Method of development of hot water counter and device for its implementation

FIELD: measuring equipment.

SUBSTANCE: method of development of a hot water counter is based on using the device for switching on and off of the calculating mechanism for flowing hot water count. The calculating mechanism is switched on and off by connection and disconnection of interaction of a master and slave semi-couplings by a device containing details from nitinol - memory metal, which is used to switch on magnetic interaction of the master and slave magnetic semi-couplings as hot water flows along the counter , and to switch off magnetic interaction of the master and slave semi-couplings as cold water flows along the counter.

EFFECT: increased reliability of counter operation.

3 cl, 4 dwg

This solution applies to the accounting system hot fluid (e.g. water) as for industrial plants, where there is the need for accurate records of supplies hot water to the consumer, and for individual consumers of apartment buildings.

By the decree of the RF Government dated 06.05.2011, No. 354 hot water temperature should not be below 60°C and not above 75°C in accordance with paragraph 2.4. SanPiN 2.1.4. 2496 - 09. There are currently certified counters metering hot and cold water type SCM, the NATURE of the state Duma, STUG, VMG, and others.

Any water meters of this type consists of 3 main parts: a housing, an impeller (turbine) and the counting mechanism. The principle is based on the fact that water passing through the housing, rotates the blades located therein the impeller (turbine) with a speed proportional to the flow rate. The rotation of the impeller coordinated with the rotation of the leading magnetic coupling, which simultaneously transmits rotation through a sealed non-magnetic wall of the housing on the driven part of the magnetic coupling installed in the counting mechanism. The counting mechanism having scaling mechanical gearbox, provides the translation speed of the impeller flowing in the measured volume of water (in cubic meters and in fractions of a cubic meter). Similar counter of this type with turbine reinforcement of the ten through ACE No. 947887. The hot water meters of this type do not allow to distinguish which part of the water passed through them at the rate of hot and what part the water was cold, such as below 50°C.

Known water meter with sensor 4-tariff electronic LP-4T, which consists of an electronic calculator LP, digital temperature sensor DT05 and two converters - PWG to be installed on the hot water pipeline and PR to be installed on the cold water supply pipe. Electronic calculator calculates the amount of consumed water, and writes the calculated value in the appropriate tariff the cell based on the actual temperature of the hot water. Volume values are recorded on an accrual basis. This tariff cells V..<40°C" values are not taken into account, from the tariff cells V.. 40-44°C values are taken into account with a factor of 0.7, tariff cells V.. 45-49°C" values are by a factor of 0.9, the tariff cells V..>50°C values are taken into account with a factor of 1.0. The price of the underlying set of a hot water meter with sensor and transmitter is 8.000 to 9.000 rubles. This accounting method and device for metering hot water expensive, structurally complex and difficult to operate for consumers and regulatory bodies.

The proposed method of forming a counter hot water and remove the STV for its implementation addresses the shortcomings of the existing method of metering of hot water and allows the use of small structural modification of existing certified hot water meters type SCM, the NATURE of the state Duma, STUG, VMG, and other similar.

The purpose of this technical solution are:

- reducing the number and weight of components hot water meters with new methods;

- exclusion from new counters, hot water element power;

the exception of the new hot water meters electronic elements;

- reducing the complexity of manufacturing hot water meters and the total cost of the new hot water meters, as well as the operational costs associated with their maintenance.

This is achieved by the fact that the hot water meters type SCM, the NATURE of the state Duma, STUG and VMG install device that disables the interaction between the leading and the trailing magnetic coupling sleeve when passing through the water meter below 50°C and includes the interaction of the leading and the trailing magnetic coupling sleeve when passing through the water meter 50°C and above.

The interaction between the leading and the trailing magnetic coupling is due to the interaction of their magnetic elements through a nonmagnetic thin wall most of the brass alloy, which made the meter case. To turn off the interaction between the leading and the trailing magnetic coupling in two ways:

- increase the distance between the magnetic elements of the leading and the trailing magnetic coupling halves,

- to slow down (from what, turn) driven magnetic coupling.

In engineering the known properties of the alloy nitinol. Wire or plate, is deformed from its original position in a cold state, when heated return an unlimited number of times in its original position, and when cooled is returned in the same deformed position. Alloy nitinol - the alloy of titanium and Nickel. Depending on the percentage of titanium and Nickel from 45% to 55% is changed and the temperature interval of restoring the original shape of the alloy.

The first way off the interaction between the leading and the trailing magnetic coupling halves.

Leading the magnetic coupling is performed in the form of two rods from nitinol, one end of which is attached to the impeller, and the other ends of the rods attached magnetic elements, interacting with the magnetic elements driven magnetic coupling. Prior to Assembly of the counter nitinol rods leading coupling is deformed, providing a magnetic independence from slave coupling. While passing through the water meter below 50°C collected in the counter leading magnetic coupling with deformed nitinol rays does not interact with known magnetic coupling as the magnetic elements leading and driven parts of the coupling separated from each other and their magnetic fields do not interact. While passing through the water meter 50°C and above deformers is installed nitinol rays with magnetic elements on the leading ends of the magnetic coupling are returned in the original (undeformed) position - nitinol rods are returned to the initial position, the magnetic elements leading the coupling halves are in the zone of interaction between the driven magnetic coupling and the driven magnetic coupling actuates the counting mechanism. The counter counts the quantity of flowing water above 50°C.

