A safety protection facility for biogas storage

Abstract

This utility model discloses a safety protection facility for biogas storage, comprising: a valve body, a valve cover at the top of the valve body, a valve body mechanism at the bottom of the valve cover, a push rod slidably connected to the middle of the valve cover, a transparent tube fixedly connected to one end of the top of the valve cover, and a drive adjustment mechanism at the other end of the top of the valve cover; under normal conditions, the piston is pressed and sealed by a spring and a connecting plate to prevent biogas from flowing. When the biogas pressure increases, it pushes the piston upward, and the pressure sensor monitors it in real time. The limit rod extends into the transparent tube to visually judge the pressure change. When the pressure reaches the threshold, the piston opens the channel, and the biogas enters the discharge filter box through the exhaust pipe and is discharged from the gas outlet pipe. When the threshold needs to be adjusted or special situations need to be dealt with, the controller starts the electric push rod, which drives the movable plate to adjust the spring preload. The folded sheath prevents dust and water vapor from entering, the folded tube protects the spring from corrosion, and the flange structure ensures both airtightness and ease of maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of biogas storage safety protection equipment, specifically a safety protection facility for biogas storage. Background Technology

[0002] Biogas storage refers to the collection and storage of biogas produced by anaerobic fermentation of biomass using specific equipment, such as low-pressure wet gas holders, dry gas holders, and flexible gas bags. The core is to solve the supply and demand time difference problem of biogas being produced immediately but not used immediately. Special attention needs to be paid to the control of gas pressure stability during its storage.

[0003] Because the biogas production rate is affected by fluctuations in factors such as raw materials and temperature, and the gas load also has peaks and troughs, the gas pressure inside the gas storage facility is very prone to abnormal increases or decreases. When the gas pressure is too high, it may cause the gas storage tank to rupture due to overpressure or the weld to crack, leading to a serious leakage accident.

[0004] However, most existing equipment is designed with a single threshold, which cannot be flexibly adjusted according to the gas storage scale (such as small gas bags and large gas holders) or gas production fluctuations. This facility, on the other hand, can dynamically adapt to the pressure requirements of different scenarios by adjusting the spring preload through an electric push rod. Utility Model Content

[0005] The purpose of this utility model is to provide a safety protection facility for biogas storage in order to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety protection facility for biogas storage, comprising: a valve housing, a valve cover at the top of the valve housing, a valve body mechanism at the bottom of the valve cover, a push rod slidably connected to the middle of the valve cover, a transparent tube fixedly connected to one end of the top of the valve cover, a drive adjustment mechanism at the other end of the top of the valve cover, and a discharge filter mechanism on one side of the valve housing.

[0007] As a further embodiment of this utility model: the valve body mechanism includes a piston, a connecting plate, and a movable plate. The piston is located at the lower end of the valve housing, the connecting plate is fixedly connected to the top of the piston, and the movable plate is slidably connected to the upper end of the valve housing; a spring, a limiting rod, a folding tube, and a pressure sensor are also included. The spring is fixedly connected to one end of the top of the connecting plate, the limiting rod is fixedly connected to the other end of the top of the connecting plate, the folding tube is fixedly connected to the top of the connecting plate near its edge, and the pressure sensor is fixedly connected to the bottom of the piston; the limiting rod is slidably connected to the movable plate and the valve cover, and the limiting rod portion passes through the movable plate and the valve cover and is movably inserted into the transparent tube; the bottom of the push rod is fixedly connected to the movable plate.

[0008] As a further embodiment of this utility model: the drive adjustment mechanism includes a support frame, a folding sleeve, and a connecting block. The support frame is fixedly connected to the other end of the top of the valve cover, the folding sleeve is fixedly connected to the middle of the top of the valve cover, and the connecting block is fixedly connected to the top of the folding sleeve; an electric push rod and a controller are also included. The electric push rod is fixedly connected to the middle of the support frame, the controller is fixedly connected to the other end of the support frame, and the top of the push rod passes through the valve cover and the folding sleeve and is fixedly connected to the connecting block.

[0009] As a further embodiment of this utility model: the discharge filtration mechanism includes an exhaust pipe and a discharge filter box, the exhaust pipe being fixedly connected to one side of the valve housing, and the discharge filter box being fixedly connected to one end of the exhaust pipe; an air outlet pipe and a box cover, the air outlet pipe being fixedly connected to the other side of the discharge filter box, and the box cover being snapped onto the top of the discharge filter box.

[0010] As a further embodiment of this utility model: a flange is fixedly connected to the upper outer side of the valve body, a flange is fixedly connected to the outer side of the valve cover, a sealing ring groove is provided at the port of the valve body, and a sealing gasket is fixedly connected to the lower part of the valve cover, and the sealing ring groove is adapted to the sealing gasket.

