CN113109208B - Concentration detection method for circulating methane tank - Google Patents
Concentration detection method for circulating methane tank Download PDFInfo
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- CN113109208B CN113109208B CN202110236325.XA CN202110236325A CN113109208B CN 113109208 B CN113109208 B CN 113109208B CN 202110236325 A CN202110236325 A CN 202110236325A CN 113109208 B CN113109208 B CN 113109208B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
- G01N7/18—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by allowing the material to react
- G01N7/20—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by allowing the material to react the reaction being fermentation
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Abstract
The invention relates to the technical field of concentration detection of biogas tanks, in particular to a concentration detection method of a circulating biogas tank, which comprises the following concentration detection methods: s1: preparing a methane tank, arranging a guide wheel in the methane tank, arranging a pull rope on the guide wheel, tying a balloon at one end of the pull rope, and filling safety gas into the balloon, wherein the mass fraction of the safety gas is 18-25; s2: a vertical cylinder is arranged at the top of the methane tank, a spiral spring is vertically arranged at the upper part of the inner part of the vertical cylinder, the spiral spring is sleeved on a mounting shaft, an observation window is arranged on the vertical cylinder corresponding to the indication needle, and then the upper part, the middle part and the lower part of the outer wall of the observation window are marked with characters of high concentration, low concentration and safety in sequence; the invention realizes ingenious monitoring of the concentration of the biogas in the biogas digester, avoids danger caused by detecting the biogas digester by using the electrified equipment, and improves the safety of concentration detection.
Description
Technical Field
The invention relates to the technical field of concentration detection of biogas tanks, in particular to a concentration detection method of a circulating biogas tank.
Background
The methane tank is a facility for producing methane, and the methane is a combustible gas produced by the fermentation of organic substances under the conditions of certain temperature, humidity and pH value in an anaerobic environment.
After the biogas digester in the prior art is used, the interior of the biogas digester needs to be cleaned manually, but when workers enter the interior of the biogas digester, small animals need to be placed in the interior of the biogas digester in advance to observe whether the biogas concentration in the interior of the biogas digester accords with the cleaning concentration of the workers entering the interior of the biogas digester, the mode is quite time-consuming, and the animals need to be placed in the biogas digester for judgment, so that the problem is solved.
Disclosure of Invention
The invention aims to provide a concentration detection method of a circulating methane tank, which is used for solving at least one technical problem in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the concentration detection method of the circulating methane tank comprises the following steps of:
s1: preparing a methane tank, arranging a guide wheel in the methane tank, arranging a pull rope on the guide wheel, tying a balloon at one end of the pull rope, and filling safety gas into the balloon, wherein the mass fraction of the safety gas is 18-25;
s2: a vertical cylinder is arranged at the top of the biogas digester, a scroll spring is vertically arranged at the upper part in the vertical cylinder, the scroll spring is sleeved on an installation shaft, the lower end of the scroll spring is fixedly connected with one end of a pull rope, a horizontally arranged indicator needle is fixedly arranged at the lower end of the scroll spring, an observation window is arranged on the vertical cylinder corresponding to the indicator needle, and then the upper part, the middle part and the lower part of the outer wall of the observation window are marked with characters of high concentration, low concentration and safety in sequence;
when the concentration of the methane in the methane tank is large, the indicating needle points to the area with high concentration on the observation window;
when the concentration of the methane in the methane tank is small, the indicating needle points to the area with low concentration on the observation window;
when the methane concentration in the methane tank is 0, the indicating needle points to a 'safe' area on the observation window.
Preferably, a feeding pipe communicated with the biogas digester is arranged on one side of the top of the biogas digester, an air inlet box is arranged on one side of the feeding pipe, an air inlet fan is arranged in the air inlet box, and an air outlet end of the air inlet fan is communicated with the feeding pipe.
Preferably, a tank cover is arranged in the middle of the top of the biogas digester, an air outlet pipe is arranged at the top of the tank cover, and a valve is arranged on the air outlet pipe.
