CN113109208A - Concentration detection method for circulating methane tank - Google Patents
Concentration detection method for circulating methane tank Download PDFInfo
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- CN113109208A CN113109208A CN202110236325.XA CN202110236325A CN113109208A CN 113109208 A CN113109208 A CN 113109208A CN 202110236325 A CN202110236325 A CN 202110236325A CN 113109208 A CN113109208 A CN 113109208A
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- 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 a methane tank, in particular to a concentration detection method of a circulating methane 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 one end of the pull rope to a balloon, 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 volute spiral spring is vertically arranged at the inner upper part of the vertical cylinder, the volute spiral spring is sleeved on a mounting shaft, an observation window is arranged on the vertical cylinder corresponding to the indicator, and characters of high concentration, low concentration and safety are marked on the upper part, the middle part and the lower part of the outer wall of the observation window in sequence; the invention realizes the smart monitoring of the methane concentration in the methane tank, avoids the danger caused by the detection of the methane tank by utilizing the electrifying equipment and improves the safety of the concentration detection.
Description
Technical Field
The invention relates to the technical field of concentration detection of a methane tank, in particular to a concentration detection method of a circulating methane tank.
Background
The methane tank is a facility for producing methane, and the methane is combustible gas produced by the fermentation of organic substances in an anaerobic environment under the conditions of certain temperature, humidity and pH value through microorganisms, and is called methane because the gas is originally found in swamps, lakes and ponds.
After the methane tank in the prior art is used, the methane tank needs to be manually cleaned in the methane tank, but when workers enter the methane tank, small animals need to be placed in the methane tank in advance to observe whether the methane concentration in the methane tank meets the concentration of the workers in the methane tank for cleaning, the method is very time-consuming, and the animals need to be placed in the methane tank to be judged.
Disclosure of Invention
The present invention is directed to a method for detecting the concentration of a circulating methane tank, which is used to solve at least one of the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a concentration detection method of a circulating methane tank 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 one end of the pull rope to a balloon, and filling safety gas into the balloon, wherein the mass fraction of the safety gas is 18-25;
s2: the top of the methane tank is provided with a vertical cylinder, the inner upper part of the vertical cylinder is vertically provided with a volute spiral spring, the volute spiral spring is sleeved on an installation shaft, the lower end of the volute spiral spring is fixedly connected with one end of a pull rope, the lower end of the volute spiral spring is fixedly provided with a horizontally arranged indicating needle, the vertical cylinder corresponding to the indicating needle is provided with an observation window, and then the upper part, the middle part and the lower part of the outer wall of the observation window are sequentially marked with characters of high concentration, low concentration and safe;
when the concentration of the biogas in the biogas tank is high, the indicating needle points to a region with high concentration on the observation window;
when the concentration of the biogas in the biogas tank is small, the indicating needle points to a region with low concentration on the observation window;
when the concentration of the biogas in the biogas tank is 0, the indicator needle points to a 'safe' area on the observation window.
Preferably, a feeding pipe communicated with the methane tank is arranged on one side of the top of the methane tank, an air inlet box is arranged on one side of the feeding pipe, an air inlet fan is installed 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 methane tank, an air outlet pipe is arranged on the top of the tank cover, and a valve is mounted on the air outlet pipe.
Preferably, a connecting seat is fixed on one side of the methane tank far away from the air intake fan, a connecting rod is fixed on the side face of the connecting seat, an air exhaust box is fixed at one end of the connecting rod, the air exhaust fan is installed inside the air exhaust box, an air exhaust pipe is connected to the top of the air exhaust box, and the lower end of the air exhaust pipe is communicated with the inside of the methane tank.
Preferably, the guiding cylinder is fixed on the inner top wall of the methane tank, the balloon is arranged inside the guiding cylinder, the two guiding wheels are symmetrically arranged on the inner wall and the outer wall of the guiding cylinder respectively, and the pull rope penetrates through the guiding cylinder after passing through the guiding wheel.
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 violently the pipe, the equal interval of preceding, back, left and right side of violently managing is provided with the air outlet nozzle.
Preferably, a connecting plate is fixed on one side of the connecting pipe close to the exhaust pipe, a threaded hole is formed in the top of the connecting plate, a screw rod is spirally matched in the threaded hole, a handle is fixed after the upper end of the screw rod penetrates 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 into the methane tank, the mass fraction of the gas in the methane tank is gradually increased, when the mass fraction in the methane tank is greater than the mass fraction of the safety gas in the balloon, the balloon gradually rises, the balloon rises and pulls the indicator needle to descend through the pull rope, so that the methane concentration in the methane tank is skillfully monitored, the danger caused by the detection of the methane tank by utilizing a power-on device is avoided, and the safety of concentration detection is improved.
Drawings
FIG. 1 is a perspective view of a methane tank according to the present invention;
FIG. 2 is a sectional view of the biogas digester of the present invention;
FIG. 3 is a schematic view of the structure of the balloon of FIG. 2 in the "safe" area;
FIG. 4 is a schematic view of the structure of the balloon in FIG. 2 at the opening;
FIG. 5 is a top view of a cross tube according to the present invention;
fig. 6 is a partially enlarged view of a portion a in fig. 2.
