A new type of steam turbine seal and its assembling method

Abstract

The invention discloses a novel steam turbine seal and its assembly method, and relates to the technical field of steam seal devices for steam turbines, in order to solve the problem that the current seals on the market are not good enough to seal gas during use, causing a small part of air to pass through the seal Outflow, thus affecting the power generation efficiency of the steam turbine. An oil seal tooth mechanism is arranged above the support block, a connection block is arranged at the middle position below the support block, a steam seal back plate is arranged below the connection block, and one end of the oil seal tooth mechanism in the axial direction is arranged There is a first side tooth, and the other axial end of the oil seal gear mechanism is provided with a second side tooth, and a number of choke teeth are sequentially arranged between the first side tooth and the second side tooth, adjacent to the wind choke teeth Trapezoidal grooves are arranged between them, the inner side of the wind blocking teeth is provided with the first inner wind blocking teeth, the second inner wind blocking teeth and the third inner wind blocking teeth, and the outer side of the wind blocking teeth is provided with the third outer blocking teeth wind teeth, second outer windshield teeth and first outer windshield teeth.

Description

technical field [0001] The invention relates to the technical field of steam seal devices for steam turbines, in particular to a novel steam turbine steam seal and an assembling method thereof. Background technique [0002] The steam seal is installed between the dynamic and static parts of the turbine to reduce or prevent the leakage of steam and the leakage of air from the vacuum side. In order to reduce the air leakage in the above-mentioned gaps and ensure the normal and safe operation of the steam turbine, various steam seals are specially provided. The structure of the steam seal can be generally divided into three types: labyrinth steam seal, carbon steam seal and water seal. [0003] At present, the steam seal on the market is not good enough to seal the gas when it is used, which causes a small part of the air to flow out through the steam seal, thereby affecting the power generation efficiency of the steam turbine. Therefore, a new type of steam turbine steam seal...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of steam turbine seal to solve the problem in the above-mentioned background technology that the current seals on the market are not good enough to seal gas during use, resulting in a small amount of air flowing out through the seal.

Images