Safety device for loading crude oil

Abstract

The utility model relates to a crude oil sealed loading safety device technical field, concretely is a kind of crude oil sealed loading safety device, including storage tank main body, gas phase pipe and liquid phase pipe, the upside of storage tank main body is fixedly connected with storage tank top cover, the upside middle of storage tank top cover is fixedly connected with bottom disc, the middle both sides of bottom disc are fixedly connected with gas phase pipe and liquid phase pipe, gas phase pipe right side is connected with oil hose, gas phase pipe and oil hose are fixedly connected by butterfly valve, liquid phase pipe right side is connected with oil hose, liquid phase pipe and oil hose are fixedly connected by butterfly valve, the left side of the top of bottom disc is fixedly connected with vent line, butterfly valve is sleeved on vent line, the left end rear corner of vent line is fixed with snap ring limit inside through right vent line, recess is matched with right vent line snap ring on left vent line, and the cooperation design of snap ring and recess realizes limit, guarantees that vent line can stably rotate.

Description

Technical Field

[0001] This utility model relates to the technical field of a closed-loop loading safety device for crude oil, specifically a closed-loop loading safety device for crude oil. Background Technology

[0002] In the crude oil extraction and transportation process, loading and unloading crude oil from a single well is one of the key procedures. Traditional crude oil loading often adopts an open-style splash loading method, which has many prominent problems: crude oil is prone to leakage during the splashing process, which not only wastes resources but also causes serious pollution to the surrounding soil and water environment. The flammable gases generated by crude oil volatilization accumulate in the loading and unloading area, creating a very high fire and explosion hazard. Once exposed to open flames or static sparks, it is very easy to cause safety accidents. The volatilized oil and gas contain a variety of toxic and harmful substances, and long-term exposure will damage the health of on-site operators and even cause the risk of poisoning. Open-style loading cannot accurately monitor the tanker liquid level in real time, which easily leads to oil spills, further aggravating safety and environmental risks.

[0003] While existing technologies for closed loading of crude oil tankers include devices with basic functions such as liquid phase transportation and gas phase recovery, some of these devices are complex in structure and cumbersome in operation. They also have shortcomings in terms of oil and gas sealing effect, ease of liquid level monitoring, and adaptability to loading requirements under different pressure conditions. Some closed loading devices lack dedicated anti-overflow monitoring structures, which can easily lead to oil and gas leaks during liquid level observation. Furthermore, the gas phase emission pipelines of some devices are poorly designed, failing to ensure that the concentration of combustible gases drops to a safe level. Therefore, a closed crude oil loading system with optimized structure, simple operation, safety, environmental protection, and adaptability to various loading conditions is needed to address the aforementioned deficiencies in existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a closed-loop safety device for loading crude oil onto trucks, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a closed-loop safety device for loading crude oil, comprising a tank body, a gas phase pipe, and a liquid phase pipe. A tank top cover is fixedly connected to the upper side of the tank body. A chassis is fixedly connected to the upper middle of the tank top cover. A gas phase pipe and a liquid phase pipe are fixedly connected to the two sides of the middle of the chassis, respectively. An oil receiving hose is connected to the right side of the gas phase pipe. The gas phase pipe and the oil receiving hose are fixedly connected by a butterfly valve. An oil receiving hose is connected to the right side of the liquid phase pipe. The liquid phase pipe and the oil receiving hose are fixedly connected by a butterfly valve. A venting line is fixedly connected to the upper left side of the chassis. A butterfly valve is fitted onto the venting line. A liquid level measuring device is inserted in the middle of the chassis. A ball float is connected to the bottom of the liquid level measuring device. An oil measurement observation hole is inserted on the right side of the chassis.

[0006] Preferably, there are three butterfly valves. The gas phase pipe and the oil inlet hose are fixedly connected to both sides of the butterfly valve by nuts and screws, respectively. The liquid phase pipe and the oil inlet hose are fixedly connected to both sides of the butterfly valve by nuts and screws. The butterfly valve is fixedly connected to the vent line by bolts. The connection method of multiple sets of bolts ensures that the connection of each component is firm and stable, and improves the rigidity and reliability of the overall structure of the device.

[0007] Preferably, at the left end of the venting line, a retaining ring is fixed inside the right venting line to limit the bend. The left venting line has a groove that matches the retaining ring of the right venting line. The matching design of the retaining ring and the groove achieves the limiting effect and ensures that the venting line can rotate stably.

[0008] Preferably, the oil level observation hole is fixedly connected to the chassis by bolts. The bolt connection method facilitates installation and disassembly, reduces maintenance difficulty, and ensures the stability of the connection part.

[0009] Preferably, the two sides of the ball float are fixedly connected to fixed blocks, and the outer sides of the two fixed blocks are engaged with each other. The fixed blocks are provided with grooves that match the column. The matching design of the engaging structure and the groove restricts the stable movement of the device and improves the stability of the device.

