Double-membrane biogas cabinet with protective structure

Abstract

The utility model relates to the technical field of double-membrane biogas cabinets, in particular to a double-membrane biogas cabinet with a protective structure. According to the technical scheme, the device comprises a base, a bottom film is fixedly installed in the middle of the upper surface of the base, an inner film and an outer film are fixedly installed on the upper surface of the bottom film, the inner film is located in the outer film, a water tank is fixedly installed on one side of the upper surface of the base, and a biogas pipe is fixedly connected to the lower surface of the bottom film; the tail end of the biogas pipe is fixedly connected with a gas inlet valve and a gas outlet valve, the tail ends of the gas inlet valve and the gas outlet valve are fixedly connected to the positions, close to the upper surface and the lower surface, of the inner side of the water tank respectively, and a gas outlet pipe and a gas inlet pipe are fixedly connected to the positions, close to the upper surface and the lower surface, of the outer side of the water tank respectively. The protection devices for isolating fire are arranged at the gas inlet and the gas outlet of the double-membrane biogas cabinet, so that the use safety of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double - membrane biogas tanks, and specifically relates to a double - membrane biogas tank with a protective structure. Background Technique

[0002] A double - membrane biogas tank is a device specifically used for storing biogas. It mainly consists of an inner membrane, an outer membrane, and a bottom membrane. The inner membrane and the outer membrane together form a sealed gas storage space. The inner membrane isolates the stored gas and the outer membrane is used for pressure regulation. The outer membrane forms a pressure - regulating chamber, enabling the inner membrane to output gas at a constant pressure and protecting the inner membrane. The bottom membrane is mainly used for basic sealing, achieving anti - corrosion and anti - penetration effects that traditional infrastructure cannot achieve. This biogas storage structure not only ensures the storage quality of biogas but also effectively prevents biogas leakage, improves storage safety, and also has the advantages of corrosion resistance, long service life, low investment, and small floor area.

[0003] Currently, during the use of the double - membrane biogas tank, there is a lack of a safety protection structure for blocking fire at the gas inlet and outlet, reducing the safety of use. For this reason, we propose a double - membrane biogas tank with a protective structure. Summary of the Invention

[0004] The purpose of the utility model is to provide a double - membrane biogas tank with a protective structure, which has the advantage of setting a protective device for isolating fire at the gas inlet and outlet of the double - membrane biogas tank, improving the safety of equipment use, and solving the problem that during the use of the current double - membrane biogas tank, there is a lack of a safety protection structure for blocking fire at the gas inlet and outlet, reducing the safety of use.

[0005] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A double - membrane biogas tank with a protective structure, including a base. At the middle position of the upper surface of the base, a bottom membrane is fixedly installed. On the upper surface of the bottom membrane, an inner membrane and an outer membrane are fixedly installed, and the inner membrane is located inside the outer membrane. On one side of the upper surface of the base, a water tank is fixedly installed. The lower surface of the bottom membrane is fixedly connected to a biogas pipe. The end of the biogas pipe is fixedly connected to an inlet valve and an outlet valve, and the ends of the inlet valve and the outlet valve are respectively fixedly connected to positions near the upper surface and the lower surface inside the water tank. At positions near the upper surface and the lower surface on the outer side of the water tank, an outlet pipe and an inlet pipe are respectively fixedly connected.

[0006] Preferably, a demister is fixedly installed at a position near the upper surface inside the water tank.

[0007] Preferably, a sponge board is fixedly installed at a position above the demister inside the water tank.

[0008] Preferably, a safety relief valve is fixedly connected to the outer surface of the biogas pipe.

[0009] Preferably, an air pump is fixedly installed on one side of the upper surface of the base away from the water tank. The output end of the air pump is fixedly connected to a one-way valve, and the end of the one-way valve is fixedly connected to a three-way valve. The upper surface of the three-way valve is fixedly connected to a connecting air pipe, and the end of the connecting air pipe is fixedly connected to the outer surface of the outer membrane.

