Remotely Actuated Tank Hatch With Inflatable Bladder Seal
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Solution Overview
Problem
Existing remotely operated hatch systems for tanks are prone to leaks, require costly and time-consuming modifications, are complex to install, and can obstruct tank-filling equipment due to vertical opening mechanisms.
Innovation Solution
A remotely operated hatch system with a hinge assembly, spring members, and an inflatable bladder that allows the hatch to pivot between open and closed positions without obstructing equipment, while maintaining a positive seal through catches and pneumatic control for safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a remotely operated hatch system is implemented, then operator safety is improved and manual operation hazards are eliminated, but the system becomes more complex and expensive to install
Solution Approach 1:
The patent replaces manual mechanical operation with a remotely operated system that uses an inflatable bladder to actuate the hatch. The operator controls the hatch from ground level through remote inflation/deflation, eliminating the need to manually climb onto the tank and operate mechanical latches or handles, thus resolving the contradiction between operator safety and system complexity
Solution Approach 2:
The patent employs pneumatic principles by using an inflatable bladder to provide the force needed to open and close the hatch. This pneumatic actuation mechanism simplifies the overall system compared to complex mechanical linkages or motorized systems, achieving remote operation while maintaining relatively simple system architecture
2Device complexity
If the hatch opens vertically, then the sealing mechanism is simplified, but the hatch obstructs tank-filling equipment
Solution Approach 1:
The patent changes the hatch opening direction from vertical (upward) to horizontal (sideways). The hinge assembly allows the hatch to pivot horizontally away from the tank opening, clearing the path for filling equipment while maintaining an effective sealing mechanism through the horizontal pivot action, thus resolving the contradiction between sealing simplicity and filling efficiency
3Extent of automation
If preexisting automated hatch systems are used, then remote operation is achieved, but significant modification is required which is costly and time-consuming
Solution Approach 1:
The patent divides the hatch system into separate functional components: the hatch cover, the hinge assembly, and the inflatable bladder. This segmentation allows each component to be independently manufactured and installed, simplifying the retrofit process on existing tanks and reducing overall installation complexity and cost while maintaining remote operation capability
Solution Approach 2:
The inflatable bladder serves multiple functions: it provides the actuating force to open the hatch, maintains pressure to keep the hatch sealed when closed, and can be controlled remotely. This multi-functionality reduces the number of separate components needed, simplifying installation and reducing costs compared to systems that require separate actuators, seals, and control mechanisms
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 system provides a safe, leak-free, and efficient means of opening and closing tank hatches remotely, reducing installation complexity and costs, and ensuring unobstructed tank filling by allowing the hatch to swing away from the opening.
Implementation Method 1
An inflatable bladder may be positioned between the upper frame and the hatch. Inflating the bladder overcomes the spring pressure and urges the hatch into tight contact with the opening of the tank.
Implementation Method 2
A plurality of spring members on the upper frame are configured to urge the hatch upward and away from the tank opening.
Data Source
AI summary
A remotely activated tank hatch system includes an upper frame and a lower frame joined by a hinge assembly. The lower frame is coupled to a collar of an opening of a tank and a hatch is coupled to the upper frame. The hinge assembly allows the upper frame to pivot the hatch between an open and closed position. The lower frame includes at least one catch to receive an edge of the hatch, when the hatch is closed. Spring members on the upper frame urge the hatch toward the upper frame so that the hatch may be swung away from the opening. Inflating a rubber bladder positioned between the upper frame and hatch overcomes the spring pressure and urges the hatch into tight contact with the collar. The hatch system includes a remote control for inflating the bladder and opening and closing the hatch.