Oil receiving and dispatching vehicle for railway oil tank truck

Abstract

The invention relates to an oil receiving and dispatching vehicle for a railway oil tank truck, belongs to the technical field of railway oil transportation, and solves the problem of low efficiency of an existing oil receiving and dispatching vehicle in the prior art. The device comprises an underframe, an oil transfer arm assembly, an oil receiving and transmitting pipeline, a process pipeline and an oil collecting and conveying pipeline, the oil transfer arm assembly, the process pipeline and the reel are arranged on the underframe, the oil receiving and sending pipeline is arranged on the oil transfer arm assembly, an oil-submerged pump is arranged at one end of the oil receiving and sending pipeline and can extend into a tank opening of a railway tank truck, and the other end of the oil receiving and sending pipeline is connected with the first end of the process pipeline; the second end of the process pipeline is connected with the first end of the oil collecting and conveying pipeline; the second end of the oil collecting and conveying pipeline can be connected with an oil storage container. Oil receiving and oil distributing can be achieved through the same pipeline, oil receiving is achieved through positive pressure relay of the oil-submerged pump and the main oil delivery pump, power can be provided through the main oil delivery pump during oil distributing, and the oil receiving and distributing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway oil transportation technology, and particularly relates to a receiving and delivering oil vehicle for railway oil tank vehicles. BACKGROUND

[0002] In the railway oil transportation system, the oil tank vehicle delivery and oil transfer are mainly realized through fixed oil unloading platforms or receiving and delivering oil vehicles. The fixed oil unloading platform is usually composed of a platform building arranged along the railway and higher than the top of the oil tank vehicle, and is equipped with oil unloading and receiving and delivering oil pipelines. Through the oil pump set and the pipeline system, the automobile oil tank or the fixed oil depot is connected with the oil unloading and receiving and delivering oil pipelines to realize the stable oil transfer. Under normal circumstances, this facility can efficiently and orderly complete the oil transfer work and provide reliable guarantee for railway oil transportation. However, the fixed oil unloading platform has high construction cost. From site selection and planning to construction and post-maintenance, a large amount of funds needs to be invested. Moreover, it is not mobile and difficult to be flexibly adjusted according to actual needs. In wartime or natural disasters, the fixed oil unloading platform is easily damaged, which leads to the failure of oil transfer and seriously affects the smooth progress of railway oil transportation.

[0003] The receiving and delivering oil vehicle can be used for emergency receiving of railway oil and can also be used for emergency oil delivery to the railway oil tank vehicle. The receiving and delivering oil vehicle can quickly open a temporary railway oil tank vehicle receiving and delivering oil point to realize the rapid receiving and delivering of the oil of the railway oil tank vehicle and can directly deliver oil to the automobile oil tank, which effectively improves the emergency mobility.

[0004] Although the receiving and delivering oil vehicle has certain advantages in emergency situations, it also has limitations. The pipeline needs to be temporarily laid and connected, which takes a lot of time and is difficult to meet the needs of large-scale oil transfer. When facing large-scale oil transportation tasks, the receiving and delivering oil vehicle may need to be frequently returned, and because the position of the receiving and delivering oil vehicle is not fixed, the positioning between the receiving and delivering oil vehicle and the railway oil tank vehicle is difficult, the efficiency is low, and the oil transfer cannot be realized as efficiently and continuously as the fixed facility. SUMMARY

[0005] In view of the above analysis, the present application aims to provide a receiving and delivering oil vehicle for railway oil tank vehicles to solve the problem of low efficiency of the existing receiving and delivering oil vehicle.

[0006] In one aspect, the application provides a receiving and delivering oil vehicle for a railway oil tank vehicle, comprising a chassis, an oil delivery arm assembly, a receiving and delivering oil pipeline, a process pipeline and a collecting and delivering oil pipeline; the oil delivery arm assembly, the process pipeline and the collecting and delivering oil pipeline are arranged on the chassis, the receiving and delivering oil pipeline is arranged on the oil delivery arm assembly, one end of the receiving and delivering oil pipeline is provided with a submersible pump and can be inserted into a tank opening of the railway oil tank vehicle, and the other end of the receiving and delivering oil pipeline is connected with a first end of the process pipeline; a second end of the process pipeline is connected with a first end of the collecting and delivering oil pipeline; and a second end of the collecting and delivering oil pipeline can be connected with an oil storage container.

