CN115508517B - Toxic and harmful gas detection device based on composite gas-sensitive material and detection method thereof - Google Patents
Toxic and harmful gas detection device based on composite gas-sensitive material and detection method thereof Download PDFInfo
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- CN115508517B CN115508517B CN202211259855.7A CN202211259855A CN115508517B CN 115508517 B CN115508517 B CN 115508517B CN 202211259855 A CN202211259855 A CN 202211259855A CN 115508517 B CN115508517 B CN 115508517B
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Abstract
The invention discloses a toxic and harmful gas detection device based on a composite gas-sensitive material and a detection method thereof. The detection method comprises the following steps: s1, mounting; s2, lowering; s3, lifting; s4, replacing. The invention can detect the toxic and harmful gas in the type aiming at the extremely severe working environment with high corrosiveness and the characteristic that the hydrogen sulfide gas is heavier than air, and can realize automatic replacement of the detection head to ensure that the detection precision is always kept at a higher level, thereby greatly reducing the risk that the toxic and harmful gas damages staff in the petroleum exploitation or mining field exploitation process.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a toxic and harmful gas detection device based on a composite gas-sensitive material and a detection method thereof.
Background
The gas-sensitive semiconductor is used as a device for detecting the composition and concentration of gas, namely a gas sensor, and is widely used for detecting various inflammable and explosive or harmful gases in factories, workshops and mines, detecting household inflammable gas leakage and the like, thereby achieving the purposes of fire prevention, explosion prevention, poisoning prevention and the like and ensuring the safety of life and property. As the core of the sensor, the gas sensitive material determines the detection and use performance of the sensor. The gas sensitive material is very sensitive to certain oxidizing gas, reducing gas or organic solvent vapor in the ambient atmosphere, and the adsorption and desorption of the gas on the surface of the material can cause obvious change of the electrical property (such as resistivity) of the material, thereby achieving the purpose of alarming. The semiconductor material is named as a semiconductor gas-sensitive material because of sensitivity to gas, and can be widely applied to the fields of detection, leakage detection, alarm, monitoring and the like of combustible gas and toxic gas.
The gas sensitive material toxic and harmful gas detector is designed to monitor the concentration of toxic and harmful gas in the ambient air, and the measuring range of the gas sensitive material toxic and harmful gas detector is from standard 0-20/50/100ppm to 10000ppm of high measuring range, and the product adopts a solid metal oxide semiconductor sensing technology, and the sensor consists of two sheets: one is a heating sheet, the other is a gas-sensitive sheet sensitive to toxic and harmful gases, and both sheets are arranged on a silicon chip in a vacuum coating mode. The heating sheet raises the working temperature of the gas-sensitive sheet to a level capable of reacting to the hydrogen sulfide gas, and the gas-sensitive sheet is provided with metal oxide, so that the change of the concentration of the hydrogen sulfide gas can be dynamically displayed. Its sensitivity may vary from one part per billion to one percent.
The existing toxic and harmful gas detection device based on the gas sensitive material is various in variety, can be used for 5-6 years or even more than 10 years in a general environment in most cases, is firm and durable and stable in work under normal environmental conditions, but the service life is greatly shortened when the device is used under extremely severe environmental conditions. In particular, in the industries such as mine exploitation and petroleum exploitation, because toxic and harmful gases such as hydrogen sulfide are heavier than air and are generally accumulated in a well bottom or a mud tank, if the toxic and harmful gases are detected by a detection device positioned above the ground, the concentration is very high, so that the detection device needs to be installed in the well or the mud tank, and the detection device is in contact with toxic and harmful gases such as highly corrosive hydrogen sulfide or waste water mud containing the toxic and harmful gases for a long time, so that corrosion damage of the detection device is further aggravated, and a certain measure is needed to improve the service durability of the toxic and harmful gases in extremely severe environments.
Patent CN211348158U discloses a hydrogen sulfide gas monitoring device for septic tank, which comprises a box body, a controller, hydrogen sulfide sensor, wireless communication module, cantilever supporting component and mobile terminal, the bottom half is connected with cantilever supporting component, hydrogen sulfide sensor fixes the top at the box, cantilever supporting component is including the cantilever that is on a parallel with the liquid level of septic tank and the guide rail of perpendicular to the liquid level of septic tank, the cantilever carries out flexible removal in the direction that is on a parallel with the liquid level of septic tank through motor drive control box, the guide rail carries out the removal at the direction of the liquid level of perpendicular to septic tank through slider and slide rail control box, hydrogen sulfide sensor passes through wireless communication module and is connected with the controller, the controller passes through wireless communication module with mobile terminal and is connected. The remote real-time monitoring can be realized, the device is convenient and fast, and the box body can move above the septic tank so as to detect the concentration of the hydrogen sulfide gas at different positions. However, the gas monitoring device also has the risk of corrosion damage when working in a high-corrosiveness environment for a long time, and the monitoring precision of toxic and harmful gases is reduced.
Disclosure of Invention
The present invention provides for addressing the above-mentioned problems.
