An automatic relief device applied to a breather pipeline and an assembling and using method thereof

Abstract

The application discloses an automatic relief device applied to a gas venting pipeline and an assembling and using method thereof, and can be used for existing gas venting pipeline reforming. The device comprises a relief pipe, a blind plate flange and a manual switch valve. The top end port of the relief pipe is connected with the gas venting pipeline, and the end port is located directly above a relief funnel. The relief pipe is provided with a water seal structure, which is composed of a relief straight pipe, a water seal pipe and an overflow pipe. The communication position of the overflow pipe and the water seal pipe is higher than the communication position of the water seal pipe and the relief straight pipe. The blind plate flange is detachably installed at the end port of the relief straight pipe, and the manual switch valve is detachably installed at the top end port of the water seal pipe. The relief pipe with the self-relief function is arranged on the gas venting pipeline of an oil cabin, so that the condensed water and the condensed oil can be automatically relieved, the pipeline can be smoothly and cleaned, the risk of external pollution is reduced, and the oil quality is ensured. Furthermore, the electromagnetic valve is replaced, and the liquid level sensor and the control system are arranged, so that the artificial repeated inspection is avoided, and the labor cost is saved.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and in particular relates to an automatic venting device for use in venting pipelines and its assembly and usage method. Background Technology

[0002] The diesel fuel tank, MGO tank, cylinder oil tank, lubricating oil tank, and other compartments on ships usually require strict quality control of the stored oil. However, due to the low location of some compartments, the vent pipes have long paths. In addition, the temperature difference in the areas through which the vent pipes pass (such as the area near the exhaust pipe and the air outlet area of ​​the ventilation system) is large, which can easily cause condensation to form in the pipes and flow back into the oil tanks. This not only increases the water content of the oil stored in the tanks, but the contaminated condensate can also cause the oil to deteriorate or even emulsify. If the deteriorated oil is not detected and treated in time, it will cause greater damage to the equipment.

[0003] Currently, there are two conventional methods for designing venting systems: one method involves connecting the ends of the venting pipes for each lubricating oil compartment and the venting pipes for each fuel oil compartment side-by-side to the same venting collection pipe as a main venting manifold. When condensate or condensed oil accumulates in this manifold, it is then manually drained by opening the vent valve. Figure 1 As shown in the diagram; another method is to extend the vent pipe of the oil tank from the engine room as a separate line, but this vent pipe often lacks any condensate drainage measures. Therefore, none of the above conventional methods can guarantee the timely discharge of condensate and condensed oil in the vent pipe. In particular, when using the main gas gathering pipe section in the first design, there is even a risk of backflow due to the inability to discharge accumulated condensate in time. Moreover, the evaporated gases between different oil tanks may also interfere with each other through the parallel-connected main gas gathering pipe section, thereby affecting the quality of the oil in each oil tank.

[0004] A Chinese utility model application with publication number CN207550463U discloses a venting pipe venting device, "installed at the bottom of a venting pipe, including a short pipe connected to the bottom of the venting pipe, the short pipe being connected to one end of a cavity short pipe, the upper and lower ends of the cavity forming a cavity with cavity sealing plates, a stainless steel float that can move up and down is installed in the cavity, the lower end of the cavity is the venting port, the stainless steel float normally closes the venting port, when the ballast tank water level rises and the venting pipe is completely filled with air, the venting device is closed under the action of gravity, when the water level rises to the top of the venting pipe opening." After entering the vent pipe, it enters the venting device. The float rises due to buoyancy, thus opening the venting port of the venting device. However, this venting device relies on the gravity change caused by the weighted connecting rod with a counterweight at the bottom of the stainless steel float during the filling and emptying process of the ballast tank, which limits its application range and makes it unsuitable for a wider range of applications. Moreover, the maintenance process of this device is quite cumbersome. When disassembling or repairing, it is necessary to remove the disassembly flange, split the cavity into upper and lower parts, or remove the middle threaded plug and the bottom threaded plug. These operations are not only time-consuming but may also damage the device. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide an automatic venting device for venting pipelines and its assembly and usage method. By installing a venting pipe with self-venting function in the middle section of the venting pipe in the oil tank, not only can condensate and oil condensate in the venting pipeline be automatically vented, but it also has the function of unblocking and cleaning the pipeline when the tank is empty. By reducing the risk of external contamination, the quality of oil in the oil tank is directly guaranteed. Furthermore, by setting up a liquid level sensor and control system, the repeated inspection of the water seal status by workers is avoided, saving labor costs.

[0006] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides an automatic venting device for use in a venting pipeline, comprising a venting pipe, a blind flange for providing a cleaning inlet, and a manual on / off valve for injecting water for water seal or cleaning gas.

[0008] The top end of the vent pipe is connected to the vent pipe, and the bottom end of the vent pipe is located directly above the vent funnel. The vent pipe is equipped with a water seal structure, which consists of a vent straight pipe, a water seal pipe, and an overflow pipe connected sequentially from right to left. This ensures that the connection between the overflow pipe and the water seal pipe is higher than the connection between the water seal pipe and the vent straight pipe, allowing liquid above the lowest point of the connection between the overflow pipe and the water seal pipe to automatically flow into the vent funnel through the overflow pipe. The lowest point of the connection between the overflow pipe and the water seal pipe is the water seal height. The bottom end of the vent straight pipe is detachably fitted with the blind flange. The top end of the water seal pipe is detachably fitted with the manual switch valve, which includes a ball valve or a shut-off valve.

