RU116228U1 - DEVICE FOR MEASURING FLUID AND HEAT CONSUMPTION - Google Patents

Abstract

1. A device for measuring the flow rate of liquid and heat, containing an impeller installed in the housing, a speed sensor, a control and calculation unit based on a microcontroller, a liquid crystal indicator, a communication unit with a computer and a power supply unit, characterized in that it includes: direction transmission reducer rotation of the shaft into a device, a DC generator, a battery, a control panel and a radio channel with the following connections: the impeller output shaft is connected through a gearbox to a DC generator and to a shaft / code converter, the generator output is connected to the battery, and the output of the shaft / code converter is connected to the first input of the microcontroller, the second input of which is connected to the output of the temperature sensor located near the impeller, the third input of the microcontroller is connected to the output of the control panel, and the output of the microcontroller is connected by the first output to the input of the LCD indicator, and the second output to the radio channel modem. ! 2. The device according to claim 1, characterized in that the shaft / code converter can be performed using Hall sensors. ! 3. The device according to claim 1, characterized in that, as a meter of the amount of heat, it contains two channels for measuring temperature: the first at the inlet of the heating source, and the second at the outlet, both channels are interconnected by radio channels, the first channel being the leading one, and the second - slave.

Description

The utility model relates to measuring technique and can be used to measure fluid flowing through a pipeline per unit time, for example, per second or minute, as well as the total flow rate for a period of time, for example, a month.

It is preferable to use this device to control the flow of hot and cold water, as well as heat in housing systems.

The well-known hot and cold water meters installed in apartments. These counters are based on a purely mechanical principle: a turbine, a reducer, a mechanical turbine speed counter connected with the counter dial through a specific gear ratio, taking into account the turbine speed per unit time, gear ratio of the gearbox and gear ratio of the dial itself, see RF patent for invention No. 2394210 "Turbine meter", which is designed to measure the flow of fluids, in particular water. A turbine with a hub and a plurality of radial blades and a holding insert, consisting of a water-guiding cross and the main body of the insert, are located in the channel of the housing. The crosspiece contains a hub, radial struts, a nozzle body that surrounds the front of the turbine. The turbine blades are located near the nozzle body. The nozzle ring connects the blades and covers the outer contour of the nozzle body with the formation of a nozzle gap, which is associated with the gap between the nozzle body and the front of the turbine. The device serves to connect the turbine with a counting measuring mechanism. The gap and nozzle gap direct the fluid so that the turbine begins to rotate even at the very minimum flow of fluid and already at the minimum flow maintains its position behind the crosspiece without the need for any supports.

The disadvantage of this counter is:

- the inability to automatically transfer measurement data to a central console for collecting information for accounting;

- does not provide information on the current flow rate of the flowing fluid, for example, the number of liters per second;

- also it does not measure the current temperature of the liquid.

The well-known "Method of measuring fluid flow and a device for its implementation" according to the patent of the Russian Federation for invention No. 2353904, the meter for accounting for water contains an impeller with two magnets and a temperature sensor installed inside the housing with input and output pipes, a magnetic field sensor, a signal conditioning unit from the sensor temperature, timer, control and calculation unit based on a microcontroller, a memory register for storing the measured total amount of hot water, memory register for storing the measured total amount odes a temperature less than 40 ° C, accounted for as a cold water, a liquid crystal display for displaying the flow of hot and cold water in weight units, the switch liquid crystal display for the possibility of separate readout. The invention provides improved measurement accuracy by taking into account the temperature-dependent coefficient of conversion of the frequency of the magnetic field sensor to the liquid flow rate, and also increases the reliability of calculations between the consumer and the manufacturing organization.

The disadvantage of this device is:

the dependence of its operability on an external power source, as well as the absence of telemetric data transmission to a data collection point.

The prototype is the RF patent for invention No. 233,320, which contains an impeller installed in the body cavity with two magnets diametrically located on it, a Hall sensor mounted on the outer part of the body above the path of the magnets during rotation of the impeller, a pulse power supply forming unit for the Hall sensor, a control unit and calculations based on a microcontroller, a conversion factor optimization unit, a timer, a liquid crystal display, an electrical power source, a computer communication unit.

With all the successful electronic circuitry, the prototype has the following disadvantages:

- the presence of an external power source, for example, a household AC network, which requires a source of uninterrupted power, as with computers;

- the absence of a temperature meter for the flowing fluid, which prevents its use in the heat meter system.

The technical task of the utility model is the expansion of functionality due to: the introduction of an independent power source, radio channel and temperature meter.

To solve this problem, a device is proposed for measuring the flow of liquid and heat, containing an impeller installed in the housing, a speed sensor, a control and calculation unit based on a microcontroller, a liquid crystal display, a computer communication unit, and a power supply unit, characterized in that it includes: a gearbox for transmitting the direction of rotation of the shaft to the device, a DC generator, a battery, a control panel and a radio channel with the following connections: the impeller output shaft is connected to the impeller through a gearbox the DC generator and the shaft / code converter, the output of the generator is connected to the battery, and the output of the shaft / code converter is connected to the first input of the microcontroller, the second input of which is connected to the output of the temperature sensor located near the impeller, the third input of the microcontroller is connected to the output of the control panel, and the output of the microcontroller is connected to the input of the LCD indicator and the radio channel modem; the shaft / code converter can be made with a Hall sensor in the form of rotating magnets located above the impeller housing, and the gearbox can be excluded; as a measure of the amount of heat, the device contains two channels for measuring temperature: the first at the input of the heating source, and the second at the output, interconnected via a radio channel, the first channel being the leading and the second being the slave.

