Vehicle-mounted LNG gas cylinder convenient for gas filling and use method of vehicle-mounted LNG gas cylinder

Abstract

The invention provides a vehicle-mounted LNG gas cylinder facilitating gas filling and a using method thereof, and relates to the technical field of vehicle-mounted LNG gas cylinders, the vehicle-mounted LNG gas cylinder comprises an anti-theft box, and two gas filling pipes are symmetrically arranged in the anti-theft box; a blocking cover plate is assembled in an opening of the anti-theft box in a sliding mode, a knob shaft is rotationally installed on the blocking cover plate in a penetrating mode, two U-shaped positioning pieces are symmetrically installed on the outer side of the blocking cover plate in a sliding mode in a spring pushing mode, and the U-shaped positioning pieces are matched with the vertical side wall of the anti-theft box in a penetrating and inserting mode; two pipe covers are symmetrically welded to the inner side of the plug cover plate, and when the plug cover plate is positioned in the closed state of the plug covers, the two pipe covers are correspondingly matched with the opening parts of the head ends of the two gas filling pipes in a sleeving and inserting mode; two swing rods are symmetrically welded to the periphery of the knob shaft. And an L-shaped locking plate is integrally formed on the limiting plate. The pipe cover is sleeved and covered on the head end opening of the gas filling pipe, so that the phenomenon that the head end opening is exposed for a long time due to lack of shielding, dust is easy to accumulate, and the connection sealing performance of the gas filling gun and the gas filling pipe is influenced can be avoided.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted LNG cylinder technology, and in particular to a vehicle-mounted LNG cylinder that is easy to refuel and its usage method. Background Technology

[0002] The application of LNG in the commercial vehicle sector is becoming increasingly widespread. As a core component for storing LNG, the performance of onboard LNG cylinders directly affects the vehicle's range, operational efficiency, and safety. "Convenience of refueling," as a key requirement in the use of LNG cylinders, has become an important direction for current industry optimization and upgrading.

[0003] To prevent the LNG stored in vehicle-mounted LNG cylinders from being stolen or maliciously discharged, most are equipped with anti-theft boxes. The refueling hose on the vehicle-mounted LNG cylinder is concealed within the anti-theft box, which is equipped with an anti-theft box cover. In addition, to prevent dust or impurities from accumulating at the opening of the refueling hose, it is usually equipped with a pipe cap. When refueling the vehicle-mounted LNG cylinder through the refueling hose, it is necessary to open the pipe cap and the box cover. However, the opening and closing of the box cover and the pipe cap before and after the refueling operation need to be performed manually step by step, which is cumbersome and inefficient, and will indirectly reduce the refueling efficiency of the vehicle-mounted LNG cylinder. Summary of the Invention

[0004] In view of this, the present invention provides a vehicle-mounted LNG cylinder that is easy to refuel and a method for using it, so as to solve the problem that the opening and closing of the cylinder cover and the opening and closing of the pipe cover before and after the refueling operation are cumbersome and inefficient and require manual step-by-step operation.

[0005] The technical solution proposed in this invention is: a vehicle-mounted LNG cylinder that is easy to refuel and its usage method, wherein: The vehicle-mounted LNG cylinder for easy refueling includes an anti-theft box, inside which two refueling pipes are symmetrically arranged. A cover plate is slidably fitted into the opening of the anti-theft box, and a torsion shaft is rotatably mounted through the cover plate. Two U-shaped positioning pieces are symmetrically slidably mounted on the outside of the cover plate by means of spring push, and the U-shaped positioning pieces are inserted into the vertical side wall of the anti-theft box. Two pipe caps are symmetrically welded to the inside of the cover plate. When the cover plate is positioned in the closed state, the two pipe caps are fitted into the openings of the two refueling pipes. The outer circumference of the torsion shaft is symmetrically welded with... There are two swing rods, and the two swing rods are rotatably connected to two U-shaped positioning parts by connecting rods; the U-shaped positioning parts are welded with limit plates, and the limit plates are integrally formed with L-shaped locking plates; a T-shaped mounting block and a rectangular locking plate are welded to the outer side of one vertical side wall of the anti-theft box, and a lock is fixedly installed on the T-shaped mounting block. When the cover plate is positioned in the closed state, the first end of the L-shaped locking plate is in contact with the bottom side of the rectangular locking plate, and the vertical locking shaft that is freely movable on the U-shaped locking hook of the lock passes through the first end of the L-shaped locking plate and the rectangular locking plate in sequence and is inserted into the lock hole of the lock.