The technical scheme of the invention is as follows:
the toxic and harmful gas detection device based on the composite gas-sensitive material comprises a water storage tank, a control console positioned at the front side of the water storage tank, and a cleaning tank positioned below the control console, wherein the cleaning tank is a tank body with a hollow inside, an opening is arranged at the bottom of the cleaning tank, and a detection component capable of moving up and down and a conversion component for replacing a main detection head in the detection component are arranged inside the cleaning tank;
the detection assembly comprises a detection shell, wherein the inside of the detection shell is provided with a gas-sensitive assembly, the main detection head is arranged at the bottom of the detection shell, the upper part of the detection shell is provided with a plurality of auxiliary detection heads, the top of the detection shell is provided with a lifting rope which sequentially penetrates through the top of the cleaning box and the control console, and the lifting rope is connected with the lifting assembly positioned in the control console;
the conversion assembly comprises a rotating cylinder which is arranged side by side with the detection shell, a rotating disc which is arranged at the bottom of the rotating cylinder and synchronously rotates with the rotating cylinder, a rotating shaft which sequentially penetrates through the top of the cleaning box and the control console is arranged at the top of the rotating cylinder, the rotating shaft is rotatably sleeved with the tail end of a telescopic rod which is arranged on a driving assembly inside the control console, the driving assembly is arranged in an empty slot which is arranged inside the control console, a rotating motor which can slide inside the empty slot is arranged at the top of the rotating shaft, and a placing cylinder for placing a standby main detection head and a storage cylinder for storing the used main detection head are symmetrically arranged at one side of the rotating cylinder.
Further, a display screen for displaying the poisonous and harmful gas detection data is arranged above the control console. The detection data can be conveniently observed through the display screen.
Further, the auxiliary detection heads are two and are respectively located on two sides of the upper portion of the detection shell, the inside of the detection shell is located below the gas-sensitive assembly, the gas-sensitive assembly comprises a hydrogen sulfide sensor, a carbon monoxide sensor and an ammonia sensor, the lifting rope is a steel wire rope, and the lifting assembly comprises a roller used for winding the lifting rope and a driving motor used for driving the roller to rotate. Lifting of the detection assembly can be achieved through the roller, the weighting block and the driving motor.
Further, the water tank bottom is equipped with 3 water pumps side by side, every the water pump bottom all is equipped with the aqueduct, and one of them aqueduct is connected the back lateral wall of wasing the case, and the left and right sides wall of wasing the case is connected respectively to other two aqueducts, and the inside pressurization shower nozzle that corresponds its rear side inner wall and left and right sides inner wall of wasing the case is equipped with a disc respectively, 3 the pressurization shower nozzle is connected with 3 aqueduct one-to-one respectively, and the water tank upper surface is equipped with the filter screen that is used for filtering the rainwater. The detection assembly can be cleaned through the water pump, and meanwhile, the collected rainwater can be utilized.
Further, detect the casing bottom and be equipped with the draw-in groove, the draw-in groove inner wall be circular setting and draw-in groove inner wall with the sealed joint of rubber circle of main detection head outer wall, the inside cover of rubber circle of main detection head outer wall is equipped with a plurality of layers hydrophobic ventilated membrane, and main detection head bottom and top all are equipped with the apron, apron center department is equipped with the through-hole, and the inside hydrophobic ventilated membrane that is equipped with of the detection casing of main detection head top, every the inside hydrophobic ventilated membrane that all is equipped with of the detection casing of vice detection head inboard. The clamping interface and the main detection head can automatically complete the butt joint in the descending process of the detection shell through the arrangement of the rubber ring.
Further, each of two sides of the rotating motor is provided with a sliding block, two sides of the upper portion of the empty slot are respectively provided with a sliding groove for enabling the sliding blocks to slide corresponding to the positions where the sliding blocks are located, the driving assembly comprises a telescopic motor for driving the telescopic rod to stretch out and draw back, the telescopic motor is fixedly arranged at the front end of the inner wall of the empty slot, and a slot for providing space for sliding of the rotating shaft is formed in the top of the cleaning box. The lifting motor and the driving assembly can slide through the arrangement of the sliding groove and the empty groove.
Further, the equidistant standing grooves used for placing the main detection heads are formed in the upper surface of the rotating disc in a surrounding mode, and water drainage ports used for avoiding water accumulation are formed in the bottoms of the standing grooves. The accumulated water during cleaning can be timely discharged through the arrangement of the water outlet.
