CN210465220U - Water chemistry measurement circulation loop and experimental kettle - Google Patents
Water chemistry measurement circulation loop and experimental kettle Download PDFInfo
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- CN210465220U CN210465220U CN201920163942.XU CN201920163942U CN210465220U CN 210465220 U CN210465220 U CN 210465220U CN 201920163942 U CN201920163942 U CN 201920163942U CN 210465220 U CN210465220 U CN 210465220U
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Abstract
The utility model discloses a hydrochemistry measures circulation circuit and experiment cauldron, including the water tank, circulating pump, hydrochemistry parameter measurement device and the hydrochemistry parameter adjustment device that connect gradually, form circulation circuit, control system is connected with hydrochemistry parameter adjustment device, and control system obtains each parameter of hydrochemistry that hydrochemistry parameter measurement device collected to send control signal to hydrochemistry parameter adjustment device through the operation, thereby make the hydrochemistry numerical value remain invariable all the time. The utility model discloses still communicate and form the circulation in this circulation circuit and the experiment cauldron, can make medium parameter unanimous with the return circuit in the cauldron, guarantee that the parameter is invariable, improved the accuracy of simulation environment and the precision of experiment.
Description
Technical Field
The utility model relates to a circulation circuit, in particular to hydrochemistry measures circulation circuit.
Background
The stress corrosion experimental equipment is generally aimed at the experiment of materials in a corrosion medium environment, and the general simulated medium environment relates to the fields of nuclear power, thermal power, oceans, petrochemicals and the like, such as a high-temperature high-pressure ultrapure water environment, a low-temperature high-pressure seawater environment, a high-temperature steam boiler environment, a normal-temperature normal-pressure seawater environment and the like. For each environment simulation, various chemical parameters in water are consistent with the simulated environment, for example, a low-temperature high-pressure seawater environment, seawater contained in an experimental kettle not only needs to meet the temperature and pressure requirements, but also needs to ensure the concentration of Na ions, Mg ions, Cl ions and other ions in the water, the pH value of the seawater, the conductivity and other parameters.
At present, the domestic simulated environment generally uses an experimental kettle, corrosive media are injected into the kettle, and various chemical parameters are adjusted. A static kettle is provided, namely a tested material is suspended in an experimental kettle, no stress is applied, and only the influence of a corrosive medium on the material is tested. The electromagnetic stirrer is generally added in the kettle, the stirring impeller in the kettle is driven to enable a medium in the kettle to flow, corrosion products generated by the tested material are uniformly mixed in the medium in the kettle, and the over-high concentration of the corrosion products nearby the tested material is prevented. For stress corrosion equipment, materials in the kettle need a motor outside the kettle to apply stress, a pull rod needs to be arranged on the wall of the kettle, a large space is occupied, and a stirrer cannot be used any more. So far, in the experimental process, the sample is corroded by the medium to produce corrosion products, and simultaneously, materials such as an experimental kettle, a clamp and a pull rod are also slightly corroded to cause that the water chemistry is changed all the time during the operation, dissolved oxygen and dissolved hydrogen are also changed, and along with the lapse of time, various parameters of the experimental medium are not parameters required during the initial experiment, so that the accuracy of the simulated environment and the accuracy of the experiment are influenced.
Even if the static kettle uses the electromagnetic stirrer, the water chemical parameters in the kettle can change along with the time, and the problem is not substantially solved.
Disclosure of Invention
The utility model provides a hydrochemistry measures circulation circuit locates it in order to solve the above-mentioned defect among the prior art on the experiment cauldron.
The technical scheme of the utility model as follows:
a water chemistry measurement circulation loop comprises a water tank, a circulation pump, a water chemistry parameter measuring device, a water chemistry parameter adjusting device and a control system;
the water tank, the circulating pump, the water chemistry parameter measuring device and the water chemistry parameter adjusting device are sequentially connected to form a circulating loop, the control system is connected with the water chemistry parameter adjusting device, the control system obtains water chemistry parameters collected by the water chemistry parameter measuring device and sends control signals to the water chemistry parameter adjusting device through operation, and therefore the water chemistry value is kept constant all the time.
