Steam filling device for heating oil tank of oil tanker

Abstract

The utility model relates to a steam packing device for heating an oil tank of an oil tanker in the field of oil tankers, which comprises a water tank and a heating pipe communicated with the water tank, the lower end of the water tank is fixed and communicated with the heating pipe through a three-way pipe and a connecting pipe, and a deformation diaphragm is fixed in the connecting pipe through a fixed connection ring. The middle of the deformation diaphragm is slidably connected with a water pipe through a first connecting piece. Floating blocks are fixed at the lower ends of the water pipes; the upper end of the water pipe is fixedly sleeved with a fixing ring, and a closed structure is arranged on the fixing ring. By the adoption of the deformation diaphragm, the floating block, the water passing pipe, the opening structure and the closing structure, automatic water adding operation is achieved, it is guaranteed that the water level in the heating pipe is kept within the preset water level, and it is guaranteed that the steam yield is in the continuous yield sufficient state all the time; and when the water level is higher or lower and the steam yield is insufficient, the operation of adding water by mistake is avoided, and the reliability of the steam filling device is ensured.

Description

A steam packing device for heating oil tanks on oil tankers Technical Field

[0001] This utility model relates to a steam packing device for heating oil tanks of oil tankers, and particularly to a steam packing device for heating oil tanks of oil tankers applied in the field of oil tankers. Background Technology

[0002] Existing oil tank heating methods mostly use steam heating. However, with prolonged use of steam heating, the total amount of steam will gradually decrease due to leakage and other reasons. Therefore, it is necessary to add steam regularly. Existing steam adding devices are cumbersome to operate and affect the efficiency of steam adding.

[0003] To address the cumbersome operation of existing steam packing devices, a certain steam packing device on the market adopts a design with a single-chip microcomputer, sensors, and control valves, and has a certain market share.

[0004] Chinese utility model patent CN213630370U discloses a steam packing device for heating oil tanks on polar oil tankers. The device includes a heating pipe, a water tank at one end with a water inlet hopper and a cap, and a connecting pipe at the other end. A first valve connects the heating pipe to the water tank, and a gas flow meter and a second valve are connected to the connecting pipe. Pressure holes are located at both ends of the heating pipe. A pressure sensor, a temperature sensor, and a heater are located on the inner wall of the heating pipe, while a microcontroller is located on the outer wall. An observation plate and matching mounting holes are located on the side wall of the heating pipe, with the edge of the observation plate connecting to the wall of the mounting holes. A water level scale is provided on the observation plate. This steam packing device for heating oil tanks on polar oil tankers facilitates the addition of steam and allows for monitoring of the amount of steam added.

[0005] Existing steam packing devices mainly rely on sensors to detect gas pressure and manual observation of water level to determine whether to add water to the steam pipeline. The opening and closing of valves require manual operation of a microcontroller. Although the operation is convenient, it still has the problem of high operation frequency and difficulty in achieving automated packing. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a steam packing device that can automatically fill the packing, thereby reducing the operation frequency of workers and thus reducing the workload of workers.

[0007] To solve the above problems, this utility model provides a steam packing device for heating oil tanks of oil tankers, including a water tank and a heating pipe connected to the water tank. A heater is fixedly installed inside the heating pipe, and a gas flow meter and a first valve are installed at the end of the heating pipe away from the water tank.

[0008] The lower end of the water tank is fixed and connected to the heating tube through a three-way pipe and a connecting pipe. A deformable diaphragm is fixed inside the connecting pipe by a fixed ring. The deformable diaphragm divides the inside of the connecting pipe into upper and lower cavities. A water pipe is slidably connected to the middle of the deformable diaphragm through a connector. The water pipe slides through the deformable diaphragm. Water inlet and water outlet holes are opened at the upper and lower ends of the water pipe, respectively.

[0009] A float is fixed at the lower end of the water pipe, and the float is vertically slidably connected to the bottom of the heating pipe through connector two;

[0010] A fixing ring is fixedly fitted at the upper end of the water pipe, and a closing structure is provided on the fixing ring to block the water inlet hole;

[0011] An opening structure is rotatably installed at the upper end of the deformable diaphragm. The opening structure is used to open the closing structure. The opening structure rises and falls with the top of the deformable diaphragm. At the same time as the opening structure rises and falls, it also rotates a certain angle along the axis of the water pipe, so that the opening structure and the closing structure are aligned or staggered.

