CN114067538B - Gas leakage monitoring device - Google Patents
Gas leakage monitoring device Download PDFInfo
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- CN114067538B CN114067538B CN202210024100.2A CN202210024100A CN114067538B CN 114067538 B CN114067538 B CN 114067538B CN 202210024100 A CN202210024100 A CN 202210024100A CN 114067538 B CN114067538 B CN 114067538B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention discloses a gas leakage monitoring device, which comprises a valve, wherein the valve is arranged between a natural gas pipe and a rubber pipe, fasteners are sleeved on the natural gas pipe and the rubber pipe, the upper ends of the two fasteners are fixedly connected with supporting columns, and the upper ends of the two supporting columns are fixedly connected with an installation block together; the lower extreme of installation piece is equipped with rotates the groove, the interior top in rotation groove is connected with the sleeve voluntarily, it is equipped with the speed reducer to rotate the inslot, the equal fixedly connected with connecting rod in the left and right sides of speed reducer, two the one end that the speed reducer was kept away from to the connecting rod respectively with the left and right sides inner wall fixed connection who rotates the groove. The device can start immediately after detecting that the gas is revealed and close the valve to avoid too much gas to reveal, and utilize the flabellum to purify indoor air, absorb the partial gas of revealing, audible-visual annunciator is in alarm state always simultaneously, reminds personnel on every side to carry out timely processing.
Description
Technical Field
The invention relates to the technical field of gas leakage monitoring, in particular to a gas leakage monitoring device.
Background
Under the rapid development of economy, every industry all starts to use the gas, and the gas pipeline almost extends to each family, the life of people of being convenient for, nevertheless current gas pipeline still has following problem in the use:
the existing gas pipeline is usually used for connecting a rubber pipe of a gas element with a natural gas pipe, a valve is arranged near the joint, a wing plate of the valve is opened during normal use, the rubber pipe is aged and corroded during long-term use, gas leakage can be caused, and if the gas leakage is not found in time, accidents such as gas explosion can happen, so that the problem needs to be reasonably solved.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a gas leakage monitoring device which can be started to close a valve immediately after gas leakage is detected, so that excessive gas leakage is avoided, indoor air is purified by using fan blades, the leaked partial gas is absorbed, and meanwhile, an audible and visual alarm is always in an alarm state to remind surrounding personnel to perform timely treatment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gas leakage monitoring device comprises a valve, wherein the valve is arranged between a natural gas pipe and a rubber pipe, fasteners are sleeved on the natural gas pipe and the rubber pipe, supporting columns are fixedly connected to the upper ends of the two fasteners, and an installation block is fixedly connected to the upper ends of the two supporting columns; the lower end of the mounting block is provided with a rotating groove, the inner top of the rotating groove is actively connected with a sleeve, a speed reducer is arranged in the rotating groove, the left side and the right side of the speed reducer are both fixedly connected with connecting rods, one ends of the two connecting rods, far away from the speed reducer, are respectively fixedly connected with the inner walls of the left side and the right side of the rotating groove, the lower end of the sleeve is fixedly connected with an input shaft of the speed reducer, the tail end of an output shaft of the speed reducer is fixedly connected with a disc, the lower end of the disc is fixedly connected with two telescopic rods, the telescopic ends of the two telescopic rods are fixedly connected with a transverse plate together, the lower end of the transverse plate is fixedly connected with two vertical rods, and the adjacent surfaces of the transverse plate and the disc are elastically connected through a fourth spring; an air suction cavity is arranged in the mounting block, an air suction mechanism is arranged in the air suction cavity, and the air suction mechanism is used for absorbing leaked fuel gas; the mounting block is internally provided with a conductive cavity, and a trigger mechanism for controlling an air suction mechanism is arranged in the conductive cavity.
