CN202595147U - Biogas collecting equipment with double-air-bag buoyancy water seal - Google Patents

Abstract

The utility model discloses biogas collecting equipment with a double-air-bag buoyancy water seal. The biogas collecting equipment comprises a fermenting tank (1), an annular water groove (2), air bags (3), a sealing cover (4) and a pump, wherein the annular water groove (2) is formed in the fermenting tank (1); two annular air bags (3) are fixed on the annular water groove (2); the opening of the semispherical sealing cover (4) is hermetically connected with the contact of the two air bags (3); the air suction port of the pump (5) is communicated with the inside of the sealing cover (4) through a pipeline; a negative pressure meter (6) is arranged on a pipeline between the pump (5) and the sealing cover (4); the exhaust port of the pump (5) is communicated with the inside of the fermenting tank (1) through a pipeline; and the exhaust port of the pump (5) is connected with a desulfurizer (7) through a pipeline. The biogas collecting equipment has the advantages of safety, reliability and high gas yield.

Description

Double air bag buoyancy water seal biogas harvesting equipment

technical field

The utility model relates to a biogas collection device, in particular to a biogas harvesting device with double air bag buoyancy water seal.

Background technique

With the development of my country's biogas science and technology and the promotion of rural household biogas, biogas equipment has been widely used. However, the existing biogas equipment may explode when the pressure is too high, endangering people's safety. In the case of insufficient gas pressure in the existing biogas equipment, biogas slurry will be pumped out, resulting in blockage. In the existing biogas equipment, crusts are easily produced in the fermentation tank, resulting in low biogas production rate.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a double-airbag buoyancy water-sealed biogas harvesting device that is safe, reliable, and high in gas production rate.

The purpose of this utility model is achieved through the following technical solutions:

Double-airbag buoyancy water-sealed biogas harvesting equipment, which includes a fermentation tank, an annular water tank, an air bag, a sealing cover and a pump. The annular water tank is set in the fermentation tank. The opening is sealed and connected with the contact of the two airbags. The suction port of the pump communicates with the inside of the sealing cover through a pipeline. A negative pressure gauge is installed on the pipeline between the pump and the sealing cover. The interior of the fermentation tank is connected, and the exhaust port of the pump is connected to the desulfurizer through a pipeline;

It also includes an air storage bag, which is connected to the exhaust port of the pump through an electric control valve;

It also includes a controller and an air pressure probe arranged on the top of the sealing cover, and the pump, the air pressure probe, and the electric control valve are electrically connected with the controller.

The negative pressure gauge comprises a bag body and a U-shaped tube communicating with the bottom of the bag body.

The air storage bag is connected with the exhaust valve through a pipeline, and the pipeline between the air storage bag and the exhaust valve is communicated with the pipeline between the sealing cover and the pump through a manual valve.

The utility model has the advantages of:

1. It can be effectively sealed and there is no pressure requirement for biogas recovery, no explosion, safe and reliable;

2. Equipped with a negative pressure gauge, the pump will inhale air through the negative pressure gauge when the pressure in the sealing cover is insufficient, avoiding the situation of inhaling biogas slurry or tearing the sealing cover;

3. Pneumatic separation technology is used to send the generated biogas to the fermentation tank through the pump, so that the biogas slurry in the fermentation tank can circulate and vibrate, avoiding the occurrence of crusting of the biogas slurry, and separating the gas attached to the biogas residue from the biogas residue. Increased gas production rate.

Description of drawings

Fig. 1 is the structural representation of the utility model

In the figure, 1-fermentation tank, 2-ring tank, 3-air bag, 4-sealing cover, 5-pump, 6-negative pressure gauge, 7-desulfurizer, 8-air storage bag, 9-electric control valve, 10 -air pressure probe, 11-controller, 12-exhaust valve, 13-manual valve.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following description.

As shown in Figure 1, the double-airbag buoyancy water-sealed biogas harvesting equipment includes a fermentation tank 1, an annular water tank 2, an air bag 3, a sealing cover 4 and a pump 5, and the annular water tank 2 is arranged in the fermentation tank 1 and the annular water tank 2 Water is stored so that part of it can sink below the liquid surface of the biogas slurry. Two annular air bags 3 are fixed on the annular water tank 2, so that the annular water tank 2 can float on the biogas slurry. The opening of the hemispherical sealing cover 4 is in contact with The contact points of the two airbags 3 are hermetically connected. The suction port of the pump 5 communicates with the inside of the sealing cover 4 through a pipeline, a negative pressure gauge 6 is arranged on the pipeline between the pump 5 and the sealing cover 4, and the exhaust port of the pump 5 communicates with the inside of the fermentation tank 1 through a pipeline , the exhaust port of the pump 5 is connected to the desulfurizer 7 through a pipeline, and the desulfurizer 7 is connected to the gas-consuming equipment; it also includes an air storage bag 8, which is connected to the exhaust port of the pump 5 through an electric control valve 9 ; It also includes a controller 11 and an air pressure probe 10 arranged on the top of the sealing cover 4, the pump 5, the air pressure probe 10, and the electric control valve 9 are electrically connected to the controller 11. The negative pressure gauge 6 comprises a bag body and a U-shaped tube communicating with the bottom of the bag body, and water is housed in the U-shaped tube. The air storage bag 8 is connected to the exhaust valve 12 through a pipeline, and the pipeline between the air storage bag 8 and the exhaust valve 12 communicates with the pipeline between the sealing cover 4 and the pump 5 through a manual valve 13 .

The working principle of the utility model is as follows:

The pump 5 works to extract the biogas in the sealing cover 4, and then sends it to the gas-consuming equipment through the desulfurizer 7; when the air pressure probe 10 detects that the air pressure in the sealing cover 4 is too high, the controller 11 controls the electric control valve 9 to open, and the redundant The biogas enters the gas storage bag 8 for storage, and the biogas that cannot be stored in the gas storage bag 8 is discharged through the exhaust valve 12; When the water in the U-shaped pipe enters the bag body, the pump 5 sucks air through the negative pressure gauge 6.

Claims (3)

1. two air bag buoyancy water seal biogas equipment of gathering; It is characterized in that: it comprises fermentation vat (1), annular water tank (2), air bag (3), sealing cover (4) and pump (5); Annular water tank (2) is arranged in the fermentation vat (1); Be fixed with two annular air bags (3) on the annular water tank (2); The contact position of the opening part of hemispheric sealing cover (4) and two air bags (3) is tightly connected, and the suction opening of pump (5) is through the internal communication of pipeline and sealing cover (4), and the pipeline between pump (5) and the sealing cover (4) is provided with depressimeter (6); The venting port of pump (5) is through the internal communication of pipeline and fermentation vat (1), and the venting port of pump (5) is connected with devulcanizer (7) through pipeline;

It also comprises gas-storing bag (8), and gas-storing bag (8) is connected with the venting port of pump (5) through electrically-controlled valve (9);

It also comprises unit (11) and is arranged at the air pressure probe (10) at sealing cover (4) top that pump (5), air pressure probe (10), electrically-controlled valve (9) are electrically connected with unit (11).

2. according to claim 1 pair of air bag buoyancy water seal biogas equipment of gathering is characterized in that: described depressimeter (6) comprises bag and the U type pipe that is communicated with the bag bottom.

3. according to claim 1 pair of air bag buoyancy water seal biogas equipment of gathering; It is characterized in that: described gas-storing bag (8) is connected with vent valve (12) through pipeline, and the pipeline between gas-storing bag (8) and the vent valve (12) is communicated with through manual valve (13) with pipeline between sealing cover (4) and the pump (5).

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