Gas odorization unit

Abstract

The invention provides a gas odorization unit comprising a gas pipeline, an odorant storage tank, an electromagnetic diaphragm pump, a flowmeter, a flow totalizer and an odorization controller. The flowmeter is mounted on the gas pipeline and connected with the flow totalizer, the flow totalizer is connected with the odorization controller, and the electromagnetic diaphragm pump is connected with the odorization controller. A feed opening, a return opening, a sewage discharge opening and a discharge opening are arranged in the odorant storage tank, the discharge opening is communicated with an inlet pipe of the electromagnetic diaphragm pump through a needle valve, an outlet pipe of the electromagnetic diaphragm pump is communicated with the gas pipeline through a control valve and an injector valve, and the outlet pipe of the electromagnetic diaphragm pump is communicated with the return opening of the odorant storage tank via a return injection valve. The gas odorization unit has the advantages that odorization amount is regulated automatically according to changes of gas flow, the concentration is uniform, complete gasification is realized, the problem about quantitative, accurate and automatic odorization in gas transmission and distribution is solved, and the gas odorization unit is suitable for long-term operation; besides, the gas odorization unit is simple and compact in structure and convenient to mount and maintain, and an all-closed working method is adopted.

Description

technical field [0001] The invention belongs to the technical field of gas application, and in particular relates to a gas odorizing device. Background technique [0002] Natural gas has been extensively developed and widely used in both industrial production and residential gas supply systems. Due to the physical characteristics of natural gas, which is colorless, odorless or slightly odorous, once a leak is not easy to be found in time, there is a great potential safety hazard. In order to ensure the safe transportation and safe use of gas, more and more people pay attention to gas odorization. my country's "Code for Design of Urban Gas" stipulates that urban gas should have detectable odor, no odor or gas with insufficient odor. Should be smelly. The minimum amount of odorant in the gas should meet the following requirements: when toxic gas leaks into the air and reaches the harmful concentration allowed to the human body, it should be detected; when non-toxic gas leaks ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, tetrahydrothiophene is usually used, and the existing odorizing device still has defects in flow control. It is necessary to further ensure that gas users and maintenance management personnel can detect and deal with leakage accidents in time with their sense of smell, so as to eliminate leakage accidents in time. Budding state, prevent poisoning and explosion accidents

Images