CN106442297A - Salt fog test device with carbonization corrosion function - Google Patents
Salt fog test device with carbonization corrosion function Download PDFInfo
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- CN106442297A CN106442297A CN201610991980.5A CN201610991980A CN106442297A CN 106442297 A CN106442297 A CN 106442297A CN 201610991980 A CN201610991980 A CN 201610991980A CN 106442297 A CN106442297 A CN 106442297A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 212
- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000005260 corrosion Methods 0.000 title claims abstract description 40
- 230000007797 corrosion Effects 0.000 title claims abstract description 38
- 238000003763 carbonization Methods 0.000 title claims abstract description 34
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 268
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 134
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 134
- 238000005507 spraying Methods 0.000 claims abstract description 70
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 239000007921 spray Substances 0.000 claims description 190
- 238000002347 injection Methods 0.000 claims description 79
- 239000007924 injection Substances 0.000 claims description 79
- 238000001514 detection method Methods 0.000 claims description 31
- 230000001276 controlling effect Effects 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000012267 brine Substances 0.000 claims description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 9
- 230000003628 erosive effect Effects 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
Classifications
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- G—PHYSICS
- 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
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a salt fog test device with a carbonization corrosion function. The device comprises a box, a salt fog spraying device, a carbon dioxide spraying device, a bearing rack and a heating device, wherein the bearing rack is suspended in the box and is used for placing a to-be-tested sample; the heating device is connected to the inside of the box and is used for adjusting the temperature of the inside of the box; the carbon dioxide spraying device is connected to the box and is used for spraying carbon dioxide into the box; and the salt fog spraying device is connected to the box and is used for spraying salt fog to the inside of the box. In the salt fog test device, a carbonization test and a salt fog test can be carried out simultaneously by the carbon dioxide spraying device and the salt fog spraying device, an actual erosion environment of a to-be-tested sample is simulated well, a corrosion mechanism of the to-be-tested sample is convenient to research under the combined action of carbonization and salt fog, and then a corresponding anti-corrosion measure is determined. In addition, the salt fog test device with the carbonization corrosion function is simple in structure and easy to implement.
Description
Technical Field
The invention relates to the technical field of salt spray testing, in particular to a salt spray testing device with a carbonization corrosion function.
Background
Coastal areas in China are areas with developed economy, infrastructure construction is early, the scale is large, and the coastal areas are also main load centers of electric power transmission in China. With the rapid development of electric power industry in China, the transmission lines of a plurality of power plants pass through coastal mudflats or lines crossing islands, so that the concrete foundation of the transmission line tower is easily corroded by the environment of a coastal region. Specifically, the corrosion to which the concrete foundation is subjected includes corrosion by carbonation and erosion by salt spray, wherein the carbonation accelerates the salt spray attack on the concrete structure. To better study the effects of carbonation and salt spray on concrete structures, accelerated indoor tests are a frequently used method. However, when the existing indoor acceleration test is performed with the carbonization test and the salt spray test, the carbonization test and the salt spray test need to be performed through the carbonization tank and the salt spray tank respectively, and the carbonization test and the salt spray test are not performed simultaneously, but performed sequentially, so that the indoor acceleration test cannot simulate the actual carbonization and salt spray erosion environment of the concrete structure.
Disclosure of Invention
In view of the above, the invention provides a salt spray test device with a carbonization corrosion function, and aims to solve the problem that the prior art cannot simulate the actual carbonization and salt spray corrosion environment of a concrete structure.
The invention provides a salt spray test device with a carbonization corrosion function, which comprises: the device comprises a box body, a salt spray injection device, a carbon dioxide injection device, a bearing frame and a heating device; the bearing frame is suspended in the box body and used for placing a sample to be tested; the heating device is connected in the box body and is used for adjusting the temperature in the box body; the carbon dioxide injection device is connected with the box body and is used for injecting carbon dioxide into the box body; the salt spray spraying device is connected to the box body and used for spraying salt spray into the box body.
