Biogas water-sealed tank
By utilizing the water level difference between the pressure balance chamber and the inlet/outlet gas chamber in the biogas water seal tank with a dual-chamber structure, the problem of water level control is solved, and automated operation of the biogas water seal tank is achieved, reducing manual intervention and equipment costs.
Patent Information
- Application Number
- CN202422986805.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In the existing biogas water seal tank, the water level is difficult to control during the biogas treatment process, requiring frequent water replenishment or drainage, which leads to troublesome operation and high cost. The PLC control structure is also complex and uneconomical.
The biogas water seal tank with a dual-chamber structure divides the tank into an inlet/outlet chamber and a pressure balance chamber by a partition plate. It uses pressure changes to convert them into water level differences, preventing biogas leakage, simplifying operation and reducing manual intervention.
It enables automatic water level adjustment during biogas pressure changes, preventing biogas leaks, simplifying the operation process, and reducing labor and equipment costs.
Smart Images
Figure CN223807023U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the biogas treatment technical field especially relates to a kind of biogas water seal tank applied to biogas combustion torch front end. BACKGROUND
[0002] In the treatment process of biogas, water seal tank is an indispensable separation equipment, the main role of water seal tank is to form pressure by adding certain water in water seal tank, so as to seal the medium (generally gas) in the tank body connected in front of water seal tank, the biogas after water seal tank is treated or utilized, the biogas produced by small volume anaerobic reactor is small, in order to not pollute atmosphere, biogas torch automatic combustion is usually equipped, water is usually carried in the biogas produced from anaerobic reactor, and biogas torch automatic combustion after water seal tank needs to maintain pressure in a certain range, which leads to that water level in water seal tank is difficult to control, water seal tank needs to be frequently watered or drained to maintain normal water pressure, manual water supply and drainage operation is troublesome, labor-intensive, PLC control structure is complex and high in cost, and it is not economical. CONTENT OF UTILITY MODEL
[0003] The utility model provides a kind of biogas water seal tank to solve the problems mentioned in the above background.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] A kind of biogas water seal tank, including tank body, biogas inlet pipe and biogas outlet pipe, overflow pipe, air pipe, emptying pipe, it is characterized in that the tank body is divided into inlet-outlet cavity and pressure balance cavity by a partition, the partition only has bottom open communication hole to communicate inlet-outlet cavity and pressure balance cavity, the biogas inlet pipe and biogas outlet pipe are arranged at the top of inlet-outlet cavity, the air pipe is arranged at the top of pressure balance cavity, the overflow pipe is arranged in the side wall of pressure balance cavity, the air pipe is arranged at the top end of balance pressure chamber, so that atmosphere and air in balance pressure chamber are communicated, the emptying pipe is arranged in the side wall of tank body, close to the position of tank body bottom.
[0006] In a specific embodiment, the communication hole can be one or more circular holes with a diameter of 10 cm attached to the tank bottom, or the entire bottom edge of the partition can be raised by 10 cm without being connected to the tank bottom, forming the communication of the two side cavities.
[0007] In a specific embodiment, the pipe opening of the biogas inlet pipe in the tank is higher than the upper edge of the communication hole, preventing biogas from leaking into the pressure balance cavity through the communication hole.
[0008] In one specific embodiment, the gas inlet and outlet cavity tank bottom is provided with a gas baffle, the bottom edge and side edge of the gas baffle is connected with the tank body, the height is higher than the lower pipe opening position of the biogas inlet pipe and the upper edge of the communication hole, and the biogas inlet pipe and the communication hole are separated on both sides, so that the leakage of biogas through the communication hole into the pressure balance cavity when the yield is too large can be more effectively prevented.
