LNG immersed pump storage and transfer device

Abstract

The utility model discloses an LNG immersed pump storage and transfer device. The LNG immersed pump storage and transfer device comprises a frame structure and sleeper assemblies. The sleeper assembly is detachably arranged in the frame structure; the sleeper assembly comprises a first sleeper and a second sleeper; u-shaped grooves are formed in the middle of the first sleeper and the middle of the second sleeper correspondingly, the LNG immersed pump is vertically embedded into the frame structure, and the LNG immersed pump is fixed through the sleeper assembly by adjusting the distance between the first sleeper and the second sleeper. The LNG immersed pump vertical storage and transfer device is simple in structure and convenient to manufacture and assemble. By using the device, the LNG liquid cargo pump can be quickly and accurately loaded and unloaded, the use of other tools such as binding bands and chain hoists is reduced, the manual intervention and operation time are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG ship submersible pump transfer devices, in particular to a LNG submersible pump storage and transfer device. Background Art

[0002] As the international community's demand for clean energy continues to rise, the LNG industry is developing vigorously, and LNG ships are becoming more and more popular in the shipping market. As a result, the frequency of LNG ships being repaired in shipyards is increasing. The LNG liquid cargo pump is a key core equipment in the liquid cargo tank of LNG transport ships. It is expensive and requires high assembly precision. At the same time, it requires regular inspection and maintenance, and is a must-check item in LNG ship repair projects.

[0003] During the dock repair at the shipyard, when the LNG submersible pump is overhauled, the liquid cargo pump must first be lifted from the LNG cargo tank to the ground in a vertical state, and then transferred to a clean, dust-free, constant temperature and humidity workshop for maintenance. For general ship machinery vertical equipment during transportation or storage, for safety reasons, it is often flipped to a horizontal position and fixed to a flatbed truck with a chain hoist or nylon straps. However, the LNG liquid cargo pump is generally composed of a guide wheel, an impeller, a rotor shaft and rotor, a stator, bearings, end covers, a pump casing, a junction box, etc. Due to its unique structural characteristics, in order to avoid tilting or violent shaking of the pump body during the horizontal placement or flipping of the equipment, which may easily cause damage to the pump body, pump shaft, bearings or internal cables, therefore, during the transportation, storage, and dismantling process, it is necessary to comprehensively consider its placement method, position, and transportation stability. Utility Model Content

[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a storage and transfer device for LNG submersible pumps to achieve the purpose of vertical and stable transfer of LNG submersible pumps.

[0005] Specifically, the utility model provides an LNG submersible pump storage and transfer device, including a frame structure and a sleeper assembly; the sleeper assembly is detachably arranged in the frame structure; the sleeper assembly includes a first sleeper and a second sleeper; the middle parts of the first sleeper and the second sleeper are respectively provided with a U-shaped groove, and the LNG submersible pump is vertically embedded in the frame structure, and the sleeper assembly is used to fix the LNG submersible pump by adjusting the distance between the first sleeper and the second sleeper.

[0006] Furthermore, the sleeper assembly also includes an adjusting screw rod, and horizontal holes are respectively provided at both ends of the first sleeper and the second sleeper. The adjusting screw rod horizontally passes through the horizontal holes to achieve the connection between the first sleeper and the second sleeper and the adjustment of the horizontal distance.

[0007] Furthermore, both ends of the first sleeper and the second sleeper are provided with vertical holes, and the vertical holes are used to achieve the connection between the first sleeper and the second sleeper and the frame structure.

[0008] Furthermore, the sleeper assembly also includes a base plate and angle steel; a circular hole matching the U-shaped groove is provided in the middle of the base plate, and the first sleeper and the second sleeper are arranged on the base plate; a group of the angle steels are respectively attached to the sides of the first sleeper and the second sleeper.

[0009] Furthermore, the frame structure includes a base, columns, a middle fixed platform, and a top fixed platform; the columns are welded to the base; the middle fixed platform and the top fixed platform are welded to the middle and top of the columns, respectively.

[0010] The utility model uses a steel plate as a base, and four angle steel columns are welded on the base to support a middle fixed platform and a top fixed platform.

[0011] Furthermore, the LNG submersible pump storage and transfer device described in the utility model also includes a plurality of fixed screw rods and nuts, and a plurality of strip holes are respectively provided on the middle fixed platform and the top fixed platform, and the first sleeper and the second sleeper are installed in the strip holes through the fixed screw rods and nuts.

[0012] Preferably, the top outer side surfaces of the columns are symmetrically and diagonally welded with lifting ears. The utility model has four columns with symmetrical and diagonally welded lifting ears on the top outer side surfaces of the four columns, which are used in conjunction with the overall lifting.

[0013] More preferably, channel steel is welded to the outer sides of the columns and the middle fixed platform.

[0014] More preferably, triangular reinforcement plates are welded to the outer sides of the upright columns and the middle fixed platform.

[0015] Channel steel and triangular reinforcement plates are welded on the outside of the columns and the middle fixed platform to serve as card slots for the overall forklift transportation.

