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Altai Machine-Building Company


Desuperheating station OP-AMK

We strive to the best use of steam power for disintegration of cooling water jets

Advantaged of Desuperheating station OP-AMK:

Increase in number of nozzles allow for more efficient spraying and reduction of section length where evaporation of cooling water occurs. Desuperheating station OP-AMK is equipped with 4 nozzles for cooling water injection. Single-side connection to cooling water pipeline makes assembly even easier. Next, injected water is distributed into 4 nozzles. Water is injected perpendicularly to the axis of steam movement; water cloud is generated in the center of the desuperheating station and actively mixes with steam without touching the pipeline walls. Injection through 4 nozzles allows for load reduction in each nozzle compared to 2 or 1 nozzle design. Injected water flow disintegrates into smaller jets, which improves mixing with steam and evaporation of fluid, as well as prevents from release of water particles outside the desuperheating station.

We minimize flow area of each nozzle and increase number of nozzles depending on calculations. This improves injection and controllability of PSRD in case of load drops or reduction of flow passing through the nozzles. The nozzles are removable for easy maintenance.

Top priorities of development of new valve models:

  • Extension of lifetime of the gate valve elements (spindle, spool, disk, seat) by use of plasma building-up welding of the working surfaces. E.g., wire 20Х13 is conventionally used for building-up welding of the sealing surfaces of the valve disk and seat (manufactured by OJSC Sibenergomash). But we use electrodes ЦН-6Л, and such metal is 3 times erosion-resistant than wire 20Х13

  • Transition from the casted bodies to the welded bodies that are different in enhanced metal structure, absence of pockets and shells, less metal consumption

  • Development of full-flow bodies for stop valves

  • Enhanced spraying of cooling water due to steam power; increased number of injectors; nozzles with load-dependent alternating flow characteristics

  • Enhanced ergonomics

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