Liquid filling system

Abstract

The utility model relates to the technical field of liquid filling, in particular to a liquid filling system. The crane pipe visual recognition device collects a tank opening image of a tank car, the control module controls the displacement assembly to move according to the tank opening position in the tank opening image, the displacement assembly drives the other end of the filling pipe to move when moving, and a lower outlet of the telescopic sleeve in butt joint with the filling pipe is aligned with the tank opening position. A first electric push rod is arranged on the telescopic sleeve to drive the telescopic sleeve to stretch out and draw back, when the telescopic sleeve stretches downwards and gradually gets close to the tank opening, the proximity switch detects the distance between the lower end of the telescopic sleeve and the tank opening, when the lower opening of the telescopic sleeve gets close to the tank opening, the proximity switch sends a signal to the controller, and the controller controls the first electric push rod to stop; the telescopic sleeve cannot be inserted into the tank car, the probability that the telescopic sleeve is corroded is reduced, at the moment, a probe rod at the lower end of the liquid level sensor is inserted into the tank car, the liquid level height can be detected during filling, filling is stopped in time, and liquid overflow is avoided.

Description

Technical Field

[0001] This application relates to the technical field of liquid filling, and in particular to a liquid filling system. Background Art

[0002] Liquid materials are widespread in the petrochemical industry. Generally, a large amount of materials are stored in storage tanks and transported and controlled through pipelines, pressure pumps, valves, etc. When liquid materials are sold externally or sent to other places, they need to be filled into special tanks (such as cars, trains, or ships) for safe transportation. How to do a good job in the filling work, the filling equipment and technology are worthy of in-depth research. The filling process generally includes: docking, connection, pressure transmission, metering and weighing, shut-off, disconnection, etc. Traditional old equipment requires operators to board the liquid tank truck and insert the loading arm into the liquid tank truck through the filling port. The ground operator opens the operation valve for filling; then for the filling of dangerous liquids, such as corrosive liquids like strong acids and alkalis, during the filling process, manual control of the insertion and extraction of the pipe is required, the loading volume control is inaccurate, the work efficiency is low, and when the liquid overflows during overfilling, it causes great harm to the human body. Summary of the Utility Model

[0003] The utility model aims to solve the problems that manual operation of dangerous liquid filling is prone to accidents and the filling efficiency is relatively low, and thus provides an automatically controlled filling system.

[0004] The technical solution adopted by the utility model to solve the above problems is:

[0005] A liquid filling system, comprising a liquid container, a filling pipe, a loading arm vision recognition module, a control module, a displacement assembly, and a telescopic sleeve. One end of the filling pipe is communicated with the liquid container, a liquid pump is arranged on the filling pipe, the liquid pump is connected with the control module, and the other end of the filling pipe is connected with the telescopic sleeve; the loading arm vision recognition module and the displacement assembly are connected with the control module, the loading arm vision recognition module and the displacement assembly are arranged above the filling position of the tank truck, the loading arm vision recognition module is used to obtain the image of the tank opening of the tank truck, the control module is used to generate a displacement signal according to the tank opening image, and the displacement assembly is used to drive the other end of the filling pipe to move horizontally according to the displacement signal so that the lower outlet of the telescopic sleeve corresponds to the position of the tank opening, and the liquid in the liquid container flows into the tank truck through the filling pipe, the telescopic sleeve, and the tank opening; a first electric push rod is arranged on the telescopic sleeve, and the telescopic sleeve is driven to expand and contract by the first electric push rod. A proximity switch and a liquid level sensor are arranged at the lower part of the telescopic sleeve. When the telescopic sleeve extends in place, the liquid level sensor passes through the tank opening and inserts into the tank truck.

[0006] The utility model adopting the above technical solution, compared with the prior art, has the following beneficial effects:

[0007] The filling system of the present utility model is fully automatically controlled, which can effectively avoid accidents that may be caused by manual operation. When in use, the tanker driver needs to drive the tanker to the tanker filling position. The visual recognition device of the loading arm collects the image of the tanker's tank mouth. The control module controls the movement of the displacement assembly through the position of the tank mouth in the tank mouth image. When the displacement assembly moves, it drives the other end of the filling pipe to move, so that the lower outlet of the telescopic sleeve connected to the filling pipe is aligned with the tank mouth position. A first electric push rod is arranged on the telescopic sleeve to drive the telescopic sleeve to expand and contract. When the telescopic sleeve extends downward, it gradually approaches the tank mouth. The distance between the lower end of the telescopic sleeve and the tank mouth is detected by a proximity switch. When the lower opening of the telescopic sleeve approaches the tank mouth, the proximity switch sends a signal to the controller, and the controller controls the first electric push rod to stop, so that the telescopic sleeve will not be inserted into the tanker, reducing the probability of the telescopic sleeve being corroded. At this time, the lower probe of the liquid level sensor has been inserted into the tanker, and the liquid level height can be detected during filling, so as to stop filling in time and avoid liquid overflow.

