Small biogas storage system

Abstract

The utility model relates to a small-sized biogas storage system which comprises a biogas storage bag, a biogas inlet pipe, a biogas inlet pipe sleeve, a biogas outlet pipe sleeve, a biogas outlet pipe, a water seal tank water replenishing pipe, a water level control floating ball valve, a water seal overflow port, a water seal overflow port connecting pipe, a biogas water seal tank, a biogas bag height monitoring device and a biogas inlet pipe and outlet pipe condensate water seal tank, the biogas storage bag is fixed on the pool wall of the biogas water seal pool, the biogas bag height monitoring device is fixed on the top of the water seal pool, and the water seal pool water supplementing pipe is fixed on the pool wall of the biogas water seal pool; the water level control floating ball valve is located in the biogas water seal tank, the water seal tank water replenishing pipe is connected with the water level control floating ball valve, and the water seal overflow port is connected with the water seal overflow port connecting pipe; according to the utility model, a water seal form is adopted for feeding and discharging biogas and biogas condensate, so that the biogas is safe and does not leak; the gas inlet and outlet pipe adopts a bottom gas inlet mode, frequent abrasion with the biogas bag is avoided, and the maintenance cost of the biogas bag is further reduced; the height of the biogas bag is monitored through the top, the inflation condition is visually reflected, and the flow in and out of the biogas bag is conveniently controlled.

Description

Technical Field

[0001] The utility model relates to a biogas storage system, in particular to a small biogas storage system which adopts water seal for both inlet and outlet biogas and biogas condensate, is safe and leak-free, can intuitively reflect the inflation situation, and is convenient for controlling the flow of inlet and outlet biogas bags. Background Art

[0002] Biogas bag storage is a common form in the field of small biogas power generation. Biogas is basically stored at the top. In this case, the inlet and outlet of the biogas bag will cause frequent wear and tear at the pipe joint, causing damage to the biogas bag, especially for double-membrane gas cabinets, which are difficult to repair. It is not easy to ensure the sealing of biogas by using simple single-layer biogas bags for storage. Utility Model Content

[0003] In view of the above problems, the main purpose of the utility model is to provide a small biogas storage system which adopts water seal for both inlet and outlet of biogas and biogas condensate, is safe and leak-free, can reflect the inflation situation more intuitively, and can conveniently control the flow in and out of the biogas bag.

[0004] The utility model solves the above technical problems through the following scheme: a small-scale biogas storage system, which comprises: a biogas storage bag, a biogas inlet pipe, a biogas inlet pipe sleeve, a biogas outlet pipe, a biogas outlet pipe sleeve, a water seal tank water supply pipe, a water level control float valve, a water seal overflow port, a water seal overflow port connecting pipe, a biogas water seal tank, a biogas bag height monitoring device, a biogas inlet pipe condensate water seal box, and a biogas outlet pipe condensate water seal box.

[0005] The biogas storage bag is fixed on the wall of the biogas water seal tank, the biogas bag height monitoring device is fixed on the top of the water seal tank, the biogas inlet pipe sleeve and the biogas outlet pipe sleeve are both fixed on the bottom of the biogas water seal tank, the biogas inlet pipe penetrates into the biogas inlet pipe sleeve, and the biogas outlet pipe is led out from the biogas outlet pipe sleeve.

[0006] The water seal tank water supply pipe is fixed on the pool wall of the biogas water seal tank; the water level control float valve is located in the biogas water seal tank, the water seal tank water supply pipe and the water level control float valve are connected, the water seal overflow port and the water seal overflow port pipe are connected; the water seal overflow port is opened on the pool wall of the biogas water seal tank; the water seal overflow port pipe is located outside the biogas water seal tank.

[0007] The biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are both located outside the biogas water seal tank, and the biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are respectively located below the biogas inlet pipe and the biogas outlet pipe.

[0008] In a specific implementation example of the utility model, the biogas bag height monitoring device is a device made of a round steel bracket, and the biogas bag height monitoring device is fixed to the top of the biogas water seal tank using anchor bolts.

[0009] In a specific implementation example of the utility model, the biogas storage bag is fixed on the wall of the biogas water seal tank by expansion screws and hooks.

[0010] In a specific implementation example of the utility model, the water seal pool water supply pipe is connected to the water level control float valve to control the water supply water level height, and the water seal overflow port is connected to the water seal overflow port pipe.