Still further, the top of the placing cylinder is provided with a first servo motor with double output ends, the two output ends of the first servo motor are symmetrically arranged on two sides above the placing cylinder, the bottoms of the two output ends of the first servo motor are respectively provided with a connecting rod, the bottoms of the connecting rods are provided with an I-shaped movable assembly, the movable assembly comprises an upper baffle plate, a lower baffle plate and a movable rod positioned between the upper baffle plate and the lower baffle plate, the top of the movable rod is rotationally connected with an upper joint arranged in the middle of the bottom surface of the upper baffle plate, the bottom of the movable rod is rotationally connected with a lower joint arranged in the middle of the top surface of the lower baffle plate, protruding stop blocks are arranged on two side walls of the placing cylinder, which are positioned on the upper side and the lower side of the stop blocks, are respectively provided with a cavity for allowing the movable rod, the upper baffle plate and the lower baffle plate to pass through, and the periphery of the top of the main detection head is provided with a circular arc chamfer for allowing the upper baffle plate to slide in;
the storage cylinder is characterized in that a second servo motor is arranged at the top of the storage cylinder, the storage cylinder is hollow at the bottom, the output end of the second servo motor penetrates through the top of the storage cylinder and then extends to the inside of the storage cylinder, a main hook used for hooking a used main detection head is arranged at the bottom of the output end of the second servo motor, a hook is arranged on the main hook and close to the bottom of the main hook, and the main hook and the hook can penetrate through the water outlet. The main detection head can be conveniently replaced through the arrangement of the placement cylinder and the storage cylinder.
Further, a wireless communication module is arranged in the console, and the wireless communication module comprises a cloud server, a GPRS, a LoRa transmission module, a 433Mhz transmission module and a TCP/network bridge transmission module.
The method for detecting the toxic and harmful gas by using the toxic and harmful gas detection device based on the composite gas-sensitive material, which comprises the following steps of:
s1, mounting: installing a detection device near a wellhead or near a tank opening of a bottom flowback fluid mud tank for detecting toxic and harmful gas, stably installing a water storage tank on the ground, and enabling an opening at the bottom of a cleaning tank to correspond to the wellhead or the tank opening;
s2, lowering: starting the lifting assembly to lengthen the lifting rope, enabling the detection assembly to be lowered to the bottom of the well or the tank, enabling toxic and harmful gas to enter the detection shell through the main detection head and the auxiliary detection head, and starting to detect the toxic and harmful gas in the bottom of the well or the tank through starting the gas-sensitive assembly;
s3, lifting: when the main detection head is blocked by the main detection head and the auxiliary detection head due to contact with sludge at the bottom of a well or a tank after the main detection head is detected for a period of time, starting the lifting assembly to shorten the lifting rope, lifting the detection assembly back to the inside of the cleaning tank, and flushing the auxiliary detection head through water in the water storage tank;
s4, replacing: when the main detection head is blocked seriously and needs to be replaced, the driving assembly is started to drive the telescopic rod and the conversion assembly to slide backwards, the rotating motor is started to drive the rotating shaft and the rotating disc to rotate, the rotating disc corresponds to the lower part of the main detection head, the replaced main detection head is stored temporarily and replaced by the storage barrel, a new main detection head is placed by the storage barrel, and the new main detection head is installed at the bottom of the detection shell.
The beneficial effects of the invention are as follows:
(1) The toxic and harmful gas detection device provided by the invention can be suitable for detecting toxic and harmful gas in a well bottom or a slurry flowback liquid tank of petroleum exploitation or mining site exploitation aiming at a highly corrosive extremely severe working environment, can detect the toxic and harmful gas of the type in the first time aiming at the characteristic that hydrogen sulfide gas is heavier than air, has strong corrosion resistance, and can realize automatic replacement of a detection head to ensure that the detection precision is always kept at a higher level, thereby greatly reducing the risk that the toxic and harmful gas damages staff in the petroleum exploitation or mining site exploitation process.
(2) The toxic and harmful gas detection device provided by the invention can realize the placement of a standby main detection head through the matching of the conversion assembly and the placement cylinder, can realize temporary storage of the used main detection head through the matching of the conversion assembly and the storage cylinder, and can clean the auxiliary detection head through the arrangement of the water storage tank and the cleaning tank.
(3) The toxic and harmful gas detection device can realize the common toxic and harmful gases such as hydrogen sulfide, carbon monoxide and ammonia at the bottom of a well through the gas-sensitive component, and can realize cloud platform monitoring, mobile phone monitoring and wireless data transmission through the wireless communication module.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a detection device of the present invention;
FIG. 2 is a schematic view of the bottom structure of the detecting unit of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the control console of the detection device according to the present invention;
FIG. 4 is a schematic view showing the internal structure of a cleaning tank of the detection device of the present invention;
FIG. 5 is a cross-sectional view of the internal structure of the inspection device console and purge bin of the present invention;
FIG. 6 is a schematic diagram of the empty slot and the chute of the detecting device according to the present invention;
FIG. 7 is a schematic view showing the internal structure of a detection housing of the detection device of the present invention;
FIG. 8 is a schematic view of the structure of a rotating disc and a placing cylinder and a storage cylinder of the detecting device of the invention;
FIG. 9 is a schematic view showing the internal structure of a cartridge for a detecting unit according to the present invention;
FIG. 10 is a schematic view showing the internal structure of a cartridge of the detecting unit according to the present invention.