[0007] Further, the oil delivery arm assembly comprises a first section arm, a second section arm and a third section arm connected in sequence; and the first section arm is rotatably arranged on the chassis through an oil delivery arm support.

[0008] Further, the receiving and delivering oil pipeline comprises a vertical pipe, and the submersible pump is arranged at an end of the vertical pipe.

[0009] Further, the process pipeline comprises a main oil delivery pump.

[0010] Further, the main oil delivery pump is a centrifugal pump.

[0011] Further, the process pipeline further comprises a receiving oil main oil line and a delivering oil main oil line, and the receiving oil main oil line and the delivering oil main oil line share the main oil delivery pump.

[0012] Further, the process pipeline further comprises a raffinate oil line, one end of the raffinate oil line is connected with a front end of the main oil delivery pump, and the other end of the raffinate oil line can be connected with the oil storage container.

[0013] Further, the raffinate oil line comprises an auxiliary pump.

[0014] Further, the auxiliary pump is a sliding vane pump.

[0015] Further, the collecting and delivering oil pipeline comprises an oil delivery rubber pipe and an oil delivery hose, the oil delivery hose has a plurality of oil delivery hoses connected in series through a plurality of three-way valves to form an integral whole; one end of the oil delivery rubber pipe is connected with the second end of the process pipeline, and the other end of the oil delivery rubber pipe is selectively connected with one of the plurality of three-way valves.

[0016] Compared with the prior art, the application can achieve at least one of the following beneficial effects:

[0017] (1) The application can realize both receiving and delivering oil by using the same set of equipment, receiving oil by the submersible pump and the main oil delivery pump under positive pressure, and delivering oil by using the main oil delivery pump to provide power, without the need to additionally set up a delivering oil equipment, thereby improving the receiving and delivering oil efficiency.

[0018] (2) The present application can avoid waste of raw materials and pollution of the environment by copying the pump extraction pipeline of the remaining oil.

[0019] (3) The present application realizes automatic positioning of the vertical pipe through the vertical pipe automatic centering device, further improves the oil receiving and sending efficiency, and reduces the requirement for control accuracy. Meanwhile, the automatic centering device can be folded and stored, and occupies small space.

[0020] The above technical solutions can be combined with each other in the present application to realize more preferred combination solutions. Other features and advantages of the present application will be described in the subsequent specification, and some advantages will become apparent from the specification, or will be understood by implementing the present application. The purposes and other advantages of the present application can be realized and obtained from the contents specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the application and are incorporated herein and constitute a part of the application. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the oil receiving and sending vehicle for railway oil tank car of the embodiment 1 of the present application;

[0023] Figure 2 It is a schematic diagram of the main body structure of the oil receiving and sending vehicle for railway oil tank car of the embodiment 1 of the present application;

[0024] Figure 3 It is a schematic diagram of the oil circuit principle of the oil receiving and sending vehicle for railway oil tank car of the embodiment 1 of the present application;

[0025] Figure 4 It is a schematic diagram of the structure of the process pipeline of the oil receiving and sending vehicle for railway oil tank car of the embodiment 1 of the present application;

[0026] Figure 5 It is a schematic diagram of the structure of the oil collecting and conveying pipeline of the oil receiving and sending vehicle for railway oil tank car of the embodiment 1 of the present application;

[0027] Figure 6 It is a schematic diagram of the structure of the vertical pipe automatic centering device of the oil receiving and sending vehicle for railway oil tank car of the embodiment 2 of the present application;

[0028] Figure 7 It is a side view of the first connecting seat of the embodiment 2 of the present application;

[0029] Figure 8 It is a front view of the first connecting seat of the embodiment 2 of the present application;

[0030] Figure 9 It is a top view of the first connecting seat of the embodiment 2 of the present application;

[0031] Figure 10 is along the direction of A-A Figure 8 is a sectional view along the direction of A-A

[0032] Figure 11 is a side view of the second connecting seat of the embodiment 2 of the present application.

