CN116480446B - Diesel engine waste heat utilization device and control method - Google Patents
Diesel engine waste heat utilization device and control method Download PDFInfo
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- CN116480446B CN116480446B CN202310538601.7A CN202310538601A CN116480446B CN 116480446 B CN116480446 B CN 116480446B CN 202310538601 A CN202310538601 A CN 202310538601A CN 116480446 B CN116480446 B CN 116480446B
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- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 180
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides a diesel engine waste heat utilization device, comprising: the system comprises a diesel engine, a first pipeline, a heater, a second pipeline, a smoke exhaust pipe, a water jacket, a temperature control valve, a third pipeline, a fourth pipeline, a temperature control valve, a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline and a water pump. By arranging the smoke exhaust pipe and the water jacket, high-temperature smoke exhaust is generated after the diesel engine is started, so that the temperature of the smoke exhaust pipe is far higher than that of the heater, when water flow flowing out of the diesel engine flows to the water inlet of the diesel engine after being sleeved outside the high-temperature smoke exhaust pipe, the temperature of the water flow is rapidly increased, the time for the water flow to reach the required loading temperature of the diesel engine is shortened, namely, the heating time is shortened, fuel is saved, and the fuel thermal efficiency of the diesel engine can be improved.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to a diesel engine waste heat utilization device and a control method.
Background
In the starting process of the medium-speed diesel engine, the cooling water temperature of the medium-speed diesel engine is required to be started at 20 ℃ and the loading operation is required to be performed at 40 ℃ according to the characteristic requirements and the influence of the environmental temperature. At present, a high-temperature water preheater is adopted to heat high-temperature water, specifically, the high-temperature water heater is firstly started before the diesel engine is started, the high-temperature water flows out from the diesel engine, flows into the diesel engine after passing through the high-temperature water heater, when the temperature of the high-temperature water reaches 20 ℃, the diesel engine is started, the high-temperature water heater is closed, the rotating speed of the diesel engine is increased to the rated rotating speed, and the loading operation is started when the temperature of the high-temperature water of the diesel engine reaches the regulated temperature of 40 ℃ under no load, wherein the process is commonly called as 'warm-up'.
In the prior art, the heating time is too long, the diesel engine cannot reach the loading application state in a very short time from receiving the starting instruction, the thermal efficiency of the conventional diesel engine is basically about 40%, and the improvement of the thermal efficiency of the diesel engine becomes the key point of research.
In view of the above, the present invention provides a diesel engine waste heat utilization device and a control method, which utilize exhaust waste heat of a diesel engine to improve fuel oil thermal efficiency of the diesel engine, thereby shortening the "warming" time.
Disclosure of Invention
According to the technical problem that the heating time is too long, the waste heat utilization device and the control method of the diesel engine are provided. The invention mainly utilizes the exhaust waste heat of the diesel engine to heat the water flow flowing out of the diesel engine, so that the water flow can reach the specified temperature to flow to the diesel engine, and the diesel engine can also reach the loading running state quickly.
The invention adopts the following technical means:
in one aspect, the present invention provides a diesel engine waste heat utilization device, comprising:
a diesel engine;
one end of the first pipeline is communicated with a water outlet of the diesel engine, and the other end of the first pipeline is communicated with a heater;
one end of the second pipeline is communicated with the heater, and the other end of the second pipeline is communicated with a water inlet of the diesel engine;
one end of the smoke exhaust pipe is communicated with the exhaust port of the diesel engine, a water jacket is sleeved outside the smoke exhaust pipe, and the water jacket comprises a water inlet end and a water outlet end;
the temperature control valve comprises a first port, a second port and a third port;
one end of the third pipeline is communicated with the first pipeline between the diesel engine and the heater, and the other end of the third pipeline is communicated with the first port;
one end of the fourth pipeline is communicated with the second port, and the other end of the fourth pipeline is communicated with the water inlet end;
a temperature regulating valve comprising a fourth port and a fifth port;
one end of the fifth pipeline is communicated with the third port, and the other end of the fifth pipeline is communicated with the fourth port;
a sixth pipe, one end of which is communicated with the drainage end, and the other end of which is communicated with the fifth pipe between the third port and the fourth port;
one end of the seventh pipeline is communicated with the fifth port, and the other end of the seventh pipeline is communicated with a water pump;
and one end of the eighth pipeline is communicated with the water pump, and the other end of the eighth pipeline is communicated with the second pipeline between the heater and the water inlet of the diesel engine.
