Oil sample collection method

Abstract

The invention discloses an oil sample collection method, belongs to the technical field of transformers, and mainly aims to improve the purity and quality of an oil sample. According to the main technical scheme, the oil sample collecting method is applied to the oil sample collecting device, and the oil sample collecting device comprises an oil collecting pipe, an oil well pump, a vacuum pump, an oil drain pump, a four-channel connector and a three-channel connector. The four-channel connector is respectively communicated with an outlet pipeline of the oil well pump, a circulating pipeline of the oil collecting pipe, an inlet pipeline of the vacuum pump and the three-channel connector, and the three-channel connector is also communicated with an outlet pipeline of the vacuum pump and an inlet pipeline of the oil drain pump; the method comprises the following steps: removing waste oil entering the oil sample collection device from an oil storage container in an initial stage of operation; cleaning the oil collecting pipe; the oil collecting pipe is vacuumized; and injecting an oil sample into the oil collecting pipe.

Description

Technical Field

[0001] The present application belongs to the technical field of transformers, and specifically relates to an oil sample collection method. Background Art

[0002] In the research, production and quality control of transformers and related fields, oil sampling is a vital basic work. Accurate and reliable oil sampling plays a decisive role in subsequent oil analysis, quality inspection and equipment operation status evaluation.

[0003] Traditional oil sample collection methods have many limitations. In the early days, operators often relied on simple manual tools, such as droppers and oil barrels, to collect oil. This method is not only inefficient, but also easily interfered with by human factors, such as differences in the technical level of operators and negligence during operation, resulting in insufficient representativeness of the collected oil samples. During the collection process, if the container is not thoroughly cleaned, residual impurities or other substances may contaminate the oil sample, affecting the accuracy of subsequent analysis results. Summary of the invention

[0004] In view of this, the present application provides an oil sample collection method, the main purpose of which is to improve the purity and quality of the oil sample.

[0005] In order to achieve the above objectives, this application mainly provides the following technical solutions:

[0006] The present application provides an oil sample collection method, which is applied to an oil sample collection device, wherein the oil sample collection device comprises an oil collecting pipe, an oil pump, a vacuum pump, an oil discharge pump, a four-channel connector and a three-channel connector, wherein the four-channel connector is respectively connected to an outlet pipeline of the oil pump, a circulation pipeline of the oil collecting pipe, an inlet pipeline of the vacuum pump and the three-channel connector, and the three-channel connector is also connected to an outlet pipeline of the vacuum pump and an inlet pipeline of the oil discharge pump; the method comprises:

[0007] The waste oil entering the oil sample collection device from the oil storage container at the initial stage of the cleaning operation;

[0008] Cleaning the oil collecting pipe;

[0009] Performing a vacuum operation on the oil collecting pipe;

[0010] Inject the oil sample into the oil collecting pipe.

[0011] Optionally, the waste oil entering the oil sample collection device from the oil storage container in the initial stage of the cleaning operation includes:

[0012] Start the oil suction pump and the oil discharge pump, and turn off the vacuum pump.

[0013] Optionally, the cleaning of the oil collecting pipe includes:

[0014] Starting the oil pump, and shutting down the vacuum pump and the oil drain pump;

[0015] Turn off the oil pump and the vacuum pump, and start the oil discharge pump; or turn off the oil pump, and start the vacuum pump and the oil discharge pump.

[0016] Optionally, the vacuuming operation on the oil collecting pipe includes:

[0017] The oil pump is turned off, and the vacuum pump and the oil discharge pump are started.

[0018] Optionally, injecting the oil sample into the oil collecting pipe comprises:

[0019] Start the oil pump, and turn off the vacuum pump and the oil discharge pump.

[0020] Optionally, the oil sample collection device further includes an ultrasonic pipeline cleaner. Before the oil sample collection operation starts and / or after the oil sample collection operation is completed, the method further includes:

[0021] Start the ultrasonic pipe cleaner, the oil extraction pump, the vacuum pump and the oil discharge pump.

[0022] Optionally, the oil sample collection device further includes a flow sensor and a pressure sensor, and the flow sensor and the pressure sensor are both arranged on a pipeline connecting the oil pump and the four-channel connector.

[0023] Optionally, the oil sample collection device further comprises a filter, which is arranged at the outlet of the outlet pipeline of the oil drain pump and is detachably connected to the outlet pipeline of the oil drain pump.

[0024] Optionally, the oil sample collection device further comprises a shell, the oil collecting pipe is detachably arranged in the shell, an observation chamber cover is rotatably connected to the shell at a position relative to the oil collecting pipe, and the observation chamber cover is made of a transparent material.

[0025] Optionally, the oil sample collection device also includes a touch screen and a controller, the touch screen is arranged on the shell, the touch screen is used for human-computer interaction, the controller is arranged in the shell, the controller is electrically connected to the touch screen, the oil pump, the vacuum pump and the oil discharge pump respectively, and the controller is used to respond to instructions issued by the touch screen to switch the working states of the oil pump, the vacuum pump and the oil discharge pump.

