Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
  • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
  • G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
  • G01F1/075—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
  • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
  • G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
  • G01F1/075—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
  • G01F1/0755—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device with magnetic coupling only in a mechanical transmission path
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
  • G01F15/06—Indicating or recording devices

Definitions

• the invention relates to the construction, and specifically to the counting unit of the water meter, designed for cold or hot water supply for various purposes, mainly household, as well as its electrical circuit.
• the water meter counter unit is mounted on the metal body of the water meter, waterproofed from its passage channel included in the pipeline system, where the impeller is located kinematically connected to the magnetic coupling half, interacting with the counter magnetic coupling half of the water meter counter block, which ensures the flow rate of the water flowing through the passage channel of the water meter body.
• a known water meter counter unit comprising a housing, a mechanical digital readout device providing a visual indication of the water meter readings, a magnetic coupling half of the meter assembly installed in the housing with the possibility of rotation and magnetic interaction with a response magnetic coupling coupled to the impeller located in the passage channel of the water meter housing, a reducer kinematically connecting the magnetic coupling half of the counting unit with a mechanical digital reading device, a permanent magnet fixed eccentrically on one of the gearbox wheels, as well as a normally open reed switch installed in the housing with the possibility of periodic magnetic interaction with a permanent magnet, and two outputs of the electric circuit of the water meter connected to two contacts of the reed switch and designed to be connected to a remote electronic metering system for water flow ( CN 2331961 Y, IPC G01F 1/56, 1999).
• remote reading of the readings is provided by an external electronic system to which the conclusions of the electric circuit of the water meter are connected for counting impulses from a reed switch arising due to the periodic closure of its sealed contacts under the influence of a magnetic field from a permanent magnet rotating on a gear wheel on which this permanent magnet is fixed.
• the pulse counter to which the reed switch of the known water meter counter is connected, receives signals according to a simple relay circuit, which does not allow monitoring the state of the connection line itself for a break or short circuit.
• Such monitoring of the condition of the connection line allows providing a different electric circuit of the water meter in accordance with the NAMUR standard (DIN EN 50227, DIN 192234).
• This scheme provides for the inclusion in the circuit parallel to the reed switch of the load resistor circuit, as well as the inclusion of a load and break resistor in series with the reed switch.
• the counting unit of the water meter When the counting unit of the water meter provides such an electric circuit of the water meter, then it can be provided both counting the number of short circuit of the reed switch and monitoring the open and short circuit of the connection line for various current values.
• the counting unit of the water meter not all external electronic systems allow you to connect water meters according to a circuit with determining the current value, in connection with which it is advisable to use an electric circuit of the counting unit of the water meter, which allows you to connect it both according to the relay circuit and the circuit with determining the current value to monitor the status of the connection line .
• This well-known circuit of the water meter contains a series-connected readout normally open reed switch mounted in a housing of non-magnetic material of the counting unit of a water meter with the possibility of periodic magnetic interaction with a permanent magnet rotatably mounted around the circle to carry out a closing-opening cycle eccentrically on a wheel that is kinematically connected to the impeller in the passage channel of the water meter body, and a load resistor, two terminals of the water meter electrical circuit, one of which is connected to a readout normally open reed switch, and the second to a short-circuit load resistor, as well as a pair of pa Allelic normally open magnetic reed switch signaling the impact and load resistor circuit by the magnetic action which on the one hand are connected to the resistor circuit loads (concluded associated with it), and the other - an additional conclusion circuitry water meter.
• a normally open magnetic signaling reed switch is located out of reach of a permanent magnet that is sufficient for its operation.
