CN113310881A - Automatic sodium chloride corrosive liquid supplementing equipment and method - Google Patents
Automatic sodium chloride corrosive liquid supplementing equipment and method Download PDFInfo
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- CN113310881A CN113310881A CN202110508703.5A CN202110508703A CN113310881A CN 113310881 A CN113310881 A CN 113310881A CN 202110508703 A CN202110508703 A CN 202110508703A CN 113310881 A CN113310881 A CN 113310881A
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 197
- 239000007788 liquid Substances 0.000 title claims abstract description 167
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 99
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 183
- 238000012360 testing method Methods 0.000 claims abstract description 56
- 230000007797 corrosion Effects 0.000 claims abstract description 39
- 238000005260 corrosion Methods 0.000 claims abstract description 39
- 150000003839 salts Chemical class 0.000 claims description 22
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 230000003020 moisturizing effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000007747 plating Methods 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 18
- 239000012266 salt solution Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
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- General Physics & Mathematics (AREA)
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- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to automatic sodium chloride corrosive liquid supplementing equipment which comprises a water tank, wherein a sodium chloride quantitative tank, a water supplementing ball valve, a high-water-level floating ball, a low-water-level floating ball, a heater, a liquid level meter, a conductivity sensor and an acidity sensor are connected to the water tank, a corrosive liquid supplementing pipe is externally connected to the lower portion of the water tank, a manual ball valve, an electromagnetic valve and a magnetic pump are arranged on the corrosive liquid supplementing pipe, the bottom of the water tank is communicated with a water discharging pipe, a water discharging valve is arranged on the water tank, the high-water-level floating ball and the low-water-level floating ball are connected with a PLC (programmable logic controller), and the PLC is respectively in data connection with the liquid level meter, the acidity sensor and the conductivity sensor and is also in valve control connection with the sodium chloride quantitative tank, the water supplementing ball valve, the heater, the magnetic pump and a sodium chloride corrosive liquid supplementing electronic valve. The method can prepare and automatically provide the corrosive liquid for the corrosion testing machine, improve the automation degree of the coating or plating of the part in the automobile research and development process in the corrosion test process, reduce the labor intensity of workers, test external influence factors, and improve the stability and accuracy of the corrosion test.
Description
Technical Field
The invention belongs to the technical field of automobile reliability tests, and particularly relates to automatic sodium chloride corrosive liquid supplementing equipment and a method.
Background
When the automobile parts are subjected to the sodium chloride solution corrosion test, the test period is long, the sodium chloride corrosion solution supply box configured along with equipment cannot meet the requirements of all-weather tests, and the manual blending and supplementing for many times are required in the intermediate test link, so that much inconvenience is brought to operators. Due to the limitation of test time, overtime and shift are forced to be required for testing sometimes, and extra burden is caused to enterprises. Therefore, when the sodium chloride solution corrosion test is carried out, the blending device for automatically supplementing the sodium chloride corrosion solution can be adopted, the testing machine is ensured to have sufficient supply of the sodium chloride corrosion solution according to the test time and the test period, and the test result cannot be influenced by crystallization or icing of the sodium chloride corrosion solution in the longer period.
The prior art discloses a device for detecting and supplementing salt solution in salt fog machine, including salt solution collector, back flow, salt solution holding vessel, PLC controller, acidity sensor, level sensor, salt concentration sensor, solenoid valve relay, touch screen, water pump relay, its characterized in that: the salt solution collector is arranged at the bottom of the salt spray machine and is used for collecting salt solution, and the return pipe is connected with the salt solution collector and the salt solution storage tank; the acidity sensor, the water level sensor and the salt concentration sensor are connected to the salt solution storage tank. However, this apparatus can automatically replenish the etching solution for only one etching apparatus, and cannot automatically prepare the etching solution.
The prior art also discloses a detection control system with a salt spray amount adjusting function, which comprises a control module, a salt spray generator, a salt spray adjusting module, a temperature and humidity adjusting module and a salt spray detection module; the output end of the control module is connected with the input ends of the salt fog adjusting module, the salt fog generator and the temperature and humidity adjusting module respectively, the output end of the salt fog adjusting module is connected with the input end of the salt fog generator, the output end of the temperature and humidity adjusting module is connected with the input end of the salt fog generator, the output end of the salt fog generator is connected with the input end of the salt fog detecting module, and the output end of the salt fog detecting module is connected with the input end of the control module. However, the device is equipment for automatically adjusting the consumption of the corrosive liquid, and has the main functions of timely alarming and prompting when the content of the salt mist is reduced to a value which cannot meet the test requirement, immediately adjusting the content of the salt mist until the test requirement is met, and not automatically preparing the corrosive liquid.