[0011] In a specific implementation example of the utility model, fixed flat steels can be arranged at both ends of the air outlet sleeve and welded to the air outlet pipe, and the air outlet sleeve can be fixed to the bottom of the water seal pool by a channel steel bracket.

[0012] In a specific implementation example of the utility model, a condensate pipe is arranged at the low point of the biogas inlet and outlet pipes, which respectively lead to the condensate water seal box of the inlet pipe and the condensate water seal box of the outlet pipe. The condensate water seal box controls the water level through a float valve and an overflow port, and discharges the moisture in the biogas inlet and outlet pipes in time to avoid corrosion of the inlet and outlet pipes.

[0013] In a specific implementation example of the utility model, the biogas storage bag is a PVC red mud biogas bag.

[0014] In the specific implementation example of the utility model, the biogas inlet and outlet pipes and the casing are both made of 304 stainless steel pipes; the biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are both made of 304 stainless steel box.

[0015] The positive progressive effect of the utility model is that compared with common similar technologies, the small-scale biogas storage system provided by the utility model adopts water seal for the inlet and outlet of biogas and biogas condensate to ensure the safety of biogas and prevent leakage. The material selection of biogas bags can use economical and durable single-layer red mud biogas bags, which greatly reduces the procurement cost of biogas bags; the inlet and outlet air pipes use the bottom air intake form to avoid frequent wear and tear on the biogas bags, further reducing the maintenance cost of biogas bags; the height of the biogas bag is monitored by the top, which can more intuitively reflect the inflation situation and facilitate the control of the inlet and outlet flow of the biogas bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 The utility model is a schematic diagram of the structure of the condensate water seal device.

[0018] The following are the names corresponding to the label numbers in this utility model:

[0019] 1-biogas storage bag, 2-biogas inlet pipe, 3-biogas inlet pipe sleeve, 4-biogas outlet pipe, 5-biogas outlet pipe sleeve, 6-water seal tank water supply pipe, 7-water level control float valve, 8-water seal overflow port, 9-water seal overflow port connection pipe, 10-biogas water seal tank, 11-biogas bag height monitoring device, 12-biogas inlet pipe condensate water seal box, 13-biogas outlet pipe condensate water seal box, 14-water level control ball valve, 15-overflow pipe, 16-sewage pipe, 17-condensate ball valve, 18-water level line, 19-condensate water pipe. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solution of the present invention in detail.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model. Figure 2 The structure of the condensate water seal device in the utility model is shown in FIG. Figure 1-2 As shown: The utility model provides a small-scale biogas storage system, including a biogas storage bag 1, a biogas air inlet pipe 2, a biogas air inlet pipe sleeve 3, a biogas air outlet pipe 4, a biogas air outlet pipe sleeve 5, a water seal tank water supply pipe 6, a water level control float valve 7, a water seal overflow port 8, a water seal overflow port pipe 9, a biogas water seal tank 10, a biogas bag height monitoring device 11, a biogas air inlet pipe condensate water seal box 12, and a biogas air outlet pipe condensate water seal box 13.

[0022] The biogas storage bag 1 is connected to the biogas water seal tank 10 and fixed to the wall of the water seal tank by expansion screws and hooks; the biogas inlet pipe 2 penetrates the biogas inlet pipe sleeve 3, and fixed flat steels can be set at both ends of the inner part of the inlet sleeve to weld and fix the inlet pipe, and the inlet sleeve can be fixed to the bottom of the water seal tank with a channel steel bracket; the biogas outlet pipe 4 is led out from the biogas outlet pipe sleeve 5, and fixed flat steels can be set at both ends of the inner part of the outlet sleeve to weld and fix the outlet pipe, and the outlet sleeve can be fixed to the bottom of the water seal tank with a channel steel bracket; the water seal tank water supply pipe 6 and the water level control float The ball valve 7 is connected to control the height of the water replenishment water level, the water seal overflow port 8 is connected to the water seal overflow port pipe 9 to avoid timely discharge of the water seal pool when the water level rises in rainy conditions; the biogas bag height monitoring device 11 adopts a round steel bracket and is fixed to the top of the water seal pool with anchor bolts; condensate pipes are set at the low points of the biogas inlet and outlet pipes, which are respectively connected to the inlet pipe condensate water seal box 12 and the outlet pipe condensate water seal box 13. The condensate water seal box controls the water level through the float valve and the overflow port, and discharges the moisture in the biogas inlet and outlet pipes in time to avoid corrosion to the inlet and outlet pipes.

