Liquid tank leakproof device and ship with same

Abstract

The utility model provides a liquid tank anti-leakage device and a ship with the liquid tank anti-leakage device. The liquid tank anti-leakage device comprises a first connecting pipe and a second connecting pipe; the heat insulation ring is arranged on the inner wall of the inserting end; the plugging assembly is arranged in the first connecting pipe and comprises a heat insulation plugging piece, a guide rod, a mounting piece and an elastic piece, the mounting piece is connected with the first connecting pipe, the heat insulation plugging piece is arranged on the side, close to the inserting end, of the mounting piece, and the axial direction of the guide rod is parallel to the axial direction of the first connecting pipe; one end of the guide rod is connected to the heat insulation plugging piece, the other end of the guide rod movably penetrates out of the mounting piece, the elastic piece sleeves the guide rod, and the two ends of the elastic piece make contact with the heat insulation plugging piece and the mounting piece correspondingly, so that heat insulation sealing of the liquid guide pipe is achieved, and moisture in a cabin is prevented from entering the heat preservation layer through the liquid guide pipe; the service life of the liquid tank is prolonged, the heat preservation performance of the liquid tank is improved, and meanwhile the liquid tank leakproof device is simple in structure and low in cost.

Description

Technical Field

[0001] This utility model generally relates to the field of marine technology, and specifically to a liquid tank leak prevention device and a ship having the same. Background Technology

[0002] Liquefied petroleum gas (LPG) carriers have liquid tanks with an insulation layer around their perimeter. Multiple interconnected liquid channels connect the insulation layer to the tank's outer wall, corresponding to various weld seams on the tank. A liquid guide pipe is located at the bottom of the tank, its top end connecting to a liquid channel and its bottom end extending beyond the insulation layer. A storage pan is located at the bottom of the guide pipe, typically with an open top, into which the guide pipe is inserted. In the event of a weld leak, the leaked LPG flows sequentially through the liquid channels and pipe into the storage pan below the guide pipe, preventing damage to the hull structure.

[0003] However, the aforementioned liquid guide pipe is in communication with the external environment, resulting in some parts of the liquid guide pipe becoming weak points in insulation, which affects the insulation effect of the liquid tank. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a liquid tank leak prevention device and a ship having the same.

[0005] In a first aspect, this application provides a liquid tank leak prevention device, comprising:

[0006] The first connecting tube has a plug end for inserting a liquid guide tube;

[0007] A heat insulation ring is installed on the inner wall of the insertion end;

[0008] A sealing assembly is disposed inside the first connecting pipe. The sealing assembly includes a heat-insulating sealing element, a guide rod, a mounting element, and an elastic element. The mounting element is connected to the first connecting pipe. The heat-insulating sealing element is disposed on the side of the mounting element near the insertion end. A flow guiding gap is formed between the heat-insulating sealing element and the inner wall of the first connecting pipe. The heat-insulating sealing element is used to seal the liquid guiding tube. The axial direction of the guide rod is parallel to the axial direction of the first connecting pipe. One end of the guide rod is connected to the heat-insulating sealing element, and the other end movably extends out of the mounting element. The elastic element is sleeved on the guide rod, and its two ends are in contact with the heat-insulating sealing element and the mounting element, respectively.

[0009] Furthermore, the heat-insulating sealing component has an extension of the surrounding elastic element at one end near the mounting component.

[0010] Furthermore, the heat insulation sealing component is provided with a sealing step structure, which has a stepped surface for sealing and mating with the end face of the liquid guide tube.

[0011] Furthermore, the elastic force of the elastic element on the heat insulation sealing element is adjustable.

[0012] Furthermore, the guide rod includes an extended end that extends out of the mounting piece, and an adjusting nut is screwed onto the extended end.

[0013] Furthermore, the first connecting tube has a connecting end opposite to the plug end, and the end face of the connecting end is recessed with an annular mounting groove. The mounting component includes a first connecting ring, a second connecting ring, and multiple connecting rods. The first connecting ring and the second connecting ring are both axially surrounding the first connecting tube, and the inner diameter of the first connecting ring is larger than the outer diameter of the second connecting ring. The first connecting ring and the second connecting ring are connected by multiple connecting rods, and the multiple connecting rods are spaced apart along the outer periphery of the second connecting ring. The first connecting ring is disposed in the mounting groove, and the inner cavity of the second connecting ring forms a guide hole for the guide rod to pass through.

[0014] Furthermore, the second connecting ring is located on the side of the first connecting ring near the heat insulation sealing component, and the connecting rod is axially inclined relative to the first connecting pipe.

[0015] Furthermore, it also includes a liquid reservoir, the top of which is provided with a sealing cover plate, the sealing cover plate is provided with a second connecting pipe, the first connecting pipe has a connecting end opposite to the plug end, the second connecting pipe is connected to the connecting end, and a heat insulation pad is provided at the position where the first connecting pipe is connected to the connecting end.

[0016] Furthermore, the connecting end is provided with a first connecting flange, the end of the second connecting pipe is provided with a second connecting flange, the first connecting flange and the second connecting flange are connected to each other, and a heat insulation gasket is provided between the first connecting flange and the second connecting flange.

[0017] Secondly, this application also provides a vessel including a liquid tank leak prevention device.

[0018] The liquid tank leak prevention device and the ship having it provided in this application have a heat insulation ring installed at the part between the connecting pipe and the liquid guide pipe, and a sealing component installed inside the connecting pipe. The sealing component can heat-insulate and seal the liquid guide pipe when it does not contain liquefied petroleum gas or contains only a small amount of liquefied petroleum gas, thereby achieving heat insulation and sealing of the liquid guide pipe. It also prevents moisture inside the tank from entering the insulation layer through the liquid guide pipe, thus improving the service life and insulation performance of the liquid tank. At the same time, the above-mentioned liquid tank leak prevention device has a simple structure and low cost. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the liquid tank leak prevention device provided in the embodiments of this application;

[0021] Figure 2 for Figure 1 A half-section diagram of the structure shown. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0023] Please refer to the attached document. Figure 1-2 This application provides a liquid tank leak prevention device for being installed below the liquid tank of a ship, which may be, but is not limited to, an LPG carrier, etc.

[0024] The liquid tank leak-proof device includes a first connecting pipe 110, a heat insulation ring 120, and a sealing assembly. The first connecting pipe 110 connects the liquid guide pipe 200 and the liquid reservoir. Both the first connecting pipe 110 and the liquid guide pipe 200 can be cylindrical. The two ends of the first connecting pipe 110 are a plug-in end and a connecting end, respectively. The plug-in end is for inserting the liquid guide pipe 200, and the connecting end is for connecting to the liquid reservoir. The heat insulation ring 120 is disposed on the inner wall of the plug-in end and can be fixedly connected to the plug-in end by means of adhesive bonding or other methods. When the liquid guide pipe 200 is inserted, the heat insulation ring 120 surrounds the liquid guide pipe 200, and the two are in contact with each other by compression. The heat insulation ring 120 can isolate heat conduction between the liquid guide pipe 200 and the connecting pipe. The material of the heat insulation ring 120 can be, but is not limited to, polyurethane foam, heat insulation cotton, etc.

[0025] A sealing assembly is disposed within the first connecting pipe 110. The sealing assembly includes a heat-insulating sealing element 130, a guide rod 140, a mounting element 150, and an elastic element 160. The mounting element 150 is connected to the first connecting pipe 110, specifically at the connecting end, and has a guide hole. The heat-insulating sealing element 130 is disposed on the side of the mounting element 150 near the insertion end, and is used to seal the liquid guide tube 200 inserted at the insertion end. A flow guiding gap 112 is formed between the heat-insulating sealing element 130 and the inner wall of the first connecting pipe 110. The axial direction of the guide rod 140 is parallel to the axial direction of the first connecting pipe 110. One end of the guide rod 140 is connected to the heat-insulating sealing element 130, and the other end movably passes through the guide hole. The elastic element 160 is sleeved on the guide rod 140, and its two ends contact the heat-insulating sealing element 130 and the mounting element 150, respectively. When the liquid guide tube 200 is inserted into the connector, it presses down on the heat-insulating sealing member 130, compressing the elastic member 160. At this time, driven by the elastic member 160, the heat-insulating sealing member 130 makes tight contact with the liquid guide tube 200, achieving heat insulation and sealing. This compensates for the thermal insulation performance at the liquid guide tube 200 and also prevents moisture from entering the insulation layer through the liquid guide tube 200, improving the service life and insulation performance of the liquid tank. Furthermore, the aforementioned liquid tank leak-proof device has a simple structure and low cost.

[0026] When the liquid guide pipe 200 is blocked, if a weld leak occurs in the liquid tank, the leaked liquid will accumulate in the liquid guide pipe 200. When the accumulated liquid content is small, it will not cause the heat insulation sealing component 130 to move down to maintain the heat insulation seal of the liquid guide pipe 200. When the accumulated liquid content reaches a large amount, it will drive the heat insulation sealing component 130 to move down. At this time, the heat insulation sealing component 130 and the liquid guide pipe 200 will separate, so that the liquid guide pipe 200 and the flow guide gap 112 are connected, thereby allowing the leaked liquid to be discharged into the liquid reservoir.

[0027] The elastic element 160 can be, but is not limited to, a spring, and is preferably a low-temperature resistant spring to ensure that the elastic element 160 remains elastic at low temperatures.

[0028] Among them, the heat insulation sealing component 130 can be roughly cylindrical, and its material can be, but is not limited to, fluorosilicone rubber, etc.

[0029] In some embodiments of this application, the heat-insulating sealing member 130 has an extension 132 at one end near the mounting member 150. The extension 132 is annular and surrounds part of the elastic member 160. The extension 132 can guide the flow direction of liquefied petroleum gas, preventing leaked liquefied petroleum gas from contacting the elastic member 160 and affecting its performance, thereby ensuring the reliability of the device.

[0030] In some embodiments of this application, the top of the heat insulation sealing member 130 is provided with a sealing step structure, the sealing step structure having a step surface 131, the step surface 131 being used for sealing and cooperating with the end face of the liquid guide tube 200.

[0031] In this process, the portion of the sealing step structure located inside the annular step surface 131 is inserted into the liquid guide tube 200 to strengthen the middle part of the heat insulation sealing component 130, so as to avoid the reduction of sealing performance due to deformation of the middle part.

[0032] In some embodiments of this application, the elastic force of the elastic member 160 on the heat insulation sealing member 130 is adjustable, which not only meets the usage requirements of the liquid tank for storing different liquids, but also extends the service life of the leak prevention device.

[0033] Preferably, the guide rod 140 includes an extended end that extends beyond the mounting member 150, and an adjusting nut 170 is screwed onto the extended end. The elastic force can be adjusted by rotating the adjusting nut 170, which is not only simple in structure but also easy to operate.

[0034] In some embodiments of this application, the end face of the connecting end is recessed with an annular mounting groove 111. The mounting component 150 includes a first connecting ring 151, a second connecting ring 152, and a plurality of connecting rods 153. The first connecting ring 151 and the second connecting ring 152 are both axially surrounding the first connecting pipe 110, and the inner diameter of the first connecting ring 151 is larger than the outer diameter of the second connecting ring 152. The first connecting ring 151 and the second connecting ring 152 are connected by a plurality of connecting rods 153, and the plurality of connecting rods 153 are spaced apart along the outer periphery of the second connecting ring 152. The first connecting ring 151 is disposed in the mounting groove 111, and the inner cavity of the second connecting ring 152 forms a guide hole for the guide rod 140 to pass through.

[0035] A liquid guiding hole 154 is formed between any two adjacent connecting rods 153, the first connecting ring 151 and the second connecting ring 152. The liquid guiding hole 154 is used to discharge the liquid flowing out of the guiding gap 112 into the first connecting pipe 110.

[0036] Preferably, the second connecting ring 152 is located on the side of the first connecting ring 151 near the heat-insulating sealing member 130, and the connecting rod 153 is inclined relative to the axial direction of the first connecting pipe 110. This arrangement further prevents leaked liquid from contacting the elastic member 160.

[0037] In some embodiments of this application, the liquid tank leak prevention device further includes a liquid reservoir, which may be box-shaped or tank-shaped. The top of the liquid reservoir is provided with a sealing cover plate, and the sealing cover plate is provided with a second connecting pipe. One end of the second connecting pipe is connected to the connecting end and the other end is connected to the inner cavity of the liquid reservoir. A heat insulation pad is provided at the position where the first connecting pipe 110 is connected to the connecting end.

