Top assembly of vertical low-temperature gas tank

Abstract

The invention relates to a top assembly of a vertical low-temperature gas tank. A top support filling structure is arranged between a shell upper head and a liner upper head; a separating cover is arranged on the inner side of the liner upper head; the top support filling structure is penetrated through the shell upper head and the liner upper head and is inserted into the separating cover; a first chamber penetrating through the whole top support filling structure is formed between the top support filling structure and the separating cover; a second chamber is formed between the shell upper head and the liner upper head; a vacuumizing channel used for connecting the first chamber with the second chamber is arranged on the top support filling structure; the vacuumizing channel and a vacuumizing pipe arranged on the shell upper head are both connected with the second chamber; a liquid inlet and a liquid outlet are formed on the top support filling structure; a liquid feeding port and aliquid draining port are formed on the liner upper head; the liquid inlet and the liquid outlet are respectively connected with the liquid feeding port and the liquid draining port through pipelines,so as to form a liquid feeding channel and a liquid draining channel; reliable connection between the shell upper head and the liner upper head is realized while heat insulation is realized.

Description

technical field [0001] The invention relates to a gas tank for storing low-temperature gas, in particular to a top assembly of a vertical low-temperature gas tank. Background technique [0002] Natural gas is a clean and environmentally friendly high-quality energy, non-toxic, almost free of sulfur, dust and other harmful substances, so the use of natural gas can fundamentally improve the quality of the environment, and because it is easy to emit, its specific gravity is lighter than air, and it is not easy to accumulate into Explosive gas, relatively safe. Therefore, natural gas has a tendency to replace gasoline, diesel and other fuels in the future. [0003] Vigorously promoted by the state, natural gas will become the most important fuel in the future, and the power source design of various large-scale equipment will also adopt more natural gas energy supply methods. In order to ensure the performance of the equipment during the design of the gas equipment, there are v...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of unreliable connection and poor heat insulation between the upper head of the inner tank and the upper head of the shell existing in the top assembly of the existing vertical low-temperature gas tank, the present invention provides a top assembly of the vertical low-temperature gas tank. As a result, the connection between the upper head of the inner tank and the upper head of the shell of the vertical low-temperature gas tank is reliable, and the heat insulation is good

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