SU1699564A1 - Method of stabilization of flow rate of liquid or gas - Google Patents

Description

one

(21) 4114032/26, 4114030/26

(22) 11.09.86

(46) 12/23/91. Bul Number 47

(71) Odessa Polytechnic Institute

(72) B.V. Fisenko, Yu.P. Skakunov, V.G. Lunev and V.E. Fuchs

(53) 62-752 (088.8)

(56) USSR inventor's certificate No. 1039539, cl. B 01 F 3/04, 1981.

USSR Author's Certificate No. 1066630, cl. B 01 F 3/00, 1982.

USSR Author's Certificate No. 879565, cl. G 05 D 7/01, 1981.

(54) METHOD FOR STABILIZING LIQUID OR GAS FLOW

(57) The invention relates to methods.

stabilization of costs; and Provides increased process efficiency by eliminating pressure fluctuations in the outlet pipeline. The method of stabilizing the flow of a liquid or gas involves transporting the medium through a restriction device, at the exit of which a two-phase gas-liquid stream is obtained. The stream is transported at a speed exceeding the speed of sound propagation in it. A transonic shock wave is created in the stream. In this case, a two-phase flow is obtained by injecting a liquid or a gas or by lowering the pressure in the liquid. 2 hp f-ly, 2 ill.

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The invention relates to the food, chemical, pharmaceutical, microbiological and other sectors of the industry and can be used to stabilize the flow of liquid and gas in a stream.

The purpose of the invention is to increase the efficiency of the process by eliminating the effect of pressure fluctuations in the outlet pipe.

FIG. 1 shows a device that implements the proposed method; in fig. 2 - a device for stabilizing fluid flow.

Example 1. Through the nozzle 1 through the pipeline 2 through the regulating valve 3 as the working fluid serves steam under a pressure of 1.5 kgf / cm2. Bone fat, vitamins A are injected into receiving chamber 4 through regulating armature 5 via pipeline 6.

and Dz on a fatty basis, phosphatide concentrate with a ratio of 20: 0.006:: 3.7, respectively, at 55-60 ° C in a mixture with milk milk, having a temperature of 25 ° C. In the confuser 7, a two-phase gas-liquid flow is formed at a speed of 25–30 m / s (sound speed in the indicated flow 15–20 m / s) and at the exit from the mixing chamber 8 and at the entrance to the diffuser 9 a shock wave occurs. . As a result of the avalanche-like collapse of vapor bubbles in the shock, there is a sharp increase in pressure. The jump translates the supersonic flow in a subsonic one and at the same time in the zone of pressure increase, a transition takes place from the two-phase gas-liquid flow structure to the single-phase liquid structure. In the case of oscillations, the pressure is

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neither in the outlet pipe 10 in the range of up to 3 kgf / cm2 the flow rate of the liquid components does not change.

Example 2. Mineral water at a temperature of 8-10 ° C under a pressure of 3 kgf / cm2 is fed through the nozzle 1 (Fig. 1) Carbon dioxide is fed through pipeline 6 into the receiving chamber. In the confuser 7, a two-phase gas-fluid JQ flow is formed at a speed of 30–35 m / s (sound speed is 20–25 m / s) and at the indicated method parameters a pressure surge occurs in the mixing chamber. In the case of pressure fluctuations in jj outlet piping 10 in the range of up to 2 kgf / cm2, the flow rate of the dosed liquid remains constant, which ensures a constant concentration of gas in mineral water.

Example 3. Water under pressure of 3-5 kgf / cm2 at a temperature of 20-60 ° C is fed through conduit 2 (Fig. 2) through a nozzle 1, which is a constriction device. The velocity of the liquid is 25–40 m / s in the constriction device, which ensures its relative overheating and boiling up. A two-phase mixture is formed behind the restricting device in the mixing chamber 8, having a sound velocity of 10-30 m / s. The flow is supersonic and a pressure surge occurs in the diffuser 9. When the pressure fluctuates in the outlet pipe 10 to 3 kgf / cm2, the flow rate of the liquid to be dosed remains constant.

1699564 - d

Example 4. The implementation of the method in the variant of mixing liquid with steam is applicable when it is necessary to provide strictly standardized heating of the pumped liquid with full vapor phase condensation. The option of mixing a liquid with a gas is applicable when it is necessary to dissolve the gas in the liquid stream, while maintaining the ratio of the liquid and gas phases.

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Claims (3)

1. A method of stabilizing the flow of a liquid or gas by transporting the medium through a restricting device, characterized in that In order to increase the efficiency of the process by eliminating the effect of pressure fluctuations in the outlet pipe, a two-phase gas-liquid flow is obtained at the exit of the restriction device, transported it at a speed exceeding the speed of sound in it, and create a transonic shock wave. 2. The method according to claim 1, distinguishes between a -... n and in that a two-phase flow is obtained by injecting a liquid or gas. 3. A method according to claim 1, characterized in that the two-phase flow is obtained by decreasing the pressure in the liquid. Invention Formula 1. A method of stabilizing the flow of a liquid or gas by transporting the medium through a restricting device, characterized in that In order to increase the efficiency of the process by eliminating the effect of pressure fluctuations in the outlet pipe, a two-phase gas-liquid flow is obtained at the exit of the restriction device, transported it at a speed exceeding the speed of sound in it, and create a transonic shock wave. 2. The method according to claim 1, distinguishes between a -... n and in that a two-phase flow is obtained by injecting a liquid or gas. 3. A method according to claim 1, characterized in that the two-phase flow is obtained by decreasing the pressure in the liquid.  / "7956691 |  t. X shzh eight cpuaZ