[0026] By means of the above technical solution, the present application has at least the following beneficial effects:

[0027] The oil sample collection method provided in the embodiment of the present application is standardized and reliable in the entire oil sample collection process, from removing waste oil, cleaning the oil collection pipe, vacuuming to injecting the oil sample, reducing the randomness and uncertainty of human operation. Different operators can collect oil samples that meet the requirements relatively stably according to this method, thereby improving the purity and quality of the oil sample. Specifically, by removing the waste oil that enters the oil sample collection device from the oil storage container at the initial stage of the operation, it is possible to avoid mixing the waste oil with the target oil sample, ensuring that the collected oil sample can truly reflect the original characteristics of the oil product, and ensuring the accuracy of the subsequent various analysis and detection results based on the oil sample; by cleaning the oil collection pipe before collection, it is possible to remove impurities that may remain in the oil collection pipe, other substances left over from previous collection, etc., to prevent them from contaminating the newly collected oil sample, so that the collected oil sample composition is more consistent with the actual situation of the oil product; by vacuuming the oil collection pipe, it is possible to remove the air in the oil collection pipe, to avoid air mixing into the oil sample to change its physical and chemical properties, so that the state of the oil sample during the collection process is more stable and closer to the actual storage state, further improving the accuracy of the collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A flow chart of an oil sample collection method according to an optional embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of an oil sample collection device according to an optional embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the structure of the internal components of an oil sample collection device of an optional embodiment of the present application;

[0031] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0032] Figure 5 This is a schematic structural diagram of an oil drain pump outlet pipeline according to an optional embodiment of the present application.

[0033] The reference numerals are:

[0034] 1. Oil collecting pipe; 2. Oil pump; 3. Vacuum pump; 4. Oil discharge pump; 5. Four-channel connector; 6. Three-channel connector; 7. Ultrasonic pipe cleaner; 8. Flow sensor; 9. Pressure sensor; 10. Filter; 11. Housing; 12. Observation compartment cover; 13. Touch screen; 14. Controller. DETAILED DESCRIPTION

[0035] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0036] See also Figure 1 As shown, in this embodiment, a method for collecting oil samples is provided, the method comprising:

[0037] Step S101: cleaning the waste oil entering the oil sample collection device from the oil storage container at the initial stage of the operation.

[0038] The oil sample collection method provided in the embodiment of the present application can be applied to fields such as monitoring the operating status of a transformer, and can be specifically applied to an oil sample collection device for a transformer. Figure 2 , Figure 3 and Figure 4 As shown, the oil sample collection device includes an oil collecting pipe 1, an oil pump 2, a vacuum pump 3, an oil discharge pump 4, a four-channel connector 5 and a three-channel connector 6. The four-channel connector is respectively connected to the outlet pipeline of the oil pump 2, the circulation pipeline of the oil collecting pipe 1, the inlet pipeline of the vacuum pump 3 and the three-channel connector. The three-channel connector is also connected to the outlet pipeline of the vacuum pump 3 and the inlet pipeline of the oil discharge pump 4.

[0039] Among them, the main function of the oil pump 2 is to provide power to extract the oil sample from the oil storage container such as the transformer and transport it out through its outlet pipeline. The four-channel connector 5 is connected to it, which means that the oil extracted by the oil pump 2 can flow to other components or pipelines connected to it through the four-channel connector 5, laying the foundation for the subsequent flow of oil samples in the entire device. For example, when the oil sampling operation begins, the oil pump 2 works, and the oil sample enters the four-channel connector 5 from its outlet pipeline, and can then be guided to the corresponding position according to the set process.

[0040] The circulation pipeline of the oil collecting pipe 1 is connected to the four-channel connector 5, so that the relevant medium (such as cleaning fluid, oil sample, etc.) can enter the oil collecting pipe 1 from the four-channel connector 5, so as to facilitate some operations on the oil collecting pipe 1. For example, when cleaning the oil collecting pipe 1, the cleaning fluid can be injected into the oil collecting pipe 1 through the circulation pipeline to achieve the cleaning effect, ensuring that the oil collecting pipe 1 is in a good state for accurate oil sample collection.

[0041] Among them, the vacuum pump 3 is responsible for creating a specific pressure environment in the entire device, specifically, extracting air and reducing the air pressure in the relevant parts. Its inlet pipeline is connected to the four-channel connector 5, so that the vacuum pump 3 can extract air from the corresponding parts (such as the oil collecting pipe 1, etc.) through the pipeline connected to the four-channel connector 5 to achieve vacuum operation. For example, when the oil collecting pipe 1 is vacuumed before collecting oil samples, the vacuum pump 3 can extract the air in the oil collecting pipe 1 through this connected pipeline, creating conditions for the subsequent oil samples to enter the oil collecting pipe 1 smoothly and cleanly.

