Movable diesel-driven air compressor additionally provided with diesel engine emission aftertreatment device
By setting the after-processing device in the cooler exhaust path of the air compressor device, using the existing cooler to dissipate heat for the after-processing device, the movable diesel-driven air compressor cannot add an additional cooler, which makes the sensor unable to work normally. The problem is that the normal operation of the post-processing device is achieved.
Patent Information
- Application Number
- CN202420818047.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The existing movable diesel-driven air compressor cannot add an additional cooler to cool the diesel engine emission after-treatment device, resulting in the sensor not working properly.
The after-treatment device is arranged in the exhaust path of the cooler, and the cooler of the existing air compressor device is used to dissipate heat for the after-treatment device, and the temperature in the exhaust path of the cooler is lower than the operating temperature of the after-treatment device.
The sensor on the after-processing device can be properly operated without adding a cooler, solving the problem that the sensor cannot work properly.
Smart Images
Figure CN222276864U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air compressors, in particular to a movable diesel-driven air compressor equipped with a diesel engine exhaust post-processing device. Background Art
[0002] The new emission standards stipulate that diesel engine driven air compressors need to be equipped with emission after-treatment devices. The after-treatment devices used include diesel oxidation catalyst (DOC) + diesel particulate filter (DPF) + selective catalytic reducer (SCR). The diesel oxidation catalyst (DOC) + diesel particulate filter (DPF) are generally high-temperature regenerators set together, and the selective catalytic reduction technology (SCR) is a separate catalytic reducer. The high-temperature regenerator and catalytic reducer are connected and installed with corresponding sensors.
[0003] The high-temperature regenerator and catalytic reducer of the after-treatment device release a large amount of heat during operation. Even with an insulation layer, their surface temperature will exceed the normal operating temperature of the sensor. The internal space between the chassis and the outer cover of the mobile diesel-driven air compressor is more compact after adding the after-treatment device. If an additional cooler is added, the chassis and outer cover structure will change significantly and the cost will be high. Therefore, it is impossible to add an additional cooler to cool the after-treatment device to ensure the normal operation of the sensor on the after-treatment device. Utility Model Content
[0004] Purpose of the utility model: to provide a portable diesel-driven air compressor equipped with a diesel engine exhaust after-treatment device. By arranging the after-treatment device in the exhaust path of the cooler, the cooler of the existing air compressor device is used to dissipate the heat of the after-treatment device, and the sensor on the after-treatment device can work normally without adding a cooler, which solves the problem that the portable diesel-driven air compressor in the prior art cannot add an additional cooler to cool the after-treatment device, resulting in the sensor on the after-treatment device not being able to work normally.
[0005] The technical solution of the utility model is: a movable diesel-driven air compressor equipped with a diesel engine exhaust post-processing device, comprising: a chassis and an outer cover installed on the chassis.
[0006] The movable diesel-driven air compressor also includes: a diesel-driven air compressor device installed between the chassis and the outer cover, a cooler and a post-processing device.
[0007] The post-processing device is connected to the diesel-driven air compressor device, and is used for post-processing the exhaust gas discharged by the diesel-driven air compressor device.
[0008] The cooler is connected to the diesel-driven air compressor device, and the post-processing device is arranged in the exhaust path of the cooler. The cooler is used to cool the diesel-driven air compressor device and the post-processing device.
[0009] In a further embodiment, the cooler includes a liquid cooling device and a fan, the liquid cooling device and the fan are vertically arranged between the diesel-driven air compressor device and the post-processing device, and the fan is installed on a side of the liquid cooling device close to the diesel-driven air compressor device.
[0010] In a further embodiment, the post-processing device includes: a high-temperature regenerator, and a catalytic reducer connected to the high-temperature regenerator, and the high-temperature regenerator is connected to a diesel-driven air compressor.
[0011] The cooler, high-temperature regenerator and catalytic reducer are arranged in sequence.
[0012] In a further embodiment, the post-treatment device further includes: a transition air pipe, and the high-temperature regenerator, the transition air pipe and the catalytic reducer are connected in sequence.
[0013] One end of the transition air pipe is arranged at the right end of the high-temperature regenerator, and the other end thereof is arranged at the left end of the catalytic reducer.
[0014] The transition air pipe is arranged above the high-temperature regenerator and the catalytic reducer, so that the transition air pipe is transversely arranged in the exhaust path of the cooler.
[0015] In a further embodiment, the post-processing device includes: a high-temperature regenerator, and a catalytic reducer connected to the high-temperature regenerator, and the high-temperature regenerator is connected to a diesel-driven air compressor.
[0016] The high-temperature regenerator and the catalytic reducer are arranged on one side of the cooler, and the catalytic reducer is arranged above the high-temperature regenerator.
[0017] In a further embodiment, exhaust windows are provided above, to the left, to the right and to the rear of the outer cover near the post-processing device.
