CN114999121A - Alarm for combustible gas detection - Google Patents
Alarm for combustible gas detection Download PDFInfo
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- CN114999121A CN114999121A CN202210924717.XA CN202210924717A CN114999121A CN 114999121 A CN114999121 A CN 114999121A CN 202210924717 A CN202210924717 A CN 202210924717A CN 114999121 A CN114999121 A CN 114999121A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N2021/354—Hygrometry of gases
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Health & Medical Sciences (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to an alarm for combustible gas detection. The alarm belongs to the technical field of combustible gas detection alarm products; the alarm comprises a detection tank, wherein an input part, a detection part and an output part are arranged on the detection tank, a first partition plate and a second partition plate are arranged above and below the detection tank, and the first partition plate and the second partition plate divide the interior of the detection tank into a first detection cavity, a second detection cavity and a humidification cavity which are distributed from top to bottom; the invention utilizes the absorption principle of an infrared light source to detect the hydrocarbon combustible gas in the field environment, the gas is not compressed or otherwise processed when the gas is detected, the detection precision is high, when the flammability of the gas is detected by an infrared emitter and an infrared receiver, the gas is dehumidified and dedusted, and the flammability of the dehumidified and dedusted gas is detected again by an infrared combustible gas detection alarm, so that the flammability fluctuation condition of the gas under extreme conditions can be detected.
Description
Technical Field
The invention belongs to the technical field of combustible gas detection alarm products, and particularly relates to an alarm for combustible gas detection.
Background
The existing gas detection alarm applied to industry is usually an infrared combustible gas detection alarm, the infrared combustible gas detection alarm can measure concentration according to the principle that different gases absorb infrared light differently, and is suitable for detecting the gas concentration of various hydrocarbon combination keys.
And the dust content or the water content of the gas generated in the industrial processing process is higher, so that the absorption accuracy of the gas to infrared light is reduced, and the detection precision of the infrared combustible gas detection alarm is reduced.
And as the patent names: in a patent of an industrial combustible gas detection alarm (ZL 201720202387.8), a scheme for improving the detection precision of an infrared combustible gas detection alarm by reducing water vapor, impurity particles and the like contained in air through compression, water removal and dust removal is disclosed, but when the scheme is applied to practice, the following defects exist:
the gas contains a certain amount of water vapor, impurity particles and the like, which can increase the flammability of the gas (for example, water is used for fire extinguishing in the fire extinguishing phenomenon, high-temperature flame can instantaneously evaporate the water vapor, and hydrogen and carbon monoxide can be generated after the carbon and the water react to further achieve the combustion supporting effect, and for example, the phenomenon that the dust explosion is formed because the contact area of common non-combustible or non-combustible substances such as flour and the like with the air is large when the non-combustible or non-combustible substances exist in the air in a dispersed manner).
Therefore, the detection accuracy of the infrared combustible gas detection alarm cannot be improved under the condition that water vapor and particles are flame-retardant after the water vapor and the impurity particles in the gas are removed.
In summary, an alarm for detecting combustible gas is provided to solve the above drawbacks.
Disclosure of Invention
The invention aims to solve the problems and provide an alarm with simple structure and reasonable design, the invention utilizes the absorption principle of an infrared light source to detect the hydrocarbon combustible gas in the field environment, the gas is not compressed or otherwise treated when the gas is detected, the detection precision is high, when the flammability of the gas is detected by an infrared transmitter and an infrared receiver, the gas is subjected to dehumidification and dust removal treatment, and the infrared combustible gas detection alarm is used for detecting the flammability of the dehumidified and dust removed gas again, so that the flammability fluctuation condition of the gas under extreme conditions can be detected.
The invention realizes the purpose through the following technical scheme:
an alarm for combustible gas detection comprises a detection tank, wherein an input part, a detection part and an output part are arranged on the detection tank, a first partition plate and a second partition plate are arranged above and below the detection tank, and the first partition plate and the second partition plate divide the interior of the detection tank into a first detection cavity, a second detection cavity and a humidification cavity which are distributed from top to bottom;
the input part comprises a suction fan and an air suction pipeline, the lower end of the suction fan is communicated with the interior of the first detection cavity, one side of the suction fan is provided with the air suction pipeline communicated with the exterior of the detection tank, and the air suction pipeline is arranged on one side of the detection tank along the height direction of the detection tank;
the detection part comprises a front detection mechanism and a rear detection mechanism, the front detection mechanism comprises an infrared emitter and an infrared receiver, the infrared emitter and the infrared receiver are arranged oppositely, the infrared emitter and the infrared receiver are both fixedly mounted on the upper surface of the first partition plate, the infrared emitter and the infrared receiver are both arranged inside the first detection cavity, the rear detection mechanism comprises an infrared combustible gas detection alarm, the infrared combustible gas detection alarm is fixed on the upper surface of the second partition plate, and the infrared combustible gas detection alarm is arranged inside the second detection cavity;
the output part comprises an output fan, the output fan is fixedly mounted on the upper surface of the second partition plate, the output fan is located inside the second detection cavity, an air suction pipe and a sinking exhaust pipeline are arranged on the output fan, the air suction pipe is communicated with the inside of the second detection cavity, the sinking exhaust pipeline penetrates through the second partition plate and is communicated with the inside of the lower end of the humidification cavity, a blow-off pipe is arranged at the lower end of the humidification cavity, and a gas discharge pipe II is arranged on one side of the upper end of the humidification cavity.
As a further optimization scheme of the invention, an inlet pipeline is arranged in the middle of the first partition plate, a first shell is fixedly arranged on the lower surface of the first partition plate, a second shell is fixedly arranged between the lower end of the first shell and the inner wall of the detection tank, a purification cavity is formed among the second shell, the first shell and the inner wall of the detection tank, the upper end of the inlet pipeline is communicated with the interior of the first detection cavity, the lower end of the inlet pipeline is communicated with the interior of the first shell, a discharge groove communicated with the interior of the second detection cavity is arranged on one side of the first shell, and a purification mechanism used for dehumidifying and dedusting gas passing through the first shell is arranged at the lower end position of the first shell.
