CN113884623B - Method for detecting inflammable gas in dangerous chemical storage area and detection alarm device - Google Patents
Method for detecting inflammable gas in dangerous chemical storage area and detection alarm device Download PDFInfo
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- CN113884623B CN113884623B CN202111119071.XA CN202111119071A CN113884623B CN 113884623 B CN113884623 B CN 113884623B CN 202111119071 A CN202111119071 A CN 202111119071A CN 113884623 B CN113884623 B CN 113884623B
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- 239000000126 substance Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 64
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 44
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 239000000383 hazardous chemical Substances 0.000 claims description 14
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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- 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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Abstract
The invention belongs to the technical field of flammable gas detection, and discloses a method for detecting flammable gas in a dangerous chemical storage area, which comprises the following steps: the first step: firstly, paving air extraction and alarm modules on the roof of a storage area, wherein the adjacent air extraction and alarm modules are paved at equal distances, and the distribution form of the final paved air extraction and alarm modules is determined according to the house type of the civil engineering design of the storage area. According to the invention, the interface selection cover is attracted upwards by the magnetism of the electromagnet, and the airflow groove on the surface of the interface selection cover is only communicated with one interface, so that only the air extraction and alarm module communicated with the interface can normally collect air, and then the part of air is subjected to targeted inspection.
Description
Technical Field
The invention belongs to the technical field of flammable gas detection, and particularly relates to a method for detecting flammable gas in a dangerous chemical storage area and a detection alarm device.
Background
The hazardous chemical storage area is used for storing dangerous chemicals, and the dangerous chemicals are generally stored in a strictly sealed mode, for example, a pressure tank is used for filling, but in order to further ensure safety, a corresponding detection alarm device is necessarily installed in the storage area to detect the storage area, so that leakage of hazardous chemical gas is reminded.
The existing real-time monitoring mode to hazardous chemical gas has multiple kinds, mainly through corresponding check out test set and alarm device of storage area installation, when detecting that contain the inflammable gas or the inflammable gas concentration of hazardous chemical in the air exceeds the standard after, report an emergency and ask for help or increased vigilance, but because the area of storage area is great, the maintenance personal still need carry out regional screening alone to revealing the district, finally confirm revealing the district, lead to lacking timeliness, also have accessible to set up a plurality of check out test sets and alarm device in different positions, but this kind of mode is very high cost, uneconomical.
Aiming at the problems, the invention provides a novel method for detecting inflammable gas in a dangerous chemical storage area and a detection alarm device, which are used for improving the timeliness of alarming and providing area positioning on the basis of controlling the cost and reducing the determination time to the greatest extent.
Disclosure of Invention
The invention aims to provide a method for detecting inflammable gas in a hazardous chemical substance storage area and a detection alarm device, so as to solve the problems in the background art.
In order to achieve the above object, the present invention provides the following technical solutions: a method for detecting inflammable gas in a hazardous chemical substance storage area comprises the following steps:
the first step: firstly, paving air extraction and alarm modules on the roof of a storage area, wherein the air extraction and alarm modules are paved equidistantly, the distribution form of the air extraction and alarm modules is finally paved according to the house type designed by the civil engineering of the storage area, a detection device is arranged at the opposite center position of the roof of the storage area, the interface of the detection device is communicated with an air extraction pipe of the air extraction and alarm module through a slender hose, the number of the air extraction and alarm modules is not strictly regulated, when the space of the storage area is larger, some air extraction and alarm modules can be paved equidistantly, but the maximum number of the air extraction and alarm modules is not more than sixteen, because the arrangement of more air extraction and alarm modules increases the time length and uncertainty for the subsequent judgment process, and the device is required to control the judging time to the minimum to avoid errors to the greatest extent in consideration of rapid scattering of inflammable gas in the air, so the number of the air extraction and alarm modules is not excessively set, and one distribution form of the air extraction and alarm modules and the detection device is displayed in the figure;