Further, the fourth pipeline is provided with a first stop valve, and the sixth pipeline is provided with a second stop valve;
and a water drain valve is arranged between the second stop valve and the water drain end of the sixth pipeline.
Further, the first pipe is provided with a third stop valve between the third pipe and the heater;
the second pipeline is provided with a fourth stop valve between the eighth pipeline and the heater.
Further, the temperature regulating valve further comprises a sixth port;
a ninth pipeline, one end of which is communicated with the sixth port, and the other end of which is communicated with the cooler;
and one end of the tenth pipeline is communicated with the first pipeline between the third pipeline and the third stop valve, and the other end of the tenth pipeline is communicated with the cooler.
On the other hand, the invention also provides a diesel engine waste heat utilization control method, which is applied to the diesel engine waste heat utilization device of any one of the above, and comprises the following steps:
opening the first port, the second port and the heater, closing the third port and the fourth port, draining water from a water outlet of the diesel engine, and enabling partial water flow to enter the water jacket through the first pipeline, the third pipeline, the temperature control valve and the fourth pipeline in sequence; another part of water flow enters the heater along the first pipeline, and the heater heats the water flow and conveys the water flow to a water inlet of the diesel engine along the second pipeline;
when the temperature of the water flow conveyed to the water inlet of the diesel engine along the second pipeline reaches a starting temperature, the diesel engine is started, the heater is closed, and the smoke exhaust pipe is heated;
the fourth port and the fifth port are opened, water flow sequentially passes through the first pipeline, the third pipeline and the fourth pipeline and enters the water jacket, the smoke exhaust pipe heats the water flow in the water jacket, and the heated water flow sequentially passes through the sixth pipeline, the fifth pipeline, the temperature regulating valve, the seventh pipeline, the water pump, the eighth pipeline and the second pipeline and is transmitted to a water inlet of the diesel engine;
the diesel engine is operated loaded when the temperature of the water flow delivered along the second conduit to the water inlet of the diesel engine reaches a loading temperature.
Further, the fourth pipeline is provided with a first stop valve, and the sixth pipeline is provided with a second stop valve;
the sixth pipeline is provided with a water drain valve between the second stop valve and the water drain end;
and after the diesel engine is loaded and operated, the second port, the first stop valve and the second stop valve are closed, and the water drain valve is opened.
Further, the temperature control valve comprises a first preset temperature and a second preset temperature, wherein the first preset temperature is lower than the loading temperature, the difference value between the first preset temperature and the loading temperature is less than or equal to 5, and the second preset temperature is equal to the loading temperature;
when the water flow temperature passing through the temperature control valve reaches the first preset temperature, the temperature control valve controls the second port to start to be closed;
when the water flow temperature passing through the temperature control valve reaches the second preset temperature, the temperature control valve controls the second port to be completely closed.
Compared with the prior art, the invention has the following advantages:
the invention provides a diesel engine waste heat utilization device which comprises a diesel engine, wherein one end of a first pipeline is communicated with a water outlet of the diesel engine, and the other end of the first pipeline is communicated with a heater; one end of the second pipeline is communicated with the heater, and the other end of the second pipeline is communicated with a water inlet of the diesel engine; one end of the smoke exhaust pipe is communicated with an exhaust port of the diesel engine, a water jacket is sleeved outside the smoke exhaust pipe, and the water jacket comprises a water inlet end and a water exhaust end; the temperature control valve comprises a first port, a second port and a third port; one end of the third pipeline is communicated with the first pipeline between the diesel engine and the heater, and the other end of the third pipeline is communicated with the first port; one end of the fourth pipeline is communicated with the second port, and the other end of the fourth pipeline is communicated with the water inlet end; the temperature regulating valve comprises a fourth port and a fifth port; one end of the fifth pipeline is communicated with the third port, and the other end of the fifth pipeline is communicated with the fourth port; one end of the sixth pipeline is communicated with the drainage end, and the other end of the sixth pipeline is communicated with the fifth pipeline between the third port and the fourth port; one end of the seventh pipeline is communicated with the fifth port, and the other end of the seventh pipeline is communicated with the water pump; one end of the eighth pipeline is communicated with the water pump, and the other end of the eighth pipeline is communicated with the second pipeline between the heater and the water inlet of the diesel engine. By arranging the smoke exhaust pipe and the water jacket, high-temperature smoke exhaust is generated after the diesel engine is started, so that the temperature of the smoke exhaust pipe is far higher than that of the heater, when water flow flowing out of the diesel engine flows to the water inlet of the diesel engine after being sleeved outside the high-temperature smoke exhaust pipe, the temperature of the water flow is rapidly increased, the time for the water flow to reach the required loading temperature of the diesel engine is shortened, namely, the heating time is shortened, fuel is saved, and the fuel thermal efficiency of the diesel engine can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a diesel engine waste heat utilization device provided by the invention.