The existing automobile part corrosion test equipment has no characteristic of automatically preparing and supplementing sodium chloride corrosive liquid, and has large performance difference due to large structural difference, and the following problems mainly exist: 1. the automatic corrosive liquid replenishing device of the corrosion test box has no function of automatically preparing corrosive liquid, the corrosive liquid is added into the automatic replenishing device to replenish the corrosive liquid for the corrosion tester after the corrosive liquid is manually prepared, the manual working time is required to be increased when the corrosive liquid is manually prepared, and the labor intensity is increased; 2. the automatic corrosive liquid supplementing device and the corrosion testing machine are integrally designed, can only provide corrosive liquid for one device, and cannot meet the requirements of multiple devices.
Disclosure of Invention
The invention aims to provide automatic sodium chloride corrosive liquid supplementing equipment and an automatic sodium chloride corrosive liquid supplementing method aiming at the defects of the prior art. The automatic function of the device is utilized to prepare the sodium chloride corrosive liquid with the concentration of 5% according to the test requirement and the standard requirement of the test method, and automatically provide the corrosive liquid for the corrosion tester, so that the automation degree of the coating or plating layer of the part in the automobile research and development process in the corrosion test process can be improved, the manual labor intensity is reduced, the external influence factor of the test is reduced, and the stability and the accuracy of the corrosion test are improved.
The purpose of the invention is realized by the following technical scheme:
an automatic supplement device for sodium chloride corrosive liquid comprises a water tank 4;
the water tank 4 is provided with a sodium chloride quantitative tank 1, a water replenishing ball valve 2, a high water level floating ball 3, a low water level floating ball 5, a heater 6, a liquid level meter 11, a conductivity sensor 14 and an acidity sensor 15; a corrosive liquid supplementing pipe is externally connected below the water tank 4, and a manual ball valve 9, a magnetic pump 10 and an electromagnetic valve 12 are arranged on the supplementing pipe; the bottom of the water tank 4 is provided with a fixed support 7, and the bottom of the fixed support 7 is provided with an adjustable supporting leg 8; a drain pipe communicated with the bottom of the water tank is arranged on the fixed support 7, and a drain valve 13 is arranged on the drain pipe;
the high water level floating ball 3 and the low water level floating ball 5 are connected with a PLC controller through lead wires, the PLC controller is respectively in data connection with the liquid level meter 11, the conductivity sensor 14 and the acidity sensor 15 and can receive liquid level electric signals, conductivity signals and PH value electric signals sent by the liquid level meter 11, the conductivity sensor 14 and the acidity sensor 15; the PLC is respectively in control connection with the sodium chloride quantitative box 1, the water replenishing ball valve 2 and the heater 6; the PLC is also respectively connected with the relays of the magnetic pump 10 and the electromagnetic valve 12, can receive an electromagnetic valve control signal and a magnetic pump control signal sent by the PLC, controls the opening and closing of the valve of the electromagnetic valve 12 and the work of the magnetic pump 10, and receives work signals of the relay of the electromagnetic valve 9 and the relay of the magnetic pump 10 from the relays of the electromagnetic valve 12 and the magnetic pump 10.
Further, a sodium chloride quantitative box 1 is arranged at the top in the water tank 4.
Furthermore, a high water level floating ball 3, a conductivity sensor 14, a low water level floating ball 5 and a liquid level meter 11 are sequentially arranged on the left side of the water tank 4 from high to low; the external moisturizing pipe in right side top in the water tank 4, moisturizing pipe one end sets up in water tank 4, and the other end stretches out water tank 4, and is equipped with moisturizing ball valve 2 on it.
Further, a heater 5 is arranged below the right side in the water tank 4, one end of the heater 5 extends into the water tank 4, liquid in the water tank 4 is heated when the temperature of the corrosive liquid is lower than 20 ℃, and heating is stopped when the temperature of the corrosive liquid reaches 25 ℃.