Further, the salt spray test device with the carbonization corrosion function further comprises: a control device; the control device is arranged outside the box body and electrically connected with the salt spray device and used for controlling the salt spray device to stop spraying when the salt spray sprayed by the salt spray device reaches the preset time.
Further, the salt spray test device with the carbonization corrosion function further comprises: a carbon dioxide detection device; the carbon dioxide detection device is connected in the box body and used for detecting the concentration of carbon dioxide in the box body; the control device is also electrically connected with the carbon dioxide detection device and the carbon dioxide injection device, and is also used for receiving the concentration of the carbon dioxide and controlling the carbon dioxide injection device to stop injecting when the concentration of the carbon dioxide reaches the preset concentration.
Further, in the salt spray test apparatus having a carbonation corrosion function, the carbon dioxide injection apparatus includes: the carbon dioxide injection pipe, the carbon dioxide storage tank and the air pump are arranged outside the box body; the carbon dioxide injection pipe penetrates through the box body, part of the carbon dioxide injection pipe is arranged in the box body, and one end, arranged outside the box body, of the carbon dioxide injection pipe is connected with the carbon dioxide storage tank through the air pump; the carbon dioxide injection pipe is provided with a first regulating valve which is electrically connected with the control device, and the control device is also used for regulating the opening degree of the first regulating valve; the control device is also electrically connected with the air pump and is also used for controlling the opening and closing of the air pump.
Further, the salt spray test device with the carbonization corrosion function further comprises: a temperature detection device; the temperature detection device is connected in the box body and used for detecting the temperature in the box body; the control device is also electrically connected with the temperature detection device and the heating device and used for receiving the temperature and controlling the heating device to stop heating when the temperature reaches the preset temperature.
Further, in the salt spray test apparatus having a carbonation corrosion function, the salt spray apparatus includes: the salt spray injection pipe, a salt water tank and a water pump are arranged outside the box body; the salt spray injection pipe penetrates through the box body, part of the salt spray injection pipe is arranged in the box body, and one end, arranged outside the box body, of the salt spray injection pipe is connected with the brine tank through a water pump; the salt spray injection pipe is provided with a second regulating valve which is electrically connected with the control device, and the control device is also used for controlling the opening degree of the second regulating valve; the control device is also electrically connected with the water pump and is also used for controlling the opening and closing of the water pump.
Further, the salt spray test device with the carbonization corrosion function further comprises: a salt spray metering device; the salt spray metering device is connected with the box body and used for detecting the salt spray amount in the box body; the control device is also electrically connected with the salt spray metering device and the water pump and used for receiving the salt spray amount, determining the spraying speed of the salt spray spraying pipe according to the salt spray amount and adjusting the salt spray spraying pipe to the preset spraying speed when the spraying speed is deviated from the preset spraying speed.
Furthermore, in the salt spray test device with the carbonization corrosion function, the spray opening of the salt spray pipe faces the bearing frame.
Further, in the salt spray test apparatus with a carbonation corrosion function, the bearing frame includes: a connecting rod and a bearing plate; the first end of the connecting rod is connected with the top wall of the box body, the second end of the connecting rod is connected with the bearing plate, the bearing plate is suspended in the box body, and the bearing plate is used for placing a test sample to be tested.
Furthermore, in the salt spray test device with the carbonization corrosion function, the side wall of the box body is provided with an exhaust hole.
