CN202611923U - Flue gas waste heat recovery device - Google Patents
Flue gas waste heat recovery device Download PDFInfo
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- CN202611923U CN202611923U CN 201220296730 CN201220296730U CN202611923U CN 202611923 U CN202611923 U CN 202611923U CN 201220296730 CN201220296730 CN 201220296730 CN 201220296730 U CN201220296730 U CN 201220296730U CN 202611923 U CN202611923 U CN 202611923U
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- flue gas
- waste heat
- piston
- chamber
- gas waste
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Abstract
The utility model discloses a flue gas waste heat recovery device. The device is mainly used for recovering flue gas waste heat of a thermal power plant and reusing the waste heat through energy conversion. The device comprises a hot chamber, a cold chamber, a piston, a connecting rod, a crank and a flywheel, the piston is disposed in the hot chamber and the cold chamber, the front end of the piston is located in a cylinder of the hot chamber, the tail end of the piston is located in the cylinder of the cold chamber, the tail end of the piston is connected with the crank through the connecting rod, and the tail end of the crank is connected with the flywheel through a transmission shaft. A heat exchange fin is mounted on the cold chamber and is in contact with a cold source, so that the heat dissipation effect is improved, and the cooling for the cold chamber is accelerated. According to the flue gas waste heat recovery device, the flue gas waste heat can be efficiently recycled, the device is prevented from being affected by factors of regions, environment and the like, and the device is applicable to most of present thermal power plants.
Description
Technical field
The utility model relates to the energy-conserving and environment-protective field, mainly is the power-plant flue gas waste heat is reclaimed, and utilizes through Conversion of energy again, is a kind of flue gas waste heat recovery apparatus.
Background technique
In the thermal power plant, the heat loss due to exhaust gas of boiler accounts for 70%～80% of boiler heat loss.The heating surface pollution level was aggravated along with the boiler operatiopn time, and temperature of exhaust fume is higher 20～30 ℃ than design temperature.In China, there is higher, the long fired power generating unit of time that puts into operation of large quantities of exhaust gas temperatures, exhaust gas temperature reaches as high as about 200 ℃, and the new exhaust gas temperature of speculating group is also about 120～140 ℃.If can utilize new technology and technology to reduce exhaust gas temperature, recycle fume afterheat, with the coal consumption that effectively reduces the thermal power plant, energy saving reduces discharging.
Domestic flue gas waste heat recovery method has heat pipe heat exchanging, dewatered sludge and heating in winter etc. at present.But all there is big drawback in these technology, and wherein heat pipe heat exchanging is lower to utilization rate of waste heat, and need constantly to add new heat transferring medium.Dewatered sludge technology institute is restricted more, and the one, the mud total amount is limited, is only applicable to part power plant, and cost of transportation is higher, and required human resources are more; The 2nd, lower to utilization rate of waste heat, aspect resource, caused very big waste.Aspect heating, be subject to restrictions such as geography, time, season, number of users, lower to the afterheat utilization rate.
Summary of the invention
The utility model to solve the flue gas waste heat recovery utilization ratio low, be subject to problems such as effects limit such as environment, the flue gas waste heat recovery apparatus based on Stirling engine has been proposed.With reference to Stirling engine mechanism, we have done new design to its profile in order to improve reuse efficiency, increase the hot cavity segment of Stirling engine and the area of contact of flue gas, improve the efficient of heat exchange.
The design proposal of the utility model is following: flue gas waste heat recovery apparatus; Include hot chamber, cold chamber, piston, connecting rod, crank and flywheel; Hot chamber is connected with many outside metal tubes, and metal tube inside is cavity, and with the internal communication in hot chamber; Be used to increase the area of contact with flue gas, improve rate of heat exchange.A piston is set in hot chamber and cold chamber, and the front end of piston is positioned at the cylinder in hot chamber, and end is positioned at the cylinder in cold chamber, and piston end is connected with crank through connecting rod, and the end of crank is connected with flywheel through transmission shaft.Cold chamber is provided with heat exchange sheet, lets it contact with low-temperature receiver, strengthens radiating effect, accelerates the cooling to cold chamber.For better fixed installation, whole device is provided with support 1, support 2 and pedestal, and support 1 supports hot chamber and cold chamber, and is connected with pedestal, and support 2 supports crank and flywheel, and is connected with pedestal.
