CN115015372A - Device and method for measuring content of ferromagnetic particles in solution on line - Google Patents
Device and method for measuring content of ferromagnetic particles in solution on line Download PDFInfo
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- CN115015372A CN115015372A CN202210578244.2A CN202210578244A CN115015372A CN 115015372 A CN115015372 A CN 115015372A CN 202210578244 A CN202210578244 A CN 202210578244A CN 115015372 A CN115015372 A CN 115015372A
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- 239000002245 particle Substances 0.000 title claims abstract description 60
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- 238000005259 measurement Methods 0.000 claims description 23
- 230000005291 magnetic effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
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- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
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- 229910000851 Alloy steel Inorganic materials 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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Abstract
The invention discloses a device for measuring the content of ferromagnetic particles in a solution on line, wherein the solution circulates in a main pipeline, the device comprises a branch pipeline and a measuring module positioned on the branch pipeline, and two ends of the branch pipeline are both communicated with the main pipeline; the measuring module includes measuring the pipe, it includes the solenoid subassembly to measure the pipe, the solenoid subassembly includes the permanent magnet pipe and is located a plurality of solenoids in the permanent magnet pipe, the axial direction of solenoid is on a parallel with the axial direction of permanent magnet pipe, form the confession in the solenoid the passageway of solution circulation. According to the device and the method for measuring the content of the ferromagnetic particles in the solution on line, the branch pipeline and the measuring module are arranged, so that technical support is provided for real-time state monitoring of the two-loop water sample, the content of the ferromagnetic particles in the water sample can be monitored in real time, and key parameters are provided for evaluation and analysis of the chemical regulation effect of the two-loop water.
Description
Technical Field
The invention belongs to the technical field of nuclear power detection, and particularly relates to a device for online measurement of ferromagnetic particle content in a solution of a secondary loop of a pressurized water reactor nuclear power station and a method for measuring ferromagnetic particle content by using the device.
Background
At present, the materials of fluid conveying systems such as a two-loop pipeline, a heater, a drainage system and the like of a domestic pressurized water reactor nuclear power station are mostly carbon steel and low alloy steel, and measurement of iron corrosion products generated in the fluid conveying process, particularly monitoring of ferromagnetic particles is a key parameter for evaluating the two-loop water chemistry adjusting effect.
At present, the two-loop solution is mainly sampled on site, and then the ferromagnetic particles in the water sample are characterized by utilizing laboratory equipment to achieve the detection purpose of the ferromagnetic particles. Typical limitations of this approach are: the ferromagnetic particles in the solution in the two loops are randomly distributed, and the test method is separated from the field, so that the test period is long, and the number of the ferromagnetic particles cannot be accurately monitored in real time.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention provides an apparatus and a method for online measuring the content of ferromagnetic particles in a solution, which are used to solve the problem that the prior art cannot perform real-time characterization on the content of ferromagnetic particles in a solution of a secondary loop of a nuclear power plant.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention aims to provide a device for measuring the content of ferromagnetic particles in a solution on line, wherein the solution circulates in a main pipeline, the device comprises a branch pipeline and a measuring module positioned on the branch pipeline, and both ends of the branch pipeline are communicated with the main pipeline;
the measuring module includes measuring the pipe, it includes the solenoid subassembly to measure the pipe, the solenoid subassembly includes the permanent magnet pipe and is located a plurality of solenoids in the permanent magnet pipe, the axial direction of solenoid is on a parallel with the axial direction of permanent magnet pipe, form the confession in the solenoid the passageway of solution circulation.
According to some preferred aspect of the present invention, a solenoid includes a coil and an insulating part wrapped outside the coil, both ends of the coil including a tab, wherein the tab of one end extends to the other end of the coil; the length of the insulating part is greater than that of the coil, and one end of the insulating part is flush with one end of the coil. In some embodiments of the invention, the insulating part is made of erosion-resistant material, one end of the insulating part is flush with one end of the coil, and since the length of the insulating part is greater than that of the coil, the other end of the insulating part is a part more than the coil, and the end of the solenoid corresponding to the more part is the head end of the solenoid, i.e. the end from which the solution flows in when flowing to the measuring tube. The excess insulating portion has erosion resistance, and therefore, the time during which the end portion of the coil is damaged by erosion can be prolonged.
