CN201650446U

CN201650446U - Efficient methane engine

Info

Publication number: CN201650446U
Application number: CN2010201713342U
Authority: CN
Inventors: 何宏舟
Original assignee: Jimei University
Current assignee: China Datang Corp Science and Technology Research Institute Co Ltd; Jimei University
Priority date: 2010-04-19
Filing date: 2010-04-19
Publication date: 2010-11-24
Anticipated expiration: 2020-04-19

Abstract

The utility model discloses an efficient methane engine composed of an engine body, a methane-air mixer and a waste heat recovery device; the methane-air mixer is mounted on the fuel inlet of the engine body and the waste heat recovery device is mounted on the exhaust emission outlet of the engine body. As a turbolator is additionally arragned in the methane-air mixer, the gas mixture of methane and air can obtain higher turbulivity and realizes homogenous mixing, and the gas mixture is sucked into the combustion chamber of the engine under the guiding effect of a rectification connecting pipe, and then the waste heat recovery device mounted on the exhaust pipe port of the engine adopts a heat pipe heat exchanger to recover the emission waste heat and preheat the methane, so the methane is easy to catch fire; thereby, the efficient methane engine has the advantages of sufficient methane combustion, engine exhaust emission waste heat recovery and higher system comprehensive energy utilization efficiency.

Description

The efficient methane motor

Technical field

The utility model relates to a kind of utilization of new energy resources and field of energy-saving technology, particularly relates to a kind of efficient methane motor.

Background technique

Biogas is a kind of inflammable gas with higher calorific value, is a kind of inexhaustible, nexhaustible renewable energy sources resource.Marsh gas power generation is a kind of effective means that the biogas high-efficiency cleaning utilizes, it not only can provide the electric energy of cleaning, and can also solve the greenhouse gas emission problem of bringing because of biomass ferment, help turning waste into wealth, realize comprehensive utilization of resources, reduce the discharging of greenhouse gases, become an important technology of waste minimizing, innocuity treatment, for new way has been opened up in the biomass energy comprehensive utilization of the vast rural area of China.

The biogas resource of China is very abundant.In recent years, along with China advances new countryside construction, the methane-generating pit construction is subsidized in state revenue and expenditure energetically, has further transferred the enthusiasm of peasant's construction methane generating pit especially.According to estimates, by 2010, national rural development biomass pool will reach 4,000 ten thousand mouthfuls, produce about 150 billion cubic meters of biogas per year, and what wherein be suitable for developing marsh gas power generation accounts for 11.5% of sum.

At present, the methane fuelled engine ubiquity of selling on the market has the lower problem of comprehensive utilization of energy rate.The reason here is much very complicated, two major reasons are wherein arranged, the one, evenly (methane fuelled engine in the market is used for combustion power generation with biogas to biogas inadequately with Air mixing before entering engine chamber, but do not provide suitable mixer to come biogas is evenly mixed with air before the burning), cause its not fully burning in the firing chamber (sometimes even can because of mixing the inhomogeneous motor auto extinguishing phenomenon that causes), effective utilization rate of energy is not high, and causes motor undercapacity and efficient on the low side.The 2nd, methane fuelled engine discharging exhaust temperature is higher, waste heat fail to be utilized effectively (gas of combustion of biogas generator all directly is discharged in the atmosphere in the market, exhaust heat is not utilized).Because the biogas composition is based on methane, there are point of ignition height, velocity of combustion to wait burning feature slowly, make often to occur failing timely after-flame phenomenon in the burning of biogas in cylinder, influenced the combustion efficiency of its firing effect and motor, and caused certain energy resources waste.Therefore, design and develop a efficient clean burn methane fuelled engine technology, biogas and air can evenly be mixed before entering engine chamber, and utilize recovery engine exhaust complementary energy that fuel biogas is carried out preheating to improve its combustion velocity, and then the combustion efficiency and the thermal efficiency of raising motor, wide market application prospect will be arranged.

The model utility content

The purpose of this utility model is to provide a kind of efficient methane motor that has than the high burning efficiency and the thermal efficiency.

For achieving the above object, technical solution of the present utility model is:

The utility model is a kind of efficient methane motor, and it mainly is made up of engine body, biogas and air mixer, waste heat recovering device; Described biogas and air mixer are installed on fuel inlet place of engine body, and waste heat recovering device is installed on the outlet port of engine body toxic emission.