[0006] Furthermore, two sets of mounting lugs are symmetrically welded to the outer side of the cover plate, and two U-shaped positioning parts are corresponding to the two sets of mounting lugs and slide through them. A spring that pushes the U-shaped positioning member is mounted on the horizontal side shaft of the U-shaped positioning member and is compressed and clamped between the limiting plate and the mounting lug.

[0007] Furthermore, a knob is welded to the first end of the rotary shaft.

[0008] Furthermore, it also includes the LNG cylinder body, with the gas filling pipe welded to and connected to the LNG cylinder body.

[0009] Furthermore, a circular valve box is welded to one end of the LNG cylinder body, and an anti-theft box is welded to the bottom of the circular valve box.

[0010] Furthermore, it also includes two symmetrically arranged convex mounting seats, with an arc-shaped groove on the top of the convex mounting seat, and the LNG cylinder body is snapped into the arc-shaped groove for assembly.

[0011] Furthermore, the LNG cylinder body is secured to two convex mounting bases by two steel straps.

[0012] The usage instructions include the following steps: ① When adding LNG to the LNG cylinder body, first open the lock with the key. After the lock is opened and unlocked, the vertical locking shaft that is freely movable on its U-shaped locking hook slides out from the lock hole. When the vertical locking shaft separates from the lock hole, it slides away from the first part of the L-shaped locking plate, unlocking the L-shaped locking plate and the cover plate. ② Pull the unlocked cover plate out of the opening of the anti-theft box. When the cover plate is pulled out, it will pull the pipe cover away from the gas pipe and open the opening at the beginning of the gas pipe. ③ Connect the gas gun and the gas hose in a fixed manner, open the gas gun, and add LNG into the LNG cylinder body through the gas hose; ④ After the LNG cylinder is fully filled, unlock and loosen the filling gun and filling pipe to separate them. ⑤ Finally, replace the cover plate with the opening of the anti-theft box and lock the cover plate with the lock.

[0013] The present invention provides an easy-to-refill vehicle-mounted LNG cylinder and its usage method, which has the following beneficial effects: 1. The lock, through the through-fitting of the vertical locking shaft freely set on the U-shaped locking hook with the front ends of the rectangular locking plate and the L-shaped locking plate, can insert and position the rectangular locking plate together to lock the cover plate, keeping the cover plate locked in the closed state, thus keeping the anti-theft box in the closed and anti-theft state. This can prevent the gas pipe from lacking necessary shielding and protection, allowing illegal and irregular personnel to directly access the gas pipe and easily open the locking and sealing mechanism in the gas pipe opening, maliciously leaking or stealing the LNG stored in the LNG cylinder.

[0014] Second, the lock, used as a cover plate and anti-theft lock for the anti-theft box, is directly fixed to the T-shaped mounting block. This allows the lock to remain fixed on the anti-theft box even when it is not in an unlocked or idle state. Compared to the traditional design of directly hooking the lock onto the rectangular and L-shaped locking plates, this eliminates the hassle of disassembling and separating the lock from the rectangular and L-shaped locking plates when unlocking the anti-theft box. It also avoids the trouble of properly storing the lock after it is removed when it is not in an unlocked or idle state, and the security risk of loss.

[0015] Third, the pipe cap is fitted over the opening at the beginning of the gas pipe to prevent the opening from being exposed for a long time without protection, which would easily accumulate dust and affect the sealing of the connection between the gas gun and the gas pipe.

[0016] Fourth, the pipe cover, which serves as a dustproof cover for the opening at the beginning of the gas filling pipe, is directly welded and fixed to the plug plate. This allows the plug plate to slide synchronously with the pipe cover when the plug plate is slid open from the outside or slid closed from the inside before and after gas filling operations. This controls the opening and closing of the pipe cover and the gas filling pipe, so that the opening and closing of the plug plate and the pipe cover can be manually performed at once before and after gas filling operations. This eliminates the trouble of having to perform the above two operations step by step, which helps to improve the efficiency of gas filling operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 A schematic diagram of the overall bottom side structure of the present invention is shown; Figure 3 The present invention is shown Figure 2 Enlarged structural diagram of section A; Figure 4 The diagram shows the assembly relationship between the cover plate and the anti-theft box in this invention; Figure 5 A diagram showing the assembly relationship between the gas filling pipe and the anti-theft box in this invention is provided. Figure 6 A schematic diagram of the internal structure of the anti-theft box in this invention is shown; Figure 7 A schematic diagram of the inner side view of the cover plate in this invention is shown; Figure 8 A schematic diagram showing the disassembled state of the LNG cylinder body in this invention is shown.

