Pneumatic Double-Acting Steam Engine Model Transparent Teaching Instrument Physics Experiment
Hero Section: The Ultimate Classroom Powerhouse
Physics isn't meant to be read; it's meant to be seen. This Pneumatic Double-Pushing Steam Engine Model is a massive, transparent teaching instrument designed to make the invisible forces of thermodynamics visible. Weighing in at 2kg and measuring nearly 40cm long, it is a commanding presence on any lab bench. Connect it to an air source, and watch as the reversing valve directs airflow, driving the massive 68mm piston back and forth. It’s a shocking, high-impact demonstration of mechanical power that turns abstract theory into an unforgettable visual lesson.
Why Choose This Teaching Instrument?
- Total Transparency: Unlike enclosed metal engines, this model features a transparent cylinder, air chamber, and air passages. Students can see exactly how the steam (or air) enters, pushes the piston, and exhausts, leaving no "dead angles" in their understanding.
- Double-Acting Power: This is a "double-pushing" engine. The reversing valve controls the flow to push the piston from both ends of the cylinder. This demonstrates advanced engine efficiency and torque generation compared to simple single-acting models.
- Adjustable Performance: It features a simulated steam pressure adjustment mechanism. This allows you to throttle the airflow and control the engine's speed, teaching students about pressure regulation and engine governance.
- Heavy-Duty Stability: Built on a solid bottom plate, this instrument is designed for the classroom environment. It is stable, robust, and easy to place, ensuring safe demonstrations year after year.
Technical Highlights: Engineering Insight
- Reversing Valve Logic: The core of this engine is the airflow reversing valve. It mechanically switches the air inlet and exhaust ports in perfect sync with the piston's position, a fundamental concept in steam locomotive design.
- Large-Scale Mechanics: With a piston diameter of 68mm and a stroke of 54mm, the movements are large and slow enough to be easily followed by the eye, yet powerful enough to impress.
- Safety Speed Limiter: Designed for educational safety, the instrument operates at a safe speed of ≤600 r/min, preventing dangerous over-speeding while still providing a dynamic visual effect.
Specifications
- Type: Pneumatic Double-Acting Steam Engine Model
- Material: Metal + Transparent Plastic
- Piston Diameter: 68mm | Stroke: 54mm
- Dimensions: 395 x 140 x 230 mm
- Weight: 2000g (Heavy Duty)
- Safety Speed: ≤600 r/min
- Power Source: External Air Source (Not Included)
- Packing: Protective Carton Box
Usage Scenario: The Physics Lab
The students gather around the lab bench. You connect the small air compressor to the engine. You open the valve. Hiss-thump-hiss-thump. The giant piston begins to slide inside the clear cylinder. You point out the reversing valve flipping back and forth. "See how the air pushes it left, then right?" you ask. The concept of double-acting cylinders clicks instantly. It’s the kind of lesson they will remember for the rest of the semester.
Important Tips from the Expert
- Air Source Required: This is a pneumatic model. It requires a small air compressor or air pump to run. It simulates steam but runs cleanly on compressed air.
- Maintenance: After use, wipe down the transparent parts to keep them clear. Ensure the moving joints are kept clean of dust to maintain smooth operation.
- Educational Focus: This is primarily a teaching aid. While robust, it is designed for demonstration and observation, not for driving heavy external loads.
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