Locking system for suspended ceiling lifting of LNG (Liquefied Natural Gas) liquid storage tank

Abstract

The utility model belongs to the technical field of locking systems, and particularly relates to a locking system for lifting a suspended ceiling of an LNG (Liquefied Natural Gas) liquid storage tank, which comprises a reinforcing ring, the suspended ceiling is arranged on the reinforcing ring, and a connecting plate is arranged on the reinforcing ring. By designing the first locking piece, the screw rod, the suspended ceiling pull rod, the second locking piece, the connecting sleeve, the nut and other parts, the problems that in the suspended ceiling installation process of an existing large LNG storage tank, due to the fact that the area of an aluminum suspended ceiling is large, and the thickness of the aluminum suspended ceiling is small, the suspended ceiling pull rod inclines when stress on the suspended ceiling pull rod is not uniform in the welding process of the suspended ceiling and the suspended ceiling pull rod are solved; the stability of the whole suspended ceiling is influenced, so that the overall safety of the LNG storage tank is influenced; different parts of the device are mutually fixed and positioned in various modes, and the overall stability and reliability of the device are high; the device is easy to manufacture and convenient to disassemble and assemble, can be repeatedly used, reduces the economic cost, and meets the requirements of a large number of repeated tests.

Description

Technical Field

[0001] This utility model relates to the field of locking system technology, specifically a locking system for lifting LNG storage tanks from the ceiling. Background Technology

[0002] Currently, as LNG receiving terminals continue to operate for an extended period, the number of LNG storage tanks is also increasing. In recent years, my country's natural gas consumption has been rising annually, accelerating the construction of LNG receiving terminals. Therefore, locking systems for LNG storage tank ceiling lifting are devices that secure the LNG storage tank ceiling during lifting. For example, utility model patent CN214879819U discloses a locking device for a lifting system. The lifting system includes a mounting frame and a movable pulley device connected to the mounting frame. The movable pulley device can move in the vertical direction. The locking device includes: a locking plate disposed on the mounting frame; and a driving mechanism connected to the locking plate for driving the locking plate to switch the angle between the locking plate and the vertical direction between a first angle and a second angle. When the angle between the locking plate and the vertical direction is the first angle, the locking plate locks the movable pulley device; when the angle between the locking plate and the vertical direction is the second angle, the movable pulley device can move in the vertical direction. This device can quickly and effectively switch the movable pulley device between the working position and the maintenance position. However, in current technology, most ceiling installations during LNG storage tank construction use aluminum flat plates, circumferential reinforcing ribs, and stainless steel suspension rods. Due to the large quantities of aluminum and stainless steel required, the total weight of the ceiling structure is relatively high while its thickness is relatively thin. During the welding of the ceiling and suspension rods, the ceiling is prone to deformation, leading to uneven stress on the rods. Some rods experience excessive stress after welding, while others, before welding, are not under stress, causing some stressed rods to tilt. This affects the overall stability of the ceiling and consequently the overall safety of the LNG storage tank. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to provide a locking system for lifting the ceiling of an LNG storage tank. This system solves the problem that most ceiling installations during the construction of LNG storage tanks use aluminum flat plates, circumferential reinforcing ribs, and stainless steel suspension rods. Due to the large amount of aluminum and stainless steel required, the total weight of the ceiling structure is relatively large and the thickness is relatively thin. During the welding of the ceiling and the ceiling rods, the ceiling is prone to deformation, resulting in uneven stress on the rods. Some ceiling rods are subjected to excessive stress after welding, while others are not yet welded and are not under stress, causing some stressed ceiling rods to tilt. This affects the stability of the entire ceiling and, consequently, the overall safety of the LNG storage tank.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a locking system for lifting the ceiling of an LNG storage tank, comprising a reinforcing ring, a ceiling being mounted on the reinforcing ring, a connecting plate being mounted on the reinforcing ring, a splicing plate being contacted on the connecting plate, a first locking member being contacted on the outer side of the splicing plate, the first locking member being in contact with the connecting plate, a screw being mounted inside the connecting plate, a screw being mounted inside the splicing plate, a ceiling pull rod being mounted on the outer side of the splicing plate, a second locking member being mounted on the ceiling pull rod, the second locking member comprising a connecting sleeve, a connecting sleeve being mounted on the outer side of the ceiling pull rod, a nut being mounted on the connecting sleeve, a crossbar being threadedly connected inside the nut, a fixing member being mounted inside the connecting sleeve, a crossbar being mounted inside the fixing member, a hand-operated hoist being mounted on the fixing member, the first locking member being mounted on the hand-operated hoist, and a limit mechanism being mounted on both the connecting plate and the nut.

[0005] Preferably, the limiting mechanism includes an annular groove and a guide rod. The screw and crossbar each have an annular groove inside. A slider is slidably connected inside the annular groove. A pull rod is fixedly connected to the end of the slider away from the annular groove. A connecting seat is fixedly connected to the outer side of the connecting plate and the nut. A pull rod is slidably connected inside the connecting seat. A spring is provided on the outer side of the pull rod. A guide groove is formed inside the connecting seat. An annular sleeve is fixedly connected to the outer side of the pull rod. The annular sleeve contacts the connecting seat. A retaining groove is formed inside the annular sleeve. A retaining block is slidably connected inside the retaining groove. A sliding groove is formed inside the retaining block. A guide rod is slidably connected inside the sliding groove. An elastic sponge is provided on the outer side of the guide rod. The connecting seat is fixedly connected to the guide rod. The screw and crossbar each contact the connecting seat. The connecting seat is slidably connected to the slider. By pulling the slider, once it reaches the designated position, the screw is installed in the designated position within the connecting plate and the assembly plate. Then, the crossbar is installed in the designated position within the nut. Finally, the slider is moved to the designated position within the annular groove, thereby limiting the screw and crossbar on the device and preventing them from loosening.

[0006] Preferably, a handle is fixedly connected to the end of the pull rod away from the slider. The handle is made of iron, which makes the handle more durable.

[0007] Preferably, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the connecting seat. By designing the spring, the slider has an elastic force.

[0008] Preferably, a sliding block is slidably connected inside the guide groove, and a linear bearing is provided inside the sliding block. By designing the sliding block, a linear bearing can be connected.

[0009] Preferably, the linear bearing has a guide rod internally slidably connected, and the two ends of the guide rod are fixedly connected to the connecting seat. By designing the guide rod, components such as the slider can be guided.

[0010] Preferably, one end of the elastic sponge is fixedly connected to the card block, and the other end of the elastic sponge is fixedly connected to the connecting seat. By designing the elastic sponge, the card block has an elastic effect.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention solves the problem of uneven stress on the ceiling tie rods during the installation of large LNG storage tanks due to the large area and shallow thickness of the aluminum ceiling. This uneven stress affects the stability of the entire ceiling and consequently the overall safety of the LNG storage tank. The invention utilizes multiple methods to fix and position different parts of the device, resulting in high overall stability and reliability. Furthermore, the device is simple to manufacture, easy to assemble and disassemble, reusable, and reduces costs, while meeting the needs of numerous repetitive tests. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Enlarged view of the screw;

[0015] Figure 3 This utility model Figure 1 Side sectional view of the connecting sleeve;

[0016] Figure 4 This utility model Figure 3 Enlarged view of the connector;

[0017] Figure 5 This utility model Figure 4 Enlarged view of point A;

[0018] Figure 6 This utility model Figure 1 The first locking element side view.

[0019] In the diagram: 1. Reinforcing ring; 2. Ceiling; 3. Connecting plate; 4. Panel; 5. First locking element; 6. Screw; 7. Ceiling tie rod; 8. Second locking element; 81. Connecting sleeve; 82. Nut; 83. Crossbar; 84. Fixing element; 9. Hand chain hoist; 10. Limiting mechanism; 101. Annular groove; 102. Slider; 103. Tie rod; 104. Handle; 105. Connecting seat; 106. Spring; 107. Guide groove; 108. Sliding block; 109. Linear bearing; 1010. Guide rod; 1011. Annular sleeve; 1012. Slot; 1013. Slot; 1014. Sliding groove; 1015. Guide rod; 1016. Elastic sponge. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0021] Please see Figures 1-6 A locking system for lifting the ceiling of an LNG storage tank includes a reinforcing ring 1, a ceiling 2 mounted on the reinforcing ring 1, a connecting plate 3 mounted on the reinforcing ring 1, a splice plate 4 in contact with the connecting plate 3, a first locking element 5 in contact with the outer side of the splice plate 4, the first locking element 5 in contact with the connecting plate 3, a screw 6 inside the connecting plate 3, a screw 6 inside the splice plate 4, a ceiling pull rod 7 outside the splice plate 4, a second locking element 8 mounted on the ceiling pull rod 7, the second locking element 8 including a connecting sleeve 81, a nut 82 mounted on the connecting sleeve 81, a crossbar 83 threadedly connected inside the nut 82, a fixing element 84 inside the connecting sleeve 81, a crossbar 83 inside the fixing element 84, a hand chain hoist 9 mounted on the fixing element 84, the first locking element 5 mounted on the hand chain hoist 9, and limit mechanisms 10 mounted on both the connecting plate 3 and the nut 82.

[0022] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5The limiting mechanism 10 includes an annular groove 101 and a guide rod 1010. Annular grooves 101 are formed inside both the screw 6 and the crossbar 83. A slider 102 is slidably connected inside the annular groove 101. A pull rod 103 is fixedly connected to the end of the slider 102 away from the annular groove 101. A handle 104 is fixedly connected to the end of the pull rod 103 away from the slider 102. The handle 104 is made of iron, which makes it more durable. Connecting seats 105 are fixedly connected to the outer sides of the connecting plate 3 and the nut 82. The pull rod 103 is slidably connected inside the connecting seat 105. A spring 10 is provided on the outer side of the pull rod 103. 6. One end of the spring 106 is fixedly connected to the slider 102, and the other end of the spring 106 is fixedly connected to the connecting seat 105. By designing the spring 106, the slider 102 has an elastic force. The connecting seat 105 has a guide groove 107 inside, and a sliding block 108 is slidably connected inside the guide groove 107. A linear bearing 109 is set inside the sliding block 108. By designing the sliding block 108, the linear bearing 109 can be connected. A guide rod 1010 is slidably connected inside the linear bearing 109. Both ends of the guide rod 1010 are fixedly connected to the connecting seat 105. By designing the guide rod 1010, the slider 102 and other components can be guided.

[0023] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 An annular sleeve 1011 is fixedly connected to the outer side of the pull rod 103. The annular sleeve 1011 contacts the connecting seat 105. A slot 1012 is formed inside the annular sleeve 1011. A locking block 1013 is slidably connected inside the slot 1012. A sliding groove 1014 is formed inside the locking block 1013. A guide rod 1015 is slidably connected inside the sliding groove 1014. An elastic sponge 1016 is provided on the outer side of the guide rod 1015. One end of the elastic sponge 1016 is fixedly connected to the locking block 1013, and the other end of the elastic sponge 1016 is fixedly connected to the connecting seat 105. The elastic sponge 1016 is designed to... This makes the locking block 1013 elastic. The connecting seat 105 is fixedly connected to the guide rod 1015. The screw 6 and the cross bar 83 are both in contact with the connecting seat 105. The connecting seat 105 is slidably connected to the slider 102. By pulling the slider 102, after the slider 102 moves to the designated position, the screw 6 is installed in the designated position in the connecting plate 3 and the splice plate 4. Then the cross bar 83 is installed in the designated position in the nut 82. Finally, the slider 102 is moved to the designated position in the annular groove 101, thereby limiting the screw 6 and the cross bar 83 on the device and preventing the screw 6 and the cross bar 83 on the device from loosening.

[0024] The specific implementation process of this utility model is as follows: Before using the device, pull the handle 104 to move away from the connecting seat 105. The movement of the handle 104 drives the pull rod 103 to move, which in turn drives the annular sleeve 1011 and the slider 102 to move. The movement of the slider 102 drives the sliding block 108 to move, which in turn drives the linear bearing 109 to move. The movement of the slider 102 compresses the spring 106. The movement of the annular sleeve 1011 causes it to misalign with the locking block 1013, which in turn causes the locking block 1013 to move towards the elastic sponge 1016. The movement of the locking block 1013 drives the sliding groove 1014 to move, which in turn compresses the elastic sponge 1016. After the slider 102 and other components move to the designated position, install the screw 6 into the designated position in the connecting plate 3 and the splicing plate 4. Then, install the crossbar 83 into the designated position in the nut 82. Release the handle 104, and the elastic force of the spring 106 pushes... The slider 102 moves, which drives the sliding block 108 and the pull rod 103 to move. The sliding block 108 moves, which drives the linear bearing 109 to move. The pull rod 103 moves, which drives the annular sleeve 1011 and the handle 104 to move. The annular sleeve 1011 moves, which drives the slot 1012 to move. The annular sleeve 1011 moves and contacts the locking block 1013, which in turn causes the locking block 1013 to move towards the elastic sponge 1016. The movement of the locking block 1013 drives the sliding groove 1014 to move. The movement of the locking block 1013 compresses the elastic sponge 1016. After the slider 102 moves to the designated position in the annular groove 101, the elastic force of the elastic sponge 1016 pushes the locking block 1013 to move. The movement of the locking block 1013 drives the sliding groove 1014 to move. The locking block 1013 moves into the slot 1012, which limits the screw 6 and the crossbar 83 on the device, preventing the screw 6 and the crossbar 83 on the device from becoming loose.

[0025] This invention solves the problem that in existing large LNG storage tanks, during the installation of the ceiling 2, the large area and shallow thickness of the aluminum ceiling 2 cause uneven stress on the ceiling 7 during welding, leading to tilting of the ceiling 7 and affecting the overall stability and safety of the LNG storage tank. This invention employs multiple methods to fix and position different parts of the device, resulting in high overall stability and reliability. Furthermore, this invention is simple to manufacture, easy to assemble and disassemble, reusable, reducing economic costs, and meeting the needs of numerous repetitive tests.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking system for lifting LNG storage tanks from the ceiling, comprising a reinforcing ring (1), characterized in that: A ceiling (2) is provided on the reinforcing ring (1), a connecting plate (3) is provided on the reinforcing ring (1), a splice plate (4) is in contact with the connecting plate (3), a first locking member (5) is in contact with the outer side of the splice plate (4), the first locking member (5) is in contact with the connecting plate (3), a screw (6) is provided inside the connecting plate (3), a screw (6) is provided inside the splice plate (4), a ceiling tie rod (7) is provided on the outer side of the splice plate (4), a second locking member (8) is provided on the ceiling tie rod (7), the second locking member (8) includes a connecting rod. The connecting sleeve (81) is provided on the outer side of the ceiling tie rod (7). The connecting sleeve (81) is provided with a nut (82). The nut (82) is connected to a crossbar (83) by a thread. The connecting sleeve (81) is provided with a fixing member (84). The fixing member (84) is provided with a crossbar (83). The fixing member (84) is provided with a hand chain hoist (9). The hand chain hoist (9) is provided with a first locking member (5). The connecting plate (3) and the nut (82) are both provided with limit mechanisms (10).

2. The locking system for lifting LNG storage tanks by ceiling as described in claim 1, characterized in that: The limiting mechanism (10) includes an annular groove (101) and a guide rod (1010). The screw (6) and crossbar (83) both have annular grooves (101) inside. A slider (102) is slidably connected inside the annular groove (101). A pull rod (103) is fixedly connected to one end of the slider (102) away from the annular groove (101). A connecting seat (105) is fixedly connected to the outer sides of the connecting plate (3) and the nut (82). A pull rod (103) is slidably connected inside the connecting seat (105). A spring (106) is provided on the outer side of the pull rod (103). A guide groove (107) is provided inside the connecting seat (105). A spring (106) is fixedly connected to the outer side of the pull rod (103). There is an annular sleeve (1011) that contacts the connecting seat (105). The annular sleeve (1011) has a slot (1012) inside. A locking block (1013) is slidably connected inside the slot (1012). A sliding groove (1014) is opened inside the locking block (1013). A guide rod (1015) is slidably connected inside the sliding groove (1014). An elastic sponge (1016) is provided on the outside of the guide rod (1015). The connecting seat (105) is fixedly connected to the guide rod (1015). The screw (6) and the crossbar (83) both contact the connecting seat (105). The connecting seat (105) is slidably connected to the slider (102).

3. A locking system for lifting LNG storage tanks by ceiling as described in claim 2, characterized in that: A handle (104) is fixedly connected to the end of the pull rod (103) away from the slider (102), and the handle (104) is made of iron.

4. A locking system for lifting LNG storage tanks from the ceiling according to claim 2, characterized in that: One end of the spring (106) is fixedly connected to the slider (102), and the other end of the spring (106) is fixedly connected to the connecting seat (105).

5. A locking system for lifting LNG storage tanks from the ceiling according to claim 2, characterized in that: The guide groove (107) is slidably connected to a sliding block (108), and a linear bearing (109) is provided inside the sliding block (108).

6. A locking system for lifting LNG storage tanks from the ceiling according to claim 5, characterized in that: The linear bearing (109) is internally slidably connected to a guide rod (1010), and both ends of the guide rod (1010) are fixedly connected to the connecting seat (105).

7. A locking system for lifting LNG storage tanks from the ceiling according to claim 2, characterized in that: One end of the elastic sponge (1016) is fixedly connected to the card block (1013), and the other end of the elastic sponge (1016) is fixedly connected to the connecting seat (105).

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