JPH0726595A - Assistant device of system analysis for exhaust water drainer site - Google Patents

Abstract

PURPOSE:To facilitate designs, by analyzing the transient change of the physical quantity of water corresponding to a water channel condition and indicating it, in accordance with the input necessary condition. CONSTITUTION:The conditions of constiting elements of a water channel are input in an analyzer composed of a large capacity arithmetic unit 14 through input and output devices constituted of small or middle capacity arithmetic units 12, 19. The unit 14 calculates an initial water level distribution in the water channel on the basis of the water level of a pumping well and the initial inflow volume and discriminates the opened or closed state of the water channel on the basis of the water level. Next, continuous formulas suitable for the water channel conditions and equations of motion are solved in sequence by the characteristic curve method of numerical solution with given conditions of the inflow and outflow. And the boundary of open and closed channels is judged on the basis of the discrimination of water level and the equations are changed before and after that to decide the water level and flowing velocity so that the continuous fomulas and the equations of momentum conservation law are satisfied at the boundary. Moreover, the analyzed results are output on the arithmetic units 12, 19 by an animation or the like. In this way, an exhaust water drainer site system can be easily designed and operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage station system analysis support device for draining rainwater or river overflow water using a pump, and more particularly to a drainage station used for designing a drainage station system and formulating its operating method. The present invention relates to a system analysis support device.

[0002]

2. Description of the Related Art In a conventional wide area rainwater drainage system,
The amount of water that flows into the pump station (drainage station) via the inflow trunk line during rainfall changes with time. Conventional rainwater drainage systems often operate the inflow trunk line as an open channel.For example, as described in Hitachi Commentary, Vol.65 No.4 (1983-4), p41-46, unsteady flow analysis of an open channel is performed. The pump station has been planned based on the results obtained by However, in recent years, with the progress of urbanization, it is becoming difficult to secure land for pumping stations in addition to rapid and large outflow of rainwater. For this reason, it has become necessary to use the closed channel (pressure pipe) operation that maximizes the storage effect of the channel itself and keeps the pump capacity at an appropriate scale. in this case,
Both the open channel and the closed channel will be operated in the inflow trunk line, and the analysis technology of the channel where the open channel and the closed channel coexist is required. Regarding the analysis of the coexistence state of this open channel and closed channel, there is a method that incorporates the idea of jumping the open channel at the boundary between the open channel and the closed channel. (Journal of Hydrauric Division of tha ASC
A) As described in Vol.98.No.HY1.Jan.1972, p11-27, consider the closed channel by a wiggert as a rigid body and make it a flank flow.
There was an analysis of "unsteady flow in open channel and closed channel" which was replaced with (plug-flow). In addition, Journal of Hydrauric Engineering Vol.109, N
As described in O.11, Nov.1983.ASCE, p1487-1504,
(Song) et al. Have analyzed "a model of unsteady mixed flow of rainwater drainage system" in which a closed channel is treated as the same fluid as an open channel.

[0003]

The above-mentioned prior art analyzes the coexistence state of an open channel and a closed channel by considering the closed channel as a rigid body for a single channel in the first two known examples. However, there was a problem that the pressure distribution inside the closed channel was not evaluated. In the known example by the last song (Song), the coexistence state of the open channel and the closed channel is solved by the characteristic curve method for the continuous equation and the equation of motion, and the branch confluence is also dealt with. There was a problem that it was not clear how to give drainage conditions.

An object of the present invention is to provide a drainage pumping station system analysis support device which can solve the above-mentioned problems of the prior art and can contribute to designing and operating method of a drainage pumping station system in consideration of necessary conditions such as inflow and drainage conditions. To provide.

