Spraying device of liquefied natural gas storage tank

Abstract

The utility model is suitable for the technical field of liquefied natural gas storage tanks, and provides a liquefied natural gas storage tank spraying device which comprises a storage tank body used for storing liquefied natural gas. The spraying pipes are fixedly installed on the storage tank body, a plurality of spraying heads are arranged on the spraying pipes, and the spraying heads are used for spraying water to the outer surface of the storage tank body; the water pump is fixedly installed on one side of the storage tank body, a connecting pipe is fixedly installed at the water outlet end of the water pump, and the connecting pipe communicates with the multiple spraying pipes; the filtering mechanism is arranged at the water inlet end of the water pump. According to the liquefied natural gas storage tank spraying device, spraying cooling operation can be conducted on the storage tank, impurities in spraying water can be well filtered and removed, the situation that the impurities in the water block the spraying pipe and the spraying head is reduced, and therefore the overall failure rate is reduced, and the using stability of the whole spraying device is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of liquefied natural gas storage tank technology, and particularly relates to a spray device for liquefied natural gas storage tanks. Background Technology

[0002] Liquefied natural gas (LNG) storage tanks are specialized products for storing LNG. They are typically made of materials such as 06Ni9DR and undergo flaw detection, hydrostatic and pneumatic pressure tests, on-site inspection by the technical supervision bureau, and are issued with a pressure vessel inspection certificate.

[0003] During the use of liquefied natural gas (LNG) storage tanks, corresponding spraying devices are installed to ensure their safe operation. These spraying devices keep the LNG storage tanks below a safe temperature by spraying water. However, some existing spraying devices often fail to effectively filter impurities in the water, leading to clogging of the spray pipes and nozzles. Once clogging occurs, repairs are troublesome, reducing the overall stability during use. Summary of the Invention

[0004] This invention provides a spray device for liquefied natural gas storage tanks, aiming to solve the problem mentioned in the background art that the spray devices currently used on liquefied natural gas storage tanks cannot effectively filter and remove impurities from the water.

[0005] To solve the above problems, this utility model is implemented as follows: a liquefied natural gas (LNG) storage tank spraying device, comprising: a storage tank body for storing LNG; multiple spray pipes fixedly installed on the storage tank body, each spray pipe having multiple spray heads for spraying water onto the exterior of the storage tank body; a water pump fixedly installed on one side of the storage tank body, with a connecting pipe fixedly installed at the outlet end of the water pump, the connecting pipe being connected to all of the multiple spray pipes; and a filter mechanism installed at the inlet end of the water pump for treating impurities in the water used by the pump, the filter mechanism also having a cleaning mechanism for cleaning the impurities filtered by the filter mechanism.

[0006] Preferably, the filtration mechanism includes: a filter box fixedly installed on one side of the storage tank body, the filter box being connected to the water inlet of the water pump; and a filter plate fixedly installed inside the filter box, the filter plate being used to filter impurities in the water used by the water pump.

[0007] Preferably, the cleaning mechanism includes: two cleaning frames disposed within the filter box, each cleaning frame being equipped with a cleaning brush, the cleaning brush contacting the side walls of the filter plate, the cleaning frames being used to clean impurities filtered from the surface of the filter plate, and each cleaning frame being fixedly mounted with a counterweight; two mounting blocks respectively fixedly mounted on the two cleaning frames; two guide rods fixedly mounted inside the filter box, the two guide rods being slidably connected to the two mounting blocks respectively; two mounting shafts rotatably mounted on the filter box, each mounting shaft being fixedly fitted with a winch, each winch having a pull rope wound around it, the two pull ropes being fixedly connected to the two cleaning frames respectively; and a winding and unwinding mechanism assembled on the filter box and the two mounting shafts, the winding and unwinding mechanism being used to drive the winches to rotate and wind up and unwind the pull ropes.

[0008] Preferably, the take-up and take-down mechanism includes: a motor fixedly installed on one side of the outer wall of the filter box, the output shaft of the motor being fixedly connected to one end of one of the mounting shafts; and two pulleys respectively fixedly sleeved on the two mounting shafts, with belts sleeved on the two pulleys.