[0042] The connection between the four-channel connector 5 and the three-channel connector further expands the pipeline network in the entire device, so that the oil sample, air or other media can be circulated and processed in a wider range according to the predetermined process. For example, in some operations involving air exhaust or oil sample transfer, the connection between the two connectors can realize the reasonable delivery of the corresponding substances from one part of the device to another part.

[0043] Among them, when the vacuum pump 3 is working, it will discharge the extracted air, and its outlet pipe is connected to the three-channel connector 6, so that the air extracted by the vacuum pump 3 can be guided to a suitable place through the three-channel connector 6 and discharged out of the device, avoiding interference with operations such as oil sample collection in the device.

[0044] The function of the oil drain pump 4 is to drain unnecessary liquid (such as waste oil in the waste oil removal stage) from the device. Its inlet pipeline is connected to the three-channel connector 6, which means that the liquid to be drained can be guided to the inlet pipeline of the oil drain pump 4 through other pipelines connected to the three-channel connector 6, and then the liquid is drained from the device through the operation of the oil drain pump 4, ensuring that the device is in a suitable state for subsequent operations such as oil sample collection.

[0045] Specifically, in this embodiment, when the oil sample collection operation of the transformer is performed, first, the waste oil entering the oil sample collection device from the oil storage container in the initial stage of the operation is removed. It can be understood that when the oil sample collection operation is started, the oil storage container is connected to the inlet pipeline of the oil pump 2 of the oil sample collection device. Since there may be some residual or non-representative oil in the oil storage container, these oils are called waste oil. These waste oils may be left over due to long-term storage, equipment aging or previous operations. In this embodiment, step S101 removes the waste oil to ensure that the oil samples collected later are representative and accurate, and to avoid the waste oil from affecting the composition and quality of the target oil sample. For example, after multiple uses, the oil storage container may have sediment, impurities or deteriorated oil layers at the bottom. When the oil sample collection operation is started, these parts may first enter the oil sample collection device. Discharging the waste oil from the oil sample collection device can avoid mixing the waste oil with the target oil sample, ensure that the collected oil sample can truly reflect the original characteristics of the oil product, and ensure the accuracy of the subsequent analysis and detection results based on the oil sample.

[0046] Step S201: Clean the oil collecting pipe 1.

[0047] In this embodiment, the oil collecting pipe 1 is the main component through which the oil sample flows and is stored. Before collecting the oil sample, it needs to be cleaned. This is because the oil collecting pipe 1 may have some oil or impurities remaining in the previous use process, and these residues will affect the purity and accuracy of the newly collected oil sample. The cleaning operation can be carried out in a flushing manner, using a clean solvent or other cleaning medium, and introducing the cleaning liquid into the oil collecting pipe 1 through a circulation pipeline to thoroughly clean the inside. The cleaning liquid can take away impurities attached to the inner wall of the oil collecting pipe 1, residual oil film or other substances that may affect the quality of the oil sample. For different oil sample collection tasks, the strictness of cleaning and the cleaning liquid used may be different. For example, when collecting oil samples required for high-precision analysis, the target oil sample can be used for multiple cleanings to prevent the impurities that may remain in the oil collecting pipe 1, other substances left over from the previous collection, etc. from contaminating the newly collected oil sample, so that the composition of the collected oil sample is more consistent with the actual oil product.

[0048] Step S301: performing a vacuum operation on the oil collecting pipe 1.

[0049] In this embodiment, the vacuum operation is mainly to exhaust the air in the oil collecting pipe 1, to prevent the air from mixing into the oil sample and changing its physical and chemical properties, to make the state of the oil sample more stable and closer to the actual storage state during the collection process, and to further improve the accuracy of the collection. Here, the vacuum pump 3 can be used to extract the air in the oil collecting pipe 1, so that the oil collecting pipe 1 reaches a certain vacuum degree, forming a negative pressure environment, which is conducive to the smooth injection of the subsequent oil sample.

[0050] Step S401: inject the oil sample into the oil collecting pipe 1.

[0051] In this embodiment, after the above-mentioned waste oil removal, cleaning of the oil collecting pipe 1 and vacuuming operations are completed, the oil sample injection operation can be performed. Here, the oil sample in the oil storage container can be sucked into the oil collecting pipe 1 through the corresponding pipeline using the oil pump 2 or other power device. Since the previous vacuuming operation forms a negative pressure environment in the oil collecting pipe 1, the oil sample can be more easily sucked into the oil collecting pipe 1 under the action of the pressure difference.

