CN117190062A - Pump tower base of low-temperature liquid cargo storage tank - Google Patents

Abstract

An embodiment of the present application provides a pump tower base for a cryogenic liquid cargo tank for defining a position of a pump tower, comprising: the lower part of the cylinder is fixedly connected with the bottom wall of the low-temperature liquid cargo storage tank, the middle part of the cylinder is provided with supporting piles symmetrically arranged relative to the cylinder, and the outer side of the upper part is provided with a connecting coaming; the top blocks are arranged in a plurality and are symmetrically arranged about the center line center of the vertical direction of the cylinder body; when the position is limited, the connecting coaming upwards passes through a limiting hole which is formed in the center of the bottom plate of the pump tower and is matched with the shape of the frame body structure formed by sequentially connecting the connecting coaming, one side of the top block is fixedly connected with the bottom plate of the pump tower through a fixed connecting piece, the other side of the top block is fixedly connected with the connecting coaming which upwards passes through the bottom plate of the pump tower, and the connecting coaming is sequentially connected with the inner side edge of the limiting hole, so that the distance between the formed frame body structure and the inner side edge of the limiting hole is not more than 150mm.

Description

Pump tower base of low-temperature liquid cargo storage tank

Technical Field

The application relates to the technical field of equipment for transporting and storing low-temperature liquid cargoes, in particular to a pump tower base for a low-temperature liquid cargo storage tank.

Background

In transporting a gas such as natural gas or ethane gas, it is common to cool the gas to a low temperature and transport the liquefied gas for more economical long-distance transportation. The volume of the liquefied gas is greatly reduced, and the transportation cost is reduced. The liquefied low-temperature liquid is stored and transported by adopting a special low-temperature storage tank, and a pump tower is arranged in the storage tank to serve as a channel for the low-temperature liquid to enter and exit the storage tank.

Typically, the upper end of the pump tower is secured to the top of the tank and the lower end is secured to the pump tower base. Because the pump tower is immersed in low-temperature liquid for a long time, thermal expansion and cold contraction can be generated due to the change of the temperature of the storage tank in a loading and unloading state and an overhauling state; and the dimension of the pump tower in the height direction is obviously larger than the dimension of the pump tower in the transverse direction and the longitudinal direction, so that the expansion with heat and the contraction with cold of the pump tower in the height direction are more obvious. In order to avoid overlarge temperature stress, a fixed connection mode cannot be adopted between the pump towers, the pump tower base is required to release the displacement of the pump tower in the vertical direction, and the displacement of the pump tower in the horizontal direction is only limited.

The pump tower base of the prior art is arranged below the pump tower bottom plate, the supporting component is welded below the pump tower bottom plate, and the pump tower base and the pump tower bottom plate supporting component are fixed through special connecting toggle plates.

However, the pump tower foundation of the prior art has the following problems:

1) The gap between the bottom plate of the pump tower and the bottom of the storage tank is only about 600mm, so that the pump tower base is very inconvenient to install in a narrow space;

2) The supporting member below the bottom plate of the pump tower is arranged in a rectangular frame, the pump tower base is embedded in the rectangular frame, and the requirement on the installation precision is very high, so that the site construction is not facilitated;

3) The connecting toggle plate of the pump tower base and the supporting member is complex and various, and the requirement on the installation precision is high, so that the site construction is not facilitated.

Disclosure of Invention

In view of the above problems in the prior art, the embodiments of the present application provide a pump tower base for fixing a pump tower for loading and/or unloading liquid cargo, where the pump tower base passes through a pump tower bottom plate, and components of the pump tower base are symmetrically arranged, and the pump tower base has a simple structure, convenient installation, convenient construction, low precision requirement, and safe and reliable base, and is of great practical value.

The embodiment of the application provides a pump tower base of a low-temperature liquid cargo storage tank, which is used for limiting the position of a pump tower for filling liquid into the low-temperature liquid cargo storage tank, and comprises the following components:

the lower part of the cylinder is fixedly connected with the bottom wall of the low-temperature liquid cargo storage tank, supporting piles symmetrically arranged relative to the cylinder are arranged in the middle of the cylinder, and a connecting coaming plate positioned outside the cylinder is arranged at the upper part of the cylinder;

a top block, one side of which is connected with the connecting coaming, and the other side of which is fixedly connected with a pump tower bottom plate of the pump tower through a connecting piece;

when the position of the pump tower is limited through the pump tower base, the upper connecting coaming of the barrel upwards penetrates through the limiting holes which are formed in the center of the pump tower base plate and are matched with the connecting coaming in shape and are sequentially connected with the formed frame body structure, the jacking blocks are arranged in a plurality of center line center symmetry mode relative to the vertical direction of the barrel, one side of each jacking block is fixedly connected with the pump tower base plate through a fixed connecting piece, the other side of each jacking block is fixedly connected with the connecting coaming upwards penetrating through the pump tower base plate, the position, connected with the connecting coaming, of each jacking block is located in a middle setting area in the vertical direction of the connecting coaming, and the distance between the connecting coaming and the inner side edge of the limiting holes is not greater than 150mm.

