Periodic blowdown expansion container with self-water sealing function, drainage system and method

A technology of regular sewage discharge and container expansion, which is applied in the field of power plants, can solve the problems affecting the reliability and user experience of heat exchangers, the formation of dirt on the surface of heat exchangers, and the impact on the stability of unit operation, so as to save equipment, prevent backflow, and reduce The effect of flushing destructive power

Active Publication Date: 2019-10-01
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the working medium in the expansion vessel is mainly from the blowdown of the boiler steam drum, the salt content is high, and with the heat exchange process, the water temperature decreases, and the solubility of the salt in the sewage decreases greatly, so it is easy to be deposited on the surface of the heat exchanger. Formation of fouling, resulting in frequent maintenance of heat exchangers
When the heat exchanger is located inside the fixed-row expansion vessel, it is even necessary to stop the fixed-row expansion vessel to overhaul the heat exchanger. When the fixed-row expansion vessel is disabled, it needs to be shut down, which greatly affects the stable operation of the unit; even when When the heat exchanger is located outside the fixed row expansion vessel, due to the inherent cause of the salt content of the working medium itself, the heat exchanger is seriously fouled, and frequent maintenance is required, which seriously affects the efficiency of the heat exchanger user (such as heating into the furnace cold air in CN202303326U). Reliability and user experience, its overhaul and maintenance costs are even higher than the energy it recovers

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
  • Periodic blowdown expansion container with self-water sealing function, drainage system and method
  • Periodic blowdown expansion container with self-water sealing function, drainage system and method
  • Periodic blowdown expansion container with self-water sealing function, drainage system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The invention discloses a regular blowdown expansion container with self-water sealing function, such as figure 1 and figure 2 As shown, it includes: the body of the regular sewage expansion container, two sewage outlets are arranged at the bottom of the regular sewage expansion container body, and a diversion pipe connected to one of the sewage outlets is arranged inside the regular sewage expansion container body. The minimum maintenance water level of the blowdown expansion vessel;

[0051] Diversion holes are set on the wall of the diversion pipe above the minimum maintenance water level of the regular sewage expansion vessel, and the position of the diversion hole can ensure that the water stored in the regular sewage expansion vessel is always kept at the lowest water level.

[0052] The opening at the top of the guide tube is facing upwards, and the top of the guide tube is sealed, such as image 3 As shown, a number of diversion holes are opened on the side w...

Embodiment 2

[0065] In this embodiment, the opening of the guide pipe section faces downwards through the form of an elbow, such as Figure 4 As shown, there is no need to open diversion holes on the standpipe at this time, and vent holes are opened on the top of the elbow. Water can enter the diversion pipe through the inverted elbow. At this time, the lowest liquid level is at the elbow, and it can also avoid entering The fixed row of water flows directly into the diversion pipe section.

[0066] The rest of the structure is the same as that of the first embodiment, and will not be repeated here.

Embodiment 3

[0068] In this embodiment, the diversion pipe section is connected to the upper part of the expander to play a role of reinforcement, such as Figure 5 As shown, at this time, the diversion hole is only opened above the minimum maintenance water level, and the area that can be used to open the diversion hole also increases.

[0069] The rest of the structure is the same as that of the first embodiment, and will not be repeated here.

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 an intermittent blowdown flash tank with a self water sealing function and a drainage system and method. The intermittent blowdown flash tank with the self water sealing function comprises an intermittent blowdown flash tank body, at least two drainage outlets are formed in the bottom of the intermittent blowdown flash tank body, a flow guiding pipe communicating with one drainage outlet is arranged in the intermittent blowdown flash tank body, and the height of the flow guiding pipe is higher than the lowest maintaining water level of the intermittent blowdown flash tank. A flow guiding hole is formed in the part, above the lowest maintaining water level of the intermittent blowdown flash tank, of the pipe wall of the flow guiding pipe, and the formed position of the flow guiding hole can ensure that the water stored in the intermittent blowdown flash tank can be always maintained at a lowest water level. The intermittent blowdown flash tank has the beneficialeffects that the system is greatly simplified and optimized, backflow of a corrosive medium in a drainage tank is prevented, and thus the safety of a machine unit is improved. The intermittent blowdown flash tank with the self water sealing function and the drainage system are particularly suitable for design of drainage systems for starting intermittent blowdown flash tanks of boilers, small machine units and gas turbine waste heat boilers.

Description

technical field [0001] The invention relates to the related technical field of power plants, in particular to a regular sewage discharge expansion vessel with self-water sealing function, a drainage system and a method. Background technique [0002] At present, the length of the sewage outlet pipe of the commonly used fixed-row expansion vessel extending into the expansion vessel is 0, and its purpose is to empty the water in the expansion vessel as completely as possible. However, the expander faces the problem of scouring, and the prior art discloses (such as CN103353106A) that it adopts a wear-resistant lining stainless steel plate or adds a buffer plate, a deflector (such as CN206269112U), a spray energy dissipation device (such as CN206269112U) at the fixed discharge inlet CN103277787A) and other schemes. In essence, the above schemes use hard materials or parts that are easy to be repaired and replaced (such as spray pipes) to replace the steel plate at the bottom of ...

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): F22B37/54
Inventor 刘义达李官鹏祁金胜冯玉滨
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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