[0005]

In order to achieve the above object, the drainage pump station system analysis support device of the present invention provides a facility for inflowing rainwater or overflow water from a river weir and water flowing in from the inflow facility. In a drainage pump station system comprising a branch waterway for collecting, a main waterway for collecting the branch waterways, and a drainage pump station having a pump for draining the water collected by the trunk waterway, in the drainage pumping system waterway An analysis device for analyzing transient changes in physical quantities of water in a state or in a closed channel state or in an open / closed channel coexisting state in which an open channel part and a closed channel exist simultaneously by solving a continuous equation and a motion equation by a characteristic curve method, and Input device for inputting necessary conditions including inflow condition and drainage condition for the analysis device to analyze the transient change of the physical quantity of water in the drainage pumping station system. , In which so as to an output device and for outputting the analysis result of the analyzing device of transients physical quantities within the drainage station system. Further, in the drainage pumping station system analysis support device, the analysis device continuously performs a transient change of a physical quantity in a water channel system in which a plurality of water channels merge or a water channel system branching into a plurality of channels, and further in a water channel system having a plurality of confluences and branches. The equation and the equation of motion are solved by the characteristic curve method for analysis.

[0006]

In the above drainage pumping station system analysis support device, the input device provides the analysis device with the shape condition, the inflow condition, and the drainage condition of the waterway components as necessary conditions (calculation conditions). As a result, the analysis device calculates the initial water level distribution in the canal based on the pump well water level and the initial inflow as initial conditions. Next, it is determined from the water level at that time whether the inside of the water channel is an open water channel or a closed water channel. Here, the contents of the continuity equation and the equation of motion change depending on the state of the water channel. Therefore, according to the judgment of the channel condition, the continuous equation and the motion equation that match the condition of the channel are given as inflow conditions and drainage conditions as boundary conditions, and are successively solved by the characteristic curve method of the numerical method. At that time, the water level is always judged, and if there are both open and closed water channels at any position in the water channel, that point is taken as the boundary surface between the open water channel and the closed water channel. And the equation of motion are changed. At the boundary surface, the water level and flow velocity are determined so that the continuity equation and the momentum conservation equation hold. The analysis result is passed to the output device. The output device outputs the analysis result as a graph or animation. In this way, by analyzing the condition inside the drainage pump station system waterway, it is possible to easily design the drainage pump station system and formulate the operation method.

[0007]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 19. FIG. 1 is a block diagram showing an embodiment of a drainage pumping station system analysis support device according to the present invention. In FIG.
This drainage pumping station system analysis support device is a small arithmetic unit 12,
Page printer 13, large-scale processing device 14, input device databases 15a and 15b, output device database 16
a, 16b, continuous paper printer 17, plotter 18, medium-sized arithmetic unit 19, network 20, and CRT 21a,
21b, the small arithmetic device 12 includes a CPU, an input device, and an output device, and the large arithmetic device 14 includes a CPU,
The medium-sized arithmetic unit 19 includes an analysis device and includes a CPU, an input device, an analysis device, and an output device. This configuration has a large-sized arithmetic unit 14, a medium-sized arithmetic unit 19, and a small-sized arithmetic unit 1.
It is considered that 2 is used as follows according to the scale of the analysis target. That is, a lot of input data,
When a large amount of time is required for calculation, the small calculation device 1
2. Input conditions (required conditions) are created by the input device (preprocessor section) composed of the CRT 21a and the input device database 15a, and the input conditions (required conditions) are created by the network 20 to the analysis device composed of the large-scale processing device 14 and the continuous paper printer 17. Transfer data and perform analysis. The analysis result in that case is output by the large-sized arithmetic unit 14 and the plotter 18, or is sent by the network 20 to an output unit (post-processor section) composed of the small-sized arithmetic unit 12, the CRT 21a, and the output unit database 16a and is output. It If the analysis is of a relatively small scale, the medium-sized arithmetic unit 19, the CRT 21b, the input unit database 15
b, the output device database 16b configures an input device, an analysis device, and an output device, and performs input, analysis, and output.
In either case, the input device is
That is, it is for inputting inflow hydro (time change of inflow amount), water channel shape data, pump discharge amount, and interactively instructing what should be input. or,
The output device graphically outputs the analysis result, that is, the water level at each point of the water channel, the change in the flow rate, the change in the drainage amount of the pump at the drainage station, and the like.

