WO2023178960A1 - Experimental apparatus for studying incipient motion and scouring rate of urban sewage sediments - Google Patents

Experimental apparatus for studying incipient motion and scouring rate of urban sewage sediments Download PDF

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Publication number
WO2023178960A1
WO2023178960A1 PCT/CN2022/120464 CN2022120464W WO2023178960A1 WO 2023178960 A1 WO2023178960 A1 WO 2023178960A1 CN 2022120464 W CN2022120464 W CN 2022120464W WO 2023178960 A1 WO2023178960 A1 WO 2023178960A1
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experimental
urban sewage
studying
starting
pool
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PCT/CN2022/120464
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French (fr)
Chinese (zh)
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陈燕平
周艳
王涛
闵红平
汪小东
霍培书
张利娜
龚杰
汤丁丁
赵皇
蒋睿
石克富
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中建三局绿色产业投资有限公司
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Publication of WO2023178960A1 publication Critical patent/WO2023178960A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels

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  • the invention relates to the technical field of urban sewage particle sediment research, and in particular to an experimental device for studying the starting and flushing rates of urban sewage sediment under periodic speed changes.
  • urban pipe networks are most commonly large-diameter circular pipes. After being filtered by the sewage treatment station, although large-sized urban sewage particles are filtered out, they are still There are suspended particles ranging from tens to hundreds of microns remaining in the municipal sewage pipe network. These suspended particles in urban sewage will change periodically with rain or urban water flow in the urban pipe network. During this periodicity, Under the influence of speed, suspended particles in sewage in urban pipe networks will settle and accumulate, forming urban sewage sediment. In order to prevent urban sewage sediment from forming blockage, it is necessary to explore the starting flow rate and flushing rate of urban sewage sediment under different periodic speed changes, so as to play a certain role in the protection of the urban sewage pipe network.
  • the utility model patent with the authorization announcement number CN 215405856 U discloses a model sand deposition and scouring start test device, which includes: a sand sample consolidation device, including a collection box, and a consolidated model is deposited in the collection box Sand;
  • the consolidated sand starting test tank includes: a tank body, which has a water inlet hole upstream, a water outlet hole downstream, and a sand spreading tank for installing the collection box in the middle stream; an image acquisition device, arranged in Above the water tank body, it is used to collect images or videos of the flushing start of the consolidated model sand in the collection box.
  • the test device requires the use of video storage tools and observation to obtain results. The test equipment is complex and the results are not intuitive.
  • the application for an invention patent with publication number CN 106324215 A discloses a sediment scouring start measurement system that can be used in laboratories and tidal flat sites at the same time, including a connected control end and a measurement end; wherein the measurement end includes a cylinder A reactor with a like structure and a profile flow meter, turbidity sensor and transmission device located in the reactor. The profile flow meter and turbidity sensor are respectively connected to the control end.
  • the transmission device includes a motor, a connecting column and a rotating paddle,
  • the motor and the propeller are connected through a connecting column;
  • the top of the reactor is provided with a cover plate, and the motor is fixed on the cover plate;
  • the center of the bottom of the reactor is provided with an isolation tank, and the top of the isolation tank is provided with a
  • the tank covers are connected to each other, and the side walls of the reactor are respectively provided with water inlet valves and water outlet valves.
  • the bottom of the reactor is connected to the bottom plate or to the annular extended support plate.
  • the purpose of the present invention is to provide an experimental device for studying the starting and flushing rates of urban sewage sediments to solve the lack of specialized experimental equipment in the existing technology to conveniently study the behavior of suspended particles in urban sewage under periodic velocity changes.
  • the starting rule and flushing rate can also shorten the experimental period and quickly and directly obtain the core parameters that affect the siltation of the urban sewage pipe network.
  • the present invention provides an experimental device for studying the starting and flushing rate of urban sewage sediments, which is characterized in that it includes a circulating pump, an experimental pool containing experimental water inside, and an experimental apparatus connected to the experimental pool.
  • One end of the circulating water tank is connected to the circulating water tank, and the two ends of the circulating pump are connected to the other end of the experimental pool and the circulating water tank respectively, and are used to drive the experimental water between the circulating pump, the experimental pool and the circulating water tank.
  • Circular flow is carried out between the circulating water tanks; a sandbox for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate are provided in the experimental pool, so that the urban sewage sediment inside the sandbox The sample is started and flushed under the action of the rotating device.
  • the rotating device includes a rotating blade at least partially disposed in the experimental water and a first rotating structure for driving the rotating blade to rotate.
  • the first rotating structure is a motor, used to drive the tip of the rotating blade to produce periodic speed changes.
  • a filter plate is provided in the experimental pool perpendicular to the direction of water flow, and a number of holes are provided on the filter plate for rectification and filtration.
  • two guide rails are arranged parallel to the water flow direction in the experimental pool, and slide blocks are provided on the guide rails.
  • the sandbox slides freely on the guide rails through the slide blocks.
  • the sandbox is detachably connected to the guide rail.
  • the sandbox is provided with a rectangular expansion plate for observing the flow pattern of urban sewage particulate matter samples.
  • a collection tank is provided at the edge of the bottom of the circulating water tank for collecting sewage sediment.
  • the sandbox is located directly below the rotating blade.
  • the present invention circulates the experimental water by connecting the circulating pump to the experimental pool and the circulating water tank, so that the experimental water circulates between the circulating pump, the experimental pool and the circulating water tank; on this basis, the present invention sets a rotating device in the experimental pool, It can further regulate the water flow speed in the experimental pool and form a cyclic flushing effect inside the experimental pool; at the same time, the present invention puts the sandbox containing urban sewage sediment samples into the experimental pool, and then utilizes the circulation of the experimental pool.
  • the scouring effect allows the urban sewage sediment samples placed in the sandbox to be effectively started and flushed.
  • Figure 1 is a schematic structural diagram of an experimental device used to study the initiation and flushing rate of urban sewage sediment provided by the present invention.
  • Figure 2 is a schematic structural diagram of the experimental pool in the experimental device used to study the initiation and flushing rate of urban sewage sediment provided by the present invention.
  • Figure 3 is a schematic structural diagram of the combination of a sandbox and a guide rail in an experimental device for studying the starting and flushing rates of urban sewage sediments provided by the present invention.
  • Figure 4 is a schematic structural diagram of the circulating water tank in the experimental device used to study the starting and flushing rates of urban sewage sediments.
  • 1-Water inlet pipeline 2-Experimental pool; 3-Filter plate; 4-Guide rail; 5-Rotating blade; 6-First rotating structure; 7-Sandbox; 8-Hose outlet; 9-Circulating pump; 10- Circulating water tank; 11-filter blade; 12-collection tank.
  • the experimental device provided by the present invention for studying the starting and flushing rates of urban sewage sediments includes an experimental pool, a circulating pump and a circulating water tank.
  • the experimental pool 2 contains experimental water.
  • the outlet end of the experimental pool 2 is connected to the circulating water tank 10.
  • the two ends of the circulating pump 9 are respectively connected to the experimental pool 2.
  • the water inlet end is connected with the circulating water tank 10 and is used to drive the experimental water to circulate among the circulating pump 9 , the experimental pool 2 and the circulating water tank 10 .
  • Figure 2 Please refer to Figure 2.
  • the experimental pool 2 is provided with a sandbox 7 for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate, so that the urban sewage sediment inside the sandbox 7 can The sample is started and flushed under the action of the rotating device.
  • the experimental device provided by the present invention for studying the starting and flushing rate of urban sewage sediment can form a cyclic flushing effect in the experimental pool, allowing the urban sewage sediment sample placed in the sandbox to effectively start and scouring, in order to study the starting flow rate and scouring rate, which is of great significance for protecting the urban sewage pipe network and preventing siltation and blockage.
  • the rotating device includes a rotating blade 5 at least partially disposed in the experimental water and a first rotating structure 6 for driving the rotating blade 5 to rotate.
  • the first rotating mechanism 6 is a servo motor that facilitates control of rotational speed, and is used to drive the tip of the rotating blade 5 to produce periodic speed changes, so that the water flow speed in the experimental pool 2 is Periodic changes; in other embodiments of the present invention, the first rotating mechanism 6 can be other types of driving devices, which can cause the blade tips of the rotating blades 5 to produce periodic speed changes.
  • the experimental pool 2 is a rectangular parallelepiped with an open top, and the circulation pump 9 is connected to one end of the experimental pool 2 through the water inlet pipeline 1 .
  • a filter plate 3 is provided inside the experimental pool 2, close to one end of the water inlet pipeline 1, in a filter plate 3 is provided in a direction perpendicular to the water flow. A number of holes are evenly provided on the filter plate, which not only can achieve rectification, but also can Municipal sewage sediments are filtered.
  • a hose outlet 8 is provided at one end of the experimental pool 2 away from the water inlet pipeline 1. The hose outlet 8 is connected to the circulating water tank 10 through a hose to realize the outflow of the water body driven by the rotating blade 5.
  • the bottom of the experimental pool is provided with two guide rails 4 in parallel along the direction of water flow. Sliders are provided on the guide rails 4.
  • the sandbox 7 is placed on the guide rails through the sliders. 4. Slide freely. Moreover, the sandbox 7 is detachably connected to the guide rail 4, and the sandbox 7 can move freely on the guide rail 4 and detach from the guide rail 4, and the sandbox 7 can be removed and filled freely.
  • the urban sewage sediment sample can then be placed on the guide rail 4 to move freely.
  • the circulating water tank is columnar, and filter blades 11 are provided inside the circulating water tank 10.
  • the filter blades 11 are centered on the central axis of the circulating water tank 10.
  • a collection tank 12 is also provided at the bottom edge of the circulating water tank 10 .
  • the filter blades 11 are evenly provided with a plurality of small holes. Through the obstruction caused by the small holes, the sediment samples in the experimental water body can be decelerated, and the suspended particles in the water are continuously collected through the collection tank 12 in the circulating water tank 10. Under the action of the filter blades 11, the fluid in the water will rotate, and most of the fluid will pass through the small holes on the filter blades 11. However, the sediment in the water body will be slowly blocked by the filter blades to the collection.
  • Tank 12 effectively filters sediments in the water body.
  • the flushing rate can be directly calculated by converting the mass difference of the sandbox 7 before and after flushing into the flushing height of the sample. Then, by changing the urban sewage particle gradation, the rotation speed of the rotating device, the distance between the sandbox and the rotating blades, etc., and using the experimental principle of the controlled variable method, the relationship between each factor, the scour rate, and the starting flow rate can be obtained.
  • the present invention provides an experimental device for studying the starting and flushing rate of urban sewage sediments, including a circulation pump, an experimental pool filled with experimental water inside, and an experimental device connected to one end of the experimental pool.
