Emergency Valve Structure for Faster Train Pipe Release
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Solution Overview
Problem
Existing railway wagon braking systems require a long time to replenish pressurized air after emergency braking, leading to inefficiencies in railway transportation and high energy consumption.
Innovation Solution
An emergency valve with an emergency accelerated release function is introduced, comprising an emergency valve body and an inflation valve. The inflation valve includes a first valve core and a second valve core, which are designed to create a pressure difference to accelerate the inflation of train pipes using pressurized air from the brake cylinder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is supplied to the whole train only by a locomotive after emergency braking, then the train can be released, but a long time is required and a large amount of energy is consumed
Solution Approach 1:
The patent introduces an intermediate device (emergency valve with accelerated release function) that mediates between the brake cylinder and train pipes. This valve uses the existing pressurized air in the brake cylinder to accelerate the inflation of train pipes, acting as a mediator that transfers and amplifies the air supply capability from the brake system to the train pipes, thereby reducing release time without requiring additional external air supply.
Solution Approach 2:
The system enables self-service by utilizing the pressurized air already present in the brake cylinder (which was used for braking) to perform the reverse function of inflating train pipes. The emergency valve automatically directs this stored pressurized air to accelerate the release process, making the system self-sufficient and eliminating the need for external air supply from the locomotive during the release phase.
2Productivity
If air is supplied to the whole train only by a locomotive after emergency braking, then the train can be released, but a large amount of energy is consumed
Solution Approach 1:
The patent applies the discarding and recovering principle by capturing and reutilizing the pressurized air that remains in the brake cylinder after emergency braking. Instead of letting this pressurized air be wasted or requiring new air supply from the locomotive, the system recovers this stored energy in the form of pressurized air and uses it to accelerate the release process, thereby reducing energy consumption from the locomotive.
3Loss of time
If the emergency valve is designed with multiple valve cores and cavities to accelerate release, then the release time is reduced, but the device complexity increases
Solution Approach 1:
The emergency valve is designed with multi-functionality, where a single valve body incorporates multiple valve cores (first and second valve cores) and multiple cavities (driving cavity, inflation cavity, emergency cavity) that serve different functions. The first valve core controls the driving cavity for actuation, the second valve core controls the inflation cavity for air delivery, and the emergency cavity handles the accelerated release. This integration of multiple functions into one valve structure achieves rapid release while avoiding the need for separate components for each function.
Solution Approach 2:
The valve structure employs a nested arrangement where the first valve core and second valve core are positioned within the same valve body, and the driving cavity, inflation cavity, and emergency cavity are arranged in a nested or closely integrated configuration. This nesting allows the multiple functional chambers and valve elements to share space efficiently, reducing overall structural complexity while maintaining the accelerated release capability.
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 the time required to replenish pressurized air in train pipes after emergency braking, enhancing railway transportation efficiency and reducing energy consumption.
Implementation Method 1
since the first driving cavity is in communication with the train pipe through the emergency cavity and the second driving cavity is in communication with the emergency chamber, the inflation speed of the first driving cavity is greater than the inflation speed of the second driving cavity, and thus the pressure of the first driving cavity is greater than the pressure of the second driving cavity; and driven by the pressure difference, the first valve core pushes the second valve core away from the air outlet of the inflation cavity
Data Source
AI summary
An emergency valve having an emergency accelerated release function, comprising: an emergency valve body, having an emergency cavity, an air inlet of the emergency cavity being in communication with a train pipe; and an inflation valve, comprising an inflation valve body, a first valve core and a second valve core, wherein the inflation valve body has a driving cavity and an inflation cavity which are spaced apart; the first valve core is movably arranged in the driving cavity and divides the driving cavity into a first driving cavity and a second driving cavity, and the second valve core is movably arranged at an air outlet of the inflation cavity, and an air inlet of the inflation cavity is in communication with a brake cylinder, the air outlet of the inflation cavity is in communication with an air inlet of the first driving cavity, and an air outlet of the first driving cavity is in communication with the emergency cavity, and the second driving cavity is in communication with an emergency chamber; wherein the first valve core has an inflation position at which the second valve core is pushed away from the air outlet of the inflation cavity, and a blocking position at which the second valve core is released.