CN104153333B - Semi-submersible type sea oil spill cleaning ship and control method thereof - Google Patents

Abstract

The invention discloses a semi-submersible oil spill cleaning ship and its control method, comprising a controller arranged on the hull, a wireless transceiver, several ballast tanks and floating bodies for adjusting the diving depth of the hull, and a water inlet pipe , the oil-water separation system connected with the outlet of the water inlet pipe, the oil storage tank connected with the oil-water separation system, the water storage well and the power system connected with the oil-water separation system; the water storage well is equipped with a turbine generator; the floating body is located on the hull On the lower surface; the ballast tank is connected with the water inlet and outlet pipes, the water pumps are arranged on the water inlet and outlet pipes, and the water level sensor is arranged in the ballast tank. The invention is semi-submerged in water, is less affected by wind and waves, and can work under harsh sea conditions; it can complete the recovery and treatment of oil pollution at the oil spill site, without the need to transport the oily sewage to the shore for further treatment, reducing round-trip transportation The time, as long as enough energy is provided, it can continue to work and has the characteristics of high work efficiency.

Description

Semi-submersible oil spill cleaning ship and its control method

technical field

The invention relates to the technical field of oil pollution treatment on water, in particular to an energy-saving semi-submersible oil spill cleaning ship and a control method thereof, which can monitor the oil spill treatment effect and use cleaned water to generate electricity.

Background technique

With the continuous development of the world economy, the total energy consumption is increasing day by day. As one of the most important energy sources, the consumption of oil is also increasing rapidly. According to data from the Energy Information Administration of the U.S. Department of Energy, the global oil demand in 2012 was 89.05 million barrels per day. China is the main oil consumer. According to domestic data, China consumed 439 million tons of oil in 2010 and 4.7 million tons in 2011. billion tons, and consumed 493 million tons of oil in 2012. China has become the world's second largest oil consumer.

There are many unsafe factors in the production, transportation and processing of oil, especially the oil spill accident at sea. According to statistics, there are three main sources of marine oil spill accidents, the first is ship oil spill pollution accidents, the second is offshore oil exploration and development accidents, and the third is land-based oil spills and oil spills with unknown causes.

At present, the commonly used methods for cleaning up oil spills at sea mainly include physical recovery, chemical removal, and on-site incineration:

Chemical dispersants can quickly dilute oil spills, but their own toxicity will cause secondary environmental damage. Governments around the world have adopted a cautious attitude towards the application of dispersants.

On-site burning is effective for fresh oil spills (spills that have occurred not long ago), fire-resistant booms can make the oil film thick enough to burn (at least 2-3 mm thick), works well in calm seas, but can produce severe air pollution, It affects the lives of residents on the shore, and will bring residues to the sea surface after burning.

Physical recovery is to use cleaning ships and staff to clean up the oil spilled on site. There are many potential safety hazards. Once a fire occurs, it will pose a huge threat to the cleaning personnel, and it cannot be carried out when there is strong wind, waves or heavy fog. Cleanup work.

Chinese Patent Authorization Publication No.: CN103015385A, authorized publication date April 3, 2013, discloses a marine oil spill automatic recovery device, which has an oil-water separator and an automatic propeller connected by a water pipe; the oil-water separator The oil grate is connected through the angle regulator; the oil grate is connected with the oil-water separator through the hose; the water pump is installed in the automatic propeller; the water pump is connected with multiple electric control channels. valve; the multi-way electric control valve is connected with water spray pipes located on different sides of the automatic propeller, and the water pump can add the separated water in the oil-water separator to the After pressure, it sprays out to the water spray pipe through the multi-way electric control valve. The disadvantage of the invention is that the oil spill treatment effect cannot be monitored, and the oil spill treatment quality cannot be guaranteed.

Contents of the invention

The purpose of the invention is to overcome the secondary pollution caused by the sea oil spill treatment method in the prior art and the inability of the automatic oil spill recovery device to monitor the oil spill treatment effect, and to provide a method for monitoring the oil spill treatment effect. An energy-saving semi-submersible oil spill cleanup ship and a control method thereof are provided for monitoring and utilizing cleaned water to generate electricity.

