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

Tail gas waste heat recovery and turbine acceleration device

A technology of waste heat recovery and acceleration device, which is applied in the direction of exhaust device, muffler device, steam engine device, etc. It can solve the problems of limited net mechanical work, shortened engine life, increased impact force between piston and cylinder liner, etc., to increase available energy , reduce the average back pressure, improve the effect of acceleration

Active Publication Date: 2019-11-15
乐元
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, scale will inevitably shorten engine life, improving water purity can alleviate this problem
Due to the drastic change of the metal temperature of the cylinder, the gap between the piston and the cylinder liner must be increased, resulting in a significant increase in the impact force between the piston and the cylinder liner, and the life of the engine is significantly shortened
Due to the high friction of the piston mechanism of the engine body, the net mechanical work that can be recovered is very limited
The average pressure of the 5th and 6th strokes is lower than that of the four-stroke, and at the same crankshaft speed, the power density of the six-stroke is lower than that of the four-stroke
[0018] On the other hand, for all devices using regenerators, the efficiency of converting exhaust waste heat into mechanical work is significantly lower than that of devices without regenerators

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
  • Tail gas waste heat recovery and turbine acceleration device
  • Tail gas waste heat recovery and turbine acceleration device
  • Tail gas waste heat recovery and turbine acceleration device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Such as figure 1 As shown, 1 is the turbine outlet, 2 is the tailpipe, 3 is the sprayed water mist, 4 is the water mist nozzle, and 5 is the end valve.

[0028] The present invention has two working modes:

[0029] 1. The water mist nozzle always works with the engine body and consumes a lot of water. When the high-temperature exhaust gas fills the entire tailpipe, the end valve is closed, water mist is sprayed, the pressure of the tailpipe drops significantly, the turbine accelerates, and the temperature of the exhaust gas flowing out of the turbine decreases relatively. When the gas in the tailpipe basically turns into low-temperature exhaust gas, the end valve opens, and the high-temperature exhaust gas squeezes out the low-temperature exhaust gas to start the next working cycle.

[0030] 2. The water mist nozzle only works when the turbine needs to be accelerated. When the turbine is running in a steady state, the sprayer does not work, saving water. Alternativel...

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 indirect-recovery type reciprocating engine. The engine is used for converting waste heat of a turbine or industrial tail gas into mechanical work. Water mist is sprayed periodically through an exhaust pipe, backpressure of the turbine is reduced, and more tail gas waste heat is converted into the turbine mechanical work. The pressurization degree of the reciprocating engine can be greatly improved, and the power increase amplitude is comparable to that of an afterburning pressurization system. An air excess coefficient is greatly increased, and the oil consumption is obviously reduced. The engine can also be used for air conditioning refrigeration.

Description

technical field [0001] The invention relates to the field of utilization of piston engine, gas turbine or industrial tail gas waste heat, especially the field of indirect use of tail gas waste heat to do mechanical work. Background technique [0002] The existing waste heat recovery methods of exhaust gas are as follows: [0003] 1. Keep warm. But demand is not big; For example " the muffler for the heavy-duty truck that utilizes waste heat of engine to heat cargo box, publication (announcement) number: CN202338413U ". [0004] Refrigeration. The structure of absorption air conditioner is very complex and bulky. The vacuum degree is very high. Once the pipeline is corroded and leaks, the refrigeration capacity will be lost; the maintenance is cumbersome. Moreover, the thermal inertia of the pipeline and the refrigerant is large, and it takes a while to cool after starting. Lithium bromide thermal refrigeration on internal combustion engines cannot be applied to running ...

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 Applications(China)
IPC IPC(8): F01D25/00F01N5/02F02G5/02F01K21/04F01K27/00
CPCF01D25/00F01N5/02F02G5/02F01K21/04F01K27/00Y02T10/12
Inventor 乐元
Owner 乐元
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