A mobile LNG skid

Abstract

The present application relates to the technical fields of LNG, especially to a mobile LNG skid device, which comprises a skid main body, the lower side of the skid main body is fixedly connected with a base, the base comprises a seat plate, the inner side of the seat plate is provided with a cavity, the left and right sides of the cavity are provided with arm grooves in front and back, the front and back arm grooves are communicated with rails, the lower part of the cavity is provided with notches on the left and right sides, the lower side of the notch is provided with a receiving groove, the left and right sides of the inside of the base are installed with lifting modules, the lifting module comprises a group of two rotating arms which are rotatably connected with the hole positions of the arm grooves, an adjustable receiving part is installed between the outer end faces of the rotating arms, in the present application, the mobile LNG skid device can be lifted and suspended according to the needs through the skid main body, the base, the lifting module and the adjustable receiving part, so that the transport vehicle can be loaded without lifting equipment.

Description

Technical Field

[0001] This invention relates to the field of LNG technology, specifically to a mobile LNG skid-mounted system. Background Technology

[0002] LNG skid-mounted refueling stations refer to LNG skid-mounted refueling stations. Skid-mounted refers to a combination of equipment frame and overall equipment. Once the equipment is assembled into a skid, it is easy to move and can provide solutions for different geographical locations. Due to factors such as land and environment, fixed refueling stations cannot meet the demand of automobiles, ships, and urban peak shaving. Mobile LNG skid-mounted refueling stations have been well developed as a supplement to fixed stations.

[0003] Existing mobile LNG skid-mounted refueling stations are generally transported and moved by vehicles. However, to transport and move them by vehicles, a crane is needed to lift them onto the chassis of the transport vehicle. This method is inconvenient and incurs additional crane costs. Therefore, a mobile LNG skid-mounted refueling station is proposed to address the above issues. Summary of the Invention

[0004] The purpose of this invention is to provide a mobile LNG skid-mounted refueling station to solve the problem that existing mobile LNG skid-mounted refueling stations need to be relocated, requiring a crane to lift them onto the floor of a transport vehicle, which is inconvenient and incurs additional crane costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A mobile LNG skid-mounted unit includes a skid-mounted main body. A base is fixedly connected to the lower side of the skid-mounted main body. The base includes a base plate, and a cavity is formed on the inner side of the base plate. Arm slots are formed on the front and rear sides of the left and right sides of the cavity, and a rail connects the front and rear arm slots. Notches are formed on the front and rear sides of the lower part of the cavity, and a storage groove is formed on the lower side of each notch. Lifting modules are installed on the left and right sides inside the base. Each lifting module includes a set of two rotating arms rotatably connected to the holes of the arm slots. An adjustable receiving part is installed between the outer end faces of the set of rotating arms. The adjustable receiving part includes a rail... The inner side of the casing has a first display plate slidably connected to the front opening of the casing, and a second display plate slidably connected to the rear opening of the casing, located inside the first display plate. Limiting blocks are fixedly connected to the upper and lower sides of the rear end of the first display plate and the front end of the second display plate. Connecting rotating seats are rotatably connected to the front end of the first display plate and the rear end of the second display plate. The connecting rotating seats are fixedly connected to the outer end face of the rotating arm. Cylinders are fixedly connected to the inner side of the holes of the rotating arm. Support seats are fixedly connected to the lower output end of the cylinders. Positioning pins are provided on the front and rear sides of the lifting module and fixedly connected to the outer end face of the base.

[0007] Preferably, the thickness of the rotating arm is the same as the height of the arm groove, the width of the rotating arm is the same as the depth of the arm groove, the end of the rotating arm away from the cavity protrudes from the base, and a gap is left between the cylinder, the support seat and the base.

[0008] Preferably, the first display panel is composed of a rotating block and side panels symmetrically arranged behind the rotating block, and the second display panel is composed of a rotating block and a middle plate on the front side of the rotating block, with the middle plate of the second display panel disposed between a set of side plates of the first display panel.

[0009] Preferably, the height of the sleeve is the same as the height of the track, the upper and lower end faces of the sleeve are in contact with the upper and lower inner walls of the track, and there is a gap between the left and right end faces of the sleeve and the left and right inner walls of the track. The positioning pin is composed of a damping sleeve, a pin plate and a limiting plate on the pin plate, and the pin plate of the positioning pin is slidably connected to the damping sleeve.

[0010] Preferably, the base has fixing parts installed on both the front and rear sides. Each fixing part includes a support plate fixedly connected to the lower inner wall of the cavity. Connecting rods are fixedly connected to both sides of the outer end face of the support plate near the positioning pin. A seat block is fixedly connected to the end of the connecting rod away from the support plate. A rotating shell located inside the notch is rotatably connected between a group of the seat blocks. An extension rod is slidably connected to the inner side of the rotating shell. A connecting plate located inside the storage groove is fixedly connected to the lower end of the extension rod. A damping pad is fixedly connected to the side of the connecting plate near the support plate. An expansion spring is fixedly connected between the support plate and the outer end face of the rotating shell. Rocker arms are fixedly connected to both the left and right sides of the rotating shell. A transmission plate is fixedly connected to the side of the rotating arm near the cavity.

[0011] Preferably, the extension rod consists of a rod body and a damping block on the upper side of the rod body. The damping block of the extension rod is disposed on the inner side of the rotating shell, and the damping block of the extension rod is in contact with the inner wall of the rotating shell. The outer end face of the extension rod is in contact with the inner wall of the lower opening of the rotating shell.

[0012] Preferably, the rocker arm has a multi-stage folding rod structure, the transmission plates are all located inside the cavity, the transmission plates have a trapezoidal plate structure, the inclined surface of the transmission plates is set downwards, and the height of the rocker arm is lower than the highest point of the inclined surface of the transmission plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In this invention, the structure consisting of a skid-mounted main body, a base, lifting modules, and an adjustable receiving part allows the base to support the skid-mounted main body of the LNG refueling station and also to house the lifting modules. When the skid-mounted main body needs to be lifted, the rotating arms of each lifting module are pulled out of their arm slots. After being pulled out, the pin plate of the positioning pin is pushed down, causing the pin plate to insert between the base plate and the rotating arm, preventing the rotating arm from self-resetting. Simultaneously, the rotation of each rotating arm will cause a set of connecting rotating seats of the adjustable receiving part to move backward, and the backward movement of the set of connecting rotating seats will also cause a backward movement between the first and second display plates connected to them. This causes the rotation of the rotating arms to unfold the adjustable receiving part, thereby completing the unfolding of the lifting module from the base, allowing the cylinder and support seat to be connected. Distributed on both sides of the base, the cylinders are extended by an external controller to push the support seat down. After the support seat contacts the ground, the reverse thrust will push the rotating arm and the adjustable bearing part to move upward, thereby lifting the base and the skid body. At this time, the transport vehicle only needs to back the vehicle under the base, reset the cylinder, and let the base move down onto the vehicle floor to complete the operation of loading the mobile LNG skid equipment into the transport vehicle. This realizes that the mobile LNG skid refueling station can be lifted and suspended as needed, so that the transport vehicle can load it without the use of lifting equipment. This solves the problem that when the existing mobile LNG skid refueling station needs to be moved, it needs to be lifted onto the floor of the transport vehicle by a crane, which is inconvenient and incurs additional crane costs.

[0015] 2. In this invention, the base, lifting module, and fixing parts are designed to house the front and rear fixing parts. When the lifting module is deployed, the rotating arm rotates out of the arm slot. The rotation of each rotating arm causes the transmission plates to rotate and displace. The guide slope of the transmission plate contacts the rocker arm, pressing it and causing it to rotate the connected rotating shell. The rotation of the rotating shell compresses the expansion spring and causes the connecting plate and damping pad to rotate out of the storage slot. When the mobile LNG skid-mounted equipment is loaded onto the transport vehicle, the connecting plates and damping pads of each fixing part are pulled down. The displacement of the extension rod in the rotating shell causes the connecting plates and damping pads to extend downwards, and then the pin plates of each positioning pin are... Pulling up to reset allows the lifting module's rotating arm to rotate back to its original position, completing the preparatory operation before fixing. By resetting the lifting module's rotating arm, the transmission plate can be reset. Without the restriction of the transmission plate, the contracted expansion spring will expand and push the rotating shell, extension rod, connecting plate, and damping pad towards the base to rotate back to their original position. At this time, a set of extended connecting plates and damping pads can clamp the bottom plate of the transport vehicle. Combined with the weight of the skid-mounted equipment itself, it can be fixed to the vehicle, realizing that the mobile LNG skid-mounted refueling station can be conveniently and quickly fixed to the transport vehicle. This solves the problem that the existing mobile LNG skid-mounted refueling stations are generally fixed to the transport vehicle by ropes or bolts, which makes disassembly and assembly inconvenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a cross-sectional view of the base of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the base of the present invention;

[0019] Figure 4 For the present invention Figure 3 A schematic diagram of the cross-sectional structure;

[0020] Figure 5 This is a schematic diagram of the lifting module of the present invention;

[0021] Figure 6 This is a cross-sectional structural diagram of the adjustable receiving part of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the fixing part of the present invention;

[0023] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point A;

[0024] Figure 9This is a cross-sectional view of the shell section of the present invention;

[0025] Figure 10 This is a schematic diagram of the positioning pin of the present invention;

[0026] Figure 11 For the present invention Figure 2 A schematic diagram of the structure after the action;

[0027] Figure 12 For the present invention Figure 1 A schematic diagram of the structure after the action.

[0028] In the diagram: 1. Skid-mounted main body; 2. Base; 21. Seat plate; 22. Cavity; 23. Arm groove; 24. Track; 25. Notch; 26. Storage slot; 3. Lifting module; 31. Rotating arm; 32. Adjustable receiving part; 321. Housing; 322. First display plate; 323. Second display plate; 324. Limiting block; 325. Connecting rotating seat; 33. Cylinder; 34. Support seat; 35. Transmission plate; 4. Fixing part; 41. Supporting upright plate; 42. Connecting rod; 43. Seat block; 44. Rotating shell; 45. Extension rod; 46. Connecting plate; 47. Damping pad; 48. Expansion spring; 49. Rocker arm; 5. Positioning pin. Detailed Implementation

[0029] Please see Figure 1-12 The present invention provides a technical solution:

[0030] A mobile LNG skid-mounted unit includes a skid-mounted body 1. A base 2 is fixedly connected to the lower side of the skid-mounted body 1. The base 2 includes a seat plate 21. A cavity 22 is formed on the inner side of the seat plate 21. Arm grooves 23 are formed on the left and right sides and the front and rear parts of the cavity 22. A track 24 connects the front and rear arm grooves 23. A notch 25 is formed on the front and rear sides of the lower part of the cavity 22. A storage groove 26 is formed on the lower side of the notch 25. Lifting modules 3 are installed on the left and right sides inside the base 2. The lifting module 3 includes a set of two rotating arms 31 that are rotatably connected to the holes of the arm grooves 23. An adjustable receiving part 32 is installed between the outer end faces of the set of rotating arms 31. The adjustable receiving part 32 includes a sleeve 321 set on the inner side of the track 24. A first display plate 322 is slidably connected to the front opening of the shell 321, and a second display plate 323 located inside the first display plate 322 is slidably connected to the rear opening of the shell 321. Limiting blocks 324 are fixedly connected to the rear end of the first display plate 322 and the front end of the second display plate 323 on both the upper and lower sides. Connecting seats 325 are rotatably connected to the front end of the first display plate 322 and the rear end of the second display plate 323. The connecting seats 325 are fixedly connected to the outer end face of the rotating arm 31. Cylinders 33 are fixedly connected to the inner side of the holes of the rotating arm 31. Support seats 34 are fixedly connected to the lower output end of the cylinders 33. Positioning pins 5 are fixedly connected to the outer end face of the base 2 on both the front and rear sides of the lifting module 3. The thickness of the rotating arm 31 is... The dimensions of the rotating arm 31 are the same as the height of the arm slot 23, and the width of the rotating arm 31 is the same as the depth of the arm slot 23. This arrangement allows the arm slot 23 to accommodate the rotating arm 31. The end of the rotating arm 31 furthest from the cavity 22 protrudes from the base 2. A gap is left between the cylinder 33, the support seat 34, and the base 2. This arrangement ensures that the cylinder 33 and the support seat 34, which move with the rotating arm 31, are not interfered with by the base 2. The first display plate 322 consists of a rotating block and side plates symmetrically arranged behind the rotating block. The second display plate 323 consists of a rotating block and a middle plate on the front side of the rotating block. The middle plate of the second display plate 323 is positioned between a set of side plates of the first display plate 322. This arrangement ensures that the first display plate 322 and the second display plate 323 are aligned. The adjustable receiving part 32 can be staggered and overlapped inside the housing 321, allowing it to be stretched and extended as much as possible. The height of the housing 321 is the same as that of the track 24. The upper and lower end faces of the housing 321 fit against the upper and lower inner walls of the track 24, while the left and right end faces of the housing 321 are spaced apart from the left and right inner walls of the track 24. This design prevents the housing 321 from moving up and down within the track 24, allowing it to move left and right. This enables the adjustable receiving part 32 to support the base 2. The positioning pin 5 consists of a damping sleeve, a pin plate, and a limiting plate on the pin plate. The pin plate of the positioning pin 5 is slidably connected to the damping sleeve. This design allows the pin plate of the positioning pin 5 to move up and down manually.

[0031] like Figure 2 , Figures 7-12As shown, fixing parts 4 are installed on both the front and rear sides of the base 2. The fixing parts 4 include a support plate 41 fixedly connected to the lower inner wall of the cavity 22. Connecting rods 42 are fixedly connected to both sides of the outer end face of the support plate 41 near the positioning pin 5. A seat block 43 is fixedly connected to the end of the connecting rod 42 away from the support plate 41. A rotating shell 44 located inside the notch 25 is rotatably connected between a group of seat blocks 43. An extension rod 45 is slidably connected to the inner side of the rotating shell 44. A connecting plate 46 located inside the storage slot 26 is fixedly connected to the lower end of the extension rod 45. A damping pad 47 is fixedly connected to the side of the connecting plate 46 near the support plate 41. An expansion spring 48 is fixedly connected between the support plate 41 and the outer end face of the rotating shell 44. Rocker arms 49 are fixedly connected to both sides of the rotating shell 44. A transmission plate 35 is fixedly connected to the side of the rotating arm 31 near the cavity 22, so that when the lifting module 3 rotates out and unfolds, it can drive the fixing parts 4 to move. When the lifting module 3 rotates and resets, the fixed part 4, which has lost interference, can be reset to clamp the bottom plate of the transport vehicle; the extension rod 45 consists of a rod body and a damping block on the upper side of the rod body. The damping block of the extension rod 45 is located inside the rotating shell 44, and the damping block of the extension rod 45 is in contact with the inner wall of the rotating shell 44. This arrangement creates damping between the extension rod 45 and the rotating shell 44. The outer end face of the extension rod 45 is in contact with the inner wall of the lower opening of the rotating shell 44. The extension rod 45 can be extended downwards under manual pulling; the rocker arm 49 has a multi-stage folding rod structure, and the transmission plates 35 are all located inside the cavity 22. The transmission plates 35 have a trapezoidal plate structure, and the inclined surface of the transmission plates 35 is set downwards. The height of the rocker arm 49 is lower than the highest point of the inclined surface of the transmission plates 35. This setting allows the inclined surface of the transmission plates 35 to contact the rocker arm 49 after rotation and displacement, and the rocker arm 49 will rotate with the displacement of the transmission plates 35 and the guidance of the inclined surface.