Preferably, a connecting seat is fixed on one side of the methane tank far away from the air inlet fan, a connecting rod is fixed on the side face of the connecting seat, an exhaust box is fixed at one end of the connecting rod, an air exhaust fan is installed in the exhaust box, an exhaust pipe is connected to the top of the exhaust box, and the lower end of the exhaust pipe is communicated with the inside of the methane tank.
Preferably, a guide cylinder is fixed on the inner top wall of the biogas digester, the balloon is arranged in the guide cylinder, two guide wheels are symmetrically arranged on the inner wall and the outer wall of the guide cylinder respectively, and the pull rope penetrates through the guide cylinder after passing through the guide wheels.
Preferably, an air inlet is formed in the middle of one side, close to the exhaust pipe, of the guide cylinder, and an opening is formed in the upper portion of one side, close to the exhaust pipe, of the guide cylinder.
Preferably, the lower extreme of inlet pipe is connected with the bellows, the lower extreme of bellows is connected with the connecting pipe, the connecting pipe is L shape structure, the exhaust tube setting is kept away from to the lower extreme of connecting pipe, the lower extreme of connecting pipe is connected with horizontal pipe, the equal interval of front, back, left and right side of horizontal pipe is provided with the air outlet mouth.
Preferably, a connecting plate is fixed on one side of the connecting pipe, which is close to the exhaust pipe, a threaded hole is formed in the top of the connecting plate, a screw rod is in spiral fit in the threaded hole, a handle is fixed at the upper end of the screw rod after penetrating through the methane tank, a limiting hole is further formed in the connecting plate, a limiting rod is movably arranged in the limiting hole, and the limiting rod and the screw rod are arranged in parallel.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, when the air inlet fan pumps outside air into the methane tank, namely air is mixed in the methane tank, the mass fraction of the air in the methane tank is gradually increased, when the mass fraction of the air in the methane tank is larger than the mass fraction of the safety air in the balloon, the balloon is gradually raised, and the balloon is raised to pull the indicating needle to descend through the pull rope, so that the smart monitoring of the methane concentration in the methane tank is realized, the danger caused by detecting the methane tank by using the power-on equipment is avoided, and the safety of concentration detection is improved.
Drawings
FIG. 1 is a perspective view of a biogas digester in accordance with the present invention;
FIG. 2 is a cross-sectional view of the biogas digester in the present invention;
FIG. 3 is a schematic view of the balloon of FIG. 2 in a "safe" area;
FIG. 4 is a schematic view of the balloon of FIG. 2 at the opening;
FIG. 5 is a top view of a cross tube according to the present invention;
fig. 6 is a partial enlarged view of the portion a in fig. 2.
In the figure: 1. a methane tank; 2. an air inlet box; 3. a connecting seat; 4. a connecting rod; 5. an exhaust box; 6. an exhaust pipe; 7. a pool cover; 8. a feed pipe; 9. an air outlet pipe; 10. a valve; 11. an opening portion; 12. an air intake fan; 13. an air extraction fan; 14. a bellows; 15. a connecting pipe; 16. a transverse tube; 17. a connecting plate; 18. a limit rod; 19. a screw rod; 20. a handle; 21. an air outlet nozzle; 22. a guide cylinder; 23. a balloon; 24. a pull rope; 25. a mounting shaft; 26. a spiral spring; 27. an observation window; 28. an indicator needle; 29. a vertical tube; 30. an air inlet hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, a concentration detection method of a circulating biogas digester includes the following concentration detection methods:
s1: preparing a methane tank 1, arranging a guide wheel in the methane tank 1, arranging a pull rope 24 on the guide wheel, tying a balloon 23 at one end of the pull rope 24, and filling safety gas into the balloon 23, wherein the mass fraction of the safety gas is 18-25;
s2: a vertical cylinder 29 is arranged at the top of the methane tank 1, a scroll spring 26 is vertically arranged at the upper part of the inner part of the vertical cylinder 29, the scroll spring 26 is sleeved on a mounting shaft 25, the lower end of the scroll spring 26 is fixedly connected with one end of a pull rope 24, an indicator needle 28 which is horizontally arranged is fixedly arranged at the lower end of the scroll spring 26, an observation window 27 is arranged on the vertical cylinder 29 corresponding to the indicator needle 28, and then the upper part, the middle part and the lower part of the outer wall of the observation window 27 are marked with 'high concentration', 'low concentration', 'safe' characters in sequence;
when the concentration of the methane in the methane tank 1 is large, the indicator needle 28 points to the area with high concentration on the observation window 27;
when the concentration of the biogas in the biogas digester 1 is small, the indicator needle 28 points to the area with low concentration on the observation window 27;
when the biogas concentration in the biogas digester 1 is 0, the indicator pin 28 points to a "safe" area on the viewing window 27.
