CN118815578A - A circulating cooling device for internal combustion engine of large diesel generator set - Google Patents

Abstract

The invention discloses a circulating cooling device of an internal combustion engine of a large diesel generating set, which belongs to the technical field of cooling systems, wherein a first cooling mechanism, a second cooling mechanism and a water storage tank are arranged in a second cooling shell, cooling boxes are arranged on two sides of the diesel generating set, one cooling box is communicated with a third oil storage box, the third oil storage box is communicated with the first cooling mechanism in the second cooling shell through a first oil pipe, the outer circumference of the diesel generating set is provided with the first cooling shell, and the other cooling box is communicated with the first cooling shell through a sixth oil pipe. According to the invention, the diesel generator set cools the diesel generator set through the cooling box and the circulating oil in the first cooling shell, the connecting pipe, the cooling box and the circulating oil in the first cooling shell are mutually communicated with the first cooling mechanism and the second cooling mechanism, and the first cooling mechanism and the second cooling mechanism cool the circulating oil, so that the efficient operation of the diesel generator system is ensured, and the diesel generator system has the advantages of good cooling effect and energy cost saving.

Description

A circulating cooling device for internal combustion engine of large diesel generator set

Technical Field

The invention belongs to the technical field of cooling systems, and in particular relates to a circulating cooling device for an internal combustion engine of a large diesel generator set.

Background Art

An internal combustion engine generator set refers to a device that uses an internal combustion engine to drive a generator to supply power. The internal combustion engine of a large diesel generator set needs to be equipped with a circulating cooling device to ensure that the engine maintains an appropriate operating temperature during operation, prevents overheating damage, and improves its efficiency and reliability.

The existing large diesel generator set internal combustion engine circulating cooling device adopts a water cooling system, which requires a large volume water tank and needs to add cooling water frequently during use, which increases the complexity of operation and maintenance, and increases the energy consumption and operating cost of the entire system. At the same time, it cannot provide sufficient cooling effect under high temperature or high load conditions, causing the operating temperature of the generator set to exceed the ideal range, thereby affecting its performance and life.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a circulating cooling device for the internal combustion engine of a large diesel generator set which has good cooling effect and saves energy cost.

The technical solution adopted to solve the above technical problems is: a second cooling shell is arranged on one side of the diesel generator set, a first cooling mechanism, a second cooling mechanism and a water storage tank for cooling the circulating oil are arranged inside the second cooling shell, the first cooling mechanism and the second cooling mechanism are communicated with each other, cooling boxes for cooling the diesel generator set are arranged on both sides, the two cooling boxes are communicated with each other through a plurality of connecting pipes, one of the cooling boxes is communicated with a third oil storage tank, the third oil storage tank stores circulating oil, the third oil storage tank is communicated with the first cooling mechanism in the second cooling shell through a first oil pipe, a first cooling shell that is communicated with the third oil storage tank is arranged on the outer circumference of the diesel generator set, another cooling box is communicated with the first cooling shell through a sixth oil pipe, and the first cooling shell is communicated with the second cooling mechanism in the second cooling shell; the first cooling mechanism is: the second cooling shell A lower shell body is provided inside the body and is interconnected with the lower shell body, an exchanger box body is provided on the lower shell body, a plurality of heat exchangers for heat exchange of circulating oil are provided inside the exchanger box body, the outlet end of the heat exchanger is interconnected with the interior of the lower shell body, a plurality of telescopic rods are provided on the top of the exchanger box body, an upper cover shell body is provided on the upper end of the telescopic rod, the upper cover shell body and the second oil pipe are interconnected, a spring is provided on each telescopic rod, one end of each spring is fixedly connected to the bottom of the upper cover shell body, and the other end of each spring is connected to the telescopic rod, a heat sink plate for dissipating the circulating oil is provided inside the upper cover shell body, oil leakage holes are evenly processed on the heat sink plate, a sliding plate is slidably connected to the bottom of the heat sink plate in a horizontal direction, the sliding plate is evenly processed with through holes interconnected with the oil leakage holes, the through holes are interconnected with the inlet end of the heat exchanger, the sliding plate is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the top of the exchanger box body.