[0032] Workflow: The operation for moving a mobile LNG skid-mounted refueling station is as follows. Note 1: The base 2 supports the skid-mounted main body 1 of the LNG refueling station and also houses the lifting modules 3 and the fixing parts 4. First, the skid-mounted main body 1 needs to be lifted. Pull the rotating arms 31 of each lifting module 3 out of the arm slots 23. After pulling them out, push down the pin plate of the positioning pin 5 so that the pin plate inserts between the base plate 21 and the rotating arm 31, preventing the rotating arm 31 from self-resetting. Simultaneously, the rotation of each rotating arm 31 will cause a set of connecting rotating seats 325 of the adjustable receiving part 32 to move backward. This backward displacement of the connecting rotating seats 325 will also cause backward displacement between the first display plate 322 and the second display plate 323 connected to it, thus... The rotation of arm 31 causes the adjustable receiving part 32 to unfold, thereby completing the rotation and unfolding of the lifting module 3 from the base 2. This allows cylinder 33 and support seat 34 to be distributed on both sides of the base 2. At this time, the external controller controls the extension of cylinder 33 to push the support seat 34 down. After the support seat 34 contacts the ground, the reverse thrust will push the rotating arm 31 and the adjustable receiving part 32 to move upward, thereby lifting the base 2 and the skid-mounted main body 1. At this time, the transport vehicle only needs to back the vehicle under the base 2, reset cylinder 33, and let the base 2 fall onto the vehicle floor. This completes the operation of loading the mobile LNG skid-mounted equipment into the transport vehicle, allowing the mobile LNG skid-mounted refueling station to be lifted and suspended as needed, so that the transport vehicle does not need to use lifting equipment. It can then be loaded; the fixing operation of the skid-mounted equipment and the vehicle is as follows: when the lifting module 3 is deployed, the rotating arm 31 will rotate out of the arm slot 23, and the rotation of each rotating arm 31 will drive each transmission plate 35 to rotate and displace. The guide slope of the transmission plate 35 will contact the rocker arm 49, pressing the rocker arm 49 to rotate, so that the rocker arm 49 drives the connected rotating shell 44 to rotate. The rotation of the rotating shell 44 will squeeze the expansion spring 48 on the one hand, and drive the connecting plate 46 and the damping pad 47 to rotate out of the storage slot 26 on the other hand. When the mobile LNG skid-mounted equipment is loaded onto the transport vehicle, the connecting plate 46 and the damping pad 47 of each fixing part 4 are pulled down. Through the displacement of the extension rod 45 in the rotating shell 44, the connecting plate 46 and the damping pad 47 are moved down. The damping pad 47 extends downwards, and then pulls up and resets the pin plates of each positioning pin 5, so that the rotating arm 31 of the lifting module 3 can be reset and rotated, thus completing the preparatory operation before fixing. By resetting the rotating arm 31 of the lifting module 3, the transmission plate 35 can be reset. Without the restriction of the rocker arm 49 by the transmission plate 35, the contracted expansion spring 48 will expand and push the rotating shell 44, extension rod 45, connecting plate 46 and damping pad 47 to reset and rotate towards the base 2. At this time, a set of extended connecting plates 46 and damping pads 47 can clamp the bottom plate of the transport vehicle. Combined with the weight of the skid-mounted equipment itself, it can be fixed to the vehicle, so that the mobile LNG skid-mounted gas station can be conveniently and quickly fixed to the transport vehicle.

[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A mobile LNG skid-mounted unit, comprising a skid-mounted main body (1), characterized in that: A base (2) is fixedly connected to the lower side of the skid-mounted main body (1). The base (2) includes a seat plate (21). A cavity (22) is opened on the inner side of the seat plate (21). Arm grooves (23) are opened on the front and rear sides of the left and right sides of the cavity (22). A track (24) is connected between the front and rear arm grooves (23). A notch (25) is opened on the front and rear sides of the lower part of the cavity (22). A storage groove (26) is opened on the lower side of the notch (25). Lifting modules (3) are installed on the left and right sides inside the base (2). The lifting module (3) includes a set of two rotating arms (31) that are rotatably connected to the holes of the arm grooves (23). An adjustable support is installed between the outer end faces of the set of rotating arms (31). The adjustable receiving part (32) includes a housing (321) disposed inside the track (24). A first display plate (322) is slidably connected to the front opening of the housing (321), and a second display plate (323) located inside the first display plate (322) is slidably connected to the rear opening of the housing (321). Limiting blocks (324) are fixedly connected to the rear end of the first display plate (322) and the front end of the second display plate (323) on both the upper and lower sides. Connecting rotating seats (325) are rotatably connected to the front end of the first display plate (322) and the rear end of the second display plate (323). The connecting rotating seats (325) are fixedly connected to the outer end face of the rotating arm (31). The inner side of the hole of the rotating arm (31) is fixedly connected to the outer end face of the rotating arm (31). A cylinder (33) is fixedly connected to the bottom of the cylinder (33), and a support base (34) is fixedly connected to the bottom of the cylinder (33). The lifting module (3) is provided with positioning pins (5) fixedly connected to the outer end face of the base (2) on both the front and rear sides. The base (2) is provided with fixing parts (4) on both the front and rear sides. The fixing parts (4) include a support plate (41) fixedly connected to the lower inner wall of the cavity (22). The support plate (41) is fixedly connected with connecting rods (42) on both sides of the outer end face near the positioning pins (5). The connecting rods (42) are fixedly connected with a seat block (43) at the end away from the support plate (41). A rotating shell located inside the notch (25) is rotatably connected between a group of seat blocks (43). 44), an extension rod (45) is slidably connected to the inner side of the rotating shell (44). The lower end of the extension rod (45) is fixedly connected to a connecting plate (46) located inside the storage groove (26). A damping pad (47) is fixedly connected to the side of the connecting plate (46) near the supporting plate (41). An expansion spring (48) is fixedly connected between the supporting plate (41) and the outer end face of the rotating shell (44). Rockers (49) are fixedly connected to both the left and right sides of the rotating shell (44). A transmission plate (35) is fixedly connected to the side of the rotating arm (31) near the cavity (22). The extension rod (45) consists of a rod body and a damping block on the upper side of the rod body. The damping block of the extension rod (45) is located inside the rotating shell (44).The damping block of the extension rod (45) is in contact with the inner wall of the rotating shell (44), and the outer end face of the extension rod (45) is in contact with the inner wall of the lower opening of the rotating shell (44).

2. The mobile LNG skid-mounted unit according to claim 1, characterized in that: The thickness of the rotating arm (31) is the same as the height of the arm groove (23), the width of the rotating arm (31) is the same as the depth of the arm groove (23), and the end of the rotating arm (31) away from the cavity (22) protrudes from the base (2). There is a gap between the cylinder (33), the support seat (34) and the base (2).

3. A mobile LNG skid-mounted unit according to claim 1, characterized in that: The first display panel (322) is composed of a rotating block and side panels symmetrically arranged on the rear side of the rotating block. The second display panel (323) is composed of a rotating block and a middle plate on the front side of the rotating block. The middle plate of the second display panel (323) is arranged between a set of side plates of the first display panel (322).

4. A mobile LNG skid-mounted unit according to claim 1, characterized in that: The height of the sleeve (321) is the same as that of the track (24). The upper and lower end faces of the sleeve (321) are in contact with the upper and lower inner walls of the track (24). There is a gap between the left and right end faces of the sleeve (321) and the left and right inner walls of the track (24). The positioning pin (5) consists of a damping sleeve, a pin plate and a limiting plate on the pin plate. The pin plate of the positioning pin (5) and the damping sleeve are slidably connected.

5. A mobile LNG skid-mounted unit according to claim 1, characterized in that: The rocker arm (49) is a multi-stage folding rod structure. The transmission plates (35) are all located inside the cavity (22). The transmission plates (35) are trapezoidal plate structures. The inclined surface of the transmission plates (35) is set downwards. The height of the rocker arm (49) is lower than the highest point of the inclined surface of the transmission plates (35).

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