Train liquid unloading electric vertical pipe

Abstract

This utility model relates to the technical field of fluid loading and unloading equipment, and discloses an electric vertical pipe for submerged loading of trains, including a wire retractor, a liquid inlet, an outer sleeve, a middle sleeve, an inner sleeve, and a train sealing cap; the outer sleeve, middle sleeve, and inner sleeve constitute a fluid channel from the liquid inlet to the liquid outlet at the end of the inner sleeve; the wire retractor is connected to the inner sleeve via a wire rope; by driving the extension and retraction of the middle and inner sleeves through the wire retractor, the lateral liquid outlet of the inner sleeve can be automatically and accurately delivered below the liquid surface inside the train tank car, avoiding the risks and inefficiencies of manual operation and realizing automated submerged loading; the nested extension and retraction structure of the three sleeves (outer, middle, and inner) allows the equipment to retract when not in operation, occupying little space; when in operation, it can extend to the interior of the tank car at different depths, with strong adaptability; it solves the problems of low efficiency and safety risks in manual loading of vertical pipes.

Description

Technical Field

[0001] This utility model relates to the technical field of fluid loading and unloading equipment, and more specifically, to an electric vertical pipe for submersible loading of trains. Background Technology

[0002] Currently, loading flammable liquids into train tank cars mainly relies on manual loading vertical pipes; this method has significant drawbacks: it is highly dependent on manual labor, requiring manual operation of the vertical pipe for positioning, insertion, and raising and lowering throughout the process, resulting in high labor intensity and low personnel efficiency;

[0003] Significant safety hazards exist: close-range manual handling of flammable and explosive liquids poses safety risks such as collisions, static electricity ignition (especially during the insertion / removal of vertical tubes), and personnel falls.

[0004] Low loading and unloading efficiency: Submersible loading and unloading equipment mostly uses fixed-length vertical pipes, which cannot adapt to tank trucks with different liquid levels. Manual operation is slow and cannot meet the needs of modern logistics for rapid turnover. Utility Model Content

[0005] The purpose of this utility model is to provide an electric vertical pipe for submersible loading of trains, which aims to solve the problems of low efficiency and safety risks in manual loading of vertical pipes in the prior art.

[0006] This utility model relates to an electric vertical pipe for submerged loading of trains, comprising a wire retractor, an inlet, an outer sleeve, a middle sleeve, an inner sleeve, and a train sealing cap. The upper end of the outer sleeve is connected to the inlet, and the lower end of the outer sleeve is connected to the train sealing cap. The middle sleeve is fitted inside the outer sleeve and can extend and retract relative to the outer sleeve. The inner sleeve is fitted inside the middle sleeve and can extend and retract relative to the middle sleeve. The outer sleeve, middle sleeve, and inner sleeve constitute a fluid channel from the inlet to the outlet at the end of the inner sleeve. The wire retractor is connected to the inner sleeve via a wire rope and is used to drive the extension and retraction of the middle sleeve and the inner sleeve, so that the outlet of the inner sleeve extends into the interior of the train tank car for submerged loading. The end of the inner sleeve is a lateral outlet.

[0007] Furthermore, the outer sleeve has a hollow inner cavity, and two inner sleeve limiting rings protrude inward from the bottom opening of the inner cavity to restrict the movement distance of the inner sleeve. An outer sealing area is formed between the two inner sleeve limiting rings at a vertical interval, and an outer sealing wear-resistant ring is installed in the outer sealing area, which slides against the outer wall of the inner sleeve. The inner sleeve also has a hollow inner cavity, and two inner sleeve limiting rings protrude inward from the bottom opening of the inner cavity to restrict the movement distance of the inner sleeve. An inner sealing area is formed between the two inner sleeve limiting rings at a vertical interval, and an inner sealing wear-resistant ring is installed in the inner sealing area, which slides against the outer wall of the inner sleeve.

[0008] Furthermore, the upper outer periphery of the middle sleeve is provided with a middle tube abutment ring protruding outward, and the middle tube abutment ring and the middle tube limiting ring are arranged vertically opposite each other; the upper outer periphery of the inner sleeve is provided with an inner tube abutment ring protruding outward, and the inner tube abutment ring and the inner tube limiting ring are arranged vertically opposite each other.

