LNG (Liquefied Natural Gas) gasification equipment
By using heating and stirring components in LNG gasification equipment to generate salt solutions and quantitatively add salt to the water replenishing parts, the problems of low gasification efficiency and water freezing of existing equipment under low temperature conditions are solved, and the gasifier is improved heat exchange performance.
Patent Information
- Application Number
- CN202421109665.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the external temperature of the existing LNG gasification equipment is low, the heat exchange efficiency of the gasifier is reduced, and the water heat exchange efficiency of the spray gasifier is average, which is prone to water freezing, affecting the gasification of liquid LNG.
A LNG gasification equipment is designed, including spraying components, water storage components and water replenishing components. By setting heating rods and stirring components in the water storage components, a salt solution is generated, the freezing point of spraying water is reduced, and the water replenishing components are added. The salt solution is generated using quantitative salt-added parts to improve the heat exchange efficiency between the water and the gasifier surface.
It improves the gasification efficiency of LNG gasification equipment under low temperature conditions, reduces the possibility of spray water freezing, and enhances the heat exchange performance of the gasifier.
Smart Images
Figure CN222278223U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas equipment, and in particular relates to LNG gasification equipment. Background Art
[0002] With the rapid development of the world's natural gas industry, liquefied natural gas has gradually become an important part of the future international energy industry. Natural gas equipment includes LNG unloading skids, vaporizers, and system pressure regulation, metering, and odorization equipment. The main process is that LNG tank trucks transport liquefied natural gas, pressurize the LNG tank trucks through the unloading platform supercharger, use the pressure difference to send liquid LNG into the storage tank, and pressurize the storage tank through the self-pressurization of the storage tank. After that, the liquid LNG enters the vaporizer and absorbs heat in the vaporizer to vaporize and undergo a phase change to become a gas. The temperature is increased at the heating end of the vaporizer, and the gasified LNG enters the external transmission pipeline after filtration, pressure regulation, metering, and odorization. The gasification process has the advantages of unattended, safe and reliable. LNG is widely used in residential areas, commercial catering users, hospitals, warehouses, docks, LNG filling stations, industrial parks and other areas
[0003] Among them, most LNG vaporizers are room temperature vaporizers. Room temperature vaporizers are heat exchange equipment that uses natural convection of air to heat low-temperature LNG to vaporize it into room temperature gas. However, the disadvantage of room temperature vaporizers is that when the outside temperature is low, the heat exchange efficiency of the vaporizer will decrease, which is not conducive to the vaporization of LNG. The general temperature of liquid LNG is -162 degrees, and it needs to be vaporized to 23 degrees to meet the standard. Therefore, when the outside temperature is low, the vaporizer needs to be auxiliary heated to improve the conversion efficiency; and some existing spray-type vaporizers use heated water to exchange heat with the vaporizer, and the freezing point of water is 0 degrees, so its heat exchange efficiency is also relatively general. It is also easy for water to freeze on the surface of the vaporizer after heat exchange, which is not conducive to the vaporization of liquid LNG. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an LNG gasification equipment.
[0005] The utility model provides the following technical solutions:
[0006] An LNG gasification device comprises a base, on which a vaporizer body is arranged, a spray assembly is arranged directly above the vaporizer body, and a water collecting tank for collecting water sprayed by the spray assembly is arranged at the upper end of the base in the circumferential direction of the vaporizer body, a water storage component for recycling water in the water collecting tank and supplying water to the spray assembly, and a water replenishment component for replenishing water to the water storage component are also arranged at the upper end of the base, and a quantitative salt adding component for adding salt to the inside of the water replenishment component is arranged at the upper end of the water replenishment component.
[0007] Preferably, the spray assembly comprises a spray chamber, which is in the shape of a hollow rectangular parallelepiped, and a plurality of spray heads are arranged on the lower end surface of the spray chamber, and the plurality of spray heads are evenly arranged at equal intervals in a rectangular array.
[0008] Preferably, the water storage component includes a water tank, on which is provided a first water pump for extracting water from the water collection tank and a second water pump for supplying water to the spray chamber, and a heating rod is also provided on the inner wall of the water tank along its height direction.
[0009] Preferably, a first stirring component is also provided inside the water tank, and the first stirring component includes a first stirring shaft, and the first stirring shaft is coaxially arranged inside the water tank in a vertical direction, and the upper and lower ends of the first stirring shaft are respectively connected to the upper and lower end surfaces of the water tank through first bearings, and a plurality of first stirring rods are provided on the first stirring shaft along its axial direction, and a first motor for rotating the first stirring shaft is provided on the upper end surface of the water tank.
[0010] Preferably, a water level sensor for monitoring the water level inside the water tank and a temperature sensor for monitoring the water temperature inside the water tank are also provided at the bottom of the water tank.
