A plate heat exchanger for hydrogen unloading of a hydrogen station

Abstract

The utility model discloses a kind of plate heat exchangers for hydrogen unloading of hydrogenation station, it is related to plate heat exchanger technical field, including pry dress, heat exchanger body, guide rail, sliding table and rotating table, pry dress both sides are connected with guide rail, sliding table slides between two the guide rail, rotating table rotation is connected in the center position of the sliding table, the heat exchanger body is connected with the rotating table upper side.This utility model sets up sliding table and guide rail, so that heat exchanger body can be along guide rail from pry dress interior smooth to pry dress side, to significantly increase the space and field of view of maintenance operation, facilitate personnel operation, by setting rotating table, heat exchanger body can be freely rotated to suitable angle on sliding table, facilitate adjustment maintenance posture, for example, heat exchange plate is cleaned or import and export pipe direction is adjusted, effectively solve the existing pry dress plate heat exchanger maintenance difficulty, inconveniently move problem.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, and in particular to a plate heat exchanger for hydrogen unloading at a hydrogen refueling station. Background Technology

[0002] The main purpose of plate heat exchangers in hydrogen refueling stations is to pre-cool the high-pressure hydrogen from the long-tube trailer during the unloading process, thereby reducing the inlet temperature of the subsequent compressor, protecting the compressor and hydrogen storage container, and improving refueling efficiency.

[0003] Due to the flammable and explosive nature of the hydrogen refueling medium and the stringent safety regulations, the plate heat exchangers in hydrogen refueling stations need to undergo frequent inspections and regular maintenance to ensure that their sealing, pressure-bearing capacity, and heat exchange performance are always in a safe and controllable state.

[0004] Currently, plate heat exchangers used in hydrogen refueling stations are usually integrated and installed on skids. When maintenance is required, operators must first disassemble the inlet and outlet pipes. However, the heat exchanger itself is heavy and difficult to move within the limited space of the skid and completely separate from the pipes. This results in limited visibility and narrow operating space for maintenance operations, making it inconvenient to perform plate cleaning, seal replacement and other operations. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a plate heat exchanger for hydrogen unloading at hydrogen refueling stations. This allows the heat exchanger body to slide smoothly from inside the skid along the guide rail to the side of the skid, thereby significantly increasing the space and field of vision for maintenance operations and facilitating personnel work. By setting a rotating platform, the heat exchanger body can be freely rotated to a suitable angle on the sliding platform, making it easy to adjust the maintenance posture.

[0006] The technical solution adopted to solve the above technical problems is: a plate heat exchanger for hydrogen unloading at a hydrogen refueling station, including a skid, a heat exchanger body, guide rails, a sliding table and a rotating table. The skid is connected to guide rails on both sides, the sliding table slides between the two guide rails, the rotating table is rotatably connected to the center position of the sliding table, and the heat exchanger body is connected to the upper side of the rotating table.

[0007] Furthermore, it also includes a lock disc, lock grooves, lock components, guide rods, and a first lead screw. The lock disc is coaxially connected to the lower side of the sliding table. The lock disc has multiple lock grooves evenly distributed along the circumferential direction. The lock components are slidably connected to one side of the sliding table through the guide rods. The first lead screw is rotatably connected to one side of the sliding table. The lock components are screwed onto the first lead screw.

[0008] Furthermore, it also includes spring rods and lock holes. Spring rods are movably connected to both sides of the sliding table, and a lock hole is opened at the end of the guide rail away from the skid. The spring rods and lock holes correspond one-to-one.

[0009] Furthermore, it also includes a relief groove and an arc plate. The guide rail has a relief groove at the end near the skid, and an arc plate is connected in the relief groove. The arc plate and the spring rod are matched one-to-one.

[0010] Furthermore, it also includes a connecting plate, a sliding rod, a second lead screw, and an ejector. The end of the guide rail away from the skid is connected to the connecting plate. The sliding rod is fixed between the two connecting plates. The second lead screw is rotatably connected between the two connecting plates. The second lead screw is a bidirectional lead screw. Ejector is screwed to both ends of the second lead screw. The ejector is slidably sleeved on the sliding rod. The ejector is used to press the spring rod to disengage from the lock hole and unlock.

