Vertical installation device for LNG storage tank outer side elastic felt

Abstract

The present application relates to LNG storage tank inner tank elastic felt installation technical field, disclose a kind of LNG storage tank inner tank outside elastic felt vertical installation device, including base, lower component, elastic felt and counterweight component, lower component is installed on the upper surface of base, one end of elastic felt and counterweight component is set on lower component, the front side of base is equipped with side groove, the inner side of side groove is equipped with adjusting assembly, the upper surface of the one end of adjusting assembly close to side groove opening is equipped with guide assembly, the lower surface of the one end of adjusting assembly close to side groove opening is equipped with limit component, the lower surface of base is equipped with bottom groove, the top end inner wall of bottom groove is equipped with lifting device;The cooperation of above structure can make elastic felt when installing on the outside of LNG storage tank inner tank vertically fall as far as possible, improve installation efficiency and installation convenience.

Description

Technical Field

[0001] This invention belongs to the field of LNG storage tank inner tank elastic felt installation technology, specifically a vertical installation device for the outer elastic felt of the inner tank of an LNG storage tank. Background Technology

[0002] The construction quality of LNG storage tank insulation engineering is the foundation for the normal operation of LNG storage tanks after commissioning. It is a vital project for the entire tank, directly affecting the operational safety and service life of the LNG storage tank. The installation of elastic felt on the outer side of the inner tank wall of the LNG storage tank involves a narrow working area, and the operation process involves high-risk working conditions such as working near edges, working at heights, and working in confined spaces, resulting in high safety risks and great operational difficulty.

[0003] The utility model with announcement number CN206072756U discloses a vertical installation device for elastic felt on the outer side of the inner tank of an LNG storage tank. It includes an elastic felt support and a sliding frame set above the inner tank of the LNG storage tank. The rolled elastic felt is horizontally and rotatably installed on the elastic felt support. The sliding frame is set on one side of the elastic felt support. The side of the sliding frame away from the elastic felt support extends out of the inner tank. The elastic felt slides down from the side of the sliding frame that extends out of the inner tank and falls vertically on the outer side of the inner tank.

[0004] In the process of developing this application, the following problems were found with this technology: When using the elastic felt under the elastic felt support in the above patent documents, the elastic felt is placed down along the outer wall of the inner tank. However, there is no counterweight structure on both sides of the elastic felt. Once a strong wind is encountered, the elastic felt at the bottom may be blown up by the wind and may scrape against the outer wall of the inner tank, causing damage. At the same time, the efficiency of placing and installing the elastic felt will also be affected without counterweight. Therefore, the overall installation efficiency and ease of installation are not good.

[0005] Therefore, we propose a vertical installation device for elastic felt on the outer side of the inner tank of an LNG storage tank. Summary of the Invention

[0006] The purpose of this invention is to provide a vertical installation device for elastic felt on the outer side of the inner tank of an LNG storage tank, so as to enable the elastic felt to fall as vertically as possible when it is installed on the outer side of the inner tank, thereby improving installation efficiency and convenience.

[0007] The technical solution adopted in this invention is as follows:

[0008] A vertical installation device for elastic felt on the outer side of an LNG storage tank includes a base, a lowering assembly, an elastic felt, and a counterweight assembly. The lowering assembly is installed on the upper surface of the base. One end of the elastic felt and the counterweight assembly are disposed on the lowering assembly. A side groove is formed on the front side of the base. An adjusting assembly is installed on the inner side of the side groove. A guide assembly is installed on the upper surface of the adjusting assembly near the opening of the side groove. A limiting assembly is installed on the lower surface of the adjusting assembly near the opening of the side groove. A bottom groove is formed on the lower surface of the base. A lifting device is installed on the inner wall of the top of the bottom groove.

[0009] The lowering assembly includes two fixing plates, which are fixedly connected to both ends of the upper surface of the base. A motor is fixedly connected to the left side of the right fixing plate, and a rotating shaft is fixedly connected to the output end of the motor. The end of the rotating shaft away from the motor is rotatably connected to the right side of the left fixing plate via a bearing. Two limiting discs are fixedly connected to the outer surfaces of both ends of the rotating shaft, and the elastic felt is wound around the middle of the outer surface of the rotating shaft.

[0010] The counterweight assembly includes a pull rope, one end of which is wound around the outer surface of the rotating shaft between the two limiting discs on the same side. The end of the pull rope away from the rotating shaft passes through the guide assembly and the limiting assembly and is fixedly connected to a clamp. A connecting rope is fixedly connected to the lower surface of the clamp, and a counterweight cylinder is fixedly connected to the end of the connecting rope away from the clamp.

[0011] In a preferred embodiment of the invention, the adjusting assembly includes an electric cylinder fixedly connected to the inner wall of the side groove, a piston rod mounted on the output end of the electric cylinder, a sliding plate fixedly connected to the end of the piston rod away from the electric cylinder, and an arc-shaped plate fixedly connected to the side of the sliding plate away from the piston rod.

[0012] In a preferred embodiment of the invention, the guide assembly includes two fixing plates 2, which are fixedly connected to both ends of the upper surface of the slide plate. Two motors 2 are fixedly connected to the right side of the right fixing plate 2. A rotating shaft 3 is fixedly connected to the output end of the motor 2. The end of the rotating shaft 3 away from the motor 2 moves through the right fixing plate 2 and is rotatably connected to the left fixing plate 2 through a bearing. A rotating cylinder is fixedly connected to the outer surface of the rotating shaft 3.

[0013] In a preferred embodiment of the invention, the limiting component includes a fixing block, which is fixedly connected to the lower surface of the arc-shaped plate, and a positioning ring is fixedly connected to the front side of the fixing block.

[0014] In a preferred embodiment of the invention, the lifting device includes a hydraulic cylinder, which is fixedly connected to the inner wall of the top of the bottom groove. A lifting column is installed at the output end of the hydraulic cylinder, and a base plate is fixedly connected to the end of the lifting column away from the hydraulic cylinder. The outer surface of the base plate is slidably connected to the inner wall of the bottom groove.

[0015] In a preferred embodiment of the invention, casters are mounted on both ends of the lower surface of the base.

[0016] In a preferred embodiment of the invention, the end of the pull cord away from the rotation axis passes through the interior of the positioning ring.

[0017] In a preferred embodiment of the invention, the input terminals of motor one and motor two are electrically connected to an external power source.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. In this invention, when installing elastic felt on the outside of the inner tank of an LNG storage tank, the entire installation device is first hoisted to the top of the inner tank using a crane. After the installation device is placed on the top of the inner tank, a portion of the elastic felt can be pre-released, passing through the guide assembly and overlapping the front end of the adjustment assembly. Then, the side of the pre-extended elastic felt is held in place by clamps. Then, the motor can be started to rotate the rotating shaft. At this time, the elastic felt and the pull rope will be extended under the action of the rotating shaft. The extended elastic felt can extend downward along the outer wall of the inner tank, and the guide assembly can guide and assist the extended elastic felt to avoid the elastic felt scraping against the top edge of the inner tank. At the same time, the counterweight cylinder can ensure the vertical state of the pull rope, the limiting assembly can position the pull rope, and the clamps hold the bottom end of the elastic felt to prevent the pull rope from being affected by wind or not falling vertically well when it is extended downward. Through the cooperation of the above structures, the elastic felt can fall as vertically as possible when installed on the outside of the inner tank of the LNG storage tank, improving installation efficiency and convenience.

[0020] 2. In this invention, before installing the elastic felt, the electric cylinder can be activated to move the piston rod outward, allowing the sliding plate and the arc plate to extend beyond the top of the LNG storage tank. This prevents the elastic felt from getting too close to the outer wall of the inner tank during lowering, thus avoiding damage to the elastic felt. Simultaneously, the arc of the arc plate also prevents the elastic felt from rubbing against the installation device. Through the combination of these structures, the distance between the elastic felt and the outer surface of the LNG storage tank when it is lowered can be flexibly adjusted, minimizing scraping of the elastic felt and improving the safety of the elastic felt installation.

[0021] 2. In this invention, after the device is hoisted to the top of the inner tank of the LNG storage tank, the device can be moved on the top of the inner tank by means of casters. When it is moved to the target position, the hydraulic cylinder can be activated to make the lifting column drive the base plate to move downward. After the downward moving base plate contacts the ground, it will lift the casters off the ground, thereby preventing the casters from accidentally sliding and causing the entire device to move, which would affect the installation of the elastic felt. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the non-elastic felt and counterweight assembly in this invention;

[0024] Figure 3 This is a right-side cross-sectional view of the present invention;

[0025] Figure 4 In this invention Figure 2 Enlarged view of point A;

[0026] Figure 5 In this invention Figure 2 Enlarged view of point B.

[0027] Explanation of reference numerals in the attached drawings: 1-Base; 2-Lowering assembly; 3-Elastic felt; 4-Counterweight assembly; 5-Adjusting assembly; 6-Guide assembly; 7-Limiting assembly; 8-Lifting device; 11-Universal wheel; 12-Bottom groove; 13-Side groove; 21-Fixing plate one; 22-Motor one; 23-Rotating shaft; 24-Limiting disc; 41-Pull rope; 42-Clamp; 43-Connecting rope; 44-Counterweight cylinder; 51-Electric cylinder; 52-Piston rod; 53-Slide plate; 54-Arc plate; 61-Fixing plate two; 62-Motor two; 63-Rotating shaft three; 64-Rotating drum; 71-Fixing block; 72-Positioning ring; 81-Hydraulic cylinder; 82-Lifting column; 83-Base plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The following will combine Figures 1-5 A detailed description is provided of a vertical installation device for elastic felt on the outer side of the inner tank of an LNG storage tank according to an embodiment of the present invention.

[0030] Reference Figure 1-5 , Example

[0031] Reference Figures 1-5 A vertical installation device for elastic felt on the outer side of an LNG storage tank includes a base 1, a lowering assembly 2, elastic felt 3, and a counterweight assembly 4. Universal wheels 11 are installed at both ends of the lower surface of the base 1. A bottom groove 12 is formed on the lower surface of the base 1. A lifting device 8 is installed on the inner wall of the top of the bottom groove 12. The lifting device 8 includes a hydraulic cylinder 81, which is fixedly connected to the inner wall of the top of the bottom groove 12. A lifting column 82 is installed at the output end of the hydraulic cylinder 81. A base plate 83 is fixedly connected to the end of the lifting column 82 away from the hydraulic cylinder 81. The outer side of the base plate 83... The surface is slidably connected to the inner wall of the bottom tank 12; specifically, when installing the elastic felt 3 on the outside of the inner tank of the LNG storage tank, the entire installation device is first hoisted to the top of the inner tank using a crane. The device can be moved on the top of the inner tank by the casters 11. When it is moved to the target position, the hydraulic cylinder 81 can be activated to make the lifting column 82 drive the base plate 83 to move downward. After the downward-moving base plate 83 contacts the ground, it will lift the casters 11 off the ground, thereby preventing the casters 11 from accidentally sliding and causing the entire device to move, affecting the installation of the elastic felt 3.

[0032] Reference Figures 1-5 The base 1 has a side groove 13 on its front side. An adjustment component 5 is installed on the inner side of the side groove 13. A guide component 6 is installed on the upper surface of the end of the adjustment component 5 near the opening of the side groove 13. The adjustment component 5 includes an electric cylinder 51, which is fixedly connected to the inner wall of the side groove 13. A piston rod 52 is installed at the output end of the electric cylinder 51. A sliding plate 53 is fixedly connected to the end of the piston rod 52 away from the electric cylinder 51. An arc-shaped plate 54 is fixedly connected to the side of the sliding plate 53 away from the piston rod 52. Specifically, before installing the elastic felt 3, the electric cylinder 51 can be activated to make the piston rod 52... The sliding plate 53 and the curved plate 54 are moved outward, allowing them to extend beyond the top of the LNG storage tank. This prevents the elastic felt 3 from getting too close to the outer wall of the inner tank during lowering, thus avoiding damage to the elastic felt 3. The curved shape of the curved plate 54 also prevents the elastic felt 3 from rubbing against the installation device. Through the coordination of these structures, the distance between the elastic felt 3 and the outer surface of the LNG storage tank when it is lowered can be flexibly adjusted, minimizing scraping of the elastic felt 3 and improving the safety of its installation.

[0033] Reference Figures 1-5The lowering component 2 is installed on the upper surface of the base 1. One end of the elastic felt 3 and the counterweight component 4 are set on the lowering component 2. The lowering component 2 includes two fixing plates 21, which are fixedly connected to both ends of the upper surface of the base 1. The left side of the right fixing plate 21 is fixedly connected to a motor 22. The output end of the motor 22 is fixedly connected to a rotating shaft 23. The counterweight component 4 includes a pull rope 41. One end of the pull rope 41 is wound around the outer surface of the rotating shaft 23 between the two limiting discs 24 on the same side. The end of the pull rope 41 away from the rotating shaft 23 passes through the guide component 6 and the limiting component 7 and is fixedly connected to a clamp 42. Specifically, when installing the elastic felt 3 on the outside of the inner tank of the LNG storage tank, a portion of the elastic felt 3 can be released in advance, passing through the guide component 6 and overlapping the front end of the adjusting component 5. Then, the clamp 42 is used to hold the side of the pre-stretched elastic felt 3.

[0034] Reference Figures 1-5 The end of the rotating shaft 23 away from the motor 22 is rotatably connected to the right side of the left end fixing plate 21 through a bearing. Two limit plates 24 are fixedly connected to the outer surfaces of both ends of the rotating shaft 23. An elastic felt 3 is wound around the middle of the outer surface of the rotating shaft 23. The input end of the motor 22 is electrically connected to an external power source. Specifically, when the motor 22 is started, the rotating shaft 23 is rotated. At this time, the elastic felt 3 and the pull rope 41 will be extended under the action of the rotating shaft 23. The extended elastic felt 3 can extend downward along the outer wall of the inner tank. The guide component 6 can guide the extended elastic felt 3 to avoid the elastic felt 3 from scratching the top edge of the inner tank.

[0035] Reference Figures 1-5 A connecting rope 43 is fixedly connected to the lower surface of the clamp 42, and a counterweight cylinder 44 is fixedly connected to the end of the connecting rope 43 away from the clamp 42. Specifically, the counterweight cylinder 44 can ensure the vertical state of the pull rope 41. A limiting component 7 is installed on the lower surface of the adjusting component 5 near the opening of the side groove 13. The limiting component 7 includes a fixing block 71, which is fixedly connected to the lower surface of the arc plate 54. A positioning ring 72 is fixedly connected to the front side of the fixing block 71. The end of the pull rope 41 away from the rotating shaft 23 passes through the interior of the positioning ring 72. Specifically, when the pull rope 41 passes through the positioning ring 72, the positioning ring 72 can limit the range of motion of the pull rope 41. The clamp 42 holds the bottom end of the elastic felt 3, which can prevent the pull rope 41 from being affected by wind or not falling vertically well when it is extended downward. Through the cooperation of the above structures, the elastic felt 3 can fall as vertically as possible when installed on the outside of the LNG storage tank, improving installation efficiency and ease of installation.

[0036] Reference Figures 1-5The guide assembly 6 includes two fixed plates 61, which are fixedly connected to both ends of the upper surface of the slide plate 53. Two motors 62 are fixedly connected to the right side of the right fixed plate 61. A rotating shaft 63 is fixedly connected to the output end of the motor 62. The end of the rotating shaft 63 away from the motor 62 moves through the right fixed plate 61 and is rotatably connected to the left fixed plate 61 through a bearing. A rotating cylinder 64 is fixedly connected to the outer surface of the rotating shaft 63. The input end of the motor 62 is electrically connected to an external power source. Specifically, when the elastic felt 3 passes through the guide assembly 6, the motor 62 can be activated to make the rotating shaft 63 drive the rotating cylinder 64 to rotate. The elastic felt 3 passing between the two rotating cylinders 64 can be well guided to avoid the elastic felt 3 scraping against the top edge of the inner tank.

[0037] The implementation principle of the vertical installation device for the outer elastic felt of the inner tank of an LNG storage tank according to this application is as follows:

[0038] When installing the elastic felt 3 on the outside of the inner tank of the LNG storage tank, the entire installation device is first hoisted to the top of the inner tank using a crane. The device can be moved on the top of the inner tank by the casters 11. After moving to the target position, the hydraulic cylinder 81 can be activated to make the lifting column 82 drive the base plate 83 to move downward. After the downward-moving base plate 83 contacts the ground, it will lift the casters 11 off the ground, thereby preventing the casters 11 from accidentally sliding and causing the entire device to move, which would affect the installation of the elastic felt 3.

[0039] Before installing the elastic felt 3, the electric cylinder 51 can be activated to move the piston rod 52 outward, causing the sliding plate 53 and the arc plate 54 to extend beyond the top of the LNG storage tank. This prevents the elastic felt 3 from getting too close to the outer wall of the inner tank during lowering, thus avoiding damage to the elastic felt 3. At the same time, the arc of the arc plate 54 also prevents the elastic felt 3 from scraping against the installation device. Through the cooperation of the above structures, the distance between the elastic felt 3 and the outer surface of the LNG storage tank when it is at the bottom can be flexibly adjusted, thereby minimizing the scraping of the elastic felt 3 and improving the safety of the installation of the elastic felt 3.

[0040] When installing the elastic felt 3 on the outside of the inner tank of the LNG storage tank, a portion of the elastic felt 3 can be pre-extended, passing through the guide assembly 6 and overlapping the front end of the adjusting assembly 5. Then, the side of the pre-extended elastic felt 3 can be held by the clamp 42. Then, the motor 22 can be started to rotate the rotating shaft 23. At this time, the elastic felt 3 and the pull rope 41 will be extended under the action of the rotating shaft 23. The extended elastic felt 3 can extend downward along the outer wall of the inner tank, and the guide assembly 6 can guide the extended elastic felt 3 to avoid the elastic felt 3 scraping against the top edge of the inner tank. At the same time, the counterweight cylinder 44 can ensure the vertical state of the pull rope 41, the limiting assembly 7 can position the pull rope 41, and the clamp 42 holds the bottom end of the elastic felt 3 to prevent the pull rope 41 from being affected by wind or not falling vertically well when it is extended downward. Through the cooperation of the above structures, the elastic felt 3 can fall as vertically as possible when installed on the outside of the inner tank of the LNG storage tank, improving installation efficiency and convenience.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical installation device for elastic felt on the outer side of an LNG storage tank, comprising a base (1), a lowering assembly (2), elastic felt (3), and a counterweight assembly (4), characterized in that: The lowering component (2) is installed on the upper surface of the base (1). One end of the elastic felt (3) and the counterweight component (4) is set on the lowering component (2). A side groove (13) is opened on the front side of the base (1). An adjustment component (5) is installed on the inner side of the side groove (13). A guide component (6) is installed on the upper surface of the adjustment component (5) near the opening of the side groove (13). A limit component (7) is installed on the lower surface of the adjustment component (5) near the opening of the side groove (13). A bottom groove (12) is opened on the lower surface of the base (1). A lifting device (8) is installed on the inner wall of the top of the bottom groove (12). The lowering assembly (2) includes two fixing plates (21), which are fixedly connected to both ends of the upper surface of the base (1). A motor (22) is fixedly connected to the left side of the right fixing plate (21). A rotating shaft (23) is fixedly connected to the output end of the motor (22). The end of the rotating shaft (23) away from the motor (22) is rotatably connected to the right side of the left fixing plate (21) through a bearing. Two limiting discs (24) are fixedly connected to the outer surfaces of both ends of the rotating shaft (23). The elastic felt (3) is wound around the middle of the outer surface of the rotating shaft (23). The counterweight assembly (4) includes a pull rope (41), one end of which is wound around the outer surface of the rotating shaft (23) between the two limiting discs (24) on the same side. The end of the pull rope (41) away from the rotating shaft (23) passes through the guide assembly (6) and the limiting assembly (7) and is fixedly connected to a clip (42). The lower surface of the clip (42) is fixedly connected to a connecting rope (43), and the end of the connecting rope (43) away from the clip (42) is fixedly connected to a counterweight cylinder (44).

2. The vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 1, characterized in that: The adjustment assembly (5) includes an electric cylinder (51), which is fixedly connected to the inner wall of the side groove (13). A piston rod (52) is installed at the output end of the electric cylinder (51). A sliding plate (53) is fixedly connected to one end of the piston rod (52) away from the electric cylinder (51). An arc plate (54) is fixedly connected to one side of the sliding plate (53) away from the piston rod (52).

3. The vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 2, characterized in that: The guide assembly (6) includes two fixed plates (61), which are fixedly connected to both ends of the upper surface of the slide plate (53). Two motors (62) are fixedly connected to the right side of the right fixed plate (61). A rotating shaft (63) is fixedly connected to the output end of the motor (62). The end of the rotating shaft (63) away from the motor (62) moves through the right fixed plate (61) and is rotatably connected to the left fixed plate (61) through a bearing. A rotating cylinder (64) is fixedly connected to the outer surface of the rotating shaft (63).

4. The vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 2, characterized in that: The limiting component (7) includes a fixing block (71), which is fixedly connected to the lower surface of the arc plate (54), and a positioning ring (72) is fixedly connected to the front side of the fixing block (71).

5. A vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 1, characterized in that: The lifting device (8) includes a hydraulic cylinder (81), which is fixedly connected to the inner wall of the top of the bottom groove (12). A lifting column (82) is installed at the output end of the hydraulic cylinder (81). A base plate (83) is fixedly connected to one end of the lifting column (82) away from the hydraulic cylinder (81). The outer surface of the base plate (83) is slidably connected to the inner wall of the bottom groove (12).

6. The vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 1, characterized in that: The base (1) has casters (11) installed at both ends of its lower surface.

7. A vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 4, characterized in that: The end of the pull rope (41) away from the rotating shaft (23) passes through the interior of the positioning ring (72).

8. A vertical installation device for the elastic felt on the outer side of the inner tank of an LNG storage tank according to claim 3, characterized in that: The input terminals of motor one (22) and motor two (62) are electrically connected to an external power source.

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