The wireless communication device comprises a 1-water storage tank, a 11-water pump, a 12-water guide pipe, a 13-filter screen, a 2-control console, a 21-roller, a 22-driving motor, a 23-empty tank, a 24-display screen, a 25-sliding groove, a 26-telescopic rod, a 27-telescopic motor, a 3-cleaning tank, a 31-pressurizing nozzle, a 32-slotting, a 4-detection shell, a 41-main detection head, a 42-auxiliary detection head, a 43-lifting rope, a 44-weighting block, a 45-clamping interface, a 46-rubber ring, a 47-hydrophobic air-permeable membrane, a 48-cover plate, a 49-through hole, a 5-air-sensitive component, a 51-hydrogen sulfide sensor, a 52-carbon monoxide sensor, a 53-ammonia sensor, a 6-rotating disc, a 61-rotating drum, a 62-rotating shaft, a 63-rotating motor, a 64-sliding block, a 65-placing groove, a 66-water outlet, a 7-placing drum, a 71-first servo motor, a 72-connecting rod, a 73-upper baffle, a 74-lower baffle, a 75-movable rod, a 76-upper connector, a 77-lower connector, a 78-connector, a 79-main connector, a 79-rotating drum, a 79-8-rotating drum, a 8-hydrogen sulfide sensor, a 8-rotating drum, a 8-main hook, a 82-wireless communication hook, a wireless communication device and a wireless communication device, and a wireless communication device.
Detailed Description
Example 1
As shown in fig. 1 and 2, the toxic and harmful gas detection device based on the composite gas sensitive material comprises a water storage tank 1, a control console 2 positioned at the front side of the water storage tank 1, and a cleaning tank 3 positioned below the control console 2, wherein the cleaning tank 3 is a tank body with a hollow inside, an opening is arranged at the bottom of the cleaning tank 3, and a detection component capable of moving up and down and a conversion component for replacing a main detection head 41 in the detection component are arranged inside the cleaning tank 3;
as shown in fig. 2 and 3, 3 water pumps 11 are arranged at the bottom of the water storage tank 1 side by side, each water pump 11 is provided with a water guide pipe 12 at the bottom, one water guide pipe 12 is connected with the rear side wall of the cleaning tank 3, the other two water guide pipes 12 are respectively connected with the left and right side walls of the cleaning tank 3, disc-shaped pressurizing spray heads 31 are respectively arranged in the cleaning tank 3 and correspond to the inner walls of the rear side and the left and right side of the cleaning tank 3, the 3 pressurizing spray heads 31 are respectively connected with the 3 water guide pipes 12 in a one-to-one correspondence manner, a filter screen 13 for filtering rainwater is arranged on the upper surface of the water storage tank 1, a display screen 24 for displaying toxic and harmful gas detection data is arranged above the control console 2, a wireless communication module 9 is arranged in the control console 2, and the wireless communication module 9 comprises a cloud server, a GPRS (general packet radio service), a LoRa (Lora) transmission module, a 433Mhz transmission module and a TCP/bridge transmission module;
as shown in fig. 4, 5 and 7, the detection assembly comprises a detection shell 4, a gas-sensitive assembly 5 is arranged in the detection shell 4, a main detection head 41 is arranged at the bottom of the detection shell 4, a plurality of auxiliary detection heads 42 are arranged at the upper part of the detection shell 4, lifting ropes 43 which sequentially penetrate through the top of the cleaning box 3 and the control desk 2 are arranged at the top of the detection shell 4, the lifting ropes 43 are connected with lifting assemblies positioned in the control desk 2, the auxiliary detection heads 42 are respectively positioned at two sides of the upper part of the detection shell 4, weight blocks 44 are arranged below the gas-sensitive assembly 5 in the detection shell 4, the gas-sensitive assembly 5 comprises a hydrogen sulfide sensor 51, a carbon monoxide sensor 52 and an ammonia sensor 53, the lifting ropes 43 are steel wire ropes, the lifting assemblies comprise a roller 21 used for winding the lifting ropes 43 and a driving motor 22 used for driving the roller 21 to rotate, a clamping interface 45 is arranged at the bottom of the detection shell 4, the inner wall of the clamping interface 45 is circularly arranged and is in sealing clamping connection with a rubber ring 46 positioned at the outer wall of the main detection head 41, a plurality of layers of water-permeable films 47 are sleeved in the rubber ring 46 positioned at the outer wall of the main detection head 41, the bottom of the main detection head 41 and the main detection head 41 is provided with a hydrophobic cover plate 48 is provided with a hydrophobic through hole 47 in the position inside the main detection shell 4, and a hydrophobic cover plate 47 is arranged at the inner side of the detection shell 4 is arranged at the position, and inside the main detection head 4 is provided with a hydrophobic cover plate 47;