[0011] Furthermore, it also includes wheel frames, rollers, and limiting blocks. Multiple wheel frames are connected to both sides of the sliding table, and rollers are rotatably connected to the upper and lower sides of the wheel frames. The rollers roll in the guide rail, and a limiting block is connected to the end of the guide rail near the skid. The limiting block cooperates with the rollers.

[0012] The beneficial effects of this utility model are as follows: By setting a sliding table and guide rail, the heat exchanger body can be smoothly slid out from the skid interior to the skid side along the guide rail, thereby significantly increasing the space and field of vision for maintenance operations and facilitating personnel operations. By setting a rotating table, the heat exchanger body can be freely rotated to a suitable angle on the sliding table, which is convenient for adjusting the maintenance posture, such as cleaning the heat exchange plates or adjusting the direction of the inlet and outlet pipes. This effectively solves the problems of difficult maintenance and inconvenient movement of existing skid-mounted plate heat exchangers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram showing the position of the sliding table of this utility model.

[0015] Figure 3 This is a schematic diagram of the guide rail structure of this utility model.

[0016] Figure 4 This is a schematic diagram showing the position of the lock disc in this utility model.

[0017] Figure 5 This is a schematic diagram of the lock component structure of this utility model.

[0018] Reference numerals in the attached drawings: 1. Skid-mounted; 2. Heat exchanger body; 3. Guide rail; 4. Sliding table; 5. Rotating table; 6. Locking disc; 7. Locking groove; 8. Locking element; 9. Guide rod; 10. First lead screw; 11. Spring rod; 12. Locking hole; 13. Relief groove; 14. Arc plate; 15. Connecting plate; 16. Sliding rod; 17. Second lead screw; 18. Ejector; 19. Wheel frame; 20. Roller; 21. Limiting block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] like Figures 1-5 As shown in the figure, this embodiment provides a plate heat exchanger for hydrogen unloading at a hydrogen refueling station, including a skid 1, a heat exchanger body 2, guide rails 3, a sliding table 4, and a rotating table 5. Guide rails 3 are connected to both sides of the skid 1. The sliding table 4 slides between the two guide rails 3. The rotating table 5 is rotatably connected to the center position of the sliding table 4. The heat exchanger body 2 is connected to the upper side of the rotating table 5.

[0021] In the above embodiments, by setting the sliding table 4 and the guide rail 3, the heat exchanger body 2 can be smoothly slid out from inside the skid 1 to the side of the skid 1 along the guide rail 3, thereby significantly increasing the space and field of vision for maintenance operations and facilitating personnel operations. By setting the rotating table 5, the heat exchanger body 2 can be freely rotated to a suitable angle on the sliding table 4, which facilitates the adjustment of the maintenance posture, such as cleaning the heat exchange plates or adjusting the direction of the inlet and outlet pipes. This effectively solves the problems of difficult maintenance and inconvenient movement of the existing skid-mounted plate heat exchanger.

[0022] Specifically, it also includes a locking disc 6, a locking groove 7, a locking element 8, a guide rod 9, and a first lead screw 10. The locking disc 6 is coaxially connected to the lower side of the sliding table 4. The locking disc 6 has multiple locking grooves 7 evenly opened along the circumferential direction. The locking element 8 is slidably connected to one side of the sliding table 4 through the guide rod 9. The first lead screw 10 is rotatably connected to one side of the sliding table 4. The locking element 8 is screwed onto the first lead screw 10.

[0023] In the above embodiments, by setting up a locking disc 6, a locking groove 7, and a locking element 8 driven by a first lead screw 10, after the operator rotates the heat exchanger body 2 to the required maintenance angle, the operator can rotate the first lead screw 10 to move the locking element 8 linearly along the guide rod 9 and insert it into the corresponding locking groove 7, thereby reliably locking the rotation position of the rotating table 5. This structure can achieve rapid and accurate positioning and locking at multiple rotation angles, preventing accidental rotation of the heat exchanger body 2 during maintenance and improving operational safety and stability.

[0024] Specifically, it also includes spring rods 11 and lock holes 12. Spring rods 11 are movably connected to both sides of the sliding table 4. A lock hole 12 is opened at the end of the guide rail 3 away from the skid 1. The spring rods 11 and lock holes 12 correspond one-to-one.