In some embodiments of the application, the lower half of the cylinder is provided with two connecting rings which are fixedly connected with a main shielding layer and a secondary shielding layer in the low-temperature liquid cargo storage tank respectively;

the number of the supporting piles is two, and the supporting piles are arranged in parallel with the bottom of the low-temperature liquid cargo storage tank.

In some embodiments of the present application, each support pile comprises two support pile enclosure walls arranged in parallel and fixedly connected to the outer wall of the cylinder, a support pile panel at one end of the support pile enclosure wall away from the cylinder and simultaneously fixedly connected to the two support pile enclosure walls, and a support pile flat plate arranged between the two support pile enclosure walls and simultaneously fixedly connected to the outer wall of the cylinder, the support pile panel and the outer wall of the cylinder; wherein,

the support pile plate is located in a middle region in the height direction of the support pile.

In some embodiments of the application, 4 connecting coamings are arranged at the upper part of the cylinder body and are enclosed to form a square frame structure;

the top of connecting the bounding wall flushes with the up end of barrel, and square frame construction's centre is equipped with the support flat board with the bottom parallel arrangement of low temperature liquid cargo storage tank, and the support flat board is in the middle part region of connecting the bounding wall in the direction of height, and sets up perpendicularly or parallel arrangement with connecting the bounding wall.

In some embodiments of the present application, a plurality of horizontal reinforcing plates are sequentially arranged in the cylinder along the height direction thereof, and at least one of the plurality of horizontal reinforcing plates comprises a horizontal reinforcing plate which is respectively arranged in the same plane with the support pile flat plate, the support flat plate and the connecting ring;

the horizontal reinforcing plate is of a flat plate structure matched with the inner side wall of the cylinder body or of an annular plate structure matched with the inner side surface of the cylinder body.

In some embodiments of the application, after the upper connecting coaming of the cylinder upwards passes through the limiting holes which are formed in the center of the pump tower bottom plate and are matched with the shape of the frame body structure formed by sequentially connecting the connecting coamings, the height of the upper edge of the cylinder higher than the pump body bottom plate is 300-500 mm, and the connecting coamings are all positioned above the pump body bottom plate.

The number of the top blocks is 4, and the top blocks correspond to one connecting coaming respectively;

the top block is fixedly connected with a connecting toggle plate welded and fixed on the bottom plate of the pump tower through bolts.

In some embodiments of the application, each top block comprises:

the top block panel is provided with a clamping groove for embedding a top block connecting plate on the side surface facing the connecting coaming, and the top block connecting plate is made of elastic PE material;

two parallel top block vertical support plates which are mutually spaced and fixedly arranged on one side of the top block panel away from the connecting coaming and are perpendicular to the top block panel, and each top block vertical support plate is provided with a waist round hole which is fixedly connected with the connecting rib plate;

the horizontal support plate is arranged between the two jacking block vertical support plates and is positioned in the middle area of the jacking block vertical support plate in the height direction, and the horizontal support plate is fixedly connected with the jacking block vertical support plate and the jacking block panel.

In some embodiments of the present application, two kidney holes are disposed on each top block vertical support plate.

In some embodiments of the application, the diagonal lines of the square frame structure formed by the connection surrounding plates are consistent with the longitudinal direction of the ship body where the connection surrounding plates are arranged.

Compared with the prior art, the pump tower base of the low-temperature liquid cargo storage tank has the beneficial effects that: according to the arrangement mode, the top of the pump tower base passes through the reserved holes in the pump tower bottom plate by changing the arrangement mode of the pump tower base and the pump tower bottom plate, the arrangement mode can enable the connecting members of the pump tower base and the pump tower to be arranged on the pump tower bottom plate, the space above the pump tower bottom plate is large, the construction environment can be effectively improved, the upward installation is avoided, and the installation of the connecting members between the pump tower and the pump tower base is facilitated; the connecting components are arranged on the bottom plate of the pump tower, and the periphery of the connecting components is provided with more supporting components, so that the cantilever beam type stress type of the existing design can be changed into the type of bearing only in-plane pressure, the safety of the components is improved, and the whole stability of the pump tower is improved; the pump tower base and the holes reserved in the pump tower bottom plate have a certain gap, and meanwhile, the connecting members of the pump tower base and the pump tower adopt kidney-shaped bolt holes, so that the requirement on the installation precision can be effectively reduced by the connecting mode, and the rapid positioning and assembly of the pump tower and the pump tower base are realized; the connecting members of the pump tower base and the pump tower are four identical jacking blocks, and the jacking blocks with the same design are beneficial to reducing the types and specifications of parts assembled on site and improving the installation efficiency; the four ejector blocks arranged in a diamond manner can bear longitudinal and transverse loads at the same time, and the safety of connection between the pump tower base and the pump tower can be effectively improved.