[0009] As a preferred technical solution, the specific structure of the discharge pipe is as follows: the top end of the discharge straight pipe is connected to the vent pipe at the first bend; the bottom end of the water seal pipe is connected to the lower end of the discharge straight pipe through the first interface; the top end of the overflow pipe is connected to the upper end of the water seal pipe through the second interface; the bottom end of the overflow pipe extends to the discharge funnel opening; the lowest point of the second interface is higher than the highest point of the first interface, so that liquid above the lowest point of the second interface automatically flows into the discharge funnel through the overflow pipe.

[0010] As a preferred technical solution, the drain straight pipe is also equipped with a drain valve for emptying the liquid in the pre-drainage pipe before cleaning. The drain valve is located near the blind flange, and the drain valve and the connecting hose are detachably connected.

[0011] As a preferred technical solution, the manual switch valve can be replaced with a solenoid valve. The device also includes a level sensor and a control system for monitoring the liquid level within the water seal structure. The level sensor is installed on the inner wall of the water seal pipe, near the top port of the water seal pipe. The level sensor is signal-connected to the control system, and the control system is electrically connected to the solenoid valve, ensuring that the measurement signal measured by the level sensor is transmitted to the control system in real time. The control system converts the measurement signal into an action signal, enabling the solenoid valve to automatically open and close according to the liquid level. When the actual liquid level detected by the level sensor is lower than the predetermined water seal height, the solenoid valve automatically opens; when the actual liquid level detected by the level sensor reaches the predetermined water seal height, the solenoid valve automatically closes; when the actual liquid level exceeds the predetermined water seal height, the liquid above the water seal height automatically flows into the discharge funnel through the end of the overflow pipe.

[0012] As a further preferred technical solution, the inner wall of the discharge pipe that is lower than the predetermined water seal height is subjected to corrosion-resistant galvanizing treatment.

[0013] A second aspect of the present invention provides a method for assembling and using an automatic venting device applied to a venting pipeline, comprising the following steps:

[0014] S1. Determine the diameter of the vent pipe based on the evaporation rate of the corresponding compartment and the type of storage medium:

[0015] When the vent pipe corresponds to a diesel tank, fuel oil day tank, or sedimentation tank, the diameter of the vent pipe used is 65 mm; when the vent pipe corresponds to another compartment, the diameter of the vent pipe used is 50 mm or less.

[0016] S2. Install an automatic venting device on the existing vent pipe:

[0017] A vent pipe with a water seal structure is installed at the lowest point of the vent pipe. The end of the vent pipe is connected to the top of the vent funnel in the compartment. A manual switch valve for injecting water for the water seal or cleaning gas is installed on the vent pipe. The manual switch valve is located at the highest turning point of the water seal structure. At the same time, a detachable blind flange is installed on the vent pipe. The blind flange is located at the lowest point of the water seal structure where water is to be stored.

[0018] S3. Continuously inject water into the discharge pipe through the manual switch valve to form a water seal:

[0019] Connect the manual switch valve to the water injection line via the connector hose. Open the manual switch valve to inject water into the drain pipe until water is observed leaking from the end of the drain pipe, forming a water seal in the drain pipe. The liquid level at this point is the water seal height. Close the manual switch valve and remove the connector hose. Condensed water and condensed oil in the vent pipe enter the drain pipe from the lowest point of the vent pipe and continue to accumulate in the drain pipe. When the liquid level is higher than the water seal height, the liquid above the water seal height will automatically flow into the drain funnel through the end of the drain pipe.

[0020] S4. After each voyage, check the water seal status in the drain pipe and replenish water accordingly:

[0021] Open the manual switch valve and visually inspect the liquid level using the illumination reflection to check if the water seal is normal. When there is no liquid level reflection in the vertical pipe where the manual switch valve is located, repeat step S3 to replenish water into the drain pipe.

[0022] S5. When the compartment connected to the vent pipe through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe:

[0023] Remove the blind flange, drain the residual liquid in the vent pipe through the blind flange, reinstall it, temporarily seal the end port of the vent pipe with a wooden plug, open the manual switch valve and connect compressed air or steam through the manual switch valve to clear and clean the inner wall of the vent pipe.

[0024] As a preferred technical solution, in step S2, the specific steps for installing the automatic discharge device include: sequentially installing and connecting the discharge straight pipe, the L-shaped water seal pipe, and the inverted L-shaped overflow pipe from the second bend of the vent pipe downwards, with the connection point between the overflow pipe and the water seal pipe higher than the connection point between the water seal pipe and the discharge straight pipe, and the end port of the overflow pipe positioned above the discharge funnel opening; then, detachably installing the blind flange at the end port of the discharge straight pipe, the blind flange being used for daily pipe closure to prevent leakage of water seal water, and also for periodically discharging residual liquid in the pipe and providing an inlet for cleaning the pipe; finally, installing the manual switch valve at the top port of the water seal pipe, which can be connected to a water inlet pipe for injecting water seal water, and can also be connected to a compressed air or steam system for injecting compressed air or steam when the pipe needs to be purged.