In the figure: 1. a biogas generating pit; 2. an air intake box; 3. a connecting seat; 4. a connecting rod; 5. an air extraction box; 6. an air exhaust pipe; 7. a pool cover; 8. a feed pipe; 9. an air outlet pipe; 10. a valve; 11. an opening part; 12. an air intake fan; 13. an air exhaust fan; 14. a bellows; 15. a connecting pipe; 16. a transverse tube; 17. a connecting plate; 18. a limiting rod; 19. a screw rod; 20. a handle; 21. an air outlet nozzle; 22. a guide cylinder; 23. a balloon; 24. pulling a rope; 25. installing a shaft; 26. a volute spiral spring; 27. an observation window; 28. an indicator needle; 29. a vertical cylinder; 30. and (4) air inlet holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-6, a method for detecting the concentration of a circulating methane tank comprises the following steps:
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 one end of the pull rope 24 with a balloon 23, 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 volute spiral spring 26 is vertically arranged at the inner upper part of the vertical cylinder 29, the volute spiral spring 26 is sleeved on a mounting shaft 25, the lower end of the volute spiral spring 26 is fixedly connected with one end of a pull rope 24, a horizontally arranged indicating needle 28 is fixed at the lower end of the volute spiral spring 26, an observation window 27 is arranged on the vertical cylinder 29 corresponding to the indicating needle 28, and then characters of 'high concentration', 'low concentration', 'safe' are marked on the upper part, the middle part and the lower part of the outer wall of the observation window 27 in sequence;
when the methane concentration in the methane tank 1 is high, the indicating needle 28 points to the high-concentration area on the observation window 27;
when the methane concentration in the methane tank 1 is small, the indicating needle 28 points to the area of low concentration on the observation window 27;
when the methane concentration in the methane tank 1 is 0, the indicator pin 28 points to the "safe" area on the observation window 27.
Firstly, opening an air inlet fan 12 and an air exhaust fan 13, preparing a methane tank 1, arranging a guide wheel in the methane tank 1, arranging a pull rope 24 on the guide wheel, tying one end of the pull rope 24 with a balloon 23, filling safety gas in the balloon 23, wherein 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, most of the gas in the methane tank 1 is methane, the main component of the methane is methane, the mass fraction of the methane is 16, the mass of the methane is light, the mass fraction of the safety gas in the balloon is larger than that of the methane, the balloon is at the lowest position, 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 in the methane tank 1 is larger than the mass fraction of the safety gas in the balloon 23, the balloon 23 gradually rises, the balloon 23 rises, the pull rope pulls the indicator needle 28 to descend, and the indicator needle 28 points to a region with high concentration on the observation window 27; when the methane concentration in the methane tank 1 is small, the indicating needle 28 points to the area of 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 methane concentration in the methane tank 1 can be skillfully monitored, danger caused by detection of the methane tank 1 by using a power-on device is avoided, and the safety of concentration detection is improved.
In a specific embodiment of the invention, a feeding pipe 8 communicated with the methane tank 1 is arranged on one side of the top of the methane tank 1, an air inlet box 2 is arranged on 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 on 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 methane tank 1, an air outlet pipe 9 is arranged on 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 methane tank 1 far away from an air inlet fan 12, a connecting rod 4 is fixed on the side surface of the connecting seat 3, an air extraction box 5 is fixed at one end of the connecting rod 4, an air extraction fan 13 is installed inside the air extraction box 5, an air extraction pipe 6 is connected to the top of the air extraction box 5, and the lower end of the air extraction pipe 6 is communicated with the inside of the methane tank 1.
In a specific embodiment of the present invention, 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 arranged and symmetrically arranged on the inner wall and the outer wall of the guide cylinder 22, respectively, and the pull rope 24 passes through the guide wheels and then penetrates through the guide cylinder 22.
In an embodiment of the present invention, an air inlet 30 is provided in the middle of one side of the guide cylinder 22 close to the exhaust pipe 6, and an opening 11 is provided in the upper part of one side of the guide cylinder 22 close to the exhaust pipe 6.
In an embodiment of the present invention, as shown in fig. 5, a corrugated pipe 14 is connected to a lower end of the feeding pipe 8, a connecting pipe 15 is connected to a lower end of the corrugated pipe 14, the connecting pipe 15 is in an L-shaped structure, the lower end of the connecting pipe 15 is disposed away from the air exhaust pipe 6, a horizontal pipe 16 is connected to a lower end of the connecting pipe 15, and air outlets 21 are disposed on front, rear, left, and right side surfaces 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 close to the exhaust pipe 6, a threaded hole is formed in the top of the connecting plate 17, a screw rod 19 is spirally matched in the threaded hole, a handle 20 is fixed on 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 arranged in parallel. The methane tank is also provided with the transverse pipe 16, when the air inlet fan 12 operates, external gas can be input into the methane tank 1, and the transverse pipe 16 is provided with the plurality of air outlet nozzles 21, so that the gas can be quickly filled in the methane tank 1, methane in the methane tank 1 can be quickly diluted and taken away, workers can conveniently clean the interior of the methane tank, and the methane dissipation efficiency is improved.
