Train bottom unloading crane pipe device with in-cylinder rotary spraying and heating

Abstract

The application discloses a train bottom-unloading crane pipe device with in-cylinder rotary spraying and heating, and belongs to the technical field of fluid loading and unloading equipment. The device comprises a bottom plate, a movable and adjustable main pipe with an internal coaxial heating pipe arranged inside the bottom plate, a Russian train tank truck connector with an expansion sleeve arranged inside the tail end of the main pipe, and an expansion sleeve tail end in communication with the internal heating pipe. A heating pipe flange in communication with a heating pipe loading port is arranged on the outer wall of the main pipe. After the bottom-unloading truck interface of the train is connected, the expansion sleeve is pushed out by the heating medium pressure and inserted into the tank body. The rotary sprayer is rotated by the spraying reaction force and sprays high-temperature heating medium into the tank, directly heating the solidified and high-viscosity medium in the tank, without the need of modifying the train, and improving the efficiency of the low-temperature bottom-unloading train.

Description

Technical Field

[0001] This invention relates to the field of fluid loading and unloading equipment technology, and in particular to a train bottom unloading arm device with in-tank rotating spray heating. Background Technology

[0002] Bottom unloading of tank cars is particularly challenging for high-pour-point, high-viscosity media such as crude oil and residual oil. In low-temperature environments, the media inside the tank easily solidifies and its viscosity increases, slowing the unloading flow and potentially causing pipe blockage. Existing bottom unloading loading arm heating solutions mostly involve jacketed / electric heating of the loading arm itself, heating only the loading arm piping. There is no heating method for the inside of the tank car; the solidified media inside cannot be heated and can only be heated by external coils, resulting in low heat exchange efficiency, slow thawing, and poor unloading performance. A few top-insertion spray heating systems require opening the tank car manhole, which is unsuitable for enclosed bottom unloading conditions. Summary of the Invention

[0003] The technical problem to be solved by this invention is to overcome the shortcomings of existing bottom unloading arms, which can only heat the arms themselves and cannot directly heat the medium inside the tank of the train car. Without damaging the original bottom interface structure of the train car, after connecting the bottom unloading joint, a high-temperature heating medium can be directly sprayed into the tank to melt the solidified and high-viscosity medium inside the tank, thereby improving the bottom unloading efficiency of train cars in low-temperature environments.

[0004] The technical solution adopted by this invention to solve its technical problem is: a train bottom unloading arm device with in-tank rotating spray heating, comprising a base plate bolted to a concrete foundation, an adjustable main pipe installed at the upper end of the base plate, an internal heating pipe coaxially arranged inside the adjustable main pipe, a Russian-style train tank car connector installed at the end of the adjustable main pipe, a telescopic sleeve installed inside the Russian-style train tank car connector, the end of the telescopic sleeve being connected to the internal heating pipe, and a heating pipe flange connected to the feed port of the internal heating pipe installed on the outer wall of the adjustable main pipe. After docking with the original unloading interface at the bottom of the train tank car, a high-temperature heating medium is introduced into the internal heating pipe. The heating medium enters the tank through the rotating sprayer at the end of the telescopic sleeve. Relying on the reaction force of the medium spray, the rotating sprayer rotates, spraying the high-temperature heating medium into the tank, directly heating the solidified and high-viscosity medium inside the tank.

[0005] Furthermore, the movable adjustable main pipeline includes a first main pipeline steel pipe welded and fixed to the upper end of the base plate, a second main pipeline steel pipe connected to the first main pipeline steel pipe, a third main pipeline steel pipe connected to the second main pipeline steel pipe, and a spring cylinder balancing system.

[0006] Furthermore, a first rotary joint is provided at the bend connection end of the first main pipeline steel pipe and the second main pipeline steel pipe, a second rotary joint is provided at the bend connection end of the second main pipeline steel pipe and the third main pipeline steel pipe, and a third rotary joint is provided at the bend connection end of the third main pipeline steel pipe and the Russian-style train tank car connector.

[0007] Furthermore, the internal heat tracing pipeline includes a first heat tracing pipeline steel pipe fixedly connected to a heat tracing pipeline flange, a second heat tracing pipeline steel pipe connected to the first heat tracing pipeline steel pipe, and a third heat tracing pipeline steel pipe connected to the second heat tracing pipeline steel pipe.

[0008] Furthermore, a fourth rotary joint is provided between the bends of the first and second heat tracing pipes, a fifth rotary joint is provided between the bends of the second and third heat tracing pipes, and a sixth rotary joint is provided between the bends of the third heat tracing pipe and the expansion sleeve.

[0009] Furthermore, internal support frames are provided on the inner walls of the first main pipeline steel pipe, the second main pipeline steel pipe, and the third main pipeline steel pipe. The internal support frames are used to coaxially support the internal heat tracing pipe inside the movable and adjustable main pipeline.

