CN210618437U - Water inlet device of self-flowing cooling water system - Google Patents
Water inlet device of self-flowing cooling water system Download PDFInfo
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- CN210618437U CN210618437U CN201920992324.6U CN201920992324U CN210618437U CN 210618437 U CN210618437 U CN 210618437U CN 201920992324 U CN201920992324 U CN 201920992324U CN 210618437 U CN210618437 U CN 210618437U
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Abstract
The utility model relates to a boats and ships cooling system technical field provides a gravity flow cooling water system water installations, including kuppe and water inlet channel, the protruding structure of kuppe for locating the boats and ships drain pan, in the kuppe was located to the water inlet channel, the water inlet of water inlet channel was seted up in the upstream face of kuppe. The embodiment of the utility model provides a gravity flow cooling water system water installations sets up protruding structure formation kuppe at the boats and ships drain pan to the incident surface at the kuppe sets up the water inlet, thereby dynamic pressure when can make full use of boats and ships navigation makes the sea water flow into water inlet channel from the water inlet, gets into the circulation sea water cooler that flows through boats and ships central cooling water system then, effectively reduces the energy consumption of sea water pump sending sea water.
Description
Technical Field
The utility model relates to a boats and ships cooling system technical field especially relates to a gravity flow cooling water system water installations.
Background
The cooling water system is an important component of a ship power system and is an important link which must be concerned for further improving the performance of the ship. In order to reduce the problems of scaling and corrosion, the prior advanced ships all adopt a central cooling water system, the working principle of the system is that a seawater pump is used for conveying seawater into the central cooling system to cool low-temperature fresh water, and the cooled low-temperature fresh water is used for cooling a cylinder sleeve of a main diesel engine of the ship, high-temperature fresh water of a cylinder cover and cylinder sleeves of various coolers and power generation diesel engines.
The existing central cooling water system of the ship needs to adopt a seawater pump to maintain the circulating flow of cooling seawater, and the continuous operation of the seawater pump generates a large amount of energy consumption.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a gravity flow cooling water system water installations for solve or partial current boats and ships central authorities cooling water system of solving, need adopt the sea water pump to maintain the circulation flow of cooling seawater, the continuous operation of sea water pump will produce the problem of a large amount of energy consumptions.
An embodiment of the utility model provides a gravity flow cooling water system water installations, including kuppe and water inlet channel, the protruding structure of kuppe for locating the boats and ships drain pan, water inlet channel locates in the kuppe, water inlet channel's water inlet is seted up in the incident surface of kuppe.
The boundary layer thickness of the ship bottom shell at the position of the air guide sleeve is delta, and the height of the water inlet from the ship bottom shell is larger than or equal to 0.4 delta.
The length of the flow guide cover along the length direction of the ship is greater than that of the flow guide cover along the width direction of the ship.
The cross section of the air guide sleeve is in a water drop shape with a wide front part and a narrow back part.
The length-width ratio of the cross section of the air guide sleeve is 7-8.
Wherein, the kuppe is fin-shaped.
Wherein, the incident flow surface of kuppe is the arc.
The flow guide cover is characterized in that the flow-facing surface of the flow guide cover is in a forward-swept type, and the back flow surface of the flow guide cover is in an arc shape.
Wherein, the curved back flow surface of kuppe is equipped with the ripple structure.
Wherein, the sweepforward incident flow surface of the air guide sleeve is provided with a plurality of protruding structures.
The embodiment of the utility model provides a gravity flow cooling water system water installations sets up protruding structure formation kuppe at the boats and ships drain pan to the incident surface at the kuppe sets up the water inlet, thereby can utilize the dynamic pressure when boats and ships are sailed, makes the sea water flow into water inlet channel from the water inlet, then gets into and flows through boats and ships central cooling water system's circulation sea water cooler. Set up the water inlet in the upstream face of bellied kuppe, can make full use of boats and ships navigation dynamic pressure, make the water inlet runner have less trompil area under the inflow flow of guaranteeing the water inlet and the pressure prerequisite of intaking, reduce the trompil area of the withstand voltage shell of boats and ships outside promptly to reduce the structure and the intensity influence of water inlet to the withstand voltage shell of boats and ships outside. In addition, the heat load of the ship is generally in direct proportion to the speed of the ship, and the higher the speed of the ship is, the higher the dynamic pressure of the navigation at the water inlet of the head-on surface is, so that the larger the flow of the seawater entering the circulating seawater cooler through the water inlet channel is, and the heat exchange amount is effectively improved. Therefore, the embodiment of the utility model provides a gravity flow cooling water system water installations, the dynamic pressure when make full use of boats and ships are sailed makes the sea water get into by oneself and flows the circulating seawater cooler of boats and ships central cooling water system to can effectively reduce the energy consumption of sea water pump pumping sea water.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a water inlet device of a self-flowing cooling water system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another water inlet device of a gravity flow cooling water system according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a water inlet device of a gravity flow cooling water system according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a water inlet device of a self-flowing cooling water system according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a water inlet device a-a of the gravity flow cooling water system shown in fig. 4 according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a water inlet device of a gravity flow cooling water system provided with a corrugated structure on an arc-shaped back flow surface of a dome according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a water inlet device of a gravity flow cooling water system, according to an embodiment of the present invention, in which a plurality of ridge structures are disposed on a forward-swept flow surface of a dome;
in the figure: 1. a pod; 2. a water inlet flow channel; 3. a water inlet; 4. a corrugated structure; 5. a ridge structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-7, the embodiment of the utility model provides a gravity flow cooling water system water installations, including kuppe 1 and water inlet channel 2, kuppe 1 is for locating the protruding structure of boats and ships drain pan, and in water inlet channel 2 located kuppe 1, water inlet channel 2's water inlet 3 seted up in kuppe 1's the upstream face.
