CN117267627A - Explosive gas detection device - Google Patents
Explosive gas detection device Download PDFInfo
- Publication number
- CN117267627A CN117267627A CN202311173796.6A CN202311173796A CN117267627A CN 117267627 A CN117267627 A CN 117267627A CN 202311173796 A CN202311173796 A CN 202311173796A CN 117267627 A CN117267627 A CN 117267627A
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- Prior art keywords
- semi
- air
- pipe
- annular
- hydrogen
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- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 239000002360 explosive Substances 0.000 title claims abstract description 25
- 239000001257 hydrogen Substances 0.000 claims abstract description 66
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 66
- 239000007789 gas Substances 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims description 48
- 238000003860 storage Methods 0.000 claims description 26
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 20
- 229910001887 tin oxide Inorganic materials 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 14
- -1 polytetrafluoroethylene Polymers 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 9
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 55
- 150000002431 hydrogen Chemical class 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of gas detection, and particularly relates to an explosive gas detection device which comprises four semi-annular plates and a pipeline for conveying hydrogen, wherein the two semi-annular plates on the same side are mutually hinged, the two semi-annular plates on the same side are respectively sleeved on the outer side of the pipeline, an upper mounting plate and a lower mounting plate are respectively arranged on the upper side and the lower side of the pipeline, one end of the outer side wall of each semi-annular plate is fixedly provided with a T-shaped sliding block, and the end surfaces of the upper mounting plate and the lower mounting plate are respectively provided with a T-shaped sliding groove matched with the T-shaped sliding blocks. According to the hydrogen leakage detection method, the detection range of hydrogen leakage can be increased, the hydrogen leakage point can be automatically positioned, the accuracy of detecting the leaked hydrogen can be improved, meanwhile, the leaked hydrogen can be temporarily plugged and stored, the time for timely processing the leaked hydrogen is given to personnel, and the production safety of the hydrogen is improved.
Description
Technical Field
The invention belongs to the technical field of gas detection, and particularly relates to an explosive gas detection device.
Background
Hydrogen is a gas which is extremely easy to burn, colorless, odorless and indissolvable in water, and because the hydrogen is inflammable and explosive, the hydrogen is required to be detected in the production and transportation process of the hydrogen, so that the hydrogen leakage is ensured to occur in time, and the possibility of safety accidents is reduced.
At present, instruments such as a hydrogen detection sensor are the most common hydrogen detection devices, and are generally arranged at each opposite joint of a water pipeline and at positions such as vent holes in a workshop, and hydrogen leakage is easy to occur at the opposite joint, so that the hydrogen leakage can be timely found when the opposite joint detects the hydrogen leakage, and the vent holes are used as air circulation positions of the whole space, so that the hydrogen leakage can be timely found when the pipeline leaks at a certain position of the pipeline (the opposite joint of the pipeline is not in the same position);
however, the detection mode of fixed position, its detection coverage is comparatively limited, and hydrogen often still accompanies vapor etc. when producing, and the pipeline is in long-term use, easily produces the corrosion site, under high pressure delivery state, cooperate hydrogen self high penetrability, lead to hydrogen delivery pipeline to remove the interface department, its pipe shaft also has the possibility that micropore leaked, because the molecular size of hydrogen is little, possess higher diffusion rate, lead to the detecting instrument to interface department be difficult to detect the hydrogen leakage of pipe shaft department, and the hydrogen escape volume when micropore leaks is less, under the high velocity of flow effect of air in ventilation hole department, detecting instrument is difficult to detect hydrogen leakage yet, and be unfavorable for the position to leak location, bring certain difficulty for timely renovation.
Disclosure of Invention
The present invention aims to solve the above problems and provide an explosive gas detection device.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an explosive gas detection device, includes four semi-annular plates and is used for carrying the pipeline of hydrogen, and homonymy two the semi-annular plate articulates each other sets up, homonymy two the semi-annular plate all cuts the sleeve in the outside setting of pipeline, the upper and lower both sides of pipeline are provided with mounting panel and lower mounting panel respectively, and each the equal fixed mounting of lateral wall one end of semi-annular plate has T shape slider, and the terminal surface of mounting panel and lower mounting panel all has seted up the T shape spout with T shape slider assorted, the air feed mechanism is installed to the terminal surface of mounting panel, separation detection mechanism is installed to the inlet end of air feed mechanism, homonymy two the equal fixedly connected with annular gasbag cover in inner wall both ends of semi-annular plate, air feed mechanism installs the reposition of redundant personnel subassembly that is linked together with each annular gasbag cover jointly with each semi-annular plate, four the semi-annular plate installs the travelling mechanism jointly, and wherein the inner wall of two semi-annular plates that set up side by side all installs atmospheric pressure detection mechanism, the terminal surface both sides of mounting panel all install with air feed mechanism matched with gas storage warning mechanism, lower extreme controller and mounting panel are installed to the lower extreme.
