Two-stage backpressure machine reheating steam extraction heating supply system and method

A technology for steam extraction and heat supply and back pressure machine, which is applied in separation methods, chemical instruments and methods, preheating, etc., can solve the problems of increasing steam introduction and extraction devices, difficulty in design, and high pressure on environmental protection, so as to reduce energy The effect of consumption, saving layout space and avoiding waste of heat energy

Inactive Publication Date: 2019-04-19
DONGFANG TURBINE CO LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The direct heat supply of small boilers is reliable and stable, but the combustion efficiency of small boilers is low, the economy is poor, the emission is difficult to meet the standards, the pressure on environmental protection is huge, and it is facing elimination, and it cannot provide electricity and has a single function
[0005] 2) The heat supply of the back pressure steam turbine is reliable and stable, but the steam mainly comes from a small boiler, which also has low combustion efficiency, and the emission is difficult to meet the environmental protection pressure. The flow efficiency of the steam turbine is also low, and the economy is ver

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
  • Two-stage backpressure machine reheating steam extraction heating supply system and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1:

[0031] Such as figure 1 As shown, in this embodiment, a two-stage back pressure machine reheat extraction steam heating system includes a deaerator inlet pipe 5, a deaerator 4, a boiler inlet pipe 6, and a boiler outlet that are connected in sequence according to the water flow direction. Water pipe 7, high pressure back pressure machine 1 and high pressure steam supply pipe 9, said boiler water inlet pipe 6 is provided with a boiler 3, said high pressure steam supply pipe 9 is connected with a low pressure steam inlet pipe 11, and said low pressure inlet pipe The steam pipe 11 communicates with a low-pressure back compressor 2, and the low-pressure back compressor 2 communicates with a low-pressure steam supply pipe 12.

[0032] The water enters the deaerator 4 from the deaerator inlet pipe 5 for deoxygenation, and then enters the boiler 3 through the boiler inlet pipe 6 and the boiler 3 heats the water in the boiler inlet pipe 6 to form high temperature and h...

Example Embodiment

[0035] Example 2:

[0036] The steam outlet of the high-pressure back pressure machine 1 is connected with a high-pressure exhaust pipe 8 connected to the boiler reheater of the boiler 3, and a reheating steam outlet pipe is connected between the high-pressure exhaust pipe 8 and the high-pressure steam supply pipe 9 10. When the steam entering the high-pressure back pressure machine 1 for work is discharged from the high-pressure back pressure machine 1, when the steam temperature does not meet the demand for high-pressure steam, adjust the parameters of the boiler 3 so that the high-pressure steam enters the boiler 3 through the high-pressure exhaust pipe 8. The steam is heated by the boiler reheater of the boiler 3 to increase the parameters of the steam again until the demand for high-pressure steam is met.

[0037] When only high-pressure steam demand is needed, the high-pressure steam demand is 4MPa, and the back pressure of the back pressure machine is maintained by the heat...

Example Embodiment

[0039] Example 3:

[0040] On the basis of the above embodiment, in this embodiment, the high-pressure exhaust pipe 8 is connected with a first-stage regenerative steam extraction pipe 13, and the boiler water inlet pipe 6 is provided with a first-stage regenerative steam extraction pipe 13 Connected one-stage high pressure heater 14.

[0041] Part of the high-pressure steam can be split from the high-pressure exhaust pipe 8 through the first-stage regenerative steam extraction pipe 13 and enter the first-stage high-pressure heater 14. The first-stage high-pressure heater 14 is used to make the high-pressure steam and the boiler The water in the water inlet pipe 6 exchanges heat, thereby increasing the temperature of the water passing through the primary high-pressure heater 14, thereby improving the efficiency of the boiler 3 in heating and increasing the pressure of the feed water in the boiler 3.

[0042] A control switch is provided on the first-stage regenerative steam extracti...

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 two-stage backpressure machine reheating steam extraction heating supply system and method. The two-stage backpressure machine reheating steam extraction heating supply system comprises a deaerator water inlet pipe, a deaerator, a boiler water inlet pipe, a boiler water outlet pipe, a high-pressure backpressure machine and a high-pressure steam supply pipe. A boiler is arranged on the boiler water inlet pipe. The high-pressure steam supply pipe communicates with a low-pressure steam inlet pipe. The low-pressure steam inlet pipe communicates with a low-pressure backpressure machine. The low-pressure backpressure machine communicates with a low-pressure steam supply pipe. The two-stage backpressure machine reheating steam extraction heating supply system has the beneficial effects that the requirement of users for high-parameter steam is met through unit reheating; the power capability of reheated steam is greatly improved; waste steam generated from acting by the low-pressure backpressure machine is supplied to low-pressure heat users; the requirements of the users for high-pressure steam supply and low-pressure steam supply are both met; and the utilization efficiency of heat energy is improved.

Description

technical field [0001] The invention relates to the technical field of back pressure machines, in particular to a two-stage back pressure machine reheat extraction steam heating system and method. Background technique [0002] The "General Office of the State Council on Printing and Distributing the Energy Development Strategic Action Plan" (2014-2020) (Guo Ban [2014] No. 31) requires: fully implement the energy strategic policy of "conservation, cleanness and safety", implement stricter energy efficiency and environmental protection standards, and accelerate The upgrading and transformation of coal-fired power generation will create an upgraded version of the coal power industry with high efficiency, cleanliness and sustainable development, laying a solid foundation for national energy development and strategic security. According to the relevant national industrial policies and in accordance with the principle of "determining electricity by heat", for areas with sufficient...

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
IPC IPC(8): F01K7/22F01K7/38F01K7/44F01K11/02F22D1/32F22D1/50
CPCF01K7/22F01K7/38F01K7/44F01K11/02F22D1/32F22D1/50
Inventor 宋萍史宣平欧阳杰钟刚云罗方马洪林宋放放刘晓燕张小波谢林贵李泽培李音邓凌宇江南
Owner DONGFANG TURBINE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap