Joint for connecting LNG (Liquefied Natural Gas) storage tank and side wall elevator

Abstract

The invention discloses a joint for connecting an LNG (Liquefied Natural Gas) storage tank and a side wall elevator, the joint for connecting the LNG storage tank and the side wall elevator comprises a storage tank wall embedded part and a first lug plate, the first lug plate is connected to the storage tank wall embedded part, and the two sides of the first lug plate are respectively connected with a first stiffening cover plate and a second stiffening cover plate; the end of the first stiffening cover plate and the end of the second stiffening cover plate are connected with a storage tank wall embedded part. The first lug plate is hinged to the second lug plate, a first stiffening rib, a second stiffening rib and a third stiffening rib are arranged on the second lug plate at intervals, the second lug plate is fixedly connected with a lug plate end plate, the lug plate end plate is arranged on the elevator frame steel beam, and an end plate stiffening rib is connected between the elevator frame steel beam and the lug plate end plate. The joint for connecting the LNG storage tank and the side wall elevator has the beneficial effects of being high in strength and structure stability, pin shaft connection has the rotating performance, accumulated energy caused by the settlement difference of the storage tank and an elevator foundation can be absorbed, and the overall structure is prevented from being collapsed and damaged.

Description

Technical Field

[0001] The invention belongs to the field of offshore petroleum and chemical engineering, and in particular relates to a node for connecting an LNG storage tank with a side wall elevator. Background Art

[0002] LNG storage tanks are important media with functions such as receiving, storing, and transporting in the clean energy liquefied natural gas industry chain. Elevators are key facilities for on-site personnel to go up and down the storage tanks in their daily work. In conventional projects, the elevator steel frame and the LNG storage tank have their own independent foundations. Due to the differences in the nodes and loads between the two, there is a risk of large settlement differences in the subsequent production process.

[0003] At present, the elevator steel frames and LNG storage tanks in the LNG receiving stations that have been put into operation or are under construction mostly adopt the typical rigid or hinged connection scheme of steel structures in the construction industry; when there is a large settlement difference, the settlement energy gradually accumulated by the traditional connection scheme will impose huge bending moments and shear forces on the connecting steel beams, posing a serious threat to the structural safety. At the same time, due to its own structural characteristics, the elevator steel frame may be subjected to extreme wind or earthquake from any direction during its entire life cycle, and the connection is threatened by large lateral loads.

[0004] Therefore, it is urgent to design a node for connecting the LNG storage tank and the side wall elevator to solve the problem of uneven settlement of the LNG storage tank and the side wall elevator mentioned above. Summary of the invention

[0005] In order to solve the technical problem mentioned in the background technology that the elevator steel frame and the LNG storage tank have their own independent foundations, and due to differences in their nodes and loads, there is a large settlement difference in the subsequent production process, a node for connecting the LNG storage tank and the side wall elevator is provided to solve the problem of uneven settlement of the LNG storage tank and the side wall elevator.

[0006] To achieve the above purpose, the specific technical solution of the node connecting the LNG storage tank and the side wall elevator of the present invention is as follows: A node for connecting an LNG storage tank to a side wall elevator comprises a storage tank wall embedded part and a first ear plate, wherein the first ear plate is connected to the storage tank wall embedded part, a first stiffening cover plate and a second stiffening cover plate are respectively connected to both sides of the first ear plate, and ends of the first stiffening cover plate and the second stiffening cover plate are connected to the storage tank wall embedded part; the first ear plate is hinged to the second ear plate, a first stiffening rib, a second stiffening rib and a third stiffening rib are arranged on the second ear plate at intervals, the second ear plate is fixedly connected to an ear plate end plate, the ear plate end plate is arranged on an elevator frame steel beam, and an end plate stiffening rib is connected between the elevator frame steel beam and the ear plate end plate.

[0007] Furthermore, the first ear plate is vertically welded to the embedded part of the tank wall, a first stiffening cover plate is welded to one side of the first ear plate, and a second stiffening cover plate is welded to the side of the first ear plate away from the first stiffening cover plate.

[0008] Furthermore, the ends of the first stiffening cover plate and the second stiffening cover plate are vertically welded to the embedded parts of the tank wall.

[0009] Furthermore, a second ear plate is vertically welded on the ear plate end plate, a first stiffening rib is welded on one side of the second ear plate, a third stiffening rib is welded on the side of the second ear plate away from the first stiffening rib, and the ends of the first stiffening rib and the third stiffening rib are welded on the ear plate end plate.

[0010] Furthermore, a second stiffening rib is welded on the second ear plate, the second stiffening rib is located between the first stiffening rib and the third stiffening rib, and the end of the second stiffening rib is welded to the ear plate end plate.

[0011] Furthermore, the ear plate end plate is fixedly connected to the elevator frame steel beam on one side away from the second ear plate, and the elevator frame steel beam is welded with end plate stiffening ribs at intervals.

[0012] Furthermore, the ends of the two end plate stiffening ribs are welded to the ear plate end plates.

[0013] Furthermore, the two end plate stiffening ribs are respectively on the same horizontal line as the first stiffening rib and the third stiffening rib.

[0014] Furthermore, a circular hole is opened in the middle of the first ear plate and the second ear plate, and the pin passes through the circular holes of the first ear plate and the second ear plate, so that the first ear plate and the second ear plate are hinged.

[0015] Furthermore, a circular hole reinforcing plate is provided on the circular hole of the second ear plate on a side away from the first ear plate.

[0016] The node connecting the LNG storage tank and the sidewall elevator of the present invention has the following advantages: By positioning and installing the embedded parts of the tank wall connected to the first ear plate in advance when pouring the tank wall, the welding of the second ear plate and the ear plate end plate is completed when the elevator frame is prefabricated in sections; when assembling and welding the elevator frame, the first ear plate is inserted into the two second ear plates, and the concentric holes of the two are aligned and the pin is inserted to complete the connection. This can reduce the welding workload during high-altitude operations, and is also more convenient for installation and shortens the operation time. The present application has the characteristics of high strength and strong structural stability. The pin connection has rotation performance, which can absorb the accumulated energy caused by the settlement difference between the tank and the elevator foundation, and avoid the overall collapse and damage of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the node connecting the LNG storage tank and the side wall elevator of the present invention.

[0018] Description of the markings in the figure: 1. The first stiffening cover plate; 2. The first ear plate; 3. The second stiffening cover plate; 4. The embedded parts of the tank wall; 5. The circular hole reinforcement plate; 6. The first stiffening rib; 7. The second stiffening rib; 8. The third stiffening rib; 9. The second ear plate; 10. The ear plate end plate; 11. The end plate stiffening rib; 12. The elevator frame steel beam. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0021] Please refer to the attached Figure 1 The node where the LNG storage tank of the present invention is connected to the sidewall elevator is described.

[0022] like Figure 1 As shown, the node where the LNG storage tank and the side wall elevator are connected in the present invention includes a tank wall embedded part 4 and a first ear plate 2, the first ear plate 2 is connected to the tank wall embedded part 4, the first ear plate 2 is respectively connected to the first stiffening cover plate 1 and the second stiffening cover plate 3 on both sides, and the ends of the first stiffening cover plate 1 and the second stiffening cover plate 3 are connected to the tank wall embedded part 4; the first ear plate 2 is hinged to the second ear plate 9, and the second ear plate 9 is provided with a first stiffening rib 6, a second stiffening rib 7 and a third stiffening rib 8 at intervals, the second ear plate 9 is fixedly connected to an ear plate end plate 10, the ear plate end plate 10 is arranged on the elevator frame steel beam 12, and an end plate stiffening rib 11 is connected between the elevator frame steel beam 12 and the ear plate end plate 10.

[0023] By positioning and installing the embedded parts 4 of the tank wall connected to the first ear plate 2 in advance when pouring the tank wall, the welding of the second ear plate 2 and the ear plate end plate 10 is completed when the elevator frame is prefabricated in sections; when the elevator frame is assembled and welded, the first ear plate 2 is inserted into the two second ear plates 9, and the concentric holes of the two are aligned and the pin is inserted to complete the connection. This can reduce the welding workload during high-altitude operations, and is also more convenient for installation and shortens the operation time. The present application has the characteristics of high strength and strong structural stability. The pin connection has a rotating performance, which can absorb the accumulated energy caused by the settlement difference between the tank and the elevator foundation, and avoid the overall collapse and damage of the structure.

[0024] Further, if Figure 1 As shown, the first ear plate 2 is vertically welded to the embedded part 4 of the tank wall, the first stiffening cover plate 1 is welded to one side of the first ear plate 2, and the second stiffening cover plate 3 is welded to the side of the first ear plate 2 away from the first stiffening cover plate 1; the ends of the first stiffening cover plate 1 and the second stiffening cover plate 3 are vertically welded to the embedded part 4 of the tank wall; the second ear plate 9 is vertically welded to the ear plate end plate 10, the first stiffening rib 6 is welded to one side of the second ear plate 9, and the third stiffening rib 8 is welded to the side of the second ear plate 9 away from the first stiffening rib 6, and the ends of the first stiffening rib 6 and the third stiffening rib 8 are welded to the ear plate end plate 10.

[0025] In the present embodiment, preferably, the first ear plate 2 is vertically welded to the embedded part 4 of the tank wall, the first stiffening cover plate 1 is welded above the first ear plate 2, and the second stiffening cover plate 3 is welded below the first ear plate 2. The first stiffening cover plate 1 and the second stiffening cover plate 3 are the same in shape and size, and the ends of the first stiffening cover plate 1 and the second stiffening cover plate 3 are vertically welded to the embedded part 4 of the tank wall, thereby fixing the first ear plate 2.

[0026] A second ear plate 9 is vertically welded to the ear plate end plate 10. Preferably, the first ear plate 2 and the second ear plate 9 are arranged in the horizontal direction, a first stiffening rib 6 is welded to the upper part of the second ear plate 9 body, and a third stiffening rib 8 is welded to the lower part of the second ear plate 9 body. The ends of the first stiffening rib 6 and the third stiffening rib 8 are welded to the ear plate end plate 10 to fix the second ear plate 9 and strengthen the overall rigidity.

[0027] Further, if Figure 1 As shown, a second stiffening rib 7 is welded to the second ear plate 9, the second stiffening rib 7 is located between the first stiffening rib 6 and the third stiffening rib 8, and the end of the second stiffening rib 7 is welded to the ear plate end plate 10; the ear plate end plate 10 is fixedly connected to the elevator frame steel beam 12 on the side away from the second ear plate 9, and the elevator frame steel beam 12 is welded with end plate stiffening ribs 11 at intervals; the ends of the two end plate stiffening ribs 11 are welded to the ear plate end plate 10.

[0028] In this embodiment, preferably, the second stiffening rib 7 is welded to the second ear plate 9, the welding point of the second stiffening rib 7 is located between the first stiffening rib 6 and the third stiffening rib 8, and the first stiffening rib 6, the second stiffening rib 7 and the third stiffening rib 8 are all welded along the length direction of the second ear plate 9.

[0029] Preferably, the ear plate end plate 10 is welded to the elevator frame steel beam 12, and end plate stiffening ribs 11 are welded to the elevator frame steel beam 12 at intervals, and the ends of the two end plate stiffening ribs 11 are welded to the ear plate end plate 10, thereby making the second ear plate 9 stably connected to the elevator frame steel beam 12.

[0030] Further, if Figure 1 As shown, the two end plate stiffening ribs 11 are respectively on the same horizontal line with the first stiffening rib 6 and the third stiffening rib 8; circular holes are opened in the middle of the first ear plate 2 and the second ear plate 9, and the pin passes through the circular holes of the first ear plate 2 and the second ear plate 9 to hinge the first ear plate 2 and the second ear plate 9; a circular hole reinforcement plate 5 is provided on the circular hole of the second ear plate 9 away from the first ear plate 2.

[0031] In the present embodiment, circular holes are provided in the middle of the first ear plate 2 and the second ear plate 9. Preferably, two second ear plates 9 are provided on both sides of the first ear plate 2. The two second ear plates 9 are connected to the elevator frame steel beam 12 at intervals through ear plate end plates 10 respectively. After the three holes are concentrically aligned, the pins pass through the circular holes of the first ear plate 2 and the second ear plate 9 in sequence, so that the first ear plate 2 and the second ear plate 9 are hingedly connected; a circular hole reinforcing plate 5 is provided on the circular hole of the second ear plate 9 away from the first ear plate 2 to strengthen the rigidity of the second ear plate 9 structure.

[0032] The node based on the connection between the LNG storage tank and the side wall elevator is positioned and installed by pre-positioning the embedded part 4 of the tank wall connected to the first ear plate 2 in advance when the tank wall is cast, and the welding of the second ear plate 9 and the ear plate end plate 10 is completed when the elevator frame is prefabricated in sections; when the elevator frame is assembled and welded, the first ear plate 2 is inserted into the two second ear plates 9, and the concentric holes of the two are aligned and the pin is inserted to complete the connection, which can reduce the welding workload in high-altitude operations, and is also more convenient for installation and shortens the operation time. The present application has the characteristics of high strength and strong structural stability. The pin connection has rotation performance, which can absorb the accumulated energy caused by the settlement difference between the tank and the elevator foundation, and avoid the overall collapse and damage of the structure; the mechanical calculation model of the node is that 5 degrees of freedom are constrained in 6 degrees of freedom and 1 degree of freedom is not constrained, so as to realize the rotation of the uneven settlement of the LNG storage tank and the side wall elevator frame.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A node for connecting an LNG storage tank to a sidewall elevator, characterized in that: It includes a tank wall embedded part and a first ear plate, the first ear plate is connected to the tank wall embedded part, the first stiffening cover plate and the second stiffening cover plate are respectively connected to the two sides of the first ear plate, and the ends of the first stiffening cover plate and the second stiffening cover plate are connected to the tank wall embedded part; The first ear plate is hinged to the second ear plate, the second ear plate is provided with a first stiffening rib, a second stiffening rib and a third stiffening rib at intervals, the second ear plate is fixedly connected to an ear plate end plate, the ear plate end plate is arranged on the elevator frame steel beam, and an end plate stiffening rib is connected between the elevator frame steel beam and the ear plate end plate.

2. The node for connecting the LNG storage tank to the sidewall elevator according to claim 1, characterized in that: The first ear plate is vertically welded to the embedded part of the storage tank wall, a first stiffening cover plate is welded to one side of the first ear plate, and a second stiffening cover plate is welded to the side of the first ear plate away from the first stiffening cover plate.

3. The node for connecting the LNG storage tank to the sidewall elevator according to claim 2, characterized in that: Ends of the first stiffening cover plate and the second stiffening cover plate are vertically welded to the embedded parts of the tank wall.

4. The node for connecting the LNG storage tank to the sidewall elevator according to claim 1, characterized in that: A second ear plate is vertically welded on the ear plate end plate, a first stiffening rib is welded on one side of the second ear plate, a third stiffening rib is welded on the side of the second ear plate away from the first stiffening rib, and the ends of the first stiffening rib and the third stiffening rib are welded on the ear plate end plate.

5. The node for connecting the LNG storage tank to the sidewall elevator according to claim 4, characterized in that: A second stiffening rib is welded on the second ear plate, the second stiffening rib is located between the first stiffening rib and the third stiffening rib, and an end of the second stiffening rib is connected to the ear plate end plate by welding.

6. The node for connecting the LNG storage tank to the sidewall elevator according to claim 5, characterized in that: The side of the ear plate end plate away from the second ear plate is fixedly connected to the elevator frame steel beam, and the elevator frame steel beam is welded with end plate stiffening ribs at intervals.

7. The node for connecting the LNG storage tank to the sidewall elevator according to claim 6, characterized in that: The ends of the two end plate stiffening ribs are welded to the ear plate end plates.

8. The node for connecting the LNG storage tank to the sidewall elevator according to claim 8, characterized in that: The two end plate stiffening ribs are respectively on the same horizontal line as the first stiffening rib and the third stiffening rib.

9. The node for connecting the LNG storage tank to the sidewall elevator according to claim 1, characterized in that: A circular hole is opened in the middle of the first ear plate and the second ear plate, and the pin passes through the circular holes of the first ear plate and the second ear plate, so that the first ear plate and the second ear plate are hinged.

10. The node for connecting the LNG storage tank to the sidewall elevator according to claim 9, characterized in that: A circular hole reinforcing plate is provided on the circular hole of the second ear plate at a side away from the first ear plate.

Images