Insulating oil metal content test reagent preparation system and device

Abstract

The embodiment of the invention discloses a system and a device for preparing a reagent for testing the metal content of insulating oil. The system is characterized in that an oil sample injection pipeline inputs an insulating oil sample to be tested into a reaction area; the reagent injection pipeline injects a test reagent corresponding to a to-be-tested insulating oil sample into the oil sample injection pipeline; the waste liquid discharge pipeline is used for discharging residual liquid after the reaction; the electronic metering pump detects the injection volume of the test reagent; an inlet of the reagent injection pipeline is provided with a first electronic valve; the first detection unit is used for preliminarily detecting a to-be-detected insulating oil sample and determining the type of a test reagent corresponding to the to-be-detected insulating oil sample; the intelligent reagent preparation unit controls a first electronic valve corresponding to a test reagent corresponding to the to-be-tested insulating oil sample to be opened according to the type; and the second detection unit determines the metal content in the to-be-detected insulating oil sample according to the reacted solution in the oil sample injection pipeline. The automation degree is high, metering is accurate, the flexibility is good, the efficiency is high, and the detection accuracy and stability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of insulating oil detection, and in particular to a system and a device for preparing a reagent for testing metal content in insulating oil. Background Art

[0002] In the field of metal content detection of insulating oil, the traditional detection method uses a single-channel manual reagent preparation and detection system. This type of system relies on manual operation, can only process one sample at a time, and requires manual preparation of reagents, injection of reagents, reaction and manual detection of metal content.

[0003] The existing single-pipeline detection system includes an oil sample injection pipeline, a reagent injection device, a detection unit and a discharge device. However, since only a single sample can be processed in sequence, the entire detection process is inefficient and difficult to meet the needs of large-scale, high-throughput detection. In addition, manual reagent preparation is not only cumbersome, but also easily leads to inaccurate ratios, making the reaction effect of the reagent unstable, thereby affecting the accuracy of the test results. Moreover, in the prior art, the detection equipment has poor sensitivity to trace metals, especially when detecting low-concentration metal content, it is often difficult to ensure sufficient accuracy and prone to errors. At the same time, due to incomplete pipeline cleaning, cross-contamination often occurs during sample processing, affecting the detection quality of subsequent samples. More importantly, the overall scheduling of the system relies on manual operation, and the resource allocation efficiency is low. It is unable to automatically optimize the order of task execution, resulting in extended operation time and weak fault handling capabilities. These problems make the existing technology unable to meet the needs of modern industry for automation, efficiency and precision when facing complex and diverse detection tasks. Summary of the invention

[0004] The present invention provides a reagent preparation system and device for testing the metal content of insulating oil, which achieves high automation, precise measurement, good flexibility and high efficiency, and improves the accuracy and stability of detection.

[0005] According to one aspect of the present invention, there is provided a system for preparing a reagent for testing metal content in insulating oil, comprising:

[0006] A multi-pipeline processing unit, the multi-pipeline processing unit includes an oil sample injection pipeline, multiple reagent injection pipelines and a waste liquid discharge pipeline, the outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to the injection pump, which is used to input the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject the corresponding test reagent of the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to the discharge pump, which is used to discharge the residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump is arranged in the reagent injection pipeline, which is used to detect the injection volume of the test reagent;

[0007] A plurality of reagent storage tanks, each of which is connected to the inlet of the reagent injection pipeline in a one-to-one correspondence, and each of which is provided with a first electronic valve in a one-to-one correspondence;

[0008] A first detection unit, the first detection unit is used to perform a preliminary detection on the insulating oil sample to be tested, and determine the type of test reagent corresponding to the insulating oil sample to be tested;

[0009] An intelligent reagent preparation unit, the intelligent reagent preparation unit includes a plurality of first control ends, the first control ends are connected to the control ends of the first electronic valves in a one-to-one correspondence, and the intelligent reagent preparation unit is used to control the opening of the first electronic valve corresponding to the test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample injection pipeline; the intelligent reagent preparation unit is connected to the first detection unit and the electronic metering pump;

[0010] The second detection unit is used to determine the metal content in the insulating oil sample to be tested based on the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

[0011] Optionally, the second detection unit includes an electrochemical detection device, which is used to determine the metal content in the insulating oil sample to be tested based on the current or potential changes of the solution after the insulating oil sample to be tested and the corresponding test reagent react before and after the reaction in the oil sample inlet pipeline.

[0012] Optionally, the second detection unit includes a spectral detection device, which is used to determine the metal content in the insulating oil sample to be tested based on the absorbance of a solution after the insulating oil sample to be tested reacts with a corresponding test reagent in the oil sample inlet pipeline.

[0013] Optionally, the absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent satisfies the following relationship:

[0014] A=ε·c·l

[0015] Wherein, A is the absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent, ε is the molar absorption coefficient, c is the concentration of the metal ion, and l is the optical path length.

