Servo sampling system and sampling method

Abstract

The present invention discloses a servo sampling system and a sampling method. The system includes a sampling control mechanism, a servo sampling mechanism and a nitrogen making mechanism, wherein: the nitrogen making mechanism is connected to the sampling control mechanism and performs a nitrogen making process according to a sampling instruction; the servo sampling mechanism is arranged at the installation port of the storage tank and is connected to the sampling control mechanism through a delivery hose, and the servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to a sampling position according to the sampling instruction; the sampling control mechanism controls the operating conditions of the nitrogen making mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to perform a corresponding sampling process. Since the servo sampling system of the present invention can automatically sample the sampling position, the sampling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum sampling, in particular to a quantitative sampling device, namely a sampling method. Background Art

[0002] At present, when sampling oil, it is impossible to complete quantitative sampling at a specific position, and the sampling efficiency is low. Therefore, how to improve the sampling efficiency has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0003] The invention provides a servo sampling system and a sampling method to improve the sampling efficiency.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a servo sampling system, comprising a sampling control mechanism, a servo sampling mechanism and a nitrogen generation mechanism, wherein:

[0006] The nitrogen production mechanism is connected to the sampling control mechanism and executes the nitrogen production process according to the sampling instruction;

[0007] The servo sampling mechanism is arranged at the installation port of the storage tank and is connected with the sampling control mechanism through a delivery hose. The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction;

[0008] The sampling control mechanism controls the operation status of the nitrogen generation mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to execute the corresponding sampling process.

[0009] In some possible embodiments of the present invention, the sampling process includes a barrel oil cavity entry process, a barrel oil entry process, a waste discharge process, and a sample discharge process;

[0010] During the barrel oil entering the chamber process, the oil in the sampling barrel enters the oil collecting chamber through the pipeline;

[0011] During the barrel oil feeding process, the oil at the sampling position in the storage tank enters the sampling barrel;

[0012] In the waste discharge process, the oil in the oil collecting chamber is discharged into the storage tank through the pipeline;

[0013] In the sampling process, the oil in the oil collecting chamber is discharged into the sampling cup.

[0014] In some possible embodiments of the present invention, the sampling control mechanism includes a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, an oil collecting chamber, a first interface, a second interface, a third interface, a fourth interface and a first controller, wherein:

[0015] The first interface is connected to the nitrogen production mechanism through a pipeline; the second interface and the fourth interface are connected to the servo sampling mechanism through a pipeline; the third interface is connected to the storage tank through a pipeline;

[0016] The sample outlet of the oil collecting chamber is connected to the first valve through a pipeline;

[0017] The first inlet of the oil collecting chamber is communicated with the first interface through the third valve, and is communicated with the third interface through the seventh valve;

[0018] The second inlet of the oil collecting chamber is connected to the second interface through a pipeline via a fifth valve;

[0019] The waste outlet of the oil collecting chamber is connected to the third interface through the second valve;

[0020] The first interface is connected to the fourth interface through the fourth valve, and the fourth valve is connected to the third interface through the sixth valve;

[0021] The first controller controls the conduction status of the corresponding valve according to the sampling instruction to execute the corresponding sampling process.

[0022] In some possible embodiments of the present invention, during the barrel oil entering the cavity process, the first controller controls the fourth valve, the fifth valve and the seventh valve to be opened, and the first valve, the second valve, the third valve and the sixth valve to be closed;

[0023] During the barrel oil filling process: the first controller controls the sixth valve to open, and the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the seventh valve to close;

[0024] During the waste discharge process: the first controller controls the second valve and the third valve to be opened, and the first valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve to be closed;

[0025] During the sample arrangement process: the first controller controls the first valve and the seventh valve to be opened, and the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve to be closed.

[0026] In some possible embodiments of the present invention, the servo sampling mechanism includes a base, a servo drive device, a sampling bucket and a second controller, wherein:

[0027] The base is used to be installed on the installation port of the storage tank;

[0028] The sampling barrel is fixed on the rotating strand of the servo drive device through a traction rope and can be wound around the circumference of the rotating strand. The first conveying hose of the sampling barrel is connected to the second interface, and the second conveying hose of the sampling barrel is connected to the fourth interface.

[0029] The fixed end of the servo drive device is arranged on the base;

[0030] The second controller controls the servo drive device to drive the sampling barrel to move to the sampling position according to the sampling instruction.