The embodiment of the utility model provides a gravity flow cooling water system water installations sets up protruding structure formation kuppe 1 at the boats and ships drain pan to set up water inlet 3 at the incident flow face of kuppe 1, thereby can utilize the dynamic pressure when boats and ships are sailed, make the sea water flow into intake runner 2 from water inlet 3, then get into and flow through boats and ships central cooling water system's circulation sea water cooler. Set up water inlet 3 in bellied kuppe 1's the incident flow face, can make full use of boats and ships navigation dynamic pressure, make intake runner 2 have less trompil area under the inflow flow of guaranteeing water inlet 3 and the pressure prerequisite of intaking, reduce the trompil area of the withstand voltage shell of boats and ships outside promptly to reduce water inlet 3 and to the structure and the intensity influence of the withstand voltage shell of boats and ships outside. In addition, the heat load of the ship is generally in direct proportion to the speed of the ship, and the higher the speed of the ship is, the higher the dynamic pressure of the ship at the water inlet 3 of the incident surface is, so that the larger the flow of the seawater entering the circulating seawater cooler through the water inlet channel 2 is, and the heat exchange amount is effectively increased. Therefore, the embodiment of the utility model provides a gravity flow cooling water system water installations, the dynamic pressure when make full use of boats and ships are sailed makes the sea water get into by oneself and flows the circulating seawater cooler of boats and ships central cooling water system to can effectively reduce the energy consumption of sea water pump pumping sea water.
According to the theory of hydromechanics, when a ship sails, seawater can existThe production of boats and ships drain pan surface has the boundary layer of certain velocity gradient, right the embodiment of the utility model provides a gravity flow cooling water system water installations, the boundary layer thickness of hypothesis boats and ships drain pan in kuppe 1 department is the delta. In order to make the water inlet 3 arranged on the flow-facing surface of the air guide sleeve 1 avoid the low-speed area of the boundary layer, as shown in fig. 2, the height h of the water inlet 3 from the bottom shell of the ship1It may be set to 0.4 δ or more.
In order to reduce the additional resistance that protruding structure brought for boats and ships move ahead, the embodiment of the utility model provides a gravity flow cooling water system water installations can be with kuppe 1 along boats and ships length direction's length l1Is set to be greater than the length l of the air guide sleeve 1 along the width direction of the ship2The air guide sleeve 1 has a flat streamline shape. For example, as shown in fig. 4 and 5, the cross-sectional shape of the pod 1 in the forward direction of the ship may be a drop shape having a wide front and a narrow back. Further, by ship design experience and test measurement, the length-width ratio of the cross section of the air guide sleeve 1 can be set to be 7-8, and the total resistance is small at the moment. At the moment, the water inlet 3 arranged on the incident flow surface of the air guide sleeve 1 is matched with the incident flow surface in shape, the water inlet can be arranged in a rectangular shape with four round chamfers, and the length of the rectangular water inlet 3 along the height direction of the incident flow surface is greater than that along the width direction of the incident flow surface; the water inlet channel 2 in the air guide sleeve 1 is constrained by the shape and structure of the air guide sleeve 1, and in order to fully utilize the space in the air guide sleeve 1, the cross section of the water inlet channel 2 can also be matched with the channel to be arranged into a water drop shape with a wide front part and a narrow back part; to reduce the flow losses of the seawater in the intake runner 2, the intake runner transitions gradually and smoothly from a rounded rectangle at the intake 3 to a drop shape.