[0012] In the aforementioned steam packing device for heating oil tanks on oil tankers, a deformable diaphragm is used to indicate the gas pressure inside the heating tube, and a float is used to indicate the water level inside the heating tube. Through the cooperation of the opening and closing structures, water can be automatically added to the heating tube when the steam output is sufficient or insufficient, or when the water level is at its lowest. This achieves automatic water addition without the need for sensors and controllers. Furthermore, the mechanical structure design eliminates its dependence on electricity and makes it less prone to damage, greatly improving the reliability of the steam packing device for heating oil tanks on oil tankers. This ensures that the water level inside the heating tube remains within the preset level, guaranteeing a continuous and sufficient steam output. When the water level is high or low, or the steam output is insufficient, no accidental water addition will be performed, ensuring the reliability of the steam packing device.

[0013] As a further improvement of this application, the closed structure includes a blocking block and a spring. A groove is opened on the fixing ring, and the blocking block is slidably embedded in the groove. The upper end of the blocking block is elastically connected to the top of the groove through the spring. The groove is a vertical groove with an opening at the lower end, and a limiting rib is formed at the lower opening of the groove to limit the blocking block.

[0014] As a further improvement of this application, the opening structure includes a movable plate and a lifting column. The lower end of the movable plate is rotatably connected to the upper end of a connector, and the lower end of the lifting column is fixed to the upper surface of the movable plate. When the movable plate rotates at a certain angle, the positions of the lifting column and the blocking block correspond or are offset.

[0015] As a further improvement of this application, an arc-shaped groove is provided on the inner side wall of the connecting pipe, a support rod is fixed around the movable plate, and a rotating rod is rotatably connected to the end of the support rod, which is movably embedded in the arc-shaped groove.

[0016] As another improvement of this application, the connector includes a sealing slip ring, the middle part of the deformable diaphragm is fixed to the outer side of the sealing slip ring, and the inner side of the sealing slip ring is slidably and sealingly connected to the periphery of the water pipe.

[0017] The second connector includes a limiting guide rod. The lower end of the limiting guide rod is fixed to the inner bottom wall of the heating tube, and the upper end of the limiting guide rod is higher than the upper end of the float. The float has a sliding hole for the limiting guide rod to slide through.

[0018] As another improvement of this application, the tee pipe and the water tank, the tee pipe and the connecting pipe, and the connecting pipe and the heating pipe are all detachably fixed by a flange structure. The other output end of the tee pipe is integrally formed with a water inlet pipe. The end of the water inlet pipe away from the tee pipe is fixed and connected to the heating pipe. A second valve is provided on the water inlet pipe.

[0019] A pressure sensor and a water level sensor are installed on the inner side of the middle section of the heating tube away from the connecting tube. A microcontroller is installed on the outer side of the heating tube. The microcontroller is electrically connected to the heater, gas flow meter, first valve, pressure sensor, water level sensor and second valve.

[0020] In summary, by using a deformable diaphragm to indicate the gas pressure inside the heating tube and a float to indicate the water level, the system can automatically add water to the heating tube when steam production is sufficient or insufficient, or when the water level is at its lowest. This achieves automatic water addition without the need for sensors or controllers. Furthermore, the mechanical design eliminates its dependence on electricity and makes it less prone to damage, significantly improving the reliability of the steam packing device for heating the oil tanker. This ensures that the water level inside the heating tube remains within the preset range, guaranteeing a consistently sufficient steam output. Conversely, it prevents accidental water addition when the water level is too high or too low, or when steam production is insufficient, thus ensuring the reliability of the steam packing device. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural diagram of an embodiment of this application;

[0022] Figure 2 is a cross-sectional view of an embodiment of this application;

[0023] Figure 3 is a schematic diagram of the internal structure of the connecting pipe in cross-section according to an embodiment of this application;

[0024] Figure 4 is a schematic diagram of the disassembled structure of the deformable diaphragm and movable plate according to an embodiment of this application;

[0025] Figure 5 is a schematic diagram of the disassembled structure of the water pipe and the fixing ring according to an embodiment of this application.

[0026] Explanation of the labels in the diagram:

[0027] 1. Water tank, 2. Heating tube, 3. Heater, 4. Gas flow meter, 5. First valve, 6. Air pressure sensor, 7. Water level sensor, 8. Microcontroller, 9. Connecting pipe, 10. T-connector, 11. Water supply auxiliary pipe, 12. Second valve, 13. Deformable diaphragm, 14. Float, 15. Water pipe, 16. Water outlet, 17. Sliding hole, 18. Arc-shaped sliding groove, 19. Movable plate, 20. Support rod, 21. Rotating rod, 22. Fixing ring, 23. Sliding groove, 24. Lifting column, 25. Sealing slip ring, 26. Fixed connection ring, 27. Blocking block, 28. Limiting rib, 29. Spring, 30. Water inlet, 31. Limiting guide rod. Detailed Implementation

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0029] Implementation method:

[0030] Figures 1-5 show a steam packing device for heating oil tanks of oil tankers, including a water tank 1 and a heating pipe 2 connected to the water tank 1. A heater 3 is fixedly installed inside the heating pipe 2, and a gas flow meter 4 and a first valve 5 are installed at the end of the heating pipe 2 away from the water tank 1.

[0031] The lower end of the water tank 1 is fixed and connected to the heating tube 2 through a three-way pipe 10 and a connecting pipe 9. A deformable diaphragm 13 is fixed inside the connecting pipe 9 through a fixed ring 26. The deformable diaphragm 13 divides the inside of the connecting pipe 9 into upper and lower cavities. A water pipe 15 is slidably connected to the middle of the deformable diaphragm 13 through a connector. The water pipe 15 slides through the deformable diaphragm 13. The upper and lower ends of the water pipe 15 are respectively provided with a water inlet 30 and a water outlet 16.

[0032] A float 14 is fixed at the lower end of the water pipe 15. The float 14 is vertically and slidably connected to the bottom of the heating pipe 2 through the connector 2.

[0033] A fixing ring 22 is fixedly sleeved on the upper end of the water pipe 15. A closing structure is provided on the fixing ring 22, which is used to block the water inlet hole 30.

[0034] An opening structure is rotatably installed on the upper end of the deformable diaphragm 13. The opening structure is used to open the closing structure. The opening structure rises and falls with the top of the deformable diaphragm 13. While the opening structure rises and falls, it also rotates at a certain angle along the axis of the water pipe 15, so that the opening structure and the closing structure are in the same position or staggered.

[0035] Based on the above structure, the deformable diaphragm 13 is used to represent the air pressure inside the heating tube 2 (i.e., the connecting tube 9), and the float 14 is used to represent the water level inside the heating tube 2, resulting in the following five states:

[0036] When the gas pressure inside the heating tube 2 is high (steam production is sufficient, the same below) and the water level is high (the water level is higher than the preset maximum water level inside the heating tube 2, the same below), the gas pressure causes the deformable diaphragm 13 to bulge upwards, thereby causing the closed structure to rise and rotate at a certain angle, offsetting the position of the open structure. Meanwhile, the float 14 is lifted by buoyancy, causing the water pipe 15 and the closed structure to rise synchronously. At this time, the open structure and the closed structure separate, and the closed structure blocks the water inlet 30. At this time, the water in the water tank 1 cannot enter the heating tube 2 through the water pipe 15.

[0037] When the air pressure inside the heating tube 2 is high and the water level is low (the water level is between the preset highest and lowest water levels inside the heating tube 2, the same below), the air pressure causes the deformable diaphragm 13 to bulge upwards, thereby causing the closed structure to rise and rotate at a certain angle, offset from the position of the open structure. Meanwhile, the float 14 is still lifted by buoyancy, so the water pipe 15 is insufficient to overcome the lifting force of the deformable diaphragm 13 and the lifting force of the float 14 under the influence of its own weight and the weight of the closed structure. At this time, the water in the water tank 1 cannot enter the heating tube 2 through the water pipe 15.

[0038] When the air pressure inside the heating tube 2 is relatively high and the water level is at its lowest (the water level drops to the preset lowest water level inside the heating tube 2, the same below), the air pressure still causes the deformable diaphragm 13 to bulge upwards. However, at this time, the float 14 is suspended and is no longer affected by the buoyancy of the water. Therefore, the water pipe 15 overcomes the lifting force of the deformable diaphragm 13 and descends under the influence of the total weight of itself, the float 14 and the closed structure, thereby forcing the open structure to descend as well. After rotating a certain angle, it corresponds to the position of the closed structure, so that the closed structure is opened. At this time, the water in the water tank 1 enters the water pipe 15 through the water inlet 30 and enters the heating tube 2 through the water outlet 16.

[0039] When the gas pressure inside the heating tube 2 is low (steam production is insufficient, the same below) and the water level is at its lowest, the deformable diaphragm 13 resets to form a planar diaphragm, the opening structure descends and rotates at a certain angle, and the float 14 is suspended in the air and is no longer affected by the buoyancy of the water. Therefore, the water pipe 15 descends under the influence of its own weight, the float 14 and the total weight of the closed structure, so that the opening structure corresponds to the closed structure, and the closed structure is opened. At this time, the water in the water tank 1 enters the water pipe 15 through the water inlet 30 and enters the heating tube 2 through the water outlet 16.

[0040] When the air pressure inside the heating tube 2 is low and the water level is high or low, the deformable diaphragm 13 resets to form a planar diaphragm, the open structure descends and rotates at a certain angle, and the float 14 is affected by buoyancy, causing the water pipe 15 to drive the closed structure to remain at a certain height, so that the closed structure separates from the open structure. At this time, the water in the water tank 1 cannot enter the heating tube 2 through the water pipe 15.

[0041] By coordinating the opening and closing structures, water can be automatically added to the heating tube 2 when the steam output is sufficient or insufficient, or when the water level is at its lowest. This achieves automatic water addition without the need for sensors or controllers. Furthermore, the mechanical design eliminates its dependence on electricity and makes it less prone to damage (especially to circuits and electronic components). This significantly improves the reliability of the steam packing device for heating the oil tanker, ensuring that the water level in the heating tube 2 remains within the preset range and that the steam output is consistently sufficient. In cases where the water level is high or low, or the steam output is insufficient, no accidental water addition will be performed, thus ensuring the reliability of the steam packing device.

[0042] Furthermore, the closed structure includes a blocking block 27 and a spring 29. A groove 23 is provided on the fixing ring 22. The blocking block 27 is slidably embedded in the groove 23. The upper end of the blocking block 27 is elastically connected to the top of the groove 23 through the spring 29. The groove 23 is a vertical groove with an opening at the lower end, and a limiting rib 28 is formed at the lower opening of the groove 23 to limit the blocking block 27.

[0043] The inner wall of the connecting pipe 9 is provided with an arc-shaped groove 18, and a support rod 20 is fixed around the movable plate 19. The end of the support rod 20 is rotatably connected to a rotating rod 21, which is movably embedded in the arc-shaped groove 18.

[0044] The opening structure includes a movable plate 19 and a lifting column 24. The lower end of the movable plate 19 is rotatably connected to the upper end of a connector, and the lower end of the lifting column 24 is fixed to the upper surface of the movable plate 19. When the movable plate 19 rotates at a certain angle, the position of the lifting column 24 corresponds to or is offset from that of the blocking block 27.

[0045] When the position of the movable plate 19 is raised, the support rods 20 on the periphery of the movable plate 19 are raised accordingly, so that the rotating rod 21 rotates and rises along the arc-shaped slide groove 18, thereby causing the movable plate 19 to rotate at a certain angle (the specific angle is designed according to the size of the equipment, the inner diameter of the connecting pipe 9, the diameter of the movable plate 19, and the length of the support rod 20), so that the lifting column 24 and the blocking block 27 are misaligned. At this time, no matter whether the fixing ring 22 rises or falls with the water pipe 15, as long as the fixing ring 22 is not enough to drive the movable plate 19 to fall, the lifting column 24 will not contact the blocking block 27. Under the elastic force of the spring 29, the blocking block 27 abuts against the lower end limiting rib 28 of the slide groove 23 and blocks the water inlet hole 30.

