CN203769898U

CN203769898U - Diesel generating set exhaust waste heat assistant driving system

Info

Publication number: CN203769898U
Application number: CN201420182597.1U
Authority: CN
Inventors: 段新燕; 胡以君
Original assignee: Changsha Vocational and Technical College
Current assignee: Changsha Vocational and Technical College
Priority date: 2014-04-16
Filing date: 2014-04-16
Publication date: 2014-08-13
Anticipated expiration: 2024-04-16

Abstract

The utility model discloses a diesel generating set exhaust waste heat assistant driving system which comprises a boiler, a driving impeller and a temperature switch, wherein the chamber inlet end of the driving impeller is communicated with a gasification pot of the boiler through a pipeline, the chamber outlet end of the driving impeller is communicated with the inlet end of a condensation and liquid storage device, the outlet end of the condensation and liquid storage device is communicated with the inlet end of a gravity pressure water tank, the outlet end of the gravity pressure water tank is communicated with a preheating pot of the boiler, a cam, a speed reducer and a pressure compensation motor are installed on the top of the gravity pressure water tank, and a pressure horizontal plate capable of moving vertically under the driving of the cam is arranged in the gravity pressure water tank; an expansion valve is arranged in a pipeline between the driving impeller and the gasification pot, an electromagnetic valve is arranged in a pipeline between the preheating pot and the gravity pressure water tank, and a pressure switch is arranged on the bottom of the gravity pressure water tank. According to the diesel generating set exhaust waste heat assistant driving system, the output power of an internal combustion engine is increased greatly, and then energy consumption of a diesel generating set is reduced and pollution emission of the internal combustion engine is effectively reduced.

Description

A kind of diesel generating set exhaust heat power-assisted driving system

Technical field

The utility model relates to diesel generating set, particularly a kind of diesel generating set exhaust heat power-assisted driving system.

Background technique

The internal-combustion engine of diesel generating set is actually one and petroleum products is burnt and be converted to heat energy, again thermal power transfer is become to mechanical energy, finally mechanical energy is converted to the mechanical system of electric energy, it does not change energy in a large number in the time of work, in fact the heat energy that burning produces wasted in a large number, no matter be domestic or import diesel engine, all only be converted into utilization of mechanical energy less than 40% heat energy, approximately 40% heat energy is with exhaust mode loss, approximately 20% is depleted in engine cooling procedure, and therefore this expression wastes up to 60% the available energy.

Summary of the invention

Technical problem to be solved in the utility model is, for prior art deficiency, provide a kind of diesel generating set exhaust heat power-assisted driving system, in a large amount of absorption heat energy, make high-temperature gas in outlet pipe by cooling rapidly, increase diesel generator output power of internal combustion engine.

For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of diesel generating set exhaust heat power-assisted driving system, comprise be arranged on diesel generator gas exhaust manifold and exhaust port place high temperature position boiler, be installed on diesel generator rear end and with the coaxial drives impeller of diesel generator, be arranged on the thermal switch on diesel generator coolant duct; The chamber entry end of described drives impeller is communicated with the gasification pot of described boiler by pipeline, the chamber outlet end of described drives impeller is communicated with condensation and liquid-storage container entry end, described condensation and liquid-storage container outlet end are communicated with gravity pressure tank entry end, described gravity pressure water tank outlet end is communicated with the foreheater of described boiler, described gravity pressure tank top is provided with cam, for driving the speed reducer of described cam and for driving the pressure compensation motor of described speed reducer, being provided with the setting-out flat board that can move up and down in described gravity pressure water tank under described cam driven; In pipeline between described drives impeller and described gasification pot, be provided with expansion valve, in the pipeline of described foreheater and described gravity pressure water tank, be provided with solenoid valve, described gravity pressure water tank bottom is provided with pressure switch, described pressure switch, solenoid valve, thermal switch are all electrically connected with relay, described relay connects external power supply, and described pressure switch is electrically connected with described pressure compensation motor.

Compared with prior art, the beneficial effect that the utility model has is: the utility model is simple in structure, steam head pressure can reach 2MPa, i.e. 20 kgfs, in a large amount of absorption heat energy, make the interior high-temperature gas of outlet pipe by cooling rapidly, causing managing interior back pressure declines, exhaust resistance reduces, thereby thoroughly get rid of the gas in cylinder, the air inflow in cylinder cyclic process is increased, greatly increased output power of internal combustion engine, thereby reduce the energy consumption of diesel generating set, effectively reduced the disposal of pollutants of internal-combustion engine.

Brief description of the drawings

Fig. 1 is the utility model one example structure schematic diagram.

Embodiment

As shown in Figure 1, the utility model one embodiment comprise be arranged on diesel generator gas exhaust manifold and exhaust port place high temperature position boiler 1, be installed on diesel generator rear end and with the coaxial drives impeller 2 of diesel generator, be arranged on the thermal switch 3 on diesel generator coolant duct, the chamber entry end of described drives impeller 2 is communicated with the gasification pot 4 of described boiler by pipeline, the chamber outlet end of described drives impeller 2 is communicated with condensation and liquid-storage container 5 entry ends, the axle of described drives impeller and generator coaxle rotation, described condensation and liquid-storage container 5 outlet end are communicated with gravity pressure water tank 6 entry ends, described gravity pressure water tank 6 outlet end are communicated with the foreheater 7 of described boiler, described gravity pressure water tank 6 tops are provided with cam 16, for driving the speed reducer 8 of described cam 16 and for driving the pressure compensation motor 9 of described speed reducer 8, in described gravity pressure water tank 6, be provided with the setting-out flat board 10 that can move up and down under described cam 16 drives, in pipeline between described drives impeller 7 and described gasification pot 4, be provided with expansion valve 11, in the pipeline of described foreheater 7 and described gravity pressure water tank 6, be provided with solenoid valve 12, described gravity pressure water tank 6 bottoms are provided with pressure switch 13, described pressure switch 13, solenoid valve 12, thermal switch 3 are all electrically connected with relay 14, described relay 14 meets external power supply IG, and described pressure switch 13 is electrically connected with described pressure compensation motor 9.