The utility model discloses a concrete embodiment still include with the water tank connect the moisturizing pump.
The utility model discloses a concrete embodiment, still include with the water tank connect the drain valve and discharge valve.
The utility model discloses a specific embodiment, water chemistry parameter measurement device including measuring different water chemistry parameter's electrode or sensor and data acquisition instrument, measuring electrode or sensor survey after each parameter value, send to the data acquisition instrument, the data acquisition instrument with data processing back feedback to control system.
The utility model discloses a concrete embodiment, measuring electrode or sensor be one or more in pH electrode, conductivity electrode, dissolved oxygen electrode, dissolved hydrogen electrode, online water quality analyzer, silicate, phosphate analyzer, sodium table, silicon table, calcium table, fluorine table, chloride measuring device or the suspended solid measuring device.
The utility model discloses a specific embodiment, water chemistry parameter adjusting device include reagent bottle, gas mass flow meter, filter group and ion exchange resin, wherein, filter group with ion exchange resin establish ties on circulation loop, the reagent bottle with gas mass flow meter all with the water tank connect.
In one embodiment of the present invention, the reagent bottle and the water tank are provided with a peristaltic pump therebetween.
The utility model discloses a concrete embodiment, the water tank in be equipped with the bubbler, gaseous warp gaseous mass flow meter get into the water tank, and warp the bubbler disperse.
The utility model also discloses an experiment cauldron, the water chemistry measure in the circulation circuit the water tank with the experiment cauldron connect, form the circulation circuit.
The utility model discloses a concrete embodiment, the water tank with the experimental kettle between be equipped with the measuring pump.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a hydrochemistry measures circulation loop sets up hydrochemistry parameter measurement device and hydrochemistry parameter adjusting device on the return circuit, through measuring and regulation control to continuous circulation flow makes the parameter in the medium parameter in the pipeline and the water tank can keep unanimous. Therefore, the water chemistry measurement circulation loop is communicated with the interior of the experimental kettle to form circulation, so that parameters of a medium in the kettle can be consistent with the loop, the parameters are ensured to be constant, and the accuracy of a simulated environment and the accuracy of the experiment are improved.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a schematic structural view of an experimental kettle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an experimental kettle for simulating a high-temperature high-pressure ultrapure water environment for a nuclear power material according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an experimental kettle for simulating a low-temperature high-pressure deep sea environment according to an embodiment of the present invention.
The labels in the figure are: 1-water tank, 11-water replenishing pump, 12-water draining valve, 13-air discharging valve, 14-foam maker, 2-circulating pump, 3-water chemical parameter measuring device, 31-measuring electrode or sensor, 32-data collecting instrument, 4-water chemical parameter adjusting device, 41-reagent bottle, 42-gas mass flowmeter, 43-filter group, 44-ion exchange resin, 45-peristaltic pump, 5-control system, 6-metering pump, 7-high pressure pump, 71-pressure gauge, 72-pressure sensor, 73-blasting valve, 74-heat exchanger, 75-high pressure back pressure valve, 76-preheater and 77-cooler.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. In practical applications, the improvement and adjustment made by those skilled in the art according to the present invention still belong to the protection scope of the present invention.
For better illustration of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings.
Referring to fig. 1, a water chemistry measurement circulation loop of the present invention includes a water tank 1, a circulation pump 2, a water chemistry parameter measuring device 3, a water chemistry parameter adjusting device 4 and a control system 5;
wherein the water tank 1, the circulating pump 2, the water chemistry parameter measuring device 3 and the water chemistry parameter adjusting device 4 are sequentially connected to form a closed circulating loop, and the control system 5 is connected with the water chemistry parameter adjusting device 4;
the control system 5 obtains the water chemistry parameters collected by the water chemistry parameter measuring device 3, and sends control signals to the water chemistry parameter adjusting device 4 through operation, so that the water chemistry value is always kept constant.
