Automatic gas blocking and water draining device for biogas pipeline
By designing an automated biogas pipeline drainage device, the condensate is automatically extruded by the up and down movement of the ocean ball, the problem of high manual and periodic drainage in the prior art is solved, and the automatic drainage and safe operation of the biogas pipeline is achieved.
Patent Information
- Application Number
- CN202421723180.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-20
AI Technical Summary
The existing biogas pipeline drainage device requires manual valve opening and drainage regularly, which consumes high labor costs and is prone to blockage of pipelines due to negligence in operation, affecting the normal use of biogas.
An automatic gas barrier drainage device for biogas pipelines is designed, including biogas pipelines, drainage pipes, throat pipes, ocean balls, reducer pipes, water storage pipes and water outlet pipes. The condensate is automatically squeezed out by the up and down movement of the ocean balls to prevent the biogas from evacuating, and prevent the entry of external air and condensate water during negative pressure.
The automatic drainage of biogas pipelines is realized, which reduces manual operation costs, avoids pipeline blockage and corrosion, and improves the safety and reliability of biogas operation.
Smart Images
Figure CN222864716U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of biogas engineering, and in particular relates to an automatic gas blocking and drainage device for a biogas pipeline. Background Art
[0002] Biogas is a combustible gas produced by the fermentation of organic matter under anaerobic conditions by microorganisms. Since this gas was first discovered in swamps, it is called biogas. Various organic matter such as human and animal feces, straw, sewage, etc. are fermented under anaerobic conditions in a closed biogas tank, that is, they are decomposed and transformed by a wide variety of biogas fermentation microorganisms to produce biogas.
[0003] Biogas has a long history of being used as an energy source. At first, biogas in my country was mainly used in rural household biogas digesters. In the early 1970s, in order to solve the problem of straw burning and insufficient fuel supply, the Chinese government promoted biogas in rural areas. The biogas produced by biogas digesters was used for cooking in rural households and gradually developed to lighting and heating. my country's large and medium-sized biogas projects began in 1936. Since then, the establishment of large and medium-sized wastewater, aquaculture sewage, village and town biomass waste, and urban garbage biogas has broadened the scope of biogas production and use. With the development of my country's economy, the improvement of people's living standards, and the development of industry, agriculture, and aquaculture, large waste fermentation biogas projects will continue to be a practical and effective method for my country's renewable energy utilization and environmental protection.
[0004] When biogas is produced from anaerobic fermentation equipment, it contains a lot of water, especially high-temperature fermentation and medium-temperature fermentation. During the pipeline distribution process, due to changes in temperature and pressure, the dew point decreases, and water is separated from the biogas, causing two-phase flow in the distribution system, increasing the resistance of the system and even clogging the pipeline. The combined effect of water and hydrogen sulfide in the biogas will also accelerate the corrosion of the pipeline, valves and flow meters. Therefore, a drainage device must be installed in the biogas pipeline.
[0005] At present, the most common solution is to connect a vertical downward drainage pipe to the lowest point of the pipeline, install a valve on the drainage pipe, and manually open the valve regularly to drain the water in the pipeline to ensure the normal operation of the biogas pipeline. On the one hand, this method consumes high labor costs. On the other hand, if the operator forgets to drain the water for a long time, it will cause too much water to accumulate in the pipeline, resulting in blockage of the biogas pipeline, and the biogas cannot be discharged normally, affecting the normal use of biogas. Utility Model Content
[0006] To solve the problems raised in the above background technology, the utility model provides an automatic gas blocking and drainage device for a biogas pipeline, which has the characteristics of simple structure, low cost, reliable operation, convenient use, high degree of automatic operation, and increased safety of biogas operation.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic gas blocking and drainage device for a biogas pipeline, comprising a biogas pipeline, a drain pipe, a throat, an ocean ball, a reducer, a water storage pipe and a water outlet pipe, the drain pipe is connected to the biogas pipeline, the water outlet end of the drain pipe is connected to the throat, an ocean ball is movably arranged in the throat, the water outlet end of the throat is connected to the reducer, the water outlet end of the reducer is connected to the water storage pipe, and the water outlet end of the water storage pipe is connected to the water outlet pipe.
[0008] Preferably, the drainage pipe is located directly below the lowest point of the biogas pipeline.
[0009] Preferably, the diameters of the drain pipe, the water storage pipe and the water outlet pipe are all smaller than the diameter of the throat pipe.
[0010] Preferably, the diameter of the ocean ball is smaller than the inner diameter of the throat, so that the ocean ball can move freely up and down inside the throat.
[0011] Preferably, a valve is provided on the water outlet pipe.
[0012] Preferably, the throat pipe comprises a tapered pipe, a first connecting pipe and a second connecting pipe, the tapered pipe is fixedly connected to the first connecting pipe, and the first connecting pipe and the second connecting pipe are fixedly connected via a first connecting flange.
[0013] Preferably, the diameters of the first connecting pipe and the second connecting pipe are both larger than the diameter of the drain pipe.