Firstly, an air inlet fan 12 and an air exhaust fan 13 are opened, a methane tank 1 is prepared, a guide wheel is arranged in the methane tank 1, a pull rope 24 is arranged on the guide wheel, one end of the pull rope 24 is provided with a balloon 23, safety gas is filled in the balloon 23, the mass fraction of the safety gas is 18-25, the safety gas is mixed inert gas, the safety is high, when the methane concentration in the methane tank 1 is high, the gas in the methane tank 1 is mostly methane, the main component of the methane is methane, the mass fraction of the methane is 16, the mass fraction of the methane is lighter, the mass fraction of the safety gas in the balloon is greater than the mass fraction of the methane, the balloon is at the lowest position, when the air inlet fan 12 pumps external air into the methane tank 1, namely the air is mixed in the methane tank 1, the mass fraction of the gas in the methane tank 1 is gradually increased, when the mass fraction of the safety gas in the methane tank 1 is greater than the mass fraction of the safety gas in the balloon 23, the balloon 23 is gradually increased, when the pointer 28 is pulled down, and the pointer 28 points to a high-concentration observation window 27' is pointed to a high-concentration region; when the concentration of the biogas in the biogas digester 1 is small, the indicator needle 28 points to the area with low concentration on the observation window 27; when the biogas concentration in the biogas digester 1 is 0, the indicator needle 28 points to a safe area on the observation window 27, so that the biogas concentration in the biogas digester 1 is skillfully monitored, the danger caused by detecting the biogas digester 1 by using power-on equipment is avoided, and the safety of concentration detection is improved.
In a specific embodiment of the invention, a feeding pipe 8 communicated with the biogas digester 1 is arranged at one side of the top of the biogas digester 1, an air inlet box 2 is arranged at one side of the feeding pipe 8, an air inlet fan 12 is arranged in the air inlet box 2, the air outlet end of the air inlet fan 12 is communicated with the feeding pipe 8, and a pipe cover is arranged at the top of the feeding pipe 8, so that sealing can be realized.
In a specific embodiment of the invention, a tank cover 7 is arranged in the middle of the top of the biogas digester 1, an air outlet pipe 9 is arranged at the top of the tank cover 7, and a valve 10 is arranged on the air outlet pipe 9.
In a specific embodiment of the invention, a connecting seat 3 is fixed on one side of the biogas digester 1 far away from the air inlet fan 12, a connecting rod 4 is fixed on the side surface of the connecting seat 3, an air extraction tank 5 is fixed at one end of the connecting rod 4, an air extraction fan 13 is installed in the air extraction tank 5, an air extraction pipe 6 is connected to the top of the air extraction tank 5, and the lower end of the air extraction pipe 6 is communicated with the interior of the biogas digester 1.
In a specific embodiment of the present invention, the guiding cylinder 22 is fixed on the inner top wall of the biogas digester 1, the balloon 23 is disposed inside the guiding cylinder 22, two guiding wheels are disposed symmetrically on the inner wall and the outer wall of the guiding cylinder 22, and the pulling rope 24 penetrates through the guiding cylinder 22 after passing through the guiding wheels.
In a specific embodiment of the present invention, an air inlet hole 30 is provided in the middle of the side of the guide cylinder 22 close to the air extraction pipe 6, and an opening 11 is provided in the upper of the side of the guide cylinder 22 close to the air extraction pipe 6.
