Automatic oil sampling device

Abstract

The invention discloses an automatic oil sampling device which comprises a sampling mechanism, a distance measuring mechanism and a lifting mechanism, the sampling mechanism comprises a sampling bottle, an upper end cover and a lower end cover, the upper end cover and the lower end cover are in threaded connection with the sampling bottle, a hanging ring is arranged at the top of the upper end cover, a pipeline and an electromagnetic valve are arranged on the lower end cover, and the pipeline is communicated with the sampling bottle; the distance measuring mechanism comprises an ultrasonic distance measuring sensor, an alarm and a single-chip microcomputer, the ultrasonic distance measuring sensor is arranged at the bottom of the lower end cover and electrically connected with the single-chip microcomputer, the lifting mechanism comprises a driving part, a support, a winding drum and a lifting rope, and the winding drum is arranged at the top of the support and connected with the support in a pivoted mode. The lifting rope and the cable are wound on the winding drum to descend or ascend along with rotation of the winding drum. The driving piece is in transmission connection with the winding drum. The automatic oil sampling device provided by the invention has the advantages that the sampling is accurate and quick, and the sample is not easy to pollute.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank sampling, in particular to an automatic oil sampling device. Background Art

[0002] The oil system of a hydropower plant is typically located within the plant building or underground, equipped with oil storage tanks to meet daily operation and maintenance needs. Due to factors such as temperature distribution, oil quality degradation, and impurity sedimentation, the oil in the tanks often stratifies. Sampling and testing each oil layer within the tank is necessary to ensure comprehensiveness and accurate analysis, thereby preventing partial oil samples from influencing the assessment of oil performance. Current manual sampling methods are cumbersome, inaccurate, and prone to contamination with unrelated oil samples during the sampling process. The resulting oil samples are poorly representative and cannot fully evaluate the oil quality in the equipment under test. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides an automatic oil sampling device, which has the advantages of accurate and fast sampling and low sample contamination.

[0004] According to an automatic oil sampling device according to an embodiment of the present invention, the automatic oil sampling device includes a sampling mechanism, a distance measuring mechanism and a lifting mechanism. The sampling mechanism includes a sampling bottle, an upper end cover and a lower end cover. The upper end cover and the lower end cover are respectively threadedly connected to the sampling bottle to close the top and bottom of the sampling bottle. A hanging ring is provided on the top of the upper end cover, and a pipeline and a solenoid valve are provided on the lower end cover. The pipeline is connected to the sampling bottle, and the solenoid valve is used to open and close the pipeline. The distance measuring mechanism includes an ultrasonic distance measuring sensor, an alarm and a single-chip microcomputer. The ultrasonic distance measuring sensor is arranged at the bottom of the lower end cover and is electrically connected to the single-chip microcomputer Then, the single chip microcomputer receives the signal of the ultrasonic ranging sensor and calculates the depth of the sampling bottle. The single chip microcomputer controls the alarm to prompt that the sampling bottle has reached the target depth position. The signal line of the ultrasonic ranging sensor and the power line of the solenoid valve are merged into the cable. The lifting mechanism includes a driving member, a bracket, a reel and a hanging rope. The reel is arranged on the top of the bracket and is pivotally connected to the bracket. The hanging rope and the cable are wound on the reel and descend or rise with the rotation of the reel. The driving member is connected to the reel for driving the reel to rotate, and the hanging rope is connected to the hanging ring.

[0005] The automatic oil sampling device according to the embodiment of the present invention has the advantages of accurate and fast sampling and the sample is not easily contaminated. The present application has the following advantages: based on ultrasonic ranging technology, the sampler is lowered to the oil tank by a rope wrapped around the reel, and the ultrasonic ranging sensor probe and the single-chip microcomputer measure and convert the depth of the sampling bottle in real time. After the sampling bottle reaches the predetermined depth, the alarm prompts the operator to take a sample. At this time, the sampler can be filled with oil by opening the solenoid valve at the bottom of the sampler. After the oil filling is completed, the solenoid valve is closed to prevent irrelevant oil samples from seeping into the sampler, and the sampler is reclaimed by the rope driven by the reel. Accurate and fast sampling of any oil layer in the oil tank can be achieved, while reducing the contamination of the oil sample during the sampling process, ensuring that the test results represent the overall oil quality, and providing reliable data support for the evaluation of oil performance indicators and equipment maintenance.