[0033] Reference signs:

[0034] 10 - oil tank; 11 - tank mouth; 12 - submersible pump; 13 - standpipe; 100 - chassis; 20 - oil delivery arm assembly; 30 - oil receiving and delivering pipeline; 40 - process pipeline; 50 - oil collecting and delivering pipeline; 60 - reel;

[0035] 1 - mounting sleeve; 2 - connecting rod; 3 - guide rod; 31 - open end; 5 - first connecting seat; 51 - mounting plate; 52 - first side plate; 53 - first through hole; 54 - first limiting groove; 55 - second limiting groove; 56 - rotating groove; 57 - first spring; 58 - first rotating pin; 59 - mounting screw hole; 4 - second connecting seat; 41 - second side plate; 42 - third limiting groove; 43 - fourth limiting groove; 44 - second rotating pin. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present application will be described in detail below with reference to the drawings, which form a part of this application, and together with the embodiments of the present application, illustrate the principles of the present application, but are not intended to limit the scope of the present application.

[0037] Embodiment 1

[0038] One specific embodiment of the present application, as shown in Figs. 1-3, discloses an oil receiving and delivering vehicle for railway oil tank car. Figure 1 、 Figure 2 and Figure 3 Embodiment 1

[0039] The oil receiving and delivering vehicle for railway oil tank car of the present embodiment comprises a chassis 100, an oil delivery arm assembly 20, an oil receiving and delivering pipeline 30, a process pipeline 40 and an oil collecting and delivering pipeline 50. The oil delivery arm assembly 20, the process pipeline 40 and the oil collecting and delivering pipeline 50 are arranged on the chassis 100, the oil receiving and delivering pipeline 30 is arranged on the oil delivery arm assembly 20, and one end of the oil receiving and delivering pipeline 30 is provided with a submersible pump 12 which can be extended into the tank mouth 11 of the railway oil tank car. The other end of the oil receiving and delivering pipeline 30 is connected with the first end of the process pipeline 40; the second end of the process pipeline 40 is connected with the first end of the oil collecting and delivering pipeline 50; and the second end of the oil collecting and delivering pipeline 50 can be connected with an oil storage container.

[0040] The bottom frame 100 is a carrier of the loading equipment of the oil receiving and sending vehicle of the application, and is connected with the automobile beam through two longitudinal channel steels in a rigid connection. Thick wood is used as a damping material between the automobile beam and the longitudinal channel steels. A oil delivery arm support is arranged at each of the front and rear ends of the upper portion of the bottom frame 100. Stair supports are arranged at the two sides of the bottom frame 100, and are used for arranging a control box, an oil collecting and delivering pipeline 50 and part of a hydraulic system. The middle portion of the bottom frame 100 is used for arranging a pump and a process pipeline 40. A platform is arranged at the tail portion of the bottom frame 100, and is used for arranging a reel 60 in the oil collecting and delivering pipeline 50.

[0041] The oil delivery arm assembly 20 comprises a first arm, a second arm and a third arm which are sequentially connected. The first arm is rotatably arranged on the bottom frame 100 through the oil delivery arm support. The oil delivery arm assembly can adopt the structure in the prior art, and thus will not be described in detail here.

[0042] Referring to Figure 1 , Figure 2 and Figure 6 , the oil receiving and sending pipeline 30 is arranged on the oil delivery arm assembly 20. The oil receiving and sending pipeline 30 is provided with a vertical pipe 13 at the end thereof. The submersible pump 12 is arranged at the end of the vertical pipe 13. The cable pipe of the submersible pump 12 is led to the control box on the bottom frame 100 along the oil delivery arm assembly 20. The submersible pump 12 and the vertical pipe 13 can be extended into the oil tank 10 of the railway oil tank vehicle, so as to realize the oil receiving and sending from and to the railway oil tank vehicle.

