SU397782A1 - DEVICE FOR MEASUREMENT AND REGULATION - Google Patents

Description

one

The invention relates to devices for measuring and regulating temperature.

A known regulator of temperature control is a direct action, containing a 0OHNOVA thermoballoon with a working fluid, connected by a capillary to an executive mechanism.

The main disadvantage of the known device is the large thermal inertia of thermal coupling: the time constant is more than 30 seconds.

When using special thermobollons with a (branched heat transfer surface, it is possible to reduce the constant time to 8-10 sec.

The purpose of the invention is to improve the flow rate of the working fluid from the thermoplastic B -executive mechanism, which is achieved, then a second additional term, the volume of which is two times less than the volume of the main thermal bulb, and 1 readable 1 bellows element, made in B | B1Ide 1I1Me. common base of expansion and kamiencation bellows, connected (by capillaries to the additional and main thermo-bottle 1M1I, respectively.

FIG. 1 .izobpaiZhvno ycTipoucTBO and temperature for Measurements were regulir01vani comprising OsnoV1noy termoballon / volume with zhi.dkosti 2Ub, dapolNitelny termoyallan 2 Volume Vei liquid tee 3, the actuators (bellows or diaphragm) 4 (inner cavity 5 which is filled with a working fluid, subtracting bellows element. from the bellows 6 of the extension and the bellows 7 of compensation with an internal volume of 8 and 9 respectively (AND the general principle of 10. The subtractive element presses the figure / cover 11 and the spring 12 and is located in the opening 13 with holes dl in ents

The essence of the operation of the device lies in TOiM, that terlubillons / and 2. Together with the subtractive bellows element. M form a differential OARA, which at a certain ratio between volumes (1И Ve) and constants. Time (t and 2-) allows you to decrease settled as a day, from 4.5 to 4 times. When the temperature in a pipe or vessel 14 with velocity flows of hot air is instantaneously increased, the liquid in the balloon 1 / begins to expand exponentially ("Fig. 1 in Fig. 2 and Fig. 3") with a constant 1Вр.е1Mt. fluid equals (+ 2Ve,).

The liquid in the thermal bottle 2 also expands (according to the exponential law with a constant time 2 and tends to the established value of volume V (curve 2 in FIG 2 and Fig. 3.).

The subtractive element subtracts these two exponential acidities and results in a transient process ("rmva 3 in Fig. 2 and Fig. 3).

The subtractor acts as follows.

The liquid supplied by the thermoball-ol / could be transferred to the fundamentals of executive mecha- nism (oillon-permutations) and the output rod, the value 2 / i.

This does not happen (since 01D | NEW | alternately iB thickness of the syphonon 6. Excessive amounts of liquid start to enter the thermal bulb 2, section / dI (Gaffer 6, compensation 7, force compensation increases.

The increase in the volume of the bellows 7 KOMine / iirovatsya excess volume (), causing an overshoot pr at the initial moment (Fig. 2).

For this ratio between ter: mobilono | b / and 2, equal to 1: 2, it is necessary to observe equality of affective and bellows 5 and 7: Рфф РзФв spring 12 is designed to fix the base position of bellows 6 and 7 to overcome the internal pressure force in thermal system (germ | oballo | n /, actuator 4, bellows 7).

The device allows to reduce the time

achieving a steady state for

any type of thermoprinter1KO1V regardless of

their designs and on the inertia of the iB regulator 2-2.5 times.

In case of a sharp decline of the regulator, the regulator will act in accordance with the process described above.

In a number of cases, the reading element can be implemented in one block with the executive mechanism, which simplifies its design.

Pred1met invention

A device for measuring and regulating a temperament containing a main thermal bottle with a working fluid, connected, catOp (M with an actuator, characterized in that, in order to increase the speed of access of the working fluid from the thermal bulb to the executive mechanism, it is equipped with an additional thermal bulb, volume (of which: in d, va times less than the volume of the main thermal bulb, and subtracting bellows elements, which are complete in the form of expansion and (with compensation), connected capillaries s with additional primary and ter | Moballona1MI respectively.

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