and a second step of: the air draft fan can extract all parts of air in the space of the storage area, the air flow enters the air draft tube and is conveyed to the air tube through the slender hose and the communicated inner cavity of the detection device, the air flow flows through the air detection sensor and is detected through the air detection sensor, the processor and the controller module control the air draft fan to be electrified when inflammable gas contained in the air flow exceeds the standard, the interface selection cover which is originally positioned at the lower part of the inner cavity of the detection device is upwards attracted by the magnetic attraction of the air draft fan, the interface selection cover partially seals the interfaces distributed on the surface of the detection device, only one connection is reserved between the interfaces outside the detection device and the air draft tube, if the number of the air draft and alarm modules which are not arranged in the storage area is less than sixteen, the interfaces which are not connected with the air draft tube are sealed, when the gas detection sensor initially detects that the storage area contains the excessive flammable gas, the processor and the controller module electrify the electromagnet, the electromagnet is provided with magnetic force to suck the whole interface selection cover, at the moment, the air flow groove on the surface of the interface selection cover is only communicated with one interface, so that only the air extraction and alarm module communicated with the interface can normally collect the gas, and the air flow speed in the passage is accelerated due to the increase of the air inlet quantity, so that the detection device can rapidly collect the gas, carry out targeted detection on the part of the gas, record the concentration of the flammable gas in the area, facilitate the subsequent comparison, and the other interfaces are blocked by the peripheral surface of the cover body to cause the air extraction and alarm module of other parts to be incapable of collecting the gas;
and a third step of: the motor control interface selects the cover to rotate, and the conducted interfaces are switched one by one, so that the detection device can detect the air flow sucked by a single air suction and alarm module one by one, namely, each part of air in the storage area is screened one by one until all the air is screened;
fourth step: the processor and the controller module compare the concentration of inflammable gas contained in the gas of each part to obtain a storage area part corresponding to the gas with the maximum concentration, and control the alarm lamp and the buzzer on the part air extraction and alarm module to flash and buzzing alarm respectively.
Preferably, including detection device, equidistance set up in sixteen interfaces on detection device surface, fixed intercommunication in detection device's tuber pipe, set up gas detection sensor and air extraction fan in the tuber pipe inner chamber, carry out treater and the controller module that control gas detection sensor and air extraction fan, its characterized in that: an interface selection cover is sleeved in an inner cavity of the detection device, a motor controlled by a processor and a controller module is arranged at the bottom of the inner cavity of the detection device, a main shaft of the motor penetrates through the interface selection cover and is in transmission fit with the interface selection cover, a lower limit card and an upper limit card are arranged on the inner cavity wall of the detection device, the interface selection cover is always positioned between the lower limit card and the upper limit card, an electromagnet is further arranged at the top of the inner cavity of the detection device, air extraction and alarm modules are distributed at equal heights around the detection device, the motor does not rotate in an initial state, and clamping teeth arranged on the main shaft of the motor can be clamped with upper and lower through grooves of the interface selection cover, so that the interface selection cover can move up and down along the main shaft of the motor, and can also be clamped with the through grooves of the clamping teeth and the interface selection cover to drive the interface selection cover to rotate;
the air extraction and alarm module comprises an air extraction pipe, alarm lamps and a buzzer, wherein the alarm lamps and the buzzer are fixedly connected to the two sides of the air extraction pipe through mounting frames, the air extraction pipe is communicated with an interface through an elongated hose, the air extraction pipe and the alarm lamps are controlled by a processor and a controller module, the alarm lamps are red lamps, after the alarm lamps are started, the alarm lamps flash to illuminate a lower area to illuminate red light, the lower area is covered, workers are prompted to have the highest concentration of inflammable gas in the area, chemical objects stored in the area are mainly checked, and the buzzer alarm can outwards generate sound to play a role in guiding the workers.
Preferably, the upper limit clamp is arranged above the interface selection cover and below the electromagnet, the upper limit clamp is spaced from the electromagnet by one millimeter in the vertical direction, ten balls are annularly and equidistantly movably arranged at the bottom of the upper limit clamp, the upper limit clamp is used for limiting the vertical movement height of the interface selection cover, and the interface selection cover can be prevented from being directly contacted with the electromagnet.
Preferably, the interface selection cover comprises a cover body, an iron top cover fixedly arranged at the top of the cover body, a flow groove formed in the outer peripheral surface of the cover body, and a lace wheel fixedly arranged at the bottom of the cover body, wherein the outer peripheral surface of the cover body is in fit contact with the inner wall of the detection device, the upper limit of movement of the interface selection cover in the vertical direction is that the top surface of the iron top cover is in contact with the ball at the bottom of the upper limit clamp, the lower limit of movement of the interface selection cover in the vertical direction is that the bottom surface of the cover body is in contact with the top surface of the lower limit clamp, the iron top cover on the interface selection cover is made of iron, so that the iron top cover can be attracted by an electromagnet to drive the whole interface selection cover to rise, the iron top cover can be in contact with the ball finally, and the ball can roll in cooperation with the rotation of the iron top cover when the interface selection cover rotates, so as to replace sliding friction or other friction situations, and reduce the rotation resistance of the interface selection cover.
