Rapid lifting device for emergency pump of LNG (Liquefied Natural Gas) ship and floating device

Abstract

The utility model discloses a quick lifting device for an emergency pump of an LNG (Liquefied Natural Gas) ship and a floating device, and relates to the technical field of installation and application of emergency pumps, in particular to the quick lifting device for the emergency pump of the LNG ship and the floating device. The cable fixing device comprises a connecting piece, a cable fixing device and a guide structure, a cable fixing device is assembled on the connecting piece through a bolt and a nut B; an inverted gourd-shaped hole is formed in the middle of the connecting piece and used for assembling the guide structure; the upper end and the lower end of the connecting piece are each provided with a long shaft hole in the axis direction. And the long shaft hole is used for coupling with a cable end. According to the technical scheme, the problems that in the prior art, a steel wire rope is extremely inconvenient to install above a pump well, installation time is long, and a fastener has the risk of falling into the pump well are solved.

Description

Technical Field

[0001] This utility model relates to a rapid lifting device for emergency pumps of LNG ships and floating structures, specifically to a rapid lifting device for emergency pumps of LNG ships and floating structures. Background Technology

[0002] Currently, cryogenic transfer pumps are required for transporting cryogenic media in cryogenic transport vessels and floating installations. Due to the low temperature, flammability, explosiveness, and vaporization of these media, pumps used for transporting them must be reliably sealed, have low liquid loss during operation, and possess a safe and stable structure. These pumps are difficult to design, manufacture, and test; therefore, currently, all vertical cryogenic marine submersible pumps used in China are imported, resulting in high prices and slow service response. Domestic production of vertical cryogenic marine submersible pumps would benefit cost control in LNG transportation, expand their application in propane and ethylene transport vessels, and improve the design and manufacturing capabilities of large-scale cryogenic submersible pumps in China. Currently, no domestic manufacturers research and produce cryogenic marine submersible pumps; therefore, there are no specialized domestic manufacturers producing emergency pump lifting devices that are compatible with cryogenic submersible pumps.

[0003] In existing technologies, the process of installing submersible pumps into pump wells for LNG receiving terminals, propane dehydrogenation, ethylene, and other units involves using a crane to connect the first section of steel wire rope to the pump head and lower it into the pump well. The steel wire rope is then supported by a support device. The crane then lowers the second section of steel wire rope to the top of the pump well and connects it to the first section. This process is repeated until all 15 sections of steel wire rope are installed, and the pump head is then lowered to the bottom of the pump well. The disadvantage of installing the steel wire ropes above the pump well segment by segment, and lowering the pump segment by segment, is that it is extremely inconvenient, increases installation time, and poses a risk of fasteners falling into the pump well.

[0004] In view of the problems existing in the above-mentioned existing technologies, it is necessary to study and design a new type of rapid lifting device for emergency pumps of LNG ships and floating units, so as to solve the problems existing in the existing technologies. Summary of the Invention

[0005] To address the technical problems mentioned above, such as the inconvenience of installing steel wire ropes above pump wells, which increases installation time and poses a risk of fasteners falling into the pump well, a rapid lifting device for emergency pumps of LNG ships and floating units is provided.

[0006] The technical means adopted in this utility model are as follows:

[0007] A rapid lifting device for an emergency pump of an LNG ship and floating unit includes: a connector, a cable fixing device, and a guiding structure;

[0008] Furthermore, a cable fixing device is assembled on the connector using bolts and nuts B;

[0009] Furthermore, the connector has a gourd-shaped hole in the middle for assembling the guide structure;

[0010] Furthermore, each of the upper and lower ends of the connector is provided with a long shaft hole along the axial direction;

[0011] Furthermore, the elongated bore is used for axial connection with the cable end.

[0012] Furthermore, the cable fixing device includes: clips and pressure plates;

[0013] Furthermore, the clip is a rectangular body with a certain thickness, on which multiple slots and bolt holes for installing cables are evenly distributed;

[0014] Furthermore, the pressure plate is a thin rectangular plate with the same external structure as the clip, and bolt holes with the same shape and position as the bolt holes on the clip are provided on it;

[0015] Furthermore, after multiple cables are inserted into the slots of the clips, the pressure plate is covered, and the clips and pressure plate with the cables are fixed to the connecting plate by bolts and nuts A and B.

[0016] Furthermore, the guide structure is horizontally assembled onto the connector via a quick-connect method, forming a cross-shaped connection with the connector.

[0017] Furthermore, the guiding structure includes: a guide rod and a guide wheel;

[0018] Furthermore, bolt and nut B are installed at the position opposite to the hoist hole in the middle of the guide rod. There is a gap between the nut of bolt and nut B and the guide rod, which is slightly larger than the thickness of the connecting part. The nut of bolt and nut B is inserted into the large hole of the hoist hole and moved downward to be engaged into the pin hole to complete the installation.

[0019] Furthermore, the guide rod and the connector form a cross-shaped connection structure;

[0020] Furthermore, each end of the guide rod is equipped with a guide wheel;

[0021] Furthermore, the guide wheel contacts the inner wall of the pump well, serving as a guide for sliding.

[0022] Furthermore, the elongated hole on the connector is also used for connecting to a hook.

[0023] The working process of this utility model is as follows:

[0024] During pump head installation, attach the crane hook to the first lifting device and move it to the pump well. Remove the crane hook from the first lifting device. Attach the crane hook to the second lifting device and move it to the pump well. Lower the wire rope and pump head into the pump well. Repeat this process until all 15 sections of wire rope and pump head are lowered to the bottom of the pump well.

[0025] This utility model allows for the pre-connection of steel wire ropes before pump hoisting, and through... Figure 3 , Figure 4 The quick-connect device shown allows for rapid installation of the pump head, and eliminates the need to disassemble or assemble fasteners on the pump well during hoisting, thus preventing fasteners from falling into the pump well during the connection of the wire rope.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The rapid lifting device for emergency pumps of LNG ships and floating units provided by this utility model allows the wire rope to be pre-installed on the connector. When using a hook for lifting on the pump well, the wire rope does not need to be removed from the connector. Simply shift the wire rope to the side to install the hook, thus reducing the installation time of the wire rope.

[0028] 2. The LNG ship and floating device emergency pump quick lifting device provided by this utility model does not require disassembling and assembling fasteners on the pump well during the lifting process, thus eliminating the risk of fasteners being hoisted into the pump well during the connection of steel wire ropes;

[0029] 3. The LNG ship and floating device emergency pump quick lifting device provided by this utility model has a guide and a connecting part connected by a quick connection. Bolts and nuts are pre-installed on the connecting part. When assembling the connecting part and the guide part, the nut is inserted into the large hole of the connecting part. The connecting part is installed in the gap between the nut and the guide part. After the connecting part is lifted, the guide part falls into the small hole on the connecting part that communicates with the large hole.

[0030] 4. The LNG ship and floating unit emergency pump quick lifting device provided by this utility model can realize the quick installation of the lifting device without disassembling the fasteners, thus eliminating the risk of fasteners falling into the pump well during the lifting process.

[0031] 5. The LNG ship and floating device emergency pump quick lifting device provided by this utility model can connect the steel wire rope in advance before pump lifting. Through the quick connection device, the pump head can be quickly installed. Moreover, it is not necessary to disassemble and install fasteners on the pump well during the lifting process, thus preventing fasteners from being hoisted into the pump well during the connection of the steel wire rope.

[0032] In summary, the technical solution of this utility model solves the problems of the prior art, such as the inconvenience of installing steel wire ropes above pump wells, the long installation time, and the risk of fasteners falling into the pump well. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This utility model Figure 1 AA view;

[0036] Figure 3 A schematic diagram of the structure of this utility model when using a hook to lift the installed wire rope;

[0037] Figure 4 This is a schematic diagram of the wire rope return structure during normal use of this utility model;

[0038] Figure 5 This is a schematic diagram of the assembly process of the guide rod and connector of this utility model;

[0039] Figure 6 This is a schematic diagram of the hoisting state of this utility model.