[0018] The beneficial effect of the utility model is that the present application arranges the post-processing device in the exhaust path of the cooler, utilizes the phenomenon that the temperature in the exhaust path of the cooler for cooling the diesel-driven air compressor device is lower than the working temperature of the post-processing device, and can utilize the cooler of the existing air compressor device to dissipate heat for the post-processing device, and can make the sensor on the post-processing device work normally without adding a cooler, thus solving the problem that the prior art movable diesel-driven air compressor device cannot add an additional cooler to cool the post-processing device, resulting in the sensor on the post-processing device not being able to work normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic axonometric diagram of the internal structure of a hidden outer cover embodiment of the utility model.
[0020] Figure 2It is a schematic isometric view from another angle of the internal structure of the hidden outer cover embodiment of the utility model.
[0021] Figure 3 It is a front view schematic diagram of the internal structure of the hidden outer cover embodiment of the utility model.
[0022] Figure 4 It is a top view schematic diagram of the internal structure of the hidden outer cover embodiment of the utility model.
[0023] Figure 5 It is an axonometric schematic diagram of an embodiment of the utility model installed with an outer cover.
[0024] The reference numerals shown in the figure are: chassis 100, diesel-driven air compressor device 200, cooler 300, liquid cooling device 301, fan 302, post-processing device 400, high-temperature regenerator 401, catalytic reducer 402, transition air duct 403, outer cover 500, exhaust window 501. DETAILED DESCRIPTION
[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0026] The utility model discloses a portable diesel-driven air compressor equipped with a diesel engine exhaust after-treatment device. The after-treatment device is arranged in an exhaust path of a cooler, and the cooler of the existing air compressor device is used to dissipate heat for the after-treatment device. The sensor on the after-treatment device can work normally without adding a cooler, thereby solving the problem that the portable diesel-driven air compressor in the prior art cannot add an additional cooler to cool the after-treatment device, resulting in the sensor on the after-treatment device not being able to work normally.
[0027] In the first embodiment, the portable diesel-driven air compressor comprises: a chassis 100, and an outer cover 500 installed on the chassis 100, and a diesel-driven air compressor device 200, a cooler 300 and a post-processing device 400 installed between the chassis 100 and the outer cover 500.
[0028] like Figure 1-4 The diesel-driven air compressor device 200, the cooler 300 and the post-processing device 400 are all installed on the chassis 100. Four wheels are installed on the chassis 100. A tow bar is also provided at the end of the chassis 100. When the air compressor needs to be moved, the air compressor can be hung on a trailer by the tow bar. During the movement, the outer cover 500 can provide protection for the internal diesel-driven air compressor device 200, the cooler 300 and the post-processing device 400 to reduce the invasion of external dust and rain.
[0029] The post-processing device 400 is connected to the diesel-driven air compressor device 200, and the post-processing device 400 is used for post-processing the exhaust gas discharged by the diesel-driven air compressor device 200.
[0030] The cooler 300 is connected to the diesel-driven air compressor device 200 , and the post-processing device 400 is disposed in an exhaust path of the cooler 300 . The cooler 300 is used to cool the diesel-driven air compressor device 200 and the post-processing device 400 .
[0031] Regarding the cooler 300, Figure 1-4 The cooler 300 shown includes a liquid cooling device 301 and a fan 302 . The liquid cooling device 301 and the fan 302 are vertically arranged between the diesel-driven air compressor device 200 and the post-processing device 400 . The fan 302 is installed on one side of the liquid cooling device 301 close to the diesel-driven air compressor device 200 .
[0032] Regarding the post-processing device 400 , the post-processing device 400 includes: a high-temperature regenerator 401 , and a catalytic reducer 402 connected to the high-temperature regenerator 401 , and the high-temperature regenerator 401 is connected to the diesel-driven air compressor device 200 .
[0033] The diesel-driven air compressor 200, the cooler 300, the high-temperature regenerator 401 and the catalytic reducer 402 are arranged in sequence.
[0034] The post-treatment device 400 also includes sensors connected to the high-temperature regenerator 401 and the catalytic reducer 402. The sensors are installed above the high-temperature regenerator 401 and the catalytic reducer 402 and are located in the exhaust path of the cooler 300. The sensors include at least an oxide sensor, a pressure difference sensor and a temperature sensor.
[0035] By arranging the catalytic reducer 402 with a higher temperature at an end away from the cooler 300 , interference with the cooling of the high-temperature regenerator 401 can be reduced.
[0036] exist Figure 1-4 In the illustrated embodiment, the post-treatment device 400 further includes: a transition air pipe 403, and the high-temperature regenerator 401, the transition air pipe 403 and the catalytic reducer 402 are connected in sequence.
[0037] One end of the transition air pipe 403 is arranged at the right end of the high-temperature regenerator 401 , and the other end thereof is arranged at the left end of the catalytic reducer 402 .
[0038] The transition air pipe 403 is disposed above the high-temperature regenerator 401 and the catalytic reducer 402 , so that the transition air pipe 403 is transversely disposed in the exhaust path of the cooler 300 .
[0039] The transition air duct 403 is disposed transversely in the exhaust path of the cooler 300, thereby increasing the contact area between the transition air duct 403 and the exhaust path, and further improving the heat dissipation efficiency.
