A polyphase flow integrated cooling type marine generator

Abstract

The application discloses a multi-phase flow integrated cooling type marine generator and relates to the technical field of marine generator cooling. Different particle size impurities in seawater are graded and intercepted by the primary blocking member and the secondary blocking member, so that the possibility of impurities entering the cooling system can be reduced. The characteristic that the pressure difference of the main blocking net increases after the main blocking net is blocked is used to convert the axial displacement of the main blocking net into a pressure signal of the inductor, so that the flow state of the main blocking net can be judged in combination with the current water supply working condition. When the blocking is intensified, the auxiliary blocking net automatically forms a supplementary filtering passage, so that the effective flow area is increased while the seawater filtration is maintained, and buffer time is reserved for generator load reduction or maintenance. The resetting action of the elastic member is used, so that the rotating drum is retracted and rotated under the cooperation of the thread groove and the convex ball, and then the rotating drum drives the scraper to clean the main blocking net. Meanwhile, the auxiliary blocking net is scraped and back-flushed by the reverse flushing of the recovery ring, so that the impurities intercepted at each filtering position can be concentrated and discharged, and the filtering capacity can be restored.

Description

Technical Field

[0001] This invention relates to the field of marine generator cooling technology, specifically a multiphase flow integrated cooling marine generator. Background Technology

[0002] A marine generator is a power supply device installed on a ship or offshore platform to convert mechanical energy into electrical energy. It typically consists of a prime mover, a generator unit, a control unit, and auxiliary systems such as starting, fuel, and exhaust systems. The generated electricity can be used for shipboard lighting, navigation and communication, pumps, living quarters, and other onboard electrical installations. Depending on the ship's operating status, it can provide main power, auxiliary power, or emergency power, making it a crucial piece of equipment for ensuring the stable operation of the ship's electrical system.

[0003] Existing marine generators typically require external seawater for cooling. However, the silt, seaweed, and shell fragments carried in the seawater can easily accumulate in the filtration section, heat exchanger, and cooling pipes. Conventional filtration devices are unable to promptly reflect the degree of blockage and maintain the cooling water supply while keeping the filtration in place. Once blocked, the generator often needs to be shut down for disassembly and cleaning, which can easily lead to a decrease in cooling flow and frequent maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a multiphase flow integrated cooling marine generator to solve the problem of seawater impurity treatment in the generator cooling system of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multiphase flow integrated cooling marine generator, comprising a generator box and a pretreatment mechanism, wherein a motor assembly is installed in the generator box, a cooling system is installed in the generator box, a plurality of shock absorbers are provided in the generator box, the shock absorbers are connected to the bottom end of the motor assembly, and a frequency converter is installed in the generator box. The pretreatment mechanism includes a treatment box, which is connected to the cooling system inlet pipe. The treatment box has a blocking chamber, a primary blocking component is installed on one side of the blocking chamber, and a secondary blocking component is movably installed on the other side of the blocking chamber. A detection processor is installed on the primary blocking component, and the detection end of the detection processor is connected to the secondary blocking component. The treatment box has a clean water chamber located on one side of the secondary blocking component. The treatment box also has an expansion chamber, which is connected to the clean water chamber.

[0006] The generator is connected to an external control system, which can operate the entire generator. The primary blocking component uses a grid structure to block large impurities in seawater. A drain port is located at the bottom of the blocking chamber, and an electric valve is installed on the drain port.

[0007] During operation, the water supply pipeline delivers seawater to the inlet of the treatment tank. The primary blocking component first intercepts large impurities in the seawater. The pre-filtered seawater enters the blocking chamber and then passes through the main blocking net into the clean water chamber. The main blocking net further traps smaller particles such as silt. The treated seawater then enters the cooling system through the connection end to provide cooling water for the unit.

[0008] After the motor assembly starts, its power end drives the generator end to operate and generate electricity. The generated electricity is then regulated by the frequency converter and output at a set voltage and frequency. The internal circulating coolant first absorbs the heat generated by the motor assembly, then enters the seawater heat exchanger to exchange heat with pretreated low-temperature seawater. The cooled circulating coolant returns to the motor assembly for continuous cooling, while the heat-absorbing seawater continues to enter the flue gas mixing discharge structure to mix with the high-temperature exhaust gas generated by the motor assembly. After reducing the exhaust gas temperature and emission noise, the mixture is discharged together. This achieves a multi-phase synergistic cooling effect on heat-generating components, liquid cooling medium, and gaseous exhaust gas through a specific flow relationship between the internal circulating coolant, external seawater, and high-temperature exhaust gas, improving the utilization rate of the cooling medium and the overall heat exchange efficiency. At the same time, the shock absorbers buffer the vibration generated by the operation of the motor assembly, reducing the transmission of vibration to the generator box.