  • a circulating water tank Both ends of the circulating pump are connected to the other end of the experimental pool and the circulating water tank respectively, and are used to drive the experimental water between the circulating pump, the experimental pool and the circulating water tank.
  • the experimental pool is provided with a sandbox for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate, so that the urban sewage sediment samples inside the sandbox are rotated in the Starting and flushing are carried out under the action of the device.

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Abstract

The present invention provides an experimental apparatus for studying an incipient motion and scouring rate of urban sewage sediments, comprising a circulating pump, an experimental water pool filled with experimental water, and a circulating water tank communicated with one end of the experimental water pool. Two ends of the circulating pump are communicated with the other end of the experimental water pool and the circulating water tank, respectively, for driving the experimental water to circularly flow among the circulating pump, the experimental water pool, and the circulating water tank; a sand tank used for accommodating an urban sewage sediment sample and a rotating apparatus used for adjusting the water flow rate are provided in the experimental water tank, such that the urban sewage sediment sample in the sand tank is subjected to incipient motion and scoured under the effect of the rotating apparatus. By means of the mode, the incipient motion and scouring rate of the urban sewage sediment sample under the effect of different time average velocities can be obtained, and a good study effect on sedimentation of urban sewage pipelines is achieved.

Description

用于研究城市污水沉淀物的起动与冲刷率的实验装置Experimental device for studying the initiation and flushing rates of urban sewage sediments 技术领域Technical field
本发明涉及城市污水颗粒沉淀物研究技术领域，尤其涉及一种用于研究城市污水沉淀物在周期速度变化下的起动与冲刷率的实验装置。The invention relates to the technical field of urban sewage particle sediment research, and in particular to an experimental device for studying the starting and flushing rates of urban sewage sediment under periodic speed changes.
背景技术Background technique
城市管网作为运输和储存城市污水的最主要的基础设施，其最常见的是大直径的圆形管道，通过污水处理站的过滤之后，虽然大粒径的城市污水颗粒物被过滤掉，但是还是存在几十到几百微米不等的悬浮颗粒物留存在市政污水管网中，这些城市污水悬浮颗粒物，在城市管网中会随着下雨或者城市用水流量呈现周期性的变化，在这个周期性速度的影响下，城市管网中污水悬浮颗粒物会出现沉降堆积的现象，形成城市污水沉淀物。为了防止城市污水沉淀物形成淤堵，有必要在不同的周期的速度变化下，探究城市污水沉淀物的起动流速规律以及冲刷率，以便对城市污水管网的保护起到一定作用。As the most important infrastructure for transporting and storing urban sewage, urban pipe networks are most commonly large-diameter circular pipes. After being filtered by the sewage treatment station, although large-sized urban sewage particles are filtered out, they are still There are suspended particles ranging from tens to hundreds of microns remaining in the municipal sewage pipe network. These suspended particles in urban sewage will change periodically with rain or urban water flow in the urban pipe network. During this periodicity, Under the influence of speed, suspended particles in sewage in urban pipe networks will settle and accumulate, forming urban sewage sediment. In order to prevent urban sewage sediment from forming blockage, it is necessary to explore the starting flow rate and flushing rate of urban sewage sediment under different periodic speed changes, so as to play a certain role in the protection of the urban sewage pipe network.
授权公告号为CN 215405856 U的实用新型专利，公开了一种模型沙沉积及冲刷起动试验装置，其中，包括：沙样固结装置，包括收集盒，所述收集盒内沉积有固结的模型沙；固结沙起动试验水槽，包括：水槽本体，所述水槽本体的上游具有进水孔，下游具有出水孔，中游具有用于安装所述收集盒的铺沙槽；图像采集装置，布置在所述水槽本体上方，用于采集所述收集盒内的固结模型沙的冲刷起动图像或视频。所述试验装置需要借助视频存储工具，通过观察才能得出结果，试验设备复杂，结果不直观。The utility model patent with the authorization announcement number CN 215405856 U discloses a model sand deposition and scouring start test device, which includes: a sand sample consolidation device, including a collection box, and a consolidated model is deposited in the collection box Sand; the consolidated sand starting test tank includes: a tank body, which has a water inlet hole upstream, a water outlet hole downstream, and a sand spreading tank for installing the collection box in the middle stream; an image acquisition device, arranged in Above the water tank body, it is used to collect images or videos of the flushing start of the consolidated model sand in the collection box. The test device requires the use of video storage tools and observation to obtain results. The test equipment is complex and the results are not intuitive.
