CN115078234B - Microbial corrosion test device capable of simulating hydraulic conditions of gravity flow sewage pipeline - Google Patents
Microbial corrosion test device capable of simulating hydraulic conditions of gravity flow sewage pipeline Download PDFInfo
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- CN115078234B CN115078234B CN202210485146.4A CN202210485146A CN115078234B CN 115078234 B CN115078234 B CN 115078234B CN 202210485146 A CN202210485146 A CN 202210485146A CN 115078234 B CN115078234 B CN 115078234B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
Abstract
The invention provides a microbial corrosion test device capable of simulating hydraulic conditions of a gravity flow sewage pipeline, which comprises: the corrosion chamber is used for simulating a corrosion environment in the sewage pipeline; the gravity flow simulation part is positioned in the corrosion cabin, and the gravity flow simulation part and the bottom of the corrosion cabin are inclined at a preset angle and used for providing a water head difference and simulating gravity flow in a real sewage pipeline; the microbial corrosion part is used for enabling the corrosion cabin to be in the conditions of proper temperature, humidity and concentration of hydrogen sulfide gas, and providing a function of setting a corrosion environment so as to realize simulated corrosion of sewage pipelines in different climatic environment regions; the gas collecting part is connected with the corrosion cabin and is used for collecting hydrogen sulfide gas in the corrosion cabin each time the corrosion cabin door is opened; and the sewage environment simulation part is used for adjusting the sewage liquid phase environment in the corrosion cabin and investigating the influence of water quality and hydraulic condition factors on the corrosion of the sewage pipeline. The invention can examine the influence rule of the flow velocity on the corrosion behavior of the sewage pipeline.
Description
Technical Field
The invention relates to the technical field of urban drainage pipe network health evaluation, in particular to a microbial corrosion test device capable of simulating the hydraulic conditions of a gravity flow sewage pipeline.
Background
The urban drainage system is like the veins of a city, is responsible for conveying domestic wastewater and rainwater to the drainage tail end of a sewage treatment plant or a river channel and the like, and forms an urban life line together with arterial pipelines such as municipal water supply, heat supply, gas and the like, thereby being an important component of urban infrastructure. According to the detection results of the prior sewage pipeline, microorganism Induced Concrete Corrosion (MICC) is the most common disease in the sewage pipeline. Urban environmental pollution, potential urban risks and huge pipeline detection and repair costs derived from MICC are challenges facing large cities throughout the world. Therefore, the current academic circles are dedicated to research on corrosion degradation rules of traditional pipes, and evaluate the corrosion resistance of the novel pipes and the repair materials, so that the problem of corrosion of the sewage pipeline is fundamentally solved or improved. The search for a test method capable of simulating the real sewage pipeline 100MICC is a key technical basis for developing the above research.
The microbial cabin corrosion method is a common sewage pipeline simulated corrosion method, and can accelerate the generation of biological sulfuric acid on the surface of a test piece suspended or semi-immersed in the biological sulfuric acid by providing a suitable living environment for microbes so as to fulfill the aim of reproducing the MICC of a sewage system. However, the microbial cabin corrosion method can only examine the corrosion behavior of concrete in a static sewage liquid environment, and cannot simulate the flowing hydraulic conditions in a real sewage system. While related studies indicate that sewage flow is a non-negligible contributor to MICC.
Disclosure of Invention
The invention aims to solve the technical problem of providing a microbial corrosion test device capable of simulating the hydraulic conditions of a gravity flow sewage pipeline so as to make up for the short plate that the conventional microbial corrosion cabin cannot examine the flow conditions of sewage.
