Comprehensive integrated monitoring bilge water purification system for ship

Abstract

The invention relates to the technical field of ship bilge water purification, in particular to a comprehensive integrated monitoring bilge water purification system for a ship. The bilge water adjusting device is matched with the bilge oil sewage treatment device, the advanced bilge oil sewage treatment technology is combined, the liquid level sensor is used for monitoring the liquid level in each sewage well in real time, and the opening and closing of the electro-hydraulic valve on the bilge water adjusting system pipeline are controlled, so that the comprehensive integrated monitoring of the bilge water purification system under each working condition is realized; the ship bilge water can be efficiently treated and monitored in real time, so that the ship navigation safety is ensured, and the environmental protection requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of ship bilge water purification, and in particular to a ship bilge water purification system with comprehensive integrated monitoring. Background Art

[0002] During the normal operation of the ship, bilge water is accumulated in the bilge due to the leakage of engine room equipment, leakage of various pipelines, flushing water, infiltration of loose hull joints, rainwater flowing in from doors, windows and hatches, and drainage from decks or cabins near the waterline. Bilge water is corrosive to the hull, and bilge water in the engine room can cause electromechanical equipment to become damp or flooded, affecting the normal operation of the machine and bringing difficulties to management. Damage to the engine room or other cabins due to special reasons can cause a lot of flooding. When too much bilge water accumulates, it will affect the stability of the ship and endanger navigation safety. Therefore, the bilge water must be discharged and treated in a timely manner during the navigation of the ship.

[0003] In the prior art, accumulated water in the bilge of a ship usually needs to be handled manually. The control of the suction pump needs to be manually controlled, which is cumbersome to operate. In addition, sometimes the situation of water accumulation in the bilge is uncertain, and it is necessary to go down to the bilge to observe. The suction work is not started until water accumulation is found in the bilge. At the same time, it is not certain whether the accumulated water has been sucked out after the accumulated water is pumped out, and water may still remain in the bilge.

[0004] Previously, most ships were equipped with oil-water separators that used the principle of coarsening oil droplets, i.e. the “gravity-coagulation separation” process, to separate oil and water. This process could separate particulate oil and treat it to below 15 mg / L, meeting the early requirements of Annex I of MARPOL 73 / 78 and the relevant provisions of GJB 4000-2000 (i.e. the oil content of treated oily wastewater should be ≤ 15 mg / L). However, due to the lack of processing capacity for emulsified oil, it could not meet the emission requirements specified in the latest MEPC 107 (49) of MARPOL 73 / 78.

[0005] With the release of new requirements for oily wastewater treatment by the IMO in 2011, domestic and foreign ships have been equipped with oily wastewater separation devices that meet the new standards. Most of the new oily wastewater treatment devices adopt a combination of primary gravity separation and secondary activated carbon filtration and adsorption. According to the effluent quality, they can automatically switch between "primary treatment only" and "primary and secondary combined treatment". The effluent quality is stable and the treated water quality can meet the relevant requirements of the new specification MEPC.107(49).

[0006] Therefore, combining advanced bilge oily wastewater treatment technology to invent a ship bilge water purification system that can efficiently treat and monitor bilge water is of great significance for ensuring ship safety and marine environmental protection. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a bilge water purification system with comprehensive integrated monitoring for ships, which can process and monitor the bilge water of ships in real time and efficiently to ensure the safety of ship navigation and meet environmental protection requirements.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A bilge water purification system with comprehensive integrated monitoring for ships, comprising a bilge water transfer device and two bilge oily sewage treatment devices;

[0010] The bilge water regulating and barging device comprises a front bilge water regulating and barging control box and a rear bilge water regulating and barging control box, wherein the front bilge water regulating and barging control box is connected to a level gauge in a front / middle bilge water accumulation compartment, a front / middle drain pump control box, and a front / middle bilge pipeline electro-hydraulic valve; the rear bilge water regulating and barging control box is connected to a level gauge in a rear bilge water accumulation compartment, a rear drain pump control box, and a rear bilge pipeline electro-hydraulic valve;

[0011] The front / middle / rear drain pump control boxes are respectively connected to the drain pumps at the front / middle / rear bilge of the ship;

[0012] The front bilge water transfer control box and the rear bilge water transfer control box are both provided with three working states: "local manual mode", "local automatic mode" and "remote control mode";

[0013] The two sets of bilge oily water treatment devices are specifically divided into a front bilge oily water treatment device and a rear bilge oily water treatment device, and the electric control boxes of the front bilge oily water treatment device and the rear bilge oily water treatment device are respectively connected to the front bilge water regulating and barge control box and the rear bilge water regulating and barge control box.

