CN116296639B - Gas leakage detection device - Google Patents
Gas leakage detection device Download PDFInfo
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- CN116296639B CN116296639B CN202310584137.5A CN202310584137A CN116296639B CN 116296639 B CN116296639 B CN 116296639B CN 202310584137 A CN202310584137 A CN 202310584137A CN 116296639 B CN116296639 B CN 116296639B
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- gear
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- cover plate
- inner shell
- sealing cover
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000005192 partition Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 230000003111 delayed effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 65
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 239000002737 fuel gas Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
- H05K7/20418—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing the radiating structures being additional and fastened onto the housing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Immunology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a gas leakage detection device, which comprises an outer shell fixed on a base, wherein an annular closed cavity is formed in the outer shell through a sealing cover plate at the top and the base at the bottom, an inner shell is fixed in the outer shell, a plurality of gas sensors are annularly distributed on the outer wall of the inner shell, and each gas sensor is radially arranged along the inner shell; through holes are formed in the outer shell body at positions corresponding to the gas sensors, a transition pipe is connected to the outside of each through hole, a connecting hose is connected to the outer side end of each transition pipe, and an air inlet pipe at the tail end of each connecting hose is arranged at the joint of the gas pipeline in a time of working. According to the invention, a channel is directly established between a place where fuel gas is likely to leak and the fuel gas sensor through the connecting hose, and the fan blades in the transition pipe rotate, so that negative pressure is formed in the connecting hose, and the leaked fuel gas can rapidly enter the outer shell under the action of the negative pressure, so that the sensitivity of the detection device can be effectively improved.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a gas leakage detection device.
Background
The gas leakage is mainly due to poor sealing performance of the pipeline connection part, or the sealing element is seriously lost after the pipeline is long in time, so that special equipment is needed to detect the sealing performance of the pipeline before the gas conveying engineering is put into use after the construction is finished, and after the pipeline is normally put into operation, personnel are needed to detect the sealing performance of the pipeline regularly, so that gas leakage is prevented, the gas leakage detection is mainly in two modes, the first mode is that the personnel hold the detector one by one to detect the pipeline connection part, the second mode is more troublesome because the mode is more adopted, namely, the detector is fixed at a position closer to the pipeline connection part, and when the detector detects the gas leakage, an alarm is triggered to work even if the personnel are informed. However, as the connection parts of the detector and each pipeline are spaced a certain distance, the gas has nondirectionality along with the flow of air, that is, leaked gas cannot enter the detector, and only when the leaked gas is more, the detector can detect the leaked gas, so that the sensitivity of the detector to gas detection is low. The present invention has been made in view of this.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a gas leakage detection device.
In order to achieve the above purpose, the present invention provides the following technical solutions: the gas leakage detection device comprises a base and an outer shell body fixed on the base, wherein an annular closed cavity is formed in the outer shell body through a sealing cover plate at the top and the base at the bottom, an inner shell body is fixed in the outer shell body, a plurality of gas sensors are annularly distributed on the outer wall of the inner shell body, and each gas sensor is radially arranged along the inner shell body;
the outer shell is provided with through holes corresponding to the positions of the gas sensors, the outside of each through hole is connected with a transition pipe, the outer end of each transition pipe is connected with a connecting hose, and an air inlet pipe at the tail end of each connecting hose is arranged at the joint of the gas pipeline in a time of working;
the inside of the transition pipe is provided with fan blades in a rotating way along the axial direction of the transition pipe, and negative pressure is formed inside the connecting hose through the rotation of the fan blades, so that external air flow enters the inner shell through the connecting hose to be in contact with the gas sensor.
Preferably, each transition pipe is partially divided into two sections from the middle, the circumferential surface of each section of transition pipe is respectively fixed with a vertical fixing plate, and the two vertical fixing plates are connected through a connecting rod;
a first gear is arranged between the two sections of transition pipes, two annular T-shaped sliding blocks are connected to the circumferential surface of the inner side of the first gear, sliding grooves matched with the T-shaped sliding blocks are formed in the transition pipes, the first gear is used for connecting the two sections of transition pipes together through the matching of the T-shaped sliding blocks on the inner sides of the first gear and the sliding grooves on the transition pipes, and the first gear rotates relative to the transition pipes;
the circumference surface of the inner side of the first gear is also integrally provided with a ring plate, two sides of the ring plate are respectively fixedly connected with mounting rods, and the fan blades are fixed at the axle center of the transition pipe through the two mounting rods;
and a second gear meshed with the first gear is further rotatably arranged between the tops of the two vertical fixing plates, and the fan blades are driven to rotate by driving the second gear, so that negative pressure is formed inside the connecting hose.
