LNG gas storage tank top fixed cooling water equipment

Abstract

The utility model relates to the technical field of LNG (Liquefied Natural Gas) storage tanks, and discloses LNG storage tank top fixed cooling water equipment, which comprises a plurality of support frames, the support frames are arranged on the tank wall of the upper end of the LNG storage tank, and a bearing plate is detachably arranged on the support frames; the spraying part comprises a first cooling water conveying pipe, the first cooling water conveying pipe is installed on the bearing plate, a second cooling water conveying pipe is rotatably installed at the upper end of the first cooling water conveying pipe, a flow dividing part is connected to the lower end of the first cooling water conveying pipe, and a plurality of spraying pipes are installed on the flow dividing part; and a driving part for driving the spraying pipe to rotate and uniformly spray is further mounted on the bearing plate. The supporting component is used for fixedly arranging the spraying component on the top of the LNG gas storage tank, the stability of spraying and cooling of the LNG gas storage tank by the spraying component is guaranteed, the driving component is used for rotating a plurality of spraying pipes on the spraying component, the spraying uniformity of the spraying component is improved, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG gas storage tanks, in particular to a fixed cooling water device on the top of an LNG gas storage tank. Background Art

[0002] LNG refers to a type of liquefied natural gas, which is a liquid natural gas formed by natural gas being purified and liquefied at ultra-low temperatures. A certain amount of liquefied natural gas in the gas storage tank evaporates, producing BOG gas (boil-off gas). When the ambient temperature is high, the evaporation rate will increase greatly, and the pressure of the gas phase space in the storage tank will increase greatly. According to the national "Regulations on Safety Technical Supervision of Pressure Vessels", the use pressure of the storage tank is not allowed to exceed the design pressure to ensure the safe operation of the storage tank. LNG gas storage tanks will generate high temperatures when in use, and cooling equipment is required to cool the LNG gas storage tank.

[0003] The existing method of cooling LNG gas storage tanks is to open holes in stainless steel pipes to let water spray out from the holes, but it cannot be evenly sprinkled on the tank body, resulting in uneven cooling. In addition, the cooling equipment is fixed on the LNG gas storage tank for a long time and is under the pressure of cooling water for a long time. Therefore, the installation stability and maintenance convenience of the cooling equipment are also crucial. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a fixed cooling water device on the top of an LNG gas storage tank to solve the problem raised in the background technology: the existing method of cooling the LNG gas storage tank generally involves opening holes in a stainless steel pipe to allow water to spray out from the holes, but the water cannot be evenly sprinkled on the tank body, resulting in uneven cooling; in addition, the cooling treatment equipment is fixed on the LNG gas storage tank for a long time and is subjected to the pressure of the cooling water for a long time, so the installation stability and maintenance convenience of the cooling treatment equipment are also crucial issues.

[0006] 2. Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A fixed cooling water device on the top of an LNG gas storage tank, characterized by comprising:

[0009] A support component, comprising a plurality of support frames, wherein the support frames are mounted on the upper tank wall of the LNG gas storage tank, and a bearing plate is detachably mounted on the plurality of support frames; a spray component, comprising a first cooling water delivery pipe, wherein the first cooling water delivery pipe is mounted on the bearing plate via a first stabilizing member, a second cooling water delivery pipe is rotatably mounted on the upper end of the first cooling water delivery pipe via a rotating joint, a diverter is connected to the lower end of the first cooling water delivery pipe, the diverter is located directly below the bearing plate and directly above the top of the LNG gas storage tank, a plurality of spray pipes are mounted on the diverter, and a plurality of spray holes are opened on the spray pipes; wherein a driving component for driving the spray pipe to rotate and spray evenly is also mounted on the bearing plate.

[0010] Preferably, a screw is welded on the upper tank wall of the LNG gas storage tank, and the lower end of the support frame is pressed onto the screw by a nut;

[0011] A slot is provided at the upper end of the support frame, and the end of the carrier plate can be engaged and clamped in the slot, and the end of the carrier plate is fixedly connected to the upper end of the support frame by bolts.

[0012] Preferably, the diverter is a diverter pipe, the lower end of the first cooling water delivery pipe is connected to the top of the diverter pipe, and the open end of the spray pipe is connected to the side wall of the diverter pipe.

[0013] Preferably, a threaded hole is provided at the top of the shunt pipe, a first external thread is provided on the lower end wall of the first cooling water delivery pipe, and the first cooling water delivery pipe is threadedly connected to the shunt pipe;

[0014] A threaded hole is provided on the side wall of the shunt pipe, a second external thread is provided on the pipe wall of the open end of the spray pipe, and the spray pipe is threadedly connected to the shunt pipe.