In order to solve the technical problems, the invention provides the following technical scheme:
a microbial corrosion test apparatus for simulating hydraulic conditions in a gravity flow sewer line, the apparatus comprising:
the corrosion chamber is used for providing a corrosion place for the sewage pipeline;
the gravity flow simulation part is positioned in the corrosion cabin, the gravity flow simulation part and the bottom of the corrosion cabin are inclined at a preset angle, and the gravity flow simulation part is used for providing gravity flow for the sewage pipeline;
the microbial corrosion part takes the corrosion cabin as a theme and is used for simulating a microbial corrosion environment above the liquid level in a real sewage system;
the gas collecting part is connected with the corrosion cabin and is used for collecting hydrogen sulfide gas in the corrosion cabin each time the corrosion cabin door is opened;
and the sewage environment simulation part is used for adjusting the sewage liquid phase environment in the corrosion cabin, comprises sewage flow velocity, flow and sewage quality, and is used for inspecting the influence of water quality and hydraulic condition factors on the corrosion of the sewage pipeline.
In an alternative embodiment, the gravity flow simulation section comprises a simulation canal;
the simulation pipe channel is positioned in the corrosion cabin, and the simulation pipe channel and the bottom of the corrosion cabin are inclined at a preset angle.
In an alternative embodiment, the simulated canal has a semicircular cross section, and the preset angle between the highest side and the lowest side of the simulated canal is 2-10%.
In an optional embodiment, the gravity flow simulation part further comprises a circulating water control part;
the circulating water control part is connected with the corrosion cabin and is used for providing a circulating path for the simulation pipe duct to form gravity flow.
In an optional embodiment, the circulating water control part comprises a water inlet pipe, a water outlet pipe and a circulating pump;
one end of the water inlet pipe is connected with the first end of the corrosion cabin, the other end of the water inlet pipe is connected with the water outlet pipe, the circulating pump is located on the water outlet pipe, and the first end is opposite to the second end.
In an alternative embodiment, the microbial corrosion section comprises a temperature monitoring section, the temperature monitoring section is positioned at the bottom of the simulated pipe duct, and the temperature monitoring section is used for monitoring and controlling the ambient temperature in the corrosion chamber.
In an optional embodiment, the microbial corrosion part further comprises a humidity control part, and the humidity control part is used for controlling the environmental humidity in the corrosion cabin.
In an optional embodiment, the microbial corrosion part comprises a hydrogen sulfide gas concentration monitoring part, the hydrogen sulfide gas concentration monitoring part is connected with the corrosion chamber, and the hydrogen sulfide gas concentration monitoring part is used for monitoring and controlling the concentration of hydrogen sulfide in the corrosion chamber.
In an optional embodiment, the gas collecting part comprises a gas inlet pipe, a gas outlet pipe and the gas collecting part, the gas inlet pipe is connected with the first end of the etching chamber, the gas outlet pipe is connected with the second end of the etching chamber, and the gas collecting part is connected with the gas outlet pipe.
In an alternative embodiment, the test rig further comprises a sealing cover, which is located on top of the corrosion chamber.
The technical scheme of the invention has the following beneficial effects:
according to the test device provided by the embodiment of the invention, when the test is passed, the concrete test piece is placed in the corrosion cabin, the gravity flow simulation part provides a flowing sewage environment, and the microbial corrosion part provides a simulated sewage system gas-phase microbial corrosion environment for the concrete test piece; collecting excessive hydrogen sulfide gas in the cabin after the microbial corrosion through a gas collecting part; the flow speed, the flow and the water quality are adjusted by the sewage environment simulation part. According to the embodiment of the invention, the hydraulic environment in the sewage system is better reduced through the test device, so that the influence rule of the flow velocity on the corrosion behavior of the sewage pipeline can be inspected, meanwhile, the device can be used for simulating the sewage pipeline environment under different climates and different hydraulic conditions, and the influence of single factor or multi-factor coupling action on the corrosion behavior of the sewage pipeline can be inspected.
Drawings
FIG. 1 is a schematic structural diagram of a microbial corrosion test apparatus capable of simulating hydraulic conditions of a gravity flow sewage pipeline according to an embodiment of the present invention,
fig. 2 is a side view of fig. 1.