[0014] Preferably, the bilge oily wastewater treatment device comprises: a primary separation component, a secondary fiber filter, a tertiary ultrafiltration membrane group, an electric control box, a process pump, an oil concentration meter and a control valve;

[0015] The primary separation component is used to separate oil from water in oily wastewater;

[0016] The secondary fiber filter is used to filter the oily wastewater separated by the primary separation component;

[0017] The three-stage ultrafiltration membrane group is used to further perform osmotic separation treatment on unqualified water after filtration treatment by the two-stage fiber filter.

[0018] Preferably, the electric control box is used to receive control instructions sent by the corresponding bilge water transfer control box, and control the primary separation component, the secondary fiber filter, the tertiary ultrafiltration membrane group and the process pump to perform corresponding actions;

[0019] The process pump is used to pump the bilge water into the primary separation component for initial separation and then send it into the secondary fiber filter for filtration treatment;

[0020] The oil concentration meter is used for automatically sampling and monitoring the oil content in the discharge liquid. If the oil content in the discharge liquid exceeds the preset oil content value, the oil concentration meter will sound an alarm and control the corresponding pipeline to return unqualified water to the bottom of the bilge. If the oil content in the discharge liquid is lower than the preset oil content value, the corresponding pipeline will be controlled to discharge qualified water overboard.

[0021] Preferably, the control valve component includes: a pressure controller and a temperature controller;

[0022] The pressure controller is used to detect the vacuum pressure in the primary separation component in real time to control the operating parameters of the process pump;

[0023] The temperature controller is used to detect the temperature signal of the oily wastewater in the pipeline in real time to control the start and stop of the steam heating pipe and the electric heater in the first-stage separation component.

[0024] Preferably, the bilge water regulating barge control box obtains the liquid level information in the bilge water compartment in real time through a liquid level gauge, and sends corresponding control signals to the bilge oily wastewater treatment device, the drain pump control box, and the bilge pipeline electro-hydraulic valve, while feeding back the status information and alarm signals of each device to the comprehensive anti-pollution monitoring system in real time.

[0025] Preferably, the bilge water transfer control box:

[0026] When in "local manual mode", the switch control of each electro-hydraulic valve and the start and stop control of the drain pump can be carried out manually;

[0027] When in the "local automatic mode", the two working modes of "in-ship transfer mode" or "out-ship shore transfer mode" can be further selected on the bilge water transfer control box;

[0028] The "onboard transfer mode" is used to control the corresponding electro-hydraulic valve and drain pump to transfer the oily sewage in the bilge water compartment to the ship's bilge oily sewage collection tank;

[0029] The "overboard shore transfer mode" is used to control the action of the corresponding electro-hydraulic valves and drain pumps, so that the oily sewage in the bilge water compartment is treated by the corresponding bilge oily sewage treatment device and then discharged to the overboard or shore connection pipeline.

[0030] Preferably, when the bilge water transfer control box is in the "remote control mode", the default state is the "in-ship transfer mode", and the working condition command sent by the anti-pollution integrated monitoring system is received in real time:

[0031] When receiving the "shore transfer" command, the bilge water transfer control box automatically switches to the "off-board shore transfer mode";

[0032] When receiving the "zero discharge" command, the bilge water transfer control box automatically switches to the "in-ship transfer mode", and when the liquid level alarm of the ship's bilge oily sewage collection tank is triggered, the oily sewage is automatically transferred to the spare oily sewage collection tank in the ship;

[0033] When receiving the "limited discharge" command, the bilge water transfer control box alternately executes the "off-board shore transfer mode" and the "in-ship transfer mode" at preset time intervals;

[0034] When receiving the "isolation valve close" command, the bilge water transfer control box automatically closes the electro-hydraulic isolation valve located on the main transverse bulkhead.

[0035] Preferably, the bilge water regulating and transferring device is provided with a mutual calling function of a front bilge water regulating and transferring control box and a rear bilge water regulating and transferring control box, and mutual standby transfer of the front / middle / rear bilge water pumps is performed by controlling the corresponding front / middle / rear bilge pipeline electro-hydraulic valves.

