CN212003319U - Deicing device using exhaust waste heat of diesel engine - Google Patents
Deicing device using exhaust waste heat of diesel engine Download PDFInfo
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- CN212003319U CN212003319U CN202020184590.9U CN202020184590U CN212003319U CN 212003319 U CN212003319 U CN 212003319U CN 202020184590 U CN202020184590 U CN 202020184590U CN 212003319 U CN212003319 U CN 212003319U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides an utilize defroster of diesel engine exhaust waste heat, include: the heat exchanger comprises a hot end heat exchange tube (1), a mixing tube (2), a cold end heat dissipation tube bank (3) and a blower (4); the mixing tube (2) comprises: an inlet section, a jet section, and an outlet section; one end of the hot end heat exchange tube (1) is inserted into the jet flow section of the mixing tube (2), and one end of the cold end heat dissipation tube bank (3) is connected with the outlet section of the mixing tube (2); the inlet section of the mixing pipe (2) is connected with a blower (4). The utility model discloses system configuration is simple, and is easy and simple to handle. The exhaust heat of the diesel engine is effectively recovered through the heat exchange tubes and the heat dissipation tube bank components, and the technical effects of heating, deicing, energy conservation and emission reduction of the radiator of the diesel engine are achieved. The deicing temperature is controlled by the high-pressure fan, the mixing pipe component and the air jet control technology.
Description
Technical Field
The utility model relates to a technical field is used in the defrosting of diesel engine radiator, ice-melt control, specifically, relates to the defroster who utilizes diesel engine exhaust waste heat.
Background
At present, the deicing technology mainly comprises electromagnetic deicing, laser deicing, electric heating deicing, gas heating deicing, mechanical deicing and the like. The deicing technologies such as electromagnetism and laser are mainly applied to the fields of electric power, aerospace and the like. The mechanical deicing is mainly widely applied to the fields of roads and power transmission. In the field of fuel oil and gas power generation equipment, an engine needs to suck a large amount of combustion air and heat dissipation air when working, and in severe cold areas, when the air temperature is low and ice and snow are more in winter, the risk of freezing of an air inlet and a heat dissipation port often exists, so that the running safety of the engine is affected, and therefore a generator set used in severe cold areas needs to be additionally provided with deicing equipment. For deicing of the engine, electric heating and gas heating are mainly adopted.
The gas turbine has large air inflow, and the air compressor can generate a large amount of high-temperature gas, so that the air can be extracted through the middle part and led to the air inlet which is easy to freeze for deicing. Although the output of the unit is influenced to a certain degree, the structure is simple, and excessive auxiliary equipment is not required to be additionally added. For a diesel generator set, because the power is low, the water tank part which is easy to freeze is usually heated by electric heating. However, the electric heating requires additional electric heating tubes and control equipment, and the power consumption is large.
The air inlet of the radiator is usually frosted and frozen in winter, the diesel engine cannot be normally started, and even electric equipment is damaged. In order to solve the problem, in the market, for an engine used in a severe cold area, electric heating deicing equipment such as an electric tracing rainproof shutter, an electric heating tube window and the like has to be additionally arranged, so that a large amount of electric energy is consumed, energy is not saved, and the equipment investment cost is relatively high.
The heat in the exhaust of the diesel engine accounts for more than one third of the total combustion heat of the fuel, and the temperature is as high as 350-550 ℃. For a high-power marine diesel engine, a waste heat boiler is usually added in an exhaust pipeline to recover energy in the exhaust pipeline and convert the energy in the exhaust into domestic hot water. The danish european corporation has developed and designed an integrated device combining a waste heat boiler and an exhaust muffler, so that the product has the functions of heating and exhaust muffling, the installation space on a ship is greatly saved, and the device is a mature case for recycling exhaust heat energy. Therefore, the heat which is directly wasted after passing through the silencer originally is transferred to the inlet part of the radiator through proper heat exchange and mixing equipment to be deiced, so that the energy is saved, the safety is realized, and the method is an effective way for solving the freezing problem of the diesel engine in the severe cold area.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing an utilize defroster of diesel engine exhaust waste heat.
According to the utility model provides a pair of utilize defroster of diesel engine exhaust waste heat, include:
the heat exchanger tube of hot end, mixing tube, cold junction heat dissipation tube bank, air-blower;
the mixing tube includes: an inlet section, a jet section, and an outlet section;
one end of the hot end heat exchange tube is inserted into the jet flow section of the mixing tube, and one end of the cold end heat dissipation tube bank is connected with the outlet section of the mixing tube;
the inlet section of the mixing tube is connected to a blower.
Preferably, the hot end heat exchange tube is arranged in the diesel engine exhaust muffler, and the inlet end of the hot end heat exchange tube is arranged outside the shell of the diesel engine exhaust muffler.
