CN204728262U - A kind of multiple barrier sediment model experiment sand supply automatically system - Google Patents
A kind of multiple barrier sediment model experiment sand supply automatically system Download PDFInfo
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- CN204728262U CN204728262U CN201420845039.9U CN201420845039U CN204728262U CN 204728262 U CN204728262 U CN 204728262U CN 201420845039 U CN201420845039 U CN 201420845039U CN 204728262 U CN204728262 U CN 204728262U
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Abstract
The utility model discloses a kind of multiple barrier sediment model experiment sand supply automatically system, this system comprises: for husky system and control system; Wherein, described control system comprises the Human machine interface, programmable controller PLC and the frequency converter that are connected successively; Described HMI output flow control instruction is to described PLC, described PLC obtains corresponding data on flows to this flow-control instruction, and be sent to frequency converter, described frequency converter controls according to the outflow of the data on flows received to the husky system of described confession, realizes high-precision sand supply automatically.
Description
Technical field
The utility model relates to water conservancy and hydropower technical field, particularly relates to a kind of multiple barrier sediment model experiment sand supply automatically system.
Background technology
At present, sediment model experiment suspended load sand-feeding system generally controls import gaza amount by flow meter by manual adjustment pipe valve, and this method not only precision is low, and is only applicable to constant gaza, if when gaza's amount change is very fast, and cannot manual adjustment.
But in tidal river model test, tidal flow silt discharge is among change in one-period, border gaza amount requires to change with tidal flow in good time, and conventional method cannot meet gaza's requirement of tidal river model test.
Utility model content
The purpose of this utility model is to provide a kind of multiple barrier sediment model experiment sand supply automatically system, and the in good time gaza that can realize whole process of the test controls, and has good stability and higher control accuracy.
The purpose of this utility model is achieved through the following technical solutions:
A kind of multiple barrier sediment model experiment sand supply automatically system, this system comprises: for husky system and control system;
Wherein, described control system comprises the Human machine interface, programmable controller PLC and the frequency converter that are connected successively.
Further, the husky system of described confession comprises: muddy water stirring pool, muddy water mixing plant, charging pump, steady pond, sediment delivery pipe, supply-water pump, water supply line;
The sand outlet of described sediment delivery pipe aims at described muddy water stirring pool; Described muddy water mixing plant is arranged in described muddy water stirring pool, and the top of described muddy water stirring pool is provided with a steady pond; The filling pipe end of described charging pump inserts in described muddy water stirring pool, and its delivery port aims at described steady pond;
The two ends of described supply-water pump are all connected with water supply line, and wherein the water inlet of one end water supply line inserts in described steady pond, and the delivery port of other end water supply line aims at described multiple barrier sediment model.
The technical scheme provided as can be seen from above-mentioned the utility model, utilize the control technology of PLC and the Frequency Conversion Theory of frequency converter, achieve and the in good time gaza of whole process of the test is controlled, this system substantially increases gaza's precision of model testing, meets gaza's requirement of tidal and sediment model testing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of multiple barrier sediment model experiment sand supply automatically system that Fig. 1 provides for the utility model embodiment;
The husky system architecture schematic diagram of confession that Fig. 2 provides for the embodiment of the present invention;
The Control system architecture schematic diagram that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
Embodiment
A kind of multiple barrier sediment model experiment sand supply automatically system that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, this system mainly comprises: for husky system and control system;
Wherein, described control system comprises the Human machine interface, programmable controller PLC and the frequency converter that are connected successively;
Described HMI output flow control instruction is to described PLC, described PLC obtains corresponding data on flows to this flow-control instruction, and be sent to frequency converter, described frequency converter controls according to the outflow of the data on flows received to the husky system of described confession, realizes high-precision sand supply automatically.
Further, the husky system of described confession comprises: muddy water stirring pool, muddy water mixing plant, charging pump, steady pond, sediment delivery pipe, supply-water pump, water supply line;
The sand outlet of described sediment delivery pipe aims at described muddy water stirring pool; Described muddy water mixing plant is arranged in described muddy water stirring pool, and the top of described muddy water stirring pool is provided with a steady pond; The filling pipe end of described charging pump inserts in described muddy water stirring pool, and its delivery port aims at described steady pond;
The two ends of described supply-water pump are all connected with water supply line, and wherein the water inlet of one end water supply line inserts in described steady pond, and the delivery port of other end water supply line aims at described multiple barrier sediment model.
Further, described HMI output flow control instruction is to described PLC, described PLC obtains corresponding data on flows to this flow-control instruction, and is sent to frequency converter, and described frequency converter carries out control according to the outflow of the data on flows received to the husky system of described confession and comprises:
The relation curve of outflow corresponding when setting up frequency converter different frequency in advance;
According to the sediment concentration for muddy water stirring pool in husky system, silt discharge needed for multiple barrier sediment model experiment is changed into the outflow for husky system, corresponding frequency converter frequency is tried to achieve with outflow relation curve interpolation again by frequency, and then export corresponding flow-control instruction by described HMI, described PLC controls described frequency converter according to the flow-control instruction of described correspondence, and the outflow realized for husky system controls.