Preferably, the air supply mechanism comprises a bump integrally formed on the end face of the upper mounting plate, an air pump is fixedly arranged on the end face of the bump, an air pipe is fixedly arranged at the output end of the air pump, an air suction pipe is fixedly communicated with the air suction end of the air pump, and the air pump is electrically connected with the controller.
Preferably, the separation detection mechanism comprises a ball arranged above the air pump, the ball is hollow, a supporting rod is fixedly installed between the ball and the bump, a spherical insulating framework is installed inside the ball, a polytetrafluoroethylene selective permeable membrane is fixedly wrapped on the outer side wall of the spherical insulating framework, columnar tin oxide is fixedly installed inside the spherical insulating framework, a first electromagnetic switch and a buzzer prompter are fixedly installed on the lower mounting plate, the first electromagnetic switch is electrically connected with the columnar tin oxide through a controller, the buzzer prompter is electrically connected with the first electromagnetic switch through the controller, the upper end of the ball is provided with an opening, and an inner convex blocking ring is integrally formed on the upper side of the inner wall of the ball.
Preferably, the shunt assembly comprises a shunt cavity which is arranged inside the bump and fixedly communicated with the gas pipe, the shunt pipes are fixedly inserted into two cavity walls of the shunt cavity, the first normally-closed electromagnetic valve is fixedly inserted into the two cavity walls of the shunt pipes, annular grooves which are communicated with the annular air bag sleeve are commonly arranged at two ends of the inner wall of the semi-annular plate at the same side, communicating pipes are fixedly inserted into the two annular grooves at the same side, hoses are fixedly connected with the pipe ends of the shunt pipes and the corresponding annular grooves at the same time, the second normally-closed electromagnetic valve is arranged in the gas pipe, the first normally-closed electromagnetic valve and the second normally-closed electromagnetic valve are electrically connected with the controller, circular pipes are fixedly inserted into the side walls of the annular grooves, and the third normally-closed electromagnetic valve is arranged in the two circular pipes.
Preferably, the alternating travelling mechanism comprises two travelling wheels fixedly arranged on the inner wall of each semi-ring plate, the two travelling wheels on the same side are symmetrically arranged, the wheel walls of the travelling wheels are all in offset arrangement with the outer pipe wall of the pipeline, the side walls of the semi-ring plates are fixedly connected with electric push rods in an inserted mode, the output ends of the two electric push rods are fixedly connected with the corresponding side walls of the semi-ring plates, the two electric push rods are electrically connected with the controller, side jacking columns are fixedly connected with the side walls of two parallel semi-ring plates on the opposite sides, and travel switches electrically connected with the controller are installed at the ends of the two side jacking columns.
Preferably, the two air pressure detection mechanisms comprise mounting grooves formed in the inner wall of the semi-annular plate, the mounting grooves are arranged between annular air bag sleeves on the same side, an air pressure automatic switch is fixedly mounted at the bottom of each mounting groove, an elastic membrane is fixedly packaged at the notch of each mounting groove, and the two air pressure automatic switches are electrically connected with the buzzer prompt through the controller.
Preferably, the two gas storage prompt mechanisms all include fixed mounting in the storage bucket of last mounting panel terminal surface, the interior bottom fixed mounting of storage bucket has air bag, the lateral wall of storage bucket has the blast pipe with the pipe wall of gas-supply pipe is fixed grafting jointly, the blast pipe is located the top setting of second normally closed solenoid valve, and the internally mounted of blast pipe has first normally open solenoid valve, the blast pipe is linked together with air bag and is set up, the lateral wall of air bag has the tail gas pipe with the lateral wall of storage bucket is fixed grafting jointly, and the internally mounted of tail gas pipe has second normally open solenoid valve, the terminal surface of mounting panel install with column tin oxide electric connection's second electromagnetic switch down, and second electromagnetic switch passes through controller and first normally open solenoid valve and second normally open solenoid valve electric connection.
Preferably, the opening of the ball is fixedly inserted with an air inlet pipe, the pipe end of the air inlet pipe is fixedly communicated with a hollow circular plate, and the side wall of the hollow circular plate is provided with a plurality of air suction holes.
Preferably, the lower ends of the side walls of the two safety airbags are fixedly inserted with air pressure pipes, and air pressure valves are arranged in the two air pressure pipes.
Compared with the prior art, the explosive gas detection device has the advantages that:
1. through the mutual cooperation of four semi-annular plates that set up, go up mounting panel, mounting panel down, T shape slider, T shape spout, air feed mechanism, annular gasbag cover, reposition of redundant personnel subassembly, controller, battery pack and running gear, can make whole detection device walk on the pipeline of carrying hydrogen, reach the purpose of patrolling and examining, improve the scope of detecting the coverage, and the atmospheric pressure detection mechanism that the cooperation set up, can detect the leakage point position of hydrogen in the process of patrolling and examining, not only can detect the location to the hydrogen leakage point, can temporarily shutoff hydrogen leakage point moreover, improve the production safety of hydrogen.