[0009] Furthermore, the detection processor includes a detection sleeve, which is mounted on the primary blocking component. A sensor is installed inside the detection sleeve, and a slide rod is slidably mounted inside the detection sleeve. An elastic element is installed between the slide rod and the sensor. A restorer is rotatably mounted on the slide rod and is movably connected to the detection sleeve. A limiter is installed inside the detection sleeve, and one end of the slide rod passes through the sensor and is connected to the secondary blocking component.

[0010] The sensor can be a pressure sensor. The elastic element can be a spring.

[0011] Furthermore, the secondary blocking component includes a main blocking net, a connecting ring installed on the outer edge of the main blocking net, a secondary blocking net installed on the connecting ring, and the main blocking net connected to the sliding rod; The treatment box is equipped with a recovery ring, which forms a storage cavity with the inner wall of the treatment box. The secondary blocking net is movably connected to the storage cavity, and the recovery ring is in close contact with the inner wall of the secondary blocking net.

[0012] The end of the recovery ring adopts a scraper structure.

[0013] After seawater enters the blocking chamber, it acts on the main blocking net along the water flow direction. Because the main blocking net resists the seawater flow, a pressure difference is generated between its upstream and downstream sides. This pressure difference acts on the main blocking net, creating an axial thrust along the water flow direction, causing the main blocking net to move the sliding rod within the detection sleeve. As the sliding rod moves, it gradually compresses the elastic element until the reaction force of the elastic element and the axial thrust on the main blocking net tend to balance. Simultaneously, the elastic element transmits the load to the sensor, causing the sensor to generate a corresponding electrical signal. The secondary blocking net moves synchronously with the main blocking net. Under normal water supply conditions, only the non-perforated section moves out of the receiving chamber, continuing to isolate the blocking chamber from the expansion chamber, allowing the secondary blocking element to adapt to normal water flow fluctuations without prematurely opening the expansion passage. The control system compares the electrical signal generated by the sensor with the normal signal range corresponding to the current water supply power or volume to determine whether the main blocking net is in a normal flow state.

[0014] As the filtration process continues, the amount of fine impurities trapped on the water-facing side of the main blocking screen gradually increases, reducing its effective flow area and increasing its flow resistance. With the water supply system operating unchanged, the pressure difference across the main blocking screen increases, further increasing the axial thrust and propelling the main blocking screen further towards the purified water chamber. The main blocking screen further compresses the elastic element via a sliding rod, causing the electrical signal generated by the sensor to gradually increase. When this signal exceeds the normal range corresponding to the current water supply conditions, the control system determines that the main blocking screen is blocked and issues a warning.

[0015] As the main blocking net continues to move, the secondary blocking net moves out of the receiving chamber simultaneously. When its perforated section moves out of the receiving chamber, the blocking chamber and the expansion chamber are opened, and seawater in the blocking chamber begins to pass through the perforated section into the expansion chamber, and then flows into the clean water chamber. Since the seawater entering the expansion chamber still needs to be filtered by the secondary blocking net, untreated impurities will not directly enter the cooling system; at the same time, the secondary blocking net forms a supplementary filtration path, increasing the flow area, so that even if the main blocking net is blocked, a certain supply of cooling seawater can still be maintained, allowing time for generator load reduction, shutdown, and subsequent maintenance.

[0016] Furthermore, the restorer includes a rotating drum, which is rotatably mounted on a slide rod. The rotating drum has a threaded groove and is movably connected to the detection sleeve. Several scrapers are mounted on the rotating drum, and the scrapers are in close contact with the main blocking net.