[0014] Preferably, the water storage pipe includes a U-shaped pipe and a third connecting pipe, one end of the U-shaped pipe is connected to the water outlet pipe, the other end of the U-shaped pipe is connected to the third connecting pipe through a second connecting flange, and the third connecting pipe is connected to the reducer.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] When the biogas pipeline is under positive pressure, the utility model can squeeze out condensed water from the water outlet pipe while the ocean ball moves downward, and can prevent biogas from being blown into the outside atmosphere through the water outlet pipe; when the biogas pipeline is under negative pressure, the ocean ball moves upward to prevent outside air and condensed water in the device from entering the biogas pipeline, so that the device has the advantages of low investment, small space occupation, easy operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0018] Figure 1This is a side view of the structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the biogas pipeline of the utility model operating at normal pressure;
[0021] Figure 4 This is a schematic diagram of the positive pressure operation structure of the biogas pipeline of the utility model;
[0022] Figure 5 This is a schematic diagram of the negative pressure operation structure of the biogas pipeline of the utility model;
[0023] In the figure: 1. biogas pipeline; 2. drainage pipe; 3. throat; 4. first connecting flange; 5. ocean ball; 6. reducer; 7. water storage pipe; 8. water outlet pipe; 9. valve; 10. second connecting flange. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example
[0025] See also Figure 1-5 , the present embodiment provides the following technical solutions: an automatic gas blocking and drainage device for a biogas pipeline, comprising a biogas pipeline 1, a drainage pipe 2, a throat pipe 3, an ocean ball 5, a reducer 6, a water storage pipe 7 and a water outlet pipe 8, the drainage pipe 2 is connected to the biogas pipeline 1, the water outlet end of the drainage pipe 2 is connected to the throat pipe 3, an ocean ball 5 is movably arranged in the throat pipe 3, the water outlet end of the throat pipe 3 is connected to the reducer 6, the water outlet end of the reducer 6 is connected to the water storage pipe 7, and the water outlet end of the water storage pipe 7 is connected to the water outlet pipe 8; when the biogas pipeline 1 is under positive pressure operation, the condensed water can be squeezed out of the water outlet pipe 8 while the ocean ball 5 moves downward, and the biogas can be prevented from being blown into the outside atmosphere through the water outlet pipe 8; when the biogas pipeline 1 is under negative pressure operation, the ocean ball 5 moves upward to prevent the outside air and the condensed water in the device from entering the inside of the biogas pipeline 1, so that the device has the advantages of low investment, small space occupation, convenient operation and high safety.
[0026] The drain pipe 2 is located directly below the lowest point of the biogas pipe 1 , so that the condensed water in the biogas pipe 1 can be easily drained into the drain pipe 2 .
[0027] The diameters of the drain pipe 2, the water storage pipe 7 and the water outlet pipe 8 are all smaller than the diameter of the throat pipe 3, so that the drain pipe 2 or the water storage pipe 7 can be sealed when the ocean ball 5 moves upward or downward.
[0028] The diameter of the ocean ball 5 is smaller than the inner diameter of the throat 3 , so that the ocean ball 5 can move freely up and down inside the throat 3 .
[0029] The water outlet pipe 8 is provided with a valve 9, through which the water outlet pipe 8 can be manually operated to perform a regular drainage operation.
[0030] The throat pipe 3 includes a tapered pipe, a first connecting pipe and a second connecting pipe. The tapered pipe is fixedly connected to the first connecting pipe. The first connecting pipe and the second connecting pipe are fixedly connected via a first connecting flange 4. Through the first connecting flange 4, the ocean ball 5 can be replaced or the inside of the throat pipe 3 can be cleaned after the throat pipe 3 is disassembled and assembled.
[0031] In this embodiment, the conical core tube and the first connecting tube are integrally provided.
[0032] The diameters of the first connecting pipe and the second connecting pipe are both larger than the diameter of the drain pipe 2 , which can enable the ocean ball 5 to move in the throat pipe 3 while preventing the ocean ball 5 from moving out of the throat pipe 3 .
[0033] The water storage pipe 7 includes a U-shaped pipe and a third connecting pipe. One end of the U-shaped pipe is connected to the water outlet pipe 8, and the other end of the U-shaped pipe is connected to the third connecting pipe through a second connecting flange 10. The third connecting pipe is connected to the reducer 6. Through the second connecting flange 10, the U-shaped pipe can be disassembled and assembled, and the inner wall of the U-shaped pipe can be cleaned.
[0034] In this embodiment, the reducer 6 and the second connecting pipe are integrally provided.
[0035] The working principle of the utility model is as follows: Figure 1 As shown in the figure, shortly after the initial operation of the biogas pipeline 1, that is, when the biogas is just introduced into the pipeline, there is no condensed water in the biogas pipeline 1 and the drainage device, and the ocean ball 5 in the throat pipe 3 remains in close contact with the lower part of the throat pipe 3 under the action of its own gravity. Since the inner diameter of the water storage pipe 7 at the end of the throat pipe 3 is smaller than the outer diameter of the ocean ball 5, the ocean ball 5 will not enter the water storage pipe 7 from the throat pipe 3. Due to the sealing effect of the ocean ball 5, the biogas in the biogas pipeline 1 will not escape to the outside atmosphere through the drainage pipe 2.