[0006] In some embodiments, the lifting mechanism further includes a partition cover, which divides the drum into two parts, the cables and the slings are respectively wound around two sides of the partition cover, and protective covers are arranged on both sides of the drum to block the cables and the slings.

[0007] In some embodiments, the lifting mechanism further includes an anti-slip base, and the anti-slip base is arranged at the bottom of the bracket.

[0008] In some embodiments, the driving member is a handle, which is arranged at one end of the reel to drive the reel to rotate.

[0009] In some embodiments, two lifting ears are provided on the top of the upper end cover, the lifting ears are symmetrically arranged with respect to the upper end cover, and the lifting ring is connected to the two lifting ears respectively.

[0010] In some embodiments, the pipeline includes an upper joint, a passage and a lower joint that are connected in sequence, the passage is located in the solenoid valve, the upper joint is connected to the sampling bottle through the lower end cover, and the side of the lower joint is connected to the ultrasonic ranging sensor.

[0011] In some embodiments, the automatic oil sampling device further includes a display screen, which is electrically connected to the single chip microcomputer to display the depth of the sampler.

[0012] In some embodiments, the alarm is a buzzer and / or an indicator light, and the buzzer and the indicator light are both electrically connected to the single chip microcomputer.

[0013] In some embodiments, a partition is provided in the sampling bottle to divide the interior of the sampling bottle into multiple sampling chambers, a sample delivery pipeline is provided on the partition and is respectively connected to each sampling chamber, and multiple control valves are provided on the sample delivery pipeline, and the control valves correspond one-to-one to the sampling chambers.

[0014] In some embodiments, a diamond grid or spiral pattern is provided on the surface of the drum to increase the friction between the surface of the drum and the rope and the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 2 is a schematic structural diagram of an automatic oil sampling device according to an embodiment of the present invention.

[0016] Figure 2 2 is a schematic diagram of an explosion and decomposition of an automatic oil sampling device according to an embodiment of the present invention.

[0017] Figure 3 4 is a cross-sectional schematic diagram of a sampling bottle and a solenoid valve of an automatic oil sampling device according to an embodiment of the present invention.

[0018] Figure numerals: 1. reel; 2. partition cover; 3. lifting rope; 4. cable; 5. bracket; 6. base; 7. protective cover; 8. handle; 9. sampling bottle; 10. upper end cover; 11. lower end cover; 12. lifting ear; 13. lifting ring; 14. solenoid valve; 15. upper connector; 16. lower connector; 17. passage; 18. power cord; 19. signal line; 20. ultrasonic ranging sensor; 23. single-chip microcomputer. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] According to the automatic oil sampling device of the embodiment of the present invention, the automatic oil sampling device includes a sampling mechanism, a distance measuring mechanism and a lifting mechanism. The sampling mechanism includes a sampling bottle 9, an upper end cover 10 and a lower end cover 11. The upper end cover 10 and the lower end cover 11 are respectively threadedly connected to the sampling bottle 9 to close the top and bottom of the sampling bottle 9. A lifting ring 13 is provided on the top of the upper end cover 10, and a pipeline and a solenoid valve 14 are provided on the lower end cover 11. The pipeline is connected to the sampling bottle 9, and the solenoid valve 14 is used to open and close the pipeline. The distance measuring mechanism includes an ultrasonic distance sensor 20, an alarm and a single-chip microcomputer. The ultrasonic distance sensor 20 is arranged at the bottom of the lower end cover 11 and It is electrically connected to the single-chip microcomputer, which receives the signal of the ultrasonic ranging sensor 20 and calculates the depth of the sampling bottle 9. The single-chip microcomputer controls the alarm to prompt that the sampling bottle 9 has reached the target depth position. The signal line 19 of the ultrasonic ranging sensor 20 and the power line 18 of the solenoid valve 14 are merged into the cable 4. The lifting mechanism includes a driving member, a bracket 5, a reel 1 and a hanging rope 3. The reel 1 is arranged on the top of the bracket 5 and is pivotally connected to the bracket 5. The hanging rope 3 and the cable 4 are wound on the reel 1 and descend or ascend as the reel 1 rotates. The driving member is connected to the reel 1 for driving the reel 1 to rotate. The hanging rope 3 is connected to the lifting ring 13. The sampling mechanism controls the injection of sample into the sampling bottle 9 by opening and closing the pipeline via solenoid valve 14. The distance-measuring mechanism uses ultrasonic distance-measuring sensor 20 to determine the depth of the sampling bottle 9, achieving non-contact measurement suitable for complex environments such as oil tanks. Under the calculation and control of the single-chip microcomputer, the preset target depth value determines whether the sampling bottle 9 has reached the target position, and the alarm is controlled to issue a prompt signal. The operator triggers solenoid valve 14 to open the sampling bottle 9 and begin collecting oil samples. After sampling is completed, solenoid valve 14 is triggered again to close the sampling bottle 9 to prevent contamination of the sampling bottle 9. The lifting mechanism rotates the reel 1 via a drive element. The rotation of the reel 1 causes the suspension rope 3 to wrap around it and lift the sampling bottle 9. The reverse rotation of the reel 1 causes the suspension rope 3 to detach from the reel 1, and the suspension rope 3 and the sampling bottle 9 descend under the action of gravity. The ultrasonic distance-measuring sensor 20 is significantly affected by temperature, so a direct immersion probe with automatic temperature compensation is selected.

