The double-membrane gas storage cabinet is mainly composed of the bottom membrane, inner membrane, outer membrane, constant pressure control cabinet, protector, and some control equipment and auxiliary materials. Made from specially processed polyester material, it boasts resistance to ultraviolet radiation and various microorganisms, high fire resistance, and complies with European standards.

The bottom film is primarily used for basic sealing, offering advantages such as corrosion and leakage prevention, simplified installation, and a long service life that traditional infrastructure cannot achieve. The inner film is designed and made into a spherical cross-section that connects with the bottom film or the fermentation tank mouth, forming an independent, sealed space for storing various gases. The outer film maintains a constant air pressure output, protecting the inner film, and its cross-section is connected to the edge of the bottom film or the fermentation tank mouth. Our company's self-designed and manufactured automated gas collection and constant pressure system creates an independent storage space with a constant pressure between the inner and outer films, serving as a stable gas holder and maintaining constant pressure.

Application Range:

A variety of neutral gases storage, including biogas, air, carbon dioxide, oxygen, etc.

Operating Principle:

The bottom, inner, and outer membranes of the double-membrane gas storage cabinet together create two compartments. The inner compartment serves as the storage space for various gases, while the space between the inner and outer membranes acts as a pressure-regulating space. As the stored gas increases, the inner membrane bulges, and the control equipment releases pressure-regulating air from the outer membrane to free up capacity. When the inner compartment has less stored gas, the control equipment injects air into the pressure-regulating layer to balance the pressure inside the cabinet and stabilize the stiffness of the outer membrane. (That is, using a soft spherical shape as the gas storage cabinet, when the volume of stored gas decreases, the control equipment automatically inflates air to fill the gap, and when the stored gas increases, the protector releases air to balance the pressure. To prevent gas mixing, the stored gas and air are isolated using the inner membrane.)

Raw Materials:

The double-membrane gas storage cabinets use imported German film materials, which are made of specially processed polyester material and coated with polyvinyl chloride on both sides. They possess resistance to ultraviolet rays and various microorganisms, are highly wear-resistant, and the seams are fused using HF technology. The main material of the film is PVDF (polytetrafluoroethylene), offering functions such as corrosion resistance, anti-aging, anti-microbial, and UV resistance. Additionally, they have a fire rating of B1 level. The tensile strength of the film exceeds 4000N/5cm, and the inner membrane of the gas storage cabinet is a corrosion-resistant product with a service life of 25 years or more.