Preferably, when the interface selection cover is positioned at the upper limit of movement in the vertical direction, the airflow groove is aligned and communicated with one of the interfaces, the other interfaces are blocked by the outer peripheral surface of the cover body, when the interface selection cover is positioned at the lower limit of movement in the vertical direction, the interface selection cover is always positioned below the interfaces, and in an initial state, the interface selection cover is positioned at the top of the lower limit card and is limited by the lower limit card so as not to continuously move downwards.
Preferably, the bleeder vent of intercommunication cover body inner chamber and external environment has been seted up on the surface of iron top cap, and the gas that the exhaust tube was collected is carried the back through the pipeline passageway and is got into from corresponding interface to in the inner chamber of interface selection cover, preferential output is to the inner chamber space of the detection device of interface selection cover top from the bleeder vent of iron top cap, in the aquatic enters into the tuber pipe, and the air current can be through the detection of gas detection sensor.
Preferably, the outer peripheral surface of the lace wheel is provided with arc teeth with the same number as the interfaces.
Preferably, the inner cavity of the detection device is also provided with an elastic wheel, the elastic wheel comprises a sliding rod movably clamped on the shell of the detection device, a spring sleeved on the outer surface of the sliding rod and a positioning wheel fixedly connected to the inner end of the sliding rod, two ends of the sliding rod are elastically supported on the positioning wheel and the inner wall of the detection device, when the interface selection cover moves vertically, the positioning wheel is always in contact with the lace wheel, the height of the lace wheel is higher, and therefore, when the lace wheel rises, the positioning wheel cannot be separated from the lace wheel even if sliding friction occurs between the positioning wheel and the lace wheel.
Preferably, when the interface selection cover is stable and does not rotate, the wheel body of the positioning wheel is clamped between two adjacent arc teeth of the lace wheel, when the lace wheel rotates, the positioning wheel can roll on the outer circumferential surface of the lace wheel along the arc teeth of the lace wheel, when the angle of rotation of the lace wheel is in error, the positioning wheel can only contact with one arc tooth, one arc tooth can not provide stable support for the positioning wheel, the positioning wheel can move forwards to enable the arc teeth contacted with the positioning wheel to rotate under the force of the arc teeth due to the elastic force of the spring, and finally the positioning wheel contacts with the other arc teeth and form force balance between the two arc teeth and the positioning wheel, so that the lace wheel drives the interface selection cover to correct the whole rotation angle.
Preferably, the air flow groove is aligned with one interface in the vertical direction in the initial state, so that after the air flow groove rises, the air flow groove can be directly aligned with one interface in a superposition mode, and then the air flow groove can conduct the interface and close other interfaces.
The beneficial effects of the invention are as follows:
1. according to the invention, the air suction and alarm module and the detection device are paved on the roof of the storage area, the interface of the detection device is communicated with the air suction pipe of the air suction and alarm module through the long and thin hose, the motor and the interface selection cover are arranged in the inner cavity of the detection device, so that the motor and the interface selection cover are in transmission connection, the interface selection cover can move up and down along the main shaft of the motor, when inflammable gas is detected in gas, the interface selection cover is lifted by the magnetic attraction of the electromagnet, and the airflow groove on the surface of the interface selection cover is communicated with only one interface, so that only the air suction and alarm module communicated with the interface can normally collect the gas, and further the part of gas is subjected to targeted inspection.
2. According to the invention, by arranging the elastic wheel, the positioning wheel is elastically contacted with two adjacent arc teeth of the lace wheel in a rolling manner, when the rotation degree of the lace wheel is in error, the positioning wheel can only be contacted with one arc tooth, but one arc tooth can not provide stable support for the positioning wheel, the positioning wheel can move forward due to the elastic force of the spring to enable the arc tooth contacted with the positioning wheel to rotate under the force of the spring, and finally the positioning wheel is contacted with the other arc tooth, and the stress balance is formed between the two arc teeth and the positioning wheel, so that the lace wheel drives the whole rotation angle of the interface selection cover to be corrected.