[0023] Figure 2 The structure of the condensate water seal device in the utility model is shown in FIG. Figure 2 As shown: the condensate water seal devices at the biogas inlet and outlet of the utility model are arranged symmetrically. Figure 2The values ​​given in can be regarded as the biogas inlet, see Figure 2 The air inlet pipe condensate water seal box 12 is provided with a water level control ball valve 14, an overflow pipe 15, a sewage pipe 16, and a condensate ball valve 17. The condensate ball valve 17 is located below the biogas inlet pipe 2. The condensate ball valve 17 is a normally open ball valve. The sewage pipe 16 is located at the lower end of the condensate water seal device. The overflow pipe 15 is located in the upper half of the condensate water seal device. The water level line 18 is located about 5-10 cm above the lower end of the condensate water pipe 19.

[0024] The biogas storage bag and the biogas water seal tank in the utility model are connected by a hook, so that the biogas storage bag can be fixed in the water seal tank and can be expanded by air intake and contracted by air deflation at the same time.

[0025] The casing of the biogas inlet pipe is fixed to the bottom of the biogas water seal tank with channel steel, and is sealed with a flange gasket at the wall of the water seal tank. An elbow is added downward at the outlet to avoid wear on the biogas bag. It is coordinated with the inlet pipe during production and welded in sections. The biogas inlet pipe is passed into the casing to avoid acid corrosion caused by direct contact between the biogas and the inlet pipe, so as to increase the maintenance cycle.

[0026] The casing of the biogas outlet pipe is fixed to the bottom of the biogas water seal tank with channel steel, and is sealed with a flange gasket at the wall of the water seal tank. An elbow is added downward at the outlet to avoid wear on the biogas bag. It is coordinated with the outlet pipe during production and welded in sections. The biogas outlet pipe is led out from the casing to avoid acid corrosion caused by direct contact between the biogas and the outlet pipe, so as to increase the maintenance cycle.

[0027] The water seal pool water supply pipe is connected to the water seal control float valve to replenish the water seal pool in real time, and the water seal overflow port is connected to the water seal overflow port pipe to control the water level in the water seal pool and avoid leakage of the biogas storage bag.

[0028] Through the biogas bag height monitoring device, real-time monitoring of the biogas bag gas storage situation can be achieved to ensure the safe operation of the gas storage bag.

[0029] A condensate pipe is set at the low point of the biogas inlet and outlet pipes, and is connected to the condensate water seal box of the inlet and outlet pipes to facilitate the timely discharge of moisture in the biogas and avoid corrosion to the inlet and outlet pipes.

[0030] The biogas storage bag and the biogas water seal tank are connected by a hook, so that the biogas storage bag can be fixed in the water seal tank while being able to freely expand when air is taken in and contract when air is deflated, ensuring that there is a certain adjustment space for the storage bag when air is taken in and out. The biogas bag is located in the water seal tank to avoid the influence of external wind on the biogas bag. A height monitoring device is installed on the top to control the biogas inlet and outlet flow by observing the height changes of the storage bag.

[0031] The biogas inlet and outlet pipes both adopt an inlet and outlet pipe sleeve structure to avoid direct contact with the water seal in the water seal tank and cause acid corrosion and gas leakage; the biogas enters and exits through the bottom of the biogas bag and has no connection with the biogas bag itself to avoid damage to the connection between the inlet and outlet pipes when the biogas bag is inflated and deflated.

[0032] The water seal liquid level in the biogas water seal tank is balanced through the water supply pipe, which controls the ball valve and the overflow port to make the water seal water level constant, ensuring that the bottom of the biogas bag is always below the water seal to avoid leakage at the bottom of the gas storage bag.

[0033] Condensate pipes are set at the low points of the biogas inlet and outlet pipes, and connected to the inlet and outlet condensate water seal boxes to facilitate timely discharge of moisture in the biogas and avoid corrosion to the inlet and outlet pipes.

[0034] In the specific implementation process, the biogas bag adopts PVC red mud biogas bag, which is resistant to oxidation, corrosion and has a long service life.

[0035] The biogas inlet and outlet pipes and casing are made of 304 stainless steel pipes to improve the corrosion resistance of the material and avoid frequent maintenance.