Airtight cylinder of the inner composition in hot chamber and cold chamber, piston places cylinder.Hot chamber makes the air expansion in the hot chamber through drawing the heat of flue gas, promotes piston and moves to cold chamber; Contact with low-temperature receiver through the heat exchange sheet on the cold chamber simultaneously, to cold chamber fast cooling, the back and forth movement that piston is continued between hot chamber and cold chamber; And then promotion connecting rod; Drive crank, transfer the energy on the flywheel, realize the conversion of energy.
Flue gas waste heat recovery apparatus absorbs the heat energy of flue gas; And heat energy is converted into the reciprocal kinetic energy of piston; Rely on connecting rod and crank, the reciprocal kinetic energy of piston linear motion is converted into the rotation function of flywheel, finally rely on the rotation of flywheel; Can drive coil cutting magnetic induction line generation electric energy mechanical energy is converted into electric energy, realize the recycling of fume afterheat.
Like the power station of 2*300MW, a day generated energy is about 1,440 ten thousand degree electricity (24 hours full sending out), and the exhaust gas volumn of generation is about 46 * 10
6m
3, 180 ° of C of inlet temperature, during 60 ° of C of outlet temperature, heat source temperature T
1=180 ℃=453K, sink temperature T
2=60 ℃=333K, the Stirling cycle efficiency
η=(T
1-T
2)/T
1=120/453 * 100%=26.5%, the flue gas specific heat capacity
Cp=1.005KJ/ (KgK), density
ρ=1.293kg/m
3, the theoretical total amount of heat that absorbs of flue gas waste heat recovery apparatus is:
Q=
Δ TCpV ρ η=(180-60) * 1.005 * 46 * 10
6* 1.293 * 26.5%=1.9 * 10
9KJ; The conversion efficiency of thermoelectric of Stirling engine can reach 32-40%, and the design's efficient gets 35%, and getting the flue gas waste heat recovery apparatus theoretical power (horse-power) is 1.9 * 10
9* 35%=6.65 * 10
8KJ; Be to give birth to 18.5 ten thousand degree electricity by fecund in theory every day, power generating capacity is improved 1.28%.Above result of calculation is theoretical effect, and practical efficiency is estimated to reach more than 90% of theoretical effect, can improve generating field generated energy about 1.1%.
The utility model is simple in structure, and implementation cost is low, can recycle fume afterheat efficiently; Do not receive the influence of factors such as region and environment; Be a kind of both energy-conservation, the flue gas waste heat recovery re-use device of environmental protection is fit to be applied to most at present thermal power plants again.
Description of drawings
Fig. 1 is embodiment 1 a structural representation;
Wherein 1---hot chamber, 2---cold chamber, 3---piston, 4---heat exchange sheet, 5---connecting rod, 6---crank, 7---flywheel, 8---support 1,9--- support 2,10---pedestal, 11---metal tube, 12---transmission shaft.
Embodiment
Below in conjunction with specific embodiment and Figure of description the utility model is described further.Specific embodiment described herein is only in order to explaining the utility model, and is not used in qualification the utility model.
Embodiment 1: flue gas waste heat recovery apparatus includes hot chamber, cold chamber, piston, connecting rod, crank and flywheel.Wherein hot chamber is connected with many outside metal tubes, is used to strengthen the area of contact with flue gas, accelerates to be heated.Metal tube inside is cavity, and with the internal communication in hot chamber.Cold chamber is provided with heat exchange sheet, and heat exchange sheet contacts with low-temperature receiver.Airtight cylinder of the inner composition in hot chamber and cold chamber is provided with a piston in cylinder, the front end of piston is positioned at hot chamber, and end is positioned at cold chamber, and piston can be done back and forth movement between hot chamber and cold chamber.
Piston end is connected with crank through connecting rod, and the end of crank is connected with flywheel through transmission shaft.Whole bottom of device is provided with pedestal, and support 1 and support 2.Support 1 supports hot chamber and cold chamber, and is connected with pedestal, and support 2 supports crank and flywheel, and is connected with pedestal.
In the airtight cylinder of hot chamber and cold chamber composition, when hot chamber draw heat, make the air expansion in the cylinder, pressure forces reciprocating motion of the pistons greater than cold chamber pressure, promptly is converted into heat energy the kinetic energy of piston.Through connecting rod and crank the reciprocal kinetic energy of piston is converted into the rotation function of flywheel again, produces electric energy, realize the conversion and the recycling of energy by flywheel rotating band moving winding cutting magnetic induction line.