[0008] As a preference, a further technical solution of the present utility model is:

[0009] A fixing frame is arranged at the tanker filling position, and the displacement assembly is movably arranged on the fixing frame. A fixing block is fixed on the displacement assembly, and the fixing block is connected to the end of the filling pipe far from the liquid container. The fixing frame provides a moving support for the displacement assembly, so that the displacement assembly can be located above the tanker filling position, facilitating the alignment of the telescopic sleeve with the tank mouth.

[0010] The displacement assembly includes a second electric push rod and a third electric push rod. A horizontal sliding groove and a vertical sliding groove are arranged on the fixing frame. The second electric push rod and the third electric push rod are respectively slidably connected to the horizontal sliding groove and the vertical sliding groove. The piston rods of the second electric push rod and the third electric push rod are both connected to the fixing block. The second electric push rod and the third electric push rod drive the fixing block to move horizontally and vertically, facilitating the alignment of the telescopic sleeve with the tank mouth by the fixing block. When the second electric push rod operates, the third electric push rod is driven to move in the vertical sliding groove; when the third electric push rod operates, the second electric push rod is driven to move in the horizontal sliding groove. Through this structure, the fixing block can move horizontally freely.

[0011] The filling pipe includes a steel structure pipe and a metal hose. The steel structure pipe and the metal hose are connected by a flange. The other end of the steel structure pipe is communicated with the liquid container, and the other end of the metal hose is connected to the fixing block. The metal hose is provided to facilitate the movement of the filling pipe driven by the displacement assembly.

[0012] The telescopic sleeve includes a fixed sleeve and a telescopic tube. The fixed sleeve is hermetically butted with the metal hose, and the telescopic tube is movably arranged in the fixed sleeve. The first electric push rod is fixed on the fixed sleeve, the telescopic direction of the first electric push rod is parallel to the axial direction of the fixed sleeve, and the front end of the piston rod of the first electric push rod is fixed to the lower part of the telescopic tube. The telescopic tube is driven to expand and contract in the fixed sleeve by the first electric push rod.

[0013] The control module includes a controller, two flow meters and a regulating valve. The two flow meters and the regulating valve are arranged on the steel structure pipe. The controller is connected to the two flow meters and the regulating valve. When the total amount of the filling liquid detected by any one of the flow meters is greater than the set value, a shutdown signal is sent to the controller. By setting two flow meters, the system has double insurance. When one flow meter fails, the other flow meter can detect the total amount of the filling liquid in time. The pipeline flow rate in different filling stages of the system can be controlled through the regulating valve. On the premise of ensuring the filling accuracy, the water hammer pressure is effectively reduced, the damage to the flow meter and valve equipment is avoided, and the service life of the equipment is prolonged. Description of the Drawings

[0014] Figure 1 is the three-dimensional structure diagram of the embodiment of the present application;

[0015] Figure 2 is another three-dimensional structure diagram of the embodiment of the present application;

[0016] Figure 3 is Figure 2 the partial enlarged view of A in

[0017] Figure 4 is the partial structure schematic diagram of the telescopic sleeve of the embodiment of the present application.

[0018] In the figure: 1. Liquid container; 2. Steel structure pipe; 3. Flow meter; 4. Regulating valve; 5. Cut-off valve; 6. Metal hose; 7. Fixed frame; 71. Horizontal sliding groove; 72. Vertical sliding groove; 73. Second electric push rod; 74. Fixed block; 75. Third electric push rod; 76. Slide block; 77. Suspension ring; 8. Telescopic sleeve; 9. First electric push rod; 10. Tank opening; 11. Tank truck; 12. Elbow joint; 13. Proximity switch; 14. Liquid level sensor. Detailed Embodiments

