LNG vehicle cylinder saturation device
Patent Information
- Application Number
- CN202521830469.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-08-27
AI Technical Summary
[0005]为了弥补以上不足，本实用新型提供了一种LNG车用气瓶打饱和装置，旨在改善现有技术中维修工序复杂、耗时长和维修成本高的问题
1、本实用新型中，在需要对换热器检修时，拆除固定螺栓二，移出卡块脱离卡扣，取下防护盖，然后握住握把拆除固定螺栓一和固定螺母，移动握把取下密封盖再取下密封垫片，通过检修管进入瓶体夹层拆下换热器取出检修，完成后再通过检修管安装到固定位置，把密封垫片和密封盖通过固定螺栓和固定螺母锁紧连接在检修管，把防护盖安装到LNG外壁，实现了简化维修工序、缩短耗时和降低维修成本。
Smart Images
Figure CN224718566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LNG technology, and in particular to a device for saturating LNG vehicle gas cylinders. Background Technology
[0002] The saturation device for LNG vehicle cylinders is a key pressure regulating device to ensure the stable operation of the LNG vehicle power system. It is used to solve the problem of insufficient medium pressure in the LNG vehicle cylinders. This device continuously delivers gas to the engine that meets the pressure requirements. It is the core of pressure regulation to cope with liquid level fluctuations and changes in ambient temperature during vehicle operation, and determines the vehicle's range stability and power output reliability.
[0003] Traditional non-internal heat exchanger type LNG is drawn from the gas cylinder by an external circulation pump, flows through the external heat exchanger to exchange heat with the heat source and then flows back to the gas cylinder. Although this structure does not require modification of the gas cylinder, the external heat exchanger and long-distance delivery pipeline are exposed to the outside of the vehicle. Affected by driving vibration, the pipeline interface may become loose due to hot and cold cycles and bumps, resulting in micro-leakage of LNG. At the same time, the external heat exchanger occupies a large space in the vehicle frame, and the heat exchange efficiency is significantly affected by the ambient temperature. In low-temperature environments, additional energy is required to maintain the heat exchange effect.
[0004] Existing internal heat exchanger types solve the space occupation and environmental interference problems of external types by integrating the heat exchanger into the outer wall of the gas cylinder inner liner. However, the heat exchanger is located in the vacuum interlayer between the gas cylinder inner liner and the outer shell, and its connection with the inner liner adopts a fixed welded structure. When the heat exchanger has coil leakage or fin deformation failure and needs to be repaired, the entire vacuum layer of the gas cylinder needs to be disassembled, which destroys the original insulation structure. After the repair, special equipment is required to re-vacuum. Not only is the disassembly and assembly process complicated, time-consuming, and costly, but repeated disassembly and assembly will also cause the gas cylinder vacuum degree to decrease, affecting the long-term insulation performance. Therefore, a saturation device for LNG vehicle gas cylinders is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a device for saturating LNG vehicle cylinders, aiming to improve the problems of complex maintenance procedures, long maintenance time and high maintenance costs in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an LNG vehicle gas cylinder saturation device, comprising a cylinder body, a support plate and a base, wherein the outer wall of the cylinder body is provided with a maintenance mechanism, the top of the support plate is provided with a fixing mechanism, the top of the base is provided with a shock-absorbing mechanism, and two mounting plates are fixedly connected to the rear top of the base, and the outer walls of the two mounting plates are provided with mounting components. The inspection mechanism includes an inspection tube, the outer wall of which is fixedly connected to the inner wall of the bottle. A sealing gasket is slidably connected to the outer wall of the inspection tube, and a sealing cap is slidably connected to the outer wall of the sealing gasket. A handle is fixedly connected to the outer wall of the sealing cap. Multiple fixing bolts are threadedly connected to the inner wall of the sealing cap, and a fixing nut is threadedly connected to the rear end of each of the multiple fixing bolts. A protective component is provided on the outer wall of the bottle.
[0007] As a further description of the above technical solution: The shock absorption mechanism includes multiple strong springs, the bottom ends of which are fixedly connected to the top of the base. Two T-shaped sliders are fixedly connected to the front side of the support plate. Guide rails are slidably connected to the inner walls of the two T-shaped sliders. Two T-shaped grooves are opened on the outer wall of the support plate. Guide rails are slidably connected to the inner walls of the two T-shaped grooves.
[0008] As a further description of the above technical solution: The fixing mechanism includes two fixing seats. The bottom of each fixing seat is fixedly connected to the top of the support plate. Two retaining rings are fixedly connected to the front side of each fixing seat. A pin is slidably connected to the inner wall of each retaining ring. A locking nut is rotatably connected to the outer wall of each pin. A fastening band is fixedly connected to the top of each pin. Two silicone rubber bands are fixedly connected to the outer wall of each fastening band. The rear ends of each fastening band are fixedly connected to the rear side of the fixing seat.
[0009] As a further description of the above technical solution: The protective assembly includes two fixing bolts, the outer walls of which are threaded to the inner wall of the bottle. The outer walls of the two fixing bolts are threaded to the same protective cap. The bottom end of the protective cap is fixedly connected to a locking block. The outer wall of the bottle is fixedly connected to a buckle. The outer wall of the bottle has a threaded groove.
[0010] As a further description of the above technical solution: The mounting assembly includes multiple mounting bolts, which are threaded onto the inner walls of two mounting plates, and mounting grooves are provided on the outer walls of both mounting plates.
[0011] As a further description of the above technical solution: The inner wall of the base is threaded with multiple fixing bolts, and the same baffle is fixedly connected to the center of the front side of both mounting plates.
[0012] As a further description of the above technical solution: The top end of the high-strength spring is fixedly connected to the bottom of the support plate, and the bottom end of the guide rail column is fixedly connected to the top of the base.
[0013] As a further description of the above technical solution: The outer walls of the two fixing bolts are respectively threaded to the inner walls of the two threaded grooves, and the outer walls of the plurality of mounting bolts are rotatably connected to the inner walls of the mounting grooves.
[0014] This utility model has the following beneficial effects: 1. In this utility model, when the heat exchanger needs to be repaired, remove the second fixing bolt, move the clip to disengage from the buckle, remove the protective cover, then hold the handle to remove the first fixing bolt and the fixing nut, move the handle to remove the sealing cover and then remove the sealing gasket, enter the cylinder interlayer through the inspection tube to remove the heat exchanger for repair, and after completion, reinstall it in the fixed position through the inspection tube, lock the sealing gasket and sealing cover to the inspection tube with the fixing bolt and fixing nut, and install the protective cover on the outer wall of the LNG, thus simplifying the maintenance process, shortening the time, and reducing the maintenance cost.
[0015] 2. In this utility model, when the LNG bottle vibrates during vehicle operation, it exerts an upward or downward force on the support plate, causing the T-shaped slider and T-shaped slide groove to move in the same direction through the corresponding guide rail column and guide rail slide column. At the same time, it exerts an upward or downward force on the strong spring. Through the elasticity of the strong spring, it also exerts a relative force on the support plate, which will offset most of the vibration and reduce the damage to the bottle body caused by vibration during vehicle operation. Attached Figure Description
[0016] Figure 1 This is a perspective view of an LNG vehicle gas cylinder saturation device proposed in this utility model; Figure 2 This is a front view of an LNG vehicle gas cylinder saturation device proposed in this utility model; Figure 3 This is an exploded view of the maintenance mechanism of an LNG vehicle cylinder saturation device proposed in this utility model; Figure 4 This is an exploded view of the protective shell of an LNG vehicle cylinder saturation device proposed in this utility model; Figure 5 This is an exploded view of the shock-absorbing structure of an LNG vehicle gas cylinder saturation device proposed in this utility model; Figure 6 This is a rear view of an LNG vehicle gas cylinder saturation device proposed in this utility model.
[0017] Legend: 1. Bottle body; 2. Support plate; 3. Base; 4. Inspection mechanism; 401. Inspection tube; 402. Sealing gasket; 403. Sealing cap; 404. Handle; 405. Fixing bolt one; 406. Fixing nut; 407. Protective components; 4071. Protective cap; 4072. Clamp; 4073. Buckle; 4074. Fixing bolt two; 4075. Threaded groove; 5. Fixing mechanism; 501. 502. Fixed base; 503. Snap ring; 504. Locking nut; 505. Fastening band; 506. Silicone rubber band; 507. Pin post; 6. Shock absorption mechanism; 601. Strong spring; 602. Guide rail post; 603. T-slider; 604. T-slide groove; 606. Guide rail slide column; 7. Fixing bolt three; 8. Mounting plate; 9. Mounting assembly; 901. Mounting groove; 902. Mounting bolt; 10. Baffle. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] See attached document Figure 1 Appendix Figure 3 and attached Figure 4 The present invention provides an embodiment of an LNG vehicle cylinder saturation device, comprising a cylinder body 1, a support plate 2, and a base 3. The outer wall of the cylinder body 1 is provided with a maintenance mechanism 4 for quick maintenance. The top of the support plate 2 is provided with a fixing mechanism 5 to fix the cylinder body 1. The top of the base 3 is provided with a shock-absorbing mechanism 6 to reduce vibration. Two mounting plates 8 are fixedly connected to the rear top of the base 3 for fixing the shock-absorbing mechanism 6. The outer walls of the two mounting plates 8 are provided with mounting components 9, which serve to fix the installation. The inspection mechanism 4 includes an inspection tube 401, which provides an inspection window. The outer wall of the inspection tube 401 is fixedly connected to the inner wall of the bottle body 1. A sealing gasket 402 is slidably connected to the outer wall of the inspection tube 401 to increase the sealing performance. A sealing cap 403 is slidably connected to the outer wall of the sealing gasket 402 to close the inspection tube 401. A handle 404 is fixedly connected to the outer wall of the sealing cap 403 to lift the sealing cap 403. Multiple fixing bolts 405 are threadedly connected to the inner wall of the sealing cap 403 to connect the inspection tube 401, the sealing gasket 402 and the sealing cap 403. The rear ends of the multiple fixing bolts 405 are threadedly connected to fixing nuts 406 for fixing. A protective component 407 is provided on the outer wall of the bottle body 1 to prevent dust and rainwater contamination. The protective component 407 includes two fixing bolts 4074 to fix the protective cap 4071. The outer walls of the two fixing bolts 4074 are threaded to the inner wall of the bottle body 1. The outer walls of the two fixing bolts 4074 are threaded to the same protective cover 4071, which serves as a protective cover. The bottom end of the protective cover 4071 is fixedly connected to a locking block 4072, which locks the protective cover 4071. The outer wall of the bottle body 1 is fixedly connected to a buckle 4073, which provides a support point for the locking block 4072 to lock onto the outer wall of the bottle body 1. The outer wall of the bottle body 1 has a threaded groove 4075, which provides space for the two fixing bolts 4074. The outer walls of the two fixing bolts 4074 are threaded to the inner walls of the two threaded grooves 4075 respectively. After the connection is tight, the protective cover 4071 is fixed to the outer wall of the bottle body 1. The outer walls of the multiple mounting bolts 902 are rotatably connected to the inner wall of the mounting groove 901, which realizes the installation function. Specifically, the maintenance mechanism 4 simplifies the maintenance process. When it is necessary to maintain the internal heat exchanger facing the maintenance tube 401 within the interlayer of the bottle body 1, first rotate the two fixing bolts 4074 to disengage them from the corresponding threaded grooves 4075, remove the protective cover 4071 to disengage it from the clip 4073, then grasp the handle 404 and rotate the multiple fixing bolts 405 to disengage the corresponding fixing nuts 406, move the handle 404 to remove the sealing cover 403, and then remove the sealing gasket 402, so that the maintenance tube 401 can be fully exposed. The arm can then enter the interlayer of the bottle body 1 through the maintenance tube 401 to disassemble and remove the heat exchanger for maintenance. After the maintenance is completed, the maintenance mechanism 4 can be used to remove the heat exchanger. After installing the heat exchanger, install the sealing gasket 402 onto the outer wall of the inspection tube 401. Then, install the sealing cover 403 by moving the handle 404. Next, install multiple fixing bolts 405 through the sealing gasket 402 and the inspection tube 401 from the outer wall of the sealing cover 403. Install fixing nuts 406 on the corresponding fixing bolts 405 and tighten them. Pick up the protective cover 4071 and push the end with the fixed connection block 4072 into the inner wall of the buckle 4073. Then, align the other end of the protective cover 4071 with the threaded groove 4075 and install the fixing bolt 4074 to fix the protective cover 4071. This allows for quick and convenient maintenance of the heat exchanger, saving time.
[0020] See attached document Figure 1 Appendix Figure 2 and attached Figure 5The damping mechanism 6 includes multiple strong springs 601, providing strong elasticity. The bottom ends of the multiple strong springs 601 are fixedly connected to the top of the base 3. Two T-shaped sliders 603 are fixedly connected to the front side of the support plate 2, allowing the support plate 2 to move up and down. The inner walls of the two T-shaped sliders 603 are slidably connected to guide rail posts 602, providing positions for the T-shaped sliders 603 to slide up and down. The outer wall of the support plate 2 has two T-shaped grooves 604, providing space for the guide rail posts 606 to slide up and down. The inner walls of the two T-shaped grooves 604 are slidably connected to guide rail posts 606, providing fixed sliding positions for the T-shaped grooves 604. The top ends of the strong springs 601 are fixedly connected to the bottom of the support plate 2, which can exert a reaction force on the support plate 2. The bottom ends of the guide rail posts 602 are fixedly connected to the top of the base 3, which can limit the highest sliding position of the T-shaped sliders 603. Specifically, the shock absorption mechanism 6 can offset most of the vibrations. During vehicle operation, due to bumps and vibrations, the bottle 1 will move downwards, exerting a downward force on the support plate 2. The support plate 2 will compress multiple strong springs 601 downwards. At the same time, the T-shaped slider 603 will slide downwards along the guide post 602, and the T-shaped slide groove 604 at the rear of the support plate 2 will also slide downwards through the guide post 606. Because the elasticity of the strong springs 601 will exert a reaction force on the support plate 2, it can offset most of the downward force of the support plate 2. On the other hand, when the bottle 1 bumps... When the bottle 1 arrives, it exerts an upward force on the support plate 2. At the same time, the T-shaped slider 603 slides upward along the guide post 602, and the T-shaped slide groove 604 at the rear of the support plate 2 also slides upward through the guide post 606. Because the elasticity of the strong spring 601 will exert a reaction force on the support plate 2, it can offset most of the upward pulling force of the support plate 2. At the same time, the baffles 10 at the top of the guide post 602 and the top of the guide post 606 restrict the upward displacement of the support plate 2, so that the bottle 1 will not detach from the support plate 2, thereby reducing the vibration of the bottle 1 during the journey.
[0021] See attached document Figure 1 Appendix Figure 2 and attached Figure 6The fixing mechanism 5 includes two fixing seats 501, which serve to fix the bottle body 1. The bottoms of the two fixing seats 501 are fixedly connected to the top of the support plate 2. Two retaining rings 502 are fixedly connected to the front of each of the two fixing seats 501, providing fixing space for the pins 506. The inner walls of the multiple retaining rings 502 are slidably connected to the pins 506, fixing the fastening bands 504. The outer walls of the multiple pins 506 are rotatably connected to the locking nuts 503, fixing the pins 506 and thus locking the fastening bands 504. The tops of the multiple pins 506 are fixedly connected to the fastening bands 504, which can lock the bottle body 1. The outer walls of the two fastening bands 504 are fixedly connected to two... A silicone rubber strip 505 serves as an anti-slip and shock absorber. The rear ends of two fastening strips 504 are fixedly connected to the rear side of the fixing base 501 to fasten the bottle body 1. Multiple fixing bolts 7 are threadedly connected to the inner wall of the base 3 to fix the base 3. The same baffle 10 is fixedly connected to the middle of the front side of the two mounting plates 8 to fix the mounting plates 8 and limit the highest displacement position of the T-shaped slide groove 604. The mounting assembly 9 includes multiple mounting bolts 902 for mounting and fixing. The multiple mounting bolts 902 are threadedly connected to the inner walls of the two mounting plates 8 respectively. The outer walls of the two mounting plates 8 are provided with mounting grooves 901 to provide installation space for the mounting bolts 902. Specifically, multiple fixing bolts 7 are inserted through the base 3 and installed onto the car. Then, multiple mounting bolts 902 are fixed onto the car through the mounting slot 901. The mounting plate 8 is used to move the bottle 1 to a suitable position on the two fixing seats 501. A silicone rubber strip 505 is installed at the bottom of the left fastening strip 504. One end of the left fastening strip 504 is fixedly connected to one end of the left fixing seat 501, so that the left fastening strip 504 and the silicone rubber strip 505 are tightly attached to the outer wall of the bottle 1. Then, the two pins 506 fixed at the other end of the left fastening strip 504 are inserted through the corresponding retaining rings 502. Then, the locking nut 503 is installed and the pins 506 are locked. Then, the right fixing seat 501 is operated in the same way, so that the bottle 1 is fixed in a suitable position on the two fixing seats 501, thereby fixing the bottle 1 onto the car.
[0022] Working principle: By removing the second fixing bolt 4074, the top of the protective cap 4071 is detached from the outer wall of the bottle body 1. Then, the bottom of the protective cap 4071 is lifted to disengage the latch 4072 from the buckle 4073. Holding the handle 404, the first fixing bolt 405 and the fixing nut 406 are removed. The sealing cap 403 is then removed, followed by the sealing gasket 402. The arm is inserted through the inspection tube 401 into the interlayer of the bottle body 1 to remove the heat exchanger for maintenance. After completion, the heat exchanger is reinstalled in its designated position within the interlayer of the bottle body 1 through the inspection tube 401. The sealing gasket 402 is then installed on the inspection tube 4071. 1. On the outer wall, install the sealing cover 403 on the outer wall of the sealing gasket 402. Insert multiple fixing bolts 405 through the inspection pipe 401, sealing gasket 402 and sealing cover 403. Install multiple corresponding fixing nuts 406 and lock them with multiple fixing bolts 405. Pick up the protective cover 4071 so that one end of the locking block 4072 pushes into the buckle 4073 and lifts the other end to face the thread groove 4075. Tighten the two fixing bolts 4074 into the corresponding thread groove 4075, thereby fixing the protective cover 4071. This shortens the maintenance time of the heat exchanger and improves the efficiency of use. Furthermore, the vibration of the bottle 1 during vehicle movement causes it to vibrate. When the vibration exerts an upward force on the bottle 1, the support plate 2 also moves upward, pulling the strong spring 601 upward. The strong spring 601 exerts a relative force on the support plate 2 through its elasticity. The T-shaped slider 603 and T-shaped groove 604 move upward through their corresponding guide posts 602 and guide rail columns 606. Under the constraint of the baffle 10 fixed at the top of the guide rail column 606 and the top of the guide post 602, the bottle 1 can be prevented from being thrown out. When the vibration exerts a downward force on the bottle 1, the support plate 2 also moves downward, pulling the strong spring 601 downward. At the same time, the T-shaped slider 603 and T-shaped groove 604 move downward through their corresponding guide posts 602 and guide rail columns 606. The strong spring 601 exerts a relative force on the support plate 2 through its elasticity, which can offset most of the vibration and achieve the effect of shock absorption.
