Mechanical gas reversing device for multi-stage injection system

Abstract

The invention provides a mechanical gas reversing device for a multi-stage injection system, which comprises a shell and at least two hydrogen injection units inserted into the shell, and a plurality of hydrogen inlets respectively butted with the hydrogen injection units are formed in the side wall of the shell; ejectors distributed corresponding to the hydrogen spraying units are arranged in the shell. The other ends of the different ejectors are communicated with the same buffer area, and meanwhile the shell is provided with a gas outlet for leading out gas in the buffer area. A circulation gas inlet is formed in the side wall of the shell, and the section, extending into the shell, of the circulation gas inlet is communicated with the multiple ejectors through flow guide channels. According to the hydrogen spraying system, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the one-way valves are additionally arranged in the multiple hydrogen spraying units, independent interference-free work of the multiple hydrogen spraying units can be achieved, meanwhile, synchronous work of the multiple hydrogen spraying units can be achieved, the work efficiency of the whole system is improved, and high practicability is achieved.

Description

technical field [0001] The invention relates to the technical field of multi-stage injection systems, in particular to a mechanical gas reversing device for multi-stage injection systems. Background technique [0002] In the two-stage injection system, two parallel sliding sleeves 5.3 and springs 5.4U (hydrogen injection unit) are used to work independently or simultaneously to achieve different hydrogen injection volumes to meet the circulation flow requirements of the entire working range of the system. [0003] In the prior art, such as figure 1 As shown, when one of the hydrogen injection units is turned on for injection and the other hydrogen injection unit is closed for non-injection, the fluid pressure at the outlet of the ejector on one side of the hydrogen injection unit is higher, while the pressure in the other ejector is lower, resulting in partial The gas flows into the low-pressure ejector, and then returns to the ejector on the side of the hydrogen injection ...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, such as figure 1 As shown, when one of the hydrogen injection units is turned on for injection and the other hydrogen injection unit is closed for non-injection, the fluid pressure at the outlet of the ejector on one side of the hydrogen injection unit is higher, while the pressure in the other ejector is lower, resulting in partial The gas flows to the low-pressure ejector, and then returns to the ejector on the side of the hydrogen injection unit, so that the utilization rate of the recycle gas is reduced

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