CN218093196U - Diesel engine tail gas waste heat recovery utilizes system and commercial car - Google Patents
Diesel engine tail gas waste heat recovery utilizes system and commercial car Download PDFInfo
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- CN218093196U CN218093196U CN202221914155.2U CN202221914155U CN218093196U CN 218093196 U CN218093196 U CN 218093196U CN 202221914155 U CN202221914155 U CN 202221914155U CN 218093196 U CN218093196 U CN 218093196U
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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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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The application discloses diesel engine tail gas waste heat recovery utilizes system and commercial car, diesel engine tail gas waste heat recovery utilizes system and includes: a diesel tank for storing diesel; the tail gas silencer is used for receiving tail gas sprayed out when the diesel engine works; the first heat exchanger is arranged inside the tail gas silencer; the second heat exchanger is arranged in the diesel oil tank, an inlet of the second heat exchanger is connected with an outlet of the first heat exchanger through a first liquid pipeline, and an outlet of the second heat exchanger is connected with an inlet of the first heat exchanger through a second liquid pipeline. The diesel engine tail gas waste heat recycling system utilizes tail gas to transfer heat to diesel oil, is favorable for saving vehicle cost, has higher heat exchange and heat transfer efficiency, does not additionally consume the power of the diesel oil, does not increase oil consumption, and is energy-saving and emission-reducing.
Description
Technical Field
The application relates to the technical field of diesel engine tail gas treatment, in particular to a diesel engine tail gas waste heat recycling system.
Background
The diesel oil for the vehicle is divided into five grades according to the condensation point, the lower the grade is, the lower the condensation point is, the lower the price of the diesel oil is, the stock is less on the market, and the diesel oil is not beneficial to vehicle operation in cold regions. The conventional solution is that two oil tanks (or one oil tank is divided into two independent cavities) are arranged on a vehicle and respectively filled with high-grade and low-grade diesel oil, the low-grade diesel oil is utilized to start the diesel engine under a cold machine, then the high-grade diesel oil is heated, and the high-grade diesel oil is switched to be used after the preset temperature is reached. At present, a mainstream diesel oil heating device converts electric energy into heat energy by using a resistance wire to heat diesel oil, or directly uses diesel engine cooling liquid to convey the diesel oil to an oil tank to heat the diesel oil in a heat exchange mode.
However, the diesel electric heating system increases the load of the power supply system of the whole vehicle, and particularly reduces the effective capacity of a storage battery at low temperature, so that feeding is easy to cause, and a large generator needs to be replaced. The cost is increased more, and the oil consumption is increased by increasing the output current of the generator, and the economy is poor. In addition, general diesel engine arranges in whole car front end, and the oil tank is in whole car middle part, and the diesel engine is far away from the oil tank, and the coolant liquid loses partly heat in long distance transport process under the low temperature environment, carries oil tank department back temperature to reduce, has reduced the heating efficiency to diesel oil, and the heat engine time of diesel engine body is long under the low temperature, consequently, utilizes the coolant liquid of diesel engine to heat diesel oil, needs longer heat time just can satisfy the demand.
SUMMERY OF THE UTILITY MODEL
The application provides a diesel engine tail gas waste heat recovery utilizes system and commercial car to solve at least one technical problem among the above-mentioned technical problem.
The technical scheme adopted by the application is as follows:
a diesel engine tail gas waste heat recovery utilizes system includes: a diesel tank for storing diesel; the tail gas silencer is used for receiving tail gas sprayed out when the diesel engine works; the first heat exchanger is arranged inside the tail gas silencer; the second heat exchanger is arranged in the diesel oil tank, an inlet of the second heat exchanger is connected with an outlet of the first heat exchanger through a first liquid pipeline, and an outlet of the second heat exchanger is connected with an inlet of the first heat exchanger through a second liquid pipeline.
The diesel engine tail gas waste heat recovery utilizes system in this application still has following additional technical characterstic:
the diesel engine tail gas waste heat recycling system further comprises a liquid on-off control valve arranged on the first liquid pipeline, and the liquid on-off control valve is used for conducting or cutting off a fluid path between an outlet of the first heat exchanger and an inlet of the second heat exchanger.
The liquid on-off control valve is set as an electromagnetic valve.
The diesel engine tail gas waste heat recycling system further comprises a temperature measuring device, the temperature measuring device is arranged on the diesel oil tank, and the temperature measuring device is used for measuring the temperature of diesel oil in the diesel oil tank.
The temperature measuring device is a temperature sensor.
The first heat exchanger is a shell-and-tube heat exchanger.