[0031] In some possible embodiments of the present invention, the nitrogen generating mechanism includes an air compressor, a nitrogen generator, a gas storage tank, a first pressure sensor and a third controller, wherein:

[0032] The outlet of the air compressor is connected to the inlet of the nitrogen generator, the outlet of the nitrogen generator is connected to the inlet of the gas storage tank, and the outlet of the gas storage tank is connected to the first interface; the first pressure sensor is used to collect the pressure value of the gas storage tank;

[0033] The third controller controls the operating conditions of the air compressor, the nitrogen generator and the gas storage tank. When executing the nitrogen making process, when the pressure value is less than the first pressure threshold, the third controller controls the nitrogen generator and the air compressor to operate; when the pressure value is greater than the second pressure threshold, the third controller controls the nitrogen generator and the air compressor to stop operating.

[0034] In a second aspect, the present invention provides a servo sampling method, using any of the above servo sampling systems, the servo sampling method comprising:

[0035] Get sampling instructions;

[0036] The nitrogen production mechanism executes the nitrogen production process according to the sampling instruction;

[0037] The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction;

[0038] The sampling control mechanism controls the operation status of the nitrogen generation mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to execute the corresponding sampling process.

[0039] In some possible embodiments of the present invention, the sampling instructions include single-point sampling instructions, multi-point sampling instructions and mixed sampling instructions.

[0040] In some possible embodiments of the present invention, when a single-point sampling instruction is given, the servo sampling method includes:

[0041] The nitrogen making mechanism performs the nitrogen making process;

[0042] The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the single-point sampling instruction;

[0043] The sampling control mechanism executes the corresponding sampling process.

[0044] In some possible embodiments of the present invention, when a multi-point sampling instruction is given, the servo sampling method includes:

[0045] The nitrogen making mechanism performs the nitrogen making process;

[0046] The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position of the corresponding point according to the multi-point sampling instruction, and the sampling control mechanism executes the corresponding sampling process;

[0047] Until all points are sampled.

[0048] In some possible embodiments of the present invention, the servo sampling method further includes:

[0049] Get the oil level in the tank;

[0050] Determine the sampling positions of the corresponding points according to the liquid level and the number of sampling points.

[0051] In some possible embodiments of the present invention, the servo sampling method further includes:

[0052] Get the oil level in the tank;

[0053] The number and location of the sampling points are calculated based on the pre-stored correspondence between the liquid level and the sampling points.

[0054] In some possible embodiments of the present invention, the sampling process includes a barrel oil cavity entry process, a barrel oil entry process, a waste discharge process, and a sample discharge process;

[0055] During the barrel oil entering the chamber process, the oil in the sampling barrel enters the oil collecting chamber through the pipeline;

[0056] During the barrel oil feeding process, the oil at the sampling position in the storage tank enters the sampling barrel;

[0057] During the waste discharge process, the oil in the oil collecting chamber is discharged into the storage tank through the pipeline;

[0058] During the sampling process, the oil in the oil collecting chamber is discharged into the sampling cup.

[0059] In some possible embodiments of the present invention, the servo sampling method further includes: storing a corresponding relationship between the sampling points and the sampling positions.

[0060] It can be seen from the above technical scheme that, when sampling is required, the servo sampling system of the present invention obtains a sampling instruction; the nitrogen making mechanism executes the nitrogen making process according to the sampling instruction; the servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction; the sampling control mechanism controls the operating conditions of the nitrogen making mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to execute the corresponding sampling process. Since the servo sampling system of the present invention can automatically sample the sampling position, the sampling efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present invention can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0062] Figure 1 is a schematic diagram of the structure of a servo sampling system provided by an embodiment of the present invention;

[0063] Figure 2 It is a schematic diagram of a servo sampling system provided by an embodiment of the present invention during the process of barrel oil entering the cavity;

[0064] Figure 3 It is a schematic diagram of a servo sampling system provided by an embodiment of the present invention being turned on during a barrel oil filling process;

[0065] Figure 4 It is a schematic diagram of a servo sampling system provided by an embodiment of the present invention being turned on during a waste discharge process;

[0066] Figure 5 It is a schematic diagram of a servo sampling system provided by an embodiment of the present invention being turned on during a sample arrangement process;

[0067] Figure 6 A schematic diagram of the structure of a servo sampling mechanism provided by an embodiment of the present invention;

[0068] Figure 7 is a schematic diagram of the three-dimensional structure of a servo sampling device provided by an embodiment of the present invention;

[0069] Figure 8 is a right-side structural schematic diagram of a servo sampling device provided by an embodiment of the present invention;

[0070] Fig. 9 yes Figure 8 Schematic cross-sectional view of section AA;

[0071] Fig.10 It is a structural schematic diagram of a nitrogen production mechanism provided by an embodiment of the present invention;

[0072] Fig.11 is a flow chart of a servo sampling method provided by an embodiment of the present invention;

[0073] Fig.12 is a flow chart of a second servo sampling method provided by an embodiment of the present invention;

[0074] Fig.13 4 is a flow chart of a third servo sampling method provided by an embodiment of the present invention.