Preferably, the mechanism of induced drafting is including setting up the driving motor in installation piece upper end, driving motor's output shaft end extends to induced draft intracavity and fixedly connected with bull stick, the bull stick rotates with interior bottom with the interior top in the chamber of induced drafting and is connected, the outer wall of bull stick is equipped with a plurality of flabellums along its axial, two air intakes have been seted up at the interior top in the chamber of induced drafting, the right side of installation piece is installed and is collected the box, be equipped with the otter board in the collection box, the methane adsorbent has been placed to the top of otter board, the right side space in the chamber of induced drafting passes through the nozzle stub intercommunication with the headspace of collecting the box, the bottom space of collecting the box communicates through the venthole with the external world.
Preferably, a square groove is formed in the upper end of the sleeve, the lower end of the rotating rod extends into the square groove, a rectangular groove is formed in the lower end of the rotating rod, a limiting groove is formed in the inner bottom of the square groove, a limiting block is arranged in the limiting groove and is in sliding connection with the inner wall of the limiting groove, a second electromagnet is arranged at the inner bottom of the limiting groove and is elastically connected with the adjacent surface of the limiting block through a third spring, the limiting block is magnetic, the transverse plate has electrical conductivity, and conductive blocks matched with the transverse plate are arranged on the inner walls of the left side and the right side of the rotating groove.
Preferably, trigger mechanism is including setting up the current conducting plate in electrically conductive intracavity, the inner wall sliding connection in current conducting plate and electrically conductive chamber, be equipped with the first conducting strip with current conducting plate matched with on the left and right sides inner wall in electrically conductive chamber, the upper end of current conducting plate and the interior top in electrically conductive chamber pass through second spring elastic connection.
Preferably, be equipped with perpendicular chamber in the installation piece, perpendicular chamber is located the top in electrically conductive chamber, the interior bottom in perpendicular chamber is equipped with first electro-magnet, erect the intracavity and be equipped with the piston, the piston passes through first spring elastic connection with the adjacent surface of first electro-magnet, erect the chamber and be located piston top space and external through the intake pipe intercommunication, erect the chamber and be located piston top space and pass through the outlet duct intercommunication with the gas that the rotation trench is located disc top space, be equipped with folding gasbag between the adjacent surface of disc and diaphragm, the upper end and the rotation trench of folding gasbag are located disc top space and pass through the thick pipe intercommunication, the lower extreme and the external tubule intercommunication that pass through of folding gasbag, all be equipped with the check valve on intake pipe and the outlet duct.
Preferably, a catalytic type combustible gas sensor is installed at the left side of the installation block.
Preferably, an audible and visual alarm is installed at the upper end of the installation block, the piston has conductivity, second conducting strips matched with the piston are arranged on the inner walls of the left side and the right side of the vertical cavity, and the check valve on the air inlet pipe is a one-way electromagnetic valve.
Preferably, a touch delay switch is installed on the left side of the installation block.
The invention has the following beneficial effects:
1. compared with the prior art, when gas leakage occurs, the two vertical rods can move downwards, and when the gas leakage occurs, the two vertical rods can rotate to the specified position, so that the valve is closed, and the condition that gas explosion occurs due to excessive gas leakage is avoided;
2. compared with the prior art, when the fuel gas leaks, the fan blades can rotate, so that the indoor air continuously passes through the methane adsorbent, and the residue of the indoor fuel gas is reduced;
3. compared with the prior art, when taking place the gas and revealing, can make audible-visual annunciator report to the police immediately this moment and remind and carry out corresponding measure, when indoor nobody simultaneously, audible-visual annunciator was in alarm state always this moment, avoids people to go home the condition emergence of not knowing the gas and revealing.
