Double-membrane Gas Holder

Technical Principle


The bottom membrane and the outer membrane jointly form a closed gas storage space. The inner membrane divides the gas holder into a gas storage space and a pressure regulating space.

When the stored gas increases, the inner membrane rises, and the safety protector releases the pressure-regulating air to free up some capacity, allowing the gas to smoothly enter the gas holder. If the inner membrane rises to fill and becomes compressed, the safety protector will release the inner membrane gas protectively. To prevent the endometrium from being compressed and protect it.

When the gas stored in the inner membrane decreases, the inner membrane descends, and the control equipment then injects pressure-regulating air to balance the pressure inside the cabinet. At the same time, it stabilizes the stiffness of the outer membrane to ensure that the stored gas can flow out of the gas holder smoothly.

Double-membrane Gas Storage Cabinet System

Scope of application:
Storage of various neutral gases such as biogas, air, carbon dioxide, oxygen, etc.


Structural composition:
It is mainly composed of the bottom membrane (except for the integrated gas holder), inner membrane, outer membrane, constant pressure control cabinet, safety protector and some control equipment and auxiliary materials. (The equipment composition is shown in the figure.)

Bottom film: Mainly used for foundation sealing to achieve anti-corrosion and anti-seepage that traditional infrastructure cannot reach.

Outer membrane: It forms a pressure regulating chamber, allowing the stored gas to be output at a constant pressure and protecting the inner membrane. The outer membrane is connected to the edges of the inner membrane and the bottom membrane or the opening of the fermentation tank.

Inner membrane: Isolates the stored gas from the outer membrane for pressure regulation.

Control cabinet: It detects the pressure of the gas cabinet and the volume of the inner membrane. It can also integrate numerous information such as the volume of the inner membrane, leakage concentration, and system flow rate as needed. Automatically inject pressure-regulating air according to the pressure;

Safety protector: Air release in the pressure regulating chamber and excessive protective discharge of the inner membrane.

Specification table of Double-Membrane Dry Spherical Gas Storage Tank

Gas storage volume (m²)

The diameter of the sphere D* (m)

The height of the sphere H* (m)

100

6.7

5.4

200

8.2

6.5

300

9.4

75

400

10.2

8.0

500

10.8

8.6

600

11.8

9.5

750

12.5

9.8

1000

13.6

10.2

1500

15.7

12.3

2000

17.3

13.3

2500

18.5

14.4

3000

19.7

15.3

4000

21.8

17.0

5000

23.4

18.2

The airtightness test was completed in the factory

Select the corresponding specification according to the volume size

Double-membrane Gas Storage Cabinet Size Table

Endometrial volume (m³)

Outer membrane volume (m³)

Node diameter (m)

Height of the outer membrane (m)

Diameter of
the sphere
(m)

100

112

5.8

4.6

6.4

200

224

7.3

5.8

8.1

300

336

8.3

6.7

9.3

500

560

9.9

7.9

11.0

600

672

10.5

8.4

11.7

1000

1120

12.4

10.0

13.8

1500

1680

14.2

11.4

15.8

2000

2240

15.6

12.5

17.2

2500

2800

16.9

13.5

18.8

Endometrial volume (m³)

Outer membrane volume (m³)

Node diameter (m)

Height of the outer membrane (m)

Diameter of
the sphere
(m)

3000

3360

17.9

14.4

19.9

4000

4480

19.7

15.8

22.0

5000

5600

21.2

17.0

23.6

6000

6720

22.6

18.1

25.1

7000

7840

23.8

19.0

26.5

8000

8960

24.8

19.9

27.7

10000

11200

26.8

21.5

29.8

15000

16800

30.6

24.6

34.1

20000

22400

33.7

27.0

37.6

Biogas Technology

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