[0052] By applying the technical solution of this embodiment, from removing waste oil, cleaning the oil collecting pipe 1, vacuuming to injecting oil samples, the entire oil sample collection process is standardized and reliable, reducing the randomness and uncertainty of human operation. Different operators can collect oil samples that meet the requirements relatively stably according to this method, thereby improving the purity and quality of the oil samples. Specifically, by removing the waste oil that enters the oil sample collection device from the oil storage container at the initial stage of the operation, it is possible to avoid mixing the waste oil with the target oil sample, ensuring that the collected oil sample can truly reflect the original characteristics of the oil product, and ensuring the accuracy of the subsequent various analysis and detection results based on the oil sample; by cleaning the oil collecting pipe 1 before collection, it is possible to remove impurities that may remain in the oil collecting pipe 1, other substances left over from previous collections, etc., to prevent them from contaminating the newly collected oil samples, so that the collected oil sample composition is more consistent with the actual situation of the oil product; by vacuuming the oil collecting pipe 1, it is possible to remove the air in the oil collecting pipe 1, to avoid air mixing into the oil sample to change its physical and chemical properties, so that the state of the oil sample during the collection process is more stable and closer to the actual storage state, further improving the accuracy of collection.

[0053] In the above embodiment, step S101 includes:

[0054] Step S1011: Start the oil pump 2 and the oil discharge pump 4, and turn off the vacuum pump 3.

[0055] In the initial stage of the oil sample collection operation, the oil extracted from the oil storage container such as the transformer by the oil sample collection device is waste oil. After starting the oil pump 2, the oil pump 2 will generate suction, and the waste oil will be extracted from the oil storage container such as the transformer through the inlet pipeline connected to the oil storage container such as the transformer. When the oil pump 2 is working, the waste oil generates pressure in its outlet pipeline, pushing the waste oil to flow to the four-channel connector 5 and other connected pipelines. At the same time, the oil discharge pump 4 is started, and the oil discharge pump 4 also generates suction, and the waste oil located at the four-channel connector 5 is extracted through the three-channel connector 6 connected to the four-channel connector 5, thereby effectively preventing the waste oil from entering the oil collecting pipe 1. When the oil discharge pump 4 is working, the waste oil generates pressure in its outlet pipeline, and then is smoothly discharged from the oil sample collection device. As for turning off the vacuum pump 3 in this step, the reason is that the function of the vacuum pump 3 is not needed at the current operation stage. The vacuum pump 3 is mainly used to evacuate the oil collecting pipe 1 and other components, in order to create a low-pressure environment for oil sample injection, or for other operations that require air removal. However, in step S101, the main task is to remove the waste oil. If the vacuum pump 3 is turned on at this time, it may not only interfere with the waste oil removal process, but also cause unnecessary energy consumption.

[0056] In the above embodiment, step S201 includes:

[0057] Step S2011: Start the oil pump 2, and turn off the vacuum pump 3 and the oil discharge pump 4.

[0058] Here, after the oil pump 2 is started, the oil pump 2 will generate suction, and the oil sample will be extracted from the oil storage container such as the transformer through the inlet pipeline connected to the oil storage container such as the transformer. When the oil pump 2 is working, the oil sample generates pressure in its outlet pipeline, pushing the oil sample to flow to the four-channel connector 5 and other connected pipelines. At the same time, the vacuum pump 3 and the oil drain pump 4 are turned off. Since the vacuum pump 3 and the oil drain pump 4 are in the off state, the vacuum pump 3 and the oil drain pump 4 will not affect the flow of the oil sample. In the pipeline system of the entire oil sample collection device, the vacuum pump 3 and the oil drain pump 4 are equivalent to a circuit breaker at this time. Therefore, the four-channel connector 5 is only connected to the circulation pipeline of the oil collecting pipe 1. Through this connection state, the oil sample can smoothly enter the oil collecting pipe 1 through the circulation pipeline, thereby realizing the injection of the oil sample into the oil collecting pipe 1 to achieve the purpose of cleaning the oil collecting pipe 1.

[0059] Step S2012: turn off the oil pump 2 and the vacuum pump 3, and start the oil discharge pump 4.

[0060] Here, the oil pump 2 and the vacuum pump 3 are turned off and the oil drain pump 4 is started to drain the oil remaining in the oil collecting pipe 1 or related pipelines after the oil collecting pipe 1 is cleaned. By starting the oil drain pump 4, the oil drain pump 4 will generate suction in its inlet pipeline, thereby sucking the oil remaining in the oil collecting pipe 1 or related pipelines into the oil drain pump 4, and then discharging the device through the outlet pipeline of the oil drain pump 4.

[0061] In addition, step S201 may also have the following implementation modes:

[0062] Step S2011: start the oil pump 2, and turn off the vacuum pump 3 and the oil discharge pump 4;

[0063] Step S2012: turn off the oil pump 2, and start the vacuum pump 3 and the oil discharge pump 4.