Furthermore, a first pump casing is arranged on the second cooling shell, and a first partition and a second partition are arranged inside the first pump casing to divide the interior of the first pump casing into a first chamber, a second chamber and a third chamber, first impellers are respectively arranged inside the first chamber, the second chamber and the third chamber, and a first motor is arranged on one side of the first pump casing to drive each first impeller to rotate, the fifth oil pipe is interconnected with the fourth oil pipe through the first chamber, the fourth oil pipe is interconnected with the second cooling mechanism, the third oil storage tank is interconnected with the third chamber through the first oil pipe, and the third chamber is interconnected with the first cooling mechanism through the second oil pipe.

Furthermore, the top of the heat sink is a corrugated plate.

Furthermore, the second cooling mechanism is as follows: a first oil storage tank is arranged inside the second cooling shell, a fixed plate is arranged on one side of the water storage tank, a second oil storage tank located on the top of the first oil storage tank is arranged on the fixed plate, oil outlet holes are evenly processed on the top of the second oil storage tank, an upper shell is arranged on the second oil storage tank, and the upper shell is processed into inclined side walls on all sides, and inclined grooves for sliding of circulating oil are processed on the inclined side walls of the upper shell, and the circulating oil in the second oil storage tank enters the first oil storage tank through the oil outlet holes and the inclined grooves in sequence.

Furthermore, the second chamber inside the first pump casing is connected to the interior of the second cooling casing through the seventh oil pipe, the second chamber is connected to the second oil storage tank through the third oil pipe, the fifth oil pipe is connected to the first chamber inside the first pump casing, and the first chamber inside the first pump casing is connected to the first oil storage tank through the fourth oil pipe.

Furthermore, a support frame located above the upper shell is arranged on the top of the second cooling shell, and a second motor for driving the fan to rotate is arranged on the support frame, and the second motor cools down the circulating oil in the first oil storage tank.

Furthermore, the water tank is provided with an automatic water inlet mechanism, which is: a second pump casing and a third motor are provided on the top of the water tank, a second impeller is rotatably installed inside the second pump casing, an output shaft of the third motor is fixedly connected to the second impeller, a water inlet pipe is connected to the inside of the water tank through the second pump casing, and a steam pipe is processed at the outlet end of the water tank.

Furthermore, a second fixed rod is arranged on the top of the water tank, a sliding rod is connected to the second fixed rod in a vertical sliding direction, a first pressure sensor in contact with the sliding rod is arranged on the upper top plate at the top of the second fixed rod, a second pressure sensor in contact with the sliding rod is arranged on the lower bottom plate at the bottom of the second fixed rod, the sliding rod is fixedly connected to the sliding rod, a fixed cylinder is arranged inside the water tank, and a float is arranged inside the fixed cylinder.

The beneficial effects of the present invention are as follows: (1) The present invention adopts a diesel generator set to cool down the circulating oil in the cooling box and the first cooling shell. The connecting pipe, the cooling box and the circulating oil in the first cooling shell are interconnected with the first cooling mechanism and the second cooling mechanism. The first cooling mechanism and the second cooling mechanism cool down the circulating oil, thereby ensuring the efficient operation of the diesel generator system, and having the advantages of good cooling effect and saving energy cost; (2) The present invention adopts a wave plate as the heat sink in the first cooling structure for cooling down. During the descending process of the upper cover shell, the sliding plate moves to the through hole and the oil leakage hole to be interconnected, and enters the heat exchanger to exchange heat and cool down the circulating oil. The second cooling mechanism uses the circulating oil in the second oil storage tank to spray out through the oil outlet hole into the inclined slide groove on the upper shell. The inclined slide groove facilitates partial cooling of the circulating oil. The fan cools down the circulating oil during rotation; (3) The present invention adopts the water in the water storage tank to cool down the inside of the second cooling shell. Since the temperature of the circulating oil is relatively high, the water vapor evaporated from the water in the water storage tank is emitted through the steam pipe, and the water level in the water storage tank can be automatically adjusted according to the change of the water level in the water storage tank.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of a circulating cooling device for an internal combustion engine of a large diesel generator set according to the present invention;