Based on the bionics design principle, the shape of the fin of large marine organisms such as dolphin and shark, which can effectively reduce the seawater resistance, can be used as a fin-shaped structure for the air guide sleeve 1 with a flat streamline shape. For example, as shown in fig. 2, the flow guide cover 1 may have an arc-shaped flow guide surface in the vertical cross section of the flow guide cover 1 in the forward direction of the ship, or as shown in fig. 3, the flow guide cover 1 may have a forward-swept flow guide surface and an arc-shaped flow guide surface. The forward sweep layout of the air guide sleeve 1 can increase the inlet of the water inlet flow passage 2The effective inlet area of the water gap 3 increases the inflow. Further, as shown in fig. 6, the corrugated structure 4 may be disposed on the curved back flow surface of the pod 1 by taking the shape of the carrier pigeon and the eagle wing as a reference. Tests show that the arc-shaped back flow surface of the air guide sleeve 1 adopts the wavy trailing edge to reduce resistance and noise. The cross section length of the air guide sleeve 1 at the corrugation is chord length C, and the corresponding corrugation size setting can be: height h of corrugation20.04-0.06C, and the width w of the corrugation is 0.15-0.25C. Additionally, because the embodiment of the utility model provides a gravity flow cooling water system water installations, its size is at the magnitude of a meter, and is close with the great seat head whale pectoral fin reynolds number of body type in the ocean, can reference the uplift structure 5 of seat head whale pectoral fin leading edge. In some dolphins, the annular ridge that grows along the anterior edge of the dorsal and thoracic spines is called a "nub". The two sides of the raised 'node' of the front edge of the whale head can generate paired reverse vortex flows, the 'node' is like a vortex generator, the rotating vortex flows enable water flow to be adsorbed on the upper layer surface of the fin instead of being branched to the upper side and the lower side, and the pectoral fin with the raised structure 5 can have less resistance of about ten percent. Therefore, the embodiment of the present invention provides a water inlet device for a gravity flow type cooling water system, which can also adopt a design scheme of a "node" type leading edge, as shown in fig. 7, a plurality of ridge structures 5 can be arranged on the forward-swept incident flow surface of the air guide sleeve 1. The length of the cross section at the bottom of the air guide sleeve 1 along the length direction of the ship is a chord length C0And the height of the pod 1 is H, the size of the ridge structure 5 may be: height h of bump3Is 0.04C0～0.06C0The interval d between adjacent ridges is 0.18H to 0.22H.
As shown in fig. 7, in the embodiment of the water inlet device for a gravity flow cooling water system provided by the present invention, the relevant structures and parameters thereof are as follows: the thickness delta of a boundary layer of the ship bottom shell at the position of the air guide sleeve 1 is 1m, the height H of the air guide sleeve 1 is 0.8m, the length C of the cross section of the bottom of the air guide sleeve 1 along the length direction of the ship is 1.1m, and the width of the cross section of the air guide sleeve 1 is 0.15 m; the water inlet 3 of the water inlet flow passage 2 is a rectangle with rounded corners, the height from the water inlet 3 to the bottom shell of the ship is 0.4m, the size of the rectangle is 0.1 multiplied by 0.3m, and the water inlet flow passage 2 gradually and smoothly transits from the rectangle with the rounded corners at the water inlet 3 to a drop shape; the whole air guide sleeve 1 is of a forward-swept fin-shaped structure, a corrugated structure 4 is arranged on an arc-shaped back flow surface of the air guide sleeve, the height of the corrugation is 0.05C, the width of the corrugation is 0.2C, 5 bump structures 5 are arranged on the forward-swept incident flow surface of the air guide sleeve, the height of each bump is 0.05C, and the distance between every two adjacent bumps is 0.02H. Through experimental verification, the embodiment of the utility model provides a gravity flow cooling water system water installations, the dynamic pressure when not only can make full use of boats and ships navigation effectively reduces the energy consumption of sea water pump pumping sea water, and the displacement is little moreover, light in weight, the additional resistance is low and the stream noise is low.