[0075] Among them, 100 is a sampling control mechanism, 200 is a servo sampling mechanism, and 300 is a nitrogen generation mechanism;

[0076] 101 is the first valve, 102 is the second valve, 103 is the third valve, 104 is the fourth valve, 105 is the fifth valve, 106 is the sixth valve, 107 is the seventh valve, 108 is the oil collecting chamber, 100a is the first interface, 100b is the second interface, 100c is the third interface, and 100d is the fourth interface;

[0077] 201 is a base, 203 is a sampling barrel, 202 is a servo drive device, and 204 is a second controller; 200a is a first conveying hose, 200b is a second conveying hose, 2021 is a shell, 2022 is a stepping motor, 2023 is a reducer, 2024 is a magnetic coupling member, 2025 is a stock shaft, 2026 is a stock, 2027 is a first bearing, 2028 is a bearing seat, and 2029 is a second bearing; 2031 is a traction rope; 20231 is an induction member, 20232 is an induction rope, 20241 is a first magnetic coupling member, 20242 is a second magnetic coupling member, 20241a is a first magnet support, 20241b is an outer shell, 20241c is a first magnet, 20242a is a second magnet support, and 20242b is a second magnet;

[0078] 301 is an air compressor, 302 is a nitrogen generator, and 303 is a gas storage tank. DETAILED DESCRIPTION

[0079] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0080] The invention provides a servo sampling system and a sampling method to improve the sampling efficiency.

[0081] See also Figure 1The servo sampling system provided by the present invention comprises a sampling control mechanism 100, a servo sampling mechanism 200 and a nitrogen generator 302, wherein: the nitrogen generator 302 is connected to the sampling control mechanism 100, and performs a nitrogen making process according to a sampling instruction; the servo sampling mechanism 200 is arranged at the installation port of the storage tank, and is connected to the sampling control mechanism 100 through a delivery hose, and the servo sampling mechanism 200 drives the sampling barrel 203 of the servo sampling mechanism 200 to move to a sampling position according to the sampling instruction; the sampling control mechanism 100 controls the operating conditions of the nitrogen generator 302, the sampling control mechanism 100 and the servo sampling mechanism 200 according to the sampling instruction, so as to perform a corresponding sampling process.

[0082] When sampling is required, the servo sampling system of the present invention obtains a sampling instruction; the nitrogen generator 302 structure 300 performs the nitrogen making process according to the sampling instruction; the servo sampling mechanism 200 drives the sampling barrel 203 of the servo sampling mechanism 200 to move to the sampling position according to the sampling instruction; the sampling control mechanism 100 controls the operation status of the nitrogen generator 302 structure 300, the sampling control mechanism 100 and the servo sampling mechanism 200 according to the sampling instruction to perform the corresponding sampling process. Since the servo sampling system of the present invention can automatically sample the sampling position, the sampling efficiency is improved.

[0083] It should be noted that the above-mentioned sampling process may include a barrel oil entering the cavity process, a barrel oil entering the cavity process, a waste discharge process and a sampling process; wherein: during the barrel oil entering the cavity process, the oil in the sampling barrel 203 enters the oil collecting cavity 108 through a pipeline; during the barrel oil entering the cavity process, the oil at the sampling position in the storage tank enters the sampling barrel 203; in the waste discharge process, the oil in the oil collecting cavity 108 is discharged into the storage tank through a pipeline; in the sampling process, the oil in the oil collecting cavity 108 is discharged into the sampling cup 109.