Fig. 2 is a schematic view of a smoke exhaust pipe and a water jacket according to the present invention.
FIG. 3 is a flow chart of a temperature controlled valve regulating a second port.
In the figure: 1. a diesel engine; 2. a first pipe; 3. a heater; 4. a second pipe; 5. a smoke exhaust pipe; 6. a water jacket; 7. a water inlet end; 8. a drainage end; 9. a temperature control valve; a. a first port; b. a second port; c. a third port; 10. a third conduit; 11. a fourth conduit; 12. a temperature regulating valve; w, a fourth port; e. a fifth port; n, sixth port; 13. a fifth pipe; 14. a sixth conduit; 15. a seventh pipe; 16. a water pump; 17. an eighth conduit; 18. a first stop valve; 19. a second shut-off valve; 20. a water drain valve; 21. a third stop valve; 22. a fourth shut-off valve; 23. a ninth conduit; 24. a cooler; 25. and a tenth pipeline.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a diesel engine waste heat utilization device provided by the present invention, and fig. 2 is a schematic structural diagram of a smoke exhaust pipe and a water jacket of the present invention, to illustrate a specific embodiment of a diesel engine waste heat utilization device 000 provided by the present invention, including:
a diesel engine 1;
one end of the first pipeline 2 is communicated with a water outlet of the diesel engine 1, and the other end of the first pipeline is communicated with a heater 3;
one end of the second pipeline 4 is communicated with the heater 3, and the other end of the second pipeline is communicated with a water inlet of the diesel engine 1;
one end of the smoke exhaust pipe 5 is communicated with the exhaust port of the diesel engine 1, the smoke exhaust pipe 5 is sleeved with a water jacket 6, and the water jacket 6 comprises a water inlet end 7 and a water outlet end 8;
a thermo valve 9 comprising a first port a, a second port b and a third port c;
a third pipe 10, one end of which is communicated with the first pipe 2 between the diesel engine 1 and the heater 3, and the other end of which is communicated with the first port a;
a fourth pipeline 11, one end of which is communicated with the second port b and the other end of which is communicated with the water inlet end 7;
a temperature control valve 12 comprising a fourth port w and a fifth port e;
a fifth pipeline 13, one end of which is communicated with the third port c and the other end of which is communicated with the fourth port w;
a sixth pipe 14, one end of which is communicated with the water discharge end 8, and the other end of which is communicated with a fifth pipe 13 between the third port c and the fourth port w;
a seventh pipe 15, one end of which is communicated with the fifth port e, and the other end of which is communicated with a water pump 16;
and an eighth pipeline 17, one end of which is communicated with the water pump 16, and the other end of which is communicated with the second pipeline 4 between the heater 3 and the water inlet of the diesel engine 1.
In the present embodiment, only one end of the smoke exhaust pipe 5 is connected to the exhaust port of the diesel engine 1, but the present invention is not limited to this, and one end of the smoke exhaust pipe 5 may be connected to a smoke exhaust manifold behind the supercharger of the diesel engine 1.