The second way off the interaction between the leading and the trailing magnetic coupling halves.

The driven magnetic coupling stop deformed nitinol plate, which when heated at 50°C and higher returns to its original position and releases to rotate the driven magnetic coupling, which during the rotation actuates the counting mechanism. Nitinol plate shutters and the driven magnetic coupling, fixed on a non-magnetic wall of brass alloy, which has high thermal conductivity. When passing through the water meter 50°C and above non-magnetic sealed wall of brass alloy together with nitinol plate is heated. Nitinol plate, heating up to 50°C, returns to its original position and releases the driven coupling half, which actuates the counting mechanism, taking into account the amount of flowing water 50°C and above.

The figure 1 shows the counter hot water when passing through the water below 50°C (leading coupling half off).

In the figure 2 image of the EN counter hot water when passing through water at 50°C and above (leading coupling included).

The figure 3 shows the hot water meter with brake when passing through water below 50°C (slave coupling is disabled).

The figure 4 shows the hot water meter with brake when passing through water at 50°C and above (slave coupling included).

The hot water meter consists of a housing 1, an impeller 2, a sealed septum of brass alloy 3, the magnetic elements 4 to the leading coupling, magnetic elements 5 for slave coupling, the shaft of the counting mechanism 6 mechanism 7, nitinol rod 8 (Fig 1, 2 for the device of the first mode of interaction of magnetic coupling) and nitinol plate 9 (Fig 3, 4 for the device of the second mode of interaction of magnetic coupling).

The hot water meter according to the first way on-off interactions leading and the trailing magnetic coupling operates as follows. With the passage of water below 50°C in case 1 (see figure 1) rotates the impeller 2 with magnetic elements 4, but they do not interact with magnetic elements 5, since the deformation of the nitinol rods 8 violated their interaction. When the water passes 50°C and above (see figure 2) nitinol rods 8 are returned in the original (undeformed) position and enables the interaction of the magnetic elements 4, 5 of the magnetic coupling and driven half coupling shaft 6 drives the accounts the economic mechanism 7.

Counter hot water on the second way on-off interactions leading and the trailing magnetic coupling operates as follows. With the passage of water below 50°C through the housing 1 (see fig.z) rotates the impeller 2 with magnetic elements 4, but they interact with the magnetic elements 5 slave coupling, does not rotate, because the deformed nitinol plate 9 holds its rotation, and the counting mechanism 7 does not work. When the water passes 50°C and above (see figure 4) nitinol plate 9 is returned in the (undeformed) initial position, releases the driven coupling half (on the interaction of the magnetic elements 4, 5 of the magnetic coupling and driven half coupling shaft 6 drives the counting mechanism 7, which takes into account the consumption of water of 50°C and above.

This method of formation of a hot water meter allows you to:

- reduce the weight and cost of the components of the accounting system of hot water;

- to exclude from the design of the hot water meter elements of power;

- to exclude from the design of the hot water meter electronic components;

to increase the reliability of the counter for accounting for the consumption of hot water by reducing the number of elements of the system and by eliminating elements of the accounting system, affecting the reliability of the counter.

1. The method of forming the Oia counter hot water, namely, that the meter case is made airtight with an inlet and outlet, inside of it with a propeller or turbine, synchronously rotating with it the flow of water leading magnetic coupling with the magnetic elements, pass leading magnetic coupling of the magnetic elements of the torque magnetic moment through the non-partition on the driven magnetic coupling, which transmits the rotation of the counting mechanism, taking into account the amount flowing hot water, characterized in that the on-off magnetic interactions leading and the trailing magnetic coupling is carried out using devices containing parts made of nitinol - memory metal, which include magnetic interaction between the leading and the trailing magnetic of the coupling with the flow on hot water meter on and off the magnetic interaction between the leading and the trailing magnetic coupling with the flow on the meter cold water.

2. The accounting device flow quantity of hot water containing a sealed housing with an inlet and outlet, inside impeller, synchronously rotating with it the flow of water leading magnetic coupling with the magnetic elements, the transmitting torque of the magnetic moment through the non-partition on the driven magnetic coupling, which transmits the rotation of the accounts the mechanism, taking into account the amount flowing hot water, characterized in that the on-off magnetic interactions leading and the trailing magnetic coupling performed by the device at the leading magnetic coupling containing nitinol rods, one ends attached to the impeller, and the other ends attached to magnetic elements, interacting with the magnetic elements driven magnetic coupling with the flow of hot water, and during the flow of cold water nitinol rods, cooled, return to the original deformed position, excluding the interaction of the magnetic elements leading and driven parts of the coupling and disables the counting mechanism.

3. The accounting device flow quantity of hot water containing a sealed housing with an inlet and outlet, inside impeller, synchronously rotating with it the flow of water leading magnetic coupling with the magnetic elements, the transmitting torque of the magnetic moment through the non-partition on the driven magnetic coupling, which transmits the rotation of the counting mechanism, taking into account the amount flowing hot water, characterized in that the on-off magnetic interactions leading and the trailing magnetic coupling is performed by a device in the form of deformed nitinol plate, ustanavlennaya sealed wall with the outer side and which is deformed part due to elastic effects stops the driven magnetic coupling and the counting mechanism during the flow of cold water, and during the flow of hot water nitinol plate takes the undeformed (initial) position, free to rotate the driven magnetic coupling and synchronously rotating with the shaft of the counting mechanism, taking into account the flowing hot water.