According to some preferred embodiment aspects of the present invention, the inner diameter of the solenoid is gradually increased outward from the center of the permanent magnet tube; and connecting materials are filled between the adjacent solenoids. In some embodiments of the present invention, since the flow rate of the solution in the central portion of the measuring tube is lower than the flow rate of the solution in the circumferential portion of the measuring tube when the solution circulates in the measuring tube, the inner diameter of the solenoid in the central portion is set to be the smallest and gradually increased from the center of the circle to the outside, so that the ferromagnetic particles of small size can pass through the solenoid from the center and the ferromagnetic particles of large size can pass through the solenoid having a larger inner diameter near the outside due to gravity. Of course, in some other embodiments of the present invention, the inner diameters of the plurality of solenoids in the permanent magnet tube may not be arranged in the above manner, and the solenoids with different inner diameters may be directly arranged in the permanent magnet tube, so that even if ferromagnetic particles block the solenoids, the ferromagnetic particles can be removed by post-maintenance.
According to some preferred aspect of the present invention, the permanent magnet tube includes a permanent magnet and a housing wrapped outside the permanent magnet, the insulating portion of the solenoid adjacent to the housing being connected to the housing; the length of the solenoid is less than or equal to the length of the housing. When the solution containing ferromagnetic particles passes through the measuring tube, the ferromagnetic particles can be magnetized due to the strong magnetic field of the permanent magnet, so that the magnetic flux of the coil is changed, weak voltage is generated at two ends of the coil, and the content of the ferromagnetic particles can be further obtained according to analysis after the weak voltage is captured, amplified and recorded, so that the method for measuring the ferromagnetic particles is realized. If the length of the solenoid is greater than the length of the housing, the connection between the measurement tube and the branch tube is affected.
According to some preferred aspect of the present invention, the solenoid has an inner diameter of 2-10mm, and the coil has a length less than or equal to that of the permanent magnet. The permanent magnets generate a strong magnetic field which causes a change in the magnetic flux inside the coil, so that the length of the coil cannot exceed the length of the permanent magnets.
According to some preferred embodiments of the present invention, the insulating portions and the housing are made of erosion-resistant materials, which are the same as the connecting material, so as to protect the permanent magnet and the coil from erosion, and the connecting material between the housing and the adjacent insulating portions is filled at the same time, so that the plurality of solenoids and the permanent magnet tubes are integrally formed.
According to some preferred aspect of the invention, the measurement pipe includes a pipe body, an axial direction of the solenoid is parallel to an axial direction of the pipe body, and the axial direction of the pipe body is parallel to a flow direction of the solution flowing through the measurement pipe. In some embodiments of the invention, the flange connecting surfaces are arranged at two ends of the pipe body, and the whole measuring pipe is connected with the branch pipes through the flange connecting surfaces, so that the pipe body is convenient to disassemble and has good sealing performance. In addition, the outer wall of the pipe body is ferromagnetic and can be used for isolating a magnetic field, namely the external magnetic field is isolated from the magnetic field generated by the permanent magnet.
According to some preferred aspect of the present invention, one end of the tube body is provided with a stopper, an outer wall of the stopper is connected to an inner wall of the tube body, an end of the stopper is flush with an end of the tube body, and the stopper is used for placing the solenoid assembly. The solenoid assembly is located entirely inside the tube body.
According to some preferred aspects of the invention, the measuring module comprises a filter for trapping ferromagnetic particles. In some embodiments of the invention, the filter element includes a first filter portion and a second filter portion, each for capturing ferromagnetic particles of different sizes. The function of the filter element is provided with two aspects: firstly, because the ferromagnetic particles have no benefit to the fluid transmission of the whole two loops, the ferromagnetic particles are collected and intensively disposed by using a filter element, and are prevented from flowing back to the main pipeline along with the solution; secondly, after the ferromagnetic particles are collected through the filter element, the distribution positions of the ferromagnetic particles with different sizes on the filter element are subjected to statistical analysis, and reference opinions can be provided for the arrangement of the solenoids in the permanent magnet pipe (how the solenoids with different inner diameters are arranged).
