Compressed Water Ejection Device Noise Reduction
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Solution Overview
Problem
Conventional pressurized water ejection devices for weapons from submerged submarines generate significant noise due to direct contact between the pressure piston and brake piston, despite the use of damping materials.
Innovation Solution
A compact low-noise pressurized water ejection device design featuring a first piston rod with a blind hole for the first brake piston, allowing power transmission without direct contact, and utilizing gas pressure to control power transmission between the piston rod and brake piston, with inert gas-filled areas to adjust and control the ejection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If direct contact between pressure piston and brake piston is used for power transmission, then the device structure is simple, but significant noise is generated during ejection
Solution Approach 1:
The patent introduces a fluid medium (water or gas) as an intermediary between the pressure piston and brake piston to transmit power without direct mechanical contact. The pressure piston acts on the fluid, which then transmits the force to the brake piston, eliminating the collision noise while maintaining power transmission functionality.
Solution Approach 2:
The patent replaces the direct mechanical contact system with a hydraulic or pneumatic system. Instead of solid-to-solid force transmission causing impact noise, the system uses fluid pressure transmission, which is quieter and provides smoother force application during the ejection process.
2Object-generated harmful factors
If damping material is applied between pressure piston and brake piston, then noise is reduced, but the device size increases
Solution Approach 1:
By using a fluid intermediary, the patent eliminates the need for thick damping materials that would be required to achieve the same noise reduction through mechanical means alone. The fluid layer provides both noise reduction and power transmission in a compact configuration.
3Volume of moving object
If compact design is implemented by placing brake piston in blind hole of piston rod, then device volume is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent places the brake piston within the blind hole of the piston rod, creating a nested configuration where one component is housed within another. This achieves compact design by utilizing the existing structural space of the piston rod rather than adding external components.
Solution Approach 2:
The piston rod serves multiple functions: it transmits force from the water piston, provides structural support, and contains the blind hole that houses the brake piston. This multi-functionality reduces the need for separate components, simplifying manufacturing despite the compact arrangement.
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 solution effectively reduces noise during the ejection process by eliminating direct contact and utilizing gas pressure for controlled power transmission, enabling a more compact and efficient design while maintaining operational effectiveness.
Implementation Method 1
the first brake piston and the first piston rod particularly preferably enclose a first gas area. Advantage of this form of expression is that the power transmission between the first piston rod and the first brake piston can be adjusted or controlled by the gas pressure
Implementation Method 2
the braking area has a second gas area, the second gas area being closed when pressurized water is ejected, the second gas area being compressed during the pressurized water ejection
Data Source
Figure 1
AI summary
The present invention relates to a compressed water ejection device (10) for the barrel of a weapon, wherein the compressed water ejection device (10) comprises a water cylinder (20), a working cylinder (30) and a braking region (40), wherein a first piston rod (50) connects a water piston (60) in the water cylinder (20) and a ram (70) in the working cylinder (30), wherein a second piston rod (80) connects a first braking piston (90) in the working cylinder (30) and a second braking piston (100) in the braking region (40), characterized in that the first piston rod (50) has a blind hole for receiving the first braking piston (90).