Figure 1 shows a structural diagram of a device for measuring the flow of hot or cold liquid, figure 2 - the amount of heat, for example, spent on heating the apartment, the diagrams show: 1 - a turbine (impeller) located in the device with an inlet and outlet pipe, 2 - gearbox, 3 - DC generator, 4 - battery, 5 - shaft / code converter, 6 - microcontroller (MS), 7 - radio channel modem, 8 - LCD indicator, 9 - temperature sensor, 10 - control and input panel MS operating mode, 11 - the device itself (11-1 - the first channel, 11-2 - in Ora channel 7-1 - leading RB, 7-2 - slave radio) 12 - teplokanal (heating source).

Schemes have the following connections.

A device for measuring the flow of fluid and heat, comprising an impeller 1 installed in the housing, a speed sensor, a control and calculation unit based on a microcontroller 6, a liquid crystal indicator 8, a computer communication unit and a power supply unit, characterized in that it includes: a gearbox 2 transmitting the direction of rotation of the shaft to the device, the DC generator 3, the battery 4, the control panel and the radio channel with the following connections: the output shaft of the impeller 1 through the gearbox 2 is connected to the DC generator 3 and with a shaft / code 5 generator, the output of the generator 3 is connected to the battery 4, and the shaft / code 5 converter output is connected to the first input of the microcontroller 6, the second input of which is connected to the output of the temperature sensor 9 located near the impeller 1, the third input of the microcontroller 6 is connected to the output the control panel 10, and the output of the microcontroller 6 is connected by the first output to the input of the LCD indicator 8, and the second output to the modem of the radio channel 7; the shaft / code 5 converter can be made on Hall sensors or in the form of rotating magnets located above the impeller housing 1, and the gearbox 2 can be excluded; as a measure of the amount of heat, it contains two channels for measuring temperature: the first at the input of the heating source 12, and the second at the output, interconnected via a radio channel, the first channel 7-1 being the lead, and the second 7-2 being the slave.

The device operates (see figure 1) as follows.

A liquid (for example, water) passing through the inlet pipe acts on the impeller 1, and the impact force is proportional to the frequency of rotation of the impeller and, therefore, the flow rate of the water.

When the impeller 1 rotates, its output shaft through the gearbox 2 transmits (through the gear ratio of gearbox 2) the rotation to the shaft / code converter 5 and to the DC generator 3, which generates voltage for charging the battery 4 (a voltage limiting circuit is located at its input and current, which is not shown in Fig.) The voltage from the output of the battery 4 is supplied to all electronic parts of the device, thereby the latter does not need an external power source: from replaceable batteries or a secondary power source from a network ~ 220 V, 50 Hz.

The output signals from the output of the shaft / code converter 5 in the form of a digital code are sent to the first measuring input of MS 6, which processes it and provides information on the LCD indicator 8 and on the radio channel modem 7, for transmission to the base station, for example, as a serial RS code -232. At the second input of the MS 6 receives digital signals from the sensor for measuring the temperature of the water 9, which are also transmitted to the base station gj radio channel. The control panel 10 is used to enter the initial data, data optimization of water flow, program changes, etc. MS 6.

Alternatively, gearbox 2 can be omitted, and the shaft / code 5 sensor can be placed on the impeller housing 1 in the form of a magnetic rotation sensor (speed), in this case, one pulse is generated per revolution of the impeller shaft.

In the measurement mode, the amount of heat used for heating, for example, an apartment (see figure 2) uses two devices of figure 1. In the first leading channel, the temperature of the inlet hot water is continuously measured, and in the second, the slave channel, the outlet of hot water, the channels are interconnected by radio channels 7-1 and 7-2, and the leading 1st channel is additionally connected by its radio channel to the base station. The amount of heat spent on heating the apartment is determined from the processing of three parameters: the temperature difference, the amount of flowing hot water and time.

It should be noted that with this inclusion of two channels, the leakage of hot water is easily determined if the amount of inlet and outlet hot water is not equal to each other.

Thus, the proposed device has a great advantage due to independent from external conditions of autonomous power and the ability to determine the amount of heat spent on heating.

Claims (3)

1. A device for measuring the flow of liquid and heat, comprising an impeller installed in the housing, a speed sensor, a control and calculation unit based on a microcontroller, a liquid crystal display, a computer communication unit and a power supply unit, characterized in that it includes: a directional transmission reducer rotation of the shaft into a device, a direct current generator, a battery, a control panel and a radio channel with the following connections: the impeller output shaft is connected through a gearbox to a direct current generator and to a converter shaft / code, the output of the generator is connected to the battery, and the output of the shaft / code converter is connected to the first input of the microcontroller, the second input of which is connected to the output of the temperature sensor located near the impeller, the third input of the microcontroller is connected to the output of the control panel, and the output of the microcontroller is connected to the first an output with an LCD indicator input, and a second output with a radio channel modem. 2. The device according to claim 1, characterized in that the shaft / code converter can be made using Hall sensors. 3. The device according to claim 1, characterized in that as a measure of the amount of heat it contains two channels for measuring temperature: the first at the input of the heating source, and the second at the output, both channels are connected by radio channels, the first channel being the lead and the second - followers.