[ reference numerals ]
1. A corrosion chamber; 2. simulating a pipe duct; 3. a water inlet pipe; 4. a water outlet pipe; 5. a circulation pump; 6. a sewage renewal container; 7. a constant temperature water tank; 8. an intelligent humidifier; 9. a toxic gas collecting section; 10. a sealing cover; 11. concrete test pieces.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The following describes in detail a microbiological corrosion test apparatus capable of simulating hydraulic conditions of a gravity flow sewage pipeline according to the present invention with reference to the accompanying drawings and specific embodiments. Also, it is to be understood that the following examples are preferred and preferred embodiments, and that other alternatives may be devised by those skilled in the art in light of the teaching herein; also, the drawings are only for purposes of more particularly describing embodiments and are not intended to limit the invention in any way.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In general, terms may be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Additionally, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead allow for the presence of other factors not necessarily explicitly described, depending at least in part on the context.
As used herein, the term "nominal" refers to a desired or target value, and a range of values above and/or below the desired value, of a characteristic or parameter set during a design phase of a production or manufacturing process for a component or process operation. The range of values may be due to slight variations in manufacturing processes or tolerances. As used herein, the term "about" indicates a value of a given amount that may vary based on the particular technology node associated with the subject semiconductor device. The term "about" may indicate a given amount of a value that varies, for example, within 5% -15% of the value (e.g., ± 5%, ± 10% or ± 15% of the value), based on the particular technology node.
It is understood that the meaning of "on 8230; \8230on," \8230, above "and" on 82308230; \823030, above "in the present disclosure should be interpreted in the broadest manner such that" on 8230; \8230above "means not only" directly on "something" but also on "something with the meaning of intervening features or layers therebetween, and" on 8230; \8230on "or" on 8230, above "not only means" on "or" above "something, but also may include the meaning thereof" on "or" above "something with no intervening features or layers therebetween.
Furthermore, spatially relative terms such as "below 823030; below", "lower", "above", "upper" and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature or features, as illustrated in the figures. Spatially relative terms are intended to encompass different orientations in use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a microbial corrosion test apparatus capable of simulating hydraulic conditions of a gravity flow sewage pipeline according to an embodiment of the present invention, and fig. 2 is a side view of fig. 1. The device includes: the corrosion chamber 1, the gravity flow simulation part, the gas collection part 9 and the sewage environment simulation part. The corrosion cabin 1 is used for providing a place for simulating a sewage system corrosion environment for the concrete test piece 11; the gravity flow simulation part is positioned in the corrosion cabin 1, the gravity flow simulation part and the bottom of the corrosion cabin 1 are inclined at a preset angle, and the gravity flow simulation part is used for providing a water head difference and simulating gravity flow in a real sewage pipeline; the microbial corrosion part takes a corrosion cabin 1 as a main body and is used for setting the corrosion cabin 1 to be in a suitable temperature, humidity and hydrogen sulfide gas concentration condition, so that the function of setting a corrosion environment is provided, and simulated corrosion of sewage pipelines in different climatic environment regions is realized; the gas collecting part 9 is connected with the corrosion chamber 1 and is used for collecting hydrogen sulfide gas in the corrosion chamber 1 when the door of the corrosion chamber 1 is opened each time; the sewage environment simulation part is used for adjusting the sewage liquid phase environment in the corrosion cabin 1, including sewage flow velocity, flow and sewage quality, and is used for inspecting the influence of water quality and hydraulic condition factors on the corrosion of a sewage pipeline.