According to some preferred aspects of the invention, the measuring module further comprises a measuring element, and the connector is electrically connected with the measuring element.
According to some preferred implementation aspects of the invention, the branch pipeline comprises a first branch, a second branch and a third branch which are communicated in sequence, the first branch is located between the inlet of the main pipeline and the second branch, the third branch is located between the second branch and the outlet of the main pipeline, and the measuring module is located in the second branch.
According to some preferred aspects of the invention, there is provided a first electrical module and a second electrical module in the first branch and the third branch, respectively; the first electrical module is used for controlling the flow, pressure and on-off time of the solution flowing from the first branch to the measuring module, and the second electrical module is used for controlling the flow, pressure and on-off time of the solution flowing from the second branch to the outlet of the main pipeline.
According to some preferred embodiment aspects of the invention, the first electrical module comprises a first pump and a first flow meter, and the second electrical module comprises a second pump and a second flow meter.
According to some preferred implementation aspects of the present invention, a cooling component is disposed in the first branch, a heating component is disposed in the second branch, the cooling component is located between the inlet of the main pipe and the first pump, and the heating component is located between the second pump and the outlet of the main pipe. In some embodiments of the invention, an electrically operated valve and a compressor are further arranged between the cooling assembly and the heating assembly to form a heat exchange module together. Namely, the cooling component is a first heat exchanger, and the heating component is a second heat exchanger. When the temperature of the solution in the main pipeline is higher than 100 ℃, the heat exchange module is used for reducing the temperature of the solution flowing from the inlet of the main pipeline to the first pump to be less than 100 ℃, and then heating the temperature of the solution flowing out of the second pump to be the same as the temperature of the solution in the main pipeline. The heat exchange module is mainly used for being opened when the temperature of the solution in the main pipeline is higher (higher than 100 ℃) so as to exchange heat, and when the temperature of the solution in the main pipeline is lower than 100 ℃, the heat exchange module does not need to be opened.
According to some preferred embodiment aspects of the invention, a first thermometer is arranged at one end of the cooling assembly close to the first pump, and a second thermometer is arranged at one end of the heating assembly far away from the second pump. The setting of the position of first thermometer and second thermometer can more accurately monitor the temperature of the solution that flows to first pump to and flow out and the temperature of the solution that converges into the trunk line by the second pump. When the temperature does not meet the requirement, the first pump or the second pump is continuously closed, so that the solution is continuously cooled or heated until the temperature reaches the standard, and the pump can be opened to circulate the solution. When the heat exchange module needs to be started, a refrigerant needs to be added into the heat exchanger, and heat is converted between the first heat exchanger and the second heat exchanger.
The principle of the heat exchange process is as follows: compressing the gas, increasing the temperature; otherwise the temperature decreases. The whole heat exchange process is as follows:
(1) closing an electric valve in the heat exchange module;
(2) starting a compressor, extracting gas in the first heat exchanger, and compressing the gas into the second heat exchanger to increase the temperature and pressure of the gas (if the refrigerant is water, the gas is liquefied after passing through the electric valve);
(3) the second heat exchanger transfers heat to liquid flowing in the branch pipeline at the same position as the second heat exchanger in a heat conduction mode; the temperature of the refrigerant in the second heat exchanger is reduced;
(4) the electric valve is opened, and the refrigerant in the second heat exchanger flows to the first heat exchanger through the electric valve because the refrigerant is in a high-pressure state; the pressure of the refrigerant in the pipeline between the electric valve and the first heat exchanger is reduced, and the temperature of the refrigerant is further reduced (if the refrigerant is water, the refrigerant is vaporized after passing through the electric valve);
(5) the liquid flowing in the branch pipe at the same position as the first heat exchanger heats the refrigerant in the first heat exchanger in a heat conduction manner, so that the temperature of the refrigerant is increased and the refrigerant is vaporized. The compressor draws the gaseous refrigerant and the heat exchange circuit completes one cycle and enters the next cycle.