[0015] Preferably, the spray hole is located directly below the spray pipe and vertically toward the top of the LNG gas storage tank;

[0016] A spray branch pipe is integrally formed at one end of the spray pipe close to the diversion pipe. The spray branch pipe is inclined at 60-80 degrees, and the pipe mouth of the spray branch pipe faces the top center of the LNG gas storage tank.

[0017] Preferably, the first stabilizing member is a first bearing, the first bearing is fixedly mounted at the center of the bearing plate, and the first cooling water delivery pipe is fixedly mounted in the inner ring of the first bearing.

[0018] Preferably, the driving component includes a driving motor, a first transmission gear and a second transmission gear;

[0019] Wherein, a support plate is fixedly installed on the top of the carrying plate, the drive motor is fixedly installed on the support plate, the output shaft of the drive motor is fixedly connected to the top of the second transmission gear, and the second transmission gear is rotated on the carrying plate through a second stabilizing member;

[0020] Wherein, the first transmission gear is fixedly sleeved on the first cooling water delivery pipe, and the first transmission gear is meshed with the second transmission gear for transmission.

[0021] Preferably, the second stabilizing member comprises a second bearing fixedly mounted on the supporting plate, a connecting rod is fixedly connected to the inner ring of the second bearing, and an upper end of the connecting rod is fixedly connected to a lower end of the second transmission gear.

[0022] Preferably, a limiting plate is fixedly mounted on the bearing plate, a limiting groove is provided on the top of the limiting plate, and the second cooling water delivery pipe is engaged and clamped in the limiting groove.

[0023] Preferably, the spray hole located at the outermost end of the spray pipe is vertically perpendicular to the side wall of the tank body of the LNG gas storage tank.

[0024] (III) Beneficial effects

[0025] The utility model provides a fixed cooling water device on the top of an LNG gas storage tank, which has the following beneficial effects:

[0026] 1. In the utility model, the supporting component is used to fix the spray component on the top of the LNG gas storage tank to ensure the stability of the spray component in spraying and cooling the LNG gas storage tank. The driving component is used to rotate the multiple spray pipes on the spray component to improve the uniformity of the spray component spraying and increase the cooling effect.

[0027] Second, in the utility model, the stability of the rotating spraying of the spray pipe can be increased by the first bearing.

[0028] 3. In the present invention, the second bearing can increase the output of the drive motor and the transmission stability of the first transmission gear and the second transmission gear.

[0029] Fourth, in the present invention, the spray pipe, the diversion pipe and the first cooling water delivery pipe are connected by threaded connection, which is convenient for assembly and disassembly, and convenient for maintenance and replacement.

[0030] 5. In the present invention, the top center part of the LNG gas storage tank can be effectively cooled by the inclined spray branch pipe.

[0031] 6. In the utility model, the lower end of the support frame is connected to the LNG gas storage tank through a screw rod, and the upper end of the support frame is connected to the bearing plate through bolts, which is convenient for assembly and disassembly of the support components and convenient for maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0033] Figure 2 It is a three-dimensional schematic diagram of a partial structure of the utility model from the first perspective;

[0034] Figure 3 It is a three-dimensional schematic diagram of a partial structure of the utility model from a second viewing angle;

[0035] Figure 4 It is a side view structural diagram of the driving component of the utility model;

[0036] Figure 5 For the utility model Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0037] Figure 6 It is a three-dimensional schematic diagram of a partial structural section of the spray component of the utility model;

[0038] Figure 7 It is a three-dimensional schematic diagram of the spray pipe of the utility model;

[0039] Figure 8 It is a three-dimensional schematic diagram of the installation of the support frame of the utility model.

[0040] In the figure: 1. support frame; 11. screw rod; 12. nut; 13. slot; 14. bolt; 2. LNG gas storage tank; 3. load-bearing plate; 31. first bearing; 32. second bearing; 321. connecting rod; 33. support plate; 34. limit plate; 4. first cooling water delivery pipe; 41. rotary joint; 42. first external thread; 5. shunt pipe; 6. spray pipe; 61. spray hole; 62. spray branch pipe; 63. second external thread; 7. second cooling water delivery pipe; 8. first transmission gear; 81. second transmission gear; 9. drive motor. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] Embodiment 1

[0043] like Figure 1-8 As shown, the utility model provides a technical solution:

[0044] A fixed cooling water device on the top of an LNG gas storage tank, comprising:

[0045] The supporting component includes a plurality of supporting frames 1, the supporting frames 1 are mounted on the upper tank wall of the LNG gas storage tank 2, and a bearing plate 3 is detachably mounted on the plurality of supporting frames 1;

[0046] The spray component includes a first cooling water delivery pipe 4, which is installed on the bearing plate 3 through a first stabilizing member, and the upper end of the first cooling water delivery pipe 4 is rotatably installed with a second cooling water delivery pipe 7 through a rotating joint 41, and the lower end of the first cooling water delivery pipe 4 is connected with a diverter, which is located directly below the bearing plate 3 and directly above the top of the LNG gas storage tank 2, and a plurality of spray pipes 6 are installed on the diverter, and a plurality of spray holes 61 are opened on the spray pipe 6;

[0047] Among them, a driving component for driving the spray pipe 6 to rotate and spray evenly is also installed on the bearing plate 3;

[0048] The driving component includes a driving motor 9, a first transmission gear 8 and a second transmission gear 81;

[0049] Among them, a support plate 33 is fixedly installed on the top of the carrier plate 3, and the drive motor 9 is fixedly installed on the support plate 33. The output shaft of the drive motor 9 is fixedly connected to the top of the second transmission gear 81, and the second transmission gear 81 is rotated on the carrier plate 3 through the second fixing member;

[0050] The first transmission gear 8 is fixedly sleeved on the first cooling water delivery pipe 4 , and the first transmission gear 8 is meshed with the second transmission gear 81 for transmission.

[0051] By adopting the above technical solution, the support component is used to fix the spray component on the top of the LNG gas storage tank 2 to ensure the stability of the spray component in spraying and cooling the LNG gas storage tank. The driving component is used to rotate the multiple spray pipes 6 on the spray component to improve the uniformity of the spray component spraying and increase the cooling effect. More specifically:

[0052] Four support frames 1 are provided, and a bearing plate 3 is installed between the four support frames 1, so that the installation of the bearing plate 3 is more stable. The first cooling water delivery pipe 4 is installed in the central part of the bearing plate 3. The first cooling water delivery pipe 4 is preferably a stainless steel pipe to improve the stability and life of use. The upper end of the first cooling water delivery pipe 4 can be rotated 360° through a rotating joint 41 to be connected with a second cooling water delivery pipe 7, and the lower end of the first cooling water delivery pipe 4 is connected with a shunt pipe 5. When in use, the cooling water enters the first cooling water delivery pipe 4 and the shunt pipe 5 in turn from the second cooling water delivery pipe 7, and then is delivered to multiple spray pipes 6 through the shunt pipe 5 for spraying and cooling. During this period, the driving motor 9 drives the second transmission gear 81 to rotate, and the second transmission gear 81 drives the first transmission gear 8 on the first cooling water delivery pipe 4 to rotate, thereby driving the spray pipe 6 to rotate and spray, thereby improving the uniformity of the spray, and the sprayed cooling water flows evenly from the top of the conical surface to the entire body of the LNG gas storage tank 2, so as to effectively cool the LNG gas storage tank 2.

[0053] Embodiment 2

[0054] like Figure 1-8 As shown, based on the first embodiment, the following improvements are made:

[0055] In order to facilitate the assembly and disassembly of the support components and facilitate maintenance and replacement, the inventors, in this embodiment, further, a screw 11 is welded on the upper tank wall of the LNG gas storage tank 2, and the lower end of the support frame 1 is pressed on the screw 11 by a nut 12;

[0056] A slot 13 is formed at the upper end of the support frame 1 , and the end of the carrier plate 3 can be engaged and clamped in the slot 13 . The end of the carrier plate 3 is fixedly connected to the upper end of the support frame 1 by bolts 14 .

[0057] Embodiment 3

[0058] like Figure 1-8 As shown, based on the first embodiment, the following improvements are made:

[0059] In order to enable the cooling water to be synchronously input into the interior of the spray pipe 6, the inventor, in the present embodiment, further, the diverter is a diverter pipe 5, the lower end of the first cooling water delivery pipe 4 is connected to the top of the diverter pipe 5, the open end of the spray pipe 6 is connected to the side wall of the diverter pipe 5, and the interior of the diverter pipe 5 is provided with a diverter cavity, and the cooling water enters the interior of each spray pipe 6 through the diverter cavity.

[0060] In order to facilitate the assembly and disassembly of the spray pipe 6, the shunt pipe 5 and the first cooling water delivery pipe 4, and to facilitate maintenance and replacement, the inventor further provides a threaded hole on the top of the shunt pipe 5, and a first external thread 42 is provided on the lower end wall of the first cooling water delivery pipe 4, and the first cooling water delivery pipe 4 is threadedly connected to the shunt pipe 5;

[0061] A threaded hole is formed on the side wall of the shunt pipe 5 , a second external thread 63 is formed on the pipe wall of the open end of the spray pipe 6 , and the spray pipe 6 is threadedly connected to the shunt pipe 5 .