Furthermore, the corrosive liquid supplementing pipe is Z-shaped, a manual ball valve 9 is arranged below the supplementing pipe, an electromagnetic valve 12 is arranged above the supplementing pipe, and a magnetic pump 10 is arranged in the middle of the pipeline.
Further, the fixed support 7 and the adjusting support foot 8 are connected by screw threads.
Further, a stirring device is additionally arranged at the bottom of the water tank 4 and is used for stirring the prepared sodium chloride corrosive liquid.
Further, a salt solubility sensor is additionally arranged at the bottom of the water tank 4 and used for controlling the concentration of the prepared sodium chloride corrosive liquid.
Further, still include the sodium chloride corrosive liquid complementary system with level gauge 11 data connection, the sodium chloride corrosive liquid complementary system links to each other with the PLC controller, can send alarm signal to the PLC controller when the liquid level of sodium chloride corrosive liquid is less than low water level floater 5 in the water tank, and the PLC controller control heater 6 closes.
An automatic supplementing method of sodium chloride corrosive liquid comprises the following steps:
A. when the water level in the corrosion test box is lower, the liquid level meter in the test box sends a signal to the PLC controller; the PLC controller sends out an electromagnetic valve control signal and a water pump control signal to the relay of the electromagnetic valve 9 and the relay of the magnetic pump 10 after receiving the signals, the opening of the electromagnetic valve 9 and the starting of the magnetic pump 10 are controlled, and the magnetic pump 10 pumps the corrosive liquid in the water tank 4 into the corrosion test chamber;
B. when the low water level floating ball 5 is at the lowest position, the liquid level meter 11 sends a liquid level electric signal to the PLC controller, the PLC controller controls the water replenishing ball valve 2 to be opened according to the electric signal sent by the low water level floating ball 5, and distilled water or deionized water flows into the water tank 4 and flows to the high water level floating ball 3;
C. when the high water level floating ball 3 completely floats, the PLC closes the water replenishing ball valve 2 according to an electric signal sent by the high water level floating ball 3;
D. the liquid level meter 11 displays the volume of clear water, when the liquid level reaches a preset value, the PLC starts the sodium chloride quantitative box 1 according to an electric signal sent by the liquid level meter 11, quantitative sodium chloride is added into the water tank 4, sodium chloride corrosive liquid with the concentration of 5% is configured according to the volume of distilled water or deionized water, and the sodium chloride corrosive liquid is manually stirred until the sodium chloride corrosive liquid is dissolved;
E. when the liquid level of the sodium chloride corrosive liquid is lower than the low-level floating ball 5 in the water tank, the sodium chloride corrosive liquid supplementing system gives an alarm to send an alarm signal to the PLC, and the PLC controls the heater 6 to be turned off;
F. when the corrosive liquid is stored for a long time and deteriorates, the drain valve 13 is manually controlled to empty the corrosive liquid in the water tank 4.
Compared with the prior art, the invention has the beneficial effects that:
1. the automatic sodium chloride corrosive liquid supplementing equipment is designed in a split structure, can meet the requirement of a single or a plurality of corrosion testing machines on the corrosive liquid, achieves the aims of reducing the floor area of the testing equipment and ensuring the repeatability of the corrosion test;
2. the sodium chloride corrosion liquid with the concentration of 5% can be prepared according to the test requirement and the standard requirement of the test method by utilizing the automatic function of the equipment, and the corrosion liquid is automatically provided for the corrosion tester;
3. the process of manually preparing the sodium chloride corrosive liquid is cancelled, so that the labor intensity is reduced, certain uncertain factors brought to the test by manual operation are avoided, the field operation difficulty and the management difficulty are reduced, and manual errors are avoided;
4. the temperature of a water tank of the sodium chloride corrosive liquid supplementing system is always kept at 20-25 ℃, so that the sodium chloride corrosive liquid is prevented from being frozen and the corrosive liquid is prevented from being crystallized due to temperature change in winter and at night;
5. the automatic corrosive liquid proportioning function is realized, the equipment built-in system is the PLC controller, and the PLC controller sets up and sends solenoid valve control signal and water pump control signal to solenoid valve relay and water pump relay according to corrosive liquid PH value electric signal and liquid level signal to receive solenoid valve relay and water pump relay operating signal from solenoid valve relay and water pump relay, equipment PLC controller shows PH value electric signal, water level electric signal, solenoid valve and water pump operating condition signal on the touch screen, and testing personnel can be right through the touch screen equipment is controlled to reduce experimental external influence factor, improve corrosion test stability and accuracy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of an apparatus for automatically replenishing a sodium chloride etchant;
FIG. 2 electric control principle of operation of automatic sodium chloride corrosive liquid supplementing equipment
FIG. 3 shows the principle of the electric control of the automatic replenishing equipment for sodium chloride corrosive liquid.