[0016] Optionally, the injection rate of the test reagent in the reagent injection pipeline satisfies the following relationship:

[0017]

[0018] Among them, Q r is the injection rate of the test reagent in the reagent injection pipeline, V r is the volume of reagent to be injected, t p The injection time of the test reagent in the reagent injection line;

[0019] The intelligent reagent preparation unit controls the injection time of the test reagent in the reagent injection pipeline by controlling the opening time of the first electronic valve;

[0020] The intelligent reagent preparation unit controls the volume of the reagent to be injected by controlling the opening time and opening degree of the first electronic valve.

[0021] Optionally, it further includes an intelligent scheduling and control unit, which includes a plurality of second control terminals, and the second control terminals are connected to the control terminals of the first electronic valves in a one-to-one correspondence;

[0022] The intelligent scheduling and control unit is connected to the intelligent reagent preparation unit, the first detection unit and the second detection unit respectively. The intelligent scheduling and control unit is used to coordinate and control the multi-pipeline processing unit, the intelligent reagent preparation unit, the first detection unit and the second detection unit, and optimize the task allocation and processing sequence of each pipeline through the intelligent scheduling algorithm.

[0023] Optionally, the multi-pipe processing unit further includes an automatic cleaning system, which includes a cleaning control unit, a cleaning liquid pipeline, and a cleaning waste liquid discharge pipeline;

[0024] The cleaning liquid pipeline is connected to the inlet of the oil sample injection pipeline, the inlets of multiple reagent injection pipelines and the inlet of the waste liquid discharge pipeline;

[0025] The cleaning waste liquid discharge pipeline is connected to the outlet of the oil sample injection pipeline, the outlets of multiple reagent injection pipelines and the outlet of the waste liquid discharge pipeline; the cleaning liquid pipeline is provided with a second electronic valve;

[0026] The control end of the cleaning control unit is connected to the control end of the second electronic valve, and is used to control the cleaning liquid to clean the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline after each reaction between the insulating oil sample to be tested and the corresponding test reagent and the detection is completed.

[0027] Optionally, the insulating oil metal content test reagent preparation system further includes an automatic fault detection unit, which is used to detect the flow and pressure of the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline, and issue an alarm message when the flow or pressure of the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline is abnormal;

[0028] The intelligent scheduling and control unit is connected to the automatic fault detection unit to issue an alarm message when the flow or pressure of the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline is abnormal, and optimize the task allocation and processing sequence of each pipeline through the intelligent scheduling algorithm.

[0029] Optionally, the automatic fault detection unit includes an electronic metering pump, a pressure sensor and an alarm unit; the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipelines are all provided with electronic metering pumps and pressure sensors; the intelligent scheduling and control unit is connected to the electronic metering pump, pressure sensor and alarm unit.

[0030] According to another aspect of the present invention, there is provided a device for preparing a reagent for testing metal content in insulating oil, comprising:

[0031] The pipeline module comprises a multi-pipeline processing unit, wherein the multi-pipeline processing unit comprises an oil sample injection pipeline, a plurality of reagent injection pipelines and a waste liquid discharge pipeline, wherein the outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to an injection pump for inputting the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject a test reagent corresponding to the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to a discharge pump for discharging residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump is arranged in the reagent injection pipeline for detecting the injection volume of the test reagent;

[0032] The reagent storage module includes a plurality of reagent storage tanks, the reagent storage tanks are connected to the inlets of the reagent injection pipes one by one, and the inlets of the reagent injection pipes are provided with first electronic valves one by one;

[0033] The first detection module includes a first detection unit, which is used to perform a preliminary detection on the insulating oil sample to be tested and determine the type of test reagent corresponding to the insulating oil sample to be tested;

[0034] The intelligent reagent preparation module includes an intelligent reagent preparation unit, which includes a plurality of first control ends, each of which is connected to a control end of a first electronic valve in a one-to-one correspondence, and the intelligent reagent preparation unit is used to control the opening of a first electronic valve corresponding to a test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample injection pipeline; the intelligent reagent preparation unit is connected to the first detection unit and the electronic metering pump;

[0035] The second detection module includes a second detection unit, which is used to determine the metal content in the insulating oil sample to be tested based on the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