Drawings

FIG. 1 is a schematic axial view of a pump tower base and pump tower bottom plate connection of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 2 is a schematic top view of a pump tower base and pump tower bottom plate connection of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 3 is a schematic top view of A-A of FIG. 2;

FIG. 4 is a schematic diagram illustrating an isometric view of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 5 is a schematic top view of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 6 is a schematic side view of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 7 is a schematic diagram of a cross-sectional center view of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 8 is a schematic diagram illustrating an isometric view of a top block of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 9 is a schematic top view of a top block of a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 10 is an isometric view of a pump tower corresponding to a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 11 is a schematic front view of a pump tower corresponding to a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 12 is a schematic top view of the upper portion of a pump tower corresponding to the pump tower base of the cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 13 is a schematic top view of a lower portion of a pump tower corresponding to a pump tower base of a cryogenic liquid cargo tank provided by an embodiment of the application;

FIG. 14 is a schematic diagram of a pump tower base of a cryogenic liquid cargo tank according to an embodiment of the present application looking down on the injection tube and the injection tube clamp of the pump tower;

FIG. 15 is a schematic axial view of a pump tower base of a cryogenic liquid cargo tank corresponding to an injection tube clamp of a pump tower provided by an embodiment of the present application;

FIG. 16 is a schematic side view of a pump tower base of a cryogenic liquid cargo tank corresponding to an injection tube clamp of a pump tower provided by an embodiment of the application;

FIG. 17 is an isometric view of a pump tower base of a cryogenic liquid cargo tank corresponding to an injection tube and a liquid impact prevention device of a pump tower provided by an embodiment of the present application;

FIG. 18 is a schematic axial view of a liquid impact prevention device provided at a position of a pump tower base of a cryogenic liquid cargo tank corresponding to an opening of an injection pipe of the pump tower according to an embodiment of the present application;

FIG. 19 is a schematic top view of a liquid impact prevention device provided at a position of a pump tower base of a cryogenic liquid cargo tank corresponding to an opening of an injection pipe of the pump tower according to an embodiment of the present application;

FIG. 20 is a schematic side view of a liquid impact prevention device provided at a position of a pump tower base of a cryogenic liquid cargo tank corresponding to an opening of an injection pipe of the pump tower according to an embodiment of the present application;

fig. 21 is a schematic front view of a liquid impact preventing device provided at a position of a pump tower base of a cryogenic liquid cargo tank corresponding to an opening of an injection pipe of the pump tower according to an embodiment of the present application.

Reference numerals

11. A first discharge tube; 12. a second discharge tube; 13. an injection tube; 14. an emergency discharge tube; 15. a pump tower bottom plate; 16. a horizontal support; 17. diagonal bracing; 18. a discharge pump; 19. a liquid impact prevention device; 21. a first elbow; 22. a second elbow; 23. a third elbow; 30. a pipe clamp member; 31. the pipe clamp is connected with a toggle plate; 32. a pipe clamp cushion block; 33. a tube clamp sleeve; 40. an opening; 41. a bottom plate; 42. a sidewall; 43. a surrounding wall; 44. a horizontal fixing plate; 45. a first flow hole; 46. a second water flow hole; 47. circular arc side edges; 50. a pump tower base; 51. a top block; 52. a connecting toggle plate; 53. a limiting hole; 61. a cylinder; 62. a connecting ring; 63. connecting the coaming; 64. supporting the pile panel; 65. supporting the pile surrounding wall; 66. supporting the pile flat plate; 67. a horizontal reinforcing plate; 68. a support plate; 71. a vertical support plate; 72. a top block panel; 73. a top block connecting plate; 74. a horizontal support plate; 75. waist round hole.

Detailed Description

The present application will be described in detail below with reference to the drawings and detailed description to enable those skilled in the art to better understand the technical scheme of the present application.

Various aspects and features of the present application are described herein with reference to the accompanying drawings.

These and other characteristics of the application will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

It is also to be understood that, although the application has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present application will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well known and/or repeated functions and constructions are not described in detail to avoid obscuring the application in unnecessary or unnecessary detail from historical operations of the user. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.

The embodiment of the application provides a pump tower base 50 of a low-temperature liquid cargo storage tank, wherein the pump tower base 50 is used for limiting the position of a pump tower for filling/unloading liquid into the low-temperature liquid cargo storage tank, the low-temperature liquid cargo storage tank is used for storing gases such as liquefied natural gas, ethane gas and the like, and the pump tower base 50 can be used as the low-temperature liquid cargo storage tank of a liquid transport ship or as the low-temperature liquid cargo storage tank of other ships taking the low-temperature liquid cargo as fuel, as shown in fig. 1 to 9, and the pump tower base 50 comprises:

the lower part of the cylinder 60 is fixedly connected with the bottom wall of the low-temperature liquid cargo storage tank, the middle part of the cylinder 61 is provided with supporting piles symmetrically arranged relative to the cylinder 61, and the upper part of the cylinder 61 is provided with a connecting coaming 63 positioned outside the cylinder 61; when the position of the pump tower is limited by the pump tower base 50, the upper connecting coaming 63 of the cylinder 61 upwards passes through the limiting holes 53 which are formed in the center of the pump tower bottom plate 15 and are matched with the shape of the frame structure formed by sequentially connecting the connecting coamings 63, the top blocks 51 are arranged in a plurality of ways and are symmetrical to the center line of the vertical direction of the cylinder 61, one side of each top block 51 is fixedly connected with the pump tower bottom plate 15 through the connecting toggle plate 52, the connecting coamings 63 which upwards pass through the pump tower bottom plate 15 are fixed on the other side of each top block 51, the connecting coamings 63 are connected in the middle setting area of the connecting coamings 63 in the vertical direction, and the distance between the connecting coamings 63 sequentially connected with the inner side edges of the formed frame structure and the limiting holes 53 is not more than 150mm, namely, the gap between the connecting coamings 63 sequentially connected with the formed frame structure and the limiting holes 53 can be 50-150mm, so that when the pump tower is installed, the pump tower base 50 can conveniently pass through the limiting holes 53 by adopting the arrangement mode, and rapid positioning assembly of the pump tower.

In this embodiment, two connection rings 62 are provided at the lower half of the cylinder 61, the two connection rings 62 are fixedly connected with the main shielding layer and the secondary shielding layer in the low-temperature liquid cargo storage tank respectively, and the tightness of the low-temperature liquid cargo storage tank can be ensured after the cylinder 61 is fixedly connected with the main shielding layer and the secondary shielding layer in the low-temperature liquid cargo storage tank through the two connection rings 62; the two support piles are arranged in parallel with the bottom of the low-temperature liquid cargo storage tank, and the two support piles are combined in a symmetrical arrangement mode about the barrel 61, so that good stability of the pump tower base 50 can be guaranteed, specifically, one support pile is used for supporting a gas pump or a sweeping spray pump, and the other support pile is used for supporting a liquid level measurer.

In some embodiments of the present application, each support pile includes two support pile surrounding walls 65 disposed in parallel and fixedly connected to the outer wall of the cylinder 61, a support pile panel 64 disposed at one end of the support pile surrounding walls 65 away from the cylinder 61 and simultaneously fixedly connected to the two support pile surrounding walls 65, and a support pile flat plate 66 disposed between the two support pile surrounding walls 65 and simultaneously fixedly connected to the outer wall of the cylinder 61, the support pile panel 64 and the outer wall of the cylinder 61, wherein the support pile surrounding walls 65, the support pile panel 64 and the cylinder 61 enclose to form an approximately rectangular frame structure; wherein, the support pile flat plate 66 is located in the middle area of the support pile in the height direction, and as a preferred scheme, the support pile flat plate 66 is located at the position of half the height of the support pile to ensure the stability of supporting the support pile, and meanwhile, the support pile flat plate 66 is arranged in parallel with the bottom of the low-temperature liquid cargo storage tank, and the number of the support pile panels 64 is at least one, so that the number can be increased according to the strength requirement. In addition, in the present embodiment, the two supporting pile surrounding walls 65 are formed with an extension portion at one end connected with the cylinder 61, so as to further increase the length of the supporting pile surrounding wall 65 fixedly connected with the cylinder 61, and further improve the overall supporting strength and stability of the supporting pile.

In some embodiments of the present application, the number of the connecting coamings 63 arranged at the upper part of the cylinder 61 is 4, and the connecting coamings are vertically arranged and are mutually connected to form a square frame structure, and the cylinder 61 can be a cylindrical cylinder or a regular prism cylinder; the top end of the connecting coaming 63 is flush with the upper end surface of the cylinder 61, a support flat plate 68 parallel to the bottom of the low-temperature liquid cargo tank is arranged in the middle of the square frame structure, and the support flat plate 68 is positioned in the middle area of the connecting coaming 63 in the height direction and is perpendicular to or parallel to the connecting coaming 63.

In this embodiment, a plurality of horizontal reinforcing plates 67 are sequentially disposed in the cylinder 61 from top to bottom along the height direction thereof, and at least one horizontal reinforcing plate 67 disposed in the same plane as the support pile flat plate 66, the support flat plate 68 and the connection ring 62 is included in the plurality of horizontal reinforcing plates 67, that is, a horizontal reinforcing plate 67 is disposed in the planes corresponding to the positions of the support pile flat plate 66, the support flat plate 68 and the connection ring 62, so as to serve as back support of the corresponding plate, and further enhance the overall strength of the support pile; meanwhile, the horizontal reinforcing plate 67 may be a flat plate structure adapted to the inner side wall of the cylinder 61 or an annular plate structure adapted to the outer side wall of the cylinder 61, specifically selected according to the strength requirement of the pump tower base 50, that is, if the cylinder 61 is a cylindrical cylinder, the horizontal reinforcing plate 67 may be a circular flat plate structure or an annular plate structure.

