Unmanned unloading control system

Abstract

The utility model discloses an unmanned unloading control system which comprises an input assembly, an output assembly and a control assembly, the input assembly comprises an input main pipe and a plurality of input branch pipes communicated with the input main pipe, the input branch pipes are connected with input control valves, and the input branch pipes are used for being connected with a tank body of a tank car; the output assembly comprises an output main pipe and a plurality of output branch pipes communicated with the output main pipe, the output branch pipes are used for being connected with the storage tank, and the output branch pipes are connected with output control valves; the power assembly comprises an unloading pump, and the input end and the output end of the unloading pump communicate with the input main pipe and the output main pipe correspondingly; and the processor is electrically connected with the input control valve, the output control valve and the unloading pump. According to the unmanned unloading control system, operation of the unloading pump, the input control valve and the output control valve is controlled through the processor, when the unmanned unloading control system is used, a driver only needs to connect the tank body of the tank car with the input branch pipe, then dangerous chemicals can be transferred, operation is convenient and fast, the working efficiency is improved, and meanwhile the manual dependency degree and the labor cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hazardous materials unloading technology, and in particular to an unmanned unloading control system. Background Technology

[0002] In hazardous chemical storage enterprises, after hazardous chemicals are generated, for safety reasons, it is usually necessary to use tank trucks to transport hazardous chemicals to designated locations, and then use unloading pumps to transfer the hazardous chemicals to outlet pipes, keeping them away from sensitive areas, reducing potential hazards to the surrounding environment, and facilitating on-site safety management.

[0003] At storage tank sites, fixed transfer pipelines are typically installed, equipped with various valves. During unloading operations, the tanker driver usually connects the transfer pipeline to the tanker, and on-site management personnel manually control the opening and closing of the valves before starting the unloading pump to transfer the chemicals from the tanker to the outlet pipe. This unloading control system is highly dependent on manual labor, leading to increased thermal costs, low operational efficiency, and significant safety hazards (easily caused by various operational errors such as leakage risks). It also presents problems such as equipment idling (potentially damaging the equipment due to cavitation).

[0004] Therefore, it is necessary to improve the existing chemical hazardous materials unloading systems. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects in the existing technology and provide an unmanned unloading control system that improves work efficiency, safety and reliability, and reduces labor costs.

[0006] To achieve the above-mentioned technical effects, the technical solution of this utility model is: an unmanned unloading control system, comprising:

[0007] The input component includes a main input pipe and several input branch pipes connected to the main input pipe, the input branch pipes being connected to an input control valve, and the input branch pipes being used to connect to the tank body of a tank truck;

[0008] The output component includes a main output pipe and several branch output pipes connected to the main output pipe. The branch output pipes are used to connect to the storage tank and are connected to an output control valve.

[0009] The power unit includes an unloading pump, the input end of which is connected to the input main pipe and the output main pipe, respectively;

[0010] The processor is electrically connected to the input control valve, the output control valve, and the unloading pump.

[0011] Preferably, in order to facilitate the storage of different types of hazardous chemicals, the output branch pipe corresponds one-to-one with the input branch pipe.

[0012] Preferably, in order to achieve rapid response, improve control accuracy, and reduce maintenance costs, both the input control valve and the output control valve are pneumatic valves.

[0013] Preferably, in order to ensure the safe operation of the unloading pump, the input branch pipe or the output branch pipe is connected to an anti-cavitation sensor, and the anti-cavitation sensor is electrically connected to the processor.

[0014] Preferably, in order to improve detection accuracy and achieve rapid response, the anti-cavitation sensor is a tuning fork type anti-cavitation sensor.

[0015] Preferably, in order to improve conveying efficiency, at least two unloading pumps are provided, with an input automatic isolation valve connected between the input ends of adjacent unloading pumps and an output automatic isolation valve connected between the output ends of adjacent unloading pumps, and the output automatic isolation valve is electrically connected to the processor.

[0016] Preferably, in order to improve conveying efficiency, reduce the number of parts, and lower costs, the unloading pump is provided with at least two, with adjacent input branch pipes connected to the input end of the unloading pump through the input control valve, and adjacent output branch pipes connected to the output end of the unloading pump through the output control valve.

[0017] Preferably, in order to control the connection and disconnection between each unloading pump, input branch pipe and output branch pipe, the input control valve and the output control valve both include a valve body, a valve block and a drive unit. The valve body has three valve ports communicating with its own internal cavity. The valve block has three flow channels communicating with each other. The outer surface of the valve block is sealed to the inner wall of the valve body. The drive unit drives the valve block to move between a full-through position, a half-through position and a fully closed position. In the full-through position, the three valve ports are connected to the three flow channels one by one. In the fully closed position, the three valve ports are disconnected from the three flow channels. In the half-through position, two of the valve ports are in flow with two of the flow channels, and the remaining valve port is disconnected from the remaining flow channel.

[0018] Preferably, in order to enable the valve blocks to move between different workstations, the three valve blocks are cylindrical. Among the three flow channels, two flow channels are coaxial and their coaxiality is perpendicular to the coaxiality of the remaining flow channel. The drive unit drives the valve blocks to rotate around their own coaxiality within the valve housing.

[0019] Preferably, in order to improve control accuracy, the drive unit includes a stepper motor, the output end of which is connected to the valve block via a transmission, and the stepper motor is electrically connected to the processor.

[0020] In summary, compared with existing technologies, the unmanned unloading control system of this utility model controls the operation of the unloading pump, input control valve and output control valve through a processor. When in use, the driver only needs to connect the tanker to the input branch pipe to carry out the transfer of hazardous chemicals. The operation is convenient and quick, improving work efficiency while reducing reliance on manual labor and labor costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of the second embodiment;

[0023] Figure 3 This is a structural schematic diagram of the third embodiment;

[0024] Figure 4 This is a schematic diagram of the input control valve and output control valve in the third embodiment;

[0025] Figure 5 yes Figure 4 An explosion diagram;

[0026] Figure 6 yes Figure 4 A schematic diagram of the cross-sectional structure;

[0027] Figure 7 This is a cross-sectional view of the input control valve and output control valve in the fully closed position of the third embodiment;

[0028] Figure 8 This is a cross-sectional view of the input control valve and output control valve in the half-open position of the third embodiment;

[0029] In the diagram: 1. Input main pipe; 2. Input branch pipe; 3. Output branch pipe; 4. Storage tank; 5. Unloading pump; 6. Anti-cavitation sensor; 7. Automatic isolation valve; 8. Valve body; 801. Valve port; 9. Valve block; 901. Flow channel; 10. Drive unit; 11. Output main pipe; 12. Input control valve; 13. Output control valve. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0031] First Embodiment

[0032] like Figure 1 As shown, the unmanned unloading control system of the first embodiment of this utility model includes:

[0033] The input component includes an input main pipe 1 and several input branch pipes 2 connected to the input main pipe 1. The input branch pipes 2 are connected to an input control valve 12 and are used to connect to the tank body of the tank truck.

[0034] The output component includes an output main pipe 11 and several output branch pipes 3 connected to the output main pipe 11. The output branch pipes 3 are used to connect to the storage tank 4 and are connected to the output control valve 13.

[0035] The power unit includes an unloading pump 5, the input end and the output end of which are connected to the input main pipe 1 and the output main pipe 11, respectively.

[0036] The processor (not shown in the figure) is electrically connected to the input control valve 12, the output control valve 13 and the unloading pump 5.

[0037] When using the system, the tanker driver only needs to connect the tanker to the input branch pipe 2, open the input control valve 12 corresponding to the input branch pipe 2 and the output control valve 13 corresponding to the output branch pipe 3, and start the unloading pump 5. The unloading pump 5 can then extract the hazardous chemicals from the tanker, allowing the chemicals to enter the storage tank 4 sequentially through the input branch pipe 2, the input main pipe 1, the unloading pump 5, the output main pipe 11, and the output branch pipe 3. Then, the controller closes the input control valve 12 and the output control valve 13, stopping the unloading pump 5, thus completing the entire unloading operation.

[0038] Compared with existing technologies, this unloading control system only requires the driver to complete the connection operation between the tanker and the input branch pipe 2. The controller can then control the operation of the input control valve 12, the output control valve 13, and the unloading pump 5, thereby controlling the entire unloading operation. There is no need to manually control the opening and closing of the valves and the operation of the unloading pump 5. It is easy to operate, improves work efficiency, and reduces reliance on manual labor, thereby reducing labor costs.

[0039] It should be noted that the processor in this embodiment is preferably a PLC, which employs a programmable memory to store instructions for performing logical operations, sequential control, timing, technical and arithmetic operations, and to control various types of machinery through digital or analog inputs and outputs. Therefore, the PLC can control the operation of each input control valve 12, output control valve 13, and unloading pump 5.

[0040] A further improvement is that the output branch pipe 3 corresponds one-to-one with the input branch pipe 2.

[0041] In this embodiment, there are two inlet branch pipes 2, two outlet branch pipes 3, and two storage tanks 4. This design facilitates the storage of two different hazardous chemicals and also provides various storage options for users to choose from. Specifically:

[0042] Option 1: The input control valve 12 connected to one of the input branch pipes 2 is opened, and the output control valve 13 connected to the corresponding output branch pipe 3 of the input branch pipe 2 is opened, starting the unloading pump 5, so that a hazardous chemical is transported to one of the storage tanks 4 through an input branch pipe 2, the unloading pump 5 and an output branch pipe 3.

[0043] Option 2: The input control valve 12 connected to the two input branch pipes 2 is opened, and the output control valve 13 connected to one of the output branch pipes 3 is opened, and the unloading pump 5 is started, so that the two identical hazardous chemicals are transported to one of the storage tanks 4 through the two input branch pipes 2, the unloading pump 5 and the one output branch pipe 3.

[0044] Option 3: The input control valve 12 connected to one of the input branch pipes 2 is opened, and the output control valve 13 connected to the two output branch pipes 3 is opened, so that the hazardous chemicals, after passing through one input branch pipe 2 and the unloading pump 5, are divided into two paths and transported from the two output branch pipes 3 to the two storage tanks 4.

[0045] A further improvement is that both the input control valve 12 and the output control valve 13 are pneumatic valves.

[0046] Pneumatic valves are powered by compressed air, which is abundant and readily available in nature. Air can be compressed and stored using an air compressor to power the valve. Furthermore, pneumatic valves do not generate electrical sparks during operation, making them particularly suitable for the storage and transportation of hazardous chemicals. In addition, the actuators of pneumatic valves have low inertia, enabling them to respond quickly to control signals and open and close the valves. The response time of pneumatic valves is typically between tens and hundreds of milliseconds, making them suitable for applications requiring rapid and accurate flow control. Moreover, compared to other types of control valves, pneumatic valves have the advantages of relatively simple structure and low maintenance costs.

[0047] A further improvement is that an anti-cavitation sensor 6 is connected to the input branch 2 or the output branch 3, and the anti-cavitation sensor 6 is electrically connected to the processor.

[0048] By setting up an anti-cavitation sensor 6, it is possible to detect whether there are chemical materials passing through the input branch pipe 2 or the output branch pipe 3. When no chemical flow is detected, the unloading pump 5 is shut off to prevent the unloading pump 5 from cavitating. In this way, damage to the unloading pump 5 is avoided and the safe operation of the unloading pump 5 is ensured.

[0049] A further improvement is that the anti-cavitation sensor 6 is a tuning fork type anti-cavitation sensor 6.

[0050] Compared to other types of detection sensors, the tuning fork anti-cavitation sensor 6 utilizes the vibration principle of a tuning fork to detect liquid level. When the tuning fork is submerged in liquid, its frequency changes. By accurately measuring this frequency change, it accurately determines whether the liquid level has reached a cavitation state. This measurement method is unaffected by the physical properties of the liquid, such as color, transparency, and viscosity, providing a high-precision liquid level measurement structure and effectively avoiding cavitation accidents caused by measurement errors. Furthermore, the tuning fork anti-cavitation sensor 6 has a relatively simple structure, without complex moving mechanical parts, making it less susceptible to wear and corrosion, thus exhibiting high reliability and stability. Moreover, the vibration frequency change of the tuning fork can quickly reflect changes in liquid level, resulting in a fast response speed. When the liquid level changes, the sensor can quickly detect and send a corresponding signal, taking timely measures to prevent cavitation. In addition, due to its simple structure and high reliability, the tuning fork anti-cavitation sensor 6 requires less maintenance. It does not require regular repair and replacement of complex mechanical parts, nor frequent calibration and adjustment, reducing maintenance costs and downtime, and improving production efficiency.

