Anti-misoperation type quantitative loading sled

Abstract

The utility model belongs to the petroleum chemical storage and transportation equipment technical field, concretely relates to a kind of anti-misoperation type quantitative loading sled. Including parallelly arranged in the liquid phase pipeline and gas phase pipeline of sled frame base surface, liquid phase pipeline is in turn connected liquid phase ball valve, Y type filter, mass flowmeter and pneumatic regulating valve, and the accurate flow regulation is realized by closed loop control;Gas phase pipeline is equipped with flame arrestor and check valve, prevent gas backflow and flame back, control unit integrates anti-overflow anti-static controller and quantitative loading control instrument, through double-channel liquid level monitoring, pressure transmitter and electrostatic interlocking mechanism, valve quick cut-off function is triggered in real time, device uses modular flange connection and bypass emergency branch design, support fast maintenance and emergency operation.The utility model replaces manual intervention by automation process, solves the problem of large operation error, safety response lag and low maintenance efficiency in traditional loading, significantly improves the safety, precision and reliability of hazardous chemical loading.

Description

Technical Field

[0001] This utility model belongs to the field of petrochemical storage and transportation equipment technology, specifically relating to a quantitative loading skid designed to prevent misoperation. Background Technology

[0002] Traditional gasoline loading processes rely on manual operation, posing significant safety hazards and efficiency bottlenecks. In existing technologies, operators must manually control more than ten valves in the liquid and gas phase pipelines. The operating sequence is prone to errors and leaks, easily leading to oil / gas leaks or gas backflow accidents. Liquid phase pipeline flow regulation depends on manual experience in operating pneumatic valves, resulting in large flow fluctuations and a lack of closed-loop control, causing loading errors. Furthermore, safety monitoring methods are outdated; static grounding status requires manual segmented inspection, leading to a high rate of missed detections. In the event of sudden overpressure or overflow, the manual response time is too long, making it impossible to shut off the pipeline in time. Maintenance is also inefficient; filter blockage requires manual flange disassembly and cleaning, which is time-consuming.

[0003] Chinese Patent No. CN222631066U discloses a multifunctional quantitative loading skid, including a base, a skid-mounting device, and casters. The skid-mounting device is located at the top of the base, and the casters are located at the bottom of the base. The base has a threaded groove inside, and a fixing screw is located inside the threaded groove. The fixing screw has an arc-shaped groove inside, and an air suction positioning mechanism for air intake is located inside the arc-shaped groove. A positioning suction cup is installed at the bottom of the fixing screw, and an exhaust groove is located inside the positioning suction cup. Movable grooves are located on both sides of the base, and a collision protection mechanism is located inside the movable groove. This device can generate a large suction force between the positioning suction cup and the ground, which facilitates the initial fixation of the base and the positioning point. When displacement is required and positioning is not required, the air release valve at the top of the positioning suction cup can be pulled, allowing a large amount of air to rush into the positioning suction cup from the air release valve, so that the suction force disappears and the displacement is facilitated. The aforementioned devices rely on manual operation of valves for opening and closing, and do not incorporate closed-loop control of pneumatic regulating valves and mass flow meters, thus failing to eliminate flow regulation errors. They also lack liquid level, pressure, and electrostatic interlock monitoring mechanisms, making it impossible to achieve automatic shut-off within 0.3 seconds in abnormal conditions. Furthermore, they are not equipped with bypass emergency branches and quick-release filters, requiring machine shutdown and disassembly for maintenance, which cannot meet the stringent requirements for precise control, real-time safety response, and rapid maintenance in hazardous chemical loading scenarios. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned prior art and reduce the operational error of the anti-misoperation quantitative loading skid.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A misoperation-prevention quantitative loading skid includes:

[0007] Liquid and gaseous pipelines are arranged in parallel on the surface of the skid base;

[0008] The liquid phase pipeline is connected in series with liquid phase ball valve one, Y-type filter, mass flow meter, pneumatic regulating valve and liquid phase ball valve two.

[0009] The gas phase pipeline is connected in series with gas phase ball valve 1, flame arrester, gas phase check valve and gas phase ball valve 2.

[0010] The liquid phase loading arm is connected to the outlet end of the liquid phase pipeline, and the gas phase loading arm is connected to the outlet end of the gas phase pipeline.

[0011] The quantitative loading controller and the anti-overflow and anti-static controller are fixed to the surface of the skid base and electrically connected to the liquid phase pipeline and the gas phase pipeline.