In summary, when the invention is used, firstly, the air intake 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 tied with a balloon 23, the balloon 23 is filled with safety gas, 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, most of the gas in the methane tank 1 is methane, the main component of the methane is methane, the mass fraction of the methane is 16, the mass fraction of the methane is light, the mass fraction of the safety gas in the balloon is larger than the mass fraction of the methane, the balloon is at the lowest position, when the air intake fan 12 pumps outside air into the methane tank 1, namely, the air is mixed in the methane tank 1, at the moment, the mass fraction of the gas in the methane tank 1 is gradually increased, when the mass fraction in the methane tank 1 is greater than the mass fraction of the safety gas in the balloon 23, the balloon 23 gradually rises, the balloon 23 rises and pulls the indicator needle 28 to descend through the pull rope, and the indicator needle 28 points to a high-concentration area on the observation window 27; when the methane concentration in the methane tank 1 is small, the indicating needle 28 points to the area of low concentration on the observation window 27; when the methane concentration in the methane tank 1 is 0, the indicating needle 28 points to a safe area on the observation window 27, so that the methane concentration in the methane tank 1 is skillfully monitored, danger caused by detection of the methane tank 1 by utilizing a power-on device is avoided, and the safety of concentration detection is improved;
the methane tank is also provided with the transverse pipe 16, when the air inlet fan 12 operates, external gas can be input into the methane tank 1, and the transverse pipe 16 is provided with the plurality of air outlet nozzles 21, so that the gas can be quickly filled in the methane tank 1, methane in the methane tank 1 can be quickly diluted and taken away, workers can conveniently clean the interior of the methane tank, and the methane dissipation efficiency is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A concentration detection method of a circulating methane tank is characterized by comprising 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 one end of the pull rope (24) with a balloon (23), and filling safety gas into the balloon (23), wherein the mass fraction of the safety gas is 18-25;
s2: the biogas digester comprises a biogas digester (1), wherein a vertical cylinder (29) is arranged at the top of the biogas digester (1), a volute spiral spring (26) is vertically arranged at the inner upper part of the vertical cylinder (29), the volute spiral spring (26) is sleeved on a mounting shaft (25), the lower end of the volute spiral spring (26) is fixedly connected with one end of a pull rope (24), a horizontally arranged indicating needle (28) is fixed at the lower end of the volute spiral spring (26), an observation window (27) is arranged on the vertical cylinder (29) corresponding to the indicating needle (28), and then characters of 'high concentration', 'low concentration', 'safe' are marked on the upper part, the middle part and the lower part of the outer wall of the observation window (27);
when the methane concentration in the methane tank (1) is high, the indicating needle (28) points to a region with high concentration on the observation window (27);
when the methane concentration in the methane tank (1) is small, the indicating 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 indicating needle (28) points to a safe area on the observation window (27).
2. The concentration detection method of the circulating methane tank according to claim 1, wherein a feed pipe (8) communicated with the methane tank (1) is arranged on one side of the top of the methane tank (1), an air intake box (2) is arranged on one side of the feed pipe (8), an air intake fan (12) is installed in the air intake box (2), and an air outlet end of the air intake fan (12) is communicated with the feed pipe (8).
3. The concentration detection method of the circulating methane tank according to claim 1, wherein a tank cover (7) is arranged in the middle of the top of the methane tank (1), an air outlet pipe (9) is arranged on the top of the tank cover (7), and a valve (10) is arranged on the air outlet pipe (9).
4. The concentration detection method of the circulating methane tank according to claim 2, wherein a connecting seat (3) is fixed on one side of the methane tank (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 box (5) is fixed at one end of the connecting rod (4), an air extraction fan (13) is installed inside the air extraction box (5), the top of the air extraction box (5) is connected with an air extraction pipe (6), and the lower end of the air extraction pipe (6) is communicated with the inside of the methane tank (1).
5. The concentration detection method of the circulating methane tank according to claim 4, 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 arranged and symmetrically arranged on the inner wall and the outer wall of the guide cylinder (22), respectively, and the pull rope (24) passes through the guide wheel and then penetrates through the guide cylinder (22).
6. The concentration detection method of the circulating methane tank according to claim 5, wherein the middle part of one side of the guide cylinder (22) close to the exhaust pipe (6) is provided with an air inlet hole (30), and the upper part of one side of the guide cylinder (22) close to the exhaust pipe (6) is provided with an opening part (11).
7. The concentration detection method of the circulating methane tank according to claim 5, 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 in an L-shaped structure, the lower end of the connecting pipe (15) is far away from the pumping pipe (6), the lower end of the connecting pipe (15) is connected with a horizontal pipe (16), and the front side, the rear side, the left side and the right side of the horizontal pipe (16) are respectively provided with a gas outlet nozzle (21) at intervals.
8. The concentration detection method of the circulating methane tank according to claim 7, wherein a connecting plate (17) is fixed on one side of the connecting pipe (15) close to 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 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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| CN202110236325.XA CN113109208B (en) | 2021-03-03 | 2021-03-03 | Concentration detection method for circulating methane tank |
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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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