as shown in fig. 5, 6 and 8, the conversion assembly comprises a rotating drum 61 arranged side by side with the detection shell 4, a rotating disc 6 positioned at the bottom of the rotating drum 61 and synchronously rotating with the rotating drum 61, a rotating shaft 62 sequentially penetrating through the top of the cleaning box 3 and the control console 2 is arranged at the top of the rotating drum 61, the rotating shaft 62 is rotatably sleeved with the tail end of a telescopic rod 26 positioned on a driving assembly positioned in the control console 2, the driving assembly is positioned in a hollow groove 23 arranged in the control console 2, a rotating motor 63 capable of sliding in the hollow groove 23 is arranged at the top of the rotating shaft 62, a placing drum 7 for placing a standby main detection head 41 and a storage drum 8 for storing the used main detection head 41 are symmetrically arranged at one side of the rotating drum 61, a sliding block 64 is respectively arranged at two sides of the rotating motor 63, a sliding groove 25 for enabling the sliding block 64 to slide is respectively arranged at two sides of the upper part of the hollow groove 23 corresponding to the position of the sliding block 64, the telescopic motor 27 is fixedly arranged at the front end of the inner wall of the hollow groove 23, a groove 32 for providing space for sliding of the rotating shaft 62 is arranged at the top of the cleaning box 3, a water storage groove 32 is arranged on the upper surface of the cleaning box 3, a water storage groove 65 is arranged at equal intervals, and a water storage groove 65 is arranged on the upper surface of the rotating disc 6 and is provided with a water storage groove 65 for placing the main detection head 41;
as shown in fig. 8 and 9, a first servo motor 71 with double output ends is arranged at the top of a placing cylinder 7, two output ends of the first servo motor 71 are symmetrically arranged at two sides above the placing cylinder 7, connecting rods 72 are arranged at the bottoms of the two output ends of the first servo motor 71, an I-shaped movable assembly is arranged at the bottom of the connecting rods 72, the movable assembly comprises an upper baffle 73, a lower baffle 74 and a movable rod 75 positioned between the upper baffle 73 and the lower baffle 74, the top of the movable rod 75 is rotationally connected with an upper joint 76 arranged in the middle of the bottom surface of the upper baffle 73, the bottom of the movable rod 75 is rotationally connected with a lower joint 77 arranged in the middle of the top surface of the lower baffle 74, protruding stop blocks 78 are arranged at the positions of two side walls of the placing cylinder 7 corresponding to the center of the movable rod 75, cavities 79 for enabling the movable rod 75, the upper baffle 73 and the lower baffle 74 to pass through are formed in two side walls of the placing cylinder 7, and circular arc-shaped chamfer angles for enabling the upper baffle 73 to slide in are formed at the periphery of the top of the main detection head 41;
as shown in fig. 8 and 10, a second servo motor 81 is arranged at the top of the storage barrel 8, the storage barrel 8 is hollow with an opening at the bottom, the output end of the second servo motor 81 penetrates through the top of the storage barrel 8 and then extends into the storage barrel 8, a main hook 82 for hooking the used main detection head 41 is arranged at the bottom of the output end of the second servo motor 81, a hook 83 is arranged on the main hook 82 near the bottom of the main hook, and both the main hook 82 and the hook 83 can penetrate through the water outlet 66.
The motor, the wireless communication module 9, the display screen 24, the hydrogen sulfide sensor 51, the carbon monoxide sensor 52, and the ammonia sensor 53 according to the present embodiment are all commercially available products.
Example 2
The embodiment provides a method for detecting toxic and harmful gases by using a toxic and harmful gas detection device based on a composite gas-sensitive material on the basis of embodiment 1, which comprises the following steps:
s1, mounting: installing a detection device near a wellhead or near a bottom flowback fluid mud tank mouth which needs to detect toxic and harmful gas, stably installing a water storage tank 1 on the ground, and enabling the bottom opening of a cleaning tank 3 to correspond to the wellhead or the tank mouth;
s2, lowering: starting the lifting assembly to lengthen the lifting rope 43, so that the detection assembly is lowered to the bottom of the well or the tank, and toxic and harmful gas enters the detection shell 4 through the main detection head 41 and the auxiliary detection head 42 and starts to detect the toxic and harmful gas in the bottom of the well or the tank by starting the gas sensitive assembly 5;
s3, lifting: when the main detection head 41 is blocked by the main detection head 41 and the auxiliary detection head 42 due to contact with sludge at the bottom of a well or a tank after a period of detection, starting a lifting assembly to shorten a lifting rope 43, lifting the detection assembly back to the inside of the cleaning tank 3, and flushing the auxiliary detection head 42 by water in the water storage tank 1;
s4, replacing: when the main detecting head 41 is blocked and needs to be replaced seriously, the driving assembly is started to drive the telescopic rod 26 and the conversion assembly to slide backwards, the rotating motor 63 is started to drive the rotating shaft 62 and the rotating disc 6 to rotate, the rotating disc 6 corresponds to the lower part of the main detecting head 41, the replaced main detecting head 41 is stored and temporarily stored through the storage barrel 8, a new main detecting head 41 is placed through the storage barrel 7, and the new main detecting head 41 is installed at the bottom of the detecting shell 4.
Example 3
This embodiment differs from embodiment 1 in that: 10 placing grooves 65 for placing the main detection heads 41 are arranged on the upper surface of the rotating disc 6 at equal intervals.
Example 4
This embodiment differs from embodiment 1 in that: the upper surface of the rotating disc 6 is provided with 6 placing grooves 65 which are used for placing the main detection heads 41 at equal intervals.