[0017] When the blockage in the main blocking network continues to worsen, and the supplementary flow capacity provided by the secondary blocking network is insufficient to eliminate the continuously rising pressure differential, the secondary blocking component moves further to its limit position. The sliding rod compresses the elastic element to a set degree, and the sensor generates a peak signal accordingly. Upon receiving the peak signal, the control system controls the telescopic component to push the convex ball out, causing it to enter the threaded groove on the rotating drum, and issues a maintenance alarm. At this time, the control system first reduces the load on the generator or shuts it down, and maintains the supply of cooling seawater until the generator assembly completes the necessary residual heat cooling. Then, it shuts off the normal seawater supply to prevent the unit from suddenly losing cooling at a high temperature.

[0018] Furthermore, the limiter includes a telescopic component, which is installed inside the detection sleeve. A convex ball is installed on the output shaft of the telescopic component, and the convex ball can engage with the threaded groove.

[0019] The telescopic component can be an electric telescopic pole.

[0020] After the normal seawater supply is shut off, the control system opens the electric valve at the bottom of the blocking chamber and reverses the flow of clean rinsing water into the clean water chamber from the connection end. Once the forward water flow thrust on the main blocking net disappears, the elastic element releases its stored elastic potential energy, pushing the slide bar and secondary blocking elements back to their initial positions. The force exerted by the reverse water flow on the main blocking net is in the same direction as the reset of the elastic element, thus assisting the secondary blocking elements in resetting. Because the convex ball remains embedded in the threaded groove, the rotating drum rotates as it retracts axially with the slide bar, guided by the threaded groove, and drives the scraper to rotate relative to the main blocking net, scraping away or loosening impurities adhering to its water-facing surface.

[0021] Meanwhile, the secondary blocking net gradually retreats into the receiving cavity, and axial relative sliding occurs between its inner wall and the recovery ring. The scraper structure at the end of the recovery ring scrapes away impurities adhering to the inner wall of the secondary blocking net. Before the perforated section of the secondary blocking net has completely exited the flow-through position, the backwash water entering the expansion cavity flows from the outside to the inside of the secondary blocking net, flushing the loosened impurities into the blocking cavity. After passing through the main blocking net, the backwash water similarly carries the impurities removed by the scraper into the blocking cavity and flushes the backwater side of the primary blocking element. The detached large and small impurities are finally discharged from the drain outlet with the backwash water.

[0022] After the secondary blocking component resets, the control system retracts the telescopic component, causing the convex ball to exit the threaded groove. Then, the backflushing water supply stops and the drain outlet is closed. Once the treatment tank returns to its initial filtration state, normal seawater supply is restarted, allowing the seawater pretreatment mechanism to continue supplying water to the cooling system.

[0023] Furthermore, the processing box has an inlet end at one end and a connection end at the other end, which is connected to the cooling system water inlet pipe.

[0024] Furthermore, the main blocking network adopts a circular structure, while the secondary blocking network adopts a ring-shaped structure.

[0025] Both the main blocking net and the secondary blocking net consist of a rigid mesh frame and a composite mesh surface. The rigid mesh frame maintains the stability of the two when connected and moved, while the composite mesh surface blocks small impurities by setting mesh holes of different diameters.

[0026] Furthermore, the secondary blocking network has a perforated section and a perforated section, and the perforated section is connected to the connecting ring.

[0027] Compared with the prior art, the beneficial effects of the present invention are: 1. By using primary and secondary blocking components to intercept impurities of different particle sizes in seawater, the possibility of impurities entering the cooling system can be reduced, thus reducing the occurrence of blockages and scaling in heat exchangers and cooling pipes, and ensuring the cleanliness of the cooling seawater.

[0028] 2. Utilizing the characteristic that the pressure difference increases after the main blocking network is blocked, its axial displacement is converted into a pressure signal of the sensor, which can be combined with the current water supply conditions to judge the flow status of the main blocking network; when the blockage intensifies, the secondary blocking network automatically forms a supplementary filtration path, which increases the effective flow area while maintaining seawater filtration, and reserves buffer time for generator load reduction or maintenance.

[0029] 3. Utilizing the resetting effect of the elastic element, the rotating drum retracts and rotates while engaging the threaded groove and the convex ball, thereby driving the scraper to clean the main blocking screen; at the same time, the recovery ring scrapes off the secondary blocking screen and the backwash water reverses the flushing, which can concentrate and discharge the impurities trapped in each filter part, so as to restore the filtration capacity.

