What is the difference between a double membrane gas cabinet and a single membrane gas cabinet?

There are significant differences between double membrane gas holders and single membrane gas holders in many aspects. The following is a detailed explanation of their main differences:

1. Structure and composition

。Double membrane gas cabinet: It is composed of bottom membrane, inner membrane, outer membrane, constant pressure control cabinet, safety protector, etc. The inner membrane space is used to store gas, while the space between the outer membrane and the inner membrane is used as a pressure regulating space, which makes the double membrane gas cabinet have better pressure control capabilities.

。Single-membrane gas cabinet: It has only one membrane structure and no outer membrane and pressure regulating space. Therefore, its structure is relatively simple and its pressure regulation ability is relatively weak.

2. Functions and applications

。Double membrane gas cabinet:

。It is suitable for scenarios that require higher pressure control accuracy and larger storage capacity, such as large biogas power stations, industrial gas storage, etc.

。The design allows it to make full use of the space inside the cabinet, and the gas utilization rate is higher, and 100% output utilization can be achieved.

。The material has a long anti-corrosion life, usually more than 30 years, and some can even reach 50 years.

。With higher safety performance, its inner membrane is always in pressure balance and will not leak stored gas. Even if the outer membrane leaks, it only leaks air and poses no safety threat.

Single membrane gas cabinet:

。It is more suitable for small biogas projects, agricultural waste treatment and other scenarios.

。The cost is relatively low and it is suitable for situations where storage capacity and pressure control accuracy are not required.

。Anti-corrosion life may be short and require periodic replacement or maintenance.

。Safety performance may be low and there is a risk of gas leakage.

3. Other differences

。Floor space and investment: Although the initial investment of a double-membrane gas holder may be slightly higher, it has a small footprint, simple structure, short construction period, and better economic benefits in the long run. The initial investment of a single-membrane gas holder may be lower, but it may require more floor space, and subsequent maintenance costs may be higher.

。Appearance: Double-membrane gas cabinets are generally 76% spherical, standing in the middle of the cylindrical tank, complementing each other and having a richer appearance. The appearance of a single-membrane gas holder may be relatively simple.
There are significant differences between double-membrane gas holders and single-membrane gas holders in terms of structure, function, usage scenarios, gas utilization, anti-corrosion and lifespan, safety, investment and floor space, and aesthetics. When choosing, you need to choose the appropriate gas holder type based on specific usage needs and scenarios.