[0043] The process pipeline 40 is arranged at the middle portion of the bottom frame 100. Referring to Figure 3 , Figure 4 , the process pipeline 40 comprises an oil receiving main oil circuit, which comprises a first three-way valve, a filter, a first pressure transmitter, a main oil delivery pump, a second pressure transmitter, a flow meter, a first ball valve, a first check valve, a third pressure transmitter, a second three-way valve and a self-sealing joint which are sequentially connected. The end of the oil receiving and sending pipeline 30 is connected with the first three-way valve. The self-sealing joint is used for connecting with the oil collecting and delivering pipeline 50.

[0044] The main oil delivery pump is a centrifugal pump. The centrifugal pump is installed on the bottom frame 100, and is connected with the power take-off of the engine of the oil receiving and sending vehicle. Since the centrifugal pump is heavy, arranging the centrifugal pump at the middle portion of the bottom frame 100 can make the oil receiving and sending vehicle more stable.

[0045] When the oil needs to be received, the oil in the oil tank 10 of the railway oil tank vehicle is introduced into the first three-way valve through the oil receiving and sending pipeline 30 under the action of the submersible pump 12 and the centrifugal pump, flows along the oil receiving main oil circuit to the oil collecting and delivering pipeline 50, and is finally delivered to the oil storage container.

[0046] The process piping 40 also includes a main oil supply line, which includes an oil pipe connecting the second three-way valve to the inlet of the filter, and an oil pipe connecting the outlet of the first check valve to the first three-way valve. The main oil supply line and the main oil receiving line share the first three-way valve, filter, first pressure transmitter, main oil pump, second pressure transmitter, flow meter, first ball valve, first check valve, third pressure transmitter, second three-way valve, and self-sealing connector.

[0047] When oil needs to be dispensed, the self-sealing joint connects to the oil storage container. Through the main oil pump or other power, the oil is fed from the second three-way valve to the filter inlet. Then the oil flows along the main oil receiving line to the first check valve, from the first check valve to the first three-way valve, and then through the oil receiving and dispensing pipeline 30 into the oil tank 10 of the railway tank car.

[0048] The receiving and dispatching oil car also has the function of delivering oil to railway tank cars in emergencies using external power or gravity flow. If there is no metering requirement, the oil delivery route can also bypass the metering oil circuit of the receiving and dispatching oil car, and the main oil delivery circuit can be directly connected to the inlet of the receiving and dispatching oil pipeline 30 to realize emergency gravity flow oil delivery.

[0049] See Figure 3 The process piping 40 also includes a residual oil circuit, one end of which is connected to the front end of the main oil pump, and the other end of which can be connected to an oil storage container. The residual oil circuit includes an auxiliary pump, preferably a vane pump. The auxiliary pump is used for residual oil backflow. The vane pump is powered by a hydraulic motor.

[0050] When using an auxiliary pump for pipeline residual oil back-extraction, the volume of residual oil in the pipeline is calculated. It can be determined that the volume of the receiving and dispatching oil pipelines 30 on the oil delivery arm, the pump unit on the base frame 100, and the process pipeline 40 is approximately 495L. If a rated flow rate of 15m³ / h is used... 3 A vane pump with a capacity of / h takes approximately 2 minutes to evacuate the residual oil from the pipeline.

[0051] See Figure 3 , Figure 5 The oil collection and delivery pipeline 50 includes oil delivery hoses and oil delivery flexible hoses. Multiple flexible hoses are connected in series via multiple three-way valves. One end of the oil delivery hose is connected to the second end of the process pipeline 40, and the other end can be selectively connected to one of the multiple three-way valves. The oil collection and delivery pipeline 50 is mainly used for connecting oil receiving and dispatching vehicles to field oil depots. During oil receiving, the system operates under positive pressure; during oil dispatch, the oil source arrives at the oil collection and delivery pipeline 50 under positive pressure.

[0052] The joint of the oil delivery hose is in the form of a plug-in adapter. When the oil receiving and delivering vehicle is moving, the oil delivery hose can move with it, and does not need to be detached from the pipeline. Only the connection between the oil delivery hose and the oil delivery hose needs to be disconnected. The connection interface with the oil delivery hose uses a dry self-sealing interface, which can meet the requirement of no oil leakage during disconnection. The connection between the oil delivery hose and the three-way joint, and the connection between the oil outlet of the process pipeline 40 and the oil delivery hose all use dry self-sealing valves.