In some embodiments of the present application, the upper connecting coaming 63 of the cylinder 61 passes upward through the limiting holes 53 formed in the center of the pump bottom plate 15 and adapted to the shape of the frame structure formed by sequentially connecting the connecting coaming 63, the height of the upper edge of the cylinder 60 above the pump bottom plate is 300mm-500mm, and the connecting coaming 63 is located above the pump bottom plate.

In some embodiments of the application, the connecting coaming 63 is 4 pieces and encloses to form a square frame structure; 4 top blocks 51 are respectively corresponding to one connecting coaming 63, and each top block 51 is positioned at the center of the corresponding connecting coaming; the top block 51 is specifically fixedly connected with a connecting toggle plate 52 welded and fixed on the pump tower bottom plate 15 through bolts, and the pump tower base 50 realizes the limit of the pump tower through the top block 51.

In the present embodiment, each top block 51 includes: a top block panel 72, a clamping groove for embedding a top block connecting plate 73 is formed in a side surface facing the connecting coaming 63, the clamping groove is formed in a central area of the top block panel 72, so that the embedded and installed top block connecting plate 73 is positioned in the central area of the top block panel 72, the top block panel 72 and the top block connecting plate 73 can be tightly connected through the clamping groove, the top block connecting plate 73 is made of an elastic PE material, and further after the top block connecting plate 73 is connected with the connecting coaming 63, the connection tightness between the top block 51 and the connecting coaming 63 can be improved; two parallel vertical support plates 71, which are fixed on one side of the top block panel 72 away from the connecting coaming 63 at intervals, are arranged vertically to the top block panel 72, are vertically arranged, and are provided with kidney-round holes 75 for fixedly connecting with the connecting rib plates 52 on each vertical support plate 71; the horizontal support plate 74 is disposed between the two vertical support plates 71 and is located in a middle area of the vertical support plates 71 in the height direction, and the horizontal support plate 74 is fixedly connected with the vertical support plates 71 and the top block panel 72. The connecting toggle plate 52 is located at the upper end of the pump tower bottom plate 15 and is connected with other supporting members of the pump tower bottom plate 15 through welding, and the arrangement mode can effectively transfer supporting counter force generated by the pump tower base 50 to the other supporting members of the pump tower bottom plate 15, so that local stress concentration is avoided.

In the above embodiment, two waist round holes 75 are disposed on each vertical support plate 71 and are used for fixing with the connecting toggle plate 52 disposed on the pump tower bottom plate 15 through bolts, and the waist round holes 75 are used for fine tuning the distance between the top block 51 and the connecting toggle plate 52, so as to reduce the installation accuracy requirements of the pump tower and the pump tower base 50.

Meanwhile, in the present embodiment, the diagonal lines of the square frame structure formed by enclosing the connecting coamings 63 are consistent with the longitudinal direction of the ship body, so that each top block 51 can bear both longitudinal and transverse loads, and the safety of the connection between the pump tower foundation 50 and the pump tower can be effectively improved.

In the present embodiment, as shown in fig. 10 to 16, the pump tower includes: the first unloading pipe 11, the second unloading pipe 12, the injection pipe 13 and the emergency unloading pipe 14 are vertically arranged, wherein the first unloading pipe 11, the second unloading pipe 12, the injection pipe 13 and the emergency unloading pipe 14 are fixedly connected through parallel supports in sequence and form a prismatic structure with a quadrangular cross section, 4 risers in total form a quadrangular cross section main body frame, namely four risers are communicated and supported in parallel to form a prismatic with a quadrangular cross section; meanwhile, the first unloading pipe 11 is provided with a first elbow 21 at the middle lower part in the height direction, and the first elbow 21 is positioned in the plane where the first unloading pipe 11 and the emergency unloading pipe 14 are positioned; the second unloading pipe 12 is provided with a second elbow 22 at the middle lower part in the height direction, and the second elbow 22 is positioned in the plane of the second unloading pipe 12 and the emergency unloading pipe 14; the injection pipe 13 is provided with a third elbow 23 at the middle lower part in the height direction, and the third elbow 23 is positioned in the plane where the injection pipe 13 and the emergency unloading pipe 14 are positioned; the area of the quadrangular cross section formed by the part of the injection pipe 13 and the emergency unloading pipe 14 at the lower part of the third elbow 23 is 2 times to 3 times of the area of the quadrangular cross section formed by the upper part of the second unloading pipe 12 and the upper part of the emergency unloading pipe 14 at the upper part of the injection pipe 13, so that a space for arranging related equipment can be formed among the first unloading pipe 11, the second unloading pipe 12, the injection pipe 13 and the emergency unloading pipe 14, namely, the space formed by the first elbow 21, the second unloading pipe 12, the injection pipe 13 and the emergency unloading pipe 14 in the lower area of the pump tower is increased through the first elbow 22, the third elbow 23, the second unloading pipe 12, the injection pipe 13 and the emergency unloading pipe 14, and equipment such as a pump 18 is convenient to install and arrange, and meanwhile, the pump tower has a variable cross section structure.

In some embodiments of the application, the parallel supports are multiple layers, the parallel supports of each layer are connected with 4 vertical risers, annular supports are formed on the same horizontal plane, diagonal braces 17 are arranged between two adjacent layers of parallel supports, so as to resist the torque of the pump tower, and the pump tower is connected into a whole truss structure by arranging the horizontal supports 16 and the diagonal braces 17 in the frame structure of the pump tower, so that the shaking load is effectively resisted, and the rigidity and the torsion resistance of the pump tower are improved.

Further, since the injection is performed through the injection pipe 13 when injecting the cryogenic liquid cargo into the storage tank, there is a possibility that a temperature difference exists between the injection pipe 13 and other pump tower components, and an unsynchronized expansion and contraction occurs, if the injection pipe 13 is connected with the horizontal support 16 and the diagonal support 17 by welding, a large temperature stress is caused, and a structural safety risk is caused, the injection pipe 13 is fixedly connected with the parallel support through the pipe clamp part 30, the pipe clamp part 30 can enable the injection pipe 13 to move in the vertical direction and limit the movement of the injection pipe 13 in the horizontal direction, the pipe clamp part 30 can be multiple, that is, the injection pipe 13 is respectively connected with one layer of parallel support through at least one pipe clamp part 30, each pipe clamp part 30 comprises a pipe clamp sleeve 33 and a pipe clamp cushion block 32, wherein the pipe clamp sleeve 33 is concentrically arranged with the injection pipe 13, at least two pipe clamp cushion blocks 32 fixedly connected with the pipe clamp sleeve 33 are arranged between the pipe clamp sleeve 33 so as to enable a space of at least 10mm to be formed between the pipe clamp sleeve 33 and the injection pipe clamp sleeve 13, and the pipe clamp cushion block 32 is fixedly connected with the pipe clamp sleeve 33 through a connecting piece, and the pipe clamp cushion block 33 can be a bolt or a rivet or the like.

In this embodiment, the injection tube 13 is fixedly connected to the parallel support through the tube clamp sleeve 33, and at least one tube clamp connecting toggle plate 31 is disposed at the connection position between the tube clamp sleeve 33 and the parallel support, specifically, one tube clamp sleeve 33 is fixedly connected to two horizontal supports 16 in the same layer at the same time, and then a large-size tube clamp connecting toggle plate 31 can be disposed between the two horizontal supports 16, meanwhile, the large-size tube clamp connecting toggle plate 31 is fixedly connected to the two horizontal supports 16 and the tube clamp sleeve 33 at the same time, and a smaller-size tube clamp connecting toggle plate 31 is disposed at the outer side of the two horizontal supports 16 away from the large-size tube clamp connecting toggle plate 31, so as to respectively fixedly connect the corresponding horizontal supports 16 and the tube clamp sleeve 33, further improve the rigidity of the connection position between the horizontal supports 16 and the tube clamp sleeve 33, and reduce local stress concentration.

The lower extreme and the pump tower bottom plate 15 fixed connection of injection pipe 13, injection pipe 13 keeps vertical setting in being close to storage tank bottom position, and the lower extreme opening of injection pipe 13 is located the lower part of pump tower bottom plate 15, the opening part of injection pipe 13 is equipped with prevents liquid impact device 19, carry out the water conservancy diversion through preventing liquid impact device 19 to the liquid of injecting through injection pipe 13, and then avoid direct impact liquid cargo storage tank when cryogenic liquid (liquid cargo) is injected, slow down the velocity of flow when cryogenic liquid is injected through injection pipe 13, avoid the influence of fluid jet, wherein, prevent the fluid impact device 19 includes as shown in fig. 17 to 21: a bottom plate 41 provided below the opening 40 of the injection pipe 13 and having a guide surface formed on a side facing the opening 40, the bottom plate 41 being capable of protecting the tank from the fluid in the tank and the falling object, the bottom plate 41 being provided specifically below the opening 40 of the injection pipe 13 and being spaced apart from the opening 40; two parallel side walls 42, wherein the lower end of each side wall 42 is fixedly connected with the bottom plate 41, the upper end of each side wall 42 is fixedly connected with the outer side wall 42 at the bottom end of the injection pipe 13 through a horizontal fixing plate 44, and the side wall 42 is a main supporting device of the fluid impact preventing device; two surrounding walls 43, which are respectively arranged between the two side walls 42, wherein the two surrounding walls 43 are arranged in parallel and mutually perpendicular to the two side walls 42, and are connected with the two side walls 42 to form a whole, so as to form a rectangular surrounding wall 43 structure; wherein, the two side walls 42 and the two surrounding walls 43 form a rectangular surrounding wall structure, at least one wall is provided with water holes, the number of walls provided with water holes in the rectangular surrounding wall structure, the number of water holes and the size of the openings are determined based on the flow velocity and the flow direction of the fluid guided by the guide plate, that is, the flow velocity and the flow direction of the fluid guided by the side walls 42 or the surrounding walls 43 can be controlled by adjusting the size of the openings of the water holes, so that the fluid injected into the storage tank is deflected and preferably injected in the opposite direction to the equipment to be protected, and the sum of the sectional areas of the openings of all the water holes is larger than the sectional area of the opening 40 of the water injection pipe 13.