[0036] Preferably, when the bilge oily wastewater treatment device is in operation, the oily wastewater is sucked into the primary separation component by a process pump for initial separation, and then sent to a secondary fiber filter for filtration treatment;

[0037] A negative pressure state is maintained inside the primary separation component, and the vacuum pressure value inside the primary separation component is monitored in real time through a vacuum pressure gauge on the instrument panel.

[0038] Preferably, the effluent after being filtered by the secondary fiber filter: if the oil concentration reaches the discharge standard, it is discharged overboard after passing through a flow meter; if the oil concentration exceeds the standard, it is transferred to the tertiary ultrafiltration membrane group for further osmotic separation treatment;

[0039] If the oil concentration of the effluent treated by the three-stage ultrafiltration membrane group reaches the discharge standard, it will be discharged overboard after passing through a flow meter; if the oil concentration still exceeds the standard, it will be transferred to the ship's bilge oil and sewage collection tank.

[0040] Compared with the prior art, the present invention has the following main advantages:

[0041] 1. The present invention cooperates with the bilge water regulating device and the bilge oily sewage treatment device, combines the advanced bilge oily sewage treatment technology, uses the liquid level sensor to monitor the liquid level in each sewage well in real time, and controls the opening and closing of the electro-hydraulic valve on the bilge water regulating system pipeline to realize the comprehensive integrated monitoring of the bilge water purification system under various working conditions, and can process and monitor the ship's bilge water in real time and efficiently, so as to ensure the safety of the ship's navigation and meet the environmental protection requirements;

[0042] 2. The oily wastewater separation device of the present invention adopts a combined oily wastewater treatment process of a primary separation component, a secondary fiber filter, and a tertiary ultrafiltration membrane group, and cooperates with a process pump, an oil concentration meter, and a control valve. The effluent quality is stable, and the treated water quality can meet the environmental protection requirements of relevant specifications;

[0043] 3. The present invention realizes comprehensive integrated monitoring of the bilge water purification system under the working conditions of "off-ship shore transfer", "on-ship transfer-zero emission" and "on-ship transfer-limited emission" by manually or automatically controlling the opening and closing of each electro-hydraulic valve on the bilge water transfer system pipeline in the three modes of "local manual", "local automatic" and "remote control" according to the liquid level information in each bilge water compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a system principle diagram of a bilge water purification system for ships with comprehensive integrated monitoring in an embodiment of the present invention;

[0045] Figure 2 This is a working principle diagram of a bilge oily wastewater treatment device in an embodiment of the present invention;

[0046] Figure 3 Flow chart of the system control work in the embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0049] like Figures 1-2As shown, this embodiment provides a bilge water purification system for ships with comprehensive integrated monitoring, including a bilge water transfer device and two bilge oily sewage treatment devices;

[0050] The bilge water transfer device comprises components such as a front / rear bilge water transfer control box, a drain pump, an electro-hydraulic valve, and a liquid level gauge.

[0051] The electro-hydraulic valve is a switch-type actuator, comprising a micro-power unit, a hydraulic actuator, an emergency joint, a manual mechanism, a butterfly valve and a limit mechanism.

[0052] The liquid level meter in this embodiment is a liquid level sensor, which is divided into a radar liquid level sensor and a piezoresistive liquid level sensor.

[0053] The bilge oily wastewater treatment device mainly includes a primary separation component, a secondary separation component (including a tertiary membrane group), an electric control box, a process pump, an oil concentration meter, a control valve, a pre-filter, etc.

[0054] The control valve components mainly include a pressure controller and a temperature controller.

[0055] Furthermore, the liquid level gauge can feed back the liquid level signals of the front bilge water compartment, the middle bilge water compartment, the sewage wells of the three rear bilge water compartments, the oily sewage tank, and the petroleum product collection cabinet to the bilge water transfer control box;

[0056] Furthermore, the electro-hydraulic valve is mainly used to control the on-off of the pipeline of the bilge water transfer system, and its limit switch can feedback the valve opening and closing signal to the bilge water transfer control box. In the emergency state of the electro-hydraulic valve, an emergency hand pump can be used to open and close the valve.

[0057] Furthermore, the drain pumps are respectively installed at the front, rear and middle of the ship, and the start and stop are controlled by a drain pump control box (also called a drain pump starting box), which is mainly used to transport and transfer bilge water containing oil and impurities.

