hanghui
搜索
Search

hanghui

Hangzhou valve focuses on scientific and technological innovation and cooperation in production, learning and research. Currently, it has more than 70 national patents, including temperature reduction and pressure reducing devices, safety valves, among which, 8 patents are invention.

PREHEATER VALVE

Retail price
0.0
Market price
0.0
Number of views:
1000
Product serial number
Category
Products
Quantity
-
+
Stock:
0
Currently out of stock
1
产品描述
Parameters

BRIEF
Preheater bypass valves (inlet valve and outlet valve), used as preheater bypass to ensure continuous operation of the power plant when a preheater fails.
Technically, the bypass valves are installed on the inlet and outlet of feed-water pipeline of preheater, once the preheater fails and waterlevel rises to alarm stage, the both inlet valve and outlet valve will move into operation instantly and switching the water to the bypass line so as to protect the preheater from damage of accident.
Preheater Valve Application
To improve the efficiency of a steam boiler system, feed-water, flowing from the feed-water tank to the vessel, is heated by a preheater. The preheater is a heat exchanger with tubes containing high pressure feed-water. From the outside, the tubes receive steam drawn-off from the turbine.
In case of a leakage in the tubing system, water of higher pressure rushes into the vapor room of lower pressure. To avoid damages through
- penetration of feed-water into the turbine
- build-up of inadmissible pressure in the preheater jacket, the preheater must be separated from the feedwater pressure tube as soon as possible. This will be provided by the preheater protection unit, i. e. by quick closing valves which are controlled by their own medium and located at the in-and outlet of the preheater. Normally a quick closing 3-way inlet valve is located at the inlet and a quick closing check valve at the outlet.

Hangzhou Worldwides Valve Co.,Ltd
 

 

Scan the QR code to read on your phone
We could not find any corresponding parameters, please add them to the properties table
Next

Related products

 

hanghui

Add:The Future Science and Technology City of Hangzhou, China.
Tel:0086-571-88681489
Email:hzhhfm@foxmail.com
Fax:0571-88681498

hanghui

底部版权

Time of issue:2020-04-24 00:00:00
Copyright © Zhejiang HANGHUI Valve Co., Ltd 浙ICP备2023022918号-1   |   Powered by www.300.cn   |