It can be understood that when the diesel engine waste heat utilization device 000 provided in this embodiment works, the first port a, the second port b and the heater 3 are opened first, the third port c and the fourth port w are closed, the water outlet of the diesel engine 1 is drained, and part of water flow sequentially passes through the first pipeline 2, the third pipeline 10, the temperature control valve 9 and the fourth pipeline 11 to enter the water jacket 6; the other part of water flow enters the heater 3 along the first pipeline 2, and the heater 3 heats the water flow and conveys the water flow to the water inlet of the diesel engine 1 along the second pipeline 4; when the temperature of the water flow conveyed to the water inlet of the diesel engine 1 along the second pipeline 4 reaches the starting temperature, the diesel engine 1 is started, the heater 3 is closed, and the smoke exhaust pipe 5 is heated; taking a medium-speed diesel engine as an example, in general, the loading temperature of water flow of the medium-speed diesel engine is 160 ℃, the exhaust gas temperature of the medium-speed diesel engine in an initial idle state is 160 ℃, the exhaust gas temperature is far higher than the heating temperature of the heater 3, after the medium-speed diesel engine is started, the rotation speed of the medium-speed diesel engine is continuously increased, and the exhaust gas temperature of the medium-speed diesel engine is continuously increased along with the increase of the rotation speed of the medium-speed diesel engine, so that the water flow can be quickly reached to the loading temperature by utilizing the exhaust gas waste heat to heat the water flow, thereby enabling the medium-speed diesel engine to quickly meet the time of the loading running state, and heating the running water by utilizing the exhaust gas waste heat comprises: the fourth port w and the fifth port e are opened, water flows sequentially pass through the first pipeline 2, the third pipeline 10 and the fourth pipeline 11 and enter the water jacket 6, the smoke exhaust pipe 5 rapidly heats the water flow in the water jacket 6, and the heated water flow sequentially passes through the sixth pipeline 14, the fifth pipeline 13, the temperature regulating valve 12, the seventh pipeline 15, the water pump 16, the eighth pipeline 17 and the second pipeline 4 and is transmitted to the water inlet of the diesel engine 1; when the temperature of the water flow fed along the second pipe 4 to the water inlet of the diesel engine 1 reaches the charging temperature, the diesel engine 1 is charged to operate, wherein the water pump 16 is a high temperature water pump.
In some alternative embodiments, with continued reference to fig. 1 and 2, the fourth conduit 11 is provided with a first shut-off valve 18 and the sixth conduit 14 is provided with a second shut-off valve 19; the sixth conduit 14 is provided with a drain valve 20 between the second shut-off valve 19 and the drain end 8.
It should be understood that the first stop valve 18 and the second stop valve 19 are both electromagnetic stop valves, the water drain valve 20 is an electromagnetic water drain valve, and of course, not limited thereto, when the diesel engine 1 starts to operate under loading, the water flowing out of the diesel engine 1 does not need to be continuously heated, the second port b, the first stop valve 18 and the second stop valve 19 are closed, the water flowing out of the diesel engine 1 directly flows along the first pipeline 2, the third pipeline 10, the fifth pipeline 13, the temperature regulating valve 12, the seventh pipeline 15, the water pump 16, the eighth pipeline 17 and the second pipeline 4 to the water inlet of the diesel engine 1, and in order to avoid that the pressure in the pipes increases and the pipes burst due to the continuous heating of the residual water in the fourth pipeline 11, the water jacket 6 and the sixth pipeline 14 by the smoke exhaust pipe 5, the water drain valve 20 needs to be opened to drain the residual water in the fourth pipeline 11, the water jacket 6 and the sixth pipeline 14.
In some alternative embodiments, with continued reference to fig. 1 and 2, the first conduit 2 is provided with a third stop valve 21 between the third conduit 10 and the heater 3; the second conduit 4 is provided with a fourth shut-off valve 22 between the eighth conduit 17 and the heater 3.
The thermostat valve 12 further includes a sixth port n;
a ninth pipe 23 having one end connected to the sixth port n and the other end connected to the cooler 24;
a tenth pipe 25 having one end communicating with the first pipe 2 between the third pipe 10 and the third stop valve 21 and the other end communicating with the cooler 24.
It will be appreciated that the provision of the third and fourth shut-off valves 21 and 22 allows for better control of the conduit and thus the water flow, while the cooler 24 is a prior art in the construction of the diesel engine 1, which is not described in detail in this embodiment.
Based on the same inventive concept, with continued reference to fig. 1 and 2, the present invention provides a diesel engine waste heat utilization control method, which is applied to the diesel engine waste heat utilization device 000 provided in any of the foregoing embodiments, including:
opening a first port a, a second port b and a heater 3, closing a third port c and a fourth port w, draining water from a water outlet of the diesel engine 1, and enabling partial water flow to enter the water jacket 6 through a first pipeline 2, a third pipeline 10, a temperature control valve 9 and a fourth pipeline 11 in sequence; the other part of water flow enters the heater 3 along the first pipeline 2, and the heater 3 heats the water flow and conveys the water flow to the water inlet of the diesel engine 1 along the second pipeline 4;
when the temperature of the water flow conveyed to the water inlet of the diesel engine 1 along the second pipeline 4 reaches the starting temperature, the diesel engine 1 is started, the heater 3 is closed, and the smoke exhaust pipe 5 is heated;
the fourth port w and the fifth port e are opened, water flows sequentially pass through the first pipeline 2, the third pipeline 10 and the fourth pipeline 11 and enter the water jacket 6, the smoke exhaust pipe 5 heats the water flow in the water jacket 6, and the heated water flow is sequentially transmitted to the water inlet of the diesel engine 1 through the sixth pipeline 14, the fifth pipeline 13, the temperature regulating valve 12, the seventh pipeline 15, the water pump 16, the eighth pipeline 17 and the second pipeline 4;
when the temperature of the water flow fed along the second conduit 4 to the water inlet of the diesel engine 1 reaches the charging temperature, the diesel engine 1 is charged to run.
