Extinguishing Lance Hydraulic Piston for Secure Wall Attachment
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Solution Overview
Problem
Existing fire extinguishing lances face issues with unreliable attachment to walls, leading to unintentional removal during use due to insufficient holding force, especially in high-pressure extinguishing agent flow scenarios.
Innovation Solution
A chamber in the extinguishing lance is fluidly connected to an opening in the piston via a check valve, allowing extinguishing agent to fill and exert a hydraulic force on the piston, maintaining the penetration unit in the end position, preventing recoil and ensuring secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the penetration unit is designed to be long to provide enough openings for sufficient extinguishing agent transport, then the extinguishing agent flow is improved, but the holding force becomes insufficient and the lance can be unintentionally removed
Solution Approach 1:
The invention converts the harmful recoil force caused by extinguishing agent flow into a beneficial holding mechanism. The check valve allows extinguishing agent to fill the chamber, creating hydraulic pressure that pushes the piston forward, generating a holding force that secures the penetration unit in the wall. This transforms the previously harmful effect (recoil force causing removal) into the useful effect (hydraulic force providing secure attachment).
Solution Approach 2:
The invention employs hydraulic principles by using liquid extinguishing agent under pressure to fill a chamber and exert force on a piston. The hydraulic force generated by the incompressible liquid extinguishing agent provides a reliable holding force that secures the penetration unit in the end position, solving the problem of insufficient mechanical holding force.
2Reliability
If a check valve opens towards the chamber, then leakage from the chamber is prevented, but the device complexity increases
Solution Approach 1:
The check valve is designed to automatically open and close based on pressure differential without external control. When extinguishing agent flows into the chamber, the pressure differential automatically opens the valve to fill the chamber; when pressure equalizes or reverses, the valve automatically closes to prevent leakage. This self-regulating mechanism provides reliable leakage prevention without requiring complex external control systems.
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 provides a reliable and secure attachment of the extinguishing lance to the wall by utilizing the hydraulic force of the extinguishing agent, preventing unintentional removal and ensuring effective delivery of the extinguishing agent.
Implementation Method 1
a check valve opening in the direction of the chamber is located in the connection
Implementation Method 2
the chamber is filled with extinguishing agent and the extinguishing agent acts on the piston in such a way that the penetration unit with the piston is held substantially in the end position
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a fire extinguishing lance (1) with a mounting unit (2) for attaching the fire extinguishing lance (1) to a wall (4), with a penetration unit (3) consisting of a piston (301) and a blade (303) for penetrating the wall (4), wherein the penetration unit (3) is displaceably arranged in a cylinder (200) along a main direction of movement (5) between a starting position and an end position, and the penetration unit (3) with the piston (301) and the blade (303) can be brought into the end position for penetrating the wall (4), in which the penetration unit (3) is arranged at least partially beyond a penetration plane (6) as seen from the cylinder (200), characterized in that the piston (301) delimits a chamber (206) in the cylinder (200), which is fluid-connected via a connection (V) to an opening (304) in the piston (301).wherein the opening (304) connects the penetration unit (3) and an extinguishing agent supply line (101) in the end position, wherein when extinguishing agent flows in, the chamber (206) is filled with extinguishing agent and the extinguishing agent acts on the piston (301) in such a way that the penetration unit (3) is held with the piston (301) essentially in the end position.