The water tank 1 is used for storing and adjusting experimental media, the bottom end of the water tank 1 is connected with the circulating pump 2, the circulating pump 2 pumps out the media and circulates along the pipeline, and the media flow back to the water tank 1 after passing through the water chemistry parameter measuring device 3 and the water chemistry parameter adjusting device 4. Due to the continuous circulation flow, the medium parameters in the pipeline and the parameters in the water tank can be kept consistent.
Preferably, a water replenishing pump 11 connected with the water tank 1 is further included for injecting the liquid medium into the water tank 1.
Preferably, a drain valve 12 and a vent valve 13 are also included, connected to the tank 1, for regulating the medium inventory of the circulation circuit.
In another embodiment, the water chemical parameter measuring device 3 comprises electrodes or sensors 31 for measuring different water chemical parameters and a data collecting instrument 32, the measuring electrodes or sensors 31 measure the values of the parameters and transmit the values to the data collecting instrument 32, and the data collecting instrument 32 processes the data and feeds the processed data back to the control system 5.
The measuring electrode or sensor 31 is one or more of a pH electrode, a conductivity electrode, a dissolved oxygen electrode, a dissolved hydrogen electrode, an online water quality analyzer, a silicate, a phosphate analyzer, a sodium meter, a silicon meter, a calcium meter, a fluorine meter, a chloride measuring device or a suspended matter measuring device. The type of the measuring electrode or the sensor is selected correspondingly according to the simulated medium environment, if the pH needs to be measured, the pH electrode is correspondingly arranged, the concentration of sodium ions is measured, and a sodium meter and the like are correspondingly arranged.
In another embodiment, the water chemical parameter adjusting device 4 comprises a reagent bottle 41, a gas mass flow meter 42, a filter group 43 and an ion exchange resin 44, wherein the filter group 43 and the ion exchange resin 44 are connected in series on a circulation loop, and the reagent bottle 41 and the gas mass flow meter 42 are both connected with the water tank 1. Wherein, reagent bottle 41 can be multiunit, parallelly connected ground with the water tank be connected, reagent bottle 41 has put multiple reagent to the regulation medium parameter is invariable.
The filter group 43 mainly includes filters such as PP cotton, activated carbon, and ultrafiltration membrane, and is used to filter impurities in the medium, rust generated by corrosion, and the like.
The gas mass flow meter 42 can control the flow of the gas introduced into the water tank 1, and if the dissolved oxygen content of the medium needs to be adjusted, the mixed gas of nitrogen and hydrogen can be introduced into the water tank 1; when the content of dissolved hydrogen needs to be adjusted, mixed gas of nitrogen and oxygen can be introduced.
The control system 5 is a central part of the whole loop, collects various parameters of water chemistry from the water chemistry parameter measuring device 3, sends control signals to the peristaltic pump 45, the gas mass flow meter 42 and the like through calculation, and the peristaltic pump 45 and the mass flow meter 42 control the flow of reagent or gas according to the signals so as to adjust the pH value, the conductivity, the dissolved oxygen, the dissolved hydrogen and other parameters in the medium. Thus, the parameter acquisition and control system and the parameter adjustment form a closed loop system, so that the water chemistry parameter value is always kept constant.
Preferably, a peristaltic pump 45 is arranged between the reagent bottle 41 and the water tank 1, so that the reagent is pumped into the water tank 1 and matched with the ion exchange resin 44, and the pH value and the conductivity in the medium can be adjusted.
Preferably, the water tank 1 is internally provided with a foam generator 14, gas enters the water tank 1 through the gas mass flow meter 42 and is diffused through the foam generator 14 to form countless tiny bubbles to be blown into water, so that the solubility of the gas is increased, and the efficiency of oxygen removal or hydrogen removal is higher.
The utility model also discloses an experiment cauldron, the water chemistry measure in the circulation circuit water tank 1 with the experiment cauldron connect, form the circulation circuit.