In order to enable faster flow guiding of the injected liquid, in some embodiments of the present application, the bottom plate 41 is a spherical plate, and the opening 40 of the spherical plate, which faces the injection pipe 13, is used as a flow guiding surface, the center of the sphere of the spherical plate is located on the vertical axis of the injection pipe 13, the bottom plate 41 is rectangular in a top view and has an area larger than that of the opening 40 of the injection pipe 13, and compared with the bottom plate 41 on a horizontal plane, the bottom plate 41 of the spherical plate can enable the vertically injected liquid to generate a lateral velocity component, so that the fluid can be uniformly and quickly guided to the periphery, and the impact load of the injected liquid on the bottom plate 41 can be effectively reduced, so as to protect the fluid impact preventing device.

In addition, in order to better realize the water conservancy diversion to the liquid, in this embodiment, lateral wall 42 is the flat panel, if set up first water hole 45 on lateral wall 42, then first water hole 45 set up and be close to bottom plate 41 side and set up in the middle at lateral wall 42, and the upper portion of first water hole 45 is half waist circle shape setting, and adopts the floor arrangement to realize the water conservancy diversion to the injection liquid, and help the quick derivation of fluid.

Meanwhile, in the present embodiment, both side edges of the surrounding wall 43 are connected with the side wall 42, and the bottom edge of the surrounding wall 43 is fixedly connected with the bottom plate 41; if the second water flow hole 46 is formed on the surrounding wall 43, the second water flow hole 46 is formed on the surrounding wall 43 near the bottom plate 41 and is centrally disposed, semi-kidney-shaped, and arranged in a floor manner, so as to guide the injected liquid and facilitate rapid guiding of the fluid.

In this embodiment, the horizontal fixing plate 44 is located at the top of the side wall 42, the side of the side wall facing the injection tube 13 is a circular arc side 47, the radius of the circular arc side 47 is the same as the radius of the outer circle of the injection tube 13, and the horizontal fixing plate 44 and the outer wall of the injection tube 13 are fixed by welding; the horizontal fixing plate 44 is positioned at a level higher than the level of the opening 40 of the injection tube 13, and the vertical spacing is 30mm-100mm, so that the welding of the horizontal fixing plate 44 is facilitated. Meanwhile, the horizontal fixing plates 44 on the side walls 42 on both sides are symmetrically arranged with respect to the injection pipe 13 to effectively fix the fluid impact preventing device at the lower end of the injection pipe 13, and prevent the twisting of the fluid impact preventing device, thereby ensuring the stability of the device.

As can be seen from the above technical solution, according to the pump tower base 50 of the cryogenic liquid cargo tank provided by the embodiment of the present application, by changing the arrangement pattern of the pump tower base 50 and the pump tower bottom plate 15, the top of the cylinder 61 of the pump tower base 50 is passed through the opening reserved in the pump tower bottom plate 15, and the arrangement pattern can set the connection members (the top block 51, the connecting toggle plate 52, the connecting coaming 63, etc.) of the pump tower base 50 and the pump tower on the pump tower bottom plate 15, so that the space above the pump tower bottom plate 15 is larger, the construction environment can be effectively improved, the looking-up assembly is avoided, and the installation of the connection members between the pump tower and the pump tower base 50 is facilitated; the connecting components are arranged on the pump tower bottom plate 15, more supporting components can be arranged on the periphery of the connecting components, the cantilever beam type stress type of the existing design can be changed into the cantilever beam type stress type which only bears the in-plane pressure, the safety of the components is improved, and the whole stability of the pump tower is improved; a certain gap exists between the pump tower base 50 and the limit hole 53 reserved in the pump tower bottom plate 15, and meanwhile, a connecting member of the pump tower base 50 and the pump tower adopts a waist round bolt hole 75, so that the requirement on the installation precision can be effectively reduced by the connecting mode, and the rapid positioning assembly of the pump tower and the pump tower base 50 is realized; the pump tower base 50 and the connecting member of the pump tower are four identical top blocks 51, and the same design of the top blocks 51 is beneficial to reducing the variety and specification of parts assembled on site and improving the installation efficiency; the four top blocks 51 arranged in a diamond shape can bear longitudinal and transverse loads at the same time, so that the safety of the connection of the pump tower base 50 and the pump tower can be effectively improved.

The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.