FIGS. 2 (a) and 2 (b) are a structural view showing an example of the drainage pumping station system of the present embodiment shown in FIG. 1 and an explanatory view of the open water channel state, the closed water channel state, and the open / close water channel coexisting state. is there. In FIG. 2A, the drainage pumping station system of the present embodiment will be briefly described. Here, the drainage pumping station system consists of a canal 1, a stand 7, an inlet 2, a gate 3 and a pump well 4.
It is assumed that it is composed of a drainage pumping station 10 consisting of a pump 5 and a river 6. Overflowing water 8 or rainwater 9 from the river flows into the waterway 1 from the stand 7. The inflowing water flows in the waterway 1 into the inflow port 2 located downstream by natural flow,
It flows into the pump well 4 due to the relationship between the gate 3 and the water level 11 of the pump well 4. The inflowing water is drained to the river 6 by the pump 5. 2 (b) to 2 (d), the state of water in the water channel 1 of the drainage pumping station system will be described. In FIG. 2B, the water in the water channel 1 has a free surface (water level) and is called an open water channel. In FIG. 3C, the inside of the water channel 1 is filled with water and is called a closed water channel. In Fig. 3 (d), a part of the water channel 1 is an open water channel with a free surface (water level), and a part is a closed water channel filled with water. We will call it the coexistence channel. Waterway 1
Which of the above-mentioned three types of water channel states is determined from the relationship between the water inflow condition and the drainage condition of the pump 5, and can be in any state depending on the conditions. Further, the water channel 1 is not limited to one, and there may be a case where a plurality of water channels are branched or merged. In that case, a more complicated water channel state occurs. on the other hand,
Since the design and construction method of the water channel is different between the open water channel and the closed water channel and the flow state of water is also different, it is an important technical issue to know which state the water channel is in.

FIG. 3 is a process flow chart showing the process flow of the embodiment of FIG. 3, in process S1, the drainage station 10 of FIG. 2 is set as a calculation condition by the input device of FIG.
Condition of the shape data S11 of the waterway constituent elements such as the waterway 1, the pump well 4 and the standing hole 7, the inflow hydro S1 of the waterway 1
The inflow condition of 2, the capacity of the pump 5, the number of pumps, and the drainage condition of the pump drainage amount S14 according to the pump operation mode S13 are given to the analysis device. In process S2, the analyzer performs initial steady state calculation, and calculates the initial water level distribution in the water channel 1 based on the inner water level 11 of the pump well 4 and the initial inflow amount of the water channel 1 of the drainage pumping station 10 of FIG. 2 as an initial condition. Next, in step S3, unsteady flow analysis is performed. First, in step S31, the waterway state is determined, and it is determined from the water level at that time whether the inside of the waterway 1 is an open waterway or a closed waterway. The contents of the continuous equation and the equation of motion change depending on the condition of the water channel. Then, according to the determination of the waterway state, if there is only an open waterway, an open waterway analysis is performed in step S32, and if there is only a closed waterway, a closed waterway analysis is performed in step S33, and a continuous equation that matches the state of the open waterway and closed waterway, respectively. And the equation of motion are given as inflow conditions and drainage conditions, and they are successively solved by the characteristic curve method. At that time, process S
In the waterway state determination of 31, the water level is always determined, and if it is determined that the open waterway and the closed waterway both exist at an arbitrary position in the waterway, it is determined in step S34 that the open waterway and the closed waterway are Boundary surface treatment is performed, and that point is set as the boundary surface between the open water channel and the closed water channel. In step S35, the open / close water channel coexistence analysis is performed. The water level and flow velocity are determined so that the formula and the formula for conservation of momentum hold. Next, the analysis result S4 is passed to the output device. This output device performs processing S5 on the analysis result in processing S5.
At 51, a graph is output, or at step S52, an animation is displayed.

Next, the outline of the analysis method for the open channel, closed channel, and open / close channel coexistence analysis in FIG. 3 of the analyzer of FIG. 1 will be described. First, as symbols, x is the channel length, y is the water depth,
t is time, v is average velocity, h is head, A is cross section of running water, T is width of water surface of open channel, a is pressure wave velocity of closed channel, c is wave velocity of open channel, and C is characteristic. A curve, S _f is a friction gradient, S _O is a waterway floor gradient, and g is a power acceleration.

