CN114397239A - Device for on-line monitoring of microorganisms in fluid - Google Patents
Device for on-line monitoring of microorganisms in fluid Download PDFInfo
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- CN114397239A CN114397239A CN202111537838.0A CN202111537838A CN114397239A CN 114397239 A CN114397239 A CN 114397239A CN 202111537838 A CN202111537838 A CN 202111537838A CN 114397239 A CN114397239 A CN 114397239A
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
The invention provides a device for monitoring microorganisms in fluid on line, which comprises a water tank, wherein the water tank comprises a water inlet, a water outlet, a water return port and a filling port, and the water inlet is connected with a water inlet pipe through a filtering component and a deoxidizing component; a one-way valve is arranged in the filling port to prevent air from entering the water tank from the outside; the water outlet is communicated with the water distribution pipe through a clean water pump and a water inlet valve, the water return port is communicated with the water collection pipe through a water return valve, and the water distribution pipe is communicated with the water collection pipe through a plurality of parallel test pipes; each test tube is provided with a microbial corrosion monitoring sensor which is connected with a monitor. The invention can be used by matching with microbial corrosion monitoring sensors with various sizes and materials, and can continuously monitor microbial corrosion data of the microbial corrosion monitoring sensors under the simulated field working conditions for a long time, thereby accumulating more real and accurate original data and improving the stability of the microbial corrosion monitoring sensors.
Description
Technical Field
The invention relates to the technical field of microbial corrosion monitoring, in particular to a device for monitoring microorganisms in fluid on line.
Background
Microbial Corrosion (MIC) refers to the Corrosion or destruction of a material caused or promoted by the life activities of microorganisms in a biofilm attached to the surface of the material, including metals and non-metals. In industries such as electric power, petrochemical industry, oil field and the like in China, a water production system, a seawater system and a cooling water system all contain a large amount of microorganisms, the water quality deterioration and the pipeline corrosion can be caused by the microbial corrosion, the equipment damage is caused, the heat exchange efficiency is greatly reduced, and the enterprise production and safety are influenced. In addition, microorganisms, in addition to causing corrosion alone, also participate in or affect other types of corrosion processes. It has been reported in the petroleum industry that about 75% of oil well corrosion and 50% of buried pipeline corrosion are caused by microbial corrosion, with economic losses of up to hundreds of millions of dollars each year due to the participation of sulfate-reducing bacteria in corrosion alone.
At present, the domestic related industries usually adopt a mode of pre-adding water treatment agents to prevent the occurrence of microbial corrosion, the monitoring means is generally to take water samples regularly for microbial counting analysis, but the quantity of microorganisms in the fluid obtained by the mode is far from the quantity of microorganisms attached to the inner wall of the pipe, and the monitoring means is too extensive and lagged to know whether the water treatment agents play a role or are used excessively. In order to effectively control microbial corrosion without abusing chemical agents to cause pipeline corrosion, a microbial corrosion monitor capable of monitoring microbial corrosion data in a field pipeline through a microbial corrosion monitoring sensor is urgently needed at present, and helps workers to know the microbial corrosion condition in the pipeline in real time, so that a water treatment scheme is dynamically adjusted.
Disclosure of Invention
The object of the present invention is to provide a device for online monitoring of microorganisms in a fluid, which solves the above mentioned problems.
The invention provides a device for monitoring microorganisms in fluid on line, which comprises a water tank, wherein the water tank comprises a water inlet, a water outlet, a water return port and a filling port, and the water inlet is connected with a water inlet pipe through a filtering component and a deoxidizing component; the filling port is used for adding microorganisms or medicaments into the water tank, and is provided with a one-way valve for preventing air from entering the water tank from the outside; the water outlet is communicated with the water distribution pipe through a clean water pump and a water inlet valve, the water return port is communicated with the water collecting pipe through a water return valve, the water distribution pipe is communicated with the water collecting pipe through a plurality of parallel test pipes, and the test pipes are detachably connected with the water distribution pipe and the water collecting pipe; and each test tube is provided with a microbial corrosion monitoring sensor which is connected with a monitor, and the monitor is used for collecting, storing and uploading microbial corrosion data.
Preferably, the monitor is fixed to the header pipe.