[0064] Here, after the cleaning of the oil collecting pipe 1 is completed, the vacuum pump 3 and the oil drain pipe are started at the same time when the residual oil in the oil collecting pipe 1 or related pipelines is discharged. The oil drain pipe generates suction through its inlet pipeline, sucks the residual oil in the oil collecting pipe 1 or related pipelines into the device, and discharges it through its outlet pipeline, thereby ensuring the cleanliness of the device. The start of the vacuum pump 3 has multiple functions. On the one hand, it can further assist the oil drain pipe in discharging the residual oil, because in the vacuum state, the residual oil will flow more easily under the action of the pressure difference, speeding up the discharge speed; on the other hand, while discharging the residual oil, the vacuum pump 3 can perform secondary cleaning on the oil collecting pipe 1 and the connected pipelines, and extract the tiny droplets or bubbles that remain on the pipe wall or are difficult to discharge, thereby improving the cleaning effect of the entire system.

[0065] In the above embodiment, step S301 includes:

[0066] Step S3011: turn off the oil pump 2, and start the vacuum pump 3 and the oil discharge pump 4.

[0067] Here, after the cleaning operation of the oil collecting pipe 1 is completed, the oil pump 2 is turned off, which means that the oil extraction work previously performed by the oil pump 2 is suspended. At this time, the vacuum pump 3 is started. After the vacuum pump 3 is started, a strong suction force will be generated, and the air in the oil collecting pipe 1 will be extracted through the pipeline connected to the oil collecting pipe 1 by the four-channel connector 5. The extracted air flows along the pipeline to the three-channel connector 6, and then enters the oil drain pump 4 through the three-channel connector 6. At the same time, the oil drain pump 4 is started. After the oil drain pump 4 is started, it is equivalent to an open circuit state in the entire system. On the one hand, the oil drain pump 4 can receive the air extracted from the vacuum pump 3 and transmitted through the three-channel connector 6, and discharge it out of the device, thereby realizing the vacuuming process of the oil collecting pipe 1; on the other hand, the oil drain pump 4 can also generate suction during operation, which helps to suck in the trace liquid, impurities or gas that may remain in the oil collecting pipe 1 and related pipelines, ensure the cleanliness of the inside of the device, and create a good environment for the subsequent oil sample collection work.

[0068] In the above embodiment, step S401 includes:

[0069] Step S4011: Start the oil pump 2, and turn off the vacuum pump 3 and the oil discharge pump 4.

[0070] Here, after the oil pump 2 is started, the oil pump 2 will generate suction, and the oil sample will be extracted from the oil storage container such as the transformer through the inlet pipeline connected to the oil storage container such as the transformer. When the oil pump 2 is working, the oil sample generates pressure in its outlet pipeline, pushing the oil sample to flow to the four-channel connector 5 and other connected pipelines. At the same time, the vacuum pump 3 and the oil drain pump 4 are turned off. Since the vacuum pump 3 and the oil drain pump 4 are in the off state, the vacuum pump 3 and the oil drain pump 4 will not affect the flow of the oil sample. In the pipeline system of the entire oil sample collection device, the vacuum pump 3 and the oil drain pump 4 are equivalent to a circuit breaker at this time. Therefore, the four-channel connector 5 is only connected to the circulation pipeline of the oil collecting pipe 1. Through this connection state, the oil sample can smoothly enter the oil collecting pipe 1 through the circulation pipeline, thereby realizing the injection of the oil sample into the oil collecting pipe 1 to achieve the purpose of collecting the oil sample.

[0071] In some possible implementations disclosed in this application, see Figure 3 As shown, the oil sample collection device also includes an ultrasonic pipeline cleaner 7. Before the oil sample collection operation starts and / or after the oil sample collection operation is completed, the method also includes: starting the ultrasonic pipeline cleaner 7, the oil pump 2, the vacuum pump 3 and the oil discharge pump 4.

[0072] In this embodiment, before the oil sample collection operation begins, the ultrasonic pipeline cleaner 7 is started to deeply clean the pipeline system of the oil sample collection device, including the oil collecting pipe 1, the four-channel connector 5, the three-channel connector 6 and various pipelines and other components, which helps to remove stubborn dirt, residual oil stains or other impurities that may be attached to the pipe wall, and these impurities may be difficult to remove by conventional cleaning methods alone. Cleaning after the oil sample collection operation is completed can ensure that no oil sample collected this time will remain in the pipeline, preventing contamination of the next collection operation.

[0073] The oil sample collection device further includes a mounting plate, on which the ultrasonic pipeline cleaner 7, the oil collecting pipe 1, the oil pump 2, the vacuum pump 3 and the oil discharge pump 4 are all arranged. When the ultrasonic pipeline cleaner 7 is started, the ultrasonic pipeline cleaner 7 can generate high-frequency vibration, which is transmitted to the oil collecting pipe 1, the oil pump 2, the vacuum pump 3 and the oil discharge pump 4, and the connecting pipeline through the mounting plate.

[0074] In some possible implementations disclosed in this application, see Figure 4 As shown, the oil sample collection device further includes a flow sensor 8 and a pressure sensor 9 , and both the flow sensor 8 and the pressure sensor 9 are arranged on the pipeline connecting the oil pump 2 and the four-channel connector 5 .

