Bilateral efficient vortex tube heater

Abstract

The invention discloses a bilateral efficient vortex tube heater. The bilateral efficient vortex tube heater comprises a metal outer barrel, a vortex tube is arranged in the metal outer barrel, a vortex chamber is connected to one end of the vortex tube, the other end of the vortex tube is open and is provided with an adjusting valve, a heat exchanger is arranged outside the vortex tube, an outerheating layer is arranged between the heat exchanger and the metal outer barrel, and a vortex chamber local heating area is arranged between the vortex chamber and the metal outer barrel; and a guiding gas inlet, a guiding gas outlet, a low-pressure natural gas outlet and a high-pressure natural gas inlet are formed in the side wall of the metal outer barrel, and a decompressed nozzle is formed inthe part corresponding to the high-pressure natural gas inlet. The guiding gas heating efficiency is improved, meanwhile, the guiding gas temperature can be adjusted, functions of self-ice blockage prevention under the general working condition and self-ice blockage relieving under the extreme working condition are achieved, long-term and stable operation can be achieved, and the normal work of natural gas pressure-adjusting equipment is ensured.

Description

technical field [0001] The invention relates to a natural gas transportation device, in particular to a double-sided high-efficiency vortex tube heater. Background technique [0002] During the adiabatic expansion process of natural gas, due to the Joule-Thomson effect, a large temperature drop usually occurs. Due to the small diameter of the pressure induction pipe (also known as "pilot gas pipe") of the natural gas pressure regulating equipment, when the temperature of the natural gas is lower than the water dew point, it is very likely that hydrate will form in the pressure induction pipe and an "ice blockage" accident will occur , And then cause the failure of the function of the natural gas pressure regulating equipment. Therefore, before the pilot gas enters the pressure regulating equipment, it needs to be heated to ensure the normal operation of the pressure regulating equipment. [0003] There are two commonly used methods to increase the pilot gas temperature. On...

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Problems solved by technology

At present, the VPGH-SP and VPGH-DP products produced by UVI Company in the United States are widely used. The heat exchanger only heats the pilot gas from the inside to the outside on one side. It has no adjustment device itself, which is not convenient for working conditions. Adjust heat transfer efficiency when changing

At the same time, the vortex tube heater itself has the risk of ice blockage due to the existence of the decompression nozzle. Although VPGH-SP and VPGH-DP both draw hot air to prevent ice blockage of the decompression nozzle, when the front and rear pressure ratio of the regulator is small And when the temperature of natural gas is low, the temperature of the hot gas itself is not high, so there is still the possibility of ice blockage in the vortex tube heater. Since there is no adjustment device, it is difficult to remove the blockage

More generally, vortex tube heaters use one-sided heat exchange between hot gas and pilot gas, and the heat exchange efficiency is not high. When the temperature, pressure and ambient temperature of natural gas drop, sufficient heat exchange efficiency cannot be guaranteed, resulting in the heating of the pilot gas. The effect is not good, affecting the normal operation of natural gas pressure regulating equipment

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