[0010] Preferably, the upper end of the support column is fixedly connected to the bottom of the chassis, and the lower end of the support column is fixedly inserted with a fixing plate. There are two fixing plates in total. This structural design further strengthens the support strength of the components and improves the overall stability of the device.

[0011] Preferably, a pin is inserted at the rear right side of the vent line, and a groove matching the pin is formed on the vent line. A steel wire is connected to the bottom of the pin, and a connecting ring is fixedly connected to the other end of the steel wire. The bottom of the connecting ring is fixedly connected to the chassis. The multi-stage connection structure achieves precise positioning and stable connection between components through the cooperation of the groove and the pin, ensuring the stability of the device operation.

[0012] This utility model provides a closed-loop safety device for loading crude oil onto trucks, which has the following advantages: By employing a closed-loop submersible oil loading design, coupled with a static electricity dissipation system and a high-altitude oil and gas emission structure, the problem of crude oil leakage inherent in traditional splash-type oil loading has been completely solved. This effectively eliminates the fire and explosion hazards during the loading and unloading of crude oil from a single well. At the same time, the oil and gas are discharged at high altitude over a long distance via a gas phase pipeline, preventing operators from coming into contact with toxic and harmful oil and gas. This fundamentally eliminates the risk of poisoning and injury to personnel caused by gas volatilization, ensuring the personal safety of operators.

[0013] The system offers significant environmental benefits. It operates in a completely closed system with no crude oil dripping or oil and gas leakage, effectively preventing crude oil from polluting the surrounding soil and water environment. It also reduces air pollution caused by oil and gas volatilization, meeting environmental protection requirements. No materials are carried out during loading, reducing resource waste and improving the resource utilization rate of crude oil loading.

[0014] Liquid and gas phase pipes can be flexibly connected, and quick-connect fittings for oil tanks enable rapid connection, significantly shortening loading preparation time. The liquid level can be monitored in real time through the anti-overflow oil level observation port, eliminating the need for frequent opening of the sealing structure, simplifying the operation process, reducing the labor intensity of operators, and improving loading efficiency. After loading, only the oil connection hose needs to be removed, relevant valves closed, and the pipeline laid down and emptied. The operation steps are simple and easy to understand, facilitating on-site personnel to master. All system components are made of oil-resistant, corrosion-resistant, and high-strength materials. The pipeline support frame ensures stable installation of each pipeline. The sealing performance of components such as sealing caps, butterfly valve switches, and quick-connect fittings is excellent, and long-term use is less prone to aging and leakage, extending the system's service life and reducing equipment maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the butterfly valve structure of this utility model; Figure 3 This is a schematic diagram of the liquid level measuring device of this utility model; Figure 4 This is a schematic diagram of the vent pipeline structure of this utility model; In the diagram: 1. Tank body; 2. Tank top cover; 3. Vapor phase pipe; 4. Liquid phase pipe; 5. Butterfly valve; 6. Nut; 7. Screw; 8. Chassis; 9. Liquid level gauge; 10. Oil gauging hole; 11. Oil inlet hose; 12. Ball float; 13. Fixing block; 14. Support column; 15. Vent line; 16. Pin; 17. Steel wire; 18. Connecting ring; 19. Fixing plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a closed-loop safety device for loading crude oil, comprising a tank body 1, a gas phase pipe 3, and a liquid phase pipe 4. A tank top cover 2 is fixedly connected to the upper side of the tank body 1. A chassis 8 is fixedly connected to the middle of the upper side of the tank top cover 2. A gas phase pipe 3 and a liquid phase pipe 4 are fixedly connected to the two sides of the middle of the chassis 8, respectively. An oil receiving hose 11 is connected to the right side of the gas phase pipe 3, and the gas phase pipe 3 and the oil receiving hose 11 are fixedly connected by a butterfly valve 5. An oil receiving hose 11 is connected to the right side of the liquid phase pipe 4, and the liquid phase pipe 4 and the oil receiving hose 11 are fixedly connected by a butterfly valve 5. A venting line 15 is fixedly connected to the upper left side of the chassis 8, and a butterfly valve 5 is fitted on the venting line 15. A liquid level measuring device 9 is inserted in the middle of the chassis 8, and a ball float 12 is connected to the bottom of the liquid level measuring device 9. A side-mounted oil measurement observation hole 10 is provided. The liquid phase pipe 4 and the gas phase pipe 3 are respectively installed on the pipeline support frame. The rotation angle and extension length of the two are adjusted to ensure that the end of the liquid phase pipe 4 can be smoothly connected to the liquid phase interface of the tank truck, and the end of the gas phase pipe 3 can be extended to the preset high-altitude discharge point. After installation, the flexibility and sealing of each rotating joint are checked to ensure that there is no jamming or leakage. A butterfly valve 5 switch and an oil receiving hose 11 are installed on the branch pipe of the liquid phase pipe 4. The oil tank quick-connect connector is installed at the end of the oil receiving hose 11 to ensure that the oil receiving hose 11 is firmly connected. The butterfly valve 5 switch is flexible and the sealing is reliable. A vent butterfly valve 5 switch is installed in series on the vent pipeline 15, and the other end of the vent pipeline 15 is extended to the high-altitude safe discharge area to ensure that the vent pipeline 15 is installed firmly and without bending or leakage risks. An oil level observation port 10 is installed on the main structure, ensuring that the observation port is positioned conveniently for operators to stand and observe, and that the observation window is clean, transparent, and well-sealed. The grounding clamps of the static electricity conduction system are fixed to the connection points between the main body of the system and the tanker body, and the static electricity conduction wires are connected to the grounding device to ensure that the grounding resistance meets safety standards and that static electricity is effectively discharged. After the equipment is installed, an airtightness test and a pressure test are performed. All valves are closed, and gas at a certain pressure is introduced into the system. The pressure is maintained for a period of time, and all sealed connections, valves, and pipelines are checked for leaks. At the same time, the static electricity conduction performance of the static electricity conduction system is tested to ensure that static electricity is discharged normally. The clarity of the internal view is checked through the oil level observation port 10 to ensure that the liquid level observation is unobstructed.

