Application of expansion type water pressure and air pressure linkage seal for pressure engineering

Abstract

The invention discloses an application of an expansion type water pressure and air pressure linkage seal for pressure engineering. Expansion sealing is adopted by a common pressure crystallizer and its cooling water pipeline to achieve good sealing of a water path and an air path under the condition that the air pressure in a pressure tank and the pressure of the water pipeline of the crystallizersynchronously rise. The linkage seal comprises the following three parts: 1, a crystallizer (1) provided with a water inlet insertion pipe with a compensator corrugated pipe; 2, a waterway connectingwater jacket corresponding to a fixed position and arranged in a pressure tank (2); and 3, an expansion seal inlaid in a waterway connecting water jacket in the pressure tank (2), wherein an air-water balancing device (3) of the pressure tank (2) enables the air pressure in the expansion seal to be in linkage with the water pressure of the water path in the crystallizer (1) in order to realize differential pressure balance. The application has the following advantages: (1) a water inlet insertion pipe is inserted into the expansion seal in the corresponding water jacket of the pressure tank,so that the occupied space is minimum; and (2) the pressure detection and water-air balance device are arranged, so the inflation pressure of the expansion seal is easy to control, the balance controlof water pressure and air pressure is achieved, and the sealing mode is superior to other sealing modes.

Description

technical field [0001] The invention belongs to the field of water-cooled seals in plug-in pressure vessels, and in particular relates to the application of expansion-type water-pressure-pneumatic linkage seals for pressure engineering. Background technique [0002] At present, the pressure electroslag furnace, which is less used metallurgical equipment in the world, is still in the process of continuous exploration. There are two main ways to realize the pressure of the pressure electroslag furnace: the tank type and the crystallizer type. What we are studying is the tank type. . The tank type is divided into two parts, the upper cover and the tank body. The structure of the upper cover is roughly the same for the tank type and the crystallizer type, so the research focuses on the pressure implementation details of the lower half of the tank body. Tank-type pressure electroslag furnace, the crystallizer used for smelting needs to be inserted into the tank body, and the gas...

AI Technical Summary

Problems solved by technology

⑴The sealing problem of the nozzle of the crystallizer: what kind of sealing can not take up space and is easy to cooperate with pressure control? The crystallizer inserted into the tank needs to be connected by water. After the connection, it can withstand the pressure of up to 16 atmospheres in the tank. Since the space between the inside of the tank and the crystallizer cannot be designed to be large, the traditional mechanical locking method is cumbersome and inconvenient to operate. Can not ensure the locking effect

⑵Water pressure and air pressure increase simultaneously: How to use ordinary steelmaking crystallizers to withstand high pressure, the tank type needs to be designed. When the tank is filled with nitrogen to reach high pressure, the crystallizer waterway also needs high pressure to keep high pressure gas and high pressure water relative The pressure difference balance device requires the realization of the waterway seal in the pressure tank to be linked with the gas pressure in the tank. Ordinary mechanical seals cannot achieve the above two points.

Images