In the figure, 1, a sodium chloride quantitative tank 2, a water replenishing ball valve 3, a high water level floating ball 4, a water tank 5, a low water level floating ball 6, a heater 7, a fixed support 8, an adjusting supporting leg 9, a manual ball valve 10, a magnetic pump 11, a liquid level meter 12, an electromagnetic valve 13, a drain valve 14, a conductivity sensor 15 and an acidity sensor are arranged.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in FIG. 1, the automatic sodium chloride corrosive liquid replenishing device can automatically supply replenished sodium chloride corrosive liquid to a main machine of a sodium chloride solution corrosion test. The automatic sodium chloride corrosive liquid supplementing equipment is composed of a sodium chloride quantitative box 1, a water supplementing ball valve 2, a high water level floating ball 3, a water box 4, a low water level floating ball 5, a heater 6, a fixing support 7, an adjusting supporting leg 8, a manual ball valve 9, a magnetic pump 10, a liquid level meter 11, an electromagnetic valve 12, a drain valve 13, an electric conductivity sensor 14 and an acidity sensor 15.
The top in the water tank 4 is provided with a sodium chloride quantitative tank 1, and the left side is provided with a high water level floating ball 3, a conductivity sensor 14, a low water level floating ball 5 and a liquid level meter 11 from high to low in sequence. A water replenishing pipe is externally connected to the upper part of the right side in the water tank 4, one end of the water replenishing pipe is arranged in the water tank 4, the other end of the water replenishing pipe extends out of the water tank 4, and a water replenishing ball valve 2 is arranged on the water replenishing pipe; an acidity sensor 15 and a heater 6 are arranged below the right side in the water tank 4, and one end of the heater 6 extends into the water tank 4 to heat liquid in the water tank 4. The lower part of the left side of the water tank 4 is externally connected with a Z-shaped corrosive liquid supplementing pipe close to the bottom, a manual ball valve 9 is arranged below the supplementing pipe, a sodium chloride corrosive liquid supplementing electronic valve 12 is arranged above the supplementing pipe, and a magnetic pump 10 is arranged in the middle of the pipeline. The electromagnetic valve 12 and the magnetic pump 10 are provided with relays connected with a PLC controller, and can receive electromagnetic valve control signals and magnetic pump control signals sent by the PLC controller and control the opening and closing of the valve of the electromagnetic valve 12 and the work of the magnetic pump 10.
All parts or pipelines of the invention are connected with the water tank 4 by punching holes on the wall plate of the water tank 4, connecting the holes by screw threads and sealing gaps by adopting a sealant.
The sodium chloride quantitative box 1 is used for providing quantitative sodium chloride or other chemicals for preparing the corrosive liquid when the equipment automatically prepares the corrosive liquid, the capacity of a quantitative device can be manufactured according to the capacity of the corrosive liquid prepared by the equipment in proportion, for example, the proportion of sodium chloride, the corrosive liquid, the sodium chloride and deionized water of the sodium chloride is 50 +/-5 g/1000g, 55kg of sodium chloride corrosive liquid is prepared according to the measurement of the neutral salt spray resistance of GB/T1771 colored paint and varnish, and 2.25kg-2.75kg of sodium chloride is placed in the quantitative box. The water replenishing ball valve 2 is used for providing distilled water or ionized water for equipment in the process of preparing corrosive liquid. The high-water-level ball valve 3 and the low-water-level ball valve 5 are used for providing electric signals for starting preparation and stopping preparation of corrosive liquid for equipment. The heater 6 is used for preventing the phenomenon that the temperature of the corrosive liquid is too low in winter so that the corrosive liquid is frozen and crystals are separated out. The manual ball valve 9 is used for preventing the electromagnetic valve 12 from being broken down and other devices on the pipeline from being replaced, and the pipeline is closed to prevent corrosive liquid from flowing out. The magnetic pump 10 is used for starting to convey the corrosive liquid to the corrosion test chamber after the equipment receives an electric signal that the corrosion test chamber is lack of the corrosive liquid. And the liquid level meter 11 is used for monitoring that when corrosive liquid is lower than the low-water-level floating ball 5, equipment is started for protection, and is stopped, so that the equipment is prevented from being damaged due to the fact that the heater 6 continues to heat. The electromagnetic valve 12 is used for opening the equipment after the equipment receives an electric signal that the corrosion test chamber is lack of the corrosion liquid, and closing the equipment after the corrosion test chamber is lack of the corrosion liquid and the signal is stopped. The conductivity sensor 14 and the acidity sensor 15 are used for recording the configuration and the working state of the corrosive liquid, and alarming the abnormal conductivity and acidity of the corrosive liquid.
