Emergency simulation pump device for LNG carrier pump tower

Abstract

The utility model discloses a kind of LNG ship pump tower emergency simulation pump device, comprising: two panels, and multiple tubular connecting pieces, two the panel is vertically direction center alignment, and is connected by multiple tubular connecting pieces;The panel includes an inner ring assembly and an outer ring assembly matched with inner ring assembly;The inner ring assembly includes inner ring body, the annular flange around the inner ring body and connected with inner ring body;The outer ring assembly is connected with the annular flange. Use the utility model to carry out emergency pump through simulation test, the assembly gap between emergency pump pipe on pump tower and emergency pump can be accurately controlled in design tolerance range, and the utility model is convenient to install, adjust or maintain, improve pump tower manufacturing efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of advanced shipbuilding technology, and in particular to an emergency simulation pump device for an LNG ship pump tower. Background Technology

[0002] On LNG (liquefied natural gas) ships, the emergency pump pipe is a main pipe within the pump tower's triangular mast structure, constructed from multiple stainless steel pipes with outer diameters of φ610mm (wall thickness 12.5mm) and φ627mm (wall thickness 21mm). Since the pump tower is hoisted onto the ship after final inspection and acceptance, and the emergency pump is transmitted to the ship via the emergency pump pipe on the pump tower, it is crucial to ensure that the emergency pump is properly connected to its corresponding emergency pump pipe. However, existing technologies lack effective simulation and verification methods, posing significant installation risks.

[0003] The statements herein provide only background information relating to this invention and do not necessarily constitute prior art. Utility Model Content

[0004] The purpose of this invention is to provide an emergency simulation pump device for LNG ship pump towers, in order to simulate and verify that the emergency pump can pass smoothly through the emergency pump pipe.

[0005] To achieve the above objectives, this utility model provides an emergency simulation pump device for an LNG ship pump tower, comprising: two panels and multiple tubular connectors, wherein the two panels are aligned vertically and connected by multiple tubular connectors; each panel includes an inner ring assembly and an outer ring assembly that mates with the inner ring assembly; The inner ring assembly is an integral structure, including an inner ring body and an annular flange surrounding and connected to the inner ring body; the outer ring assembly is connected to the annular flange. At the connection between the inner ring body and the annular flange, a plurality of mounting holes are provided at equal intervals along the circumference. Part of the mounting holes penetrates the outer edge of the inner ring body, and another part penetrates the inner edge of the annular flange. The outer ring assembly includes multiple identical arc segments; the number of arc segments, the number of mounting holes, and the number of tubular connectors are all equal. Each of the tubular connectors is fitted at both ends into the mounting holes on the two panels, thereby connecting the two panels; each arc segment is connected to the arc-shaped area between every two mounting holes on the annular flange.

[0006] Optionally, the inner ring assembly further includes a connecting portion, which is arranged radially along the inner ring body and its two ends are respectively connected to the inner walls of the two sides of the inner ring body, dividing the area surrounded by the inner ring body to form two symmetrical fan-shaped hollow areas.

[0007] Optionally, the LNG ship pump tower emergency simulation pump device further includes a lifting hole for installing a lifting ring; the lifting hole is located on the connection part of the top panel.

[0008] Optionally, a plurality of second bolt holes are provided at equal intervals along the length of the connecting part, and each second bolt hole is provided through the connecting part along the width direction.

[0009] Optionally, a plurality of first bolt holes are provided at equal intervals along the circumference on the annular flange; Each arc segment is provided with multiple third bolt holes, and the number of third bolt holes contained in each arc segment is equal. The total number of third bolt holes contained in the outer ring assembly is equal to the number of first bolt holes. After the outer ring assembly and the inner ring assembly are assembled, the positions of each of the third bolt holes correspond to the positions of each of the first bolt holes; Each arc segment is connected to the arc-shaped area between every two mounting holes of the annular flange by bolts that pass sequentially through the third bolt hole and the first bolt hole, thereby assembling the outer ring assembly into a complete ring structure.

[0010] Optionally, the inner diameter of the annular flange matches the outer diameter of the inner ring body, and its height is less than the height of the inner ring body, with the annular flange and the inner ring body forming a step at the connection.

[0011] Optionally, the cross-section of the arc segment is L-shaped, including an end face and a wall face; after the outer ring assembly and the inner ring assembly are fitted together, the end face is in contact with the upper surface of the annular flange, and the wall face is in contact with the outer surface of the annular flange.

[0012] Optionally, a notch is provided at both ends of the inner side of each arc segment. The notch is arc-shaped, and the diameter of the circle it is in is equal to the diameter of the mounting hole.

[0013] Optionally, after the outer ring assembly and the inner ring assembly are assembled, their upper surfaces are flush with each other, and their lower surfaces are also flush with each other.

[0014] Optionally, the panels are all made of high-density polyethylene, and the tubular connectors are made of stainless steel.

[0015] The LNG ship pump tower emergency simulation pump device provided by this utility model is used for emergency pump testing. By using stainless steel and HDPE materials, it avoids corrosion caused by direct contact between carbon steel tooling and the stainless steel material of the pump tower. At the same time, it avoids the need to use stainless steel for the entire tooling, thus reducing the manufacturing cost of the tooling. Using this utility model for simulation testing, the assembly gap between the emergency pump pipe and the emergency pump on the pump tower can be precisely controlled within the design tolerance range. Moreover, this utility model is easy to construct, install, adjust or maintain, thus improving the manufacturing efficiency and quality of the pump tower. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the LNG ship pump tower emergency simulation pump device of this utility model; Figure 2 This is a top view of the panel of this utility model; Figure 3 This is a schematic diagram of the panel of this utility model; Figure 4 This is a top view of the inner ring assembly of this utility model; Figure 5 This is a schematic diagram of the inner ring assembly of this utility model; Figure 6 This is a top view of the outer ring assembly of this utility model; Figure 7 This is a schematic diagram of the arc segment of the outer ring assembly of this utility model; Figure 8 This is a top view of the arc segment of the outer ring assembly of this utility model. Detailed Implementation

[0017] The LNG ship pump tower emergency simulation pump device proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only for the purpose of conveniently and clearly illustrating the embodiments of this utility model. Please refer to the accompanying drawings to make the purpose, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] This invention provides an emergency simulation pump device for LNG ship pump towers, used for simulating experiments of emergency pumps passing through emergency pump pipes.

[0019] like Figure 1 As shown, the emergency simulation pump device includes two panels 1 and multiple tubular connectors 2. The two panels 1 are aligned vertically and connected by multiple tubular connectors 2.

[0020] In this embodiment, the panel 1 is made of HDPE (high-density polyethylene), and the tubular connector 2 is made of stainless steel. By adopting a split design and using the two materials mentioned above, corrosion caused by direct contact between carbon steel tooling and the stainless steel material of the pump tower can be avoided. At the same time, it avoids the need to make the entire tooling out of stainless steel, thus reducing the manufacturing cost of the tooling.

[0021] like Figure 2 and Figure 3 As shown, the panel 1 includes an inner ring assembly 11 and an outer ring assembly 12 that cooperates with the inner ring assembly 11.

[0022] The inner ring assembly 11 is the central component, such as Figure 4 and Figure 5 As shown, the inner ring assembly 11 is an integral structure, including an inner ring body 111, an annular flange 112 surrounding the inner ring body 111 and connected to the inner ring body 111, and a connecting portion 113.

[0023] The inner diameter of the annular flange 112 matches the outer diameter of the inner ring body 111, and its height is less than the height of the inner ring body 111, that is, the annular flange 112 and the inner ring body 111 form a step at the connection.

[0024] The connecting part 113 is arranged radially along the inner ring body 111, and its two ends are respectively connected to the inner walls of the two sides of the inner ring body 111, thereby dividing the area surrounded by the inner ring body 111 to form two symmetrical fan-shaped hollow areas 114.

[0025] Furthermore, a plurality of first bolt holes 115 are provided at equal intervals along the circumference on the annular flange 112. In this embodiment, the number of first bolt holes 115 is 16.

[0026] Furthermore, along the length direction of the connecting portion 113, a plurality of second bolt holes 116 are provided at equal intervals thereon, and each second bolt hole 116 is provided through the connecting portion 113 along the width direction.

[0027] In this embodiment, the number of second bolt holes 116 provided on the connecting part 113 is 4, and the diameter of each second bolt hole is 11 mm.

[0028] Furthermore, the LNG ship pump tower emergency simulation pump device also includes a lifting hole 117 for installing a lifting ring to simulate the lifting and movement of the emergency pump body within the emergency pump pipe. Figure 1 , Figure 4 and Figure 5 As shown, the hoisting hole 117 is provided on the connecting part 113 of the top panel 1.

[0029] In this embodiment, the preset distance is 7.07 mm.

[0030] Furthermore, at the stepped connection between the inner ring body 111 and the annular flange 112, a plurality of mounting holes 118 are provided at equal intervals along the circumference. A portion of the mounting holes 118 penetrates the outer edge of the inner ring body 111, and another portion penetrates the inner edge of the annular flange 112. The number of mounting holes 118 is the same as the number of tubular connectors 2, and the end of each tubular connector 2 is inserted into a respective mounting hole 118.

[0031] like Figures 6-8 As shown, the outer ring assembly 12 includes a plurality of identical arc segments 121. (As...) Figure 7 As shown, the arc segment 121 is stepped, meaning its cross-section is L-shaped, including an end face 1211 and a wall face 1212. The number of arc segments 121 is equal to the number of tubular connectors 2 and mounting holes 118. Each arc segment 121 matches the arc-shaped area between every two mounting holes 118 on the annular flange 112. After the outer ring assembly 12 and the inner ring assembly 11 are engaged, the end face 1211 is in contact with the upper surface of the annular flange 112, and the wall face 1212 is in contact with the outer surface of the annular flange 112.

[0032] Furthermore, each arc segment 121 is provided with a plurality of evenly arranged third bolt holes 122, and the number of third bolt holes 122 contained in each arc segment 121 is equal. The total number of third bolt holes 122 contained in the outer ring assembly 12 is equal to the number of first bolt holes 115. After the outer ring assembly 12 and the inner ring assembly 11 are engaged, the position of each of the third bolt holes 122 corresponds to the position of each of the first bolt holes 115. Each arc segment 121 is connected to the annular flange 112 by bolts that pass through the third bolt holes 122 and the first bolt holes 115 in sequence. The plurality of arc segments 121 are respectively connected to the arc-shaped area between every two mounting holes 118 on the annular flange 112, thereby assembling the outer ring assembly 12 into a complete ring structure. A schematic diagram of the outer ring assembly 12 and the inner ring assembly 11 after assembly is shown below. Figure 2 and Figure 3As shown. After the outer ring assembly 12 and the inner ring assembly 11 are assembled, their upper surfaces are flush with each other, and their lower surfaces are also flush with each other, that is, the upper surface and the lower surface of the panel 1 form a continuous seamless plane.

[0033] In this embodiment, the outer ring assembly 12 has a total of 16 third bolt holes 122. The diameter of each third bolt hole 122 is 5 mm.

[0034] Furthermore, such as Figure 8 As shown, a notch 1213 is provided at both ends of the inner side of each arc segment 121. The notch 1213 is arc-shaped, and the diameter of the circle it is in is equal to the diameter of the mounting hole 118. After the outer ring assembly 12 and the inner ring assembly 11 are assembled, both ends of the inner side of each arc segment 121 are located at each mounting hole 118. The notch 1213 is used to reserve insertion space for the tubular connector 2.

[0035] The aforementioned split design facilitates installation, adjustment, and maintenance. After repeated use, the outer edge of the panel 1, i.e., the outer ring assembly 12, is prone to wear. In this case, the outer ring assembly 12 can be replaced with a new HDPE part, while the inner ring assembly 11 and the tubular connector 2 can be reused. Furthermore, when only a portion of the outer ring assembly 12 is worn, only the arc segment where the wear is located can be replaced, while retaining the other arc segments, achieving the effect of convenient operation and material saving.

[0036] In this embodiment, there are four tubular connectors 2, and four mounting holes on each of the two panels 1. The outer ring assembly 12 also includes four arc segments 121. Each arc segment 121 has four third bolt holes 122. The four arc segments 121 are connected to the quarter-area between every two mounting holes 118 on the annular flange 112 via bolts. The two ends of each tubular connector 2 are respectively fitted into the mounting holes on the two panels 1, and both ends are fixed with bolts, thereby connecting the two panels 1.

[0037] The mounting hole is located at the connection between the inner ring body 111 and the annular flange 112. The nut and washer used with the bolts for fixing the tubular connectors 2 are located at the junction of the inner ring body 111 and the outer ring assembly 12, specifically at the junction of the inner ring body 111 and the two arc segments 121. Each tubular connector 2 is fixed between the two arc segments 121. The mutual restraint between the inner ring body 111, the arc segments 121 of the outer ring assembly 12, and the tubular connectors 2 makes the overall structure of the emergency simulation pump device more stable.

[0038] Furthermore, the outer diameter and contour of the emergency simulation pump device are consistent with the outer diameter and contour of the actual emergency pump (i.e., the outer diameter and contour of panel 1) to simulate and verify that the emergency pump can pass smoothly through the emergency pump pipe and to accurately adjust the assembly gap between the emergency pump pipe and the emergency pump.

[0039] In recent years, this utility model has been applied to emergency pumps on multiple LNG ship pump towers and has achieved significant results through testing. This utility model provides dimensional assurance for pump tower installation on LNG ships, controlling the distance between the emergency pump pipe and the emergency pump within design tolerances. Furthermore, it facilitates construction and significantly improves pump tower manufacturing efficiency and quality.