[0075] In this embodiment, by providing a flow sensor 8 and a pressure sensor 9, the flow rate and pressure during the oil sample collection operation can be accurately controlled, thereby ensuring the quality of the collected oil sample and the stability of the collection process; at the same time, by providing a flow sensor 8 and a pressure sensor 9, it is also possible to detect whether there is a sealing leakage problem in the device, thereby ensuring the safe operation of the device and the safety of the surrounding environment.

[0076] Among them, the flow sensor 8 is used to measure the flow rate of the oil sample in the pipeline between the oil pump 2 and the four-channel connector 5 in real time. During the oil sample collection operation, different application scenarios have different requirements for the oil sample collection flow rate. For example, when performing high-precision analysis of trace oil samples in the laboratory, it is necessary to accurately control the flow rate to collect an appropriate amount of oil samples. The flow sensor 8 transmits the collected flow data to the controller 14. When the controller 14 finds that the flow rate deviates from the preset value, for example, too large a flow rate may cause the oil sample collection speed to be too fast, causing air to be mixed into the oil sample or the collection amount to exceed the demand; too small a flow rate will reduce the collection efficiency. At this time, the controller 14 will automatically adjust the working parameters of the oil pump 2, such as the motor speed, etc., according to the data fed back by the flow sensor 8, so that the flow rate returns to the preset value. In this way, the precise control of the flow rate during the oil sample collection operation is guaranteed, and a stable oil sample flow condition is provided for subsequent analysis and detection.

[0077] Among them, the pressure sensor 9 is used to measure the pressure in the device pipeline. During the oil sample collection operation, appropriate pressure is very important to ensure the normal flow of the oil sample and avoid changes in the physical properties of the oil sample. For example, when the pressure is too high, some volatile components in the oil sample may evaporate, or cause problems with the sealing of the pipeline connection; if the pressure is too low, the oil sample may not be able to pass through the pipeline smoothly into the oil collecting pipe 1. In practical applications, the pressure sensor 9 can feed back pressure data to the controller 14. Once the pressure deviates from the preset value, the controller 14 will adjust the pressure in the pipeline by adjusting the output power of the oil pump 2. For example, if the pressure is too high, the control system will reduce the speed of the oil pump 2 to reduce the pressure; if the pressure is too low, the power of the oil pump 2 will be appropriately increased, so that the pressure returns to the preset range to ensure the stability of the pressure during the oil sample collection operation.

[0078] In addition, when a leak occurs in the pipeline or seal of the oil sample collection device, the flow and pressure in the pipeline will change significantly. For example, a leak will cause a decrease in flow because part of the oil sample is lost from the leak; at the same time, the pressure will also drop because the sealing of the system is damaged and the normal pressure cannot be maintained. The flow sensor 8 and the pressure sensor 9 can keenly capture these changes. In actual applications, once the changes in flow and pressure exceed the normal range, the controller 14 will determine that a seal leak has occurred. At this time, the controller 14 will immediately stop the operation of the oil pump 2, thereby stopping the oil sample collection operation to prevent more oil samples from leaking. At the same time, the controller 14 also issues an alarm through the touch screen, and the alarm information may include the possible location of the leak (inferred by analyzing the location of the flow and pressure changes), the severity of the leak (judged based on the magnitude of the flow and pressure changes), and other content. It is understandable that after seeing the alarm, the operator can quickly inspect and repair the device, such as checking whether the pipeline connection is loose or the seal is damaged. This automatic sampling stop and alarm mechanism effectively protects the safety of the device, oil samples and the surrounding environment, and avoids various risks that may be caused by leakage, such as oil sample waste, environmental pollution, fire hazards (for some flammable oil samples), etc.

[0079] In some possible implementations disclosed in this application, see Figure 5 As shown, the oil sample collection device further includes a filter 10 , which is disposed at the outlet of the outlet pipeline of the oil drain pump 4 and is detachably connected to the outlet pipeline of the oil drain pump 4 .

[0080] In this embodiment, the filter 10 is provided to filter the substances discharged from the oil discharge pump 4, thereby preventing the oil or other discharges containing impurities and pollutants from being directly discharged into the environment.

[0081] When the oil discharge pump 4 discharges liquid containing various impurities (such as waste oil, liquid containing dirt after cleaning, etc.) from the outlet pipeline, these liquids will first pass through the filter 10. The filter 10 includes a filter screen or a filter element with a certain pore size, which can intercept impurities in the liquid that are larger than the pore size. For example, when the oil discharge pump 4 discharges the cleaning liquid after cleaning the oil collecting pipe 1, the cleaning liquid may contain solid impurities, such as flaking oil stains, rust in the pipe, mud and sand particles, etc. These impurities will be blocked in the filter 10 when passing through the filter 10, and the relatively clean cleaning liquid can be discharged through the filter 10.