Another object of the present invention is to provide a method for on-line measuring the content of ferromagnetic particles in a solution by using the above device, which includes two methods, one is passive and the other is active.
The passive measurement method comprises the following steps: when the solution flows to the measuring pipe from the inlet of the main pipeline through the branch pipeline, ferromagnetic particles in the solution can be magnetized by a strong magnetic field generated by the permanent magnet, so that the change of the magnetic flux of the coil in the solenoid is caused, weak voltage is generated at two ends of the coil, and because two joints of the coil are connected with the measuring element, the weak voltage is subjected to signal capture and amplification through the measuring element, and the obtained voltage signal is recorded in real time and is compared with a voltage signal calibration curve, so that the content of the ferromagnetic particles in the solution can be obtained.
The active measurement method comprises the following steps: the solenoid is electrified with a pulse changing current, when the solution passes through the solenoid, ferromagnetic particles in the solution can cause the inductance of a coil in the solenoid to increase, the inductance value is measured and recorded in real time, and the content of the ferromagnetic particles in the solution can also be obtained by comparing with an inductance signal calibration curve.
Specifically, the voltage signal calibration curve and the inductance signal calibration curve in the invention are obtained by adding spherical particles with known sizes into the branch pipeline, enabling the spherical particles to pass through the measuring pipe, simulating the electric signal characteristics of ferromagnetic particles to be detected and recording the signal value. The operation steps are as follows:
(1) when the branch pipeline is not communicated with the main pipeline, carrying out factory calibration on signals, closing valves at an inlet and an outlet of the main pipeline and taking down the device;
(2) selecting ferromagnetic material (preferably Fe) 4 O 3 ) Processing the mixture into spherical particles, and selecting particles with the diameter of 0.5-100 mu m when leaving factory for calibration;
(3) the measuring device is connected to a tank of pure water of relatively large capacity (preferably 1m in capacity) 3 ) So that the pure water can flow in the branch pipeline;
(4) taking out the filter element, starting the first pump and the second pump, dividing the spherical particles prepared in advance into different batches when the flow rate (preferably set to be 1m/s) is stable according to the conditions of the same particle size and the different particle sizes, wherein the total weight of each batch is preferably 10g, putting the spherical particles with certain mass (preferably 1mg) into the pure water tank at the interval of 5-60 min for a single batch, and continuously putting the spherical particles after a circuit part acquires a stable signal until the whole batch is put;
(5) closing the first pump and the second pump, closing the valve after the filter element, installing the filter element, then opening the first pump and the second pump, and filtering and collecting the spherical particles in the pure water by using the filter element; when the circuit part can not collect signals all the time, the filtering and collecting can be considered to be finished; repeating the steps (4) and (5) until all batches of spherical particles are completely put;
(6) recording parameters such as the flow rate of the solution, the total amount of particles in the solution, a voltage value, an inductance value and the like, and respectively generating a voltage signal calibration curve and an inductance signal calibration curve.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: according to the device and the method for measuring the content of the ferromagnetic particles in the solution on line, provided by the invention, through the arrangement of the branch pipeline and the measuring module, technical support is provided for the real-time state monitoring of the two-loop water sample, the content of the ferromagnetic particles in the water sample can be monitored in real time, and key parameters are provided for the evaluation and analysis of the chemical regulation effect of the two-loop water.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for on-line measurement of ferromagnetic particle content in a solution according to a preferred embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a first perspective of a measurement tube in a preferred embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a second perspective view of a measurement tube in a preferred embodiment of the invention;
FIG. 4 is a schematic view of the construction of the tube body of the measurement tube in the preferred embodiment of the invention;
FIG. 5 is a schematic diagram of the construction of the coil within the solenoid in a preferred embodiment of the present invention;