[0009] Furthermore, the middle tube abutment ring is located in the inner cavity of the outer tube, and the outer side wall of the middle tube abutment ring is spaced apart from the inner side wall of the inner cavity of the outer tube; the inner tube abutment ring is located in the inner cavity of the middle tube, and the outer side wall of the inner tube abutment ring is spaced apart from the inner side wall of the inner cavity of the middle tube.

[0010] Furthermore, the middle sleeve is provided with two middle sleeve abutment rings, and a middle sleeve mounting groove is formed between the two middle sleeve abutment rings vertically and relatively spaced apart. A middle sleeve wear-resistant ring is installed in the middle sleeve mounting groove, and the middle sleeve wear-resistant ring is in movable contact with the inner side wall of the outer sleeve cavity.

[0011] The inner sleeve is provided with two inner tube abutment rings, and an inner tube mounting groove is formed between the two inner tube abutment rings at a vertical relative interval. An inner tube wear-resistant ring is installed in the inner tube mounting groove, and the inner tube wear-resistant ring is in movable contact with the inner side wall of the inner cavity of the middle tube.

[0012] Furthermore, the wire rope winding and unwinding machine is equipped with a torque sensor or a current detection device to monitor the load torque of the driving wire rope or the motor operating current in real time; when the end of the inner sleeve contacts the liquid surface, causing the load to increase, the torque or current change signal is used to determine that the outlet has reached the liquid surface and control the extension to stop.

[0013] Furthermore, the wire winding and unwinding machine includes a motor, a drum, and a wire rope; the motor is connected to the drum via a motor shaft, one end of the wire rope is connected to the drum, and the other end of the wire rope is connected to the bottom of the inner sleeve.

[0014] Furthermore, the motor of the wire winding and unwinding machine is an explosion-proof motor.

[0015] Furthermore, the bottom end of the train sealing cap is provided with a sealing ring for sealing connection with the tank opening of the train tank car.

[0016] Furthermore, the inner sleeve is configured to be detachable so that it can be replaced with inner sleeves of different lengths.

[0017] Compared with existing technologies, the electric vertical pipe for submerged loading of trains provided by this utility model, driven by a wire retractor, extends and retracts the inner and outer sleeves, automatically and precisely delivering the lateral outlet of the inner sleeve below the liquid surface inside the train tank car. This avoids the risks and inefficiencies of manual operation, achieving automated submerged loading. Submerged loading (immersion of the lateral outlet in liquid) greatly reduces the loss of volatile substances during loading, lowers the risk of flammable vapors forming explosive mixtures with air, and reduces the accumulation of static electricity caused by liquid splashing and impact, significantly improving safety and environmental protection. Features include: a train sealing cap design at the lower end of the outer sleeve to form a preliminary seal with the tank car opening, preventing large amounts of oil and gas from leaking out during loading and improving sealing performance; a nested telescopic structure of three sleeves (outer, middle, and inner) that allows the equipment to retract when not in operation, occupying little space; and the ability to extend into tank cars at different depths during operation, making it highly adaptable; a lateral liquid outlet at the end of the inner sleeve that directly discharges liquid to the tank wall or below the liquid surface, further reducing the liquid's falling height and impact, and suppressing splashing and foam generation; and the solution to the problems of low efficiency and safety risks associated with manual loading using vertical pipes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the electric vertical pipe and the train tank car provided by this utility model;

[0019] Figure 2 This is a front view structural diagram of the electric vertical tube provided by this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the electric vertical pipe provided by this utility model;

[0021] Figure 4 This is a utility model Figure 3 A magnified structural diagram of A in the middle;

[0022] Figure 5 This is a utility model Figure 3 A magnified structural diagram of B in the diagram.

