Long tube trailer with cooling device

Abstract

A long tube trailer with a cooling device belongs to the field of compressed gas transportation, including a trailer chassis, a tube bundle container arranged on the trailer chassis, and a gas cylinder group positioned in the tube bundle container by means of a front support plate and a rear support plate, the front and rear ends of the tube bundle container are respectively provided with a front safety compartment and a rear operation compartment, the front end of the gas cylinder is tilted upward by 3-6 degrees, the front support plate and the rear support plate are arranged perpendicularly to the center line of the cylinder body of the gas cylinder, a cooling device positioned on the air inlet pipeline of the gas cylinder is arranged at the bottom of the front end of the tube bundle container, and a negative pressure fan is arranged at the top of the rear end of the tube bundle container. By adding a cooling device and the overall auxiliary heat dissipation structure of the trailer for improvement, the temperature of the compressed gas is lowered before entering the gas cylinder, and at the same time, with the help of the improved auxiliary ventilation and heat dissipation structure, a large amount of heat generated during the filling process of the gas cylinder is timely dissipated, solving the technical problems of excessive temperature and pressure in the cylinder and relatively small gas volume when filling is stopped.

Description

Technical Field

[0001] The invention belongs to the field of compressed gas transportation, and in particular relates to a long tube trailer with a cooling device. Background Art

[0002] The long-tube trailer is a mobile pressure vessel used to transport compressed gas. At present, clean and efficient green energy such as natural gas and hydrogen are increasingly being used more widely in China. In the past, substation vehicles used large-volume seamless steel gas cylinders with a large overall weight. Therefore, under the condition that road transportation has restrictions on the total weight of the trailer, only by reducing the weight of the cylinder can the weight of the transported gas be increased.

[0003] Wrapped bottles with relatively low weight have come into the sight of trailer transportation technology. However, when wrapped bottles are used, the wrapping layer and the box side walls and tarpaulin that protect the wrapping layer are not conducive to the timely dissipation of the large amount of heat generated during the inflation process; under the premise of limiting the pressure in the bottle during transportation, the higher the temperature of the bottle, the less gas is filled, which seriously affects the transportation efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a long-tube trailer with a cooling device. By adding a cooling device and an overall auxiliary heat dissipation structure of the trailer for improvement, the temperature of the compressed gas is lowered before entering the gas cylinder. At the same time, with the help of the improved auxiliary ventilation and heat dissipation structure, a large amount of heat generated during the inflation of the gas cylinder is dissipated in time, thereby solving the technical problems of excessively high temperature and pressure in the cylinder and relatively small gas volume when filling is stopped, thereby improving the transportation efficiency of the long-tube trailer.

[0005] The technical solution adopted by the present invention is: a long tube trailer with a cooling device, comprising a trailer chassis, a tube bundle container arranged on the trailer chassis, and a gas cylinder group positioned in the tube bundle container by means of a front support plate and a rear support plate, the front and rear ends of the tube bundle container are respectively provided with a front safety warehouse and a rear operation warehouse, the front end of the gas cylinder is tilted upward by 3-6 degrees, the front support plate and the rear support plate are arranged perpendicular to the center line of the cylinder body of the gas cylinder, a cooling device positioned on the air inlet pipeline of the gas cylinder is arranged at the bottom of the front end of the tube bundle container, a negative pressure fan is arranged at the top of the rear end of the tube bundle container, the cooling device includes a heat exchanger arranged side by side on a support frame in the trailer chassis, and the coolant inlet pipe and the outlet pipe of the heat exchanger are connected to the coolant refrigeration device of the gas filling station by means of quick disassembly and assembly components when loading and unloading gas.

[0006] Rotating blades are arranged side by side on the left and right sides of the tube bundle container by means of a rotating shaft, a gear is arranged on the top of the rotating shaft, racks matching the gears are arranged on the top of the left and right sides of the tube bundle container by means of guide rails, and one end of the rack is connected to the air push rod.