Preferably, the hot side heat exchange tube comprises: light pipe, finned tube, spiral tube, corrugated tube;
the hot end heat exchange tube is welded or connected with the diesel engine exhaust muffler through threads.
Preferably, the mixing tube comprises: an inlet section, a jet section, and an outlet section;
the outlet end of the hot end heat exchange tube is inserted into the jet flow section of the mixing tube, and an annular nozzle is formed between the outer wall of the hot end heat exchange tube and the inner wall of the mixing tube or between the outer wall of the hot end heat exchange tube and the inner wall of the mixing tube;
the inlet section of the mixing tube is connected with an air blower, the middle is a jet flow section, the front part of the jet flow section is reduced, the rear part of the jet flow section is gradually expanded, the diameter of the throat part and a curved surface molded line are designed according to the mixing ratio, and the throat part and the curved surface molded line are coaxial with the outlet of the inserted hot end heat exchange tube;
the outlet section of the mixing pipe is connected with the inlet of the cold end radiating pipe row.
Preferably, the cold end heat dissipation tube row comprises: the device comprises an inlet pipe box, a pipe row, an outlet pipe box and a side plate;
the inlet of the inlet channel box is connected with the mixing pipe, and the outlet of the inlet channel box is connected with the pipe row;
the tube bank is a main part for heat exchange and is formed by arranging one or more rows of stainless steel heat exchange tubes, and the tubes are arranged at fixed intervals or variable intervals;
the side plate, the inlet pipe box and the outlet pipe box form a shell with the periphery closed, and the side plate supports the pipe row and is connected with a diesel engine radiator.
Preferably, the blower is a direct current or alternating current high voltage blower.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses system configuration is simple, and is easy and simple to handle. The exhaust heat of the diesel engine is effectively recovered through the heat exchange tubes and the heat dissipation tube bank components, and the technical effects of heating, deicing, energy conservation and emission reduction of the radiator of the diesel engine are achieved. The deicing temperature is controlled by the high-pressure fan, the mixing pipe component and the air jet control technology.
2. The diesel engine generator set is suitable for being used outdoors in severe cold areas, the problems of frosting and icing at the inlet of the radiator are solved by utilizing the heat of exhaust smoke, and the reliability and the economical efficiency during running in winter are improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the placement of a de-icing assembly within a typical diesel generator compartment.
FIG. 2 is a schematic diagram of the arrangement of the deicing device in a 1000kW diesel engine generator set cabin.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
According to the utility model provides a pair of utilize defroster of diesel engine exhaust waste heat, include:
the heat exchanger comprises a hot end heat exchange tube 1, a mixing tube 2, a cold end heat dissipation tube bank 3 and a blower 4;
the mixing pipe 2 includes: an inlet section, a jet section, and an outlet section;
one end of the hot end heat exchange tube 1 is inserted into the jet flow section of the mixing tube 2, and one end of the cold end heat dissipation tube bank 3 is connected with the outlet section of the mixing tube 2;
the inlet section of the mixing pipe 2 is connected to a blower 4.
Specifically, the hot end heat exchange tube 1 is arranged in the diesel engine exhaust muffler, and the inlet end of the hot end heat exchange tube 1 is arranged outside the shell of the diesel engine exhaust muffler.
Specifically, the hot-side heat exchange tube 1 includes: light pipe, finned tube, spiral tube, corrugated tube;
the hot end heat exchange tube 1 is connected with the exhaust muffler of the diesel engine by welding or threads.
Specifically, the mixing tube 2 includes: an inlet section, a jet section, and an outlet section;
the outlet end of the hot end heat exchange tube 1 is inserted into the jet flow section of the mixing tube 2, and an annular nozzle is formed between the outer wall of the hot end heat exchange tube 1 and the inner wall of the mixing tube 2 or between the outer wall and the inner wall;
the inlet section of the mixing tube 2 is connected with an air blower 4, the middle is a jet flow section, the front part of the jet flow section is reduced, the rear part of the jet flow section is gradually expanded, the diameter of the throat part and a curved surface molded line are designed according to the mixing ratio, and the throat part diameter and the curved surface molded line are coaxial with the outlet of the inserted hot end heat exchange tube 1;
the outlet section of the mixing pipe 2 is connected with the inlet of the cold end radiating pipe row.
Specifically, cold end heat dissipation tube bank 3 include: the device comprises an inlet pipe box, a pipe row, an outlet pipe box and a side plate;
the inlet of the inlet channel box is connected with the mixing pipe 2, and the outlet of the inlet channel box is connected with the pipe row;
the tube bank is a main part for heat exchange and is formed by arranging one or more rows of stainless steel heat exchange tubes, and the tubes are arranged at fixed intervals or variable intervals;
the side plate, the inlet pipe box and the outlet pipe box form a shell with the periphery closed, and the side plate supports the pipe row and is connected with a diesel engine radiator.
