LNG (Liquefied Natural Gas) box type skid-mounted filling device skid body capable of overhauling immersed pump

Abstract

The invention relates to the technical field of immersed pump hoisting skid bodies, aims to solve the problems that in the prior art, when an immersed pump is located in a retaining pool, hoisting is difficult, maintenance is inconvenient, the maintenance cost is high, time and labor are wasted, and potential safety hazards are large when people go up and down, and provides an LNG box type skid-mounted filling device skid body capable of overhauling the immersed pump. A suspended pump tool is arranged at the top of the box-type skid body; a slidable hoist is arranged on the suspended pump tool; a first maintenance top opening window and a second maintenance top opening window are arranged at the top of the box-type skid body corresponding to the suspended pump tool; a first maintenance side window and a second maintenance side window are formed in the two sides of the box type skid body respectively, the top end of the first maintenance side window is communicated with the outer end of the first maintenance top window, and the top end of the second maintenance side window is communicated with the outer end of the second maintenance top window. The invention has the beneficial effects of convenient hoisting, convenient maintenance, low maintenance cost, time saving, labor saving, safety for personnel to go up and down, and saving of a large amount of maintenance cost and time cost.

Description

Technical Field

[0001] The invention relates to the technical field of submersible pump hoisting skids, and in particular to a LNG box-type skid-mounted filling device skid capable of carrying out submersible pump maintenance. Background Art

[0002] The LNG box-type skid-mounted filling device is a mature and mainstream liquefied natural gas filling equipment. There are two main locations for the submersible pump. One is to be located inside the stainless steel impoundment tank. The pump pool inside the impoundment tank has the advantages of compact structure, small footprint, and convenient transportation. The other is to be located outside the stainless steel impoundment tank. The pump pool outside the impoundment tank has the advantage of large maintenance space. A hook is set on the top of the pump pool to lift the submersible pump, which is economical and not affected by time.

[0003] At present, the submersible pump is located in the pump pool and is hoisted by a temporary rental crane. Depending on the distance, the single crane appearance fee ranges from 800 yuan to 2,000 yuan. During the hoisting process, the operator needs to climb to a height of 4 meters to dismantle the top cover. The operators frequently go up and down for high-altitude operations, which poses a great safety hazard. If the submersible pump at this site fails frequently, it will be time-consuming and laborious to temporarily find a crane every time the pump is hoisted, which greatly reduces the owner's experience. However, the design scheme where the submersible pump is located in the impoundment tank currently cannot achieve simple hoisting except by crane. Summary of the invention

[0004] The present invention aims to provide a LNG box-type skid-mounted filling device skid body capable of carrying out submersible pump maintenance, so as to solve the problems in the prior art of difficult lifting, inconvenient maintenance, high maintenance cost, time-consuming and labor-intensive maintenance, and great safety hazards for personnel when the submersible pump is located in a retention tank.

[0005] The embodiment of the present invention is achieved as follows:

[0006] The embodiment of the present invention provides a skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance, which comprises a box-type skid body;

[0007] A pump hanging tooling is provided at one end of the top of the box-type skid body, and the pump hanging tooling is arranged along the lateral direction of the box-type skid body;

[0008] The pump hanging tooling is provided with a hoist, and the hoist is slidably connected to the pump hanging tooling along the transverse direction of the box-type skid body;

[0009] A first top inspection window and a second top inspection window are provided on the top of the box-type skid corresponding to the pump hanging tooling, and the first top inspection window and the second top inspection window are symmetrically distributed on the top of the box-type skid along the longitudinal direction of the box-type skid;

[0010] A first inspection side window and a second inspection side window are respectively provided on both sides of the box-type skid body, the top end of the first inspection side window and the outer end of the first inspection top window are interconnected, and the top end of the second inspection side window and the outer end of the second inspection top window are interconnected.

