CN106762795B - Seawater cooling and dredge pump water sealing system for dredger - Google Patents
Seawater cooling and dredge pump water sealing system for dredger Download PDFInfo
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- CN106762795B CN106762795B CN201611144083.7A CN201611144083A CN106762795B CN 106762795 B CN106762795 B CN 106762795B CN 201611144083 A CN201611144083 A CN 201611144083A CN 106762795 B CN106762795 B CN 106762795B
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- seawater
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- pump
- water sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a dredger seawater cooling and dredge pump water sealing system, which comprises: the seawater cooling device is used for cooling and precipitating the outboard seawater and then sending the outboard seawater into the main cooler; balanced sea chest, including sea chest body, a plurality of guide plates, logical sea mouth, cooling connecting pipe and water sealing connecting pipe, the mud pump seals the water installation, including at least one water sealing pump and at least one slush pump, water sealing pump and slush pump one-to-one are connected, and water sealing pump still is connected with water sealing connecting pipe. The invention utilizes the diversion and sedimentation function of the diversion plate of the seawater balance box and the automatic adjustment of the sea opening to the difference value of the water inlet quantity and the water outlet quantity, thereby realizing the function of water quantity balance, saving a seawater box and a sedimentation cabin which are specially used for supplying water, simplifying the system structure, reducing the space occupancy rate in the ship, and ensuring that the mud pump water sealing device can obtain filtered and precipitated clean seawater.
Description
Technical Field
The invention relates to the technical field of ship and ocean engineering, in particular to a seawater cooling and dredge pump water sealing system for a dredger.
Background
The main construction equipment of the cutter suction dredger is a dredge pump, the working medium of the dredger is slurry fluid containing a large amount of silt, and in order to convey the slurry to a remote specified area, the working pressure of the dredge pump is very high and often reaches more than 2 MPa. When the dredge pump works, a dredge pump water sealing system must be arranged, and the main functions of the dredge pump water sealing system are two, as follows:
1. and protecting the pump shaft sealing device of the dredge pump. Clean seawater with certain pressure is injected into the pump shaft seal of the mud pump, and the seawater pressure at the seal is ensured to be higher than the working pressure of the mud pump, so that only the clean seawater enters the mud pump from the seal, and no muddy water in the mud pump enters the seal. If mud containing a large amount of silt enters the pump shaft seal, the seal and the pump shaft are quickly abraded, so that the mud pump leaks and cannot work normally.
2. The service life of the pump shell of the dredge pump is prolonged. The casing of the dredge pump is easy to wear under the washing of silt for a long time. Because the dredge pump pressure is higher, after the dredge pump casing wearing and tearing to certain degree, can damage under the effect of the pressure difference between the inside and outside of the shell, cause the leakage accident. In order to avoid accidents caused by damage of the shell, the shell of the dredge pump must be replaced after being abraded to a certain degree, so that the use cost of the dredge pump is greatly increased. In order to avoid leakage accidents, the cost is saved simultaneously, namely, the service life of a shell of the dredge pump is prolonged as far as possible, the dredge pump usually uses a double-shell pump, namely, a layer of outer shell is covered outside the inner shell of the dredge pump, and balance water close to the pressure of the dredge pump is filled between the inner shell and the outer shell, so that the pressure difference inside and outside the inner shell is close to zero, the inner shell can be used very thinly, the cost is saved, and the safety is ensured by the protection of the outer shell. The balance water between the inner shell and the outer shell is also provided by a mud pump water sealing system.
Therefore, the mud pump water sealing system is an important component related to whether the dredger can work normally, the water quality of the water sealing system needs to be clean, and if a large amount of silt is contained, the sealing of a pump shaft can be damaged too quickly.
The main function of the dredger is dredging, and the dredger can stir to generate a large amount of silt when dredging, so that the silt content in the surrounding water body is extremely high. The seawater cooling and dredge pump water sealing system of the dredger can only take water from a water body outside the dredger body, and if the obtained outboard seawater with high silt content is directly used as cooling seawater and dredge pump water sealing, adverse effects can be brought to cooling equipment and dredge pump equipment on the dredger.
In order to ensure the cleanliness of cooling seawater and sealing water of a dredge pump, a filter and a sedimentation tank are arranged on a seawater inlet main pipe of the dredge boat, the sediment content in water is reduced through filtration and sedimentation, and then clean water is used for a seawater cooling and dredging pump sealing water system.