The first heat exchanger comprises a plurality of first heat exchange tubes arranged in parallel.
The second heat exchanger is a shell-and-tube heat exchanger.
The second heat exchanger comprises a plurality of second heat exchange tubes arranged in parallel.
The application provides a commercial car, includes as above diesel engine tail gas waste heat recovery utilizes system.
Due to the adoption of the technical scheme, the technical effects obtained by the application are as follows:
among the technical scheme of this application, through set up first heat exchanger in the tail gas silencer, set up the second heat exchanger in diesel oil tank, first heat exchanger, the second heat exchanger, first liquid pipeline, second liquid pipeline forms the circulation heat transfer flow path, the diesel engine emits into the inside high temperature tail gas of tail gas silencer and the liquid heat transfer in the first heat exchanger, liquid in the first heat exchanger gets into the second heat exchanger through first liquid pipeline after being heated by tail gas, liquid in the second heat exchanger with the diesel oil heat transfer in the diesel oil tank, realize the heating of diesel oil, last liquid flows back to first heat exchanger through second liquid pipeline. Compare with the mode of utilizing electric heating system to heat diesel oil, the technical scheme of this application has carried out make full use of to diesel engine high temperature tail gas, need not to additionally be equipped with electric heating system for the diesel engine again, has practiced thrift the cost of using the car, also energy-concerving and environment-protective more. In addition, compare with the mode that utilizes diesel engine coolant liquid to carry the oil tank to heat high-grade diesel oil, the technical scheme of this application, the high just possesses heat output of tail gas temperature after the diesel engine starts, and the first heat exchanger of participating in tail gas heat exchange is little with the second heat exchanger distance that is located the diesel oil tank, the heat transfer, heat transfer efficiency is higher, therefore, this system has the fast advantage of heating response, can switch into to using high-grade diesel oil from using low-grade diesel oil more fast during the car, and, this system utilizes the heat of tail gas, do not additionally consume diesel engine power, do not increase the oil consumption, energy saving and emission reduction more.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a diesel engine exhaust waste heat recycling system provided by the present application.
Reference numerals:
the device comprises a diesel oil tank 1, a tail gas silencer 2, a first heat exchanger 3, a first heat exchange tube 31, a second heat exchanger 4, a second heat exchange tube 41, a first liquid pipeline 5, a second liquid pipeline 6, a liquid on-off control valve 7 and a temperature measuring device 8.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the present application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present application.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the embodiment of the application, a diesel engine exhaust gas waste heat recycling system and a commercial vehicle are provided, and for convenience of explanation and understanding, the following contents provided by the application are all explained on the basis of the structure of a product shown in the drawing. Of course, it is understood by those skilled in the art that the above-described structure is only used as a specific example and illustrative illustration, and does not constitute a specific limitation to the technical solution provided by the present application.
As shown in fig. 1, a system for recycling waste heat of diesel engine exhaust comprises a diesel oil tank 1, an exhaust muffler 2, a first heat exchanger 3 and a second heat exchanger 4. The diesel oil tank 1 is used for storing diesel oil, the tail gas silencer 2 is used for receiving tail gas sprayed by a diesel engine during working, the first heat exchanger 3 is arranged inside the tail gas silencer 2, the second heat exchanger 4 is arranged inside the diesel oil tank 1, an inlet of the second heat exchanger 4 is connected with an outlet of the first heat exchanger 3 through a first liquid pipeline 5, and an outlet of the second heat exchanger 4 is connected with an inlet of the first heat exchanger 3 through a second liquid pipeline 6.
Among the technical scheme of this application, through set up first heat exchanger 3 in tail gas silencer 2, set up second heat exchanger 4 in diesel oil tank 1, first heat exchanger 3, second heat exchanger 4, first liquid pipeline 5, second liquid pipeline 6 forms the circulation heat transfer flow path, the diesel engine emits into the inside high temperature tail gas of tail gas silencer 2 and the liquid heat transfer in the first heat exchanger 3, liquid in the first heat exchanger 3 gets into second heat exchanger 4 through first liquid pipeline 5 after being heated by tail gas, liquid in second heat exchanger 4 with the diesel oil heat transfer in the diesel oil tank 1, realize the heating of diesel oil, last liquid flows back to first heat exchanger 3 through second liquid pipeline 6. Compare with the mode of utilizing electric heating system to heat diesel oil, the technical scheme of this application has carried out make full use of to diesel engine high temperature tail gas, need not to additionally be equipped with electric heating system for the diesel engine again, has practiced thrift the cost of using the car, also energy-concerving and environment-protective more. In addition, compare with the mode that utilizes diesel engine coolant liquid to carry the oil tank to heat high-grade diesel oil, the technical scheme of this application, the high just possesses heat output of tail gas temperature after the diesel engine starts, and the first heat exchanger 3 of participating in tail gas heat exchange is little with the second heat exchanger 4 distance that is located diesel oil tank 1, the heat transfer, heat transfer efficiency is higher, therefore, this system has the fast advantage of heating response, can switch into to using high-grade diesel oil from using low-grade diesel oil more fast during the car, moreover, this system utilizes the heat of tail gas, do not additionally consume diesel engine power, do not increase the oil consumption, energy saving and emission reduction more.
