Liquefied natural gas (LNG) filling ship body protection spraying device

Abstract

The utility model discloses a protection spraying device for an LNG (Liquefied Natural Gas) filling ship body. The protection spraying device comprises a spraying pipeline, a fixing device, an operating rod and a water curtain baffle, wherein the spraying pipeline is directly communicated to a fire hose through a steel pipe; a plurality of spraying holes are formed in the bottom of the spraying pipeline; the fixing device comprises two symmetrical fixing supporting frames, and a plurality of connecting holes are formed in the fixing supporting frames. The two operating rods are fixedly installed on the two end sides of the water curtain baffle correspondingly, adjusting grooves are formed in the transverse sections of the operating rods, fixing bolts penetrate through connecting holes in the front sides of the fixing supporting frames to be fixed to the adjusting grooves, and the operating rods can slide front and back relative to the fixing bolts. A fixed insertion hole is also formed in the corner of the operating rod; the water curtain baffle can receive water sprayed out of the spraying holes and change the outflow direction of the water. When the spraying pipeline is used, the spraying pipeline does not need to be detached and rotated, the deck and the broadside plate can be protected only by operating the water curtain baffle to stretch out during LNG filling, the field workload is reduced, and the spraying pipeline can be used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of ship construction, in particular to a LNG filling hull protection spray device. Background Art

[0002] At present, when dual-fuel ships are refueling with LNG, in order to prevent the hull plate from freezing damage due to the low temperature of LNG leakage during the LNG refueling process, water curtain protection is required, which is usually achieved by connecting fire water. The existing water curtain protection method is to set a rotatable perforated pipeline at the LNG refueling point, and dismantle this pipeline and rotate it to the side of the ship's outer plate that needs protection during LNG refueling, so as to achieve the protection of the ship's plate. However, the protective pipeline is dismantled and rotated before refueling and then installed, which requires at least 2 people to dismantle and rotate this pipeline, which takes a long time and consumes manpower; at the same time, this pipeline is mostly connected by a hose, which is exposed on the open deck for a long time. The hose will age and need to be replaced after long-term use, which adds additional operating procedures. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned existing background technology and to provide a LNG filling ship hull protection spray device.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a LNG filling hull protection spray device, including a spray pipeline, a fixing device and a water curtain baffle, the spray pipeline is directly connected to the fire water pipe through a steel pipe, and the spray pipeline is provided with a plurality of spray holes along its length direction; the fixing device is installed on the hull deck, located below the fire water pipe, and includes two fixed support frames arranged symmetrically with each other, and the fixed support frames are provided with a plurality of connection holes; operating rods are fixedly installed on both ends of the water curtain baffle, the operating rod is L-shaped, and an adjustment groove is provided on its transverse section, and a fixing bolt is fixed through the connection hole located on the front side of the fixed support frame and the corresponding side adjustment groove, and the operating rod can slide forward and backward relative to the fixing bolt; a fixing plug hole is provided at the corner of the operating rod, and the connection hole provided on the rear side of the fixed support frame is provided with a corresponding plug, which can be inserted into the fixing plug hole or the adjustment groove through the connection hole; the water curtain baffle can catch the water sprayed from the spray hole and change its outflow direction.

[0005] Furthermore, the spray pipeline is arranged horizontally, and a plurality of spray holes arranged equidistantly are provided at its lower side, and the angle between the spray direction of the spray hole and the vertical line is 45°.

[0006] Furthermore, the fixed support frame is fixed by multiple angle irons and is in an N shape as a whole. A connecting hole is provided on the front vertical rod wall, and two connecting holes are provided on the rear vertical rod wall, one above and one below.

[0007] Furthermore, when the water curtain baffle is in use, the operating rod is pushed forward, the water curtain baffle extends forward from the side plate, and the pin passes through the upper connecting hole and the fixed socket on the operating rod; when the water curtain baffle is in storage state, the operating rod is pulled backward, the water curtain baffle is retracted backward into the side plate, and the pin passes through the lower connecting hole and the adjustment slot.