[0011] Preferably, the water replenishing component includes a water replenishing tank, on which a third water pump for supplying water to the water storage tank and a fourth water pump for adding water to the water replenishing tank are provided, a second heating rod is also provided on the inner wall of the water replenishing tank along its height direction, a stirring assembly is also provided inside the water replenishing tank, a salt adding port is also provided on the upper end surface of the water replenishing tank, and the output end of the quantitative salt adding component is connected to the salt adding port.
[0012] Preferably, the stirring assembly includes a second stirring shaft, which is coaxially arranged in a vertical direction inside the water replenishing tank, and the upper and lower ends of the second stirring shaft are respectively connected to the upper and lower end surfaces of the water replenishing tank through second bearings, and a plurality of second stirring rods are arranged on the second stirring shaft along its axial direction, and the upper end surface of the water replenishing tank is provided with a second motor for rotating the second stirring shaft.
[0013] Preferably, a second water level sensor for monitoring the water level inside the water replenishment tank and a temperature sensor for monitoring the water temperature inside the water replenishment tank are also provided at the bottom of the water replenishment tank.
[0014] Preferably, the quantitative salt adding component comprises a salt storage box, a salt outlet pipe is provided at the lower end of the salt storage box, the upper end of the salt outlet pipe is connected to the salt storage box through the quantitative salt adding assembly, and the lower end of the salt outlet pipe is connected to the salt adding port.
[0015] Preferably, the quantitative salt addition component includes a cylindrical discharge barrel, the axis of the cylindrical discharge barrel is horizontally arranged in the front-to-back direction, the middle part of the upper end of the cylindrical discharge barrel is connected with the lower end of the salt storage box through the second salt inlet, the upper end of the salt outlet pipe is connected with the middle part of the lower end of the cylindrical discharge barrel, and the second salt inlet is located directly above the salt outlet pipe.
[0016] Preferably, a cylindrical quantitative column is coaxially arranged inside the cylindrical discharging barrel, a quantitative groove is arranged in the middle of the outer side surface of the cylindrical quantitative column at the second salt inlet, a rotating shaft is also coaxially arranged on the cylindrical quantitative column, both ends of the rotating shaft are respectively connected to the front and rear side surfaces of the cylindrical discharging barrel through bearings, and a third motor for rotating the rotating shaft is also arranged on the rear side surface of the cylindrical discharging barrel.
[0017] Preferably, the outer diameter of the cylindrical quantitative column is the same as the inner diameter of the cylindrical discharge barrel, and the second salt inlet, the salt outlet pipe and the notch of the quantitative groove are all circular.
[0018] Preferably, a plurality of the quantitative grooves are provided, and the plurality of the quantitative grooves are evenly arranged at equal intervals along the circumference of the cylindrical quantitative column.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The utility model discloses an LNG gasification device. A water replenishing component is provided for quantitatively replenishing water into a water storage tank, and a quantitative salt adding component is provided on the water replenishing component for adding salt into the water replenishing component, so that the water inside the water replenishing tank generates a salt solution, the freezing point of the spray water is reduced, the water can better exchange heat with the surface of the vaporizer, and the possibility of the spray water freezing on the surface of the vaporizer is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a structural schematic diagram of the utility model.
[0023] Figure 2 This is a schematic structural diagram of the water storage component of the utility model.
[0024] Figure 3 It is a schematic diagram of the structure of the water replenishment component of the utility model.
[0025] Figure 4 It is a schematic diagram of the structure of the quantitative salt adding component of the utility model. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0028] See also Figure 1-4 As shown, an LNG gasification device includes a base 1, on which a vaporizer body 2 is arranged, and a spray assembly 3 is arranged directly above the vaporizer body 2. The upper end of the base 1 is located in the circumference of the vaporizer body 2 and is provided with a water collection tank 4 for collecting the spray water of the spray assembly 3. The upper end of the base 1 is also provided with a water storage component 5 for recycling the water in the water collection tank 4 and supplying water to the spray assembly 3, and a water replenishment component 6 for replenishing water to the water storage component 5. The upper end of the water replenishment component 6 is provided with a quantitative salt adding component 7 for adding salt to the inside of the water replenishment component. By providing a water replenishment component for quantitatively replenishing water to the inside of the water storage tank, and providing a quantitative salt adding component for adding salt to the inside of the water replenishment component on the water replenishment component, the water inside the water replenishment tank generates a salt solution, the freezing point of the spray water is reduced, so that it can better exchange heat with the surface of the vaporizer, and the possibility of the spray water freezing on the surface of the vaporizer is also reduced.
[0029] The pipeline surface of the gasifier body 2 is provided with a zinc alloy coating to prevent corrosion of the surface caused by the salt solution.
[0030] Preferably, the spray assembly 3 comprises a spray chamber, which is in the shape of a hollow rectangular parallelepiped, and a plurality of spray heads are arranged on the lower end surface of the spray chamber, and the plurality of spray heads are evenly arranged at equal intervals in a rectangular array.