[0019] The following further illustrates the present utility model with reference to the embodiments. The purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0020] Refer to Figures 1-4, an embodiment of the present application discloses a liquid filling system, including a liquid container 1, a filling pipe, a crane pipe vision recognition module, a control module, a displacement assembly, and a telescopic sleeve 8. One end of the filling pipe is connected to the liquid container 1, a liquid pump is arranged on the filling pipe, and the liquid pump is connected to the control module. The other end of the filling pipe is connected to the telescopic sleeve 8. The crane pipe vision recognition module and the displacement assembly are connected to the control module. The crane pipe vision recognition module and the displacement assembly are arranged above the filling position of the tank truck 11. The crane pipe vision recognition module is used to obtain an image of the tank opening 10 of the tank truck 11. The control module is used to generate a displacement signal according to the image of the tank opening 10. The displacement assembly is used to drive the other end of the filling pipe to move horizontally according to the displacement signal, so that the lower outlet of the telescopic sleeve 8 corresponds to the position of the tank opening 10. The liquid in the liquid container 1 flows into the tank truck 11 through the filling pipe, the telescopic sleeve 8, and the tank opening 10. A first electric push rod 9 is arranged on the telescopic sleeve 8 to drive the telescopic sleeve 8 to expand and contract. A proximity switch 13 and a liquid level sensor 14 are arranged at the lower part of the telescopic sleeve 8. When the telescopic sleeve 8 extends in place, the liquid level sensor 14 passes through the tank opening 10 and inserts into the tank truck 11.

[0021] In this embodiment, the filling pipe includes a steel structure pipe 2 and a metal hose 6. The steel structure pipe 2 and the metal hose 6 are connected by a flange. The other end of the steel structure pipe 2 is connected to the lower part of the liquid container 1. The other end of the metal hose 6 is connected to a fixed block 74. Specifically, the metal hose 6 and the telescopic pipe are connected by an elbow joint 12, and the fixed block 74 is connected to the elbow joint 12.

[0022] In this embodiment, a fixed frame 7 is provided at the filling position of the tanker 11, and the displacement assembly is movably arranged on the fixed frame 7. Specifically, the displacement assembly includes a second electric push rod 73 and a third electric push rod 75. The fixed frame 7 includes a top plate and support legs at the four corners. A transverse strip and a longitudinal strip are fixed to the bottom end of the top plate. The transverse strip and the longitudinal strip are at a right angle. Transverse sliding grooves 71 and longitudinal sliding grooves 72 are respectively formed along the long directions of the transverse strip and the longitudinal strip. Sliders 76 are slidably arranged in both the transverse sliding groove 71 and the longitudinal sliding groove 72. The second electric push rod 73 is slidably connected to the transverse sliding groove 71 through the slider 76, and the third electric push rod 75 is slidably connected to the longitudinal sliding groove 72. A fixed block 74 is arranged below the top plate of the fixed frame 7. The front ends of the piston rods of the second electric push rod 73 and the third electric push rod 75 are respectively fixed to two adjacent side walls of the fixed block 74. A hanging ring 77 is fixed to the bottom surface of the fixed block 74. The hanging ring 77 is sleeved on the elbow joint 12 where the metal hose 6 is connected to the telescopic sleeve 8. Preferably, the hanging ring 77 can be a clamp or other components with adjustable ring diameters, which is convenient for fastening the elbow joint 12 and makes the fixation more firm. The fixed frame 7 provides a moving support for the displacement assembly, enabling the displacement assembly to be located above the filling position of the tanker 11, facilitating the alignment of the telescopic sleeve 8 with the tank opening 10; the second electric push rod 73 and the third electric push rod 75 drive the fixed block 74 to move horizontally and longitudinally, facilitating the fixed block 74 to drive the telescopic sleeve 8 to align with the tank opening 10. When the second electric push rod 73 operates, the third electric push rod 75 is driven to move in the longitudinal sliding groove 72; when the third electric push rod 75 operates, the second electric push rod 73 is driven to move in the transverse sliding groove 71. With this structure, the fixed block 74 can move horizontally freely.

[0023] In this embodiment, the telescopic sleeve 8 includes a fixed sleeve and a telescopic tube. The fixed sleeve and the metal hose 6 are hermetically butt-jointed through a pipe joint. The telescopic tube is movably arranged in the fixed sleeve; the first electric push rod 9 is fixed to the side wall of the fixed sleeve, and the front end of the piston rod of the first electric push rod 9 is fixed to the lower side wall of the telescopic tube. The telescopic direction of the first electric push rod 9 is parallel to the axial directions of the fixed sleeve and the telescopic tube; the liquid level sensor 14 and the proximity switch 13 are both fixed to the lower side wall of the telescopic tube. The front detection surface of the proximity switch 13 is flush with the front end surface of the telescopic tube. The detection box part of the liquid level sensor 14 is fixed to the lower side wall of the telescopic tube, and the probe part of the liquid level sensor 14 extends downward. The first electric push rod drives the telescopic tube to expand and contract in the fixed sleeve.

