DME storage and filling system for town gas

Abstract

The invention discloses a dimethyl ether storage and filling system for town gas and relates to the technical class of dimethyl ether storage and filling. A high pressure pump, a main blow-off pipe, a compressor and the like are arranged in a matching manner, corresponding operation is performed, after water is injected into a number one storage tank or a number two storage tank, water leaks from a root stop valve one, a root ball valve one or a root stop valve two and a root ball valve two, the tank changing function can be realized, time is earned for emergency treatment, and explosion gas can be prevented from forming in the number one storage tank or the number two storage tank. At the same time, an odor liquid produced by an odorizing device is dropped in a liquid phase inlet pipe by an odorizing pipe, accordingly, the liquid dimethyl ether is odorized and flavored, and it can be perceived easily when dimethyl ether leaks. Besides, a manual reflux valve on a decompression valve can be opened, the liquid dimethyl ether in a filling pipe can flow to a return pipe by the decompression pipe, the pressure of the filling pipe can be reduced by the design of backflow and decompression of so many pipelines, and the accident can be prevented by the manual reflux valve when an automatic safety valve is damaged.

Description

technical field [0001] The invention relates to dimethyl ether storage and filling technologies, in particular to the field of a dimethyl ether storage and filling system for town gas. Background technique [0002] At present, the most widely supplied urban gas in my country is liquefied petroleum gas. Its liquefied petroleum gas is convenient for liquefied storage and has simple facilities. However, with the rise of international crude oil prices, the price of liquefied petroleum gas is also rising. Many users in villages and towns abandoned them one after another because they could not afford it economically, and instead burned firewood, which would result in a decrease in forest area and be detrimental to ecological balance. Therefore, it is imminent to develop new gas sources for town gas. [0003] Dimethyl ether for town gas refers to dimethyl ether (DME) that is used as fuel gas in cities and towns, and whose gas quality complies with the current national standard "D...

AI Technical Summary

Problems solved by technology

[0007] (1) the dimethyl ether used for town gas produced by the prior art is odorless, and it is difficult to detect when leakage occurs, and it is easy to cause accidents no matter whether it is produced or used as town gas;

[0008] (2) What is stored in the dimethyl ether storage tank is liquid dimethyl ether, and the head space in the dimethyl ether storage tank is gaseous dimethyl ether. When the liquid phase valve at the bottom of the dimethyl ether storage tank is damaged, liquid dimethyl ether is caused. If ether leaks, the liquid dimethyl ether in the dimethyl ether storage tank will quickly gasify, and the volume will expand by 250-300 times to form an explosive gas, which is very dangerous at this time, and the existing technology cannot transfer the leakage. the gas in the ether storage tank;

[0009] (3) The filling device in the prior art does not have a perfect multi-pipe return flow design, which may easily cause excessive pressure in the filling pipe and affect the filling work

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