FIG2 is a schematic structural diagram of FIG1 from another angle;

FIG3 is a schematic diagram of the structure of FIG1 with some parts removed;

FIG4 is a schematic diagram of the structure of the interior of the first pump casing;

FIG5 is a schematic structural diagram of a first cooling mechanism;

FIG6 is a schematic diagram of the structure of FIG5 with some parts removed;

FIG7 is a schematic diagram of the structure of FIG6 without the upper cover shell;

FIG8 is a schematic structural diagram of a heat exchanger;

FIG9 is a schematic diagram of the structure of the connecting rod and the sliding plate;

FIG10 is a schematic structural diagram of a second cooling mechanism;

11 is a schematic diagram of the parts structure of the second oil storage tank;

FIG12 is a schematic diagram of the parts structure on the support frame;

FIG13 is a schematic diagram of the structure of a second motor and a fan;

FIG14 is a schematic structural diagram of an automatic water inlet mechanism;

15 is a schematic diagram of the structural parts of the sliding rod and the floating ball;

FIG. 16 is a schematic diagram of the structure of the third motor and the second impeller.

Figure numerals: 1, connecting pipe; 2, cooling box; 3, first cooling shell; 401, exchanger box; 402, connecting rod; 403, telescopic rod; 404, spring; 405, upper cover shell; 406, heat exchanger; 407, lower shell; 408, heat sink; 409, oil leakage hole; 410, sliding plate; 411, through hole; 501, first oil storage tank; 502, second oil storage tank; 503, oil outlet hole; 504, upper shell; 505, inclined slide; 506, fixing plate; 507, second motor; 508, fan; 509, support frame; 601, second pump shell; 602, water inlet pipe; 603, the third motor; 604, the second fixed rod; 605, the steam pipe; 606, the upper top plate; 607, the sliding rod; 608, the sliding rod; 609, the floating ball; 610, the fixed cylinder; 611, the lower bottom plate; 612, the second impeller; 7, the second cooling shell; 8, the first oil pipe; 9, the third oil storage tank; 10, the diesel generator set; 11, the second oil pipe; 12, the third oil pipe; 13, the first pump casing; 14, the fourth oil pipe; 15, the fifth oil pipe; 16, the sixth oil pipe; 17, the seventh oil pipe; 18, the first motor; 19, the first partition; 20, the second partition; 21, the first impeller; 22, the water storage tank.

DETAILED DESCRIPTION

In order to make the purpose, technical solution 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.

As shown in Figures 1 to 4, the circulating cooling device of the internal combustion engine of a large diesel generator set of this embodiment is composed of a connecting pipe 1, a cooling box 2, a first cooling shell 3, a first cooling mechanism, a second cooling mechanism, an automatic water inlet mechanism, a second cooling shell 7, a first oil pipe 8, a third oil storage tank 9, a diesel generator set 10, a second oil pipe 11, a third oil pipe 12, a first pump casing 13, a fourth oil pipe 14, a fifth oil pipe 15, a sixth oil pipe 16, a seventh oil pipe 17, a first motor 18, a first partition plate 19, a second partition plate 20, a first impeller 21, and a water storage tank 22.