As can be seen from the above embodiments, the water inlet device of the self-flowing cooling water system provided by the present invention has the structure that the protruding structure is arranged on the bottom shell of the ship to form the air guide sleeve 1, and the water inlet 3 is arranged on the incident flow surface of the air guide sleeve 1, so that the dynamic pressure of the ship during navigation can be utilized to make the seawater flow from the water inlet 3 into the water inlet channel 2, and then enter and flow through the circulating seawater cooler of the central cooling water system of the ship; set up water inlet 3 in bellied kuppe 1's the incident flow face, can make full use of boats and ships navigation dynamic pressure, make intake runner 2 have less trompil area under the inflow flow of guaranteeing water inlet 3 and the pressure prerequisite of intaking, reduce the trompil area of the withstand voltage shell of boats and ships outside promptly to reduce water inlet 3 and to the structure and the intensity influence of the withstand voltage shell of boats and ships outside. In addition, the heat load of the ship is generally in direct proportion to the speed of the ship, and the higher the speed of the ship is, the higher the dynamic pressure of the ship at the water inlet 3 of the incident surface is, so that the larger the flow of the seawater entering the circulating seawater cooler through the water inlet channel 2 is, and the heat exchange amount is effectively increased. Therefore, the embodiment of the utility model provides a gravity flow cooling water system water installations, the dynamic pressure when make full use of boats and ships are sailed makes the sea water get into by oneself and flows the circulating seawater cooler of boats and ships central cooling water system to can effectively reduce the energy consumption of sea water pump pumping sea water. Further, in order to enable the water inlet 3 arranged on the upstream side of the air guide sleeve 1 to avoid the low-speed area of the boundary layer, the height of the water inlet 3 from the bottom shell of the ship can be set to be greater than or equal to 0.4 times the thickness of the boundary layer. The shape of the air guide sleeve 1 is optimized based on the bionic design principle, the air guide sleeve 1 can be set to be a forward-swept fin-shaped structure, the arc-shaped back flow surface of the air guide sleeve is provided with a corrugated structure, the forward-swept incident flow surface of the air guide sleeve is provided with a plurality of ridge structures 5, and the air guide sleeve is small in water displacement, light in weight, low in additional resistance and low in flow noise.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a gravity flow cooling water system water installations, its characterized in that includes kuppe and water inlet runner, the kuppe is for locating the protruding structure of boats and ships drain pan, water inlet runner locates in the kuppe, water inlet runner's water inlet is seted up in the incident flow face of kuppe.
2. The gravity flow cooling water system water intake apparatus of claim 1, wherein the boundary layer thickness of the bottom hull of the vessel at the air guide sleeve is δ, and the height of the water inlet from the bottom hull of the vessel is greater than or equal to 0.4 δ.
3. The gravity flow cooling water system water intake apparatus of claim 1, wherein the length of the draft shield in the ship length direction is greater than the length of the draft shield in the ship width direction.
4. The gravity flow cooling water system water inlet apparatus of claim 3, wherein the cross section of the dome is in the form of a drop having a wide front and a narrow back.
5. The water inlet device of a self-flowing cooling water system according to claim 4, wherein the cross-sectional length-width ratio of the flow guide cover is 7-8.
6. The gravity flow cooling water system water intake apparatus of claim 4, wherein the pod is fin-shaped.
7. The water inlet device of a self-flowing cooling water system according to claim 6, wherein the flow-incident surface of the dome is curved.
8. The water inlet device of a self-flowing cooling water system according to claim 6, wherein the flow-facing surface of the air guide sleeve is forward-swept, and the flow-backing surface of the air guide sleeve is arc-shaped.
9. The water inlet device of a gravity flow cooling water system according to claim 8, wherein the curved back flow surface of the dome is provided with a corrugated structure.
10. The gravity flow cooling water system inlet assembly of claim 8, wherein the forward swept upstream face of the dome is provided with a plurality of ridges.
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| CN201920992324.6U CN210618437U (en) | 2019-06-28 | 2019-06-28 | Water inlet device of self-flowing cooling water system |
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| CN201920992324.6U CN210618437U (en) | 2019-06-28 | 2019-06-28 | Water inlet device of self-flowing cooling water system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435865A (en) * | 2019-06-28 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | Gravity flow cooling water system water feed apparatus |
| CN111942559A (en) * | 2020-07-22 | 2020-11-17 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and device for improving performance of self-flowing cooling system and control unit |
| CN112373668A (en) * | 2020-11-17 | 2021-02-19 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Cooperative control method and system for ship self-flow cooling system and power system |
| CN110435865B (en) * | 2019-06-28 | 2024-07-09 | 中国船舶重工集团公司第七一九研究所 | Self-flowing cooling water system water inlet device |
-
2019
- 2019-06-28 CN CN201920992324.6U patent/CN210618437U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435865A (en) * | 2019-06-28 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | Gravity flow cooling water system water feed apparatus |
| CN110435865B (en) * | 2019-06-28 | 2024-07-09 | 中国船舶重工集团公司第七一九研究所 | Self-flowing cooling water system water inlet device |
| CN111942559A (en) * | 2020-07-22 | 2020-11-17 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and device for improving performance of self-flowing cooling system and control unit |
| CN111942559B (en) * | 2020-07-22 | 2021-04-27 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and device for improving performance of self-flowing cooling system and control unit |
| CN112373668A (en) * | 2020-11-17 | 2021-02-19 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Cooperative control method and system for ship self-flow cooling system and power system |
| CN112373668B (en) * | 2020-11-17 | 2021-10-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Cooperative control method and system for ship self-flow cooling system and power system |
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