The device has the advantages that the carbon dioxide injection device and the salt spray injection device are arranged, so that the carbonization test and the salt spray test can be simultaneously carried out, the actual erosion environment of the sample to be tested is well simulated, the corrosion mechanism of the sample to be tested under the combined action of carbonization and salt spray is conveniently researched, the corresponding anti-corrosion measure is further determined, the problem that the actual carbonization and salt spray erosion environment of a concrete structure cannot be simulated in the prior art is solved, and the device is simple in structure and easy to realize.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a salt spray test apparatus with a carbonation corrosion function according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a salt spray testing apparatus with a carbonation corrosion function according to an embodiment of the present invention. As shown in the figure, the salt spray test device comprises: the salt spray device comprises a box body 1, a salt spray spraying device 2, a carbon dioxide spraying device 3, a bearing frame 4 and a heating device 5. The box body 1 may be rectangular, square, etc., and the shape of the box body 1 is not limited in this embodiment. Bear frame 4 and hang in box 1, bear frame 4 and be used for placing the sample that awaits measuring. In particular, the carriage 4 may comprise: a connecting rod 41 and a carrier plate 42. The connecting rod 41 is disposed in the case 1 in a vertical state (with respect to fig. 1), a first end (an upper end shown in fig. 1) of the connecting rod 41 is connected to the top wall of the case 1, and a second end (a lower end shown in fig. 1) of the connecting rod 41 is connected to the bearing plate 42. The carrier plate 42 is a plate-like body suspended in the housing 1, and the carrier plate 42 is horizontally (with respect to fig. 1) disposed in the housing 1, and the test sample to be tested is placed on the carrier plate 42. In specific implementation, the sample to be tested may be a concrete sample, or may be another sample, which is not limited in this embodiment.
The lateral wall of the box body 1 can be provided with an exhaust hole 110, specifically, the exhaust hole 110 is arranged on the lateral wall of the box body 1 close to the top wall, and after the test is finished, the carbon dioxide and the salt fog in the box body can be conveniently discharged.
The heating device 5 is disposed in the case 1, and the heating device 5 is connected to the case 1, and preferably, the heating device 5 is connected to a sidewall of the case 1. The heating device 5 is used for adjusting the temperature in the box body 1 so as to enable the temperature in the box body 1 to reach the preset temperature required by the test. The carbon dioxide injection device 3 is connected to the housing 1, and the carbon dioxide injection device 3 injects carbon dioxide into the housing 1. Specifically, the carbon dioxide injection device 3 is partially disposed inside the tank 1, and partially disposed outside the tank 1. The carbon dioxide injection device 3 may be connected to any position of the housing 1, and preferably, the carbon dioxide injection device 3 is disposed at the middle of the housing 1. The carbon dioxide injection device 3 can inject carbon dioxide into the box body 1 according to a preset concentration required by the test, and the speed of the carbon dioxide injection device 3 for injecting carbon dioxide can be determined according to the actual situation, which is not limited in this embodiment. It should be noted that, in the specific implementation, the preset temperature and the preset concentration may be determined according to the actual situation, and this embodiment does not limit this.
The salt spray device 2 is connected to the box body 1, and the salt spray device 2 is used for spraying salt spray into the box body 1. Specifically, the salt spray spraying device 2 is partially arranged in the box body 1, and partially arranged outside the box body 1. The salt spray device 2 can be connected to any position of the box body 1, and preferably, the salt spray device 2 is arranged at the bottom of the box body 1, so that the sample to be tested is uniformly corroded by the salt spray.
During specific implementation, a sample to be tested can be corroded by salt spray for a plurality of years under the actual working condition, the salt spray spraying device 2 carries out correlation calculation according to the salt spray corrosion condition of the sample to be tested under the actual working condition, and the salt spray corrosion condition of the sample to be tested for a plurality of years under the actual working condition is converted into the salt spray amount sprayed into the box body 1 by the salt spray spraying device 2 in the test process.