[0010] Furthermore, the telescopic sleeve includes a fixed sleeve fixed inside the Russian-style train tank car connector by an internal bracket, a first movable extension tube slidably inserted into the upper opening of the fixed sleeve, and a second movable extension tube slidably inserted into the upper opening of the first movable extension tube.

[0011] Furthermore, lateral control supports that cooperate with the spring cylinder balancing system are welded and fixed on the outer walls of the second and third main pipes. The two ends of the spring cylinder balancing system are connected to the lateral control supports, and the attitude stability of the movable adjustable main pipe is ensured by elastic support and reset.

[0012] Furthermore, a rotary sprayer is movably mounted at the upper opening of the second movable extension tube. The rotary sprayer rotates due to the reaction force of the heat tracing medium being sprayed, and sprays the heat tracing medium into the tank.

[0013] Furthermore, the Russian-style train tank car connector has a clamping claw at the upper opening for clamping the tank opening.

[0014] The beneficial effects of this invention are as follows: Compared with the traditional heat tracing method that only heats the loading arm pipe, this invention directly heats the solidified and high-viscosity medium inside the train tank car by rotating spraying, which can directly melt the solidified layer, reduce the viscosity of the medium, and significantly improve the unloading efficiency in low-temperature environments; this invention fully utilizes the original bottom unloading interface of the train tank car for docking, without the need to modify the tank car, and operates in a closed state, with no volatilization leakage, making it environmentally friendly and safe; the rotating sprayer of this invention relies on the reaction force of the heat tracing medium spray to achieve self-rotation, without the need for an additional drive motor, resulting in a simple structure and low cost; the telescopic sleeve of this invention automatically extends based on the pressure of the heat tracing medium and automatically retracts when the pressure is lost, without interfering with the entire unloading process, making operation convenient and reliable. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the bottom unloading arm of the present invention.

[0017] Figure 2 This is a schematic cross-sectional view of the movable adjustable main pipe structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal heat tracing pipe structure of the present invention.

[0019] Figure 4 This is a front view of the bottom unloading arm in this invention.

[0020] Figure 5 This is a schematic diagram of the telescopic sleeve in its extended state in this invention.

[0021] Figure 6 This is a schematic diagram of the upper side of the rotary sprayer in this invention.

[0022] Figure 7 This is a schematic diagram of the structure of the lower side of the rotary sprayer in this invention.

[0023] In the diagram: 1. Base plate; 2. Adjustable main pipe; 21. First main pipe steel pipe; 22. Second main pipe steel pipe; 23. Third main pipe steel pipe; 24. First rotary joint; 25. Second rotary joint; 26. Third rotary joint; 27. Internal support frame; 3. Internal heat tracing pipe; 31. First heat tracing pipe steel pipe; 32. Second heat tracing pipe steel pipe; 33. Third heat tracing pipe steel pipe; 34. Fourth rotary joint; 35. Fifth rotary joint; 36. Sixth rotary joint; 4. Heat tracing pipe flange; 5. Russian-style train tank car connector; 51. Clamp; 6. Telescopic sleeve; 61. Fixed sleeve; 62. First movable extension pipe; 63. Second movable extension pipe; 7. Rotary sprayer; 8. Spring cylinder balancing system; 81. Lateral control bracket. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The diagram illustrates a train loading arm with in-tank rotating spray heating system, comprising a base plate 1 bolted to a concrete foundation. The base plate 1 supports the entire loading arm and ensures its stability. An adjustable main pipe 2 is mounted on the upper end of the base plate 1. An internal heating pipe 3 is coaxially arranged inside the adjustable main pipe 2. A Russian-style train tank car connector 5 is installed at the end of the adjustable main pipe 2. A telescopic sleeve 6 is installed inside the Russian-style train tank car connector 5, and the end of the telescopic sleeve 6 is connected to the internal heating pipe 3. A heating pipe flange 4 is installed on the outer wall of the adjustable main pipe 2. The heating pipe flange 4 is connected to the feed port of the internal heating pipe 3 for introducing high-temperature heating medium into the internal heating pipe 3.

[0027] The movable adjustable main pipeline 2 includes a first main pipeline steel pipe 21 welded and fixed to the upper end of the base plate 1, a second main pipeline steel pipe 22 connected to the first main pipeline steel pipe 21, a third main pipeline steel pipe 23 connected to the second main pipeline steel pipe 22, and a spring cylinder balancing system 8. A first rotary joint 24 is provided at the bend connection end between the first main pipeline steel pipe 21 and the second main pipeline steel pipe 22; a second rotary joint 25 is provided at the bend connection end between the second main pipeline steel pipe 22 and the third main pipeline steel pipe 23; and a third rotary joint 26 is provided at the bend connection end between the third main pipeline steel pipe 23 and the Russian-style train car connector 5. Through the first rotary joint 24, the second rotary joint 25, and the third rotary joint 26, the first main pipeline steel pipe 21, the second main pipeline steel pipe 22, and the third main pipeline steel pipe 23 can rotate relative to each other, allowing the movable adjustable main pipeline 2 to flexibly adjust its orientation to adapt to the bottom unloading and docking requirements of train car at different stopping positions.