[0036] like Figure 3As shown in the figure, when the biogas pipeline 1 has been running for a period of time and condensed water is generated, when the gas pressure in the biogas pipeline 1 is the same as the external atmospheric pressure, that is, when the booster fan is not running, the condensed water gathers on the upper part of the ocean ball 5. When more and more condensed water gathers on the upper part of the ocean ball 5, the buoyancy of the ocean ball 5 is greater than its own gravity, and the ocean ball 5 moves upward. A gap is left between the ocean ball 5 and the lower part of the throat 3. The condensed water entering the upper part of the throat 3 enters the water storage pipe 7 through the gap between the ocean ball 5 and the throat 3. The water level at the end of the water storage pipe 7 gradually increases with the increase of condensed water. When the water level reaches the height of the outlet pipe 8, the condensed water is finally discharged from the outlet.
[0037] like Figure 4 In the process, the gas pressure in the biogas pipeline 1 is greater than the external atmospheric pressure and operates at positive pressure, that is, the pipeline at the rear end of the booster fan, the gas pressure borne by the ocean ball 5 in the throat pipe 3 is greater than the buoyancy of the water, the ocean ball 5 moves downward and squeezes the excess water in the water storage pipe 7 out of the water pipe 8, and the ocean ball 5 in the throat pipe 3 remains in close contact with the lower part of the throat pipe 3, preventing the biogas from escaping into the outside air through the drain pipe 2.
[0038] like Figure 5 As shown, the gas pressure in the biogas pipeline 1 is less than the atmospheric pressure and the negative pressure operation is performed, that is, the pipeline located at the front end of the booster fan, the upward suction force borne by the ocean ball 5 in the throat pipe 3 is greater than its own gravity, the ocean ball 5 moves upward and keeps close contact with the upper part of the throat pipe 3, and at the same time, the condensed water at the bottom of the ocean ball 5 moves upward due to the pressure of the external atmosphere. Since the outer diameter of the ocean ball 5 is larger than the inner diameter of the drain pipe 2, the ocean ball 5 will not enter the drain pipe 2 from the throat pipe 3, and under the sealing effect of the ocean ball 5, the outside air and the condensed water in the drainage device are prevented from entering the biogas pipeline 1 through the drain pipe 2, thereby ensuring the safe operation of the biogas.
[0039] When the drain pipe 2, throat pipe 3 and water storage pipe 7 are blocked or the ocean ball 5 needs to be replaced, the first connecting flange 4 and the second connecting flange 10 are opened, and the throat pipe 3 or water storage pipe 7 is removed for cleaning and replacement;
[0040] When the ocean ball 5 is damaged and there is no spare part to replace it, the valve 9 at the end can be temporarily used for manual regular drainage.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A biogas pipeline automatic gas blocking and drainage device, characterized by: The invention comprises a biogas pipeline (1), a drainage pipe (2), a throat pipe (3), an ocean ball (5), a reducer (6), a water storage pipe (7) and a water outlet pipe (8), wherein the drainage pipe (2) is connected to the biogas pipeline (1), the water outlet end of the drainage pipe (2) is connected to the throat pipe (3), the ocean ball (5) is movably arranged in the throat pipe (3), the water outlet end of the throat pipe (3) is connected to the reducer (6), the water outlet end of the reducer (6) is connected to the water storage pipe (7), and the water outlet end of the water storage pipe (7) is connected to the water outlet pipe (8).
2. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 1, characterized in that: The drainage pipe (2) is located directly below the lowest point of the biogas pipeline (1).
3. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 2, characterized in that: The diameters of the drainage pipe (2), the water storage pipe (7) and the water outlet pipe (8) are all smaller than the diameter of the throat pipe (3).
4. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 3, characterized in that: The diameter of the ocean ball (5) is smaller than the inner diameter of the throat pipe (3), so that the ocean ball (5) can move freely up and down inside the throat pipe (3).
5. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 1, characterized in that: The water outlet pipe (8) is provided with a valve (9).
6. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 4, characterized in that: The throat pipe (3) comprises a tapered pipe, a first connecting pipe and a second connecting pipe, the tapered pipe is fixedly connected to the first connecting pipe, and the first connecting pipe and the second connecting pipe are fixedly connected via a first connecting flange (4).
7. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 6, characterized in that: The diameters of the first connecting pipe and the second connecting pipe are both larger than the diameter of the drainage pipe (2).
8. The automatic gas blocking and drainage device for a biogas pipeline (1) according to claim 3, characterized in that: The water storage pipe (7) comprises a U-shaped pipe and a third connecting pipe, one end of the U-shaped pipe is connected to the water outlet pipe (8), the other end of the U-shaped pipe is connected to the third connecting pipe via a second connecting flange (10), and the third connecting pipe is connected to the reducer (6).