[0084] In some possible embodiments of the present invention, the sampling control mechanism 100 includes a first valve 101, a second valve 102, a third valve 103, a fourth valve 104, a fifth valve 105, a sixth valve 106, a seventh valve 107, an oil collecting chamber 108, a first interface 100a, a second interface 100b, a third interface 100c, a fourth interface 100d and a first controller, wherein: the first interface 100a is connected to the nitrogen generator 302 through a pipeline; the second interface 100b and the fourth interface 100d are connected to the servo sampling mechanism 200 through a pipeline; the third interface 100c is connected to the storage tank through a pipeline; the sample outlet of the oil collecting chamber 108 is connected to the nitrogen generator 302 through a pipeline. The pipeline is connected to the first valve 101; the first inlet of the oil collecting chamber 108 is connected to the first interface 100a through the third valve 103, and is connected to the third interface 100c through the seventh valve 107; the second inlet of the oil collecting chamber 108 is connected to the second interface 100b through the fifth valve 105 through the pipeline; the waste outlet of the oil collecting chamber 108 is connected to the third interface 100c through the second valve 102; the first interface 100a is connected to the fourth interface 100d through the fourth valve 104, and the fourth valve 104 is connected to the third interface 100c through the sixth valve 106; the first controller controls the conduction status of the corresponding valve according to the sampling instruction to execute the corresponding sampling process.

[0085] The first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, the sixth valve 106 and the seventh valve 107 are switch valves, solenoid valves, hydraulically controlled valves, solenoid-hydraulic controlled valves, etc. The first controller controls the opening or closing of each valve to connect different pipelines to perform different sampling processes.

[0086] See also Figure 2 During the barrel oil entering the chamber process, the first controller controls the fourth valve 104, the fifth valve 105 and the seventh valve 107 to open, and the first valve 101, the second valve 102, the third valve 103 and the sixth valve 106 to close. The high-pressure gas generated by the nitrogen generator 302 enters the upper part of the sampling barrel 203 through the pipeline and the fourth valve 104, and begins to pressurize the interior of the sampling barrel 203. At this time, the oil enters the bottom of the oil collecting chamber 108 through the pipeline and the fifth valve 105, and the air in the upper part of the oil collecting chamber 108 enters the storage tank through the seventh valve 107.

[0087] See also Figure 3 During the oil-filling process, the first controller controls the sixth valve 106 to open, and the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the seventh valve 107 are closed; when the sixth valve 106 is opened, the air pressure inside the sampling barrel 203 is lost. At this time, under the pressure of the oil product, the one-way valve of the sampling barrel 203 is automatically opened, and the oil product enters the sampling barrel 203.

[0088] See also Figure 4During the waste discharge process: the first controller controls the second valve 102 and the third valve 103 to be opened, and the first valve 101, the fourth valve 104, the fifth valve 105, the sixth valve 106 and the seventh valve 107 to be closed; the high-pressure nitrogen generated by the nitrogen generator 302 structure 300 enters the upper part of the oil collecting chamber 108 through the pipeline and the third valve 103, the gas pressure in the upper part of the oil collecting chamber 108 increases, and the waste oil inside the oil collecting chamber 108 is discharged back to the storage tank through the second valve 102.

[0089] See also Figure 5 During the sampling process: the first controller controls the first valve 101 and the seventh valve 107 to open, and the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 to close. The gas in the storage tank enters the oil collecting chamber 108 through the seventh valve 107, and the oil in the oil collecting chamber 108 flows into the sampling cup 109 through the first valve 101.

[0090] The servo sampling mechanism 200 drives the sampling barrel 203 to move to the sampling position for sampling. Figure 6 , the specific structure of the servo sampling mechanism 200 is provided in the example of the present invention. The servo sampling mechanism 200 includes a base 201, a servo drive device, a sampling barrel 203 and a second controller, wherein the base 201 is used to be installed on the installation port of the storage tank; the sampling barrel 203 is fixed to the rotating strand of the servo drive device through a traction rope and can be wound around the circumference of the rotating strand, the first conveying hose 200a of the sampling barrel 203 is connected to the second interface 100b, and the second conveying hose 200b of the sampling barrel 203 is connected to the fourth interface 100d; the fixed end of the servo drive device is set on the base 201; the second controller controls the servo drive device to drive the sampling barrel 203 to move to the sampling position according to the sampling instruction.