[0011] As a further improvement of this utility model: multiple sets of the spring and the limiting rod are provided, the other end of the spring is fixedly connected to the movable disc, and the other end of the folding tube is fixedly connected to the movable disc.

[0012] As a further embodiment of this utility model: the movable end of the electric push rod is fixedly connected to the connecting block, and the electric push rod and the controller are electrically connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, under normal conditions, a spring and connecting disc press the piston tightly to seal the valve housing channel, preventing biogas flow. When the biogas pressure increases, it pushes the piston upward. A pressure sensor monitors this in real time, and a limit rod extending into the transparent tube allows for direct observation of pressure changes. When the pressure reaches a threshold, the piston opens the channel, and biogas enters the discharge filter box (after desulfurization and other treatments) through the exhaust pipe and is discharged from the outlet pipe. When the threshold needs to be adjusted or special situations need to be addressed, the controller activates the electric push rod, which drives the movable disc to adjust the spring preload. The folded sheath prevents dust and moisture from entering, and the folded tube protects the spring from corrosion. The flange structure ensures airtightness and facilitates maintenance. After the pressure drops to a safe range, the spring pushes the piston back to its original position and seals. This combination of automatic pressure relief and real-time monitoring, along with desulfurization treatment and multiple seals, provides strong safety assurance. The pressure threshold can be flexibly adjusted to suit large and small storage devices. The flange connection facilitates maintenance, and the folded tube extends the equipment's lifespan. The transparent tube design makes pressure changes clearly visible and operation convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the valve housing structure in this utility model;

[0017] Figure 3 This is a schematic diagram of the valve cover structure in this utility model;

[0018] Figure 4 This is a schematic diagram of the valve body mechanism in this utility model;

[0019] Figure 5 This is a schematic diagram of the drive adjustment mechanism in this utility model;

[0020] Figure 6 This is a schematic diagram of the discharge filtration mechanism in this utility model.

[0021] In the diagram: 1. Valve body; 2. Valve cover; 3. Valve body mechanism; 31. Piston; 32. Connecting disc; 33. Movable disc; 34. Spring; 35. Limiting rod; 36. Folded tube; 37. Pressure sensor; 4. Push rod; 5. Transparent tube; 6. Drive adjustment mechanism; 61. Support frame; 62. Folded sheath; 63. Connecting block; 64. Electric push rod; 65. Controller; 7. Discharge filter mechanism; 71. Exhaust pipe; 72. Discharge filter box; 73. Air outlet pipe; 74. Box cover; 8. Flange 1; 9. Flange 2; 10. Sealing ring groove; 11. Sealing gasket ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Reference Figures 1 to 6 In this embodiment of the utility model, a safety protection facility for biogas storage includes: a valve housing 1, which serves as the main frame of the entire facility, provides internal space to accommodate multiple components, and is the basic carrier for biogas circulation and sealing. A valve cover 2 is provided on the top of the valve housing 1, which provides an installation base for other components and forms a sealed space in conjunction with the valve housing 1. A valve body mechanism is provided at the bottom of the valve cover 2.

[0025] A push rod 4 is slidably connected to the middle of the valve cover 2 as a power transmission component. A transparent tube 5 is fixedly connected to one end of the top of the valve cover 2 for visually judging pressure changes. A drive adjustment mechanism 6 is provided at the other end of the top of the valve cover 2. A discharge filter mechanism 7 is provided on one side of the valve body 1.

[0026] Reference Figure 2 and Figure 4 The valve body mechanism 3 includes a piston 31, a connecting plate 32 and a movable plate 33. The piston 31 is located at the lower end of the valve body 1, the connecting plate 32 is fixedly connected to the top of the piston 31, and the movable plate 33 is slidably connected to the upper end of the valve body 1.

[0027] Spring 34, limiting rod 35, folding tube 36 and pressure sensor 37, spring 34 is fixedly connected to one end of the top of connecting plate 32, limiting rod 35 is fixedly connected to the other end of the top of connecting plate 32, folding tube 36 is fixedly connected to the top of connecting plate 32 near the edge, and pressure sensor 37 is fixedly connected to the bottom of piston 31.

[0028] The limiting rod 35 is slidably connected to the movable plate 33 and the valve cover 2, and part of the limiting rod 35 passes through the movable plate 33 and the valve cover 2 and is movably inserted into the transparent tube 5. The bottom of the push rod 4 is fixedly connected to the movable plate 33.