In a specific embodiment of the present invention, as shown in fig. 5, a bellows 14 is connected to the lower end of the feed pipe 8, a connection pipe 15 is connected to the lower end of the bellows 14, the connection pipe 15 has an L-shaped structure, the lower end of the connection pipe 15 is disposed away from the exhaust pipe 6, a horizontal pipe 16 is connected to the lower end of the connection pipe 15, and air outlet nozzles 21 are disposed on front, rear, left and right sides of the horizontal pipe 16 at intervals.
In a specific embodiment of the invention, a connecting plate 17 is fixed on one side of the connecting pipe 15 near the exhaust pipe 6, a threaded hole is formed in the top of the connecting plate 17, a screw rod 19 is screwed in the threaded hole, a handle 20 is fixed at the upper end of the screw rod 19 after penetrating through the methane tank 1, a limiting hole is further formed in the connecting plate 17, a limiting rod 18 is movably arranged in the limiting hole, and the limiting rod 18 and the screw rod 19 are mutually parallel. The invention is also provided with the transverse pipe 16, when the air inlet fan 12 runs, external air can be input into the methane tank 1, and because the transverse pipe 16 is provided with the plurality of air outlet nozzles 21, the air can quickly fill the interior of the methane tank 1, further, the methane in the methane tank 1 can be quickly diluted and taken away, further, staff can conveniently clean the interior of the methane tank, the methane dissipation efficiency is improved, the invention is also provided with the screw rod 19, the height of the connecting pipe 15 can be adjusted by rotating the screw rod 19, and then, the position of the air outlet nozzles 21 can be adjusted, and further, the methane tank 1 can be quickly cleaned.
In summary, when the invention is used, firstly, the air inlet fan 12 and the air exhaust fan 13 are opened, a methane tank 1 is prepared, a guide wheel is arranged in the methane tank 1, a pull rope 24 is arranged on the guide wheel, one end of the pull rope 24 is provided with a balloon 23, safety gas is filled into the balloon 23, the mass fraction of the safety gas is 18-25, the safety gas is mixed inert gas, the safety is higher, when the methane concentration in the methane tank 1 is high, the gas in the methane tank 1 is mostly methane, the main component of the methane is methane, the mass fraction of the methane is 16, the mass fraction of the methane is lighter, the mass fraction of the safety gas in the balloon is greater than the mass fraction of the methane, at the moment, the balloon is at the position of the lowest, when the air inlet fan 12 pumps outside air into the methane tank 1, namely, the air is mixed into the methane tank 1, the mass fraction of the gas in the methane tank 1 is gradually increased, when the mass fraction of the safety gas in the balloon 1 is greater than the mass fraction of the safety gas in the balloon 23, the safety gas is gradually increased, the safety gas in the balloon 23 is at the moment, the safety gas is mainly indicated by the methane tank 23 is gradually increased, the methane is indicated by pulling the descending needle 28, and the oxygen needle 28 is indicated to be directed to the high concentration region 27; when the concentration of the biogas in the biogas digester 1 is small, the indicator needle 28 points to the area with low concentration on the observation window 27; when the methane concentration in the methane tank 1 is 0, the indicator needle 28 points to a safe area on the observation window 27, so that the smart monitoring of the methane concentration in the methane tank 1 is realized, the danger caused by detecting the methane tank 1 by using power-on equipment is avoided, and the safety of concentration detection is improved;
the invention is also provided with the transverse pipe 16, when the air inlet fan 12 runs, external air can be input into the methane tank 1, and because the transverse pipe 16 is provided with the plurality of air outlet nozzles 21, the air can quickly fill the interior of the methane tank 1, further, the methane in the methane tank 1 can be quickly diluted and taken away, further, staff can conveniently clean the interior of the methane tank, the methane dissipation efficiency is improved, the invention is also provided with the screw rod 19, the height of the connecting pipe 15 can be adjusted by rotating the screw rod 19, and then, the position of the air outlet nozzles 21 can be adjusted, and further, the methane tank 1 can be quickly cleaned.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The concentration detection method of the circulating methane tank is characterized by comprising the following steps of:
s1: preparing a methane tank (1), arranging a guide wheel in the methane tank (1), arranging a pull rope (24) on the guide wheel, tying a balloon (23) at one end of the pull rope (24), and filling safety gas into the balloon (23), wherein the mass fraction of the safety gas is 18-25;