The invention utilizes the absorption principle of an infrared light source to detect the hydrocarbon combustible gas in the field environment, the gas is not compressed or otherwise processed when the gas is detected, the detection precision is high, when the flammability of the gas is detected by an infrared emitter and an infrared receiver, the gas is dehumidified and dedusted, and the flammability of the dehumidified and dedusted gas is detected again by an infrared combustible gas detection alarm, so that the flammability fluctuation condition of the gas under extreme conditions can be detected.
The alarm is particularly suitable for detecting combustible gas in industry, dust and moisture in an industrial production workshop are easy to increase, especially, the dust and the moisture are nearby a space range, and the dust and the moisture in other ranges are relatively low, so that the dust and the moisture in the gas are subjected to bipolarization, and the flammability of the gas is deviated when the dust and the moisture in the gas are different, therefore, the flammability of the gas in a natural state is firstly measured in the alarm, and then the gas is dehumidified and dedusted to measure the flammability of the gas again, so that the phenomenon that explosion accidents and combustion accidents are easy to occur due to bipolarization of the dust and the moisture in the gas in the same industrial workshop is avoided.
The during operation, the suction fan starts, it is first in the detection chamber one that the outside gas of detection jar passes through the pipeline of breathing in at first to get into, the gaseous process infrared emitter and the infrared receiver that get into in the detection chamber one detect once, and gaseous entering pipeline can be by impurity such as filtration cotton piece filtering moisture and dust after getting into casing one, the purpose of gaseous purification has been accomplished, the gaseous storage in discharge groove entering detection chamber two of purifying back, the infrared combustible gas detection alarm in the detection chamber two carries out the secondary to gaseous flammability and detects.
The gas is detected for the second time and then the humidity in the gas is monitored through the monitoring unit, when the humidity in the gas is normal, the gas is directly discharged through the first gas discharge pipe, when the humidity in the gas is low, the gas can be conveyed to the lower end of the humidification cavity through the gas suction pipe and the sinking exhaust pipeline in sequence through the output fan, water is stored in the humidification cavity, and the gas is conveyed to the bottom of the water, is humidified and then is discharged from the upper end of the second gas discharge pipe.
As a further optimization scheme of the invention, the purification mechanism comprises a filter cotton block, a transmission shaft, a driving unit and a supporting roller, a motor protective shell for installing the driving unit is arranged on one side of the second detection cavity, one side of the motor protective shell facing the outside of the detection tank is provided with an opening, a sealing plate is fixed at the opening position through a screw, the transmission shaft is connected with the end part of the driving unit in a transmission way and movably extends into the purification cavity, the supporting roller is fixedly connected with the outer ring of the transmission shaft, four groups of filtering cotton blocks are arranged, the four groups of filtering cotton blocks are fixed at the outer ring of the supporting roller in a circular array shape, one group of filtering cotton blocks at the upper end of the supporting roller enter the first shell from the opening at the lower end of the first shell, and a group of filter cotton blocks entering the first interior of the shell are blocked at one side of the discharge groove, and the filter cotton blocks purify the gas flowing to the discharge groove from the shell.
The driving unit can use a servo motor and other devices, the driving unit drives the supporting roll to rotate through the transmission shaft, the supporting roll is fixedly connected with the filtering cotton blocks, therefore, the filtering cotton blocks rotate synchronously along with the supporting roll, and when the filtering cotton blocks rotate to block at one side of the discharge groove, the filtering treatment is carried out on gas flowing to the discharge groove through the shell.
As a further optimization scheme of the invention, a blocking plate is fixedly arranged in the first shell, the blocking plate divides the first shell into an upper chamber and a lower chamber which are distributed up and down, a communication hole is formed in the blocking plate, the upper parts of a group of filtering cotton blocks at the upper end of the supporting roll are hermetically attached to the lower end of the communication hole, a guide column is fixedly welded on the upper surface of the blocking plate, a first magnetic plate is slidably arranged on the guide column and corresponds to the upper part of the communication hole, a limiting nut is connected to the upper end of the guide column in a threaded fit manner and blocks the upper part of the first magnetic plate, a second magnetic plate is fixedly arranged in one end, away from the supporting roll, of the filtering cotton block, and the second magnetic plate and the first magnetic plate are separated from each other in a repelling manner.
In order to avoid the phenomenon that the discharge groove is directly exposed when the filter cotton block rotates to discharge gas without purification, a first magnetic plate is arranged at the upper end of the blocking plate, when the filter cotton block rotates to the position below the corresponding communication hole, the corresponding second magnetic plate and the first magnetic plate are repelled and kept away from each other, so that the first magnetic plate slides upwards along the guide column, at the moment, gas in the upper chamber can enter the lower chamber through the opening between the lower surface of the first magnetic plate and the position above the communication hole, and when the filter cotton block rotates to leave from the position below the communication hole, the first magnetic plate loses the repulsive effect of the second magnetic plate and is attached to the upper end of the communication hole, and the gas is prevented from continuously entering the lower chamber.
As a further optimization scheme of the invention, the lower end of the lower cavity is provided with an opening and closing assembly, the opening and closing assembly comprises a one-way rotating plate, one end of the one-way rotating plate is movably hinged on a first shell through a hinge shaft, the other end of the one-way rotating plate is fixedly provided with a rubber strip, the rubber strip is movably attached to the outer ring of the supporting roller, a limiting assembly is arranged on the first shell at a position close to the hinge shaft, the limiting assembly comprises a first limiting plate, a second limiting plate and a second spring, the first limiting plate and the second limiting plate are integrally arranged, the second spring is fixedly connected between the surface of the second limiting plate and the one-way rotating plate, the first limiting plate is integrally welded on the first shell, the two sides of the supporting roller are respectively provided with the one-way rotating plate, the first limiting plate is provided with two groups corresponding to the two groups of one-way rotating plates, and one group of the first limiting plate is movably attached to the upper surface of the one-way rotating plate, the other group of first limiting plates are movably attached to the lower surface of the one-way rotating plate.