[0024] In this embodiment, the control module includes a controller, two flow meters 3, a regulating valve 4 and a cut-off valve 5. The controller is connected to the DCS system of the plant area for convenient joint control. The two flow meters 3 are electromagnetic flow meters. The cut-off valve 5, the regulating valve 4 and the two flow meters 3 are arranged on the steel structure pipe 2 in sequence from front to back. The controller is connected to the cut-off valve 5, the regulating valve 4 and the two flow meters 3. When the total amount of the filling liquid detected by any one of the flow meters 3 is greater than the set filling amount, a cut-off signal is sent to the controller, and the controller controls the cut-off valve 5 to cut off the steel structure pipe 2. By setting two flow meters 3, the system has double insurance. When one of the flow meters 3 fails, the other flow meter 3 can detect the total amount of the filling liquid in time. The pipeline flow rate in different filling stages of the system can be controlled by the regulating valve 4. On the premise of ensuring the filling accuracy, the water hammer pressure is effectively reduced, the damage to the flow meter 3 and valve equipment is avoided, and the service life of the equipment is extended.

[0025] In this embodiment, the crane pipe visual recognition module includes an RGBD camera. The RGBD camera is arranged at the connection position of the elbow joint 12 and the fixed sleeve. The lens of the RGBD camera faces downward and is used to collect the image of the tank mouth 10 and send it to the controller.

[0026] As an option, multiple filling positions for the tank trucks 11 are set in the production area. A card reader is arranged beside each filling position for the tank trucks 11. The driver of the tank truck 11 drives the tank truck 11 to any filling position for the tank trucks 11, and swipes the IC card carrying information such as the capacity and type of the tank truck 11 on the card reader. The card reader identifies the content of the IC card and sends it to the controller, and the controller sets the filling amount according to the capacity of the tank truck 11.

[0027] The control method and working principle of this embodiment are as follows:

[0028] When the tanker 11 drives to the filling position of the tanker 11, the controller obtains information such as the capacity and type of the tanker 11 through the card reader, sets the filling volume according to the capacity of the tanker 11, and then the RGBD camera starts to obtain the image of the tank opening 10 and sends the image of the tank opening 10 to the controller. The controller determines the coordinate area of the filling port according to the image of the tank opening 10, and controls the piston rod of the second electric push rod 73 or the third electric push rod 75 to extend, driving the elbow joint 12 to move and then driving the telescopic sleeve 8 to move, so that the lower opening of the telescopic sleeve 8 corresponds to the position of the tank opening 10; then controls the first electric push rod 9 to extend, driving the telescopic pipe to extend downward. During the downward movement, the proximity switch 13 gradually approaches the tank opening 10 and detects the distance signal. After the controller receives the distance signal, it controls the piston rod of the first electric push rod 9 to stop extending. At this time, the probe of the liquid level sensor 14 passes through the tank opening 10 and inserts into the tanker 11; then the controller controls the cut-off valve 5 to open and controls the opening degree of the regulating valve 4 to be 30%, and starts small-flow filling. Five seconds later, the controller controls the opening degree of the regulating valve 4 to be 100% and starts normal-flow filling. The two flow meters 3 start to detect simultaneously and send flow signals to the controller. The controller sends the flow data to the DCS system for monitoring; when 3 / 4 of the set filling volume is reached, the controller controls the opening degree of the regulating valve 4 to be 30% and conducts small-flow filling again; when the liquid flow detected by any one of the flow meters 3 reaches 99% of the set filling volume, or when the liquid level sensor 14 detects that the liquid level in the tanker 11 reaches the set warning value, a signal is sent to the controller. The controller controls the cut-off valve 5 to shut off the filling pipe. At this time, the remaining liquid in the cut-off valve 5 to the telescopic sleeve 8 flows into the tanker 11 under the action of inertia, making the filling volume of the tanker 11 close to 100% and avoiding liquid overflow; then the controller controls the piston rod of the first electric push rod 9 to retract to complete the filling.