申请公布号为CN 106324215 A的发明专利，公开了一种可同时应用于实验室和潮滩现场的泥沙冲刷起动测量系统，包括相连接的控制端和测量端；其中，测量端包括呈筒状结构的反应器以及位于反应器内的剖面流速仪、浊度传感器和传动装置，所述剖面流速仪和浊度传感器分别与控制端连接，所 述传动装置包括电机、连接柱和转桨，所述电机与转桨通过连接柱传动连接；所述反应器顶部设有盖板，所述电机固定在盖板上；所述反应器底部中心设有隔离槽，所述隔离槽顶部设有与其相互配合连接的槽盖，所述反应器的侧壁上分别设有进水阀和出水阀，所述反应器底部连接底板或连接环形加长撑板。该发明对设备要求高，冲刷系数需要用浊度传感器得到，不利于推广应用。The application for an invention patent with publication number CN 106324215 A discloses a sediment scouring start measurement system that can be used in laboratories and tidal flat sites at the same time, including a connected control end and a measurement end; wherein the measurement end includes a cylinder A reactor with a like structure and a profile flow meter, turbidity sensor and transmission device located in the reactor. The profile flow meter and turbidity sensor are respectively connected to the control end. The transmission device includes a motor, a connecting column and a rotating paddle, The motor and the propeller are connected through a connecting column; the top of the reactor is provided with a cover plate, and the motor is fixed on the cover plate; the center of the bottom of the reactor is provided with an isolation tank, and the top of the isolation tank is provided with a The tank covers are connected to each other, and the side walls of the reactor are respectively provided with water inlet valves and water outlet valves. The bottom of the reactor is connected to the bottom plate or to the annular extended support plate. This invention has high equipment requirements, and the scour coefficient needs to be obtained with a turbidity sensor, which is not conducive to popularization and application.
并且，由于城市污水沉淀物的组成十分的复杂，上述专利针对的沙样与城市污水沉淀物存在较大差异，其实验装置并不能直接应用于城市污水沉淀物的研究，现在仍缺乏对于城市污水沉淀物在周期速度变化下的起动规律和冲刷率进行研究的专门实验设备，难以对城市污水管网进行有效保护。Moreover, because the composition of urban sewage sediment is very complex, the sand sample targeted by the above patent is quite different from that of urban sewage sediment, and its experimental device cannot be directly applied to the study of urban sewage sediment. There is still a lack of research on urban sewage sediment. It is difficult to effectively protect the urban sewage pipe network with special experimental equipment to study the starting law and flushing rate of sediments under periodic speed changes.
有鉴于此，有必要设计一种改进的用于研究城市污水沉淀物在周期速度变化下的起动与冲刷率的实验装置，以解决上述问题。In view of this, it is necessary to design an improved experimental device for studying the starting and flushing rates of urban sewage sediments under periodic speed changes to solve the above problems.
发明内容Contents of the invention
本发明的目的在于提供一种用于研究城市污水沉淀物的起动与冲刷率的实验装置，用以解决现有技术中缺乏专门的实验设备来方便地研究城市污水悬浮颗粒物在周期速度变化下的起动规律和冲刷率，还可以缩短实验周期，快速直接的得到影响城市污水管网淤堵的较为核心的参数。The purpose of the present invention is to provide an experimental device for studying the starting and flushing rates of urban sewage sediments to solve the lack of specialized experimental equipment in the existing technology to conveniently study the behavior of suspended particles in urban sewage under periodic velocity changes. The starting rule and flushing rate can also shorten the experimental period and quickly and directly obtain the core parameters that affect the siltation of the urban sewage pipe network.
为实现上述发明目的，本发明提供了一种用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于，包括循环泵、内部盛有实验水的实验水池以及与所述实验水池的一端相连通的循环水箱，所述循环泵的两端分别与所述实验水池的另一端和所述循环水箱相连通，用于驱动所述实验水在所述循环泵、所述实验水池和所述循环水箱之间进行循环流动；所述实验水池内设置有用于容纳城市污水沉淀物样品的沙箱以及用于调节水流速率的旋转装置，使所述沙箱内部的所述城市污水沉淀物样品在所述旋转装置的作用下进行起动和冲刷。In order to achieve the above-mentioned object of the invention, the present invention provides an experimental device for studying the starting and flushing rate of urban sewage sediments, which is characterized in that it includes a circulating pump, an experimental pool containing experimental water inside, and an experimental apparatus connected to the experimental pool. One end of the circulating water tank is connected to the circulating water tank, and the two ends of the circulating pump are connected to the other end of the experimental pool and the circulating water tank respectively, and are used to drive the experimental water between the circulating pump, the experimental pool and the circulating water tank. Circular flow is carried out between the circulating water tanks; a sandbox for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate are provided in the experimental pool, so that the urban sewage sediment inside the sandbox The sample is started and flushed under the action of the rotating device.
作为本发明的进一步改进，所述旋转装置包括至少部分设置于所述实验水中的旋转叶片和用于驱动所述旋转叶片转动的第一转动结构。As a further improvement of the present invention, the rotating device includes a rotating blade at least partially disposed in the experimental water and a first rotating structure for driving the rotating blade to rotate.
作为本发明的进一步改进，所述第一转动结构为电机，用于驱动所述旋转叶片的叶尖产生周期性速率变化。As a further improvement of the present invention, the first rotating structure is a motor, used to drive the tip of the rotating blade to produce periodic speed changes.
作为本发明的进一步改进，所述实验水池内沿垂直于水流方向设置有过滤板，所述过滤板上设置有若干孔洞，用于整流及过滤。As a further improvement of the present invention, a filter plate is provided in the experimental pool perpendicular to the direction of water flow, and a number of holes are provided on the filter plate for rectification and filtration.
作为本发明的进一步改进，所述实验水池内沿水流方向平行设置有两条导轨，所述导轨上设置有滑块，所述沙箱通过所述滑块在所述导轨上自由滑动。As a further improvement of the present invention, two guide rails are arranged parallel to the water flow direction in the experimental pool, and slide blocks are provided on the guide rails. The sandbox slides freely on the guide rails through the slide blocks.
作为本发明的进一步改进，所述沙箱与所述导轨可拆卸式连接。As a further improvement of the present invention, the sandbox is detachably connected to the guide rail.