Wherein, the subassembly that opens and shuts has played the purpose of keeping apart lower cavity and purification chamber, be used for purifying gas when filtering cotton piece and being located a casing inside, when filtering cotton piece and being located the purification intracavity portion, the air heater starts, the hot-blast cotton piece that can pass through of air heater production, take away the dust and the moisture on filtering cotton piece surface and discharge from hot-blast exit hole department, make the rotation of four groups of filtering cotton pieces of drive unit drive when casing inside switches, the filtering cotton piece that is located a casing inside can keep good aridity, be convenient for the better moisture in the absorbed gas.
As a further optimization scheme of the invention, the lower end of the shell II is provided with a drain pipe, the drain pipe penetrates through the lower end of the detection cavity II and is communicated between the purification cavity and the humidification cavity, the side surface of the detection tank is fixedly provided with a hot air blower, the hot air blower is communicated with the interior of the purification cavity through a hot air pipe, and one side of the upper end of the purification cavity is provided with a hot air outlet communicated with the exterior of the detection tank.
When the moisture in the filtering cotton block filtering gas is too much, water drops can be generated, the water drops flow into the humidifying cavity through the drain pipe for storage, so that the water in the humidifying cavity is supplemented, the lower end of the detection tank is provided with a blow-off pipe communicated with the lower end of the humidifying cavity, and the water in the humidifying cavity is conveniently drained.
As a further optimization scheme of the invention, a combustion box is fixedly mounted on the inner wall of the humidification cavity, a combustion box air inlet pipeline communicated with the interior of the combustion box is arranged on one side of the lower end of the sinking exhaust pipeline, an oxygen tank is arranged on one side of the detection tank and communicated with the interior of the combustion box through an oxygen supply pipeline, an ignition head corresponding to one side of the oxygen supply pipeline is mounted on the inner wall of the combustion box, a gas discharge pipe III communicated with the exterior of the detection tank is arranged on one side of the combustion box, and a gas discharge pipe II is arranged on one side of the upper end of the humidification cavity.
Furthermore, if the combustibility of the gas is high, the gas can be led into the combustion box through the combustion box air inlet pipeline on one side of the lower end of the sunken exhaust pipeline, the gas can be combusted in a small range in the combustion box after being ignited by the ignition head, the combusted gas is discharged through the gas discharge pipe III, the combustibility of the gas after being combusted is reduced, and the risk of high combustibility of the gas can be reduced after the gas is discharged again.
The oxygen supply pipeline on the oxygen tank can supply oxygen to the combustion box, so that the concentration of the oxygen in the combustion box can be adjusted conveniently according to the flammability of the gas, the combustible gas can be combusted fully conveniently, and the combustion box uses an explosion-proof box body.
As a further optimization scheme of the invention, the second gas discharge pipe is of an L-shaped structure, and a water filling port is arranged in the middle of the second gas discharge pipe and is lower than an opening at the upper end of the second gas discharge pipe.
And a water adding port on the second gas discharge pipe can be used for adding water into the humidifying cavity.
As a further optimization scheme of the invention, a first gas discharge pipe is arranged on one side of the lower end of the second detection cavity, the first gas discharge pipe is communicated with the outside of the detection tank, and a monitoring unit for monitoring the humidity of gas in the second detection cavity is arranged on the inner wall of the second detection cavity.
The monitoring unit may use a humidity sensor or the like.
As a further optimization scheme of the invention, the air suction pipeline is provided with a plurality of groups of air holes which are penetrated through from inside to outside, the air holes are distributed at equal intervals, one side of each air hole is provided with a stainless steel sealing block, the stainless steel sealing blocks are fixedly connected onto the wall body of the air suction pipeline through a spring I, the upper surface of the detection tank is fixedly connected with a base plate through a screw, the lower end of the base plate is provided with a pushing unit, the pushing units are distributed along the height direction of the air suction pipeline, the lower end of the pushing unit is provided with a magnetic suction block, and the magnetic suction block and the stainless steel sealing block are attracted with each other.
Further, when the pushing unit pushes the magnetic attraction block to descend to different height positions, the magnetic attraction block can suck the stainless steel sealing block at the corresponding position out of the air hole, so that external gas enters the air suction pipeline through the air hole, when the air hole at the different height positions is controlled to be opened, the flammability of the gas at the different height positions in the environment can be conveniently detected, and the pushing unit can use an electric push rod or an air cylinder and other devices.
Wherein, the fixed supporting leg that supports subaerial that is provided with in bottom of detecting the jar, the combustion box sets up in the bottom of humidifying the chamber, and the temperature of combustion box is reduced to the water that can humidify the chamber bottom to avoid the dangerous condition that the combustion box high temperature appears.
The invention has the beneficial effects that: the invention utilizes the absorption principle of an infrared light source to detect the hydrocarbon combustible gas in the field environment, the gas is not compressed and processed by other processes when the gas is detected, the detection precision is high, when the flammability of the gas is detected by an infrared emitter and an infrared receiver, the gas is dehumidified and dedusted, the flammability of the dehumidified and dedusted gas is detected again by an infrared combustible gas detection alarm, and the flammability fluctuation condition of the gas under extreme conditions can be detected, such as: the combustibility of the original gas and the dedusted gas is measured simultaneously, and whether the combustibility of the gas is increased under the conditions of water vapor, impurity particles and the like contained in the gas is judged through the fluctuation of the combustibility under two extreme conditions, so that the accuracy of the infrared combustible gas detection alarm for detecting the combustibility of the gas is ensured;
the alarm is particularly suitable for detecting combustible gas in industry, dust and moisture in an industrial production workshop are easy to increase, especially the space range generated by the dust and the moisture is near, and the dust and the moisture in other ranges are relatively low, so that the dust and the moisture in the gas are subjected to bipolarization, and the flammability of the gas is deviated when the dust and the moisture in the gas are different, therefore, the device firstly measures the flammability of the gas in a natural state, and then dehumidifies and removes dust from the gas to measure the flammability of the gas again, thereby avoiding the phenomenon that the dust and the moisture in the gas in the same industrial workshop are subjected to bipolarization, so that explosion accidents and combustion accidents are easy to occur;
according to the invention, the humidity of the gas is monitored through the monitoring unit after the gas is subjected to secondary detection, when the humidity of the gas is normal, the gas is directly discharged through the first gas discharge pipe, when the humidity of the gas is low, the gas can be conveyed to the inner part of the lower end of the humidification cavity through the air suction pipe and the sinking exhaust pipeline in sequence by the output fan, water is stored in the humidification cavity, and the gas is conveyed to the bottom of the water, humidified and then discharged from the upper end of the second gas discharge pipe;
the opening and closing assembly has the purpose of isolating the lower chamber from the purification chamber, and is used for purifying air when the filter cotton block is positioned in the first shell, when the filter cotton block is positioned in the purification chamber, the hot air fan is started, hot air generated by the hot air fan can pass through the filter cotton block, dust and moisture on the surface of the filter cotton block are taken away and discharged from the hot air outlet, so that when the four groups of filter cotton blocks are driven by the driving unit to rotate to be switched in the first shell, the filter cotton block positioned in the first shell can keep good dryness, and moisture in the air can be better absorbed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic structural view of a purification chamber and a detection chamber II of the present invention;
FIG. 4 is a schematic diagram of the humidifier chamber of the present invention;
FIG. 5 is a cross-sectional view of the housing of the present invention;
FIG. 6 is a schematic structural view of the magnetic attraction block of the present invention when closed;
fig. 7 is an enlarged view of the structure at B in fig. 5 according to the present invention.