[0020] List of reference numerals in the attached diagram: 1. LNG cylinder body; 101. Circular valve box; 102. Anti-theft box; 1021. T-shaped mounting block; 1022. Rectangular locking plate; 103. Gas filling pipe; 2. Convex mounting base; 201. Arc-shaped slot; 3. Steel strip; 4. Lock; 401, U-shaped lock hook; 5. Cover plate; 501. Torque shaft; 5011. Rocker arm; 502. U-shaped positioning component; 5021. Limiting plate; 5022. L-shaped locking plate; 503. Mounting lug; 504. Connecting rod; 6. Pipe cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the described embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] Please refer to Figures 1 to 8 Example 1: This embodiment proposes a vehicle-mounted LNG cylinder for easy refueling, including an anti-theft box 102. Two refueling pipes 103 are symmetrically arranged inside the anti-theft box 102. A cover plate 5, conforming to its shape, is slidably fitted into the front side opening of the anti-theft box 102. A torsion shaft 501 is rotatably mounted through the center of the cover plate 5. Two U-shaped positioning parts 502 are symmetrically slidably mounted on the outside of the cover plate 5 by spring push. The first ends of the two horizontal side shafts of the U-shaped positioning parts 502 are inserted into the vertical side wall of the anti-theft box 102. Two sleeve-shaped pipe caps 6 are symmetrically welded to the inside of the cover plate 5. When the cover plate 5 is positioned in the closed state, the two pipe caps 6 are inserted into the first openings of the two refueling pipes 103. Two rocker arms 5011 are symmetrically welded to the outer periphery of the torsion shaft 501. Two parallel connecting rods 504 are rotatably connected between the first end of 5011 and the tail ends of two U-shaped positioning parts 502; a limiting plate 5021 is welded to the first end of the U-shaped positioning part 502, and an L-shaped locking plate 5022 is integrally formed on the end of the limiting plate 5021 away from the cover plate 5; T-shaped mounting blocks 1021 and rectangular locking plates 1022 are welded to the outside of a vertical side wall of the anti-theft box 102 at intervals, and a lock 4 is fixedly installed on the T-shaped mounting block 1021. When the cover plate 5 is positioned in the closed state, the first end of the L-shaped locking plate 5022 is in contact with the bottom side of the rectangular locking plate 1022, and the vertical locking shaft that is freely movable on the U-shaped locking hook 401 of the lock 4 passes through the first end of the L-shaped locking plate 5022 and the rectangular locking plate 1022 in sequence and is inserted and locked in the lock hole of the lock 4.

[0023] Preferably, two sets of mounting lugs 503 are symmetrically welded on the outer side of the cover plate 5, and two U-shaped positioning parts 502 are corresponding to the two sets of mounting lugs 503 and slide through them; the spring that pushes the U-shaped positioning part 502 is mounted on the horizontal side shaft of the U-shaped positioning part 502 and is compressed and clamped between the limiting plate 5021 and the mounting lugs 503.

[0024] Preferably, a knob is welded to the first end of the torsion shaft 501.

[0025] Preferably, it also includes an LNG cylinder body 1, and a gas filling pipe 103 is welded and connected to the LNG cylinder body 1.

[0026] Preferably, a circular valve box 101 is welded to one end of the LNG cylinder body 1, and an anti-theft box 102 is welded to the bottom of the circular valve box 101.

[0027] Preferably, it also includes two symmetrically arranged convex mounting seats 2, with an arc-shaped groove 201 on the top of the convex mounting seat 2, and the LNG cylinder body 1 is snapped into the arc-shaped groove 201 for assembly.

[0028] Preferably, the LNG cylinder body 1 is fixed to two convex mounting bases 2 by two steel straps 3.

[0029] Implementation 2, this embodiment is based on Implementation 1: A method of use, applied to an easy-to-refill vehicle-mounted LNG cylinder according to an embodiment, includes the following operational steps: ① When adding LNG to the LNG cylinder body 1, first open the lock 4 with the key. After the lock 4 is opened and unlocked, the vertical locking shaft that is freely movable on its U-shaped locking hook 401 slides out from the lock hole. When the vertical locking shaft is released and separated from the lock hole, it slides away from the first part of the L-shaped locking plate 5022, unlocking the L-shaped locking plate 5022 and the cover plate 5. ② Pull the unlocked cover plate 5 out of the front side opening of the anti-theft box 102. When the cover plate 5 is pulled out, it will pull the pipe cover 6 away from the gas pipe 103, opening the opening at the beginning of the gas pipe 103. ③ Connect the gas gun to the gas pipe 103 and open the gas gun to add LNG into the LNG cylinder body 1 through the gas pipe 103; ④ After the LNG cylinder body 1 is fully filled, unlock, loosen and separate the gas filling gun and gas filling pipe 103. ⑤ Finally, cover the front side opening of the anti-theft box 102 with the cover plate 5 again, and lock the cover plate 5 again with the lock 4.