Working principle: the detection method of the present invention and the operation principle of the detection device will be further described with reference to the detection method of the toxic and harmful gas detection device in example 2.
In the lifting or returning process, the driving motor 22 is started to drive the roller 21 to rotate so as to enable the lifting rope 43 to complete lifting;
in the process of flushing, the water in the water storage tank 1 is sprayed out through the pressurizing nozzle 31 by starting the water pump 11 through the water guide pipe 12;
in the process of replacement, the telescopic motor 27 is started to push the telescopic rod 26 to slide, so that the rotating shaft 62 is driven to slide in the empty groove 23, the sliding block 64 slides in the sliding groove 25, when the lower part of the main detection head 41 corresponds to the rotating disc 6, the empty placing groove 65 corresponds to the main detection head 41 through the starting of the rotating motor 63, the driving motor 22 is started to enable the lower part of the detection assembly until the main detection head 41 contacts with the placing groove 65, the rotating disc 6 is slightly and reciprocally rotated by the starting of the rotating motor 63 to enable the main detection head 41 to fall off and fall into the placing groove 65, the detection assembly is lifted, the rotating disc 6 is rotated to the lower part of the storage barrel 8, the second servo motor 81 is started to enable the main hook 82 to penetrate through the hydrophobic breathable film 47 in the main detection head 41 and the through hole 49 of the cover plate 48, and finally the main hook 82 is lifted after penetrating through the water outlet 66, the hook 83 hooks the main detection head 41 to lift, and the main detection head 41 is temporarily stored in the storage barrel 8;
subsequently, an empty placing groove 65 is correspondingly placed below the placing cylinder 7, a plurality of standby main detection heads 41 are placed inside the placing cylinder 7 from top to bottom, a first servo motor 71 is started to enable a connecting rod 72 to slide inwards, a movable rod 75 is inclined under the action of a stop block 78 to enable two upper baffle plates 73 to slide inwards of a cavity 79, two lower baffle plates 74 slide outwards of the cavity, the lower baffle plates 74 do not block one main detection head 41 located at the lowest position, one main detection head 41 located at the lowest position falls into the placing groove 65, then the first servo motor 71 is started to enable the connecting rod 72 to slide outwards, the movable rod 75 is inclined under the action of the stop block 78 to enable the two upper baffle plates 73 to slide outwards of the cavity 79, the two lower baffle plates 74 slide inwards of the cavity, the upper baffle plates 73 do not block one main detection head 41 located at the lowest position at the moment, the main detection heads 41 fall onto the lower baffle plates 74, and then the connecting rod 72 and the movable rod 75 can be reset;
then, the rotating motor 63 is started to enable the placing groove 65 of the main detection head 41 to be newly placed on the rotating disc 6 to correspond to the lower part of the clamping interface 45, the driving motor 22 is started to enable the clamping interface 45 to be in butt joint with the main detection head 41, the outer wall rubber ring 46 of the main detection head 41 is in butt joint with the clamping interface 45, replacement and installation of the main detection head 41 are completed, and the detection steps of steps S1-S4 are continuously repeated.
Claims (8)
1. The toxic and harmful gas detection device based on the composite gas-sensitive material is characterized by comprising a water storage tank (1), a control console (2) positioned at the front side of the water storage tank (1), and a cleaning tank (3) positioned below the control console (2), wherein the cleaning tank (3) is a tank body with a hollow inside, an opening is formed in the bottom of the cleaning tank (3), and a detection component capable of moving up and down and a conversion component for replacing a main detection head (41) in the detection component are arranged in the cleaning tank (3);
the detection assembly comprises a detection shell (4), a gas-sensitive assembly (5) is arranged inside the detection shell (4), a main detection head (41) is arranged at the bottom of the detection shell (4), a plurality of auxiliary detection heads (42) are arranged on the upper portion of the detection shell (4), lifting ropes (43) penetrating through the top of the cleaning box (3) and the control console (2) in sequence are arranged at the top of the detection shell (4), the lifting ropes (43) are connected with the lifting assembly inside the control console (2), and each lifting assembly comprises a roller (21) used for winding the lifting ropes (43) and a driving motor (22) used for driving the roller (21) to rotate;
the conversion assembly comprises a rotating drum (61) which is arranged side by side with the detection shell (4), a rotating disc (6) which is positioned at the bottom of the rotating drum (61) and rotates synchronously with the rotating drum (61), a rotating shaft (62) which sequentially penetrates through the top of the cleaning box (3) and the control console (2) is arranged at the top of the rotating drum (61), the rotating shaft (62) is rotationally sleeved with the tail end of a telescopic rod (26) positioned on a driving assembly in the control console (2), the driving assembly is positioned in an empty groove (23) arranged in the control console (2), a rotating motor (63) which can slide in the empty groove (23) is arranged at the top of the rotating shaft (62), and a placing drum (7) for placing a standby main detection head (41) and a storage drum (8) for storing the used main detection head (41) are symmetrically arranged at one side of the rotating drum (61).
