Hydraulic Pressure Test Device Segmentation
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Solution Overview
Problem
Existing pressure test devices for deep-sea submersibles struggle to accurately simulate complex pressure environments, particularly internal and external pressures, and dynamic pressures on closure heads, with limitations in sealing, pressure control, and test cost due to the need for thick steel plates.
Innovation Solution
A complex pressure environment test device featuring a hydraulic control system and test table with multiple valves and pressure gauges, allowing for independent control of internal and external pressures, and dynamic pressure simulation without the need for thick steel plates, enabling precise pressure regulation and real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uniform water pressure distribution method is used to simulate pressure on closure head, then simulation accuracy of external pressure is improved, but device complexity and test cost increase due to requirement of thick steel plates for sealing
Solution Approach 1:
The patent divides the pressure testing system into separate inner and outer cavity chambers, each with independent sealing and pressurization capabilities. This segmentation allows the closure head to be tested for internal pressure, external pressure, and combined pressures independently, eliminating the need for a single complex thick steel plate sealing structure while maintaining simulation accuracy.
Solution Approach 2:
The patent introduces a removable sealing plate as an intermediary component between the closure head and the test chamber. This sealing plate can be easily installed and removed, replacing the permanent thick steel plate structure. It provides effective sealing for pressure testing while being lightweight and reusable, thus reducing device complexity and test costs.
2Measurement precision
If uniform water pressure distribution method is used, then external pressure simulation is improved, but ability to simulate internal pressure and complex changed water pressure deteriorates
Solution Approach 1:
The test device is segmented into independent inner and outer cavity systems, each with separate water inlets, outlets, and pressurization mechanisms. This allows the system to independently apply internal pressure, external pressure, or both simultaneously, enabling simulation of various pressure scenarios including dynamic changed pressures that cannot be achieved with uniform water pressure distribution alone.
Solution Approach 2:
The patent implements dynamic pressure control through independent pressurization systems for inner and outer cavities, allowing real-time adjustment of pressure differentials. The system can simulate complex changed water pressures by dynamically controlling the pressure in each cavity separately, enhancing adaptability for testing under varying pressure conditions.
3Reliability
If thick steel plates are used to seal the bottom of closure head, then pressure simulation capability is improved, but test preparation time and cost increase
Solution Approach 1:
The patent uses a removable sealing plate as an intermediary component that provides reliable pressure sealing without requiring permanent thick steel plate attachments. This sealing plate can be quickly installed and removed, dramatically reducing test preparation time while maintaining sealing reliability throughout the pressure testing process.
Solution Approach 2:
The sealing plate is designed as a reusable component that can be recovered and reused across multiple tests. Instead of using disposable or permanently attached thick steel plates, the sealing plate is discarded into the test chamber during testing and then recovered afterward for reuse, reducing both preparation time and material costs while maintaining reliable sealing.
4Strength
If thick steel plates are used for sealing, then pressure containment is improved, but overall mass of closure head increases making placement and removal difficult
Solution Approach 1:
The removable sealing plate serves as a lightweight intermediary that provides effective pressure containment without the excessive weight of thick steel plates. This sealing plate is sufficient for containing test pressures while being light enough to allow easy placement and removal of the closure head, solving the weight problem while maintaining pressure containment strength.
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
Enables accurate simulation of internal, external, and dynamic pressures on closure heads, improving test safety and reducing costs by eliminating the need for thick steel plates, while allowing for intuitive observation of pressure effects through an observation window.
Implementation Method 1
the hydraulic control system includes a watering hydraulic pump, a pressurizing hydraulic pump, and a pilot-operated overflow valve
Implementation Method 2
the first pilot-operated pressure regulating valve is separately connected to a first remote pressure regulating valve and a first one-way valve
Implementation Method 3
One type is uniform water pressure distribution, which is mainly placing, by sealing a bottom of a closure head, the entire closure head inside a pressure well full of water, and simulating a pressure on the closure head through watering
Data Source
AI summary
A complex pressure environment test device, comprising a test table and a hydraulic control system. The test table comprises a base for fastening a closure head under test, and an outer cover; the base has water inlets and outlets. The hydraulic control system comprises a watering hydraulic pump, a pressurizing hydraulic pump, and a pilot-operated overflow valve; the watering hydraulic pump is separately connected to a first two-position two-way valve and a second two-position two-way valve; the second two-position two-way valve is connected to a second one-way valve; the second one-way valve is separately connected to a water inlet and a first pilot-operated pressure regulating valve; the first pilot-operated pressure regulating valve is separately connected to a first remote pressure regulating valve and a first one-way valve. There is also a hydraulic circuit is present and used for testing.