In some alternative embodiments, with continued reference to fig. 1 and 2, the fourth conduit 11 is provided with a first shut-off valve 18 and the sixth conduit 14 is provided with a second shut-off valve 19;
the sixth pipeline 14 is provided with a water drain valve 20 between the second stop valve 19 and the water drain end 8;
after the diesel engine 1 is loaded and operated, the second port b, the first stop valve 18 and the second stop valve 19 are closed, and the water drain valve 20 is opened.
In some alternative embodiments, referring to fig. 3, fig. 3 is a flowchart of a temperature control valve regulating a second port, where the temperature control valve 9 includes a first preset temperature and a second preset temperature, the first preset temperature is lower than the loading temperature, a difference between the first preset temperature and the loading temperature is less than or equal to 5, and the second preset temperature is equal to the loading temperature;
when the water flow temperature passing through the temperature control valve 9 reaches a first preset temperature, the temperature control valve 9 controls the second port b to start to be closed;
when the water flow temperature passing through the temperature control valve 9 reaches the second preset temperature, the temperature control valve 9 controls the second port b to be completely closed.
It can be appreciated that the first preset temperature is the temperature T of initial closing of the thermostatic valve 0 The second preset temperature is the temperature T of the complete closing of the temperature control valve C In this embodiment, the structure of the temperature control valve 9 is not improved, and the temperature control valve 9 in the prior art is adopted, and the first preset temperature and the second preset temperature are set to be similar to the temperature control valve 9, so as to ensure the rapidity of the heating temperature and the closing accuracy of the second port b.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A diesel engine waste heat utilization device, characterized by comprising:
a diesel engine;
one end of the first pipeline is communicated with a water outlet of the diesel engine, and the other end of the first pipeline is communicated with a heater;
one end of the second pipeline is communicated with the heater, and the other end of the second pipeline is communicated with a water inlet of the diesel engine;
one end of the smoke exhaust pipe is communicated with the exhaust port of the diesel engine, a water jacket is sleeved outside the smoke exhaust pipe, and the water jacket comprises a water inlet end and a water outlet end;
the temperature control valve comprises a first port, a second port and a third port;
one end of the third pipeline is communicated with the first pipeline between the diesel engine and the heater, and the other end of the third pipeline is communicated with the first port;
one end of the fourth pipeline is communicated with the second port, the other end of the fourth pipeline is communicated with the water inlet end, and the fourth pipeline is provided with a first stop valve;
a temperature regulating valve comprising a fourth port and a fifth port;
one end of the fifth pipeline is communicated with the third port, and the other end of the fifth pipeline is communicated with the fourth port;
one end of the sixth pipeline is communicated with the drainage end, the other end of the sixth pipeline is communicated with the fifth pipeline between the third port and the fourth port, the sixth pipeline is provided with a second stop valve, and a water drain valve is arranged between the second stop valve and the drainage end;
one end of the seventh pipeline is communicated with the fifth port, and the other end of the seventh pipeline is communicated with a water pump;
and one end of the eighth pipeline is communicated with the water pump, and the other end of the eighth pipeline is communicated with the second pipeline between the heater and the water inlet of the diesel engine.
2. The diesel engine residual heat utilization device according to claim 1, wherein the first pipe is provided with a third stop valve between the third pipe and the heater;
the second pipeline is provided with a fourth stop valve between the eighth pipeline and the heater.
3. The diesel engine residual heat utilizing device according to claim 2, wherein the temperature regulating valve further includes a sixth port;
a ninth pipeline, one end of which is communicated with the sixth port, and the other end of which is communicated with the cooler;
and one end of the tenth pipeline is communicated with the first pipeline between the third pipeline and the third stop valve, and the other end of the tenth pipeline is communicated with the cooler.