The test device provided by the embodiment of the invention at least has the following beneficial effects:
when the test device provided by the embodiment of the invention passes the test, the concrete test piece 11 is placed in the corrosion cabin 1, a sewage flow condition is created by the gravity flow simulation part, and a sewage corrosion environment is provided for the concrete test piece 11 by the microorganism corrosion part; hydrogen sulfide gas in the cabin is absorbed through the gas collecting part 9 before the cabin door is opened each time; the flow, the flow velocity and the sewage quality are set by a sewage environment simulation part according to the real environment of the researched sewage pipeline. According to the embodiment of the invention, the hydraulic environment in the sewage system is better reduced through the test device, so that the influence rule of the flow velocity on the corrosion behavior of the concrete material in the sewage system can be inspected, the sewage pipeline environments under different climates and different hydraulic conditions can be simulated, and the influence of single factors or multi-factor coupling effects such as temperature, humidity, hydraulic conditions, hydrogen sulfide concentration and the like on the corrosion behavior of the concrete material in the sewage system can be inspected.
It should be noted that the concrete sample 111 provided by the embodiment of the present invention is a sewage pipeline.
The test device provided by the embodiments of the present invention will be further explained and described below by way of alternative embodiments.
In an alternative embodiment, the gravity flow simulation section includes a simulation canal 2;
the simulation pipe duct 2 is located in the corrosion cabin 1, and the simulation pipe duct 2 and the bottom of the corrosion cabin 1 are inclined at a preset angle.
The influence of the sewage flow rate on the MICC is very complicated, on one hand, when the flow rate is high, the biofilm on the concrete surface below the liquid level is thin, so that the living environment of anaerobic microorganisms below the liquid level is small, and the hydrogen sulfide generated by sulfate reduction by the anaerobic microorganisms is reduced; on the other hand, sulfuric acid is fast and easily causes obvious turbulence, which is beneficial to overflow of hydrogen sulfide gas on the surface of sewage, thereby providing more production raw materials for producing sulfuric acid by aerobic microorganisms above the liquid level, and promoting corrosion. In addition, changes in the sewage level can accelerate corrosion in the area for cyclic soaking and scouring of the corrosion layer by concrete near the liquid level. According to the embodiment of the invention, the simulation pipe channel 2 is inclined at a preset angle with the bottom of the corrosion cabin 1, further, the highest inclined side is a sewage inlet, the lowest inclined side is a sewage outlet, and the flow speed and flow are set by the circulating water control part, so that the service environment of a concrete material in a sewage pipeline can be reduced more truly, and the corrosion behavior in a real sewage system is explored.
In an alternative embodiment, the simulated canal 2 has a semicircular cross section, and the preset angle between the highest side and the lowest side of the simulated canal 2 is 2-10%.
The simulation pipe duct 2 provided by the embodiment of the invention is of a semicircular cross section, and it should be noted that when the embodiment of the invention is applied to carry out a corrosion test, the concrete test piece 11 to be researched is vertically placed in the simulation pipe duct 2, wherein part of the concrete test piece 11 is submerged by sewage, and part of the concrete test piece 11 is exposed in the air above the sewage liquid level, so that the microbial sulfuric acid corrosion behavior of the concrete above the sewage liquid level can be inspected, and the corrosion degradation behavior of the concrete by the sewage below the sewage liquid level can be researched.
Further, the preset angles of the highest side and the lowest side of the simulated pipe duct 2 are 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% and 10%. The preset angle between the highest side and the lowest side of the simulated pipe duct 2 can be determined according to the simulated condition, and the preset angle is not limited thereto in the embodiment of the invention.
In an optional embodiment, the gravity flow simulation part further comprises a circulating water control part;
the circulating water control part is connected with the corrosion cabin 1 and is used for providing a circulating path for the simulation pipe duct 2 so as to form gravity flow.
The flow speed and the liquid level of the sewage in the corrosion chamber 1 can be controlled by the circulating water control part, and the flow rate, the flow speed and the water quality of the sewage in the corrosion chamber 1 are set according to the actual environment and the weather season of a sewage pipeline research object and the service operation state of the sewage pipeline research object, so that the service environment of the concrete pipe in a sewage system is reproduced.
