Biogas purifying and pressure stabilizing device

Abstract

The utility model belongs to the technical field of biogas purification, and particularly relates to a biogas purification pressure stabilizing device which comprises a first gas inlet pipe and a second gas inlet pipe, the first gas inlet pipe is located below the second gas inlet pipe, and the same ends of the first gas inlet pipe and the second gas inlet pipe are connected with a transfer bin. A first guide pipe and a second guide pipe are fixed above and below the sides, away from the first gas inlet pipe and the second gas inlet pipe, of the transfer bin respectively, a pressure balance tank is connected to the end, away from the transfer bin, of the first guide pipe, biogas using equipment is connected to the end, away from the transfer bin, of the first guide pipe, and a pressure sensor is installed in the biogas using equipment; a connecting pipe is connected between the pressure balance tank and the biogas using equipment, a fan is mounted in the middle of the connecting pipe, and a control structure is mounted in the transfer bin. According to the utility model, the stability of biogas output pressure can be ensured, the fluctuation of biogas yield can be effectively handled, and the stable operation of subsequent gas equipment is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of biogas purification technology, specifically relating to a biogas purification and pressure stabilization device. Background Technology

[0002] In the production and application of biogas, the stable output pressure of biogas is crucial to ensuring the normal operation of subsequent gas-using equipment. However, since the production of biogas is affected by various factors such as the fermentation process of raw materials, temperature, and pressure, its output often exhibits unstable fluctuations. These fluctuations lead to unstable biogas output pressure, which in turn affects the utilization efficiency of biogas and the safe and stable operation of gas-using equipment.

[0003] While existing biogas purification and pressure stabilization devices have solved the problem of biogas pressure fluctuations to some extent, they still have some shortcomings. For example, some devices, although capable of adjusting pressure, are complex in structure, costly, and inconvenient to maintain in practical applications.

[0004] Therefore, in view of the shortcomings of the existing technology, this utility model proposes an improved biogas purification and pressure stabilization device. Utility Model Content

[0005] The purpose of this invention is to provide a biogas purification and pressure stabilization device that can ensure the stability of biogas output pressure, effectively cope with fluctuations in biogas production, and ensure the stable operation of subsequent gas-using equipment.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A biogas purification and pressure stabilization device includes a first air inlet pipe and a second air inlet pipe, with the first air inlet pipe located below the second air inlet pipe. A transfer chamber is connected to the same end of the first and second air inlet pipes. A first guide pipe and a second guide pipe are respectively fixed above and below the side of the transfer chamber away from the first and second air inlet pipes. A pressure balance tank is connected to the end of the first guide pipe away from the transfer chamber. A biogas using device is connected to the end of the first guide pipe away from the transfer chamber. A pressure sensor is installed inside the biogas using device.

[0008] A connecting pipe is connected between the pressure balancing tank and the biogas using equipment, and a blower is installed in the middle of the connecting pipe;

[0009] The transfer compartment is equipped with a control structure, which is used to control the flow rate of the first air intake pipe and the second air intake pipe.

[0010] The control structure includes a baffle plate slidably connected inside the transfer chamber. A motor is installed on the top of the transfer chamber, and a threaded rod is fixed vertically downward at the output end of the motor. The threaded rod is threadedly connected to the baffle plate. The baffle plate is used to block the second air intake pipe, the first air intake pipe, the first guide pipe, and the second guide pipe.

[0011] The pressure balancing tank is equipped with multiple turbulence blocks.

[0012] The first and second air intake pipes are equipped with filters.

[0013] The length of the baffle plate is at least greater than the length of the first air intake pipe or the second air intake pipe.