[0012] By adopting the above technical solutions, an integrated flow path structure is formed through the parallel arrangement of liquid phase pipelines and gas phase pipelines and the fixing of pipeline supports, ensuring equipment stability. The Y-type filter, mass flow meter and pneumatic regulating valve connected in series in the liquid phase pipeline work together to achieve impurity filtration, accurate flow measurement and closed-loop regulation, eliminating human operation errors. The combination design of flame arrester and check valve in the gas phase pipeline prevents gas backflow and flame backflow. The electrical linkage between the quantitative loading controller and the anti-overflow and anti-static controller triggers interlock protection through real-time monitoring of liquid level, pressure and grounding status, and quickly shuts off the valves. The bypass branch and flange connection structure provide emergency pressure relief channels and rapid maintenance capabilities, reducing downtime and achieving overall standardized operation, reduced safety risks and improved maintenance efficiency.

[0013] Furthermore, the liquid phase pipeline is also provided with a bypass branch, which is connected in parallel to both sides of the pneumatic regulating valve, including a bypass check valve and a bypass ball valve.

[0014] By adopting the above technical solution, a bypass branch, including a bypass check valve and a bypass ball valve, is installed in parallel on both sides of the pneumatic control valve in the liquid phase pipeline. In case of main control valve failure or maintenance, the bypass ball valve can be manually opened to achieve emergency pressure relief or temporary media flow, preventing a complete system shutdown. The bypass check valve prevents backflow of the media from causing abnormal pressure or equipment damage, ensuring the stability of unidirectional flow in the pipeline. Through the flow diversion and redundant control of the physical structure, the reliability and maintenance flexibility of the system are significantly improved.

[0015] Furthermore, a pressure transmitter is installed on the liquid phase pipeline, which is connected to the liquid phase pipeline section through a pressure gauge root valve.

[0016] By adopting the above technical solution, a pressure transmitter is installed on the liquid phase pipeline and connected to the liquid phase pipeline section through the pressure gauge root valve. This allows for real-time monitoring of pipeline pressure dynamics and timely detection of overpressure or abnormal pressure fluctuations. The integrated design of the pressure gauge root valve facilitates the isolation of the pipeline medium during disassembly, maintenance, or replacement of the pressure transmitter, thus avoiding leakage risks. The pressure transmitter is linked with the quantitative loading controller to trigger the overpressure interlock protection mechanism, automatically shutting off the pneumatic regulating valve and the liquid phase ball valve to prevent equipment damage or oil / gas leakage accidents caused by abnormal pressure, thereby improving system safety and ease of maintenance.

[0017] Furthermore, the anti-overflow and anti-static controller integrates a dual-channel liquid level sensor and is connected to the liquid phase loading arm via a liquid level signal line.

[0018] By adopting the above technical solution, the anti-overflow and anti-static controller integrates a dual-channel liquid level sensor and connects it to the liquid phase loading arm via a liquid level signal line. The redundant design improves the reliability of liquid level monitoring and avoids the risk of missed detection due to single sensor failure. The liquid level signal line transmits the liquid level height data in the liquid phase loading arm to the controller in real time, ensuring that the interlock protection mechanism is quickly triggered when the liquid level exceeds the limit during loading, and the pneumatic regulating valve and liquid phase ball valve are closed simultaneously to prevent overflow accidents. The combination of the dual-channel sensor and the anti-static detection function further eliminates the risk of combustion and explosion caused by abnormal liquid level or static electricity accumulation, and enhances the real-time and comprehensive nature of safety protection.

[0019] Furthermore, the flame arrester of the gas phase pipeline is installed between the gas phase ball valve and the gas phase check valve, and the gas phase pipeline is fixed to the skid base by a pipeline support.

[0020] By adopting the above technical solution, a flame arrester is installed between the gas phase ball valve and the gas phase check valve in the gas phase pipeline. The flame arrester blocks the flame propagation path, and the check valve prevents gas backflow, forming a double protection against backfire and backflow. At the same time, the gas phase pipeline is fixed to the surface of the skid base by the pipeline support, ensuring the stability of the pipeline layout, reducing the risk of interface loosening or leakage caused by vibration or external impact, and improving the overall safety and structural reliability of the gas phase system.

[0021] Furthermore, the Y-type filter is connected to the liquid phase ball valve one and the pneumatic regulating valve is connected to the liquid phase ball valve two via flanges, and each pipe section is fixed to the surface of the skid base via pipe supports.

