Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A large-scale blast furnace blower unit check valve auxiliary opening device and operation method

A technology of blast furnace blast and operation method, which is applied in the direction of valve device, blast furnace, blast furnace details, etc. It can solve problems affecting blast furnace production, check valve cannot be opened normally, blast furnace cannot supply air, etc., and solve complex and frequent technical problems , improve safety and reliability, and ensure stability

Active Publication Date: 2022-03-29
MAANSHAN IRON & STEEL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and operation method for assisting the opening of the check valve of a large-scale blast furnace blower unit, so as to solve the problem that the check valve cannot be opened normally after the large-scale blast furnace blower unit is started, and the blast furnace cannot be supplied with air in time, which affects the production of the blast furnace

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A large-scale blast furnace blower unit check valve auxiliary opening device and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Existing large-scale blast furnace blower units use axial flow compressors. Axial flow compressors have two typical unstable operating conditions, namely, blocking operating conditions and surge operating conditions. Entering an unstable operating condition will make the blower unit Abnormal vibration occurs, and serious equipment damage accidents will occur in serious cases; in order to prevent the above situations from happening, the blower unit is equipped with anti-surge lines and blocking lines, and the working point is in the area of ​​anti-surge lines and blocking lines, which is the stable working condition area; when the air pressure at the outlet of the blower unit is greatly reduced, the specific volume of the exhaust gas will increase with the pressure drop, and the relative velocity of the airflow passing through the blade cascade of the compressor will also increase accordingly. When the speed of the cascade flow to the minimum cross-section reaches the spe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a device and an operation method for assisting the opening of a check valve of a large-scale blast furnace blower unit, and relates to the technical field of blast furnace air supply. To the problem of blast furnace production; the air supply pipeline connecting the blower group and the blast furnace in the present invention is also provided with an air outlet valve between the check valve and the air supply valve, and the air supply pipeline is located between the air outlet valve and the air supply valve There is also a pressure relief pipe connected at the end of the pressure relief pipe. The end of the pressure relief pipe away from the air supply pipe is connected to the exhaust muffler. A pressure relief valve is installed on the pressure relief pipe; The pressure of the air supply pipeline between them is relieved and emptied; then the air outlet valve is opened, and the opening is controlled, and the check valve is automatically opened; finally, the pressure relief valve is closed, and then the air outlet valve is fully opened; the invention effectively solves the problem of blast furnace blower unit After starting, the non-opening of the check valve directly affects the air supply problem of the blast furnace, which ensures the normal production of the blast furnace.

Description

technical field [0001] The invention relates to the technical field of blast furnace air supply, in particular to a device and an operation method for assisting the opening of a check valve of a large-scale blast furnace blower unit. Background technique [0002] There is a saying in the metallurgical industry --- "where there is wind, there is iron", which vividly shows the extremely important role of the blower unit in the blast furnace smelting process. The large-scale blast furnace is an inevitable choice for iron and steel enterprises to comply with the national industrial policy and promote the upgrading of equipment level and economic and technical indicators. The large-scale blast furnace has also increased the demand for air supply flow and pressure of the blast furnace blower unit. [0003] In the production and operation of large-scale blast furnace blower units, a problem that is difficult to solve is often encountered: after the blower unit is started, the check...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F17D3/01F16L55/033F16K15/18F16K17/02C21B7/00
CPCF17D3/01F16L55/033F16K15/18F16K17/02C21B7/00
Inventor 裴永红
Owner MAANSHAN IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com