[0030] The following provides a detailed explanation of the specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in implementing this technical solution: When the first ends of the two U-shaped positioning pieces 502 are inserted into the two vertical side walls of the anti-theft box 102, the cover plate 5 can be inserted and positioned in the front side opening of the anti-theft box 102. The two U-shaped positioning pieces 502 are kept in the inserted and positioned state by the springs on them. The two U-shaped positioning pieces 502, the two swing rods 5011, the two connecting rods 504 and the rotary shaft 501 are connected to form a double crank slider mechanism. Through this mechanism, by rotating the rotary shaft 501 in both directions, the U-shaped positioning pieces 502 can be driven to slide towards or away from each other, and can be pulled out or inserted into the two vertical side walls of the anti-theft box 102 to unlock and lock the cover plate 5.

[0031] Lock 4, through the vertical locking shaft freely set on the U-shaped locking hook 401, and the through-fitting of the first part of the rectangular locking plate 1022 and the L-shaped locking plate 5022, can insert and position the rectangular locking plate 1022 and the L-shaped locking plate 5022 together, thereby locking the cover plate 5 and keeping the cover plate 5 locked in the closed state, so that the anti-theft box 102 is kept in the closed and anti-theft state. This can prevent the gas pipe 103 from lacking necessary shielding and protection, so that illegal and irregular personnel can directly access the gas pipe 103 and easily open the locking and sealing mechanism in the opening of the gas pipe 103, maliciously leaking the LNG stored in the LNG cylinder body 1 or stealing LNG.

[0032] Lock 4 serves as the anti-theft lock for both the cover plate 5 and the anti-theft box 102. It is directly fixed to the T-shaped mounting block 1021. This allows lock 4 to remain fixed on the anti-theft box 102 even when it is in an unlocked, idle state. Compared to the traditional design of directly hooking the lock onto the rectangular locking plate 1022 and the L-shaped locking plate 5022, this eliminates the hassle of disassembling and separating the lock 4 from the rectangular locking plate 1022 and the L-shaped locking plate 5022 when unlocking the anti-theft box 102. It also avoids the hassle of properly storing the lock after it is removed from the unlocked, idle state and the potential security risk of loss.

[0033] The pipe cap 6 is fitted over the opening at the beginning of the gas pipe 103 to prevent the opening from being exposed for a long time due to lack of cover, which would easily accumulate dust and affect the sealing of the connection between the gas gun and the gas pipe 103. Note that the gas pipe 103 is not sealed by the pipe cap 6, but is sealed by its built-in locking and sealing mechanism.

[0034] The pipe cover 6, which serves as a dustproof cover for the opening at the beginning of the gas filling pipe 103, is directly welded and fixed to the plug plate 5. This allows the plug plate 5 to slide synchronously with the pipe cover 6 when the plug plate 5 is slid open outwards or closed inwards before and after the gas filling operation. This controls the pipe cover 6 to be pulled away from or connected to the gas filling pipe 103 for opening or closing. Thus, the opening and closing of the plug plate 5 and the pipe cover 6 can be manually performed at once before and after the gas filling operation, saving the trouble of performing the above two operations step by step and helping to improve the efficiency of the gas filling operation.

[0035] It is worth noting that the structure of the steel strip 3, its assembly and connection with the convex mounting base 2, and its binding and fixing principle for the LNG cylinder body 1 can be clearly understood from the accompanying drawings in the instruction manual, so they will not be elaborated here.

[0036] Working principle: When adding LNG to the LNG cylinder body 1, firstly, lock 4 is opened with a key. After lock 4 is opened and unlocked, the vertical locking shaft, which is freely movable on its U-shaped locking hook 401, slides out from the lock hole. When the vertical locking shaft separates from the lock hole, it slides away from the first end of the L-shaped locking plate 5022, unlocking the L-shaped locking plate 5022 and the cover plate 5. The unlocked cover plate 5 is then pulled out and opened from the front side opening of the anti-theft box 102. When opening, the cap 6 is pulled away from the gas filling pipe 103, and the opening at the first end of the gas filling pipe 103 is opened; the gas filling gun is inserted and fixedly connected to the gas filling pipe 103, the gas filling gun is opened, and LNG is filled into the LNG cylinder body 1 through the gas filling pipe 103; after the LNG cylinder body 1 is fully filled, the gas filling gun and the gas filling pipe 103 are unlocked, loosened and disassembled; finally, the cover plate 5 is re-covered on the front side opening of the anti-theft box 102, and the cover plate 5 is re-locked by the lock 4.