[0008] Furthermore, the longitudinal section of the water curtain baffle presents an inclined umbrella structure, which is bent inwardly, so that the water sprayed from the spray hole can be directly directed to the upper folded surface in the use state; and a supporting rib plate is additionally provided on the inner side of the water curtain baffle.

[0009] Furthermore, the setting length of the water curtain baffle is greater than the length of the spray pipeline.

[0010] Furthermore, the length of the adjustment slot on the operating rod is equal to the distance between the front connecting hole and the lower connecting hole on the fixed support frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, the spray pipeline is directly connected with a steel pipe, and there is no need to disassemble the pipeline when in use. The protection of the deck and the side plate during LNG filling can be achieved by operating the water curtain baffle arranged thereon, thereby reducing the workload on site and being able to be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model in use;

[0014] Figure 3 This is a structural perspective view of a water curtain baffle with an operating rod in the utility model;

[0015] Figure 4 This is a front view of the water curtain baffle with an operating rod in the utility model;

[0016] Figure 5 It is a longitudinal cross-sectional schematic diagram of the water curtain baffle in the utility model;

[0017] Figure 6 It is a structural schematic diagram of the fixing device in the utility model;

[0018] In the figure: 1. Spray pipeline, 2. Operating lever, 3. Fixed support frame, 4. Water curtain baffle, 5. Fire water pipe, 6. Deck, 7. Side plate, 8. Water curtain, 11. Spray hole, 21. Adjustment slot, 22. Fixed socket, 31. First connecting hole, 32. Upper connecting hole, 33. Lower connecting hole. DETAILED DESCRIPTION

[0019] In the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various components of the present invention. They do not specifically mean that any component in the present invention must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as a limitation on the present invention.

[0020] In addition, in the utility model, the descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0021] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0023] like Figures 1 to 6As shown, a LNG bunkering hull protection spray device includes a spray pipeline 1, an operating rod 2, a fixing device and a water curtain baffle 4, wherein the spray pipeline 1 is directly fixedly connected to a fire water pipe 5 arranged on the hull through a steel pipe, and is horizontally arranged. The bottom of the spray pipeline 1 is provided with a plurality of spray holes 11 along its length direction, which are equidistant from each other and arranged in a straight line. The fixing device is installed on the hull deck 6, located below the fire water pipe 5, and includes two fixed support frames 3 that are symmetrical and arranged at intervals, and the interval distance between the two is set according to actual needs; the fixed support frame 3 is formed by welding and fixing multiple angle irons to each other, and the overall structure is N-shaped, and its bottom is fixed to a designated position on the hull deck 6 by bolts, close to the side plate 7 of the hull; a first connecting hole 31 is provided on the front vertical rod wall of the fixed support frame 3, and two connecting holes, one above and one below, are provided on the rear vertical rod wall of the fixed support frame 3, which are an upper connecting hole 32 and a lower connecting hole 33, respectively, and an adaptive pin is configured corresponding to the upper connecting hole 32 and the lower connecting hole 33. The operating rods 2 are provided with two, both of which are L-shaped structures, and the ends of their transverse sections are fixedly connected to the two ends of the water curtain baffle 4 respectively, and a transverse long strip adjustment groove 21 is provided on the transverse section of the operating rod 2, and its length is equal to the distance between the first connecting hole 31 and the lower connecting hole 33; the operating rod 2 is connected and installed on the fixed support frame 3 on the corresponding side through the first connecting hole 31 and the front end of the adjustment groove 21 on the corresponding side by a fixing bolt, and the operating rod 2 can slide and retract forward and backward along the length direction of the adjustment groove 21 relative to the fixing bolt; a fixed socket 22 adapted to the pin is also provided at the corner of the operating rod 2, and at the same time, in order to increase the strength of the operating rod 2, a reinforcing rib plate is added on the inner side of the corner.