Drawings
Fig. 1 is a schematic structural diagram of a gas leakage monitoring device according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure: the device comprises a mounting block 1, a valve 2, a natural gas pipe 3, a rubber pipe 4, a driving motor 5, an air inlet 6, a rotating rod 7, an air suction cavity 8, fan blades 9, a catalytic combustible gas sensor 10, a rotating groove 11, a collecting box 12, a vertical rod 13, a thin pipe 14, a folding air bag 15, a telescopic rod 16, a circular disk 17, a connecting rod 18, an air inlet pipe 19, a vertical cavity 20, a piston 21, a conductive cavity 22, a first conductive sheet 23, a conductive sheet 24, a first spring 25, a first electromagnet 26, a second spring 27, an air outlet pipe 28, a speed reducer 29, a sleeve 30, a rectangular groove 31, a limiting groove 32, a limiting block 33, a third spring 34, a second electromagnet 35, a touch delay switch 36, a second conductive sheet 37, an acousto-optic alarm 38 and a transverse plate 39.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
Referring to fig. 1-4, a gas leakage monitoring device comprises a valve 2, the valve 2 is installed between a natural gas pipe 3 and a rubber pipe 4, the natural gas pipe 3 and the rubber pipe 4 are both sleeved with fasteners, the fasteners are the existing devices, the fasteners can be fixed on the pipeline through bolts and threaded holes, the upper ends of the two fasteners are fixedly connected with supporting columns, the upper ends of the two supporting columns are fixedly connected with a mounting block 1 together, the left side of the mounting block 1 is provided with a catalytic combustible gas sensor 10, a detection element is arranged in the detection element, a metal platinum wire is arranged in the detection element, the combustible gas generates flameless combustion under the action of the surface of a carrier of the detection element and a catalyst, the temperature of the carrier is increased, the platinum wire resistor in the installation block is correspondingly raised, the lower end of the installation block 1 is provided with a rotating groove 11, the inner top of the rotating groove 11 is actively connected with a sleeve 30, and a speed reducer 29 is arranged in the rotating groove 11;
wherein, the speed reducer 29 is the prior art, which can reduce the speed of the rotating position of the rotating rod 7, the left and right sides of the speed reducer 29 are fixedly connected with the connecting rods 18, one ends of the two connecting rods 18 far away from the speed reducer 29 are respectively fixedly connected with the inner walls of the left and right sides of the rotating groove 11, the lower end of the sleeve 30 is fixedly connected with the input shaft of the speed reducer 29, the speed reducer 29 limits the rotating speed of the disc 17 to avoid the damage of the valve 2 caused by the over-high speed, the disc 17 is fixedly connected with the tail end of the output shaft of the speed reducer 29, the lower end of the disc 17 is fixedly connected with the two telescopic rods 16, the telescopic ends of the two telescopic rods 16 are fixedly connected with the horizontal plate 39 together, the lower end of the horizontal plate 39 is fixedly connected with the two vertical rods 13, the two vertical rods 13 are arranged in a staggered manner, after the two vertical rods 13 are moved downwards, exactly one vertical rod 13 is positioned at the front side of the twist switch of the valve 2, the other vertical rod 13 is positioned at the rear side of the twist switch of the valve 2, just to clamp the twist switch of the valve 2, the transverse plate 39 is elastically connected to the adjacent surface of the disc 17 by a fourth spring.
Wherein, be equipped with air suction chamber 8 in the installation piece 1, be equipped with the mechanism of induced drafting in air suction chamber 8, the mechanism of induced drafting is used for absorbing the gas of revealing, the mechanism of induced drafting is including setting up driving motor 5 in installation piece 1 upper end, driving motor 5's output shaft end extends to in air suction chamber 8 and fixedly connected with bull stick 7, bull stick 7 rotates with interior bottom with the interior top in air suction chamber 8 and is connected, the outer wall of bull stick 7 is equipped with a plurality of flabellums 9 along its axial, two air intakes 6 have been seted up at air suction chamber 8's interior top, collection box 12 is installed on installation piece 1's right side, be equipped with the otter board in the collection box 12, the methane adsorbent has been placed to the top of otter board, air suction chamber 8's right side space and collection box 12's top space pass through the nozzle stub intercommunication, collect box 12's bottom space and external world through the venthole intercommunication.