During the test, a sample to be tested is placed on the bearing frame 4 in the box body 1, the heating device 5 is started, the temperature in the box body 1 is raised by the heating device 5, and the heating is stopped until the preset temperature required by the test is reached. The carbon dioxide injection device 3 injects carbon dioxide into the tank 1, and stops injecting carbon dioxide until the concentration of carbon dioxide in the tank 1 reaches a preset concentration required by the test. When the temperature and the concentration of carbon dioxide both meet the test conditions, the salt spray spraying device 2 sprays salt spray into the box body 1 until the salt spray in the box body 1 can meet the salt spray erosion condition of the sample to be tested under the actual working condition, and the salt spray spraying is stopped. And (3) opening the exhaust holes 110 on the side wall of the box body, exhausting the carbon dioxide and the salt fog in the box body 1 out of the box body 1, taking out the sample to be tested, and finishing the test.
It can be seen that, in this embodiment, through setting up carbon dioxide injection apparatus 3 and salt fog injection apparatus 2 for carbonization test and salt fog test can go on simultaneously, have simulated the erosion environment of the actual carbonization of the sample that awaits measuring and salt fog well, be convenient for study the corrosion mechanism of the sample that awaits measuring under carbonization and salt fog combined action, and then determine corresponding anticorrosive measure, solved the problem that prior art can't simulate the actual carbonization of concrete structure and the erosion environment of salt fog, and, simple structure, easily realization.
In specific implementation, in order to enable the salt spray amount sprayed into the box body 1 by the salt spray spraying device 2 to better simulate the salt spray erosion condition of the sample to be tested under the actual working condition, the salt spray erosion condition of the sample to be tested for several years under the actual working condition can be converted into the salt spray amount sprayed into the box body 1 by the salt spray spraying device 2 at a preset speed within a corresponding preset time, and of course, the salt spray amount sprayed into the box body 1 can also be converted into other modes. In the present embodiment, the salt spray spraying device 2 is used to spray the salt spray into the tank 1 at a preset speed for a preset time. The preset time is determined according to salt spray erosion conditions of the sample to be tested in different years, and the preset speed is determined according to relevant specifications.
In the above embodiment, the salt spray test apparatus may further include: and a control device. Wherein, controlling means sets up outside box 1 to, controlling means can be connected with salt fog injection apparatus 2 electricity, and controlling means is used for when salt fog injection apparatus 2 sprays salt fog and reaches the preset time, and control salt fog injection apparatus 2 stops to spray the salt fog. Specifically, the control device may store a preset time in advance, and control the salt spray injection device 2 to stop injecting the salt spray when the salt spray injection reaches the preset time; or, the outer wall of the box body 1 is provided with a control panel 13, the control panel 13 is provided with a time input device 10, a worker inputs preset time through the time input device 10, the time input device 10 is electrically connected with the control device and sends the input preset time to the control device, the control device receives the preset time and controls the salt spray spraying device 2 to stop spraying the salt spray when the salt spray spraying reaches the preset time, wherein the time input device 10 can be an input button or a touch screen. In specific implementation, the salt spray test device may further include: a control box 12, the control box 12 is connected to a left side wall (with respect to fig. 1) of the housing 1, and a control panel 13 may be provided to the control box 12.
During the test, when the temperature in the box body 1 and the concentration of the carbon dioxide reach the test requirements required by the test, the control device controls the salt spray injection device 2 to inject the salt spray into the box body 1 at a preset speed, and controls the salt spray injection device 2 to stop injecting the salt spray when the salt spray injection reaches the preset time.
It can be seen that, in this embodiment, through controlling means according to presetting time control salt fog injection apparatus 2 timing switch, realized automated design, simple and convenient, the error rate is low, and is efficient.
Referring to fig. 1, in the above embodiment, the salt spray testing apparatus may further include: and a carbon dioxide detection device 6. Wherein, carbon dioxide detection device 6 is arranged in box 1 to carbon dioxide detection device 6 is connected with box 1, and carbon dioxide detection device 6 is used for detecting the concentration of carbon dioxide in box 1. Specifically, the carbon dioxide detecting device 6 may be disposed at any position within the case 1, and preferably, the carbon dioxide detecting device 6 is connected to the top wall of the case 1. The carbon dioxide detecting means 6 may be a carbon dioxide sensor.