The high water level floating ball 3 and the low water level floating ball 5 are connected with an external control system through leads. The external control system is a PLC controller which is respectively in data connection with the liquid level meter 11 and the acidity sensor 15 and can receive a liquid level electric signal sent by the liquid level meter 11 and a PH value electric signal sent by the acidity sensor 15. The PLC is also respectively in data connection with the relay of the electromagnetic valve 12 and the relay of the magnetic pump 10, can send electromagnetic valve control signals and water pump control signals to the relay of the electromagnetic valve 12 and the relay of the magnetic pump 10, and receives working signals of the electromagnetic valve 9 relay and the relay of the magnetic pump 10 from the relay of the electromagnetic valve 12 and the relay of the magnetic pump 10. The PLC controller is in control connection with the sodium chloride quantitative box 1 and the water supplementing ball valve 2, and can control the opening and closing of the water supplementing ball valve 2 and the starting and stopping of the sodium chloride quantitative box 1. The PLC is in control connection with the heater 6 and can control the opening and closing of the heater 6. The PLC controller is also connected to a conductivity sensor 14.
The automatic sodium chloride corrosive liquid supplementing device also comprises a sodium chloride corrosive liquid supplementing system in data connection with the liquid level meter 11, the sodium chloride corrosive liquid supplementing system is connected with the PLC, and can send an alarm signal to the PLC when the liquid level of the sodium chloride corrosive liquid is lower than the low-water-level floating ball 5 in the water tank, and the PLC controls the heater 6 to be turned off.
The bottom of the water tank 4 is provided with a fixed support 7, and the bottom of the fixed support is provided with an adjusting supporting leg 8. The bottom of the water tank is externally connected with an L-shaped drain pipe communicated with the bottom of the water tank 4, the drain pipe is fixed on the fixed support 7, and a drain valve 13 is arranged on the drain pipe. The drain valve 13 is used for manually controlling the drain valve 13 to drain the corrosive liquid in the water tank 4 when the corrosive liquid is left for a long time. The fixed support 7 and the adjusting supporting leg 8 are made of 316L stainless steel square tubes through welding. The water tank 4 is fixed with the fixed support 7 through bolts, the fixed support 7 is in threaded connection with the adjusting supporting feet 8, the height of the equipment can be adjusted, and the equipment is in a balanced state. The water tank 4 is made of 8 mm-thick transparent PVC plate plastics through welding, the size of the water tank 4 is determined according to the actual use test period, the allowance is made to exceed 50% of the test requirement, and an empirical formula of 50 liters of 5% sodium chloride corrosive liquid can enable a corrosion tester with a test space of one cubic meter to be used for 48 hours. The heater 6 adopts a titanium tube heater, and is corrosion-resistant and good in strength. The high water level floating ball 3 and the low water level floating ball 5 are both made of PVC plastic floating balls.
According to one embodiment of the invention, a stirring device is additionally arranged at the bottom of the water tank 4 and is used for stirring the prepared sodium chloride corrosive liquid.
In one embodiment of the present invention, a salt solubility sensor is additionally installed at the bottom of the water tank 4 to control the concentration of the prepared sodium chloride corrosive liquid.
As shown in fig. 2-3, when in use, the bottom drain valve 13 is closed, and the sodium chloride corrosive liquid automatic replenishing device is started; when the water level in the corrosion test box is low, the liquid level meter in the test box sends a signal to the PLC controller. The PLC sends out an electromagnetic valve control signal and a water pump control signal to a relay of the electromagnetic valve 9 and a relay of the magnetic pump 10, the opening of the electromagnetic valve 9 and the starting of the magnetic pump 10 are controlled, and the magnetic pump 10 pumps the corrosive liquid in the automatic sodium chloride corrosive liquid supplementing equipment into the corrosion test box to supplement the corrosive liquid.
