A water tank gravity drain line

Abstract

The utility model relates to a kind of water tank gravity discharge pipeline, including blind plate flange, short pipe, double-plate check valve, remote control butterfly valve and elbow, short pipe is connected with blind plate flange by first flange, blind plate flange is detachably connected with first flange by first bolt, double-plate check valve is connected with short pipe by second flange, remote control butterfly valve is connected with double-plate check valve by third flange and fourth flange, elbow upper end is connected with remote control butterfly valve by fifth flange, elbow lower end is arranged in cabin hole and is connected with bulkhead by double plate;The utility model's discharge pipeline is set blind plate flange in short pipe end portion, and double-plate check valve is set between short pipe and remote control butterfly valve, when pipeline does not need to be discharged, blind plate flange is installed on the first flange in short pipe end portion, pipeline entrance is closed, pipeline and water tank are isolated, avoid silt accumulation in pipeline to cause damage to remote control butterfly valve, can be matched with double-plate check valve, effectively prevent seawater backflow.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, and in particular to a gravity discharge pipeline for a water tank. Background Technology

[0002] Ships navigating in waters with high sediment content and ballasting in such waters experience two main problems due to the accumulation of sediment in the ballast tanks: firstly, reduced cargo capacity; and secondly, accelerated corrosion of ship components. This problem has long plagued ships navigating these waters, and removing the sediment is extremely difficult and resource-intensive. Therefore, ballast tank sedimentation prevention technology has significant practical value and broad application prospects.

[0003] Existing methods for discharging sediment from ballast tanks typically employ gravity discharge. The upper end of the gravity discharge pipe connects to the ballast tank via a remotely controlled butterfly valve, while the lower end connects directly to the sea passage duct. By controlling the remotely controlled butterfly valve, a certain amount of sediment-laden ballast water is periodically released into the sea passage duct and directly discharged overboard. However, this gravity discharge system relies solely on a remotely controlled butterfly valve for control, which presents several drawbacks. First, sediment can easily accumulate at the valve, causing damage. Second, it has weak protection against seawater backflow.

[0004] Therefore, this utility model proposes a gravity discharge pipeline for a water tank to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gravity discharge pipeline for a water tank to solve the problems of easy damage to remote control butterfly valves and weak ability to prevent seawater backflow.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a gravity discharge pipeline for a water tank, the innovation of which lies in: including

[0007] Blind flange;

[0008] A short pipe is connected to a blind flange via a first flange. The first flange is welded to the end of the short pipe, and the blind flange is located on the side of the first flange away from the short pipe and is detachably connected to the first flange via a first bolt.

[0009] A double-plate check valve is connected to a short pipe via a second flange. The second flange is welded to the end of the short pipe away from the first flange, and the double-plate check valve is installed on the side of the second flange away from the short pipe.

[0010] The remote-controlled butterfly valve is connected to a double-plate check valve via a third flange and a fourth flange. The double-plate check valve is mounted on the third flange, and the side of the third flange away from the double-plate check valve is welded to the fourth flange. The remote-controlled butterfly valve is mounted on the side of the fourth flange away from the third flange.

[0011] The elbow is connected to a remote-controlled butterfly valve at its upper end via a fifth flange. The fifth flange is welded to the upper end of the elbow, and the remote-controlled butterfly valve is installed on the side of the fifth flange away from the elbow. A hatch is provided on the bulkhead for the elbow to pass through. The lower end of the elbow passes through the hatch and is connected to the bulkhead via a cladding plate. One side of the cladding plate is welded to the outer wall of the elbow, and the other side is welded to the bulkhead.

[0012] Furthermore, the first flange is a flat-face flange, the second flange is a flat-face flange, and the third, fourth, and fifth flanges are all weld neck flanges.

[0013] Furthermore, a flat gasket is provided between the blind flange and the first flange.

[0014] Furthermore, the blind flange has two sealing water lines on the end face near the first flange.

[0015] Furthermore, a handle is welded to the end face of the blind flange on the side away from the first flange.