[0082] Specifically, the filter 10 is detachably connected to the outlet pipeline of the oil discharge pump 4. When the filter 10 needs to be maintained, the operator can easily remove it from the outlet pipeline. For example, when the filtering effect of the filter 10 decreases, which is manifested as a decrease in flow rate (possibly due to impurities blocking the filter screen) or the cleanliness of the discharge after passing through the filter 10 decreases, the operator can quickly remove the filter 10 without affecting other components.

[0083] In some possible implementations disclosed in this application, see Figure 1 As shown, the oil sample collection device also includes a shell 11, and the oil collecting pipe 1 is detachably arranged in the shell 11. An observation chamber cover 12 is rotatably connected to the shell 11 at a position relative to the oil collecting pipe 1, and the observation chamber cover 12 is made of transparent material.

[0084] In this embodiment, the housing 11 can provide physical protection for the internal components of the oil sample collection device, preventing external factors from damaging the oil collecting pipe 1 and other key components (such as the oil pump 2, the vacuum pump 3, etc.). The transparent observation chamber cover 12 is provided so that the operator can directly observe the state of the oil collecting pipe 1. During the oil sample collection operation, the operator can check the liquid level, color, bubbles or impurities of the oil sample in the oil collecting pipe 1 through the observation chamber cover 12, which helps to promptly discover abnormal conditions during the oil sample collection operation, such as oil sample contamination, oil collecting pipe 1 leakage, etc.

[0085] The housing 11 may be made of corrosion-resistant aluminum alloy material to ensure that the oil sample collection device can work normally in harsh environments (high temperature, high humidity, vibration).

[0086] The observation chamber cover 12 may be made of transparent glass or plastic, so that the operator can accurately judge through the observation chamber cover 12 whether a sufficient amount of oil sample has been collected.

[0087] In some possible implementations disclosed in this application, see Figure 1 and Figure 2As shown, the oil sample collection device also includes a touch screen 13 and a controller 14. The touch screen 13 is arranged on the housing 11, and the touch screen 13 is used for human-computer interaction. The controller 14 is arranged in the housing 11, and the controller 14 is electrically connected to the touch screen 13, the oil pump 2, the vacuum pump 3 and the oil discharge pump 4 respectively. The controller 14 is used to respond to instructions issued by the touch screen 13 to switch the working states of the oil pump 2, the vacuum pump 3 and the oil discharge pump 4.

[0088] In this embodiment, by setting a touch screen 13 on the housing 11 for human-computer interaction, the operator can directly operate on the touch screen 13 without using complex physical buttons or switches, making the operation more convenient; at the same time, the operator can intuitively see various operation options and equipment status information on the touch screen 13, and easily control the oil sample collection device according to needs, greatly simplifying the operation process. By setting the controller 14 to be electrically connected to the oil pump 2, the vacuum pump 3 and the oil discharge pump 4, the working status of these devices can be accurately controlled. The operator can send instructions to the controller 14 through the touch screen 13 according to the different stages and specific needs of oil sample collection. The controller 14 accurately switches the working states of the oil pump 2, the vacuum pump 3 and the oil discharge pump 4 according to these instructions to achieve precise operation control, such as adjusting the suction speed of the oil pump 2, the vacuum degree of the vacuum pump 3, the discharge speed of the oil discharge pump 4, etc.; at the same time, the controller 14 can feed back the real-time status information of the equipment to the touch screen 13, and the operator can view the working states of the oil pump 2, the vacuum pump 3 and the oil discharge pump 4 (such as whether they are running, the running speed, the working pressure, etc.), as well as the operation status of the entire oil sample collection device on the touch screen 13, which is convenient for real-time monitoring and adjustment to ensure the accuracy and stability of the oil sample collection process.

[0089] Among them, a clear operation menu can be displayed on the touch screen 13, including buttons for starting / stopping the oil pump 2, the vacuum pump 3 and the oil pump 4, as well as options for setting the working parameters of these devices. The operator can easily start or stop the operation of the equipment by touching the corresponding button. For example, by clicking the "Start Oil Pump 2" button, the controller 14 will receive the corresponding instruction, and then control the oil pump 2 to start working, extracting the oil sample from the oil storage container into the oil sample collection device. Specifically, for switching between different operation steps, such as switching from the oil collection pipe 1 cleaning operation to the oil sample injection operation, the operator can easily select the corresponding operation option on the touch screen 13 without manually adjusting multiple physical switches or valves, which makes the operation easier. The touch screen 13 can also use a graphical interface to intuitively display the various components of the oil sample collection device, which is convenient for the operator to quickly locate and operate the corresponding components.