[0062] In order to make the spray pipe 6 spray the top of the LNG gas storage tank 2 more uniformly and improve the spraying efficiency, the inventor further, in this embodiment, the spray hole 61 is located directly below the spray pipe 6 and vertically toward the top of the LNG gas storage tank 2;

[0063] In order to prevent the top center part of the LNG gas storage tank 2 from being unable to be effectively cooled down during the spraying process, the inventor, in the present embodiment, further, has a spray branch pipe 62 integrally formed at one end of the spray pipe 6 close to the diversion pipe 5. The spray branch pipe 62 is inclined at 60~80°, and the pipe mouth of the spray branch pipe 62 is toward the top center part of the LNG gas storage tank 2. Preferably, an inclination angle of 70° is adopted to ensure that the pipe mouth of the spray branch pipe 62 is toward the top center part of the LNG gas storage tank 2.

[0064] In order to make the spray pipe 6 spray the top of the LNG gas storage tank 2 more uniformly, the inventor makes the spray pipe 6 fully cover the top of the LNG gas storage tank 2. In the present embodiment, further, the spray hole 61 located at the outermost end of the spray pipe 6 is vertically perpendicular to the side wall of the tank body of the LNG gas storage tank 2.

[0065] Embodiment 4

[0066] like Figure 1-8 As shown, based on the first embodiment, the following improvements are made:

[0067] In order to increase the stability of the rotating spraying of the spray pipe 6 , the inventor, in this embodiment, further, the first stabilizing member is a first bearing 31 , the first bearing 31 is fixedly mounted on the center of the bearing plate 3 , and the first cooling water delivery pipe 4 is fixedly mounted in the inner ring of the first bearing 31 .

[0068] In order to increase the output of the driving motor 9 and the stability of the transmission of the first transmission gear 8 and the second transmission gear 81, the inventor, in this embodiment, further, the second stabilizing member includes a second bearing 32 fixedly mounted on the supporting plate 3, and a connecting rod 321 is fixedly connected to the inner ring of the second bearing 32, and the upper end of the connecting rod 321 is fixedly connected to the lower end of the second transmission gear 81.

[0069] In order to prevent the second cooling water delivery pipe 7 from shaking during the rotation of the first cooling water delivery pipe 4, the inventor, in the present embodiment, further, a limiting plate 34 is fixedly installed on the supporting plate 3, a limiting groove is provided on the top of the limiting plate 34, and the second cooling water delivery pipe 7 is engaged and clamped in the inside of the limiting groove.

[0070] In summary, the workflow of the utility model is:

[0071] The support component is used to fix the spray component on the top of the LNG gas storage tank to ensure the stability of the spray component in spraying and cooling the LNG gas storage tank. The driving component is used to rotate the multiple spray pipes 6 on the spray component to improve the uniformity of the spray component and increase the cooling effect. More specifically:

[0072] There are four support frames 1, and a bearing plate 3 is installed between the four support frames 1 by bolts 14, so that the installation of the bearing plate 3 is more stable. The first cooling water delivery pipe 4 is installed at the central part of the bearing plate 3. The upper end of the first cooling water delivery pipe 4 can be rotated 360° through a rotating joint 41 to be connected with the second cooling water delivery pipe 7, and the lower end of the first cooling water delivery pipe 4 is connected with a shunt pipe 5. When the LNG gas storage tank 2 is cooled, the cooling water enters the first cooling water delivery pipe 4 and the shunt pipe 5 in turn from the second cooling water delivery pipe 7, and then is transported to multiple spray pipes 6 through the shunt pipe 5 for spraying and cooling. During this period, the driving motor 9 drives the second transmission gear 81 to rotate, and the second transmission gear 81 drives the first transmission gear 8 on the first cooling water delivery pipe 4 to rotate, thereby driving the spray pipe 6 to rotate and spray, thereby improving the uniformity of the spray, and the sprayed cooling water flows evenly from the top of the conical surface to the entire body of the LNG gas storage tank 2, thereby achieving effective cooling of the LNG gas storage tank 2.