[0091] The sampling position monitoring is based on the following principle: in the initial state, the traction rope 2031 is wound around the rotating strand 2026 for a relatively fixed number of turns. The rotating strand 2026 rotates one circle and the sampling barrel 203 descends to a certain height, while the servo drive device 202 rotates a corresponding number of circles. By recording the number of turns of the servo drive device 202, the current sampling position of the sampling barrel 203 can be known. For example: when the sampling barrel 203 just touches the oil surface, the number of turns of the servo drive device 202 is zero. When the sampling barrel 203 descends h1, the number of turns of the servo drive device 202 is n1; when the sampling barrel 203 descends h2, the number of turns of the servo drive device 202 is n2; ... When the sampling barrel 203 is at different positions, the number of turns of the servo drive device 202 is also different, thereby measuring the sampling position of the sampling barrel 203. In some examples of the present invention, in order to obtain the target sampling position. The second controller 204 receives the sampling instruction for extracting the target sampling position, and converts the target position into the target number of rotations; compares and records the number of rotations of the servo drive device 202 with the target number of rotations, and when the number of rotations is the same as the target number of rotations, the sampling barrel 203 stops moving, otherwise it continues to move.

[0092] See also Figures 7 to 9 The servo drive device 202 includes a shell 2021, a stepper motor 2022, a reducer 2023, a magnetic coupling 2024, a stock rotating shaft 2025 and a stock rotating shaft 2026, wherein the shell 2021 is fixed on the base 201100; the output shaft of the stepper motor 2022 is transmission-connected with the input shaft of the reducer 2023; a first bearing 2027 is arranged between the output shaft of the reducer 2023 and the shell 2021; the magnetic coupling 2024 is transmission-connected with the output shaft of the reducer 2023 and the stock rotating shaft 2025; the stock rotating shaft 2026 is fixed on the stock rotating shaft 2025.

[0093] When the stepper motor 2022 runs in the first direction, the torque output by the stepper motor 2022 drives the rotating shaft 2025 to rotate in the counterclockwise direction under the transmission of the reducer 2023 and the magnetic coupling 2024, and the rotating shaft 2026 rotates in the counterclockwise direction following the rotating shaft 2025, thereby causing the sampling barrel 203 to move downward; when the stepper motor 2022 runs in the second direction, the torque output by the stepper motor 2022 drives the rotating shaft 2025 to rotate in the clockwise direction under the transmission of the reducer 2023 and the magnetic coupling 2024, and the rotating shaft 2026 rotates in the clockwise direction following the rotating shaft 2025, thereby causing the sampling barrel 203 to move upward.

[0094] The force of the traction rope 2031 on the transfer unit 2026 can be finally transmitted to the reducer 2023, the induction element 20231 is arranged on the reducer 2023, and the weighing sensor 400 is arranged on the housing 2021. Alternatively, the induction element 20231 is arranged on the housing 2021, and the weighing sensor 400 is arranged on the reducer 2023. The present invention adopts a structure in which the induction element 20231 is arranged on the reducer 2023, and the weighing sensor 400 is arranged on the housing 2021.

[0095] In order to improve the compactness of the structure of the servo drive device 202 in the present invention, a bearing seat 2028 is arranged between the first bearing 2027 and the housing 2021, the inner ring of the first bearing 2027 is fixed on the output shaft of the reducer 2023, the outer ring of the first bearing 2027 is fixed on the bearing seat 2028, and the bearing seat 2028 is fixed on the housing 2021.

[0096] The function of the magnetic coupling 2024 is to transmit the torque output by the reducer 2023 to the rotating shaft 2025. The magnetic coupling 2024 of the present invention is but not limited to a magnetic coupling magnetic coupling 2024. In one example of the present invention, the magnetic coupling 2024 includes a first magnetic coupling 20241 disposed on the output shaft of the reducer 2023; and a second magnetic coupling 20241 disposed on the rotating shaft 2025, and the first magnetic coupling 20241 and the second magnetic coupling 20241 are connected by magnetic coupling.

[0097] In one example of the present invention, the first magnetic coupling member 20241 includes but is not limited to a first magnet support 20241a fixed on the output shaft of the reducer 2023, an outer shell 20241b sleeved on the first magnet support 20241a, and a first magnet 20241c disposed between the first magnet support 20241a and the outer shell 20241b. When the output shaft of the reducer 2023 outputs torque, the first magnet support 20241a rotates with the output shaft of the reducer 2023.

[0098] In order to improve the compactness of the servo drive device 202, the end surface of the outer shell 20241b close to the second magnetic coupling member 20241 is provided with a mounting hole for accommodating the rotating shaft 2025. In this way, a part of the rotating shaft 2025 can be deeply inserted into the mounting hole, thereby reducing the effective occupied space of the rotating shaft 2025.