2. Through the separation detection mechanism that sets up, can detect the hydrogen that has escaped at air feed mechanism's inlet end, utilize to admit air, and can be based on the small characteristic of molecule of hydrogen, reduce the influence of air to hydrogen detection, do benefit to the hydrogen concentration that improves detecting element department, increase the hydrogen detection's precision, reduce the hydrogen and lead to leaking the possibility of not in time finding because of self high diffusivity.
3. Through the gas storage prompt facility that sets up, can be based on separation detection mechanism's testing result, when detecting hydrogen leakage, carry out temporary storage to hydrogen automatically, give the staff in time handle the time of potential safety hazard to can be through air bag's inflation state, the leakage state of suggestion staff hydrogen, cooperation buzzer prompt, improvement warning effect.
Drawings
FIG. 1 is a schematic diagram of an explosive gas detection device according to the present invention;
FIG. 2 is a schematic side view of an explosive gas detecting device according to the present invention;
FIG. 3 is a schematic diagram of the connection structure between the air pump and the upper mounting plate of the explosive gas detecting device provided by the invention;
FIG. 4 is a schematic view of the internal structure of a sphere of an explosive gas detection device according to the present invention;
FIG. 5 is a schematic view of a semi-ring plate of an explosive gas detection device according to the present invention;
FIG. 6 is a schematic view of the internal structure of a storage barrel of an explosive gas detection device provided by the invention;
fig. 7 is a schematic diagram of a connection structure between a lower mounting plate and a semi-annular plate of an explosive gas detection device provided by the invention.
In the figure: the device comprises a 1 semi-annular plate, a 2 pipeline, a 3 upper mounting plate, a 4 lower mounting plate, a 5T-shaped sliding block, a 6T-shaped sliding groove, a 7 air supply mechanism, a 71 lug, a 72 air pump, a 73 air pipe, a 74 air suction pipe, an 8 separation detection mechanism, a 81 round ball, a 82 support rod, a 83 spherical insulation framework, a 84 polytetrafluoroethylene selective permeable membrane, a 85 column-shaped tin oxide, a 86 first electromagnetic switch, a 87 buzzer prompter, an 88 inward convex blocking ring, a 9 annular air bag sleeve, a 10 split component, a 101 split cavity, a 102 split pipe, a 103 first electromagnetic valve, a 104 annular groove, a 105 communicating pipe, a 106 hose, a 107 second electromagnetic valve, a 108 round pipe, a 109 third electromagnetic valve, a 11 alternate walking mechanism, a 111 walking wheel, a 112 electric push rod, a 113 side ejection column, a 114 travel switch, a 12 air pressure detection mechanism, a 121 mounting groove, a 122 air pressure automatic switch, a 123 elastic membrane, a 13 air storage prompting mechanism, a 131 storage barrel, a 132 safety air bag, a 133 exhaust pipe, a 134 first electromagnetic valve, a 135 tail air pipe, a 136 second electromagnetic switch, a 14 controller, a 15 component, 16 air suction pipe, a 17 hollow circular plate, a 18 air suction pipe, a 19 air pressure valve and a 20 air pressure valve.
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.
As shown in fig. 1-7, an explosive gas detection device comprises four semi-ring plates 1 and a pipeline 2 for conveying hydrogen, wherein the two semi-ring plates 1 on the same side are hinged to each other, the two semi-ring plates 1 on the same side are sleeved on the outer side of the pipeline 2, movable ends of the two semi-ring plates 1 on the same side are locked and fixed through bolts, an upper mounting plate 3 and a lower mounting plate 4 are respectively arranged on the upper side and the lower side of the pipeline 2, a T-shaped sliding block 5 is fixedly arranged at one end of the outer side wall of each semi-ring plate 1, T-shaped sliding grooves 6 matched with the T-shaped sliding blocks 5 are respectively arranged on the end faces of the upper mounting plate 3 and the lower mounting plate 4, a controller 14 and a storage battery assembly 15 are respectively arranged at the lower ends of the lower mounting plate 4, a gas supply mechanism 7 is arranged at the end face of the upper mounting plate 3, the gas supply mechanism 7 comprises a bump 71 integrally formed on the end face of the upper mounting plate 3, an air pump 72 is fixedly arranged at the end face of the bump 71, an output end of the air pump 72 is fixedly provided with a gas suction pipe 73, the gas suction end of the air pump 72 is fixedly communicated with the air suction pipe 74, and the air pump 72 is electrically connected with the controller 14, and the air pump 72 can be sucked in air through the 74 and output through the gas supply pipe 73.