The control device is also electrically connected with the carbon dioxide detection device 6 and the carbon dioxide injection device 3, and is also used for receiving the concentration of the carbon dioxide sent by the carbon dioxide detection device 6 and controlling the carbon dioxide injection device 3 to stop injecting the carbon dioxide when the concentration of the carbon dioxide reaches the preset concentration. Specifically, the control means may store a preset concentration of carbon dioxide in advance, and control the carbon dioxide injection means 3 to stop injecting carbon dioxide when the preset concentration is reached; also, the control panel 13 is provided with a carbon dioxide input device 8, the staff inputs the preset concentration of carbon dioxide through the carbon dioxide input device 8, the carbon dioxide input device 8 is electrically connected with the control device, the carbon dioxide input device 8 sends the input preset concentration to the control device, the control device receives the preset concentration, and the carbon dioxide injection device 3 is controlled to stop injecting carbon dioxide when the preset concentration is reached, wherein the carbon dioxide input device 8 can be an input button or a touch screen.
During the test, the carbon dioxide detection device 6 detects the concentration of carbon dioxide in the housing 1 and transmits the detected concentration of carbon dioxide to the control device, and the control device receives the concentration of carbon dioxide and transmits an injection signal to the carbon dioxide injection device 3. The carbon dioxide injection device 3 receives the injection signal and injects carbon dioxide into the tank 1. The carbon dioxide detection device 6 detects the concentration of carbon dioxide in the box 1 in real time and sends the detected concentration of carbon dioxide to the control device in real time, when the control device receives that the concentration of carbon dioxide in the box 1 reaches a preset concentration, the control device sends a stop signal to the carbon dioxide injection device 3, and the carbon dioxide injection device 3 receives the stop signal and stops injecting carbon dioxide.
It can be seen that in this embodiment, through setting up carbon dioxide detection device 6 and controlling means for carbon dioxide injection apparatus 3 can realize spraying automatically, need not manual control, has saved the labour, has reduced the error rate that manual operation leads to, has improved test efficiency.
With continued reference to fig. 1, in each of the above embodiments, the carbon dioxide injection device 3 may include: a carbon dioxide injection pipe 31, a carbon dioxide storage tank 32, and an air pump 33. The carbon dioxide injection pipe 31 is inserted into the left side wall of the housing 1, and the carbon dioxide injection pipe 31 is partially disposed in the housing 1. The carbon dioxide storage tank 32 and the air pump 33 are both disposed outside the cabinet 1. The carbon dioxide injection pipe 31 is provided with a carbon dioxide nozzle 35 at one end (right end in fig. 1) placed in the housing 1, and the carbon dioxide nozzle 35 injects carbon dioxide into the housing 1. The carbon dioxide injection pipe 31 is connected to a carbon dioxide storage tank 32 at one end (left end in fig. 1) disposed outside the housing 1 by an air pump 33, and the carbon dioxide storage tank 32 stores carbon dioxide. The control device can be electrically connected with the air pump 33, and the control device is further used for controlling the opening and closing of the air pump 33 so as to control whether the carbon dioxide storage tank 32 inputs carbon dioxide into the carbon dioxide injection pipe 31 and further realize the control of the carbon dioxide injection pipe 31 to inject the carbon dioxide or stop injecting the carbon dioxide.
Specifically, the carbon dioxide injection pipe 31 may be disposed at any position within the housing 1, and preferably, the carbon dioxide injection pipe 31 is disposed at the middle of the housing 1. The carbon dioxide storage tank 32 and the air pump 33 are both disposed in the control box 12.
The carbon dioxide injection pipe 31 is provided with a first regulating valve 34, and the first regulating valve 34 is electrically connected to a control device, and the control device is also used for regulating the opening degree of the first regulating valve 34. Specifically, the first regulating valve 34 is provided inside the carbon dioxide injecting pipe 31 and near the carbon dioxide injecting nozzle 35. The control means adjusts the speed of carbon dioxide injection from the carbon dioxide injection pipe 31 by controlling the opening degree of the first regulating valve 34.