3. According to the invention, the alarm lamp and the buzzer are arranged on each air extraction and alarm module, and are controlled by the processor and the controller module, when the highest concentration of the area where the corresponding air extraction and alarm module is located is detected, the leakage area can be primarily judged to be near the leakage area, so that the processor and the controller module control the alarm lamp and the buzzer to work, the position of the leakage area of a worker is prompted, and the leakage area is inspected in a key way.
Drawings
FIG. 1 is an overall schematic diagram of a detection device of the present invention;
FIG. 2 is a front view of the detection device of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the detecting device of the present invention;
FIG. 4 is an exploded view of the internal structure of the detection device of the present invention;
FIG. 5 is a schematic illustration of the engagement of the pinch roller with the lace roller of the present invention;
FIG. 6 is a schematic diagram of the structure of the upper limit card of the present invention;
FIG. 7 is a cross-sectional view showing the internal structure of the detecting unit of the present invention;
FIG. 8 is a schematic diagram of an interface selection mask according to the present invention;
FIG. 9 is a schematic diagram of the structure of the air extraction and alarm module according to the present invention;
FIG. 10 is a diagram showing an exemplary distribution of the detection device and the pumping and alarm module according to the present invention.
In the figure: 1. a detection device; 2. an air duct; 3. an interface; 4. a processor and controller module; 5. a gas detection sensor; 6. an exhaust fan; 7. a motor; 8. an interface selection cover; 81. a cover body; 82. an iron top cover; 83. a gas flow groove; 84. lace wheels; 9. an electromagnet; 10. an elastic wheel; 101. a slide bar; 102. a spring; 103. a positioning wheel; 11. a lower limit clip; 12. an upper limit clamp; 121. a ball; 13. an air extraction and alarm module; 131. an exhaust pipe; 132. an alarm lamp; 133. a buzzer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 10, in an embodiment of the present invention, a method for detecting inflammable gas in a hazardous chemical substance storage area includes the following method steps:
the first step: firstly, paving air extraction and alarm modules on the roof of a storage area, wherein the air extraction and alarm modules are paved equidistantly, the distribution form of the air extraction and alarm modules is finally paved according to the house type designed by the civil engineering of the storage area, a detection device is arranged at the opposite center position of the roof of the storage area, the interface of the detection device is communicated with an air extraction pipe of the air extraction and alarm module through a slender hose, the number of the air extraction and alarm modules is not strictly regulated, when the space of the storage area is larger, some air extraction and alarm modules can be paved equidistantly, but the maximum number of the air extraction and alarm modules is not more than sixteen, because the arrangement of more air extraction and alarm modules increases the time length and uncertainty for the subsequent judgment process, and the device is required to control the judging time to the minimum to avoid errors to the greatest extent in consideration of rapid scattering of inflammable gas in the air, so the number of the air extraction and alarm modules is not excessively set, and one distribution form of the air extraction and alarm modules and the detection device is displayed in the figure;
and a second step of: the air draft fan can extract all parts of air in the space of the storage area, the air flow enters the air draft tube and is conveyed to the air tube through the slender hose and the communicated inner cavity of the detection device, the air flow flows through the air detection sensor and is detected through the air detection sensor, the processor and the controller module control the air draft fan to be electrified when inflammable gas contained in the air flow exceeds the standard, the interface selection cover which is originally positioned at the lower part of the inner cavity of the detection device is upwards attracted by the magnetic attraction of the air draft fan, the interface selection cover partially seals the interfaces distributed on the surface of the detection device, only one connection is reserved between the interfaces outside the detection device and the air draft tube, if the number of the air draft and alarm modules which are not arranged in the storage area is less than sixteen, the interfaces which are not connected with the air draft tube are sealed, when the gas detection sensor initially detects that the storage area contains the excessive flammable gas, the processor and the controller module electrify the electromagnet, the electromagnet is provided with magnetic force to suck the whole interface selection cover, at the moment, the air flow groove on the surface of the interface selection cover is only communicated with one interface, so that only the air extraction and alarm module communicated with the interface can normally collect the gas, and the air flow speed in the passage is accelerated due to the increase of the air inlet quantity, so that the detection device can rapidly collect the gas, carry out targeted detection on the part of the gas, record the concentration of the flammable gas in the area, facilitate the subsequent comparison, and the other interfaces are blocked by the peripheral surface of the cover body to cause the air extraction and alarm module of other parts to be incapable of collecting the gas;
and a third step of: the motor control interface selects the cover to rotate, and the conducted interfaces are switched one by one, so that the detection device can detect the air flow sucked by a single air suction and alarm module one by one, namely, each part of air in the storage area is screened one by one until all the air is screened;
fourth step: the processor and the controller module compare the concentration of inflammable gas contained in the gas of each part to obtain a storage area part corresponding to the gas with the maximum concentration, and control the alarm lamp and the buzzer on the part air extraction and alarm module to flash and buzzing alarm respectively.