In the figure: 1. a detection tank; 2. a first clapboard; 3. a second clapboard; 4. a first detection cavity; 5. a purification chamber; 6. a second detection cavity; 7. a humidification chamber; 8. a combustion box; 9. a suction fan; 10. an air intake duct; 11. an infrared emitter; 12. infrared combustible gas detection alarm; 13. an output fan; 14. a blow-off pipe; 15. an oxygen tank; 16. entering a pipeline; 17. a first shell; 18. a discharge chute; 19. filtering the cotton block; 20. a drive shaft; 21. a second shell; 22. a hot air pipe; 23. a hot air blower; 24. a motor protection case; 25. a drive unit; 26. a hot air outlet; 27. a sealing plate; 28. a first gas discharge pipe; 29. a drain pipe; 30. sinking the exhaust pipeline; 31. an air intake duct; 32. a monitoring unit; 33. a pushing unit; 34. a substrate; 35. a magnetic attraction block; 36. a first spring; 37. a stainless steel seal block; 38. air holes; 39. a combustion box inlet duct; 40. an ignition head; 41. an oxygen supply conduit; 42. a second gas discharge pipe; 43. a third gas discharge pipe; 44. supporting legs; 45. a guide post; 46. a first magnetic plate; 47. a limit nut; 48. a blocking plate; 49. an upper chamber; 50. a lower chamber; 51. a rubber strip; 52. a unidirectional rotation plate; 53. a support roll; 54. a second magnetic plate; 55. a communicating hole; 56. an infrared receiver; 57. a first limit plate; 58. a second limiting plate; 59. hinging shafts; 60. and a second spring.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1 to 7, an alarm for detecting combustible gas comprises a detection tank 1, wherein an input part, a detection part and an output part are arranged on the detection tank 1, a first partition plate 2 and a second partition plate 3 are arranged above and below the detection tank 1, and the first partition plate 2 and the second partition plate 3 divide the interior of the detection tank 1 into a first detection cavity 4, a second detection cavity 6 and a humidification cavity 7 which are distributed from top to bottom;
the input part comprises a suction fan 9 and an air suction pipeline 10, the lower end of the suction fan 9 is communicated with the interior of the first detection cavity 4, one side of the suction fan 9 is provided with the air suction pipeline 10 communicated with the exterior of the detection tank 1, and the air suction pipeline 10 is arranged on one side of the detection tank 1 along the height direction of the detection tank 1;
the detection part comprises a front detection mechanism and a rear detection mechanism, the front detection mechanism comprises an infrared emitter 11 and an infrared receiver 56, the infrared emitter 11 and the infrared receiver 56 are arranged oppositely, the infrared emitter 11 and the infrared receiver 56 are both fixedly arranged on the upper surface of the first partition plate 2, the infrared emitter 11 and the infrared receiver 56 are both arranged inside the first detection cavity 4, the rear detection mechanism comprises an infrared combustible gas detection alarm 12, the infrared combustible gas detection alarm 12 is fixed on the upper surface of the second partition plate 3, and the infrared combustible gas detection alarm 12 is arranged inside the second detection cavity 6;
the output part comprises an output fan 13, the output fan 13 is fixedly installed on the upper surface of the second partition plate 3, the output fan 13 is located inside the second detection cavity 6, an air suction pipe 31 and a sinking exhaust pipeline 30 are arranged on the output fan 13, the air suction pipe 31 is communicated with the inside of the second detection cavity 6, the sinking exhaust pipeline 30 penetrates through the second partition plate 3 and is communicated with the inside of the lower end of the humidification cavity 7, a sewage discharge pipe 14 is arranged at the lower end of the humidification cavity 7, a second gas discharge pipe 42 is arranged on one side of the upper end of the humidification cavity 7, a fourth one-way air valve for preventing external gas from entering the humidification cavity 7 is arranged in the second gas discharge pipe 42, and the fourth one-way air valve is not shown in the figure.
The middle part of baffle one 2 is provided with into pipeline 16, be provided with the one-way pneumatic valve one that avoids the palirrhea entering of the inside gas of casing one 17 to detect chamber one 4 among the entering pipeline 16, the lower fixed surface of baffle one 2 is provided with casing one 17, fixed casing two 21 that is provided with between the lower extreme of casing one 17 and the inner wall that detects jar 1, casing two 21, casing one 17 and detection jar 1 inner wall between form and purify chamber 5, the inside in chamber one 4 is detected in the upper end intercommunication that gets into pipeline 16, the inside of the lower extreme intercommunication casing one 17 that gets into pipeline 16, one side of casing one 17 is provided with the intercommunication and detects the inside discharge groove 18 in chamber two 6, casing one 17 lower extreme position is provided with and is used for the purification mechanism who dehumidifies the dust fall for the gas through casing one 17.