[0036] The condensate water seal box of the biogas inlet pipe and the condensate water seal box of the biogas outlet pipe are both made of 304 stainless steel to improve the corrosion resistance of the material to avoid frequent maintenance.

[0037] The working process of the system of the utility model is: after the biogas inlet pipe 2 and the sleeve pipe 3 and the biogas outlet pipe 4 and the sleeve pipe 5 are installed and fixed, the biogas inlet and outlet pipes are connected to the condensate pipe, respectively passed into the biogas inlet pipe condensate water seal box 12 and the biogas outlet pipe condensate water seal box 13, and the two water seal boxes are filled with water to the normal water level, and then the biogas storage bag 1 is fixed to the wall of the biogas water seal tank 10 through expansion screws and hooks, and then the water is replenished into the biogas water seal tank 10 through the water seal replenishment pipe 6 and the water level control float valve 7. After the float valve sets the water level, the water replenishment is automatically stopped, and then biogas is filled into the biogas bag through the biogas inlet pipe 2, and the biogas bag slowly swells up. After the biogas bag height is in place, the biogas outlet pipe 4 is controlled by the biogas bag height monitoring device 11 to supply gas to the user. In case of rising water level due to rain, the water is drained through the water seal overflow port 8 and the water seal overflow port pipe 9 to ensure that the water seal water level is normal.

[0038] The utility model combines the characteristics of the equipment and the system to store biogas safely, which can avoid safety accidents caused by biogas leakage on the one hand, and reduce the purchase and maintenance costs of biogas bags by optimizing the water seal system on the other hand.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A small-scale biogas storage system, characterized in that: The small-scale biogas storage system comprises: a biogas storage bag, a biogas inlet pipe, a biogas inlet pipe sleeve, a biogas outlet pipe, a biogas outlet pipe sleeve, a water seal tank water supply pipe, a water level control float valve, a water seal overflow port, a water seal overflow port pipe, a biogas water seal tank, a biogas bag height monitoring device, a biogas inlet pipe condensate water seal box, and a biogas outlet pipe condensate water seal box; The biogas storage bag is fixed on the wall of the biogas water seal tank, the biogas bag height monitoring device is fixed on the top of the water seal tank, the biogas inlet pipe sleeve and the biogas outlet pipe sleeve are both fixed on the bottom of the biogas water seal tank, the biogas inlet pipe penetrates into the biogas inlet pipe sleeve, and the biogas outlet pipe is led out from the biogas outlet pipe sleeve; The water seal tank water supply pipe is fixed on the pool wall of the biogas water seal tank; the water level control float valve is located in the biogas water seal tank, the water seal tank water supply pipe is connected to the water level control float valve, and the water seal overflow port is connected to the water seal overflow port pipe; the water seal overflow port is opened on the pool wall of the biogas water seal tank; the water seal overflow port pipe is located outside the biogas water seal tank; The biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are both located outside the biogas water seal tank, and the biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are respectively located below the biogas inlet pipe and the biogas outlet pipe.

2. The small-scale biogas storage system according to claim 1 is characterized in that: The biogas bag height monitoring device is a device made of a round steel bracket, and the biogas bag height monitoring device is fixed to the top of the biogas water seal tank with anchor bolts.

3. The small-scale biogas storage system according to claim 1 is characterized in that: The biogas storage bag is fixed on the wall of the biogas water seal tank through expansion screws and hooks.

4. The small-scale biogas storage system according to claim 1 is characterized in that: Fixed flat steels can be arranged at both ends of the inlet and outlet casings and welded to the outlet pipes, and the inlet and outlet casings can be fixed to the bottom of the water seal tank with channel steel brackets.

5. The small-scale biogas storage system according to claim 1 is characterized in that: Condensate pipes are set at the low points of the biogas inlet and outlet pipes, which are respectively connected to the condensate water seal box of the inlet pipe and the condensate water seal box of the outlet pipe. The condensate water seal box controls the water level through the float valve and the overflow port to discharge the moisture in the biogas inlet and outlet pipes in time to avoid corrosion to the inlet and outlet pipes.

6. The small-scale biogas storage system according to claim 1 is characterized in that: The biogas storage bag is a PVC red mud biogas bag.

7. The small-scale biogas storage system according to claim 1 is characterized in that: The biogas inlet and outlet pipes and casings are made of 304 stainless steel pipes; the biogas inlet pipe condensate water seal box and the biogas outlet pipe condensate water seal box are made of 304 stainless steel box.

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