[0053] Preferably, the oil delivery hoses are connected by DN150 plug-in adapters, and the oil delivery hoses and the oil delivery hose are connected by DN150 dry valves.

[0054] The oil delivery hose is used for connecting the oil outlet of the process pipeline 40 and the oil collection and delivery pipeline 50. The oil delivery hose is a light weight oil suction and delivery hose, which is made of flanges, retaining rings, metal sleeves, cold-drawn metal wires, and polypropylene terephthalate fabric armor. Compared with rubber hoses, it has the characteristics of light weight, small bending radius, good bending flexibility, and easy use, and is suitable for use in ports, oil refineries, and oil depots, and can deliver gasoline, kerosene, diesel, oil, heavy oil, or machine oil.

[0055] The oil delivery hose has steel wire winding inside, and has good conductivity.

[0056] The two ends of the oil delivery hose are connected by flanges, and each end of the oil delivery hose is equipped with a set of dry self-sealing joints. The oil delivery hose and the dry valve are connected by flanges, which is convenient for disassembly and maintenance.

[0057] The oil delivery hose is a flat polyurethane oil delivery hose, which is made by one-step molding and co-extrusion process, and is composed of a TPU inner rubber layer, a fiber reinforced layer, and a TPU outer rubber layer. The fiber layer is added with conductive metal wires to solve the problem of static electricity generated during oil delivery, completely guarantee the safety of oil delivery and high efficiency of oil delivery, and can deliver various media such as gas, water, and oil without pollution to the delivered medium.

[0058] The two ends of the oil delivery hose are connected by aluminum alloy plug-in adapters. The plug-in adapters can be quickly disassembled, and the connection between the oil delivery hose and the plug-in adapter is fixed by two clamps to increase the pressure bearing capacity of the hose.

[0059] The dry valve is used for connecting with the oil delivery hose, and the oil is automatically sealed in the pipeline during disconnection. The dry valve adopts DN150 European standard, and is used in combination with male and female ends. The male and female ends are used in combination, the male end has six equal grooves, the female end has six flanges, and the two are connected and rotated. At this time, the flanges of the male end are buckled with the end cover of the female end, and the connection between the male end and the female end is realized.

[0060] The oil collection and delivery pipeline 50 also includes a reel 60. The reel 60 can wind and store the oil delivery hose, which is convenient for transportation.

[0061] Compared with the prior art, the oil receiving and sending vehicle for the railway oil tank vehicle provided by the embodiment has the functions of receiving the railway oil tank vehicle group, sending oil to the railway oil tank vehicle by using external power or self-flow mode, and returning residual oil, and the efficiency of oil receiving is effectively improved by adopting the submersible pump 12 to realize the positive pressure delivery of the medium, the main oil pump to deliver oil at a long distance, and the auxiliary pump to return residual oil.

[0062] Taking the new light oil tank vehicle G70 as an example, the volume of the vehicle is 70 cubic meters, the submersible pump 12 with a rated flow of 80 m 3 / h and the oil pump with a rated flow of 160 m 3 / h are adopted to realize the positive pressure forced unloading, and the theoretical value of the unloading time of a single tank is 53 minutes. The control of the unloading constant pressure and constant flow conditions can be realized by controlling the rotating speed of the oil pump and adjusting the opening of the pump outlet electric valve.

[0063] Embodiment 2

[0064] The embodiment 2 relates to an oil receiving and sending vehicle for a railway oil tank vehicle, and further comprises a vertical pipe automatic centering device on the basis of the embodiment 1, as shown in Figure 6 .

[0065] The vertical pipe automatic centering device of the embodiment, as shown in Figure 6 , comprises a mounting sleeve 1, a connecting rod 2 and a guide rod 3. The mounting sleeve 1 is used to be sleeved on the vertical pipe 13 of the oil receiving and sending pipeline and is located above the submersible pump 12 arranged at the end of the vertical pipe 13. A plurality of first connecting seats 5 are uniformly distributed on the outer circumferential surface of the mounting sleeve 1, each first connecting seat 5 is connected with one end of one connecting rod 2, the other end of each connecting rod 2 is connected with the middle part of one guide rod 3 through one second connecting seat 4, the guide rod 3 is in an inclined state when working, and the lower ends of all guide rods 3 intersect at one point and are adsorbed together to form a multi-pyramidal guide bracket.