Preferably, a motor is fixed at the inner center of the inner shell, a motor shaft of the motor sequentially penetrates through an upper cover of the inner shell and a sealing cover plate of the inner shell upwards and then extends to the outer part of the outer shell, a large bevel gear is connected with the motor shaft, a central shaft is fixedly connected to the center of each second gear towards the center of the outer shell, a supporting seat for supporting each central shaft is further fixed at the position of the upper end face of the sealing cover plate, corresponding to the central shaft, and a small bevel gear meshed with the large bevel gear is fixedly sleeved at the tail end of the central shaft after the central shaft penetrates through the corresponding supporting seat.
Preferably, a heat conduction cylinder is arranged in the inner shell, the heat conduction cylinder is sleeved on the surface of the motor, and an annular space is formed between the heat conduction cylinder and the inner shell;
the outer wall of the inner shell is also provided with a groove-shaped gas inlet along the vertical direction, the inside of the inner shell is communicated with the inside of the outer shell through the gas inlet, a plurality of gas outlets are distributed in the area of the bottom of the inner shell corresponding to the annular space, and the bottom of the base is provided with a through hole communicated with the gas outlets.
Preferably, the upper cover is rotationally provided with a T-shaped rotating ring, the bottom of the T-shaped rotating ring is downwards extended into the annular space and then fixedly connected with a plurality of clapboards with the same specification, each clapboard is arranged towards the center of the inner shell, the height of each clapboard is consistent with the height of the inner cavity of the inner shell, the annular space is separated by all the clapboards to form an independent and non-communicated arc-shaped space, each arc-shaped space is internally filled with radiating fins, and the back of each radiating fin is attached to the heat conducting tube.
Preferably, the sealing cover plate at the top of the outer shell comprises a first sealing cover plate and a second sealing cover plate;
the top of the upper cover is embedded into the inner side of the first sealing cover plate;
the second seal cover plate is fixed at the top of the first seal cover plate, the supporting seat is fixed on the first seal cover plate, the large bevel gear is rotatably arranged on the second seal cover plate, and a circular groove with the same diameter as the T-shaped rotating ring is formed at the bottom of the second seal cover plate.
Preferably, a sector gear is fixedly sleeved on a motor shaft of the motor and is positioned above the upper cover;
the top of the T-shaped rotating ring penetrates through the outer part of the upper cover and then extends into the circular groove at the bottom of the second sealing cover plate, the upper end face of the upper cover is further rotatably provided with a third gear meshed with the sector gear, the third gear is also arranged in the circular groove at the bottom of the second sealing cover plate, the diameter of the third gear is larger than that of the sector gear, and meshing teeth meshed with the third gear are distributed on the inner side of the top of the T-shaped rotating ring.
Compared with the prior art, the invention provides a gas leakage detection device, which has the following beneficial effects:
(1) The invention is provided with a plurality of groups of gas sensors, the connecting hose corresponding to each group of gas sensors is directly placed at the joint of the gas pipeline, thus the leakage detection of a plurality of places can be realized at one time, the manual leakage detection of personnel is avoided one by one, the connecting hose directly establishes a channel with the gas sensors at the places where the gas is likely to leak, and the fan blades in the transition pipe rotate, so that the negative pressure is formed in the connecting hose, and the leaked gas can rapidly enter the shell under the action of the negative pressure, thereby effectively improving the sensitivity of the detection device.
(2) The fan blades inside each transition pipe can be driven to rotate through a motor, the motor drives the large bevel gear to rotate, and the four small bevel gears are synchronously meshed with the large bevel gear, so that all the fan blades can be driven to rotate, the sensitivity of the detection device can be improved, and the production and maintenance cost of the device can be reduced to the greatest extent.
