SU446079A1 - Device for simulating flow rates and levels in river beds and canals - Google Patents

Description

(54) DEVICE FOR PEOPLE FLOWS AND WATER LEVELS IN RIVERS AND CHANNELS

... 3

Denia is connected to the first normally closed key connected to the zero potential bus, and the second byte of the modern circuit is connected to the first control output of the set target water flow unit in the closing point, the initial conditions of which are connected to the fourth input of the coincidence circuit and the inputs of the second normal / closed key and the first normally open key, the output of which through the second normally open key is connected to the second control output of the set task set water flow in the circuit yuschem alignment, which upravlshoschy third output to output a second ..klyuchen normalnO.zamk-. nutya key. The control inputs of the keys are connected to the corresponding control inputs of the unit, which determine the flow rate from the water supply to the gateway.

FIG. Is a block diagram of a device for modeling flow and water levels in river beds and canals; in fig. 2 is a block diagram of a building block of established water flows in a closing point.

The device contains a building block of hydrograph in the input station 1, a control unit 2, a unit for modeling the hydraulic characteristics of the river bed 3, a scale setting unit for recording rhesus tats 4, a recording unit 5, a unit report machine units BpeNieHH 6 and setting the established flow rates of the joint with target 7,

The block set the established water flow in the closing point contains

normally closed keys 8 and 9, nor-. the fully open keys 10 and 11,

control inputs 12–15, control output 16, input of initial conditions 17, coincidence circuit 18, control output 19, zero potential bus 20, threshold element 21, power supply 22, initial input 23 and control input g4.,

The device works as follows.

In the initial position to the control inputs 12 and 13 are normally closed.

keys 8 and 9 and control inputs 14 and 15 normally open keys 1O and 11 of block 7 are served by iHan SKeHHil

Therefore, keys 8 and 9 are open,

KDK1CHI 10 and ii are closed. The key is open as keys 8 and 9, the zero potential bus 20 is disconnected from the input of coincident IN 18, so the first input of the cxeNODi is disconnected from the power supply source 22, and the second is from the head of the control unit 17.. ., Ur - before starting the calculations of the movement of water in the beds of rivers and canals, set-.

values of stresses simulating the Pb water passages, at which must e and f. with the parameters of the block modeling of the hydraulic characteristics of the river bed 3,

i 3jajeMjio The input of the initial conditions 17 is applied to the voltage that simulates the setting

; Water flow rates, and in block 1, a voltage is infused equal to the sum of installed and unspecified water flow values, i.e. it is collected io

 travel hydrograph.

j When applying voltage, model. ;

I, which are determined by the flow rates of water, it enters through the control unit 2 to the input of the unit 3, and, consequently, to the closing points of the simulated areas. In this case, the threshold elements (not shown) of unit 3 are triggered, and in accordance with the specified conditions, parameters are simulated in each circuit that simulate the hydraulic characteristics of the river. From the output of unit 3, a voltage is applied to the information input of unit 7, which simulates the fixed costs information input 23.t thresholds-p element 21). The threshold element 21 is triggered and the power source 22 is disconnected from the first input of the matching circuit.

18. : ,.; .. ..- ...

Thus, cxesia coincidence 18 is blocked by two-way inputs.

The keys 8 and 9 are open, and the zero potential 2 O bus is disconnected from the input of the matching circuit 18, besides the power source 22 is disconnected from the other input of the circuit, therefore the input of the initial conditions 17 is connected to the input of the block 3 via the keys Yu and 11 and the control block 2.

To enter the initial hydrograph in block 3, press the Start button (not shown) of the device. When this button is pressed, the control inputs 14 and 15 of the keys 1O and D. are de-energized. In this case, both 9 are closed, and klx at 10 and 11 are opened. When the key 9 is closed, the zero potential bus 20 is connected to the input of the coincidence circuit 18t, and when the clips 1O and 11 are opened, the voltage that simulates the steady water flow is disconnected from the control input 24 of the unit 7 and connected via the key 8 to the control output 16 When voltage is applied, which simulates the initial hydrograph, to the input of block 3 in: a transient occurs, which is transformed by the water-to-flow process. When the flow rates are reached, the parameters simulating hydraulic characteristics ki at sites channel automatically vary. Obviously, if the values of the established water flow rates are equal to Cgl, which is greater than the water flow rates at which the parameters of block 3 should change, then with the introduction of the initial conditions these pairs; meters are automatically set before the start of calculations. When the block 3 reads the coefficients of the coefficients from the hydrograph reference block in the input point 1, the direction inputs of the keys 8 and 10 are applied. In this case, the key 8 is disconnected by disconnecting the input of initial conditions 17 from the first group of coefficient adjusters (not shown) of the hydrograph reference unit in the input of the probe 1, and kto 1O closes, and the voltage input to the input of the block 3 from the second group of adjusters continues coefficients (not shown). Upon further polling of the coefficient adjusters, a voltage is applied to the control input 15 of the key J. 1. In this case, the key 11 is closed, and the value of the initial conditions is connected to the PS of the Negridnegle as the second group of frequency adjusters (1x1) shiento. Therefore, when returning to the initial position, the voltage corresponding to the steady-state water flow rate is applied to the input of unit 3. If only a part of the coefficient setting controls are used for the r-hydrograph set, then the voltage on the information input 23 of the threshold element 21 is zero when interrogating the non-included setting factors. In this case, the threshold element 21 supplies the voltage from the power supply 22 to the input of the coincidence circuit 18. The coincidence 18 operates and blocks through its own output by applying the same voltage to its first input. With this, to the second input of the coincidence circuit 18, and cniejaoBattelno, K9, the second input of the block 3 is connected to the input of the initial conditions 17. When the setters of coefficients return to the initial state, the voltage is applied to the control input of the key 9. The key 9 is triggered, and the zero zero potential 20 is disconnected from the input of the coincidence circuit 18. In this case, the input of the initial conditions 17 is disconnected from the second output of the coincidence circuit 18. But since returning the factors setters, the keys 1O and 11 are closed, the input of the initial conditions 17 connects to the last row of the second group of factor adjusters and, via control unit 2, connects to the input of unit 3. 1 to the hydrograph in the input target, the control unit, the model unit for the hydraulic characteristics of the river bed, the task setting unit for the results recording and recording unit, to the second input of which the machine unit of time is connected, in order to extend the functionality , it contains a block for setting water flow rates in the closing point, the outlets of which are connected to the inputs of the hydrograph set block, and a block for modeling hydraulic characteristics the river bed, and the input is connected to one of the outputs of the block modeling the hydraulic characteristics of the river bed, 2. The device according to claim 1, stating that the task block of the installed water flow in the closing section contains two normally-isaMK- and normally: open key, coincidence circuit, threshold element and power source, the output of which is connected to the first inputs cxeNibi match to the threshold element, the second input of which is connected to the information input of the task setting unit the target, and the output is connected to the second input of the coincidence circuit connected to its first output; To the third input of the coincidence circuit is connected the first hole, 1-way, closed key.

7 ..,

connected to the zero-potential, and the second inlet of the coincidence circuit is connected to the first control output of the unit, setting the established water flow in the closing chamber, the input of which is connected to 1o even. by twisting the input of the coincidence circuit and the input of the second normal yIK of the LIKE key. and the first normally open-open key, the output of which is through the second normal;

§

L

an open key is co-iny with the second control output of the set unit for set-up of water flow in the closing point, the third control output of which is connected to the output of the second normal (set key); the control inputs of the keys are connected to the corresponding control inputs of the set-point set cost water in the .aaf closing point

Fig