Wherein, including detection device 1, equidistance set up in sixteen interfaces 3 on detection device 1 surface, fixed intercommunication in detection device 1's tuber pipe 2, set up gas detection sensor 5 and air extraction fan 6 in tuber pipe 2 inner chamber, carry out the treater and the controller module 4 of control to gas detection sensor 5 and air extraction fan 6, its characterized in that: an interface selection cover 8 is sleeved in the inner cavity of the detection device 1, a motor 7 controlled by the processor and the controller module 4 is arranged at the bottom of the inner cavity of the detection device 1, a main shaft of the motor 7 penetrates through the interface selection cover 8 and is in transmission fit with the interface selection cover 8, a lower limit clamp 11 and an upper limit clamp 12 are arranged on the inner cavity wall of the detection device 1, the interface selection cover 8 is always positioned between the lower limit clamp 11 and the upper limit clamp 12, an electromagnet 9 is further arranged at the top of the inner cavity of the detection device 1, air extraction and alarm modules 13 are distributed at equal heights around the detection device 1, the motor 7 does not rotate in an initial state, clamping teeth arranged on a main shaft of the motor 7 can be clamped with upper and lower through grooves of the interface selection cover 8, so that the interface selection cover 8 can move up and down along the main shaft of the motor 7, and can also be clamped with the through grooves of the clamping teeth and the interface selection cover 8 to drive the interface selection cover 8 to rotate;
the air extraction and alarm module 13 comprises an air extraction pipe 131, an alarm lamp 132 and a buzzer 133, wherein the alarm lamp 132 and the buzzer 133 are fixedly connected to the two sides of the air extraction pipe 131 through mounting frames, the air extraction pipe 131 is communicated with the interface 3 through an elongated hose, the air extraction pipe 131 and the alarm lamp 132 are controlled by a processor and a controller module 4, the alarm lamp 132 is a red light lamp, after being started, the alarm lamp is flashing to illuminate a lower area to cover the lower area, the concentration of inflammable gas in the area is highest, workers are prompted to check chemical articles stored in the area, and the buzzer alarm can sound outwards to play a role in guiding the workers.
The upper limit card 12 is disposed above the interface selection cover 8 and below the electromagnet 9, the upper limit card 12 is spaced from the electromagnet 9 by one millimeter in the vertical direction, ten balls 121 are annularly and equidistantly movably mounted at the bottom of the upper limit card 12, the upper limit card 12 is used for limiting the vertical movement height of the interface selection cover 8, and the interface selection cover 8 can be prevented from directly contacting the electromagnet 9.
The interface selection cover 8 comprises a cover body 81, an iron top cover 82 fixedly installed at the top of the cover body 81, an air flow groove 83 formed in the outer circumferential surface of the cover body 81, and a lace wheel 84 fixedly installed at the bottom of the cover body 81, the outer circumferential surface of the cover body 81 is in contact with the inner wall of the detection device 1, the upper limit of movement of the interface selection cover 8 in the vertical direction is that the top surface of the iron top cover 82 is in contact with a ball 121 at the bottom of the upper limit clamp 12, the lower limit of movement of the interface selection cover 8 in the vertical direction is that the bottom surface of the cover body 81 is in contact with the top surface of the lower limit clamp 11, the iron top cover 82 on the interface selection cover 8 is made of iron, so that the iron top cover 82 can be attracted by an electromagnet 9 to drive the whole interface selection cover 8 to rise, the iron top cover 82 can be in contact with the ball 121 finally, and the ball 121 can roll in cooperation with the rotation of the iron top cover 82 when the interface selection cover 8 rotates, sliding friction or other friction situations can be replaced by rolling friction, and the rotation resistance of the interface selection cover 8 is reduced.
When the interface selection cover 8 is located at the upper limit of movement in the vertical direction, the air flow groove 83 is aligned with one of the interfaces 3 and is communicated with the other interfaces 3, the peripheral surface of the cover 81 is blocked, the interface selection cover 8 is located at the lower limit of movement in the vertical direction, the interface selection cover 8 is always located below the interfaces 3, and in the initial state, the interface selection cover 8 is located at the top of the lower limit card 11 and is limited by the lower limit card 11 so as not to continue to move downwards.