In an alternative embodiment, the circulating water control part comprises a water inlet pipe 3, a water outlet pipe 4 and a circulating pump 5;
one end of the water inlet pipe 3 is connected with the first end of the corrosion chamber 1, the other end of the water inlet pipe is connected with the water outlet pipe 4, the circulating pump 5 is positioned on the water outlet pipe 4, and the first end is opposite to the second end.
According to the embodiment of the invention, the water outlet pipe 4 is connected with the water inlet pipe 3, so that sewage can be recycled, and the use amount of sewage is reduced. Further, valves may be provided on the inlet pipe 3 and the outlet pipe 4 to close the valves when the sewage is renewed.
In an optional embodiment, in the sewage refreshing container 6 provided in the embodiment of the present invention, the sewage refreshing container 6 is connected to the water outlet pipe 4, a valve is disposed between the sewage refreshing container 6 and the water outlet pipe 4, and when the sewage needs to be replaced or the microbial solution needs to be replaced, the valve disposed between the water outlet pipe 4 and the sewage refreshing container 6 may be opened to place the liquid in the corrosion chamber 1 into the sewage refreshing container 6. As an example, the material of the sewage renewing container 6 may be a container made of a corrosion-resistant material.
In an alternative embodiment, the microbial corrosion section comprises a temperature monitoring section located at the bottom of the simulated canal 2 for maintaining a predetermined temperature in the corrosion chamber 1.
Further, the temperature monitoring part provided by the embodiment of the invention comprises a constant temperature water tank 7 and a temperature sensor, wherein the constant temperature water tank 7 is placed below the simulation canal 2 to provide a temperature control function for the simulation canal 2. The temperature sensor is connected with the simulation pipe duct 2. It can be understood that the growth of microorganisms is closely related to the environmental temperature, and the temperature in the corrosion chamber 1 can be monitored in real time by arranging the temperature sensor in the embodiment of the invention, the temperature in the corrosion chamber 1 is transmitted to the control part by the temperature sensor, and the temperature of the constant temperature water tank 7 is controlled by the control part, so that the temperature of the constant temperature water tank 7 is ensured to be within the preset range.
Further, temperature sensor can constantly acquire the temperature in the simulation canal 2, through current temperature and the temperature of predetermineeing relatively, when current temperature is higher than the temperature of predetermineeing, control constant temperature water tank 7 cooling, when current temperature is less than the temperature of predetermineeing, control constant temperature water tank 7 intensifies. Further, the preset temperature may be determined according to the actual service environment of the sewage pipe under study, i.e. the preset temperatures of different gradients may be set according to different climates and different seasons.
In an alternative embodiment, the microbial corrosion simulation unit further comprises a humidity control unit for controlling the humidity of the environment in the corrosion chamber 1.
As an example, the humidity control part may be an intelligent humidifier 8, the intelligent humidifier 8 transmits humidity data in the corrosion chamber 1 to the control part, and the control part controls the intelligent humidifier 8 to be turned on and off, so as to control the humidity in the corrosion chamber 1. Further, the humidity in the simulation canal 2 can be constantly obtained to intelligent humidifier 8, and through current humidity of comparison and preset humidity, when current humidity is less than preset humidity, the valve of control air inlet is opened, injects water smoke into corrosion chamber 1. Further, the preset humidity may be determined according to the actual service environment of the sewage pipe under study.
The embodiment of the invention can simulate the pipeline environment in different areas, climatic conditions and seasons by setting different combinations of temperature and humidity.
In an alternative embodiment, the gas collecting part 9 comprises a gas inlet pipe, a gas outlet pipe is connected with the gas collecting part 9, the gas inlet pipe is connected with a first end of the etching chamber 1, the gas outlet pipe is connected with a second end of the etching chamber 1, and the gas collecting part 9 is connected with the gas outlet pipe.