[0099] Further, a second bearing 2029 is provided between the hole wall of the mounting hole and the stock rotating shaft 2025. By providing the second bearing 2029, the stock rotating shaft 2025 can be effectively supported, making the operation process more stable.

[0100] In some examples of the present invention, the second magnetic coupling member 20241 includes a second magnet support 20242a disposed on the rotating shaft 2025, and a second magnet 20242b disposed on the second magnet support 20242a, and the second magnet 20242b is magnetically connected to the first magnet 20241c. The second magnetic coupling member 20241 and the first magnetic coupling member 20241 are located at the end face of the first magnetic coupling member 20241 and the end face of the second magnetic coupling member 20241 through the coupling surface interacting with each other, and can also be located at the outer peripheral surface of the first magnetic coupling member 20241 and the inner peripheral surface of the second magnetic coupling member 20241, and can also be located at the inner peripheral surface of the first magnetic coupling member 20241 and the outer peripheral surface of the second magnetic coupling member 20241. In the preferred embodiment of the present invention, the second magnetic coupling member 20241 and the first magnetic coupling member 20241 are located on the outer circumference of the first magnetic coupling member 20241 and the inner circumference of the second magnetic coupling member 20241 through the interacting coupling surface. Specifically, the second magnet support 20242a is sleeved on the outer shell 20241b; the second magnet 20242b is arranged on the inner circumference of the second magnet support 20242a; the first magnet 20241c is arranged on the outer circumference of the first magnet support 20241a. The second magnet 20242b and the first magnet 20241c are but not limited to permanent magnets, magnets, etc.

[0101] The number of the above-mentioned transfer strands 2026 is adjusted according to the number of the traction ropes 2031. The number of the traction ropes 2031 is one or more, wherein one traction rope 2031 corresponds to one transfer strand 2026, or multiple traction ropes 2031 correspond to one transfer strand 2026. In the figure, the number of the traction ropes 2031 is two, and each traction rope 2031 corresponds to one transfer strand 2026, so as to reduce the mutual interference between the two traction ropes 2031.

[0102] The nitrogen generator 302 is used to provide high-pressure nitrogen for the sampling control mechanism 100 and the servo sampling mechanism 200. Fig.10 The nitrogen generator 302 structure 300 shown in the figure includes an air compressor 301, a nitrogen generator 302, a gas storage tank 303, a first pressure sensor and a third controller, wherein: the outlet of the air compressor 301 is connected to the inlet of the nitrogen generator 302, the outlet of the nitrogen generator 302 is connected to the inlet of the gas storage tank 303, and the outlet of the gas storage tank 303 is connected to the first interface 100a as the interface 300a of the nitrogen generator 302 structure 300; the first pressure sensor is used to collect the pressure value of the gas storage tank 303; the third controller controls the operating conditions of the air compressor 301, the nitrogen generator 302 and the gas storage tank 303. When executing the nitrogen making process, when the pressure value is less than the first pressure threshold, the third controller controls the nitrogen generator 302 and the air compressor 301 to operate; when the pressure value is greater than the second pressure threshold, the third controller controls the nitrogen generator 302 and the air compressor 301 to stop operating.

[0103] The first pressure threshold and the second pressure threshold are adjusted according to actual needs. For example, the first pressure threshold is 0.4 MPa and the second pressure threshold is 0.6 MPa.

[0104] See also Fig.11 , Fig.11 A flow chart of a servo sampling method is disclosed. The servo sampling method uses any of the above servo sampling systems, and the sampling method is executed by a controller of the servo sampling system, which may be an existing controller in the servo sampling system or an additional controller. Specifically, the servo sampling method includes:

[0105] S11, obtaining sampling instructions;

[0106] S12, the nitrogen making mechanism executes the nitrogen making process according to the sampling instruction;

[0107] S13, the servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction;

[0108] S14. The sampling control mechanism controls the operating conditions of the nitrogen generation mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to execute the corresponding sampling process.

[0109] It should be noted that the above sampling instructions can be input on the second controller, and an operation button can be directly set. Once the operation button is triggered, automatic sampling can be performed according to the set process. Sampling instructions include single-point sampling instructions, multi-point sampling instructions and mixed sampling instructions. Among them, single-point sampling instructions can be understood as sampling at one point; multi-point sampling instructions can be understood as sampling at multiple points; mixed sampling can be understood as sampling at several points.

