A dual-fuel marine LNG gas supply system vaporizer
By introducing a hollow tube and a swaying mechanism into the vaporizer to expand the spray range, and by setting a filter screen and a guide cone in the circulation pipe, the problem of fixed spray head installation position is solved, the cooling effect is improved and blockage is prevented, and efficient cooling water circulation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PENGLAI ZHONGBAI JINGLU SHIPBUILDING CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-29
AI Technical Summary
In the existing technology, the spray head is located above the gasification pipe, the installation position is fixed, the spraying range is limited, there are spray dead zones, which affects the cooling effect, and the cooling water is prone to clogging the spray head during circulation.
A combined structure including a hollow tube, a swaying mechanism, a circulating pump, and a transition pipe was designed. The hollow tube expands the spraying range by oscillating periodically through the swaying mechanism, and a filter screen and a guide cone are installed in the circulating pipe to ensure that impurities fall outside the guide nozzle when the circulating water stops flowing, thus avoiding backflow.
It effectively expands the spraying range, improves the cooling effect of the vaporization pipe, prevents the spray head from clogging, and ensures the continuous flow of cooling water.
Smart Images
Figure CN224301824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vaporizer technology, specifically to a vaporizer for a dual-fuel ship LNG supply system. Background Technology
[0002] Utility model patent CN214467838U discloses a vaporizer for a dual-fuel ship LNG supply system, including support legs and a frame mounted on the support legs. Support columns are connected between the four corners of the upper and lower frames. Vaporization pipes are arranged side by side within the vaporization space. Fins are provided on the outer surface of the vaporization pipes. A base plate is welded to the lower surface of the support legs, and baffles are welded around the base plate, forming a receiving cavity between the base plate and the surrounding baffles. Circular slots corresponding to the inlet and outlet of the vaporization pipes are opened on both the left and right side baffles. A conveying pipe is fixedly connected to the outside of the circular slots via flanges. A heating device is installed on the conveying pipe, and a cooling device is installed on the vaporization pipe. A sliding door is provided on the front baffle. The system is equipped with a receiving cavity and a submersible pump. The design of these devices allows for the multiple use of water resources, preventing excessive water from flowing onto the ground and being wasted. This solves the problem of excessive water waste in existing spray heat exchangers. However, the aforementioned patent has the following shortcomings: the spray head is located above the vaporization pipe, its installation position is relatively fixed, and the spraying range is limited, easily creating spray dead zones, thus affecting the cooling effect of the vaporization pipe. Furthermore, during the circulation of the cooling water, impurities within it can easily clog the spray head. Therefore, improvements are needed. Utility Model Content
[0003] The purpose of this utility model is to provide a vaporizer for a dual-fuel ship LNG gas supply system, which solves the problems in the prior art where the spray head is located above the vaporization pipe, the installation position is relatively fixed, the spray range is limited, and there are easy spray dead corners, thus affecting the cooling effect of the vaporization pipe. At the same time, it solves the problem that impurities inside the cooling water can easily clog the spray head during the circulation process.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a vaporizer for a dual-fuel ship LNG supply system, comprising a housing, a vaporization pipe disposed inside the housing, two support seats fixedly connected to the top of the housing, a hollow pipe mounted between the two support seats via a bearing, a nozzle disposed at the bottom of the hollow pipe, a drive mechanism disposed at the top of the housing, a circulation pump fixedly mounted on the right side of the housing, the input end of the circulation pump connected to the housing, a circulation pipe fixedly connected to the output end of the circulation pump, the circulation pipe connected to the hollow pipe, a transition pipe connected to the body of the circulation pipe, and a filter screen fixedly connected to the inner side of the transition pipe.
[0005] Preferably, the oscillating mechanism includes an incomplete gear ring fixedly connected to the hollow tube. A bracket is fixedly connected to the top of the outer shell, and an electric push rod is fixedly mounted on the vertical part of the bracket. The telescopic shaft of the electric push rod passes through the bracket and is slidably connected to the bracket. A rack is fixedly connected to the end of the telescopic shaft, and the rack meshes with the incomplete gear ring. The oscillating mechanism facilitates the periodic oscillation of the hollow tube, thereby expanding the water spray range and improving the cooling effect on the vaporization tube.
[0006] Preferably, a guide block is fixedly connected to the upper end of the rack, and the guide block passes through the bracket and is slidably connected to the bracket. The guide block guides the pushing, pulling, and lateral movement of the rack.
[0007] Preferably, a sealing ring is fixedly connected to the end of the circulation pipe, and the sealing ring is slidably connected inside the hollow pipe. The sealing ring increases the airtightness between the circulation pipe and the hollow pipe.