[0016] The working principle of the utility model is as follows:

[0017] The frame structure is a load-bearing steel structure, and its base can ensure the stability of the entire device when placed on a flatbed truck or workshop floor. The top fixed platform will be equipped with a pair of first and second sleepers with a U-shaped groove in the middle, as well as reinforced angle steel, which are respectively fitted under the flange connecting the outlet end cover of the LNG submersible pump and the motor housing, and the housing is clamped to lock the screw rods and nuts in the vertical and horizontal directions passing through the first and second sleepers.

[0018] Similarly, a pair of first and second sleepers with a U-shaped groove in the middle and reinforcing angle steel are set on the central fixed platform, which are respectively fitted under the connecting flanges of the pump blade housing and the motor housing of the LNG submersible pump, clamping the housing and locking the screw rods and nuts passing through the first and second sleepers in the vertical and horizontal directions.

[0019] The LNG submersible pump is firmly fixed in the center of the frame structure through two pairs of locked sleepers and reinforced angle steel. And through the above storage and transfer device, the LNG submersible pump can be transported, stored, and repaired vertically as a whole by forklift or hoisting.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model has a simple structure for the vertical storage and transfer device for LNG submersible pumps and is easy to manufacture and assemble. By using the device, the LNG liquid cargo pump can be loaded and unloaded quickly and accurately, reducing the use of other tools such as straps and chain hoists, reducing manual intervention and operation time, and improving work efficiency.

[0022] The utility model of the LNG submersible pump vertical storage and transfer device can ensure the stability, reliability and safety during the transfer process, reduce the risk of damage accidents of the LNG liquid cargo pump during transportation, and is suitable for LNG submersible pumps of different sizes by adjusting the size of the sleepers, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall disassembled structure of the vertical storage and transfer device for LNG submersible pumps of the utility model.

[0024] Figure 2 It is a schematic diagram of the explosion structure of sleepers of the vertical storage and transfer device for LNG submersible pumps of the utility model.

[0025] Figure 3 It is a three-dimensional schematic diagram of the framework structure of the vertical storage and transfer device for LNG submersible pumps of the utility model. DETAILED DESCRIPTION

[0026] The drawings in the embodiments provide a more detailed description of the technical solutions in the embodiments of the utility model. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the utility model, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. The embodiments of the utility model are described in detail below in conjunction with the drawings.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0029] Example

[0030] The utility model provides a LNG submersible pump storage and transfer device, such as Figure 1 As shown, it includes a frame structure 1 and a sleeper assembly 2; the sleeper assembly 2 is detachably arranged in the frame structure 1; the sleeper assembly 2 includes a first sleeper 21 and a second sleeper 22; the middle parts of the first sleeper 21 and the second sleeper 22 are respectively provided with a U-shaped groove 10, and the LNG submersible pump is vertically embedded in the frame structure 1, and the sleeper assembly 2 is used to fix the LNG submersible pump by adjusting the distance between the first sleeper 21 and the second sleeper 22.

[0031] Combination Figure 2As shown, the sleeper assembly 2 also includes an adjusting screw rod 23. The first sleeper 21 and the second sleeper 22 are respectively provided with horizontal holes 20 at both ends. The adjusting screw rod 23 horizontally passes through the horizontal holes 20 to achieve the connection between the first sleeper 21 and the second sleeper 22 and the adjustment of the horizontal distance.

[0032] like Figure 2 As shown, vertical holes 30 are further provided at both ends of the first sleeper 21 and the second sleeper 22 , and the vertical holes 30 are used to achieve the connection between the first sleeper 21 and the second sleeper 22 and the frame structure 1 .

[0033] like Figure 2 As shown, the sleeper assembly 2 also includes a bottom plate 24 and an angle steel 25; a circular hole 40 matching the U-shaped groove 10 is provided in the middle of the bottom plate 24, and the first sleeper 21 and the second sleeper 22 are arranged on the bottom plate 24; a group of the angle steels 25 are respectively attached to the sides of the first sleeper 21 and the second sleeper 22.

[0034] Combination Figure 1 and Figure 3 As shown, the frame structure 1 includes a base 11, columns 12, a middle fixed platform 13, and a top fixed platform 14; the columns 12 are welded on the base 11; the middle fixed platform 13 and the top fixed platform 14 are welded to the middle and top of the columns 12 respectively.

[0035] like Figure 2 As shown, the LNG submersible pump storage and transfer device of the utility model also includes a plurality of fixed screw rods 3 and nuts 4, combined with Figure 3 As shown, a plurality of strip holes 50 are respectively provided on the middle fixed platform 13 and the top fixed platform 14 , and the first sleeper 21 and the second sleeper 22 are installed in the strip holes 50 through the fixing screw rod 3 and the nut 4 .

[0036] Preferably, the top outer side surfaces of the columns 12 are symmetrically diagonally welded with hanging ears 15 .