[0030] 4. By integrating the cooling system with the generator body and forming a continuous staged heat exchange path for the circulating coolant, seawater, and high-temperature exhaust gas, the generator body, circulating coolant, and exhaust gas can be cooled sequentially, improving seawater utilization and overall heat exchange efficiency. Flue gas mixing can also reduce exhaust temperature and noise, while the shock absorber can reduce the transmission of unit vibration to the generator box, improving the overall operational stability of the unit. Attached Figure Description

[0031] Figure 1 This is a perspective view of the generator of the present invention; Figure 2 The three-dimensional representation of the generator of the present invention Figure 1 ; Figure 3 The three-dimensional representation of the generator of the present invention Figure 2 ; Figure 4 A cross-section of the pretreatment mechanism of the present invention. Figure 1 ; Figure 5 A cross-section of the pretreatment mechanism of the present invention. Figure 2 ; Figure 6 For the present invention Figure 5 A magnified view of a portion of region A in the middle; Figure 7 This is a perspective view of the detection processor and secondary blocking device of the present invention; Figure 8 For the present invention Figure 7 A magnified view of a portion of region B in the middle; Figure 9 This is a perspective view of the restorer of the present invention; Figure 10 This is a perspective view of the threaded groove of the present invention; Figure 11 This is a perspective view of the limiter of the present invention.

[0032] In the diagram: 1. Generator box; 2. Motor assembly; 3. Cooling system; 4. Frequency converter; 5. Shock absorber; 6. Pre-treatment mechanism; 61. Treatment box; 62. Primary blocking component; 63. Detection processor; 64. Secondary blocking component; 611. Inlet end; 612. Blocking chamber; 613. Expansion chamber; 614. Connecting end; 615. Purified water chamber; 616. Receiving chamber; 617. Restoration ring; 631. Detection sleeve; 632. Restorer; 633. Elastic component; 634. Slide rod; 635. Limiter; 636. Sensor; 6321. Rotary drum; 6322. Scraper; 6323. Threaded groove; 6351. Telescopic component; 6352. Convex ball; 641. Main blocking net; 642. Connecting ring; 643. Secondary blocking net; 6431. Holeless section; 6432. Perforated section. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-8 and Figure 11 The first embodiment of the present invention shown is a multiphase flow integrated cooling marine generator, including a generator box 1 and a pretreatment mechanism 6. A motor assembly 2 is installed in the generator box 1, a cooling system 3 is installed in the generator box 1, a plurality of shock absorbers 5 are provided in the generator box 1, the shock absorbers 5 are connected to the bottom end of the motor assembly 2, and a frequency converter 4 is installed in the generator box 1. The pretreatment mechanism 6 includes a treatment box 61, which is connected to the water inlet pipe of the cooling system 3. The treatment box 61 is provided with a blocking cavity 612. A primary blocking component 62 is installed on one side of the blocking cavity 612, and a secondary blocking component 64 is movably installed on the other side of the blocking cavity 612. A detection processor 63 is installed on the primary blocking component 62, and the detection end of the detection processor 63 is connected to the secondary blocking component 64. The treatment box 61 is provided with a clean water cavity 615, which is located on one side of the secondary blocking component 64. The treatment box 61 is provided with an expansion cavity 613, which is connected to the clean water cavity 615.

[0035] The processing box 61 has an inlet end 611 at one end and a connection end 614 at the other end, which is connected to the water inlet pipe of the cooling system 3.

[0036] The generator is connected to an external control system, which can operate the entire generator. The primary blocking component 62 adopts a grid structure to block large impurities in seawater. The bottom of the blocking cavity 612 is equipped with a drain port, which is fitted with an electric valve.

[0037] After the motor assembly 2 starts, its power end drives the generator end to operate and generate electrical energy. The generated electrical energy is regulated by the frequency converter 4 and output to the outside at a set voltage and frequency. The internal circulating coolant first absorbs the heat generated by the motor assembly 2, and then enters the seawater heat exchanger to exchange heat with the pretreated low-temperature seawater. The cooled circulating coolant returns to the motor assembly 2 for continuous cooling, while the heat-absorbing seawater continues to enter the flue gas mixing discharge structure to mix with the high-temperature exhaust gas generated by the motor assembly 2. After reducing the exhaust gas temperature and emission noise, they are discharged together. This achieves a multi-phase synergistic cooling effect on the heat-generating components, liquid cooling medium, and gaseous exhaust gas through a specific flow relationship between the internal circulating coolant, external seawater, and high-temperature exhaust gas, improving the utilization rate of the cooling medium and the overall heat exchange efficiency. At the same time, each shock absorber 5 buffers the vibration generated by the operation of the motor assembly 2, reducing the transmission of vibration to the generator box 1.