The PLC controller displays a PH value electric signal, a water level electric signal, an electromagnetic valve and a water pump working state signal on the touch screen, and a tester can control the equipment through the touch screen.
When the low water level floating ball 5 is at the lowest position, the liquid level meter 11 and the acidity sensor 15 respectively send a liquid level electric signal and a PH value electric signal to the PLC; the PLC controller automatically puts distilled water or deionized water to the high water level floating ball 3 through the water replenishing ball valve 2 according to an electric signal sent by the low water level floating ball 5, and when the high water level floating ball 3 completely floats, the PLC controller closes the water replenishing ball valve 2 according to the electric signal sent by the high water level floating ball 3.
The level gauge 12 shows the clear water volume, when the liquid level reached the predetermined value, the PLC controller was according to the electric signal that level gauge 12 sent, start sodium chloride ration case 1, add quantitative sodium chloride in water tank 4, dispose the corrosive solution of 5% concentration according to the volume of distilled water or deionized water, and manual stirring is to dissolving, after the corrosive solution state is stable, according to the corrosion testing machine demand, the PLC controller opens magnetic drive pump 10 and sodium chloride corrosive solution and supplyes electronic valve 12, carry out corrosion test in pouring into the corrosive testing machine with the corrosive solution of 5% concentration into.
When the liquid level of the corrosive solution is lower than the low-water-level floating ball 5 in the water tank, the sodium chloride corrosive solution supplementing system gives an alarm, the heater 6 is turned off, and the water tank 4 is prevented from being damaged due to dry burning of the heater 6; at this point, the test machine still has the corrosive solution to ensure the test is carried out. The overtemperature protection device prevents the heater 6 from being burnt dry to cause fire and personal injury.
When the corrosive liquid is stored for a long time and deteriorates, the drain valve 13 is manually controlled to empty the corrosive liquid in the water tank 4.
In the test, the temperature of the water tank 4 of the sodium chloride corrosive liquid supplementing system is always kept at 20-25 ℃, so that the sodium chloride corrosive liquid is prevented from being frozen and the corrosive solution is prevented from being crystallized due to temperature change in winter and at night, and the test result is prevented from being influenced.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides an automatic supplementary equipment of sodium chloride corrosive liquid which characterized in that: comprises a water tank (4); the device is characterized in that a sodium chloride quantitative box (1), a water replenishing ball valve (2), a high-water-level floating ball (3), a low-water-level floating ball (5), a heater (6), a liquid level meter (11), a conductivity sensor (14) and an acidity sensor (15) are arranged on the water tank (4), a corrosive liquid supplementing pipe is externally connected to the lower part of the water tank (4), a manual ball valve (9), a magnetic pump (10) and an electromagnetic valve (12) are arranged on the supplementing pipe, a fixed support (7) is arranged at the bottom of the water tank (4), a height-adjustable adjusting supporting leg (8) is arranged at the bottom of the fixed support (7), a drain pipe communicated with the bottom of the water tank is arranged on the fixed support (7), and a drain valve (13) is arranged on the drain pipe;
the high water level floating ball (3) and the low water level floating ball (5) are connected with a PLC (programmable logic controller) through leads, the PLC is respectively in data connection with the liquid level meter (11), the conductivity sensor (14) and the acidity sensor (15) and can receive liquid level electric signals, conductivity signals and PH value electric signals sent by the liquid level meter (11), the conductivity sensor (14) and the acidity sensor (15); the PLC is respectively in control connection with the sodium chloride quantitative box (1), the water replenishing ball valve (2) and the heater (6); the PLC is also respectively connected with the relays of the magnetic pump (10) and the electromagnetic valve (12), can receive an electromagnetic valve control signal and a magnetic pump control signal sent by the PLC, controls the opening and closing of the valve of the electromagnetic valve (12) and the work of the magnetic pump (10), and receives work signals of the relay of the electromagnetic valve (9) and the relay of the magnetic pump (10) from the relay of the electromagnetic valve (12) and the relay of the magnetic pump (10).
2. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: and a sodium chloride quantitative box (1) is arranged at the top in the water tank (4).
3. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: a high water level floating ball (3), a conductivity sensor (14), a low water level floating ball (5) and a liquid level meter (11) are sequentially arranged on the left side of the water tank (4) from high to low; the external moisturizing pipe in right side top in water tank (4), moisturizing pipe one end sets up in water tank (4), and the other end stretches out water tank (4), and is equipped with moisturizing ball valve (2) on it.
4. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: heater (5) are equipped with to right side below in water tank (4), and heater (5) one end stretches into water tank (4), heats liquid in water tank (4) when corrosive liquid temperature is less than 20 ℃, and the corrosive liquid temperature stops heating when reaching 25 ℃.
5. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: the corrosive liquid supplementing pipe is Z-shaped, a manual ball valve (9) is arranged below the supplementing pipe, an electromagnetic valve (12) is arranged above the supplementing pipe, and a magnetic pump (10) is arranged in the middle of the pipeline.
6. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: the fixed support (7) and the adjusting supporting leg (8) are connected by adopting threads.
7. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: and a stirring device is additionally arranged at the bottom of the water tank (4) and is used for stirring the prepared sodium chloride corrosive liquid.
8. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: and a salt solubility sensor is additionally arranged at the bottom of the water tank (4) and is used for controlling the concentration of the prepared sodium chloride corrosive liquid.
9. The automatic replenishing equipment of the sodium chloride corrosive liquid according to claim 1, characterized in that: the device is characterized by further comprising a sodium chloride corrosive liquid supplementing system in data connection with the liquid level meter (11), wherein the sodium chloride corrosive liquid supplementing system is connected with the PLC, and can send an alarm signal to the PLC when the liquid level of the sodium chloride corrosive liquid is lower than the low-water-level floating ball (5) in the water tank, and the PLC controls the heater (6) to be turned off.
10. An automatic supplementing method of sodium chloride corrosive liquid is characterized by comprising the following steps:
A. when the water level in the corrosion test box is lower, the liquid level meter in the test box sends a signal to the PLC controller; the PLC receives the signals and then sends electromagnetic valve control signals and water pump control signals to a relay of the electromagnetic valve (9) and a relay of the magnetic pump (10) to control the opening of the electromagnetic valve (9) and the starting of the magnetic pump (10), and the magnetic pump (10) pumps the corrosive liquid in the water tank (4) into the corrosion test box;
B. when the low water level floating ball (5) is at the lowest position, the liquid level meter (11) sends a liquid level electric signal to the PLC, the PLC controls the water replenishing ball valve (2) to be opened according to the electric signal sent by the low water level floating ball (5), distilled water or deionized water flows into the water tank (4) and flows to the high water level floating ball (3);
C. when the high water level floating ball (3) completely floats, the PLC closes the water replenishing ball valve (2) according to an electric signal sent by the high water level floating ball (3);
D. the liquid level meter (11) displays the volume of clear water, when the liquid level reaches a preset value, the PLC starts the sodium chloride quantitative box (1) according to an electric signal sent by the liquid level meter (11), quantitative sodium chloride is added into the water tank (4), sodium chloride corrosive liquid with the concentration of 5% is configured according to the volume of distilled water or deionized water, and the sodium chloride corrosive liquid is manually stirred until the sodium chloride corrosive liquid is dissolved;
E. when the liquid level of the sodium chloride corrosive liquid is lower than the low-water-level floating ball (5) in the water tank, the sodium chloride corrosive liquid supplementing system gives an alarm to send an alarm signal to the PLC, and the PLC controls the heater (6) to be turned off;
F. when the corrosive liquid is stored for a long time and deteriorates, the drain valve (13) is manually controlled to empty the corrosive liquid in the water tank (4).
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| CN202110508703.5A CN113310881A (en) | 2021-05-11 | 2021-05-11 | Automatic sodium chloride corrosive liquid supplementing equipment and method |
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| CN202110508703.5A CN113310881A (en) | 2021-05-11 | 2021-05-11 | Automatic sodium chloride corrosive liquid supplementing equipment and method |
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Cited By (2)
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| CN115096801A (en) * | 2022-06-30 | 2022-09-23 | 郑州大学 | Simulation test method for accelerating chloride corrosion of cement-based material |
| CN116165130A (en) * | 2023-02-27 | 2023-05-26 | 沈阳工业大学 | Steel strand local corrosion test device and method for concrete T-shaped beam |
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