In order to achieve the above object, the present invention adopts the following technical solutions:

A semi-submersible oil spill cleaning ship, including a controller arranged on the hull, a wireless transceiver, several ballast tanks and floating bodies for adjusting the diving depth of the hull, a water inlet pipe, and a water outlet of the water inlet pipe. The oil-water separation system, the oil storage tank connected with the oil-water separation system, the water storage well and the power system connected with the oil-water separation system; the turbine generator is installed in the water storage well; the floating body is located on the lower surface of the hull; the ballast tank and the power system The water inlet and outlet pipes are connected, the water pumps are installed on the water inlet and outlet pipes, and the water level sensor is installed in the ballast tank;

The oil-water separation system includes oil-water separators and liquid storage tanks that are arranged circularly from front to back. A solenoid valve is provided between the water outlet of the liquid storage tank and the oil-water separator. The oil tanks are connected, and each liquid storage tank is connected with the water storage well through the water delivery pipeline. The solenoid valve is installed on the water delivery pipeline. Water pumps and solenoid valves are installed on the water and return pipes, oil content measuring instruments are installed in the water of the liquid storage tank, and water level sensors are installed in the storage well;

The controller is electrically connected with the wireless transceiver, the water level sensor, each water pump, each solenoid valve and each oil content measuring instrument;

The turbine generator is electrically connected with the power system, and the water storage well communicates with the water outlet on the hull through the drainage pipe; several filter screens are arranged at the front of the water inlet pipe.

The ballast tank and the buoyant body are used to adjust the depth of the hull submerged in water. When the wind and waves are large, the controller performs water replenishment and ballast for the ballast tank through the water pump, so that the semi-submersible oil spill cleaning ship in water of the present invention dives to a deeper level. reduce the force of wind and waves on the semi-submersible oil spill cleaning ship, and improve the stability of the semi-submersible oil spill cleaning ship; when the wind and waves are small, the controller discharges the ballast water in the ballast tank through the water pump, The hull was raised to a suitable height for oil spill treatment.

The oil spill cleaning work of the present invention includes the process of extracting water polluted by oil, the process of oil-water separation, power generation and drainage:

The controller controls the work of the water pump installed on the water inlet pipe, the oil-polluted water enters the water inlet pipe, and the garbage in the water is filtered out by the filter;

The water enters the oil-water separators step by step, the separated oil enters the oil storage tank, the water enters the liquid storage tank, and the oil content measuring instrument in the liquid storage tank detects the oil content in the water;

When the oil content is less than W, the controller controls the solenoid valve on the water pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

When the oil content is greater than or equal to W, the controller controls the solenoid valve between the water outlet of the liquid storage tank and the i+1st stage oil-water separator to open, and the water in the liquid storage tank enters the i+1-stage oil-water separator ;

The last stage of oil-water separator, the separated oil enters the oil storage tank; the water enters the liquid storage tank,

a. When the oil content < W, the controller controls the solenoid valve on the water delivery pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

b. When the oil content is greater than or equal to W, the controller controls the electromagnetic valve on the return water pipeline to open, and the controller controls the water pump installed on the return water pipeline to drive the water back to the first-stage oil-water separator;

The water level sensor in the water storage well detects the water level in the water storage well, and the turbine generator installed in the water storage well uses the floating and impact force of water to generate electricity, and the electric energy is input into the power system;

When the water level in the storage well is ≥ H, the controller controls the solenoid valve on the drainage pipe to open, and the oil-removed water is discharged from the water outlet.

Therefore, the present invention has the advantages of being semi-submerged in water, less affected by wind and waves, and able to work under severe sea conditions; when the wind and waves are larger, the generator can provide more energy, and improve the durability of the semi-submersible oil spill cleaning ship on water. The ability to work reduces the cost of use; the recovery and treatment of oil pollution can be completed at the oil spill site, and there is no need to transport the oily sewage to the shore for further treatment, reducing the time for round-trip transportation. As long as sufficient energy is provided, it can continue to work. Features of high efficiency.

As a preference, a sewage volume adjustment box is provided between the first stage oil-water separator and the water outlet of the water inlet pipe, a water level sensor is provided in the sewage volume adjustment box, and an electromagnetic flow control valve is provided at the front end of the water inlet pipe; the last stage storage The liquid tank is connected with the sewage volume regulating tank through the return water pipe; the electromagnetic flow control valve and the water level sensor are both electrically connected with the controller.