[0011] During maintenance, first, the staff separates the submersible pump from the pump pool, fixes one end of the sling of the hoist on the pump lifting tooling to the hoist, and the other end of the sling is fixedly connected to the submersible pump through the first maintenance top window or the second maintenance top window. The staff stands on the inner side of the box-type skid body and pulls the hoist to lift the submersible pump. When the submersible pump can completely pass through the first maintenance side window or the second maintenance side window, the staff moves to the outside of the box-type skid body and pulls the hoist to the outside of the box-type skid body, and places the submersible pump on the ground with the assistance of staff to achieve the purpose of maintenance.

[0012] The present embodiment discloses a LNG box-type skid-mounted filling device skid capable of carrying out submersible pump maintenance, which has a first top maintenance window, a second top maintenance window, a first side maintenance window, and a second side maintenance window on the top and side walls of the box-type bridge body, thereby facilitating the transportation of the submersible pump to the outside of the box-type skid body. By providing a pump lifting tool on the top of the box-type skid body, the lifting of the submersible pump is facilitated, thereby making the LNG box-type skid-mounted filling device skid capable of carrying out submersible pump maintenance have the beneficial effects of convenient lifting, convenient maintenance, low maintenance cost, time and labor saving, safety for personnel getting on and off, and saving a large amount of maintenance cost and time cost.

[0013] Optionally: the first inspection top-opening window and the second inspection top-opening window are respectively equipped with a first inspection top-opening door and a second inspection top-opening door, and the first inspection top-opening door and the second inspection top-opening door are respectively bolted to the first inspection top-opening window and the second inspection top-opening window.

[0014] Such arrangement is conducive to the opening and closing of the first inspection top-opening door and the second inspection top-opening door on the first inspection top-opening window and the second inspection top-opening window, and is convenient for the pump lifting tooling to lift the submersible pump from the first inspection top-opening window or the second inspection top-opening window. At the same time, the first inspection top-opening door and the second inspection top-opening door can also improve the structural strength of the first inspection top-opening window and the second inspection top-opening window, and avoid breakage at the first inspection top-opening window and the second inspection top-opening window during transportation.

[0015] Optionally, a sled body connection portion is provided between the first inspection top opening window and the second inspection top opening window, and the sled body connection portion is integrally formed with the top of the box-type sled body.

[0016] With such arrangement, the sled body connection portion can ensure that during the transportation of the box-type sled body, the first inspection top window and the second inspection top window have sufficient structural strength at the positions thereof, thereby avoiding the box-type sled body from being broken due to the opening of the first inspection top window and the second inspection top window.

[0017] Optionally: the first inspection side window and the second inspection side window are respectively equipped with a first inspection side door and a second inspection side door, and the first inspection side door and the second inspection side door are respectively hingedly connected to one long side of the first inspection side window and the second inspection side window.

[0018] With such arrangement, when the first inspection side door or the second inspection side door is opened, it is convenient for the pump lifting tool to lift the submersible pump, and the submersible pump can move horizontally through the first inspection side window or the second inspection side window of the first inspection side door or the second inspection side door, so that the staff can lift the submersible pump to the outside of the box-type skid body for inspection or replacement; when there is no need to lift the submersible pump, the first inspection side door and the second inspection side door are closed, which is beneficial for supporting the structure at the position of the first inspection side window and the second inspection side window, so that it is not easy to break during transportation.

[0019] Optionally: both the first inspection side door and the second inspection side door have handles.

[0020] With such arrangement, the first inspection side door and the second inspection side door can be conveniently opened or closed by the handle, which saves time and effort and improves work efficiency.

[0021] Optionally: through screw holes are provided at four corners of the first inspection side door and the second inspection side door, and fastening screws are adapted to be arranged in the through screw holes. The fastening screws pass through the through screw holes and are threadedly connected to the frame of the box-type sled body.