[0016] Furthermore, a support plate is provided at the bottom of the second flange, and a reinforcing T-shaped brace is provided on one side of the support plate. The reinforcing T-shaped brace is detachably connected to the support plate by a second bolt, and the reinforcing T-shaped brace is fixedly connected to the deck.

[0017] The advantages of this utility model are:

[0018] (1) This utility model provides a blind flange at the end of the short pipe and a double plate check valve between the short pipe and the remote control butterfly valve. When the pipeline does not need to be drained, the blind flange is installed on the first flange at the end of the short pipe to seal the pipeline inlet, isolate the pipeline from the water tank, and prevent the accumulation of mud and sand in the pipeline from damaging the remote control butterfly valve. It can also cooperate with the double plate check valve to effectively prevent seawater backflow.

[0019] (2) This utility model optimizes the types of five flanges, which facilitates the installation and welding of various components of the pipeline, while ensuring the good structural strength and corrosion resistance of the pipeline.

[0020] (3) This utility model achieves a sealed connection between the blind flange and the first flange by setting a flat gasket between the blind flange and the first flange.

[0021] (4) By setting two sealing water lines on the blind flange and cooperating with the flat gasket, the water tightness between the blind flange and the first flange is further improved.

[0022] (5) By setting a handle on the blind flange, this utility model makes it convenient for operators to apply force to the blind flange, which is beneficial to the disassembly and assembly of the blind flange.

[0023] (6) This utility model achieves stable support for the pipeline by combining the support plate and the reinforced T-shaped brace, thus preventing the pipeline from shaking. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the gravity discharge pipeline for the water tank of this utility model.

[0026] Figure 2 This is a schematic diagram of the blind flange of this utility model.

[0027] Figure 3 This is a cross-sectional view of the blind flange of this utility model. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0029] Example

[0030] This embodiment provides a gravity discharge pipeline for a water tank, such as... Figure 1-3 As shown, it includes a blind flange 1, a short pipe 3, a double-plate check valve 5, a remote-controlled butterfly valve 8, and an elbow 10.

[0031] Short pipe 3 is connected to blind flange 1 via first flange 2. First flange 2 is welded to the end of short pipe 3. Blind flange 1 is located on the side of first flange 2 away from short pipe 3 and is detachably connected to first flange 2 via first bolts. Double plate check valve 5 is connected to short pipe 3 via second flange 4. Second flange 4 is welded to the end of short pipe 3 away from first flange 2. Double plate check valve 5 is installed on the side of second flange 4 away from short pipe 2. Remote control butterfly valve 8 is connected to double plate check valve 5 via third flange 6 and fourth flange 7. Double plate check valve 8 is installed on the side of second flange 6 away from second flange 4. On the three flanges 6, the side of the third flange 6 away from the double-plate check valve 5 is welded to the fourth flange 7. The remote control butterfly valve 7 is installed on the side of the fourth flange 7 away from the third flange 6. The upper end of the elbow 10 is connected to the remote control butterfly valve 8 through the fifth flange 9. The fifth flange 9 is welded to the upper end of the elbow 10. The remote control butterfly valve 8 is installed on the side of the fifth flange 9 away from the elbow 10. A hatch is opened on the bulkhead for the elbow 10 to pass through. The lower end of the elbow 10 passes through the hatch and is connected to the bulkhead through the cover plate 11. One side of the cover plate 11 is fully fusion welded to the outer wall of the elbow 10, and the other side is welded to the bulkhead.

[0032] In this embodiment, the first flange 2 is a flat-face flange, the second flange 4 is a flat-face flange, the third flange 6, the fourth flange 7 and the fifth flange 9 are all welding flanges, and the elbow 10 is a carbon steel right-angle elbow. By optimizing the types of the five flanges, it is convenient to install and weld the various components of the pipeline, while ensuring good structural strength and corrosion resistance of the pipeline.

[0033] To ensure a watertight seal between the blind flange 1 and the first flange 2, a flat gasket 14 is provided between them. The blind flange 1 also has two sealing water lines 16 on its end face closest to the first flange 2. A handle 15 is welded to the end face of the blind flange 1 furthest from the first flange 2, facilitating the application of force to the blind flange 1 and aiding in its assembly and disassembly.