[0009] Preferably, the filter box and the two cleaning racks are provided with a rinsing mechanism for rinsing the surface of the filter plate. The rinsing mechanism includes: two flexible hoses disposed in the filter box, the two flexible hoses being respectively connected to the two cleaning racks, the cleaning racks having a through cavity connected to the flexible hoses, and the cleaning racks having multiple water outlets, all of which are connected to the through cavity; and a water inlet pipe fixedly installed on one side of the outer wall of the filter box, the water inlet pipe being connected to the two flexible hoses.

[0010] Preferably, two drain pipes are fixedly installed on the filter box, and the drain pipes are used to discharge the wastewater used to clean the filter plate.

[0011] Preferably, a control valve is provided on both the drain pipe and the water inlet of the water pump, and the control valve is used for control operation.

[0012] Compared with related technologies, the liquefied natural gas storage tank spraying device provided by this utility model has the following beneficial effects:

[0013] Compared with existing technologies, the liquefied natural gas storage tank spraying device provided in this solution can perform spraying and cooling operations on the storage tank body, and can effectively filter and remove impurities in the spraying water, reducing the possibility of impurities clogging the spray pipes and spray heads, thereby reducing the overall failure rate and ensuring the stability of the entire spraying device. Attached Figure Description

[0014] Figure 1 This is a front view structural schematic diagram of a spray device for a liquefied natural gas storage tank provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0017] Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure;

[0018] Figure 5 for Figure 2 An enlarged structural diagram of section C shown in the figure;

[0019] Figure 6 for Figure 1 An enlarged structural diagram of part D shown in the figure;

[0020] Figure 7 This is a three-dimensional structural diagram of the filter plate in this utility model.

[0021] Reference numerals in the attached drawings: 1. Tank body; 2. Spray pipe; 3. Spray head; 4. Water pump; 5. Connecting pipe; 6. Filter box; 7. Filter plate; 8. Cleaning frame; 9. Mounting block; 10. Guide rod; 11. Mounting shaft; 12. Winch; 13. Pull rope; 14. Motor; 15. Pulley; 16. Belt; 17. Counterweight; 18. Hose; 19. Water inlet pipe; 20. Drain pipe. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] This utility model provides a spraying device for liquefied natural gas storage tanks, such as... Figure 1-7 As shown, the liquefied natural gas (LNG) storage tank spraying device includes: a storage tank body 1, which stores LNG; multiple spray pipes 2 fixedly installed on the storage tank body 1, each spray pipe 2 having multiple spray heads 3 for spraying water onto the exterior of the storage tank body 1; a water pump 4 fixedly installed on one side of the storage tank body 1, with a connecting pipe 5 fixedly installed at the outlet end of the water pump 4, the connecting pipe 5 being connected to the multiple spray pipes 2; and a filter mechanism installed at the inlet end of the water pump 4, which treats impurities in the water used by the water pump 4, and the filter mechanism is equipped with a cleaning mechanism for cleaning the impurities filtered by the filter mechanism.

[0025] In this embodiment, when spraying water to cool the storage tank body 1, the inlet of the water pump 4 is connected to the corresponding water source pipe. The water pump 4 is started, and the water is filtered and impurities are removed through the filtration mechanism, reducing the possibility of impurities in the water clogging the spray pipes 2 and spray heads 3, thus ensuring the stability of the entire spraying device. The filtered water enters the connecting pipe 5 and is then sprayed onto the outer surface of the storage tank body 1 through the spray heads 3 on the multiple spray pipes 2. The cooling water slowly flows down from the top outer wall of the storage tank body 1, thereby cooling the storage tank body 1 and ensuring the safety of the storage tank body 1. Through the entire spraying device, the storage tank body 1 can be sprayed and cooled, and impurities in the spray water can be effectively filtered and removed, reducing the possibility of impurities in the water clogging the spray pipes 2 and spray heads 3, thereby reducing the overall failure rate and ensuring the stability of the entire spraying device.

[0026] In a further preferred embodiment of the present invention, the filtration mechanism includes: a filter box 6 fixedly installed on one side of the storage tank body 1, the filter box 6 being connected to the water inlet of the water pump 4; and a filter plate 7 fixedly installed inside the filter box 6, the filter plate 7 being used to filter impurities in the water used by the water pump 4.

[0027] In this embodiment, when the water pump 4 is in use, the spray water enters the filter box 6. Under the action of the filter plate 7, impurities in the spray water can be filtered and removed, reducing the possibility of impurities in the water clogging the spray pipe 2 and the spray head 3, and ensuring the stability of the entire spray device.

