Rain Shield Cover Plates Forming an Exhaust Extension Pipe
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Solution Overview
Problem
Conventional rain shield assemblies for exhaust mufflers are inadequate in preventing rainwater and debris entry, causing safety concerns and noise issues due to insufficient height, leading to potential backflow of exhaust gas into turbine engines.
Innovation Solution
A rain shield assembly with multiple cover plates that pivot to form an additional pipe structure, extending exhaust gases to a higher space and preventing backflow, while automatically opening and closing to shield the pipe opening from rainwater and debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cover plate is used for the exhaust muffler, then the structure is simple, but the shielding effect is insufficient allowing rainwater and debris to enter
Solution Approach 1:
The single cover plate is divided into multiple cover plates (first cover plate and second cover plate) that can move independently. This segmentation allows each plate to provide partial shielding while collectively achieving complete coverage, resolving the contradiction between structural simplicity and shielding effectiveness.
Solution Approach 2:
The cover plates are made movable through transmission mechanisms and locking devices, transitioning from a static single plate to dynamic multiple plates. This enables the system to adapt between open and closed states, improving shielding reliability while maintaining operational flexibility.
2Length of stationary object
If the exhaust muffler height is limited by road regulations, then the device meets regulatory requirements, but noise reduction is insufficient
Solution Approach 1:
Instead of increasing height vertically, the invention extends the exhaust gas guidance horizontally using the cover plates forming an additional pipe structure. This dimensional shift achieves noise reduction and backflow prevention without violating height regulations.
3Length of stationary object
If the exhaust muffler height is insufficient, then the device meets regulatory requirements, but exhaust gas backflow occurs reducing engine lifetime
Solution Approach 1:
The invention compensates for insufficient vertical height by creating a horizontal extension path for exhaust gases using the movable cover plates. This allows exhaust gases to be guided to a higher space without increasing the muffler's vertical dimension, preventing backflow while meeting regulatory height limits.
Solution Approach 2:
The dynamic cover plates can adjust to form an extended exhaust path, enabling the system to overcome the height limitation and prevent backflow adaptively, thereby protecting engine lifetime without violating height regulations.
4Object-generated harmful factors
If multiple cover plates are used to form additional pipe structure, then noise is reduced and backflow is prevented, but the device complexity increases
Solution Approach 1:
The system uses multiple cover plates that segment the shielding function, with each plate contributing to noise reduction and backflow prevention. While this increases component count, each segment remains relatively simple in design, balancing complexity with performance improvement.
Solution Approach 2:
The multiple cover plates serve multiple functions simultaneously: they provide shielding against rainwater, reduce noise through extended gas path, prevent backflow by guiding gases to higher space, and can be controlled by a unified transmission mechanism. This multi-functionality justifies the increased structural complexity.
Data Source
AI summary
The present disclosure provides a rain shield assembly, a pipe assembly and a turbine fracturing unit. The rain shield assembly comprises at least two sets of cover plate assemblies, wherein each set of cover plate assembly comprises a cover plate, a transmission mechanism and a locking device. When the cover plate(s) is(are) at a closed position, the opening is covered; when the cover plate of each set of cover plate assembly is at an open position, an additional pipe structure which is open at both ends and extends along an extension direction of the pipe is formed by which. According to the present disclosure, the cover plate(s) of the rain shield assembly, when opened, will jointly form an additional pipe structure connected to the open end of the pipe to guide the exhaust gas of the pipe to a further space. Such an arrangement may reduce noise on the one hand, and prevent backflow of the exhaust gas on the other hand. The cover plate(s) of the rain shield assembly, when closed, can shield the opening of the pipe to prevent entry of rainwater.