[0036] The insulating oil metal content test reagent preparation system provided by the embodiment of the present invention includes a multi-pipeline processing unit, the multi-pipeline processing unit includes an oil sample injection pipeline, multiple reagent injection pipelines and a waste liquid discharge pipeline, the outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to the injection pump, which is used to input the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject the corresponding test reagent of the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to the discharge pump, which is used to discharge the residual liquid after the insulating oil sample to be tested and the corresponding test reagent react; an electronic metering pump is arranged in the reagent injection pipeline, which is used to detect the injection volume of the test reagent; through the multi-pipeline processing unit, multiple oil samples are processed simultaneously and in parallel, each pipeline does not interfere with each other, has independent flow control and reagent injection functions, the detection speed is greatly improved, and more samples can be processed in a short time, which is suitable for high-throughput detection needs. A plurality of reagent storage tanks, the reagent storage tanks are connected to the inlet of the reagent injection pipeline in a one-to-one correspondence, and the inlet of the reagent injection pipeline is provided with a first electronic valve in a one-to-one correspondence; a first detection unit, the first detection unit is used to perform preliminary detection on the insulating oil sample to be tested, and determine the type of test reagent corresponding to the insulating oil sample to be tested; an intelligent reagent preparation unit, the intelligent reagent preparation unit includes a plurality of first control ends, the first control ends are connected to the control end of the first electronic valve in a one-to-one correspondence, and the intelligent reagent preparation unit is used to control the opening of the first electronic valve corresponding to the test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample injection pipeline; the intelligent reagent preparation unit is connected to the first detection unit and the electronic metering pump; through the intelligent reagent preparation unit, the reagent ratio and injection amount can be automatically and dynamically adjusted according to the oil sample detection requirements, ensuring that the reaction conditions of each sample are adapted to its actual situation. With the help of precise electronic metering pumps and feedback control mechanisms, the system ensures that the accuracy of the reagent is at the microliter level, avoiding the problem of insufficient reaction or excessive reagent caused by human errors, thereby greatly improving the accuracy and stability of the detection. The second detection unit is used to determine the metal content in the insulating oil sample to be tested according to the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline. It achieves high automation, precise measurement, good flexibility and high efficiency, and improves the accuracy and stability of detection.

[0037] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a module schematic diagram of a system for preparing a reagent for testing metal content in insulating oil provided by an embodiment of the present invention;

[0040] Figure 2 It is a module schematic diagram of another insulating oil metal content test reagent preparation system provided by an embodiment of the present invention;

[0041] Figure 3 It is a module schematic diagram of a device for preparing a reagent for testing metal content in insulating oil provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The embodiment of the present invention provides a system for preparing a reagent for testing metal content in insulating oil. Figure 1 This is a schematic diagram of a module of a test reagent preparation system for insulating oil metal content provided by an embodiment of the present invention, with reference to Figure 1 , the insulating oil metal content test reagent preparation system includes:

[0045] A multi-pipe processing unit 10, the multi-pipe processing unit 10 includes an oil sample injection pipeline 11, a plurality of reagent injection pipelines 12 and a waste liquid discharge pipeline 13, the outlet of the reagent injection pipeline 12 is connected to the oil sample injection pipeline 11, and the outlet of the oil sample injection pipeline 11 is connected to the waste liquid discharge pipeline 13; the oil sample injection pipeline 11 is connected to an injection pump 14, which is used to input the insulating oil sample to be tested into the reaction area; the reagent injection pipeline 12 is used to inject the corresponding test reagent of the insulating oil sample to be tested into the oil sample injection pipeline 11; the waste liquid discharge pipeline 13 is connected to a discharge pump 15, which is used to discharge the residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump 16 is arranged in the reagent injection pipeline 12, which is used to detect the injection volume of the test reagent;

[0046] A plurality of reagent storage tanks 20, each of which is connected to the inlet of the reagent injection pipeline 12 in a one-to-one correspondence, and each of the inlet of the reagent injection pipeline 12 is provided with a first electronic valve 21 in a one-to-one correspondence;

[0047] A first detection unit 30, the first detection unit 30 is used to perform a preliminary detection on the insulating oil sample to be tested, and determine the type of test reagent corresponding to the insulating oil sample to be tested;

[0048] The intelligent reagent preparation unit 40 includes a plurality of first control terminals 22, each of which is connected to a control terminal of a first electronic valve 21 in a one-to-one correspondence. The intelligent reagent preparation unit 40 is used to control the first electronic valve 21 corresponding to the test reagent corresponding to the insulating oil sample to be tested to open according to the type of the insulating oil sample to be tested in the oil sample injection pipeline 11; the intelligent reagent preparation unit 40 is connected to the first detection unit 30 and the electronic metering pump 16;

[0049] The second detection unit 50 is used to determine the metal content in the insulating oil sample to be tested according to the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline 11.

[0050] The oil sample inlet pipeline 11 is used to input the oil sample to be tested into the reaction zone. The reagent injection pipeline 12 injects the prepared reagent into the corresponding oil sample through an independent reagent pipeline. The waste liquid discharge pipeline 13 is used to discharge the residual liquid after the reaction to ensure that the reaction zone remains clean and free of residue.