[0025] As a preferred technical solution, in step S2, a drain valve with a detachable connecting hose is installed on the drain pipe near the blind flange. In step S5, before removing the blind flange, the drain valve is connected to the drain funnel through the connecting hose, and the drain valve is opened to drain the liquid in the drain pipe.

[0026] A third aspect of the present invention provides another method for assembling and using an automatic venting device applied to a venting pipeline, comprising the following steps:

[0027] S1. Determine the diameter of the vent pipe based on the evaporation rate of the corresponding compartment and the type of storage medium:

[0028] When the vent pipe corresponds to a diesel tank, fuel oil day tank, or sedimentation tank, the diameter of the vent pipe used is 65 mm; when the vent pipe corresponds to another compartment, the diameter of the vent pipe used is 50 mm or less.

[0029] S2. Install an automatic venting device on the existing vent pipe:

[0030] A vent pipe with a water seal structure is installed at the lowest point of the vent pipe. The end of the vent pipe is connected to the top of the vent funnel in the compartment. A solenoid valve for injecting water for the water seal or cleaning gas is installed on the vent pipe. The solenoid valve is located at the highest turning point of the water seal structure. At the same time, a detachable blind flange is installed on the vent pipe. The blind flange is located at the lowest point of the predetermined water storage on the water seal structure.

[0031] S3. Install a level sensor inside the drain pipe to ensure automatic replenishment of the water seal.

[0032] Install the level sensor above the predetermined maximum water level in the water seal structure and keep the sensor vertical. Connect the level sensor signal to the control system and electrically connect the control system to the solenoid valve. Simultaneously, connect the solenoid valve to the water injection pipeline. Set the predetermined water seal height and perform an energization test. Ensure that when the actual liquid level detected by the level sensor is lower than the predetermined water seal height, the control system automatically opens the solenoid valve, allowing water to continuously enter the drain pipe from the water injection pipeline. When the actual liquid level detected by the level sensor reaches the predetermined water seal height, the control system automatically closes the solenoid valve. At this time, if water is observed flowing from the drain pipe into the drain funnel, adjust and lower the predetermined water seal height setting. When the actual liquid level exceeds the predetermined water seal height due to the continuous accumulation of condensate and oil in the vent pipe, the liquid above the water seal height will automatically flow into the drain funnel through the end of the drain pipe.

[0033] S4. When the compartment connected to the vent pipe through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe:

[0034] Remove the blind flange, drain the residual liquid in the drain pipe through the blind flange, and then reset the blind flange. At the same time, temporarily seal the end port of the drain pipe with a wooden plug, remove the liquid level sensor, open the solenoid valve, and connect compressed air or steam through the solenoid valve to clear and clean the inner wall of the drain pipe.

[0035] As a preferred technical solution, in step S2, a drain valve with a detachable connecting hose is installed on the drain pipe near the blind flange. In step S4, before removing the blind flange, the drain valve is connected to the drain funnel through the connecting hose, and the drain valve is opened to drain the liquid in the drain pipe.

[0036] As described above, the present invention has the following beneficial effects:

[0037] (1) The present invention provides an automatic venting device for use in ventilated pipelines and its assembly and use method. Through the design of the venting structure, the venting process can be completed by itself using only the principle of communicating vessels without external force. It has high reliability and does not require additional auxiliary devices. It is simple, practical and flexible in layout.

[0038] (2) The present invention provides an automatic venting device for use in ventilated pipelines and its assembly and usage method. Through the design of manual switching valve or solenoid valve, as well as blind flange and discharge valve, the inner wall of the pipeline can be easily cleaned and unblocked, effectively maintaining the unblocking of the ventilated pipeline and avoiding the increase of ventilation resistance.

[0039] (3) The present invention provides an automatic venting device for use in venting pipelines and its assembly and use method, which can modify existing venting pipelines and is applicable to the venting of venting pipes in various compartments, especially for the venting of venting pipes in oil tanks. It can greatly reduce the risk of external pollution in oil tanks and directly ensure the quality of oil in oil tanks.

[0040] (4) The present invention provides an automatic discharge device for use in ventilated pipelines and its assembly and use method. Through the design of liquid level sensor and control system, it can save labor costs and ensure that the discharge pipe is always in a water-sealed state, thus ensuring the reliability of the ventilated pipe discharge device. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of an existing ventilated pipe structure.

[0042] Figure 2 This is a schematic diagram of an automatic venting device for use in ventilated pipelines according to the present invention.

[0043] Figure 3 This is a schematic diagram of the structure of an automatic venting device applied to a ventilated pipeline and its assembly and usage method according to the present invention.

[0044] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Drain pipe; 21. Manual switch valve; 22. Solenoid valve; 3. Blind flange; 4. Drain funnel; 5. Drain straight pipe; 6. Water seal pipe; 7. Overflow pipe; 8. Water seal height; 9. Liquid level sensor; 10. Controller; 11. Vent pipe; 12. First elbow; 13. Second elbow; 14. Chamber; 15. Vent cap; 16. Drain valve; 17. Connecting hose; 18. Water injection pipeline. Detailed Implementation

[0045] To better understand the purpose, structure, and function of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0046] In the description of this invention, it should be noted that the positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the positional relationships shown in the accompanying drawings and are only for the purpose of facilitating the description of the embodiments of this invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore should not be construed as a limitation of this invention.