[0014] A sealing gasket is provided on the outside of the baffle plate.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This invention introduces a pressure balancing tank, which effectively utilizes the gas storage space within the tank to buffer biogas pressure fluctuations. When biogas production exceeds usage, the excess biogas enters the pressure balancing tank, where it is compressed and stored. Conversely, when biogas production is less than usage, the stored biogas is released to replenish the pressure, thus ensuring stable biogas output pressure. This device has a simple structure, low cost, and is easy to maintain. It can effectively cope with biogas production fluctuations and ensure the stable operation of subsequent gas-using equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a front view of the entire invention.

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. First air inlet pipe; 2. Transfer chamber; 3. Biogas processing equipment; 4. Second air inlet pipe; 5. Pressure balance tank; 6. Connecting pipe; 7. Blower; 8. Baffle plate; 9. Motor; 10. Threaded rod; 11. Sealing gasket; 12. Baffle block; 13. Filter screen; 14. First guide pipe; 15. Second guide pipe. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figures 1-4 As shown, a biogas purification and pressure stabilization device includes a first air inlet pipe 1 and a second air inlet pipe 4, with the first air inlet pipe 1 located below the second air inlet pipe 4. A filter screen 13 is installed inside the first air inlet pipe 1 and the second air inlet pipe 4. The filter screen 13 can pre-filter the biogas, reduce particulate matter in the biogas, and thus ensure the purity of the biogas. A transfer chamber 2 is connected to the same end of the first air inlet pipe 1 and the second air inlet pipe 4. A first guide pipe 14 and a second guide pipe 15 are fixed above and below the side of the transfer chamber 2 away from the first air inlet pipe 1 and the second air inlet pipe 4, respectively. A pressure balance tank 5 is connected to the end of the first guide pipe 14 away from the transfer chamber 2, and a biogas use device 3 is connected to the end of the first guide pipe 14 away from the transfer chamber 2.

[0025] Under normal circumstances, the first air inlet pipe 1 draws gas from the biogas digester and delivers it to the transfer chamber 2 through the first air inlet pipe 1. Then, through the transfer chamber 2, it is transferred to the biogas-using equipment 3 via the second guide pipe 15, thus realizing the transmission of biogas.

[0026] A pressure sensor is installed inside the biogas device 3, and a controller is also installed on the biogas device 3, which is electrically connected to the pressure sensor.

[0027] A connecting pipe 6 connects the pressure balancing tank 5 and the biogas using equipment 3, and a blower 7 is installed in the middle of the connecting pipe 6;

[0028] The transfer chamber 2 is equipped with a control structure, which is used to control the flow rate of the first air intake pipe 1 and the second air intake pipe 4.

[0029] See attached document Figure 3The control structure includes a baffle plate 8 slidably connected inside the transfer chamber 2. Furthermore, the vertical length of the baffle plate 8 is at least greater than the length of the first air inlet pipe 1 or the second air inlet pipe 4. With this arrangement, when the baffle plate 8 moves up or down, it can block one of the biogas first air inlet pipe 1 or the second air inlet pipe 4, preventing air leakage when the first air inlet pipe 1 or the second air inlet pipe 4 is blocked. Furthermore, a sealing gasket 11 is provided on the outside of the baffle plate 8. The sealing gasket 11 can enhance the blocking effect of the baffle plate 8 on the first air inlet pipe 1 and the second air inlet pipe 4, ensuring airtightness. The sealing gasket 11 can be made of flexible material such as rubber. A motor 9 is installed on the top of the transfer chamber 2. The controller is electrically connected to the motor 9. A threaded rod 10 is fixed vertically downward at the output end of the motor 9. The threaded rod 10 is threadedly connected to the baffle plate 8. The baffle plate 8 is used to block the second air inlet pipe 4, the first air inlet pipe 1, the first guide pipe 14 and the second guide pipe 15.

[0030] After the pressure inside the biogas use equipment 3 exceeds a certain threshold, the pressure sensor transmits the signal to the controller, and the controller controls the motor 9 to drive it, so that the output end of the motor 9 drives the threaded rod 10 to rotate. Through the threaded connection between the threaded rod 10 and the baffle plate 8, and through the restriction between the baffle plate 8 and the transfer chamber 2, the baffle plate 8 can move up and down when the threaded rod 10 rotates.