[0010] Preferably, a single-chip microcomputer is fixedly installed on the upper surface of the air pump, and a pressure sensor is fixedly installed on the outer surface of the connecting air pipe. The pressure sensor, the three-way valve and the air pump are all electrically connected to the single-chip microcomputer.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By setting the foundation, bottom membrane, inner membrane, outer membrane, water tank, intake pipe, outlet pipe, intake valve, outlet valve and biogas pipe, the present utility model achieves the effect of setting a fire isolation protection device at the intake and outlet of the double-membrane biogas tank, improving the safety of equipment use. When external biogas enters the inner membrane, the biogas is transported to the inside of the water tank through the intake pipe. After passing through the water, the biogas enters the inner membrane through the intake valve. When the biogas in the inner membrane is discharged, the biogas is transported to the inside of the water tank through the outlet valve. After passing through the water, the biogas is discharged through the outlet pipe. Then, both the intake and outlet of the double-membrane biogas tank are separated by the water inside the water tank to prevent fire from entering the double-membrane biogas tank, thus eliminating potential safety hazards.

[0013] 2. By setting the demister and sponge plate, the present utility model achieves the effect of preventing the water vapor inside the water tank from mixing into the biogas. When the biogas enters the biogas pipe through the intake pipe and when the biogas enters the outlet pipe through the outlet valve, it needs to pass through the water inside the water tank. Therefore, the biogas is likely to carry water vapor. The demister can condense the water vapor in the biogas into droplets and drip them into the water tank to remove the water vapor in the biogas, while the sponge plate can further absorb the water vapor in the biogas.

[0014] 3. By setting the air pump, three-way valve, connecting air pipe, pressure sensor and single-chip microcomputer, the present utility model achieves the effect of automatically controlling the pressure regulation. The pressure value is detected by the pressure sensor, and the pressure signal is transmitted to the single-chip microcomputer. The single-chip microcomputer controls the air pump to work to inflate between the inner membrane and the outer membrane to increase the air pressure, or the three-way valve can be adjusted to connect the outer membrane to the outside world and release the air between the outer membrane and the inner membrane to reduce the air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0016] Figure 2 is a main cross-sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is a partial main cross-sectional structural schematic diagram of the water tank of the present utility model;

[0018] Figure 4 This is a schematic front view of a partial structure of the air pump of the present utility model.

[0019] Reference numerals: 1, base; 2, air outlet pipe; 3, water tank; 4, air inlet pipe; 5, outer membrane; 6, bottom membrane; 7, biogas pipe; 8, inner membrane; 9, air pump; 10, sponge plate; 11, demister; 12, intake valve; 13, outlet valve; 14, safety relief valve; 15, check valve; 16, connecting air pipe; 17, pressure sensor; 18, three-way valve; 19, single-chip microcomputer. Detailed implementation manners

[0020] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Embodiment

[0021] As Figures 1 - 3 shown, a double-membrane biogas holder with a protection structure proposed by the present utility model includes a base 1. A bottom membrane 6 is fixedly installed at the middle position of the upper surface of the base 1. An inner membrane 8 and an outer membrane 5 are fixedly installed on the upper surface of the bottom membrane 6, and the inner membrane 8 is located inside the outer membrane 5. A space for storing biogas is formed between the inner membrane 8 and the bottom membrane 6, and an isolation pressure regulating space for accommodating air is formed between the inner membrane 8 and the outer membrane 5. A water tank 3 is fixedly installed on one side of the upper surface of the base 1. The bottom surface of the bottom membrane 6 is fixedly connected to a biogas pipe 7. A safety relief valve 14 is fixedly connected to the outer surface of the biogas pipe 7. The end of the biogas pipe 7 is fixedly connected to an intake valve 12 and an outlet valve 13, and the ends of the intake valve 12 and the outlet valve 13 are respectively fixedly connected to positions near the upper surface and the lower surface inside the water tank 3. An air outlet pipe 2 and an air inlet pipe 4 are respectively fixedly connected to positions near the upper surface and the lower surface outside the water tank 3.

[0022] In the present utility model, when external biogas enters the inner membrane 8, the biogas is transported to the inside of the water tank 3 through the air inlet pipe 4, and the biogas enters the inner membrane 8 through the intake valve 12 after passing through the water. When the biogas in the inner membrane 8 is discharged, the biogas is transported to the inside of the water tank 3 through the outlet valve 13, and the biogas is discharged through the air outlet pipe 2 after passing through the water. Then, both the intake and outlet of the double-membrane biogas holder are blocked by the water inside the water tank 3 to prevent fire from entering the inside of the double-membrane biogas holder, thus eliminating potential safety hazards. Embodiment