In particular, the blower 4 is a direct current or alternating current high voltage blower.
The present invention will be described in more detail below with reference to preferred examples.
Preferred example 1:
the intellectual achievement adopts the stainless steel heat exchange tube to be embedded into the exhaust muffler, utilizes the exhaust heat to heat the air in the tube and recovers the heat in the exhaust; the air temperature at the outlet of the heat exchange tube reaches the design value by adjusting the flow quantity and the length of the heat exchange tubes in the silencer, and the air temperature at the outlet of the heat exchange tube is about 100-300 ℃. Utilize the fluidic technology, through electronic high-speed high-pressure blower with a certain amount of normal atmospheric temperature air injection ejector, under the efflux effect, high-temperature air of 0.3 ~ 2 times quality is sucked into the hybrid tube from the heat exchange tube export, high low temperature air forms 60 ~ 200 ℃ hot-air after intraductal the mixing, gets into cold junction heat exchange tube bank, the stainless steel heat exchange tube can be fast with heat transfer to in the air of diesel engine radiator and electronic tripe entrance, make the air temperature rise to 60 ~ 80 ℃ in the short time rapidly, with near the ice, the frost of diesel engine radiator and electronic tripe melt. The power consumption is low, the common electric heating effect can be achieved by using a low-power high-pressure air blower through the exhaust heat recovery technology and the air multiplication jet technology, the electric power consumption is only 1/4-1/10 of that of common electric heating, and the economy is good; secondly, high-temperature elements are few, only the heat exchange tube part in the silencer bears high temperature, and the rest part has lower temperature and high reliability; in addition, the safety is good because no large-current equipment is arranged. Taking a 1000kW diesel generator set of a certain brand as an example, a simplified model based on the principle of the ice melting device is established and simulation calculation is carried out. The verification shows that the heat exchange tube is heated by the smoke in the silencer, the cold air at minus 40 ℃ can be raised to 160 ℃, the air flow temperature at the outlet of the ice outlet device can reach 60 ℃ after the cold air is mixed, and the expected ice melting temperature is reached, as shown in figure 2. According to the simulation result, the power consumption is about 250W, the heat absorbed by the hot-end heat exchange tube is 2.4kW, the heat dissipation capacity of the cold-end heat dissipation tube bank is 1.9kW, and the power consumption is about 1/8 of that of the same electric heating.
Preferred example 2:
the present invention will be further described with reference to fig. 1. The utility model provides a diesel engine exhaust waste heat ice-melt device which characterized in that: the diesel engine exhaust muffler comprises a hot end heat exchange tube 1, wherein the hot end heat exchange tube 1 is embedded in the diesel engine exhaust muffler, and the hot end heat exchange tube 1 can adopt stainless steel tubes with various structures, including but not limited to a light tube, a finned tube, a spiral tube and a corrugated tube. The hot end heat exchange tube 1 is connected with the silencer by welding or threads, and the enough strength and sealing are required to be ensured. The heat in the high-temperature exhaust in the silencer continuously heats the air in the pipe through the wall surface of the heat-end heat exchange pipe 1 with good heat conduction. The inlet end of the hot end heat exchange tube 1 is arranged outside the shell of the muffler, the outlet end of the hot end heat exchange tube is inserted into the jet flow section of the mixing tube 2, and an annular nozzle is formed between the outer wall of the hot end heat exchange tube 1 and the inner wall of the mixing tube 2 or between the outer wall and the inner wall of the mixing tube;
the mixing pipe 2 consists of an inlet section, a jet flow section and an outlet section, the inlet section is connected with the end of the air blower 4, the jet flow section is arranged in the middle, the front part of the jet flow section is reduced, the rear part of the jet flow section is gradually expanded, the diameter of the throat part and the curved surface molded line are designed according to the mixing ratio, and the throat part and the curved surface molded line are coaxial with the outlet of the inserted hot end heat exchange pipe 1. The outlet end section is connected with the inlet of the cold end radiating tube row.
The cold-end heat dissipation tube bank 3 is composed of an inlet tube box, a tube bank, an outlet tube box and a side plate. The inlet of the inlet channel box is connected with the mixing pipe 2, the outlet of the inlet channel box is connected with the pipe row, and the inlet hot air is divided into the heat exchange pipes of the pipe row. The tube bank is a main part for heat exchange and is formed by arranging one or more rows of stainless steel heat exchange tubes, and the tubes can be arranged at fixed intervals or variable intervals. The outlet header is a collection area for the air flow at the discharge port of the heat exchange tube, where the low temperature air is collected and discharged to the atmosphere from the outlet of the outlet header. The side plate, the inlet pipe box and the outlet pipe box form a shell with the periphery closed, and the shell is used for supporting the pipe row and connecting the diesel engine radiator.