As an analysis method, in the open channel and the closed channel,
The propagation speed of waves is different, and so is the propagation speed of phenomena. Therefore, the equation of motion and the equation of continuity are established for the open channel and the closed channel, respectively, and in the case where both coexist, the interface where the two meet will be considered. First, as a basic equation, the equation of motion of the open channel and the equation of continuity are expressed by (Equation 1) and (Equation 2). However, it is set to (Equation 3).

[0012]

[Equation 1]

[0013]

[Equation 2]

[0014]

[Equation 3]

Further, the basic equations of the open channel are the following (Equation 4) and (Equation 5).
In addition, the wave propagation velocity c is replaced with the pressure wave propagation velocity a.

[0016]

[Equation 4]

[0017]

[Equation 5]

By obtaining the characteristic curves of (Equation 1), (Equation 2) and (Equation 4), (Equation 5), the fractional equation is converted into an ordinary differential equation, which is transformed into a difference equation, Perform numerical calculations. The characteristic curve formula for the open channel is shown below. (Equation 6), (Equation 7) and (Equation 8), (Equation 9) are characteristic curve expressions of the characteristic curves C ⁺ and C ⁻ , respectively.

[0019]

[Equation 6]

[0020]

[Equation 7]

[0021]

[Equation 8]

[0022]

[Equation 9]

The characteristic curves C ⁺ and C ⁻ are shown in FIG. 4 (a). As shown in FIG. 4A, the water channel is divided into lengths of Δx, and the value of the grid point (point P in FIG. 4A) at time t from the water depth and flow velocity of each calculation grid point at time t−Δt Is calculated using (Equation 6) to (Equation 9).

The characteristic curve formula of the closed water channel is expressed by (Equation 6) and Eq.
In addition, v + c on the right side of (Equation 7) and v−c on the right side of (Equation 9) are obtained by replacing them with a and -a, respectively, and the calculation is performed in the same manner as in the case of the open channel.

Next, the analysis of the coexistence state of the open water channel and the closed water channel will be described. When there is an interface where the open channel and the closed channel are adjacent to each other between the calculation grids, the open channel and the open channel are switched at the interface. The calculation that determines the position of the interface
An example will be described in which the closed channel is changed to the open channel from the upstream side to the downstream side shown in FIG. 4B. As shown in FIG. 4 (b), the flow at the interface has six unknowns h ₁ , v ₁ , y ₂ , v ₂ ,
There are w and l. h ₁ and v ₁ are the head and velocity on the closed channel side, y ₂ and v ₂ are the water level and velocity on the open channel side, w is the interface velocity,
l is the distance from the adjacent grid point. From the continuity equation and the momentum equation, (Equation 10) and (Equation 11) are obtained, and F of (Equation 11) is obtained.
₁ and F ₂ are hydrostatic pressures of the cross section of the closed channel and the cross section of the open channel. The interface velocity is expressed by (Equation 12). The characteristic curve formula near the interface is C ₁ ⁺¹ on the closed channel side as shown in Fig. 4 (c).
_Two , C ₂ ⁺ and C ₂ ⁻ are used on the open channel side. Characteristic curve C
^{_{1 +, C 2 +, C}} 2 - characteristic curve equation (Equation 13), (Equation 1
4) and (Equation 15), and from (Equation 10) to (Equation 1)
The position of the interface is determined by 5).