At present, most dredger will be provided with two sets of seawater tanks and settling tanks, as shown in fig. 1, which is the most commonly used conventional seawater cooling and water sealing system for cutter suction dredger, outboard seawater passes through a cooling seawater tank 1 ', then enters a cooling seawater settling tank 2' through a valve and a seawater filter, then enters a main seawater pump 3 'through the valve to drive the seawater into a main cooler 4' to take away heat, and then the seawater is discharged out of the dredger through a cooling seawater discharge pipe. In order to provide the mud pump 5 ' with mud pump sealing water, a set of water sealing pump sea water tank 6 ' and a water sealing pump precipitation cabin 7 ' and related pipelines, valves and the like are additionally arranged on the ship, thereby occupying precious space on the ship and increasing the complexity of the system.
As shown in figure 2, a part of ships are provided with only one set of seawater tank 1 'for cooling and a precipitation tank 2' for cooling, and simultaneously supply water for a cooling water and mud pump water sealing system. However, this increases the flow rate of the single system, so that the size of the cooling seawater tank 1 ', the cooling precipitation tank 2', the cooling seawater main pipe, the corresponding valves, filters and other accessories must be increased, the occupied space is increased, and the shipbuilding cost is increased.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, thereby providing the seawater cooling and dredge pump water sealing system of the dredger, which has small occupied space and low cost.
The technical problem of the invention is mainly solved by the following technical scheme:
the invention provides a dredger seawater cooling and dredge pump water sealing system, which comprises:
the seawater cooling device is used for cooling and precipitating the outboard seawater and then sending the outboard seawater into the main cooler;
the balance sea water tank comprises a sea water tank body, a plurality of guide plates, a sea opening, a cooling connecting pipe and a water sealing connecting pipe, wherein the guide plates are arranged on the inner side wall of the sea water tank body in a staggered mode;
the mud pump water sealing device comprises at least one water sealing pump and at least one mud pump, wherein the water sealing pumps are connected with the mud pumps in a one-to-one correspondence mode, and the water sealing pumps are further connected with the water sealing connecting pipes.
Furthermore, the seawater cooling device further comprises at least one cooling seawater tank and a cooling seawater sedimentation tank, wherein the cooling seawater tank is connected with the cooling seawater sedimentation tank through a first filter, and the cooling seawater sedimentation tank is connected with the main cooler through a seawater pump.
Furthermore, a second filter is arranged between the water sealing connecting pipe and the water sealing pump.
Further, all be equipped with mounting flange on cooling connecting pipe and the water seal connecting pipe, just cooling connecting pipe and water seal connecting pipe with all be equipped with the reinforcing plate between the sea water tank body.
Furthermore, the seawater tank body is further provided with a seawater tank vent pipe and a guide plate vent pipe, the seawater tank vent pipe is arranged at the top of the seawater tank body, one end of the guide plate vent pipe is connected with the seawater tank vent pipe, and the other end of the guide plate vent pipe extends to the guide plate at the bottommost layer.
Further, the guide plates are obliquely arranged, and two adjacent guide plates are parallel to each other.
The invention has the beneficial effects that: the seawater balancing tank is arranged between the seawater cooling device and the dredge pump water sealing device, seawater at an outlet of a main cooler of the seawater cooling device is directly introduced into the seawater balancing tank, the water guiding and precipitating effect of a guide plate of the seawater balancing tank and the automatic adjustment of a sea opening to a water inlet and outlet quantity difference value are utilized, so that the function of balancing water quantity is realized, the seawater balancing tank and a precipitation cabin special for supplying water are saved, the system structure is simplified, the space occupancy rate inside a ship is reduced, and the dredge pump water sealing device is ensured to obtain filtered and precipitated clean seawater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a prior art dredge boat seawater cooling and dredge pump water seal system;
FIG. 2 is a schematic structural view of another prior art dredge boat seawater cooling and dredge pump water seal system;
FIG. 3 is a schematic structural view of the dredger seawater cooling and dredge pump water sealing system of the present invention;
FIG. 4 is a schematic structural view of a balance sea chest of the dredger seawater cooling and dredge pump water sealing system of the present invention;
FIG. 5 isbase:Sub>A cross-sectional view taken along A-A of FIG. 4;
fig. 6 is a cross-sectional view taken along line B-B of fig. 5.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Referring to fig. 3-6, the dredger seawater cooling and dredge pump water sealing system of the present invention comprises:
the seawater cooling device 1 is used for cooling and precipitating the outboard seawater and then sending the outboard seawater into the main cooler 11;
the balance sea water tank 2 comprises a sea water tank body 21, a plurality of guide plates 22, a sea opening 23, a cooling connecting pipe 24 and a water sealing connecting pipe 25, wherein the guide plates 22 are arranged on the inner side wall of the sea water tank body 21 in a staggered mode, the cooling connecting pipe 24 and the water sealing connecting pipe 25 are respectively communicated with the lower portion and the upper portion of the sea water tank body 21, the sea opening 23 is arranged at the bottom of the sea water tank body 21 and is communicated with outboard sea water, and the cooling connecting pipe 24 is further connected with an outlet of the main cooler 11; in this embodiment, the baffles 22 are disposed in an inclined manner, and two adjacent baffles 22 are parallel to each other. Therefore, the seawater can be prevented from directly entering the pipeline of the water sealing connecting pipe 25, the seawater is slowly inclined upwards along the direction of the guide plate 22, and in the process of moving upwards, heavier silt particles sink, so that the sedimentation function is realized.
