CN201245660Y - Gas collection and gas storage apparatus of methane tank - Google Patents

Abstract

The utility model discloses a gas collection and storage device for a biogas pond, which has a fermentation tank, wherein: a soft cover is buckled on the upper part of the fermentation tank, the soft cover and the fermentation tank form a gas collection and storage chamber, and the soft cover and the fermentation tank The walls are connected by an airtight structure, and the outer cover of the soft cover is provided with a fixed cover. Compared with the prior art, it has the advantages of convenient construction, low cost, high strength, good airtightness, volume can be changed according to the amount of biogas, and is suitable for the application of various types of biogas digesters.

Description

Biogas digester gas collection and storage device

technical field

The utility model belongs to the biogas application technology, in particular to a gas collection and storage device for a biogas pool.

Background technique

As a new type of renewable energy, biogas is an effective use of biomass energy. People have accumulated a certain amount of knowledge and experience in the use of biogas. Most of the common biogas digesters are hydraulic biogas digesters. This kind of biogas digesters has high requirements on the strength and wide airtightness of the pool dome, and the construction is difficult and expensive. The volume of this kind of biogas tank remains unchanged, and the gas storage space and the fermentation space conflict with each other during the use of the biogas tank. Promotional use.

Contents of the invention

In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this utility model is to provide a biogas digester gas collection and storage device with high strength, good airtightness, variable volume according to the amount of biogas, convenient construction and low cost.

In order to achieve the above purpose, the technical solution adopted by the utility model: the biogas tank gas collection and storage device has a fermentation tank, wherein: a soft cover is fastened on the upper part of the fermentation tank, and the soft cover and the fermentation tank form a gas collection and storage chamber. The soft cover is connected with the wall of the fermentation tank in an airtight structure, and the outer cover of the soft cover is provided with a fixed cover.

The air-gathering and storage chamber and the external space are provided with an exhaust pipe, and a pressure relief valve is arranged in the exhaust pipe; The outlet of the air pump is connected with the inlet of the air pump.

The air-tight structure is that the upper part of the fermentation tank wall is provided with an annular water tank along the pool wall, the opening of the soft cover is fastened in the annular water tank, and water for submerging the opening of the soft cover is provided in the annular water tank.

Beneficial effects of adopting the above technical scheme: the biogas tank gas collection and storage device is fastened with a soft cover on the upper part of the fermentation tank wall, the soft cover constitutes the pool dome of the fermentation tank, and the soft cover and the fermentation tank wall form a gas collection and storage The soft cover and the wall of the fermentation tank are connected by an air-tight structure. The soft cover can be opened or retracted according to the amount of gas produced in the fermentation tank, that is, the volume of the gas collection and storage chamber of the biogas tank can be changed according to the amount of biogas, so that the biogas tank The pressure in the gas storage chamber will never be too high, which solves the conflict between the gas storage space and the fermentation space during the use of the biogas digester. The soft cover is made of flexible materials and has a high degree of safety. The outer cover of the soft cover is provided with a fixed cover, which limits the movable space of the soft cover, protects the soft cover from abrasion and sun exposure aging, and effectively prevents the soft cover from breaking. The pressure relief valve automatically discharges under pressure after storing the maximum amount of gas to relieve pressure. When using gas, use the air pump to extract the biogas in the soft cover for use. After the biogas is evacuated, the gas supply pipeline is automatically cut off under the action of the negative pressure control valve. Compared with the prior art, it has the advantages of convenient construction, low cost, high strength, good airtightness, volume can be changed according to the amount of biogas, and is suitable for the application of various types of biogas digesters.

Description of drawings

Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail.

Figure 1 is a schematic structural view of a biogas digester gas collection and storage device.

Detailed ways

As shown in Figure 1, the gas collection and storage device for biogas digesters has a fermentation tank 1, and the upper part of the fermentation tank wall is provided with an annular water tank 3 along the pool wall, and the opening of the soft cover 4 is fastened in the annular water tank 3, and in the ring water tank The inside is filled with water, submerging the opening of the soft cover, so that the soft cover is connected with the wall of the fermentation tank in an airtight structure. The soft cover and the wall of the fermentation tank form a gas collection and storage chamber 6. The soft cover is made of flexible materials. The soft cover can be opened or retracted according to the amount of gas produced in the fermentation tank. Quantity changes. The outer cover of the soft cover 4 is provided with a fixed cover 5 to limit the activity space of the soft cover and prevent the soft cover from breaking. The air-gathering and storage chamber 6 and the external space are provided with an exhaust pipe, and a pressure relief valve 2 is provided in the exhaust pipe. The air-collecting and storage chamber 6 is also provided with an outlet pipe 7, and a negative pressure control valve 8 is arranged in the outlet pipe. , the outlet of the air outlet pipe is connected with the air inlet of the air pump.

Claims (3)

1. A biogas tank gas-collecting and gas-storage device, which has a fermentation tank, is characterized in that: a soft cover is fastened on the upper part of the fermentation tank, the soft cover and the fermentation tank form a gas-gathering and gas storage chamber, and the soft cover and the fermentation tank wall For airtight structure connection, the outer cover of the soft cover is provided with a fixed cover. 2. The biogas tank gas collection and storage device according to claim 1, characterized in that: the gas collection and storage chamber and the external space are provided with an exhaust pipe, and a pressure relief valve is arranged in the exhaust pipe; The air storage chamber is also provided with an air outlet pipe, and a negative pressure control valve is arranged in the air outlet pipe, and the outlet of the air outlet pipe is connected with the air inlet of the air pump. 3. The gas collection and storage device for biogas digesters according to claim 1, characterized in that: the air-tight structure is that the upper part of the fermentation tank wall is provided with an annular water tank along the wall, and the opening of the soft cover is fastened to the annular water tank In the annular water tank, water for submerging the opening of the soft cover is provided.