in the drawing, a main pipeline-1, a first branch-2, a first pump-21, a first flowmeter-22, a second branch-3, a measuring pipe-31, a pipe body-311, a permanent magnet-312, a shell-313, an insulating part-314, a coil-315, a connector-316, a blocking part-317, a filter part-32, a third branch-4, a second pump-41, a second flowmeter-42, a heat exchange module-5, a first heat exchanger-51, a second heat exchanger-52, a compressor-53, a first thermometer-54 and a second thermometer-55.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: device for on-line measuring content of ferromagnetic particles in solution
As shown in fig. 1 to 5, the device for online measuring the content of ferromagnetic particles in a solution of this embodiment includes a branch pipe, and a measuring module and a heat exchange module 5 located on the branch pipe, wherein both ends of the branch pipe are communicated with a main pipe 1, and the solution in the two loops circulates in the main pipe 1. The branch pipeline comprises a first branch 2, a second branch 3 and a third branch 4, the first branch 2 is positioned between the inlet of the main pipeline 1 and the second branch 3, and the third branch 4 is positioned between the second branch 3 and the outlet of the main pipeline 1; a first electrical module is arranged in the first branch 2, the measuring module is positioned in the second branch 3, a second electrical module is arranged in the third branch 4, and the heat exchange module 5 is positioned between the first branch 2 and the third branch 4.
The measuring module comprises a measuring tube 31, a measuring element (not shown) and a filter element 32. As shown in fig. 2 and 3, the measurement pipe 31 includes a pipe body 311 and a solenoid assembly inside the pipe body 311. The solenoid assembly includes a permanent magnet tube and a plurality of solenoids inside the permanent magnet tube, an axial direction of the solenoids being parallel to an axial direction of the permanent magnet tube, the axial direction of the solenoids being parallel to an axial direction of the tube body 311, the axial direction of the tube body 311 being parallel to a flow direction of the solution flowing through the measurement tube 31; the solenoid defines a passage for the solution to flow through. The solenoid includes a coil 315 and an insulating part 314 wrapped outside the coil 315, and two ends of the coil 315 include connectors 316, wherein the connector 316 at one end extends to the other end of the coil 315, so that the two connectors 316 are located at the same end of the coil 315 (as shown in fig. 5), and the two connectors 316 on one solenoid are electrically connected to the measuring element. The length of the insulating part 314 is greater than that of the coil 315, one end of the insulating part 314 is flush with one end of the coil 315, the other end of the insulating part 314 is longer than the coil 315 by a part, the end of the solenoid corresponding to the longer part is the head end of the solenoid, namely, when the solution flows to the measuring pipe 31, the solution flows in from the end, and the longer part of the insulating part 314 has erosion resistance, so that the time for the end of the coil 315 to be damaged due to erosion can be prolonged. Further, in order to place the solenoid assembly in the tube body 311, a stopper 317 (shown in fig. 4) is provided at one end of the tube body 311, an outer wall of the stopper 317 is connected with an inner wall of the tube body 311, and an end of the stopper 317 is flush with an end of the tube body 311, so that the solenoid assembly can be entirely placed on the stopper 317.
The solenoids of the embodiment are uniformly arranged in the permanent magnet pipe at intervals, connecting materials are filled between the adjacent solenoids, the solenoids are arranged according to the mode that the inner diameter of each solenoid is gradually increased from the circle center of the permanent magnet pipe to the outside, and the solenoids with the same inner diameter are positioned on the circumference of the same circle; the inner diameter of the solenoid is 2-10 mm. The connection material of the present embodiment is the same as the material for forming the insulating portion 314, and is also an erosion resistant material.
As shown in fig. 2 and 3, the permanent magnet tube in this embodiment includes a permanent magnet 312 and a casing 313 made of erosion-resistant material and wrapped around the exterior of the permanent magnet 312, and an insulating portion 314 of the solenoid adjacent to the casing 313 is connected to the casing 313. The length of the solenoid is set to be less than or equal to the length of the housing 313 to avoid the solenoid from affecting the connection between the measurement pipe 31 and the branch pipe. In addition, the length of the coil 315 is set to be less than or equal to the length of the permanent magnet 312, and since the permanent magnet 312 has a strong magnetic field, ferromagnetic particles in the solution are magnetized when passing through the measurement pipe 31, thereby causing a change in magnetic flux in the coil 315, and generating a weak voltage across the coil 315. Therefore, it is necessary to ensure that the coil 315 capable of generating a change in magnetic flux is located within the range of the strong magnetic field generated by the permanent magnet 312.
