EA042746B1 - WATER METERING DEVICE - Google Patents

Description

The invention relates to devices for measuring flow, in particular, to devices for measuring water flow in buildings and premises. Applicable in devices with automatic data transmission and with the ability to remotely turn off the water supply for non-payment of its consumption by the user of the service. It can be used in residential and office buildings.

When providing services for the supply of water to consumers, the problem is the remote shutdown of water in case of non-payment for services. To shut off water using water meters with automatic flow data transmission, they use electric motors with gearboxes associated with ball valves. The disadvantage of existing designs is the need to consume external power of the order of 50 W per second, for which the electric motor of such a water meter is connected to a 220 V outlet. In addition, the non-paying consumer can turn off the device by disconnecting it from the mains.

Known water meter, made with the possibility of wireless signaling a water leak according to the utility model patent CN 201259434, G01F 1/56, 2009. The alarm device for detecting water leakage and closing the conduit includes a Hall sensor, a timer control module, a transmitter module, a receiver, a switch, transmission connected to a ball valve. Hall sensor and ball valve are installed at the water inlet of the water meter. The water leakage alarm time is set using a timer in the alarm device. Opening and closing of the ball valve is carried out during the time when water flows through the Hall sensor. The transmission of information about the leak is implemented by transmitting and receiving a wireless signal. The disadvantage is the complexity of the device, the inability to turn off the water supply regardless of the leakage alarm, for example, if the user does not pay for water consumption.

Known application of Russia for the invention No. 2016105403, G01D 4/08, 2017 A device for measuring and regulating the release of water. A device for measuring and regulating the supply of water to the consumer, includes a meter for measuring the amount of released water and a control valve. The water meter has a module for remote transmission of measurement results. The device is equipped with an electronic control unit, and the control valve is equipped with an information board and a drive with remote control. The electronic control unit, comparing the information embedded in it on the payment made by the consumer for water with the amount of payment calculated for the actually consumed water based on the readings of the water meter, calculates the balance of payments and continuously transmits its value to the information board of the control valve. When there is a debt to pay for water, the control unit sends a command to the actuator of the control valve in order to reduce the cross section of the pipeline to limit the water supply to the consumer, and this limitation is proportional to the amount of the consumer's debt to pay for water, and also notifies the consumer via the GSM channel about the presence of a debt on payment. The disadvantage is the complexity of the device, its large dimensions, exceeding the size of standard water meters, the need to use an external energy source for its operation.

As the closest analogue to the claimed technical solution, a water meter with remote control of a wireless transmission valve was selected according to the utility model patent CN 210625762, G01F 15/00, 2020. The water meter includes a water meter body, a valve body, a battery pack, an antenna, a counting unit, a drive , a wireless communication module, an infrared radiation receiving and transmitting module, and a control module. The valve body is attached to the outside of the water meter body. The battery pack, antenna, counting unit and drive casing are mounted in the lower part of the housing. The first gear is rigidly mounted on the upper end of the valve stem, the outer side of the first gear is connected to the second gear and the third gear. The outer side of the third gear is connected to the drive. The drive, the first gear, the second gear and the third gear are located in the drive compartment. In addition to being able to control the valve remotely, the operating position of the valve can be adjusted manually using a rotating head and a second transmission gear. The disadvantage is the possibility for the non-paying consumer to open the valve manually after the remote shutdown of the water. In addition, the disadvantage is the large dimensions of the counter, caused by the need to use a sufficiently high power motor with a gearbox to be able to control the position of the valve. This, in turn, necessitates the use of a large-capacity and large-sized battery pack and a change in the length of the connecting pipeline in case the water meter is replaced.

The technical result of the claimed invention is to reduce the size and simplify the design of the device for accounting for water consumption with remote shutoff of its supply, ensuring that the consumer does not have the ability to turn off the device.