[0029] Multiple sets of springs 34 and limit rods 35 are provided. The other end of spring 34 is fixedly connected to movable disc 33, and the other end of folded tube 36 is fixedly connected to movable disc 33. Biogas enters the bottom of valve housing 1 and acts on piston 31. Pressure sensor 37 at the bottom of piston 31 monitors the pressure value in real time. As the pressure increases, its thrust on piston 31 gradually overcomes the elastic force of spring 34, pushing piston 31 and connecting disc 32 to move upward. Limit rod 35 slides upward along movable disc 33 and valve cover 2 simultaneously, partially extending into transparent tube 5. The movement range of piston 31 can be directly observed through transparent tube 5 to judge pressure changes.

[0030] Reference Figure 1 , Figure 2 and Figure 5 The drive adjustment mechanism 6 includes a support frame 61, a folding sleeve 62, and a connecting block 63. The support frame 61 is fixedly connected to the other end of the top of the valve cover 2, the folding sleeve 62 is fixedly connected to the middle of the top of the valve cover 2, and the connecting block 63 is fixedly connected to the top of the folding sleeve 62.

[0031] Electric push rod 64 and controller 65, electric push rod 64 is fixedly connected to the middle of support frame 61, controller 65 is fixedly connected to the other end of support frame 61, push rod 4 top passes through valve cover 2 and folding sleeve 62 and is fixedly connected to connecting block 63;

[0032] The movable end of the electric push rod 64 is fixedly connected to the connecting block 63. The electric push rod 64 and the controller 65 are electrically connected. If it is necessary to adjust the pressure threshold or deal with special situations, the electric push rod 64 can be started by the controller 65. The electric push rod 64 pushes the connecting block 63, the push rod 4 and the movable plate 33 to move up and down, adjusting the preload of the spring 34, thereby changing the pressure threshold at which the piston 31 is lifted. The folding sleeve 62 plays a sealing role when driven, preventing external dust and moisture from entering the valve body 1 through the valve cover 2 and affecting the operation of the components.

[0033] Reference Figure 1 and Figure 6 The discharge filtration mechanism 7 includes an exhaust pipe 71 and a discharge filter box 72. The exhaust pipe 71 is fixedly connected to one side of the valve body 1, and the discharge filter box 72 is fixedly connected to one end of the exhaust pipe 71.

[0034] The gas outlet pipe 73 and the cover 74 are fixedly connected to the other side of the discharge filter box 72. The cover 74 is snapped onto the top of the discharge filter box 72. When the pressure reaches the threshold, the piston 31 moves up to open the communication channel between the valve housing 1 and the exhaust pipe 71. The biogas enters the discharge filter box 72 through the exhaust pipe 71. After being treated by the agent (such as desulfurizing agent) in the filter box, it is discharged from the gas outlet pipe 73, realizing the safe filtration and discharge of biogas.

[0035] Reference Figures 1 to 3 A flange 8 is fixedly connected to the upper outer side of the valve body 1, and a flange 9 is fixedly connected to the outer side of the valve cover 2. A sealing ring groove 10 is provided at the port of the valve body 1, and a sealing gasket 11 is fixedly connected to the lower part of the valve cover 2. The sealing ring groove 10 and the sealing gasket 11 are adapted to each other. The flange 8 and the flange 9 cooperate with the sealing ring groove 10 and the sealing gasket 11 to ensure the airtightness of the connection between the valve body 1 and the valve cover 2, prevent biogas leakage, and facilitate disassembly for maintenance.

[0036] The working principle of this utility model is as follows: In normal use, the spring 34 is in a natural extension and contraction state, and the piston 31 is pressed against the lower end of the valve body 1 through the connecting plate 32, thereby sealing the internal channel of the valve body 1 and preventing the flow of biogas. When the pressure in the biogas storage device increases, the biogas enters the bottom of the valve body 1 and acts on the piston 31. The pressure sensor 37 at the bottom of the piston 31 monitors the pressure value in real time. As the pressure increases, its thrust on the piston 31 gradually overcomes the elastic force of the spring 34, pushing the piston 31 and the connecting plate 32 to move upward. The limit rod 35 slides upward along the movable plate 33 and the valve cover 2, and partially extends into the transparent tube 5. The movement range of the piston 31 can be observed directly through the transparent tube 5 to judge the pressure change.

[0037] When the pressure reaches the threshold, the piston 31 moves upward to open the communication channel between the valve housing 1 and the exhaust pipe 71. The biogas enters the discharge filter box 72 through the exhaust pipe 71, and after being treated by the agent (such as desulfurizing agent) in the filter box, it is discharged from the gas outlet pipe 73, thus achieving safe filtration and discharge of biogas.

[0038] If it is necessary to adjust the pressure threshold or deal with special situations, the electric push rod 64 can be activated by the controller 65. The electric push rod 64 pushes the connecting block 63, push rod 4 and movable plate 33 to move up and down, adjust the preload of spring 34, thereby changing the pressure threshold of piston 31 being pushed up. The folding sleeve 62 plays a sealing role when driven, preventing external dust and moisture from entering the valve body 1 through valve cover 2 and affecting the operation of the components.