[0021] In some embodiments, the lifting mechanism further includes a partition cover 2, which divides the drum 1 into two parts, and the cable 4 and the suspension rope 3 are respectively wound on both sides of the partition cover 2. Protective covers 7 are arranged on both sides of the drum 1 to block the cable 4 and the suspension rope 3.

[0022] Specifically, the separator cover 2 divides the reel 1 into two independent areas, allowing the cable 4 and the sling 3 to be wound on either side of the separator cover 2, thereby preventing the cable 4 and the sling 3 from interfering with each other, becoming tangled, or winding unevenly when wound on the reel 1. The separator cover 2 can be made of metal or high-strength plastic and is a ring that fits over the reel 1.

[0023] The protective cover 7 is installed on both sides of the reel 1 to prevent the cable 4 and the sling 3 from loosening or deviating from the reel 1 due to external forces during the lifting process. The protective cover 7 can also prevent dust, debris, etc. from entering the interior of the reel 1, affecting the normal winding and service life of the cable 4 and the sling 3. The protective cover 7 is arranged at the end of the reel 1. The size of the protective cover 7 is larger than the diameter of the reel 1. The protective cover 7 can be made of transparent material to facilitate observation of the winding status of the cable 4 and the sling 3. The protective cover 7 can be circular. The blocking effect of the protective cover 7 can effectively prevent the cable 4 and the sling 3 from loosening due to external forces during the lifting process, avoiding safety hazards such as the uncontrolled falling of the sampling bottle 9 due to the loosening of the cable 4 or the sling 3.

[0024] Optionally, the reel 1 is provided with independent winding grooves on both sides of the partition cover 2. The winding grooves ensure that the cable 4 and the sling 3 can be neatly wound on the reel 1. The width and depth of the winding grooves are adapted to the diameters of the cable 4 and the sling 3. Since the cable 4 and the sling 3 are separated, maintenance can be performed on the cable 4 or the sling 3 separately without interfering with each other.

[0025] In some embodiments, the lifting mechanism further includes an anti-skid base 6 , which is arranged at the bottom of the bracket 5 .

[0026] Specifically, the anti-skid base 6 can be made of rubber material, which is used to increase friction. The bracket 5 is a metal frame, and each of the four legs of the metal frame is equipped with an anti-skid base 6. On the one hand, the contact area between the legs and the ground is increased, and the friction is increased to prevent the legs from slipping. On the other hand, the anti-skid base 6 supports and cushions the metal frame, reducing the damage of the metal frame to the oil tank or other equipment. The anti-skid base 6 can be fixed to the foot of the bracket 5 by an adhesive, or connected to the bracket 5 by a buckle or screw to ensure that it is firm and reliable. The anti-skid base 6 can effectively prevent the device from tipping over due to external forces (such as accidental collision by the operator or uneven ground), and avoid safety accidents such as damage to the sampling bottle 9 and oil sample leakage caused by the tipping of the device.