Wherein, be equipped with electrically conductive chamber 22 in the installation piece 1, be equipped with the trigger mechanism who is used for control induced draft mechanism in the electrically conductive chamber 22, trigger mechanism is including setting up the conducting plate 24 in electrically conductive chamber 22, conducting plate 24 is made for magnetic material, the inner wall sliding connection of conducting plate 24 and electrically conductive chamber 22, be equipped with the first conducting strip 23 with conducting plate 24 matched with on the left and right sides inner wall of electrically conductive chamber 22, second spring 27 elastic connection is passed through at the upper end of conducting plate 24 and the interior top in electrically conductive chamber 22, can set up an external power supply, be located left first conducting strip 23, conducting plate 24, first conducting strip 23 and driving motor 5 that are located the right side constitute a return circuit through the wire.
Wherein, the upper end of the sleeve 30 is provided with a square groove, the lower end of the rotating rod 7 extends into the square groove, the lower end of the rotating rod 7 is provided with a rectangular groove 31, the inner bottom of the square groove is provided with a limit groove 32, a limit block 33 is arranged in the limit groove 32, the limit block 33 is rectangular, the limit block 33 is connected with the inner wall of the limit groove 32 in a sliding way, the inner bottom of the limit groove 32 is provided with a second electromagnet 35, the adjacent surface of the second electromagnet 35 and the limit block 33 is elastically connected through a third spring 34, the limit block 33 has magnetism, the transverse plate 39 has conductivity, the two vertical rods 13 are made of light materials, the inner walls of the left side and the right side of the rotating groove 11 are provided with conductive blocks matched with the transverse plate 39, and the external power supply, the conductive block on the left side, the transverse plate 39, the conductive block on the right side and the second electromagnet 35 form a loop through wires.
Wherein, a vertical cavity 20 is arranged in the mounting block 1, the vertical cavity 20 is positioned above the conductive cavity 22, a first electromagnet 26 is arranged at the inner bottom of the vertical cavity 20, an external power supply, a metal platinum wire and the first electromagnet 26 form a loop through a conducting wire, a piston 21 is arranged in the vertical cavity 20, the piston 21 is made of iron material, the piston 21 is in sliding connection with the inner wall of the vertical cavity 20, the adjacent surface of the piston 21 and the first electromagnet 26 is elastically connected through a first spring 25, the elastic coefficient of the first spring 25 is larger, so that the piston 21 moves up faster, the space above the piston 21 of the vertical cavity 20 is communicated with the outside through an air inlet pipe 19, the space above the piston 21 of the vertical cavity 20 is communicated with the gas above the disc 17 of the rotating groove 11 through an air outlet pipe 28, a vent communicated with the external is arranged at the front side of the space below the piston 21 of the vertical cavity 20, a folding airbag 15 is arranged between the adjacent surfaces of the disc 17 and the transverse plate 39, the upper end of folding gasbag 15 is located disc 17 top space with rotation groove 11 and passes through the thick pipe intercommunication, the lower extreme of folding gasbag 15 and external world pass through tubule 14 intercommunication, the pipe diameter of thick pipe is the triple of tubule 14, make folding gasbag 15 move down fast after can not shift up immediately, all be equipped with the check valve on intake pipe 19 and the outlet duct 28, external gas passes through intake pipe 19 one-way entering to the top space of erecting chamber 20 in, the gas of the top space of erecting chamber 20 passes through the one-way top space that enters into to rotation groove 11 of outlet duct 28.