[0008] Preferably, a temperature sensor and a controller are fixedly installed on the inner wall of the housing, and the temperature sensor and the controller are electrically connected. The controller is also electrically connected to the circulating pump. The starting and stopping of the circulating pump can be controlled by the temperature sensor and the controller.
[0009] Preferably, a fixing rod is fixedly connected to the inner wall of the transition pipe, and a guide cone is fixedly connected to the end of the fixing rod. The guide cone contacts the filter screen, and a guide nozzle is fixedly connected to the bottom inner side of the transition pipe. The bottom of the guide cone is located inside the narrow opening of the guide nozzle. After the circulating water enters the transition pipe, it can flow towards the periphery of the filter screen through the guide nozzle and the guide cone. In this way, when the circulating water stops flowing, the impurities trapped by the filter screen will fall to the periphery of the guide nozzle and are not easily flowed back into the outer shell.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model provides a rotatable hollow tube with a nozzle above the outer shell of the vaporization tube, with a matching drive mechanism next to the hollow tube. A combination of a circulation pump and a circulation pipe is installed on the outer shell, and the circulation pipe can be connected to the hollow tube. A temperature sensor and a controller are also installed. In this way, the cooling water inside the outer shell can be sprayed onto the vaporization tube in a circulating manner, and the spraying range can be expanded by the drive mechanism to improve the cooling effect of the vaporization tube.
[0012] 2. This utility model incorporates a transition pipe on the circulation pipe, with a filter screen installed inside the transition pipe for filtering cooling water. It also includes a combination of a guide cone and a guide nozzle. After the circulating water enters the transition pipe, it flows towards the periphery of the filter screen through the guide nozzle and guide cone. Thus, when the circulating water stops flowing, impurities trapped by the filter screen fall onto the periphery of the guide nozzle, preventing them from flowing back into the outer casing and ensuring the nozzle is not clogged. Attached Figure Description
[0013] Figure 1 This is a perspective view of the overall structure of this utility model;
[0014] Figure 2 For the present utility model Figure 1 A schematic diagram of a partial structure;
[0015] Figure 3 For the present utility model Figure 1 A front sectional view;
[0016] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A;
[0017] Figure 5 For the present utility model Figure 3 Enlarged view of the internal structure of the transition tube.
[0018] In the diagram: 1. Outer shell; 2. Vaporization pipe; 3. Support base; 4. Hollow tube; 5. Drive mechanism; 51. Incomplete gear ring; 52. Bracket; 53. Electric push rod; 54. Rack; 55. Guide block; 6. Circulation pump; 7. Circulation pipe; 8. Transition pipe; 9. Sealing ring; 10. Nozzle; 11. Temperature sensor; 12. Controller; 13. Filter screen; 14. Fixing rod; 15. Guide cone; 16. Guide nozzle. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1 , Figure 3 , Figure 4A vaporizer for a dual-fuel marine LNG supply system includes a housing 1. A vaporization pipe 2 is disposed inside the housing 1. Two support seats 3 are fixedly connected to the top of the housing 1, and a hollow pipe 4 is mounted between the two support seats 3 via a bearing. A nozzle 10 is disposed at the bottom of the hollow pipe 4. A circulation pump 6 is fixedly installed on the right side of the housing 1. The input end of the circulation pump 6 is connected to the housing 1, and the output end of the circulation pump 6 is fixedly connected to a circulation pipe 7, which is connected to the hollow pipe 4. A sealing ring 9 is fixedly connected to the end of the circulation pipe 7 and slidably connected inside the hollow pipe 4. The sealing ring 9 increases the sealing between the circulation pipe 7 and the hollow pipe 4. A transition pipe 8 is connected to the body of the circulation pipe 7. A temperature sensor 11 and a controller 12 are fixedly installed on the inner wall of the housing 1. The temperature sensor 11 and the controller 12 are electrically connected, and the controller 12 is electrically connected to the circulation pump 6. The temperature sensor 11 and the controller 12 can control the start and stop of the circulation pump 6.
[0021] Please see Figure 1 , Figure 2 The top of the outer casing 1 is equipped with a swaying mechanism 5. This mechanism facilitates the periodic oscillation of the hollow tube 4, thereby expanding the water spray range and improving the cooling effect on the vaporization tube 2. The swaying mechanism 5 includes an incomplete gear ring 51 fixedly connected to the hollow tube 4. A bracket 52 is fixedly connected to the top of the outer casing 1. An electric push rod 53 is fixedly mounted on the vertical part of the bracket 52. The telescopic shaft of the electric push rod 53 passes through the bracket 52 and is slidably connected to it. A rack 54 is fixedly connected to the end of the telescopic shaft, and the rack 54 meshes with the incomplete gear ring 51. A guide block 55 is fixedly connected to the upper end of the rack 54, passing through the bracket 52 and slidably connected to it. The guide block 55 guides the pushing, pulling, and lateral movement of the rack 54.