[0110] See also Fig.12 , when it is a single-point sampling instruction, the servo sampling method includes:

[0111] S21, obtaining a sampling instruction;

[0112] S22, the nitrogen making mechanism performs the nitrogen making process;

[0113] S23, the servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the single-point sampling instruction;

[0114] S24, the sampling control mechanism executes the corresponding sampling process.

[0115] See also Fig.13 , when it is a multi-point sampling instruction; the servo sampling method includes:

[0116] S31, obtaining a sampling instruction;

[0117] S32, the nitrogen making mechanism performs the nitrogen making process;

[0118] S33, the servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position of the corresponding point according to the multi-point sampling instruction, and the sampling control mechanism executes the corresponding sampling process;

[0119] S34, until the sampling of all points is completed.

[0120] exist Fig.13 Based on the servo sampling method shown, the servo sampling method also includes: obtaining the oil level in the storage tank and the number of sampling points; and determining the sampling positions of corresponding points according to the level and the number of sampling points.

[0121] The oil level is obtained by setting a level meter, and the level meter transmits the measured level to the first controller, and the first controller determines the sampling position of each sampling point according to the number of sampling points.

[0122] And / or the servo sampling method also includes: obtaining the oil level in the storage tank; calculating the number of sampling points and sampling positions according to the pre-stored correspondence between the liquid level and the sampling points. The correspondence between the liquid level and the sampling points can be a common industry standard, that is, when the liquid level is determined, the number of sampling points and the sampling position of each sampling point can be obtained.

[0123] Whether it is single-point sampling or multi-point sampling, the sampling process for each point is basically the same. The sampling process includes the barrel oil entering the cavity process, the barrel oil entering the cavity process, the waste discharge process and the sampling process; during the barrel oil entering the cavity process, the oil in the sampling barrel enters the oil collecting cavity through the pipeline; during the barrel oil entering the cavity process, the oil at the sampling position in the storage tank enters the sampling barrel; during the waste discharge process, the oil in the oil collecting cavity is discharged into the storage tank through the pipeline; during the sampling process, the oil in the oil collecting cavity is discharged into the sampling cup.

[0124] The servo sampling method further includes: storing the corresponding relationship between the sampling point and the sampling position, and tracing back the historical sampling data according to the operation record.

[0125] It should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0126] It should be understood that the "system", "device", "unit" and / or "module" used in the present invention is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0127] As shown in the present invention and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0128] In the description of the embodiments of the present invention, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present invention, "multiple" means two or more than two.

[0129] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0130] The present invention uses a flow chart to illustrate the operations performed by the system according to an embodiment of the present invention. It should be understood that the preceding or following operations are not necessarily performed precisely in order. On the contrary, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0131] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used, and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. The scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. A servo sampling system, characterized in that: It includes a sampling control mechanism, a servo sampling mechanism and a nitrogen making mechanism, wherein: The nitrogen production mechanism is connected to the sampling control mechanism and performs a nitrogen production process according to a sampling instruction; The servo sampling mechanism is arranged at the installation port of the storage tank and is connected to the sampling control mechanism through a delivery hose. The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction; The sampling control mechanism controls the operation status of the nitrogen generation mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to perform the corresponding sampling process; The sampling process includes barrel oil cavity entry process, barrel oil entry process, waste discharge process and sample discharge process; during the barrel oil cavity entry process, the oil in the sampling barrel enters the oil collecting cavity through the pipeline; during the barrel oil entry process, the oil at the sampling position in the storage tank enters the sampling barrel; in the waste discharge process, the oil in the oil collecting cavity is discharged into the storage tank through the pipeline; in the sample discharge process, the oil in the oil collecting cavity is discharged into the sampling cup; The sampling control mechanism includes a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, an oil collecting chamber, a first interface, a second interface, a third interface, a fourth interface and a first controller, wherein: the first interface is connected to the nitrogen generating mechanism through a pipeline; the second interface and the fourth interface are connected to the servo sampling mechanism through a pipeline; the third interface is connected to the storage tank through a pipeline; the sample outlet of the oil collecting chamber is connected to the first valve through a pipeline; the first inlet of the oil collecting chamber is connected to the first interface through the third valve, and is connected to the fourth interface through the seventh valve; the second inlet of the oil collecting chamber is connected to the second interface through the fifth valve through a pipeline; the waste outlet of the oil collecting chamber is connected to the third interface through the second valve; the first interface is connected to the third interface through the fourth valve, and the fourth valve is connected to the fourth interface through the sixth valve; the first controller controls the conduction status of the corresponding valve according to the sampling instruction to execute the corresponding sampling process.

