Fire Sprinkler Pipe Sleeve Joint With Activatable Bonding
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Solution Overview
Problem
Existing pipe arrangements for fire extinguishing systems face challenges with lengthy assembly times and ineffective connecting agents due to premature adhesive application, which can render the connection ineffective.
Innovation Solution
A pipe arrangement with a weldable connecting means applied to the sleeve body and pipe sections, activated shortly before or after insertion, forming a welded joint with a conically extending connecting surface for improved adhesive effect, and a removable protective layer to maintain the connecting means in an inactive state until activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied to the outer surface of the pipe end before insertion into the sleeve, then a material connection can be achieved, but the adhesive may be prematurely removed by the snap ring during insertion, rendering the connection ineffective
Solution Approach 1:
The adhesive is applied to the pipe end before insertion, but the critical innovation is that the snap ring is designed with a recess that receives the adhesive, preventing its premature removal. This preliminary positioning of the adhesive in a protected state ensures it remains effective for bonding when the pipe is fully inserted.
Solution Approach 2:
The recess in the snap ring acts as an intermediary structure that temporarily holds the adhesive in place during the insertion process. This intermediate holding mechanism prevents the adhesive from being displaced or removed, ensuring it remains available to form the material connection between the pipe and sleeve.
2Strength
If adhesive surfaces are cleaned and subjected to pre-treatment steps to ensure effective material connection, then bonding strength is improved, but assembly time is significantly increased
Solution Approach 1:
The pipe ends are pre-treated with adhesive application before insertion into the sleeve. The adhesive is applied in advance and held in position by the snap ring recess, allowing the bonding process to occur automatically during insertion without requiring additional time for surface preparation or adhesive application at the assembly site.
Solution Approach 2:
The system is designed so that the adhesive application and positioning is performed as a self-contained preliminary step. The snap ring recess automatically holds the adhesive in the correct position during insertion, eliminating the need for additional manual intervention or time-consuming pre-treatment steps at the assembly location.
3Productivity
If the connecting means is activated in advance, then the connection can be formed quickly, but the connecting means loses its adhesive properties during transport and storage
Solution Approach 1:
The adhesive is applied to the pipe end in advance during manufacturing or pre-assembly, but it is kept in an inactive or protected state by the snap ring recess. The adhesive maintains its adhesive properties during transport and storage because it is protected from contamination and premature activation, yet is positioned ready for immediate bonding upon insertion.
Solution Approach 2:
The snap ring recess provides protective cushioning for the adhesive during transport and storage. This preliminary protection prevents the adhesive from losing its effectiveness by shielding it from environmental factors, contamination, and mechanical displacement, ensuring it remains reliable when needed for bonding.
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
This solution significantly reduces assembly time and ensures a strong, reliable mechanical and sealing connection between the pipe sections and sleeve body, enhancing the functional reliability of the fire extinguishing system.
Implementation Method 1
the connecting means is set up to form a welded joint with activation between the sleeve body and the pipe sections
Implementation Method 2
forming a welded joint with a conically extending connecting surface for improved adhesive effect
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a pipe arrangement (1, 1', 1",1'') of a piping system of a fire extinguishing system with interconnected media-conducting pipe sections, with a sleeve body (2, 2', 2"), which has at least a first end section (4) and a second end section (4'), in particular two pipe sections (6, 6'), wherein each pipe section (6, 6') is received at an end section (4, 4') of the sleeve body (2, 2', 2"), and a sealing element (12, 12', 12") arranged between an inner surface (8) of the sleeve body (2, 2', 2") and an outer surface (10) of the pipe section (6, 6'), characterized by a connecting means (14, 14') arranged between the inner surface of the sleeve body (2, 2', 2") and the outer surface of the pipe section (6, 6').According to the invention, it is proposed that the connecting means (14, 14') has a transport and/or storage state in which relative movement between the pipe sections (6, 6') and the sleeve body (2, 2', 2") is possible, and that it can be brought from the transport and/or storage state into a connection state by means of activation, wherein the connecting means (14, 14') in the connection state is configured to connect an outer surface (10) of the respective pipe end with the inner surface (8) of the sleeve body (2, 2', 2") in a materially bonded manner.