CN215057707U - Inhale sand for ship water-cooling diesel generating set cooling system - Google Patents
Inhale sand for ship water-cooling diesel generating set cooling system Download PDFInfo
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- CN215057707U CN215057707U CN202121003220.1U CN202121003220U CN215057707U CN 215057707 U CN215057707 U CN 215057707U CN 202121003220 U CN202121003220 U CN 202121003220U CN 215057707 U CN215057707 U CN 215057707U
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Abstract
The utility model belongs to the technical field of machinery, a inhale husky marine water-cooling diesel generating set cooling system is related to. The cooling system of the water-cooled diesel generator set for the sand sucking ship comprises a sea water pump; the output end of the external sea water pump is communicated with a sea water inlet III on the diesel engine, and a belt pulley is arranged at the free end of the diesel engine; the external seawater pump drives the seawater pump through a diesel engine to pump outboard seawater into the cooling system; the seawater entering the diesel engine passes through the water diversion structure to divide the seawater into two parts: one path of water is divided to a generator seawater pipeline through a water dividing structure; the other path of the high-temperature fresh water enters a seawater pipeline of the diesel engine, flows out of the diesel engine after cooling the intercooler and enters a shell-and-tube heat exchanger, meanwhile, the high-temperature fresh water of the diesel engine also flows out of the diesel engine to the shell-and-tube heat exchanger, and returns to the diesel engine after cooling of the high-temperature fresh water is completed in the shell-and-tube heat exchanger. The utility model discloses greatly increased the generating set adaptability under the great environment of silt such as inland river, coastal waters.
Description
Technical Field
The utility model belongs to the technical field of machinery, a inhale husky marine water-cooling diesel generating set cooling system is related to.
Background
A traditional marine diesel generating set adopts a high-temperature and low-temperature water dual-circulation cooling system, and low-temperature cooling water directly adopts seawater or inland river water as a cooling medium. Sea water or river water is sucked into a low-temperature pipeline of the diesel engine by a seawater pump of the diesel engine, and then sequentially cools an air cooler, a heat exchanger and the like, and finally flows out of the diesel engine.
However, the sand suction boat is used in inland rivers and offshore areas, the sand content of river water and seawater rises rapidly during sand suction operation, and after a large amount of sand enters the diesel engine, the plate-type heat exchanger and the seawater pump of the diesel engine are easily blocked, so that the heat exchange efficiency is reduced, the maintenance and replacement period of the heat exchanger and the seawater pump is shortened, and the service performance of the diesel engine is seriously influenced. In addition, when the generator set adopts a water-cooled motor, the diesel engine also needs to provide cooling water for the water-cooled motor, and the flow of a seawater pump on the original diesel engine body can not meet the water diversion requirement. The traditional scheme of the cooling system of the marine diesel generator set cannot meet the operation environment of the sand suction ship.
SUMMERY OF THE UTILITY MODEL
Comprehensively consider factors such as silt is big, water-cooled machine divides water, in order to solve above-mentioned technical problem, the utility model aims at providing an inhale husky marine water-cooling diesel generating set cooling system.
The utility model adopts the following technical scheme for accomplishing the above purpose:
a cooling system of a water-cooled diesel generating set for a sand sucking ship is provided with an external sea water pump with large flow and large lift, and is used for meeting the requirements of heavy sediment environment and water diversion of a motor; the output end of the external sea water pump is communicated with a sea water inlet III on the diesel engine, and a belt pulley used for driving the external sea water pump through a belt is arranged at the free end of the diesel engine; the external seawater pump drives the seawater pump through a diesel engine to pump outboard seawater into the cooling system; the seawater entering the diesel engine passes through the water diversion structure to divide the seawater into two parts: one path is divided into water by the water dividing structure to a generator seawater pipeline for cooling the generator; the other path of the fresh water enters a seawater pipeline of the diesel engine, flows out of the diesel engine after cooling the intercooler and enters a shell-and-tube heat exchanger, meanwhile, high-temperature fresh water of the diesel engine also flows out of the diesel engine to the shell-and-tube heat exchanger, and returns to the diesel engine after cooling of the high-temperature fresh water is completed in the shell-and-tube heat exchanger, so that high-temperature components in the diesel engine are cooled; the seawater flows out from the shell-and-tube heat exchanger and then is converged with the seawater flowing out from the generator, and is discharged to the outboard.
The shell-and-tube heat exchanger has two inlets: the diesel engine comprises a seawater inlet I and a fresh water inlet I, wherein the seawater inlet I and the fresh water inlet I are communicated with a seawater outlet I and a fresh water outlet I on the diesel engine.
The utility model provides a inhale water-cooling diesel generating set cooling system for sand ship, on the basis of former diesel generating set, use the shell and tube type heat exchanger that circulation, suitability are better and external sea water pump that flow, lift are bigger to solve the drive problem of sea water pump, the free end of diesel engine installs the belt pulley additional, uses the belt to drive large-traffic sea water pump; redesigning a cooling water pipeline behind the seawater pump, and adding a low-temperature water pipeline from the diesel engine to the water-cooling motor; the adaptability of the generator set in the environments with large sediment such as inland rivers, offshore areas and the like is greatly improved.
Drawings
Fig. 1 is a cooling system diagram of a water-cooled generator set for a sand suction vessel.
Fig. 2 is a schematic view of a seawater pipeline structure of the middle generator set of the present invention.
Fig. 3 is a schematic view of the water dividing structure of the present invention.
Fig. 4 is a schematic structural view of the middle seawater pump of the present invention.
Fig. 5 is a schematic structural diagram of the medium diesel engine driven seawater pump device of the utility model.
Fig. 6 is a schematic structural diagram of a tube-shell heat exchanger according to the present invention.
In the figure: 1. diesel engine, 2, water-cooled generator, 3, shell and tube type heat exchanger, 4, external sea water pump, 5, belt pulley, 6, water diversion structure, 7, engine sea water pipeline, 8, sea water filter, 9, outboard, 10, sea water import I, 11, fresh water import I, 12, sea water export I, 13, fresh water export I, 14, fresh water import II, 15, sea water export II, 16, sea water import III, 17, water diversion device, 18, water diversion orifice plate, 19, seal gasket.
Detailed Description
The invention is described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the cooling system of the water-cooled diesel generator set for the sand suction ship is provided with an external sea water pump 4 with large flow and large lift, and is used for meeting the requirements of heavy sediment environment and water diversion of a motor; the output end of the external sea water pump 4 is communicated with a sea water inlet III 16 on the diesel engine, and a belt pulley 5 for driving the external sea water pump through a belt is arranged at the free end of the diesel engine; the external seawater pump 4 drives a seawater pump through a diesel engine to pump outboard seawater into the cooling system; the seawater entering the diesel engine passes through the water diversion device 6 to divide the seawater into two parts: one path of the water is distributed to a generator seawater pipeline 7 through a water distribution device to cool the generator 2; the other path of the fresh water enters a seawater pipeline of the diesel engine, flows out of the diesel engine after cooling the intercooler and enters a shell-and-tube heat exchanger 3, meanwhile, high-temperature fresh water of the diesel engine flows out of the diesel engine to the shell-and-tube heat exchanger 3 through a fresh water outlet I13, and returns to the diesel engine 1 after cooling of the high-temperature fresh water is completed in the shell-and-tube heat exchanger 3, so that high-temperature components in the diesel engine 1 are cooled; the seawater flows out from the shell-and-tube heat exchanger and then joins with the seawater flowing out from the generator, and is discharged to the outboard 9 together.
The shell-and-tube heat exchanger has two inlets: the diesel engine comprises a seawater inlet I and a fresh water inlet I, wherein the seawater inlet I and the fresh water inlet I are communicated with a seawater outlet I and a fresh water outlet I on the diesel engine.
The specific cooling system principle is as follows: with reference to fig. 4, the external seawater pump 4 is driven by a seawater pump device (fig. 5) driven by a diesel engine to pump the outboard seawater into the cooling system; the seawater is filtered by a coarse filter to remove gravel, water plants and other large impurities, enters a seawater pipeline (figure 2) of a generator set and a water distribution device (figure 3) to divide the seawater into two parts, and one part of the seawater is distributed to the seawater pipeline of the generator set through the water distribution device (figure 3) to cool a generator winding; one path enters a diesel engine seawater pipeline, flows out of the diesel engine after cooling the intercooler and enters a shell-and-tube heat exchanger (figure 6), meanwhile, high-temperature fresh water of the diesel engine also flows out of the diesel engine to the shell-and-tube heat exchanger (figure 6), and returns to the diesel engine after cooling of the high-temperature fresh water is completed inside the shell-and-tube heat exchanger (figure 6), so that high-temperature components such as a diesel engine cylinder sleeve and the like are cooled. The seawater flows out from the shell-and-tube heat exchanger (figure 6), then joins with the seawater flowing out from the generator, and is discharged to the outboard. See the water-cooled generator set cooling system diagram for the sand sucking boat (attached figure 1) in detail.
The generator set seawater pipeline comprises a diesel engine seawater pipeline and a generator seawater pipeline. The inlet and the outlet of the pipeline are connected by flanges, and the pipelines are connected by a roll opening and a rubber leather sleeve; the cooling pipeline is sequentially a diesel engine seawater inlet, a generator water diversion port, an air cooler, a diesel engine seawater outlet, a shell-and-tube heat exchanger and finally converges with a generator seawater outlet to be discharged to the outside.