[0025] In the above embodiments, spring rods 11 are provided on both sides of the sliding table 4, and a locking hole 12 is opened at the far end of the guide rail 3. When the sliding table 4 is pulled outward to the maintenance position, the spring rods 11 automatically insert into the locking hole 12 under their own elastic force, realizing the mechanical self-locking between the sliding table 4 and the guide rail 3, preventing the sliding table 4 from accidentally retracting during maintenance. This structure can automatically lock without additional operation, simplifying the maintenance process and enhancing the safety of operation.

[0026] Specifically, it also includes a relief groove 13 and an arc plate 14. The end of the guide rail 3 near the skid 1 has a relief groove 13, and an arc plate 14 is connected inside the relief groove 13. The arc plate 14 and the spring rod 11 are matched one-to-one.

[0027] In the above embodiments, when the sliding table 4 is in the working position (not pulled out), the spring rod 11 is located in the relief groove 13 and is in a free extension state. When the sliding table 4 is pulled outward, the end of the spring rod 11 contacts the arc plate 14. The arc plate 14 gradually compresses the spring rod 11 and guides it to slide into the guide rail 3, avoiding the spring rod 11 from getting stuck during the movement. This structure realizes the automatic and smooth compression and release of the spring rod 11, ensuring the smoothness of the sliding table 4.

[0028] Specifically, it also includes a connecting plate 15, a slide rod 16, a second lead screw 17, and an ejector 18. The end of the guide rail 3 away from the skid 1 is connected to the connecting plate 15. The slide rod 16 is fixed between the two connecting plates 15. The second lead screw 17 is rotatably connected between the two connecting plates 15. The second lead screw 17 is a bidirectional lead screw. Both ends of the second lead screw 17 are screwed with ejector 18. The ejector 18 is slidably sleeved on the slide rod 16. The ejector 18 is used to press the spring rod 11 to disengage from the lock hole 12 to unlock.

[0029] In the above embodiments, when the maintenance is completed and the sliding table 4 needs to be pushed back to the working position, rotating the second lead screw 17 can drive the two ejector parts 18 to move synchronously towards the middle. The ejector parts 18 insert into the lock hole 12 and push out the spring rod 11, thereby separating the spring rod 11 from the lock hole 12. This structure can unlock the spring rods 11 on both sides at the same time. The operation is efficient and labor-saving, and the bidirectional lead screw ensures the symmetry and synchronicity of the left and right movements.

[0030] Specifically, it also includes wheel frame 19, roller 20 and limit block 21. Multiple wheel frames 19 are connected to both sides of the sliding table 4. Rollers 20 are rotatably connected to both the upper and lower sides of the wheel frame 19. The rollers 20 roll in the guide rail 3. The end of the guide rail 3 near the skid 1 is connected to the limit block 21. The limit block 21 cooperates with the roller 20.

[0031] In the above embodiments, the roller 20 rolls within the guide rail 3, which greatly reduces the frictional resistance between the sliding table 4 and the guide rail 3, making the push-pull operation of the heat exchanger body 2 easier and smoother. At the same time, a limit block 21 is provided at the end of the guide rail 3 near the skid 1. When the sliding table 4 is pushed back to the working position, the roller 20 abuts against the limit block 21, providing accurate limit indication and ensuring that the heat exchanger body 2 can be accurately reset to the original installation position each time, which facilitates quick docking with the pipeline.

[0032] The working principle of this utility model is as follows: Pull out the sliding table 4: First, remove the inlet and outlet pipes of the heat exchanger body 2, push the sliding table 4 outward so that it slides along the guide rail 3, the roller 20 rolls in the guide rail 3, the ends of the spring rods 11 on both sides of the sliding table 4 move out of the relief groove 13 and contact the arc plate 14. Under the guidance of the arc plate 14, the spring rods 11 are gradually compressed and slide into the guide rail 3. Maintenance position locking: Continue to pull the sliding table 4 until the end of the spring rod 11 slides to the lock hole 12 at the far end of the guide rail 3. Under its own elastic force, the spring rod 11 automatically inserts into the lock hole 12, locking the sliding table 4 in the maintenance position. The heat exchanger body 2 has been completely moved out of the skid 1 range, obtaining sufficient operating space and good visibility. Maintenance angle adjustment: Rotate the first lead screw 10 to drive the locking piece 8 to move along the guide rod 9, so that it disengages from the initial locking groove 7. Then rotate the rotating table 5 to adjust the heat exchanger body 2 to an angle that is convenient for maintenance (such as making the heat exchange plate face the operator or making the inlet and outlet pipes face the direction that is convenient for cleaning). Confirm the angle, rotate the first lead screw 10 in the opposite direction to push the locking piece 8 into the corresponding locking groove 7 and lock the rotating table 5. Maintenance: Perform maintenance operations such as plate cleaning, seal replacement or leak detection while the plate is locked. Reset: After maintenance, first rotate the first lead screw 10 to disengage the locking piece 8 from the locking groove 7, rotate the rotating table 5 back to the initial angle and relock it, use a tool to rotate the second lead screw 17, the second lead screw 17 drives the two ejector pieces 18 to move synchronously towards the middle, the ejector pieces 18 insert into the lock hole 12 and push the spring rod 11 out of the lock hole 12, release the lock of the sliding table 4, push the sliding table 4 into the skid 1 until the roller 20 abuts against the limit block 21, at this time the heat exchanger body 2 accurately returns to the working position, the spring rod 11 also falls back into the relief groove 13 and is in a free extension state, reconnect the inlet and outlet pipes to the heat exchanger body 2, and complete the entire maintenance reset process.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model.

Claims

1. A plate heat exchanger for unloading hydrogen at a hydrogen refueling station, comprising a skid-mounted unit (1) and a heat exchanger body (2), characterized in that, Also includes: Guide rail (3), both sides of the skid (1) are connected to guide rail (3); The sliding table (4) slides between the two guide rails (3); The rotating platform (5) is rotatably connected to the center position of the sliding platform (4); The heat exchanger body (2) is connected to the upper side of the rotating platform (5).

2. A plate heat exchanger for hydrogen unloading at a hydrogen refueling station according to claim 1, characterized in that, Also includes: The locking disc (6) is coaxially connected to the lower side of the sliding table (4); Locking groove (7), the locking disc (6) is provided with multiple locking grooves (7) evenly along the circumferential direction; The locking element (8) is slidably connected to one side of the sliding table (4) via the guide rod (9); The first lead screw (10) is rotatably connected to one side of the sliding table (4); The locking element (8) is screwed onto the first lead screw (10).

3. A plate heat exchanger for hydrogen unloading at a hydrogen refueling station according to claim 1, characterized in that, Also includes: Spring rod (11), spring rods (11) are movably connected to both sides of the sliding table (4); A lock hole (12) is provided at one end of the guide rail (3) away from the skid (1); The spring rod (11) corresponds one-to-one with the lock hole (12).

4. A plate heat exchanger for hydrogen unloading at a hydrogen refueling station according to claim 3, characterized in that, Also includes: The guide rail (3) has a relief groove (13) at the end near the skid (1). Arc plate (14), the relief groove (13) is connected to the arc plate (14); The arc-shaped plate (14) and the spring rod (11) are matched one-to-one.

5. A plate heat exchanger for hydrogen unloading at a hydrogen refueling station according to claim 4, characterized in that, Also includes: Connecting plate (15), the end of the guide rail (3) away from the skid (1) is connected to the connecting plate (15); The slide bar (16) is fixed between the two connecting plates (15); The second lead screw (17) is rotatably connected between the two connecting plates (15); The second lead screw (17) is a two-way lead screw; Ejector (18), both ends of the second lead screw (17) are screwed with ejector (18); The ejector (18) is slidably sleeved on the slide rod (16); The ejector (18) is used to press the spring rod (11) out of the lock hole (12) to unlock it.

6. A plate heat exchanger for hydrogen unloading at a hydrogen refueling station according to claim 1, characterized in that, Also includes: Wheel frame (19), multiple wheel frames (19) are connected to both sides of the sliding table (4). Rollers (20), the wheel frame (19) is rotatably connected to both the upper and lower sides; The roller (20) rolls within the guide rail (3); Limiting block (21), the guide rail (3) is connected to the limiting block (21) at one end near the skid (1); The limiting block (21) cooperates with the roller (20).

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