Preferably, the monitor comprises an antenna, a shell, and a battery, a lining board and a detection circuit board which are arranged in the shell from bottom to top, wherein the detection circuit board is fixed in the shell through the lining board, and the battery is connected with the detection circuit board; the antenna penetrates through the shell and is connected with the detection circuit board; the bottom of casing is equipped with a plurality of microbial corrosion monitoring sensor interface, microbial corrosion monitoring sensor interface respectively with microbial corrosion monitoring sensor, detection circuit board is connected.
Preferably, the top of the shell is provided with a standby data interface and a standby power interface, and the standby data interface and the standby power interface are respectively connected with the detection circuit board.
Preferably, the microbial corrosion monitoring sensor comprises a first measuring test piece, a second measuring test piece and a sensor plug, wherein the first measuring test piece and the second measuring test piece are isolated and insulated by epoxy resin, and both the first measuring test piece and the second measuring test piece contact the environment to be measured; the leading-out wire of first measurement test block and the leading-out wire of second measurement test block are connected respectively the positive terminal, the negative terminal of sensor plug, the sensor plug is connected with the monitor.
Preferably, the test tube is detachably connected with the microbial corrosion monitoring sensor through a connecting joint with internal threads.
Preferably, a temperature gauge is provided on the conduit between the filter assembly and the oxygen scavenging assembly.
Preferably, a pressure gauge and a flow meter are arranged on a pipeline between the clean water pump and the water inlet valve.
Preferably, a liquid level meter and a heating temperature measuring component are further arranged in the water tank.
The invention has the following beneficial effects:
1. the water inlet of the water tank is connected with the water inlet pipe through the filtering component, so that large-particle impurities in the sample liquid can be effectively filtered, the subsequent pipeline is guaranteed not to be blocked, and the whole pipeline can smoothly run;
2. the water inlet of the water tank is connected with the water inlet pipe through the deoxidizing component, and deoxidizing can be carried out before the sample liquid enters the water tank; meanwhile, a one-way valve is arranged at the filling port, air can only flow to the filling port from the water tank in a one-way mode, the air cannot enter the water tank from the outside, when microorganisms or medicine is added, a hose is connected to the corresponding filling port, a water pump is used for jacking the one-way valve through certain pressure from the outside, and the microorganisms and the medicine are added into the water tank, so that the whole circulating pipeline and the water tank are in an anaerobic environment, and the microorganisms can survive in the circulating pipeline for a long time;
3. the testing pipe of the device is detachably connected with connecting joints with different internal thread sizes, can be matched and connected with microbial corrosion monitoring sensors with different sizes, can be matched with microbial corrosion monitoring sensors with different materials according to different monitoring requirements, and meets the type requirements of the microbial corrosion monitoring sensors under different working condition environments to the greatest extent;
4. the test pipe is detachably connected with the water distribution pipe and the water collection pipe, so that the pipeline material of the test pipe can be conveniently replaced, and a comparison experiment can be carried out on the microbial corrosion conditions of the pipeline materials made of different metal materials under the same working condition; the microbial corrosion sensors with different materials and sizes can be used for comparison experiments under the condition of adopting the pipeline material made of the same metal material, and can be replaced under the condition that the pipeline material is excessively corroded or the experiment requirements are not met, so that the detection device can be recycled for a long time;
5. the device can adjust different temperature and flow rate parameters and is used for monitoring the microbial corrosion data of the fluid at different temperatures and flow rates; the temperature and the flow rate of the detection device can be adjusted to values close to the actual working conditions on site, so that the environment of the working conditions on site can be simulated more truly, the microbial corrosion data closer to the conditions on the working conditions on site can be obtained, and the microbial corrosion data early warning algorithm corresponding to the working conditions can be obtained through analysis;
6. the device can be operated continuously, automatically and for a long time, microbial corrosion monitoring sensors of different materials and sizes on the test tube are matched, and microbial corrosion data of the microbial corrosion monitoring sensors under the simulated field working condition in a long-time, continuous monitoring, collection and recording time period are realized through the monitor, so that more real and accurate microbial corrosion data are accumulated.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus for on-line monitoring microorganisms in a fluid according to the present invention;
FIG. 2 is a schematic view of a monitor;
FIG. 3 is a schematic diagram of the structure of a microbial corrosion monitoring sensor.