作为本发明的进一步改进，所述沙箱上设置有矩形扩展板，用于观察城市污水颗粒物样品的流动形式As a further improvement of the present invention, the sandbox is provided with a rectangular expansion plate for observing the flow pattern of urban sewage particulate matter samples.
作为本发明的进一步改进，所述循环水箱底部的边缘处设置有收集槽，用于收集污水沉淀物。As a further improvement of the present invention, a collection tank is provided at the edge of the bottom of the circulating water tank for collecting sewage sediment.
作为本发明的进一步改进，所述沙箱位于所述旋转叶片的正下方。As a further improvement of the present invention, the sandbox is located directly below the rotating blade.
本发明的有益效果是：The beneficial effects of the present invention are:
1.本发明通过将循环泵连接实验水池和循环水箱进行循环，使实验用水在循环泵、实验水池和循环水箱之间循环流动；在此基础上，本发明通过在实验水池中设置旋转装置，能够进一步对实验水池中的水流速度进行调控，并在实验水池内部形成循环冲刷作用；同时，本发明通过将装有城市污水沉淀物样品的沙箱放入实验水池中，进而利用实验水池的循环冲刷作用，让放置在沙箱内的城市污水沉淀物样品进行有效的起动与冲刷。在实验水池的循环冲刷过程中，通过改变旋转装置的转速，便可以测量均匀周期变化的流速下，不同时均流速作用下城市污水沉淀物样品的起动流速规律与冲刷率，对于城市污水管道的淤积起到很好的研究作用。1. The present invention circulates the experimental water by connecting the circulating pump to the experimental pool and the circulating water tank, so that the experimental water circulates between the circulating pump, the experimental pool and the circulating water tank; on this basis, the present invention sets a rotating device in the experimental pool, It can further regulate the water flow speed in the experimental pool and form a cyclic flushing effect inside the experimental pool; at the same time, the present invention puts the sandbox containing urban sewage sediment samples into the experimental pool, and then utilizes the circulation of the experimental pool. The scouring effect allows the urban sewage sediment samples placed in the sandbox to be effectively started and flushed. During the cyclic flushing process of the experimental pool, by changing the rotation speed of the rotating device, it is possible to measure the starting flow rate and flushing rate of urban sewage sediment samples under uniform periodically changing flow rates and different time-averaged flow rates. For urban sewage pipes, Siltation plays a good role in research.
2.基于本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置，通过改变城市污水沉淀物的集配、旋转装置的旋转速度、沙箱距离旋转叶片的距离等参数就能够方便快捷地获得不同条件下城市污水悬浮颗粒物的起动规律和冲刷率的实验数据，进而获得各个因素与冲刷率以及起动流速之间的关系，从而通过较为简单的方式得到城市污水颗粒沉淀物的起动规律和冲刷率，用于 在实践中预防城市管网中颗粒物沉淀，保护城市污水管网，防止瘀堵。2. Based on the experimental device provided by the present invention for studying the starting and flushing rate of urban sewage sediments, it is convenient to change parameters such as the collection and distribution of urban sewage sediments, the rotation speed of the rotating device, and the distance between the sandbox and the rotating blades. Quickly obtain experimental data on the starting rule and flushing rate of urban sewage suspended particles under different conditions, and then obtain the relationship between each factor, the flushing rate and the starting flow rate, so as to obtain the starting rule of urban sewage particle sedimentation in a relatively simple way. and scour rate, used in practice to prevent the precipitation of particulate matter in urban pipe networks, protect urban sewage pipe networks, and prevent stasis and blockage.
附图说明Description of the drawings
图1为本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置的结构示意图。Figure 1 is a schematic structural diagram of an experimental device used to study the initiation and flushing rate of urban sewage sediment provided by the present invention.
图2为本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置中实验水池内的结构示意图。Figure 2 is a schematic structural diagram of the experimental pool in the experimental device used to study the initiation and flushing rate of urban sewage sediment provided by the present invention.
图3为本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置中沙箱与导轨结合的结构示意图。Figure 3 is a schematic structural diagram of the combination of a sandbox and a guide rail in an experimental device for studying the starting and flushing rates of urban sewage sediments provided by the present invention.
图4为用于研究城市污水沉淀物的起动与冲刷率的实验装置中循环水箱的结构示意图。Figure 4 is a schematic structural diagram of the circulating water tank in the experimental device used to study the starting and flushing rates of urban sewage sediments.
附图标记Reference signs
1-进水管线；2-实验水池；3-过滤板；4-导轨；5-旋转叶片；6-第一转动结构；7-沙箱；8-软管出口；9-循环泵；10-循环水箱；11-过滤叶片；12-收集槽。1-Water inlet pipeline; 2-Experimental pool; 3-Filter plate; 4-Guide rail; 5-Rotating blade; 6-First rotating structure; 7-Sandbox; 8-Hose outlet; 9-Circulating pump; 10- Circulating water tank; 11-filter blade; 12-collection tank.
具体实施方式Detailed ways
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the drawings and specific embodiments.
在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。Here, it should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the solution of the present invention are shown in the drawings, and the details related to the present invention are omitted. Invent other details that are less relevant.
另外，还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。Additionally, it should be noted that the terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also It also includes other elements not expressly listed or that are inherent to the process, method, article or equipment.