[0022] With such arrangement, under normal circumstances, the first inspection side door and the second inspection side door are opened and closed by hinges. During transportation, the first inspection side door and the second inspection side door are fastened to the frame of the box-type skid body by the fastening screws at the four corners, so that the walls on both sides of the box-type skid body form a unified whole, thereby ensuring the overall strength of the box-type skid body and meeting transportation requirements.

[0023] Optionally, a plurality of intersecting reinforcement members are fixedly connected to the outer wall of the box-type skid body below the first inspection side window and the second inspection side window.

[0024] With such arrangement, the plurality of reinforcing members improve the structural strength of the box-type skid body corresponding to the first inspection side window and the second inspection side window, thereby preventing breakage at these locations during transportation.

[0025] Optionally, a side ladder is provided on one side of the first inspection side window and the second inspection side window, and the side ladder is fixedly connected to the outer side wall of the box-type sled body.

[0026] In this way, the side ladder is arranged to facilitate the staff to climb to the top of the box-type skid body, to open or close the first inspection top door and the second inspection top door, and further to facilitate the pump lifting tool to lift the submersible pump.

[0027] Optionally, the pump hanging tooling comprises a first U-shaped frame and a second U-shaped frame, the first U-shaped frame and the second U-shaped frame are respectively mounted on the top of the first inspection top window and the second inspection top window, and the first U-shaped frame and the second U-shaped frame are parallel to and spaced from each other;

[0028] A guide rail is fixedly connected between the tops of the first U-shaped frame and the second U-shaped frame, a sports car is slidably clamped on the guide rail, and the hoist is hingedly connected to the bottom end of the sports car.

[0029] In this way, by setting up the guide rails on the top of the first inspection top window and the second inspection top window, the hoist can be moved on the guide rails through the sports car, which is convenient for lifting the submersible pump from the position of the first inspection top window or the second inspection top window. The lifted submersible pump slides on the guide rails through the hoist, so that the submersible pump can be moved horizontally and lifted to the outside of the box-type skid for inspection or replacement.

[0030] Optionally: a retaining tank is provided inside the box-type skid body, and an inner ladder and an outer ladder are respectively provided on the inner and outer sides of one end of the retaining tank close to the pump hanging tooling, and the top ends of the inner ladder and the outer ladder are respectively fixedly connected to the top of the outer wall of the retaining tank close to the pump hanging tooling, and a maintenance platform is provided on the top of the outer wall of the retaining tank close to the pump hanging tooling, and the top ends of the inner ladder and the outer ladder are respectively fixedly connected to the maintenance platform.

[0031] With such arrangement, when the submersible pump needs to be lifted, the inner ladder and the outer ladder facilitate the staff to enter the interior of the impoundment tank from the outside. The arrangement of the maintenance platform facilitates the staff to enter the impoundment tank and to inspect the valves close to the maintenance platform.

[0032] Optionally: a pump pool installation position is installed on the inner bottom surface of the above-mentioned impoundment tank, a pump pool is installed on the above-mentioned pump pool installation position, a submersible pump is installed in the above-mentioned pump pool, a pump cover is fixedly connected to the top of the above-mentioned submersible pump, the above-mentioned pump cover is detachably sealed and connected to the top of the above-mentioned pump pool, and the above-mentioned first maintenance top opening window and the above-mentioned second maintenance top opening window are located at the top of the above-mentioned submersible pump.

[0033] Such arrangement enables the first inspection top opening window and the second inspection top opening window to be located above the impoundment tank, making it easy to lift and install the submersible pump in the pump tank, thus saving time and effort.

[0034] Optionally: a tank hoisting top door and a vacuum tube top door are respectively provided on both sides of the above-mentioned pump hanging tooling, and the above-mentioned tank hoisting top door and the vacuum tube top door are both located on the top of the above-mentioned box-type skid body.

[0035] With such arrangement, the switch of the storage tank hoisting top door can facilitate the disassembly and assembly of the liquefied natural gas tank body, and the switch of the vacuum tube top door can facilitate the disassembly and assembly of the vacuum tube.

