Exhaust Gas Sampling System Evacuation Line Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing exhaust-gas sampling systems require lengthy evacuation times due to the use of small, space-efficient vacuum pumps, leading to increased cycle times and operational costs.
Innovation Solution
Incorporating a main throughput pump into the evacuation process via a dedicated evacuation line, which connects directly to the sample gas bags, allowing for faster evacuation without the need for additional pumps or increased infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If small vacuum pumps are used for evacuation, then space requirements are reduced, but evacuation time increases
Solution Approach 1:
The main throughput pump is designed to perform multiple functions: it conveys sample gas during normal operation and also serves as the evacuation pump for removing residual gas from sample bags. This eliminates the need for a separate vacuum pump, reducing space requirements while maintaining fast evacuation capability.
Solution Approach 2:
The invention merges the evacuation function with the main throughput pump by providing a fluidic connection between the pump and sample bags via an evacuation line. This combination allows the system to use one pump for both sample gas conveyance and bag evacuation, avoiding the time loss associated with smaller dedicated vacuum pumps.
2Ease of manufacture
If small vacuum pumps are used for evacuation, then investment costs are reduced, but evacuation time increases
Solution Approach 1:
The main throughput pump is designed to perform multiple functions: it conveys sample gas during normal operation and also serves as the evacuation pump for removing residual gas from sample bags. This eliminates the need for a separate vacuum pump, reducing space requirements while maintaining fast evacuation capability.
Solution Approach 2:
The invention merges the evacuation function with the main throughput pump by providing a fluidic connection between the pump and sample bags via an evacuation line. This combination allows the system to use one pump for both sample gas conveyance and bag evacuation, avoiding the time loss associated with smaller dedicated vacuum pumps.
3Loss of energy
If small vacuum pumps are used for evacuation, then operating costs are reduced, but evacuation time increases
Solution Approach 1:
The main throughput pump serves itself by performing both sample gas conveyance and evacuation functions. During evacuation, the pump processes both the residual gas from sample bags and new sample gas from the exhaust pipe, effectively utilizing its full capacity without requiring additional energy-intensive vacuum pumps.
Solution Approach 2:
The pump operates continuously without idle periods. During evacuation, it simultaneously handles residual gas from bags and incoming sample gas, maximizing its useful action and reducing total operating time compared to systems that switch between different pumps.
4Speed
If the main throughput pump is used for evacuation, then evacuation speed increases, but the pump must handle additional gas flows
Solution Approach 1:
The invention merges the evacuation function with the main throughput pump by providing a fluidic connection between the pump and sample bags via an evacuation line. This combination allows the system to use one pump for both sample gas conveyance and bag evacuation, avoiding the time loss associated with smaller dedicated vacuum pumps.
Solution Approach 2:
The pump operates continuously without idle periods. During evacuation, it simultaneously handles residual gas from bags and incoming sample gas, maximizing its useful action and reducing total operating time compared to systems that switch between different pumps.
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
Significantly reduces evacuation time for sample gas bags, enabling faster cycle times for exhaust gas analysis while maintaining cost-effectiveness by utilizing existing pumps for both gas conveyance and evacuation.
Implementation Method 1
a main throughput pump (24) configured to convey a sample gas in the main conveying line (18)
Implementation Method 2
an evacuation line (66) configured to establish a fluidic connection between the main throughput pump (24) and the sample gas bag (48)
Data Source
AI summary
An exhaust-gas sampling system includes a main conveying line, a main throughput pump which conveys a sample gas in the main conveying line, a sample gas bag, a sample gas withdrawal line which fluidically connects the main conveying line to the sample gas bag, a throughflow control element arranged in the sample gas withdrawal line, an analyzer, a sample gas analysis line which connects the analyzer to the sample gas bag, an evacuation line which establishes a fluidic connection between the main throughput pump and the sample gas bag, and a first valve arranged in the evacuation line. The first valve opens and closes the evacuation line.