[0009] In one specific embodiment, the position of the lower edge of the overflow pipe is 30 cm higher than the lower pipe opening position of the biogas inlet pipe.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] The utility model discloses simple structure, convenient operation, clever idea can pass the pressure change of the gas inlet and outlet cavity in the tank body is converted into the water level difference change of the gas inlet and outlet cavity and pressure balance cavity, thereby guaranteeing that the water amount in the whole tank body will not be emptied because of the large gas pressure, resulting in the leakage of biogas. The above-mentioned description is only the summary of the technical scheme of the utility model, and the following will be described in detail with the preferred embodiment of the utility model in cooperation with the description of the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0012] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the application, and the illustrative embodiment and the description of the utility model are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:
[0013] Figure 1 It is the structure schematic view of one embodiment of the utility model;
[0014] Figure 2 It is the working state diagram of the utility model: the pressure boosting stage;
[0015] Figure 3 It is the working state diagram of the utility model: the pressure reducing stage;
[0016] Wherein, 1, tank body;2 gas inlet and outlet cavity;3, pressure balance cavity;4, partition;5, biogas inlet pipe;6, biogas outlet pipe;7, air pipe;8, communication hole;9, gas baffle;10, emptying pipe;11, overflow pipe. DETAILED DESCRIPTION
[0017] The principles and characteristics of the utility model are described below in conjunction with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model. According to the following description and claims, the advantages and characteristics of the utility model will be more clear. It should be noted that the drawings are very simplified and use non-precise proportions, only to facilitate, clear and assist the purpose of explaining the embodiment of the utility model.
[0018] In the prior art, the general water seal tank is single cavity type, only to block the air connection between the front tank of the water seal tank and the rear end equipment, to prevent backfire, when the biogas pressure required by the rear end equipment does not need to be changed, the water level in the water seal tank is generally not changed, and the water level does not need to be adjusted frequently, but at present, the automatic combustion torch is often connected behind the water seal tank in the industry, the purpose is to accumulate the generated biogas to a certain pressure and then automatically ignite and burn it off to prevent air pollution, and the operating principle of the automatic combustion torch is that when the biogas pressure behind the water seal tank reaches 2.5KPa, the torch automatically ignites and burns, and the pressure decreases, when the pressure decreases to below 0.5KPa, the torch stops burning, and waits for the biogas to accumulate to make the pressure reach the burning pressure limit value again, thus causing the pressure in the water seal tank to change periodically, and in actual application, the change of the pressure in the water seal tank will make the water level in the single cavity water seal tank lower and lower, eventually leading to biogas leakage.
[0019] As shown in Figure 1 The utility model provides a kind of biogas water seal tank, including tank 1, biogas inlet pipe 5 and biogas outlet pipe 6, overflow pipe 11, vent pipe 7, emptying pipe 10, it is characterized in that the tank 1 is divided into inlet-outlet cavity 2 and pressure balance cavity 3 by a partition 4, the partition 4 only bottom is opened communication hole 8, and inlet-outlet cavity 2 and pressure balance cavity 3 are communicated, the biogas inlet pipe 5 and biogas outlet pipe 6 are arranged at the top of inlet-outlet cavity 2, the vent pipe 7 is arranged at the top of pressure balance cavity 3, so that atmosphere and balance pressure cavity 3 air are communicated, the overflow pipe 11 is arranged in the side wall of pressure balance cavity 3, and the emptying pipe 10 is arranged in the side wall of tank 1, close to the bottom position of tank 1.
[0020] The communication hole 8 can be one or more circular holes with a diameter of 10 cm attached to the tank bottom.
[0021] Preferably, the communication hole 8 is raised by 10 cm along the bottom edge of the partition 4, not connected to the tank bottom, and the two cavity bodies are better connected.
[0022] The lower pipe opening of the biogas inlet pipe 5 is higher than the upper edge of the communication hole 8, preventing biogas from leaking into the pressure balance cavity 3 through the communication hole.
[0023] Preferably, a gas baffle 9 is arranged at the bottom of the biogas inlet-outlet cavity 2, the bottom edge and side edge of the gas baffle 9 are connected to the tank 1, the height is higher than the lower pipe opening position of the biogas inlet pipe 5 and the upper edge of the communication hole 8, and the biogas inlet pipe 5 and the communication hole 8 are separated on both sides, which can more effectively prevent biogas from leaking into the pressure balance cavity 3 through the communication hole 8 when the yield is too large.
