CN2258227Y

CN2258227Y - Thermal energy recovery apparatus for engine exhaust pipe

Info

Publication number: CN2258227Y
Application number: CN 96212213
Authority: CN
Inventors: 李尔冬
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-31
Filing date: 1996-05-31
Publication date: 1997-07-23
Anticipated expiration: 2006-05-31

Abstract

The utility model relates to a thermal energy recovering apparatus for an engine exhaust pipe, which is composed of a water sleeve arranged on an exhaust pipe, wherein both ends of which are welded with the exhaust pipe, a gas outlet pipe which is arranged above the water sleeve, a pressure limiting valve, a water charging pipe which is arranged below the water sleeve and a water discharging pipe which is provided with a valve, wherein the lower part of the water charging pipe is provided with a float chamber, the top part and the bottom part of the float chamber are respectively communicated with the water charging pipe, a floater is arranged in the float chamber, the top part of the floater is provided with valve body of a needle-shaped valve, and the top part of the float chamber is provided with a valve seat which is matched with the valve body and is provided with a hole communicated with the water charging pipe. The utility model has the advantages that the simple structure, waste heat can be sufficiently recovered, steam and heat source can be generated, etc.

Description

The engine exhaust pipe heat-energy recovering apparatus

The utility model relates to the motor car engine waste heat recovery plant, relates in particular to a kind of engine exhaust pipe heat-energy recovering apparatus.

The temperature of exhaust reaches 400 ℃-600 ℃ (to diesel engine) or 600 ℃-900 ℃ (petrol engine) in the engine exhaust pipe, but for a long time, this kind used heat fails to be utilized.

The purpose of this utility model is to provide a kind of engine exhaust pipe heat-energy recovering apparatus that is used for bus, truck, outlet pipe is arranged used heat in atmosphere, the heating, the steam box that are used for railway carriage go in being provided with, thereby realize the used heat comprehensive utilization, to save the energy, and high and cold district operator cabin and compartment raising temperature, and improve the journey condition.

The purpose of this utility model is a kind of engine exhaust pipe heat-energy recovering apparatus of realizing like this, comprise a heat exchanger, it is characterized in that this heat exchanger is that two ends are welded in the water jacket on the engine exhaust pipe, the top of water jacket is provided with an air outlet hole that links to each other with steam outlet pipe and a pressure-limit valve, the air outlet hole height is higher than horizontal plane in the water jacket, the water jacket below is provided with one can make its filler pipe that is connected with water tank and one have the offlet of valve, be provided with a float chamber in the bottom of filler pipe, the top of float chamber, the bottom be respectively equipped with one be connected with filler pipe advance, outlet, in float chamber, be provided with a float and two float guide rods, be provided with a needle value valve body at the float top, be provided with the valve seat that matches of valve body therewith at the float chamber top, and this valve seat is provided with a hole that is connected with the filler pipe water intake.

The heat exchanger of said structure fills Yi Shui in water jacket, the used heat of the outlet pipe of motor car engine can tens minutes in twenty a few minutes, just the water in the water jacket can be become steam, generally when the water jacket hot area is 0.01 square metre, 1.5 the water of kilogram can evaporate about 1 hour, especially as an arcola, water in the water tank enters water jacket by filler pipe through float chamber, and realization interruption water supply by the control of the needle value on the float in the water jacket, and the just delivering vapor heat supply discontinuously of this boiler, thereby make used heat utilized.

With embodiment and accompanying drawing structure of the present utility model and application are described in detail below.

Description of drawings

Fig. 1 overall structure schematic representation of the present utility model

Fig. 2 is a float type mitre velve work schematic representation

Fig. 3 is an application feature schematic representation of the present utility model

By visible the utility model shown in Figure 1 by water jacket 2 that to be two ends weld mutually with engine exhaust pipe 1, above water jacket 2, be provided with an air outlet hole 21 that links to each other with steam outlet pipe 3 and a pressure-limit valve 4, the height of exit orifice 21 should be higher than the horizontal plane in the water jacket 2, below water jacket 2, be provided with one and can make its filler pipe that is connected with water tank 5, with an offlet 6 that has a valve 7, be provided with a float chamber 9 in the bottom of filler pipe 5, be provided with a float 91 in the float chamber 9, two float guide rods 92, float 91 tops are provided with an aciculiform valve body 93, be provided with a valve seat 94 that matches with aciculiform valve body 93 at float chamber 9 tops, and this valve seat 94 is provided with the hole 941 that is connected with filler pipe water intake 51, pushes up at float chamber, the bottom is provided with a turnover that is connected with filler pipe 5, the mouth of a

river

51,52.

The size of used water jacket, length all can be pressed conventional calculating of heat exchange according to institute's calorific requirement and motor kind, outlet pipe exhaust gas temperature and got in the said structure, and can be designed to series product according to different automobile types.

Now the JG110-5B h type engine h with linghe board load-carrying vehicle equipment is an example, its minimum fuel consumption is 110KW/3000r/min for 231g/kw-b rated power, the heat of outlet pipe is 40640 kilocalories/hour, our heat-energy recovering apparatus of design is 0.098 square metre of calculating with hot area, and attract outlet pipe used heat to calculate with 60% with water, the water area that absorbs heat calculates with 80%, the water (water that is equivalent to 1500CC) that then obtains 1.5 kilograms is warmed up to 100 ℃ of used times for only needing 10 minutes from 10 ℃, that is the heat of outlet pipe can become steam with the water in the heat exchanger very soon, and through test, this heat recovering device not only waste heat recovery is effective, its high-temperature mechanical property, creep rupture strength, water-fast corrosivity is all fine, and breaking does not all appear in the outlet pipe heating surface, distortion, phenomenons such as fatigue damage, do not take place cold short yet, heat, phenomenons such as crisp and red heat this shows that this device has good practicability.

And the hot area through testing above-mentioned heat-energy recovering apparatus is when being 0.01 square metre, and its water of 1.5 kilograms can evaporate about 1 hour.

In addition, can adopt rubber pipe in order to make exhaust manifolds, the utility model can be 100mm with air outlet hole place steam outlet pipe lengthening.In addition, through the adding of the above-mentioned recovering device of evidence the temperature of outlet pipe is reduced, exhaust resistance reduces, and duty of engine rate is improved and exhaust sound reduces.

By visible this engine exhaust pipe heat-energy recovering apparatus 10 shown in Figure 3, it can fully reclaim the high-temperature heat energy of engine exhaust pipe, and directly produce steam with this, this steam deliver to operator cabin, compartment radiator 12, be used for heating, also can give steam box 11, be used for cooking food, so not only saved the energy, and the trudge life thermal source problem of fleet of extremely frigid zones is for a long time satisfactorily resolved.

Claims

1, a kind of engine exhaust pipe heat-energy recovering apparatus, comprise a heat exchanger, it is characterized in that this heat exchanger is that two ends are welded in the water jacket on the engine exhaust pipe, the top of water jacket is provided with an air outlet hole that links to each other with steam outlet pipe and a pressure-limit valve, the air outlet hole height is higher than horizontal plane in the water jacket, the water jacket below is provided with one can make its filler pipe that is connected with water tank and one have the offlet of valve, be provided with a float chamber at the middle part of filler pipe, the top/bottom part branch of float chamber be respectively equipped with one be connected with filler pipe advance, outlet, in float chamber, be provided with a float and two float guide rods, be provided with a needle value valve body at the float top, be provided with the valve seat that matches of valve body therewith at the float chamber top, and this valve seat is provided with a hole that is connected with the filler pipe water intake.