[0036] Optionally, both the inner ladder and the outer ladder are provided with handrails.

[0037] In this way, the handrails are arranged to facilitate the workers to enter and exit the impoundment tank, thereby improving the safety of the workers entering and exiting the impoundment tank and reducing the risk of falling.

[0038] Based on the above description, the LNG box-type skid-mounted filling device skid body disclosed in the present invention, which can perform submersible pump maintenance, has the beneficial effects of convenient lifting, convenient maintenance, low maintenance cost, time and labor saving, safety for personnel getting on and off, and can save a lot of maintenance cost and time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A three-dimensional stereoscopic diagram of a skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance in an embodiment of the present invention;

[0041] Figure 2 For the embodiment of the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0042] Figure 3 It is a structural schematic diagram of a pump hanging tooling in an embodiment of the present invention;

[0043] Figure 4 It is a top view of a skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance in an embodiment of the present invention;

[0044] Figure 5 For the embodiment of the present invention Figure 4 The enlarged schematic diagram of point B in the middle;

[0045] Figure 6 It is a side view of a skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance in an embodiment of the present invention;

[0046] Figure 7 For the embodiment of the present invention Figure 6 The enlarged schematic diagram at C in the middle;

[0047] Figure 8 It is a partial perspective side view of a skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance in an embodiment of the present invention;

[0048] Fig. 9 For the embodiment of the present invention Figure 8 Enlarged schematic diagram at point D in the middle.

[0049] Icons: 1-box-type skid, 2-pump hanging tooling, 3-hoist, 4-first maintenance top window, 5-second maintenance top window, 6-first maintenance side window, 7-second maintenance side window, 8-first maintenance top door, 9-second maintenance top door, 10-skid body connection, 11-first maintenance side door, 12-second maintenance side door, 13-handle, 14-through screw hole, 15-fastening Screws, 16-reinforcement, 17-side ladder, 18-first U-shaped frame, 19-second U-shaped frame, 20-guide rails, 21-sports car, 22-retention tank, 23-inner ladder, 24-outer ladder, 25-maintenance platform, 26-pump pool installation position, 27-pump pool, 28-submersible pump, 29-pump cover, 30-tank hoisting top door, 31-vacuum tube top door, 32-handrails. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Example

[0053] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , this embodiment provides a LNG box-type skid-mounted filling device skid body capable of carrying out submersible pump maintenance, comprising a box-type skid body 1;

[0054] A pump hanging tool 2 is provided at one end of the top of the box-type skid body 1, and the pump hanging tool 2 is arranged along the lateral direction of the box-type skid body 1;

[0055] The pump hanging tooling 2 is provided with a hoist 3, and the hoist 3 is slidably connected to the pump hanging tooling 2 along the transverse direction of the box-type skid body 1;

[0056] A first maintenance top window 4 and a second maintenance top window 5 are provided on the top of the box-type skid body 1 corresponding to the pump hanging tooling 2. The first maintenance top window 4 and the second maintenance top window 5 are symmetrically distributed on the top of the box-type skid body 1 along the longitudinal direction of the box-type skid body 1.

[0057] A first inspection side window 6 and a second inspection side window 7 are respectively provided on both sides of the box-type skid body 1. The top end of the first inspection side window 6 and the outer end of the first inspection top window 4 are interconnected, and the top end of the second inspection side window 7 and the outer end of the second inspection top window 5 are interconnected.

[0058] During maintenance, first, the staff separates the submersible pump 28 from the pump pool 27, fixes one end of the sling of the hoist 3 on the pump hanging tooling 2 to the hoist 3, and fixes the other end of the sling to the submersible pump 28 through the first maintenance top window 4 or the second maintenance top window 5. The staff stands on the inner side of the box-type skid body 1 and pulls the hoist 3 to lift the submersible pump 28. When the submersible pump 28 can completely pass through the first maintenance side window 6 or the second maintenance side window 7, the staff moves to the outside of the box-type skid body 1 and pulls the hoist 3 to the outside of the box-type skid body 1. With the assistance of personnel, the submersible pump 28 is placed on the ground to achieve the purpose of maintenance.