The invention can be illustrated by the following operating modes: sleeving the two fasteners on the natural gas pipe 3 and the rubber pipe 4 respectively, screwing the bolts on the two buckles, fixing the mounting block 1, and aligning the center of the transverse plate 39 with the switch of the valve 2;
in the initial state, the temperature of the platinum wire in the detection element is not increased, and at the moment, the current passing through the first electromagnet 26 is larger, so that the magnetism of the first electromagnet 26 is larger, the piston 21 and the conductive plate 24 are attracted to move relatively, and the first spring 25 and the second spring 27 are both in a compressed state;
when the rubber tube 4 is damaged and gas leaks, the gas enters the catalytic combustible gas sensor 10, and when the gas passes through the catalytic combustible gas sensor 10, the gas is flameless combusted on the surface of the detection element under the action of the catalyst on the detection element, so that the temperature of a metal platinum wire in the detection element is increased, and the resistance is increased;
when the resistance of the platinum wire increases, at this time, by the decrease of the current passing through the first electromagnet 26, the magnetism generated by the first electromagnet 26 decreases, so that the attraction force to the piston 21 and the conductive plate 24 decreases, the piston 21 moves upward by the elastic action of the first spring 25, and the conductive plate 24 moves downward by the elastic action of the second spring 27;
the conductive plate 24 moves downwards to be in contact with the two first conductive plates 23, the driving motor 5 is powered on at the moment, the driving motor 5 can drive the rotating rod 7 to rotate after being powered on, the rotating rod 7 can drive the fan blades 9 to rotate so as to suck external gas into the air suction cavity 8, then the external gas enters the collection box 12 through the short pipe, the gas can bring the leaked gas into the collection box 12, methane in the air can be absorbed by a methane absorbent in the collection box 12, the air after being absorbed and filtered is discharged to the outside through the air outlet, and therefore the residue of the indoor gas can be reduced when the gas leaks;
meanwhile, when the piston 21 moves upwards, the space above the vertical cavity 20 is reduced, the air pressure is increased, and at the moment, the air enters the space above the rotating groove 11 through the air outlet pipe 28, so that the air in the space above the rotating groove 11 is increased, the air pressure is increased, and redundant air enters the folding air bag 15 through the thick pipe, so that the folding air bag 15 is expanded downwards;
when the folding airbag 15 expands downwards, the transverse plate 39 moves downwards to drive the two vertical rods 13 to move downwards, the two vertical rods 13 are respectively located at the front side and the rear side of the valve 2, when the transverse plate 39 moves downwards to be in contact with the two conductive blocks, the second electromagnet 35 is powered on at the moment, and when the second electromagnet 35 is powered on, a repulsive force effect is generated on the limiting block 33, so that the limiting block 33 moves upwards, and the limiting block 33 enters the rectangular groove 31 (because the rotating rod 7 is in a rotating state, when the limiting block 33 moves upwards and cannot enter the rectangular groove 31, under the repulsive force effect of the second electromagnet 35, the upper end of the limiting block 33 abuts against the lower end of the rotating rod 7, and when the rectangular groove 31 rotates to be aligned with the limiting block 33, the limiting block 33 can also rapidly enter the rectangular groove 31);
at the moment, the sleeve 30 is fixed with the rotating rod 7, and the lower end of the sleeve 30 is fixedly connected with the input shaft of the speed reducer 29, so that under the speed reducing action of the speed reducer 29, the rotating speed of the disc 17 is relatively slow, the transverse plate 39 can be driven to rotate slowly, the two vertical rods 13 can be driven to rotate, the two vertical rods 13 can drive the valve 2 to rotate, the valve 2 is closed, and the situation that the indoor gas concentration is too high and explosion occurs due to too much gas leakage is avoided;
because the elastic coefficient of the first spring 25 is larger, the piston 21 moves upwards instantly, gas enters the folded air bag 15 instantly at the moment, and because the pipe diameter of the thick pipe is three times of that of the thin pipe 14, the gas entering the folded air bag 15 cannot be discharged through the thin pipe 14 instantly, so that the folded air bag 15 expands to enable the transverse plate 39 to be in contact with the two conductive blocks;