A second cooling shell 7 is arranged on one side of the diesel generator set 10, and a first cooling mechanism, a second cooling mechanism and a water storage tank 22 for cooling the circulating oil are arranged inside the second cooling shell 7, and the first cooling mechanism is connected to the second cooling mechanism. Cooling boxes 2 for cooling the diesel generator set 10 are arranged on both sides, and the two cooling boxes 2 are connected to each other through a plurality of connecting pipes 1, one of the cooling boxes 2 is connected to a third oil storage tank 9, and circulating oil is stored in the third oil storage tank 9, and the third oil storage tank 9 is connected to the first cooling mechanism in the second cooling shell 7 through a first oil pipe 8. A first cooling shell 3 connected to the third oil storage tank 9 is arranged on the outer circumference of the diesel generator set 10, and another cooling box 2 is connected to the first cooling shell 3 through a sixth oil pipe 16, and the first cooling shell 3 is connected to the second cooling mechanism in the second cooling shell 7.

A first pump casing 13 is arranged on the second cooling shell 7, and a first partition plate 19 and a second partition plate 20 are arranged inside the first pump casing 13 to divide the interior of the first pump casing 13 into a first chamber, a second chamber and a third chamber, first impellers 21 are arranged inside the first chamber, the second chamber and the third chamber respectively, and a first motor 18 is arranged on one side of the first pump casing 13 to drive each first impeller 21 to rotate, the fifth oil pipe 15 is interconnected with the fourth oil pipe 14 through the first chamber, the fourth oil pipe 14 is interconnected with the second cooling mechanism, the third oil storage tank 9 is interconnected with the third chamber through the first oil pipe 8, and the third chamber is interconnected with the first cooling mechanism through the second oil pipe 11.

As shown in Figures 5 to 9, the first cooling mechanism is composed of an exchanger box 401, a connecting rod 402, a telescopic rod 403, a spring 404, an upper cover shell 405, a heat exchanger 406, a lower shell 407, a heat sink 408, an oil leakage hole 409, a sliding plate 410, and a through hole 411.

The first cooling mechanism is as follows: the second cooling shell 7 is provided with a lower shell 407 interconnected therewith, the lower shell 407 is provided with an exchanger box 401, the exchanger box 401 is provided with a plurality of heat exchangers 406 for heat exchange of circulating oil, the outlet end of the heat exchanger 406 is interconnected with the lower shell 407, a plurality of telescopic rods 403 are provided on the top of the exchanger box 401, an upper cover shell 405 is provided on the upper end of the telescopic rod 403, the upper cover shell 405 is interconnected with the second oil pipe 11, each telescopic rod 403 is provided with a spring 404, one end of each spring 404 is respectively fixed to the bottom of the upper cover shell 405 The top of the heat sink 408 is a corrugated plate, and the heat sink 408 is evenly processed with oil leakage holes 409. The bottom of the heat sink 408 is slidably connected with a sliding plate 410 in a horizontal direction. The sliding plate 410 is evenly processed with through holes 411 that are interconnected with the oil leakage holes 409. The through holes 411 are interconnected with the inlet end of the heat exchanger 406. The sliding plate 410 is rotatably connected to one end of the connecting rod 402, and the other end of the connecting rod 402 is rotatably connected to the top of the exchanger box 401.

As shown in Figures 10 to 13, the second cooling mechanism is composed of a first oil storage tank 501, a second oil storage tank 502, an oil outlet 503, an upper shell 504, an inclined slide 505, a fixing plate 506, a second motor 507, a fan 508, and a support frame 509.

The second cooling mechanism is as follows: a support frame 509 located above the upper shell 504 is arranged on the top of the second cooling shell 7, a second motor 507 driving the fan 508 is arranged on the support frame 509, and the second motor 507 cools down the circulating oil in the first oil storage tank 501. The first oil storage tank 501 is arranged inside the second cooling shell 7, a fixing plate 506 is arranged on one side of the water storage tank 22, a second oil storage tank 502 located on the top of the first oil storage tank 501 is arranged on the fixing plate 506, oil outlet holes 503 are uniformly processed on the top of the second oil storage tank 502, an upper shell 504 is arranged on the second oil storage tank 502, the upper shell 504 is processed into inclined side walls around, and the inclined side walls of the upper shell 504 are processed with inclined slide grooves 505 for the sliding of circulating oil, and the circulating oil in the second oil storage tank 502 enters the first oil storage tank 501 through the oil outlet holes 503 and the inclined slide grooves 505 in sequence.