[0027] Optionally, the surface of the anti-slip base 6 is designed with an anti-slip texture, such as a wave pattern or a grid pattern. The anti-slip texture further increases friction with the ground, preventing the device from sliding. The rubber base 6 has a certain degree of elasticity, which can absorb some external impact and act as a buffer, thereby reducing the shaking of the device caused by vibration or impact during operation.

[0028] In some embodiments, the driving member is a handle 8 , which is disposed at one end of the reel 1 to drive the reel 1 to rotate.

[0029] Specifically, the drive element utilizes a handle 8, which manually rotates the drum 1, thereby driving the lifting and lowering of the sling 3 and sampling bottle 9. This eliminates the need for complex electrical equipment or control systems, minimizing the impact of electrical equipment on oil tank production safety. The handle 8 is an L-shaped or curved crank, connected to the drum 1. During operation, turning the handle 8 drives the drum 1. A rotation direction indicator can be provided on the handle 8 to indicate the operator's direction of rotation, thereby facilitating the raising and lowering of the sampling bottle 9.

[0030] Optionally, the handle 8 is divided into multiple sections, with the first section fixedly connected to the reel 1 and extending in the axial direction of the reel 1. The second section is perpendicular to the first section and fixedly connected to the first section. The third section is rotatably connected to an end of the second section away from the first section, and extends in the axial direction of the reel 1 and is parallel to the first section. The user can drive the first section to rotate by pushing the third section. If necessary, a transmission belt or motor can be connected to the third section to drive the handle 8 to rotate, saving the user's physical strength.

[0031] In some embodiments, two lifting ears 12 are provided on the top of the upper end cover 10 . The lifting ears 12 are symmetrically arranged with respect to the upper end cover 10 , and the lifting rings 13 are connected to the two lifting ears 12 respectively.

[0032] Specifically, the two lifting ears 12 are used to connect the lifting ring 13, and the lifting ring 13 is connected to the lifting mechanism through the lifting rope 3, so as to realize the lifting and lowering operation of the sampling bottle 9. The symmetrically arranged lifting ears 12 can ensure that the lifting ring 13 is evenly distributed when subjected to force, avoiding the sampling bottle 9 from tilting due to uneven force, which is conducive to the sampling bottle 9 maintaining a neutral posture and remaining vertical during the lowering process. The lifting ears 12 are fixed to the top of the upper end cover 10 by welding, threaded connection or snap connection, and a connecting hole is provided on the lifting ear 12 for connecting the lifting ring 13. The lifting rope 3 is connected to the middle position of the lifting ring 13 to avoid the sampling bottle 9 from tilting due to uneven force on the lifting ring 13. The shape of the lifting ring 13 itself is also symmetrical, which reduces the shaking of the sampling bottle 9 during the lifting process and improves the stability of the sampling process.

[0033] In some embodiments, the pipeline includes an upper connector 15, a passage 17 and a lower connector 16 that are connected in sequence. The passage 17 is located in the solenoid valve 14. The upper connector 15 is connected to the sampling bottle 9 through the lower end cover 11. The side of the lower connector 16 is connected to the ultrasonic ranging sensor 20.

[0034] Specifically, the upper connector 15, passage 17, and lower connector 16 cooperate to realize the oil delivery route from the pipeline to the sampling bottle 9, forming a complete oil sample flow path. The upper connector 15 passes through the lower end cap 11 and enters the sampling bottle 9, realizing the connection between the sampling bottle 9 and the pipeline and ensuring the reliability of sampling. The lower connector 16 serves as the sampling port for extracting oil samples. The solenoid valve 14 controls the opening and closing of passage 17 to realize the flow control of the oil sample. The rapid response of the solenoid valve 14 can accurately control the start and end of the sampling process, improving the sampling accuracy. The ultrasonic ranging sensor 20 is tied to the lower connector 16 with a clamp, and the position of the lower connector 16 is used as the sampling depth.

[0035] Optionally, a filter is provided at the lower joint 16 to filter out large particles of impurities in the oil, thereby protecting the passage 17. The aperture of the filter is adjusted according to the actual working conditions. A larger aperture of the filter can filter out larger debris while ensuring that the filter does not increase excessive resistance to the flow of the oil.

