RU2290574C2 - Cold and heat producing apparatus in pressure reducing circuit with vortex pipe - Google Patents

Abstract

FIELD: gas industry and refrigeration technology.

SUBSTANCE: apparatus includes moisture separator where gas flow speed is sharply reduced till 0.2 m/s. Moisture separator is combined in steam line with receiver. In order to thaw "snow coat" of heat exchanger, hot gas flow from which moisture is removed is used after moisture separator. Such gas flow is supplied through pipeline with automatic valve that opens and closes by order of timer.

EFFECT: enhanced effectiveness of circuits for controlling gas pressure, lowered energy consumption for producing cold and heat.

2 cl, 1 dwg

Description

The invention relates to the gas industry and refrigeration.

The known scheme of the pressure regulator with a vortex tube used on the gas distribution system [Plotnikov V.M. et al. Gas pressure regulators. Leningrad, "Nedra", p.111, fig. 516].

The disadvantage of this scheme is the loss of excess energy of natural gas.

Also known application RU 20011255829 A dated 06/27/2003, "Method for producing cold and heat in a pressure reduction circuit with a vortex tube and a device for its implementation."

The disadvantage of this method is the lack of “defrosting” of cooling devices.

The technical result of the invention is to increase the efficiency of gas pressure control circuits, reducing energy costs for obtaining cold and heat.

The technical result is achieved by the fact that the device for receiving cold and heat in pressure reduction circuits with a vortex tube contains a separator-moisture separator located on a hot gas stream, in which the direction and velocity of the gas stream changes sharply to 0.2 m / s, combined by a gas pipeline with the receiver.

The technical result is also achieved by the fact that in the device for obtaining cold and heat in pressure reduction circuits with a vortex tube for defrosting the “snow coat” of the heat exchanger, a hot gas stream purified from moisture is used, after the separator-moisture separator coming through a pipeline with an automatic shut-off valve, which opens and closes at the command of a time relay.

A comparative analysis of the proposed technical solution with the prototype shows that the proposed device for producing cold and heat in pressure reduction circuits with a vortex tube is distinguished by a separator-moisture separator, in which the direction and velocity of the gas flow sharply changes to 0.2 m / s, pipeline, defrost " of a snow coat ”of a heat exchanger, with an automatic shut-off valve that opens and closes with the command of a time relay, which allows the hot gas stream to be cleaned of moisture after a separator-moisture separator twist for slow heating of the heat exchanger, which prevents the destruction and depressurization of the latter due to sharp temperature fluctuations from minus 60 ° C to plus 80 ° C.

Signs that distinguish the claimed technical solution from the prototype are not identified in other technical solutions when studying this technical field.

The drawing shows a diagram of a device for generating cold and heat with a separator-moisture separator, a pipeline with an automatic shut-off valve, which opens and closes by the command of a time relay.

The device contains a vortex tube 1, into which a natural gas stream enters through the main pipeline 17, from it after its separation, the hot gas stream through the pipeline 18 is directed to a separator-moisture separator 2, connected by pipelines 19, 22 to the receiver 3, and by a pipe 21 through a solenoid valve 4, controlled by a temperature controller 5 with a heat exchanger 6 of the heat consumer 7. A pipe 20 connects the heat exchanger 6 with a pressure controller 8, and a pipe 23 connects the separator 2 through the solenoid valve 9 also with the controller pressure 8.

The cold gas stream from the vortex tube 1 by a pipe 24 through a solenoid valve 10 controlled by a temperature controller 11 is connected to a heat exchanger 12 of a refrigerating chamber 13, and a pipe 25 through a solenoid valve 14 is connected to a main pipe 26 after a pressure controller 8. A hot gas stream through a pipe 27 through the solenoid valve 15, which opens and closes on the command of the time relay 16, enters the heat exchanger 12.

A device for producing cold and heat in pressure reduction circuits with a vortex tube works as follows.

The gas flow through the main pipeline 17 enters the vortex tube 1, where the gas flow is divided into cold and hot flows. The heated stream through the pipe 18 is sent tangentially to the separator 2, where due to the swirling of the gas stream, a sharp change in its direction of motion and a drop in the flow velocity to 0.2 m / s, the droplet liquid is separated to 0.28 mm in diameter, which merges through the pipeline 19 into the receiver 3. To prevent backwater in the receiver 3, which makes it difficult to drain the liquid freely, the separator 2 and the receiver 3 are combined with a steam equalizing pipe 22. Then the heated gas stream purified from moisture is passed through the pipe 21 through an open saline ny valve 4, 6 to the heat exchanger, warming the surface. The consumer of heat 7 may be a heating system, greenhouses, technological devices, etc. Having given part of the heat in the heat exchanger 6, the hot stream through the pipeline 20 enters the pressure regulator 8, where the gas stream is throttled with decreasing pressure.

When the required temperature in the heat consumer 7 is reached, automatically, by the command of the temperature controller 5, the solenoid valve 4 closes, and the solenoid valve 9 opens and the flow of hot gas through the pipe 23 enters the pressure regulator 8. When the temperature in the heat consumer 7 decreases, automatically by the command of the temperature controller 5, the solenoid valves 4, 9 operate in the reverse order.

The cold stream, leaving the vortex tube 1 through the pipe 24, through the open solenoid valve 10 enters the heat exchanger 12 of the refrigerating chamber 13, where the products are cooled or frozen. The gas flow from the heat exchanger 12 through the pipe 28 enters the main pipe 26. When the specified air temperature in the chamber is reached, the solenoid valve 10 is automatically closed by the command of the temperature controller 11 and at the same time the solenoid valve 14 opens and the gas stream through the pipe 25 enters the main pipe 26. When as the temperature in the chamber rises automatically, at the command of the temperature controller 11, the solenoid valves 10, 14 operate in the reverse order.

Defrosting the “snow coat” from the surface of the heat exchanger 12 is carried out by the command of a time relay 16, closing the solenoid valve 10 and opening the valves 14, 15, which allows the hot gas stream cleaned from moisture to be metered into the heat exchanger 12 and the cold gas stream to enter the main pipeline 26 After completion of the defrosting process of the heat exchanger 12 by the command of the time relay 16, the solenoid valves 14, 15 are closed, and the valve 10 opens and the system operates in cooling mode.

Cleaning in the separator-moisture separator 2 prevents moisture freezing during gas throttling in the pressure regulator Viv of the heat exchanger 12.

This technical solution can significantly increase the efficiency of natural gas pressure control schemes through the use of the resulting cold and heat and can be widely used at gas distribution stations.

The economic effect of the use of the proposed device in pressure reduction circuits with a vortex tube is formed by reducing energy consumption when receiving cold and heat, by utilizing the energy of the gas pressure drop and the cost-effectiveness of natural gas pressure control circuits.

Claims (2)

1. Device for producing cold and heat in pressure reduction circuits with a vortex tube, characterized in that it contains a separator-moisture separator, in which the gas flow rate decreases sharply to 0.2 m / s, combined along the steam line with the receiver. 2. The device for producing cold and heat in pressure reduction circuits with a vortex tube according to claim 1, characterized in that for the defrosting of the “snow coat” of the heat exchanger, a hot gas stream purified from moisture after the separator-moisture separator is used, which comes through a pipeline with an automatic shut-off valve , which opens and closes at the command of a time relay.