[0019] There are three butterfly valves 5. The gas phase pipe 3 and the oil inlet hose 11 are fixedly connected to both sides of the butterfly valve 5 by nuts 6 and screws 7 respectively. The liquid phase pipe 4 and the oil inlet hose 11 are fixedly connected to both sides of the butterfly valve 5 by nuts 6 and screws 7. The butterfly valve 5 is fixedly connected to the vent line 15 by bolts. The distributed fixing design of multiple bolts makes the connection strength of each component evenly distributed, which significantly enhances the deformation resistance and long-term operational reliability of the overall structure of the device.

[0020] At the left end of the vent line 15, a retaining ring is fixed inside the right vent line 15 to limit the bend. The left vent line 15 has a groove that matches the retaining ring of the right vent line 15. The embedded limiting structure of the retaining ring and the groove not only achieves angular constraint during the rotation of the vent line 15, but also eliminates gap wobble through physical engagement, ensuring the smoothness of the rotation and the positioning accuracy.

[0021] The oil level observation hole 10 is fixedly connected to the chassis 8 by bolts. The standardized bolt connection method not only simplifies the installation process and reduces the reliance on professional tools, but also achieves the anti-loosening effect of the connection part through thread pre-tightening force, taking into account both maintenance convenience and structural stability.

[0022] The two sides of the ball float 12 are fixedly connected to the fixing blocks 13. The outer sides of the two fixing blocks 13 are engaged with the support column 14. The fixing blocks 13 have grooves that match the support column 14. The interlocking structure of the concave and convex fits effectively restricts the relative displacement between the components through the mechanical interlocking of the contact surfaces. It can still maintain the connection rigidity under vibration conditions and greatly improve the operating stability of the device.

[0023] The upper end of the support column 14 is fixedly connected to the bottom of the chassis 8, and the lower end of the support column 14 is fixedly inserted with a fixing plate 19. There are two fixing plates 19 in total. The double-inserted support structure forms a symmetrical force system, which disperses the load transmitted by the chassis 8, avoids stress concentration at a single point, and strengthens the component support strength and overall structural stability from a mechanical perspective.

[0024] A pin 16 is inserted at the rear right side of the vent line 15. A groove matching the pin 16 is formed on the vent line 15. A steel wire 17 is connected to the bottom of the pin 16, and a connecting ring 18 is fixedly connected to the other end of the steel wire 17. The bottom of the connecting ring 18 is fixedly connected to the chassis 8. The multi-level nested connection achieves precise assembly between components through the synergistic effect of groove guidance and insertion positioning. At the same time, the load is distributed through multi-node force transmission paths, ensuring the operational stability of the device under dynamic conditions.

[0025] Working principle: Align the liquid phase interface and gas phase interface of the tank truck with the docking positions of the liquid phase arm and gas phase arm of the system. Clamp the grounding clamp of the static electricity conduction system to the tank truck body and the main body of the system respectively to ensure good grounding. Check whether the sealing cover has been completely removed, whether all valves are in the closed position, and whether the venting line 15 is in the folded-down storage position. Seal and connect the oil tank quick-connect connector at the end of the liquid phase arm to the liquid phase interface of the tank truck, ensuring that the connector is properly inserted and removed, and that the sealing gasket is tightened without any looseness. According to the loading requirements, seal and connect the oil receiving hose 11 to the spare interface of the tank truck through the oil tank quick-connect connector, ensuring that the connection is firm and sealed. Erect the venting line 15 to the preset discharge angle, ensuring that the line is free of bends and blockages.