[0026]

[Equation 10]

[0027]

[Equation 11]

[0028]

[Equation 12]

[0029]

[Equation 13]

[0030]

[Equation 14]

[0031]

[Equation 15]

Next, in the analysis of a waterway with a branch / confluence, it is determined by the above-mentioned interface calculation whether the waterway connected at the branching point or the confluent point is an open water channel or a closed water channel, and the state of each water channel is determined. It is calculated from the characteristic curve according to, the continuity formula, and the relationship that the water level at the junction or the junction is the same in each waterway. In addition, regarding the model of the canal element, in the case of the shaft, the calculation is performed by satisfying the characteristic equation in the canal connected to the shaft and the relational expression between the continuous flow rate considering the inflow from the shaft and the water level of the shaft. To do. The pump station (drainage station) can be modeled in consideration of the shape of the pump well, the gate, the pump capacity, the pump operation mode, etc. The relational expression between the inflow amount to the pump station (drainage station), the drainage amount from the pump well and the pump well water level, and the characteristic equation of the water channel connected to the pump well are calculated simultaneously. In the pump operation mode, the control of the number of pumps, the number of rotations, and the blade angle can be incorporated to simulate the actual control of the pump station. The water channel has a trapezoidal cross section other than a circular pipe.
It can handle tunnel type etc. Various coughs and reservoirs can also be modeled.

FIGS. 5A and 5B are display screen examples showing an example of the input screen displayed by the input device of this embodiment shown in FIG. In the screen 1 of FIG. 5 (a), in the display screen example of the input screen displayed on the CRT by the input device of FIG. 1, first, in the channel element input screen, as the element input, a list of elements to be input is displayed as shown in the figure. To be done. Then select the cursor according to what you want to input. For example, it is assumed that “waterway” is selected. Then, the display screen becomes screen 2 in FIG. 4 (b). In screen 2 of Fig. 5 (b), the channel individual NO. Of the channel (suction side) displayed is displayed as the channel element input. Enter the numerical value of the analysis target in order from ○ to Roughness coefficient. Next, regarding the input of the channel cross-sectional shape,
The sectional type NO. When you select, the guidance shown in the upper right figure (a part of the shape) is displayed, and which dimension should be input to input the shape of the waterway to be analyzed is displayed as guidance. Therefore, an appropriate shape is selected and, for example, in the case of a rectangular water channel, the cross-sectional type NO. Two
If you select, you can see that the waterway width XR and waterway height H are required, so input that data to the relevant position.

FIGS. 6, 7, and 8 are graphs showing the example of an output screen displayed by the output device of this embodiment shown in FIG. 6 is a time change diagram of various physical quantities of FIG. In FIG. 6, a diagram showing the waterway system of the drainage pump trunk main line and the names of each part are displayed on the CRT of the output device of FIG. It should be noted that the water channel 1 to be analyzed by the analysis device is considered to have a system as shown in FIG. 6, and the analysis results are obtained because the analysis is performed in consideration of the conditions of all the water channels. It's hard to see the results all at once, so divide the trunk into several, select the trunks you want to see, and display the results. At this time, use Figure 6 to decide which trunk to select. To do. Although the branch line is omitted in the example of FIG. 6, the branch line may be added when the trunk line is simpler. As shown in FIG. 6, a part of the branch line is displayed. It will flow from the point.

In FIG. 7, the water level at each point in the waterway of the trunk line selected in FIG. 6, for example, the trunk line A, changes with time, and the water level changes at six points can be displayed at the same time. The numbers in parentheses indicate the position within the waterway. Which point in the waterway to display the graph is determined by specifying the number, and in this example, numbers (7), (8), (9), (10), (11), (1
The order is 2). The water level and time scale on the vertical and horizontal axes of this graph can be set arbitrarily. In addition to the water level at each point in the water channel of this example, the time change of the flow rate at each point in the water channel can be displayed by the same method.

FIG. 8 shows an example of the screen displayed when the drainage pump station is selected in FIG. 6, and the lower half of the screen is a schematic diagram of the water channels, pump wells, pumps and rivers which are the components of the drainage pump station. It was done. When you select the part of the pump with the cursor on this screen, the discharge amount of the pump (total discharge amount)
Is displayed in the upper half of the screen, and the state at that time is shown in FIG. Similarly, if you select a waterway, pump well or river on this screen, the corresponding physical quantity will be displayed. That is, if the selected position is a waterway, the displayed physical quantity is the flow rate, similarly, if it is a pump well, the pump well water level, if it is a pump, the total discharge quantity, as well as the discharge quantity per pump, the pump quantity The number of rotations, pump blade angle, etc., and the river water level for rivers. See also FIG.
In the center of the is the pump operation status display at time time 0.00 on the upper left, ○ indicates stop, ● indicates operation, and select the water level and operation time display menu at the bottom left of Fig. 8 When is specified, the pump well water level and the river water level at that time are displayed in the schematic diagram of the drainage pump station in the lower half, and the operating status of the pump is displayed in the center circle.