[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A saturation device for LNG vehicle cylinders, comprising a cylinder body (1), a support plate (2), and a base (3), characterized in that: The outer wall of the bottle (1) is provided with a maintenance mechanism (4), the top of the support plate (2) is provided with a fixing mechanism (5), the top of the base (3) is provided with a shock-absorbing mechanism (6), and two mounting plates (8) are fixedly connected to the rear top of the base (3). The outer walls of the two mounting plates (8) are provided with mounting components (9). The maintenance mechanism (4) includes a maintenance tube (401), the outer wall of which is fixedly connected to the inner wall of the bottle (1), a sealing gasket (402) is slidably connected to the outer wall of the maintenance tube (401), a sealing cap (403) is slidably connected to the outer wall of the sealing gasket (402), a handle (404) is fixedly connected to the outer wall of the sealing cap (403), a plurality of fixing bolts (405) are threadedly connected to the inner wall of the sealing cap (403), and a fixing nut (406) is threadedly connected to the rear end of each of the plurality of fixing bolts (405), and a protective component (407) is provided on the outer wall of the bottle (1).
2. The LNG vehicle cylinder saturation device according to claim 1, characterized in that: The damping mechanism (6) includes multiple strong springs (601), the bottom ends of which are fixedly connected to the top of the base (3). Two T-shaped sliders (603) are fixedly connected to the front side of the support plate (2). Guide rails (602) are slidably connected to the inner walls of the two T-shaped sliders (603). Two T-shaped grooves (604) are opened on the outer wall of the support plate (2). Guide rails (606) are slidably connected to the inner walls of the two T-shaped grooves (604).
3. The LNG vehicle cylinder saturation device according to claim 1, characterized in that: The fixing mechanism (5) includes two fixing seats (501). The bottom of the two fixing seats (501) is fixedly connected to the top of the support plate (2). The front side of the two fixing seats (501) is fixedly connected to two retaining rings (502). The inner walls of the retaining rings (502) are slidably connected to pins (506). The outer walls of the pins (506) are rotatably connected to locking nuts (503). The top of the pins (506) is fixedly connected to fastening bands (504). The outer walls of the two fastening bands (504) are fixedly connected to two silicone rubber bands (505). The rear ends of the two fastening bands (504) are fixedly connected to the rear side of the fixing seat (501).
4. The LNG vehicle cylinder saturation device according to claim 1, characterized in that: The protective component (407) includes two fixing bolts (4074), the outer walls of which are threaded to the inner wall of the bottle body (1). The outer walls of the two fixing bolts (4074) are threaded to the same protective cover (4071). The bottom end of the protective cover (4071) is fixedly connected to a locking block (4072). The outer wall of the bottle body (1) is fixedly connected to a buckle (4073). The outer wall of the bottle body (1) is provided with a threaded groove (4075).
5. The LNG vehicle cylinder saturation device according to claim 1, characterized in that: The mounting assembly (9) includes a plurality of mounting bolts (902), which are threaded to the inner walls of two mounting plates (8), and the outer walls of the two mounting plates (8) are provided with mounting grooves (901).
6. The LNG vehicle cylinder saturation device according to claim 1, characterized in that: The inner wall of the base (3) is threaded with multiple fixing bolts (7), and the front middle of the two mounting plates (8) is fixedly connected with the same baffle (10).
7. The LNG vehicle cylinder saturation device according to claim 2, characterized in that: The top end of the strong spring (601) is fixedly connected to the bottom of the support plate (2), and the bottom end of the guide rail column (602) is fixedly connected to the top of the base (3).
8. The LNG vehicle cylinder saturation device according to claim 5, characterized in that: The outer walls of the two fixing bolts (4074) are threaded to the inner walls of the two threaded grooves (4075), and the outer walls of the plurality of mounting bolts (902) are rotatably connected to the inner wall of the mounting groove (901).