[0051] Specifically, the insulating oil sample to be tested enters the oil sample injection pipeline 11 through the injection pump 14, and is initially detected by the first detection unit 30. The first detection unit 30 determines the type of the corresponding test reagent by analyzing the properties of the oil sample. The intelligent reagent preparation unit 40 receives the detection result of the first detection unit 30, identifies the test reagent matching the insulating oil sample to be tested, and controls the first electronic valve 21 connected to the reagent storage tank 20 corresponding to the matching test reagent to open through the first control terminal 22, and the test reagent is injected into the reagent storage tank 20 through the reagent injection pipeline 12. The insulating oil sample to be tested is mixed with the test reagent in the oil sample injection line 11, and a chemical reaction occurs. The solution after the reaction continues to exist in the oil sample injection line 11 and is transported to the second detection unit 50. The second detection unit 50 analyzes the properties of the solution (such as color, absorbance, etc.), and calculates the metal content in the insulating oil sample to be tested through a calibration curve or other algorithms. After the detection is completed, the residual liquid containing the reaction product is discharged through the waste liquid discharge line 13 by the discharge pump 15.

[0052] The insulating oil metal content test reagent preparation system provided by the embodiment of the present invention comprises a multi-pipe processing unit 10, the multi-pipe processing unit 10 comprises an oil sample injection pipeline 11, a plurality of reagent injection pipelines 12 and a waste liquid discharge pipeline 13, the outlet of the reagent injection pipeline 12 is connected to the oil sample injection pipeline 11, and the outlet of the oil sample injection pipeline 11 is connected to the waste liquid discharge pipeline 13; the oil sample injection pipeline 11 is connected to the injection pump 14, which is used to input the insulating oil sample to be tested into the reaction zone; the reagent injection pipeline 12 is used to inject the corresponding test reagent corresponding to the insulating oil sample to be tested into the reaction zone; The reagent is injected into the oil sample injection pipeline 11; the waste liquid discharge pipeline 13 is connected to the discharge pump 15, which is used to discharge the residual liquid after the insulating oil sample to be tested and the corresponding test reagent react; an electronic metering pump 16 is arranged in the reagent injection pipeline 12, which is used to detect the injection volume of the test reagent; through the multi-pipeline processing unit 10, multiple oil samples are processed in parallel at the same time, each pipeline does not interfere with each other, has independent flow control and reagent injection functions, and the detection speed is greatly improved. More samples can be processed in a short time, which is suitable for high-throughput detection needs. A plurality of reagent storage tanks 20, the reagent storage tanks 20 are connected to the inlet of the reagent injection pipeline 12 in a one-to-one correspondence, and the inlet of the reagent injection pipeline 12 is provided with a first electronic valve 21 in a one-to-one correspondence; a first detection unit 30, the first detection unit 30 is used to perform preliminary detection on the insulating oil sample to be tested, and determine the type of test reagent corresponding to the insulating oil sample to be tested; an intelligent reagent preparation unit 40, the intelligent reagent preparation unit 40 includes a plurality of first control ends 22, the first control ends 22 are connected to the control end of the first electronic valve 21 in a one-to-one correspondence, and the intelligent reagent preparation unit 40 is used to control the opening of the first electronic valve 21 corresponding to the test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample injection pipeline 11; the intelligent reagent preparation unit 40 is connected to the first detection unit 30 and the electronic metering pump 16; through the intelligent reagent preparation unit 40, the reagent ratio and injection amount can be automatically and dynamically adjusted according to the oil sample detection requirements to ensure that the reaction conditions of each sample are adapted to its actual situation. With the help of precise electronic metering pump 16 and feedback control mechanism, the system ensures the accuracy of reagents at the microliter level, avoids the problem of insufficient reaction or excessive reagents caused by human error, and thus greatly improves the accuracy and stability of detection. The second detection unit 50 is used to determine the metal content in the insulating oil sample to be tested according to the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline 11. A high degree of automation, precise metering, good flexibility and high efficiency are achieved, and the accuracy and stability of detection are improved.

[0053] Optionally, the second detection unit 50 includes an electrochemical detection device, which is used to determine the metal content in the insulating oil sample to be tested based on the current or potential changes of the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample inlet pipeline 11 before and after the reaction.

[0054] Specifically, for metal components with low content, the system uses electrochemical detection method to measure the metal content in the oil sample through electrochemical reaction. The change in current or potential difference generated by the oil sample between the electrodes reflects the concentration of metal ions in the oil sample. Detection mechanism: The potential difference between the electrodes is proportional to the concentration of metal ions in the oil sample. The system calculates the metal content in real time by collecting the change in potential difference, which is particularly suitable for detecting trace metal components.

[0055] Optionally, the second detection unit 50 includes a spectral detection device, which is used to determine the metal content in the insulating oil sample to be tested based on the absorbance of a solution after the insulating oil sample to be tested and a corresponding test reagent react in the oil sample inlet pipeline 11.