[0024] The length of the water curtain baffle 4 is slightly longer than the length of the spray pipe 1, and its longitudinal section is an umbrella structure. Figure 5 As shown, the outer baffle is made of sheet metal, and a V-shaped support rib is added inside to improve its strength and prevent shaking, deflection and fracture due to its long length. When LNG is being refueled, the water curtain baffle 4 is adjusted to the use state, such as Figure 2As shown, the water curtain baffle 4 is pushed forward synchronously using the operating rod 2, the adjustment slot 21 slides forward along the fixing bolt, the rear end of the operating rod 2 is lifted upward, and the fixing socket 22 thereon is directly opposite to the upper connecting hole 32, and then the pin is used to pass through the upper connecting hole 32 and the fixing socket 22 in sequence to fix it. At this time, the water curtain baffle 4 is tilted downward and extends to the outside of the side plate 7, and the water in the fire hose 5 is injected into the sprinkler pipe 1 and sprayed downward through the sprinkler hole 11. The direction of the sprayed water flow has an angle of 45° with the vertical line, and it is sprayed directly on the upper folded surface of the water curtain baffle 4. Then the water is sprayed onto the water curtain baffle 4 and flows downward along the inner side of the baffle to form a water curtain 8, thereby realizing the protection of the side plate and deck of the ship. When not in use, first pull out the latch, use the operating rod 2 to pull it backwards synchronously, the adjustment slot 21 slides backwards along the fixing bolt, then press the rear end of the operating rod 2 downward so that the rear end of the adjustment slot 21 on it faces the lower connecting hole 33, and then use the latch to insert the lower connecting hole 33 and the adjustment slot 21 in sequence to fix it. At this time, the water curtain baffle 4 is stored inside the side plate 7 to reduce the occupied space.

[0025] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An LNG bunkering hull protection spray device, characterized in that: It comprises a spray pipeline, a fixing device and a water curtain baffle, the spray pipeline is directly connected to the fire water pipe through a steel pipe, and the spray pipeline is provided with a plurality of spray holes along its length direction; the fixing device is installed on the hull deck, located below the fire water pipe, and comprises two fixed support frames arranged symmetrically with each other, and the fixed support frames are provided with a plurality of connecting holes; operating rods are fixedly installed on both end sides of the water curtain baffle, the operating rod is L-shaped structure, and an adjustment groove is provided on its transverse section, and the fixing bolt is fixed through the connecting hole located on the front side of the fixing support frame and the corresponding side adjustment groove, and the operating rod can slide forward and backward relative to the fixing bolt; a fixing socket is provided at the corner of the operating rod, and the connecting hole provided on the rear side of the fixing support frame is provided with a corresponding pin, which can pass through the connecting hole and be inserted into the fixing socket or the adjustment groove; the water curtain baffle can catch the water sprayed from the spray hole and change its outflow direction.

2. The LNG bunkering hull protection spraying device according to claim 1 is characterized in that: The spray pipeline is arranged horizontally, and a plurality of spray holes arranged equidistantly are arranged obliquely below the spray pipeline, and the angle between the spray direction of the spray hole and the vertical line is 45°.

3. The LNG bunkering hull protection spraying device according to claim 1 is characterized by: The fixed support frame is fixed by multiple angle irons and is in an N shape as a whole. A connecting hole is provided on the front vertical rod wall, and two connecting holes are provided on the rear vertical rod wall, one above and one below.

4. The LNG bunkering hull protection spraying device according to claim 3 is characterized by: When the water curtain baffle is in use, the operating rod is pushed forward, the water curtain baffle extends forward from the side plate, and the pin passes through the upper connecting hole and the fixed socket on the operating rod; when the water curtain baffle is in storage state, the operating rod is pulled backward, the water curtain baffle is retracted backward into the side plate, and the pin passes through the lower connecting hole and the adjustment slot.

5. The LNG bunkering hull protection spraying device according to claim 1, characterized in that: The longitudinal section of the water curtain baffle presents an inclined umbrella structure, which is bent inwardly, so that the water sprayed from the spray hole can directly hit the upper folded surface in the use state; a supporting rib plate is added on the inner side of the water curtain baffle.

6. The LNG bunkering hull protection spraying device according to claim 1 is characterized by: The arrangement length of the water curtain baffle is greater than the length of the spray pipeline.

7. The LNG bunkering hull protection spraying device according to claim 1, characterized in that: The length of the adjustment slot on the operating rod is equal to the spacing between the front connecting hole and the lower connecting hole on the fixed support frame.

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