Anaerobic microorganisms can generate hydrogen sulfide gas in the process of propagation and growth, the hydrogen sulfide gas can overflow the water surface after being saturated, and is dissolved in the wet surface of the concrete above the sewage liquid level, and further sulfuric acid is generated under the biotransformation of aerobic microorganisms, so that the corrosion threat to the concrete is caused. In the test, the cabin door needs to be opened periodically to detect the concrete test piece 11, and in order to avoid the threat of the hydrogen sulfide gas to the health of operators, the toxic gas is absorbed by the gas collecting part 9. Further, the gas collecting portion 9 may be a collecting bottle, and the collecting bottle may contain a reactant compatible with the toxic gas or capable of absorbing the reaction, and the kind of the reactant may be determined as required. As an example, the reactant is zinc acetate solution, and is communicated with the gas outlet through a conduit for collecting hydrogen sulfide gas.
In an alternative embodiment, the test rig further comprises a sealing lid 10, the sealing lid 10 being located at the top of the corrosion chamber 1.
As mentioned above, the test process generates hydrogen sulfide toxic gas, so that the test cabin body must be ensured to be sealed, and the embodiment of the invention seals the corrosion cabin 1 by arranging the sealing cover 10, so as to improve the operability and safety of the test device.
In an alternative embodiment, the corrosion chamber 1 is a cube with a circular threaded opening on the upper surface, the sealing cover 10 is screwed on the circular threaded opening to realize sealing, and an O-shaped rubber pad is arranged on the circumference of the bottom of the sealing cover 10 to guarantee the sealing effect.
When the test device provided by the embodiment of the invention is applied to a test, one side of the circulating water pump is connected with the sewage renewing container 6 through the guide pipe, and the other side of the circulating water pump is connected with the water filling port;
the valve at the water outlet is closed, the detachable connector is detached, the circulating water pump is opened, and the fresh sewage in the sewage updating container 6 is pumped into the corrosion chamber 1 from the water inlet until the liquid level of the sewage is filled with the simulated pipe canal 2; opening the constant temperature water bath tank and the intelligent humidifier 8, and adjusting the temperature and the humidity to be set values; unscrewing a sealing cover 10, erecting a concrete test piece 11 in the simulated pipe duct 2, soaking half of the concrete test piece in sewage, exposing half of the concrete test piece in air of a cabin body, and screwing the sealing cover 10; the water outlet valve is closed, the detachable connector is communicated with the circulating water pump, the circulating water pump is opened, and sewage in the corrosion cabin 1 is pumped to the high side from the low side of the simulation pipe duct 2, so that the circulating flow of the sewage is realized; connecting the air outlet with a gas collecting container, opening a valve of the air inlet and the air outlet, and periodically injecting compressed air to renew the gas environment in the corrosion chamber 1; opening a valve at the water outlet, removing the detachable connector, opening a circulating water pump, periodically pumping fresh sewage in the sewage updating container 6 into the corrosion cabin 1 through the water injection port, and discharging old sewage through the water discharge port; and opening the air inlet and the air outlet, injecting compressed air to discharge the gas in the corrosion chamber 1, unscrewing the sealing cover 10, and taking out the test piece periodically for detection or replacement.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should be considered as the protection scope of the present invention.
Claims (8)
1. A microbial corrosion test apparatus for simulating hydraulic conditions in a gravity flow sewer line, the apparatus comprising:
the corrosion chamber is used for simulating a corrosion environment in the sewage pipeline;
the gravity flow simulation part is positioned in the corrosion cabin, and the gravity flow simulation part and the bottom of the corrosion cabin are inclined at a preset angle and used for providing a water head difference and simulating gravity flow in a real sewage pipeline;
the microbial corrosion part is used for setting the corrosion chamber under the conditions of proper temperature, humidity and concentration of hydrogen sulfide gas, and providing a function of setting a corrosion environment so as to realize simulated corrosion of sewage pipelines in different climatic environment regions;
the gas collecting device is connected with the corrosion cabin and is used for collecting hydrogen sulfide gas in the corrosion cabin each time the corrosion cabin door is opened;
the sewage environment simulation part is used for adjusting the sewage liquid phase environment in the corrosion cabin, including sewage flow velocity, flow and sewage quality, and investigating the influence of water quality and hydraulic condition factors on the corrosion of the sewage pipeline;
the gravity flow simulation part comprises a simulation pipe channel;
the simulation pipe channel is positioned in the corrosion cabin, and the simulation pipe channel and the bottom of the corrosion cabin are inclined at a preset angle;
the simulation canal is a semicircular section, and the preset angle between the highest side and the lowest side of the simulation canal is 2-10%.