[0056] Specifically, the concentration of metal ions in insulating oil is detected using spectroscopy. The spectroscopy is based on the Beer-Lambert law. The system calculates the metal concentration in the oil sample by detecting the absorption intensity of the oil sample to light of a specific wavelength.

[0057] Optionally, the absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent satisfies the following relationship:

[0058] A=ε·c·l

[0059] Wherein, A is the absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent, ε is the molar absorption coefficient, c is the concentration of the metal ion, and l is the optical path length.

[0060] Specifically, the detection principle is: after the light source passes through the oil sample, part of the light is absorbed by the metal ions in the oil sample, and the intensity of the absorbed light is proportional to the concentration of the metal ions.

[0061] The high-precision spectral detection and electrochemical detection technology can detect trace metal elements in oil samples, and through real-time collection of spectral detection data, the data is fed back to the intelligent reagent preparation unit 40 for processing, and the injection ratio of subsequent reagents is adjusted to achieve accurate feedback of the detection results. The spectral method is based on the Beer-Lambert law to analyze the absorbance of trace metal ions, and combined with the electrochemical method to supplement the detection of low-concentration samples, ensuring that the system can maintain detection accuracy in various oil samples.

[0062] Optionally, the injection rate of the test reagent in the reagent injection pipeline 12 satisfies the following relationship:

[0063]

[0064] Among them, Q r is the injection rate of the test reagent in the reagent injection pipeline 12, V r is the volume of reagent to be injected, t pThe injection time of the test reagent in the reagent injection pipeline 12;

[0065] The intelligent reagent preparation unit 40 controls the injection time of the test reagent in the reagent injection pipeline 12 by controlling the opening time of the first electronic valve 21;

[0066] The intelligent reagent preparation unit 40 controls the volume of the reagent to be injected by controlling the opening time and opening degree of the first electronic valve 21 .

[0067] Specifically, through the intelligent reagent preparation unit 40, the system can automatically and dynamically prepare reagents according to the detection requirements of the oil sample, and accurately put them into the reagent injection pipeline 12. Each reagent is stored in an independent reagent storage tank 20, equipped with an independent reagent injection pipeline 12 and an electronic metering pump 16. In order to prevent the mixing of different reagents, the switching between reagents is achieved by quickly switching the first electronic valve 21, so that different reagents can be switched and injected into the corresponding oil sample in a short time, ensuring that the reagent injection process is fast and undisturbed. The switching time and path are controlled by a preset program to avoid time waste caused by manual operation or system delays. The injection volume of the reagent is controlled by the electronic metering pump 16, and the metering accuracy can reach the microliter level, which can accurately adjust the injection volume according to the detection requirements of the oil sample.

[0068] Figure 2 Schematic diagram of another module of a test reagent preparation system for insulating oil metal content provided by an embodiment of the present invention, with reference to Figure 2 , further comprising an intelligent scheduling and control unit 60, the intelligent scheduling and control unit 60 comprising a plurality of second control terminals 23, the second control terminals 23 being connected one-to-one with the control terminals of the first electronic valves 21;

[0069] The intelligent scheduling and control unit 60 is connected to the intelligent reagent preparation unit 40, the first detection unit 30 and the second detection unit 50 respectively. The intelligent scheduling and control unit 60 is used to coordinate and control the multi-pipeline processing unit 10, the intelligent reagent preparation unit 40, the first detection unit 30 and the second detection unit 50, and optimize the task allocation and processing sequence of each pipeline through an intelligent scheduling algorithm.

[0070] Specifically, the intelligent scheduling and control unit 60 optimizes the task execution order and resource allocation of the multi-pipeline processing unit 10, the intelligent reagent preparation unit 40, the first detection unit 30 and the second detection unit 50 in real time through the task scheduling algorithm. The intelligent scheduling and control unit 60 ensures that system resources are reasonably allocated among multiple parallel tasks to improve the overall processing efficiency. According to the urgency, processing difficulty and reagent requirements of the oil sample, the system assigns priorities to the multi-pipeline processing unit 10, the intelligent reagent preparation unit 40, the first detection unit 30 and the second detection unit 50. The scheduling algorithm automatically schedules tasks according to priority and preferentially assigns high-priority tasks to idle pipelines. The system can dynamically adjust pipeline tasks according to the progress of the current task. The pipeline that completes the task is immediately assigned the next task, shortening the pipeline idle time and improving the utilization of system resources.

[0071] Optionally, the multi-pipe processing unit 10 further includes an automatic cleaning system, which includes a cleaning control unit 17, a cleaning liquid pipeline 18, and a cleaning waste liquid discharge pipeline 19;

[0072] The cleaning liquid pipeline 18 is connected to the inlet of the oil sample injection pipeline 11, the inlets of the multiple reagent injection pipelines 12 and the inlet of the waste liquid discharge pipeline 13;

[0073] The cleaning waste liquid discharge pipeline 19 is connected to the outlet of the oil sample injection pipeline 11, the outlets of the multiple reagent injection pipelines 12 and the outlet of the waste liquid discharge pipeline 13; the cleaning liquid pipeline 18 is provided with a second electronic valve 24;

[0074] The control end of the cleaning control unit 17 is connected to the control end of the second electronic valve 24, and is used to control the cleaning liquid to clean the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13 after each reaction between the insulating oil sample to be tested and the corresponding test reagent and the detection is completed.