(3) The fan-shaped gear is meshed with the third gear intermittently when the fan blades are driven to rotate by high-speed rotation of the motor, air flows enter the inner shell through the air inlet, the heat-radiating fins slowly and intermittently rotate and slide relative to the heat-conducting tube, heat on the heat-conducting tube can be conducted to the heat-radiating fins, and different positions of the air flows and the heat-radiating fins are contacted to take away the heat.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the invention and do not constitute a limitation to the invention, and in which:
FIG. 1 is a schematic structural diagram of an entire detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the connection of a connection hose and a transition pipe according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating various structures distributed inside a first gear according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an assembly of a first gear on a transition pipe according to an embodiment of the present invention;
FIG. 5 is a schematic view illustrating the installation of two gears on a transition pipe according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a partial structure of an entire detection apparatus according to an embodiment of the present invention;
fig. 7 is a schematic view of an internal structure of an outer casing according to an embodiment of the present invention;
FIG. 8 is a schematic view of an inner housing according to an embodiment of the present invention;
fig. 9 is a schematic view of an inner structure of an inner housing according to an embodiment of the present invention, wherein no heat dissipation fins are included in the inner housing;
fig. 10 is a schematic view of an inner structure of an inner housing according to an embodiment of the present invention, in which heat dissipation fins are installed in a filling manner;
FIG. 11 is a schematic three-dimensional cross-sectional view of an inner housing according to an embodiment of the present invention;
FIG. 12 is a schematic view showing the distribution of the partition plate on the T-shaped rotating ring according to the embodiment of the present invention;
fig. 13 is a schematic structural diagram of a heat sink fin according to an embodiment of the present invention.
In the figure: 1. a base; 2. an outer housing; 3. a first sealing cover plate; 4. a support base; 5. a connecting hose; 6. a magic tape; 7. an air inlet pipe; 8. a transition pipe; 9. a first gear; 10. a T-shaped slider; 11. a ring plate; 12. a mounting rod; 13. a fan blade; 14. a vertical fixing plate; 15. a connecting rod; 16. a second gear; 17. a central shaft; 18. bevel pinion; 19. a large bevel gear; 20. a second sealing cover plate; 21. an inner housing; 22. a gas sensor; 23. a gas inlet; 24. an upper cover; 25. a sector gear; 26. a third gear; 27. a T-shaped rotating ring; 28. a heat conduction tube; 29. a motor; 30. a heat radiation fin; 31. a gas outlet; 32. a partition board.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
As shown in fig. 1 to 13, the present embodiment provides a gas leakage detecting device, which is mainly used for detecting the tightness of a gas pipeline connection position, and includes an outer casing 2 fixed on a base 1, wherein an annular closed cavity is formed inside the outer casing 2 by a sealing cover plate at the top and the base 1 at the bottom. The inside of the outer shell 2 is fixed with an inner shell 21, four gas sensors 22 are distributed on the outer wall of the inner shell 21 at equal intervals in an annular mode, each gas sensor 22 is arranged along the radial direction of the inner shell 21, through holes are formed in positions, corresponding to each gas sensor 22, of the outer shell 2, when gas leaks, the gas enters the outer shell 2 through the through holes to be in contact with the gas sensors 22, the gas sensors 22 convert the gas into electric signals after detecting the gas and send the electric signals to an alarm, and the alarm works timely to inform personnel (the alarm is not shown in the figure, and the gas sensors 22, a controller and the circuit control of the alarm adopt the mature technology in the art, and because the gas sensors are not the key points required to be protected by the invention, the gas sensors are not repeated). In order to improve the detection sensitivity of the whole device, the invention is also provided with a transition pipe 8 connected to the outside of each through hole, the outer side end of the transition pipe 8 is connected with a connecting hose 5, a plurality of velcro strips 6 are uniformly connected to the connecting hose 5, after the detection device is fixed on a working place, the connecting hose 5 is firstly fixed on a gas conveying pipeline through the velcro strips 6, and the air inlet pipe 7 at the tail end of the connecting hose 5 is ensured to be exactly arranged at the joint of the gas pipeline, when gas leaks, the leaked gas can enter the outer shell 2 through the connecting hose 5.
Furthermore, in order to ensure that more fuel gas enters the connecting hose 5 from the air inlet pipe 7, the fan blades 13 are rotatably arranged in each transition pipe 8, and when the detection device is in a working state, the fan blades 13 in each transition pipe 8 are always in a rotating state, the fan blades 13 rotate to enable air flow to enter the outer shell 2, and negative pressure is formed in the connecting hose 5, so that fuel gas leaked from a pipeline joint can rapidly enter the outer shell 2 under the action of the negative pressure, and the sensitivity of the detection device can be effectively improved.