It can be seen that, in the present embodiment, the carbon dioxide injection device 3 has a simple structure and is easy to implement.
With continued reference to fig. 1, in the above embodiments, the salt spray testing apparatus may further include: and a temperature detection device 7. The temperature detection device 7 is arranged in the box body 1, the temperature detection device 7 is connected with the box body 1, and the temperature detection device 7 is used for detecting the temperature in the box body 1. Specifically, the temperature detection device 7 may be disposed at any position in the box body 1, and preferably, the temperature detection device 7 is connected to the top wall of the box body 1. The temperature detection means 7 may be a temperature sensor.
The control device is also electrically connected with the temperature detection device 7 and the heating device 5, and is further used for receiving the detected temperature sent by the temperature detection device 7 and controlling the heating device 5 to stop heating when the detected temperature reaches a preset temperature. Specifically, a preset temperature may be stored in the control device in advance, and the heating device 5 is controlled to stop heating when the preset temperature is reached; or, the control panel 13 is provided with a temperature input device 9, a worker inputs a preset temperature through the temperature input device 9, the temperature input device 9 is electrically connected with the control device, the temperature input device 9 sends the input preset temperature to the control device, the control device receives the preset temperature, and the heating device 5 is controlled to stop heating when the temperature in the box body 1 reaches the preset temperature, wherein the temperature input device 9 may be an input button or a touch screen.
In the test, the temperature detector 7 detects the temperature in the case 1 and transmits the detected temperature to the controller, and the controller receives the temperature and transmits a heating signal to the heater 5. The heating device 5 receives the heating signal and raises the temperature inside the cabinet 1. The temperature detection device 7 detects the temperature in the box body 1 in real time and sends the detected temperature to the control device in real time, when the control device receives that the temperature in the box body 1 reaches the preset temperature, a stop signal is sent to the heating device 5, and the heating device 5 receives the stop signal and stops heating.
It can be seen that, in this embodiment, through setting up temperature-detecting device 7 for heating device 5 can realize self-heating and automatic shutdown heating, need not manual control, has improved test efficiency.
Referring to fig. 1, in the above embodiment, the salt spray device 2 may include: a salt spray injection pipe 21, a brine tank 22 and a water pump 23. Wherein, the salt spray injection pipe 21 is arranged through the side wall at the left side of the box body 1, and the salt spray injection pipe 21 is partially arranged in the box body 1, and the salt water tank 22 and the water pump 23 are both arranged outside the box body 1. The salt spray nozzle 26 is provided at one end (right end in fig. 1) of the salt spray pipe 21 disposed in the tank 1, and the salt spray nozzle 26 sprays salt mist into the tank 1. The salt spray injection pipe 21 is connected to a brine tank 22 through a water pump 23 at an end (left end in fig. 1) disposed outside the case 1, and the brine tank 22 stores brine. The control device can also be electrically connected with the water pump 23, and the control device is also used for controlling the opening and closing of the water pump 23 so as to control whether the brine tank 22 inputs the brine into the salt spray injection pipe 21 and further control the salt spray injection pipe 21 to inject the salt spray or stop injecting the salt spray.
Specifically, the salt spray pipe 21 may be disposed at any position in the tank 1, and preferably, the salt spray pipe 21 is disposed through the left side wall of the tank 1 near the bottom wall, and the salt spray pipe 21 is disposed in the tank 1 at the bottom of the tank 1. The brine tank 22 and the water pump 23 are both disposed within the control box 12.
The salt spray pipe 21 is provided with a second regulating valve 24, and the second regulating valve 24 is electrically connected with a control device, and the control device is also used for controlling the opening degree of the second regulating valve 24. Specifically, the second regulating valve 24 is disposed inside the salt spray injection pipe 21 and near the salt spray nozzle 26. The control device controls the opening degree of the second regulating valve 24 to realize the regulation of the salt spray speed of the salt spray spraying pipe 21.