The arrangement of the sewage volume regulating tank enables the oil-water separation system of the present invention to continuously and stably perform oil-water separation operations on water polluted by oil spills, without too much or too little sewage to be treated.

Preferably, the hull is provided with a vertical support wall, the water inlet pipe extends in a wave shape on the vertical plane, and the rear part of the water inlet pipe passes through the upper part of the support wall and communicates with the first-stage oil-water separator. Oil-water separators and liquid storage tanks are arranged in order from high to low, and the oil-water separators at all levels and each liquid storage tank are connected to the hull through support frames.

The wavy water inlet pipe can mix the water polluted by oil spill evenly, providing a reliable basis for improving the oil-water separation quality of the oil-water separation system.

Preferably, the model of the oil content measuring instrument is JC602-3420; it also includes a GPS locator or a Beidou locator, the locator is electrically connected to the controller, and the drain is located at the stern.

The locator is arranged at the front of the hull, and the locator has functions such as navigation and positioning. The cleaner can accurately locate the hull at a distance, and control the movement track of the hull, so as to guide the semi-submersible oil spill cleaning ship in the water to sail. Carry out oil spill treatment in waters with a large amount of oil spills to improve work efficiency. Cleaners do not need to go deep into oil spilled waters to control the cleaning operation and reduce the threat to personnel safety.

Preferably, the power system includes a power device propelled by gas or fuel oil and a power device propelled by electricity, and the turbine generator is electrically connected to the power device propelled by electricity.

The two sets of power units have an automatic conversion function. When the electric energy generated by the turbine generator is not enough to push the semi-submersible oil spill cleaning ship of the present invention to advance, it will automatically switch to the fuel-propelled power unit. When the power generated by the turbine generator is sufficient , switch to an electric propulsion powerplant.

Preferably, the floating body is a hollow cube matching the shape of the bottom of the ship.

A method for controlling a semi-submersible oil spill cleaning ship on water, comprising the following steps:

The controller is provided with the oil content threshold W, the critical water level H of the water storage well, the corresponding relationship between weather conditions and the standard water depth in the ballast tank, and the serial number of the oil-water separator is set to i, i=1,...,n; set The initial value of i is 1;

(7-1) Adjust the diving depth of the hull:

The wireless transceiver receives the information of weather conditions, and the controller controls the pumps on the inlet and outlet pipes to work according to the weather conditions, so that the ballast tank can be flooded or drained, so that the depth of the hull dive corresponds to the weather conditions;

When adjusting the diving depth, the controller compares the data detected by the water level sensor installed in the ballast tank with the standard water depth in the ballast tank corresponding to the weather condition, so that the weather condition corresponds to the diving depth.

(7-2) Extraction of oil-contaminated water:

The controller controls the work of the water pump installed on the water inlet pipe, the oil-polluted water enters the water inlet pipe, and the garbage in the water is filtered out by the filter;

(7-3) Oil-water separation:

(7-3-1) Water enters the i-stage oil-water separator, and the i-stage oil-water separator separates the oil and water. The separated oil enters the oil storage tank, and the water enters the liquid storage tank. The oil content in the liquid storage tank is measured The instrument detects the oil content in water;

When the oil content is less than W, the controller controls the solenoid valve on the water pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

When the oil content is greater than or equal to W, the controller controls the solenoid valve between the water outlet of the liquid storage tank and the i+1st stage oil-water separator to open, and the water in the liquid storage tank enters the i+1-stage oil-water separator ;

(7-3-2) When i<n, increase the value of i by 1, and repeat step (7-3-1);

(7-3-3) When water enters the n-stage oil-water separator, the n-stage oil-water separator separates the oil and water, and the separated oil enters the oil storage tank; the water enters the liquid storage tank, and the oil content in the liquid storage tank The measuring instrument detects the oil content in the water;

a. When the oil content < W, the controller controls the solenoid valve on the water delivery pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

b. When the oil content is greater than or equal to W, the controller controls the electromagnetic valve on the return water pipeline to open, and the controller controls the water pump installed on the return water pipeline to drive the water back to the first-stage oil-water separator;

(7-4) Power generation and discharge of deoiled water:

The water level sensor in the water storage well detects the water level in the water storage well, and the turbine generator installed in the water storage well uses the floating and impact force of water to generate electricity, and the electric energy is input into the power system;

When the water level in the storage well is ≥ H, the controller controls the solenoid valve on the drainage pipe to open, and the oil-removed water is discharged from the water outlet.