[0038] The detection processor 63 includes a detection sleeve 631, which is mounted on the primary blocking member 62. A sensor 636 is installed inside the detection sleeve 631. A slide rod 634 is slidably mounted inside the detection sleeve 631. An elastic member 633 is installed between the slide rod 634 and the sensor 636. A restorer 632 is rotatably mounted on the slide rod 634 and is movably connected to the detection sleeve 631. A limiter 635 is installed inside the detection sleeve 631. One end of the slide rod 634 passes through the sensor 636 and connects to the secondary blocking member 64. The sensor 636 can be a pressure sensor. The elastic member 633 can be a spring.

[0039] The secondary blocking component 64 includes a main blocking net 641, a connecting ring 642 installed on the outer edge of the main blocking net 641, a secondary blocking net 643 installed on the connecting ring 642, and the main blocking net 641 connected to the sliding rod 634; The processing box 61 is equipped with a recovery ring 617, which forms a receiving cavity 616 with the inner wall of the processing box 61. The secondary blocking net 643 is movably connected to the receiving cavity 616, and the recovery ring 617 is in close contact with the inner wall of the secondary blocking net 643. The end of the recovery ring 617 adopts a scraper structure.

[0040] The main blocking net 641 adopts a circular structure, while the secondary blocking net 643 adopts a ring-shaped structure.

[0041] Both the main blocking net 641 and the secondary blocking net 643 are composed of a rigid mesh frame and a composite mesh surface. The rigid mesh frame maintains the stability of the two when connected and moved, and the composite mesh surface blocks small impurities by setting mesh holes of different diameters.

[0042] The secondary blocking net 643 has a holeless section 6431 and a perforated section 6432. The holeless section 6431 is connected to the connecting ring 642.

[0043] The limiter 635 includes a telescopic component 6351, which is installed inside the detection sleeve 631. A convex ball 6352 is mounted on the output shaft of the telescopic component 6351, and the convex ball 6352 can engage with the threaded groove 6323. The telescopic component 6351 can be an electric telescopic rod.

[0044] like Figures 9-10 The second embodiment of the present invention, shown, provides a restorer 632 different from that in the first embodiment. It includes a rotating cylinder 6321, rotatably mounted on a slide rod 634. The rotating cylinder 6321 has a threaded groove 6323 and is movably connected to a detection sleeve 631. A plurality of scrapers 6322 are mounted on the rotating cylinder 6321, and the scrapers 6322 are in close contact with the main blocking mesh 641. When the secondary blocking component 64 retracts and resets, the restorer 632 converts the axial movement of the slide rod 634 into the rotational movement of the rotating cylinder 6321, thereby driving the scrapers 6322 to clean the adhering impurities on the surface of the main blocking mesh 641 and assisting the filter structure to return to its initial working state.

[0045] The working principle of this invention is as follows: During operation, the water supply pipeline delivers seawater to the inlet 611 of the treatment tank 61. The primary blocking component 62 first intercepts large impurities in the seawater. The pre-filtered seawater enters the blocking chamber 612 and passes through the main blocking net 641 into the clean water chamber 615. The main blocking net 641 further traps smaller particles such as silt. The treated seawater enters the cooling system 3 through the connection end 614 to provide cooling water for the unit.

[0046] After seawater enters the blocking chamber 612, it acts on the main blocking net 641 along the water flow direction. Because the main blocking net 641 resists the seawater flow, a pressure difference is generated between its upstream and downstream sides. This pressure difference acts on the main blocking net 641, creating an axial thrust along the water flow direction, causing the main blocking net 641 to drive the sliding rod 634 to slide within the detection sleeve 631. As the sliding rod 634 moves, it gradually compresses the elastic element 633 until the reaction force of the elastic element 633 and the axial thrust on the main blocking net 641 tend to balance. Simultaneously, the elastic element 633 transmits the load to the sensor 636, causing the sensor 636 to generate a corresponding electrical signal. The secondary blocking net 643 moves synchronously with the main blocking net 641. Under normal water supply conditions, only the non-porous section 6431 moves out of the receiving chamber 616, continuing to isolate the blocking chamber 612 from the expansion chamber 613, allowing the secondary blocking element 64 to adapt to normal water flow fluctuations without prematurely opening the expansion passage. The control system compares the electrical signal generated by the sensor 636 with the normal signal range corresponding to the current water supply power or water supply volume, thereby determining whether the main blocking network 641 is in a normal flow state.

[0047] As the filtration process continues, the amount of fine impurities trapped on the water-facing side of the main blocking net 641 gradually increases, reducing its effective flow area and increasing its flow resistance. With the water supply device operating unchanged, the pressure difference across the main blocking net 641 increases, further increasing the axial thrust and propelling it further towards the purified water chamber 615. The main blocking net 641 further compresses the elastic element 633 via the slide rod 634, causing the electrical signal generated by the sensor 636 to gradually increase. When this signal exceeds the normal range corresponding to the current water supply condition, the control system determines that the main blocking net 641 is blocked and issues a warning.

[0048] As the main blocking net 641 continues to move, the secondary blocking net 643 simultaneously moves out of the receiving cavity 616. When its perforated section 6432 moves out of the receiving cavity 616, the blocking cavity 612 and the expansion cavity 613 are connected, and the seawater in the blocking cavity 612 begins to pass through the perforated section 6432 into the expansion cavity 613, and then flows from the expansion cavity 613 into the clean water cavity 615. Since the seawater entering the expansion cavity 613 still needs to be filtered by the secondary blocking net 643, untreated impurities will not directly enter the cooling system 3; at the same time, the secondary blocking net 643 forms a supplementary filtration passage, increases the flow area, and allows a certain supply of cooling seawater to be maintained even after the main blocking net 641 is blocked, reserving time for generator load reduction, shutdown, and subsequent maintenance.

[0049] When the blockage of the main blocking network 641 continues to worsen, and the supplementary flow capacity provided by the secondary blocking network 643 is insufficient to eliminate the continuously rising pressure difference, the secondary blocking member 64 moves further to its limit position. The slide rod 634 compresses the elastic member 633 to a set degree, and the sensor 636 generates a peak signal accordingly. After receiving the peak signal, the control system controls the telescopic member 6351 to push the convex ball 6352 out, so that the convex ball 6352 enters the threaded groove 6323 on the rotating drum 6321, and issues a maintenance alarm. At this time, the control system first reduces the load or shuts down the generator, and maintains the supply of cooling seawater until the generator assembly 2 completes the necessary residual heat cooling, and then shuts off the normal seawater supply to prevent the unit from suddenly losing cooling at a high temperature.

[0050] After the normal seawater supply is shut off, the control system opens the electric valve at the bottom of the blocking chamber 612 and reversely delivers clean rinsing water to the clean water chamber 615 through the connection end 614. After the forward water flow thrust on the main blocking net 641 disappears, the elastic element 633 releases its stored elastic potential energy, pushing the slide rod 634 and the secondary blocking element 64 back to their initial positions; the force exerted by the reverse water flow on the main blocking net 641 is consistent with the reset direction of the elastic element 633, thereby assisting the secondary blocking element 64 in resetting. Since the convex ball 6352 remains embedded in the threaded groove 6323, the rotating drum 6321 rotates as it is guided by the threaded groove 6323 during the axial retraction of the slide rod 634, and drives the scraper 6322 to rotate relative to the main blocking net 641, scraping away or loosening the impurities attached to its water-facing surface.

[0051] Meanwhile, the secondary blocking net 643 gradually retreats into the receiving cavity 616, and axial relative sliding occurs between its inner wall and the restoration ring 617. The scraper structure at the end of the restoration ring 617 scrapes away the impurities attached to the inner wall of the secondary blocking net 643. Before the perforated section 6432 of the secondary blocking net 643 has completely exited the flow-through position, the backwash water entering the expansion cavity 613 flows from the outside to the inside of the secondary blocking net 643, flushing the loosened impurities into the blocking cavity 612. After passing through the main blocking net 641, the backwash water also carries the impurities removed by the scraper 6322 into the blocking cavity 612 and flushes the backwater side of the primary blocking element 62. The detached large and small impurities are finally discharged from the drain outlet with the backwash water.