For the ease of understanding, be described further for sand supply automatically system provided by the utility model below.
In good time sand supply automatically system provided by the utility model changes according to tidal flow silt discharge the feature opening border with tidal and sediment model testing three face to propose, and this system must meet the requirement that silt discharge luffing is large and change is fast.According to the silt discharge process of model needs, calculate the luffing of silt discharge and gaza's amount of process of the test, select the husky system equipment of suitable confession, to meet the requirement of whole process silt discharge luffing; Adopting frequency converter by controlling water pump input voltage, controlling pump rotary speed, thus controlling the water flow of water pump.Specifically:
Muddy water stirring pool can be comprised, muddy water mixing plant, charging pump, steady pond, sediment delivery pipe, supply-water pump, water supply line etc. for husky system; Control system can comprise man-machine interface (HMI), programmable logic controller (PLC), and frequency converter etc.
Exemplary, structure as shown in Figure 2 can be adopted to arrange for husky system.
Muddy water stirring pool capacity is determined according to the situation of model testing, and ensure the use meeting single test as far as possible, avoid joining sand in process of the test, stirring pool adopts rounded bottom to be convex arc shaped; Muddy water mixing plant is determined according to the size of stirring pool, generally selects motor-driven mechanical stirring equipment during larger stirring pool, and for only need stirring with a muddy water pump during less stirring pool, the mixing effect of muddy water pump is also fine, and practice shows a 3m
3stirring pool, the three writing brush footpath submersible sewage pumps of 60 liters per second only need stir five minutes, just can stir more even.Before test discharges water, to add water gaza by proportioning, be made into the sediment concentration of requirement; Muddy water stirring pool top arranges a steady pond, play constant water pressure, the muddy water stirred in stirring pool is extracted into steady pond by charging pump, and steady pond remains same water level, supply-water pump is consistent at same frequency outflow, thus improves the control accuracy of outflow.
The core of sand supply automatically system is control system, this system is made up of three parts, control section (being completed by HMI man-machine interface), arithmetic section (being completed by PLC), drive part (being completed by frequency converter); Exemplary, Control system architecture can be as shown in Figure 3.
Its course of work is as follows: HMI sends control instruction to PLC, and PLC receives the laggard row relax of instruction, then the data processed is passed to frequency converter, and frequency converter controls the outflow of supply-water pump again.HMI is the equipment of user's control PLC controller, user can need parameters according to oneself, man-machine interface adopts touching type operation mode, thus simpler, directly perceived, hommization when operating system is used, the internal processes of man-machine interface be as requested with the concrete condition of engineering, use configuration software to programme, run in WINDOWS operating system, very convenient during use, simple, directly perceived.PLC is the core of this cover system, PLC is programmed as required, can be programmed by ladder diagram mode, PLC has more than 100 kind of application instruction, powerful, controlled by logical order thus realize Automated condtrol requirement, being applicable to various automation control appliance.Frequency converter is also known as motor driver, it controls motor speed by the change of control motor voltage (V) and frequency (F), thus control the flow of water pump, frequency converter controls by PLC, receive PLC instruction, PLC can control the frequency, startup, stopping, reversion etc. of frequency converter.
In addition, during sand supply automatically system works, because pipeline has the constant water pressure in drag losses and steady pond, first to carry out calibration to sediment delivery pipe, the size of outflow during to determine frequency converter different frequency.Send signal to frequency converter by controller during calibration, the flow that different frequency is corresponding different, set up the relation curve of frequency and rate of discharge.Then according to the sediment concentration of stirring pool, the silt discharge that model testing needs is changed into rate of discharge, the frequency discharge relation curve interpolation that percent of pass is reserved again tries to achieve corresponding frequency converter frequency, during on-test, using this frequency procedure line as data file input control device, in process of the test, controller controls frequency converter according to this frequency signal, realizes the sand supply automatically to unsteady flow test.
In the utility model embodiment, can carry out various control by operation interface corresponding in HMI, operation interface mainly contains: main interface, optimum configurations interface and control inerface.Can automatically enter main interface after system boot, enter other interface again by main interface, implementation procedure controls.Interface is very directly perceived, operates very simple; Below each operation interface is described in detail:
1) main interface
Equipment power after system will enter main operation interface, first inverter supply button is selected, frequency converter is powered on, then DS (this model testing divides spring tide, middle tide and neap) is selected, optional wherein one, program will be run according to the setup parameter of the DS selected by you, select lower one page button can enter control inerface, Selection parameter button, enter the setting parameter of corresponding data series, for middle tide (spring tide and neap and middle damp optimum configurations interface phase with), in selection, after damp button, enter middle damp optimum configurations interface.