The separation detection mechanism 8 is installed to the air inlet end of air feed mechanism 7, separation detection mechanism 8 is including setting up in the ball 81 of air pump 72 top, and ball 81 is the cavity setting, common fixed mounting has bracing piece 82 between ball 81 and the lug 71, the internally mounted of ball 81 has spherical insulating skeleton 83, and the fixed parcel of the lateral wall of spherical insulating skeleton 83 has polytetrafluoroethylene selectively to permeate membrane 84, the internally mounted of spherical insulating skeleton 83 has columnar tin oxide 85, lower mounting panel 4 fixed mounting has first electromagnetic switch 86 and buzzer prompt 87, first electromagnetic switch 86 passes through controller 14 and columnar tin oxide 85 electric connection, buzzer prompt 87 passes through controller 14 and first electromagnetic switch 86 electric connection, the upper end of ball 81 is the opening setting, the inner wall upside integrated into one piece of ball 81 is provided with interior flange gas ring 88, the polytetrafluoroethylene selectively on the spherical insulating skeleton 83 permeates membrane 84 easily, and because the molecule of each component of air is great, and particle diameter such as dust in the air, it is difficult to permeate polytetrafluoroethylene selectively membrane 84, so flange gas ring 84 is permeated easily when the flange gas ring 88 is permeated through the interior flange gas ring 84, if the hydrogen gas is leaked easily, the inside can be leaked out because of selectivity flange gas ring 84 is permeated into with polytetrafluoroethylene selectively in the interior flange gas ring 84.
The opening of the ball 81 is fixedly inserted with the air inlet pipe 16, the pipe end of the air inlet pipe 16 is fixedly communicated with the hollow circular plate 17, the side wall of the hollow circular plate 17 is provided with a plurality of air suction holes 18, and the air inlet end of the ball 81 can be enabled to enter air from a plurality of directions at a high position through the plurality of air suction holes 18 at the upper end of the hollow circular plate 17, so that leaked hydrogen can be captured in time in the inspection process as much as possible.
The annular airbag sleeves 9 are fixedly connected to the two ends of the inner walls of the two semi-ring plates 1 on the same side together, the distribution assembly 10 communicated with the annular airbag sleeves 9 is jointly installed with the air supply mechanism 7 and the semi-ring plates 1 on the same side, the distribution assembly 10 comprises a distribution cavity 101 formed in the inner portion of each projection 71, the distribution cavity 101 is fixedly communicated with the air pipe 73, the distribution pipes 102 are fixedly inserted into the two cavity walls of the distribution cavity 101, the first normally closed electromagnetic valves 103 are arranged in the two distribution pipes 102, annular grooves 104 communicated with the annular airbag sleeves 9 are jointly formed in the two ends of the inner walls of the two semi-ring plates 1 on the same side, communicating pipes 105 are fixedly inserted into the two annular grooves 104 on the same side together, hoses 106 are fixedly connected with the corresponding annular grooves 104 together, the second normally closed electromagnetic valves 107 are arranged in the inner portions of the air pipe 73, the first normally closed electromagnetic valves 103 and the second normally closed electromagnetic valves 107 are electrically connected with the controller 14, the third normally closed electromagnetic valves 109 and 108 are fixedly inserted into the side walls of the two annular grooves 108, and the third normally closed electromagnetic valves 109 and 108 are arranged in the inner portions of the two circular pipes 108 and used for discharging the inner portions of the annular electromagnetic valves 104, and the annular grooves 104 can be retracted under the annular grooves 106, and the annular grooves 104 can not affect the running of the annular airbag sleeves 1, and the running on the annular airbag sleeves 106.
The four semi-annular plates 1 are jointly provided with the alternate travelling mechanism 11, the alternate travelling mechanism 11 comprises two travelling wheels 111 fixedly arranged on the inner wall of each semi-annular plate 1, the two travelling wheels 111 on the same side are symmetrically arranged, the wheel walls of each travelling wheel 111 are respectively propped against the outer pipe wall of the pipeline 2, the side walls of the two semi-annular plates 1 which are connected in a hinged mode are fixedly connected with the electric push rods 112 in an inserted mode, the output ends of the two electric push rods 112 are fixedly connected with the corresponding side walls of the semi-annular plates 1, the two electric push rods 112 are electrically connected with the controllers 14, side jacking columns 113 are fixedly connected with the side walls of the two side opposite sides of the two parallel semi-annular plates 1, travel switches 114 electrically connected with the controllers 14 are respectively arranged at the end portions of the two side jacking columns 113, and the controllers 14 control the semi-annular plates 1 to move towards the other sides after the travel switches 114 on one side are triggered.
The inner walls of the two semi-annular plates 1 arranged in parallel are provided with air pressure detection mechanisms 12, the two air pressure detection mechanisms 12 comprise mounting grooves 121 formed in the inner walls of the semi-annular plates 1, the mounting grooves 121 are arranged between the annular air bag sleeves 9 on the same side, the bottoms of the mounting grooves 121 are fixedly provided with air pressure automatic switches 122, the notches of the mounting grooves 121 are fixedly provided with elastic films 123, the two air pressure automatic switches 122 are electrically connected with the buzzer prompter 87 through the controller 14, under the action of air pressure, the movable contacts of the air pressure automatic switches 122 are closed in a back pressure mode, after the air pressure disappears, the movable contacts of the air pressure automatic switches 122 can rebound and reset under the action of elastic elements of the movable contacts, and the air pressure automatic switches are the prior art and are not repeated herein.