Element number description:
1 water inlet pipe
2 Filter assembly
3 thermometer
4 oxygen scavenging assembly
5 filling port
6 water return valve
7 monitor
701 shell
702 detecting circuit board
703 battery
704 liner plate
705 spare data interface
706 antenna
707 microbial corrosion monitoring sensor interface
708 spare power supply interface
8 water collecting pipe
9 first test tube
10 second test tube
11 third test tube
12 fourth test tube
13 support
14 inlet valve
15 flow meter
16 pressure gauge
17 clean water pump
18 level meter
19 Water tank
20 drainage outlet
21 shunt pipe
22 microbial corrosion monitoring sensor
2201 sensor socket
2202 epoxy resin
2203 first measuring strip
2204 second measuring strip
23 shielded cable
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in FIG. 1, the present invention provides an apparatus for on-line monitoring of microorganisms in a fluid, which comprises a water tank 19, wherein the water tank 19 can be made of a metal material with good corrosion resistance, such as 0Cr18Ni9Ti (304# stainless steel) by integral forging, and is used for storing various fluid media with different compositions. The water tank 19 includes a water inlet, a water outlet, a water return port, and a filling port 5.
The water inlet is connected with the water inlet pipe 1 through the filtering component 2 and the deoxidizing component 4, and an operator adds fluid for experiments into the water tank 19 through the water inlet pipe 1. The filling opening 5 is used for adding microorganisms or medicaments into the water tank 19, and in order to prevent air from entering the water tank 19 from the outside, a one-way valve is arranged in the filling opening 5, and air can only flow to the filling opening 5 from the water tank 19 in one way. Under the combined action of the one-way valve and the oxygen removing component 4, the device of the invention is in an anaerobic environment, and microorganisms can survive in the device for a long time.
The water outlet is communicated with a water distribution pipe 21 through a clean water pump 17 and a water inlet valve 14, the water return port is communicated with a water collecting pipe 8 through a water return valve 6, the water distribution pipe 21 is communicated with the water collecting pipe 8 through a plurality of test pipes arranged in parallel, and the test pipes are detachably connected with the water distribution pipe 21 and the water collecting pipe 8. Each test tube can be detachably connected with the connecting joint with different internal thread sizes and detachably connected with the microbial corrosion monitoring sensor 22 through the connecting joint, so that the test tubes are matched with the microbial corrosion monitoring sensors 22 with different sizes. Every test tube all easily dismouting, the test tube that different materials were made is changed according to the on-the-spot pipeline material to the operating personnel of being convenient for, can adopt the test tube that transparent ya keli material was made preferentially, is convenient for like this observe the appearance of intraductal microorganism after the surperficial gathering of microbial corrosion monitoring sensor 22 to change under the condition that pipeline material corrodes overweight or other unsatisfied experimental demands, guarantee that detection device can be long-time, recycle.
In the specific implementation, the number of the test tubes is four, and the test tubes are respectively a first test tube 9, a second test tube 10, a third test tube 11 and a fourth test tube 12. The pipe diameter specifications of the first test pipe 9 and the second test pipe 10 are both DN100 and are used for simulating a field pipeline with a small pipe diameter, and the pipe diameter specifications of the third test pipe 11 and the fourth test pipe 12 are both DN150 and are used for simulating a field pipeline with a large pipe diameter. The water return valve 6 and the water inlet valve 14 on the water distribution pipe 21 and the water collection pipe 8 can be used for communicating or blocking the test pipe with other pipelines. The technical personnel in the field can also set different numbers of test tubes with different tube diameters according to the requirements.
The microbial corrosion monitoring sensor 22 is connected with the monitor 7, and the monitor 7 is used for collecting, storing and uploading microbial corrosion data. As shown in fig. 1 and 2, the monitor 7 includes an antenna 706, a housing 701, and a battery 703, a backing 704, and a detection circuit board 702 disposed inside the housing 701 from bottom to top. The lining board 704 is fixed in the housing 701 by a stud and a screw, the detection circuit board 702 is fixed on the lining board 704, and the battery 703 is connected with the detection circuit board 702 by a lead. The upper end of the antenna 706 penetrates through the housing 701 through a sealed interface, and the lower end is connected to the inside of the jack of the detection circuit board 702 through a wire. The bottom of the shell 701 is provided with a plurality of microbial corrosion monitoring sensor interfaces 707, the number of the microbial corrosion monitoring sensor interfaces 707 is the same as that of the microbial corrosion monitoring sensors 22, the microbial corrosion monitoring sensor interfaces 707 correspond to the microbial corrosion monitoring sensors 22 one by one, and the microbial corrosion monitoring sensor interfaces 707 are respectively connected with the microbial corrosion monitoring sensors 22 and the detection circuit board 702 through wires. Preferably, the top of the housing 701 is further provided with a backup data interface 705 and a backup power interface 708, and the backup data interface 705 and the backup power interface 708 are respectively connected with the detection circuit board 702. Monitor 7 may be configured to be secured to manifold 8 in accordance with one embodiment of the present invention, and one skilled in the art may also be able to configure monitor 7 in other locations that facilitate connection to microbial corrosion monitoring sensor 22, as desired.