[0090] Among them, the controller 14 can feed back the real-time status information of the oil pump 2, the vacuum pump 3 and the oil discharge pump 4 to the touch screen 13. For example, the actual pumping speed of the oil pump 2, the current vacuum degree of the vacuum pump 3 and the discharge speed of the oil discharge pump 4 are displayed, and the operator can judge whether the equipment is working normally based on this information. If the actual pumping speed of the oil pump 2 does not match the set pumping speed, the operator can find out and adjust it in time to avoid oil sample collection problems caused by equipment failure or parameter deviation. Specifically, when the equipment has an abnormal situation, such as the oil pump 2 is blocked, the vacuum pump 3 pressure is abnormal, etc., the controller 14 can send the abnormal information to the touch screen 13, display the corresponding fault code or prompt information, help the operator quickly locate the problem, and perform maintenance and processing in time. Furthermore, the operator can set the automated process of oil sample collection on the touch screen 13, such as setting the process sequence of first cleaning the oil collecting pipe 1, then performing the vacuum operation, and then injecting the oil sample. The controller 14 will automatically control the working order and status of the oil pump 2, vacuum pump 3 and oil discharge pump 4 according to the preset process, and complete each operation step in sequence, without the operator having to manually operate each device. For example, after the set cleaning time is over, the controller 14 will automatically turn off the oil pump 2 and vacuum pump 3, turn on the oil discharge pump 4 to discharge the cleaning liquid, and then proceed to the next operation, reducing the tediousness of manual operation and potential operating errors.

[0091] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0092] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. An oil sample collection method, characterized in that: The invention is applied to an oil sample collection device, the oil sample collection device comprising an oil collecting pipe (1), an oil pump (2), a vacuum pump (3), an oil discharge pump (4), a four-channel connector (5) and a three-channel connector (6), the four-channel connector (5) being respectively connected to the outlet pipeline of the oil pump (2), the circulation pipeline of the oil collecting pipe (1), the inlet pipeline of the vacuum pump (3) and the three-channel connector (6), and the three-channel connector (6) being also connected to the outlet pipeline of the vacuum pump (3) and the inlet pipeline of the oil discharge pump (4); the method comprising: The waste oil entering the oil sample collection device from the oil storage container at the initial stage of the cleaning operation; Cleaning the oil collecting pipe (1); Performing a vacuum operation on the oil collecting pipe (1); Inject the oil sample into the oil collecting pipe (1).

2. The oil sample collection method according to claim 1, characterized in that: The waste oil entering the oil sample collection device from the oil storage container in the initial stage of the cleaning operation includes: The oil extraction pump (2) and the oil discharge pump (4) are started, and the vacuum pump (3) is turned off.

3. The oil sample collection method according to claim 1, characterized in that: The cleaning of the oil collecting pipe (1) comprises: Starting the oil pump (2), and shutting down the vacuum pump (3) and the oil discharge pump (4); The oil pump (2) and the vacuum pump (3) are turned off, and the oil discharge pump (4) is started; or, the oil pump (2) is turned off, and the vacuum pump (3) and the oil discharge pump (4) are started.

4. The oil sample collection method according to claim 1, characterized in that: The vacuuming operation on the oil collecting pipe (1) comprises: The oil extraction pump (2) is turned off, and the vacuum pump (3) and the oil discharge pump (4) are started.

5. The oil sample collection method according to claim 1, characterized in that: The step of injecting the oil sample into the oil collecting pipe (1) comprises: The oil extraction pump (2) is started, and the vacuum pump (3) and the oil discharge pump (4) are shut down.

6. The oil sample collection method according to claim 1, characterized in that: The oil sample collection device further comprises an ultrasonic pipeline cleaner (7). Before the oil sample collection operation begins and / or after the oil sample collection operation is completed, the method further comprises: The ultrasonic pipeline cleaner (7), the oil extraction pump (2), the vacuum pump (3) and the oil discharge pump (4) are started.

7. The oil sample collection method according to claim 1, characterized in that: The oil sample collection device further comprises a flow sensor (8) and a pressure sensor (9), wherein the flow sensor (8) and the pressure sensor (9) are both arranged on a pipeline connecting the oil pump (2) and the four-channel connector (5).

8. The oil sample collection method according to claim 1, characterized in that: The oil sample collection device further comprises a filter (10), which is arranged at the outlet of the outlet pipeline of the oil discharge pump (4) and is detachably connected to the outlet pipeline of the oil discharge pump (4).

9. The oil sample collection method according to claim 1, characterized in that: The oil sample collection device further comprises a housing (11), the oil collecting pipe (1) being detachably arranged in the housing (11), and an observation chamber cover (12) being rotatably connected to the housing (11) at a position relative to the oil collecting pipe (1), the observation chamber cover (12) being made of a transparent material.

10. The oil sample collection method according to claim 9, characterized in that: The oil sample collection device further comprises a touch screen (13) and a controller (14); the touch screen (13) is arranged on the housing (11); the touch screen (13) is used for human-computer interaction; the controller (14) is arranged in the housing (11); the controller (14) is electrically connected to the touch screen (13), the oil pump (2), the vacuum pump (3) and the oil discharge pump (4) respectively; the controller (14) is used to respond to instructions issued by the touch screen (13) and switch the working states of the oil pump (2), the vacuum pump (3) and the oil discharge pump (4).

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