[0059] The present embodiment discloses a LNG box-type skid-mounted filling device skid capable of carrying out submersible pump maintenance. Since a first top maintenance window 4, a second top maintenance window 5, a first side maintenance window 6 and a second side maintenance window 7 are provided on the top and side walls of the box-type bridge body, it is convenient to transport the submersible pump 28 to the outside of the box-type skid 1. By providing a pump lifting tool 2 on the top of the box-type skid 1, it is convenient to lift the submersible pump 28. As a result, the LNG box-type skid-mounted filling device skid capable of carrying out submersible pump maintenance has the beneficial effects of convenient lifting, convenient maintenance, low maintenance cost, time and labor saving, safety for personnel, and saving a lot of maintenance cost and time cost.

[0060] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The first inspection top opening window 4 and the second inspection top opening window 5 are respectively equipped with the first inspection top opening door 8 and the second inspection top opening door 9, which are respectively bolted to the first inspection top opening window 4 and the second inspection top opening window 5, so as to facilitate the opening and closing of the first inspection top opening door 8 and the second inspection top opening door 9 on the first inspection top opening window 4 and the second inspection top opening window 5, and facilitate the pump lifting tooling 2 to lift the submersible pump 28 from the first inspection top opening window 4 or the second inspection top opening window 5. At the same time, the first inspection top opening door 8 and the second inspection top opening door 9 can also improve the structural strength of the first inspection top opening window 4 and the second inspection top opening window 5, and avoid breakage at the positions of the first inspection top opening window 4 and the second inspection top opening window 5 during transportation.

[0061] There is a sled body connecting portion 10 between the first inspection top window 4 and the second inspection top window 5. The sled body connecting portion 10 is integrally formed with the top of the box-type sled body 1. The sled body connecting portion 10 can ensure that during the transportation of the box-type sled body 1, the first inspection top window 4 and the second inspection top window 5 have sufficient structural strength at the positions, thereby avoiding the box-type sled body 1 from breaking due to the opening of the first inspection top window 4 and the second inspection top window 5.

[0062] The first inspection side window 6 and the second inspection side window 7 are respectively equipped with a first inspection side door 11 and a second inspection side door 12, which are respectively hingedly connected to one long side of the first inspection side window 6 and the second inspection side window 7. When the first inspection side door 11 or the second inspection side door 12 is opened, it is convenient for the pump lifting tool 2 to lift the submersible pump 28, and the submersible pump 28 moves horizontally through the first inspection side window 6 or the second inspection side window 7 of the first inspection side door 11 or the second inspection side door 12, so as to facilitate the staff to lift the submersible pump 28 to the outside of the box-type skid body 1 for maintenance or replacement; when the submersible pump 28 does not need to be lifted, the first inspection side door 11 and the second inspection side door 12 are closed, which is beneficial to support the structure at the position of the first inspection side window 6 and the second inspection side window 7, so that it is not easy to break during transportation.

[0063] In this embodiment, the first inspection side door 11 and the second inspection side door 12 can be used as emergency passages. When a person is inside the cofferdam, if an emergency occurs, the person can climb to the first inspection side door 11 or the second inspection side door 12 through the internal ladder 23. The first inspection side door 11 or the second inspection side door 12 can be opened from the inside, thereby facilitating the escape of personnel from the inside of the box-type skid body 1, thereby ensuring the safety of the personnel's work.

[0064] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 Both the first inspection side door 11 and the second inspection side door 12 have a handle 13, and the first inspection side door 11 and the second inspection side door 12 can be conveniently opened or closed by the handle 13, which saves time and effort and improves work efficiency.