[0047] Example 1

[0048] like Figure 2 As shown, this embodiment provides an automatic venting device for use in a venting pipeline. The venting pipeline includes a Z-shaped venting pipe 11. The top end of the venting pipe 11 is connected to a venting cap 15, and the bottom end of the venting pipe 11 is connected to a chamber 14. The chamber 14 is provided with a venting funnel 4. The bend near the top end of the venting pipe 11 is a first bend 12, and the bend near the bottom end of the venting pipe 11 is a second bend 13.

[0049] The automatic discharge device includes a discharge pipe 1, a blind flange 3 for providing a cleaning inlet, and a manual on / off valve 21 for injecting water for water seal or cleaning gas.

[0050] The top end of the discharge pipe 1 is connected to the lowest point of the first bend 12 of the vent pipe 11. The end end of the discharge pipe 1 is located directly above the discharge funnel 4. The discharge pipe 1 is equipped with a water seal structure, which consists of a discharge straight pipe 5, a water seal pipe 6, and an overflow pipe 7 connected sequentially from right to left.

[0051] The top end of the vent pipe 5 connects to the vent pipe 11 at the first bend 12. A blind flange 3 is detachably installed at the end of the vent pipe 5 for routine sealing to prevent leakage. It can also serve as a cleaning inlet when the pipe needs cleaning. A drain valve 16 is also installed near the blind flange 3. The drain valve 16 can be detachably connected to the connector hose 17.

[0052] The water seal pipe 6 is L-shaped. The end port of the water seal pipe 6 is connected to the lower end of the discharge straight pipe 5 through the first interface. The top port of the water seal pipe 6 is detachably connected to the manual switch valve 21. The manual switch valve 21 includes, but is not limited to, ball valves and shut-off valves. In this embodiment, a ball valve is used.

[0053] The overflow pipe 7 is inverted L-shaped. The top end of the overflow pipe 7 is connected to the upper end of the water seal pipe 6 through the second interface, and the end of the overflow pipe 7 is located above the discharge funnel 4.

[0054] The lowest point of the second interface is higher than the highest point of the first interface, that is, the connection between the overflow pipe 7 and the water seal pipe 6 is higher than the connection between the water seal pipe 6 and the discharge straight pipe 5, so that the liquid above the lowest point of the second interface automatically flows into the discharge funnel 4 through the overflow pipe 7. The lowest point of the connection between the overflow pipe 7 and the water seal pipe 6 is the water seal height 8.

[0055] At the same time, the inner wall of the discharge pipe 1 is subjected to corrosion-resistant galvanizing treatment. For ease of construction, the inner wall of the pipe below the predetermined water seal height 8 can also be galvanized only.

[0056] Example 2

[0057] like Figure 3 As shown, this embodiment provides another automatic venting device for use in a venting pipeline. The venting pipeline includes a Z-shaped venting pipe 11. The top end of the venting pipe 11 is connected to a venting cap 15, and the bottom end of the venting pipe 11 is connected to a compartment 14. The compartment 14 is provided with a venting funnel 4. The bend near the top end of the venting pipe 11 is a first bend 12, and the bend near the bottom end of the venting pipe 11 is a second bend 13.

[0058] The automatic discharge device includes a discharge pipe 1 with a water seal structure, a blind flange 3 for providing a clean inlet, a solenoid valve 22 for connecting to a water injection pipeline 18, a liquid level sensor 9 for monitoring the liquid level inside the water seal structure, and a control system.

[0059] The top end of the discharge pipe 1 is connected to the lowest point of the first bend 12 of the vent pipe 11. The end end of the discharge pipe 1 is located directly above the discharge funnel 4. The discharge pipe 1 is equipped with a water seal structure, which consists of a discharge straight pipe 5, a water seal pipe 6, and an overflow pipe 7 connected sequentially from right to left.

[0060] The top end of the discharge straight pipe 5 is connected to the vent pipe 11 at the first bend 12. A blind flange 3 is detachably installed at the end of the discharge straight pipe 5 for daily sealing to prevent leakage. It can also serve as a cleaning inlet when the pipe needs cleaning. A drain valve 16 is also installed near the blind flange 3, and the drain valve 16 can be detachably connected to the connector hose 17. The water seal pipe 6 is L-shaped, and its end is connected to the lower end of the discharge straight pipe 5 via a first interface. The top end of the water seal pipe 6 is detachably connected to the manual switch valve 21. The overflow pipe 7 is inverted L-shaped, and its top end is connected to the upper end of the water seal pipe 6 via a second interface. The end of the overflow pipe 7 is located above the discharge funnel 4. The lowest point of the second interface is higher than the highest point of the first interface, that is, the connection between the overflow pipe 7 and the water seal pipe 6 is higher than the connection between the water seal pipe 6 and the discharge straight pipe 5, so that the liquid above the lowest point of the second interface automatically flows into the discharge funnel 4 through the overflow pipe 7. The lowest point of the connection between the overflow pipe 7 and the water seal pipe 6 is the water seal height 8.