s2: a vertical cylinder (29) is arranged at the top of the methane tank (1), a scroll spring (26) is vertically arranged at the upper inner part of the vertical cylinder (29), the scroll spring (26) is sleeved on a mounting shaft (25), the lower end of the scroll spring (26) is fixedly connected with one end of a pull rope (24), an indicator needle (28) which is horizontally arranged is fixedly arranged at the lower end of the scroll spring (26), an observation window (27) is arranged on the vertical cylinder (29) corresponding to the indicator needle (28), and then the upper part, the middle part and the lower part of the outer wall of the observation window (27) are marked with characters of high concentration, low concentration and safety in sequence;
when the concentration of the biogas in the biogas digester (1) is large, the indicator needle (28) points to a high-concentration area on the observation window (27);
when the concentration of the biogas in the biogas digester (1) is small, the indicator needle (28) points to a low-concentration area on the observation window (27);
when the methane concentration in the methane tank (1) is 0, the indicator needle (28) points to a 'safe' area on the observation window (27);
a feed pipe (8) communicated with the biogas digester (1) is arranged on one side of the top of the biogas digester (1), an air inlet box (2) is arranged on one side of the feed pipe (8), an air inlet fan (12) is arranged in the air inlet box (2), and the air outlet end of the air inlet fan (12) is communicated with the feed pipe (8);
a tank cover (7) is arranged in the middle of the top of the biogas digester (1), an air outlet pipe (9) is arranged at the top of the tank cover (7), and a valve (10) is arranged on the air outlet pipe (9);
one side that methane-generating pit (1) kept away from air inlet fan (12) is fixed with connecting seat (3), the side of connecting seat (3) is fixed with connecting rod (4), the one end of connecting rod (4) is fixed with extraction box (5), internally mounted of extraction box (5) has extraction fan (13), the top of extraction box (5) is connected with exhaust tube (6), the lower extreme of exhaust tube (6) is linked together with the inside of methane-generating pit (1).
2. The concentration detection method of the circulating methane tank according to claim 1, wherein a guide cylinder (22) is fixed on the inner top wall of the methane tank (1), the balloon (23) is arranged inside the guide cylinder (22), two guide wheels are respectively and symmetrically arranged on the inner wall and the outer wall of the guide cylinder (22), and the pull rope (24) penetrates through the guide cylinder (22) after passing through the guide wheels.
3. The concentration detection method of the circulating methane tank according to claim 2, wherein an air inlet hole (30) is formed in the middle of one side of the guide cylinder (22) close to the exhaust pipe (6), and an opening (11) is formed in the upper of one side of the guide cylinder (22) close to the exhaust pipe (6).
4. The concentration detection method of the circulating methane tank according to claim 2, wherein the lower end of the feeding pipe (8) is connected with a corrugated pipe (14), the lower end of the corrugated pipe (14) is connected with a connecting pipe (15), the connecting pipe (15) is of an L-shaped structure, the lower end of the connecting pipe (15) is far away from the exhaust pipe (6), the lower end of the connecting pipe (15) is connected with a transverse pipe (16), and air outlet nozzles (21) are arranged on the front side, the rear side, the left side and the right side of the transverse pipe (16) at intervals.
5. The concentration detection method of the circulating methane tank according to claim 4, wherein a connecting plate (17) is fixed on one side, close to the exhaust pipe (6), of the connecting pipe (15), a threaded hole is formed in the top of the connecting plate (17), a screw rod (19) is in spiral fit in the threaded hole, a handle (20) is fixed after the upper end of the screw rod (19) penetrates through the methane tank (1), a limiting hole is further formed in the connecting plate (17), a limiting rod (18) is movably arranged in the limiting hole, and the limiting rod (18) and the screw rod (19) are arranged in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110236325.XA CN113109208B (en) | 2021-03-03 | 2021-03-03 | Concentration detection method for circulating methane tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110236325.XA CN113109208B (en) | 2021-03-03 | 2021-03-03 | Concentration detection method for circulating methane tank |
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| CN113109208B true CN113109208B (en) | 2023-09-22 |
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