[0040] In the diagram: 1. Guide rod; 2. Connector; 3. Cable; 4. Guide wheel; 5. Clamp; 6. Pressure plate; 7. Bolt and nut A; 8. Bolt and nut B. Detailed Implementation

[0041] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0046] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0047] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0048] As shown in the figure, this utility model provides a rapid lifting device for emergency pumps of LNG ships and floating units, including: a connector 2, a cable fixing device and a guide structure; the cable fixing device is assembled on the connector 2 by bolts and nuts B8; the connector 2 has a hoist hole in the middle for assembling the guide structure; and each of the upper and lower ends of the connector 2 has a long shaft hole along the axial direction.

[0049] The elongated hole is used for axial connection with the end of cable 3.

[0050] The cable fixing device includes: a clamp 5 and a pressure plate 6; the clamp 5 is a rectangular body with a certain thickness, on which multiple slots and bolt holes for installing cables are evenly distributed; the pressure plate 6 is a thin rectangular plate with the same shape and position as the bolt holes on the clamp 5; after multiple cables are clamped in the slots of the clamp 5, the pressure plate 6 is covered, and the clamp 5 and pressure plate 6 with the cables are fixed to the connecting plate 2 by bolts and nuts A7 and B8.

[0051] The guide structure is horizontally assembled onto the connector 2 via a quick-connect method, forming a cross-shaped connection with the connector 2.

[0052] The guiding structure includes: a guide rod 1 and guide wheels 4; a bolt and nut B8 is installed at the middle of the guide rod 1 opposite to the inverted gourd hole, with a gap between the nut of bolt and nut B8 and the guide rod 1, the gap being slightly larger than the thickness of the connecting piece 2; the nut of bolt and nut B8 is inserted into the large hole of the inverted gourd hole and moved downwards to be engaged into the pin hole to achieve installation; the guide rod 1 and the connecting piece 2 are connected in a cross structure; each end of the guide rod 1 is equipped with a guide wheel 4; the guide wheel 4 contacts the inner wall of the pump well and plays a guiding sliding role.

[0053] The elongated shaft hole on connector 2 is also used for connecting to a hook.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rapid lifting device for emergency pumps of LNG ships and floating units, characterized in that: The LNG ship and floating unit emergency pump rapid lifting device includes: connector (2), cable fixing device and guide structure; The cable fixing device is assembled on the connector (2) by bolts and nuts B (8); The connector (2) is provided with a gourd-shaped hole in the middle for assembling a guide structure; The connector (2) is provided with a long shaft hole along the axial direction at both its upper and lower ends; The elongated hole is used for axial connection with the end of the cable (3).

2. The rapid lifting device for emergency pumps of LNG ships and floating units according to claim 1, characterized in that: The cable fixing device includes: a clip (5) and a pressure plate (6); The clip (5) is a rectangular body with a certain thickness, and multiple slots and bolt holes for installing cables are evenly distributed on it; The pressure plate (6) is a thin rectangular plate with the same shape and structure as the clip (5), and bolt holes with the same shape and position as the bolt holes on the clip (5) are provided on it; After multiple cables are installed in the slots of the clip (5), the pressure plate (6) is covered, and the clip (5) and pressure plate (6) with the cables are fixed to the connector (2) by bolts and nuts A (7) and B (8).

3. The rapid lifting device for emergency pumps of LNG ships and floating units according to claim 1, characterized in that: The guide structure is horizontally assembled onto the connector (2) via a quick connection, forming a cross-shaped connection with the connector (2).

4. The rapid lifting device for emergency pumps of LNG ships and floating units according to claim 3, characterized in that: The guide structure includes: a guide rod (1) and a guide wheel (4); The guide rod (1) is fitted with a bolt and nut B (8) at the position opposite to the hoist hole. There is a gap between the nut of the bolt and nut B (8) and the guide rod (1), which is slightly larger than the thickness of the connector (2). The nut of the bolt and nut B (8) is inserted into the large hole of the hoist hole and moved downward to be inserted into the pin hole to achieve installation. The guide rod (1) and the connector (2) are connected in a cross shape; Each end of the guide rod (1) is equipped with a guide wheel (4); The guide wheel (4) is in contact with the inner wall of the pump well, and plays a guiding and sliding role.

5. The rapid lifting device for emergency pumps of LNG ships and floating units according to any one of claims 2 and 4, characterized in that: The elongated shaft hole on the connector (2) is also used for connecting to the hook.

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