[0037] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0038] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vehicle-mounted LNG cylinder that is easy to refuel, comprising an anti-theft box (102), wherein two refueling pipes (103) are symmetrically arranged inside the anti-theft box (102). Its features are, A cover plate (5) is slidably fitted into the opening of the anti-theft box (102). A torsion shaft (501) is rotatably mounted through the cover plate (5). Two U-shaped positioning parts (502) are symmetrically slidably mounted on the outside of the cover plate (5) in the form of spring push. The U-shaped positioning parts (502) are inserted into the vertical side wall of the anti-theft box (102). Two pipe caps (6) are symmetrically welded on the inside of the cover plate (5). When the cover plate (5) is positioned in the closed state, the two pipe caps (6) are fitted into the openings of the two gas pipes (103). Two swing rods (5011) are symmetrically welded on the outer periphery of the torsion shaft (501). A connecting rod is rotatably connected between the two swing rods (5011) and the two U-shaped positioning parts (502). (504); A U-shaped positioning piece (502) is welded with a limiting plate (5021), and an L-shaped locking plate (5022) is integrally formed on the limiting plate (5021); A T-shaped mounting block (1021) and a rectangular locking plate (1022) are welded to the outside of a vertical side wall of the anti-theft box (102), and a lock (4) is fixedly installed on the T-shaped mounting block (1021). When the cover plate (5) is positioned in the closed state, the first end of the L-shaped locking plate (5022) is in contact with the bottom side of the rectangular locking plate (1022), and the vertical locking shaft freely arranged on the U-shaped locking hook (401) of the lock (4) passes through the first end of the L-shaped locking plate (5022) and the rectangular locking plate (1022) in sequence and is inserted into the lock hole of the lock (4).

2. The vehicle-mounted LNG cylinder for easy refueling according to claim 1, characterized in that, The cover plate (5) has two sets of mounting lugs (503) symmetrically welded on the outside. The two U-shaped positioning parts (502) are in sliding fit with the two sets of mounting lugs (503). A spring that pushes the U-shaped positioning member (502) is mounted on the horizontal side shaft of the U-shaped positioning member (502) and is compressed and clamped between the limiting plate (5021) and the mounting ear block (503).

3. The vehicle-mounted LNG cylinder for easy refueling according to claim 1, characterized in that, A knob is welded to the first end of the rotary shaft (501).

4. The vehicle-mounted LNG cylinder for easy refueling according to claim 1, characterized in that, It also includes the LNG cylinder body (1), and the gas filling pipe (103) is welded and connected to the LNG cylinder body (1).

5. A vehicle-mounted LNG cylinder for easy refueling according to claim 4, characterized in that, A circular valve box (101) is welded to one end of the LNG cylinder body (1), and an anti-theft box (102) is welded to the bottom of the circular valve box (101).

6. A vehicle-mounted LNG cylinder for easy refueling according to claim 4, characterized in that, It also includes two symmetrically arranged convex mounting seats (2), with an arc-shaped slot (201) on the top of the convex mounting seat (2), and the LNG cylinder body (1) is snapped into the arc-shaped slot (201) for assembly.

7. A vehicle-mounted LNG cylinder for easy refueling according to claim 6, characterized in that, The LNG cylinder body (1) is fixed to two convex mounting seats (2) by two steel straps (3).

8. A method of use, applied to a vehicle-mounted LNG cylinder for easy refueling as described in any one of claims 1 to 7, characterized in that, The following steps are included: ① When adding LNG to the LNG cylinder body (1), first open the lock (4) with the key. After the lock (4) is opened and unlocked, the vertical locking shaft that is freely installed on its U-shaped locking hook (401) slides out from the lock hole. When the vertical locking shaft separates from the lock hole, it slides away from the head part of the L-shaped locking plate (5022) to unlock the L-shaped locking plate (5022) and the cover plate (5). ② Remove the unlocked cover plate (5) from the opening of the anti-theft box (102). When the cover plate (5) is removed, it will pull the pipe cover (6) and the gas pipe (103) apart, and open the opening at the beginning of the gas pipe (103). ③ Connect the gas gun to the gas pipe (103) and open the gas gun to inject LNG into the LNG cylinder body (1) through the gas pipe (103); ④ After the LNG cylinder body (1) is fully filled, unlock and loosen the gas gun and gas pipe (103) to separate them. ⑤ Finally, cover the opening of the anti-theft box (102) with the cover plate (5) again, and lock the cover plate (5) again with the lock (4).

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