[0036] In some embodiments, the automatic oil sampling device further includes a display screen, which is electrically connected to the single chip microcomputer to display the depth of the sampler.

[0037] Specifically, the display screen cooperates with the display circuit to display the depth of the sampling bottle 9 in real time, allowing the operator to directly observe and read the data. The display screen is connected to the single-chip microcomputer and placed together for easy operation and observation by the operator. The display circuit is responsible for processing the data output by the single-chip microcomputer and converting it into a signal that can be recognized by the display screen.

[0038] In some embodiments, the alarm is a buzzer and / or an indicator light, and both the buzzer and the indicator light are electrically connected to the single chip microcomputer.

[0039] Specifically, the alarm uses a buzzer, indicator light, or a combination of the two. The buzzer sounds an alarm to alert the operator, while the indicator light illuminates to alert the operator. The buzzer's sound allows operators who are not near the equipment to receive the alarm signal in a timely manner, meeting the complex sampling environment of oil tanks and ensuring that the alarm signal is clearly conveyed.

[0040] The illuminated indicator light provides an intuitive visual warning to the operator, allowing them to more quickly determine whether the device is in an alarm state. Different colored indicators can indicate different alarm states or messages. For example, a red indicator light indicates that the sampling bottle 9 has reached the target depth and needs to stop descending; a yellow indicator light indicates that the depth is approaching the target depth, reminding the operator to control the speed; and a green indicator light indicates that the device is operating normally. This allows the operator to more clearly communicate the device's operating status.

[0041] The combination of a buzzer and indicator light provides a dual reminder, attracting the operator's attention through sound and confirming it through visual signals. This dual reminder method can effectively avoid accidents caused by the failure or neglect of a single alarm method.

[0042] In some embodiments, a partition is provided in the sampling bottle 9 to divide the interior of the sampling bottle 9 into multiple sampling chambers. A sample delivery pipeline is provided on the partition to be connected to each sampling chamber respectively. Multiple control valves are provided on the sample delivery pipeline, and the control valves correspond to the sampling chambers one by one.

[0043] Specifically, the partition divides the interior of the sampling bottle 9 into multiple independent sampling chambers evenly or as needed. Each chamber can collect oil samples independently without interfering with each other, ensuring that oil samples at different depths or positions can be stored separately. A single lowering process can perform sampling operations at multiple depths to improve sampling efficiency. It is understandable that the thickness and strength of the partition must meet the requirements of maintaining structural integrity under the pressure of the oil product to prevent oil sample leakage. In the oil tank, oil samples from the upper, middle and lower layers can be collected separately for stratified analysis. Through the automated control of the single-chip microcomputer, the operator only needs to set the sampling depth and program, and the device can automatically complete the sampling operation, which simplifies the operating process and reduces the difficulty of operation.

[0044] Optionally, the sample delivery pipeline is connected in series with each sampling chamber, and a control valve is arranged in the sample delivery pipeline corresponding to each sampling chamber. The control valve is used to control the on-off of the sample delivery pipeline entering the sampling chamber. When a specific depth is reached, the single-chip microcomputer controls the corresponding control valve to open, allowing the oil sample to enter the corresponding chamber. Different sampling modes can be selected according to actual needs, such as single-point sampling, multi-point sampling, timed sampling, etc. For example, when it is necessary to conduct a detailed analysis of the oil sample in the middle of the oil tank, it is possible to choose to open only the control valve of the middle chamber for sampling. For example, when multi-point sampling is performed, the sampling bottle 9 has upper, middle and lower chambers from top to bottom. The control valve of the upper chamber is opened, and the oil sample is sent to the upper chamber. Then, the control valve of the middle chamber is opened, and the oil sample enters the middle chamber. Finally, the control valve of the lower chamber is opened, and the oil sample enters the lower chamber.

[0045] In some embodiments, a diamond grid or spiral pattern is provided on the surface of the drum 1 to increase the friction between the surface of the drum 1 and the rope 3 and cable 4 .