[0040] It should be noted that, in this document, 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. Unless otherwise specified, 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 said element.

[0041] In the description of this utility model, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An emergency simulation pump device for an LNG ship pump tower, characterized in that, include: Two panels (1) and multiple tubular connectors (2), the two panels (1) being centered in the vertical direction and connected by multiple tubular connectors (2); The panel (1) includes an inner ring assembly (11) and an outer ring assembly (12) that mates with the inner ring assembly (11). The inner ring assembly (11) is an integral structure, including an inner ring body (111) and an annular flange (112) surrounding the inner ring body (111) and connected to the inner ring body (111). The outer ring assembly (12) is connected to the annular flange (112); At the connection between the inner ring body (111) and the annular flange (112), a plurality of mounting holes (118) are provided at equal intervals along the circumference. A portion of the mounting holes (118) penetrates the outer edge of the inner ring body (111), and another portion penetrates the inner edge of the annular flange (112). The outer ring assembly (12) includes multiple identical arc segments (121); The number of arc segments (121), the number of mounting holes (118), and the number of tubular connectors (2) are all equal; Each of the tubular connectors (2) is fitted at both ends into the mounting holes (118) on the two panels (1) respectively, thereby connecting the two panels (1); each of the arc segments (121) is connected to the arc-shaped area between every two mounting holes (118) on the annular flange (112).

2. The LNG ship pump tower emergency simulation pump device as described in claim 1, characterized in that, The inner ring assembly (11) also includes a connecting part (113), which is arranged radially along the inner ring body (111) and its two ends are respectively connected to the inner walls of the two sides of the inner ring body (111), dividing the area surrounded by the inner ring body (111) to form two symmetrical fan-shaped hollow areas (114).

3. The LNG ship pump tower emergency simulation pump device as described in claim 2, characterized in that, The LNG ship pump tower emergency simulation pump device also includes a lifting hole (117) for installing a lifting ring; The lifting hole (117) is located on the connecting part (113) of the top panel (1).

4. The LNG ship pump tower emergency simulation pump device as described in claim 2, characterized in that, Along the length of the connecting part (113), a plurality of second bolt holes (116) are provided at equal intervals, and each second bolt hole (116) is provided through the connecting part (113) along the width direction.

5. The LNG ship pump tower emergency simulation pump device as described in claim 1, characterized in that, On the annular flange (112), a plurality of first bolt holes (115) are provided at equal intervals along the circumference. Each arc segment (121) is provided with multiple third bolt holes (122), and the number of third bolt holes (122) contained in each arc segment (121) is equal. The total number of third bolt holes (122) contained in the outer ring assembly (12) is equal to the number of first bolt holes (115). After the outer ring assembly (12) and the inner ring assembly (11) are engaged, the positions of each of the third bolt holes (122) correspond to the positions of each of the first bolt holes (115); Each arc segment (121) is connected to the arc area between every two mounting holes (118) of the annular flange (112) by bolts that pass through the third bolt hole (122) and the first bolt hole (115) in sequence, thereby assembling the outer ring assembly (12) into a complete ring structure.

6. The LNG ship pump tower emergency simulation pump device as described in claim 1, characterized in that, The inner diameter of the annular flange (112) matches the outer diameter of the inner ring body (111), and its height is less than the height of the inner ring body (111). The annular flange (112) and the inner ring body (111) form a step at the connection.

7. The LNG ship pump tower emergency simulation pump device as described in claim 6, characterized in that, The arc segment (121) has an L-shaped cross section, including an end face (1211) and a wall face (1212). After the outer ring assembly (12) and the inner ring assembly (11) are engaged, the end face (1211) is in contact with the upper surface of the annular flange (112), and the wall face (1212) is in contact with the outer surface of the annular flange (112).

8. The LNG ship pump tower emergency simulation pump device as described in claim 1, characterized in that, A notch (1213) is provided at both ends of the inner side of each arc segment (121). The notch (1213) is arc-shaped, and the diameter of the circle it is located in is equal to the diameter of the mounting hole (118).

9. The LNG ship pump tower emergency simulation pump device as described in claim 1, characterized in that, After the outer ring assembly (12) and the inner ring assembly (11) are assembled, their upper surfaces are flush with each other, and their lower surfaces are also flush with each other.

10. The LNG ship pump tower emergency simulation pump device as described in any one of claims 1-9, characterized in that, The panel (1) is made of high-density polyethylene, and the tubular connector (2) is made of stainless steel.

Images