during the period of time when the valve 2 is turned on and off, at this time, because gas still enters the folded air bag 15 (i.e. when the piston 21 moves upwards and does not move upwards to the limit position, the transverse plate 39 cannot move downwards due to the limit effect of the two conductive blocks, and the folded air bag 15 cannot expand any more), at this time, the rate of the gas entering the folded air bag 15 is the same as the rate of the gas discharged through the thin tube 14, and the folded air bag 15 cannot move upwards immediately, so that the transverse plate 39 is in contact with the two conductive blocks for a period of time, when the valve 2 is just screwed down, no more gas enters the folded air bag 15, under the elastic action of the fourth spring, the transverse plate 39 is driven to move upwards, at this time, the folded air bag 15 contracts, the gas in the folded air bag 15 enters and is slowly discharged through the thin tube 14, the transverse plate 39 and the two conductive blocks fall off, and the second electromagnet 35 is not electrified any more, at this time, under the elastic action of the third spring 34, the limiting block 33 will be separated from the limiting groove 32, and at this time, the rotating rod 7 no longer drives the sleeve 30 to rotate;
after the valve 2 is screwed, the driving motor 5 is still in a rotating state at this time, so that leaked gas is absorbed as much as possible, when the concentration of the indoor gas is reduced to a safe value range, flameless combustion is not generated on the surface of the detection element at this time, so that the temperature of the metal platinum wire is not increased any more, the metal platinum wire can perform passive heat dissipation to reduce the temperature of the surface of the gas along with the passage of time, when the temperature of the metal platinum wire is reduced to a certain degree, the magnetism of the first electromagnet 26 is increased again at this time, so that the piston 21 and the conductive plate 24 are attracted to move relatively, so that the conductive plate 24 is separated from the two first conductive plates 23, at this time, the driving motor 5 is powered off, and meanwhile, the piston 21 moves downwards to attract external gas into the space above the vertical cavity 20 through the air inlet pipe 19.
Compared with the prior art, when gas leakage occurs, the two vertical rods 13 can move downwards, and when the gas leakage occurs, the two vertical rods 13 can rotate at the moment, so that the valve 2 is closed, and the gas explosion caused by excessive gas leakage is avoided;
when the gas is revealed, a plurality of fan blades 9 can be rotated, so that the indoor air continuously passes through the methane adsorbent, and the residue of the indoor gas is reduced.
Example 2
Referring to fig. 5, the difference between this embodiment and embodiment 1 is that the upper end of the mounting block 1 is provided with an audible and visual alarm 38 and an external power supply, the second conductive plate 37 located on the left side, the piston 21, the second conductive plate 37 located on the right side and the audible and visual alarm 38 form a loop, the piston 21 has conductivity, the second conductive plates 37 matched with the piston 21 are arranged on the inner walls of the left and right sides of the vertical cavity 20, the air inlet pipe 19 is further provided with a normally closed electromagnetic valve, the left side of the mounting block 1 is provided with a touch delay switch 36, and the external power supply, the touch delay switch 36 and the electromagnetic valve form a closed loop.
In the embodiment, when gas leakage occurs, the piston 21 moves upwards to be in contact with the two second conducting strips 37, the audible and visual alarm 38 gives an alarm to remind people of overhauling, and the normally closed one-way electromagnetic valve is arranged on the air inlet pipe 19, so that when the indoor gas content is reduced to a safe range, the piston 21 still cannot move downwards, the audible and visual alarm 38 is always in a working state, the gas leakage when no person exists in the room is avoided, and the gas leakage is not known when people go home;
when people find that gas leaks, only need to open a window immediately for ventilation, and simultaneously when driving motor 5 stops working, press touch delay switch 36 for solenoid valve on the intake pipe 19 is switched on, and intake pipe 19 is opened a period of time, makes piston 21 move down, and audible-visual alarm 38 cuts off the power supply, the use of next time of being convenient for, when piston 21 moves down to initial position, intake pipe 19 outage this moment, intake pipe 19 is airtight once more.