It can be seen that, in the present embodiment, the salt spray device 2 has a simple structure and is easy to implement.
With continued reference to fig. 1, in the above embodiment, the salt spray testing apparatus may further include: a salt spray metering device 25. Wherein, salt fog metering device 25 is connected with the lateral wall of box 1, and salt fog metering device is used for detecting the salt fog volume in box 1. The control device is also electrically connected with the salt spray metering device 25 and the water pump 23, and is also used for receiving the salt spray amount detected by the salt spray metering device and determining the spraying speed of the salt spray spraying pipe 21 according to the salt spray amount. The control device presets the spraying speed of the salt spray spraying pipe 21, and when the detected spraying speed of the salt spray spraying pipe 21 deviates from the preset spraying speed, the spraying speed of the salt spray spraying pipe 21 is adjusted to reach the preset spraying speed.
In the test, the control device sets the spray speed of the salt spray pipe 21 in advance, and controls the spray speed of the salt spray pipe 21 by controlling the water pump 23 when the test is started. In the test process, the salt spray metering device 25 measures the amount of salt spray in the box body 1, sends the detected amount of salt spray to the control device, the control device receives the amount of salt spray in the box body, determines whether the spraying speed of the salt spray spraying pipe 21 is consistent with the preset spraying speed or not according to the amount of salt spray, and if deviation exists, the control device adjusts the spraying speed of the salt spray spraying pipe 21 by adjusting the flow of the water pump 23 so as to enable the spraying speed to reach the preset spraying speed.
It can be seen that, in this embodiment, the salt spray metering device 25 is arranged to ensure the spraying speed of the salt spray spraying pipe 21, so as to facilitate the test.
With continued reference to fig. 1, in the above-described embodiment, the spray openings of the salt spray pipes 21 may be directed towards the carrier 4, in particular, the spray openings of the salt spray pipes 21 are connected with salt spray nozzles 26, the salt spray nozzles 26 being arranged towards the carrier 4. The salt spray pipes 21 are perforated in the left side wall of the tank 1 near the bottom wall, and the portion of the salt spray pipes 21 inside the tank 1 is placed at the bottom of the tank 1, the salt spray pipes 21 are bent upward (with respect to fig. 1) at positions corresponding to the carrier 4, and the salt spray nozzles 26 are directed toward the carrier 4.
It can be seen that, in the embodiment, the salt fog sprayed by the salt fog spraying pipe 21 can be better diffused in the box body 1 to erode the test sample to be tested.
In conclusion, the embodiment can enable the carbonization test and the salt spray test to be simultaneously carried out, well simulates the actual corrosion environment of the sample to be tested, is convenient for researching the corrosion mechanism of the sample to be tested under the combined action of the carbonization and the salt spray, further determines the corresponding anticorrosion measures, and is simple in structure and easy to realize.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a salt atmosphere test device with carbonization corrosion function which characterized in that includes: the device comprises a box body (1), a salt spray spraying device (2), a carbon dioxide spraying device (3), a bearing frame (4) and a heating device (5); wherein,
the bearing frame (4) is suspended in the box body (1) and is used for placing a sample to be tested;
the heating device (5) is connected in the box body (1) and is used for adjusting the temperature in the box body (1);
the carbon dioxide injection device (2) is connected to the box body (1) and is used for injecting carbon dioxide into the box body (1);
the salt spray spraying device (3) is connected to the box body (1) and is used for spraying salt spray into the box body (1).
2. The salt spray test device with a carbonation corrosion function according to claim 1, further comprising: a control device; wherein,
the control device is arranged outside the box body (1), is electrically connected with the salt spray spraying device (2) and is used for controlling the salt spray spraying device (2) to stop spraying when the salt spray spraying of the salt spray spraying device (2) reaches a preset time.