[0039] The folded tube 36 extends and retracts with the relative movement of the connecting plate 32 and the movable plate 33, which plays a sealing and protective role, and minimizes the corrosion of the spring 34 by corrosive components such as hydrogen sulfide in biogas, thereby reducing the probability of the spring 34 rusting and failing.

[0040] Flange 18 and flange 29 are fitted with sealing ring groove 10 and sealing gasket 11 to ensure the airtightness of the connection between valve body 1 and valve cover 2, prevent biogas leakage, and facilitate disassembly for maintenance; when the biogas pressure drops to a safe range, the elastic force of spring 34 pushes connecting plate 32 and piston 31 to reset, reseal the internal passage of valve body 1, and stop venting.

[0041] Compared to traditional pressure relief devices with fixed thresholds, this method adjusts the preload of the spring 34 by moving the movable disc 33 up and down, thereby changing the pressure threshold at which the piston 31 is lifted. This method is suitable for both small gas storage bags and large-scale gas storage tanks with different pressure relief requirements.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A safety protection facility for biogas storage, characterized in that, include: A valve housing (1) is provided with a valve cover (2) on the top of the valve housing (1), a valve body mechanism (3) is provided at the bottom of the valve cover (2), a push rod (4) is slidably connected in the middle of the valve cover (2), a transparent tube (5) is fixedly connected to one end of the top of the valve cover (2), a drive adjustment mechanism (6) is provided at the other end of the top of the valve cover (2), and a discharge filter mechanism (7) is provided on one side of the valve housing (1).

2. The safety protection facility for biogas storage according to claim 1, characterized in that, The valve body mechanism (3) includes: The piston (31), connecting plate (32) and movable plate (33) are provided. The piston (31) is located at the lower end of the valve housing (1). The connecting plate (32) is fixedly connected to the top of the piston (31). The movable plate (33) is slidably connected to the upper end of the valve housing (1). The spring (34), the limiting rod (35), the folding tube (36), and the pressure sensor (37) are fixedly connected to one end of the top of the connecting plate (32), the limiting rod (35) is fixedly connected to the other end of the top of the connecting plate (32), the folding tube (36) is fixedly connected to the top of the connecting plate (32) near the edge, and the pressure sensor (37) is fixedly connected to the bottom of the piston (31). The limiting rod (35) is slidably connected to the movable plate (33) and the valve cover (2), and the limiting rod (35) partially passes through the movable plate (33) and the valve cover (2) and is movably inserted into the transparent tube (5). The bottom of the push rod (4) is fixedly connected to the movable plate (33).

3. A safety protection facility for biogas storage according to claim 1, characterized in that, The drive adjustment mechanism (6) includes: The support frame (61), the folding sleeve (62), and the connecting block (63) are fixedly connected to the other end of the top of the valve cover (2), the folding sleeve (62) is fixedly connected to the middle of the top of the valve cover (2), and the connecting block (63) is fixedly connected to the top of the folding sleeve (62). An electric push rod (64) and a controller (65) are provided. The electric push rod (64) is fixedly connected to the middle of the support frame (61), and the controller (65) is fixedly connected to the other end of the support frame (61). The top of the push rod (4) passes through the valve cover (2) and the folding sleeve (62) and is fixedly connected to the connecting block (63).

4. A safety protection facility for biogas storage according to claim 1, characterized in that, The discharge filtration mechanism (7) includes: An exhaust pipe (71) and a discharge filter box (72) are provided. The exhaust pipe (71) is fixedly connected to one side of the valve housing (1), and the discharge filter box (72) is fixedly connected to one end of the exhaust pipe (71). An air outlet pipe (73) and a cover (74) are provided. The air outlet pipe (73) is fixedly connected to the other side of the discharge filter box (72), and the cover (74) is snapped onto the top of the discharge filter box (72).

5. A safety protection facility for biogas storage according to claim 1, characterized in that, A flange (8) is fixedly connected to the upper outer side of the valve body (1), and a flange (9) is fixedly connected to the outer side of the valve cover (2). A sealing ring groove (10) is provided at the port of the valve body (1), and a sealing gasket (11) is fixedly connected to the lower part of the valve cover (2). The sealing ring groove (10) is adapted to the sealing gasket (11).

6. A safety protection facility for biogas storage according to claim 2, characterized in that, Multiple sets of the spring (34) and the limiting rod (35) are provided. The other end of the spring (34) is fixedly connected to the movable disc (33), and the other end of the folding tube (36) is fixedly connected to the movable disc (33).

7. A safety protection facility for biogas storage according to claim 3, characterized in that, The movable end of the electric push rod (64) is fixedly connected to the connecting block (63), and the electric push rod (64) and the controller (65) are electrically connected.

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