[0031] When the baffle plate 8 moves down, the second air inlet pipe 4 and the first guide pipe 14 can communicate with the space inside the transfer chamber 2. At this time, the second air inlet pipe 4 can also draw gas from the biogas digester and transport it to the first guide pipe 14. The gas is then transmitted to the pressure balance tank 5 through the first guide pipe 14. The pressure balance tank 5 can store biogas in advance. After the pressure in the biogas use equipment 3 drops, the biogas in the pressure balance tank 5 is transported to the biogas use equipment 3 through the connecting pipe 6 by the blower 7. The baffle plate 8 can move to a certain position to partially block the first air inlet pipe 1 and the second air inlet pipe 4, so that the first air inlet pipe 1 and the second air inlet pipe 4 simultaneously output a small amount of gas, which then allows the gas to enter the first guide pipe 14 and the second guide pipe 15 respectively.

[0032] See attached document Figure 4The pressure balancing tank 5 is equipped with multiple turbulence blocks 12. The turbulence blocks 12 can disturb the gas entering the pressure balancing tank 5, preventing the gas from directly impacting the tank wall and causing excessively high local pressure. They also change the flow direction of the gas, making the gas form a uniformly distributed flow field inside the tank, avoiding local gas accumulation or excessively high flow velocity. This improves the pressure stabilization efficiency and stability of the pressure balancing tank 5, avoids damage to the tank wall caused by excessively high or low local pressure, extends the service life of the pressure balancing tank 5, and ensures the stable operation of the entire biogas purification system.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A biogas purification pressure stabilizing device comprising a first gas inlet pipe (1) and a second gas inlet pipe (4), and the first gas inlet pipe (1) is located below the second gas inlet pipe (4), characterized in that: The same end of the first air inlet pipe (1) and the second air inlet pipe (4) is connected with a transfer bin (2), the upper and lower sides of the transfer bin (2) away from the first air inlet pipe (1) and the second air inlet pipe (4) are respectively fixed with a first guide pipe (14) and a second guide pipe (15), one end of the first guide pipe (14) away from the transfer bin (2) is connected with a pressure balance tank (5), one end of the first guide pipe (14) away from the transfer bin (2) is connected with a biogas using device (3), and a pressure sensor is installed in the biogas using device (3). The pressure balance tank (5) and the biogas using device (3) are connected with a connecting pipe (6), and a fan (7) is installed in the middle of the connecting pipe (6). A control structure is installed in the transfer bin (2), and the control structure is used for controlling the flow of the first air inlet pipe (1) and the second air inlet pipe (4).

2. The biogas purification and pressure stabilizing device according to claim 1, characterized in that: The control structure comprises a blocking plate (8) slidably connected in the transfer bin (2), a motor (9) is installed on the top of the transfer bin (2), a threaded rod (10) is fixed vertically downward on the output end of the motor (9), the threaded rod (10) is threadedly connected with the blocking plate (8), and the blocking plate (8) is used for shielding the second air inlet pipe (4), the first air inlet pipe (1), the first guide pipe (14) and the second guide pipe (15).

3. The biogas purification and pressure stabilizing device according to claim 1, characterized in that: A plurality of turbulence blocks (12) are arranged in the pressure balance tank (5).

4. The biogas purification and pressure stabilizing device according to claim 1, characterized in that: A filter screen (13) is installed in the first air inlet pipe (1) and the second air inlet pipe (4).

5. The biogas purification and pressure stabilizing device according to claim 2, characterized in that: The length of the blocking plate (8) in the up-down direction is at least greater than the length of the first air inlet pipe (1) or the second air inlet pipe (4).

6. The biogas purification and pressure stabilizing device according to claim 2, characterized in that: A sealing gasket (11) is arranged on the outer side of the blocking plate (8).

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