[0031] The water storage component 5 includes a water tank 51, on which a first water pump 8 for extracting water from the water collection tank 4 and a second water pump 9 for supplying water to the spray chamber are provided. A heating rod 52 is also provided on the inner wall of the water storage tank 51 along its height direction. The input end of the first water pump 8 is connected to the lower end of the water collection tank 4 through a first water pipe, and the output end of the first water pump 8 is connected to the inside of the water storage tank 51 through a second water pipe. The input end of the second water pump 9 is connected to the lower end of the water storage tank 51 through a third water pipe, and the output end of the second water pump 9 is connected to the inside of the spray chamber through a fourth water pipe. The heating rod 52 is used to heat the salt solution inside the water storage tank 51 so that the salt is fully dissolved in the water.
[0032] A first stirring assembly is also provided inside the water tank 51, and the first stirring assembly includes a first stirring shaft 53, which is coaxially provided inside the water tank 51 in a vertical direction, and the upper and lower ends of the first stirring shaft 53 are respectively connected to the upper and lower end surfaces of the water tank 51 through first bearings, and a plurality of first stirring rods 54 are provided on the first stirring shaft 53 along its axial direction, and a first motor 55 for rotating the first stirring shaft is provided on the upper end surface of the water tank 51. The first stirring assembly can heat the salt solution inside the water tank 51 evenly.
[0033] The bottom of the water tank 51 is also provided with a water level sensor 56 for monitoring the water level inside the water tank 51 and a temperature sensor 57 for monitoring the water temperature inside the water tank 51. When the water level detected by the water level sensor 56 is lower than a preset threshold, the third water pump 10 works to replenish a certain amount of water into the water tank.
[0034] The water replenishment component 6 includes a water replenishment tank 61, on which a third water pump 10 for supplying water to the water storage tank 51 and a fourth water pump 11 for adding water to the water replenishment tank 61 are provided. A second heating rod 62 is also provided on the inner wall of the water replenishment tank 61 along its height direction. A stirring assembly is also provided inside the water replenishment tank 61. A salt adding port 68 is also provided on the upper end surface of the water replenishment tank 61, and the output end of the quantitative salt adding component 7 is connected to the salt adding port 68. The input end of the third water pump 10 is connected to the lower end of the interior of the water replenishment tank 61 through the fifth water pipe, and the output end of the third water pump is connected to the interior of the water storage tank through the sixth water pipe. The second heating rod 62 heats the water inside the water replenishment tank to facilitate the dissolution of the salt.
[0035] The stirring assembly includes a second stirring shaft 63, which is coaxially arranged in the vertical direction inside the water replenishment tank 61. The upper and lower ends of the second stirring shaft are respectively connected to the upper and lower end surfaces of the water replenishment tank 61 through second bearings. The second stirring shaft is provided with a plurality of second stirring rods 64 along its axial direction. The upper end surface of the water replenishment tank 61 is provided with a second motor 65 for rotating the second stirring shaft. The arrangement of the stirring assembly further facilitates the dissolution of salt and can also make the salt solution heated evenly.
[0036] The bottom of the water replenishment tank 61 is also provided with a second water level sensor 66 for monitoring the water level inside the water replenishment tank 61 and a temperature sensor 67 for monitoring the water temperature inside the water replenishment tank 61. Each addition of water to the water replenishment tank 61 is quantitative, which is detected by the second water level sensor 66. Each time water is replenished, a quantitative amount of salt solution is transported to the inside of the water storage tank.
[0037] The quantitative salt adding component 7 includes a salt storage box 71 , a salt outlet pipe 72 is provided at the lower end of the salt storage box 71 , the upper end of the salt outlet pipe 72 is connected to the salt storage box 71 through the quantitative salt adding component, and the lower end of the salt outlet pipe 72 is connected to the salt adding port 68 .
[0038] The quantitative salt addition component includes a cylindrical discharge barrel 74, the axis of which is horizontally arranged in the front-to-back direction, the middle of the upper end of the cylindrical discharge barrel is connected to the lower end of the salt storage box 71 through a second salt inlet, the upper end of the salt outlet pipe 72 is connected to the middle of the lower end of the cylindrical discharge barrel, and the second salt inlet is located directly above the salt outlet pipe 72.
[0039] A cylindrical quantitative column 76 is coaxially arranged inside the cylindrical discharging barrel, a quantitative groove 78 is arranged in the middle of the outer side surface of the cylindrical quantitative column at the second salt inlet, and a rotating shaft is also coaxially arranged on the cylindrical quantitative column, and both ends of the rotating shaft are respectively connected to the front and rear side surfaces of the cylindrical discharging barrel through bearings, and a third motor for rotating the rotating shaft is also arranged on the rear side surface of the cylindrical discharging barrel.