[0058] Furthermore, the bilge water transfer control box can receive the local / remote status signal, start / stop status signal, and alarm signal of the associated drain pump control box; can receive the working condition selection command and emergency shutdown command of the anti-pollution integrated monitoring system. It can transmit the middle and low level information of the oily wastewater tank and the prohibition / permission signal of the oily wastewater treatment device to the oily wastewater treatment device; transmit the start and stop control command of the water pump to the drain pump control box; transmit the valve switch control command to the electro-hydraulic valve; and transmit the necessary status signal and alarm signal to the anti-pollution integrated monitoring system.

[0059] Furthermore, the bilge water regulating barge control box has a control interface using a MIMIC board + display, is provided with corresponding illuminated buttons, has corresponding alarm indicator lights and buzzers, and has the function of displaying liquid level and tank capacity (providing a tank capacity table overall) information; the bilge water regulating barge control box has start and stop buttons for manually controlling individual electro-hydraulic valves, and displays the open and closed status signals of the electro-hydraulic valves and alarms for opening timeout and closing timeout of the electro-hydraulic valves.

[0060] Furthermore, the bilge water transfer device is divided into three working states, namely: "local manual mode", "local automatic mode" and "remote control mode", and the corresponding operation mode can be selected through the "local manual / local automatic / remote control" mode selection switch set on the bilge water transfer control box:

[0061] When in local manual mode, the switch control of the electro-hydraulic valve and the start and stop control of the drain pump can be realized through manual operation, so as to realize the transfer of oily sewage from the sewage well in the engine room area to the oily sewage tank or the transfer of oily sewage from the oily sewage tank to the shore;

[0062] When in local automatic mode, the bilge water transfer control box can be used to select the two working modes of "onboard transfer" or "offboard shore transfer";

[0063] When the bilge water transfer control box is in remote control mode, the default state is "onboard transfer" mode. After receiving the working condition command from the anti-pollution integrated monitoring system, it will execute according to the command, as follows:

[0064] After receiving the "shore transfer" command, the bilge water transfer control box automatically switches to the "off-board shore transfer" working condition, automatically controls the electro-hydraulic valve and drain pump to realize the shore transfer discharge of oily sewage from the oily sewage tank; after receiving the "zero discharge" command, the bilge water transfer control box automatically switches to the "in-ship transfer" working condition, automatically controls the electro-hydraulic valve and drain pump to realize the transfer of oily sewage from the sewage well at the engine room / shaft to the oily sewage tank, and automatically injects it into the combined bilge water collection tank if the oily sewage tank is full; after receiving the "limited discharge" command, the bilge water transfer control box automatically switches to the "in-ship transfer" working condition, automatically controls the electro-hydraulic valve and drain pump to realize the transfer of oily sewage from the sewage well at the engine room / shaft to the oily sewage tank, and automatically injects it into the combined bilge water collection tank if the oily sewage tank is full; after receiving the "isolation valve closing" command, the bilge water transfer control box automatically closes the electro-hydraulic isolation valve located on the main transverse bulkhead;

[0065] Furthermore, the bilge water regulating device can realize mutual calling of the front bilge water regulating control box and the rear bilge water regulating control box, and the associated bilge drain pump realizes the standby regulating function.

[0066] Furthermore, when the bilge oily sewage treatment device is working, the bilge oily sewage enters the first-level body of the oily sewage treatment device through the sewage inlet on the first-level body (when the process pump is running, the first-level separator is under negative pressure, and the vacuum pressure gauge on the instrument panel monitors the first-level vacuum pressure value. The vacuum negative pressure state inside the first-level separator avoids the agitation and emulsification of the oily bilge water caused by the pressure state, resulting in the phenomenon of difficulty in separation), and the oil-water separation of the oily sewage is achieved through the inclined plate gravity and coagulation separation.

[0067] Furthermore, the electric control box is used to control the operation and stop of the process pump and to realize manual and automatic control of the secondary and tertiary treatments.

[0068] Furthermore, after the discharge liquid of the process pump is adsorbed and filtered by the secondary fiber filter, the oil concentration meter automatically samples and monitors the oil content in the discharge liquid. If the oil concentration of the discharge liquid reaches the discharge standard, it is discharged from the flow meter; if it is found that the oil concentration of the discharge liquid exceeds the standard, the oil concentration meter alarms, and the secondary outlet automatically switches to the tertiary treatment; after the tertiary ultrafiltration membrane osmosis separation treatment, the oil concentration of the discharge liquid reaches the discharge standard and is discharged from the flow meter. If the oil concentration of the discharge liquid exceeds the standard, the oil concentration meter alarms, and the unqualified water is discharged to the bottom of the bilge.

[0069] Furthermore, the pressure controller is used to detect the vacuum pressure in the first-stage barrel and protect the safe operation of the process pump. The vacuum pressure negative pressure range is -0.05Mpa to -0.01Mpa (adjustable, set according to actual working conditions).

[0070] Furthermore, the temperature controller controls the start and stop of the steam heating pipe and the electric heater installed on the primary separator by transmitting the oily wastewater temperature signal in real time (the specific temperature setting range is set according to the actual oil content of the treated oily wastewater).

[0071] like Figure 3 As shown, it is a system control workflow diagram of this embodiment, specifically:

[0072] The front bilge water transfer control box can switch between three modes by operating the "local manual", "local automatic" and "remote control" buttons on the control box panel.

[0073] When the front bilge water transfer control box is switched to "local manual" mode: the corresponding valves can be opened and closed by operating the "open valve" or "close valve" buttons of the YV1~YV23 electro-hydraulic valves on the control box panel; the corresponding drain pumps can be started or stopped by operating the front or middle "drain pump start" or "drain pump stop" buttons on the control box panel;

[0074] When the front bilge water transfer control box is switched to "local automatic" mode, the three working conditions can be switched through the "off-ship shore transfer", "on-ship transfer-zero emission", and "on-ship transfer-limited emission" buttons on the front bilge water transfer control box panel:

[0075] 1) In the simulated "off-board shore transfer" state, the control box receives the liquid level signal in the front bilge water collecting tank, the YV10, YV20, YV21, YV7, YV4, and YV5 electro-hydraulic valves shall be opened, and the middle drain pump shall be started to realize the shore transfer function; when receiving the low liquid level signal in the front bilge water collecting tank, the middle drain pump shall be stopped, and the YV10, YV20, YV21, YV7, YV4, and YV5 electro-hydraulic valves shall be closed;

[0076] 2) Simulate the "onboard transfer-zero emission" state, and the control box sends a "no operation" signal to the electric control box of the front bilge oily sewage treatment device:

[0077] ① When the control box receives the mid-level signal of a sewage well in the forward bilge water storage compartment, the corresponding electro-hydraulic valve shall be opened and the forward drain pump shall be started to realize the shipboard transfer function; when receiving the low-level signal of the sewage well in the forward bilge water storage compartment or the high-level signal of the forward bilge water collection tank, the forward drain pump shall be stopped and the corresponding electro-hydraulic valve shall be closed. (For example: when the bow sewage well in the forward bilge water storage compartment is in the mid-level, the YV1, YV3, YV4, YV7, and YV14 electro-hydraulic valves shall be opened and the forward drain pump shall be started; when the bow sewage well in the forward bilge water storage compartment is in the low level or the forward bilge water collection tank is in the high level, the forward drain pump shall be stopped and the YV1, YV3, YV4, YV7, and YV14 electro-hydraulic valves shall be closed.)

[0078] ② When the control box receives the middle position signal of a sewage well in the middle bilge water storage compartment, the corresponding electro-hydraulic valve shall be opened and the middle drain pump shall be started to realize the shipboard transfer function; when receiving the low position signal of this sewage well in the middle bilge water storage compartment or the high position signal of the front bilge water collection tank, the middle drain pump shall be stopped and the corresponding electro-hydraulic valve shall be closed. (For example: when the bow sewage well in the middle bilge water storage compartment is in the middle position, the YV11, YV20, YV21, and YV14 electro-hydraulic valves shall be opened and the middle drain pump shall be started; when the bow sewage well in the middle bilge water storage compartment is in the low position or the front bilge water collection tank is in the high position, the middle drain pump shall be stopped and the YV11, YV20, YV21, and YV14 electro-hydraulic valves shall be closed.)

[0079] 3) Simulate the "on-board transfer-restricted emission" state. The control box does not send the "prohibited operation" signal to the electric control box of the front bilge oily wastewater treatment device. Other action instructions are the same as the local automatic "on-board transfer-zero emission" state.

[0080] When the forward bilge water transfer control box is switched to "remote control" mode:

[0081] 1) After receiving the "shore transfer" working condition command from the anti-pollution integrated monitoring system, the "off-board shore transfer" light on the front bilge water transfer control box lights up, and its action command is the same as the local automatic "off-board shore transfer".

[0082] 2) After receiving the "zero emission" working condition command from the integrated pollution prevention monitoring system, the "In-ship Transfer-Zero Emission" light on the front bilge water transfer control box lights up, and its action command is the same as the local automatic "In-ship Transfer Zero Emission".

[0083] 3) After receiving the "restricted emission" working condition command from the integrated pollution prevention monitoring system, the "onboard transfer-restricted emission" light on the front bilge water transfer control box lights up, and its action command is the same as the local automatic "onboard transfer-restricted emission".

[0084] 4) After receiving the "start and stop of the oily wastewater treatment device" command from the comprehensive pollution prevention monitoring system, the oily wastewater treatment device should be able to start and stop accordingly.

[0085] 5) After receiving the "isolation valve closed" command from the anti-pollution integrated monitoring system, the forward bilge water transfer control box automatically closes the electro-hydraulic isolation valves located on the main transverse bulkhead: YV8 and YV22.

[0086] The rear bilge water transfer barge control box can switch between three modes by operating the "local manual", "local automatic" and "remote control" buttons on the control box panel.

[0087] When the rear bilge water transfer control box is switched to the "local manual" mode: the corresponding valves can be opened and closed by operating the "open valve" or "close valve" buttons of the YV24~YV40 electro-hydraulic valves on the control box panel; the corresponding drain pumps can be started or stopped by operating the rear "drain pump start" or "drain pump stop" buttons on the control box panel;

[0088] When the rear bilge water transfer control box is switched to "local automatic" mode, the three working conditions can be switched through the "off-ship shore transfer", "on-ship transfer-zero emission", and "on-ship transfer-limited emission" buttons on the rear bilge water transfer control box panel:

[0089] 1) In the simulated "off-board shore transfer" state, the control box receives the liquid level signal in the rear bilge water collection tank, the YV38, YV31, YV29, YV30, YV35, and YV40 electro-hydraulic valves shall be opened, and the rear drain pump shall be started to realize the shore transfer function; when receiving the low liquid level signal in the rear bilge water collection tank, the rear drain pump shall be stopped, and the YV38, YV31, YV29, YV30, YV35, and YV40 electro-hydraulic valves shall be closed;

[0090] 2) Simulate the "onboard transfer-zero emission" state, and the control box sends a "no operation" signal to the rear bilge oily sewage treatment device electric control box:

[0091] ① When the control box receives the signal of the middle position of a sewage well in the rear bilge water storage compartment 1, the corresponding electro-hydraulic valve shall be opened and the rear drain pump shall be started to realize the shipboard transfer function; when receiving the signal of the low position of the sewage well in the rear bilge water storage compartment 1 or the high position of the rear bilge water collection tank, the rear drain pump shall be stopped and the corresponding electro-hydraulic valve shall be closed. (For example: when the bow sewage well of the rear bilge water storage compartment 1 is in the middle position, the YV26, YV29, YV30, YV35, and YV39 electro-hydraulic valves shall be opened and the rear drain pump shall be started. When the bow sewage well of the rear bilge water storage compartment 1 is in the low position or the rear bilge water collection tank is in the high position, the rear drain pump shall be stopped and the YV26, YV29, YV30, YV35, and YV39 electro-hydraulic valves shall be closed.)

[0092] ② When the control box receives the signal of the middle position of a sewage well in the rear bilge water storage compartment 2, the corresponding electro-hydraulic valve shall be opened and the rear drain pump shall be started to realize the shipboard transfer function; when receiving the signal of the low position of the sewage well in the rear bilge water storage compartment 2 or the high position of the rear bilge water collection tank, the rear drain pump shall be stopped and the corresponding electro-hydraulic valve shall be closed. (For example: when the bow sewage well of the rear bilge water storage compartment 2 is in the middle position, the YV32, YV31, YV29, YV30, YV35, and YV39 electro-hydraulic valves shall be opened and the rear drain pump shall be started. When the bow sewage well of the rear bilge water storage compartment 2 is in the low position or the rear bilge water collection tank is in the high position, the rear drain pump shall be stopped and the YV32, YV31, YV29, YV30, YV35, and YV39 electro-hydraulic valves shall be closed.)

[0093] 3) Simulate the "on-board transfer-restricted emission" state. The control box does not send the "prohibited operation" signal to the rear bilge oily wastewater treatment device electric control box. Other action instructions are the same as the local automatic "on-board transfer-zero emission" state.

