Tank car sampling device

Abstract

The invention discloses a tank car sampling device, the sampling device is arranged on a sampling table, the sampling device comprises a sampling pipeline, a vacuum pump, an electromagnetic valve, a mass sensor, a position sensor, a sampling container and a control system, the sampling pipeline comprises a main sampling pipe and a correspondingly arranged purging gas pipe, and the purging gas pipe is connected with the main sampling pipe in a penetrating manner; the vacuum pump and the mass sensor are both arranged on the main sampling pipeline, the position sensor is arranged on the outer side of the main sampling pipe, the main sampling pipe comprises a plurality of sampling ports, the electromagnetic valves are respectively arranged adjacent to the corresponding sampling ports, the plurality of sampling ports are all provided with oil scraping devices, the control system comprises a control panel, a main control PCB and a microprocessor, and the main control PCB and the microprocessor are connected with the control panel. The vacuum pump, the electromagnetic valve, the mass sensor and the position sensor are electrically connected with the control system. The device is simple in structure, convenient to use, high in automation degree, efficient and accurate in sampling, energy-saving and environment-friendly, and the sampling cost and the labor intensity of workers are greatly reduced.

Description

Technical Field

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

[0002] During the transportation and storage of oil products, quality inspection of the oil in the tank truck is crucial, and accurate sampling is a key step to ensure the reliability of the test results.

[0003] Traditional manual sampling methods have many disadvantages. For example, the sampling position is difficult to control accurately, and it cannot fully reflect the quality of oil at different depths in the tank truck. The sampling process is cumbersome, labor-intensive, and inefficient. It is also difficult to effectively clean residual oil in the pipeline, which can easily cause oil waste and pollution, affecting the accuracy of subsequent sampling.

[0004] Therefore, it is urgent to need engineers and technicians in this field to develop an efficient, accurate and highly automated tank truck sampling device to solve these problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a tank truck sampling device which has a simple structure, is easy to use, has a high degree of automation, and can take samples efficiently and accurately, and is energy-saving and environmentally friendly.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A tank truck sampling device is arranged on a sampling platform and is characterized in that the sampling device includes: a sampling pipeline, a vacuum pump, a solenoid valve, a mass sensor, a position sensor, a sampling container and a control system. The sampling pipeline includes a main sampling tube and a correspondingly arranged purge air pipe, the purge air pipe is connected to the main sampling tube, the vacuum pump and the mass sensor are both arranged on the main sampling pipeline, the position sensor is arranged on the outside of the main sampling tube, the main sampling tube includes multiple sampling ports, the solenoid valves are respectively arranged adjacent to the corresponding sampling ports, and the multiple sampling ports are all provided with oil scraping devices. The control system includes a control panel and a main control PCB and a microprocessor connected to the control panel. The vacuum pump, solenoid valve, mass sensor, and position sensor are respectively electrically connected to the control system.

[0008] In the above structure, the main sampling tube is provided with a manual valve and an oil and gas filter, and the plurality of sampling ports are respectively arranged at the upper part, the middle part and the lower part of the main sampling tube.

[0009] In the above structure, there are multiple position sensors, and the multiple position sensors are respectively arranged on the outside of the corresponding sampling ports.

[0010] The above structure also includes a sampling box, which is provided with a limiting groove for placing multiple sample containers. Multiple sample containers are movably arranged in the limiting groove, and multiple sample containers are respectively connected to the corresponding sampling ports through the provided branch pipes.

[0011] The above structure further includes an operating device, which includes a lifting mechanism and a guiding mechanism. The sampling pipeline is movably connected to the operating device, and the operating device is electrically connected to the control system.

[0012] In the above structure, a plurality of casters are provided at the bottom of the sampling platform, the plurality of casters are symmetrically arranged, the plurality of casters are all provided with a brake mechanism, and the plurality of casters are movably connected to the sampling platform.

[0013] In the above structure, there are multiple solenoid valves, and the multiple solenoid valves are respectively arranged corresponding to the main sampling tube and the purge air pipe.

[0014] In the above structure, the sampling pipeline is a flexible tube structure with a smooth inner side surface, and the sampling pipeline is made of oil-resistant and corrosion-resistant materials.

[0015] In the above structure, the control panel includes a display screen and control buttons embedded in the control panel. There are multiple control buttons, and the multiple control buttons are movably connected to the main control PCB. The display screen is a touch screen, and an input area is provided on the display screen.

[0016] The beneficial effects of the present invention are:

[0017] The present invention installs sensors and quality sensors on the outside of the main sampling tube to accurately feedback the depth of the sampling tube inserted into the tank truck, monitor the quality or volume of the extracted oil in real time, set the sampling point volume through the control system, and select single-point sampling or mixed sampling mode according to demand to achieve scientific mixed sampling of oil products at different depths. The control system can receive and process signals from each sensor, thereby accurately controlling the operating status of the device. Solenoid valves are installed at key pipeline nodes to control the flow direction of oil products and purge gas. The present invention has a simple structure, is easy to use, has a high degree of automation, and can achieve efficient and accurate sampling. It is energy-saving and environmentally friendly, greatly reducing sampling costs and worker labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the tank truck sampling device of the present invention;

[0019] Figure 2 This is a structural principle diagram of the tank truck sampling device of the present invention.