[0023] In the diagram: 10 wire reel, 20 outer sleeve, 30 middle sleeve, 40 inner sleeve, 50 train sealing cap, 60 liquid inlet, 70 liquid outlet, 11 wire rope, 12 motor, 13 drum, 21 middle tube limiting ring, 22 outer sealing wear-resistant ring, 31 inner tube limiting ring, 32 inner sealing wear-resistant ring, 33 middle tube abutment ring, 34 middle tube wear-resistant ring, 41 inner tube abutment ring, 42 inner tube wear-resistant ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0028] The electric vertical pipe for submerged loading of trains includes a wire retractor 10, an inlet 60, an outer sleeve 20, a middle sleeve 30, an inner sleeve 40, and a train sealing cap 50. The upper end of the outer sleeve 20 is connected to the inlet 60, and the lower end of the outer sleeve 20 is connected to the train sealing cap 50. The middle sleeve 30 is fitted inside the outer sleeve 20 and can extend and retract relative to the outer sleeve 20. The inner sleeve 40 is fitted inside the middle sleeve 30 and can extend and retract relative to the middle sleeve 30. The outer sleeve 20, the middle sleeve 30, and the inner sleeve 40 form a fluid channel from the inlet 60 to the outlet 70 at the end of the inner sleeve 40. The wire retractor 10 is connected to the inner sleeve 40 via a wire rope 11 and is used to drive the extension and retraction of the middle sleeve 30 and the inner sleeve 40 so that the outlet 70 of the inner sleeve 40 extends into the interior of the train tank car for submerged loading. The end of the inner sleeve 40 is a lateral outlet 70.

[0029] The aforementioned electric vertical pipe for submerged loading of trains, driven by the wire retractor 10, extends and retracts the inner and outer sleeves 40, automatically and precisely delivering the lateral outlet 70 of the inner sleeve 40 below the liquid surface inside the train tank car. This avoids the risks and inefficiencies of manual operation, achieving automated submerged loading. Submerged loading (with the lateral outlet 70 immersed in liquid) significantly reduces the loss of volatile substances during loading, lowers the risk of combustible vapors forming explosive mixtures with air, and reduces the accumulation of static electricity caused by liquid splashing and impact, significantly improving safety and environmental friendliness. The outer sleeve... The train sealing cap 50 at the lower end of the 20 is designed to form a preliminary seal with the tank car opening, preventing a large amount of oil and gas from leaking out during loading and improving sealing performance. The nested telescopic structure of the three-layer sleeve (outer, middle, and inner) allows the equipment to retract when not in operation, occupying little space. When in operation, it can extend into the tank car interior at different depths, making it highly adaptable. The inner sleeve 40 has a side outlet 70 at its end, which directly discharges liquid to the tank wall or liquid surface, further reducing the liquid drop height and impact, and suppressing splashing and foam generation. This solves the problems of low efficiency and safety risks associated with manual loading using vertical pipes.

[0030] In this embodiment, the outer sleeve 20 has a hollow inner cavity. Two inner sleeve limiting rings 21, with their bottom openings facing inwards, are provided to restrict the movement distance of the inner sleeve 30. A vertically spaced outer sealing area is formed between the two inner sleeve limiting rings 21. An outer sealing wear-resistant ring 22 is installed in the outer sealing area, and the outer sealing wear-resistant ring 22 slides against the outer wall of the inner sleeve 30. The inner sleeve 30 also has a hollow inner cavity. Two inner sleeve limiting rings 31, with their bottom openings facing inwards, are provided to restrict the movement distance of the inner sleeve 40. A vertically spaced inner sealing area is formed between the two inner sleeve limiting rings 31. An inner sealing wear-resistant ring 32 is installed in the inner sealing area, and the inner sealing wear-resistant ring 32 slides against the outer wall of the inner sleeve 40.

[0031] Precise positioning and protection: The limiting rings (middle tube limiting ring 21 and inner tube limiting ring 31) at the bottom of the outer sleeve 20 and the middle sleeve 30 precisely limit the movement of the middle sleeve 30 and the inner sleeve 40, preventing the sleeve from excessively extending or retracting, which could cause mechanical damage or detachment.

[0032] Effective dynamic sealing: Sealing wear-resistant rings (outer sealing wear-resistant ring 22, inner sealing wear-resistant ring 32) are installed in the sealing area (outer sealing area, inner sealing area) formed between the limiting rings, and slide against the outer wall of the adjacent sleeve; this ensures that the gap between each layer of sleeve remains effectively sealed during the sleeve expansion and contraction process, preventing liquid from leaking out from between the pipe walls.

[0033] Extended service life: The sealing ring is made of wear-resistant material, which significantly improves its durability under repeated friction in liquid media, reducing leakage caused by wear and the frequency of equipment maintenance.

[0034] In this embodiment, the upper outer periphery of the middle sleeve 30 is provided with a middle tube abutment ring 33, which is arranged vertically opposite to the middle tube limiting ring 21; the upper outer periphery of the inner sleeve 40 is provided with an inner tube abutment ring 41, which is arranged vertically opposite to the inner tube limiting ring 31.