The utility model discloses a concrete embodiment, water tank 1 with the experimental kettle between be equipped with measuring pump 6.
After the medium in the water tank 1 circulates for a period of time through the loop, the water chemical parameters meet the experimental requirements, and then the metering pump 6 can be started to inject the medium into the experimental kettle. A closed loop is formed between the experimental kettle and the water tank, and the metering pump 6 is always in an open state in the experimental process, so that the medium in the experimental kettle is always updated, and the stability of the water chemical parameters is ensured.
The present invention will be further described below with reference to specific embodiments.
Example 1 high-temperature high-pressure ultrapure water environment for nuclear power materials
The experimental kettle adopts a high-temperature high-pressure kettle, simulates the working condition of a nuclear power primary loop or a nuclear power secondary loop, uses an ultrapure water medium, and controls parameters such as the conductivity, the pH value, dissolved oxygen and dissolved hydrogen in water. The water chemistry measurement circulation loop principle is as described above, and the loop of the experimental kettle and the water tank is shown in figure 2:
a high-pressure pump 7 is arranged in front of the autoclave and used for injecting ultrapure water in the water tank 1 into the experimental autoclave and forming a loop with the water tank 1 through a return pipeline. A pressure gauge 71 and a pressure sensor 72 are arranged on the high-pressure kettle, so that the pressure in the high-pressure kettle can be measured; a burst valve 73 is provided to prevent danger from overpressure in the tank. A preheater 76 is arranged on an inlet pipeline of the high-temperature high-pressure kettle, so that the temperature of an inlet medium is consistent with the temperature in the kettle, and the temperature in the kettle is prevented from being fluctuated by cold water; a cooler 77 is arranged on the reflux pipeline, so that the temperature of the high-temperature water in the kettle can be reduced to normal temperature; a high-pressure back pressure valve 75 is provided to adjust the pressure in the tank to be constant, and when the pressure exceeds the set pressure, the ultrapure water automatically overflows to the water tank 1.
Example 2 Low temperature high pressure deep sea Environment
The experimental kettle adopts a low-temperature high-pressure kettle to simulate the deep sea marine environment, and uses an ultrapure water medium as a substrate to control parameters such as the conductivity, the pH value, the sodium ion concentration, the magnesium ion concentration, the chloride concentration and the like in water. The principle of the water chemistry measurement circulation loop is the same as that described above, except that the water chemistry parameter measuring device is provided with a pH value electrode, a conductivity electrode, a sodium meter, a magnesium meter and a chloride measuring device, and the water chemistry parameter adjusting device is correspondingly provided with a pH value reagent bottle, a conductivity reagent bottle, a sodium chloride reagent bottle and a magnesium chloride reagent bottle. The experimental kettle and tank circuit is shown in figure 3:
a high-pressure pump 7 is arranged in front of the autoclave and used for injecting ultrapure water in the water tank 1 into the experimental autoclave and forming a loop with the water tank 1 through a return pipeline. A pressure gauge 71 and a pressure sensor 72 are arranged on the autoclave 7, so that the pressure in the autoclave can be measured; a burst valve 73 is provided to prevent danger from overpressure in the tank. The heat exchanger 74 is arranged on the reflux pipeline, so that the temperature of the low-temperature water in the kettle can be raised to the normal temperature; a high-pressure back pressure valve 75 is provided to adjust the pressure in the tank to be constant, and when the pressure exceeds the set pressure, the ultrapure water automatically overflows to the water tank 1.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A water chemistry measurement circulation loop is characterized by comprising a water tank, a circulation pump, a water chemistry parameter measuring device, a water chemistry parameter adjusting device and a control system;
the water tank, the circulating pump, the water chemistry parameter measuring device and the water chemistry parameter adjusting device are sequentially connected to form a circulating loop, the control system is connected with the water chemistry parameter adjusting device, the control system obtains water chemistry parameters collected by the water chemistry parameter measuring device and sends control signals to the water chemistry parameter adjusting device through operation, and therefore the water chemistry value is kept constant all the time.