As a preference, a sewage volume adjustment box is provided between the first stage oil-water separator and the water outlet of the water inlet pipe, a water level sensor is provided in the sewage volume adjustment box, and an electromagnetic flow control valve is provided at the front end of the water inlet pipe; the last stage storage The liquid tank is connected to the sewage volume regulating tank through the return pipe; the electromagnetic flow control valve and the water level sensor are both electrically connected to the controller; it is characterized in that the step b is replaced by the following steps:

The controller has a water level standard range. When the oil content is ≥ W, the controller controls the solenoid valve on the return water pipe to open, and the controller controls the water pump on the return water pipe to drive the water back to the sewage volume adjustment tank;

The water level sensor in the sewage volume regulating tank detects the water level in the sewage volume regulating tank. When the water level in the sewage volume regulating tank is higher than the upper limit of the water level standard range, the controller controls the sewage flow into the water inlet pipe through the electromagnetic flow control valve. reduce;

When the water level in the sewage volume regulating tank is lower than the lower limit of the water level standard range, the controller controls the flow of sewage entering the water inlet pipe to increase through the electromagnetic flow control valve.

Preferably, H is 82%-93% of the height of the storage well.

Therefore, the present invention has following beneficial effect:

(1) The semi-submersible oil spill cleaning ship of the present invention is semi-submerged in water, less affected by wind and waves, and can work under harsh sea conditions;

(2) Cleaners only need to maneuver on distant ships or on shore, reducing the risk of exposure to oil spill sites;

(3) In the case of strong wind and waves, the generator can provide more energy, improve the ability of the semi-submersible oil spill cleaning ship to continue working, and reduce the cost of use;

(4) The recovery and treatment of oil pollution can be completed at the oil spill site, without the need to transport the oily sewage to the shore for further treatment, reducing the time for round-trip transportation, as long as sufficient energy is provided, it can continue to work, and the work efficiency is high;

(5) The semi-submersible oil spill cleaning vessel is a detachable structure assembled from several parts, which can be transported to other places for use after the cleaning work is completed, so as to improve the utilization rate of the semi-submersible oil spill cleaning vessel.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a kind of structural representation of water inlet pipe, support wall, all levels of oil-water separators, liquid storage tank and storage well of the present invention;

Fig. 3 is a kind of structural representation of floating body of the present invention;

Fig. 4 is a kind of functional block diagram of the present invention;

Fig. 5 is a flow chart of Embodiment 1 of the present invention.

In the figure: controller 1, ballast tank 2, floating body 3, water inlet pipe 4, oil storage tank 5, water storage well 6, turbine generator 7, power system 8, oil-water separator 9, liquid storage tank 10, oil pipeline 11. Return water pipe 12, water pump 13, water level sensor 14, filter screen 15, sewage volume regulating box 16, electromagnetic flow control valve 17, support wall 18, GPS locator 19, water outlet 20, wireless transceiver 21, oil content Measuring instrument 22, water inlet and outlet pipeline 23.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

The embodiment shown in Figure 1 and Figure 2 is a semi-submersible oil spill cleaning ship, including a controller 1 located on the hull, a wireless transceiver 21, and 2 ballasts for adjusting the diving depth of the hull The cabin 2 and the floating body 3, the water inlet pipe 4, the oil-water separation system connected with the water outlet of the water inlet pipe, the oil storage tank 5 connected with the oil-water separation system, the water storage well 6 and the power system 8 connected with the oil-water separation system; water storage A turbine generator 7 is provided in the well; the floating body is located on the lower surface of the hull; the ballast tank is connected to the water inlet and outlet pipes 23, and a water pump is arranged on the inlet and outlet pipes, and a water level sensor 14 is arranged in the ballast tank;

