定管道、泥泵及驱动系统、进口柔性弯头、透明玻璃管、倾斜测试管道、出口柔性弯头、刚性弯头、柔性管道、转弯柔性弯头、水平延伸管组成闭式水力输送回路，投入的固体颗粒量达到预计数值后关闭固体颗粒投入系统阀门，保持固液两相流动持续稳定。采集进口压力表和出口压力表的压力数据，通过透明玻璃管观察管道内部流动型态。压力数据采集和内部流动型态观察结束后，调整泥泵及驱动系统的泥泵转速实现管道中固液两相流动流速调整，测试其他流速情况下的结果。所有预期流速测试完成后，开启固体颗粒投入系统下端的阀门，继续投入固体颗粒，实现管道中固液两相流动固体颗粒浓度调整，测试其他固体颗粒浓度情况下的结果。上述测试过程完成后调整升降液压缸的行程，完成倾斜测试管道角度变化，重复上述测试过程。During the actual test of this embodiment, the fixed pipeline, the mud pump and the driving system, the inlet flexible elbow, the transparent glass tube, the inclined test pipeline, the outlet flexible elbow, the rigid elbow, the flexible pipeline, the turning flexible elbow, and the horizontal extension pipe Fill the liquid for testing into the closed hydraulic conveying circuit, load the solid particles for testing into the solid particle input system, start the mud pump and adjust the speed, so that the flow rate in the closed hydraulic conveying circuit reaches an appropriate value, and turn on the solid Particles are put into the system valve, and solid particles rely on gravity and suction of liquid flow to enter the fixed pipe, mud pump and drive system, inlet flexible elbow, transparent glass pipe, inclined test pipe, outlet flexible elbow, rigid elbow, flexible pipe, Turning flexible elbows and horizontal extension pipes form a closed hydraulic conveying circuit. After the amount of solid particles input reaches the expected value, the valve of the solid particle input system is closed to maintain continuous and stable solid-liquid two-phase flow. Collect the pressure data of the inlet pressure gauge and the outlet pressure gauge, and observe the flow pattern inside the pipeline through the transparent glass tube. After pressure data collection and observation of internal flow patterns, adjust the speed of the mud pump and the mud pump of the drive system to adjust the flow velocity of the solid-liquid two-phase flow in the pipeline, and test the results under other flow velocities. After all the expected flow rate tests are completed, open the valve at the lower end of the solid particle input system, and continue to input solid particles to realize the adjustment of the solid particle concentration in the solid-liquid two-phase flow in the pipeline, and test the results of other solid particle concentrations. After the above test process is completed, adjust the stroke of the lifting hydraulic cylinder, complete the angle change of the inclined test pipeline, and repeat the above test process.
本实施例实现精确测试倾斜管道中固液两相流动水力特性，并能直接观察倾斜管道中两相流动状态，测试过程中不用停机倾斜管道角度即可快速连续变动，具有测试不同倾斜角度管道中固液两相流动的水力损失和压力变化、观察不同倾斜角度管道中固液两相流动形态等功能。本实施例可提供一种固液两相流动机理研究的平台，能应用于固液两相流动水力特性和内部状态的深入研究。This embodiment can accurately test the hydraulic characteristics of the solid-liquid two-phase flow in the inclined pipeline, and can directly observe the two-phase flow state in the inclined pipeline. During the test, the angle of the inclined pipeline can be changed rapidly and continuously without stopping the machine. Functions such as hydraulic loss and pressure change of solid-liquid two-phase flow, observation of solid-liquid two-phase flow patterns in pipelines with different inclination angles, etc. This embodiment can provide a platform for studying the mechanism of solid-liquid two-phase flow, which can be applied to in-depth research on the hydraulic characteristics and internal state of solid-liquid two-phase flow.
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