SU1229505A1 - Damper - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in petrochemistry, energy, heat supply and sewage.

The purpose of the invention is to increase the efficiency of the device.

FIG. 1 shows a damper, a general view; in fig. 2 - isotherms of real gas (dependence of pressure P on specific volume V at constant temperature T), which are vapors of working fluid.

The damper includes a housing 1 with thermal insulation 2 and flanges 3 for embedding into the line (not shown) the supply of working fluid, as well as a heater 4. The housing 1 is covered by the skin 5} ohm 5 with thermal insulation 6. Between the inner surface of the casing 5 and the outer surface of the housing 1 a cavity 7 is formed, which communicates with the internal cavity of the housing 1 through the holes 8 formed in the latter along the entire length of the cavity 7. The heater 4 is installed in the cavity 7.

A wet saturated steam region is formed near the heater, containing boiling liquid and dry saturated vapor bubbles 9.

The damper works as follows.

At steady state, the cavity 7 through the holes 8 is filled with working fluid. On the surface of the heater 4 organized bubble re 1229505

boiling bench. Bubbles 9 of dry saturated steam (Fig. 2, point C) are formed at heater 4 and condense as they move away from the latter, down to 5 pads, in the cold layers of the working fluid. When a pulsation of pressure of the working fluid occurs, the vapor bubbles 9 are compressed according to the isotherm T (Fig. 2, from point C to B)

fO rshi their extension (figure 2, from point B to point C). At the same time, the pressure in the bubbles 9 is kept approximately constant, which ensures a decrease in the amplitude and frequency of pulsations of pressure in the working fluid, as well as the dissipation of the energy of the pulsation of the pressure to the phase transitions: vapor – liquid and vice versa.

20

The placement of the heater 4 in the heat, loisol) cavity 7 ensures the minimum energy consumption, since there is no continuous entrainment of vapor bubbles 9 steam

25 of the working fluid, and the dissipation of heat from cavity 7 through thermal insulation 2 and 6 is difficult.

In addition, the implementation of the holes 8 in the housing 1 along the entire length of the cavity 7 ensures the maintenance of the bubble boiling regime around the heater 4 and eliminates the formation of a superheated steam region in the cavity 7, which reduces the efficiency of the device (Fig. 25 curve T ,,).

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The placement of the heater 4 in the heat, loisol) cavity 7 ensures the minimum energy consumption, since there is no continuous entrainment of vapor bubbles 9 steam

the working fluid, and the dissipation of heat from the cavity 7 through the heat insulation 2 and 6 is difficult.

In addition, the holes 8 in the housing 1 along the entire length of the cavity 7 maintains the bubble boiling regime around the heater 4 and eliminates the formation of a superheated steam region in the cavity 7, which reduces the efficiency of the device (Fig. 25 curve T ,,).

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VNIIPI Order 2438/36 Circulation 880

Subscription

Random polygons pr-tie, Uzhgorod, st. Project, 4

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Subscription

Ekna, 4

Claims (1)

DAMPER, comprising a heat-insulated casing with connecting flanges and a heater, so that, in order to increase economy, it is additionally equipped with a heat-insulated casing covering the casing with the formation of a cavity between the outer surface of the casing and the inner surface casing, the housing is perforated along the entire length of the cavity, and the heater is installed in the latter. Figure 1 SU „1229505