The invention utilizes the absorption principle of an infrared light source to detect the hydrocarbon combustible gas in the field environment, the gas is not compressed and otherwise processed when the gas is detected, the detection precision is high, when the flammability of the gas is detected by an infrared emitter 11 and an infrared receiver 56, the gas is subjected to dehumidification and dust removal treatment, the flammability of the dehumidified and dust removed gas is detected again by an infrared combustible gas detection alarm 12, and the flammability fluctuation condition of the gas under extreme conditions can be detected.
The alarm is particularly suitable for detecting combustible gas in industry, dust and moisture in an industrial production workshop are easy to increase, especially, the dust and the moisture are nearby a space range, and the dust and the moisture in other ranges are relatively low, so that the dust and the moisture in the gas are subjected to bipolarization, and the flammability of the gas is deviated when the dust and the moisture in the gas are different, therefore, the flammability of the gas in a natural state is firstly measured in the alarm, and then the gas is dehumidified and dedusted to measure the flammability of the gas again, so that the phenomenon that explosion accidents and combustion accidents are easy to occur due to bipolarization of the dust and the moisture in the gas in the same industrial workshop is avoided.
During operation, suction fan 9 starts, it firstly gets into through the pipeline of breathing in 10 to detect jar 1 outside gas and detects chamber 4, the gaseous process infrared emitter 11 and the infrared receiver 56 that get into in detecting chamber 4 detect once, and gaseous entering pipeline 16 can be filtered impurity such as cotton piece 19 filtering moisture and dust after getting into casing 17, the purpose of gaseous purification has been accomplished, the gaseous process discharge groove 18 of the gas after the purification gets into and detects storage in the chamber two 6, the infrared combustible gas detection alarm 12 that detects in the chamber two 6 carries out the secondary detection to gaseous flammability.
The gas is monitored for humidity through the monitoring unit 32 after secondary detection, when the humidity in the gas is normal, the gas is directly discharged through the first gas discharge pipe 28, when the humidity in the gas is low, the gas can be conveyed to the interior of the lower end of the humidification chamber 7 through the gas suction pipe 31 and the sinking exhaust pipeline 30 in sequence through the output fan 13, water is stored in the humidification chamber 7, and the gas is conveyed to the bottom of the water, is humidified and then is discharged from the upper end of the second gas discharge pipe 42.
The purification mechanism comprises filter cotton blocks 19, a transmission shaft 20, a driving unit 25 and a support roller 53, wherein one side of the detection cavity II 6 is provided with a motor protective shell 24 for mounting the driving unit 25, one side of the motor protective shell 24, which faces the outside of the detection tank 1, is opened, a sealing plate 27 is fixed at the opening position through a screw, the transmission shaft 20 is in transmission connection with the end part of the driving unit 25 and movably extends into the purification cavity 5, the support roller 53 is fixedly connected at the outer ring of the transmission shaft 20, the filter cotton blocks 19 are provided with four groups, the four groups of filter cotton blocks 19 are fixed at the outer ring of the support roller 53 in a circular array shape, one group of filter cotton blocks 19 at the upper end of the support roller 53 enter into the first shell 17 from the opening at the lower end of the first shell 17, and a set of filter wool plugs 19 entering the interior of the housing one 17 is blocked at one side of the discharge slot 18, the filter wool plugs 19 purging the gas flowing from the housing one 17 to the discharge slot 18.
The driving unit 25 can use a servo motor or the like, the driving unit 25 drives the supporting roll 53 to rotate through the transmission shaft 20, the supporting roll 53 is fixedly connected with the filter cotton block 19, therefore, the filter cotton block 19 rotates synchronously with the supporting roll 53, and when the filter cotton block 19 rotates to block at one side of the discharge slot 18, the gas flowing to the discharge slot 18 through the first shell 17 is filtered.
The first shell 17 is internally and fixedly provided with a blocking plate 48, the blocking plate 48 divides the first shell 17 into an upper chamber 49 and a lower chamber 50 which are distributed up and down, the blocking plate 48 is provided with a communicating hole 55, the upper parts of a group of filtering cotton blocks 19 at the upper ends of supporting rollers 53 are hermetically attached to the lower end of the communicating hole 55, the upper surface of the blocking plate 48 is fixedly welded with a guide column 45, the guide column 45 is provided with a first magnetic plate 46 in a sliding manner, the first magnetic plate 46 corresponds to the upper part of the communicating hole 55, the upper end of the guide column 45 is connected with a limiting nut 47 in a threaded fit manner, the limiting nut 47 blocks the upper part of the first magnetic plate 46, one end, far away from the supporting roller 53, of the filtering cotton block 19 is internally and fixedly provided with a second magnetic plate 54, and the second magnetic plate 54 and the first magnetic plate 46 are far away from each other in a repelling manner.
In order to avoid the phenomenon that the discharge groove 18 is directly exposed when the filter cotton block 19 rotates, so that gas is discharged without being purified, a first magnetic plate 46 is arranged at the upper end of the barrier plate 48, when the filter cotton block 19 rotates below the corresponding communication hole 55, the corresponding second magnetic plate 54 and the first magnetic plate 46 repel away from each other, so that the first magnetic plate 46 slides upwards along the guide column 45, at the moment, gas in the upper chamber 49 can enter the lower chamber 50 through an opening between the lower surface of the first magnetic plate 46 and the upper part of the communication hole 55, and when the filter cotton block 19 rotates away from the lower part of the communication hole 55, the first magnetic plate 46 loses the repelling effect of the second magnetic plate 54 and adheres to the upper end of the communication hole 55, so that the gas is prevented from continuously entering the lower chamber 50.
The lower end of the lower cavity 50 is provided with an opening and closing assembly, the opening and closing assembly comprises a one-way rotating plate 52, one end of the one-way rotating plate 52 is movably hinged on the first shell 17 through a hinge shaft 59, the other end of the one-way rotating plate 52 is fixedly provided with a rubber strip 51, the rubber strip 51 is movably attached to the outer ring of the support roller 53, a limiting assembly is arranged on the first shell 17 close to the hinge shaft 59 and comprises a first limiting plate 57, a second limiting plate 58 and a second spring 60, the first limiting plate 57 and the second limiting plate 58 are integrally arranged, the second spring 60 is fixedly connected between the surface of the second limiting plate 58 and the one-way rotating plate 52, the first limiting plate 57 is integrally welded on the first shell 17, the two sides of the support roller 53 are respectively provided with the one-way rotating plate 52, the first limiting plate 57 corresponds to the two sets of one-way rotating plates 52, and one set of the first limiting plate 57 is movably attached to the upper surface of the one-way rotating plate 52, the other set of first limit plates 57 movably abuts on the lower surface of the one-way rotating plate 52.
