DC3700 Bypass desuperheater

DC3700 Bypass desuperheater Introduction

The DC3700 series steam temperature and pressure reduction station is the best solution in the field of steam regulation, integrating high-performance flow control and efficient integrated steam temperature reduction performance. The main application of the DC3740 series is in the bypass system of steam turbines, and its application is not limited by actual pressure, temperature, and flow rate. A large amount of application experience has forged that the valve internals used can effectively reduce wear and meet the continuous operation requirements with minimal maintenance. Dongchen's various cooling water spray structures can be assembled in suitable steam regulation scenarios, providing sufficient cooling water for different steam flow conditions, and have extremely high adjustability. Dongchen has various noise reduction solutions (including specially designed labyrinth disk stacks), which can meet any appropriate noise requirements. For continuous steam cooling applications that require a large amount of cooling water, various types of spray mixing chambers can be installed, and the spray mixing chambers are equipped with protective lining tubes to prevent pipeline damage.

Details

◆Product Features

Valve body: forged and welded valve body. The inlet and outlet of the valve body are connected by welding to form an integrated water spray mixing pipe. The valve body size is calculated based on actual working conditions, and the selected pressure rating is PN16~PN760 (ANSI CLASS150~4500). Valve cover: ≤ PN100 (ANSI CLASS600): bolted flange valve cover>; PN100 (ANSI CLASS600): Pressure self sealing valve cover

Valve components:

Sleeve guided, pilot balanced valve core

The first level of pressure reduction is achieved by a specially designed drilling sleeve

The valve seat is compressed by a sleeve or by a threaded pressure ring

Silencer:

There are three different design schemes:

1-3 level low-noise cage structure

Efficient muffler structure

Specially designed labyrinth disk stack structure

Silencers are usually welded to the valve body, and when a detachable valve seat is used, the muffler can also be designed on the valve seat.


◆Technical Data

Ontological form

DC3700 bypass temperature and pressure reducing valve

Entrance Nominal Diameter

DN80-DN650(3”-26”)

Export Nominal Diameter

DN150-DN1200(6”-48”)

Valve core size

DN50-DN400(2“-16”)

Nominal pressure

PN16-PN760

Fluid temperature

-29℃-620℃

Connection method

Welding type(SW、BW)

Body material

NB/T4700820/15CrMo/12Cr1MoV、A105、A182 F11/F22/F91/F92

Material of valve internals

A182 F6NM/F11/F22/F91/F92/FXM-19、A479XM-19、Inconel718

Rangeability

50:1-30:1

Traffic characteristics

linear


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