Steam turbine for waste heat recovery of steam boiler

Abstract

The invention relates to the technical field of steam turbines, and discloses a steam turbine for waste heat recovery of a steam boiler. The steam turbine comprises a bottom plate, wherein a steam turbine body is fixedly mounted on the top surface of the bottom plate; the top surface of the bottom plate is fixedly connected with a mounting seat positioned on the bottom surface of the front end of the steam turbine body; the bottom surface of the steam turbine body fixedly communicates with an exhaust box; a fixing rod is fixedly connected to the top surface of the steam turbine body; and a lantern ring is fixedly connected to the top surface of the fixing rod. According to the steam turbine for waste heat recovery of the steam boiler, the lantern ring is additionally arranged on the outer side surface of the exhaust box, and a communicating pipe fixedly communicates with the inner side surface of the lantern ring, so that the communicating pipe penetrates through the exhaust box and communicates with a vertical pipe in the exhaust box; and cooling water is input to the outer side of the lantern ring, the cooling water can absorb exhaust heat from the interior of the exhaust box, and heat in the exhaust box is prevented from being lost to the outside through the side surface of the exhaust box, so that the exhaust heat absorption efficiency is improved, and the use effect is good.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a steam turbine for waste heat recovery of steam boilers. Background technique [0002] The steam turbine, also called the steam turbine engine, is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle and becomes an accelerated air flow, and then sprays onto the blades, so that the rotor equipped with blade rows rotates and works externally. The steam turbine is a modern The main equipment of thermal power plants is also used in metallurgical industry, chemical industry, and ship power plant. [0003] In the existing steam turbine for waste heat recovery of steam boilers, during use, high-temperature steam needs to be passed into the inlet of the steam turbine to realize energy conversion. The cooling of the exhaust is realized by passing in cold water. However, the existing cooling method is usually connected to the ou...

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Problems solved by technology

[0006] The present invention provides a steam turbine for waste heat recovery of a steam boiler, which has the advantages of improving the waste heat absorption effect inside the exhaust box, improving the stability of the internal structure of the exhaust box, and improving the waste heat utilization effect of the cooling pipe, and solves the problems mentioned in the above background technology

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