Wherein, the subassembly that opens and shuts has played the purpose of keeping apart lower cavity 50 and purification chamber 5, be used for purifying gas when filtering cotton piece 19 and being located casing 17 inside, when filtering cotton piece 19 and being located purification chamber 5 inside, hot-blast air heater 23 starts, hot-blast the process filtering cotton piece 19 that hot-blast air heater 23 produced, take away dust and the moisture on filtering cotton piece 19 surface and discharge from hot-blast exit 26 department, make drive unit 25 drive four groups filter cotton piece 19 rotatory when casing 17 inside switches, the filtering cotton piece 19 that is located casing 17 inside can keep good aridity, the moisture in the better adsorbed gas of being convenient for.
The lower end of the second shell 21 is provided with a drain pipe 29, the drain pipe 29 penetrates through the lower end of the second detection cavity 6 and is communicated between the purification cavity 5 and the humidification cavity 7, the side face of the detection tank 1 is fixedly provided with an air heater 23, the air heater 23 is communicated with the interior of the purification cavity 5 through a hot air pipe 22, one side of the upper end of the purification cavity 5 is provided with a hot air outlet 26 communicated with the exterior of the detection tank 1, a one-way air valve II for preventing the exterior gas from entering the interior of the purification cavity 5 is arranged in the hot air outlet 26, and the one-way air valve II is not shown in the figure.
When the filter cotton block 19 filters excessive moisture in the air, water drops are generated and flow into the humidification chamber 7 through the drain pipe 29 to be stored, so that the water in the humidification chamber 7 is supplemented, and the lower end of the detection tank 1 is provided with the drain pipe 14 communicated with the lower end of the humidification chamber 7, so that the water in the humidification chamber 7 is conveniently discharged.
The inner wall of the humidification chamber 7 is fixedly provided with a combustion box 8, one side of the lower end of the sinking exhaust pipeline 30 is provided with a combustion box inlet pipeline 39 communicated with the interior of the combustion box 8, the combustion box inlet pipeline 39 is internally provided with a one-way air valve six for preventing gas in the combustion chamber 8 from reversely entering the combustion box inlet pipeline 39, the one-way air valve six is not shown in the figure, one side of the detection tank 1 is provided with an oxygen tank 15, the oxygen tank 15 is communicated with the interior of the combustion box 8 through an oxygen supply pipeline 41, the inner wall of the combustion box 8 is provided with an ignition head 40 corresponding to one side of the oxygen supply pipeline 41, one side of the combustion box 8 is provided with a gas discharge pipe three 43 communicated with the exterior of the detection tank 1, the gas discharge pipe three 43 is provided with a one-way air valve five for preventing external gas from entering the combustion box 8, the one-way air valve five is not shown in the figure, and one side of the upper end of the humidification chamber 7 is provided with a gas discharge pipe two 42.
It should be noted that the lower ends of the combustion box air inlet duct 39 and the sinking exhaust duct 30 are further provided with devices such as electromagnetic valves for controlling the direction of air, which are not shown in the drawings and are conventional technologies, and for achieving the purpose of the present invention, a person skilled in the art may set devices such as an electromagnetic valve, a manual valve, and a check valve, which are conventional in the prior art, on the corresponding duct according to the requirement, and details are not described herein.
Further, if the combustibility of the gas is high, the gas can be led into the combustion box 8 through the combustion box inlet pipe 39 on the lower end side of the sinking exhaust pipe 30, the gas can be combusted in a small range in the combustion box 8 after being ignited by the ignition head 40, the combusted gas is discharged through the gas discharge pipe III 43, so that the combustibility of the gas after combustion is reduced, and the risk of high combustibility of the gas can be reduced after the gas is discharged again.
The oxygen supply pipeline 41 on the oxygen tank 15 can supplement oxygen to the combustion box 8, so that the concentration of the oxygen in the combustion box 8 can be conveniently adjusted according to the flammability of the gas, the combustible gas can be conveniently and fully combusted, and the combustion box 8 uses an explosion-proof box body.
The second gas discharge pipe 42 is in an L-shaped structure, and a water filling port is arranged in the middle of the second gas discharge pipe 42 and is lower than the opening at the upper end of the second gas discharge pipe 42.
The water adding port on the second gas outlet pipe 42 can be used for adding water into the humidifying cavity 7.
A first gas discharge pipe 28 is arranged on one side of the lower end of the second detection cavity 6, a third one-way gas valve for preventing external gas from entering the second detection cavity 6 is arranged in the first gas discharge pipe 28, the third one-way gas valve is not shown in the figure, the first gas discharge pipe 28 is communicated with the outside of the detection tank 1, and a monitoring unit 32 for monitoring the humidity of the gas in the second detection cavity 6 is arranged on the inner wall of the second detection cavity 6.
The monitoring unit 32 may use a humidity sensor or the like.
Be provided with the gas pocket 38 that runs through inside and outside on the pipeline 10 of breathing in, gas pocket 38 is provided with the multiunit, multiunit gas pocket 38 equidistance distributes, one side of gas pocket 38 is provided with stainless steel sealing block 37, stainless steel sealing block 37 passes through spring 36 fixed connection on the wall body of pipeline 10 of breathing in, the upper surface of detecting jar 1 passes through screw fixedly connected with base plate 34, pushing unit 33 is installed to the lower extreme of base plate 34, pushing unit 33 distributes along the direction of height of pipeline 10 of breathing in, magnetic attraction piece 35 is installed to pushing unit 33's lower extreme, attract mutually between magnetic attraction piece 35 and the stainless steel sealing block 37.