2. The servo sampling system according to claim 1, characterized in that: During the barrel oil entering the cavity process, the first controller controls the fourth valve, the fifth valve and the seventh valve to be opened, and the first valve, the second valve, the third valve and the sixth valve to be closed; During the barrel oil filling process: the first controller controls the sixth valve to be opened, and the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the seventh valve to be closed; During the waste discharge process: the first controller controls the second valve and the third valve to be opened, and the first valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve to be closed; During the sample arrangement process: the first controller controls the first valve and the seventh valve to be opened, and the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve to be closed.

3. The servo sampling system according to claim 1, wherein: The servo sampling mechanism includes a base, a servo drive device, a sampling barrel and a second controller, wherein: The base is used to be installed on the installation opening of the storage tank; The sampling barrel is fixed to the rotating part of the servo drive device by a traction rope and can be wound around the circumference of the rotating part. The first conveying hose of the sampling barrel is connected to the second interface, and the second conveying hose of the sampling barrel is connected to the fourth interface. The fixed end of the servo drive device is arranged on the base; The second controller controls the servo drive device to drive the sampling barrel to move to the sampling position according to the sampling instruction.

4. The servo sampling system according to claim 1, wherein: The nitrogen making mechanism comprises an air compressor, a nitrogen making machine, a gas storage tank, a first pressure sensor and a third controller, wherein: The outlet of the air compressor is communicated with the inlet of the nitrogen generator, the outlet of the nitrogen generator is communicated with the inlet of the gas storage tank, and the outlet of the gas storage tank is communicated with the first interface; the first pressure sensor is used to collect the pressure value of the gas storage tank; The third controller controls the operating conditions of the air compressor, the nitrogen generator and the gas storage tank. When executing the nitrogen making process, when the pressure value is less than the first pressure threshold, the third controller controls the nitrogen generator and the air compressor to operate; when the pressure value is greater than the second pressure threshold, the third controller controls the nitrogen generator and the air compressor to stop operating.

5. A servo sampling method, characterized in that: The servo sampling system according to any one of claims 1 to 4 is applied, wherein the servo sampling method comprises: Get sampling instructions; The nitrogen production mechanism executes the nitrogen production process according to the sampling instruction; The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the sampling instruction; The sampling control mechanism controls the operation status of the nitrogen generation mechanism, the sampling control mechanism and the servo sampling mechanism according to the sampling instruction to execute the corresponding sampling process.

6. The servo sampling method according to claim 5, wherein: The sampling instructions include single-point sampling instructions, multi-point sampling instructions and mixed sampling instructions.

7. The servo sampling method according to claim 6, wherein: When it is a single-point sampling instruction, the servo sampling method includes: The nitrogen making mechanism performs the nitrogen making process; The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position according to the single-point sampling instruction; The sampling control mechanism executes the corresponding sampling process.

8. The servo sampling method according to claim 6, wherein: When it is a multi-point sampling instruction; the servo sampling method includes: The nitrogen making mechanism performs the nitrogen making process; The servo sampling mechanism drives the sampling barrel of the servo sampling mechanism to move to the sampling position of the corresponding point according to the multi-point sampling instruction, and the sampling control mechanism executes the corresponding sampling process; Until all points are sampled.

9. The servo sampling method according to claim 8, wherein: The servo sampling method further comprises: Get the oil level in the tank and the number of sampling points; The sampling positions of the corresponding points are determined according to the liquid level and the number of sampling points.

10. The servo sampling method according to claim 8, wherein: The servo sampling method further comprises: Get the oil level in the tank; The number and location of the sampling points are calculated based on the pre-stored correspondence between the liquid level and the sampling points.

11. The servo sampling method according to claim 6, wherein: The sampling process includes barrel oil cavity filling process, barrel oil filling process, waste discharge process and sample discharge process; During the barrel oil entering the chamber process, the oil in the sampling barrel enters the oil collecting chamber through the pipeline; During the barrel oil filling process, the oil at the sampling position in the storage tank enters the sampling barrel; During the waste discharge process, the oil in the oil collecting chamber is discharged into the storage tank through the pipeline; During the sampling process, the oil in the oil collecting chamber is discharged into the sampling cup.

12. The servo sampling method according to claim 6, wherein: The servo sampling method further includes: storing the corresponding relationship between the sampling points and the sampling positions.

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