The blower 4 is a direct current or alternating current high-voltage blower, preferably a direct current brushless high-speed blower, so as to be beneficial to compact installation of the generator set and operation under the condition of no commercial power supply.
One skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be implemented with the same functionality in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like, all by logically programming the steps of the method. Therefore, the system and the devices, modules and units thereof provided by the present invention can be regarded as a hardware component, and the devices, modules and units included therein for implementing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. A deicing device using exhaust waste heat of a diesel engine is characterized by comprising:
the heat exchanger comprises a hot end heat exchange tube (1), a mixing tube (2), a cold end heat dissipation tube bank (3) and a blower (4);
the mixing tube (2) comprises: an inlet section, a jet section, and an outlet section;
one end of the hot end heat exchange tube (1) is inserted into the jet flow section of the mixing tube (2), and one end of the cold end heat dissipation tube bank (3) is connected with the outlet section of the mixing tube (2);
the inlet section of the mixing pipe (2) is connected with a blower (4).
2. The deicing device using the exhaust waste heat of the diesel engine according to claim 1, wherein the hot-end heat exchange tube (1) is arranged in the exhaust muffler of the diesel engine, and the inlet end of the hot-end heat exchange tube (1) is arranged outside the shell of the exhaust muffler of the diesel engine.
3. The deicing device using exhaust waste heat of a diesel engine according to claim 2, wherein said hot-end heat exchange pipe (1) comprises: light pipe, finned tube, spiral tube, corrugated tube;
the hot end heat exchange tube (1) is connected with the exhaust muffler of the diesel engine by welding or threads.
4. The deicing device using the waste heat of exhaust gases of diesel engines according to claim 3, characterized in that said mixing duct (2) comprises: an inlet section, a jet section, and an outlet section;
the outlet end of the hot end heat exchange tube (1) is inserted into the jet flow section of the mixing tube (2), and an annular nozzle is formed between the outer wall of the hot end heat exchange tube (1) and the inner wall of the mixing tube (2) or between the outer wall and the inner wall of the mixing tube;
the inlet section of the mixing pipe (2) is connected with the blower (4), the middle is a jet flow section, the front part of the jet flow section is reduced, the rear part of the jet flow section is gradually expanded, the diameter of the throat part and a curved surface molded line are designed according to the mixing ratio, and the throat part and the curved surface molded line are coaxial with the outlet of the inserted hot end heat exchange pipe (1);
the outlet section of the mixing pipe (2) is connected with the inlet of the cold end radiating pipe row.
5. The deicing device using the exhaust heat of the diesel engine as set forth in claim 4, wherein said cold-end heat dissipation tube bank (3) comprises: the device comprises an inlet pipe box, a pipe row, an outlet pipe box and a side plate;
the inlet of the inlet channel box is connected with the mixing pipe (2), and the outlet of the inlet channel box is connected with the pipe row;
the tube bank is a main part for heat exchange and is formed by arranging one or more rows of stainless steel heat exchange tubes, and the tubes are arranged at fixed intervals or variable intervals;
the side plate, the inlet pipe box and the outlet pipe box form a shell with the periphery closed, and the side plate supports the pipe row and is connected with a diesel engine radiator.
6. The deicing device using the waste heat of exhaust gas from diesel engines as claimed in claim 5, wherein said blower (4) is a DC or AC high-voltage blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020184590.9U CN212003319U (en) | 2020-02-19 | 2020-02-19 | Deicing device using exhaust waste heat of diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020184590.9U CN212003319U (en) | 2020-02-19 | 2020-02-19 | Deicing device using exhaust waste heat of diesel engine |
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| CN212003319U true CN212003319U (en) | 2020-11-24 |
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| CN202020184590.9U Active CN212003319U (en) | 2020-02-19 | 2020-02-19 | Deicing device using exhaust waste heat of diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271164A (en) * | 2020-02-19 | 2020-06-12 | 中国船舶重工集团公司第七一一研究所 | Deicing device using exhaust waste heat of diesel engine |
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2020
- 2020-02-19 CN CN202020184590.9U patent/CN212003319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271164A (en) * | 2020-02-19 | 2020-06-12 | 中国船舶重工集团公司第七一一研究所 | Deicing device using exhaust waste heat of diesel engine |
| CN111271164B (en) * | 2020-02-19 | 2024-03-05 | 中国船舶集团有限公司第七一一研究所 | Deicing device utilizing exhaust waste heat of diesel engine |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |