A mobile methanol filling skid-mounted device

Abstract

The present application relates to the technical fields of methanol filling, and discloses a mobile methanol filling skid-mounted device, which comprises a filling pry body installed on a tank truck, wherein the filling pry body is provided with an output system, the output system is installed with a connecting pipe, the connecting pipe is installed with a return bend at the end, and the return bend is connected with an output pipe at the end. The present application adopts a double sealing design of valve core and valve seat, plugging plug and flowing channel, greatly improves the sealing performance after the pipeline is closed, and can also protect the valve core. At the same time, in the instant of rapid closing of the valve core, the return bend will generate a transient high pressure due to the sudden cut-off of the medium passage, and the extrusion piston can effectively buffer and absorb the transient impact pressure, avoid the impact damage of the transient high pressure on the key components such as the return bend, valve seat and valve core, and further prolong the service life of the key components of the device, ensure the long-term stable operation of the device, and adapt to the complex working condition requirements of mobile filling.

Description

Technical Field

[0001] This invention belongs to the field of methanol refueling technology, specifically, it relates to a mobile methanol refueling skid-mounted device. Background Technology

[0002] With the promotion of clean energy and the increasing demand for mobile refueling, mobile methanol refueling skid-mounted units have become core equipment for integrated methanol fuel storage, transportation, and refueling operations, and are widely used in methanol fuel replenishment scenarios such as ships, vehicles, and industrial boilers. These units use an integrated skid as a carrier, integrating storage tanks, transfer pumps, control valves, metering instruments, safety accessories, and piping systems. They possess advantages such as high mobility, rapid deployment, small footprint, and high operating efficiency, and can meet the requirements of multi-point, temporary, and mobile methanol refueling operations, making them an important component of the current methanol fuel replenishment system.

[0003] Currently, in practical use, existing mobile methanol refueling skid-mounted units have been found to experience a momentary excessive pressure in the methanol medium within the loop pipe when the refueling operation is completed and the valve core closes to cut off the medium passage. This momentary high pressure cannot be buffered and released in time, easily causing strong impacts on key components such as the loop pipe, valve seat, and valve core, leading to wear, deformation, or even damage to these components, shortening their service life, and increasing maintenance costs.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To address the problem that when the filling operation is completed and the valve core closes to cut off the medium passage, the methanol medium in the loop will experience a sudden and excessively high pressure due to the sudden blockage of the passage. This instantaneous high pressure cannot be buffered and released in time, easily causing severe impacts to critical components such as the loop, valve seat, and valve core, leading to wear, deformation, or even damage, shortening service life, and increasing maintenance costs. The basic concept of the technical solution adopted in this invention is as follows:

[0006] A mobile methanol refueling skid-mounted device includes a refueling skid body installed on a tanker truck. The refueling skid body is provided with an output system, and the output system is equipped with a connecting pipe. A loop is installed at the end of the connecting pipe, and the end of the loop is connected to an output pipe. The output pipe is used to connect with an external structure.

[0007] The loop tube is equipped with valve seats at both ends, and valve cores that move synchronously are rotatably installed inside the valve seats, and a synchronous shaft is installed between the valve cores.

[0008] A pressure relief cover is installed on the spiral tube, and a compression piston is movably installed inside the pressure relief cover. A push rod is installed on the compression piston, and the end of the push rod is in contact with the side wall of the turntable installed on the synchronous shaft. A guide surface is provided on the turntable. When the valve core blocks the valve seat, the guide surface drives the push rod to retract, which in turn drives the compression piston to retract, reducing the pressure inside the spiral tube and reducing damage to the spiral tube.

[0009] A barrier cover is installed on the output pipe, and a balance pipe is connected between the barrier cover and the pressure relief cover. A sealing plug is movably inserted into the side wall of the barrier cover. When the extrusion piston moves, the extrusion cavity drives the sealing plug to move outward and seal the output pipe, thus protecting the valve core.

[0010] In a preferred embodiment of the present invention, uprights are installed at the corners of the refueling skid body, and several pairs of mounting holes are provided at the bottom of the uprights. The mounting holes facilitate the installation of the refueling skid body on the tank truck by bolts. A protective cover is installed on the side wall of the refueling skid body, and the protective cover is used to protect the internal pipelines of the refueling skid body. A door is also installed on the side wall of the protective cover.

[0011] In a preferred embodiment of the present invention, a positioning frame is welded to the outer wall of the output pipe, the end of the positioning frame is connected to the inner wall of the protective cover by bolts, and a connecting flange is installed at the end of the output pipe, and the connecting flange has a plurality of pairs of connecting holes.

[0012] In a preferred embodiment of the present invention, the two ends of the loop tube form angles of 90 degrees with the connecting tube and the output tube, respectively. The valve core has an L-shaped through hole inside, which corresponds to the loop tube, the connecting tube and the output tube, respectively. The synchronous shaft passes through the valve seat housing.

[0013] In a preferred embodiment of the present invention, a bracket is installed on the outer wall of the connecting pipe. The bracket is L-shaped, and a drive motor is installed on the outer shell of the bracket. An output shaft is installed at the output end of the drive motor, and the end of the output shaft passes through the valve seat and is connected to the center of the valve core.

[0014] In a preferred embodiment of the present invention, the push rod and the pressure relief cover are movably connected, and a ball is installed at the end of the push rod. The surface of the ball is in close contact with the outer wall of the turntable, and the length of the initial end of the guide surface from the rotation center of the turntable is greater than the length of the end of the guide surface from the rotation center of the turntable.

[0015] In a preferred embodiment of the present invention, a compression spring is sleeved on the outer wall of the top rod located outside the pressure relief cover. A baffle is also installed at the end of the top rod. One end of the compression spring is engaged with the outer wall of the pressure relief cover, and the other end of the compression spring is engaged with the baffle. The compression spring is used to drive the ball bearing to always be in contact with the outer wall of the turntable.

[0016] In a preferred embodiment of the present invention, a pressure chamber is formed between one end of the extrusion piston and the side wall of the pressure relief cover, and a connecting hole is provided on the pressure chamber, and a balance pipe is connected inside the connecting hole. A power storage chamber is opened inside the barrier cover, and the pressure chamber, the balance pipe and the power storage chamber are interconnected.

[0017] In a preferred embodiment of the present invention, a positioning piston is slidably disposed inside the barrier cover, and a sealing plug is installed at one end of the positioning piston, and the sealing plug moves through the barrier cover. A return spring is snapped onto one end of the positioning piston, and the other end of the return spring is connected to the side wall of the barrier cover. The compression direction of the return spring and the movement direction of the positioning piston are both on the same straight line.

[0018] In a preferred embodiment of the present invention, the inner wall of the output pipe is provided with a flow channel, and the size of the flow channel is adapted to the size of the sealing plug. The end of the sealing plug is chamfered, and the outer wall of the flow channel is provided with a tapered surface.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This invention employs a dual-sealing design of valve core and valve seat, as well as sealing blockage and flow passage, which significantly improves the sealing performance after pipeline closure. This reduces methanol medium leakage, effectively enhances the safety of mobile methanol refueling operations, and protects the valve core. Simultaneously, at the moment the valve core closes rapidly, a momentary high pressure is generated in the loop tube due to the sudden cut-off of the medium passage. The squeeze piston can effectively buffer and absorb this momentary impact pressure, preventing the momentary high pressure from causing impact damage to key components such as the loop tube, valve seat, and valve core. This extends the service life of key components of the device, ensures long-term stable operation of the device, and adapts to the complex operating conditions of mobile refueling.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 A three-dimensional diagram of a mobile methanol refueling skid-mounted device;

[0024] Figure 2 A side view of a mobile methanol refueling skid-mounted device;

[0025] Figure 3 A partial view of a mobile methanol refueling skid-mounted device;

[0026] Figure 4 A cross-sectional view of the valve seat of a mobile methanol refueling skid-mounted device;

[0027] Figure 5 A cross-sectional view of the pressure relief hood of a mobile methanol refueling skid-mounted device;

[0028] Figure 6 A mobile methanol refueling skid-mounted device Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 This is a cross-sectional view of the output pipe of a mobile methanol refueling skid-mounted device.

[0030] In the diagram: 1. Filling skid body; 2. Upright pole; 3. Mounting hole; 4. Protective cover; 5. Door; 6. Connecting pipe; 7. U-shaped pipe; 8. Output pipe; 9. Positioning frame; 10. Connecting flange; 11. Connecting hole; 12. Valve seat; 13. Drive motor; 14. Bracket; 15. Synchronous shaft; 16. Valve core; 17. Turntable; 18. Guide surface; 19. Pressure relief cover; 20. Extrusion piston; 21. Connecting hole; 22. Pressure chamber; 23. Push rod; 24. Ball bearing; 25. Baffle; 26. Compression spring; 27. Barrier cover; 28. Balance pipe; 29. ​​Storage chamber; 30. Sealing plug; 31. Positioning piston; 32. Return spring; 33. Flow channel; 34. Conical surface; 35. Through hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention. Example 1

[0032] like Figures 1 to 7 As shown, a mobile methanol refueling skid-mounted device includes a refueling skid body 1 installed on a tanker truck. The refueling skid body 1 is provided with an output system, and the output system is equipped with a connecting pipe 6. A loop pipe 7 is installed at the end of the connecting pipe 6, and an output pipe 8 is connected to the end of the loop pipe 7. The output pipe 8 is used to connect with an external structure.

[0033] Valve seats 12 are installed at both ends of the U-shaped tube 7, and valve cores 16 that move synchronously are rotatably installed inside the valve seats 12. A synchronous shaft 15 is installed between the valve cores 16. A pressure relief cover 19 is installed on the U-shaped tube 7, and a compression piston 20 is movably installed inside the pressure relief cover 19. A push rod 23 is installed on the compression piston 20, and the end of the push rod 23 is in contact with the side wall of the turntable 17 installed on the synchronous shaft 15. A guide surface 18 is provided on the turntable 17. When the valve core 16 pushes the valve seat 12, the valve core 16 moves synchronously. After sealing, the guide surface 18 drives the push rod 23 to retract, which in turn drives the extrusion piston 20 to retract, reducing the pressure inside the loop tube 7 and minimizing damage to the loop tube 7. A barrier cover 27 is installed on the output pipe 8, and a balance pipe 28 connects the barrier cover 27 and the pressure relief cover 19. A sealing plug 30 is movably inserted into the side wall of the barrier cover 27. When the extrusion piston 20 moves, the extrusion cavity drives the sealing plug 30 to move outward and seal the output pipe 8, protecting the valve core 16. The cooperation of the pressure relief cover 19, the extrusion piston 20, the push rod 23, the turntable 17, and the guide surface 18 can effectively reduce the pressure inside the loop tube 7 and protect the loop tube 7. At the same time, the cooperation of the barrier cover 27, the balance pipe 28, and the sealing plug 30 protects the valve core 16 and extends the service life of key components of the device.

[0034] like Figures 1 to 7 As shown in the specific embodiment, uprights 2 are installed at the corners of the refueling skid body 1. Several pairs of mounting holes 3 are provided at the bottom of the uprights 2, facilitating the installation of the refueling skid body 1 onto the tank truck using bolts. A protective cover 4 is installed on the side wall of the refueling skid body 1, protecting the internal piping. A door 5 is also installed on the side wall of the protective cover 4. The uprights 2 and mounting holes 3 facilitate quick and secure assembly of the refueling skid body 1 with the tank truck. The protective cover 4 and door 5 provide effective protection for the internal piping, reducing the risk of pipe damage. The door 5 also facilitates subsequent inspection and maintenance of the internal piping.

[0035] like Figures 1 to 7 As shown, a positioning frame 9 is welded to the outer wall of the output pipe 8. The end of the positioning frame 9 is bolted to the inner wall of the protective cover 4. A connecting flange 10 is installed at the end of the output pipe 8, and several pairs of connecting holes 11 are provided on the connecting flange 10. The positioning frame 9 can provide stable support for the output pipe 8, preventing the output pipe 8 from shaking and deforming under force. The connecting flange 10 and the connecting holes 11 facilitate precise docking of the output pipe 8 with the external structure, ensuring the sealing of the docking point and preventing methanol medium leakage. Example 2

[0036] The difference between the above embodiments and this embodiment is that: Figures 1 to 7As shown, the two ends of the loop tube 7 form angles of 90 degrees with the connecting tube 6 and the output tube 8, respectively. The valve core 16 has a through hole 35 inside, and the through hole 35 is L-shaped. The through hole 35 corresponds to the loop tube, the connecting tube 6 and the output tube 8, respectively. The synchronous shaft 15 is movably connected to the outer shell of the valve seat 12.

[0037] like Figures 1 to 7 As shown, in a specific embodiment, a bracket 14 is installed on the outer wall of the connecting pipe 6. The bracket 14 is L-shaped, and a drive motor 13 is installed on the outer shell of the bracket 14. An output shaft is installed at the output end of the drive motor 13, and the end of the output shaft passes through the valve seat and is connected to the center of the valve core 16. The L-shaped bracket 14 can stably install the drive motor 13, and the drive motor 13 can precisely drive the valve core 16 to rotate through the output shaft, realizing the automatic opening and closing of the valve core 16, improving work efficiency and reducing manual operation intensity. Example 3

[0038] The difference between the above embodiments and this embodiment is that: Figures 1 to 7 As shown, the push rod 23 passes through the pressure relief cover 19. A ball bearing 24 is installed at the end of the push rod 23. The surface of the ball bearing 24 is in close contact with the outer wall of the turntable 17. The distance from the initial end of the guide surface 18 to the rotation center of the turntable 17 is greater than the distance from the end of the guide surface 18 to the rotation center of the turntable 17. A compression spring 26 is sleeved on the outer wall of the push rod 23 located outside the pressure relief cover 19. A baffle 25 is also installed at the end of the push rod 23. One end of the compression spring 26 is engaged with the outer wall of the pressure relief cover 19, and the other end is engaged with the baffle 25. The compression spring 26 is used to drive the ball bearing 24 to always be in contact with the outer wall of the turntable 17. The ball bearing 24 can convert the sliding friction between the push rod 23 and the turntable 17 into rolling friction, reducing component wear. The compression spring 26 and the baffle 25 can ensure that the ball bearing 24 is always in contact with the turntable 17, ensuring that the guide surface 18 can accurately drive the push rod 23 to move, thus improving the reliability of the pressure relief protection.

[0039] like Figures 1 to 7 As shown, in a specific embodiment, a pressure chamber 22 is formed between one end of the compression piston 20 and the side wall of the pressure relief cover 19. A connecting hole 21 is provided on the pressure chamber 22, and a balance pipe 28 is connected inside the connecting hole 21. A storage chamber 29 is provided inside the barrier cover 27. The chambers of the pressure chamber 22, the balance pipe 28, and the storage chamber 29 are interconnected. This interconnected design of the pressure chamber 22, the connecting hole 21, the balance pipe 28, and the storage chamber 29 enables rapid pressure transmission, ensuring that the action of the compression piston 20 synchronously drives the sealing plug 30, thus guaranteeing the timeliness and effectiveness of the secondary seal.

[0040] like Figures 1 to 7As shown, a positioning piston 31 is slidably disposed inside the barrier cover 27, and a sealing plug 30 is installed at one end of the positioning piston 31. The sealing plug 30 moves through the barrier cover 27. A return spring 32 is snapped onto one end of the positioning piston 31, and the other end of the return spring 32 is connected to the side wall of the barrier cover 27. The compression direction of the return spring 32 and the movement direction of the positioning piston 31 are both on the same straight line. A flow channel 33 is provided on the inner side wall of the output pipe 8, and the size of the flow channel 33 is adapted to the sealing plug 30. The end of the sealing plug 30 is chamfered, and a conical surface 34 is provided on the outer side wall of the flow channel 33. The positioning piston 31 can ensure the accuracy of the movement of the sealing plug 30, and the return spring 32 facilitates the reset of the sealing plug 30, ensuring the normal operation of the filling operation. The chamfering of the sealing plug 30 and the conical surface 34 of the flow channel 33 can improve the sealing performance of the secondary seal and completely eliminate methanol medium leakage.

[0041] The implementation principle of the mobile methanol refueling skid-mounted device of the present invention is as follows: The refueling skid body 1 is securely installed on the tank truck with bolts through several pairs of mounting holes 3 on the uprights 2 at its four corners, which are opened around its perimeter. This facilitates subsequent movement. Moreover, this installation method not only enables the rapid assembly of the refueling skid body 1 and the tank truck, but also ensures that the device will not shift or loosen due to road bumps or vehicle shaking during the tank truck's transportation. This effectively improves the overall installation stability and movement safety of the device, avoiding safety hazards such as leakage at pipeline connections and damage to components due to insecure installation. The protective cover 4 and the cover door 5 work together to provide all-round protection for all pipelines, valve groups and drive components inside the refueling skid body 1. At the same time, it prevents personnel from accidentally touching high-temperature pipelines or moving parts and causing safety accidents, extending the service life of internal components and reducing later maintenance costs.

[0042] After the methanol medium flows out of the output system of the filling skid body 1, it flows through the connecting pipe 6, the loop pipe 7 and the output pipe 8 in sequence to complete the entire filling process. The setting of the loop pipe 7 can effectively buffer the pressure fluctuations during the medium transportation process, avoid the impact of sudden changes in medium flow rate on the pipeline, and facilitate the layout and installation of the pipeline, saving installation space on the filling skid body 1.

[0043] During normal filling operations, the drive motor 13, installed on the L-shaped bracket 14 on the outer wall of the connecting pipe 6, starts and drives the valve core 16 to remain open in the valve seat 12 through the output shaft; the two ends of the synchronous shaft 15 are connected to the valve core 16 and can rotate synchronously with the valve core 16 to ensure that the opening angle of the two valve cores 16 is consistent and the action is synchronized, so as to avoid uneven medium flow rate and pressure imbalance in the loop pipe 7 due to asynchronous action of the valve cores 16, thereby preventing problems such as local high pressure and vibration in the pipeline.

[0044] When the filling operation is completed and the pipeline needs to be shut off, the drive motor 13 drives the valve core 16 to rotate, so that the valve core 16 gradually and completely seals the valve seat 12, realizing the rapid and reliable cut-off of the methanol medium passage and avoiding the waste and safety hazards caused by the continued flow of medium. During this process, the synchronous shaft 15 drives the turntable 17 to rotate synchronously. The guide surface 18 on the turntable 17 gradually contacts the ball 24 and generates compression. Since the length of the initial end of the guide surface 18 from the rotation center of the turntable 17 is greater than the length of the end of the guide surface 18 from the rotation center of the turntable 17, as the turntable 17 rotates, the guide surface generates a thrust on the ball 24 into the pressure relief cover 19, causing the push rod 23 to move into the pressure relief cover 19. The compression spring 26 on the outside of the push rod 23 is compressed and stored. This compression spring 26 can not only provide the return force for the push rod 23, but also push the extrusion piston 20 synchronously inside the pressure relief cover 19 when the push rod 23 moves into the pressure relief cover 19. The action causes the internal volume of the pressure chamber 22 to decrease and the pressure to rise rapidly. This high pressure state enters the balance pipe 28 through the connecting hole 21 on the pressure chamber 22, and is then quickly transmitted to the storage chamber 29 through the balance pipe 28, causing the pressure in the storage chamber 29 to increase synchronously. The high pressure in the storage chamber 29 pushes the positioning piston 31 to move towards the output pipe 8 against the elastic force of the return spring 32. The positioning piston 31 drives the sealing plug 30 to extend into the output pipe 8 and finally insert it into the flow channel 33 on the inner side wall of the output pipe 8. The chamfered treatment at the end of the sealing plug 30 cooperates with the conical surface 34 on the outer side wall of the flow channel 33 to achieve a tight seal of the output pipe 8, completing the secondary seal at the output end. The design of double sealing (the primary seal between the valve core 16 and the valve seat 12, and the secondary seal between the sealing plug 30 and the flow channel 33) greatly improves the sealing performance after the pipeline is closed, completely eliminates methanol medium leakage, and further improves operational safety.

[0045] Simultaneously, at the instant the valve core 16 closes rapidly, the methanol medium in the loop 7 generates instantaneous high pressure due to the sudden cut-off of the passage. This instantaneous pressure acts on the pressure relief cover 19 and the squeeze piston 20. The movement of the squeeze piston 20 can effectively buffer and absorb the impact pressure in the pipeline, preventing the instantaneous high pressure from causing impact damage to components such as the loop 7, valve seat 12, and valve core 16. This achieves pressure relief protection during the pipeline closure process and extends the service life of key components of the device. In addition, the entire operation process is achieved through mechanical linkage, without the need for additional hydraulic or pneumatic control systems. The structure is simple and highly reliable, reducing the manufacturing cost and subsequent maintenance difficulty of the device. It is suitable for the complex working conditions of mobile refueling and further improves the safety, stability, and practicality of mobile methanol refueling operations.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mobile methanol refueling skid-mounted device, comprising a refueling skid body (1) mounted on a tanker truck, characterized in that: The filling skid body (1) is provided with an output system, and the output system is equipped with a connecting pipe (6). A loop pipe (7) is installed at the end of the connecting pipe (6), and an output pipe (8) is connected to the end of the loop pipe (7). The output pipe (8) is used to connect with the external structure. The loop tube (7) is equipped with valve seats (12) at both ends, and valve cores (16) that move synchronously are rotatably installed inside the valve seats (12), and a synchronous shaft (15) is installed between the valve cores (16). A pressure relief cover (19) is installed on the spiral tube (7). A compression piston (20) is movably installed inside the pressure relief cover (19). A push rod (23) is installed on the compression piston (20). The end of the push rod (23) is in contact with the side wall of the turntable (17) installed on the synchronous shaft (15). A guide surface (18) is provided on the turntable (17). When the valve core (16) blocks the valve seat (12), the guide surface (18) drives the push rod (23) to retract, thereby driving the compression piston (20) to retract, reducing the pressure inside the spiral tube (7) and reducing damage to the spiral tube (7). A barrier cover (27) is installed on the output pipe (8). A balance pipe (28) is connected between the barrier cover (27) and the pressure relief cover (19). A sealing plug (30) is movably inserted into the side wall of the barrier cover (27). When the extrusion piston (20) moves, the extrusion cavity drives the sealing plug (30) to move outward and seal the output pipe (8), thus protecting the valve core (16). One end of the compression piston (20) forms a pressure chamber (22) between the side wall of the pressure relief cover (19), and the pressure chamber (22) is provided with a connecting hole (21), and a balance tube (28) is connected inside the connecting hole (21). A power storage chamber (29) is opened inside the barrier cover (27), and the chambers of the pressure chamber (22), the balance tube (28) and the power storage chamber (29) are interconnected. A positioning piston (31) is slidably arranged inside the barrier cover (27), and a sealing plug (30) is installed at one end of the positioning piston (31), and the sealing plug (30) moves through the barrier cover (27). A return spring (32) is snapped onto one end of the positioning piston (31), and the other end of the return spring (32) is connected to the side wall of the barrier cover (27).

2. The mobile methanol refueling skid-mounted device according to claim 1, characterized in that, The refueling skid body (1) is equipped with uprights (2) at the corners of its four sides. The bottom of the uprights (2) has several pairs of mounting holes (3). The mounting holes (3) facilitate the installation of the refueling skid body (1) on the tank truck by bolts. The side wall of the refueling skid body (1) is equipped with a protective cover (4), which is used to protect the internal pipelines of the refueling skid body (1). The side wall of the protective cover (4) is also equipped with a door (5).

3. The mobile methanol refueling skid-mounted device according to claim 1, characterized in that, A positioning frame (9) is welded to the outer wall of the output pipe (8). The end of the positioning frame (9) is connected to the inner wall of the protective cover (4) by bolts. A connecting flange (10) is installed at the end of the output pipe (8). Several pairs of connecting holes (11) are opened on the connecting flange (10).

4. The mobile methanol refueling skid-mounted device according to claim 1, characterized in that, The two ends of the loop tube (7) are at 90 degrees with the connecting tube (6) and the output tube (8) respectively. The valve core (16) has a through hole (35) inside, and the through hole (35) is L-shaped. The through hole (35) corresponds to the loop tube, the connecting tube (6) and the output tube (8) respectively. The synchronous shaft (15) is movably penetrating the outer shell of the valve seat (12).

5. A mobile methanol refueling skid-mounted device according to claim 1, characterized in that, A bracket (14) is installed on the outer wall of the connecting pipe (6). The bracket (14) is L-shaped. A drive motor (13) is installed on the outer shell of the bracket (14). An output shaft is installed at the output end of the drive motor (13). The end of the output shaft passes through the valve seat and is connected to the center of the valve core (16).

6. A mobile methanol refueling skid-mounted device according to claim 1, characterized in that, The push rod (23) and the pressure relief cover (19) are connected through each other. A ball bearing (24) is installed at the end of the push rod (23). The surface of the ball bearing (24) is in close contact with the outer wall of the turntable (17). The length of the initial end of the guide surface (18) from the rotation center of the turntable (17) is greater than the length of the end of the guide surface (18) from the rotation center of the turntable (17).

7. A mobile methanol refueling skid-mounted device according to claim 6, characterized in that, A compression spring (26) is sleeved on the outer wall of the top rod (23) located outside the pressure relief cover (19). A baffle (25) is also installed at the end of the top rod (23). One end of the compression spring (26) is clamped to the outer wall of the pressure relief cover (19), and the other end of the compression spring (26) is clamped to the baffle (25). The compression spring (26) is used to drive the ball (24) to always be in contact with the outer wall of the turntable (17).

8. A mobile methanol refueling skid-mounted device according to claim 1, characterized in that, The compression direction of the return spring (32) and the movement direction of the positioning piston (31) are both on the same straight line.

9. A mobile methanol refueling skid-mounted device according to claim 1, characterized in that, The inner wall of the output pipe (8) is provided with a flow channel (33), and the size of the flow channel (33) is adapted to the size of the sealing plug (30). The end of the sealing plug (30) is chamfered, and the outer wall of the flow channel (33) is provided with a conical surface (34).

Images