In the above scheme, each transition pipe 8 is partially divided into two sections from the transition pipe, a first gear 9 is arranged between the two sections, two annular T-shaped sliding blocks 10 are connected to the circumferential surface of the inner side of the first gear 9, sliding grooves matched with the T-shaped sliding blocks 10 are formed in the transition pipe 8, the first gear 9 connects the two sections of the transition pipes 8 together through the matching of the T-shaped sliding blocks 10 on the inner side of the first gear and the sliding grooves on the transition pipes 8, the first gear 9 rotates relative to the transition pipes 8, a ring plate 11 is integrally formed on the circumferential surface of the inner side of the first gear 9, two mounting rods 12 are fixedly connected to the two sides of the ring plate 11 respectively, the two mounting rods 12 are distributed in a cross shape, and fan blades 13 are fixed at the axle center of the transition pipes 8 through the two mounting rods 12. In order to fix the two sections of transition pipes 8 with each other, vertical fixing plates 14 are respectively fixed on the circumferential surface of each section of transition pipe 8, and the two vertical fixing plates 14 are connected through a connecting rod 15, so that the transition pipes 8 can be fixed, the first gear 9 can smoothly and stably rotate relative to the transition pipes 8, a second gear 16 meshed with the first gear 9 is further rotatably arranged between the tops of the two vertical fixing plates 14, and the fan blades 13 can be driven to rotate by driving the second gear 16 to rotate, so that negative pressure is formed inside the connecting hose 5.
The motor 29 is fixed at the center of the inner shell 21, the motor shaft of the motor 29 sequentially passes through the upper cover 24 and the sealing cover plate upwards and extends to the outside of the outer shell 2, then the large bevel gear 19 is connected, the center of each second gear 16 is fixedly connected with the central shaft 17 towards the center of the outer shell 2, the supporting seat 4 is also fixed at the position of the upper end face of the sealing cover plate corresponding to each central shaft 17 for supporting the central shaft, the small bevel gear 18 meshed with the large bevel gear 19 is fixedly sleeved at the tail end of the central shaft 17 after passing through the corresponding supporting seat 4, the large bevel gear 19 is driven to rotate by one motor 29, and the four small bevel gears 18 are synchronously meshed with the large bevel gear 19, so that all fan blades 13 can be driven to rotate, the sensitivity of the detection device can be improved, and the production and maintenance cost of the device can be reduced to the greatest extent.
Because the whole detection device is in the operating condition, the motor 29 always drives the large bevel gear 19 to rotate, and the long-time rotation of the motor 29 can generate heat, but the motor 29 is fixed in the inner shell 21, and if the heat generated by the motor 29 can not be effectively dissipated and released, the normal operation and the service life of the motor 29 can be influenced. In view of this, the invention sets up a heat conduction tube 28 in the inside of the inner casing 21, and this heat conduction tube 28 is covered on the surface of the electrical machinery 29, and form the annular space between heat conduction tube 28 and inner casing 21, can transfer heat to the heat conduction tube 28 after the electrical machinery 29 works and produces the heat, there is a gas inlet 23 on the outer wall of the inner casing 21 along the vertical direction, the gas inlet 23 can make the inside of inner casing 21 communicate with inside of outer casing 2, the air current that produces when the flabellum 13 rotates enters into the inside of outer casing 2 at first, after the gas sensor 22 finishes detecting the gas, the air current enters into the annular space in the inside of inner casing 21 through the gas inlet 23, the air current in the annular space contacts and can take away the heat on its surface, finally is discharged from the gas outlet 31 in the bottom of the inner casing 21, of course, the invention has offered the through hole communicating with gas outlet 31 in the bottom of the base 1 too, the air current is discharged to the outside of the base 1 through this through hole, thus finish cooling the electrical machinery 29 by means of flowing gas.