The mud pump water sealing device 3 comprises at least one water sealing pump 31 and at least one mud pump 32, wherein the water sealing pumps 31 are correspondingly connected with the mud pumps 32 one by one, and the water sealing pumps 31 are further connected with a water sealing connecting pipe 25. The water sealing pump 31 is mainly used for pumping clean seawater in the settled balance seawater tank 2 into each mud pump 32, and the mud pumps 32 use sealing water on pump shaft sealing water and double-shell balance water, so that the requirement on temperature is not high, but the requirement on cleanliness is high, and after the temperature of cooling seawater flowing out of the balance seawater tank 2 is raised, the temperature is between 36 and 45 ℃, so that the use requirement of the mud pump water sealing device 3 can be completely met.
The invention sets the balance seawater tank 2 between the seawater cooling device 1 and the dredge pump water sealing device 3, directly introduces the seawater at the outlet of the main cooler 11 of the seawater cooling device 1 into the balance seawater tank 2, utilizes the diversion and precipitation action of the diversion plate 22 of the seawater balance tank 2 and the automatic adjustment of the difference value of the water inlet quantity and the water outlet quantity by the sea opening 23, thereby realizing the function of balancing the water quantity, saving the seawater tank and the precipitation cabin which are specially used for supplying water, simplifying the system structure, reducing the space occupancy rate in the ship, and ensuring that the dredge pump water sealing device 3 can obtain the filtered and precipitated clean seawater.
Specifically, the seawater cooling device 1 further comprises at least one cooling seawater tank 12 and a cooling seawater settling tank 13, wherein the cooling seawater tank 12 is connected with the cooling seawater settling tank 13 through a first filter 15, and the cooling seawater settling tank 13 is connected with the main cooler 11 through a seawater pump 14. The outboard seawater passes through the cooling seawater tank 12, enters the cooling seawater precipitation tank 13 through a valve and a first filter 15 for precipitation, and then is pumped into the main cooler 11 by the seawater pump 14 for heat exchange.
In the present invention, a second filter 33 is further provided between the water seal connection pipe 25 and the water seal pump 31 in order to further improve the cleanliness of the seawater.
Preferably, in order to facilitate the quick connection between the cooling connecting pipe 24 and the water sealing connecting pipe 25 and the seawater cooling device 1 and the mud pump water sealing device 3, respectively, a mounting flange 26 is disposed on each of the cooling connecting pipe 24 and the water sealing connecting pipe 25, and a reinforcing plate 27 is disposed between each of the cooling connecting pipe 24 and the water sealing connecting pipe 25 and the seawater tank body 21. The reinforcing plate 27 can increase the structural strength of the cooling connection pipe 24 and the water sealing connection pipe 25, and improve the service life thereof.
In the invention, in order to enable the balance seawater tank to have a ventilation function and reduce the influence of bubbles and the like on the system, the seawater tank body 21 is also provided with a seawater tank ventilation pipe 28 and a flow guide plate ventilation pipe 29, the seawater tank ventilation pipe 28 is arranged at the top of the seawater tank body 21, one end of the flow guide plate ventilation pipe 29 is connected with the seawater tank ventilation pipe 28, and the other end of the flow guide plate ventilation pipe extends to the lowest flow guide plate 22.
The working process of the invention is as follows:
under the usual condition, the cooling seawater at the outlet of the main cooler 11 enters the seawater tank body 21 through the cooling connecting pipe 24, and the seawater with the flow required by the dredge pump water sealing device 3 is disturbed through the diversion of the diversion plate 22 with a certain inclination, a small amount of silt is precipitated, and then the seawater enters the water sealing connecting pipe 25 to be used by a water sealing system. Other surplus cooling seawater enters the sea-opening 23 downwards and is discharged out of the ship, so that the balance of water quantity is realized.