[0061] At the same time, the inner wall of the discharge pipe 1 is subjected to corrosion-resistant galvanizing treatment. For ease of construction, the inner wall of the pipe below the predetermined water seal height 8 can also be galvanized.

[0062] The liquid level sensor 9 includes, but is not limited to, a float-type liquid level sensor or an electrode-type liquid level sensor. In this embodiment, a float-type liquid level sensor is used, which is low in cost and easy to install, remove, and maintain. The liquid level sensor 9 is installed on the inner wall of the water seal pipe 6, and is located near the top port of the water seal pipe 6. The liquid level sensor 9 is connected to the control system. The controller 10 in the control system is located on the outer wall of the discharge pipe 1, and the output end of the controller 10 is electrically connected to the solenoid valve 22, ensuring that the measurement signal measured by the liquid level sensor 9 is transmitted to the control system in real time. The control system converts the measurement signal into an action signal, thereby enabling the solenoid valve 22 to automatically open and close according to the liquid level. When the actual liquid level detected by the liquid level sensor 9 is lower than the predetermined water seal height 8, the solenoid valve 22 automatically opens; when the actual liquid level detected by the liquid level sensor 9 reaches the predetermined water seal height 8, the solenoid valve 22 automatically closes; when the actual liquid level exceeds the predetermined water seal height 8, the liquid above the water seal height 8 will automatically flow into the discharge funnel 4 through the end of the overflow pipe 7.

[0063] The controller 10 in this embodiment uses an existing PLC controller. Therefore, the algorithms, computer programs or protocols involved in realizing the function of automatically opening and closing the solenoid valve 22 are all existing technologies and do not involve any program improvements.

[0064] Example 3

[0065] like Figure 2 As shown, this embodiment provides an assembly and usage method for an automatic venting device applied to a venting pipeline according to Embodiment 1. The venting pipeline includes a Z-shaped venting pipe 11. The top end of the venting pipe 11 is connected to a vent cap 15, and the bottom end of the venting pipe 11 is connected to a chamber 14. The chamber 14 is provided with a venting funnel 4 and a water injection pipe 18. The bend near the top end of the venting pipe 11 is a first bend 12, and the bend near the bottom end of the venting pipe 11 is a second bend 13. The assembly and usage method includes the following steps:

[0066] S1. Determine the diameter of the vent pipe 1 based on the evaporation rate and storage medium type of the corresponding compartment 14 of the vent pipe 11:

[0067] When the vent pipe 11 corresponds to the compartment 14 which is a diesel tank, a fuel oil day tank, or a sedimentation tank, the diameter of the vent pipe 1 used is 65 mm; when the vent pipe 11 corresponds to the compartment 14 which is another compartment 14, the diameter of the vent pipe 1 used is less than 50 mm.

[0068] S2, such as Figure 2 As shown, an automatic venting device is installed on the existing vent pipe 11:

[0069] Starting from the second bend of the vent pipe 11, install and connect the discharge straight pipe 5, the L-shaped water seal pipe 6, and the inverted L-shaped overflow pipe 7 sequentially downwards. The connection point between the overflow pipe 7 and the water seal pipe 6 is higher than the connection point between the water seal pipe 6 and the discharge straight pipe 5. The end port of the overflow pipe 7 is located above the inlet of the discharge funnel 4. Then, the blind flange 3 is detachably installed at the end port of the discharge straight pipe 5. The blind flange 3 can be used for daily pipe closure to prevent leakage of water seal water, and can also be used for periodic discharge of residual liquid in the pipe and to provide an inlet for cleaning the pipe. A discharge valve 16 with a detachable connection hose 17 is also installed on the discharge pipe 1 near the blind flange 3. Finally, a manual switch valve 21 is installed at the top port of the water seal pipe 6 for connecting to the water injection pipe 18 to inject water seal water. When it is necessary to purge and clean the pipe, a compressed air or steam system can also be connected to inject compressed air or steam.

[0070] S3. Water is continuously injected into the discharge pipe 1 through the manual switch valve 21 to form a water seal:

[0071] Connect the manual switch valve 21 to the water injection line 18 through the connector hose 17. Open the manual switch valve 21 to inject water into the vent pipe 1 until water is observed leaking from the end port of the overflow pipe 7, forming a water seal in the vent pipe 1. The liquid level at this time is the water seal height 8, which is level with the lowest point of the connection between the overflow pipe 7 and the water seal pipe 6. Close the manual switch valve 21 and remove the connector hose 17. Condensed water and condensed oil from the compartment 14 in the vent pipe 11 continuously enter the vent straight pipe 5 and continuously accumulate at the end of the vent straight pipe 5. When the liquid level in the vent straight pipe 5 is higher than the water seal height 8, the liquid above the water seal height 8 will be automatically discharged and flow into the vent funnel 4 through the end of the overflow pipe 7.

[0072] S4. After each voyage, check the water seal status in the drain pipe 1 and replenish the water accordingly:

[0073] Open the manual switch valve 21, visually inspect the liquid level using the illumination reflection, and check if the water seal is normal. When there is no liquid reflection in the pipeline where the manual switch valve 21 is located, repeat step S3 to replenish water to the drain pipe 1.