[0035] Enhanced limiting function: The middle tube abutment ring 33 at the upper end of the middle sleeve 30 and the inner tube abutment ring 41 at the upper end of the inner sleeve 40 are arranged vertically opposite to the limiting rings of the outer tube and the middle tube, respectively; when the sleeve is fully retracted, these abutment rings will contact the corresponding limiting rings to form a hard limit, which clearly prevents the sleeve from retracting further, protects the internal structure (such as the connection point of the wire rope 11) from impact or excessive compression, and improves the reliability and life of the equipment.

[0036] Force transmission point: The abutment ring (middle tube abutment ring 33, inner tube abutment ring 41) provides a stable support point for the casing in the retracted state.

[0037] In this embodiment, the middle tube abutment ring 33 is located in the inner cavity of the outer tube, and the outer side wall of the middle tube abutment ring 33 is arranged at intervals with the inner side wall of the inner cavity of the outer tube; the inner tube abutment ring 41 is located in the inner cavity of the middle tube, and the outer side wall of the inner tube abutment ring 41 is arranged at intervals with the inner side wall of the inner cavity of the middle tube.

[0038] To ensure smooth movement: it is clearly stated that there is a gap between the outer wall of the abutment ring (middle tube abutment ring 33, inner tube abutment ring 41) and the inner wall of the corresponding tube cavity (outer tube inner cavity, middle tube inner cavity); this design avoids radial friction between the abutment ring and the tube wall, ensuring that the sleeve only bears axial force (from the wire rope 11 and the limiting ring) during extension and retraction, resulting in low movement resistance, smoother and more stable operation, and reduced risk of jamming.

[0039] Reduced wear: Avoids unnecessary radial friction wear.

[0040] In this embodiment, the middle sleeve 30 is provided with two middle sleeve abutment rings 33, and a middle sleeve mounting groove is formed between the two middle sleeve abutment rings 33 at a vertical relative interval. A middle sleeve wear-resistant ring 34 is installed in the middle sleeve mounting groove, and the middle sleeve wear-resistant ring 34 is in movable contact with the inner wall of the outer tube cavity.

[0041] The inner sleeve 40 is provided with two inner tube abutment rings 41, and the two inner tube abutment rings 41 are vertically spaced to form an inner tube mounting groove. An inner tube wear-resistant ring 42 is installed in the inner tube mounting groove, and the inner tube wear-resistant ring 42 is in movable contact with the inner wall of the inner cavity of the middle tube.

[0042] Enhanced guidance and stability: A wear-resistant ring 34 is installed in the mounting groove of the middle tube between the middle tube abutment rings 33, and the wear-resistant ring 34 moves against the inner wall of the outer tube cavity; an inner tube wear-resistant ring 42 is installed in the mounting groove of the inner tube between the inner tube abutment rings 41, and the inner tube wear-resistant ring 42 moves against the inner wall of the middle tube cavity; these wear-resistant rings (middle tube wear-resistant ring 34, inner tube wear-resistant ring 42) act as radial guide bearings.

[0043] Preventing radial sway: The wear-resistant ring effectively limits the radial sway and eccentricity of the bushing, ensuring that the multi-layer bushing remains basically coaxial during expansion and contraction, improving operational stability and accuracy, and preventing the sealing ring from wearing out or jamming due to eccentricity.

[0044] Share radial load: Bear the lateral forces that the casing may be subjected to (such as slight shaking that may occur during loading).

[0045] Replaceable wear parts: The wear ring is an independent component installed in the groove. It can be easily replaced after wear, resulting in low maintenance costs and avoiding the need to replace the entire sleeve.

[0046] Protecting the core structure: The wear-resistant ring wears faster than the abutment ring body, thus protecting both the abutment ring and the pipe wall body.

[0047] In this embodiment, the wire winding and unwinding machine 10 is equipped with a torque sensor or a current detection device to monitor the load torque of the driving wire rope 11 or the operating current of the motor 12 in real time. When the end of the inner sleeve 40 contacts the liquid surface, causing the load to increase, the change signal of torque or current is used to determine that the liquid outlet 70 has reached the liquid surface and control the extension to stop.