[0034] In this embodiment, a support plate 12 is provided at the bottom of the second flange 4, and a support groove matching the second flange 4 is opened at the top of the support plate 12. The second flange is placed in the support groove. A reinforcing T-shaped support 13 is provided on one side of the support plate 12. One side of the reinforcing T-shaped support 13 is detachably connected to the support plate 12 by a second bolt. The reinforcing T-shaped support 13 is fixedly connected to the deck. Through the cooperation of the support plate 12 and the reinforcing T-shaped support 13, the pipeline is stably supported and the pipeline is prevented from shaking.

[0035] The gravity discharge management of the water tank is achieved by installing a blind flange 1 at the end of the short pipe 3 and a double-plate check valve 5 between the short pipe 3 and the remote-controlled butterfly valve 8. When the discharge pipeline does not require discharge, the blind flange 1 is installed on the first flange 2 at the end of the short pipe 3 to seal the discharge pipeline inlet and isolate the discharge pipeline from the water tank. At this time, the valve at the water tank outlet is closed. When the water tank needs to discharge sediment, the blind flange 1 is first removed to open the discharge pipeline inlet, and then the external connection pipeline is installed. One end is connected to the first flange 2 at the inlet of the discharge pipeline, and the other end is connected to the outlet of the water tank. After the connection is completed, the remote control butterfly valve 8 of the discharge pipeline and the valve at the outlet of the water tank are opened in sequence. The mud and sand in the water tank flow into the gravity discharge pipeline of the water tank through the external connection pipeline under the action of gravity, and are discharged through the lower end of the elbow of the discharge pipeline. After the discharge is completed, the valve at the outlet of the water tank is closed, the external connection pipeline is removed, the discharge pipeline is flushed clean, and the blind flange 1 is installed to seal the inlet of the discharge pipeline.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gravity drain line for a water tank mounted in a bulkhead, characterized in that: include Blind flange; A short pipe is connected to a blind flange via a first flange. The first flange is welded to the end of the short pipe, and the blind flange is located on the side of the first flange away from the short pipe and is detachably connected to the first flange via a first bolt. A double-plate check valve is connected to a short pipe via a second flange. The second flange is welded to the end of the short pipe away from the first flange, and the double-plate check valve is installed on the side of the second flange away from the short pipe. The remote-controlled butterfly valve is connected to a double-plate check valve via a third flange and a fourth flange. The double-plate check valve is mounted on the third flange, and the side of the third flange away from the double-plate check valve is welded to the fourth flange. The remote-controlled butterfly valve is mounted on the side of the fourth flange away from the third flange. The elbow is connected to a remote-controlled butterfly valve at its upper end via a fifth flange. The fifth flange is welded to the upper end of the elbow, and the remote-controlled butterfly valve is installed on the side of the fifth flange away from the elbow. A hatch is provided on the bulkhead for the elbow to pass through. The lower end of the elbow passes through the hatch and is connected to the bulkhead via a cladding plate. One side of the cladding plate is welded to the outer wall of the elbow, and the other side is welded to the bulkhead.

2. A water tank gravity drain line according to claim 1, characterized in that: The first flange is a flat-face flange, the second flange is a flat-face flange, and the third, fourth and fifth flanges are all welding flanges.

3. The water tank gravity drain line of claim 1, wherein: A flat gasket is provided between the blind flange and the first flange.

4. A water tank gravity drain line according to claim 3, characterized in that: The blind flange has two sealing water lines on the end face near the first flange.

5. The water tank gravity drain line of claim 1, wherein: A handle is welded to the end face of the blind flange away from the first flange.

6. The water tank gravity drain line of claim 1, wherein: The second flange has a support plate at its bottom, and a reinforcing T-brace is provided on one side of the support plate. The reinforcing T-brace is detachably connected to the support plate by a second bolt and is fixedly connected to the deck.

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