[0094] When the rear bilge water transfer control box is switched to "remote control" mode:

[0095] 1) After receiving the "shore transfer" working condition command from the anti-pollution integrated monitoring system, the "off-board shore transfer" light on the rear bilge water transfer control box lights up, and its action command is the same as the local automatic "off-board shore transfer".

[0096] 2) After receiving the "zero emission" working condition command from the anti-pollution integrated monitoring system, the "In-ship Transfer-Zero Emission" light on the rear bilge water transfer control box lights up, and its action command is the same as the local automatic "In-ship Transfer Zero Emission".

[0097] 3) After receiving the "restricted emission" working condition command from the integrated pollution prevention monitoring system, the "onboard transfer-restricted emission" light on the rear bilge water transfer control box lights up, and its action command is the same as the local automatic "onboard transfer-restricted emission".

[0098] 4) After receiving the "start and stop of the oily wastewater treatment device" command from the comprehensive pollution prevention monitoring system, the rear oily wastewater treatment device should be able to start and stop accordingly.

[0099] 5) After receiving the "isolation valve closed" command from the anti-pollution integrated monitoring system, the rear bilge water transfer control box automatically closes the electro-hydraulic isolation valves located on the main transverse bulkhead: YV24 and YV31.

[0100] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0101] In summary:

[0102] 1. The present invention cooperates with the bilge water regulating device and the bilge oily sewage treatment device, combines the advanced bilge oily sewage treatment technology, uses the liquid level sensor to monitor the liquid level in each sewage well in real time, and controls the opening and closing of the electro-hydraulic valve on the bilge water regulating system pipeline to realize the comprehensive integrated monitoring of the bilge water purification system under various working conditions, and can process and monitor the ship's bilge water in real time and efficiently, so as to ensure the safety of the ship's navigation and meet the environmental protection requirements;

[0103] 2. The oily wastewater separation device of the present invention adopts a combined oily wastewater treatment process of a primary separation component, a secondary fiber filter, and a tertiary ultrafiltration membrane group, and cooperates with a process pump, an oil concentration meter, and a control valve. The effluent quality is stable, and the treated water quality can meet the environmental protection requirements of relevant specifications;

[0104] 3. The present invention realizes comprehensive integrated monitoring of the bilge water purification system under the working conditions of "off-ship shore transfer", "on-ship transfer-zero emission" and "on-ship transfer-limited emission" by manually or automatically controlling the opening and closing of each electro-hydraulic valve on the bilge water transfer system pipeline in the three modes of "local manual", "local automatic" and "remote control" according to the liquid level information in each bilge water compartment.

[0105] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bilge water purification system with integrated monitoring for ships, characterized in that: It includes one set of bilge water transfer device and two sets of bilge oily sewage treatment devices; The bilge water regulating and barging device comprises a front bilge water regulating and barging control box and a rear bilge water regulating and barging control box, wherein the front bilge water regulating and barging control box is connected to a level gauge in a front / middle bilge water accumulation compartment, a front / middle drain pump control box, and a front / middle bilge pipeline electro-hydraulic valve; the rear bilge water regulating and barging control box is connected to a level gauge in a rear bilge water accumulation compartment, a rear drain pump control box, and a rear bilge pipeline electro-hydraulic valve; The front / middle / rear drain pump control boxes are respectively connected to the drain pumps at the front / middle / rear bilge of the ship; The front bilge water transfer control box and the rear bilge water transfer control box are both provided with three working states: "local manual mode", "local automatic mode" and "remote control mode"; The two sets of bilge oily water treatment devices are specifically divided into a front bilge oily water treatment device and a rear bilge oily water treatment device, and the electric control boxes of the front bilge oily water treatment device and the rear bilge oily water treatment device are respectively connected to the front bilge water regulating and barge control box and the rear bilge water regulating and barge control box.

2. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 1, characterized in that: The bilge oily wastewater treatment device comprises: a primary separation component, a secondary fiber filter, a tertiary ultrafiltration membrane group, an electric control box, a process pump, an oil concentration meter and a control valve; The primary separation component is used to separate oil from water in oily wastewater; The secondary fiber filter is used to filter the oily wastewater separated by the primary separation component; The three-stage ultrafiltration membrane group is used to further perform osmotic separation treatment on unqualified water after filtration treatment by the two-stage fiber filter.

3. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 2, characterized in that: The electric control box is used to receive control instructions sent by the corresponding bilge water transfer control box, and control the primary separation component, the secondary fiber filter, the tertiary ultrafiltration membrane group and the process pump to perform corresponding actions; The process pump is used to pump the bilge water into the primary separation component for initial separation and then send it into the secondary fiber filter for filtration treatment; The oil concentration meter is used for automatically sampling and monitoring the oil content in the discharge liquid. If the oil content in the discharge liquid exceeds the preset oil content value, the oil concentration meter will sound an alarm and control the corresponding pipeline to return unqualified water to the bottom of the bilge. If the oil content in the discharge liquid is lower than the preset oil content value, the corresponding pipeline will be controlled to discharge qualified water overboard.

4. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 2, characterized in that: The control valve component includes: a pressure controller and a temperature controller; The pressure controller is used to detect the vacuum pressure in the primary separation component in real time to control the operating parameters of the process pump; The temperature controller is used to detect the temperature signal of the oily wastewater in the pipeline in real time to control the start and stop of the steam heating pipe and the electric heater in the first-stage separation component.

5. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 1, characterized in that: The bilge water regulating control box obtains the liquid level information in the bilge water compartment in real time through the liquid level gauge, and sends corresponding control signals to the bilge oily sewage treatment device, the drain pump control box, and the bilge pipeline electro-hydraulic valve, and at the same time feeds back the status information and alarm signals of each device to the comprehensive anti-pollution monitoring system in real time.

6. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 5, characterized in that: The bilge water transfer control box: When in "local manual mode", the switch control of each electro-hydraulic valve and the start and stop control of the drain pump can be carried out manually; When in "local automatic mode", two working modes of "in-ship transfer mode" or "out-ship shore transfer mode" can be further selected on the bilge water transfer control box; The "onboard transfer mode" is used to control the corresponding electro-hydraulic valve and drain pump to transfer the oily sewage in the bilge water compartment to the ship's bilge oily sewage collection tank; The "overboard shore transfer mode" is used to control the corresponding electro-hydraulic valves and drain pumps so that the oily sewage in the bilge water compartment is treated by the corresponding bilge oily sewage treatment device and then discharged to the overboard or shore connection pipeline.

7. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 6, characterized in that: When the bilge water transfer control box is in "remote control mode", the default state is "in-ship transfer mode", and receives the working condition command sent by the anti-pollution integrated monitoring system in real time: When receiving the "shore transfer" command, the bilge water transfer control box automatically switches to the "off-board shore transfer mode"; When receiving the "zero discharge" command, the bilge water transfer control box automatically switches to the "in-ship transfer mode", and when the liquid level alarm of the ship's bilge oily sewage collection tank is triggered, the oily sewage is automatically transferred to the spare oily sewage collection tank in the ship; When receiving the "limited discharge" command, the bilge water transfer control box alternately executes the "off-board shore transfer mode" and the "on-board transfer mode" at preset time intervals; When receiving the "isolation valve closed" command, the bilge water transfer control box automatically closes the electro-hydraulic isolation valve located on the main transverse bulkhead.

8. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 7, characterized in that: The bilge water regulating device is provided with a mutual calling function of a front bilge water regulating control box and a rear bilge water regulating control box, and performs mutual standby regulating of the front / middle / rear bilge drain pumps by controlling the corresponding front / middle / rear bilge pipeline electro-hydraulic valves.

9. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 4, characterized in that: When the bilge oily wastewater treatment device is in operation, the oily wastewater is sucked into the primary separation component by the process pump for initial separation, and then sent to the secondary fiber filter for filtration treatment; A negative pressure state is maintained inside the primary separation component, and the vacuum pressure value inside the primary separation component is monitored in real time through a vacuum pressure gauge on the instrument panel.

10. A bilge water purification system with comprehensive integrated monitoring for ships according to claim 3, characterized in that: The effluent after being filtered by the secondary fiber filter: if the oil concentration reaches the discharge standard, it will be discharged overboard after passing through the flow meter; if the oil concentration exceeds the standard, it will be transferred to the tertiary ultrafiltration membrane group for further osmotic separation treatment; If the oil concentration of the effluent treated by the three-stage ultrafiltration membrane group reaches the discharge standard, it will be discharged overboard after passing through a flow meter; if the oil concentration still exceeds the standard, it will be transferred to the ship's bilge oil and sewage collection tank.

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