[0046] When the movable plate 19 descends, the support rods 20 around the movable plate 19 also descend, causing the rotating rod 21 to rotate and descend along the arc-shaped slide groove 18. This causes the movable plate 19 to rotate in the opposite direction by a certain angle, and the lifting column 24 to correspond to the position of the blocking block 27. At this time, if the fixing ring 22 descends with the water pipe 15, the lifting column 24 will abut against the lower end of the blocking block 27, causing the blocking block 27 to overcome the elastic force of the spring 29 and rise relative to the water inlet 30 in the slide groove 23. This exposes the water inlet 30, allowing the water in the water tank 1 to enter the water pipe 15 through the three-way pipe 10 and the connecting pipe 9, and then be discharged from the water outlet 16 at the lower end of the water pipe 15 to the heating pipe 2, thus realizing the automatic water filling function.

[0047] Among them, the first connecting component includes a sealing slip ring 25, the middle part of the deformable diaphragm 13 is fixed to the outer side of the sealing slip ring 25, and the inner side of the sealing slip ring 25 is slidably and sealingly connected to the periphery of the water pipe 15.

[0048] The second connector includes a limiting guide rod 31. The lower end of the limiting guide rod 31 is fixed to the inner bottom wall of the heating tube 2, and the upper end of the limiting guide rod 31 is higher than the upper end of the float 14. The float 14 has a sliding hole 17 for the limiting guide rod 31 to slide through.

[0049] Furthermore, the three-way pipe 10 is detachably fixed to the water tank 1, the three-way pipe 10 and the connecting pipe 9, and the connecting pipe 9 and the heating pipe 2 through a flange structure. The other output end of the three-way pipe 10 is integrally formed with a water supply sub-pipe 11. The end of the water supply sub-pipe 11 away from the three-way pipe 10 is fixed and connected to the heating pipe 2. A second valve 12 is provided on the water supply sub-pipe 11.

[0050] A pressure sensor 6 and a water level sensor 7 are installed on the inner side of the middle section of the heating tube 2 away from the connecting tube 9. A microcontroller 8 is installed on the outer side of the heating tube 2. The microcontroller 8 is electrically connected to the heater 3, the gas flow meter 4, the first valve 5, the pressure sensor 6, the water level sensor 7, and the second valve 12.

[0051] The air pressure sensor 6 and the water level sensor 7 can help detect the air pressure and water level in the heating tube 2, so that the staff can make a reference judgment. When the air pressure and water level in the heating tube 2 are continuously at the warning value (the preset minimum water level or minimum air pressure), the staff can intervene in time.

[0052] For example, when the water level is high or low, or the steam output is insufficient (insufficient steam output will result in low gas pressure inside the heating tube 2), the staff can use the microcontroller 8 to control the heater 3 to increase the temperature inside the heating tube 2, accelerate the steam output, and make the steam output sufficient and the gas pressure return to normal.

[0053] For example, when the water level in the heating tube 2 is consistently lower than the preset minimum water level, the operator can control the second valve 12 to open via the microcontroller 8, allowing water to be directly added to the heating tube 2 through the water supply auxiliary pipe 11. This prevents water addition from being impossible if the opening or closing structure inside the connecting pipe 9 malfunctions. In this case, the connecting pipe 9 can be removed to repair the internal opening or closing structure. At the same time, after sealing the three-way pipe 10 and the end connecting the heating tube 2 to the connecting pipe 9, steam can still be continuously output to ensure a continuous supply of steam. After repair (or replacement), the connecting pipe 9 can be reconnected to continue the automatic water addition operation.