The second chamber inside the first pump housing 13 is connected to the interior of the second cooling housing 7 through the seventh oil pipe 17, the second chamber is connected to the second oil storage tank 502 through the third oil pipe 12, the fifth oil pipe 15 is connected to the first chamber inside the first pump housing 13, and the first chamber inside the first pump housing 13 is connected to the first oil storage tank 501 through the fourth oil pipe 14.

As shown in Figures 14 to 16, an automatic water inlet mechanism is provided on the water tank 22, and the automatic water inlet mechanism is composed of a second pump casing 601, a water inlet pipe 602, a third motor 603, a second fixed rod 604, a steam pipe 605, an upper top plate 606, a sliding rod 607, a sliding rod 608, a float 609, a fixed cylinder 610, a lower bottom plate 611, and a second impeller 612.

The automatic water inlet mechanism is as follows: a second pump housing 601 and a third motor 603 are arranged on the top of the water tank 22, a second impeller 612 is rotatably mounted inside the second pump housing 601, an output shaft of the third motor 603 is fixedly connected to the second impeller 612, a water inlet pipe 602 is connected to the inside of the water tank 22 through the second pump housing 601, and a steam pipe 605 is processed at the outlet end of the water tank 22. A second fixed rod 604 is arranged on the top of the water tank 22, a sliding rod 607 is slidably connected in the second fixed rod 604 along the vertical direction, a first pressure sensor that contacts the sliding rod 607 is arranged on the upper top plate 606 at the top of the second fixed rod 604, a second pressure sensor that contacts the sliding rod 607 is arranged on the lower bottom plate 611 at the bottom of the second fixed rod 604, the sliding rod 607 is fixedly connected to the sliding rod 608, a fixed cylinder 610 is arranged inside the water tank 22, and a floating ball 609 is arranged inside the fixed cylinder 610.

The working principle of this embodiment is as follows: (1) First circulation cooling: During the operation of the diesel generator set 10, the diesel generator set 10 is cooled by the circulating oil in the two cooling boxes 2 and the first cooling shell 3 which are interconnected through a plurality of connecting pipes 1. The circulating oil in the connecting pipes 1, the cooling box 2 and the first cooling shell 3 enters the third oil storage tank 9. The circulating oil in the third oil storage tank 9 enters the third cavity in the first pump shell 13 through the first oil pipe 8. The output shaft of the first motor 18 drives the first impeller 21 in the first cavity, the second cavity and the third cavity to rotate. The circulating oil in the third cavity enters the upper cover shell 405 through the second oil pipe 11. The heat sink 4 in the upper cover shell 405 08 is used to cool it down. When the weight of the circulating oil in the upper cover shell 405 is heavier, the upper cover shell 405 drives the telescopic rod 403 to move downward in the vertical direction. Under the action of the connecting rod 402, the upper cover shell 405 drives the sliding plate 410 at the bottom of the heat sink 408 to move horizontally on the heat sink 408 during the descent process. The sliding plate 410 moves to the through hole 411 and is connected with the oil leakage hole 409. The circulating oil in the upper cover shell 405 enters the heat exchanger 406 in the sliding plate 410 through the oil leakage hole 409 and the through hole 411 in turn. The heat exchanger 406 performs heat exchange and cooling on the circulating oil. The cooled circulating oil enters the second cooling shell 7 through the lower shell 407.

(2) Second circulation cooling: The circulating oil in the connecting pipe 1, the cooling box 2 and the first cooling shell 3 enters the fifth oil pipe 15 through the sixth oil pipe 16. The circulating oil in the fifth oil pipe 15 enters the fourth oil pipe 14 through the first chamber in the first pump shell 13. The circulating oil in the fourth oil pipe 14 enters the first oil storage tank 501. The circulating oil in the second cooling shell 7 enters the second chamber in the first pump shell 13 through the seventh oil pipe 17. The circulating oil in the second chamber enters the third oil pipe 12. The circulating oil in the third oil pipe 12 enters the second oil storage tank 502. The circulating oil in the second oil storage tank 502 is sprayed out through the oil outlet 503 into the inclined chute 505 on the upper shell 504. The inclined chute 505 is convenient for partially cooling the circulating oil. The circulating oil continues to enter the first oil storage tank 501. At the same time, the second motor 507 at the top of the upper shell 504 drives the fan 508 to rotate. The fan 508 cools the circulating oil during the rotation process.

(3) Cooling the circulating oil with water: During the process of cooling the circulating oil by the first cooling mechanism and the second cooling mechanism, the water in the water tank 22 can also cool the inside of the second cooling shell 7. Since the temperature of the circulating oil is relatively high, the water vapor evaporated from the water in the water tank 22 is emitted through the steam pipe 605. When the water level inside the water tank 22 decreases, the float 609 decreases. The float 609 drives the slide bar 607 to move downward in the vertical direction on the second fixed rod 604 through the slide bar 608. The slide bar 607 contacts the second pressure sensor on the lower base plate 611. The second pressure sensor converts the received distance information into an electrical signal and sends it to the controller. The controller controls The third motor 603 is started, and the output shaft of the third motor 603 drives the second impeller 612 in the second pump housing 601 to rotate, so that the water in the water tank flows into the water storage tank 22 through the water inlet pipe 602. When the water level inside the water storage tank 22 rises, the float 609 rises, and the float 609 drives the slide bar 607 to move upward in the vertical direction on the second fixed rod 604 through the slide bar 608. The slide bar 607 conflicts with the first pressure sensor on the upper top plate 606. The first pressure sensor converts the received distance information into an electrical signal and sends it to the controller. The controller controls the third motor 603 to be turned off, and the water in the water tank no longer enters the water storage tank 22, and the water inlet stops.

The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims (8)

1. The utility model provides a large-scale diesel generating set internal-combustion engine cooling back installation which characterized in that: a second cooling shell (7) is arranged on one side of the diesel generator set (10), a first cooling mechanism, a second cooling mechanism and a water storage tank (22) for cooling circulating oil are arranged inside the second cooling shell (7), the first cooling mechanism and the second cooling mechanism are mutually communicated, cooling boxes (2) for cooling the diesel generator set (10) are arranged on two sides of the diesel generator set, the two cooling boxes (2) are mutually communicated through a plurality of connecting pipes (1), one cooling box (2) is mutually communicated with a third oil storage box (9), circulating oil is stored inside the third oil storage box (9), the third oil storage box (9) is mutually communicated with the first cooling mechanism in the second cooling shell (7) through a first oil pipe (8), the outer circumference of the diesel generator set (10) is provided with a first cooling shell (3) which is mutually communicated with the third oil storage box (9), the other cooling box (2) is mutually communicated with the first cooling shell (3) through a sixth oil pipe (16), and the first cooling shell (3) is mutually communicated with the second cooling mechanism in the second cooling shell (7);

The first cooling mechanism is as follows: a lower shell (407) which is mutually communicated with the second cooling shell (7) is arranged in the second cooling shell (7), an exchanger box (401) is arranged on the lower shell (407), a plurality of heat exchangers (406) which are used for carrying out heat exchange on circulating oil are arranged in the exchanger box (401), the outlet ends of the heat exchangers (406) are mutually communicated with the inside of the lower shell (407), a plurality of telescopic rods (403) are arranged at the tops of the exchanger box (401), an upper shell (405) is arranged at the upper ends of the telescopic rods (403), the upper shell (405) is mutually communicated with a second oil pipe (11), springs (404) are respectively arranged on each telescopic rod (403), one end of each spring (404) is fixedly connected with the bottom of the upper shell (405), the other end of each spring (404) is respectively connected with the telescopic rod (403), a heat dissipation plate (408) which is used for dissipating heat of the circulating oil is uniformly processed on the heat dissipation plate (408), a sliding plate (410) is slidingly connected with the bottom of the telescopic plate (408) along the horizontal direction, the sliding plate (410) is uniformly processed with an oil leakage hole (409), the through hole (411) is communicated with the through hole (411) is processed on the bottom of the sliding plate (410), and the through hole (411) is mutually communicated with the end of the heat dissipation plate (406) through hole (is mutually communicated with the through hole (411), the other end of the connecting rod (402) is rotationally connected with the top of the exchanger box body (401).

2. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 1, wherein: the novel cooling device is characterized in that a first pump shell (13) is arranged on the second cooling shell (7), a first partition plate (19) and a second partition plate (20) which divide the interior of the first pump shell (13) into a first cavity, a second cavity and a third cavity are arranged in the first cavity, the second cavity and the third cavity, a first impeller (21) is arranged in the first cavity, a first motor (18) which drives each first impeller (21) to rotate is arranged on one side of the first pump shell (13), a fifth oil pipe (15) is communicated with a fourth oil pipe (14) through the first cavity, the fourth oil pipe (14) is communicated with a second cooling mechanism, a third oil storage tank (9) is communicated with the third cavity through a first oil pipe (8), and the third cavity is communicated with the first cooling mechanism through a second oil pipe (11).

3. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 1, wherein: the top of the radiating plate (408) is a wave plate.

4. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 2, wherein the second cooling mechanism is: the inside first oil storage tank (501) that is provided with of second cooling body (7), storage water tank (22) one side is provided with fixed plate (506), be provided with second oil storage tank (502) that are located first oil storage tank (501) top on fixed plate (506), second oil storage tank (502) top evenly processing has oil outlet (503), be provided with on second oil storage tank (502) casing (504), upward casing (504) are processed respectively into the slope lateral wall all around, upward processing has on the slope lateral wall of casing (504) and is used for the gliding slope spout (505) of cycle oil, cycle oil in second oil storage tank (502) loops through oil outlet (503), slope spout (505) get into in first oil storage tank (501).

5. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 4, wherein: the second cavity inside the first pump shell (13) is communicated with the inside of the second cooling shell (7) through a seventh oil pipe (17), the second cavity is communicated with the second oil storage tank (502) through a third oil pipe (12), the fifth oil pipe (15) is communicated with the first cavity inside the first pump shell (13), and the first cavity inside the first pump shell (13) is communicated with the first oil storage tank (501) through a fourth oil pipe (14).

6. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 4, wherein: the top of the second cooling shell (7) is provided with a support frame (509) positioned above the upper shell (504), the support frame (509) is provided with a second motor (507) for driving a fan (508) to rotate, and the second motor (507) cools circulating oil in the first oil storage tank (501).

7. The internal combustion engine circulating cooling device of a large diesel generating set according to claim 1, wherein the water storage tank (22) is provided with an automatic water inlet mechanism, and the automatic water inlet mechanism is as follows: the top of the water storage tank (22) is provided with a second pump shell (601) and a third motor (603), a second impeller (612) is rotatably arranged in the second pump shell (601), an output shaft of the third motor (603) is fixedly connected with the second impeller (612), a water inlet pipe (602) is mutually communicated with the inside of the water storage tank (22) through the second pump shell (601), and a steam pipe (605) is processed at the outlet end of the water storage tank (22).

8. The internal combustion engine circulation cooling device of a large diesel generator set according to claim 7, wherein: the utility model discloses a water storage tank (22) top be provided with second dead lever (604), along vertical direction sliding connection in second dead lever (604) slide bar (607), upper roof (606) at second dead lever (604) top be provided with slide bar (607) contradict first pressure sensor, be provided with on lower plate (611) of second dead lever (604) bottom with slide bar (607) contradict second pressure sensor, slide bar (607) and slide bar (608) fixed connection, water storage tank (22) inside is provided with fixed section of thick bamboo (610), fixed section of thick bamboo (610) inside is provided with floater (609).