[0040] As shown in the figure, the post-treatment device 400 further includes: a tail gas pipe, which is installed on the catalytic reducer 402 and extends to the outside through the outer cover 500, and is used to discharge the treated exhaust gas to the outside.
[0041] Regarding the housing 500, Figure 5 The outer cover 500 shown is provided with exhaust windows 501 above, to the left, to the right and to the rear of the part close to the post-processing device 400, so that the outer cover 500 protects the diesel-driven air compressor device 200, the cooler 300 and the post-processing device 400 while ensuring the heat dissipation effect.
[0042] Working principle: A heat insulation layer is provided on the surface of the high-temperature regenerator 401 and the catalytic reducer 402. During operation, the surface temperature of the high-temperature regenerator 401 and the catalytic reducer 402 of the post-processing device 400 is actually measured at about 200°C through the heat insulation part of the heat insulation layer. The maximum temperature of the exhaust path after the wind blown by the fan 302 passes through the liquid cooling device 301 is 80°C. In the process of the fan 302 blowing away the heat of the liquid cooling device 301, after expansion and heat dissipation, the temperature of the exhaust path of the cooler 300 is much lower than the surface temperature of the post-processing device 400. After the exhaust path of the cooler 300 is cooled, the surface temperature of the post-processing device 400 can be controlled within 150°C of the normal operating temperature of the sensor. Therefore, the cooler 300 of the existing air compressor is used to dissipate heat for the post-processing device 400, so that the sensor on the post-processing device 400 can work normally without adding a cooler 300.
[0043] In the second embodiment, the arrangement of the high-temperature regenerator 401, the catalytic reducer 402 and the cooler 300 is changed on the basis of the first embodiment.
[0044] In this embodiment, the post-treatment device 400 includes: a high-temperature regenerator 401 and a catalytic reducer 402 connected to the high-temperature regenerator 401 , and the high-temperature regenerator 401 is connected to the diesel-driven air compressor device 200 .
[0045] The high temperature regenerator 401 and the catalytic reducer 402 are arranged on one side of the cooler 300 , and the catalytic reducer 402 is arranged above the high temperature regenerator 401 .
[0046] The high temperature regenerator 401 and the catalytic reducer 402 are arranged vertically on one side of the cooler 300 and cooled by wind at the same time, which further increases the contact area between the high temperature regenerator 401 and the catalytic reducer 402 and the exhaust path.
[0047] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.
Claims
1. A portable diesel-driven air compressor equipped with a diesel engine exhaust aftertreatment device, comprising: a chassis, and a cover mounted on the chassis; The movable diesel-driven air compressor further comprises: a diesel-driven air compressor device, a cooler and a post-processing device installed between the chassis and the outer cover; The post-processing device is connected to the diesel-driven air compressor device, and the post-processing device is used to perform post-processing work on the exhaust gas discharged by the diesel-driven air compressor device; The cooler is connected to the diesel-driven air compressor device, and the post-processing device is arranged in the exhaust path of the cooler. The cooler is used to cool the diesel-driven air compressor device and the post-processing device.
2. A portable diesel-driven air compressor equipped with a diesel engine exhaust post-treatment device according to claim 1, characterized in that: The cooler comprises: a liquid cooling device and a fan, wherein the liquid cooling device and the fan are vertically arranged between the diesel-driven air compressor device and the post-processing device, and the fan is installed on a side of the liquid cooling device close to the diesel-driven air compressor device.
3. The portable diesel-driven air compressor equipped with a diesel engine exhaust post-treatment device according to claim 1, characterized in that: The post-processing device comprises: a high-temperature regenerator and a catalytic reducer connected to the high-temperature regenerator, wherein the high-temperature regenerator is connected to a diesel-driven air compressor; The cooler, high-temperature regenerator and catalytic reducer are arranged in sequence.
4. A portable diesel-driven air compressor equipped with a diesel engine exhaust post-treatment device according to claim 3, characterized in that: The post-treatment device further comprises: a transition air pipe, wherein the high temperature regenerator, the transition air pipe and the catalytic reducer are connected in sequence; One end of the transition air pipe is arranged at the right end of the high temperature regenerator, and the other end thereof is arranged at the left end of the catalytic reducer; The transition air pipe is arranged above the high-temperature regenerator and the catalytic reducer, so that the transition air pipe is transversely arranged in the exhaust path of the cooler.
5. The portable diesel-driven air compressor equipped with a diesel engine exhaust post-treatment device according to claim 1, characterized in that: The post-processing device comprises: a high-temperature regenerator and a catalytic reducer connected to the high-temperature regenerator, wherein the high-temperature regenerator is connected to a diesel air compressor; The high-temperature regenerator and the catalytic reducer are arranged on one side of the cooler, and the catalytic reducer is arranged above the high-temperature regenerator.
6. The portable diesel-driven air compressor equipped with a diesel engine exhaust after-treatment device according to claim 1, characterized in that: Exhaust windows are arranged above, on the left, on the right and on the rear of the outer cover near the post-processing device.