9 to 15 are examples of animation display screens showing other examples of output screens displayed by the output device of this embodiment. FIG. 9 is a diagram showing an example of a display screen of the display menu of the output device. In FIG. 9, the upper left of the figure is the first menu, and there are the following eight selection branches, of which the fourth and fifth selection branches have smaller selection branches. Figure 1
Reference numeral 0 is an example of a display screen when all the functions of the display menu in FIG. 9 are displayed. In FIG. 9, the first input file in the upper left menu indicates the analysis input data file of the input device database. The second shape file specifies the waterway shape data file. The third post file specifies the analysis data file of the output database. The fourth time conndision specifies the animation display time interval. The fifth Display option specifies the display content of the animation. 6th Display opti
on starts displaying the animation. 7th Displa
ystop stops the animation display. 8th Exi
t is a function for ending this menu screen.

When the fifth Display option is selected, the central menu shown in FIG. 9 is further displayed. Where Display type
Is H to display the change in water level with H and P on the right, and P to display the change in water level with lines and arrows.
Choose. 11 to 13 show the above-mentioned display menu of FIG.
It is a display screen example figure at the time of displaying the function at the time of selecting Display type. FIG. 11 is a display screen when the display type is H when the water channel is closed and the water channel is filled with water, and the water level is filled in and displayed. In this case, only the standing and pump water levels can be seen. Fig. 12 shows the display screen when the above display tipe is P when the waterway is closed and the waterway is filled with water, and the water level is indicated by a line and an arrow. I also understand. Figure 13 shows the above display tipe when the water level is low and the water channel is not filled with water.
In the display screen when H is H, in this case, when the display tipe is set to P, the water level is indicated by a line and an arrow, but the display contents of P and H are the same.

Next, Scale option is the pit scale on the right,
In the columns of pump scale, pipe height scale and pitheight scale, specify the scale of the display of the waterway for each part as the width of the pit, the width of the pump well, the height of the pit, and the height scale of the waterway.
Input Display Option is a selection of display contents of inflow condition,
The 1ist displays the name of the standing on and off on the right (o
n) or not to display (off), the Graph
Displays a graph of inflow to the standing on and off to the right (o
n) or not display (off). Output Dis
play Option is the selection of the display contents of the picture of the waterway, and the node
Is the position (node) where there is a channel calculation result at on and off on the right
Is displayed (on) or not displayed (off), and that Graph displays (on) or does not display the water level graph where (node) is at (on) or (off) on the right. off) is the choice. For the pump side, use the R and L on the right to set the pump position to the right (R) on the screen. This is a function of selecting whether to make it left (L).

When the fourth time condition is selected, the menu at the lower left of FIG. 9 is further displayed. Where time u
nit is the unit of elapsed time of water level change, seconds (sec) or minutes (mi
Select with n). Start time specifies the display start time of the water level change. End time specifies the display end time of the water level change. Time increment specifies the time interval for displaying the water level change. Anime speed is a function to specify the animation display speed. The animations shown in FIGS. 14 to 19 are displayed according to the designation by the above menu.