The diesel engine water diversion structure (figure 3) is a structure for adjusting water diversion flow and pressure from a diesel engine to a generator, and mainly comprises a water diversion device 17, a water diversion pore plate 18, a generator water diversion pipeline 7 and a sealing gasket 19; the water diversion device is of a flange structure and is connected with a diesel engine seawater main pipeline in a welding and inserting mode, the other end of the water diversion device is of a flange structure and is connected with a generator water diversion pipeline, and three rib plates are arranged on the water diversion device and can play a role in strengthening and fixing; the water diversion pore plate is a flange with a hole in the center, and the flow and the pressure of water diversion from the diesel engine to the generator can be adjusted by changing the size of the center hole; the water diversion pipeline of the generator is of a flange structure, one end of the water diversion pipeline is connected with the water diversion pore plate and the water diversion device, and the other end of the water diversion pipeline is connected with a seawater inlet of the generator; in addition, the water diversion device, the water diversion pore plate and the generator water diversion pipeline are sealed by gaskets, so that water leakage can be effectively prevented. The flow and pressure of water distributed from the diesel engine to the generator can be adjusted through the diesel engine water distribution structure (figure 3), so that the seawater parameter entering the generator is in the allowable range of the generator.
The large-flow external seawater pump (figure 4) is driven by a front output belt pulley of the diesel engine (figure 5), and the pitch circle diameter ratio of the belt pulley of the diesel engine and the belt pulley of the seawater pump is calculated by matching, so that the flow and the lift of the seawater pump are in the optimal state, and can change along with the change of the rotating speed of the diesel engine, and the performance matching and the adaptability of the seawater pump to different rotating speed working conditions of the diesel engine are greatly improved. In addition, compared with an electric sea water pump, the cost can be reduced while the installation work is reduced.
The diesel engine driven seawater pump device (figure 5) is specially designed for driving an external seawater pump. The sea water pump belt pulley is installed in the diesel engine free end, and should link to each other with diesel engine transition flange, output flange, bumper shock absorber, bent axle through the stay bolt, simple structure, the drive problem of external sea water pump (attached 4) can effectively be solved to the stable performance.
The shell-and-tube heat exchanger (figure 6) is made of alloy copper and can resist seawater corrosion. Compared with a plate type heat exchanger on a diesel engine body, the flow cross section of seawater is remarkably improved, and the blockage of silt can be effectively prevented.
The implementation of the cooling system can effectively avoid the blockage of a shell-and-tube heat exchanger and a seawater pump, and greatly improves the adaptability of the diesel engine in the environments with large silt, such as inland rivers, offshore rivers and the like.
Claims (2)
1. The utility model provides a inhale sand for ship water-cooling diesel generating set cooling system which characterized in that: the cooling system of the water-cooled diesel generator set is provided with an external sea water pump with large flow and large lift; the output end of the external sea water pump is communicated with a sea water inlet III on the diesel engine, and a belt pulley used for driving the external sea water pump through a belt is arranged at the free end of the diesel engine; the external seawater pump drives the seawater pump through a diesel engine to pump outboard seawater into the cooling system; the seawater entering the diesel engine passes through the water diversion structure to divide the seawater into two parts: one path is divided into water by the water dividing structure to a generator seawater pipeline for cooling the generator; the other path of the fresh water enters a seawater pipeline of the diesel engine, flows out of the diesel engine after cooling the intercooler and enters a shell-and-tube heat exchanger, meanwhile, high-temperature fresh water of the diesel engine also flows out of the diesel engine to the shell-and-tube heat exchanger, and returns to the diesel engine after cooling of the high-temperature fresh water is completed in the shell-and-tube heat exchanger, so that high-temperature components in the diesel engine are cooled; the seawater flows out from the shell-and-tube heat exchanger and then is converged with the seawater flowing out from the generator, and is discharged to the outboard.
2. The cooling system of the water-cooled diesel generator set for the sand sucking vessel as claimed in claim 1, wherein: the shell-and-tube heat exchanger has two inlets: the diesel engine comprises a seawater inlet I and a fresh water inlet I, wherein the seawater inlet I and the fresh water inlet I are communicated with a seawater outlet I and a fresh water outlet I on the diesel engine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121003220.1U CN215057707U (en) | 2021-05-12 | 2021-05-12 | Inhale sand for ship water-cooling diesel generating set cooling system |
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| CN202121003220.1U CN215057707U (en) | 2021-05-12 | 2021-05-12 | Inhale sand for ship water-cooling diesel generating set cooling system |
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| CN215057707U true CN215057707U (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090376A (en) * | 2021-05-12 | 2021-07-09 | 河南柴油机重工有限责任公司 | Inhale sand for ship water-cooling diesel generating set cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090376A (en) * | 2021-05-12 | 2021-07-09 | 河南柴油机重工有限责任公司 | Inhale sand for ship water-cooling diesel generating set cooling system |
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