2) optimum configurations interface
This interface is the interface arranged system operational parameters, and sequence number refers to step number, and time step can be arranged in control inerface, can be skipped, thus change sequence number, revise the frequency often walked by button up or down, clicks exit button and returns key frame.The parameter that can arrange mainly contains: (1) water pump set of frequency.Directly can be attached thereto by computer when data volume is larger and be input to controller, also can directly revise on the touchscreen, frequency range is 0 ~ 50HZ; (2) multiplication factor is arranged.Multiplication factor has the multiplication factor of three corresponding 1# pumps of numerical value difference, 2# pump, 3# pump frequency, setting range is 1 ~ 9.9, the product of frequency and multiplication factor, namely be the actual motion frequency of frequency converter, when frequency and multiplication factor be set long-pending be greater than 50 time, frequency converter runs with 50HZ, multiplication factor parameter is set mainly for better controlling sediment transport precision, if stirring pool sand content join higher or lower time, can by reducing or increasing multiplication factor, accurately to control silt discharge; (3) maximum step number is arranged, and can change the operation step number in each cycle by arranging maximum step number; (4) cycle-index is arranged, and frequency converter runs to the step number of setting for once to circulate from first frequency, and we can set cycle-index according to actual needs.
3) control inerface
Control inerface divides two parts: control section and display section.Control section can carry out master control and point control to the startup of each water pump (such as, the utility model embodiment employs three water pumps) and stopping, and click total start button, three water pumps start simultaneously; Click total stop button, three water pumps can stop simultaneously, click the startup corresponding to each pump and stop button respectively, can control startup and the stopping of single water pump respectively, click page up button and enter main interface; Click the step-length time, can setup times step-length, chronomere is second, and the bottom of control inerface is divided into the display section of numerical value, shows the cycle (cycle-index) of the current operation of each water pump, step number and ongoing frequency respectively.
The such scheme of the embodiment of the present invention is applied in nearly 10 fire/nuclear power plant's water intake and outlet engineering sediment model testing such as Taishan Electric Power Plant, Yangjiang Nuclear Power, Qingdao Power Plant second phase, red nuclear power along the river, Port of Fangcheng nuclear power, Shidao Bay nuclear power, practice shows that this sand supply automatically system have employed the control technology of PLC and the frequency conversion effect of frequency converter, successfully solves the automatic control problem of tidal and sediment model testing gaza.This system is reliable and stable in actual applications, simply easy to operate, substantially increasing test gaza control accuracy, is tidal and sediment model testing, and other multiple barrier, unsteady flow river model test suspended load sand supply automatically provide practicable new method.
The above; be only the utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (1)
1. a multiple barrier sediment model experiment sand supply automatically system, is characterized in that, this system comprises: for husky system and control system;
Wherein, described control system comprises the Human machine interface, programmable controller PLC and the frequency converter that are connected successively;
The husky system of described confession comprises: muddy water stirring pool, muddy water mixing plant, charging pump, steady pond, sediment delivery pipe, supply-water pump, water supply line;
The sand outlet of described sediment delivery pipe aims at described muddy water stirring pool; Described muddy water mixing plant is arranged in described muddy water stirring pool, and the top of described muddy water stirring pool is provided with a steady pond; The filling pipe end of described charging pump inserts in described muddy water stirring pool, and its delivery port aims at described steady pond;
The two ends of described supply-water pump are all connected with water supply line, and wherein the water inlet of one end water supply line inserts in described steady pond, and the delivery port of other end water supply line aims at described multiple barrier sediment model.
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| CN201420845039.9U CN204728262U (en) | 2014-12-25 | 2014-12-25 | A kind of multiple barrier sediment model experiment sand supply automatically system |
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| CN201420845039.9U CN204728262U (en) | 2014-12-25 | 2014-12-25 | A kind of multiple barrier sediment model experiment sand supply automatically system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756008A (en) * | 2016-04-22 | 2016-07-13 | 珠江水利委员会珠江水利科学研究院 | Automatic sand adding device for tidal estuary sediment physical model |
| CN105908672A (en) * | 2016-04-22 | 2016-08-31 | 珠江水利委员会珠江水利科学研究院 | Automatic sediment adding method for tidal estuary sediment physical model |
-
2014
- 2014-12-25 CN CN201420845039.9U patent/CN204728262U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756008A (en) * | 2016-04-22 | 2016-07-13 | 珠江水利委员会珠江水利科学研究院 | Automatic sand adding device for tidal estuary sediment physical model |
| CN105908672A (en) * | 2016-04-22 | 2016-08-31 | 珠江水利委员会珠江水利科学研究院 | Automatic sediment adding method for tidal estuary sediment physical model |
| CN105756008B (en) * | 2016-04-22 | 2018-03-27 | 珠江水利委员会珠江水利科学研究院 | Sand supply automatically device for tidal estuary sediment physical model |
| CN105908672B (en) * | 2016-04-22 | 2019-01-29 | 珠江水利委员会珠江水利科学研究院 | Sand supply automatically method for tidal estuary sediment physical model |
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