Wherein, the bleeder vent of intercommunication cover 81 inner chamber and external environment has been seted up on the surface of iron top cap 82, and the gas that exhaust tube 131 collected is carried the back through the pipeline passageway and is got into from corresponding interface 3 to in the inner chamber of interface selection cover 8, preferential output is to the inner chamber space of detection device 1 of interface selection cover 8 top from the bleeder vent of iron top cap 82, and the aquatic enters into tuber pipe 2 in, and the air current can be through the detection of gas detection sensor 5.
The outer circumferential surface of the lace wheel 84 is provided with arc teeth the number of which is equal to that of the interfaces 3.
The inner cavity of the detection device 1 is also provided with an elastic wheel 10, the elastic wheel 10 comprises a sliding rod 101 movably clamped on the shell of the detection device 1, a spring 102 sleeved on the outer surface of the sliding rod 101 and a positioning wheel 103 fixedly connected to the inner end of the sliding rod 101, two ends of the sliding rod 101 are elastically supported on the positioning wheel 103 and the inner wall of the detection device 1, when the interface selection cover 8 moves vertically, the positioning wheel 103 is always in contact with the lace wheel 84, and the lace wheel 84 is relatively high in height, so that when the lace wheel 84 rises, the positioning wheel 103 cannot be separated even if sliding friction occurs between the positioning wheel 103 and the lace wheel 84.
When the interface selection cover 8 is stable and does not rotate, the body of the positioning wheel 103 is clamped between two adjacent arc teeth of the lace wheel 84, when the lace wheel 84 rotates, the positioning wheel 103 rolls along the arc teeth of the lace wheel 84 on the outer circumferential surface of the lace wheel 84, when the angle of rotation of the lace wheel 84 is in error, the positioning wheel 103 can only contact with one arc tooth, one arc tooth can not provide stable support for the positioning wheel 103, the positioning wheel 103 can move forwards to enable the arc teeth contacted with the positioning wheel 103 to rotate under the force of the spring, finally the positioning wheel 103 contacts with the other arc tooth and form force balance between the two arc teeth and the positioning wheel 103, and then the lace wheel 84 drives the whole rotation angle of the interface selection cover 8 to correct.
The air flow groove 83 is necessarily aligned with one of the connectors 3 in the vertical direction in the initial state, so that it can be ensured that after the air flow groove 83 ascends, the air flow groove 83 can be directly aligned with one of the connectors 3 in a superposition manner, and then the air flow groove 83 can conduct the connector 3 and close the other connectors 3.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for detecting inflammable gas in a dangerous chemical storage area is characterized by comprising the following steps of: the method comprises the following steps:
the first step: firstly, paving air extraction and alarm modules on the roof of a storage area, wherein the adjacent air extraction and alarm modules are paved at equal intervals, the distribution form of the finally paved air extraction and alarm modules is determined according to the house type of the civil engineering design of the storage area, a detection device is arranged at the opposite center position of the roof of the storage area, and an interface of the detection device is communicated with an air extraction pipe of the air extraction and alarm module through a slender hose;
and a second step of: the air draft fan can extract all parts of air in the storage area space, the air flow enters the air draft tube and is conveyed into the air tube through the long and thin hose and the communicated inner cavity of the detection device, the air flow flows through the air detection sensor and is detected through the air detection sensor, the processor and the controller module control the electromagnet to be electrified when inflammable gas contained in the air flow exceeds standard, the interface selection cover which is originally positioned at the lower part of the inner cavity of the detection device is upwards attracted by the electromagnet, and only one part of interfaces distributed on the surface of the detection device is blocked by the interface selection cover to be communicated;
and a third step of: the motor control interface selects the cover to rotate, and the conducted interfaces are switched one by one, so that the detection device can detect the air flow sucked by a single air suction and alarm module one by one, namely, each part of air in the storage area is screened one by one until all the air is screened;
fourth step: the processor and the controller module compare the concentration of inflammable gas contained in the gas of each part to obtain a storage area part corresponding to the gas with the maximum concentration, and control the alarm lamp and the buzzer on the part air extraction and alarm module to flash and buzzing alarm respectively.