The utility model has been realized the recycling to the power station residual heat of exhaust flue gas, and transformation efficiency is high, and energy-conserving and environment-protective are adapted at applying in the thermal power plant.
Be the utility model preferred embodiment in sum, all changes of being made according to the utility model technological scheme, the function of being produced all belong to the protection domain of the utility model when not exceeding the scope of the utility model technological scheme.
Claims (5)
1. flue gas waste heat recovery apparatus; Include hot chamber, cold chamber, piston, connecting rod, crank and flywheel; It is characterized in that hot chamber is connected with many outside metal tubes, piston nose is positioned at hot chamber, and end is positioned at cold chamber; Piston end is connected with crank through connecting rod, and the end of crank is connected with flywheel through transmission shaft.
2. according to the said flue gas waste heat recovery apparatus of claim 1, it is characterized in that airtight cylinder of the inner composition in described hot chamber and cold chamber, piston can be done back and forth movement therein.
3. according to the said flue gas waste heat recovery apparatus of claim 1, it is characterized in that described metal tube is inner and be cavity, and with the internal communication in hot chamber.
4. according to the said flue gas waste heat recovery apparatus of claim 1, it is characterized in that described cold chamber is outside equipped with heat exchange sheet.
5. according to the said flue gas waste heat recovery apparatus of claim 1, it is characterized in that described device is provided with support 1, support 2 and pedestal, support 1 supports hot chamber and cold chamber, and is connected with pedestal, and support 2 supports crank and flywheel, and is connected with pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296730 CN202611923U (en) | 2012-06-25 | 2012-06-25 | Flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296730 CN202611923U (en) | 2012-06-25 | 2012-06-25 | Flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611923U true CN202611923U (en) | 2012-12-19 |
Family
ID=47345629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220296730 Expired - Fee Related CN202611923U (en) | 2012-06-25 | 2012-06-25 | Flue gas waste heat recovery device |
Country Status (1)
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| CN (1) | CN202611923U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500264A (en) * | 2014-10-20 | 2015-04-08 | 北京航空航天大学 | Open-close type Stirling heat-power conversion mechanism |
| CN106761985A (en) * | 2016-12-05 | 2017-05-31 | 章晓晓 | A kind of device for generating power by waste heat |
| CN107960879A (en) * | 2017-11-29 | 2018-04-27 | 曹鹏飞 | A kind of efficient barbecue machine |
| CN108110950A (en) * | 2017-12-21 | 2018-06-01 | 重庆麦纳昇科技有限公司 | Energy-saving power distribution cabinet electricity generation system |
| CN108979774A (en) * | 2018-09-14 | 2018-12-11 | 广东兴发铝业（河南）有限公司 | Device for recycling heat in aluminum profile process |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN113739590A (en) * | 2021-09-23 | 2021-12-03 | 普霖太阳(郑州)能源动力有限公司 | Flue gas cooling and waste heat power generation integrated device |
-
2012
- 2012-06-25 CN CN 201220296730 patent/CN202611923U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500264A (en) * | 2014-10-20 | 2015-04-08 | 北京航空航天大学 | Open-close type Stirling heat-power conversion mechanism |
| CN106761985A (en) * | 2016-12-05 | 2017-05-31 | 章晓晓 | A kind of device for generating power by waste heat |
| CN107960879A (en) * | 2017-11-29 | 2018-04-27 | 曹鹏飞 | A kind of efficient barbecue machine |
| CN107960879B (en) * | 2017-11-29 | 2020-12-08 | 温州如剑环保科技有限公司 | High-efficient barbecue machine |
| CN108110950A (en) * | 2017-12-21 | 2018-06-01 | 重庆麦纳昇科技有限公司 | Energy-saving power distribution cabinet electricity generation system |
| CN108979774A (en) * | 2018-09-14 | 2018-12-11 | 广东兴发铝业（河南）有限公司 | Device for recycling heat in aluminum profile process |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN113739590A (en) * | 2021-09-23 | 2021-12-03 | 普霖太阳(郑州)能源动力有限公司 | Flue gas cooling and waste heat power generation integrated device |
| CN113739590B (en) * | 2021-09-23 | 2024-04-09 | 普霖太阳(郑州)能源动力有限公司 | Flue gas cooling and waste heat power generation integrated device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130625 |