[0040] The outer diameter of the cylindrical quantitative column is the same as the inner diameter of the cylindrical discharge barrel, and the second salt inlet, the salt outlet pipe 72 and the notch of the quantitative groove are all circular.
[0041] When the water replenishment tank is quantitatively added with water, the cylindrical quantitative column is driven to rotate through the rotation of the third motor. When the quantitative groove rotates to the second salt inlet, the salt at the bottom of the salt storage box 71 will enter the quantitative groove and fill it up. Through the continued rotation of the third motor, the quantitative groove carries the quantitative salt and rotates on the inner wall of the cylindrical discharge barrel. When the quantitative groove rotates to the salt outlet pipe 72, the salt in the quantitative groove will be discharged through the salt outlet pipe 72 and fall into the water replenishment tank through the salt inlet 68.
[0042] The quantitative grooves 78 are provided in plurality, and the plurality of quantitative grooves are evenly spaced and arranged along the circumference of the cylindrical quantitative column 76. The capacity of the quantitative groove is the same as the amount of salt required for each water replenishment. The amount of water replenishment is the same, and the amount of salt required for each time is also the same, so that the water forms a salt solution, lowers its freezing point, and enables it to better exchange heat with the surface of the gasifier.
[0043] An electromagnetic vibrator 73 is also provided on the outer side wall of the salt storage box 71 .
[0044] The above is only a preferred implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An LNG gasification device, comprising a base (1), on which a gasifier body (2) is arranged, characterized in that: A spray assembly (3) is arranged directly above the vaporizer body (2); a water collecting tank (4) for collecting spray water of the spray assembly (3) is arranged at the upper end of the base (1) in the circumferential direction of the vaporizer body (2); a water storage component (5) for recycling water in the water collecting tank (4) and supplying water to the spray assembly (3) and a water replenishing component (6) for replenishing water to the water storage component (5) are also arranged at the upper end of the base (1); and a quantitative salt adding component (7) for adding salt to the inside of the water replenishing component is arranged at the upper end of the water replenishing component (6).
2. The LNG gasification equipment according to claim 1, characterized in that: The spray assembly (3) comprises a spray chamber, which is in the shape of a hollow rectangular parallelepiped. A plurality of spray heads are arranged on the lower end surface of the spray chamber, and the plurality of spray heads are evenly arranged at equal intervals in a rectangular array.
3. The LNG gasification equipment according to claim 2, characterized in that: The water storage component (5) comprises a water storage tank (51), on which a first water pump (8) for extracting water from the water collecting tank (4) and a second water pump (9) for supplying water to the spray chamber are arranged, and a heating rod (52) is also arranged on the inner wall of the water storage tank (51) along its height direction.
4. The LNG gasification equipment according to claim 3, characterized in that: The water replenishment component (6) comprises a water replenishment tank (61), on which a third water pump (10) for supplying water to the water storage tank (51) and a fourth water pump (11) for adding water to the water replenishment tank (61) are arranged, and a second heating rod (62) is also arranged on the inner wall of the water replenishment tank (61) along its height direction, and a stirring assembly is also arranged inside the water replenishment tank (61). A salt adding port (68) is also arranged on the upper end surface of the water replenishment tank (61), and the output end of the quantitative salt adding component (7) is connected to the salt adding port (68).
5. The LNG gasification equipment according to claim 4, characterized in that: The quantitative salt adding component (7) comprises a salt storage box (71), a salt outlet pipe (72) is provided at the lower end of the salt storage box (71), the upper end of the salt outlet pipe (72) is connected to the salt storage box (71) via a quantitative salt adding component, and the lower end of the salt outlet pipe (72) is connected to the salt adding port (68).
6. The LNG gasification equipment according to claim 5, characterized in that: The quantitative salt addition assembly comprises a cylindrical discharge barrel (74), the axis of the cylindrical discharge barrel being arranged horizontally in the front-to-back direction, the middle portion of the upper end of the cylindrical discharge barrel being connected to the lower end of the salt storage box (71) via a second salt inlet, the upper end of the salt outlet pipe (72) being connected to the middle portion of the lower end of the cylindrical discharge barrel, and the second salt inlet being located directly above the salt outlet pipe (72).
7. The LNG gasification equipment according to claim 6, characterized in that: A cylindrical quantitative column (76) is coaxially arranged inside the cylindrical discharge barrel, a quantitative groove (78) is arranged in the middle of the outer side surface of the cylindrical quantitative column at the second salt inlet, and a rotating shaft is coaxially arranged on the cylindrical quantitative column, and both ends of the rotating shaft are respectively connected to the front and rear side surfaces of the cylindrical discharge barrel through bearings, and a third motor for rotating the rotating shaft is also arranged on the rear side surface of the cylindrical discharge barrel.