The oil-water separation system includes 3 oil-water separators 9 and 3 liquid storage tanks 10. Solenoid valves are installed between the water outlets of the liquid storage tanks and the oil-water separators. The oil-water separators at all levels are connected to the oil storage tanks through oil pipelines 11 , each liquid storage tank is connected to the water storage well through a water delivery pipeline, and a solenoid valve is arranged on the water delivery pipeline. Water pumps 13 and electromagnetic valves are provided on the water pipelines, oil content measuring instruments 22 are provided in the water of the liquid storage tank, and water level sensors 14 are provided in the storage wells;

As shown in Figure 4, the controller is electrically connected to the wireless transceiver, the water level sensor, each water pump, each solenoid valve and each oil content measuring instrument;

The turbine generator is electrically connected with the power system, and the water storage well communicates with the water outlet 20 located on the hull through the drainage pipe; the front part of the water inlet pipe is provided with 3 filter screens 15 .

The model of the oil content measuring instrument is JC602-3420; It also includes a GPS locator 19, the locator is electrically connected with the controller, and the drain is located at the stern.

As shown in Figure 2, a vertical support wall 18 is provided on the hull, and the water inlet pipe extends in a wave shape on the vertical plane, and the rear part of the water inlet pipe passes through the upper part of the support wall and communicates with the first-stage oil-water separator. Oil-water separators and liquid storage tanks are arranged in order from high to low, and the oil-water separators at all levels and each liquid storage tank are connected to the hull through support frames.

The power system includes a power device propelled by gas or fuel oil and a power device propelled by electricity, and the turbine generator is electrically connected with the power device propelled by electricity. As shown in Figure 3, the floating body is a hollow cube matching the shape of the bottom of the ship.

As shown in Figure 5, a control method of a semi-submersible oil spill cleaning ship on water, comprising the following steps:

The controller is equipped with the oil content threshold W and the critical water level H of the water storage well, the corresponding relationship between the weather conditions and the water depth in the ballast tank, and the serial number of the oil-water separator is set to i, i=1,...,3; set i The initial value of is 1;

Step 100, adjusting the diving depth of the hull:

The wireless transceiver receives the information of weather conditions, and the controller controls the pumps on the inlet and outlet pipes to work according to the weather conditions, so that the ballast tank can be flooded or drained, so that the depth of the hull dive corresponds to the weather conditions;

Step 200, extracting oil-contaminated water:

The controller controls the work of the water pump installed on the water inlet pipe, the oil-polluted water enters the water inlet pipe, and the garbage in the water is filtered out by the filter;

Step 300, oil-water separation:

Step 310, the water enters the i-stage oil-water separator, the i-stage oil-water separator separates the oil and water, the separated oil enters the oil storage tank, the water enters the liquid storage tank, and the oil content measuring instrument in the liquid storage tank detects the oil in the water oil content;

When the oil content is less than W, the controller controls the solenoid valve on the water pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

When the oil content is greater than or equal to W, the controller controls the solenoid valve between the water outlet of the liquid storage tank and the i+1st stage oil-water separator to open, and the water in the liquid storage tank enters the i+1-stage oil-water separator ;

Step 320, when i<3, increase the value of i by 1, and repeat step 310;

Step 330, when the water enters the third-stage oil-water separator, the third-stage oil-water separator separates the oil and water, and the separated oil enters the oil storage tank; the water enters the liquid storage tank, and the oil content measuring instrument in the liquid storage tank detects oil content;

a. When the oil content < W, the controller controls the solenoid valve on the water delivery pipeline connected with the liquid storage tank to open, and the water in the liquid storage tank is discharged into the water storage well;

b. When the oil content is greater than or equal to W, the controller controls the electromagnetic valve on the return water pipeline to open, and the controller controls the water pump installed on the return water pipeline to drive the water back to the first-stage oil-water separator;

Step 400, generating electricity and discharging the deoiled water:

The water level sensor in the water storage well detects the water level in the water storage well, and the turbine generator installed in the water storage well uses the floating and impact force of water to generate electricity, and the electric energy is input into the power system;

When the water level in the storage well is ≥ H, the controller controls the solenoid valve on the drainage pipe to open, and the oil-removed water is discharged from the water outlet. In this embodiment, H is 90% of the height of the storage well.