[0065] The four corners of the first inspection side door 11 and the second inspection side door 12 are provided with through screw holes 14, and fastening screws 15 are adapted in the through screw holes 14. The fastening screws 15 penetrate the through screw holes 14 and are threadedly connected to the frame of the box-type sled body 1 (not shown in the figure). Under normal circumstances, the first inspection side door 11 and the second inspection side door 12 are opened and closed by hinges. During transportation, the first inspection side door 11 and the second inspection side door 12 are fastened to the frame of the box-type sled body 1 by the fastening screws 15 at the four corners, so that the walls on both sides of the box-type sled body 1 form a unified whole, thereby ensuring the overall strength of the box-type sled body 1 and meeting transportation requirements.

[0066] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The outer wall of the box-type skid body 1 below the first inspection side window 6 and the second inspection side window 7 is fixedly connected with a plurality of intersecting reinforcement members 16. The plurality of reinforcement members 16 improve the structural strength of the box-type skid body 1 corresponding to the first inspection side window 6 and the second inspection side window 7 to avoid breakage at this location during transportation.

[0067] A side ladder 17 is provided on one side of the first maintenance side window 6 and the second maintenance side window 7. The side ladder 17 is fixedly connected to the outer wall of the box-type skid body 1. The setting of the side ladder 17 is convenient for the staff to climb to the top of the box-type skid body 1, and to open or close the first maintenance top door 8 and the second maintenance top door 9, thereby facilitating the pump lifting tooling 2 to lift the submersible pump 28.

[0068] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The pump hanging tooling 2 has a first U-shaped frame 18 and a second U-shaped frame 19, which are respectively mounted on the top of the first inspection top window 4 and the second inspection top window 5, and the first U-shaped frame 18 and the second U-shaped frame 19 are parallel to each other and spaced apart;

[0069] A guide rail 20 is fixedly connected between the top of the first U-shaped frame 18 and the second U-shaped frame 19, and a sports car 21 is slidably clamped on the guide rail 20. The hoist 3 is hingedly connected to the bottom end of the sports car 21. By setting up the guide rail 20 on the top of the first inspection top window 4 and the second inspection top window 5, the hoist 3 can move on the guide rail 20 through the sports car 21, so that the submersible pump 28 can be lifted from the position of the first inspection top window 4 or the second inspection top window 5. The lifted submersible pump 28 slides on the guide rail 20 through the hoist 3, so that the submersible pump 28 can move horizontally and be lifted to the outside of the box-type skid body 1 for inspection or replacement.

[0070] A retaining tank 22 is provided inside the box-type skid body 1, and an inner ladder 23 and an outer ladder 24 are respectively provided on the inner and outer sides of one end of the retaining tank 22 close to the pump hanging tooling 2, and the top ends of the inner ladder 23 and the outer ladder 24 are respectively fixedly connected to the top of the outer wall of the retaining tank 22 close to the pump hanging tooling 2, and a maintenance platform 25 is provided on the top of the outer wall of the retaining tank 22 close to the pump hanging tooling 2, and the top ends of the inner ladder 23 and the outer ladder 24 are respectively fixedly connected to the maintenance platform 25. When the submersible pump 28 needs to be lifted, the inner ladder 23 and the outer ladder 24 facilitate the staff to enter the interior of the retaining tank 22 from the outside. The provision of the maintenance platform 25 is convenient for the staff to enter the retaining tank 22 and to inspect the valves close to the maintenance platform 25.

[0071] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 A pump pool 27 mounting position 26 is installed on the inner bottom surface of the impoundment tank 22, a pump pool 27 is installed on the pump pool 27 mounting position 26, a submersible pump 28 is installed in the pump pool 27, a pump cover 29 is fixedly connected to the top of the submersible pump 28, the pump cover 29 is detachably sealed and connected to the top of the pump pool 27, the first maintenance top window 4 and the second maintenance top window 5 are located on the top of the submersible pump 28, so that the first maintenance top window 4 and the second maintenance top window 5 are located above the impoundment tank 22, which is convenient for lifting and installation of the submersible pump 28 in the pump pool 27, saving time and effort.