请参阅图1至图4所示，本发明提供的用于研究城市污水沉淀物的起动与 冲刷率的实验装置包括实验水池、循环泵和循环水箱。具体地，请参阅图1，所述实验水池2内部盛有实验水，所述实验水池2的出水端与循环水箱10相连通，所述循环泵9的两端分别与所述实验水池2的进水端和所述循环水箱10相连通，用于驱动所述实验水在所述循环泵9、所述实验水池2和所述循环水箱10之间进行循环流动。请参阅图2所示，所述实验水池2内设置有用于容纳城市污水沉淀物样品的沙箱7以及用于调节水流速率的旋转装置，使所述沙箱7内部的所述城市污水沉淀物样品在所述旋转装置的作用下进行起动和冲刷。Referring to Figures 1 to 4, the experimental device provided by the present invention for studying the starting and flushing rates of urban sewage sediments includes an experimental pool, a circulating pump and a circulating water tank. Specifically, please refer to Figure 1. The experimental pool 2 contains experimental water. The outlet end of the experimental pool 2 is connected to the circulating water tank 10. The two ends of the circulating pump 9 are respectively connected to the experimental pool 2. The water inlet end is connected with the circulating water tank 10 and is used to drive the experimental water to circulate among the circulating pump 9 , the experimental pool 2 and the circulating water tank 10 . Please refer to Figure 2. The experimental pool 2 is provided with a sandbox 7 for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate, so that the urban sewage sediment inside the sandbox 7 can The sample is started and flushed under the action of the rotating device.
通过上述设置方式，本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置能够在实验水池中形成循环冲刷作用，让放置在沙箱内的城市污水沉淀物样品进行有效的起动与冲刷，以便对其起动流速规律与冲刷率进行进行研究，对于保护城市污水管网、防止淤堵产生具有重要的意义。Through the above arrangement, the experimental device provided by the present invention for studying the starting and flushing rate of urban sewage sediment can form a cyclic flushing effect in the experimental pool, allowing the urban sewage sediment sample placed in the sandbox to effectively start and scouring, in order to study the starting flow rate and scouring rate, which is of great significance for protecting the urban sewage pipe network and preventing siltation and blockage.
更具体地，请参阅图2，所述旋转装置包括至少部分设置于所述实验水中的旋转叶片5和用于驱动所述旋转叶片5转动的第一转动结构6。在本发明的一个实施例中，所述第一转动机构6为便于控制转速的伺服电机，用于驱动所述旋转叶片5的叶尖产生周期性速率变化，使实验水池2中的水流速度呈周期性变化；在本发明的其他实施例中，该第一转动机构6可以是其他种类的驱动装置，使旋转叶片5的叶尖产生周期性速率变化即可。More specifically, please refer to Figure 2. The rotating device includes a rotating blade 5 at least partially disposed in the experimental water and a first rotating structure 6 for driving the rotating blade 5 to rotate. In one embodiment of the present invention, the first rotating mechanism 6 is a servo motor that facilitates control of rotational speed, and is used to drive the tip of the rotating blade 5 to produce periodic speed changes, so that the water flow speed in the experimental pool 2 is Periodic changes; in other embodiments of the present invention, the first rotating mechanism 6 can be other types of driving devices, which can cause the blade tips of the rotating blades 5 to produce periodic speed changes.
在本发明的一个实施例中，所述实验水池2为顶部开口的长方体，所述循环泵9通过进水管线1与所述实验水池2的一端相连通。在所述实验水池2内部靠近所述进水管线1的一端，沿垂直于水流的方向设置有过滤板3，所述过滤板上均匀设置有若干孔洞，不仅能实现整流的作用，还能够对城市污水沉淀物进行过滤。所述实验水池2上远离所述进水管线1的一端设置有软管出口8，所述软管出口8通过软管与所述循环水箱10连接，实现旋转叶片5所带动的水体的流出。In one embodiment of the present invention, the experimental pool 2 is a rectangular parallelepiped with an open top, and the circulation pump 9 is connected to one end of the experimental pool 2 through the water inlet pipeline 1 . Inside the experimental pool 2, close to one end of the water inlet pipeline 1, a filter plate 3 is provided in a direction perpendicular to the water flow. A number of holes are evenly provided on the filter plate, which not only can achieve rectification, but also can Municipal sewage sediments are filtered. A hose outlet 8 is provided at one end of the experimental pool 2 away from the water inlet pipeline 1. The hose outlet 8 is connected to the circulating water tank 10 through a hose to realize the outflow of the water body driven by the rotating blade 5.
请结合参阅图2、图3，所述实验水池的底部沿水流方向平行设置有两条导轨4，所述导轨4上设置有滑块，所述沙箱7通过所述滑块在所述导轨4上自由滑动。并且，所述沙箱7与所述导轨4是可拆卸式连接，所述沙箱7可以在所 述导轨4上自由运动而脱离所述导轨4，可以将所述沙箱7取下自由填充城市污水沉淀物样品，然后又可以放置在所述导轨4上自由运动。将所述沙箱7沿导轨4推动至所述旋转叶片5的正下方，即可使所述沙箱7内部的城市污水沉淀物样品通过所述旋转叶片5尖端的速度进行起动和冲刷。城市污水沉淀物样品能够在沙箱7中实现正常的添加和堆积，在所述沙箱7上还设置有矩形扩展板，用于观察城市污水沉淀物样品的流动形式。Please refer to Figure 2 and Figure 3. The bottom of the experimental pool is provided with two guide rails 4 in parallel along the direction of water flow. Sliders are provided on the guide rails 4. The sandbox 7 is placed on the guide rails through the sliders. 4. Slide freely. Moreover, the sandbox 7 is detachably connected to the guide rail 4, and the sandbox 7 can move freely on the guide rail 4 and detach from the guide rail 4, and the sandbox 7 can be removed and filled freely. The urban sewage sediment sample can then be placed on the guide rail 4 to move freely. Push the sandbox 7 along the guide rail 4 to just below the rotating blade 5 , so that the urban sewage sediment sample inside the sandbox 7 can be started and washed at the speed of the tip of the rotating blade 5 . Urban sewage sediment samples can be added and accumulated normally in the sandbox 7. A rectangular expansion plate is also provided on the sandbox 7 for observing the flow pattern of the urban sewage sediment samples.