Example 2

In Embodiment 2, a sewage volume regulating box 16 is provided between the first-stage oil-water separator and the water outlet of the water inlet pipe, a water level sensor 14 is provided in the sewage volume regulating box, and an electromagnetic flow control valve 17 is provided at the front end of the water inlet pipe; finally The primary liquid storage tank is connected with the sewage volume regulating tank through the return water pipe; the electromagnetic flow control valve and the water level sensor are both electrically connected with the controller. Other structural parts in Embodiment 2 are the same as in Embodiment 1.

Step b in Example 1 is replaced by the following steps, and other steps in Example 2 are the same as in Example 1.

The standard range of water level is set in the controller, and the standard range of water level is 30% to 85% of the height of the sewage volume adjustment tank;

When the oil content is greater than or equal to W, the controller controls the electromagnetic valve on the return water pipe to open, and the controller controls the water pump on the return water pipe to drive the water back to the sewage volume adjustment tank;

The water level sensor in the sewage volume adjustment tank detects the water level in the sewage volume adjustment tank. When the water level in the sewage volume adjustment tank is greater than 85% of the height of the sewage volume adjustment tank, the controller controls the sewage entering the water inlet pipe through the electromagnetic flow control valve. flow reduction;

When the water level in the sewage volume regulating tank is less than 30% of the height of the sewage volume regulating tank, the controller controls the sewage flow into the water inlet pipe to increase through the electromagnetic flow control valve.

W in embodiment 1 and embodiment 2 is 0.03mg/L.

It should be understood that this embodiment is only used to illustrate the present invention but not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (9)

1. a semi-submersible type sea oil spill cleaning ship, it is characterized in that, comprise the controller (1) be located on hull, wireless transceiver (21), for regulating several ballast tanks (2) and the buoyancy aid (3) of the hull submerges degree of depth, water inlet pipe (4), the oil-water separation system be communicated with the delivery port of water inlet pipe, the oil conservater be communicated with oil-water separation system (5), the retaining well (6) be communicated with oil-water separation system and dynamical system (8); Turbogenerator (7) is provided with in retaining well; Buoyancy aid is positioned on hull soffit; Ballast tank is connected with water-in and water-out pipeline (23), water-in and water-out pipeline is equipped with water pump (13), is provided with level sensor (14) in ballast tank;

Described oil-water separation system comprises from front to back the oil water separator (9) of cycle arrangement successively and stores liquid case (10), store between the delivery port of liquid case and oil water separator and be provided with electromagnetic valve, oil water separator at different levels is all communicated with oil conservater by oil pipeline (11), each is stored liquid case and is all communicated with retaining well by aqueduct, aqueduct is provided with electromagnetic valve, afterbody is stored liquid case and is connected with first order oil water separator by water return pipeline (12), water inlet pipe and water return pipeline are equipped with water pump (13) and electromagnetic valve, store in the water of liquid case and be equipped with oil content measuring instrument (22), level sensor (14) is provided with in retaining well,

Controller is electrically connected with wireless transceiver, level sensor, each water pump, each electromagnetic valve and each oil content measuring instrument respectively;

Turbine generator is electrically connected with dynamical system, and retaining well is connected with the delivery port be located on hull (20) by drainage pipe; Described water inlet pipe front portion is provided with several screen packs (15).

2. semi-submersible type sea oil spill cleaning ship according to claim 1, it is characterized in that, sewage quantity regulating box (16) is provided with between first order oil water separator and the delivery port of water inlet pipe, be provided with level sensor (14) in sewage quantity regulating box, water inlet pipe front end is provided with electromagnetic flow control valve (17); Afterbody is stored liquid case and is connected with sewage quantity regulating box by water return pipeline; Electromagnetic flow control valve and level sensor are all electrically connected with controller.

3. semi-submersible type sea oil spill cleaning ship according to claim 1, it is characterized in that, described hull is provided with vertical supporting wall (18), described water inlet pipe is wavy extension on vertical guide, water inlet pipe rear portion is passed knee wall top and is connected with first order oil water separator, oil water separator at different levels and store liquid case and set gradually from high to low, oil water separator at different levels is stored liquid case with each and is all connected with hull by bracing frame.

4. semi-submersible type sea oil spill cleaning ship according to claim 1, it is characterized in that, the model of described oil content measuring instrument is JC602-3420; Also comprise GPS position indicator (19) or Big Dipper position indicator, position indicator is electrically connected with controller, and outfall is positioned at stern.