A plurality of placing grooves (65) for placing the main detection heads (41) are formed in the upper surface of the rotating disc (6) in an equidistant surrounding mode, and water accumulation preventing water discharge ports (66) are formed in the bottoms of the placing grooves (65);
the device comprises a placement barrel (7), wherein a first servo motor (71) with double output ends is arranged at the top of the placement barrel (7), the two output ends of the first servo motor (71) are symmetrically arranged at two sides above the placement barrel (7), connecting rods (72) are respectively arranged at the bottoms of the two output ends of the first servo motor (71), I-shaped movable components are arranged at the bottoms of the connecting rods (72), each movable component comprises an upper baffle (73), a lower baffle (74) and a movable rod (75) arranged between the upper baffle (73) and the lower baffle (74), the top of each movable rod (75) is rotationally connected with an upper joint (76) arranged at the middle of the bottom surface of the upper baffle (73), the bottom of each movable rod (75) is rotationally connected with a lower joint (77) arranged at the middle of the top surface of the lower baffle (74), protruding stop blocks (78) are arranged at the central positions of the two side walls of the placement barrel (7), the two side walls of the placement barrel (7) which are respectively provided with a movable rod (75), the upper baffle (73) and the lower baffle (74) are respectively provided with a cavity (79) for enabling the upper baffle (73) and the lower baffle (74) to penetrate through the periphery of the upper baffle (41);
the utility model discloses a storage device, including storage tube (8), main hook (82), hook (83) are equipped with at the storage tube (8) top, storage tube (8) are bottom opening cavity setting, and the output of second servo motor (81) runs through inside storage tube (8) behind storage tube (8) top, and the output bottom of second servo motor (81) is equipped with main hook (82) that are used for hooking main detection head (41) that have used, be close to its bottom position department on main hook (82) and be equipped with crotch (83), main hook (82) and crotch (83) all can pass outlet (66).
2. The toxic and harmful gas detection device based on the composite gas sensitive material according to claim 1, wherein a display screen (24) for displaying toxic and harmful gas detection data is arranged above the console (2).
3. The toxic and harmful gas detection device based on the composite gas-sensitive material according to claim 1, wherein the number of the auxiliary detection heads (42) is two, the auxiliary detection heads are respectively located at two sides of the upper portion of the detection shell (4), a weighting block (44) is arranged above the gas-sensitive component (5) in the detection shell (4), the gas-sensitive component (5) comprises a hydrogen sulfide sensor (51), a carbon monoxide sensor (52) and an ammonia sensor (53), and the lifting rope (43) is a steel wire rope.
4. The toxic and harmful gas detection device based on the composite gas-sensitive material according to claim 1, wherein 3 water pumps (11) are arranged at the bottom of the water storage tank (1) side by side, each water pump (11) is provided with a water guide pipe (12) at the bottom, one water guide pipe (12) is connected with the rear side wall of the cleaning tank (3), the other two water guide pipes (12) are respectively connected with the left side wall and the right side wall of the cleaning tank (3), disc-shaped pressurizing spray heads (31) are respectively arranged in the cleaning tank (3) corresponding to the inner wall of the rear side and the inner wall of the left side and the right side, and 3 pressurizing spray heads (31) are respectively connected with the 3 water guide pipes (12) in a one-to-one correspondence manner, and a filter screen (13) for filtering rainwater is arranged on the upper surface of the water storage tank (1).
5. The toxic and harmful gas detection device based on the composite gas-sensitive material according to claim 1, wherein a clamping port (45) is arranged at the bottom of the detection shell (4), the inner wall of the clamping port (45) is in circular arrangement, the inner wall of the clamping port (45) is in sealing clamping connection with a rubber ring (46) on the outer wall of the main detection head (41), a plurality of layers of hydrophobic breathable films (47) are sleeved inside the rubber ring (46) on the outer wall of the main detection head (41), cover plates (48) are arranged at the bottom and the top of the main detection head (41), through holes (49) are arranged at the center of the cover plates (48), the hydrophobic breathable films (47) are arranged inside the detection shell (4) above the main detection head (41), and the hydrophobic breathable films (47) are arranged inside the detection shell (4) on the inner side of each auxiliary detection head (42).
6. The toxic and harmful gas detection device based on the composite gas sensitive material according to claim 5, wherein two sides of the rotating motor (63) are respectively provided with a sliding block (64), two sides of the upper part of the empty groove (23) are respectively provided with a sliding groove (25) for enabling the sliding block (64) to slide corresponding to the position where the sliding block (64) is located, the driving assembly comprises a telescopic motor (27) for driving the telescopic rod (26) to stretch and retract, the telescopic motor (27) is fixedly arranged at the front end of the inner wall of the empty groove (23), and a groove (32) for providing a space for the sliding of the rotating shaft (62) is arranged at the top of the cleaning box (3).
7. The toxic and harmful gas detection device based on the composite gas sensitive material according to claim 1, wherein a wireless communication module (9) is arranged inside the console (2), and the wireless communication module (9) comprises a cloud server, a GPRS (general packet radio service), a LoRa transmission module, a 433Mhz transmission module and a TCP/network bridge transmission module.