[0048] Intelligent liquid level detection and positioning: The load torque of the wire rope 11 or the current of the drive motor 12 is monitored in real time using a torque sensor or current detection device. When the end of the inner sleeve 40 (liquid outlet 70) contacts the liquid surface, the resistance (load) suddenly increases, causing a significant increase in torque or current. After detecting this change signal, the system can automatically determine that the liquid outlet 70 has reached the liquid surface position and immediately control the wire rope retractor 10 to stop extending.

[0049] Automatic and precise control of immersion depth: ensures that the end of the inner sleeve 40 stops at a position that just touches or is slightly below the liquid surface (according to the set logic), achieving the best submerged loading effect (ensuring submerged liquid discharge while avoiding excessive insertion that would cause unnecessary resistance or equipment stress).

[0050] Enhanced automation and safety: Completely eliminates the need for manual observation and judgment of the liquid level, making operation more convenient, precise, and safe. Prevents equipment overload damage or wire rope 11 loosening due to excessive insertion.

[0051] In this embodiment, the wire winding and unwinding machine 10 includes a motor 12, a drum 13 and a wire rope 11; the motor 12 is connected to the drum 13 through the motor 12 shaft, one end of the wire rope 11 is connected to the drum 13, and the other end of the wire rope 11 is connected to the bottom of the inner sleeve 40.

[0052] A reliable drive solution is provided: the core components of the wire rope winding machine 10 are defined: the motor 12 provides power, the drum 13 winds the wire rope 11, one end of the wire rope 11 is fixed on the drum 13, and the other end is connected to the bottom of the inner sleeve 40; this is the most direct, reliable and mature mechanical transmission method to realize the extension and retraction of the sleeve.

[0053] The force transmission path is clear: the steel wire rope 11 directly pulls the innermost sleeve (inner sleeve 40), and the inner sleeve 40 drives the middle sleeve (middle sleeve 30) to move, which is simple and efficient.

[0054] In this embodiment, the motor 12 of the wire winding and unwinding machine 10 is an explosion-proof motor 12.

[0055] Enhanced intrinsic safety: When loading operations are carried out in flammable and explosive hazardous locations such as petroleum and chemical plants, the use of explosion-proof motor 12 is a mandatory requirement; this design effectively prevents the electric sparks and high temperatures generated during the operation of motor 12 from igniting the surrounding explosive environment, greatly improving the intrinsic safety level of the equipment when used in hazardous areas and complying with safety regulations.

[0056] Ensuring operational safety is the key foundation for the safe operation of the entire set of equipment.

[0057] In this embodiment, the bottom end of the train sealing cap 50 is provided with a sealing ring for sealing connection with the tank opening of the train tank car.

[0058] Enhanced tank opening sealing effect: A sealing ring is added to the bottom of the train sealing cap 50, so that when it comes into contact with the tank opening of different models of train tank cars that may be slightly deformed, it can achieve a tighter and more reliable seal through the elastic deformation of the sealing ring.

[0059] Reduce oil and gas leakage: Effectively prevent large amounts of volatile oil and gas from leaking out of the tank opening during loading, improve the working environment, reduce material loss, and reduce environmental pollution and safety (explosion, poisoning) risks.

[0060] In this embodiment, the inner sleeve 40 is configured to be detachable so that it can be replaced with inner sleeves 40 of different lengths.

[0061] Improve equipment versatility and flexibility: By designing the inner sleeve 40 as a detachable connection (such as flange connection, quick-release clamp, etc.), it is easy to replace inner sleeves 40 of different lengths.

[0062] Adaptable to diverse needs: For different types of train tank cars (with large differences in tank depth) or different working conditions (requiring different immersion depths), it can be quickly adapted by simply replacing the inner sleeve of the appropriate length 40, without replacing the entire set of vertical pipe equipment, which greatly improves the versatility and economic efficiency of the equipment.

[0063] Easy to maintain and replace: If the inner sleeve 40 (as the innermost layer, it may come into contact with the medium for corrosion or wear) is damaged, it can be disassembled and replaced separately, reducing maintenance costs and difficulty.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A train submersible loading electric vertical pipe, characterized in that, The system includes a wire retractor, a liquid inlet, an outer sleeve, a middle sleeve, an inner sleeve, and a train sealing cap. The upper end of the outer sleeve is connected to the liquid inlet, and the lower end of the outer sleeve is connected to the train sealing cap. The middle sleeve is fitted inside the outer sleeve and can extend and retract relative to the outer sleeve. The inner sleeve is fitted inside the middle sleeve and can extend and retract relative to the middle sleeve. The outer sleeve, middle sleeve, and inner sleeve form a fluid channel from the liquid inlet to the liquid outlet at the end of the inner sleeve. The wire retractor is connected to the inner sleeve via a wire rope and is used to drive the extension and retraction of the middle sleeve and the inner sleeve so that the liquid outlet of the inner sleeve extends into the interior of the train tank car for submerged loading. The end of the inner sleeve is a lateral liquid outlet.