[0022] By adopting the above technical solution, flange connections are used between the Y-type filter and the liquid phase ball valve, and between the pneumatic regulating valve and the liquid phase ball valve. This facilitates quick disassembly, cleaning, or replacement of the filter and valves, shortening maintenance downtime. The sealing and structural stability of the flange connection ensure no risk of pipeline media leakage, while avoiding interface wear caused by frequent disassembly and assembly. Each pipe section is fixed to the surface of the skid base by pipe supports, enhancing the overall rigidity of the pipeline and reducing interference from vibration or displacement on precision equipment such as flow meters and valves, maintaining installation accuracy and long-term system reliability.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model improves the structural stability and space utilization of the equipment by integrating the liquid phase pipeline and the gas phase pipeline in parallel and fixing the pipeline support, thereby achieving a compact design of the flow path system;

[0025] 2. This utility model uses a Y-type filter, a mass flow meter and a pneumatic regulating valve connected in series in the liquid phase pipeline for coordinated control, combined with the dual protection of the flame arrester and check valve in the gas phase pipeline, to eliminate human operation errors and block the risk of gas backflow and flame backflow.

[0026] 3. This utility model uses the real-time monitoring of the dual-channel liquid level sensor and pressure transmitter of the anti-overflow and anti-static controller to trigger the liquid level, pressure and electrostatic interlock protection mechanism, and quickly shut off the valve to prevent overflow, leakage and explosion accidents;

[0027] 4. This utility model provides an emergency pressure relief channel and quick disassembly and maintenance function through bypass branch, flange connection structure and modular pipeline design, which significantly reduces downtime and improves maintenance efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a top view of the present invention;

[0030] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0031] Figure 4 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0032] Wherein: 1-Liquid phase pipeline; 2-Gas phase pipeline; 3-Liquid phase loading arm; 4-Gas phase loading arm; 5-Overflow and anti-static controller; 6-Quantitative loading controller; 7-Scaffold base; 8-Pipeline support.

[0033] 11-Liquid phase ball valve one; 110-Pressure transmitter; 111-Liquid phase ball valve two; 12-Liquid phase pipeline section; 13-Y-type filter; 14-Mass flow meter; 15-Pneumatic control valve; 16-Bypass check valve; 17-Bypass ball valve; 18-Drain valve; 19-Pressure gauge root valve; 21-Gas phase ball valve one; 22-Gas phase pipeline section; 23-Flame arrester; 24-Gas phase check valve; 25-Gas phase ball valve two. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0035] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As can be seen, in this utility model, a quantitative loading skid designed to prevent misoperation, the liquid phase pipeline 1 and the gas phase pipeline 2 are arranged parallel to each other on the surface of the skid base 7 and fixed by the pipeline support 8, forming an independent and stable dual-pipeline system. The quantitative loading controller 6 and the anti-overflow and anti-static controller 5 are fixed on the surface of the skid base 7 and are respectively connected to the valves and sensors of the liquid phase pipeline 1 and the gas phase pipeline 2 through electrical circuits to realize automated control and safety monitoring. The liquid phase pipeline 1 consists of a liquid phase ball valve 11, a Y-type filter 13, a mass flow meter 14, a pneumatic regulating valve 15, and a liquid phase ball valve 11, from the inlet end to the outlet end. Valve 111 forms a continuous fluid channel. A bypass branch is connected in parallel to both sides of the pneumatic regulating valve 15, including a bypass check valve 16 and a bypass ball valve 17, for emergency operation in case of main valve failure. Pressure transmitter 110 is connected to the liquid phase pipeline section 12 via pressure gauge root valve 19 to monitor pipeline pressure in real time. Y-type filter 13 and liquid phase ball valve 11, as well as pneumatic regulating valve 15 and liquid phase ball valve 111, are connected by flanges for easy disassembly and maintenance. The outlet end of liquid phase pipeline 1 is connected to liquid phase loading arm 3 via a flange or quick connector for docking with the tanker loading port. Gas phase pipeline 2 starts from the inlet... From end to outlet, the system consists of a gas phase ball valve 21, a flame arrester 23, a gas phase check valve 24, and a gas phase ball valve 25, forming a channel for gas recovery or pressure balancing. The flame arrester 23 is installed between the gas phase ball valve 21 and the gas phase check valve 24 to prevent flame backflow, while the check valve 24 prevents gas backflow. The outlet end of the gas phase pipeline 2 is connected to the gas phase loading arm 4 for docking with the tank truck's gas phase interface. A drain valve 18 is also installed below the liquid phase loading arm 3. An anti-overflow and anti-static controller 5 is connected to the liquid phase loading arm 3 via a liquid level signal line and integrates a dual-channel liquid level sensor to monitor the tank truck's liquid level in real time. When the liquid level exceeds the limit... When there is a pressure abnormality or static grounding failure, the controller triggers an interlock signal, and the pneumatic regulating valve 15, liquid phase ball valve 11, and liquid phase ball valve 211 are closed within 0.3 seconds via the quantitative loading controller 6. The pressure transmitter 110 transmits the real-time pressure data to the controller 6. The valves are automatically shut off in case of overpressure to prevent pipeline rupture. All pipeline sections, including liquid and gas phase pipelines, are welded or bolted to the surface of the skid base 7 via the pipeline support 8 to ensure pipeline rigidity and reduce vibration interference. All components are integrated on the skid base 7 to form a modular device, which is convenient for transportation, installation and overall maintenance.