[0054] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A steam packing device for heating oil tanks of oil tankers, comprising a water tank (1) and a heating pipe (2) communicating with the water tank (1), wherein a heater (3) is fixedly installed inside the heating pipe (2), and a gas flow meter (4) and a first valve (5) are installed at the end of the heating pipe (2) away from the water tank (1), characterized in that: The lower end of the water tank (1) is fixed and connected to the heating pipe (2) through a three-way pipe (10) and a connecting pipe (9). A deformable diaphragm (13) is fixed inside the connecting pipe (9) by a fixing ring (26). The deformable diaphragm (13) divides the inside of the connecting pipe (9) into upper and lower cavities. A water pipe (15) is slidably connected to the middle of the deformable diaphragm (13) through a connector. The water pipe (15) slides through the deformable diaphragm (13). The upper and lower ends of the water pipe (15) are respectively provided with a water inlet (30) and a water outlet (16). A float (14) is fixed at the lower end of the water pipe (15). The float (14) is vertically slidably connected to the bottom of the heating tube (2) through the connector 2; a fixing ring (22) is fixedly sleeved on the upper end of the water pipe (15), and a closing structure is provided on the fixing ring (22), which is used to block the water inlet hole (30); an opening structure is rotatably installed on the upper end of the deformable diaphragm (13), which is used to open the closing structure. The opening structure rises and falls with the rise and fall of the top of the deformable diaphragm (13), and at the same time as the opening structure rises and falls, it also rotates a certain angle along the axis of the water pipe (15), so that the opening structure and the closing structure are in the same position or staggered.

2. The steam packing device for heating oil tanks of an oil tanker according to claim 1, characterized in that: The closed structure includes a blocking block (27) and a spring (29). A groove (23) is provided on the fixing ring (22). The blocking block (27) is slidably embedded in the groove (23). The upper end of the blocking block (27) is elastically connected to the top of the groove (23) through the spring (29). The groove (23) is a vertical groove with an opening at the lower end. A limiting rib (28) is formed at the lower opening of the groove (23) to limit the blocking block (27).

3. A steam packing device for heating oil tanks on an oil tanker according to claim 2, characterized in that: The opening structure includes a movable plate (19) and a lifting column (24). The lower end of the movable plate (19) is rotatably connected to the upper end of a connector. The lower end of the lifting column (24) is fixed to the upper surface of the movable plate (19). When the movable plate (19) rotates at a certain angle, the position of the lifting column (24) corresponds to or is offset from that of the blocking block (27).

4. A steam packing device for heating oil tanks on an oil tanker according to claim 3, characterized in that: The inner wall of the connecting pipe (9) is provided with an arc-shaped groove (18), and a support rod (20) is fixed around the movable plate (19). The end of the support rod (20) is rotatably connected to a rotating rod (21), which is movably embedded in the arc-shaped groove (18).

5. A steam packing device for heating oil tanks on an oil tanker according to claim 2, characterized in that: The first connector includes a sealing slip ring (25), the middle part of the deformable diaphragm (13) is fixed to the outer side of the sealing slip ring (25), and the inner side of the sealing slip ring (25) is slidably and sealed to the periphery of the water pipe (15); the second connector includes a limiting guide rod (31), the lower end of the limiting guide rod (31) is fixed to the inner bottom wall of the heating tube (2), the upper end of the limiting guide rod (31) is higher than the upper end of the float (14), and the float (14) is provided with a sliding hole (17) through which the limiting guide rod (31) slides.

6. A steam packing device for heating oil tanks on an oil tanker according to claim 1, characterized in that: The three-way pipe (10) is detachably fixed to the water tank (1), the three-way pipe (10) and the connecting pipe (9), and the connecting pipe (9) and the heating pipe (2) through a flange structure. The other output end of the three-way pipe (10) is integrally formed with a water supply sub-pipe (11). The end of the water supply sub-pipe (11) away from the three-way pipe (10) is fixed and connected to the heating pipe (2). The water supply sub-pipe (11) is provided with a second valve (12). The middle section of the heating pipe (2) away from the connecting pipe (9) is equipped with a pressure sensor (6) and a water level sensor (7). The heating pipe (2) is equipped with a microcontroller (8) on the outside. The microcontroller (8) is electrically connected to the heater (3), the gas flow meter (4), the first valve (5), the pressure sensor (6), the water level sensor (7), and the second valve (12).

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