As shown in fig. 1 and fig. 3, the microbial corrosion monitoring sensor 22 includes a first measurement test strip 2203, a second measurement test strip 2204 and a sensor plug 2201, the first measurement test strip 2203 and the second measurement test strip 2204 are isolated and insulated by an epoxy resin 2202, and both the first and second test strips contact the environment to be measured, i.e., the inside of the test tube. The outgoing line of the first measurement test piece 2203 and the outgoing line of the second measurement test piece 2204 are respectively connected with the positive terminal and the negative terminal of the sensor plug 2201, and the sensor plug 2201 is connected with the microbial corrosion monitoring sensor interface 707 of the monitor 7 through the shielded cable 23.
As shown in fig. 1, a temperature gauge 3 is provided on the line between the filter assembly 2 and the oxygen removal assembly 4, and a pressure gauge 16 and a flow meter 15, preferably a flow rate monitor, are provided on the line between the clean water pump 17 and the water inlet valve 14. The water tank 19 is also internally provided with a liquid level meter 18 and a heating temperature measuring component. The device is convenient for monitoring and adjusting parameters such as fluid temperature, pressure, flow and the like in the device, so that the internal environment of the device is closer to the actual working condition.
In order to ensure the stability of the device, the invention is also provided with a bracket 13 at the end parts of the flowmeter 15 and the water distribution pipe 21, and the lower end of the bracket 13 is positioned on the same horizontal plane with the bottom of the water tank 19. A drain port 20 is provided at the bottom of the tank 19 to facilitate the drainage of the fluid therein for fluid exchange.
The experimental preparation and operation process of the invention are as follows:
the fluid used for the experiment is added into the water tank 19 through the water inlet pipe 1, and the fluid can be sample liquid taken from a field pipeline, test sample liquid or corresponding experimental fluid prepared in a laboratory. After the fluid passes through the filter assembly 2, the large particulate components are filtered out and then deoxygenated by the deoxygenation assembly 4 and finally into the water tank 19.
Opening the filling opening 5, connecting a hose with a corresponding diameter size in the one-way valve, applying a certain pressure through a water pump to jack the one-way valve, adding microorganisms with culture medium, which are cultivated for 2-3 days in advance, into the water tank 19 through the hose, removing the hose, covering the sealing cover on the one-way valve again, and sealing the filling opening 5.
Installing a plurality of microbial corrosion monitoring sensors 22 to be used in the experiment on a test tube, connecting the microbial corrosion monitoring sensors 22 with a monitor 7, opening the water return valve 6 and the water inlet valve 14, opening the clean water pump 17, and controlling the flow of the clean water pump 17 according to the indication of the flow meter 15, wherein the flow can refer to the flow value of the field working condition environment. The experimental preparation and the operation process are finished.
Along with the microorganism constantly gathers on the measuring test piece of microbial corrosion monitoring sensor 22, the microbial polarization feedback current data that monitor 7 gathered is the growth trend until exceeding preset early warning value, and monitor 7 carries out the early warning, and accessible this moment and the same mode of adding the microorganism add the medicament in to water tank 19, then continue to monitor the bactericidal effect of medicament.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The device for monitoring microorganisms in fluid on line is characterized by comprising a water tank (19), wherein the water tank (19) comprises a water inlet, a water outlet, a water return port and a filling port (5), and the water inlet is connected with a water inlet pipe (1) through a filtering component (2) and a deoxidizing component (4); the filling port (5) is used for adding microorganisms or medicaments into the water tank (19), and a one-way valve is arranged to prevent air from entering the water tank (19) from the outside; the water outlet is communicated with a water distribution pipe (21) through a clean water pump (17) and a water inlet valve (14), the water return port is communicated with a water collection pipe (8) through a water return valve (6), the water distribution pipe (21) is communicated with the water collection pipe (8) through a plurality of test pipes arranged in parallel, and the test pipes are detachably connected with the water distribution pipe (21) and the water collection pipe (8); be equipped with a microbial corrosion monitoring sensor (22) on every test tube, microbial corrosion monitoring sensor (22) are connected with monitor (7), monitor (7) are used for gathering, storage and upload microbial corrosion data.