[0024] The lower edge of the overflow pipe 11 is 30 cm higher than the lower pipe opening position of the biogas inlet pipe 5, and in actual application, the maximum liquid level difference between the two sides is 25 cm, so 30 cm can ensure that the lower pipe opening of the biogas inlet pipe 5 does not expose the water surface under the maximum pressure.
[0025] The working principle of the utility model is explained in detail as follows.
[0026] In practical application, the biogas inlet pipe 5 is connected with the front tank body of the water seal tank, the biogas outlet pipe 6 is connected with the automatic combustion torch, in the pressure increasing stage, the torch does not burn, the pressure in the inlet and outlet cavity 2 is continuously increased, the liquid level in the cavity is decreased, the air in the upper part of the pressure balance cavity 3 is connected with the atmosphere through the air pipe 7, so the liquid level in the pressure balance cavity 3 is increased, until the torch ignition pressure 2.5KPa is reached, the liquid level in the pressure balance cavity 3 is 25cm higher than that in the inlet and outlet cavity 2, the biogas generally carries water, when the total water quantity in the tank body 1 is too much in this stage, the water is discharged through the overflow pipe 11, if the water quantity in the tank body 1 is not much, the liquid level in the pressure balance cavity is lower than the pipe opening of the overflow pipe 11, so the water is not discharged, after the torch is ignited, the biogas is burned to enter the pressure decreasing stage, the pressure in the inlet and outlet cavity 2 is decreased, the liquid level is increased, the liquid level in the pressure balance cavity 3 is decreased, until the liquid level in the inlet and outlet cavity 2 and the pressure balance cavity 3 is balanced, the torch is extinguished, the next pressure increasing cycle is carried out, so the utility model only needs to add sufficient water when it is used for the first time, and no water supplement or water discharge is needed subsequently, which is very practical and convenient.
[0027] The above content is the further detailed description of the utility model combined with the preferred embodiment, and cannot be considered as the limitation of the specific implementation of the utility model, any ordinary technical personnel in the industry can implement the utility model according to the drawings and the above description, for the ordinary technical personnel in the technical field of the utility model, without departing from the concept of the utility model, a number of simple deductions and replacements can be made, which should be considered as the protection range of the utility model.
Claims
1. A water sealed tank for biogas comprising a tank body (1), a biogas inlet pipe (5) and a biogas outlet pipe (6), an overflow pipe (11), a vent pipe (7), a venting pipe (10), characterised in that The tank body (1) is divided into an inlet and outlet cavity (2) and a pressure balance cavity (3) by a partition plate (4), the partition plate (4) has only a bottom communicating hole (8) to communicate the inlet and outlet cavity (2) and the pressure balance cavity (3), the biogas inlet pipe (5) and the biogas outlet pipe (6) are arranged at the top of the inlet and outlet cavity (2), the vent pipe (7) is arranged at the top of the pressure balance cavity (3) to communicate the atmosphere and the air in the pressure balance cavity (3), the overflow pipe (11) is arranged on the side wall of the pressure balance cavity (3), and the emptying pipe (10) is arranged on the side wall of the tank body (1) and close to the bottom of the tank body (1).
2. A water sealed biogas tank according to claim 1, characterized in that The communicating hole (8) is one or more circular holes with a diameter of 10 cm close to the tank bottom.
3. The water sealed biogas tank according to claim 1, wherein, The communicating hole (8) is to raise the bottom edge of the whole partition plate (4) by 10 cm and not connected with the tank bottom to form a through hole of the two side cavities.
4. The water sealed biogas tank of claim 1, wherein, The lower pipe opening of the biogas inlet pipe (5) is higher than the upper edge of the communicating hole (8).
5. The water sealed biogas tank of claim 1, wherein, The biogas inlet and outlet cavity (2) is provided with a gas baffle (9) at the bottom, the bottom edge and the side edge of the gas baffle (9) are connected with the tank body (1), the height is higher than the position of the lower pipe opening of the biogas inlet pipe (5) and the upper edge of the communicating hole (8), and the biogas inlet pipe (5) and the communicating hole (8) are separated on both sides.
6. The water sealed biogas tank of claim 1, wherein, The lower edge of the overflow pipe (11) is 30 cm higher than the position of the lower pipe opening of the biogas inlet pipe (5).