[0022] Please see Figure 3 , Figure 5 A filter screen 13 is fixedly connected to the inner side of the transition pipe 8, and a fixing rod 14 is fixedly connected to the inner wall of the transition pipe 8. A guide cone 15 is fixedly connected to the end of the fixing rod 14, and the guide cone 15 contacts the filter screen 13. A guide nozzle 16 is fixedly connected to the bottom of the inner side of the transition pipe 8. The bottom of the guide cone 15 is located inside the narrow opening of the guide nozzle 16. After the circulating water enters the transition pipe 8, it can flow to the periphery of the filter screen 13 through the guide nozzle 16 and the guide cone 15. In this way, when the circulating water stops flowing, the impurities intercepted by the filter screen 13 will fall to the periphery of the guide nozzle 16 and will not easily flow back into the outer shell 1.
[0023] The specific implementation process of this utility model is as follows: During use, when the temperature of the vaporization pipe 2 rises, the temperature sensor 11 transmits a signal to the controller 12, thereby starting the circulation pump 6. The circulation pump 6 transports the cooling water in the outer shell 1 to the hollow pipe 4 through the circulation pipe 7, and sprays it onto the vaporization pipe 2 from above through the nozzle 10. At the same time, the electric push rod 53 periodically pushes and pulls the rack 54. The rack 54 cooperates with the incomplete gear ring 51, causing the hollow pipe 4 to swing periodically, thereby expanding the spray range and improving the cooling effect of the vaporization pipe 2. In addition, after the circulating water enters the transition pipe 8, it can flow to the periphery of the filter screen 13 after being guided by the guide nozzle 16 and the guide cone 15. In this way, when the circulating water stops flowing, the impurities intercepted by the filter screen 13 will fall to the periphery of the guide nozzle 16 and are not easy to flow back into the outer shell 1, ensuring that the nozzle 10 is not blocked.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A vaporizer for a dual-fuel ship LNG supply system, comprising a housing (1), characterized in that: The outer shell (1) is provided with a gasification pipe (2). Two support seats (3) are fixedly connected to the top of the outer shell (1). A hollow tube (4) is installed between the two support seats (3) through a bearing. A nozzle (10) is provided at the bottom of the hollow tube (4). A drive mechanism (5) is provided at the top of the outer shell (1). A circulation pump (6) is fixedly installed on the right side of the outer shell (1). The input end of the circulation pump (6) is connected to the outer shell (1). A circulation pipe (7) is fixedly connected to the output end of the circulation pump (6). The circulation pipe (7) is connected to the hollow tube (4). A transition pipe (8) is connected to the tube body of the circulation pipe (7). A filter screen (13) is fixedly connected to the inner side of the transition pipe (8).
2. The vaporizer for a dual-fuel ship LNG supply system according to claim 1, characterized in that: The drive mechanism (5) includes an incomplete gear ring (51) fixedly connected to the hollow tube (4). A bracket (52) is fixedly connected to the top of the outer shell (1). An electric push rod (53) is fixedly installed on the vertical part of the bracket (52). The telescopic shaft of the electric push rod (53) passes through the bracket (52) and is slidably connected to the bracket (52). A rack (54) is fixedly connected to the end of the telescopic shaft. The rack (54) meshes with the incomplete gear ring (51).
3. The vaporizer for a dual-fuel ship LNG supply system according to claim 2, characterized in that: The upper end of the rack (54) is fixedly connected to a guide block (55), which passes through the bracket (52) and is slidably connected to the bracket (52).
4. The vaporizer for a dual-fuel ship LNG supply system according to claim 1, characterized in that: The end of the circulation pipe (7) is fixedly connected to a sealing ring (9), and the sealing ring (9) is slidably connected to the inside of the hollow pipe (4).
5. A vaporizer for a dual-fuel ship LNG supply system according to claim 1, characterized in that: A temperature sensor (11) and a controller (12) are fixedly installed on the inner wall of the outer casing (1). The temperature sensor (11) and the controller (12) are electrically connected. The controller (12) is electrically connected to the circulating pump (6).
6. A vaporizer for a dual-fuel ship LNG supply system according to claim 1, characterized in that: A fixing rod (14) is fixedly connected to the inner wall of the transition tube (8), and a guide cone (15) is fixedly connected to the end of the fixing rod (14). The guide cone (15) is in contact with the filter screen (13), and a guide nozzle (16) is fixedly connected to the bottom of the inner side of the transition tube (8).