[0051] It should be noted that in this embodiment, the number of input branch pipe 2 and output branch pipe 3 can also be multiple.

[0052] Second Embodiment

[0053] like Figure 2 As shown, the unmanned unloading control system of the second embodiment of this utility model is based on the first embodiment, except that at least two unloading pumps 5 are provided, an input automatic isolation valve 7 is connected between the input ends of adjacent unloading pumps 5, an output automatic isolation valve 7 is connected between the output ends of adjacent unloading pumps 5, and the output automatic isolation valve 7 is electrically connected to the processor.

[0054] Specifically, in this embodiment, two unloading pumps 5 are provided.

[0055] With the above structure, compared to the first embodiment, when transporting chemicals from the tanker connected to one of the input branch pipes 2 to one of the storage tanks 4, the two unloading pumps 5 can be started simultaneously, and the automatic isolation valves 7 at the input ends of the two unloading pumps 5 open, so that the two unloading pumps 5 can work together to complete the chemical transport. Compared with a single unloading pump 5, the unloading efficiency is higher.

[0056] Furthermore, after the two automatic isolation valves 7 are disconnected from each other, the two unloading pumps 5 can be started simultaneously, and the two chemical materials can be transported to the two storage tanks 4 through the two input branch pipes 2 and the output branch pipes 3 respectively, further improving the unloading efficiency. The two chemicals can be transported at the same time.

[0057] Third Embodiment

[0058] like Figures 3-8 As shown, the unmanned unloading control system of the third embodiment of this utility model is based on the second embodiment, except that at least two unloading pumps 5 are provided. The adjacent input branch pipes 2 are connected to the input end of the unloading pump 5 through the input control valve 12, and the adjacent output branch pipes 3 are connected to the output of the unloading pump 5 through the output control valve 13.

[0059] Specifically, in this embodiment, four input branch pipes 2 and four output branch pipes 3 are provided, and three unloading pumps 5 are provided.

[0060] A further improvement is that both the input control valve 12 and the output control valve 13 include a valve housing 8, a valve block 9, and a drive unit 10. The valve housing 8 has three valve ports 801 communicating with its own internal cavity, and the valve block 9 has three interconnected flow channels 901. The outer surface of the valve block 9 is sealed to the inner wall of the valve housing 8. The drive unit 10 drives the valve block 9 to move between a full-open position, a half-open position, and a fully closed position. In the full-open position, the three valve ports 801 correspond one-to-one with the three flow channels 901. In the fully closed position, the three valve ports 801 are isolated from the three flow channels 901. In the semi-open position, two of the valve ports 801 are open to two of the flow channels 901, and the remaining valve port 801 is isolated from the remaining flow channel 901. The three valve blocks 9 are cylindrical. Among the three flow channels 901, two of the flow channels 901 are coaxial and their axes are perpendicular to the axis of the remaining flow channel 901. The drive unit 10 drives the valve block 9 to rotate around its own axis inside the valve housing 8.

[0061] The input control valve 12 is mounted on the input main pipe 1, and the output control valve 13 is mounted on the output main pipe 11. The drive unit 10 includes a stepper motor, the output end of which is connected to the valve block 9. The stepper motor is electrically connected to the processor. The step angle of the stepper motor is 45°, which enables the stepper motor to drive the valve block 9 to rotate 45° each time.