2. The utility model provides a realize detection alarm device of hazardous chemicals storehouse district inflammable gas detection method of claim 1, includes detection device (1), equidistance set up sixteen interfaces (3) on detection device (1) surface, fixed tuber pipe (2) that communicate in detection device (1), set up gas detection sensor (5) and air exhauster (6) in tuber pipe (2) inner chamber, carry out treater and controller module (4) of control to gas detection sensor (5) and air exhauster (6), its characterized in that: the utility model discloses a card detection device, which is characterized in that an interface selection cover (8) is sleeved in an inner cavity of the detection device (1), the interface selection cover (8) comprises a cover body (81), an iron top cover (82) fixedly arranged at the top of the cover body (81) and an air flow groove (83) formed in the outer peripheral surface of the cover body (81), air holes communicated with the inner cavity of the cover body (81) and the external environment are formed in the surface of the iron top cover (82), when the interface selection cover (8) is positioned at the upper limit of the movement in the vertical direction, the air flow groove (83) is aligned and communicated with one of the interfaces (3) and the other interfaces (3) are blocked by the outer peripheral surface of the cover body (81), when the interface selection cover (8) is positioned at the lower limit of the movement in the vertical direction, the interface selection cover (8) is always positioned below the interface (3), a motor (7) controlled by a processor and a controller module (4) is arranged at the bottom of the inner cavity of the detection device (1), a main shaft of the motor (7) penetrates through the interface selection cover (8) and is in transmission fit with the interface selection cover (8), the motor (7) drives the interface selection cover (8) to rotate, the card selection cover (8) is always positioned between the upper limit stop device (12) and the upper limit stop device (11) and the lower limit device (11), the top of the inner cavity of the detection device (1) is also provided with an electromagnet (9), the electromagnet (9) is electrified by the processor and the controller module, the electromagnet (9) is provided with magnetic force to suck the whole interface selection cover (8), and the air extraction and alarm modules (13) are distributed at equal heights around the detection device (1);
the air extraction and alarm module (13) comprises an air extraction pipe (131), alarm lamps (132) and a buzzer (133), wherein the alarm lamps (132) and the buzzer (133) are fixedly connected to two sides of the air extraction pipe (131) through mounting frames, the air extraction pipe (131) is communicated with the interface (3) through an elongated hose, and the air extraction pipe (131) and the alarm lamps (132) are controlled by the processor and the controller module (4).
3. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage area according to claim 2, which is characterized in that: the upper limit clamp (12) is arranged above the interface selection cover (8) and below the electromagnet (9), the upper limit clamp (12) is separated from the electromagnet (9) by one millimeter in the vertical direction, and ten balls (121) are annularly and equidistantly movably arranged at the bottom of the upper limit clamp (12).
4. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage area according to claim 3, wherein the detection alarm device comprises the following components: the interface selection cover (8) further comprises a lace wheel (84) fixedly mounted at the bottom of the cover body (81), the outer peripheral surface of the cover body (81) is in fit contact with the inner wall of the detection device (1), the interface selection cover (8) is in contact with the balls (121) at the bottom of the upper limit clamp (12) when the upper limit of movement of the iron top cover (82) in the vertical direction is reached, and the interface selection cover (8) is in contact with the top surface of the lower limit clamp (11) when the lower limit of movement of the cover body (81) in the vertical direction is reached.
5. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage area according to claim 4, which is characterized in that: the outer peripheral surface of the lace wheel (84) is provided with arc teeth the number of which is equal to that of the interfaces (3).
6. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage area according to claim 3, wherein the detection alarm device comprises the following components: still be equipped with elastic wheel (10) in the inner chamber of detection device (1), elastic wheel (10) are including movable joint in slide bar (101) of detection device (1) casing, spring (102) of slide bar (101) surface are located to the cover, fixed connection in positioning wheel (103) of slide bar (101) inner, the both ends elastic support of slide bar (101) is in the inner wall of positioning wheel (103) and detection device (1), when interface selection cover (8) vertical removal, positioning wheel (103) contact with lace wheel (84) all the time.
7. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage zone according to claim 6, which is characterized in that: when the interface selection cover (8) is stable and does not rotate, the wheel body of the positioning wheel (103) is clamped between two adjacent arc teeth of the lace wheel (84).
8. The detection alarm device for realizing the detection method of flammable gas in the hazardous chemical substance storage zone according to claim 4 is characterized in that: the air flow channel (83) is in the initial state necessarily aligned in the vertical direction with one of the ports (3).
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