[0007] The left and right sides of the tube bundle container are provided with lifting doors with upward rotation freedom by means of a rotating shaft, and the two sides of the lifting doors form an opening and closing structure by means of gas push rods.

[0008] The top of the tube bundle container is provided with an accordion structure plate by means of a linear guide mechanism, the front end of the accordion structure plate is fixed to the front end of the top of the tube bundle container, and the free end forms an opening and closing structure on the linear guide mechanism by means of a driving mechanism.

[0009] The driving mechanism includes a reel arranged at the front and rear ends of the top of the tube bundle container by means of a rotating shaft, a reel arranged on the reel, and a driving motor connected to the rotating shaft, and the free end of the reel is connected to the free end of the accordion structural plate.

[0010] The accordion structure plate includes a group of long strip single plates connected in series by means of a hinge structure. The linear guide mechanism is a guide rail and a matching pulley arranged on both sides of the top of the tube bundle container. The pulleys are arranged at intervals on both sides of the hinge of the long strip single plates.

[0011] The beneficial effects produced by the use of the present invention are as follows: by adding a cooling device and improving the overall auxiliary heat dissipation structure of the trailer, the temperature of the compressed gas is lowered before entering the gas cylinder. At the same time, with the help of the improved auxiliary ventilation and heat dissipation structure, a large amount of heat generated during the filling process of the gas cylinder is promptly dissipated, thereby solving the technical problems of excessively high temperature and pressure in the cylinder and relatively small gas volume when filling is stopped, and improving the transportation efficiency of the long-tube trailer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the installation of the gas cylinder;

[0014] Figure 3 is the closed state diagram of the rotating blade;

[0015] Figure 4 is the diagram of the rotating blade in the open state;

[0016] Figure 5 This is the opening state diagram of the lift door;

[0017] Figure 6 This is the opening state diagram of the accordion structure panel;

[0018] Figure 7 It is a structural diagram of the heat exchanger. DETAILED DESCRIPTION

[0019] See attached Figure 1-7, a long tube trailer with a cooling device, comprising a trailer chassis 1, a tube bundle container 2 arranged on the trailer chassis 1, and 3 groups of gas cylinders positioned in the tube bundle container 2 by means of a front support plate 4-1 and a rear support plate 4-2, the front and rear ends of the tube bundle container 2 are respectively provided with a front safety compartment 5 and a rear operation compartment 6, the front end of the gas cylinder 3 is tilted upward by 3-6 degrees, the front support plate 4-1 and the rear support plate 4-2 are arranged perpendicular to the center line of the bottle body of the gas cylinder 3, a cooling device positioned on the air inlet pipeline of the gas cylinder 3 is provided at the bottom of the front end of the tube bundle container 2, and a negative pressure fan 7 is provided at the top of the rear end of the tube bundle container 2, the cooling device comprises a heat exchanger 8 arranged side by side on a support frame in the trailer chassis 1, and the coolant inlet pipe 15-1 and the outlet pipe 15-2 of the heat exchanger 8 are connected to the coolant refrigeration device of the gas filling station by means of quick disassembly and assembly components when loading and unloading gas. The rear operation compartment 6 is provided with an oil inlet pipeline and an air inlet pipeline that cooperate with the gas cylinder 3. The air inlet of the air inlet pipeline of the gas cylinder 3 is arranged in the rear operation compartment 6, a heat exchanger 8 is arranged in the middle part of the air inlet pipeline of the gas cylinder 3, and the rear section of the air inlet pipeline of the gas cylinder 3 is connected to the front air inlet of the gas cylinder 3 through a safety relief device arranged in the front safety compartment 5.