[0074] S5. When the compartment 14 connected to the vent pipe 1 through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe 1:

[0075] Connect the drain valve 16 to the drain funnel 4 via the connector hose 17, open the drain valve 16 to drain the liquid in the drain pipe 1, then remove the blind flange 3, drain the residual liquid in the drain pipe 1 through the blind flange 3, and then reset the blind flange. Temporarily seal the end port of the drain pipe 1 with a wooden plug, open the manual switch valve 21 and connect compressed air or steam through the manual switch valve 21 to clear and clean the inner wall of the drain pipe 1.

[0076] Example 4

[0077] like Figure 3 As shown, this embodiment provides an assembly and usage method for an automatic venting device applied to a venting pipeline as described in Embodiment 2. The venting pipeline includes a Z-shaped venting pipe 11. The top end of the venting pipe 11 is connected to a vent cap 15, and the bottom end of the venting pipe 11 is connected to a chamber 14. The chamber 14 is equipped with a venting funnel 4 and a water injection pipe 18. The bend near the top end of the venting pipe 11 is a first bend 12, and the bend near the bottom end of the venting pipe 11 is a second bend 13. The assembly and usage method includes the following steps:

[0078] S1. Determine the diameter of the vent pipe 1 based on the evaporation rate and storage medium type of the corresponding compartment 14 of the vent pipe 11:

[0079] When the vent pipe 11 corresponds to the compartment 14 which is a diesel tank, a fuel oil day tank, or a sedimentation tank, the diameter of the vent pipe 1 used is 65 mm; when the vent pipe 11 corresponds to the compartment 14 which is another compartment 14, the diameter of the vent pipe 1 used is less than 50 mm.

[0080] S2, such as Figure 2 and Figure 3 As shown, an automatic venting device is installed on the existing vent pipe 11:

[0081] Starting from the second bend of the vent pipe 11, the following components are installed sequentially and connected: a discharge straight pipe 5, a positive L-shaped water seal pipe 6, and an inverted L-shaped overflow pipe 7. The connection point between the overflow pipe 7 and the water seal pipe 6 is higher than the connection point between the water seal pipe 6 and the discharge straight pipe 5. The end port of the overflow pipe 7 is located above the inlet of the discharge funnel 4. Then, a blind flange 3 is detachably installed at the end port of the discharge straight pipe 5. The blind flange 3 can be used for daily pipe closure to prevent leakage of water seal water, and can also be used for periodic discharge of residual liquid in the pipe and to provide an inlet for cleaning the pipe. A discharge valve 16 with a detachable connecting hose 17 is also installed on the discharge pipe 1 near the blind flange 3. Finally, a solenoid valve 22 is installed at the top port of the water seal pipe 6 to connect to the water injection pipe 18 to inject water seal water. When it is necessary to purge and clean the pipe, a compressed air or steam system can also be connected to inject compressed air or steam.

[0082] S3. Install a liquid level sensor 9 inside the drain pipe 1 to ensure automatic replenishment of the water seal.

[0083] The liquid level sensor 9 is installed above the highest liquid level of the water seal structure and kept vertical. The signal of the liquid level sensor 9 is connected to the control system, and the control system is electrically connected to the solenoid valve 22. At the same time, the solenoid valve 22 is connected to the water injection pipe 18. The predetermined water seal height 8 is set, and an energization test is performed to ensure that when the actual liquid level detected by the liquid level sensor 9 is lower than the predetermined water seal height 8, the control system controls the solenoid valve 22 to open automatically, so that water in the water injection pipe 18 continuously enters the drain pipe 1. When the actual liquid level detected by the liquid level sensor 9 reaches the predetermined water seal height 8, the control system controls the solenoid valve 22 to close automatically. At this time, if water is observed flowing from the drain pipe 1 into the drain funnel 4, the set value of the predetermined water seal height 8 is adjusted and lowered. When the actual liquid level exceeds the predetermined water seal height 8 due to the continuous accumulation of condensate and oil in the vent pipe 1 in the drain pipe 1, the liquid above the water seal height 8 will automatically flow into the drain funnel 4 through the end of the drain pipe 1.

[0084] S4. When the compartment 14 connected to the vent pipe 1 through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe 1:

[0085] Connect the drain valve 16 to the drain funnel 4 via the hose 17. Open the drain valve 16 to drain the liquid in the drain pipe 1. Then remove the blind flange 3, drain the residual liquid in the drain pipe 1 through the blind flange 3, and then reset the blind flange 3. At the same time, temporarily seal the end port of the drain pipe 1 with a wooden plug and remove the liquid level sensor 9 to prevent damage to it. Open the solenoid valve 22 and connect compressed air or steam through the solenoid valve 22 to clear and clean the inner wall of the drain pipe 1.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this invention.