8. A method for detecting toxic and harmful gas by using the toxic and harmful gas detection device based on a composite gas sensitive material according to claim 6, comprising the steps of:
s1, mounting: the detection device is arranged near a wellhead or near a bottom flowback fluid mud tank opening which needs to be subjected to toxic and harmful gas detection, the water storage tank (1) is stably arranged on the ground, and the bottom opening of the cleaning tank (3) corresponds to the wellhead or the tank opening;
s2, lowering: starting the lifting assembly to lengthen the lifting rope (43) so that the detection assembly is lowered to the bottom of a well or a tank, and enabling toxic and harmful gas to enter the detection shell (4) through the main detection head (41) and the auxiliary detection head (42) and starting to detect the toxic and harmful gas in the bottom of the well or the tank by starting the gas sensitive assembly (5);
s3, lifting: when the main detection head (41) is blocked by the main detection head (41) and the auxiliary detection head (42) due to contact with sludge at the bottom of a well or a tank after a period of detection, starting the lifting assembly to shorten the lifting rope (43), lifting the detection assembly back to the inside of the cleaning tank (3), and flushing the auxiliary detection head (42) through water in the water storage tank (1);
s4, replacing: when the main detection head (41) is blocked and needs to be replaced seriously, a telescopic motor (27) is started to enable the telescopic rod (26) to slide, so that a rotating shaft (62) is driven to slide in an empty groove (23), a sliding block (64) slides in a sliding groove (25), when the lower part of the main detection head (41) corresponds to a rotating disc (6), an air placing groove (65) corresponds to the main detection head (41) through the starting of the rotating motor (63), a driving motor (22) is started to enable the lower part of a detection assembly until the main detection head (41) is contacted with the placing groove (65), the rotating motor (63) is started to slightly reciprocate the rotating disc (6) to enable the main detection head (41) to fall off and fall into the placing groove (65), a detection assembly is lifted, the rotating disc (6) is lifted to the lower part of a storage cylinder (8), a second servo motor (81) is started to enable a main hook (82) to penetrate through a hydrophobic transmission (47) in the inside the main detection head (41) and a through hole (49) of a cover plate (48), and finally the main detection head (82) is lifted through a water draining hole (66), so that the main detection head (41) is lifted up to enable the main detection head (41) to be hooked in the storage cylinder (8);
then, an empty placing groove (65) is correspondingly placed below the placing cylinder (7), a plurality of standby main detection heads (41) are placed inside the placing cylinder (7) from top to bottom, a first servo motor (71) is started to enable a connecting rod (72) to slide inwards, under the action of a stop block (78), a movable rod (75) inclines to enable two upper baffles (73) to slide inwards of a cavity (79), two lower baffles (74) slide outwards of the cavity, the lower baffles (74) do not block one main detection head (41) located at the lowest position any more, the main detection head (41) located at the lowest position falls into the placing groove (65), then the first servo motor (71) is started to enable the connecting rod (72) to slide outwards, under the action of the stop block (78), the movable rod (75) inclines to enable the two upper baffles (73) to slide outwards of the cavity (79), the two lower baffles (74) slide inwards of the cavity, the upper baffles (73) do not block one main detection head (41) located at the lowest position any more, and the main detection heads (41) located at the lowest position fall into the connecting rod (72) at the moment, and then the movable rod (72) are reset;
then, the rotating motor (63) is started to enable the placing groove (65) of the main detection head (41) to be newly placed on the rotating disc (6) to correspond to the lower part of the clamping interface (45), the driving motor (22) is started to enable the clamping interface (45) to be in butt joint with the main detection head (41), and the outer wall rubber ring (46) of the main detection head (41) is in butt joint with the clamping interface (45), so that replacement and installation of the main detection head (41) are completed.
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| CN103645356A (en) * | 2013-11-26 | 2014-03-19 | 上海华力微电子有限公司 | Arrangement method of WAT test head |
| CN211318157U (en) * | 2019-05-07 | 2020-08-21 | 赵建雄 | Food safety detector convenient to change and detect head |
| CN211348158U (en) * | 2019-12-30 | 2020-08-25 | 格林维尔（厦门）环保科技有限公司 | Hydrogen sulfide gas monitoring device for septic tank |
| CN112630200B (en) * | 2020-11-24 | 2022-07-12 | 北京华泰诺安探测技术有限公司 | Automatic element replacement method for hazardous gas detection equipment |
| CN214503571U (en) * | 2021-01-15 | 2021-10-26 | 昆明学院 | On-line chemical analyzer |
| US11333598B1 (en) * | 2021-07-27 | 2022-05-17 | United Arab Emirates University | Material degradation monitoring system |
| CN113607888A (en) * | 2021-08-04 | 2021-11-05 | 朱银焕 | Soil greenhouse gas monitoring case with self-cleaning effect of probe |
| CN115032349A (en) * | 2022-08-11 | 2022-09-09 | 山东鸿远新材料科技股份有限公司 | Chemistry chemical industry reaction process testing arrangement |
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