CN210343541U - Engine EGR pipeline dewatering defroster - Google Patents
Engine EGR pipeline dewatering defroster Download PDFInfo
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- CN210343541U CN210343541U CN201921302351.2U CN201921302351U CN210343541U CN 210343541 U CN210343541 U CN 210343541U CN 201921302351 U CN201921302351 U CN 201921302351U CN 210343541 U CN210343541 U CN 210343541U
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Abstract
The utility model discloses an engine EGR pipeline dewatering and deicing device, wherein the EGR pipeline comprises a pipe body, the dewatering and deicing device comprises a dewatering and deicing pipeline which is arranged at the bottom of the pipe body and extends along the radial direction of the pipe body, and the dewatering and deicing pipeline is communicated with the inner cavity of the pipe body; an insulating heating body is arranged in the water and ice removing pipeline, a control valve for controlling the on-off of the water and ice removing pipeline is arranged on the water and ice removing pipeline at the downstream of the insulating heating body, and an exhaust fan for auxiliary exhaust of gas in the pipeline is arranged on the water and ice removing pipeline at the downstream of the control valve; the insulating heating body, the control valve and the exhaust fan are all electrically connected with an electric control unit of the engine. The utility model integrates the functions of electric heating, exhaust and dewatering, can effectively reduce the residual vapor in the EGR pipeline after the engine is shut down, and can prevent the accumulated water in the pipeline from freezing; engine performance is ensured while the life of the EGR system is extended.
Description
Technical Field
The utility model belongs to the technical field of the engine spare part, especially, relate to an engine EGR pipeline dewatering defroster.
Background
Exhaust Gas Recirculation (EGR) technology, an important technology commonly adopted by six engines in China, aims to reduce the emission of pollutants in exhaust gas by reintroducing part of the exhaust gas discharged from the engine into an intake pipe to mix with fresh air. The tail gas of the natural gas engine contains a large amount of water vapor, the temperature of the natural gas engine is higher than that of the natural gas engine in the fifth country, after the engine is stopped, the water vapor remained in an EGR pipeline is easy to condense into water, and even freezes to cause pipeline blockage and unsmooth air intake in a low-temperature environment, so that the performance of the engine is influenced. And the condensed water vapor in the EGR pipe and the sulfur compounds in the exhaust gas act to form acids, which corrode relevant parts in the pipe, resulting in a reduction in the life of the parts.
Although the natural gas engine firstly implements the national six-law at present, sufficient attention is not paid to the water removal and the ice removal of the EGR pipeline. In view of this, it is necessary to develop a device for removing water and ice from an EGR line, which is an improvement of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a water removing and deicing device for an EGR pipeline of an engine, which can effectively reduce the residual water vapor in the EGR pipeline after the engine is shut down and can prevent the accumulated water in the pipeline from freezing; engine performance is ensured while the life of the EGR system is extended.
The utility model provides a technical scheme that its technical problem adopted is: an engine EGR pipeline water and ice removing device comprises a pipe body, wherein the water and ice removing device comprises a water and ice removing pipeline which is arranged at the bottom of the pipe body and extends along the radial direction of the pipe body, and the water and ice removing pipeline is communicated with an inner cavity of the pipe body;
an insulating heating body is arranged in the water and ice removing pipeline, a control valve for controlling the on-off of the water and ice removing pipeline is arranged on the water and ice removing pipeline at the downstream of the insulating heating body, and an exhaust fan for auxiliary exhaust of gas in the pipeline is arranged on the water and ice removing pipeline at the downstream of the control valve;
the insulating heating body, the control valve and the exhaust fan are all electrically connected with an electric control unit of the engine.
Further, the control valve is an electric control butterfly valve or an electric control ball valve.
Further, the exhaust fan comprises a housing, a driving motor fixed in the housing, and turbine blades connected with an output shaft of the driving motor; the driving motor is covered with a protective cover.
Further, the housing is fixed to an end face of an outlet flange of the control valve.
Further, the insulating heating body comprises a heating grid coated with a heat conduction insulating layer.
Further, an outlet used for communicating the inner cavity of the pipe body with the water and ice removing pipeline is formed in the bottom of the pipe body; and the inner walls of the bottom of the pipe body at the two sides of the outlet are provided with flow guide inclined planes which incline to the outlet.