[0026] Then, open the venting butterfly valve 5 to vent the system pipeline, removing air and impurities. After venting for a period of time, check the venting line 15 for any abnormal gas or impurities to ensure the pipeline is clean and unobstructed. Open the butterfly valve 5 to connect the oil inlet hose 11 to the liquid phase arm. Then, open the loading valve. Crude oil enters the tanker truck via the liquid phase arm and inlet hose 11 using submersible transfer to avoid splashing. The operator monitors the tanker truck's liquid level in real time through the gauging port 10 and adjusts the loading valve opening according to the rate of liquid level rise to control the loading flow and ensure a smooth loading process without the risk of spillage. During the loading process, the system's sealing connections are monitored in real time. Check for crude oil leaks and oil / gas volatilization. Observe whether the static electricity conduction system is working properly to ensure no static electricity buildup. At the same time, pay attention to the discharge of the venting pipeline 15 to ensure that the oil and gas are discharged smoothly at high altitude. Operators should regularly use a combustible gas detector to detect the concentration of combustible gas in the operating area to ensure that the concentration of combustible gas is zero. When the liquid level of the tank truck is observed to reach the preset filling volume through the oil measurement observation hole 10, close the oil loading valve and stop the crude oil delivery. Then close the butterfly valve 5 switch, cut off the oil passage of the oil receiving hose 11, disconnect the oil receiving hose 11 from the tank truck, close the venting butterfly valve 5 switch, lay the venting pipeline 15 down and return it to the storage position, remove the static electricity grounding clamp, and complete the loading operation.

[0027] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are only preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A closed-loop safety device for loading crude oil onto trucks, comprising a storage tank body (1), a gas phase pipe (3), and a liquid phase pipe (4), characterized in that: The tank body (1) is fixedly connected to the upper side of the tank top cover (2). The tank top cover (2) is fixedly connected to the middle of the upper side of the tank bottom cover (2). The middle two sides of the bottom plate (8) are fixedly connected to the gas phase pipe (3) and the liquid phase pipe (4). The right side of the gas phase pipe (3) is connected to the oil receiving hose (11). The gas phase pipe (3) and the oil receiving hose (11) are fixedly connected by the butterfly valve (5). The right side of the liquid phase pipe (4) is connected to the oil receiving hose (11). The liquid phase pipe (4) and the oil receiving hose (11) are fixedly connected by the butterfly valve (5). The upper left side of the bottom plate (8) is fixedly connected to the venting line (15). The venting line (15) is fitted with the butterfly valve (5). The bottom of the bottom plate (8) is connected to the liquid level measuring device (9). The bottom of the liquid level measuring device (9) is connected to the ball float (12). The right side of the bottom plate (8) is connected to the oil measurement observation hole (10).

2. The crude oil sealed loading safety device according to claim 1, characterized in that: There are three butterfly valves (5). The gas phase pipe (3) and the oil inlet hose (11) are fixedly connected on both sides of the butterfly valve (5) by nuts (6) and screws (7). The liquid phase pipe (4) and the oil inlet hose (11) are fixedly connected on both sides of the butterfly valve (5) by nuts (6) and screws (7). The butterfly valve (5) is fixedly connected to the vent line (15) by bolts.

3. The crude oil sealed loading safety device according to claim 1, characterized in that: At the bend of the left end of the vent line (15), a retaining ring is fixed inside the vent line (15) on the right side to limit the movement. The vent line (15) on the left side has a groove that matches the retaining ring of the vent line (15) on the right side.

4. The crude oil sealed loading safety device according to claim 1, characterized in that: The oil level observation hole (10) is fixedly connected to the chassis (8) by bolts.

5. The crude oil sealed loading safety device according to claim 1, characterized in that: The two sides of the ball float (12) are fixedly connected to the fixing blocks (13), and the outer sides of the two fixing blocks (13) are engaged with the support column (14). The fixing blocks (13) have grooves that match the support column (14).

6. The crude oil sealed loading safety device according to claim 5, characterized in that: The upper end of the support column (14) is fixedly connected to the bottom of the chassis (8), and the lower end of the support column (14) is fixedly inserted with a fixing plate (19), and there are two fixing plates (19).

7. The crude oil sealed loading safety device according to claim 1, characterized in that: A pin (16) is inserted at the rear right side of the vent line (15). A groove matching the pin (16) is provided on the vent line (15). A steel wire (17) is connected to the bottom of the pin (16). A connecting ring (18) is fixedly connected to the other end of the steel wire (17). The bottom of the connecting ring (18) is fixedly connected to the chassis (8).

Images