The two sides of the end face of the upper mounting plate 3 are provided with the air storage prompt mechanisms 13 matched with the air supply mechanism 7, the two air storage prompt mechanisms 13 comprise storage barrels 131 fixedly arranged on the end face of the upper mounting plate 3, the inner bottoms of the storage barrels 131 are fixedly provided with safety air bags 132, the side walls of the storage barrels 131 and the pipe walls of the air pipes 73 are fixedly connected with exhaust pipes 133 in an inserted mode, the exhaust pipes 133 are arranged above the second normally closed electromagnetic valves 107, the first normally open electromagnetic valves 134 are arranged in the exhaust pipes 133 and are communicated with the safety air bags 132, the side walls of the safety air bags 132 and the side walls of the storage barrels 131 are fixedly connected with tail air pipes 135 in an inserted mode, the second normally open electromagnetic valves 136 are arranged in the tail air pipes 135, the second electromagnetic switch 137 electrically connected with the columnar tin oxide 85 is installed on the end face of the lower mounting plate 4, the second electromagnetic switch 137 is electrically connected with the first normally open electromagnetic valve 134 and the second normally open electromagnetic valve 136 through the controller 14, compared with the first electromagnetic switch 86, the second electromagnetic switch 137 needs larger current when adsorbing the moving contact of the second electromagnetic switch, the air bag 132 is used for temporarily storing hydrogen when the concentration of the hydrogen is higher, and can be directly discharged through the tail gas pipe 135 when the concentration of the hydrogen is lower, because the concentration is lower, explosion and other risks cannot be caused, the outer surface of the air bag 132 is coated with fluorescent paint (or colored paint), and a reflective patch (not shown in the figure) is adhered to the outer surface of the air bag 132 for marking the position of the air bag 132 under the condition of dim light.
The air pressure pipes 19 are fixedly inserted into the lower ends of the side walls of the two air bags 132, the air pressure valves 20 are arranged in the two air pressure pipes 19, redundant air can be discharged after enough air is filled into the air bags 132 through the air pressure valves 20 in the air pressure pipes 19, and after the air is filled into the air bags 132, because the hydrogen is lighter, the hydrogen is positioned on the upper side of the air bags 132 compared with air, so that when the air pressure valves 20 are opened, the air on the lower side is discharged first, and the leakage of the hydrogen is reduced as much as possible.
The principle of operation of the present invention will now be described as follows: the four semi-ring plates 1 are sleeved at the right end of the outer side of the pipeline 2, the movable ends of the two semi-ring plates 1 on the same side are locked and fixed, and then the controller 14 is started;
after the controller 14 is started, the air pump 72 is immediately controlled to start working, and the second normally-closed electromagnetic valve 107 in the air pipe 73, the first normally-open electromagnetic valve 134 in the two exhaust pipes 133 and the first normally-closed electromagnetic valve 103 in the two shunt pipes 102 are synchronously controlled to be electrified and work, at this time, air conveyed by the air pump 72 enters the shunt cavity 101 through the air pipe 73, then, the air enters the corresponding annular grooves 104 through the two shunt pipes 102 and the hoses 106 respectively, and the air can be filled into the annular grooves 104 through the communicating pipes 105, the filled air can expand the annular air bag sleeves 9 and prop against the outer wall of the pipeline 2, the controller 14 controls the second normally-closed electromagnetic valve 107, the two first normally-open electromagnetic valves 134 and the two first normally-closed electromagnetic valves 103 to be electrified and then to be powered off after working for 5 seconds, at this time, the air conveyed by the air pump 72 enters the two exhaust pipes 133 through the air pipe 73, subsequently, air passes through the safety air bags 132 on two sides and is discharged through the tail air pipe 135, if a hydrogen leakage point exists at the position between the two annular air bag sleeves 9 on the same side of the pipeline 2, the leaked hydrogen can be quickly filled between the two annular air bag sleeves 9, so that the air pressure in a space formed by encircling the two annular air bag sleeves 9 with the pipeline 2 and the two semi-ring plates 1 on the same side is larger, the elastic membrane 123 can be expanded, the air pressure in the mounting groove 121 can be increased, under the action of the air pressure, the movable contact of the air pressure automatic switch 122 can be closed in a back pressure manner, at the moment, the connecting loop of the controller 14 and the buzzer prompt 87 can be connected, the buzzer prompt 87 can start to perform the ringing prompt work, and under the action of propping and sealing the two annular air bag sleeves 9 with the outer wall of the pipeline 2, the hydrogen leakage point can be temporarily plugged, reducing the escaping flow of hydrogen;