[0062] When valve block 9 rotates to the position... Figure 6 In the fully open position shown, the three valve ports 801 of the valve housing 8 are connected one-to-one with the three flow channels 901 of the valve block 9. At this time, the input end of the unloading pump 5 is connected to its two adjacent input branch pipes 2, or the output end of the unloading pump 5 is connected to its two adjacent output branch pipes 3. Conversely, when the valve block 9 rotates to the position shown, the unloading pump 5 is connected to its two adjacent output branch pipes 3. Figure 7 In the fully closed position shown, the three valve ports 801 are isolated from the three flow channels 901. At this time, the input end of the unloading pump 5 is isolated from its two adjacent input branch pipes 2, or the output end of the unloading pump 5 is isolated from its two adjacent output branch pipes 3.

[0063] When valve block 9 rotates to the position... Figure 8When the unloading pump 5 is in the semi-open position as shown, two of the three components of the unloading pump 5 input end and the two input branch pipes 2 are kept connected and the other is kept disconnected; or two of the three components of the unloading pump 5 output end and the two output branch pipes 3 are kept connected and the other is kept disconnected.

[0064] Based on the above working principle, the position of valve block 9 can be flexibly adjusted by the drive unit 10 of input control valve 12 and output control valve 13, thereby controlling the working position of valve block 9 and changing the connection state of unloading pump 5, input branch pipe 2 and output branch pipe 3. This allows unloading pump 5 to select specific input branch pipe 2 and output branch pipe 3 to transport materials from specific tank truck bodies to storage tank 4, thereby meeting a variety of different usage requirements.

[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An unmanned unloading control system, characterized by, The utility model relates to a kind of tank car unloading system, including: Input component, including input main pipe and several input branch pipes communicated with the input main pipe, the input branch pipe is connected with input control valve, the input branch pipe is used to connect the tank body of tank car; Output component, including output main pipe and several output branch pipes communicated with the output main pipe, the output branch pipe is used to connect storage tank, the output branch pipe is connected with output control valve; Power component, including unloading pump, the input end and output end of the unloading pump are communicated with the input main pipe and the output main pipe respectively; Processor, electrically connected with the input control valve, the output control valve and the unloading pump.

2. The unmanned unloading control system according to claim 1, characterized in that: The output branch pipe corresponds to the input branch pipe.

3. The unmanned unloading control system according to claim 1, characterized in that: The input control valve and the output control valve are pneumatic valves.

4. The unmanned unloading control system according to claim 1, characterized in that: The input branch pipe or the output branch pipe is connected with anti-evacuation sensor, and the anti-evacuation sensor is electrically connected with the processor.

5. The unattended unloading control system of claim 4, wherein: The anti-evacuation sensor is a tuning fork type anti-evacuation sensor.

6. The unmanned unloading control system according to any one of claims 1-5, characterized in that: The unloading pump is provided with at least two, and the input end of adjacent unloading pump is connected with input automatic isolation valve, and the output end of adjacent unloading pump is connected with output automatic isolation valve, and the output automatic isolation valve is electrically connected with the processor.

7. The unmanned unloading control system according to any one of claims 1-5, characterized in that: The unloading pump is provided with at least two, and adjacent input branch pipe is connected with the input end of the unloading pump through the input control valve, and adjacent output branch pipe is connected with the output end of the unloading pump through the output control valve.

8. The unmanned unloading control system according to claim 7, characterized in that: The input control valve and the output control valve include valve shell, valve block and drive unit, the valve shell has three valve ports communicated with its own inner cavity, the valve block has three flow channels communicated with each other, the outer surface of the valve block is sealingly connected with the inner wall of the valve shell, and the drive unit drives the valve block to be active in full-passing position, half-passing position and full-closed position. In full-passing position, three valve ports are communicated one by one with three flow channels, in full-closed position, three valve ports are cut off with three flow channels, and in half-passing position, two valve ports and two flow channels are communicated, and the remaining one valve port and the remaining one flow channel are cut off.

9. The unmanned unloading control system according to claim 8, characterized in that: Three valve blocks are cylindrical, and in three flow channels, two flow channels are coaxial with the axis and perpendicular to the axis of the remaining one flow channel, and the drive unit drives the valve block to rotate in the valve shell around its axis.

10. The unmanned unloading control system according to claim 9, characterized in that: The drive unit includes a stepper motor, the output end of the stepper motor is drivingly connected with the valve block, and the stepper motor is electrically connected with the processor.

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