5. semi-submersible type sea oil spill cleaning ship according to claim 1, it is characterized in that, described dynamical system comprises the power set and the power set utilizing electric propulsion that utilize combustion gas or fuel oil to advance, and turbine generator is electrically connected with utilizing the power set of electric propulsion.

6. the semi-submersible type sea oil spill cleaning ship according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, buoyancy aid is the hollow cubic body closed with boat bottom matching form.

7. be applicable to a control method for semi-submersible type sea oil spill according to claim 1 cleaning ship, it is characterized in that, comprise the steps:

Be provided with oil content threshold value W and retaining well critical groundwater table H in controller, the corresponding relation of weather condition and the ballast tank Plays depth of water, the sequence number of setting oil water separator is i, i=1 ..., n; The initial value of setting i is 1;

(7-1) the hull submerges degree of depth is regulated:

Wireless transceiver receives weather condition information, and controller controls the pump working on water-in and water-out pipeline according to weather condition, ballast tank is intake or draining, thus makes the degree of depth of hull submerges corresponding with weather condition;

(7-2) water be polluted by the oil is extracted:

Controller controls the pump working be located on water inlet pipe, and the water be polluted by the oil enters in water inlet pipe, and the rubbish in water is filtered net filtration and falls;

(7-3) water-oil separating:

(7-3-1) water enters i-th grade of oil water separator, and i-th grade of oil water separator is separated profit, and the oil separated enters oil conservater, and water enters and stores liquid case, and the oil content measuring instrument stored in liquid case detects the oil content in water;

As oil content < W, controller controls to open with the described electromagnetic valve stored on aqueduct that liquid case is communicated with, and the water storing liquid case is discharged in retaining well;

As oil content >=W, described in controller controls, the electromagnetic valve stored between the delivery port of liquid case and the i-th+1 grade oil water separator is opened, and the water stored in liquid case enters in the i-th+1 grade oil water separator;

(7-3-2) as i < n, make i value increase by 1, repeat step (7-3-1);

(7-3-3) when water enters n-th grade of oil water separator, n-th grade of oil water separator is separated profit, and the oil separated enters oil conservater; Water enters and stores liquid case, and the oil content measuring instrument stored in liquid case detects the oil content in water;

A., as oil content < W, controller controls to open with the described electromagnetic valve stored on aqueduct that liquid case is communicated with, and the water storing liquid case is discharged in retaining well;

B. as oil content >=W, the electromagnetic valve that controller controls on water return pipeline is opened, and controller controls the water pump be located on water return pipeline and drives water to be back to first order oil water separator;

(7-4) generate electricity and discharge the water through oil removal treatment:

Level sensor in retaining well detects the water level in retaining well, and the turbine generator be located in retaining well utilizes floating of water and impact force generating, and electric energy is input in dynamical system;

As the water level >=H in retaining well, controller controls the electromagnetic valve be located on drainage pipe and opens, and the water through oil removal treatment is discharged from delivery port.

8. the control method of semi-submersible type sea oil spill cleaning ship according to claim 7, sewage quantity regulating box is provided with between described first order oil water separator and the delivery port of water inlet pipe, be provided with level sensor in sewage quantity regulating box, water inlet pipe front end is provided with electromagnetic flow control valve; Afterbody is stored liquid case and is connected with sewage quantity regulating box by water return pipeline; Electromagnetic flow control valve and level sensor are all electrically connected with controller; It is characterized in that, described step b is replaced by following step:

Be provided with water level critical field in controller, as oil content >=W, the electromagnetic valve that controller controls on water return pipeline is opened, and controller controls the water pump be located on water return pipeline and drives water to be back to sewage quantity regulating box;

Level sensor in sewage quantity regulating box detects the water level in sewage quantity regulating box, and when the water level in sewage quantity regulating box is greater than the higher limit of water level critical field, controller controls by electromagnetic flow control valve the discharge of sewage entered in water inlet pipe to be reduced;

When the water level in sewage quantity regulating box is less than the lower limit of water level critical field, controller controls by electromagnetic flow control valve the discharge of sewage entered in water inlet pipe and increases.

9. the control method of the semi-submersible type sea oil spill cleaning ship according to claim 7 or 8, it is characterized in that, H is the 82%-93% of retaining well height.