Claims

1. An automatic venting device for use in ventilated pipelines, characterized in that, Includes a drain pipe (1), a blind flange (3) for providing a clean inlet, and a manual on / off valve (21) for injecting water for water seal or cleaning gas; The top end of the discharge pipe (1) is connected to the vent pipe (11), and the bottom end of the discharge pipe (1) is located directly above the discharge funnel (4). The discharge pipe (1) is equipped with a water seal structure, which consists of a discharge straight pipe (5), a water seal pipe (6), and an overflow pipe (7) connected sequentially from right to left. This ensures that the connection between the overflow pipe (7) and the water seal pipe (6) is higher than the connection between the water seal pipe (6) and the discharge straight pipe (5), and is higher than the overflow pipe. (7) The liquid at the lowest point of the connection between the overflow pipe (7) and the water seal pipe (6) automatically flows into the discharge funnel (4) through the overflow pipe (7). The lowest point of the connection between the overflow pipe (7) and the water seal pipe (6) is the water seal height (8). The blind flange (3) is detachably installed at the end port of the discharge straight pipe (5). The manual switch valve (21) is detachably installed at the top port of the water seal pipe (6). The manual switch valve (21) includes a ball valve and a stop valve. The specific structure of the discharge pipe (1) is as follows: the top end of the discharge straight pipe (5) is connected to the vent pipe (11) at the first bend (12), the end end of the water seal pipe (6) is connected to the lower end of the discharge straight pipe (5) through the first interface, the top end of the overflow pipe (7) is connected to the upper end of the water seal pipe (6) through the second interface, the end end of the overflow pipe (7) extends to the discharge funnel (4), the lowest point of the second interface is higher than the highest point of the first interface, so that the liquid above the lowest point of the second interface automatically flows into the discharge funnel (4) through the overflow pipe (7).

2. The automatic venting device for use in ventilated pipelines according to claim 1, characterized in that, The drain straight pipe (5) is also provided with a drain valve (16) for cleaning the liquid in the drain pipe. The drain valve (16) is located near the blind flange (3). The drain valve (16) and the connector hose (17) are detachably connected.

3. The automatic venting device for use in ventilated pipelines according to claim 1, characterized in that, The manual switch valve (21) can be replaced by a solenoid valve (22). The device also includes a level sensor (9) for monitoring the liquid level in the water seal structure and a control system. The level sensor (9) is installed on the inner wall of the water seal pipe (6) and is located near the top port of the water seal pipe (6). The level sensor (9) is connected to the control system via signal, and the control system is electrically connected to the solenoid valve (22) to ensure that the measurement signal measured by the level sensor (9) is transmitted to the control system in real time and controlled by the control system. The system converts the measurement signal into an action signal, which enables the solenoid valve (22) to open and close automatically according to the liquid level. When the actual liquid level detected by the liquid level sensor (9) is lower than the predetermined water seal height (8), the solenoid valve (22) opens automatically; when the actual liquid level detected by the liquid level sensor (9) reaches the predetermined water seal height (8), the solenoid valve (22) closes automatically; when the actual liquid level exceeds the predetermined water seal height (8), the liquid above the water seal height (8) will automatically flow into the discharge funnel (4) through the end of the overflow pipe (7).

4. The automatic venting device for use in a ventilated pipeline according to any one of claims 1-3, characterized in that, The inner wall of the discharge pipe (1) below the predetermined water seal height (8) is subjected to corrosion-resistant galvanizing treatment.

5. A method for assembling and using an automatic venting device for ventilated pipelines, comprising the automatic venting device for ventilated pipelines as described in any one of claims 1-2, characterized in that, Includes the following steps: S1. Determine the diameter of the vent pipe (1) based on the evaporation rate and storage medium type of the corresponding compartment (14) of the vent pipe (11): When the vent pipe (11) corresponds to the compartment (14) which is a diesel tank, a fuel day tank, or a sedimentation tank, the diameter of the vent pipe (1) used is 65 mm; when the vent pipe (11) corresponds to the compartment (14) which is another compartment (14), the diameter of the vent pipe (1) used is less than 50 mm. S2. Install an automatic venting device on the existing vent pipe (11): A vent pipe (1) with a water seal structure is installed at the lowest point of the vent pipe. The end of the vent pipe (1) is connected to the top of the vent funnel (4) of the compartment (14). A manual switch valve (21) for injecting water seal water or cleaning gas is installed on the vent pipe (1). The manual switch valve (21) is located at the highest turning point of the water seal structure. At the same time, a detachable blind flange (3) is installed on the vent pipe (1). The blind flange (3) is located at the lowest point of the water seal structure where water is to be stored. S3. Water is continuously injected into the drain pipe (1) through the manual switch valve (21) to form a water seal: Connect the manual switch valve (21) to the water injection pipe (18) through the connector hose (17), open the manual switch valve (21) to inject water into the drain pipe (1) until water is observed to leak from the end port of the drain pipe (1), and a water seal is formed in the drain pipe (1). The liquid level at this time is the water seal height (8). Close the manual switch valve (21) and remove the connector hose (17). Condensed water and condensed oil in the vent pipe (11) enter the drain pipe (1) from the lowest point of the vent pipe and continue to accumulate in the drain pipe (1). When the liquid level is higher than the water seal height (8), the liquid higher than the water seal height (8) will automatically flow into the drain funnel (4) through the end of the drain pipe (1). S4. After each voyage, check the water seal status in the drain pipe (1) and replenish the water supply: Open the manual switch valve (21), visually inspect the liquid level by reflecting the light, and check if the water seal is normal. When there is no liquid reflection in the vertical pipe where the manual switch valve (21) is located, repeat step S3 to replenish water to the drain pipe (1). S5. When the compartment (14) connected to the vent pipe (1) through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe (1): Remove the blind flange (3), drain the residual liquid in the drain pipe (1) through the blind flange (3), reinstall it, temporarily seal the end port of the drain pipe (1) with a wooden plug, open the manual switch valve (21) and connect compressed air or steam through the manual switch valve (21) to clear and clean the inner wall of the drain pipe (1).