The liquid water that boiler is accepted gravity pressure water tank again by high-temperature water gasification, and forms the air pressure of about 2MP after heating for the first time, and it is made up of foreheater and gasification pot, is middlely separated by dividing plate, has aperture on dividing plate; Drives impeller is born the high pressure steam that comes from expansion valve, gives generator shaft power-assisted under vapor action; The steam that comes from drives impeller is cooled to liquid water storage by condensation and water storage container, utilizes the gravity of water own that water is flowed to gravity pressure water tank, and steam inlet end is positioned at condenser overhead, and liquid water flows out to hold to be positioned near condenser and approaches bottom position; Gravity pressure water tank is higher than boiler, lower than condensation and water storage container, mainly utilize the gravity of liquid water own that liquid water is flowed to boiler oven, it is shaped as the funnel of inner wall smooth, bottom water outlet is less, is convenient to utilize the gravity of water own that liquid water is extruded from water outlet; In the time that thermal switch is connected, solenoid valve is opened, and gravity pressure water tank starts to boiler water supply; Thermal switch is arranged in engine coolant conduit, when more than 60 °, connects, and because motor is in the time just starting, Tail Pipe Temperature is lower, be unfavorable for water to gasify rapidly, when therefore engine temperature is lower by thermal switch by system closing; Pressure switch is positioned at pressure water tank bottom, connects during lower than 3MP in setting-out case base pressure; At gravity pressure water tank bottom pressure, during lower than 3MP, pressure switch is connected to the power supply of pressure compensation motor, and at gravity pressure water tank bottom pressure, during lower than 3MP, pressure switch is connected to motor power supply, and motor drives and slows down and cam mechanism drives speed reducer and cam; Speed reducer and cam be for the dynamic retarding of motor output is increased and turned round, and drives by cam mechanism that to be positioned at the setting-out flat board of water tank inside reciprocating, reaches the object of pressurizeing to gravity pressure water tank.

The utility model working principle is as follows:

Start diesel engine, engine cooling water temperature is during lower than 60 degrees Celsius, and Control thermal switch is closed, and is installed on the closed electromagnetic valve to water end (W.E.), and the circulatory system remains static.

In the time that coolant temperature reaches 60 degrees Celsius, now engine exhaust pipe gasification oven place has reached more than 150 degrees Celsius temperature, and the temperature of foreheater is about between 110-120 degree Celsius, is installed on the boiler on outlet pipe surface by the water gasification in boiler.Coolant-temperature switch is switch closure in the time that cooling liquid is more than 80 degrees Celsius, the cut-out magnetic valve being arranged on pipeline is opened, under the effect of gravity pressure water tank, liquid water is injected into foreheater and is heated to 70-80 degree Celsius, under the continuous action of gravity pressure water tank, high-temperature water injects gasification pot by dividing plate aperture, gasification pot surface up to the effect of 200 degrees Celsius under, high-temperature water was gasified by moment, form the vapor pressure of about 2MP, this steam is through pipeline, expansion valve enters drives impeller, drives impeller is rotated under high pressure steam effect, thereby power-assisted diesel generating set.When system operation, if gravity pressure water end (W.E.) pressure is lower than 3MP, pressure switch is connected, and pressure compensation motor is started working, and exerts pressure in gravity pressure tank top by deceleration and cam mechanism, and pressurised water tank hydraulic pressure, reaches pressure compensated object.

Claims

1. a diesel generating set exhaust heat power-assisted driving system, it is characterized in that, comprise be arranged on diesel generator gas exhaust manifold and exhaust port place high temperature position boiler (1), be installed on diesel generator rear end and the drives impeller (2) coaxial with diesel generator, be arranged on the thermal switch (3) on diesel generator coolant duct, the chamber entry end of described drives impeller (2) is communicated with the gasification pot (4) of described boiler by pipeline, the chamber outlet end of described drives impeller (2) is communicated with condensation and liquid-storage container (5) entry end, described condensation and liquid-storage container (5) outlet end is communicated with gravity pressure water tank (6) entry end, described gravity pressure water tank (6) outlet end is communicated with the foreheater (7) of described boiler, described gravity pressure water tank (6) top is provided with cam (16), for driving the speed reducer (8) of described cam and for driving the pressure compensation motor (9) of described speed reducer, in described gravity pressure water tank (6), be provided with the setting-out flat board (10) that can move up and down under described cam driven, in pipeline between described drives impeller (2) and described gasification pot (4), be provided with expansion valve (11), in pipeline between described foreheater (7) and described gravity pressure water tank (6), be provided with solenoid valve (12), described gravity pressure water tank (6) bottom is provided with pressure switch (13), described pressure switch (13), solenoid valve (12), thermal switch (3) are all electrically connected with relay (14), described relay (14) connects external power supply, and described pressure switch (13) is electrically connected with described pressure compensation motor (9).

2. diesel generating set exhaust heat power-assisted driving system according to claim 1, is characterized in that, described gravity pressure water tank (6) is shaped as the funnel-like of inner wall smooth, and the outlet of the less one end of described funnel-like is communicated with described foreheater (7).