When seawater cooling device 1 was out of work, if the dredge pump seals water installation 3 and needs to supply water, then the sea water gets into sea water tank body 21 through leading to extra large mouth 23 in, then through the slope passageway that a plurality of guide plates 22 formed, makes the sea water velocity of flow reduce to make partial silt deposit descend, cleaner sea water gets into after bypassing the superiors guide plate 22 and seals water connecting pipe 25, supplies to seal the water system and uses.
When the dredge pump water sealing device 3 does not work, if the seawater cooling device 1 works and needs to discharge water, cooling seawater enters the seawater tank body 21 through the cooling connecting pipe 24 and then is discharged out of the ship through the seawater inlet 23.
From above, it is clear that balanced sea water tank 2 possesses the balanced function of sediment, drainage, intaking simultaneously and adjust business turn over water volume, and it occupies the combination that the space is less than one set of sea water tank of conventionality far away and adds the precipitation cabin, can realize the function that the cooling sea water was discharged and water supply of water system is sealed completely.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. A dredger seawater cooling and dredge pump water sealing system, comprising:
the seawater cooling device is used for cooling and precipitating the outboard seawater and then sending the outboard seawater into the main cooler;
the balance sea water tank comprises a sea water tank body, a plurality of guide plates, a sea opening, a cooling connecting pipe and a water sealing connecting pipe, wherein the guide plates are arranged on the inner side wall of the sea water tank body in a staggered mode;
the mud pump water sealing device comprises at least one water sealing pump and at least one mud pump, wherein the water sealing pumps are connected with the mud pumps in a one-to-one correspondence manner, and the water sealing pumps are also connected with the water sealing connecting pipes.
2. A dredger seawater cooling and dredge pump water shut-off system as claimed in claim 1, wherein the seawater cooling apparatus further comprises at least one cooling seawater tank connected to the cooling seawater settling tank via a first filter, and a cooling seawater settling tank connected to the main cooler via a seawater pump.
3. A dredger seawater cooling and dredge pump water shut-off system as claimed in claim 1 or 2, wherein a second filter is further provided between the water shut-off connection pipe and the water shut-off pump.
4. A dredger seawater cooling and dredge pump water shut-off system as claimed in claim 2, wherein mounting flanges are provided on the cooling connecting pipe and the water shut-off connecting pipe, and reinforcing plates are provided between the cooling connecting pipe and the water shut-off connecting pipe and the seawater box body.
5. The dredger seawater cooling and dredge pump water sealing system of claim 4, wherein the seawater tank body is further provided with a seawater tank permeability cell and a flow deflector permeability cell, the seawater tank permeability cell is arranged on the top of the seawater tank body, one end of the flow deflector permeability cell is connected with the seawater tank permeability cell, and the other end thereof extends to the lowest flow deflector.
6. A dredger seawater cooling and dredge pump water shut-off system as claimed in claim 5, wherein the deflectors are arranged obliquely and adjacent ones of the deflectors are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144083.7A CN106762795B (en) | 2016-12-13 | 2016-12-13 | Seawater cooling and dredge pump water sealing system for dredger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611144083.7A CN106762795B (en) | 2016-12-13 | 2016-12-13 | Seawater cooling and dredge pump water sealing system for dredger |
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| Publication Number | Publication Date |
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| CN106762795A CN106762795A (en) | 2017-05-31 |
| CN106762795B true CN106762795B (en) | 2022-11-11 |
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| CN201611144083.7A Active CN106762795B (en) | 2016-12-13 | 2016-12-13 | Seawater cooling and dredge pump water sealing system for dredger |
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| CN109969372A (en) * | 2019-04-11 | 2019-07-05 | 苏州飞驰环保科技股份有限公司 | Inner-outer circulation switching is with the water-cooling system of the water surface cleaning ship suitable for different waters |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013024119A (en) * | 2011-07-20 | 2013-02-04 | Chugoku Electric Power Co Inc:The | Shaft lubricating water supply line and foreign substance removing method |
| CN202520623U (en) * | 2012-03-07 | 2012-11-07 | 中交天津航道局有限公司 | Water sealing system for excavating pump |
| CN203081844U (en) * | 2012-12-31 | 2013-07-24 | 石家庄联合盛鑫泵业股份有限公司 | Water sealing system of excavating pump |
| CN203593138U (en) * | 2013-09-27 | 2014-05-14 | 上海航盛船舶设计有限公司 | Seawater deposition cabin structure |
| CN206280293U (en) * | 2016-12-13 | 2017-06-27 | 上海交通大学 | A kind of new seawater cooling of dredger and dredge pump water shutoff system |
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