In order to further improve the cooling effect of the motor 29, the invention further provides that the T-shaped rotating ring 27 is rotatably arranged on the upper cover 24, six partition plates 32 with the same specification are fixedly connected after the bottom of the T-shaped rotating ring 27 extends downwards to the inside of the annular space, the six partition plates 32 are distributed in an annular equidistant manner, each partition plate 32 is arranged towards the center of the inner shell 21, the heights of the six partition plates 32 are consistent with the height of the inner cavity of the inner shell 21, the annular space is separated by all the partition plates 32 to form independent and non-communicated arc-shaped spaces, each arc-shaped space is filled with the radiating fins 30, the radiating fins 30 are in contact with the heat conducting tube 28, and the heat on the heat conducting tube 28 can be radiated. However, since the air inlet 23 is in a vertically arranged groove strip shape and the heat dissipating fins 30 are shown in fig. 13, if the heat on the heat dissipating fins 30 is to be taken away by the air flow in time, the partition plate 32 needs to be rotated to push the heat dissipating fins 30 to rotate, and the air flow is continuously contacted with the heat dissipating fins 30 in a rotating state after entering the inner shell 21 through the air inlet 23, so that the heat on the heat dissipating fins 30 is taken away. However, since the heat dissipation fins 30 are always in a fitting state with the heat conduction tube 28, the relative sliding of the two parts cannot be too fast, and heat is generated due to friction, the motor shaft of the motor 29 is fixedly sleeved with the sector gear 25, the sector gear 25 is positioned at the top of the upper cover 24, and it is to be noted that, since the top of the T-shaped rotating ring 27 penetrates through the outer part of the upper cover 24, the sealing cover plate at the top of the outer shell 2 is provided with a first sealing cover plate 3 and a second sealing cover plate 20, wherein the first sealing cover plate 3 is in a ring structure, the top of the upper cover 24 is just embedded inside the first sealing cover plate 3, the second sealing cover plate 20 is fixed at the top of the first sealing cover plate 3, the supporting seat 4 in the scheme is fixed on the first sealing cover plate 3, and the large bevel gear 19 is rotatably arranged on the second sealing cover plate 20. And the bottom of the second sealing cover plate 20 is formed with a circular groove having a diameter identical to that of the T-shaped rotating ring 27 and a depth larger than that of the third gear 26, the third gear 26 is rotatably installed on the upper end surface of the upper cover 24 and is engaged with the sector gear 25, and the inner side of the T-shaped rotating ring 27 is distributed with engaging teeth engaged with the third gear 26. When the motor 29 rotates at a high speed to drive the fan blade 13 to rotate, the sector gear 25 is intermittently meshed with the third gear 26, and the third gear 26 has a larger diameter than the sector gear 25, so that the heat dissipation fins 30 are driven to slowly and intermittently rotate and slide relative to the heat conduction barrel 28, heat on the heat conduction barrel 28 can be conducted to the heat dissipation fins 30, and air flow can be brought into contact with different positions of the heat dissipation fins 30 to take away the heat.
In the description of the present invention, the terms "first," "second," "another," "yet another" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a gas leakage detection device, is including base (1) and shell body (2) of fixing on base (1), and the inside of shell body (2) forms annular airtight cavity through sealed apron at top and base (1) of bottom, its characterized in that: an inner shell (21) is fixed in the outer shell (2), a plurality of gas sensors (22) are annularly distributed on the outer wall of the inner shell (21), and each gas sensor (22) is radially arranged along the inner shell (21);
the position of the outer shell body (2) corresponding to each gas sensor (22) is provided with a through hole, the outside of each through hole is connected with a transition pipe (8), the outer side end of each transition pipe (8) is connected with a connecting hose (5), and an air inlet pipe (7) at the tail end of each connecting hose (5) is arranged at the connecting position of a gas pipeline in a delayed mode during operation;
the inside of the transition pipe (8) is rotatably provided with a fan blade (13) along the axial direction thereof, and negative pressure is formed in the connecting hose (5) through the rotation of the fan blade (13), so that external air flow enters the inner shell (21) through the connecting hose (5) to be in contact with the gas sensor (22);
each transition pipe (8) is partially formed into two sections from the middle, vertical fixing plates (14) are respectively fixed on the circumferential surface of each section of transition pipe (8), and the two vertical fixing plates (14) are connected through a connecting rod (15);
a first gear (9) is arranged between the two sections of transition pipes (8), two annular T-shaped sliding blocks (10) are connected to the circumferential surface of the inner side of the first gear (9), sliding grooves matched with the T-shaped sliding blocks (10) are formed in the transition pipes (8), the first gear (9) is used for connecting the two sections of transition pipes (8) together through the matching of the T-shaped sliding blocks (10) on the inner side of the first gear and the sliding grooves on the transition pipes (8), and the first gear (9) rotates relative to the transition pipes (8);
a ring plate (11) is integrally formed on the circumferential surface of the inner side of the first gear (9), two sides of the ring plate (11) are respectively and fixedly connected with mounting rods (12), and the fan blades (13) are fixed at the axle center of the transition pipe (8) through the two mounting rods (12);
a second gear (16) meshed with the first gear (9) is further rotatably arranged between the tops of the two vertical fixing plates (14), and the fan blades (13) are driven to rotate by driving the second gear (16), so that negative pressure is formed inside the connecting hose (5).