2. The electric vertical pipe for submersible loading of trains as described in claim 1, characterized in that, The outer sleeve has a hollow inner cavity. Two inner sleeve limiting rings protrude inward from the bottom opening of the outer sleeve to restrict the movement distance of the inner sleeve. An outer sealing area is formed between the two inner sleeve limiting rings, which are vertically spaced apart. An outer sealing wear-resistant ring is installed in the outer sealing area and slides against the outer wall of the inner sleeve. The inner sleeve also has a hollow inner cavity. Two inner sleeve limiting rings protrude inward from the bottom opening of the inner sleeve to restrict the movement distance of the inner sleeve. An inner sealing area is formed between the two inner sleeve limiting rings, which are vertically spaced apart. An inner sealing wear-resistant ring is installed in the inner sealing area and slides against the outer wall of the inner sleeve.

3. The electric vertical pipe for submersible loading of trains as described in claim 2, characterized in that, The upper outer periphery of the middle sleeve is provided with a middle tube abutment ring protruding outward, and the middle tube abutment ring and the middle tube limiting ring are arranged vertically opposite each other; the upper outer periphery of the inner sleeve is provided with an inner tube abutment ring protruding outward, and the inner tube abutment ring and the inner tube limiting ring are arranged vertically opposite each other.

4. The electric vertical pipe for submersible loading of trains as described in claim 3, characterized in that, The middle tube abutment ring is located in the inner cavity of the outer tube, and the outer side wall of the middle tube abutment ring is spaced apart from the inner side wall of the inner cavity of the outer tube; the inner tube abutment ring is located in the inner cavity of the middle tube, and the outer side wall of the inner tube abutment ring is spaced apart from the inner side wall of the inner cavity of the middle tube.

5. The electric vertical pipe for submersible loading of trains as described in claim 4, characterized in that, The middle sleeve is provided with two middle sleeve abutment rings, and a middle sleeve mounting groove is formed between the two middle sleeve abutment rings vertically and relatively spaced apart. A middle sleeve wear-resistant ring is installed in the middle sleeve mounting groove, and the middle sleeve wear-resistant ring is in movable contact with the inner side wall of the outer tube cavity. The inner sleeve is provided with two inner tube abutment rings, and an inner tube mounting groove is formed between the two inner tube abutment rings at a vertical relative interval. An inner tube wear-resistant ring is installed in the inner tube mounting groove, and the inner tube wear-resistant ring is in movable contact with the inner side wall of the inner cavity of the middle tube.

6. The electric vertical pipe for submersible loading of trains as described in any one of claims 1 to 5, characterized in that, The wire rope winding and unwinding machine is equipped with a torque sensor or current detection device to monitor the load torque of the driving wire rope or the motor operating current in real time; when the end of the inner sleeve contacts the liquid surface, causing the load to increase, the torque or current change signal is used to determine that the outlet has reached the liquid surface and control the extension to stop.

7. The electric vertical pipe for submersible loading of trains as described in any one of claims 1 to 5, characterized in that, The wire winding and unwinding machine includes a motor, a drum, and a wire rope; the motor is connected to the drum via a motor shaft, one end of the wire rope is connected to the drum, and the other end of the wire rope is connected to the bottom of the inner sleeve.

8. The electric vertical pipe for submersible loading of trains as described in claim 7, characterized in that, The motor of the wire winding machine is an explosion-proof motor.

9. The electric vertical pipe for submersible loading of trains as described in any one of claims 1 to 5, characterized in that, The bottom of the train sealing cap is equipped with a sealing ring for sealing connection with the tank opening of the train tank car.

10. The electric vertical pipe for submersible loading of trains as described in any one of claims 1 to 5, characterized in that, The inner sleeve is designed to be detachable so that it can be replaced with inner sleeves of different lengths.

Images