In specific operation, because of the existence of thermal convection, after the tail gas heats the liquid in the first heat exchanger 3, the liquid in the first heat exchanger 3 automatically flows towards the second heat exchanger 4 through the first liquid pipeline 5. Of course, the liquid may be driven to flow in the circulating heat exchange flow path formed by the first heat exchanger 3, the second heat exchanger 4, the first liquid pipeline 5, and the second liquid pipeline 6 in other manners, for example, a water pump may be provided on the first liquid pipeline 5 to promote the circulation of the heat exchange liquid.
As a preferred embodiment of the present application, as shown in fig. 1, the system for recycling exhaust heat of a diesel engine further includes a liquid on-off control valve 7 disposed on the first liquid pipeline 5, where the liquid on-off control valve 7 is configured to conduct or block a fluid path between an outlet of the first heat exchanger 3 and an inlet of the second heat exchanger 4.
When the diesel engine is specifically implemented, when high-grade diesel oil placed in the diesel oil tank 1 needs to be heated, for example, when a vehicle is started, the liquid on-off control valve 7 can be communicated with a fluid path between the outlet of the first heat exchanger 3 and the inlet of the second heat exchanger 4, and after the diesel engine is started, the system enters a state of heat exchange between tail gas and diesel oil; when high-grade diesel oil placed in the diesel oil tank 1 is not required to be heated, for example, when the temperature of the high-grade diesel oil in the diesel oil tank meets the use requirement, the liquid on-off control valve 7 can be used for cutting off a fluid path between the outlet of the first heat exchanger 3 and the inlet of the second heat exchanger 4, and the system stops the heat exchange state of tail gas and diesel oil.
It should be noted that the present application does not specifically limit the structural form of the liquid on-off control valve 7, and for example, the liquid on-off control valve 7 may be a stop valve, an on-off valve, or the like. As a preferred embodiment, the liquid on-off control valve 7 may be an electromagnetic valve, and in specific implementation, the electromagnetic valve may be electrically connected to a vehicle control unit, and the opening and closing of the electromagnetic valve may be automatically controlled by the control unit.
As a preferred embodiment of the present application, as shown in fig. 1, the diesel engine tail gas waste heat recycling system further includes a temperature measuring device 8, the temperature measuring device 8 is disposed in the diesel oil tank 1, and the temperature measuring device 8 is used for measuring the temperature of diesel oil inside the diesel oil tank 1.
As can be understood by those skilled in the art, the temperature measuring device 8 can be used for monitoring the temperature of the diesel oil in the diesel oil tank 1 in real time, during specific implementation, the temperature measuring device 8 can be electrically connected with a vehicle control unit, the temperature measuring device 8 transmits detected temperature information to the control unit, and the control unit judges whether to open the electromagnetic valve when the diesel engine works according to the temperature information of the diesel oil. For example, when the vehicle is started in an environment with a high outdoor temperature, when the temperature measuring device 8 detects that the temperature of the high-grade diesel oil in the diesel oil tank 1 meets the starting requirement of the diesel engine, the high-grade diesel oil can be directly used for starting the diesel engine without heating the high-grade diesel oil in advance through tail gas; for another example, when the vehicle is started in an environment with a low outdoor temperature, when the temperature measuring device 8 detects that the temperature of the high-grade diesel oil in the diesel oil tank 1 is low and does not meet the starting requirement of the diesel engine, the diesel engine can be started by using the low-grade diesel oil, and the electromagnetic valve is opened to heat the high-grade diesel oil in the diesel oil tank in advance through tail gas.
It should be noted that, the structural form of the temperature measuring device 8 is not specifically limited in the present application, for example, the temperature measuring device 8 may be a thermometer, a temperature measuring instrument, or the like. As a preferred embodiment, the temperature measuring device 8 may be a temperature sensor, and specifically, the temperature sensor may be fixed on the tank body of the diesel tank 1, and a probe of the temperature sensor extends into the diesel tank 1.