[0073] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed cooling water device on the top of an LNG gas storage tank, characterized in that: include: A support component, comprising a plurality of support frames (1), wherein the support frames (1) are mounted on the upper tank wall of the LNG gas storage tank (2), and a bearing plate (3) is detachably mounted on the plurality of support frames (1); A spray component, comprising a first cooling water delivery pipe (4), the first cooling water delivery pipe (4) being mounted on the bearing plate (3) via a first stabilizing member, a second cooling water delivery pipe (7) being rotatably mounted on the upper end of the first cooling water delivery pipe (4) via a rotating joint (41), a flow divider being connected to the lower end of the first cooling water delivery pipe (4), the flow divider being located directly below the bearing plate (3) and directly above the top of the LNG gas storage tank (2), a plurality of spray pipes (6) being mounted on the flow divider, and a plurality of spray holes (61) being provided on the spray pipes (6); Wherein, a driving component for driving the spray pipe (6) to rotate and spray evenly is also installed on the bearing plate (3).

2. The fixed cooling water equipment for the top of an LNG gas storage tank according to claim 1 is characterized by: A screw rod (11) is welded to the upper tank wall of the LNG gas storage tank (2), and the lower end of the support frame (1) is pressed against the screw rod (11) via a nut (12); The upper end of the support frame (1) is provided with a slot (13), the end of the carrier plate (3) can be engaged and engaged in the interior of the slot (13), and the end of the carrier plate (3) is fixedly connected to the upper end of the support frame (1) via a bolt (14).

3. The fixed cooling water equipment for the top of an LNG gas storage tank according to claim 2 is characterized by: The flow dividing member is a flow dividing pipe (5), the lower end of the first cooling water delivery pipe (4) is in communication with the top of the flow dividing pipe (5), and the open end of the spray pipe (6) is in communication with the side wall of the flow dividing pipe (5).

4. The fixed cooling water equipment on the top of an LNG gas storage tank according to claim 3 is characterized by: A threaded hole is provided at the top of the flow distribution pipe (5), a first external thread (42) is provided on the lower end wall of the first cooling water delivery pipe (4), and the first cooling water delivery pipe (4) is threadedly connected to the flow distribution pipe (5); A threaded hole is provided on the side wall of the diverter pipe (5), a second external thread (63) is provided on the pipe wall at the open end of the spray pipe (6), and the spray pipe (6) is threadably connected to the diverter pipe (5).

5. The fixed cooling water equipment on the top of an LNG gas storage tank according to claim 4 is characterized by: The spray hole (61) is located directly below the spray pipe (6) and vertically faces the top of the LNG gas storage tank (2); A spray branch pipe (62) is integrally formed at one end of the spray pipe (6) close to the diversion pipe (5); the spray branch pipe (62) is inclined at 60-80 degrees, and the pipe mouth of the spray branch pipe (62) faces the top center of the LNG gas storage tank (2).

6. The LNG gas storage tank top fixed cooling water equipment according to claim 1 is characterized by: The first stabilizing member is a first bearing (31), the first bearing (31) is fixedly mounted and rotated at the center of the bearing plate (3), and the first cooling water delivery pipe (4) is fixedly mounted and rotated in the inner ring of the first bearing (31).

7. The fixed cooling water equipment for the top of an LNG gas storage tank according to claim 1 is characterized by: The driving component comprises a driving motor (9), a first transmission gear (8) and a second transmission gear (81); A support plate (33) is fixedly mounted on the top of the carrier plate (3), the drive motor (9) is fixedly mounted on the support plate (33), the output shaft of the drive motor (9) is fixedly connected to the top of the second transmission gear (81), and the second transmission gear (81) is mounted on the carrier plate (3) via a second stabilizing member; The first transmission gear (8) is fixedly sleeved on the first cooling water delivery pipe (4), and the first transmission gear (8) is meshed with the second transmission gear (81) for transmission.

8. The fixed cooling water equipment on the top of an LNG gas storage tank according to claim 7 is characterized by: The second stabilizing member comprises a second bearing (32) fixedly mounted on the bearing plate (3), a connecting rod (321) being fixedly connected to the inner ring of the second bearing (32), and an upper end of the connecting rod (321) being fixedly connected to a lower end of the second transmission gear (81).

9. The fixed cooling water equipment for the top of an LNG gas storage tank according to claim 1, characterized in that: A limiting plate (34) is fixedly mounted on the bearing plate (3), a limiting groove is provided on the top of the limiting plate (34), and the second cooling water delivery pipe (7) is engaged and clamped in the interior of the limiting groove.

10. The LNG gas storage tank top fixed cooling water equipment according to claim 1, characterized in that: The spray hole (61) located at the outermost end of the spray pipe (6) is vertically perpendicular to the side wall of the tank body of the LNG gas storage tank (2).

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