[0029] The filling system of this embodiment is fully automatic controlled, which can effectively avoid accidents that may be caused by manual operation. When in use, the driver of the tanker 11 drives the tanker 11 to the filling position of the tanker 11. The image of the tank opening 10 of the tanker 11 is collected by the visual recognition device of the loading arm. The control module controls the movement of the displacement component according to the position of the tank opening 10 in the image of the tank opening 10. When the displacement component moves, the other end of the filling pipe is driven to move, so that the lower outlet of the telescopic sleeve 8 docked with the filling pipe is aligned with the position of the tank opening 10, so as to automatically determine the position of the tank opening 10. A first electric push rod 9 is arranged on the telescopic sleeve 8 to drive the telescopic sleeve 8 to expand and contract. When the telescopic sleeve 8 extends downward, it gradually approaches the tank opening 10. The distance between the lower end of the telescopic sleeve 8 and the tank opening 10 is detected by the proximity switch 13. When the lower opening of the telescopic sleeve 8 approaches the tank opening 10, the proximity switch 13 sends a signal to the controller, and the first electric push rod is controlled by the controller to stop, so that the telescopic sleeve 8 will not be inserted into the tanker 11, reducing the probability of the telescopic sleeve 8 being corroded. At the same time, it can also avoid the distance between the telescopic sleeve 8 and the tank opening 10 being too far, and liquid splashing and overflowing during filling. The lower probe of the liquid level sensor 14 is inserted into the tanker 11 under the drive of the telescopic sleeve 8, and the liquid level height in the tanker 11 can be detected during filling, so as to stop filling in time and avoid liquid overflow.

[0030] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention accordingly. Any equivalent changes made by using the content of the description and drawings of the present invention are included in the scope of rights of the present invention.

Claims

1. A liquid filling system, characterized in that: It includes a liquid container (1), a filling pipe, a visual recognition module for the loading arm, a control module, a displacement assembly, and a telescopic sleeve (8). One end of the filling pipe is connected to the liquid container (1), and a liquid pump (15) is provided on the filling pipe. The liquid pump (15) is connected to the control module. The other end of the filling pipe is connected to the telescopic sleeve (8). The visual recognition module for the loading arm and the displacement assembly are connected to the control module. The visual recognition module for the loading arm and the displacement assembly are arranged above the filling position of the tank truck (11). The visual recognition module for the loading arm is used to obtain an image of the tank opening (10) of the tank truck (11). The control module is used to generate a displacement signal based on the image of the tank opening (10). The displacement assembly is used to drive the other end of the filling pipe to move horizontally according to the displacement signal, so that the lower outlet of the telescopic sleeve (8) corresponds to the position of the tank opening (10). A first electric push rod (9) is provided on the telescopic sleeve (8). The telescopic sleeve (8) is driven to expand and contract by the first electric push rod (9). A proximity switch (13) and a liquid level sensor (14) are arranged at the lower part of the telescopic sleeve (8). When the telescopic sleeve (8) extends in place, the liquid level sensor (14) passes through the tank opening (10) and inserts into the tank truck (11).

2. The liquid filling system according to claim 1, wherein: A fixed frame (7) is arranged at the filling position of the tank truck (11). The displacement assembly is movably arranged on the fixed frame (7). A fixed block (74) is fixed on the displacement assembly. The fixed block (74) is connected to the end of the filling pipe far from the liquid container (1).

3. The liquid filling system according to claim 1, wherein: The displacement assembly includes a second electric push rod (73) and a third electric push rod (75). A transverse sliding groove (71) and a longitudinal sliding groove (72) are arranged on the fixed frame (7). The second electric push rod (73) and the third electric push rod (75) are respectively slidably connected to the transverse sliding groove (71) and the longitudinal sliding groove (72). The piston rods of the second electric push rod (73) and the third electric push rod (75) are both connected to the fixed block (74).

4. The liquid filling system according to claim 3, wherein: The filling pipe includes a steel structure pipe (2) and a metal hose (6). The steel structure pipe (2) and the metal hose (6) are connected by a flange. The other end of the steel structure pipe (2) is connected to the liquid container (1). The other end of the metal hose (6) is connected to the fixed block (74).

5. The liquid filling system according to claim 1, wherein: The telescopic sleeve (8) includes a fixed sleeve and a telescopic pipe. The fixed sleeve is hermetically butted with the metal hose (6). The telescopic pipe is movably arranged in the fixed sleeve. The first electric push rod (9) is fixed on the fixed sleeve. The telescopic direction of the first electric push rod (9) is parallel to the axial direction of the fixed sleeve. The front end of the piston rod of the first electric push rod (9) is fixed to the lower part of the telescopic pipe.

6. The liquid filling system according to claim 4, wherein: The control module includes a controller, two flow meters (3), and a regulating valve (4). The two flow meters (3) and the regulating valve (4) are arranged on the steel structure pipe (2). The controller is connected to the two flow meters (3) and the regulating valve (4). When the total amount of the filling liquid detected by any one of the flow meters (3) is greater than the set value, a shutdown signal is sent to the controller.

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