As shown in fig. 1, the filtering element 32 is located behind the measuring pipe 31, and the filtering element 32 is mainly used for capturing ferromagnetic particles with different sizes, so that on one hand, the captured ferromagnetic particles can be collected and disposed of in a centralized manner, and are prevented from flowing back to the main pipe 1 with the solution; on the other hand, the distribution positions of ferromagnetic particles of different sizes on the filter member 32 can be statistically analyzed to provide reference for the arrangement of the solenoids inside the permanent magnet tube (how the solenoids of different inner diameters are arranged).
As shown in fig. 1, the first electrical module of the present embodiment comprises a first pump 21 and a first flow meter 22, which are used together to control the flow rate, pressure and on-off time of the solution flowing from the first branch 2 to the measurement module; the second electrical module comprises a second pump 41 and a second flow meter 42 which are jointly used to control the flow, pressure and on-off time of the solution flowing from the second branch 3 to the outlet of the main pipe 1. The first pump 21 and the second pump 41 can be used for controlling the solution circulation, and the first flow meter 22 and the second flow meter 42 can be used for controlling the flow amount of the solution.
As shown in fig. 1, the heat exchange module 5 of the present embodiment includes a first heat exchanger 51, a second heat exchanger 52, a compressor 53 and an electrically operated valve, the first heat exchanger 51 is located between the inlet of the main pipe 1 and the first pump 21, the second heat exchanger 52 is located between the second pump 41 and the outlet of the main pipe 1, and the compressor 53 and the electrically operated valve are located between the first heat exchanger 51 and the second heat exchanger 52. The first heat exchanger 51, the electrically operated valve, the second heat exchanger 52 and the compressor 53 are connected to form a closed circuit. A first thermometer 54 is disposed at an end of the first heat exchanger 51 near the first pump 21, and a second thermometer 55 is disposed at an end of the second heat exchanger 52 far from the second pump 41. When the temperature of the solution in the main pipe 1 is higher than 100 ℃, the heat exchange module 5 needs to be started, refrigerant is added into the heat exchanger, heat conversion is performed between the first heat exchanger 51 and the second heat exchanger 52, the heat exchange module 5 is used for reducing the temperature of the solution flowing from the main pipe 1 to the first pump 21 to be less than 100 ℃, and the temperature of the solution flowing out from the second pump 41 is heated to be the same as the temperature of the solution in the main pipe 1. When the solution temperature in the main pipe is lower than 100 ℃, the heat exchange module 5 does not need to be opened. The first thermometer 54 and the second thermometer 55 are positioned to more accurately monitor the temperature of the solution flowing to the first pump 21 and the temperature of the solution flowing out of the second pump 41 and merging into the main pipe 1. And when the temperature does not meet the requirement, continuously closing the first pump 21 or the second pump 41 to continuously cool or heat the solution until the temperature reaches the standard, and opening the pumps to circulate the solution.
The second embodiment: method for measuring content of ferromagnetic particles in solution on line
Example three: method for online measurement of content of ferromagnetic particles in solution
After the terminal 316 of the coil 315 is electrically connected to the measuring element, a pulsed current is supplied to the measuring tube 31; the solution flowing in the main pipe 1 passes through the first heat exchanger 51 from the inlet of the main pipe 1, flows through the first electrical module, the measuring pipe 31, the filtering element 32 and the second electrical module, passes through the second heat exchanger 52 and flows out from the outlet of the main pipe 1; when the solution passes through the solenoid in the measuring tube 31, the ferromagnetic particles in the solution will cause the inductance of the coil 315 of the solenoid to increase, and the variation of the inductance is recorded in real time and compared with the inductance signal calibration curve, so as to obtain the content of the ferromagnetic particles in the solution.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (17)
1. The device for measuring the content of ferromagnetic particles in a solution on line is characterized by comprising a branch pipeline and a measuring module positioned on the branch pipeline, wherein two ends of the branch pipeline are communicated with the main pipeline;
the measuring module comprises a measuring tube, the measuring tube comprises a solenoid assembly, the solenoid assembly comprises a permanent magnet tube and a plurality of solenoids arranged in the permanent magnet tube, the axial direction of the solenoids is parallel to the axial direction of the permanent magnet tube, and a channel for the circulation of the solution is formed in the solenoids.