[0072] A tank hoisting top door 30 and a vacuum tube top door 31 are respectively provided on both sides of the pump hanging tooling 2. The tank hoisting top door 30 and the vacuum tube top door 31 are both located on the top of the box-type skid body 1. The opening and closing of the tank hoisting top door 30 can facilitate the disassembly and assembly of the liquefied natural gas tank body, and the opening and closing of the vacuum tube top door 31 can facilitate the disassembly and assembly of the positive air pipe.

[0073] Both the inner ladder 23 and the outer ladder 24 are provided with handrails 32. The provision of the handrails 32 facilitates the workers to enter and exit the impoundment tank 22, improves the safety of the workers to enter and exit the impoundment tank 22, and reduces the risk of falling.

[0074] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9In this embodiment, the submersible pump 28 is installed in the pump pool 27, the pump pool 27 is installed in the pump pool 27 installation position 26, and is located in the impoundment tank 22. Entering and exiting the impoundment tank 22 can only be achieved through the external ladder 24 and the internal ladder 23.

[0075] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In this embodiment, the total length of the box-type skid 1 is greater than 17.5m, and the available length of a conventional transport flatbed truck is 13.75m. Due to the counterweight relationship, the box-type skid 1 with the pump hanging tooling 2 at one end can only be suspended on the outside of the flatbed truck, which makes it possible for the suspended section of the box-type skid 1 and the section of the box-type skid 1 on the flatbed truck to break during transportation. On the one hand, by setting the skid connection part 10 at the top, the skid connection part 10 is enlarged as much as possible and strengthened. On the other hand, the size of the first maintenance top window 4 and the second maintenance top window 5 at the top is reduced as much as possible as needed. The conventional design of the box-type skid will be equipped with two submersible pumps 28. Under the condition that the top of the box-type skid 1 is not disconnected as a whole and the respective maintenance purposes can be achieved, the two submersible pumps 28 can be lifted and maintained by sliding the sports car 21 on the pump hanging tooling 2 to the left and right according to actual needs.

[0076] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , the main process of submersible pump maintenance is as follows:

[0077] Step 1: The staff enters the impoundment tank 22 through the outer ladder 24, the maintenance platform 25 and the inner ladder 23, and separates the pump pool 27 and the pump cover 29 inside the impoundment tank 22;

[0078] Step 2: The staff opens the first inspection side door 11 and the second inspection side door 12, and climbs to the top of the box-type skid body 1 through the side ladder 17, and opens the first inspection top door 8 and the second inspection top door 9;

[0079] Step 3: fix one end of the sling of the hoist 3 on the pump hanging tool 2 to the hoist 3, and fix the other end of the sling to the submersible pump 28 through the first maintenance top window 4 or the second maintenance top window 5;

[0080] Step 4: The personnel are located inside the box-type skid body 1, and lift the pump cover 29 and the submersible pump 28 by pulling the hoist 3. When the submersible pump 28 can completely pass through the first maintenance side window 6 or the second maintenance side window 7, the personnel move to the outside of the box-type skid body 1 and pull the hoist 3 to move to the outside of the box-type skid body 1. With the assistance of the personnel, the submersible pump 28 is placed on the ground for easy maintenance or replacement;