[0037] In one embodiment, the liquid phase pipeline 1 serves as the core channel for gasoline transportation. A continuous flow path is formed by a series of liquid phase ball valve 11, Y-type filter 13, mass flow meter 14, pneumatic regulating valve 15, and liquid phase ball valve 211, enabling precise gasoline metering and closed-loop flow regulation. The Y-type filter 13 intercepts impurities to protect downstream equipment. A bypass branch, including a bypass check valve 16 and a bypass ball valve 17, is connected in parallel to both sides of the pneumatic regulating valve 15, providing emergency pressure relief and temporary flow functions to prevent system shutdown due to main valve failure. The pressure transmitter 110 is connected to the liquid phase pipeline section 12 via the pressure gauge root valve 19, monitoring pressure anomalies in real time and triggering interlock protection. The outlet end of the liquid phase pipeline 1 is connected to the liquid phase loading arm 3 via a flange or quick connector. Its liquid level data is monitored in real time by an anti-overflow and anti-static controller 5, which simultaneously shuts off the valve to prevent overflow when the liquid level exceeds the limit. All pipe sections are fixed to the surface of the skid base 7 via pipe supports 8. Combined with the modular design of flange connections, the rigidity, sealing and quick maintenance of the pipeline are ensured, ultimately forming a safe, reliable, efficient and easy-to-maintain gasoline metering system.

[0038] In one embodiment, the gas phase pipeline 2 and the liquid phase pipeline 1 are arranged parallel to each other on the surface of the skid base 7, and are fixed by the pipeline support 8 to form an independent flow path. From the inlet end to the outlet end, the gas phase ball valve 21, the flame arrester 23, the gas phase check valve 24, and the gas phase ball valve 25 are connected in series, and the end is connected to the gas phase loading arm 4 to connect to the tank truck interface. The flame arrester 23 is installed between the gas phase ball valve 21 and the gas phase check valve 24 to prevent backfire by blocking the flame propagation path, while the check valve 24 inhibits gas backflow. The double protection eliminates the risk of combustion, explosion and abnormal pressure. The pipeline support 8 fixes the pipeline to reduce vibration and displacement, and ensures the long-term stable operation of the gas phase system. The modular flange connection design facilitates the quick disassembly and maintenance of components such as the flame arrester and check valve, reducing downtime. The parallel layout optimizes the spatial structure, improves the compactness of the equipment and the efficiency of transportation and installation, and avoids pipeline cross-interference, comprehensively solving the systemic defects of traditional manual operation such as gas leakage, maintenance difficulties and response delays.

[0039] The anti-overflow and anti-static controller 5 works in conjunction with the quantitative loading controller 6. The anti-overflow and anti-static controller 5 integrates a dual-channel liquid level sensor to monitor the liquid level of the tanker in real time. Redundancy design avoids the risk of single sensor failure. It also has a built-in static grounding continuous detection module, which prevents the system from starting when the grounding resistance exceeds the standard or static electricity is abnormal, thus eliminating the risk of combustion and explosion. The quantitative loading controller 6 is based on PLC programming forced operation logic. It first manually opens the gas phase ball valve 1 21 and the gas phase ball valve 2 25 to confirm that the pipeline is unobstructed, and then starts the pneumatic regulating valve 15 of the liquid phase pipeline 1 to avoid gas backflow or pressure imbalance. It also achieves smooth flow control by dynamically adjusting the valve opening curve to reduce water hammer. Its built-in three-level safety interlock can cut off the pneumatic regulating valve 15 and close the liquid phase ball valve 1 11 and the liquid phase ball valve 2 111 within 0.3 seconds in case of liquid level over-limit, pressure abnormality, or grounding failure, quickly blocking the flow of the medium to prevent overflow, leakage, or combustion and explosion accidents. The two systems work together via electrical signal linkage to replace manual operation. The standardized process reduces the error rate by more than 90%. Meanwhile, the modular design supports the rapid replacement and upgrading of components such as sensors and valves, reducing maintenance downtime. Ultimately, this achieves high precision, high safety, and high reliability in the loading process of hazardous chemicals, completely solving the problems of low efficiency, slow response, and prominent safety hazards in traditional operations.