[0046] Specifically, each node of the diamond grid can form multiple points of contact with the rope 3 and the cable 4, thereby increasing friction. The spiral lines are distributed in a spiral shape along the axial direction of the drum 1. The spiral lines can guide the rope 3 and the cable 4 to be wound around the drum 1 in an orderly manner, and during the winding process, the cable 4 and the rope 3 will be embedded in the spiral lines, increasing friction. By increasing the roughness and contact area of ​​the drum 1 surface, the friction between the drum 1 and the rope 3 and the cable 4 can be effectively increased. This helps prevent the rope 3 or the cable 4 from slipping during the lifting process, ensures that the sampling bottle 9 can be lifted and lowered stably, reduces the shaking of the sampling bottle 9 caused by looseness or sliding, and improves the stability of the sampling process. In a humid, oily or dusty environment, the lines on the surface of the drum 1 can better embed the rope 3 and the cable 4, and maintain sufficient friction even under adverse conditions.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Any changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are within the scope of protection of the present invention.

Claims

1. An automatic oil sampling device, characterized in that: include: A sampling mechanism, comprising a sampling bottle, an upper end cover, and a lower end cover, wherein the upper end cover and the lower end cover are respectively threadedly connected to the sampling bottle to close the top and bottom of the sampling bottle, a hanging ring is provided on the top of the upper end cover, and a pipeline and a solenoid valve are provided on the lower end cover, wherein the pipeline is connected to the sampling bottle, and the solenoid valve is used to open and close the pipeline; A distance measuring mechanism includes an ultrasonic distance measuring sensor, an alarm, and a single-chip microcomputer. The ultrasonic distance measuring sensor is arranged at the bottom of the lower end cover and is electrically connected to the single-chip microcomputer. The single-chip microcomputer receives the signal from the ultrasonic distance measuring sensor and calculates the depth of the sampling bottle. The single-chip microcomputer controls the alarm to alert the sampling bottle that it has reached the target depth. The signal line of the ultrasonic distance measuring sensor and the power line of the solenoid valve are combined into a cable. The lifting mechanism includes a driving member, a bracket, a drum and a suspension rope. The drum is arranged on the top of the bracket and is pivotally connected to the bracket. The suspension rope and the cable are wound on the drum and descend or rise as the drum rotates. The driving member is connected to the drum for driving the drum to rotate, and the suspension rope is connected to the lifting ring.

2. The automatic oil sampling device according to claim 1, characterized in that: The invention also comprises a separation cover, which separates the drum into two parts. The cables and the suspension ropes are respectively wound on both sides of the separation cover. Protective covers are arranged on both sides of the drum to block the cables and the suspension ropes.

3. The automatic oil sampling device according to claim 1, characterized in that: It also includes an anti-skid base, which is arranged at the bottom of the bracket.

4. The automatic oil sampling device according to claim 1, characterized in that: The driving member is a handle, which is arranged at one end of the reel to drive the reel to rotate.

5. The automatic oil sampling device according to claim 1, characterized in that: Two lifting ears are provided on the top of the upper end cover, the lifting ears are symmetrically arranged with respect to the upper end cover, and the lifting rings are respectively connected to the two lifting ears.

6. The automatic oil sampling device according to claim 1, characterized in that: The pipeline includes an upper joint, a passage and a lower joint that are connected in sequence. The passage is located in the solenoid valve. The upper joint passes through the lower end cover and is connected to the sampling bottle. The side of the lower joint is connected to the ultrasonic ranging sensor.

7. The automatic oil sampling device according to claim 1, characterized in that: It also includes a display screen, which is electrically connected to the single chip computer and is used to display the depth of the sampler.

8. The automatic oil sampling device according to claim 1, characterized in that: The alarm is a buzzer and / or an indicator light, and both the buzzer and the indicator light are electrically connected to the single chip computer.

9. The automatic oil sampling device according to claim 1, characterized in that: A partition is provided in the sampling bottle to divide the interior of the sampling bottle into multiple sampling chambers. A sample delivery pipeline is provided on the partition and is connected to each sampling chamber respectively. Multiple control valves are provided on the sample delivery pipeline, and the control valves correspond to the sampling chambers one by one.

10. The automatic oil sampling device according to claim 1, characterized in that: The surface of the drum is provided with a diamond grid or a spiral pattern to increase the friction between the surface of the drum and the sling and the cable.

Images