when the air pump 72 is operated, the air suction end of the air pump 72 can suck external air through the air suction pipe 74 and the air suction pipe 16 on the ball 81, and the hollow circular plate 17 and the air suction hole 18 on the air suction pipe 16, because the molecules of hydrogen are small (about 0.289 nanometers), the hydrogen can easily pass through the polytetrafluoroethylene selective transmission membrane 84 on the spherical insulating framework 83 in the air entering the ball 81, and because the molecules of each component of the air are large, the water vapor, the dust and the like in the air have large particle sizes, and the air cannot easily pass through the polytetrafluoroethylene selective transmission membrane 84, when the air passes through the inner convex baffle ring 88, the gap between the inner convex baffle ring 88 and the polytetrafluoroethylene selective transmission membrane 84 is reduced, and at the moment, if the air contains leaked hydrogen, the hydrogen can easily enter the polytetrafluoroethylene selective transmission membrane 84, under normal conditions, oxygen vacancies exist in crystal lattices of the columnar tin oxide 85, so that electron conduction is blocked, the resistance is higher, hydrogen entering the polytetrafluoroethylene selectively permeable membrane 84 reacts with the oxygen vacancies and forms water vapor when contacting the columnar tin oxide 85, the oxygen vacancies are reduced, the conductivity of the columnar tin oxide 85 is improved, the higher the hydrogen concentration is, the more the resistance of the columnar tin oxide 85 is reduced, the lower the resistance of the columnar tin oxide 85 is, the resistance in a connecting loop of the columnar tin oxide 85, the first electromagnetic switch 86 and the controller 14 is, the higher the current introduced into the first electromagnetic switch 86 is, the moving contact of the first electromagnetic switch 86 is magnetically closed, at the moment, the connecting loop between the buzzing prompter 87 and the controller 14 can be avoided, the buzzer prompt 87 can give a sounding prompt;
meanwhile, if the concentration of the hydrogen is higher, the resistance of the columnar tin oxide 85 is reduced more, at this time, the current flowing into the second electromagnetic switch 137 is enough to enable the second electromagnetic switch 137 to absorb the moving contact of the second electromagnetic switch 137, so that the second normally open electromagnetic valve 136 in the two tail gas pipes 135 can be electrified, at this time, the air discharged into the air bag 132 through the exhaust pipe 133 cannot be timely discharged through the tail gas pipes 135, so that the gas in the air bag 132 can be increased, under the action of the air pressure, the air bag 132 can be expanded and expanded to the outer side of the storage barrel 131, and the fluorescent paint, the colored pigment box reflective paste and the like on the surface of the air bag 132 are matched, so that personnel can conveniently see the air bag 132 under the condition of dim light, and the personnel can know that the leaked hydrogen concentration is higher when seeing the air bag 132 to be expanded, appropriate treatment measures can be timely adopted, the air bag 132 can temporarily store the leaked hydrogen, and the safety effect is improved;
meanwhile, after the controller 14 is powered off after controlling the second normally closed electromagnetic valve 107, the two first normally open electromagnetic valves 134 and the two first normally closed electromagnetic valves 103 to work for 5 seconds, the semi-ring plate 1 stays on the pipeline 2 for 20 seconds, when no hydrogen leakage is detected, the controller 14 controls the third normally closed electromagnetic valve 109 in the circular pipe 108 far away from the right end part of the pipeline 2 to be electrified and work for 3 seconds at regular time, at the moment, air in the two annular grooves 104 at the side is matched with the communicating pipe 105 to be discharged through the circular pipe 108, the annular airbag sleeve 9 retracts under the self elastic action to recover and separate from the pipeline 2, then, the controller 14 controls the two electric push rods 112 to output for 1 second at regular time, at the moment, the two semi-ring plates 1 far away from one side of the pipeline 2 are ejected for a fixed distance, then, the controller 14 controls the second electromagnetic valve 107 in the air conveying pipe 73 again, the first normally open electromagnetic valves 134 in the two exhaust pipes 133, and the first normally closed electromagnetic valve 103 inside the two shunt tubes 102 is electrified to work for 2.5 seconds, at this time, the annular air bag sleeve 9 on the two ejected semi-ring plates 1 is refilled with air, so that the annular air bag sleeve 9 can be re-inflated to abut against the outer wall of the pipeline 2, then the controller 14 controls the third normally closed electromagnetic valve 109 inside the circular tube 108 close to the right end of the pipeline 2 to be electrified to work for 3 seconds at regular time, at this time, the air inside the two annular grooves 104 on the side is matched with the communicating tube 105 to be discharged through the circular tube 108, then the controller 14 controls the two electric push rods 112 to retract for 1 second at regular time, because the annular air bag sleeve 9 on the two semi-ring plates 1 ejected the last time abuts against the pipeline 2, the two semi-ring plates 1 on the side can be fixed, so that when the electric push rods 112 retract, the other two half ring plates 1 can be pulled and moved for a fixed distance, then the controller 14 can control the second normally closed electromagnetic valve 