2. The apparatus of claim 1, wherein the solenoid comprises a coil and insulation wrapped around the outside of the coil, the coil comprising tabs at both ends, wherein the tabs at one end extend to the other end of the coil; the length of the insulating part is greater than that of the coil, and one end of the insulating part is flush with one end of the coil.
3. The apparatus of claim 2, wherein the inner diameter of the solenoid gradually increases from the center of the permanent magnet tube outward; and connecting materials are filled between the adjacent solenoids.
4. The apparatus of claim 3, wherein the permanent magnet tube comprises a permanent magnet and a housing wrapped around the exterior of the permanent magnet, the insulation of the solenoid adjacent the housing being attached to the housing; the length of the solenoid is less than or equal to the length of the housing.
5. The apparatus of claim 4, wherein the solenoid has an inner diameter of 2-10mm, and the length of the coil is less than or equal to the length of the permanent magnet.
6. The apparatus of claim 4, wherein the insulating portion and the housing are made of the same material as the connecting material.
7. The apparatus of claim 1, wherein the measurement tube comprises a tube body, an axial direction of the solenoid being parallel to an axial direction of the tube body, the axial direction of the tube body being parallel to a flow direction of the solution flowing through the measurement tube.
8. The apparatus of claim 7, wherein one end of the tube body is provided with a blocking portion, an outer wall of the blocking portion is connected with an inner wall of the tube body, an end of the blocking portion is flush with an end of the tube body, and the blocking portion is used for placing the solenoid assembly.
9. The device of claim 1, wherein the measurement module comprises a filter for trapping ferromagnetic particles.
10. The apparatus of claim 2, wherein the measurement module further comprises a measurement element, and the connector is electrically connected to the measurement element.
11. The device according to claim 1, characterized in that said branch duct comprises a first branch, a second branch and a third branch which are in communication in sequence, said first branch being located between the inlet of said main duct and the second branch, said third branch being located between said second branch and the outlet of said main duct, said measuring module being located in said second branch.
12. The apparatus of claim 11, comprising first and second electrical modules located in the first and third branches, respectively; the first electrical module is used for controlling the flow, pressure and on-off time of the solution flowing from the first branch to the measuring module, and the second electrical module is used for controlling the flow, pressure and on-off time of the solution flowing from the second branch to the outlet of the main pipeline.
13. The apparatus of claim 12, wherein the first electrical module comprises a first pump and a first flow meter, and the second electrical module comprises a second pump and a second flow meter.
14. The apparatus of claim 13, wherein a cooling assembly is disposed in the first branch, a heating assembly is disposed in the second branch, the cooling assembly is located between the main pipe inlet and the first pump, and the heating assembly is located between the second pump and the main pipe outlet.
15. The apparatus of claim 14, wherein an end of the cooling assembly proximate the first pump is provided with a first temperature gauge, and an end of the heating assembly distal the second pump is provided with a second temperature gauge.
16. A method for on-line measurement of the content of ferromagnetic particles in a solution using a device according to any of claims 1-15, characterized in that the solution flowing from the inlet of the main pipe through the branch pipe to the measuring pipe causes a change in the magnetic flux in the solenoid, a voltage is generated across the solenoid, the voltage is recorded and compared with a calibration curve of the voltage signal to obtain the content of ferromagnetic particles.