[0066] The mounting sleeve 1 can reciprocate relative to the vertical pipe 13. The connecting rod 2 can rotate relative to the first connecting seat 5 and the mounting sleeve 1 between the horizontal position and the vertical position, and can be locked in the horizontal position and the vertical position. The guide rod 3 and the second connecting seat 4 can rotate relative to the connecting rod 2 and can be locked in the inclined position and the vertical position. When in the working state, the connecting rod 2 is in the horizontal position and the guide rod 3 is in the inclined position; when in the storage state, the connecting rod 2 and the guide rod 3 are in the vertical position.

[0067] Further, the guide rods 3 include open ends 31 rotatable relative to the rod bodies. The bottoms of the open ends 31 are provided with magnetic elements. When in the working state, the guide rods 3 are in the inclined state, the maximum distance between the top ends of the guide rods 3 is greater than the diameter of the tank mouth 11 of the oil tank car 10, and the lower ends of all the guide rods 3 intersect at a point and are attracted to each other. At this time, due to the torque formed by the attractive force of the magnetic elements on the open ends 31 being greater than the torque formed by the gravity of the open ends 31, the guide rods 3 remain in the straight state, forming a multi-prism-shaped guide support, which can stably maintain the multi-prism-shaped state during the lowering of the submersible pump 12 and will not break due to bumps, so that automatic positioning can be achieved through the guide rods 3, and automatic centering and protection effects are achieved.

[0068] At the same time, due to the torque formed by the attractive force of the magnetic elements on the open ends 31 being less than the torque formed by the gravity of the submersible pump 12 and the vertical pipe 13 on the open ends 31. Therefore, after the multi-prism-shaped guide support formed by the guide rods 3 is clamped to the tank mouth 11 during the lowering of the submersible pump 12, the open ends 31 can overcome the magnetic force and rotate outward to form a first channel under the action of the gravity of the submersible pump 12 and the vertical pipe 13, and this process does not need to introduce a new drive.

[0069] In addition, when the first channel is opened and the open ends 31 are in the free hanging state (at this time, the guide rods 3 are in the broken line state), the torque formed by the attractive force of the magnetic elements on the open ends 31 is less than the torque formed by the gravity of the open ends 31. Therefore, when the submersible pump 12 is lowered into the oil tank car for operation, the open ends 31 will not rotate inward under the action of the magnetic force, and the submersible pump 12 cannot be smoothly recovered after the operation is completed.

[0070] The oil receiving and delivering vehicle for the railway oil tank car in the embodiment can automatically center the vertical pipe 13 during the oil receiving and delivering operation. During the operation, the movement of the oil receiving and delivering pipeline is controlled, so that the projection of the intersection point of the lower ends of the guide rods 3 on the horizontal plane is within the range of the tank mouth 11 of the oil tank car 10. Compared with the case in the prior art that the projection of the entire submersible pump 12 needs to be located within the range of the tank mouth 11, the scheme of the embodiment realizes the automatic positioning of the oil receiving and delivering pipeline by using the inclined multiple guide rods 3, and the requirement for the control accuracy of the oil receiving and delivering pipeline is obviously reduced. During the lowering of the submersible pump 12, the single guide rod 3 first contacts the tank mouth 11, and damage to the submersible pump 12 due to bumps can be avoided. Further, during the continuous lowering of the submersible pump 12, the axis of the vertical pipe 13 of the oil receiving and delivering pipeline is automatically adjusted to coincide with the center line of the tank mouth 11 by using the inclined guide rods 3 and the tank mouth 11, so that the position of the submersible pump 12 can be accurately positioned, the submersible pump 12 can be automatically dropped into the oil collecting pit at the bottom of the oil tank car 10, and the residual amount after unloading can be reduced.