[0028] The internal heat tracing pipe 3 includes a first heat tracing pipe 31 fixedly connected to the heat tracing pipe flange 4, a second heat tracing pipe 32 connected to the first heat tracing pipe 31, and a third heat tracing pipe 33 connected to the second heat tracing pipe 32. A fourth rotary joint 34 is provided between the bends of the first heat tracing pipe 31 and the second heat tracing pipe 32; a fifth rotary joint 35 is provided between the bends of the second heat tracing pipe 32 and the third heat tracing pipe 33; and a sixth rotary joint 36 is provided between the bends of the third heat tracing pipe 33 and the expansion sleeve 6. The internal heat tracing pipe 3 follows the movable adjustable main pipe 2 throughout its entire length and is coaxially nested with each rotary joint. This ensures that when the sections of the movable adjustable main pipe 2 rotate relative to each other, the internal heat tracing pipe 3 can rotate synchronously with it, preventing the heat tracing pipe from twisting.

[0029] Internal support frames 27 are provided on the inner walls of the first main pipeline steel pipe 21, the second main pipeline steel pipe 22 and the third main pipeline steel pipe 23. The internal support frames 27 are used to coaxially support the internal heat tracing pipe 3 inside the movable and adjustable main pipeline 2, ensuring the stability of the internal heat tracing pipe 3 inside the main pipeline, and at the same time allowing the heat tracing medium to flow smoothly in the internal heat tracing pipe 3.

[0030] Lateral control supports 81 are welded and fixed on the outer walls of the second main pipeline steel pipe 22 and the third main pipeline steel pipe 23. The lateral control supports 81 cooperate with the spring cylinder balance system 8. The two ends of the spring cylinder balance system 8 are connected to the lateral control supports 81. The elastic support reset ensures the stability of the movable adjustable main pipeline 2, so that the loading arm can maintain balance during docking and unloading, reducing the labor intensity of the operator.

[0031] The Russian-style train tank car connector 5 is used to dock with the unloading tank opening at the bottom of the Russian-style train tank car. The upper opening of the Russian-style train tank car connector 5 is equipped with a claw 51, which is used to clamp the tank opening to realize a quick locking connection between the loading arm and the tank car, ensuring reliable docking and good sealing.

[0032] The telescopic sleeve 6 includes a fixed sleeve 61 fixed inside the Russian-style train tank car connector 5 by an internal bracket, a first movable extension tube 62 slidably inserted into the upper opening of the fixed sleeve 61, and a second movable extension tube 63 slidably inserted into the upper opening of the first movable extension tube 62. Under the pressure of the heating medium, the first movable extension tube 62 and the second movable extension tube 63 can slide outward sequentially along the axial direction and extend into the tank body of the tank car; when the supply of the heating medium stops and the pressure disappears, the first movable extension tube 62 and the second movable extension tube 63 automatically retract and are stored under their own gravity and return action, without interfering with the disengagement of the joint.

[0033] A rotary sprayer 7 is movably mounted at the upper opening of the second movable extension tube 63. The rotary sprayer 7 rotates by the reaction force of the sprayed heating medium, eliminating the need for an additional drive motor. The rotary sprayer 7 is supported by bearings and, combined with its unique opening design, allows for 360-degree spraying into the tank without dead angles. The sprayer openings are arc-shaped, located on both the upper and lower side walls of the nozzle, and are staggered.

[0034] The working principle and process of this device are as follows: First, the base plate 1 is fixed to the concrete foundation with bolts. The orientation of the loading arm is adjusted by the first rotary joint 24, the second rotary joint 25 and the third rotary joint 26 of the movable adjustable main pipe 2 so that the Russian-style train tank car connector 5 is aligned with the unloading tank opening at the bottom of the train tank car. The Russian-style train tank car connector 5 is connected and locked to the tank opening by the claw 51, and the valve at the bottom of the train tank car is opened. Subsequently, high-temperature heat tracing medium is introduced into the internal heat tracing pipe 3 through the heat tracing pipe flange 4. The heat tracing medium enters the expansion sleeve 6 through the first heat tracing pipe steel pipe 31, the second heat tracing pipe steel pipe 32, the third heat tracing pipe steel pipe 33, the fourth rotary joint 34, the fifth rotary joint 35, and the sixth rotary joint 36. Under the pressure of the heat tracing medium, the first movable extension pipe 62 and the second movable extension pipe 63 are pushed outward axially and extend into the tank body of the tank truck. The rotary sprayer 7 set at the upper end of the second movable extension pipe 63 relies on the reaction force of the heat tracing medium spray to rotate and spray high-temperature heat tracing medium into the tank body. The high-temperature heat tracing medium is directly sprayed onto the solidified or high-viscosity medium in the tank, directly heating the material in the tank, reducing the viscosity of the medium, and melting the solidified layer. The heated material is unloaded at the bottom through the movable adjustable main pipe 2. After the heating supply stops, the rotary sprayer 7 stops rotating due to the loss of medium pressure, and the telescopic sleeve 6 automatically retracts and is stored after the loss of medium pressure, without interfering with the disengagement of the joint, thus completing the entire unloading process.