[0037] More preferably, channel steel 16 is welded to the outer sides of the upright column 12 and the middle fixed platform 13 .

[0038] More preferably, triangular reinforcement plates 17 are welded to the outer sides of the upright column 12 and the middle fixed platform 13 .

[0039] During the LNG dock repair construction process, the use of the LNG submersible pump vertical storage and transfer device requires the cooperation of a flatbed truck, forklift and crane. The device is placed on a flatbed truck using a crane or forklift, and the flatbed truck is transported to the dock to wait for the LNG submersible pump to be lifted out of the liquid cargo tank. The crane lifts the LNG submersible pump to the top of the device and then slowly drops it. During the falling process, the LNG submersible pump is straightened and dropped into the center hole of the device frame structure 1.

[0040] When the suction port and pump housing of the lower end of the LNG submersible pump fall below the top fixed platform 14, slide the first sleeper 21 and the second sleeper 22 on the top fixed platform 14 until the pump body fits, and temporarily lock them with the screw rod and nut 4. Continue to slowly lower the LNG submersible pump until the connection flange between the outlet end cover and the motor housing fits with the sleepers. At this time, a pair of sleepers are used to hold the pump housing on the middle fixed platform, and the upper surface of the sleepers is in contact with the flange of the pump housing.

[0041] Tighten the screw rods and nuts 4 in the vertical and horizontal directions of the upper and lower pairs of sleeper assemblies 2, and the LNG submersible pump is completely fixed on the device. After the crane is unhooked, the LNG submersible pump can be transported as a whole to a dust-free workshop with constant temperature and humidity using a flatbed truck.

[0042] In a dust-free workshop with constant temperature and humidity, use a forklift to unload the LNG submersible pump storage and shipping device, and then disassemble and repair the LNG submersible pump.

[0043] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model. Those skilled in the art can also make other changes within the spirit of the utility model and apply them to the design of the utility model, as long as they do not deviate from the technical effects of the utility model. These changes made according to the spirit of the utility model should be included in the scope of protection claimed by the utility model.

Claims

1. An LNG submersible pump storage and transfer device, characterized in that: It comprises a frame structure (1) and a sleeper assembly (2); The sleeper assembly (2) is detachably arranged in the frame structure (1); The sleeper assembly (2) comprises a first sleeper (21) and a second sleeper (22); a U-shaped groove (10) is respectively provided in the middle of the first sleeper (21) and the second sleeper (22), and an LNG submersible pump is vertically embedded in the frame structure (1); and the sleeper assembly (2) fixes the LNG submersible pump by adjusting the distance between the first sleeper (21) and the second sleeper (22).

2. The LNG submersible pump storage and transfer device according to claim 1, characterized in that: The sleeper assembly (2) further comprises an adjusting screw rod (23); both ends of the first sleeper (21) and the second sleeper (22) are respectively provided with horizontal holes (20); the adjusting screw rod (23) passes horizontally through the horizontal holes (20) to achieve connection between the first sleeper (21) and the second sleeper (22) and adjustment of the horizontal distance.

3. The LNG submersible pump storage and transfer device according to claim 2 is characterized in that: Vertical holes (30) are also provided at both ends of the first sleeper (21) and the second sleeper (22), and the vertical holes (30) are used to achieve the connection between the first sleeper (21) and the second sleeper (22) and the frame structure (1).

4. The LNG submersible pump storage and transfer device according to claim 2, characterized in that: The sleeper assembly (2) further comprises a bottom plate (24) and angle steels (25); a circular hole (40) matching the U-shaped groove (10) is provided in the middle of the bottom plate (24); the first sleeper (21) and the second sleeper (22) are arranged on the bottom plate (24); and a group of the angle steels (25) are respectively attached to the sides of the first sleeper (21) and the second sleeper (22).

5. The LNG submersible pump storage and transfer device according to claim 2, characterized in that: The frame structure (1) comprises a base (11), a column (12), a middle fixed platform (13), and a top fixed platform (14); the column (12) is welded to the base (11); the middle fixed platform (13) and the top fixed platform (14) are respectively welded to the middle and top of the column (12).

6. The LNG submersible pump storage and transfer device according to claim 5, characterized in that: It also includes a plurality of fixing screw rods (3) and nuts (4), and a plurality of strip holes (50) are respectively provided on the middle fixing platform (13) and the top fixing platform (14), and the first sleeper (21) and the second sleeper (22) are installed in the strip holes (50) through the fixing screw rods (3) and the nuts (4).

7. The LNG submersible pump storage and transfer device according to claim 5, characterized in that: The top outer side surfaces of the upright columns (12) are symmetrically diagonally welded with hanging ears (15).

8. The LNG submersible pump storage and transfer device according to claim 5, characterized in that: Channel steel (16) is also welded to the outer sides of the upright column (12) and the middle fixed platform (13).

9. The LNG submersible pump storage and transfer device according to claim 5, characterized in that: Triangular reinforcement plates (17) are also welded to the outer sides of the upright column (12) and the middle fixed platform (13).

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