[0071] Specifically, the mounting sleeve 1 is a rigid annular member, the inner diameter of which is greater than the outer diameter of the vertical pipe 13 and smaller than the outer diameter of the electric submersible pump 12. Since the inner diameter of the mounting sleeve 1 is greater than the outer diameter of the vertical pipe 13, the mounting sleeve 1 can slide up and down relative to the vertical pipe 13. Meanwhile, since the inner diameter of the mounting sleeve 1 is smaller than the outer diameter of the electric submersible pump 12, the mounting sleeve 1 cannot fall off the bottom of the vertical pipe 13. When the oil truck is working, the vertical pipe 13 is in a vertical state, and the mounting sleeve 1 is located at the top of the electric submersible pump 12 under the action of gravity.

[0072] The outer circumferential surface of the mounting sleeve 1 is circumferentially provided with a plurality of mounting bases for fixedly mounting the first connecting seat 5. The structure of the first connecting seat 5 is shown in Figures 7-10 The mounting plate 51 is a rectangular plate, and mounting screw holes 59 are arranged on both sides of the mounting plate 51 for fixedly connecting to the mounting bases of the mounting sleeve 1. Two first side plates 52 are fixedly arranged on the mounting plate 51, and the two first side plates 52 are arranged in parallel and spaced apart, forming a rotating groove 56 between the two first side plates 52, in which the connecting rod 2 can rotate. First through holes 53 are arranged on the two first side plates 52 correspondingly for mounting the first rotating pin 58. The first through hole 53 on one first side plate 52 is a stepped hole, and the first spring 57 is sleeved on the first rotating pin 58 and abuts against the stepped surface of the first through hole 53 at one end. The first end of the connecting rod 2 is sleeved on the first rotating pin 58, and the other end of the first spring 57 abuts against the side surface of the connecting rod 2, pushing the connecting rod 2 to abut against the first side plate 51 on the opposite side of the first spring 57.

[0073] Referring to Figure 7 , Figure 8 , Figure 9 and Figure 10 , the first side plate 51 on the opposite side of the first spring 57 is provided with a first limiting groove 54 and a second limiting groove 55. The first limiting groove 54 and the second limiting groove 55 are both in communication with the rotating groove 56. The length direction of the first limiting groove 54 is perpendicular to the mounting plate 51, and the length direction of the second limiting groove 55 is parallel to the mounting plate 51. In the working state, the first limiting groove 54 is in a horizontal state, and the second limiting groove 55 is in a vertical upward state.

[0074] The first end of the connecting rod 2 is sleeved on the first rotating pin 58, and the connecting rod 2 can move back and forth in the rotating groove 56. When the connecting rod 2 moves to the horizontal position or the vertical position, it can automatically slide into the first limiting groove 54 or the second limiting groove 55 under the action of the first spring 57, thereby achieving the locking of the connecting rod 2. When it is necessary to rotate the connecting rod 2, the connecting rod 2 can be manually pushed out of the first limiting groove 54 or the second limiting groove 55.

[0075] The connecting rods 2 are at least three, extending along the radial direction of the mounting sleeve 1 and being evenly distributed in the circumferential direction. The connecting rods 2 are used to connect the mounting sleeve 1 and the guide rods 3, and define the relative position between the guide rods 3 and the submersible pump 12 through the mounting sleeve 1, so that the submersible pump 12 is located in the multi-prism frame formed by the plurality of guide rods 3.

[0076] The structure of the second connecting seat 4 is shown in Figure 11 , which is fixedly connected with the middle part of the guide rod 3 and becomes an integral part, as shown in Figure 6 .

[0077] Referring to Figure 11 , the structure of the second connecting seat 4 is similar to that of the first connecting seat 5, including a second side plate 41, a second spring (not shown in the figure) and a second rotating pin 44. The third limiting groove 42 and the fourth limiting groove 43 are arranged on one side of the second side plate 41. In the working state, the third limiting groove 42 extends in the horizontal direction, and the length direction of the fourth limiting groove 43 is parallel to the direction of the guide rod 3.

[0078] The second end of the connecting rod 2 is sleeved on the second rotating pin 44 and can rotate between the two second side plates 41. At the same time, under the action of the second spring, when it is rotated to the positions corresponding to the third limiting groove 42 and the fourth limiting groove 43, it will be automatically locked.