[0035] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A train bottom unloading arm device with in-tank rotating spray heating, comprising a base plate (1) bolted to a concrete foundation, characterized in that: The upper end of the base plate (1) is equipped with a movable adjustable main pipe (2), and an internal heat tracing pipe (3) is coaxially arranged inside the movable adjustable main pipe (2). A Russian-style train tank car connector (5) is installed at the end of the movable adjustable main pipe (2). A telescopic sleeve (6) is arranged inside the Russian-style train tank car connector (5). The end of the telescopic sleeve (6) is connected to the internal heat tracing pipe (3). A heat tracing pipe flange (4) connected to the feed port of the internal heat tracing pipe (3) is installed on the outer wall of the movable adjustable main pipe (2).

2. The train bottom unloading arm device with in-tank rotating spray heating according to claim 1, characterized in that: The movable adjustable main pipe (2) includes a first main pipe steel pipe (21) welded and fixed to the upper end of the base plate (1), a second main pipe steel pipe (22) connected to the first main pipe steel pipe (21), a third main pipe steel pipe (23) connected to the second main pipe steel pipe (22), and a spring cylinder balancing system (8).

3. A train bottom unloading arm device with in-tank rotating spray heating according to claim 2, characterized in that: The first main pipe (21) and the second main pipe (22) are connected by a first rotary joint (24) at the bend end, the second main pipe (22) and the third main pipe (23) are connected by a second rotary joint (25) at the bend end, and the third main pipe (23) and the Russian-style train tank car connector (5) are connected by a third rotary joint (26).

4. A train bottom unloading arm device with in-tank rotating spray heating according to claim 1, characterized in that: The internal heat tracing pipe (3) includes a first heat tracing pipe (31) fixedly connected to the heat tracing pipe flange (4), a second heat tracing pipe (32) connected to the first heat tracing pipe (31), and a third heat tracing pipe (33) connected to the second heat tracing pipe (32).

5. A train bottom unloading arm device with in-tank rotating spray heating according to claim 4, characterized in that: A fourth rotary joint (34) is provided between the bend connection ends of the first heat tracing pipe (31) and the second heat tracing pipe (32), a fifth rotary joint (35) is provided between the bend connection ends of the second heat tracing pipe (32) and the third heat tracing pipe (33), and a sixth rotary joint (36) is provided between the bend connection ends of the third heat tracing pipe (33) and the telescopic sleeve (6).

6. A train bottom unloading arm device with in-tank rotating spray heating according to claim 2, characterized in that: The inner walls of the first main pipe (21), the second main pipe (22) and the third main pipe (23) are all provided with internal support frames (27), which are used to coaxially support the internal heat tracing pipe (3) inside the movable adjustable main pipe (2).

7. A train bottom unloading arm device with in-tank rotating spray heating according to claim 5, characterized in that: The telescopic sleeve (6) includes a fixed sleeve (61) fixed inside the Russian-style train tank car connector (5) by an internal bracket, a first movable extension tube (62) slidably inserted into the upper opening of the fixed sleeve (61), and a second movable extension tube (63) slidably inserted into the upper opening of the first movable extension tube (62).

8. A train bottom unloading arm device with in-tank rotating spray heating according to claim 2, characterized in that: The second main pipe (22) and the third main pipe (23) are welded and fixed with lateral control brackets (81) that cooperate with the spring cylinder balance system (8). The two ends of the spring cylinder balance system (8) are connected to the lateral control brackets (81), and the attitude of the movable adjustable main pipe (2) is stabilized by elastic support and reset.

9. A train bottom unloading arm device with in-tank rotating spray heating according to claim 7, characterized in that: The upper opening of the second movable extension tube (63) is movably equipped with a rotary sprayer (7), which is driven to rotate by the reaction force of the heat tracing medium spray and sprays the heat tracing medium into the tank.

10. A train bottom unloading arm device with in-tank rotating spray heating according to claim 1, characterized in that: The Russian-style train tank car connector (5) has a chuck (51) installed at the upper opening position for clamping the tank opening.

Images