[0023] As Figure 2 and Figure 3 shown, a double-membrane biogas holder with a protection structure proposed by the present utility model, compared with Embodiment 1, this embodiment further includes a demister 11 fixedly installed at a position near the upper surface inside the water tank 3, and a sponge plate 10 is fixedly installed at a position above the demister 11 inside the water tank 3

[0024] In this embodiment, when the biogas enters the biogas pipe 7 through the air inlet pipe 4 and enters the air outlet pipe 2 through the air outlet valve 13, it needs to pass through the water inside the water tank 3, so the biogas is likely to contain water vapor. The demister 11 can condense the water vapor in the biogas into droplets and drip into the water tank 3 to remove the water vapor in the biogas, and the sponge board 10 can further absorb the water vapor in the biogas. Example

[0025] If Figures 1 to 4 As shown, the utility model proposes a double-membrane biogas tank with a protective structure. Compared with the first embodiment, this embodiment also includes an air pump 9 fixedly installed on the side of the upper surface of the base 1 away from the water tank 3, a one-way valve 15 fixedly connected to the output end of the air pump 9, a three-way valve 18 fixedly connected to the end of the one-way valve 15, a connecting air pipe 16 fixedly connected to the upper surface of the three-way valve 18, and the end of the connecting air pipe 16 is fixedly connected to the outer surface of the outer membrane 5, a single-chip microcomputer 19 fixedly installed on the upper surface of the air pump 9, a pressure sensor 17 fixedly installed on the outer surface of the connecting air pipe 16, the detection probe of the pressure sensor 17 is located inside the connecting air pipe 16, and the pressure sensor 17, the three-way valve 18 and the air pump 9 are all electrically connected to the single-chip microcomputer 19.

[0026] In this embodiment, the pressure value is detected by the pressure sensor 17, and the pressure signal is transmitted to the single chip microcomputer 19. The single chip microcomputer 19 controls the air pump 9 to inflate the space between the inner membrane 8 and the outer membrane 5 to increase the air pressure. The outer membrane 5 can also be connected to the outside by adjusting the three-way valve 18 to release the air between the outer membrane 8 and the inner membrane 5 to reduce the air pressure.

[0027] The above specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A double-membrane biogas cabinet with a protective structure, comprising a base (1), characterized in that: A bottom membrane (6) is fixedly mounted at a middle position on the upper surface of the base (1); an inner membrane (8) and an outer membrane (5) are fixedly mounted on the upper surface of the bottom membrane (6), and the inner membrane (8) is located inside the outer membrane (5); a water tank (3) is fixedly mounted on one side of the upper surface of the base (1); a biogas pipe (7) is fixedly connected to the lower surface of the bottom membrane (6); an air inlet valve (12) and an air outlet valve (13) are fixedly connected to the ends of the biogas pipe (7); the ends of the air inlet valve (12) and the air outlet valve (13) are respectively fixedly connected to the inner side of the water tank (3) near the upper surface and the lower surface; and an air outlet pipe (2) and an air inlet pipe (4) are respectively fixedly connected to the outer side of the water tank (3) near the upper surface and the lower surface.

2. The double-membrane biogas cabinet with a protective structure according to claim 1, characterized in that: A demister (11) is fixedly installed inside the water tank (3) near the upper surface.

3. The double-membrane biogas cabinet with a protective structure according to claim 2, characterized in that: A sponge plate (10) is fixedly installed inside the water tank (3) at a position above the demister (11).

4. The double-membrane biogas cabinet with a protective structure according to claim 1, characterized in that: A safety pressure relief valve (14) is fixedly connected to the outer surface of the biogas pipe (7).

5. The double-membrane biogas cabinet with a protective structure according to claim 1, characterized in that: An air pump (9) is fixedly mounted on the side of the upper surface of the base (1) facing away from the water tank (3); a one-way valve (15) is fixedly connected to the output end of the air pump (9); a three-way valve (18) is fixedly connected to the end of the one-way valve (15); a connecting air pipe (16) is fixedly connected to the upper surface of the three-way valve (18); and the end of the connecting air pipe (16) is fixedly connected to the outer surface of the outer membrane (5).

6. The double-membrane biogas cabinet with a protective structure according to claim 5, characterized in that: A single-chip microcomputer (19) is fixedly mounted on the upper surface of the air pump (9), a pressure sensor (17) is fixedly mounted on the outer surface of the connecting air pipe (16), and the pressure sensor (17), the three-way valve (18) and the air pump (9) are all electrically connected to the single-chip microcomputer (19).

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