107 in the gas pipe 73, the first normally open electromagnetic valve 134 in the two exhaust pipes 133 and the first normally closed electromagnetic valve 103 in the two shunt pipes 102 to work for 2.5 seconds, so that the two annular air bag sleeves 9 can be propped against the outer wall of the pipeline 2 again, after 2.5 seconds, the controller 14 can control the second normally closed electromagnetic valve 107 in the gas pipe 73, the first normally open electromagnetic valve 134 in the two exhaust pipes 133 and the first normally closed electromagnetic valve 103 in the two shunt pipes 102 to be powered off, and detect the new position of the pipeline 2, and wait for 20 seconds to detect, if hydrogen is not detected, the controller 14 controls the half ring plates 1 to move to the next position of the pipeline 2 again, if hydrogen leakage is detected in the middle, the movement of the control semi-annular plate 1 is stopped, the third normally-closed electromagnetic valve 109 in the circular tube 108 is not controlled to work, when the semi-annular plate 1 moves from the right end of the pipeline 2 to the left end of the pipeline 2, the travel switch 114 on the side jacking column 113 on the left semi-annular plate 1 impacts the side wall of the mounting flange at the left end of the pipeline 2, at the moment, the travel switch 114 is closed under the impact extrusion action, the moving contact of the travel switch 114 is closed, a certain electric signal is given to the controller 14 after the moving contact of the travel switch 114 is closed, the controller 14 then controls the third normally-closed electromagnetic valve 109 in the two circular tubes 108 to work, at the moment, the air in the two annular air bag sleeves 9 is completely discharged, and after 3 seconds, the controller 14 controls the second normally-closed electromagnetic valve 107 in the air pipe 73 and the first normally-open electromagnetic valve 134 in the two air pipes 133, and the first normally closed solenoid valve 103 inside the left shunt 102 is energized for 2.5 seconds, then the controller 14 activates the electric push rod 112 for 1 second of retraction, at which point the entire device begins the return cruise operation on the conduit 2 until the right travel switch 114 is triggered.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The utility model provides an explosive gas detection device, includes four semi-ring plates (1) and is used for carrying pipeline (2) of hydrogen, its characterized in that, two of homonymy semi-ring plates (1) are articulated each other and are set up, two of homonymy semi-ring plates (1) all cut the cutting ferrule in the outside setting of pipeline (2), the upper and lower both sides of pipeline (2) are provided with mounting panel (3) and lower mounting panel (4) respectively, and each the lateral wall one end of semi-ring plates (1) all fixed mounting has T shape slider (5), and the terminal surface of mounting panel (3) and lower mounting panel (4) all sets up T shape spout (6) with T shape slider (5) assorted, air feed mechanism (7) are installed to the terminal surface of mounting panel (3), separation detection mechanism (8) are installed to the inlet end of air feed mechanism (7), and two of homonymy semi-ring plates (1) all fixedly connected with annular gasbag cover (9) jointly, air feed mechanism (7) and each semi-ring plates (1) install jointly and each annular cover the annular gasbag cover (9) and install two semi-ring plates (10) and detect that the semi-ring plates (1) are parallel with each other, and two semi-ring plates (1) are installed and are connected together and air feed mechanism (12) and are installed simultaneously, the two sides of the end face of the upper mounting plate (3) are provided with an air storage prompt mechanism (13) matched with the air supply mechanism (7), and the lower end of the lower mounting plate (4) is fixedly provided with a controller (14) and a storage battery assembly (15).
2. The explosive gas detection device according to claim 1, wherein the gas supply mechanism (7) comprises a bump (71) integrally formed on the end face of the upper mounting plate (3), an air pump (72) is fixedly mounted on the end face of the bump (71), a gas pipe (73) is fixedly mounted at the output end of the air pump (72), a gas suction pipe (74) is fixedly communicated with the gas suction end of the air pump (72), and the air pump (72) is electrically connected with the controller (14).
3. The explosive gas detection device according to claim 2, wherein the separation detection mechanism (8) comprises a ball (81) arranged above the air pump (72), the ball (81) is arranged in a hollow mode, a supporting rod (82) is fixedly installed between the ball (81) and the protruding block (71), a spherical insulating framework (83) is installed inside the ball (81), a polytetrafluoroethylene selective permeable membrane (84) is fixedly wrapped on the outer side wall of the spherical insulating framework (83), a columnar tin oxide (85) is fixedly installed inside the spherical insulating framework (83), a first electromagnetic switch (86) and a buzzer prompt (87) are fixedly installed on the lower mounting plate (4), the first electromagnetic switch (86) is electrically connected with the columnar tin oxide (85) through the controller (14), the buzzer prompt (87) is electrically connected with the first electromagnetic switch (86) through the controller (14), and an inner convex ring (88) is integrally formed on the upper side of the inner wall of the ball (81).