• the technical result consists in expanding the arsenal of means for taking readings of the water meter in the form of a water meter counting unit, as well as in the form of a water meter electrical circuit that allows you to connect the water meter to a remote electronic metering system according to a circuit with control by the value of the open circuit and short circuit of the connection line, as well as with the ability to signal an external magnetic effect on the water meter.
• the counting unit of the water meter saves mechanical readout with visual indication.
• the electric circuit of the water meter ensuring the achievement of the technical result, contains:
• a normally open magnetic contact signaling reed switch is located in a body of non-magnetic material, out of reach of a permanent magnetic field sufficient for its operation.
• the magnitude of the electrical resistance of the load resistor and open circuit exceeds the magnitude of the electrical resistance of the load resistor short circuit, which, in turn, exceeds the magnitude of the electrical resistance of the load resistor magnetic impact.
• the value of the electrical resistance of the load and break resistor can be equal to 5.6 kOhm
• the value of the electrical resistance of the load resistor of the short circuit is 1.0 kOhm
• the value of the electrical resistance of the load resistor of the magnetic effect is 400 Ohms.
• the conclusions of the electric circuit of the water meter can be made in the form of two wires removed from the enclosure of prisoners into a common electrical insulating sheath.
• FIG. 1 shows the assembly diagram of the counting unit of the water meter
• - figure 2 shows the kinematic diagram of the counting unit of the water meter
• - Fig 3 shows a circuit diagram of a water meter
• FIG. 4 shows the location of the readout normally open reed switch and normally open reed signaling signaling the magnetic effect in the body of the counting unit of the water meter.
• FIG. 5 shows a diagram of the current display in normal readout, open, short circuit and blocking by external magnetic action.
• the water meter counter unit includes:
• a mechanical digital readout device 2 mounted in the housing 1, with kinematically connected wheels 3 located on the same axis with numbers on the side surfaces to indicate the value of the flow rate;
• the electric circuit of the water meter includes (Fig.Z):
• the electric circuit of the water meter may contain two or more pairs of normally connected normally open reed switches of magnetic signaling and magnetic load resistors, which will make monitoring the blocking of the water meter more reliable and reliable (each specified pair consists of from one normally open reed switch for magnetic signaling and one magnetic resistor load resistor twia).
• a normally open magnetic contact signaling reed switch 15 is located in the housing 1 of non-magnetic material, beyond the reach of the magnetic field of the permanent magnet 9, sufficient for its operation.
• the electrical resistance of the load and break resistor 14 is 5.6 kOhm
• the electrical resistance of resistor 1 1 of the load circuit is 1.0 kOhm
• the electrical resistance of resistor 16 of the magnetic load is 400 Ohms.
• the values of the electrical resistances of the resistors 1 1, 14, 16 may differ from those indicated.
• the condition for choosing the values of electrical resistances is that the electrical resistance of the load resistor 14 and the break exceeds the value of electrical resistance the load resistor 11, which, in turn, exceeds the value of the electrical resistance of the load resistor 16 of the magnetic effect. When this condition is met, the operation of the electric circuit of the water meter is ensured in accordance with the diagram presented in Fig. 5, which shows how the current meter can be judged by the magnitude of the current.
• Tracking of operating modes is carried out in automatic mode by an external electronic system to which an electric circuit of a water meter made in accordance with the invention is connected.
• Conclusions 12 and 13 of the electric circuit of the water meter are made in the form of a cable 17 withdrawn from the housing 1 in the form of two insulated wires enclosed in a common electrical insulating sheath, which are used to connect the electric circuit of the water meter to an external electronic system. Due to the location of the permanent magnet 9 on the drive wheel 8 of the mechanical digital reading device 2, pulses are generated synchronously with the operation of the mechanical digital reading device 2, which simplifies debugging and monitoring the operation of the flow metering system.

Landscapes

• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• General Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Measuring Volume Flow (AREA)
• Details Of Flowmeters (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50068409

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (1)

Citations (4)

Family Cites Families (4)

• 2012
  • 2012-08-10 RU RU2012134265/28A patent/RU2512693C2/ru active
  • 2012-12-20 WO PCT/RU2012/001089 patent/WO2014025286A1/ru active Application Filing
  • 2012-12-20 EA EA201400446A patent/EA024550B1/ru not_active IP Right Cessation
  • 2012-12-20 UA UAA201402628A patent/UA109827C2/ru unknown
  • 2012-12-20 CN CN201280071656.1A patent/CN104220849A/zh active Pending

Patent Citations (4)

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