Compared with the prior art, when taking place the gas and revealing, can make audible-visual annunciator 38 report to the police immediately this moment and remind and carry out corresponding measure, when indoor nobody simultaneously, audible-visual annunciator 38 was in alarm state always this moment, avoided people to go home the condition emergence of not knowing the gas and revealing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (4)
1. The utility model provides a monitoring devices is revealed in gas, includes valve (2), its characterized in that: the valve (2) is arranged between the natural gas pipe (3) and the rubber pipe (4), fasteners are sleeved on the natural gas pipe (3) and the rubber pipe (4), supporting columns are fixedly connected to the upper ends of the two fasteners, and the upper ends of the two supporting columns are fixedly connected with the mounting block (1) together;
the lower end of the mounting block (1) is provided with a rotating groove (11), the inner top of the rotating groove (11) is actively connected with a sleeve (30), a speed reducer (29) is arranged in the rotating groove (11), the left side and the right side of the speed reducer (29) are both fixedly connected with connecting rods (18), one ends of the two connecting rods (18) far away from the speed reducer (29) are respectively and fixedly connected with the inner walls of the left side and the right side of the rotating groove (11), the lower end of the sleeve (30) is fixedly connected with an input shaft of a speed reducer (29), the tail end of an output shaft of the speed reducer (29) is fixedly connected with a disc (17), the lower end of the disc (17) is fixedly connected with two telescopic rods (16), the telescopic ends of the two telescopic rods (16) are fixedly connected with a transverse plate (39) together, the lower end of the transverse plate (39) is fixedly connected with two vertical rods (13), and the transverse plate (39) is elastically connected with the adjacent surface of the disc (17) through a fourth spring;
an air suction cavity (8) is arranged in the mounting block (1), an air suction mechanism is arranged in the air suction cavity (8), and the air suction mechanism is used for absorbing leaked fuel gas; the air suction mechanism comprises a driving motor (5) arranged at the upper end of the mounting block (1), and the tail end of an output shaft of the driving motor (5) extends into the air suction cavity (8) and is fixedly connected with a rotating rod (7); the upper end of the sleeve (30) is provided with a square groove, the lower end of the rotating rod (7) extends into the square groove, the lower end of the rotating rod (7) is provided with a rectangular groove (31), the inner bottom of the square groove is provided with a limiting groove (32), a limiting block (33) is arranged in the limiting groove (32), the limiting block (33) is connected with the inner wall of the limiting groove (32) in a sliding mode, the inner bottom of the limiting groove (32) is provided with a second electromagnet (35), the adjacent surface of the second electromagnet (35) and the limiting block (33) is elastically connected through a third spring (34), the limiting block (33) is magnetic, the transverse plate (39) is conductive, and conductive blocks matched with the transverse plate (39) are arranged on the inner walls of the left side and the right side of the rotating groove (11); a conductive cavity (22) is arranged in the mounting block (1), and a trigger mechanism for controlling an air suction mechanism is arranged in the conductive cavity (22); the trigger mechanism comprises a conductive plate (24) arranged in a conductive cavity (22), the conductive plate (24) is connected with the inner wall of the conductive cavity (22) in a sliding mode, first conductive plates (23) matched with the conductive plate (24) are arranged on the inner walls of the left side and the right side of the conductive cavity (22), and the upper end of the conductive plate (24) is elastically connected with the inner top of the conductive cavity (22) through a second spring (27);
the installation structure is characterized in that a vertical cavity (20) is arranged in the installation block (1), the vertical cavity (20) is positioned above the conductive cavity (22), a first electromagnet (26) is arranged at the inner bottom of the vertical cavity (20), a piston (21) is arranged in the vertical cavity (20), the piston (21) is in sliding connection with the inner wall of the vertical cavity (20), the adjacent surface of the piston (21) and the first electromagnet (26) is elastically connected through a first spring (25), the space above the piston (21) and the vertical cavity (20) is communicated with the outside through an air inlet pipe (19), the space above the piston (21) and the rotating groove (11) of the vertical cavity (20) is communicated with the space above the disc (17) through an air outlet pipe (28), a folding air bag (15) is arranged between the adjacent surface of the disc (17) and the transverse plate (39), the upper end of the folding air bag (15) is communicated with the space above the rotating groove (11) and the disc (17) through a thick pipe, the lower end of the folding air bag (15) is communicated with the outside through a thin tube (14), and the air inlet tube (19) and the air outlet tube (28) are both provided with one-way valves;