2. The water chemistry measurement circulation loop of claim 1 further comprising a make-up pump connected to said water tank.
3. The water chemistry measurement circulation loop of claim 1 further comprising a drain valve and a vent valve connected to said water reservoir.
4. A water chemistry measurement cycle loop as claimed in any one of claims 1 to 3, wherein said water chemistry parameter measuring means comprises electrodes or sensors for measuring different water chemistry parameters and a data acquisition instrument, wherein said electrodes or sensors are arranged to measure values of said parameters and to transmit said values to said data acquisition instrument, and said data acquisition instrument is arranged to process and feed said data back to said control system.
5. The water chemistry measurement circulation loop of claim 4, wherein said measuring electrodes or sensors are one or more of pH electrodes, conductivity electrodes, dissolved oxygen electrodes, dissolved hydrogen electrodes, on-line water quality analyzers, silicates, phosphate analyzers, sodium surface, silicon surface, calcium surface, fluorine surface, chloride measuring devices, or suspended matter measuring devices.
6. A water chemistry measurement circulation loop according to any one of claims 1 to 3 wherein said water chemistry parameter adjustment means comprises a reagent bottle, a gas mass flow meter, a filter bank and an ion exchange resin, wherein said filter bank and said ion exchange resin are connected in series on the circulation loop, and said reagent bottle and said gas mass flow meter are both connected to said water tank.
7. The water chemistry measurement circulation loop of claim 6 wherein a peristaltic pump is disposed between said reagent bottle and said water tank.
8. The water chemistry measurement circulation loop of claim 6 wherein said water tank has a bubbler disposed therein, gas entering the water tank through said gas mass flow meter and being emitted through said bubbler.
9. An experimental kettle, characterized in that the water tank in the water chemistry measurement circulation loop of any one of claims 1 to 8 is connected with the experimental kettle to form a circulation loop.
10. The experimental kettle of claim 9, wherein a metering pump is further arranged between the water tank and the experimental kettle.
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| CN201920163942.XU CN210465220U (en) | 2019-01-30 | 2019-01-30 | Water chemistry measurement circulation loop and experimental kettle |
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| CN201920163942.XU CN210465220U (en) | 2019-01-30 | 2019-01-30 | Water chemistry measurement circulation loop and experimental kettle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781120A (en) * | 2020-06-24 | 2020-10-16 | 吉林大学 | Testing method for thin film package |
| CN113008716A (en) * | 2021-02-20 | 2021-06-22 | 上海交通大学 | Thin-walled tube stress corrosion crack initiation high-flux experimental device and experimental method |
| CN113008717A (en) * | 2021-02-20 | 2021-06-22 | 上海交通大学 | Experimental device and experimental method for simulating nuclear reactor wear |
| CN113433056A (en) * | 2021-08-09 | 2021-09-24 | 三门核电有限公司 | System for evaluating aging state of non-metallic material under ETA + NH3 condition |
| CN113686765A (en) * | 2021-08-24 | 2021-11-23 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
| CN113686774A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Corrosion testing device and downhole operation equipment |
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2019
- 2019-01-30 CN CN201920163942.XU patent/CN210465220U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781120A (en) * | 2020-06-24 | 2020-10-16 | 吉林大学 | Testing method for thin film package |
| CN113008716A (en) * | 2021-02-20 | 2021-06-22 | 上海交通大学 | Thin-walled tube stress corrosion crack initiation high-flux experimental device and experimental method |
| CN113008717A (en) * | 2021-02-20 | 2021-06-22 | 上海交通大学 | Experimental device and experimental method for simulating nuclear reactor wear |
| CN113433056A (en) * | 2021-08-09 | 2021-09-24 | 三门核电有限公司 | System for evaluating aging state of non-metallic material under ETA + NH3 condition |
| CN113686765A (en) * | 2021-08-24 | 2021-11-23 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
| CN113686765B (en) * | 2021-08-24 | 2022-03-01 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
| CN113686774A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Corrosion testing device and downhole operation equipment |
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