[0020] In the figure, 1-main sampling tube, 2-vacuum pump, 3-solenoid valve, 4-mass sensor, 5-position sensor, 6-sampling container, 7-purge air pipe, 8-sampling port, 9-manual valve, 10-oil and gas filter, 11-sampling box, 12-tank car, 13-oil scraping device, 14-operating device, 15-sampling table. DETAILED DESCRIPTION

[0021] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1-2 As shown, a tank truck sampling device is arranged on a sampling platform 15. The sampling device includes: a sampling pipeline 1, a vacuum pump 2, a solenoid valve 3, a mass sensor 4, a position sensor 5, a sampling container 6 and a control system. The sampling pipeline includes a main sampling tube 1 and a corresponding purge air pipe 7. The purge air pipe 7 is connected to the main sampling tube 1. The vacuum pump 2 and the mass sensor 4 are both arranged on the main sampling tube 1. The position sensor is arranged on the outside of the main sampling tube. The main sampling tube includes multiple sampling ports 8. The solenoid valves 3 are respectively arranged adjacent to the corresponding sampling ports 8. The multiple sampling ports 8 are all provided with an oil scraper 13. The control system includes a control panel and a main control PCB and a microprocessor connected to the control panel. The vacuum pump 2, the solenoid valve 3, the mass sensor 4, and the position sensor 5 are respectively electrically connected to the control system.

[0023] Specifically, in this embodiment, the vacuum pump 2, serving as the core component for generating negative pressure, is connected to the sampling tube and provides power for transferring the oil from the tank truck to the sampling bottle. The control system integrates a microprocessor (intelligent control chip) that receives and processes signals from various sensors, thereby precisely controlling the operating status of the device. Solenoid valves 3 are located at key piping nodes in the device to control the flow of oil and purge gas. A quality sensor 4 is installed on the sampling pipeline to monitor the quality or volume of the extracted oil in real time.

[0024] Specifically, in this embodiment, the operator can set the volume of the sampling point through the control system, and select the single-point sampling or mixed sampling mode according to the needs. In the single-point sampling mode, the control system opens the upper, middle, and lower specific sampling ports 8 separately according to the settings, and accurately extracts the corresponding depth oil products into the sampling container; in the mixed sampling mode, the opening time or flow rate of different sampling ports 8 is controlled in sequence according to the preset ratio of 1:8:1, so as to achieve scientific mixed sampling of oil products of different depths. After the sampling is completed, the control system controls the solenoid valve to switch to the purge gas pipeline, introduces inert gas (such as nitrogen), and the gas forms a positive pressure in the pipeline, and blows the residual oil products in the pipeline back to the tank truck 12 or the collection container to ensure that the pipeline is clean. After completing all sampling and purging processes, just press the reset button on the control system, and the device automatically drives the sampling tube back to the initial position to prepare for the next sampling operation.

[0025] In a preferred embodiment of the present invention, a manual valve 9 and an oil / gas filter 10 are provided on the main sampling tube 1 , and a plurality of sampling ports 8 are respectively provided at the upper, middle and lower parts of the main sampling tube 1 .

[0026] Specifically, in this embodiment, the main sampling tube 1 is designed with multiple sampling ports 8 at the upper, middle, and lower locations, which can meet the requirements of sampling at different depths.

[0027] In a preferred embodiment of the present invention, there are multiple position sensors 5 , and the multiple position sensors 5 are respectively disposed on the outside of corresponding sampling ports 8 .

[0028] Specifically, in this embodiment, the position sensor 5 is installed on the outside of the main sampling tube 1 to accurately feedback the depth position of the sampling tube inserted into the tank truck 12.

[0029] In a preferred embodiment of the present invention, a sampling box 11 is further included. The sampling box 11 is provided with a limiting groove for placing multiple sample containers. Multiple sample containers 6 are movably arranged in the limiting groove, and the multiple sample containers 6 are respectively connected to the corresponding sampling ports 8 through the provided branch pipes.

[0030] Specifically, in this embodiment, each branch pipe is provided with a solenoid valve 3 .

[0031] In a preferred embodiment of the present invention, an operating device 14 is further included. The operating device 14 includes a lifting mechanism and a guiding mechanism. The sampling pipeline is movably connected to the operating device 14, and the operating device 14 is electrically connected to the control system.

[0032] Specifically, in this embodiment, the control system controls the operating device 14 to drive the sampling pipeline to move up and down and forward and backward, so that the corresponding sampling port 8 is accurately inserted into the sampling point in the tank car 12.