a catalytic combustible gas sensor (10) is arranged on the left side of the mounting block (1);
when the rubber tube (4) is damaged and gas leaks, the gas enters the catalytic combustible gas sensor (10), due to the action of a catalyst on the detection element, the gas combusts on the surface of the detection element in a flameless manner, the temperature of a metal platinum wire in the detection element is increased, the resistance is increased, the current passing through the first electromagnet (26) is reduced, the attraction force to the piston (21) and the conductive plate (24) is reduced, the piston (21) moves upwards under the elastic action of the first spring (25), and the conductive plate (24) moves downwards under the elastic action of the second spring (27);
the conducting plate (24) moves downwards to be in contact with the two first conducting plates (23), and the driving motor (5) is electrified to drive the rotating rod (7) to rotate;
meanwhile, when the piston (21) moves upwards, the space above the vertical cavity (20) is reduced, the air pressure is increased, at the moment, the air enters the space above the rotating groove (11) through the air outlet pipe (28), so that the air in the space above the rotating groove (11) is increased, the air pressure is increased, and the redundant air enters the folding air bag (15) through the thick pipe, so that the folding air bag (15) is expanded downwards; the transverse plate (39) moves downwards, the transverse plate (39) moves downwards to drive the two vertical rods (13) to move downwards, the two vertical rods (13) are respectively located on the front side and the rear side of the valve (2), when the transverse plate (39) moves downwards to be in contact with the two conductive blocks, the second electromagnet (35) is powered on, when the second electromagnet (35) is powered on, a repulsive force effect is generated on the limiting block (33), the limiting block (33) moves upwards, and the limiting block (33) enters the rectangular groove (31);
at the moment, the sleeve (30) is fixed with the rotating rod (7), and under the speed reducing action of the speed reducer (29), the rotating speed of the disc (17) is relatively slow, so that the transverse plate (39) is driven to rotate slowly, the two vertical rods (13) are driven to rotate, the two vertical rods (13) drive the switch of the valve (2) to rotate, and the valve (2) is closed.
2. A gas leak monitoring device according to claim 1, characterized in that: the utility model discloses a methane adsorption device, including rotor (7) and air suction chamber (8), the outer wall of rotor (7) is equipped with a plurality of flabellums (9) along its axial, two air intakes (6) have been seted up at the interior top in air suction chamber (8), the right side of installation piece (1) is installed and is collected box (12), be equipped with the otter board in collection box (12), the methane adsorbent has been placed to the top of otter board, the right side space in air suction chamber (8) and the headspace of collecting box (12) pass through the nozzle stub intercommunication, the bottom space of collecting box (12) communicates through the venthole with the external world.
3. A gas leak monitoring device according to claim 1, characterized in that: audible and visual alarm (38) are installed to the upper end of installation piece (1), piston (21) have electric conductivity, be equipped with on the left and right sides inner wall of erecting chamber (20) with piston (21) matched with second conducting strip (37), the check valve on intake pipe (19) is one-way solenoid valve.
4. A gas leak monitoring device according to claim 1, characterized in that: and a touch delay switch (36) is arranged on the left side of the mounting block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210024100.2A CN114067538B (en) | 2022-01-11 | 2022-01-11 | Gas leakage monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210024100.2A CN114067538B (en) | 2022-01-11 | 2022-01-11 | Gas leakage monitoring device |
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| CN114067538A CN114067538A (en) | 2022-02-18 |
| CN114067538B true CN114067538B (en) | 2022-03-25 |
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| JP2005115848A (en) * | 2003-10-10 | 2005-04-28 | Atsumi Electric Co Ltd | Security status setting device |
| CN206833681U (en) * | 2017-06-22 | 2018-01-02 | 浙江恒洲电子实业有限公司 | A kind of gas leakage audible-visual annunciator |
| CN207993209U (en) * | 2018-01-31 | 2018-10-19 | 金之光 | A kind of city gas safety monitoring device |
| CN113433169A (en) * | 2021-06-23 | 2021-09-24 | 广州研测安全技术有限公司 | Combustible gas safety on-line transmission monitoring devices based on thing networking |
| CN113701064B (en) * | 2021-10-28 | 2022-06-07 | 南通中油燃气有限责任公司 | Intelligent gas leakage monitoring system |
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