[0079] In the working state, the first end of the connecting rod 2 is locked in the first limiting groove 54, and the second end is locked in the third limiting groove 42, and is kept extending in the horizontal direction. The guide rod 3 is kept in the inclined state under the action of the second connecting seat 4. At this time, the plurality of guide rods 3 form a multi-prism frame and can be stably locked on the tank mouth 11.

[0080] When it is needed to be stored, first, the position of the mounting sleeve 1 on the standpipe 13 is adjusted to avoid interference between the guide rod 3 and the submersible pump 12 when the guide rod 3 is folded. Then, the two ends of the connecting rod 2 are manually pushed out, and the connecting rod 2 is rotated, so that the first end of the connecting rod 2 is locked in the second limiting groove 55, and the second end is locked in the fourth limiting groove 43. Thus, the connecting rod 2 and the guide rod 3 are parallel to the standpipe 13, which is convenient for storage.

[0081] Compared with the prior art, the automatic centering device for the standpipe provided in the embodiment realizes automatic positioning of the oil receiving and discharging pipeline by using the conical surface of the guide rod 3, which reduces the requirement for the control accuracy of the oil receiving and discharging pipeline. At the same time, by using the cooperation between the guide rod 3 and the tank mouth 11, the axis of the standpipe 13 of the oil receiving and discharging pipeline is automatically adjusted to be coincident with the center line of the tank mouth 11, which can accurately position the submersible pump 12, so that the submersible pump 12 automatically falls into the oil collecting pit at the bottom of the tank car, and the residual amount after unloading is avoided to be too much.

[0082] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A receiving and dispensing car for a railway tank car, characterized by, The device comprises a chassis, an oil delivery arm assembly, an oil receiving and delivering pipeline, a process pipeline and an oil collecting and delivering pipeline; the oil delivery arm assembly, the process pipeline and the oil collecting and delivering pipeline are arranged on the chassis, the oil receiving and delivering pipeline is arranged on the oil delivery arm assembly, one end of the oil receiving and delivering pipeline is provided with a submersible pump and can be extended into a tank opening of the railway oil tank car, the other end of the oil receiving and delivering pipeline is connected with a first end of the process pipeline; a second end of the process pipeline is connected with a first end of the oil collecting and delivering pipeline; a second end of the oil collecting and delivering pipeline can be connected with an oil storage container.

2. The transfer car for a railroad tank car of claim 1, wherein, The oil delivery arm assembly comprises sequentially connected first, second and third arm sections; the first arm section is rotatably arranged on the chassis through an oil delivery arm support.

3. The transfer car for a railroad tank car of claim 2, wherein, The oil receiving and delivering pipeline comprises a vertical pipe, and the submersible pump is arranged at an end of the vertical pipe.

4. The transfer car for a railroad tank car of claim 1 wherein, The process pipeline comprises a main oil delivery pump.

5. The transfer car for a railroad tank car of claim 4, wherein, The main oil delivery pump is a centrifugal pump.

6. The transfer car for a railroad tank car of claim 5, wherein, The process pipeline further comprises an oil receiving main oil line and an oil delivering main oil line, and the oil receiving main oil line and the oil delivering main oil line share the main oil delivery pump.

7. The transfer car for a railway tank car according to any one of claims 4-6, characterized in that, The process pipeline further comprises a raffinate oil line, one end of the raffinate oil line is connected with a front end of the main oil delivery pump, and the other end of the raffinate oil line can be connected with the oil storage container.

8. The transfer car for a railroad tank car of claim 7, wherein, The raffinate oil line comprises an auxiliary pump.

9. The transfer car for a railroad tank car of claim 8, wherein, The auxiliary pump is a sliding vane pump.

10. The transfer car for a railroad tank car of claim 1, wherein, The oil collecting and delivering pipeline comprises an oil delivery rubber pipe and a plurality of oil delivery hoses, the plurality of oil delivery hoses are connected in series through a plurality of three-way valves to form an integral whole; one end of the oil delivery rubber pipe is connected with the second end of the process pipeline, and the other end of the oil delivery rubber pipe is selectively connected with one of the plurality of three-way valves.

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