3. The salt spray test device with a carbonation corrosion function according to claim 2, further comprising: a carbon dioxide detection device (6); wherein,
the carbon dioxide detection device (6) is connected in the box body (1) and is used for detecting the concentration of carbon dioxide in the box body (1);
the control device is also electrically connected with the carbon dioxide detection device (6) and the carbon dioxide injection device (3), and is also used for receiving the concentration of the carbon dioxide and controlling the carbon dioxide injection device (3) to stop injecting when the concentration of the carbon dioxide reaches a preset concentration.
4. The salt spray test device with a carbonation corrosion function according to claim 3, wherein said carbon dioxide injection means (3) comprises: a carbon dioxide injection pipe (31), a carbon dioxide storage tank (32) and an air pump (33) which are arranged outside the box body; wherein,
the carbon dioxide injection pipe (31) penetrates through the box body (1) and is partially arranged in the box body (1), and one end, outside the box body (1), of the carbon dioxide injection pipe (31) is connected with the carbon dioxide storage tank (32) through the air pump (33);
the carbon dioxide injection pipe (31) is provided with a first regulating valve (34), the first regulating valve (34) is electrically connected with the control device, and the control device is also used for regulating the opening degree of the first regulating valve (34);
the control device is also electrically connected with the air pump (33) and is also used for controlling the opening and closing of the air pump (33).
5. The salt spray test device with a carbonation corrosion function according to claim 2, further comprising: a temperature detection device (7); wherein,
the temperature detection device (7) is connected in the box body (1) and is used for detecting the temperature in the box body (1);
the control device is also electrically connected with the temperature detection device (7) and the heating device (5) and used for receiving the temperature and controlling the heating device (5) to stop heating when the temperature reaches a preset temperature.
6. The salt spray test device with a carbonation corrosion function according to claim 2, wherein said salt spray means (2) comprises: a salt spray spraying pipe (21), a salt water tank (22) and a water pump (23) which are arranged outside the box body (1); wherein,
the salt spray injection pipe (21) penetrates through the box body (1) and is partially arranged in the box body (1), and one end, arranged outside the box body (1), of the salt spray injection pipe (21) is connected with the brine tank (22) through the water pump (23);
the salt spray spraying pipe (21) is provided with a second regulating valve (24), the second regulating valve (24) is electrically connected with the control device, and the control device is also used for controlling the opening degree of the second regulating valve (24);
the control device is also electrically connected with the water pump (23) and is also used for controlling the opening and closing of the water pump (23).
7. The salt spray test device with a carbonization corrosion function as claimed in claim 6, further comprising: a salt spray metering device (25); wherein,
the salt spray metering device (25) is connected with the box body (1) and is used for detecting the salt spray amount in the box body (1);
the control device is also electrically connected with the salt spray metering device (25) and the water pump (23) and is used for receiving the salt spray amount, determining the spraying speed of the salt spray spraying pipe (21) according to the salt spray amount, and adjusting the salt spray spraying pipe (21) to the preset spraying speed when the spraying speed is deviated from the preset spraying speed.
8. The salt spray test device with a carbonization corrosion function as claimed in claim 6, wherein the spray openings of the salt spray pipes (21) are directed toward the carrier (4).
9. The salt spray test device with a carbonation corrosion function according to any one of claims 1 to 8, characterized in that said carrier (4) comprises: a connecting rod (41) and a bearing plate (42); the first end of the connecting rod (41) is connected with the top wall of the box body (1), the second end of the connecting rod (41) is connected with the bearing plate (42), the bearing plate (42) is suspended in the box body (1), and the bearing plate (42) is used for placing the test sample to be tested.
10. The salt spray test device with the carbonization corrosion function as claimed in any one of claims 1 to 8, wherein the side wall of the box body (1) is provided with an exhaust hole (110).
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Application publication date: 20170222 |