2. The device according to claim 1, characterized in that the monitor (7) is fixed to the collector pipe (8).
3. The device according to claim 1, characterized in that the monitor (7) comprises an antenna (706), a housing (701), and a battery (703), a lining board (704) and a detection circuit board (702) which are arranged in the housing (701) from bottom to top, wherein the detection circuit board (702) is fixed in the housing (701) through the lining board (704), and the battery (703) is connected with the detection circuit board (702); the antenna (706) penetrates through the shell (701) and is connected with the detection circuit board (702); the bottom of casing (701) is equipped with a plurality of microorganism corrosion monitoring sensor interface (707), microorganism corrosion monitoring sensor interface (707) respectively with microorganism corrosion monitoring sensor (22), detection circuit board (702) are connected.
4. The device according to claim 3, characterized in that a spare data interface (705) and a spare power interface (708) are arranged on the top of the housing (701), and the spare data interface (705) and the spare power interface (708) are respectively connected with the detection circuit board (702).
5. The device according to claim 1, wherein the microbial corrosion monitoring sensor (22) comprises a first measurement test strip (2203), a second measurement test strip (2204) and a sensor plug (2201), the first measurement test strip (2203) and the second measurement test strip (2204) are isolated and insulated by epoxy resin (2202), and both test strips contact the environment to be measured; the outgoing line of the first measuring test piece (2203) and the outgoing line of the second measuring test piece (2204) are respectively connected with the positive end and the negative end of the sensor plug (2201), and the sensor plug (2201) is connected with the monitor (7).
6. The device according to claim 1, wherein the test tube is removably connected to the microbial corrosion monitoring sensor (22) by a connection joint having an internal thread.
7. The device according to claim 1, characterized in that a thermometer (3) is provided on the line between the filter module (2) and the oxygen removal module (4).
8. Device according to claim 1, characterized in that a pressure gauge (16) and a flow meter (15) are arranged on the line between the clean water pump (17) and the inlet valve (14).
9. The device according to claim 1, characterized in that a liquid level meter (18) and a heating temperature measuring component are arranged in the water tank (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111537838.0A CN114397239A (en) | 2021-12-15 | 2021-12-15 | Device for on-line monitoring of microorganisms in fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111537838.0A CN114397239A (en) | 2021-12-15 | 2021-12-15 | Device for on-line monitoring of microorganisms in fluid |
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| CN114397239A true CN114397239A (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111537838.0A Pending CN114397239A (en) | 2021-12-15 | 2021-12-15 | Device for on-line monitoring of microorganisms in fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452699A (en) * | 2022-10-14 | 2022-12-09 | 西南石油大学 | Microbial corrosion recognition and corrosion inhibitor efficiency evaluation system device |
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| CN112033882A (en) * | 2020-09-02 | 2020-12-04 | 湘潭大学 | Method and device for testing microbial corrosion of ocean tidal zone |
| CN112557293A (en) * | 2020-12-25 | 2021-03-26 | 中国科学院海洋研究所 | Ecological experiment cabin for small marine corrosion research |
| CN112782069A (en) * | 2021-01-27 | 2021-05-11 | 中国科学院金属研究所 | Pipeline microbial corrosion monitor |
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2021
- 2021-12-15 CN CN202111537838.0A patent/CN114397239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209296690U (en) * | 2018-11-29 | 2019-08-23 | 山西太钢不锈钢股份有限公司 | A kind of sealing and circulating water system medicament evaluation experimental provision |
| CN111398526A (en) * | 2020-03-31 | 2020-07-10 | 广东省石油与精细化工研究院 | Recirculated cooling water monitoring heat transfer system |
| CN112033882A (en) * | 2020-09-02 | 2020-12-04 | 湘潭大学 | Method and device for testing microbial corrosion of ocean tidal zone |
| CN112557293A (en) * | 2020-12-25 | 2021-03-26 | 中国科学院海洋研究所 | Ecological experiment cabin for small marine corrosion research |
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| CN115452699A (en) * | 2022-10-14 | 2022-12-09 | 西南石油大学 | Microbial corrosion recognition and corrosion inhibitor efficiency evaluation system device |
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