[0040] Working principle: After the operator manually opens gas phase ball valve 1 (21) and gas phase ball valve 2 (25) and connects liquid phase loading arm 3 and gas phase loading arm 4 to the tank truck, the anti-overflow and anti-static controller 5 automatically detects that the grounding resistance does not exceed 5Ω and the sealing is satisfactory. After the verification is passed, the system is unlocked. The quantitative loading controller 6 sets the target quantity and executes the forced operation logic, first opening liquid phase ball valve 1 (11) and liquid phase ball valve 2 (111), and then the pneumatic regulating valve 15 gradually starts the conveying according to the preset flow curve. The mass flow meter 14 provides real-time feedback of flow data and controls the flow rate. The flow rate is smoothly controlled by dynamically adjusting the valve opening of the instrument 6, while the anti-overflow and anti-static controller 5 continuously monitors the tanker's liquid level through a dual-channel liquid level sensor. If the liquid level exceeds the limit, the pressure is abnormal (detected by the pressure transmitter 110), or the grounding fails, the system will shut off the pneumatic regulating valve 15 and close the liquid phase ball valve 11 and the liquid phase ball valve 211 within 0.3 seconds, blocking the flow of the medium. When the loading volume approaches the set value, the valves will slowly close to complete closure at a rate of 2% per second, and the operator can manually disassemble the loading arm to complete the process. The bypass branch, including the bypass check valve 16 and the ball valve 17, provides an emergency pressure relief channel in case of main valve failure. The Y-type filter 13 is quickly disassembled and maintained via a flange connection. The entire system, with its closed-loop flow regulation, redundant monitoring, and modular design, achieves high-precision loading, second-level safety response, and efficient maintenance, completely solving the problems of low efficiency, large errors, and safety hazards associated with traditional manual operation.

[0041] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A misoperation-preventing quantitative loading skid, characterized in that, include: The liquid phase pipeline (1) and the gas phase pipeline (2) are arranged in parallel on the surface of the skid base (7); The liquid phase pipeline (1) is connected in series with liquid phase ball valve one (11), Y-type filter (13), mass flow meter (14), pneumatic regulating valve (15) and liquid phase ball valve two (111); The gas phase pipeline (2) is connected in series with gas phase ball valve one (21), flame arrester (23), gas phase check valve (24) and gas phase ball valve two (25); The liquid phase loading arm (3) is connected to the outlet end of the liquid phase line (1), and the gas phase loading arm (4) is connected to the outlet end of the gas phase line (2). The quantitative loading controller (6) and the anti-overflow and anti-static controller (5) are fixed on the surface of the skid base (7) and electrically connected to the liquid phase pipeline (1) and the gas phase pipeline (2).

2. The anti-misoperation quantitative loading skid according to claim 1, characterized in that: The liquid phase pipeline (1) is also provided with a bypass branch, which is connected in parallel to both sides of the pneumatic regulating valve (15), including a bypass check valve (16) and a bypass ball valve (17).

3. The anti-misoperation quantitative loading skid according to claim 1, characterized in that: A pressure transmitter (110) is installed on the liquid phase pipeline (1), which is connected to the liquid phase pipeline section (12) through a pressure gauge root valve (19).

4. The anti-misoperation quantitative loading skid according to claim 1, characterized in that: The anti-overflow and anti-static controller (5) integrates a dual-channel liquid level sensor and is connected to the liquid phase loading arm (3) via a liquid level signal line.

5. The anti-misoperation quantitative loading skid according to claim 1, characterized in that: The flame arrester (23) of the gas phase pipeline (2) is installed between the gas phase ball valve (21) and the gas phase check valve (24), and the gas phase pipeline (2) is fixed to the skid base (7) by the pipeline support (8).

6. The anti-misoperation quantitative loading skid according to claim 1, characterized in that: The Y-type filter (13) and the liquid phase ball valve one (11), and the pneumatic regulating valve (15) and the liquid phase ball valve two (111) are all connected by flanges, and each pipe section is fixed to the surface of the skid base (7) by pipe support (8).

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