[0038] Preferably, the connecting end is provided with a first connecting flange 113, the end of the second connecting pipe is provided with a second connecting flange, the first connecting flange 113 and the second connecting flange are connected, and the heat insulation pad is annular and disposed between the first connecting flange 113 and the second connecting flange.

[0039] The material of the heat insulation pad can be, but is not limited to, fluorosilicone rubber, etc.

[0040] This application embodiment also provides a ship, including a liquid tank and the above-mentioned liquid tank leak prevention device. The liquid tank is provided with an insulation layer on the outside and a liquid guide pipe 200 at the bottom of the liquid tank. The top end of the liquid guide pipe 200 is connected to the liquid guide channel between the insulation layer and the liquid tank, and the bottom end of the liquid guide pipe 200 extends out of the insulation layer. The liquid tank leak prevention device is located below the liquid guide pipe 200, and the liquid guide pipe 200 is inserted into the plug end of the first connecting pipe 110.

[0041] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A liquid tank leak prevention device, characterized in that, include: A first connecting tube, the first connecting tube having a plug end for inserting a liquid guide tube; A heat insulation ring is disposed on the inner wall of the insertion end; A sealing assembly is disposed within the first connecting pipe. The sealing assembly includes a heat-insulating sealing element, a guide rod, a mounting element, and an elastic element. The mounting element is connected to the first connecting pipe. The heat-insulating sealing element is disposed on the side of the mounting element near the insertion end. A flow-guiding gap is formed between the heat-insulating sealing element and the inner wall of the first connecting pipe. The heat-insulating sealing element is used to seal the liquid guiding tube. The axial direction of the guide rod is parallel to the axial direction of the first connecting pipe. One end of the guide rod is connected to the heat-insulating sealing element, and the other end movably extends through the mounting element. The elastic element is sleeved on the guide rod, and both ends are in contact with the heat-insulating sealing element and the mounting element, respectively.

2. The liquid tank leak prevention device according to claim 1, characterized in that, The heat-insulating sealing member has an extension of the elastic member surrounding one end near the mounting member.

3. The liquid tank leak prevention device according to claim 1, characterized in that, The heat insulation sealing component is provided with a sealing step structure, the sealing step structure having a stepped surface, the stepped surface being used for sealing and mating with the end face of the liquid guide tube.

4. The liquid tank leak prevention device according to claim 1, characterized in that, The elastic force of the elastic element on the heat insulation sealing element is adjustable.

5. The liquid tank leak prevention device according to claim 4, characterized in that, The guide rod includes an extended end that extends out of the mounting member, and an adjusting nut is screwed onto the extended end.

6. The liquid tank leak prevention device according to claim 1, characterized in that, The first connecting tube has a connecting end opposite to the plug end. The end face of the connecting end is recessed with an annular mounting groove. The mounting component includes a first connecting ring, a second connecting ring, and a plurality of connecting rods. The first connecting ring and the second connecting ring are both axially surrounding the first connecting tube, and the inner diameter of the first connecting ring is larger than the outer diameter of the second connecting ring. The first connecting ring and the second connecting ring are connected by the plurality of connecting rods, and the plurality of connecting rods are spaced apart along the outer periphery of the second connecting ring. The first connecting ring is disposed in the mounting groove, and the inner cavity of the second connecting ring forms a guide hole for the guide rod to pass through.

7. The liquid tank leak prevention device according to claim 6, characterized in that, The second connecting ring is located on the side of the first connecting ring near the heat insulation sealing member, and the connecting rod is inclined relative to the axial direction of the first connecting pipe.

8. The liquid tank leak prevention device according to claim 1, characterized in that, It also includes a liquid reservoir, the top of which is provided with a sealing cover plate, the sealing cover plate is provided with a second connecting pipe, the first connecting pipe has a connecting end opposite to the plug end, the second connecting pipe is connected to the connecting end, and a heat insulation pad is provided at the position where the first connecting pipe is connected to the connecting end.

9. The liquid tank leak prevention device according to claim 8, characterized in that, The connecting end is provided with a first connecting flange, and the end of the second connecting pipe is provided with a second connecting flange. The first connecting flange and the second connecting flange are connected to each other, and the heat insulation pad is disposed between the first connecting flange and the second connecting flange.

10. A ship, characterized in that, Includes the liquid tank leak prevention device as described in any one of claims 1-9.

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