Described waste heat recovering device mainly is made up of anechoic chamber, heat pipe, dividing plate, pass partition and fin; Described anechoic chamber is an airtight cavity, it is divided into upper and lower two spaces by the dividing plate of cross setting, be respectively applied for circulation biogas and flue gas, biogas suction port and flue gas air outlet are set on a sidewall, biogas air outlet and smoke air inlet are set on another sidewall, and biogas suction port and biogas air outlet are positioned at the top of anechoic chamber, communicate with the upper space of anechoic chamber, smoke air inlet and flue gas air outlet are positioned at the bottom of anechoic chamber, communicate with the lower space of anechoic chamber; Described heat pipe longitudinally is installed in anechoic chamber's cavity and passes the dividing plate that is horizontally set at anechoic chamber's cavity, is arranged on the heat pipe on cavity top, anechoic chamber and can be socketed with fin; Described pass partition is longitudinally installed in the lower space of anechoic chamber's cavity, and the gas flow in the middle of smoke air inlet that will communicate with anechoic chamber's lower space and the flue gas air outlet is separated into zigzag path.

Described pass partition has two, and two pass partitions are parallel, relative, be arranged in anechoic chamber's lower space at interval, and the gas flow in the middle of smoke air inlet and the flue gas air outlet is separated into approximate zigzag path.

Described biogas and air mixer mainly are made up of concentric circle admission line, filter cleaner, gas mixer chamber, rectification connecting tube; The inner of described concentric circle admission line connects an end of gas mixer chamber, and the other end of gas mixer chamber connects the rectification connecting tube; Described concentric circle admission line is made of air intake pipe and biogas admission line, the biogas admission line is nested with the central authorities at air intake pipe, between biogas admission line and air intake pipe, form the annular pass of air ventilation, the filter cleaner that is used for filtered air is installed in this annular pass; In gas mixer chamber, turbolator is installed along its axis.

Described turbolator is made of spiral helicine a plurality of blades.

Described turbolator is made of a plurality of blades that equidistantly are installed in the rotating shaft.

After adopting such scheme, because biogas of the present utility model and air mixer are installed on the firing chamber inlet of motor, the engine exhaust heat recovering device is installed on the combustion product gases outlet port of motor, in biogas and air mixer, set up turbolator, making biogas and Air mixing gas can obtain higher turbulivity also realizes evenly mixing, under the guiding of rectification connecting tube, be inhaled into engine chamber, again by waste heat recovering device in the installation of engine exhaust mouth of pipe place, utilize heat pipe heat exchanger recovery engine exhaust heat and fuel biogas is carried out preheating, make it be easy to fire burns; Thereby make and the utlity model has biogas sufficient combustion, engine exhaust heat recovery, system synthesis efficiency of energy utilization than characteristics such as height.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sectional view of the utility model biogas and air mixer;

Fig. 3 is the side view of the utility model biogas and air mixer;

Fig. 4-Fig. 7 is front view, left side view, right side view, the plan view of the utility model waste heat recovering device;

Fig. 8 is the isometric cutaway view of Fig. 7 along the D-D line;

Fig. 9 is the isometric cutaway view of Fig. 4 along the B-B line.

Embodiment

As shown in Figure 1, the utility model is a kind of efficient methane motor, and it mainly is made up of with air mixer 2, waste heat recovering device 3 engine body 1, biogas.

Described biogas and air mixer 2 are installed on fuel inlet place of engine body 1, and waste heat recovering device 3 is installed on the outlet port of engine body 1 toxic emission.

As Fig. 2-shown in Figure 3, described biogas and air mixer 2 mainly are made up of concentric circle admission line 21, filter cleaner 22, gas mixer chamber 23, rectification connecting tube 24.The inner of described concentric circle admission line 21 connects an end of gas mixer chamber 23, and the other end of gas mixer chamber 23 connects rectification connecting tube 24.Described concentric circle admission line 21 is made of air intake pipe 211 and biogas admission line 212; Biogas admission line 212 is nested with the central authorities at air intake pipe 11, forms the annular pass 213 of air ventilation between biogas admission line 212 and air intake pipe 211, and the filter cleaner 22 that is used for filtered air is installed in this annular pass 213; In gas mixer chamber 23, turbolator 231 is installed along its axis.Described turbolator 231 is made of spiral helicine a plurality of blades.Described turbolator 231 also can be made of a plurality of blades that equidistantly are installed in the rotating shaft.