[0081] Step 5: lift the submersible pump 28 that has been repaired or replaced by the hoist 3, put it into the pump pool 27 through the first maintenance side window 6 or the second maintenance side window 7, and seal the pump cover 29 on the pump pool 27 to complete the maintenance purpose.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A skid body of an LNG box-type skid-mounted filling device capable of carrying out submersible pump maintenance, characterized in that: It comprises a box-type skid body (1); A pump hanging tool (2) is provided at one end of the top of the box-type skid body (1), and the pump hanging tool (2) is arranged along the lateral direction of the box-type skid body (1); The pump hanging tool (2) is provided with a hoist (3), and the hoist (3) is slidably connected to the pump hanging tool (2) along the transverse direction of the box-type skid body (1); A first inspection top window (4) and a second inspection top window (5) are provided on the top of the box-type skid (1) corresponding to the pump hanging tooling (2); the first inspection top window (4) and the second inspection top window (5) are symmetrically distributed on the top of the box-type skid (1) along the longitudinal direction of the box-type skid (1); A first inspection side window (6) and a second inspection side window (7) are respectively provided on both sides of the box-type skid body (1); the top end of the first inspection side window (6) and the outer end of the first inspection top window (4) are interconnected, and the top end of the second inspection side window (7) and the outer end of the second inspection top window (5) are interconnected.

2. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: The first inspection top-opening window (4) and the second inspection top-opening window (5) are respectively equipped with a first inspection top-opening door (8) and a second inspection top-opening door (9); the first inspection top-opening door (8) and the second inspection top-opening door (9) are respectively bolted to the first inspection top-opening window (4) and the second inspection top-opening window (5).

3. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: A sled body connection portion (10) is provided between the first inspection top opening window (4) and the second inspection top opening window (5), and the sled body connection portion (10) is integrally formed with the top of the box-type sled body (1).

4. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: The first inspection side window (6) and the second inspection side window (7) are respectively equipped with a first inspection side door (11) and a second inspection side door (12); the first inspection side door (11) and the second inspection side door (12) are respectively hingedly connected to one long side of the first inspection side window (6) and the second inspection side window (7).

5. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 4 is characterized in that: The first inspection side door (11) and the second inspection side door (12) are both provided with a handle (13).

6. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 4 is characterized in that: The four corners of the first inspection side door (11) and the second inspection side door (12) are each provided with a through screw hole (14), and a fastening screw (15) is adapted to be inserted into the through screw hole (14). The fastening screw (15) passes through the through screw hole (14) and is threadedly connected to the frame of the box-type skid body (1).

7. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: The outer wall of the box-type skid body (1) below the first inspection side window (6) and the second inspection side window (7) is fixedly connected with a plurality of intersecting reinforcement members (16).

8. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: A side ladder (17) is provided on one side of each of the first inspection side window (6) and the second inspection side window (7), and the side ladder (17) is fixedly connected to the outer side wall of the box-type skid body (1).

9. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1 is characterized in that: The pump hanging tool (2) comprises a first U-shaped frame (18) and a second U-shaped frame (19), wherein the first U-shaped frame (18) and the second U-shaped frame (19) are respectively mounted on the top ends of the first inspection top window (4) and the second inspection top window (5), and the first U-shaped frame (18) and the second U-shaped frame (19) are parallel to and spaced from each other; A guide rail (20) is fixedly connected between the tops of the first U-shaped frame (18) and the second U-shaped frame (19), a sports car (21) is slidably clamped on the guide rail (20), and the hoist (3) is hingedly connected to the bottom end of the sports car (21).

10. The LNG box-type skid-mounted filling device skid capable of submersible pump maintenance according to claim 1, characterized in that: The box-type skid body (1) is provided with a retaining tank (22) inside, and an inner ladder (23) and an outer ladder (24) are respectively provided on the inner and outer sides of one end of the retaining tank (22) close to the pump hanging fixture (2), and the top ends of the inner ladder (23) and the outer ladder (24) are respectively fixedly connected to the top of the outer wall of the retaining tank (22) close to the pump hanging fixture (2), and an inspection platform (25) is provided on the top of the outer wall of the retaining tank (22) close to the pump hanging fixture (2), and the top ends of the inner ladder (23) and the outer ladder (24) are respectively fixedly connected to the inspection platform (25).

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