Fluid Control Valve Installation with Split Housing Sealing
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Solution Overview
Problem
Existing fluid control device installation methods face challenges in maintaining high controllability due to positional deviations and increased size, weight, and cost of construction equipment, particularly when inserting a valve body into a fluid pipe, leading to inefficiencies in fluid control.
Innovation Solution
An installation method and device that utilize a split housing structure with an operation valve device and annular sealing member to ensure precise positioning of the fluid control valve by equalizing pressure on both sides of the valve housing, reducing the required pressing force and support points, and incorporating a movement prevention mechanism to stabilize the housing during fluid pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the operation valve device is connected to the open end portion of the neck portion and the fluid control valve is installed through overlapping connection, then the fluid control valve can be installed in the housing, but the extension stroke increases causing positional deviation and the equipment size and weight increase
Solution Approach 1:
The housing is divided into an upper housing and a lower housing that can be separated. The operation valve device is connected to the opening in the neck portion rather than requiring overlapping connection through the entire length. This segmentation allows the fluid control valve to be installed directly into the lower housing without requiring excessive extension stroke, thereby improving positional accuracy while reducing equipment length.
2Reliability
If the operation valve device is connected in an overlapping state to achieve sealed connection, then the fluid control valve can be installed, but the equipment size increases leading to higher construction costs and excessive load on existing fluid pipes
Solution Approach 1:
The housing is segmented into upper and lower parts that can be separately assembled. The operation valve device connects to the opening in the neck portion of the upper housing, allowing the lower housing to be independently positioned and sealed. This segmentation reduces the overall weight and size of the operation valve device while maintaining reliable sealed connection through the annular sealing member that seals between the lower housing and the fluid control valve.
Solution Approach 2:
An annular sealing member is introduced as an intermediary element to achieve sealed connection between the lower housing and the fluid control valve. This sealing member provides reliable sealing without requiring the operation valve device to be oversized, thereby reducing equipment weight and construction costs while maintaining connection reliability.
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 enhances the positional accuracy and controllability of the fluid control valve, reduces the size and weight of operation valve devices, and minimizes construction costs by shortening the boring stroke and preventing housing movement, thus improving the overall efficiency of fluid control in pipes.
Implementation Method 1
inserting the fluid control valve to a position where a front end of the valve housing exceeds the opening of the neck portion while inner part side and outer part side surrounding the open end portion in a sealed state have the same pressure
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
Provided are an installation method and an installation device for a fluid control device capable of improving controllability of a fluid in a pipe by improving positional accuracy of a valve body inserted into a hole formed in a fluid pipe in a housing and decreasing the size, weight, and cost of construction equipment such as an operation valve device or an installation device of a fluid control valve. Such a method of installing a fluid control device in a continuous flow state, the fluid control device including at least a housing 5 installed in a fluid pipe 1 in a sealed state and a fluid control valve 10 having a valve body 11 and a valve housing 12 insertable into a hole 1b of the fluid pipe 1 formed in the housing 5, includes: installing, at an opening 5b formed in a neck portion 5d of the housing 5, an operation valve device 3 having an operation valve body 31 dividing the inside of the housing 5 in an openable and closeable manner; opening the operation valve body 31 while surrounding an open end portion 5c formed in the neck portion 5d in a sealed state; and inserting the fluid control valve 10 communicating with the inside of the housing 5 in a sealed state from the open end portion 5c to an installation position in which a front end of the valve housing 12 of the fluid control valve 10 exceeds the opening 5b of the neck portion 5d so that an annular sealing member 21 seals a gap between a peripheral surface of the valve housing 12 and a peripheral surface of the neck portion 5d at the installation position.