As Fig. 4-shown in Figure 9, described waste heat recovering device 3 mainly is made up of anechoic chamber 31, heat pipe 32, dividing plate 33, pass partition 34 and fin 35.Described anechoic chamber 31 is an airtight cavity, it is divided into upper and lower two spaces by the dividing plate 33 of cross setting, be respectively applied for circulation biogas and flue gas, biogas suction port 311 and flue gas air outlet 312 are set on a sidewall, biogas air outlet 313 and smoke air inlet 314 are set on another sidewall, the top that biogas suction port 311 and biogas air outlet 313 are positioned at anechoic chamber 31 communicates with the upper space of anechoic chamber 31, smoke air inlet 312 and flue gas air outlet 313 are positioned at the bottom of anechoic chamber 31, communicate with the lower space of anechoic chamber 31; Described heat pipe 32 longitudinally is installed in anechoic chamber's 31 cavitys and passes the dividing plate 33 that is horizontally set at anechoic chamber's 31 cavitys, is arranged on the heat pipe 32 on 31 cavity tops, anechoic chamber and is socketed with fin 35; Described pass partition 34 is longitudinally installed in the lower space of anechoic chamber's 31 cavitys, and the gas flow in the middle of smoke air inlet 314 that will communicate with anechoic chamber's 31 lower space and the flue gas air outlet 312 is separated into zigzag path.

Described pass partition 34 has two, and two pass partitions are parallel, relative, be arranged in anechoic chamber's 31 lower space at interval, and the gas flows in the middle of smoke air inlet 314 and the flue gas air outlet 312 are separated into approximate zigzag path.

Working principle of the present utility model:

As Fig. 1 with reference to figure 2, shown in Figure 8, the utility model is equipped with turbolator 231 by design biogas makes biogas and air realize evenly mixing in gas mixer chamber 23 with air mixer 2, by being inhaled into fully burning in engine body 1 firing chamber behind the rectification connecting tube 24; By design and installation exhaust heat recovering device 3, utilize heat pipe 32 heat exchangers to reclaim exhaust heat and be used for pre-heating fuel biogas, make it be easy to burning and after-flame, improved the combustion efficiency of motor and the utilization results of energy of system.

Claims

1. efficient methane motor, it is characterized in that: it mainly is made up of engine body, biogas and air mixer, waste heat recovering device; Described biogas and air mixer are installed on fuel inlet place of engine body, and waste heat recovering device is installed on the outlet port of engine body toxic emission.

2. efficient methane motor according to claim 1 is characterized in that: described waste heat recovering device mainly is made up of anechoic chamber, heat pipe, dividing plate, pass partition and fin; Described anechoic chamber is an airtight cavity, it is divided into upper and lower two spaces by the dividing plate of cross setting, be respectively applied for circulation biogas and flue gas, biogas suction port and flue gas air outlet are set on a sidewall, biogas air outlet and smoke air inlet are set on another sidewall, and biogas suction port and biogas air outlet are positioned at the top of anechoic chamber, communicate with the upper space of anechoic chamber, smoke air inlet and flue gas air outlet are positioned at the bottom of anechoic chamber, communicate with the lower space of anechoic chamber; Described heat pipe longitudinally is installed in anechoic chamber's cavity and passes the dividing plate that is horizontally set at anechoic chamber's cavity, is arranged on the heat pipe on cavity top, anechoic chamber and can be socketed with fin; Described pass partition is longitudinally installed in the lower space of anechoic chamber's cavity, and the gas flow in the middle of smoke air inlet that will communicate with anechoic chamber's lower space and the flue gas air outlet is separated into zigzag path.

3. efficient methane motor according to claim 2, it is characterized in that: described pass partition has two, two pass partitions are parallel, relative, be arranged in anechoic chamber's lower space at interval, and the gas flow in the middle of smoke air inlet and the flue gas air outlet is separated into approximate zigzag path.

4. efficient methane motor according to claim 1 is characterized in that: described biogas and air mixer mainly are made up of concentric circle admission line, filter cleaner, gas mixer chamber, rectification connecting tube; The inner of described concentric circle admission line connects an end of gas mixer chamber, and the other end of gas mixer chamber connects the rectification connecting tube; Described concentric circle admission line is made of air intake pipe and biogas admission line, the biogas admission line is nested with the central authorities at air intake pipe, between biogas admission line and air intake pipe, form the annular pass of air ventilation, the filter cleaner that is used for filtered air is installed in this annular pass; In gas mixer chamber, turbolator is installed along its axis.

5. efficient methane motor according to claim 4 is characterized in that: described turbolator is made of spiral helicine a plurality of blades.

6. efficient methane motor according to claim 4 is characterized in that: described turbolator is made of a plurality of blades that equidistantly are installed in the rotating shaft.