[0075] Specifically, in order to avoid cross contamination of oil samples and reagents between different tests, the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 are equipped with automatic cleaning systems. After each test is completed, the system will automatically switch to the cleaning mode and use a predetermined cleaning liquid (such as an organic solvent or deionized water) to flush the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13. The cleaning liquid enters the system through independent oil sample injection pipelines 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13, and removes residues in the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 through multiple flushing. The system adjusts the type of cleaning liquid and the number of flushing times according to the properties of the oil sample being tested to ensure thorough cleaning.

[0076] The system integrates an automatic cleaning system in the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 to ensure that after each oil sample processing, the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 are cleaned multiple times to remove residues. The cleaning process is fully automated to ensure no cross contamination between different samples and the accuracy of subsequent test results. It greatly reduces manual intervention, prevents the risk of contamination caused by manual operation, and ensures the purity of each test link.

[0077] Optionally, the insulating oil metal content test reagent preparation system further includes an automatic fault detection unit 70, which is used to detect the flow and pressure of the oil sample injection pipeline 11, the multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13, and issue an alarm message when the flow or pressure of the oil sample injection pipeline 11, the multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13 is abnormal;

[0078] The intelligent scheduling and control unit 60 is connected to the automatic fault detection unit 70, and is used to issue an alarm message when the flow or pressure of the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 is abnormal, and optimize the task allocation and processing sequence of each pipeline through the intelligent scheduling algorithm.

[0079] Specifically, when abnormal flow, pressure fluctuation or sensor failure is detected in the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13, the system will issue an alarm and automatically stop the current task, and adjust relevant parameters to resume normal operation. Based on the results of fault detection feedback, the intelligent scheduling and control unit 60 automatically adjusts task scheduling and resource allocation to ensure that the fault does not cause the entire system to stop operating.

[0080] Optionally, the automatic fault detection unit 70 includes an electronic metering pump 16, a pressure sensor 71 and an alarm unit 72, and the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13 are all provided with an electronic metering pump 16 and a pressure sensor 71; the intelligent scheduling and control unit 60 is connected to the electronic metering pump 16, the pressure sensor 71 and the alarm unit 72.

[0081] Specifically, the high-precision electronic metering pump 16 and the pressure sensor 71 used in the oil sample injection pipeline 11, the multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13 can detect the flow rate and pressure of the oil sample injection pipeline 11, the multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13 in real time. When the flow rate or pressure deviates from the set value, the system automatically adjusts the working speed of the injection pump 14 and the discharge pump 15 to maintain a stable state in the oil sample injection pipeline 11, the multiple reagent injection pipelines 12 and the waste liquid discharge pipeline 13.

[0082] Through the dynamic scheduling algorithm of the intelligent scheduling and control unit 60, the task execution order and system resource allocation of the oil sample injection pipeline 11, multiple reagent injection pipelines 12 and waste liquid discharge pipeline 13 are optimized to ensure the overall efficient operation of the system. The real-time priority management and fault detection functions of the tasks can be adjusted in real time according to the current task status and detection feedback, reducing the idle time of the system and improving the overall processing efficiency. In addition, the alarm unit 72 can automatically alarm and adjust the strategy when an abnormality is found to ensure the continuous and stable operation of the system.

[0083] The embodiment of the present invention provides a device for preparing a reagent for testing metal content in insulating oil. Figure 3 This is a schematic diagram of a module of a device for preparing a reagent for testing metal content in insulating oil provided by an embodiment of the present invention, with reference to Figure 3 , the insulating oil metal content test reagent preparation device includes:

[0084] The pipeline module 310 includes a multi-pipeline processing unit, which includes an oil sample injection pipeline, multiple reagent injection pipelines and a waste liquid discharge pipeline. The outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to the injection pump, which is used to input the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject the corresponding test reagent of the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to the discharge pump, which is used to discharge the residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump is provided in the reagent injection pipeline, which is used to detect the injection volume of the test reagent;

[0085] The reagent storage module 320 includes a plurality of reagent storage tanks, each of which is connected to the inlet of the reagent injection pipe in a one-to-one correspondence, and each inlet of the reagent injection pipe is provided with a first electronic valve in a one-to-one correspondence;

[0086] The first detection module 330 includes a first detection unit, which is used to perform a preliminary detection on the insulating oil sample to be tested and determine the type of test reagent corresponding to the insulating oil sample to be tested;

[0087] The intelligent reagent preparation module 340 includes an intelligent reagent preparation unit, which includes a plurality of first control ends, each of which is connected to a control end of a first electronic valve in a one-to-one correspondence, and the intelligent reagent preparation unit is used to control the opening of a first electronic valve corresponding to a test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample injection pipeline; the intelligent reagent preparation unit is connected to the first detection unit and the electronic metering pump;

[0088] The second detection module 350 includes a second detection unit, which is used to determine the metal content in the insulating oil sample to be tested based on a solution obtained after the insulating oil sample to be tested and a corresponding test reagent react in the oil sample injection pipeline.