[0020] The overall structure of the present invention is assembled from a chassis 1 and a tube-bundle container 2, and the tube-bundle container 2 is fixed to the chassis 1 by four corner fittings of the container. The container is equipped with a gas cylinder 3, a front safety compartment 5, and a rear operation compartment 6. The mouth of the gas cylinder 3 is processed with internal and external threads, and the external threads at both ends are connected with the mounting flange by threads. The mounting flange is fixed to the front support plate 4-1 and the rear support plate 4-2 at both ends of the frame by bolts; the internal threads of the mouth of the bottle are installed with screw plugs, and pipe fittings are connected to the screw plugs. The front safety compartment 5 is provided with a safety discharge device, and the rear operation compartment 6 is provided with a pressure gauge and a quick-release connector positioned in the air intake pipeline.

[0021] The tilted setting of the gas cylinder 3 can save the traditional hydraulic lifting mechanism, which not only saves costs but also greatly reduces weight, while providing sufficient space for the cooling device. The tilted structure is realized by using the front support plate 4-1 and the rear support plate 4-2 to tilt the gas cylinder 3 forward by 3-6 degrees. The front end of the tube bundle container 2 is provided with a reinforced rectangular tube and supported on the main frame of the box body. The front support plate 4-1 is a movable plate connected to a circle of steel plates welded on the reinforced rectangular tube. The rear support plate 4-2 is directly welded to the reinforced rectangular tube of the rear operating compartment 6.

[0022] The tube bundle container 2 is mainly composed of a frame and a skin. The frame is made of rectangular tubes as a longitudinal and transverse structure and welded with corner pieces at four corners, and is mainly used to support and transport gas cylinders 3; the four walls of the box are covered with thin plates to prevent the wrapped bottles from being exposed to sunlight or rain and aging quickly, and to block the impact of sand and stones.

[0023] Gas cylinder 3 uses a large-volume wrapped gas cylinder, the main structure of which is a steel liner wrapped with a fiber composite material. The wrapped bottle body of the same volume is more than 30% lighter than the steel bottle body; for the same bottle weight, the volume of the wrapped bottle is more than 37% larger than that of the steel bottle.

[0024] The use of the heat exchanger 8 can effectively dissipate the heat generated during the filling process, thereby giving full play to the filling capacity of the wrapped bottle, improving the filling efficiency, and increasing the loading gas volume by more than 8% after cooling. The heat exchanger 8 is fixed on the supporting frame of the trailer chassis 1.

[0025] Working process of heat exchanger 8: When the long-tube trailer arrives at the gas station for refueling, the compressed gas to be added enters the heat exchanger 8 in two groups from the rear operating chamber 6. At the same time, the coolant provided by the gas station begins to circulate and be discharged in the heat exchanger 8 (the coolant can be water or other low-temperature media). The compressed gas is cooled by about 20 degrees Celsius through the heat exchanger 8 and then enters the large-volume wrapped gas cylinder from the front safety chamber 5.

[0026] Principle of heat exchanger 8: Taking 20 degrees Celsius 19MPa natural gas as an example, through THERMO calculation, the pressure increases by 1.4MPa from 20 degrees Celsius to 30 degrees Celsius. After calculation, the vehicle will carry 360 standard cubic meters less gas if the temperature increases by 10 degrees Celsius. If heat exchanger 8 is used, the average temperature will drop by 20 degrees Celsius. It can effectively reduce the pressure increased by the temperature increase, increase the filling volume by about 10% or more, and improve transportation efficiency. The wrapped bottle station with heat exchanger 8 has a 40% to 50% higher bulk density than the steel bottle station.

[0027] See attached Figure 3-4 , which is a first embodiment of the side wall ventilation of the tube bundle container 2, the left and right sides of the tube bundle container 2 are provided with rotating blades 9 in parallel by means of a rotating shaft, a gear is provided at the top of the rotating shaft, and the tops of the left and right sides of the tube bundle container 2 are provided with racks 10 matched with the gears by means of guide rails, and one end of the rack 10 is connected to a gas push rod 11.