2. The microbial corrosion test apparatus capable of simulating hydraulic conditions of a gravity flow sewer line according to claim 1, wherein the gravity flow simulation part further comprises a circulating water control part;
the circulating water control part is connected with the corrosion cabin and is used for providing a circulating path for the simulation pipe duct to form gravity flow.
3. The apparatus of claim 2, wherein the circulating water control unit comprises a water inlet pipe, a water outlet pipe and a circulating pump;
one end of the water inlet pipe is connected with the first end of the corrosion cabin, the other end of the water inlet pipe is connected with the water outlet pipe, the circulating pump is located on the water outlet pipe, and the first end of the corrosion cabin is opposite to the second end of the corrosion cabin.
4. The apparatus of claim 1, wherein the microbial corrosion section comprises a temperature monitoring section at the bottom of the simulated conduit, the temperature monitoring section being configured to maintain a predetermined temperature within the corrosion chamber.
5. The apparatus of claim 1, wherein the microbial corrosion section further comprises a humidity control section for controlling the ambient humidity within the corrosion chamber.
6. The apparatus of claim 1, wherein the microbial corrosion section comprises a hydrogen sulfide gas concentration monitoring section, the hydrogen sulfide gas concentration monitoring section is coupled to the corrosion chamber, and the hydrogen sulfide gas concentration monitoring section is configured to monitor and control a concentration of hydrogen sulfide in the corrosion chamber.
7. The apparatus of claim 1, wherein the gas collection device comprises a gas inlet pipe, a gas outlet pipe, and a gas collection portion, the gas inlet pipe is connected to a first end of the corrosion chamber, the gas outlet pipe is connected to a second end of the corrosion chamber, and the gas collection portion is connected to the gas outlet pipe.
8. The microbial corrosion test apparatus capable of simulating hydraulic conditions in a gravity flow sewer line according to claim 1, further comprising a sealing cover positioned on top of the corrosion chamber.
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| CN2844899Y (en) * | 2005-11-18 | 2006-12-06 | 中国海洋大学 | Experiment device for generation of simulated microorgan/macromolecular membrane |
| US10677712B2 (en) * | 2013-10-29 | 2020-06-09 | Massachusetts Institute Of Technology | High-throughput corrosion testing platform |
| CN105886390B (en) * | 2016-06-28 | 2019-01-22 | 天津城建大学 | A kind of the microbiologic(al) corrosion experimental provision and experimental method of concrete |
| CN107044952B (en) * | 2017-04-25 | 2019-09-03 | 石家庄铁道大学 | A kind of corrosion device for simulating sewage pipe inner concrete under different hydraulics |
| CN107607463B (en) * | 2017-09-15 | 2020-03-06 | 天津大学 | Concrete sewage pipe corrosion detection method |
| CN210487559U (en) * | 2019-11-11 | 2020-05-08 | 海南大学 | Concrete material reactor for simulating rapid corrosion in high-temperature and high-salt area |
| CN112504948B (en) * | 2020-10-17 | 2023-04-11 | 浙江水利水电学院 | Concrete durability detection device under load-ion-biology combined action |
| CN114088609A (en) * | 2021-10-12 | 2022-02-25 | 天津城建大学 | Experimental device and experimental method for simulating microbial corrosion of concrete in seawater environment |
| CN114164095B (en) * | 2021-11-29 | 2023-07-28 | 河海大学 | Device and method for simulating microbial corrosion of concrete sewage pipeline |
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