The Pneumatic Rubber Dam, also known as an Air Shield Dam, is an advanced hydraulic structure that combines:
- Steel shield panels (overflow barrier surface)
- High-pressure inflatable rubber airbag (lifting support system)
- Intelligent control & monitoring system
Unlike traditional inflatable rubber dams that rely solely on membrane deformation, the pneumatic shield system uses an airbag to lift steel panels, forming a rigid overflow crest when inflated.
When deflated, the shield panels rotate downward and lie flat, restoring full flood discharge capacity.
Structural Configuration
The system consists of:
- Steel shield panels
- Supporting inflatable airbag
- Anchoring structure
- Inflation / deflation system
- Intelligent automation control system
- Side sealing system
The lifting motion is powered by compressed air, allowing rapid response and accurate crest elevation control.
Core Technical Advantages
1️⃣ High-Strength Anchoring System
- The wedge-type anchoring structure provides strong fixing force and reliable sealing performance.
- The shield panel and airbag are anchored together, ensuring synchronized movement during lifting and lowering while reducing friction and long-term wear.
2️⃣ Reinforced Steel Shield Design
- The shield panel features a large circular shaft base and bent top edge structure.
- This design improves overall rigidity, enhances resistance to water pressure, reduces deformation risk, and improves long-term durability.
- The bent top also helps prevent ice formation in cold climates.
3️⃣ Durable Multi-Layer Airbag
- The supporting airbag is constructed with an airtight inner rubber layer, high-strength synthetic fiber reinforcement, and weather-resistant EPDM outer rubber.
- It offers excellent pressure resistance, aging resistance, and reliable performance in harsh environments, including low-temperature regions.
4️⃣ Intelligent Automation Control
- The system integrates inclination sensors, pressure monitoring, and PLC-based control.
- It supports automatic, manual, and emergency deflation modes, allowing precise height adjustment, over-pressure protection, and safe operation even during power failure.
Simple Technical Specification
|
Item |
Specification |
|
Product Type |
Pneumatic Rubber Dam (Air Shield Dam) |
|
Structure |
Steel Shield + Inflatable Airbag |
|
Lifting Medium |
Compressed Air |
|
Control Mode |
Automatic / Manual / Emergency |
|
Height Range |
Custom Design (0–6m typical) |
|
Temperature Resistance |
Down to -50°C (optional design) |
|
Automation |
PLC + Angle & Pressure Sensors |
|
Installation Period |
Project-based |
|
Annual Production Capacity |
15,000㎡ |
Typical Application Areas
- Urban flood control projects
- River ecological improvement works
- Hydropower diversion systems
- Municipal water regulation
- Cold-region hydraulic engineering
About Our Company
Jiangsu Yangzhou Heli Rubber Products Co., Ltd.
Established in 1964, Jiangsu Yangzhou Heli Rubber Products Co., Ltd. is a professional manufacturer of inflatable rubber dams, pneumatic shield dams, and engineered rubber airbag systems.
Our company operates a 50,000㎡ production facility with 380 employees and a dedicated technical team. It holds 10 invention patents and 52 utility model patents and participates in the development of national technical standards for pneumatic dam systems.
With over 50 years of manufacturing experience, Heli Rubber provides:
- Reliable product quality
- Customized engineering solutions
- Installation guidance and technical support
- Responsive after-sales service
We serves river regulation, flood control, hydropower, and water management projects with a strong focus on performance, durability, and long-term operational stability.
FAQ
Q1: What is the difference between a pneumatic rubber dam and a traditional inflatable rubber dam?
A: A pneumatic rubber dam uses a steel shield panel lifted by an airbag, creating a rigid overflow crest. Traditional inflatable dams rely solely on membrane inflation.
Q2: Is the system suitable for cold climates?
A: Yes. The airbag material and shield design support operation in temperatures as low as -50°C (customized configuration).
Q3: Can the crest height be adjusted?
A: Yes. The intelligent control system allows precise height adjustment within the design range.
Q4: What happens during power failure?
A: The system includes manual and emergency deflation functions to ensure safe operation.
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