请参阅图4，在本发明的一个实施例中，所述循环水箱呈柱状，在所述循环水箱10内部设置有过滤叶片11，所述过滤叶片11以所述循环水箱10的中轴线为中心呈扇叶状设置，在所述循环水箱10的底部边缘处还设置有收集槽12。所述过滤叶片11上均匀开设有多个小孔，通过小孔产生的阻碍，可以减速实验水体中的沉淀物样品，通过循环水箱10中的收集槽12来不断收集水中的悬浮颗粒物，在所述过滤叶片11的作用下，水中的流体会做旋转运动，大部分流体都会通过过滤叶片11上的小孔，但是水体中的沉淀物由于过滤叶片的阻隔，会被慢慢阻隔到所述收集槽12，有效过滤水体中的沉淀物。Please refer to Figure 4. In one embodiment of the present invention, the circulating water tank is columnar, and filter blades 11 are provided inside the circulating water tank 10. The filter blades 11 are centered on the central axis of the circulating water tank 10. Arranged in the shape of a fan blade, a collection tank 12 is also provided at the bottom edge of the circulating water tank 10 . The filter blades 11 are evenly provided with a plurality of small holes. Through the obstruction caused by the small holes, the sediment samples in the experimental water body can be decelerated, and the suspended particles in the water are continuously collected through the collection tank 12 in the circulating water tank 10. Under the action of the filter blades 11, the fluid in the water will rotate, and most of the fluid will pass through the small holes on the filter blades 11. However, the sediment in the water body will be slowly blocked by the filter blades to the collection. Tank 12 effectively filters sediments in the water body.
下面对本发明提供的用于研究城市污水沉淀物的起动与冲刷率的实验装置的具体实验方法进行说明：The following is a description of the specific experimental methods of the experimental device provided by the present invention for studying the starting and flushing rates of urban sewage sediments:
首先，将循环泵9的两端分别与实验水池2和循环水箱10相连，再通过软管将实验水池2的软管出口8与循环水箱10箱连通，并在实验水池2中装入实验水，通过循环泵9进行实验水的循环流动。然后，将待测的城市污水沉淀物样品放入沙箱7中，再将沙箱7通过滑块放入导轨4上，并将沙箱7推进到旋转叶片5的正下方。再开启第一转动结构6，驱动旋转叶片5开始旋转，使沙箱7内部的城市污水沉淀物样品通过所述旋转叶片5尖端的速度进行起动和冲刷。First, connect both ends of the circulation pump 9 to the experimental pool 2 and the circulating water tank 10 respectively, and then connect the hose outlet 8 of the experimental pool 2 to the circulating water tank 10 through a hose, and fill the experimental pool 2 with experimental water. , the experimental water is circulated through the circulation pump 9. Then, put the urban sewage sediment sample to be tested into the sandbox 7 , then put the sandbox 7 on the guide rail 4 through the slider, and push the sandbox 7 to just below the rotating blade 5 . Then open the first rotating structure 6 and drive the rotating blade 5 to start rotating, so that the urban sewage sediment sample inside the sandbox 7 is started and washed at the speed of the tip of the rotating blade 5 .
完成起动与冲刷实验后，由于所述沙箱7质量固定，通过将冲刷前后所述沙箱7的质量差值换算成样品冲刷高度，即可直接计算冲刷率。再分别改变城市污水颗粒物级配、旋转装置的旋转速度、沙箱距离旋转叶片的距离等参数，利用控制变量法的实验原理，就能够获得各个因素与冲刷率以及起动 流速之间的关系。After the starting and flushing experiments are completed, since the mass of the sandbox 7 is fixed, the flushing rate can be directly calculated by converting the mass difference of the sandbox 7 before and after flushing into the flushing height of the sample. Then, by changing the urban sewage particle gradation, the rotation speed of the rotating device, the distance between the sandbox and the rotating blades, etc., and using the experimental principle of the controlled variable method, the relationship between each factor, the scour rate, and the starting flow rate can be obtained.