[0033] In a preferred embodiment of the present invention, a plurality of casters are provided at the bottom of the sampling platform 15, the plurality of casters are symmetrically arranged, the plurality of casters are provided with a brake mechanism, the plurality of casters are movably connected to the sampling platform 15, and there are a plurality of solenoid valves 3, and the plurality of solenoid valves 3 are respectively provided corresponding to the main sampling tube 1 and the purge air pipe.

[0034] In a preferred embodiment of the present invention, the sampling pipeline is a flexible pipe structure with a smooth inner surface, and the sampling pipeline is made of oil-resistant and corrosion-resistant materials.

[0035] In a preferred embodiment of the present invention, the control panel includes a display screen embedded in the control panel, and control buttons, there are multiple control buttons, and the multiple control buttons are movably connected to the main control PCB. The display screen is a touch screen, and an input area is provided on the display screen.

[0036] Specifically, in this embodiment, after the tank truck 12 docks, the operator pushes the sampling device next to the truck 12, connects the power cord, and starts the device. The vacuum pump 2 rapidly operates, generating negative pressure. The operator then holds the sampling tube and slowly inserts it into the tank on the truck 12. As the sampling tube penetrates deeper, the position sensor 5 monitors its depth in real time. When it reaches the bottom of the tank, the control system shuts down the device. Based on the purpose of the test, the operator sets the single-point sampling mode on the control system's touchscreen, selects the middle sampling port 8, and sets the sampling volume to 400 ml. The control system then instructs the relevant solenoid valve 3 to open, and the vacuum pump 2 adjusts its suction force to accurately extract the oil product from the middle of the tank truck 12 into the sampling bottle. The quality sensor 4 simultaneously monitors the sampling volume to ensure that the sample volume meets the required accuracy. After completing the single-point sampling, if a mixed sample is subsequently required for comprehensive quality assessment, the operator again switches the control system to mixed sampling mode, setting a mixing ratio of 1:8:1. The control system sequentially controls the opening of the upper, middle, and lower sampling ports in proportion, extracting oil products from different depths and mixing them until the predetermined mixed sample volume is reached. The residual oil is returned to the tank truck 12. Finally, the operator presses the reset button on the operation panel, and the sampling tube automatically returns to its initial position. The entire sampling process is completed efficiently and accurately. The samples are sent to the laboratory for quality testing, providing a reliable basis for oil quality control.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A tank truck sampling device, the sampling device is arranged on a sampling platform, characterized in that: The sampling device includes: a sampling pipeline, a vacuum pump, a solenoid valve, a mass sensor, a position sensor, a sampling container and a control system. The sampling pipeline includes a main sampling tube and a corresponding purge air pipe, and the purge air pipe is connected to the main sampling tube. The vacuum pump and the mass sensor are both arranged on the main sampling pipeline, and the position sensor is arranged on the outside of the main sampling tube. The main sampling tube includes multiple sampling ports, and the solenoid valves are respectively arranged adjacent to the corresponding sampling ports. The multiple sampling ports are all equipped with oil scraping devices. The control system includes a control panel and a main control PCB and a microprocessor connected to the control panel. The vacuum pump, solenoid valve, mass sensor, and position sensor are respectively electrically connected to the control system.

2. The tank truck sampling device according to claim 1, characterized in that: The main sampling tube is provided with a manual valve and an oil and gas filter, and the plurality of sampling ports are respectively arranged at the upper part, the middle part and the lower part of the main sampling tube.

3. The tank truck sampling device according to claim 2, characterized in that: There are multiple position sensors, and the multiple position sensors are respectively arranged on the outside of the corresponding sampling ports.

4. The tank truck sampling device according to claim 1, characterized in that: It also includes a sampling box, which is provided with a limiting groove for placing multiple sample containers. The multiple sample containers are movably arranged in the limiting groove, and the multiple sample containers are respectively connected to the corresponding sampling ports through the provided branch pipes.

5. The tank truck sampling device according to claim 1, characterized in that: It also includes an operating device, which includes a lifting mechanism and a guiding mechanism. The sampling pipeline is movably connected to the operating device, and the operating device is electrically connected to the control system.

6. The tank truck sampling device according to claim 1, characterized in that: A plurality of casters are provided at the bottom of the sampling platform, the plurality of casters are symmetrically arranged, the plurality of casters are all provided with a brake mechanism, and the plurality of casters are movably connected to the sampling platform.

7. The tank truck sampling device according to claim 1, characterized in that: There are multiple solenoid valves, and the multiple solenoid valves are respectively arranged corresponding to the main sampling pipe and the purge air pipe.

8. The tank truck sampling device according to claim 2, characterized in that: The sampling pipeline is a flexible pipe structure with a smooth inner side surface, and the sampling pipeline is made of oil-resistant and corrosion-resistant materials.

9. The tank truck sampling device according to claim 2, characterized in that: The control panel includes a display screen and control buttons embedded in the control panel. There are multiple control buttons, and the multiple control buttons are movably connected to the main control PCB. The display screen is a touch screen, and an input area is provided on the display screen.

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