FIG. 14 is a normal screen (standard screen) displayed on the CRT of the output device as described above. FIG. 15 is a water level graph node display screen. The water level graph in this figure is shown in Figure 9.
The water level graph at any point can be displayed by selecting the display menu of, and the water level of the pump well is the same. This graph can be enlarged / reduced and moved by operating the mouse as an input device. Also, the node point '●' is displayed by the node display selection menu. FIG. 16 is an inflow graph display screen. The vertical axis and the horizontal axis of the inflow amount graph of each pit and pump in this figure are automatically set, and they can be enlarged / reduced and moved by operating the mouse. FIG. 17 is a pump discharge amount graph display screen. In the graphs shown in FIGS. 11 to 19, the black dot on the graph line indicates the dot
● 'Leaves how the current water level has changed so far by moving in synchronization with the animation of the water level over time, and assists in understanding how it will change in the future. This pump discharge rate graph is displayed on a preset scale. FIG. 18 is a standing list display graph. This figure shows that the name of each stand is displayed in Japanese in the area surrounded by three horizontal lines and vertical wavy lines on the left side of the screen in a square. It is for understanding what is equivalent to. A number is assigned to each protest in order from the upstream side, and the name is associated with the number. FIG. 19 shows a display screen when water overflows and the pump is stopped. This figure shows the function of displaying a figure that means overflow when the water level rises too much and overflows from the standing. In addition, the pump is displayed in gray when it is operating, and when the pump is stopped, the shaded area in the enlarged view is displayed in red.

[0042]

According to the drainage pumping station system analysis support device of the present invention, it is effective in designing a drainage pumping station system for draining rainwater or overflowing water of a river and formulating an operating method thereof.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a drainage pumping station system analysis support device of the present invention.

FIG. 2 is a configuration diagram showing an example of a drainage pump station system to be the target of FIG.

FIG. 3 is a flowchart of the process of FIG.

FIG. 4 is an explanatory diagram of the characteristic curve of the open water channel, the flow of the interface, and the characteristic curve of the open / close water channel coexisting state in FIG. 3;

5 is a diagram showing an example of a screen for inputting a waterway element of the input device of FIG.

FIG. 6 is a screen example view of a water channel system of the output device of FIG. 1.

FIG. 7 is a diagram showing a screen example of a time change at each point of the water channel of the output device of FIG.

FIG. 8 is a diagram showing a screen example of temporal changes of various physical quantities of the drainage station of the output device of FIG.

9 is a screen example diagram of an animation display menu of the output device in FIG.

10 is a diagram showing a display screen example of all functions of the display menu of the output device of FIG.

FIG. 11: Closed water channel, Di in the display menu of the output device of FIG.
It is a screen example figure of splay tipe H.

FIG. 12: Open channel, Di in the display menu of the output device of FIG.
It is a screen example figure of splay tipeP.

13 is an open channel, Di in the display menu of the output device of FIG.
It is a screen example figure of splay tipe H.

14 is a diagram showing an example of a normal screen of a display menu of the output device of FIG.

15 is a diagram showing an example of a water level graph node display screen of the display menu of the output device of FIG.

16 is a diagram showing an example of an inflow graph display screen of the display menu of the output device of FIG.

17 is a diagram showing a screen example of a pump discharge amount graph display screen of the display menu of the output device of FIG. 9. FIG.

FIG. 18 is a diagram showing an example of a standing list display screen of the display menu of the output device.

19 is a diagram showing an example of a display screen when water overflows and the pump is stopped in the display menu of the output device shown in FIG.

[Explanation of symbols]

 1 Waterway 2 Inlet Drain 3 Gate 4 Pump Well 5 Pump 6 River 7 Standing 8 Overflow Water from River 9 Rainwater 10 Drainage Pump Station 11 Pump Well Water Level 12 Small-scale Computing Device 13 Page Printer 14 Large-scale Computing Device 15a, 15b Input Device Database 16a , 16b Output device database 17 Continuous paper printer 18 Plotter 19 Medium size computing device 20 Network 21a, 21b CRT

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Otani 603 Jinritsu-cho, Tsuchiura-shi, Ibaraki Pref., Inside the Hitachi Co., Ltd. Tsuchiura factory

Claims (18)