2. The gas leakage detecting device according to claim 1, wherein: the motor (29) is fixed in the inside center department of inner shell (21), the motor shaft of motor (29) upwards passes behind upper cover (24) of inner shell (21) and the sealed apron of inner shell (21) in proper order and extends to be connected with big bevel gear (19) behind outer shell (2) outside, the center department of every second gear (16) all fixedly connected with center pin (17) towards the center department of outer shell (2), and the up end department that corresponds every center pin (17) of sealed apron still is fixed with supporting seat (4) to it, little bevel gear (18) with big bevel gear (19) meshing have been cup jointed in its end fixed after center pin (17) pass corresponding supporting seat (4).
3. A gas leakage detection apparatus according to claim 2, wherein: a heat conducting tube (28) is arranged in the inner shell (21), the heat conducting tube (28) is sleeved on the surface of the motor (29), and an annular space is formed between the heat conducting tube (28) and the inner shell (21);
the outer wall of the inner shell (21) is also provided with a groove-shaped gas inlet (23) along the vertical direction, the inner part of the inner shell (21) is communicated with the inner part of the outer shell (2) through the gas inlet (23), a plurality of gas outlets (31) are distributed in the area of the bottom of the inner shell (21) corresponding to the annular space, and the bottom of the base (1) is provided with a through hole communicated with the gas outlets (31).
4. A gas leakage detection apparatus according to claim 3, wherein: the upper cover (24) is rotationally provided with a T-shaped rotating ring (27), the bottom of the T-shaped rotating ring (27) downwards extends into the annular space and then is fixedly connected with a plurality of partition boards (32) with the same specification, each partition board (32) is arranged towards the center of the inner shell (21), the height of each partition board (32) is consistent with the height of the inner cavity of the inner shell (21), the annular space is separated by all the partition boards (32) to form an independent and non-communicated arc-shaped space, each arc-shaped space is internally filled with heat dissipation fins (30), and the back of each heat dissipation fin (30) is attached to the heat conduction cylinder (28).
5. A gas leakage detecting device according to any one of claims 2 to 4, wherein: the sealing cover plate at the top of the outer shell (2) comprises a first sealing cover plate (3) and a second sealing cover plate (20);
the first sealing cover plate (3) is of an annular structure, and the top of the upper cover (24) is embedded into the inner side of the first sealing cover plate (3);
the second sealing cover plate (20) is fixed at the top of the first sealing cover plate (3), the supporting seat (4) is fixed on the first sealing cover plate (3), the large bevel gear (19) is rotatably arranged on the second sealing cover plate (20), and a circular groove with the same diameter as the T-shaped rotating ring (27) is formed at the bottom of the second sealing cover plate (20).
6. The gas leakage detecting device according to claim 5, wherein: a sector gear (25) is fixedly sleeved on a motor shaft of the motor (29), and the sector gear (25) is positioned above the upper cover (24);
the top of the T-shaped rotating ring (27) penetrates through the outer part of the upper cover (24) and then extends into a circular groove at the bottom of the second sealing cover plate (20), a third gear (26) meshed with the sector gear (25) is rotatably arranged on the upper end face of the upper cover (24), the third gear (26) is also arranged in the circular groove at the bottom of the second sealing cover plate (20), the diameter of the third gear (26) is larger than that of the sector gear (25), and meshing teeth meshed with the third gear (26) are distributed on the inner side of the top of the T-shaped rotating ring (27).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310584137.5A CN116296639B (en) | 2023-05-23 | 2023-05-23 | Gas leakage detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310584137.5A CN116296639B (en) | 2023-05-23 | 2023-05-23 | Gas leakage detection device |
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| CN116296639B true CN116296639B (en) | 2023-08-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7387012B2 (en) * | 2006-07-14 | 2008-06-17 | Veyance Technologies, Inc. | Leak detection sensor system and method for double carcass hose |
| GB201009042D0 (en) * | 2010-06-01 | 2010-07-14 | Dunlop Oil & Marine Ltd | Leak detector |
| CN111561627A (en) * | 2020-04-02 | 2020-08-21 | 怀化新奥燃气有限公司 | Gas pipeline leakage detection device and use method thereof |
| CN214583903U (en) * | 2021-01-20 | 2021-11-02 | 石家庄新奥能源发展有限公司 | Indoor gas leakage alarm device |
| CN214475464U (en) * | 2021-03-31 | 2021-10-22 | 江苏杰诺尔物联网科技有限公司 | Wisdom gas leaks remote alarm device |
| CN216386931U (en) * | 2021-08-23 | 2022-04-26 | 胡勤 | Combustible gas detector with automatic gas leakage alarm function |
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