6. The assembly and use method of the automatic venting device applied to a ventilated pipeline according to claim 5, characterized in that, The specific steps for installing the automatic discharge device in step S2 include: installing and connecting the discharge straight pipe (5), the L-shaped water seal pipe (6), and the inverted L-shaped overflow pipe (7) sequentially from the second bend of the vent pipe (11) downwards. The connection between the overflow pipe (7) and the water seal pipe (6) is higher than the connection between the water seal pipe (6) and the discharge straight pipe (5). The end port of the overflow pipe (7) is located above the discharge funnel (4). Then, the blind flange (3) is detachably installed at the end port of the discharge straight pipe (5). The blind flange (3) can be used to close the pipe daily to prevent water seal water leakage, and can also be used to periodically discharge residual liquid in the pipe and provide an inlet for cleaning the pipe. Finally, the manual switch valve (21) is installed at the top port of the water seal pipe (6) and connected to the engine room water supply line for injecting water seal water. When it is necessary to purge and clean the pipe, it can also be connected to a compressed air or steam system for injecting compressed air or steam.

7. The assembly and use method of the automatic venting device applied to a ventilated pipeline according to claim 5, characterized in that, In step S2, a drain valve (16) with a detachable connecting hose (17) is installed on the drain pipe (1) near the blind flange (3). In step S5, before removing the blind flange (3), the drain valve (16) is connected to the drain funnel (4) through the connecting hose (17), and the drain valve (16) is opened to drain the liquid in the drain pipe (1).

8. A method for assembling and using an automatic venting device for a ventilated pipeline, comprising the automatic venting device for a ventilated pipeline as described in claim 3, characterized in that... Includes the following steps: S1. Determine the diameter of the vent pipe (1) based on the evaporation rate and storage medium type of the corresponding compartment (14) of the vent pipe (11): When the vent pipe (11) corresponds to the compartment (14) which is a diesel tank, a fuel day tank, or a sedimentation tank, the diameter of the vent pipe (1) used is 65 mm; when the vent pipe (11) corresponds to the compartment (14) which is another compartment (14), the diameter of the vent pipe (1) used is less than 50 mm. S2. Install an automatic venting device on the existing vent pipe (11): A vent pipe (1) with a water seal structure is installed at the lowest point of the vent pipe. The end of the vent pipe (1) is connected to the top of the vent funnel (4) of the compartment (14). A solenoid valve (22) for injecting water for water seal or cleaning gas is installed on the vent pipe (1). The solenoid valve (22) is located at the highest turning point of the water seal structure. At the same time, a detachable blind flange (3) is installed on the vent pipe (1). The blind flange (3) is located at the lowest point of the water seal structure where water is to be stored. S3. Install a liquid level sensor (9) inside the drain pipe (1) to ensure automatic replenishment of the water seal: Install the level sensor (9) above the predetermined highest liquid level of the water seal structure and keep the level sensor (9) vertical. Connect the signal of the level sensor (9) to the input terminal of the control system and electrically connect the output terminal of the control system to the solenoid valve (22). At the same time, connect the solenoid valve (22) to the water injection pipeline (18), set the predetermined water seal height (8), and perform an energization test to ensure that when the actual liquid level detected by the level sensor (9) is lower than the predetermined water seal height (8), the control system controls the solenoid valve (22) to open automatically, allowing the water injection pipeline (18) to open. 8) Water continuously enters the drain pipe (1); when the actual liquid level detected by the liquid level sensor (9) reaches the predetermined water seal height (8), the control system controls the solenoid valve (22) to close automatically. At this time, if water is observed flowing from the drain pipe (1) into the drain funnel (4), the set value of the predetermined water seal height (8) is adjusted to be lowered; when the actual liquid level exceeds the predetermined water seal height (8) due to the continuous accumulation of condensate and oil in the vent pipe (11) in the drain pipe (1), the liquid above the water seal height (8) will automatically flow into the drain funnel (4) through the end of the drain pipe (1); S4. When the compartment (14) connected to the vent pipe (1) through the vent pipe is empty, perform residual discharge and cleaning work on the vent pipe (1): Remove the blind flange (3), drain the residual liquid in the drain pipe (1) through the blind flange (3), and then reset the blind flange (3). At the same time, temporarily seal the end port of the drain pipe (1) with a wooden plug, remove the liquid level sensor (9), open the solenoid valve (22), and connect compressed air or steam through the solenoid valve (22) to clear and clean the inner wall of the drain pipe (1).

9. The assembly and use method of the automatic venting device applied to a ventilated pipeline according to claim 8, characterized in that, In step S2, a drain valve (16) with a detachable connecting hose (17) is installed on the drain pipe (1) near the blind flange (3). In step S4, before removing the blind flange (3), the drain valve (16) is connected to the drain funnel (4) through the connecting hose (17), and the drain valve (16) is opened to drain the liquid in the drain pipe (1).

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