[Claims] 1. A facility for inflowing rainwater or overflow water from a weir of a river, a branch line for collecting water flowing in from the inflow facility, a main line for consolidating the branch lines, and water collected by the main line. In a drainage pumping station system comprising a drainage pumping station having a pump for draining water, in the drainage pumping station system waterway, the water in an open channel state or a closed channel state, or an open / close channel coexisting state in which an open channel and a closed channel coexist. An analyzer for analyzing transient changes in physical quantities by solving a continuous equation and a motion equation using the characteristic curve method, and the necessary conditions for the analyzer to analyze transient changes in physical quantities of water in the drainage pumping station system are input. And an output device for outputting the analysis result of the analysis device of the transient change of the physical quantity in the drainage pumping station system. Drainage pump station system analysis support device. 2. The analysis device uses a continuous equation and a motion equation for a transient change in a physical quantity of water in a water channel system in which a plurality of water channels join or a water channel system in which a plurality of water channels branch, and a water channel system in which a plurality of water channels merge and branch. 2. The drainage pumping station system analysis support device according to claim 1, wherein the analysis is performed by solving the characteristic curve method. 3. The drainage pumping station system analysis support device according to claim 1, wherein the input device gives the inflow condition of the water channel as the necessary condition as a water level change with respect to time. 4. The drainage pumping station system analysis support device according to claim 1, wherein the input device gives the inflow condition of the water channel as the necessary condition as a flow rate change with respect to time. 5. The input device applies the inflow condition of the water channel as the necessary condition as a flow rate change with respect to time obtained from the relationship between the weir and the water level on the upstream side of the weir and the water level on the downstream side of the weir. The drainage pumping station system analysis support device according to claim 1. 6. The drainage pumping station system analysis support device according to claim 1, wherein the input device gives shape data of a waterway component as the necessary condition. 7. The input device provides a pump discharge amount of drainage condition as the necessary condition.
Alternatively, the drainage pump station system analysis support device according to claim 2. 8. The input device according to claim 1, wherein the input device for inputting a necessary condition for the analysis device to analyze the transient change of the physical quantity in the drainage pumping station system is an interactive type. Drainage pump station system analysis support device. 9. The drainage condition of the analysis device is based on the pump well water level, the water level of the river to which the pump is drained, the pipe loss before and after the pump, the drainage confluence pipe loss, and the pump characteristics.
The drainage pumping station system analysis support device according to claim 1 or 2, wherein the pump drainage amount is determined. 10. The analysis device, when there are a plurality of pumps as drainage conditions, gives the starting / stopping water level of each pump, and performs orbiting / stopping the pumps according to the water level of the pump well to operate. 10. The drainage pumping station system analysis support device according to claim 9, wherein the pump drainage amount is determined by synthesizing the characteristics of the existing pump. 11. The analysis device calculates the number of times of pump operation as a function of the change in the water level of the pump well, and uses the pump characteristics at the calculated number of revolutions so that the pump well water level becomes a preset pump well water level. 2. The logic for controlling the pump is incorporated in the device.
Drainage pump station system analysis support device described in 0. 12. The analyzer calculates the blade angle of the pump as a function of the change in water level of the pump well, and uses the pump characteristics at the calculated blade angle to set the pump well water level to a preset pump well water level. The drainage pumping station system analysis support device according to claim 10, wherein the pump control logic is incorporated in the pump. 13. The drainage pumping station system analysis support apparatus according to claim 1, wherein the output device has a function of outputting a time change of an analysis result at an arbitrary point in the drainage pumping station system. 14. The drainage pumping station according to claim 1, wherein the output device has a function of outputting an analysis result in the drainage pumping station system at an arbitrary time as a change at each point in the drainage pumping station system. System analysis support device. 15. The output device has a function of displaying an analysis result in the drainage pumping station system at any time as an animation by continuously displaying changes at respective points in the drainage pumping station system. The drainage pumping station system analysis support device according to claim 1. 16. The drainage pumping station system analysis support device according to claim 13, wherein a change in water level is output as the analysis result. 17. The method according to claim 13, wherein a change in the flow rate of water is output as the analysis result.
The drainage station system analysis support device according to any one of 1. 18. The drainage pumping station system analysis support device according to claim 13, wherein a change in the drainage amount of the pump is output as the analysis result.