Further, when the pushing unit 33 pushes the magnetic attraction block 35 to descend to different height positions, the magnetic attraction block 35 can suck the stainless steel sealing block 37 at the corresponding position out of the air hole 38, so that the external air enters the air suction pipeline 10 through the air hole 38, and when the air holes 38 at different height positions are controlled to be opened, the detection of the combustibility of the air at different height positions in the environment is facilitated, and the pushing unit 33 can use an electric push rod or an air cylinder or other devices.
Wherein, the fixed supporting leg 44 that supports subaerial that is provided with in bottom of detecting jar 1, combustion box 8 set up in the bottom of humidifying chamber 7, but the temperature of combustion box 8 is reduced to the water of humidifying chamber 7 bottom to avoid the dangerous condition that combustion box 8 high temperature appears.
The alarm detects the hydrocarbon combustible gas in the field environment by using the absorption principle of the infrared light source, the gas is not compressed or otherwise processed when the gas is detected, the detection precision is high, the gas is dehumidified and dedusted after the flammability of the gas is detected by using the infrared emitter 11 and the infrared receiver 56, and the flammability of the dehumidified and dedusted gas is detected again by using the infrared combustible gas detection alarm 12, so that the flammability fluctuation condition of the gas under extreme conditions can be detected.
The alarm is particularly suitable for detecting combustible gas in industry, dust and moisture in an industrial production workshop are easy to increase, especially, the dust and the moisture are nearby a space range, and the dust and the moisture in other ranges are relatively low, so that the dust and the moisture in the gas are subjected to bipolarization, and the flammability of the gas is deviated when the dust and the moisture in the gas are different, therefore, the flammability of the gas in a natural state is firstly measured in the alarm, and then the gas is dehumidified and dedusted to measure the flammability of the gas again, so that the phenomenon that explosion accidents and combustion accidents are easy to occur due to bipolarization of the dust and the moisture in the gas in the same industrial workshop is avoided.
The during operation, suction fan 9 starts, it detects jar 1 outside gas at first gets into through the pipeline of breathing in 10 and detects chamber 4, the gaseous process infrared emitter 11 and the infrared receiver 56 that get into in the detection chamber 4 detect once, and gaseous getting into behind the casing 17 through the admission pipeline 16 can be filtered impurity such as cotton piece 19 filtering moisture and dust, the purpose of gaseous purification has been accomplished, the gaseous 18 storage that gets into in the detection chamber two 6 through discharging groove after the purification, the infrared combustible gas detection alarm 12 that detects in the chamber two 6 carries out the secondary detection to gaseous flammability.
The gas is monitored for humidity through the monitoring unit 32 after secondary detection, when the humidity in the gas is normal, the gas is directly discharged through the first gas discharge pipe 28, when the humidity in the gas is low, the gas can be conveyed to the interior of the lower end of the humidification chamber 7 through the suction pipe 31 and the sinking exhaust pipeline 30 in sequence through the output fan 13, water is stored in the humidification chamber 7, and the gas is conveyed to the bottom of the water, is humidified and then is discharged from the upper end of the second gas discharge pipe 42.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.
Claims (10)
1. An alarm for combustible gas detection comprises a detection tank (1), and is characterized in that the detection tank (1) is provided with an input part, a detection part and an output part, a first partition plate (2) and a second partition plate (3) are arranged above and below the detection tank (1), and the first partition plate (2) and the second partition plate (3) divide the interior of the detection tank (1) into a first detection cavity (4), a second detection cavity (6) and a humidification cavity (7) which are distributed from top to bottom;
the input part comprises a suction fan (9) and an air suction pipeline (10), the lower end of the suction fan (9) is communicated with the interior of the detection cavity I (4), the air suction pipeline (10) communicated with the exterior of the detection tank (1) is arranged on one side of the suction fan (9), and the air suction pipeline (10) is arranged on one side of the detection tank (1) along the height direction of the detection tank (1);
the detection part comprises a front detection mechanism and a rear detection mechanism, the front detection mechanism comprises an infrared emitter (11) and an infrared receiver (56), the infrared emitter (11) and the infrared receiver (56) are arranged oppositely, the infrared emitter (11) and the infrared receiver (56) are both fixedly arranged on the upper surface of the first partition plate (2), the infrared emitter (11) and the infrared receiver (56) are both arranged inside the first detection cavity (4), the rear detection mechanism comprises an infrared combustible gas detection alarm (12), the infrared combustible gas detection alarm (12) is fixed on the upper surface of the second partition plate (3), and the infrared combustible gas detection alarm (12) is arranged inside the second detection cavity (6);
the output part comprises an output fan (13), the output fan (13) is fixedly installed on the upper surface of the partition plate two (3), the output fan (13) is located inside the detection cavity two (6), an air suction pipe (31) and a sinking exhaust pipeline (30) are arranged on the output fan (13), the air suction pipe (31) is communicated with the inside of the detection cavity two (6), the sinking exhaust pipeline (30) penetrates through the partition plate two (3) and is communicated with the inside of the lower end of the humidification cavity (7), a blow-off pipe (14) is arranged at the lower end of the humidification cavity (7), and a gas discharge pipe two (42) is arranged on one side of the upper end of the humidification cavity (7).
2. An alarm for combustible gas detection according to claim 1 wherein: the middle part of baffle (2) is provided with into pipeline (16), the lower fixed surface of baffle (2) is provided with casing (17), fixed casing two (21) that is provided with between the lower extreme of casing (17) and the inner wall that detects jar (1), form between casing two (21), casing (17) and the detection jar (1) inner wall and purify chamber (5), the inside in upper end intercommunication detection chamber (4) that gets into pipeline (16), the inside of the lower extreme intercommunication casing (17) that gets into pipeline (16), one side of casing (17) is provided with the intercommunication and detects inside discharge groove (18) in chamber two (6), casing (17) lower extreme position is provided with the purification mechanism who is used for the gas dehumidification dust fall through casing (17).
