SU40009A1 - Device for measuring the amount of heat given off by the coolant - Google Patents

Description

The invention relates to a device for measuring the amount of heat given off by a coolant, in which the amount of heat is measured by an electric meter, in one winding of which resistance is changed, depending on temperature, and in winding - resistance, which changes depending on the amount of time per unit heated medium, measured by the pressure difference on the sides of the diaphragm or venturi. In the proposed device, in order to take into account the coolant velocity in the return heat line, an additional winding is applied, fed by a current proportional to the coolant velocity in the return pipeline, and connected in the opposite direction to the winding of the meter fed by a current proportional to the coolant velocity in the straight pipeline.

In FIG. 1 depicts the scheme of the proposed device: FIG. 2 is a longitudinal section of a differential rheostat; and FIG. 3 is a longitudinal section of the resistance, which varies depending on the temperature of the coolant.

In the direct pipeline 1 (Fig. 1) and in the return pipeline 2, resistors 3, 3 are connected, from which the wires are directed to the bark of the counter 4; the wires from the two windings of this counter are connected to two differential rheostats 5. 5, the internal cavities of which communicate with the Venturi nozzles 6, 6 connected to the direct and reverse pipelines. In the circuit of the counter 4 and the resistors 5, 5 included disconnecting relays 20, 20.

Differential rheostat 5 (Fig. 1), which serves to adjust the current in stationary 0 (5 windings of the meter, depending on the amount of Boiibi flowing through the pipeline, consists ns

a hermetically sealed campe 8 (Fig. 2), in which a porcelain tube 9 is placed, resting on a support ring at the 1st point 10 n at one end connected to the nipple 11 in the lid 12 of the chamber; In the same lid, there is still a void shtutser 13. Shtzzer 11 is connected to the zone of positive pressure of the benturi con.ia, and fitting 13 - to the zone of negative pressure. Chamber 8 is filled with mercury to the level a-b. In the absence of a pressure difference inside the sleeve 9 and chamber 8, which has (ecto, if there is no speed in the pipeline, the mercury level in them will be the same. When water flows in the pipeline, a pressure difference occurs in the tube 9 and in chamber 8, as a result of which the level decreases the mercury inside the tube 9 and the increase in level in 1990. Since the pressure change is directly proportional to the squares of the velocity, the fluctuation of the mercury level will also occur in quadratic proportionality. iS of the upper part of the tube 9 has a winding 14 from high-resistance wire, connected to one of the sub-windings of the meter and to the current source, which serves to change the current in direct dependence on the flow rate of the heat-transfer fluid. so that the resistance of the coil varies linearly with the change in the number of years in the pipeline per unit of time, the upper part of chamber 8 is given the shape in which ix rguti forth in ngy layer; the square root of the height of the decrease in the level of mercury in tube 9 would come out of the square root; most satisfied

This condition of the forums of the YABLKETy form of a spherical segment with some lopawavka, carried out by the ycTpoMetBoSJ special corrector 15, is represented by: one piece with the tube 9 and serving at the same time for strengthening the winding 14 of the resistance; passing through the pipeline corresponds to a proportional change in the current in the meter winding. Pins 16 and 17 are used for the advent of a rheostat to the fixed winding circuit of the meter, and pins 18 and 19 are for switching on the release coil circuit 20 (Fig. 1), Contact 19 is connected with the camera body 8, and KOIJTIKT 18 with a metal plate 21 concerning mercury in the absence of a pressure difference

Resistance2 3 consists of primers 22 (Fig. 3), which are integral with the pipeline tee flange 23, two coils of high matching wire wound on porcelain tubes 24 and 2d, expansion chamber 26, cover 27 and two thick-walled glass sleeves 28 and 29. Expansion chamber 26 and glass bottom tube 29 are filled with mercury. Up to level c - d. The capsule 22 is filled with a liquid with a large volumetric expansion and a LOW boiling point (ether, benzene, kerosene, etc., and strengthened by means of a flange 23 inside the pipe joint.

The temperature of the water washing the capsule 22. corresponds to a certain state of the liquid enclosed in the latter, whereby the mercury in the expansion chamber and the lower sleeve either moves to the upper sleeve 28 or fills the expansion cameo in whole or in part. In this connection, a potential difference is measured at the terminals of the coils 24 and 25, which leads to a corresponding change in the voltage at the terminals of the moving system of the counter 4 (Fig. 1).

Rheostat 5 (Fig. 1), operating from the direct pipeline I, acts on the amperage in the main non-locus counter 4, and the rheostat 6, operating from a single pipe 2, acts on the additional stationary winding of the station. In series with the windings of the meter, disconnecting relays 20 are included in the circuit. They act upon stopping the movement of water from the previously described device in the wiring mode.

In each of the pipes, right and reverse, in series with the Venturi nozzle, a resistance of 3 was established. This ensures the change in potential difference at the terminals of the meter counter system, depending on the temperature difference in the pipelines.

Sun Installation Operates from a DC source with software voltage V and is calculated on a maximum current of 5 A.

In an electrodynamic counter, a stationary magnetic field is created by two windings made in the form of four coils: two main and two additional ones. Additional winding is included in the main one. The main winding is powered by a current varying directly proportional to the amount of water flowing per unit time in the direct pipeline, and the additional one is fed by a current directly proportional to

the amount of water flowing in the return pipe.

The magnetic field of the main fixed rollers changes in proportion to the current of the vowel winding, i.e., in proportion to the amount of water flowing through the pipeline.

Similarly, the magnetic field from the additional coils is proportional to the amount of water flowing in the return pipe.

Since the main and secondary windings are connected to each other, the changes in the resulting magnetic field will be proparatively compacted to the amount of water flowing through the photo camera and the difference in the amount of water in the forward and reverse pipelines.

Counter anchor is adventurous to temperature reversing sensors that change times. The potential of the potentials at the terminals of the movable meter system is proportional to the change in temperature difference in the forward and return pipelines.

In this case, the current in the cortex will be

VV

ext. resist sch

since r; const, then j, cv, and since the current in the cortex is proportional to the voltage across its terminals, it is equal to the difference in temperature between the forward and reverse pipelines.

Due to the interaction of the current in the cortex with the resultant magical field, the torque of the counter is pronoured:; it is the amount of warmth consumed in the network.

The counter is equipped with a braking device consisting of an aluminum disk and permanent magnets, creating a braking torque, the effective speed of the disk srashepy.

When the counter is set to the counter operating mode, the counter speed is proportional to the amount of heat transferred through the heat supply lines per unit, and therefore, the amount of theta given through the heat supply lines is proportional to the number of revolutions of the counter meter.

Swinging in a bark with a counting mechanism, it is possible to directly account for the amount of heat given off by the tenlopoitel.

The subject matter of the invention.

Claims (2)

1. A device for measuring the amount of heat given off by the coolant, in which the quantity Ten.ia is measured by an electric meter, in one winding of which is included a sonar, varying with temperature, and into another winding - resistance varying with flowed into a unit of 1-belt heated from a meal, a certain amount is measured by the pressure difference on the sides of the bottom of the venturi tube, characterized in that. that, with the Purpose of accounting for the coolant velocity: reverse t:; the supply line, applied on the EEST:;; to the meter winding, powered by a current proportional to the speed of the coolant in the direct pipeline, additional winding fed by a current, proportional to the coolant velocity to the return pipe. 2. In the device according to claim 1, the use of a disconnect; General relays 20, prednaznachnyh for, switch off the water meter. to the author's testimony of A.P. Nazarov No. 40009 Fis1