Further, the water and ice removing pipeline and the pipe body are of an integrally formed structure.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model discloses an engine EGR pipeline water removing and deicing device, which comprises a water removing and deicing pipeline arranged at the bottom of a pipe body and extending along the radial direction of the pipe body, wherein the water removing and deicing pipeline is communicated with an inner cavity of the pipe body; an insulating heating body is arranged in the water and ice removing pipeline, a control valve for controlling the on-off of the water and ice removing pipeline is arranged on the water and ice removing pipeline at the downstream of the insulating heating body, and an exhaust fan for auxiliary exhaust of gas in the pipeline is arranged on the water and ice removing pipeline at the downstream of the control valve; the insulating heating body, the control valve and the exhaust fan are all electrically connected with an electric control unit of the engine. Before the engine is started, an EGR water removal switch is pressed, when the temperature in an EGR pipeline is lower than T2 ℃ (can be set), an insulating heating body is automatically started to heat up to melt ice blocks in the EGR pipeline, and meanwhile, a control valve is opened to discharge water; when the engine is started, the control valve is closed to prevent the exhaust gas from flowing out. When the engine is stopped, the sensor detects that the rotating speed is 0rpm, the vehicle speed is 0km/h, and the temperature in the EGR pipeline is higher than T1 ℃ (can be set), the exhaust fan and the control valve are automatically opened, and residual steam in the EGR pipeline is discharged.
In conclusion, the utility model integrates the functions of electric heating, exhaust and dewatering into a whole, and can realize automatic treatment by matching with corresponding electric control logic; residual water vapor in the EGR pipeline after the engine is stopped is effectively reduced, and accumulated water in the EGR pipeline is prevented from freezing; the starting performance of the engine is ensured, and the service life of the EGR system is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an engine EGR pipeline de-icing device of the present invention;
FIG. 2 is a schematic structural view of the engine EGR pipeline de-icing apparatus of the present invention from another perspective;
FIG. 3 is a schematic view of the exploded structure of FIG. 1;
FIG. 4 is a partial cross-sectional view of FIG. 1;
in the figure: the device comprises a pipe body 1, a water and ice removing pipeline 2, a flange 21, an insulating heating body 3, an electric control ball valve 4, an inlet flange 41, an outlet flange 42, an exhaust fan 5, a housing 51, a driving motor 52, a turbine fan blade 53, a turbine fan blade 6, an outlet 7, a connecting wire harness and a wire harness plug 8.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1 to 4, the EGR line of an engine, which is used for removing water and ice, comprises a pipe body 1. The water and ice removing device comprises a water and ice removing pipeline 2 which is arranged at the bottom of the pipe body 1 (the lower position in the middle of the pipe body 1) and extends along the radial direction of the pipe body 1, and an outlet 6 which is used for communicating the inner cavity of the pipe body 1 with the water and ice removing pipeline 2 is arranged at the bottom of the pipe body 1. The inner walls of the bottom of the pipe body 1 at the two sides of the outlet 6 (the two sides of the upstream and downstream of the exhaust gas flow direction) are provided with flow guide inclined planes (not shown in the figure) which incline towards the outlet 6; facilitating the outflow of condensed water in the pipe body 1.
The water and ice removing pipeline 2 and the pipe body 1 are of an integrally formed structure or a split welding structure. Be equipped with insulating heating body 3 in dewatering deicing pipeline 2, be provided with the control valve that is used for controlling dewatering deicing pipeline 2 break-make on the dewatering deicing pipeline 2 of insulating heating body 3 low reaches, the control valve can be automatically controlled butterfly valve or automatically controlled ball valve 4, and automatically controlled ball valve 4 is adopted to this embodiment. And an exhaust fan 5 for auxiliary exhaust of gas in the pipeline is arranged on the water and ice removing pipeline 2 at the downstream of the control valve. The insulating heating body 3, the control valve and the exhaust fan 5 are electrically connected with an electric control unit of the engine through a connecting wire harness 7 and a wire harness plug 8. Wherein, the insulating heating body 3 comprises a heating grid coated with a heat conducting insulating layer. The control valve is an electric control butterfly valve or an electric control ball valve 4; the present embodiment uses an electrically controlled ball valve 4.
In addition, the exhaust fan 5 includes a housing 51, a driving motor 52 fixed in the housing 51, and turbine blades 53 connected to an output shaft of the driving motor 52; the driving motor 52 is externally covered with a protective cover having a waterproof and moistureproof function.