3. An alarm for combustible gas detection according to claim 2 wherein: the purification mechanism comprises a filtering cotton block (19), a transmission shaft (20), a driving unit (25) and a supporting roller (53), a motor protective shell (24) for installing the driving unit (25) is arranged on one side of the detection cavity II (6), the motor protective shell (24) faces to one side opening of the outside of the detection tank (1), a sealing plate (27) is fixed at the opening position through a screw, the transmission shaft (20) is in transmission connection with the end part of the driving unit (25) and movably extends into the purification cavity (5), the supporting roller (53) is fixedly connected with the outer ring of the transmission shaft (20), the filtering cotton blocks (19) are provided with four groups, the four groups of filtering cotton blocks (19) are fixed at the outer ring of the supporting roller (53) in a circular array shape, and a group of filtering cotton blocks (19) at the upper end of the supporting roller (53) enters the inside of the first shell (17) from the lower end opening of the first shell (17), and a group of filter cotton blocks (19) entering the interior of the first shell (17) are blocked at one side of the discharge groove (18), and the filter cotton blocks (19) purify the gas flowing to the discharge groove (18) from the first shell (17).
4. An alarm for combustible gas detection according to claim 3 wherein: the inner part of the first shell (17) is fixedly provided with a blocking plate (48), the blocking plate (48) separates the first shell (17) into an upper cavity (49) and a lower cavity (50) which are distributed up and down, the blocking plate (48) is provided with a communicating hole (55), the upper part of a group of filtering cotton blocks (19) at the upper end of a support roller (53) is hermetically attached to the lower end of the communicating hole (55), the upper surface of the blocking plate (48) is fixedly welded with a guide column (45), the guide column (45) is provided with a first magnetic plate (46) in a sliding manner, the first magnetic plate (46) corresponds to the upper part of the communicating hole (55), the upper end of the guide column (45) is connected with a limit nut (47) through thread fit, the limit nut (47) blocks the upper part of the first magnetic plate (46), and the inner part of one end, far away from the support roller (53), of the filtering cotton blocks (19) is fixedly provided with a second magnetic plate (54), the second magnetic plate (54) and the first magnetic plate (46) repel away from each other.
5. An alarm for combustible gas detection according to claim 4 wherein: the lower end of the lower cavity (50) is provided with an opening and closing assembly, the opening and closing assembly comprises a one-way rotating plate (52), one end of the one-way rotating plate (52) is movably hinged to a first shell (17) through a hinge shaft (59), the other end of the one-way rotating plate (52) is fixedly provided with a rubber strip (51), the rubber strip (51) is movably attached to the outer ring of a support roller (53), a limiting assembly is arranged on the first shell (17) and close to the hinge shaft (59), the limiting assembly comprises a first limiting plate (57), a second limiting plate (58) and a second spring (60), the first limiting plate (57) and the second limiting plate (58) are integrally arranged, the second spring (60) is fixedly connected between the surface of the second limiting plate (58) and the one-way rotating plate (52), and the first limiting plate (57) is integrally welded on the first shell (17), both sides of backing roll (53) all are provided with one-way rotor plate (52), first limiting plate (57) correspond two sets of one-way rotor plates (52) and are provided with two sets ofly, and a set of first limiting plate (57) activity laminating is at the upper surface of one-way rotor plate (52), and another group of first limiting plate (57) activity laminating is at the lower surface of one-way rotor plate (52).
6. An alarm for combustible gas detection according to claim 5 wherein: casing two (21) lower extreme is provided with drain pipe (29), drain pipe (29) pass the lower extreme and the intercommunication that detect two (6) in chamber between purification chamber (5) and humidification chamber (7), the side fixed mounting that detects jar (1) has air heater (23), air heater (23) are through hot-blast main (22) and the inside intercommunication that purifies chamber (5), the upper end one side that purifies chamber (5) is provided with the intercommunication and detects jar (1) outside hot-blast hole (26) that exhales.
7. An alarm for combustible gas detection according to claim 6 wherein: fixed mounting has combustion box (8) on the inner wall of humidification chamber (7), the lower extreme one side of sinking exhaust duct (30) is provided with intercommunication combustion box inlet duct (39) of combustion box (8) inside, one side of detecting jar (1) is provided with oxygen jar (15), oxygen jar (15) are through the inside intercommunication of oxygen supply pipeline (41) with combustion box (8), install on the inner wall of combustion box (8) and correspond ignition head (40) in oxygen supply pipeline (41) one side, one side of combustion box (8) is provided with the intercommunication and detects jar (1) outside gas discharge pipe three (43), upper end one side of humidification chamber (7) is provided with gas discharge pipe two (42).
8. An alarm for combustible gas detection according to claim 7 wherein: the second gas discharge pipe (42) is of an L-shaped structure, and a water filling port is arranged in the middle of the second gas discharge pipe (42) and is lower than an opening at the upper end of the second gas discharge pipe (42).
9. An alarm for combustible gas detection according to claim 8 wherein: detect the lower extreme one side of chamber two (6) and be provided with gas discharge pipe (28), the outside of jar (1) is detected in gas discharge pipe (28) intercommunication, install monitoring unit (32) that the monitoring detected gas humidity in chamber two (6) on the inner wall of detection chamber two (6).
10. An alarm for combustible gas detection according to claim 1 wherein: be provided with inside and outside air hole (38) that run through on breathing in pipeline (10), air hole (38) are provided with the multiunit, and multiunit air hole (38) equidistance distributes, one side of air hole (38) is provided with stainless steel seal block (37), stainless steel seal block (37) are through spring (36) fixed connection on the wall body of breathing in pipeline (10), the upper surface that detects jar (1) passes through screw fixedly connected with base plate (34), promotion unit (33) are installed to the lower extreme of base plate (34), promote unit (33) along the direction of height distribution of breathing in pipeline (10), and the lower extreme installation that promotes unit (33) has magnetism to inhale piece (35), the magnetism inhales between piece (35) and the stainless steel seal block (37) and inhales mutually.
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| CN202210924717.XA CN114999121A (en) | 2022-08-03 | 2022-08-03 | Alarm for combustible gas detection |
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| CN202210924717.XA CN114999121A (en) | 2022-08-03 | 2022-08-03 | Alarm for combustible gas detection |
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| CN112466095A (en) * | 2019-09-06 | 2021-03-09 | 株洲新奥燃气有限公司 | Household gas alarm |
| CN112526064A (en) * | 2020-11-12 | 2021-03-19 | 彭宇昂 | Coal mine accident prevention and control operation environment detection equipment and detection method |
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Application publication date: 20220902 |