综上所述，本发明提供了一种用于研究城市污水沉淀物的起动与冲刷率的实验装置，包括循环泵、内部盛有实验水的实验水池以及与所述实验水池的一端相连通的循环水箱，所述循环泵的两端分别与所述实验水池的另一端和所述循环水箱相连通，用于驱动所述实验水在所述循环泵、所述实验水池和所述循环水箱之间进行循环流动；所述实验水池内设置有用于容纳城市污水沉淀物样品的沙箱以及用于调节水流速率的旋转装置，使所述沙箱内部的所述城市污水沉淀物样品在所述旋转装置的作用下进行起动和冲刷。通过上述方式，能获得不同时均流速作用下城市污水物沉淀样品的起动与冲刷率，对于城市污水管道的淤积起到很好的研究作用。To sum up, the present invention provides an experimental device for studying the starting and flushing rate of urban sewage sediments, including a circulation pump, an experimental pool filled with experimental water inside, and an experimental device connected to one end of the experimental pool. A circulating water tank. Both ends of the circulating pump are connected to the other end of the experimental pool and the circulating water tank respectively, and are used to drive the experimental water between the circulating pump, the experimental pool and the circulating water tank. The experimental pool is provided with a sandbox for accommodating urban sewage sediment samples and a rotating device for adjusting the water flow rate, so that the urban sewage sediment samples inside the sandbox are rotated in the Starting and flushing are carried out under the action of the device. Through the above method, the starting and flushing rates of urban sewage sedimentation samples under different time average flow rates can be obtained, which plays a very good role in researching the siltation of urban sewage pipes.
以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently substituted. without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

  1. 一种用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于，包括循环泵(9)、内部盛有实验水的实验水池(2)以及与所述实验水池(2)的一端相连通的循环水箱(10)，所述循环泵(9)的两端分别与所述实验水池(2)的另一端和所述循环水箱(10)相连通，用于驱动所述实验水在所述循环泵(9)、所述实验水池(2)和所述循环水箱(10)之间进行循环流动；所述实验水池(2)内设置有用于容纳城市污水沉淀物样品的沙箱(7)以及用于调节水流速率的旋转装置，使所述沙箱(7)内部的所述城市污水沉淀物样品在所述旋转装置的作用下进行起动和冲刷。An experimental device for studying the starting and flushing rate of urban sewage sediments, which is characterized in that it includes a circulation pump (9), an experimental pool (2) containing experimental water inside, and a connection with the experimental pool (2). A circulating water tank (10) is connected at one end, and both ends of the circulating pump (9) are connected to the other end of the experimental pool (2) and the circulating water tank (10) respectively, and are used to drive the experimental water. Circular flow is performed between the circulation pump (9), the experimental pool (2) and the circulating water tank (10); a sandbox for accommodating urban sewage sediment samples is provided in the experimental pool (2) (7) and a rotating device for adjusting the water flow rate, so that the urban sewage sediment sample inside the sand box (7) is started and flushed under the action of the rotating device.
  2. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述旋转装置包括至少部分设置于所述实验水中的旋转叶片(5)和用于驱动所述旋转叶片(5)转动的第一转动结构(6)。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that: the rotating device includes a rotating blade (5) at least partially disposed in the experimental water and a driving device. The first rotating structure (6) where the rotating blade (5) rotates.
  3. 根据权利要求2所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述第一转动结构(6)为电机，用于驱动所述旋转叶片(5)的叶尖产生周期性速率变化。The experimental device for studying the starting and flushing rate of urban sewage sediment according to claim 2, characterized in that: the first rotating structure (6) is a motor used to drive the rotating blade (5) Leaf tips produce periodic rate changes.
  4. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述实验水池(2)内沿垂直于水流方向设置有过滤板(3)，所述过滤板(3)上设置有若干孔洞，用于整流及过滤。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that: a filter plate (3) is provided in the experimental pool (2) perpendicular to the direction of the water flow, and the The filter plate (3) is provided with a number of holes for rectification and filtration.
  5. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述实验水池(2)内沿水流方向平行设置有两条导轨(4)，所述导轨(4)上设置有滑块，所述沙箱(7)通过所述滑块在所述导轨(4)上自由滑动。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that two guide rails (4) are arranged parallel to the water flow direction in the experimental pool (2), and the A slide block is provided on the guide rail (4), and the sandbox (7) slides freely on the guide rail (4) through the slide block.
  6. 根据权利要求5所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述沙箱(7)与所述导轨(4)可拆卸式连接。The experimental device for studying the initiation and flushing rate of urban sewage sediments according to claim 5, characterized in that the sandbox (7) and the guide rail (4) are detachably connected.
  7. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述沙箱(7)上设置有矩形扩展板，用于观察城市污水颗粒物样品的流动形式。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that: the sandbox (7) is provided with a rectangular expansion plate for observing the flow of urban sewage particulate matter samples form.
  8. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述循环水箱(10)中设置有用于阻隔水体中的污水沉淀物的过滤叶片(11)。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that: the circulating water tank (10) is provided with filter blades (11) for blocking sewage sediments in the water body. ).
  9. 根据权利要求1所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述循环水箱(10)底部的边缘处设置有收集槽(12)，用于收集污水沉淀物。The experimental device for studying the starting and flushing rate of urban sewage sediments according to claim 1, characterized in that: a collection tank (12) is provided at the edge of the bottom of the circulating water tank (10) for collecting sewage. Precipitate.
  10. 根据权利要求2所述的用于研究城市污水沉淀物的起动与冲刷率的实验装置，其特征在于：所述沙箱(7)位于所述旋转叶片(5)的正下方。The experimental device for studying the starting and flushing rate of urban sewage sediment according to claim 2, characterized in that the sandbox (7) is located directly below the rotating blade (5).
PCT/CN2022/120464 2022-03-21 2022-09-22 Experimental apparatus for studying incipient motion and scouring rate of urban sewage sediments WO2023178960A1 (en)

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CN114675003B (en) * 2022-03-21 2023-09-05 中建三局绿色产业投资有限公司 Experimental device for researching starting and scouring rate of municipal sewage sediment

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