The technical result is achieved due to the fact that in the water consumption metering device, containing a housing with an inlet pipe, an internal conduit and an outlet pipe, a counting unit, a shut-off valve of the internal conduit, a device for remote control, a shut-off valve drive with a gear, a battery connected with a drive, according to the invention, the upper end of the piston rod of the shut-off valve interacts with the toothed rack of the gear train, the valve piston is made with two through holes, the axes of which are parallel to the axis of the water

Claims (3)

Yes, the length of the piston stroke to the stroke limiter is equal to the distance between the longitudinal axes of the piston holes, one of the holes contains a locking element of the conduit, the distance from the upper surface of the piston to the axis of the hole with the locking element corresponds to the distance from the piston stroke limiter to the axis of the conduit. The technical result is achieved due to the stop of the upper end of the valve piston rod against the surface of the gear rack of the transmission mechanism. This allows you to release the rod from pressing it with a rail and set the piston of the shut-off valve in motion due to the pressure in the conduit without using energy from the electric motor. The execution of the valve piston with two holes, one of which is free, and in the other there is a valve locking element, for example, a ball, the diameter of which is larger than the conduit hole, instead of the open piston hole, a hole with a locking ball is installed opposite the conduit. Accurate installation of the piston holes opposite the conduit is ensured due to the fact that the piston stroke is limited by the limiter, the maximum length of the piston stroke from its lower position to the limiter is equal to the distance between the longitudinal axes of the holes, and the distance from the upper surface of the piston to the axis of the hole with the locking element corresponds to the distance from the limiter stroke of the piston to the axis of the conduit. This allows you to change the open position of the conduit to the closed one by raising the piston without using energy from the electric motor. The electric motor in the proposed design is necessary only for a one-time movement of the toothed rack in order to release the piston rod. Due to this, it becomes possible to use a micromotor and a battery of low power and size in the device and significantly reduce the dimensions of the device compared to analogues. In addition, the lack of connection of the device with an external power source does not allow the consumer to independently turn off the device by disconnecting it from the network. In FIG. 1 schematically shows a water metering device. In FIG. 2 shows the appearance of the water metering device. The water consumption metering device includes a housing 1, a counting unit 2, a device for remote control 3, a battery 4 connected to a microelectric motor 5, a gear train 6 with a gear rack 7. The housing 1 is made with an inlet pipe 8, an outlet pipe 9, an internal conduit 10 , a shut-off valve 11. The shut-off valve 11 includes a piston 12, a stem 13, a stroke limiter 14 of the piston 12. The piston 12 is made with an upper hole 15, the diameter of which is equal to the diameter of the conduit 10, and with a lower hole 16. A locking element 17 is installed in the hole 16, made, for example, in the form of a ball. The diameter of the locking element 17 exceeds the diameter of the conduit 10. The locking element 17 can be made in the form of a wedge, a hemisphere, etc. The water metering device operates as follows. The device is installed in an external conduit through the flanges of the inlet 8 and outlet 9 nozzles. The device is remotely connected to the base control station via LPWAN radio communication and is controlled by software from the operator's workplace. The Luch base station can be used. The readings of the water flow meter of the counting unit 2 are transmitted once a day. When the consumer stops paying for water consumption, at the command from the base station, a signal is sent to the device for remote control 3. Further, at the signal from the remote control device 3, voltage is supplied from the battery 4 to the micromotor 5. A 3-volt battery is used as the battery 4, for example, FANSO ER 14505H 3.6V., as the micromotor 5, the model ZG1812-07230 can be used -236 with the following electrical characteristics: voltage - 3 V, current - 15 mA. With the help of a gear transmission mechanism 6, the micromotor 5 performs the work of moving the gear rack 7. As a result of the movement of the gear rack 7, the rod 13 of the piston 12 of the shut-off valve 11 is released. located opposite the conduit 10, moves up until it stops in the stroke limiter 14. In this case, the hole 16 is opposite the conduit 10, and the freely moving rubber ball 17 sits under the action of the flow pressure in the valve seat (not shown in the drawing), made in the hole 16 and covers conduit 10. Water supply stops. The small size of the device allows not to exceed the standard length of water meters, which is 110 mm, not to change the length of the connecting external conduit if it is necessary to replace the device. When using the device, water supply organizations do not need to get into the room to turn off the water. Shutdown is carried out remotely. The entire shutdown mechanism is under the seal. Reactivation and cocking of the mechanism is possible only through the breakdown of the seal. Thus, the invention makes it possible to reduce the dimensions of the device and simplify its design, to ensure that the consumer does not have the ability to turn off the device. CLAIM A device for accounting for water consumption, containing a housing with an inlet pipe, an internal conduit and an outlet pipe, a counting unit, a shut-off valve of the internal conduit, a device for discharging -