[0028] In a further preferred embodiment of this utility model, the cleaning mechanism includes: two cleaning frames 8 disposed within the filter box 6, each of the two cleaning frames 8 being provided with a cleaning brush, the cleaning brush contacting the side walls of the filter plate 7, the cleaning frames 8 being used to clean impurities filtered from the surface of the filter plate 7, and each of the two cleaning frames 8 being fixedly mounted with a counterweight 17; two mounting blocks 9 respectively fixedly mounted on the two cleaning frames 8; two guide rods 10 fixedly mounted inside the filter box 6, the two guide rods 10 being slidably connected to the two mounting blocks 9 respectively; two mounting shafts 11 rotatably mounted on the filter box 6, each of the two mounting shafts 11 being fixedly fitted with a winch 12, each of the two winches 12 being wound with a pull rope 13, the two pull ropes 13 being fixedly connected to the two cleaning frames 8 respectively; and a winding and unwinding mechanism assembled on the filter box 6 and the two mounting shafts 11, the winding and unwinding mechanism being used to drive the winch 12 to rotate and wind and unwind the pull rope 13.

[0029] In this embodiment, when the filter plate 7 needs to be cleaned after a certain period of use, the storage mechanism is activated to simultaneously wind up the two pull ropes 13, thereby driving the two cleaning frames 8 to clean the two surfaces of the filter plate 7 along the two guide rods 10. When the cleaning frame 8 is moved to the rightmost side of the filter plate 7, the unwinding mechanism is activated to unwind the pull ropes 13. Under the action of the counterweight 17, the two cleaning frames 8 slide to the left side of the filter plate 7. This process is repeated, so that the two cleaning frames 8 can clean the impurities filtered in the spray water on both sides of the filter plate 7 back and forth, avoiding clogging of the filter plate 7 and improving the filtration and impurity removal effect of the filter plate 7 on the spray water.

[0030] In a further preferred embodiment of the present invention, the take-up and release mechanism includes: a motor 14 fixedly installed on the outer wall of one side of the filter box 6, the output shaft of the motor 14 being fixedly connected to one end of one of the mounting shafts 11; two pulleys 15 respectively fixedly sleeved on the two mounting shafts 11, and belts 16 sleeved on the two pulleys 15.

[0031] In this embodiment, when using the winding and unwinding mechanism, the starting motor 14 drives a mounting shaft 11 to rotate in both directions. The rotation stroke can be set by the motor 14, which is existing technology and will not be described in detail here. Under the interaction of the pulley 15 and the belt 16, the two mounting shafts 11 can be driven to rotate, thereby driving the two winches 12 to wind or unwind the two pull ropes 13 respectively. This can drive the two cleaning frames 8 to clean the impurities filtered in the spray water on both sides of the filter plate 7, avoiding the filter plate 7 from becoming clogged and improving the filter plate 7's effect on filtering and removing impurities from the spray water.

[0032] In a further preferred embodiment of this utility model, a rinsing mechanism is provided on the filter box 6 and the two cleaning racks 8. The rinsing mechanism is used to rinse the surface of the filter plate 7. The rinsing mechanism includes: two hoses 18 disposed in the filter box 6, the two hoses 18 being respectively connected to the two cleaning racks 8, the cleaning racks 8 having a through cavity, the through cavity being connected to the hoses 18, and the cleaning racks 8 having multiple water outlets, the multiple water outlets being connected to the through cavity; and a water inlet pipe 19 fixedly installed on one side of the outer wall of the filter box 6, the water inlet pipe 19 being connected to the two hoses 18.

[0033] In this embodiment, when the two cleaning racks 8 clean the impurities filtered on both sides of the filter plate 7 back and forth, the water inlet pipe 19 is connected to the corresponding pressurized water source pump pipe. Water enters the two hoses 18 through the water inlet pipe 19, and then is sprayed onto the upper and lower surfaces of the filter plate 7 through the through cavity and water outlet on the cleaning rack 8, thereby rinsing the surface of the filter plate 7 and improving the cleaning effect of the filter plate 7.

[0034] In a further preferred embodiment of this utility model, two drain pipes 20 are fixedly installed on the filter box 6, and the drain pipes 20 are used to discharge the wastewater used for cleaning the filter plate 7.

