SU1228082A1 - Device for controlling liquid level in reservoir - Google Patents

Abstract

The invention relates to the field of energy management and can be used to control a drainage installation in coal mines during the hours preceding the maximum consumption of the energy system. The purpose of the invention is to simplify a device for adjusting the level of liquid in a container. To achieve the goal, a device containing sensors of the upper and lower levels, connected by outputs to the corresponding inputs of the control unit, the first output of which is connected to the pump unit, as well as a pulse generator, is connected in series with a timer and a vertical movement drive connected to the sensor input. an upper level, wherein the output of the pulse generator is connected to the timer input, and the second output of the control unit is connected to the second input of the vertical movement drive. 4 silt, O)

Description

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The invention relates to the management of power supply and can be used to control the drainage system in coal mines during the hours preceding the maximum demand of the power system.

The purpose of the invention is to simplify a device for adjusting the level of liquid in a container.

Figure 1 presents the block diagram of the device; in fig. 2 - time diagram of his work; in fig. 3 shows an example of implementation of a vertical displacement drive of a top level sensor; in fig. 4 is a functional block diagram.

The device for regulating the level of the liquid in the tank (Fig. 1) comprises a pulse generator 1, a timer 2, a vertical displacement drive 3, a high level sensor 4, a control unit 5, a low level sensor 6, and a pump unit 7. The vertical displacement actuator ( Fig. 3) comprises an electric motor 8, a gearbox 9, pulleys 10 and 11, a cable 12, a dielectric sleeve 13, a power source 14 and a communication line 15.

The control unit (Fig. 4) contains coincidence circuits 16-18, intermediate relay 19, level switch -20, valve actuator 21, time relay 22, protection relay 23, pump 24 relay, valve actuator relay on opening 25 and closing 26, the limit switch of the overload of the valve actuator 27, the temperature sensor 28, the encoder 29, the decoder 30, and the information display panel 31.

The operation of the device is as follows.

The pulses from the pulse generator 1 are fed to the input of the timer 2, where the current time is taken into account and at the time point T, which is determined from the expression:

.1228082

the upper level sensor 4, which is in the initial state in

fluid level in the tank. The speed (m / min) of movement of the sensor of the upper level 4 towards the place of installation of the sensor of the lower level 6 is determined from the expression:

V. -N-

 open

where H is the vertical distance

between the upper and lower levels of liquid in the tank, m.

15

20

2S

thirty

35

40

45

When the sensor ver 4 reaches the level of the liquid. In the tank, it triggers, the signal from the upper level sensor 4 goes to the input of the control unit where the command to turn on the pumping unit 7 is generated. the maximum consumption of the power system the level of liquid in the tank reaches the location of the sensor of the lower level 6, thus the power supply circuit of the relay of the level 20 of the control unit 5 is broken, the switch-on relay 24 and the pump 7 are disconnected. Simultaneously at the relay output Switching the valve actuator to the closure 26, a signal appears, which activates the valve actuator .21 of the main pipeline (not shown), and the vertical shift 3 actuates to raise the upper level sensor 4. After the upper level sensor 4 has reached vertical movement 3 is turned off, for example, by using a limit switch (not shown) .The device is again in the initial state.

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The control unit 5 contains a limit switch for overloading the valve actuator 27 and a thermal sensor 28, designed to protect the control unit from critical overloads and temperatures, as well as an encoder 29, an encoder 30, and an information display panel 31 for transmitting to remote monitoring the state of the device dp of regulating the liquid in the tank, which are service elements.

t

where is t

 them

- t „

m

start time of the period of maximum consumption of the power system, min;

TOTR pumping time of the pump installation of liquid from the tank from the top to the bottom level, min.

On command from the timer, the vertical movement drive 3 is turned on.

fluid level in the tank. The speed (m / min) of movement of the sensor of the upper level 4 towards the place of installation of the sensor of the lower level 6 is determined from the expression:

V. -N-

 open

where H is the vertical distance

between the upper and lower levels of the liquid in the tank, m.

0

S

0

five

0

five

0

five

When the upper sensor 4 reaches the level of the liquid in the tank, it triggers, the signal from the upper level sensor 4 goes to the input of the control unit 5, where the command to turn on the pump unit 7 is issued. At a given time T (start time the maximum consumption of the power system) the liquid level in the tank reaches the installation site of the low level sensor 6, thus the supply circuit of the level 20 relay of the control unit 5 is interrupted, the pump 24 and the pump 7 are turned off. At the same time, The de-activation of the valve actuator to the closure 26 a signal appears, which activates the valve actuator .21 of the main pipeline (not shown), and the actuator turns on the vertical movement 3 to lift the upper level sensor 4. After the sensor has reached the upper level 4 The vertical water 3 is turned off, for example, by a limit switch (not shown). The device is again in its original state.

I

The control unit 5 contains a limit switch for overloading the valve actuator 27 and a thermal sensor 28, designed to protect the control unit from critical overloads and temperatures, as well as an encoder 29, a decoder 30 and information display panel 31 for transmitting and remotely monitoring the device The dp is the regulation of fluid in capacitance, which are service elements.

Claims (1)

Formula of gaining . A device for regulating the level of liquid in the tank, containing sensors of the upper and lower levels, connected by outputs to the corresponding inputs of the control unit, the first output of which is connected to the pump unit, and a pulse generator that differs from that. Phi.1 that, in order to simplify the device, it contains a serially connected timer and a vertical movement actuator connected to the upper level sensor input, the output of the pulse generator connected to the timer input and the second output of the control unit connected to the second input of the vertical movement actuator.  fJoaotKeHue damwffo SepxHKO ypoSfffi Tetk, Upper ypoSeH / w. 7 //. A /. 0ut.2 V // W7 /////// 7 ////// // y / (. J 2J G- hz tHE -And 7 C23 Lrh Compiled by L. Tsallagova . - ° ° corrector A.ZIMOKOSOV Order 2286/48 Run 836 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, .Raushska nab., d.4 / 5 Production and printing company, Uzhgorod, Project St. tf.