Claims (10)

1. A pump tower foundation for a cryogenic liquid cargo tank, the pump tower foundation for position defining a pump tower for filling/discharging liquid into/from the cryogenic Wen Yehuo tank, the pump tower foundation comprising:

the lower part of the cylinder is fixedly connected with the bottom wall of the low-temperature storage tank, supporting piles symmetrically arranged relative to the cylinder are arranged in the middle of the cylinder, and a connecting coaming plate positioned at the outer side of the cylinder is arranged at the upper part of the cylinder;

the top blocks are arranged in a plurality and are arranged symmetrically about the center line of the vertical direction of the cylinder body;

when the position of the pump tower is limited through the pump tower base, the upper connecting coaming of the cylinder body upwards passes through a limiting hole which is formed in the center of the pump tower base plate and is matched with the shape of the formed frame body structure and is sequentially connected with the connecting coaming, one side of the top block is fixedly connected with the pump tower base plate through a fixed connecting piece, the other side of the top block is fixedly connected with the connecting coaming which upwards passes through the pump tower base plate, the position of the top block connected with the connecting coaming is located in a middle setting area in the vertical direction of the connecting coaming, and the connecting coaming is sequentially connected with the spacing between the formed frame body structure and the inner side edge of the limiting hole, wherein the spacing is not more than 150mm.

2. The pump tower foundation of claim 1, wherein the pump tower of the cryogenic liquid cargo tank is,

the lower half part of the cylinder body is provided with two connecting rings which are respectively and fixedly connected with a main shielding layer and a secondary shielding layer in the low Wen Yehuo storage tank;

the number of the supporting piles is two, and the supporting piles are arranged in parallel with the bottom of the low Wen Yehuo storage tank.

3. The pump tower foundation of claim 2, wherein the pump tower of the cryogenic liquid cargo tank is,

each supporting pile comprises two supporting pile surrounding walls which are arranged in parallel and fixedly connected with the outer wall of the cylinder, a supporting pile panel which is positioned at one end of the supporting pile surrounding wall away from the cylinder and simultaneously fixedly connected with the two supporting pile surrounding walls, and a supporting pile flat plate which is arranged between the two supporting pile surrounding walls and simultaneously fixedly connected with the outer wall of the cylinder, the supporting pile panel and the outer wall of the cylinder; wherein,

the support pile flat plate is located in the middle area of the support pile in the height direction.

4. The pump tower foundation of claim 1, wherein the pump tower of the cryogenic liquid cargo tank is,

the number of the connecting coamings arranged at the upper part of the cylinder body is 4, and the connecting coamings are enclosed to form a square frame structure;

the top of connecting the bounding wall with the up end of barrel flushes, square frame construction's centre be equipped with the bottom parallel arrangement's of low Wen Yehuo storage tank support flat board, support flat board be in connect the middle part region in the direction of height of bounding wall, and with connect the bounding wall perpendicular setting or parallel arrangement.

5. The pump tower foundation of claim 4, wherein the pump tower of the cryogenic liquid cargo tank is,

a plurality of horizontal reinforcing plates are sequentially arranged in the cylinder body along the height direction of the cylinder body, and the horizontal reinforcing plates at least comprise horizontal reinforcing plates which are respectively arranged in the same plane with the support pile flat plate, the support flat plate and the connecting ring;

the horizontal reinforcing plate is of a flat plate structure matched with the inner side wall of the cylinder body or of an annular plate structure matched with the inner side surface of the cylinder body.

6. The pump tower foundation of claim 1, wherein the pump tower of the cryogenic liquid cargo tank is,

the upper connecting coaming of the barrel upwards passes through the limiting holes which are formed in the center of the pump tower bottom plate and are matched with the connecting coaming in shape and are sequentially connected to form a frame body structure, the upper edge of the barrel is higher than the pump body bottom plate by 300-500 mm, and the connecting coamings are all positioned above the pump body bottom plate.

7. The pump tower foundation of claim 1, wherein the pump tower of the cryogenic liquid cargo tank is,

the connecting coaming is 4, and the connecting coaming is enclosed to form a square frame structure;

the number of the top blocks is 4, and the top blocks correspond to one connecting coaming respectively;

the top block is fixedly connected with a connecting toggle plate welded and fixed on the bottom plate of the pump tower through bolts.

8. The pump tower foundation of claim 7, wherein each of said top blocks comprises:

the top block panel is provided with a clamping groove for embedding a top block connecting plate on the side face facing the connecting coaming, and the top block connecting plate is made of elastic PE material;

two parallel top block vertical support plates which are mutually spaced and fixedly arranged on one side, far away from the connecting coaming, of the top block panel and are vertically arranged with the top block panel, and each top block vertical support plate is provided with a waist round hole which is fixedly connected with the connecting rib plate;

the horizontal support plate is arranged between the two top block vertical support plates and is positioned in the middle area of the top block vertical support plate in the height direction, and the horizontal support plate is fixedly connected with the top block vertical support plates and the top block panel.

9. The pump tower foundation of claim 8, wherein the pump tower of the cryogenic liquid cargo tank is,

two kidney holes distributed up and down are arranged on each top block vertical supporting plate.

10. The pump tower foundation of claim 7, wherein the pump tower of the cryogenic liquid cargo tank is,

the diagonal lines of the square frame structure formed by surrounding the connecting surrounding plates are consistent with the longitudinal direction of the ship body where the connecting surrounding plates are located.