[0052] After the secondary blocking component 64 is reset, the control system controls the telescopic component 6351 to retract, causing the convex ball 6352 to exit the threaded groove 6323. Subsequently, the backflushing water supply is stopped and the drain outlet is closed. After the treatment tank 61 returns to its initial filtration state, the normal seawater supply is restarted, allowing the seawater pretreatment mechanism 6 to continue supplying water to the cooling system 3.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multiphase flow integrated cooling marine generator, characterized in that: The generator includes a generator box (1) and a pretreatment mechanism (6). A motor assembly (2) is installed inside the generator box (1). A cooling system (3) is installed inside the generator box (1). Several shock absorbers (5) are provided inside the generator box (1). The shock absorbers (5) are connected to the bottom of the motor assembly (2). A frequency converter (4) is installed inside the generator box (1). The pretreatment mechanism (6) includes a treatment box (61), which is connected to the water inlet pipe of the cooling system (3). The treatment box (61) is provided with a blocking cavity (612). A primary blocking component (62) is installed on one side of the blocking cavity (612), and a secondary blocking component (64) is movably installed on the other side of the blocking cavity (612). A detection processor (63) is installed on the primary blocking component (62), and the detection end of the detection processor (63) is connected to the secondary blocking component (64). The treatment box (61) is provided with a clean water cavity (615), which is located on one side of the secondary blocking component (64). The treatment box (61) is provided with an expansion cavity (613), which is connected to the clean water cavity (615).

2. The multiphase flow integrated cooling marine generator according to claim 1, characterized in that: The detection processor (63) includes a detection sleeve (631), which is mounted on a primary blocking member (62). A sensor (636) is installed inside the detection sleeve (631). A slide rod (634) is slidably installed inside the detection sleeve (631). An elastic member (633) is installed between the slide rod (634) and the sensor (636). A restorer (632) is rotatably installed on the slide rod (634). The restorer (632) is movably connected to the detection sleeve (631). A limiter (635) is installed inside the detection sleeve (631). One end of the slide rod (634) passes through the sensor (636) and is connected to the secondary blocking member (64).

3. A multiphase flow integrated cooling marine generator according to claim 2, characterized in that: The secondary blocking component (64) includes a main blocking net (641), a connecting ring (642) is installed on the outer edge of the main blocking net (641), a secondary blocking net (643) is installed on the connecting ring (642), and the main blocking net (641) is connected to the slide rod (634). The processing box (61) is provided with a recovery ring (617), and the recovery ring (617) and the inner wall of the processing box (61) form a receiving cavity (616). The secondary blocking net (643) is movably connected to the receiving cavity (616), and the recovery ring (617) is close to the inner wall of the secondary blocking net (643).

4. A multiphase flow integrated cooling marine generator according to claim 3, characterized in that: The restorer (632) includes a rotating cylinder (6321), which is rotatably mounted on a slide rod (634). The rotating cylinder (6321) is provided with a threaded groove (6323). The rotating cylinder (6321) is movably connected to the detection sleeve (631). Several scrapers (6322) are installed on the rotating cylinder (6321), and the scrapers (6322) are close to the main blocking net (641).

5. A multiphase flow integrated cooling marine generator according to claim 4, characterized in that: The limiter (635) includes a telescopic component (6351), which is installed inside the detection sleeve (631). A convex ball (6352) is installed on the output shaft of the telescopic component (6351), and the convex ball (6352) can engage with the threaded groove (6323).

6. A multiphase flow integrated cooling marine generator according to any one of claims 1-5, characterized in that: The processing box (61) has an inlet end (611) at one end and a connection end (614) at the other end, which is connected to the water inlet pipe of the cooling system (3).

7. A multiphase flow integrated cooling marine generator according to claim 3, characterized in that: The main blocking net (641) adopts a circular structure, and the secondary blocking net (643) adopts a ring-shaped structure.

8. A multiphase flow integrated cooling marine generator according to claim 3 or 7, characterized in that: The sub-blocking net (643) is provided with a non-perforated section (6431) and a perforated section (6432), and the non-perforated section (6431) is connected to the connecting ring (642).

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