[0028] See attached Figure 5 , which is a second embodiment of the side wall ventilation of the tube bundle container 2, the left and right sides of the tube bundle container 2 are provided with lift doors 12 with upward rotation freedom by means of a rotating shaft, and the two sides of the lift doors 12 form an opening and closing structure by means of gas push rods 11.

[0029] See attached Figure 6The top of the bundle container 2 is provided with an accordion structure plate 14 by means of a linear guide mechanism 13. The front end of the accordion structure plate 14 is fixed to the front end of the top of the bundle container 2, and the free end forms an opening and closing structure on the linear guide mechanism 13 by means of a driving mechanism. The driving mechanism includes a reel 17 provided at the front and rear ends of the top of the bundle container 2 by means of a rotating shaft, a reel 16 provided on the reel 17, and a driving motor connected to the rotating shaft. The free end of the reel 16 is connected to the free end of the accordion structure plate 14. The accordion structure plate 14 includes a group of long strip single plates 14-1 connected in series by means of a hinge structure. The linear guide mechanism 13 is a guide rail and a matching pulley 13-1 provided on both sides of the top of the bundle container 2. The pulley 13-1 is provided at intervals on both sides of the hinge of the long strip single plate 14-1.

Claims

1. A long tube trailer with a cooling device, comprising a trailer chassis (1), a tube bundle container (2) arranged on the trailer chassis (1), and a group of gas cylinders (3) positioned in the tube bundle container (2) by means of a front support plate (4-1) and a rear support plate (4-2), wherein the front and rear ends of the tube bundle container (2) are respectively provided with a front safety compartment (5) and a rear operation compartment (6), characterized in that: The front end of the gas cylinder (3) is tilted upward by 3-6 degrees, and the front support plate (4-1) and the rear support plate (4-2) are arranged perpendicular to the center line of the gas cylinder (3); a cooling device positioned on the air inlet pipeline of the gas cylinder (3) is provided at the bottom of the front end of the tube bundle container (2), and a negative pressure fan (7) is provided at the top of the rear end of the tube bundle container (2), the cooling device includes a heat exchanger (8) arranged side by side on a support frame in the trailer chassis (1), and the coolant inlet pipe (15-1) and the coolant outlet pipe (15-2) of the heat exchanger (8) are connected to the coolant refrigeration device of the gas filling station by means of quick disassembly components when loading and unloading gas; The top of the tube bundle container (2) is provided with an accordion structure plate (14) by means of a linear guide mechanism (13); the front end of the accordion structure plate (14) is fixed to the front end of the top of the tube bundle container (2), and the free end forms an opening and closing structure on the linear guide mechanism (13) by means of a driving mechanism; Rotating blades (9) are arranged side by side on the left and right sides of the tube bundle container (2) by means of a rotating shaft, a gear is arranged at the top of the rotating shaft, and racks (10) cooperating with the gear are arranged at the top of the left and right sides of the tube bundle container (2) by means of guide rails, and one end of the rack (10) is connected to a gas push rod (11).

2. The long tube trailer with a cooling device according to claim 1, characterized in that: Lifting doors (12) with upward rotational freedom are arranged on the left and right sides of the tube bundle container (2) by means of a rotating shaft, and both sides of the lifting door (12) form an opening and closing structure by means of gas push rods (11).

3. The long tube trailer with a cooling device according to claim 1, characterized in that: The driving mechanism comprises a reel (17) arranged at the front and rear ends of the top of the tube bundle container (2) by means of a rotating shaft, a reel (16) arranged on the reel (17), and a driving motor connected to the rotating shaft, wherein the free end of the reel (16) is connected to the free end of the accordion structural plate (14).

4. The long tube trailer with a cooling device according to claim 1, characterized in that: The accordion structure plate (14) comprises a group of long strip single plates (14-1) connected in series by means of a hinge structure, and the linear guide mechanism (13) comprises guide rails and matching pulleys (13-1) arranged on both sides of the top of the tube bundle container (2), and the pulleys (13-1) are arranged at intervals on both sides of the hinge of the long strip single plates (14-1).

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