[0089] Optionally, the pipeline module 310 includes:

[0090] The automatic cleaning unit is used to clean the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline after each reaction between the insulating oil sample to be tested and the corresponding test reagent and the detection is completed.

[0091] Optionally, the second detection module 350 includes:

[0092] The electrochemical detection unit is used to determine the metal content in the insulating oil sample to be tested based on the current or potential changes of the solution after the insulating oil sample to be tested and the corresponding test reagent react before and after the reaction in the oil sample injection pipeline.

[0093] The spectrum detection unit is used to determine the metal content in the insulating oil sample to be tested according to the absorbance of the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

[0094] In some embodiments, the insulating oil metal content test reagent preparation system further includes:

[0095] The intelligent scheduling and control unit is used to coordinate and control the multi-pipeline processing unit, the intelligent reagent preparation unit, the first detection unit and the second detection unit, and optimize the task allocation and processing sequence of each pipeline through an intelligent scheduling algorithm.

[0096] In some embodiments, the insulating oil metal content test reagent preparation system further includes:

[0097] The automatic fault detection unit is used to detect the flow and pressure of the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline, and issue an alarm message when the flow or pressure of the oil sample injection pipeline, multiple reagent injection pipelines and waste liquid discharge pipeline is abnormal.

[0098] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0099] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for preparing reagents for testing metal content in insulating oil, characterized in that: include: A multi-pipe processing unit, the multi-pipe processing unit comprises an oil sample injection pipeline, a plurality of reagent injection pipelines and a waste liquid discharge pipeline, the outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to an injection pump for inputting the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject a test reagent corresponding to the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to a discharge pump for discharging residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump is provided in the reagent injection pipeline for detecting the injection volume of the test reagent; A plurality of reagent storage tanks, each of which is connected to the inlet of the reagent injection pipeline in a one-to-one correspondence, and each of the inlet of the reagent injection pipeline is provided with a first electronic valve in a one-to-one correspondence; A first detection unit, the first detection unit is used to perform a preliminary detection on the insulating oil sample to be tested, and determine the type of test reagent corresponding to the insulating oil sample to be tested; An intelligent reagent preparation unit, the intelligent reagent preparation unit comprising a plurality of first control ends, the first control ends being connected to the control ends of the first electronic valves in a one-to-one correspondence, the intelligent reagent preparation unit being used to control the opening of the first electronic valve corresponding to the test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample inlet pipeline; the intelligent reagent preparation unit being connected to the first detection unit and the electronic metering pump; The second detection unit is used to determine the metal content in the insulating oil sample to be tested based on the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

2. The insulating oil metal content test reagent preparation system according to claim 1, characterized in that: The second detection unit includes an electrochemical detection device, which is used to determine the metal content in the insulating oil sample to be tested based on the current or potential changes of the solution after the insulating oil sample to be tested and the corresponding test reagent react before and after the reaction in the oil sample inlet pipeline.

3. The insulating oil metal content test reagent preparation system according to claim 1, characterized in that: The second detection unit includes a spectrum detection device, which is used to determine the metal content in the insulating oil sample to be tested according to the absorbance of the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

4. The insulating oil metal content test reagent preparation system according to claim 3, characterized in that: The absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent satisfies the following relationship: A=ε·c·l Wherein, A is the absorbance of the solution after the insulating oil sample to be tested reacts with the corresponding test reagent, ε is the molar absorption coefficient, c is the concentration of the metal ion, and l is the optical path length.

5. The insulating oil metal content test reagent preparation system according to claim 1, characterized in that: The injection rate of the test reagent in the reagent injection pipeline satisfies the following relationship: Among them, Q r is the injection rate of the test reagent into the reagent injection pipeline, V r is the volume of reagent to be injected, t p The injection time of the test reagent into the reagent injection pipeline; The intelligent reagent preparation unit controls the injection time of the test reagent in the reagent injection pipeline by controlling the opening time of the first electronic valve; The intelligent reagent preparation unit controls the volume of the reagent to be injected by controlling the opening time and opening degree of the first electronic valve.