In this embodiment, the inlet flange 41 of the electric ball valve 4 is fixedly connected with the flange 21 of the water and ice removing pipeline 2, and the housing 51 is fixed on the end face of the outlet flange 42 of the electric ball valve 4. It is also possible to connect a transition pipe at the outlet flange 42 of the electric control ball valve 4, and install the exhaust fan 5 at the end of the transition pipe.
The following control logic can be matched for automatic processing:
when the engine is stopped, the sensor detects that the rotating speed of the engine is 0rpm, the vehicle speed is 0km/h and the temperature in the EGR pipeline is higher than T1 ℃ (can be set), an electronic control unit of the engine controls an electronic control ball valve 4 to be opened and an exhaust fan 5 to work, water vapor remained in a pipe body 1 is discharged from a water and ice removing pipeline 2, and an EGR water removing switch is closed after the calibrated working time (can be estimated at time T); at this time, the electronic control unit of the engine controls the electronic control ball valve 4 to close, and the exhaust fan 5 stops working.
When the air temperature is lower than T2 deg.C (0 deg.C can be set), the condensed water vapor in the EGR pipeline will cause ice accumulation, which will affect the normal operation of the EGR system after the engine is started next time. Therefore, an EGR (exhaust gas recirculation) water removal switch is required to be arranged in the cab, before the engine is started, a driver can start the EGR water removal switch, an electric control unit of the engine controls the insulating heating body 3 to be started to heat up so as to melt ice blocks in an EGR pipeline, and simultaneously controls the electric control ball valve 4 to be opened so as to discharge water; when the engine is started, the electric control ball valve 4 is controlled to be closed, and waste gas is prevented from flowing out.
The utility model integrates the functions of electric heating, exhaust and dewatering into a whole, and can realize automatic treatment by matching the electric control logic; residual water vapor in the EGR pipeline after the engine is stopped is effectively reduced, and accumulated water in the EGR pipeline is prevented from freezing; the starting performance of the engine is ensured, and the service life of the EGR system is prolonged.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the design principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (7)
1. The engine EGR pipeline water and ice removing device is characterized by comprising a water and ice removing pipeline which is arranged at the bottom of the pipeline and extends along the radial direction of the pipeline, and the water and ice removing pipeline is communicated with an inner cavity of the pipeline;
an insulating heating body is arranged in the water and ice removing pipeline, a control valve for controlling the on-off of the water and ice removing pipeline is arranged on the water and ice removing pipeline at the downstream of the insulating heating body, and an exhaust fan for auxiliary exhaust of gas in the pipeline is arranged on the water and ice removing pipeline at the downstream of the control valve;
the insulating heating body, the control valve and the exhaust fan are all electrically connected with an electric control unit of the engine.
2. The engine EGR pipeline de-icing apparatus of claim 1 wherein said control valve is an electrically controlled butterfly valve or an electrically controlled ball valve.
3. The engine EGR line de-icing apparatus of claim 1 wherein said exhaust fan comprises a housing, a drive motor secured within said housing, and turbine blades connected to an output shaft of said drive motor; the driving motor is covered with a protective cover.
4. The engine EGR line de-watering and de-icing apparatus of claim 3 wherein said housing is secured to an end face of an outlet flange of said control valve.
5. The engine EGR pipeline de-icing apparatus of claim 1 wherein said insulated heater comprises a heater grid coated with a thermally conductive and insulating layer.
6. The engine EGR line de-icing apparatus of claim 1 wherein the bottom of said tube body is provided with an outlet for communicating the interior cavity of said tube body with said de-icing duct; and the inner walls of the bottom of the pipe body at the two sides of the outlet are provided with flow guide inclined planes which incline to the outlet.
7. The engine EGR line de-icing apparatus of claim 1 wherein said de-icing and de-icing duct is integrally formed with said tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302351.2U CN210343541U (en) | 2019-08-09 | 2019-08-09 | Engine EGR pipeline dewatering defroster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302351.2U CN210343541U (en) | 2019-08-09 | 2019-08-09 | Engine EGR pipeline dewatering defroster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210343541U true CN210343541U (en) | 2020-04-17 |
Family
ID=70174479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921302351.2U Active CN210343541U (en) | 2019-08-09 | 2019-08-09 | Engine EGR pipeline dewatering defroster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210343541U (en) |
-
2019
- 2019-08-09 CN CN201921302351.2U patent/CN210343541U/en active Active
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