4. A diesel engine waste heat utilization control method applied to the diesel engine waste heat utilization device according to any one of claims 1 to 3, characterized by comprising:
opening the first port, the second port and the heater, closing the third port and the fourth port, draining water from a water outlet of the diesel engine, and enabling partial water flow to enter the water jacket through the first pipeline, the third pipeline, the temperature control valve and the fourth pipeline in sequence; another part of water flow enters the heater along the first pipeline, and the heater heats the water flow and conveys the water flow to a water inlet of the diesel engine along the second pipeline;
when the temperature of the water flow conveyed to the water inlet of the diesel engine along the second pipeline reaches a starting temperature, the diesel engine is started, the heater is closed, and the smoke exhaust pipe is heated;
the fourth port and the fifth port are opened, water flow sequentially passes through the first pipeline, the third pipeline and the fourth pipeline and enters the water jacket, the smoke exhaust pipe heats the water flow in the water jacket, and the heated water flow sequentially passes through the sixth pipeline, the fifth pipeline, the temperature regulating valve, the seventh pipeline, the water pump, the eighth pipeline and the second pipeline and is transmitted to a water inlet of the diesel engine;
when the temperature of the water flow conveyed to the water inlet of the diesel engine along the second pipeline reaches a loading temperature, the diesel engine is loaded and operated;
the fourth pipeline is provided with a first stop valve, and the sixth pipeline is provided with a second stop valve;
the sixth pipeline is provided with a water drain valve between the second stop valve and the water drain end;
and after the diesel engine is loaded and operated, the second port, the first stop valve and the second stop valve are closed, and the water drain valve is opened.
5. The diesel engine waste heat utilization control method according to claim 4, wherein the temperature control valve includes a first preset temperature and a second preset temperature, the first preset temperature is lower than the loading temperature, a difference between the first preset temperature and the loading temperature is less than or equal to 5, and the second preset temperature is equal to the loading temperature;
when the water flow temperature passing through the temperature control valve reaches the first preset temperature, the temperature control valve controls the second port to start to be closed;
when the water flow temperature passing through the temperature control valve reaches the second preset temperature, the temperature control valve controls the second port to be completely closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5894834A (en) * | 1996-09-06 | 1999-04-20 | Hyundai Motor Company | Cooling system for water cooling type engine |
| CN2497052Y (en) * | 2001-09-27 | 2002-06-26 | 吴金萍 | Locomotive auxiliary heating device |
| CN2674137Y (en) * | 2004-02-02 | 2005-01-26 | 张艳秋 | Means for heating engine of motor vehicle |
| DE10343775A1 (en) * | 2003-09-18 | 2005-05-19 | Volkswagen Ag | Heating and cooling unit for passenger cabin driven by cooling system of engine, comprising additional independent electric pump |
| CN205805808U (en) * | 2016-07-14 | 2016-12-14 | 中国矿业大学 | A kind of anti-explosion diesel engine quick warming-up apparatus |
| CN109139328A (en) * | 2018-09-29 | 2019-01-04 | 潍柴重机股份有限公司 | Engine thermal management systems and its management method |
| CN213899095U (en) * | 2020-12-22 | 2021-08-06 | 北京博威能源科技股份有限公司 | Generator set with cooling water heating system |
| CN115263634A (en) * | 2022-08-05 | 2022-11-01 | 一汽解放汽车有限公司 | Vehicle preheating system and vehicle |
-
2023
- 2023-05-12 CN CN202310538601.7A patent/CN116480446B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5894834A (en) * | 1996-09-06 | 1999-04-20 | Hyundai Motor Company | Cooling system for water cooling type engine |
| CN2497052Y (en) * | 2001-09-27 | 2002-06-26 | 吴金萍 | Locomotive auxiliary heating device |
| DE10343775A1 (en) * | 2003-09-18 | 2005-05-19 | Volkswagen Ag | Heating and cooling unit for passenger cabin driven by cooling system of engine, comprising additional independent electric pump |
| CN2674137Y (en) * | 2004-02-02 | 2005-01-26 | 张艳秋 | Means for heating engine of motor vehicle |
| CN205805808U (en) * | 2016-07-14 | 2016-12-14 | 中国矿业大学 | A kind of anti-explosion diesel engine quick warming-up apparatus |
| CN109139328A (en) * | 2018-09-29 | 2019-01-04 | 潍柴重机股份有限公司 | Engine thermal management systems and its management method |
| CN213899095U (en) * | 2020-12-22 | 2021-08-06 | 北京博威能源科技股份有限公司 | Generator set with cooling water heating system |
| CN115263634A (en) * | 2022-08-05 | 2022-11-01 | 一汽解放汽车有限公司 | Vehicle preheating system and vehicle |
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| CN116480446A (en) | 2023-07-25 |
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