4. The explosive gas detection device according to claim 3, wherein the shunt assembly (10) comprises a shunt cavity (101) formed inside a bump (71), the shunt cavity (101) is fixedly communicated with a gas pipe (73), two cavity walls of the shunt cavity (101) are fixedly connected with the shunt pipe (102) in a plugging mode, a first normally-closed electromagnetic valve (103) is arranged inside the shunt pipe (102), annular grooves (104) communicated with an annular airbag sleeve (9) are formed in two ends of the inner wall of the same-side two semi-annular plates (1) jointly, a communicating pipe (105) is fixedly connected with the two annular grooves (104) on the same side jointly, a hose (106) is fixedly connected with the pipe end of the shunt pipe (102) jointly with the corresponding annular groove (104), a second normally-closed electromagnetic valve (107) is arranged inside the gas pipe (73), the first normally-closed electromagnetic valve (103) and the second normally-closed electromagnetic valve (107) are electrically connected with a controller (14), and the side walls of the two normally-closed electromagnetic valves (108) are fixedly connected with the corresponding annular grooves (108), and the two normally-closed electromagnetic valves (108) are fixedly connected with the inner side walls (109).
5. The explosive gas detection device according to claim 1, wherein the alternating travelling mechanism (11) comprises two travelling wheels (111) fixedly arranged on the inner wall of each semi-annular plate (1), the two travelling wheels (111) on the same side are symmetrically arranged, the wheel walls of the travelling wheels (111) are respectively propped against the outer pipe wall of the pipeline (2), the side walls of the semi-annular plates (1) which are connected in a hinged manner are respectively fixedly inserted with an electric push rod (112), the output ends of the two electric push rods (112) are respectively fixedly connected with the side walls of the corresponding semi-annular plates (1), the two electric push rods (112) are respectively electrically connected with the controller (14), side jacking columns (113) are respectively fixedly connected with the side walls on the opposite sides of the two parallel semi-annular plates (1), and travel switches (114) electrically connected with the controller (14) are respectively arranged at the end parts of the two side jacking columns (113).
6. An explosive gas detection device according to claim 3, wherein the two gas pressure detection mechanisms (12) comprise mounting grooves (121) formed in the inner wall of the semi-annular plate (1), the mounting grooves (121) are arranged between the annular air bag sleeves (9) on the same side, gas pressure automatic switches (122) are fixedly arranged at the bottoms of the mounting grooves (121), elastic films (123) are fixedly packaged at the notch of the mounting grooves (121), and the two gas pressure automatic switches (122) are electrically connected with the buzzer prompt (87) through the controller (14).
7. The explosive gas detection device according to claim 4, wherein the two gas storage prompt mechanisms (13) each comprise a storage barrel (131) fixedly installed on the end face of the upper mounting plate (3), an airbag (132) is fixedly installed at the inner bottom of the storage barrel (131), an exhaust pipe (133) is fixedly inserted into the side wall of the storage barrel (131) and the pipe wall of the gas pipe (73) together, the exhaust pipe (133) is located above the second normally closed electromagnetic valve (107), a first normally open electromagnetic valve (134) is installed in the exhaust pipe (133), the exhaust pipe (133) is communicated with the airbag (132), a tail gas pipe (135) is fixedly inserted into the side wall of the airbag (132) and the side wall of the storage barrel (131) together, a second normally open electromagnetic valve (136) is installed in the inner portion of the tail gas pipe (135), a second electromagnetic switch (137) electrically connected with the columnar tin oxide (85) is installed at the end face of the lower mounting plate (4), and the second electromagnetic switch (137) is electrically connected with the first normally open electromagnetic valve (134) and the second normally open electromagnetic valve (136) through the controller (14).
8. An explosive gas detection device according to claim 3, characterized in that the opening of the ball (81) is fixedly inserted with an air inlet pipe (16), the pipe end of the air inlet pipe (16) is fixedly communicated with a hollow circular plate (17), and the side wall of the hollow circular plate (17) is provided with a plurality of air suction holes (18).
9. An explosive gas detection device according to claim 7, characterized in that the lower ends of the side walls of the two safety airbags (132) are fixedly inserted with air pressure pipes (19), and the inside of the two air pressure pipes (19) is provided with an air pressure valve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311173796.6A CN117267627A (en) | 2023-09-12 | 2023-09-12 | Explosive gas detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311173796.6A CN117267627A (en) | 2023-09-12 | 2023-09-12 | Explosive gas detection device |
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| CN117267627A true CN117267627A (en) | 2023-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989452A (en) * | 2024-04-03 | 2024-05-07 | 西安黑石智能科技有限公司 | Gas detection device and method for dangerous chemical gas pipeline leakage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989452A (en) * | 2024-04-03 | 2024-05-07 | 西安黑石智能科技有限公司 | Gas detection device and method for dangerous chemical gas pipeline leakage |
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