17. A method for on-line measurement of ferromagnetic particle content in a solution using the device according to any of claims 1-15, characterized in that a pulsed current is applied to the solenoid, which causes the inductance of the coil in the solenoid to increase as the solution passes through the solenoid, and the value of this inductance is measured and recorded in real time and compared to a calibration curve of the inductance signal to obtain the ferromagnetic particle content.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120826A1 (en) * | 2010-03-31 | 2011-10-06 | Siemens Aktiengesellschaft | Method for determining the quantity of magnetic particles in a suspension |
| CN104502242A (en) * | 2014-11-20 | 2015-04-08 | 北京航空航天大学 | On-line abrasive particle monitoring method and monitoring sensor based on bilateral symmetric structure of the radial magnetic field |
| CN106568691A (en) * | 2016-10-20 | 2017-04-19 | 江苏大学镇江流体工程装备技术研究院 | Oil liquid abrasive particle online monitoring apparatus |
| US20170269036A1 (en) * | 2014-11-28 | 2017-09-21 | Parker Hannifin Manufacturing Limited | Sensor Apparatus |
| CN108663213A (en) * | 2018-04-26 | 2018-10-16 | 中广核研究院有限公司 | A kind of online particle monitoring systems and method of nuclear power plant's Emergency diesel lubricating oil |
| CN109813762A (en) * | 2019-03-14 | 2019-05-28 | 大连海事大学 | A kind of inductance type magnetic nano material sensor and production method |
| US20200056975A1 (en) * | 2017-12-05 | 2020-02-20 | Fatri United Testing & Control (Quanzhou) Technologies Co., Ltd. | Magnetic induction particle detection device and concentration detection method |
| US20200088350A1 (en) * | 2018-09-19 | 2020-03-19 | Airbus Helicopters | Magnetic device for capturing metal wear particles in suspension in a lubrication fluid |
| CN113984600A (en) * | 2021-10-27 | 2022-01-28 | 北京信息科技大学 | High-sensitivity metal wear particle online detection sensor based on magnetostatic iron |
| CN114088612A (en) * | 2021-11-15 | 2022-02-25 | 华润电力（海丰）有限公司 | Pipeline bypass corrosion testing device and testing method thereof |
-
2022
- 2022-05-25 CN CN202210578244.2A patent/CN115015372A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120826A1 (en) * | 2010-03-31 | 2011-10-06 | Siemens Aktiengesellschaft | Method for determining the quantity of magnetic particles in a suspension |
| CN104502242A (en) * | 2014-11-20 | 2015-04-08 | 北京航空航天大学 | On-line abrasive particle monitoring method and monitoring sensor based on bilateral symmetric structure of the radial magnetic field |
| US20170269036A1 (en) * | 2014-11-28 | 2017-09-21 | Parker Hannifin Manufacturing Limited | Sensor Apparatus |
| CN106568691A (en) * | 2016-10-20 | 2017-04-19 | 江苏大学镇江流体工程装备技术研究院 | Oil liquid abrasive particle online monitoring apparatus |
| US20200056975A1 (en) * | 2017-12-05 | 2020-02-20 | Fatri United Testing & Control (Quanzhou) Technologies Co., Ltd. | Magnetic induction particle detection device and concentration detection method |
| CN108663213A (en) * | 2018-04-26 | 2018-10-16 | 中广核研究院有限公司 | A kind of online particle monitoring systems and method of nuclear power plant's Emergency diesel lubricating oil |
| US20200088350A1 (en) * | 2018-09-19 | 2020-03-19 | Airbus Helicopters | Magnetic device for capturing metal wear particles in suspension in a lubrication fluid |
| CN109813762A (en) * | 2019-03-14 | 2019-05-28 | 大连海事大学 | A kind of inductance type magnetic nano material sensor and production method |
| CN113984600A (en) * | 2021-10-27 | 2022-01-28 | 北京信息科技大学 | High-sensitivity metal wear particle online detection sensor based on magnetostatic iron |
| CN114088612A (en) * | 2021-11-15 | 2022-02-25 | 华润电力（海丰）有限公司 | Pipeline bypass corrosion testing device and testing method thereof |
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