6. The insulating oil metal content test reagent preparation system according to claim 1, characterized in that: It also includes an intelligent scheduling and control unit, the intelligent scheduling and control unit includes a plurality of second control terminals, the second control terminals are connected to the control terminals of the first electronic valves in a one-to-one correspondence; The intelligent scheduling and control unit is connected to the intelligent reagent preparation unit, the first detection unit and the second detection unit respectively, and is used to coordinate and control the multi-pipeline processing unit, the intelligent reagent preparation unit, the first detection unit and the second detection unit, and optimize the task allocation and processing order of each pipeline through an intelligent scheduling algorithm.

7. The insulating oil metal content test reagent preparation system according to claim 1, characterized in that: The multi-pipe processing unit also includes an automatic cleaning system, which includes a cleaning control unit, a cleaning liquid pipeline and a cleaning waste liquid discharge pipeline; The cleaning liquid pipeline is connected to the inlet of the oil sample injection pipeline, the inlets of the plurality of reagent injection pipelines and the inlet of the waste liquid discharge pipeline; The cleaning waste liquid discharge pipeline is connected to the outlet of the oil sample injection pipeline, the outlets of the multiple reagent injection pipelines and the outlet of the waste liquid discharge pipeline; the cleaning liquid pipeline is provided with a second electronic valve; The control end of the cleaning control unit is connected to the control end of the second electronic valve, and is used to control the cleaning liquid to clean the oil sample injection pipeline, multiple reagent injection pipelines and the waste liquid discharge pipeline after each reaction and detection between the insulating oil sample to be tested and the corresponding test reagent is completed.

8. The insulating oil metal content test reagent preparation system according to claim 6, characterized in that: The insulating oil metal content test reagent preparation system also includes an automatic fault detection unit, which is used to detect the flow and pressure of the oil sample injection pipeline, the multiple reagent injection pipelines and the waste liquid discharge pipeline, and issue an alarm message when the flow or pressure of the oil sample injection pipeline, the multiple reagent injection pipelines and the waste liquid discharge pipeline is abnormal; The intelligent scheduling and control unit is connected to the automatic fault detection unit, and is used to issue an alarm message when the flow or pressure of the oil sample injection pipeline, the multiple reagent injection pipelines and the waste liquid discharge pipeline is abnormal, and optimize the task allocation and processing sequence of each pipeline through an intelligent scheduling algorithm.

9. The insulating oil metal content test reagent preparation system according to claim 8, characterized in that: The automatic fault detection unit includes an electronic metering pump, a pressure sensor and an alarm unit. The oil sample injection pipeline, multiple reagent injection pipelines and the waste liquid discharge pipeline are all provided with the electronic metering pump and the pressure sensor; the intelligent scheduling and control unit is connected to the electronic metering pump, the pressure sensor and the alarm unit.

10. An insulating oil metal content test reagent preparation device, comprising the insulating oil metal content test reagent preparation system according to any one of claims 1 to 9, characterized in that: include: The pipeline module comprises a multi-pipeline processing unit, wherein the multi-pipeline processing unit comprises an oil sample injection pipeline, a plurality of reagent injection pipelines and a waste liquid discharge pipeline, wherein the outlet of the reagent injection pipeline is connected to the oil sample injection pipeline, and the outlet of the oil sample injection pipeline is connected to the waste liquid discharge pipeline; the oil sample injection pipeline is connected to an injection pump for inputting the insulating oil sample to be tested into the reaction area; the reagent injection pipeline is used to inject a test reagent corresponding to the insulating oil sample to be tested into the oil sample injection pipeline; the waste liquid discharge pipeline is connected to a discharge pump for discharging residual liquid after the insulating oil sample to be tested reacts with the corresponding test reagent; an electronic metering pump is arranged in the reagent injection pipeline for detecting the injection volume of the test reagent; The reagent storage module comprises a plurality of reagent storage tanks, wherein the reagent storage tanks are connected to the inlets of the reagent injection pipes in a one-to-one correspondence, and the inlets of the reagent injection pipes are provided with first electronic valves in a one-to-one correspondence; The first detection module includes a first detection unit, wherein the first detection unit is used to perform a preliminary detection on the insulating oil sample to be tested and determine the type of the test reagent corresponding to the insulating oil sample to be tested; The intelligent reagent preparation module comprises an intelligent reagent preparation unit, wherein the intelligent reagent preparation unit comprises a plurality of first control ends, wherein the first control ends are connected to the control ends of the first electronic valves in a one-to-one correspondence, and the intelligent reagent preparation unit is used to control the opening of the first electronic valve corresponding to the test reagent corresponding to the insulating oil sample to be tested according to the type of the insulating oil sample to be tested in the oil sample inlet pipeline; the intelligent reagent preparation unit is connected to the first detection unit and the electronic metering pump; The second detection module includes a second detection unit, which is used to determine the metal content in the insulating oil sample to be tested based on the solution after the insulating oil sample to be tested and the corresponding test reagent react in the oil sample injection pipeline.

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