Exhaust Gas Reducer Drying and Differential Pressure Measurement
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Solution Overview
Problem
Existing exhaust gas reduction filters in diesel vehicles face issues with rapid drying after regeneration and separate processes for differential pressure measurement, leading to complicated operations.
Innovation Solution
A rapid drying and differential pressure measuring device with a novel structure that integrates drying and pressure measurement functions, utilizing a lifting barrel, ring blower, heater, and sensors to efficiently dry and measure differential pressure in a single operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate processes are used for drying the exhaust gas reduction filter and measuring differential pressure, then each function can be performed independently, but the operations become complicated and time-consuming
Solution Approach 1:
The patent combines the drying function and differential pressure measurement function into a single integrated device. The drying unit includes a blower and heater that can dry the exhaust gas reduction filter, while the differential pressure measurement unit simultaneously measures the pressure difference across the filter. This merging of functions allows both operations to be performed in one process rather than as separate procedures, reducing operational complexity while maintaining the reliability of both functions.
Solution Approach 2:
The integrated device serves multiple functions: it can dry the exhaust gas reduction filter, measure differential pressure, and potentially monitor drying progress through pressure measurements. This multi-functionality eliminates the need for separate equipment for each operation, simplifying the overall process while ensuring that each function is performed effectively.
2Reliability
If water is supplied to wash pollutants from the exhaust gas reduction filter, then regeneration is achieved, but the filter becomes wet and requires rapid drying
Solution Approach 1:
The drying process uses continuous airflow from the blower combined with heating to rapidly evaporate and remove moisture from the exhaust gas reduction filter. The system maintains continuous action rather than intermittent drying, which accelerates the drying process and reduces the time required after water washing regeneration.
Solution Approach 2:
The drying unit changes the temperature parameter by heating the air that passes through the filter, and controls the flow rate parameter through the blower. By adjusting these parameters (temperature and airflow), the system achieves rapid drying of the filter after it has been wetted during the water washing regeneration process.
3Duration of action of stationary object
If pollutants accumulate in the exhaust gas reduction filter over time, then the filter continues to operate, but performance degrades and regeneration is required
Solution Approach 1:
The system performs preliminary differential pressure measurement to detect when pollutant accumulation begins to affect filter performance. By monitoring the differential pressure across the filter before complete failure occurs, the system can schedule regeneration operations at optimal intervals, maximizing the filter's service life while maintaining reliable performance. The integrated device allows for regular monitoring without additional complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively dries and measures differential pressure in a unified process, improving operational efficiency and safety by preventing damage to the exhaust gas reducer and enhancing environmental control.
Implementation Method 1
a ring blower (24) provided in the lower support (11) and connected to the upper adapter (23) through an air supply pipe (25) to supply air to the upper adapter (23)
Implementation Method 2
a heater (26) which is provided in a middle portion of the air supply pipe (25) to divide the air supply pipe (25) into a first air supply part (25a) connected to the ring blower (24) and a second air supply part (25b) connected to the upper adapter (23) and heats air supplied through the air supply pipe (25)
Implementation Method 3
a humidity sensor (33) provided in the concave portion (11b)
Implementation Method 4
an entrance temperature sensor (31) provided in the second air supply part (25b) to measure a temperature of air supplied to the upper adapter (23), an exit temperature sensor (32) provided in the concave portion (11b) to measure an internal temperature of the concave portion (11b)
Implementation Method 5
a lifting cylinder (22) connected to the lifting barrel (21) to raise or lower the lifting barrel (21)
Implementation Method 6
a controller (34) which receives signals of the entrance temperature sensor (31), the exit temperature sensor (32), and the humidity sensor (33) to control operation of the ring blower (24) and the heater (26)
Data Source
AI summary
The present invention relates to a differential pressure measuring device with a novel structure which is simple and accurately checks a state of an exhaust gas reduction filter (3). The rapid drying and differential pressure measuring device for an exhaust gas reducer according to the present invention may raise an exhaust gas reducer (1) for a commercial vehicle loaded on a lifting barrel (21) using a lifting cylinder (22) to bring the exhaust gas reducer (1) for a commercial vehicle into close contact with the upper adapter (23). Accordingly, there are advantages of effectively drying the exhaust gas reducer (1) for a commercial vehicle by effectively supplying high temperature air into the exhaust gas reducer (1) for a commercial vehicle and drying various types of exhaust gas reducers for commercial vehicles with different vertical heights.