As a preferred embodiment of the present application, the first heat exchanger 3 is configured as a shell-and-tube heat exchanger, and further, as shown in fig. 1, the first heat exchanger 3 includes a plurality of first heat exchange tubes 31 arranged in parallel.
The technical personnel in the field can understand that, this system utilizes the waste heat transfer of tail gas, and tail gas need be discharged to atmospheric environment after aftertreatment purifies, and the liquid in tail gas and the first heat exchanger 3 needs the interval to carry heat and can not the direct contact mix heat transfer, consequently, makes first heat exchange tube 31 be shell and tube heat exchanger, utilizes the shell and tube structure of first heat exchanger 3 to separate tail gas and liquid, can avoid the two to take place direct contact. The first heat exchanger 3 comprises a plurality of first heat exchange tubes 31 which are arranged in parallel, so that the liquid capacity can be enlarged, the heat transfer area can be enlarged, and the heat transfer efficiency can be improved.
As a preferred embodiment of the present application, the second heat exchanger 4 is provided as a shell-and-tube heat exchanger, and further, as shown in fig. 1, the second heat exchanger 4 includes a plurality of second heat exchange tubes 41 arranged in parallel.
It can be understood by those skilled in the art that, in order to prevent the oil product of the diesel oil from being affected, the liquid in the second heat exchanger 4 cannot directly contact with the diesel oil in the diesel oil tank 1 to transfer heat, so that the second heat exchange tube 41 is a tube-shell type heat exchanger, and the liquid and the diesel oil are separated by using the tube-shell structure of the second heat exchanger 4, thereby preventing the two from directly contacting. The second heat exchanger 4 comprises a plurality of first heat exchange tubes 31 arranged in parallel, which is beneficial to enlarging the liquid capacity and the heat transfer area, and improving the heat transfer efficiency.
The application provides a commercial car, includes as above diesel engine tail gas waste heat recovery utilizes system.
It should be noted that, because the commercial vehicle that this application provided includes the diesel engine exhaust waste heat recovery system in any one of the above-mentioned embodiments, embodiment, consequently, the beneficial effect that the diesel engine exhaust waste heat recovery system has all is that the commercial vehicle that this application provided contains, does not describe here in any detail.
Where not mentioned in this application, can be accomplished using or referencing existing technology.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides a diesel engine tail gas waste heat recovery utilizes system which characterized in that includes:
a diesel tank for storing diesel;
the tail gas silencer is used for receiving tail gas sprayed out when the diesel engine works;
the first heat exchanger is arranged inside the tail gas silencer;
the second heat exchanger is arranged in the diesel oil tank, an inlet of the second heat exchanger is connected with an outlet of the first heat exchanger through a first liquid pipeline, and an outlet of the second heat exchanger is connected with an inlet of the first heat exchanger through a second liquid pipeline.
2. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 1,
the system for recycling the waste heat of the tail gas of the diesel engine further comprises a liquid on-off control valve arranged on the first liquid pipeline, and the liquid on-off control valve is used for conducting or cutting off a fluid path between an outlet of the first heat exchanger and an inlet of the second heat exchanger.
3. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 2,
the liquid on-off control valve is set as an electromagnetic valve.
4. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 1,
the diesel engine tail gas waste heat recycling system further comprises a temperature measuring device, the temperature measuring device is arranged on the diesel oil tank, and the temperature measuring device is used for measuring the temperature of diesel oil in the diesel oil tank.
5. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 4,
the temperature measuring device is a temperature sensor.
6. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 1,
the first heat exchanger is a shell-and-tube heat exchanger.
7. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 6,
the first heat exchanger comprises a plurality of first heat exchange tubes arranged in parallel.
8. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 1,
the second heat exchanger is a shell-and-tube heat exchanger.
9. The system for recycling the waste heat of the tail gas of the diesel engine according to claim 8,
the second heat exchanger comprises a plurality of second heat exchange tubes arranged in parallel.
10. A commercial vehicle comprising a diesel exhaust waste heat recovery system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221914155.2U CN218093196U (en) | 2022-07-21 | 2022-07-21 | Diesel engine tail gas waste heat recovery utilizes system and commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221914155.2U CN218093196U (en) | 2022-07-21 | 2022-07-21 | Diesel engine tail gas waste heat recovery utilizes system and commercial car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218093196U true CN218093196U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221914155.2U Active CN218093196U (en) | 2022-07-21 | 2022-07-21 | Diesel engine tail gas waste heat recovery utilizes system and commercial car |
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| CN (1) | CN218093196U (en) |
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2022
- 2022-07-21 CN CN202221914155.2U patent/CN218093196U/en active Active
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