[0035] In this embodiment, when cleaning and rinsing the filter plate 7, two drain pipes 20 are opened to facilitate the discharge of wastewater used for cleaning the filter plate 7.

[0036] In a further preferred embodiment of this utility model, a control valve is provided on both the drain pipe 20 and the water inlet end of the water pump 4, and the control valve is used for control operation.

[0037] In this embodiment, the control valve facilitates the control of the drain pipe 20 and the water inlet of the water pump 4. When cleaning and rinsing the filter plate 7, the control valve of the drain pipe 20 needs to be opened and the control valve on the water inlet of the water pump 4 needs to be closed.

[0038] In summary, compared with related technologies, the entire spraying device can perform spray cooling on the storage tank body 1, and can effectively filter and remove impurities in the spray water, reducing the likelihood of impurities clogging the spray pipes 2 and spray heads 3, thereby reducing the overall failure rate and ensuring the stability of the entire spraying device.

[0039] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A spraying device for a liquefied natural gas storage tank, characterized in that, include: The storage tank body stores liquefied natural gas; Multiple spray pipes are fixedly installed on the tank body, and multiple spray heads are provided on the spray pipes. The spray heads are used to spray water onto the exterior of the tank body. A water pump is fixedly installed on one side of the storage tank body, and a connecting pipe is fixedly installed on the water outlet end of the water pump. The connecting pipe is connected to multiple spray pipes. A filter mechanism is installed on the water inlet of the water pump. The filter mechanism is used to treat impurities in the water used by the water pump. The filter mechanism is also equipped with a cleaning mechanism for cleaning the impurities filtered by the filter mechanism.

2. The liquefied natural gas storage tank spraying device as described in claim 1, characterized in that, The filtration mechanism includes: A filter box is fixedly installed on one side of the storage tank body, and the filter box is connected to the water inlet of the water pump; A filter plate is fixedly installed inside the filter box, and the filter plate is used to filter impurities in the water used by the water pump.

3. The liquefied natural gas storage tank spraying device as described in claim 2, characterized in that, The cleaning mechanism includes: Two cleaning racks are installed inside the filter box. Each cleaning rack is equipped with a cleaning brush. The cleaning brushes are in contact with the side walls of the filter plate. The cleaning racks are used to clean the impurities filtered on the surface of the filter plate. Each cleaning rack is also fixedly equipped with a counterweight. Two mounting blocks are respectively fixedly installed on the two cleaning racks; Two guide rods are fixedly installed inside the filter box, and the two guide rods are slidably connected to the two mounting blocks respectively; Two mounting shafts mounted on the filter box are rotated, and each of the two mounting shafts is fixedly fitted with a winch. Each of the two winches is wound with a pull rope, and the two pull ropes are respectively fixedly connected to the two cleaning frames. A winding and unwinding mechanism is mounted on the filter box and the two mounting shafts. The winding and unwinding mechanism is used to drive the winch to rotate and wind up and unwind the pull rope.

4. The liquefied natural gas storage tank spraying device as described in claim 3, characterized in that, The launching and retracting mechanism includes: A motor is fixedly installed on one side of the outer wall of the filter box, and the output shaft of the motor is fixedly connected to one end of one of the mounting shafts; Two pulleys are respectively fixedly sleeved on the two mounting shafts, and belts are sleeved on the two pulleys.

5. The liquefied natural gas storage tank spraying device as described in claim 3, characterized in that, The filter box and the two cleaning racks are equipped with a rinsing mechanism, which is used to rinse the surface of the filter plate. The rinsing mechanism includes: Two hoses are installed inside the filter box, and the two hoses are respectively connected to the two cleaning racks. The cleaning racks have through cavities that are connected to the hoses. The cleaning racks also have multiple water outlets that are connected to the through cavities. A water inlet pipe is fixedly installed on one side of the outer wall of the filter box, and the water inlet pipe is connected to the two hoses.

6. The liquefied natural gas storage tank spraying device as described in claim 2, characterized in that, Two drain pipes are fixedly installed on the filter box, and the drain pipes are used to discharge the wastewater used to clean the filter plate.

7. The liquefied natural gas storage tank spraying device as described in claim 6, characterized in that, Both the drain pipe and the water pump inlet are equipped with control valves, which are used for control operations.

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