Ship cooler and control method thereof

Abstract

The invention relates to a ship cooler and a control method thereof, and relates to the field of box type coolers, the ship cooler mainly comprises a tube bundle box, a mounting frame is fixedly mounted on the tube bundle box, a tube plate is fixedly mounted on the mounting frame, a plurality of cooling tube bundles used for conveying cooling media are mounted on the tube plate, and the cooling tube bundles are arranged in a U shape; a plurality of cooling tube bundles are arranged on the tube plate, water passing channels allowing seawater to flow are formed among the cooling tube bundles, a valve cover is fixedly installed on the tube plate, and a first flange allowing a cooling medium to flow in and a second flange allowing the cooling medium to flow out are installed on the valve cover; a water inlet grating and a water outlet grating are arranged on a box body of the tube bundle box, the water inlet grating is arranged at the bottom of the tube bundle box, and the water inlet grating is located under the cooling tube bundle; the water outlet grating is arranged on the side wall of the tube bundle box and located on the side face of the cooling tube bundle. And a turbulent flow structure and a descaling device are mounted in the tube bundle box. According to the marine box-type cooler, the situation that the cooling tube bundle of the marine box-type cooler is blocked can be reduced.

Description

Technical Field

[0001] The present application relates to the field of box-type coolers, and in particular to a ship cooler and a control method thereof. Background Art

[0002] Box cooler, also known as outboard cooler, is composed of multiple copper tubes and is directly installed in the seawater tank, saving engine room space and operating costs. Box cooler is generally used for cooling systems such as main engine, generator and auxiliary equipment. Applicable ship types include small and medium-sized cargo ships, oil tankers, tugboats, barges, fishing boats, ferries, supply ships, refrigerated ships, icebreakers, etc.

[0003] In the prior art, common box-type coolers mainly include water tanks, rib gaskets, tube sheets, mounting gaskets, mounting flanges and tube bundles. The integrated U-shaped tube bundle is expanded onto the tube sheet, and then the tube sheet is fixed to the mounting flange on the top plate of the seawater tank by bolts. The cooling effect of the box-type cooler is achieved through forced circulation when the ship is sailing or natural convection when stationary: when the ship is in a sailing state, the cooling seawater enters the seawater tank through the water inlet grille, and then flows out through the water outlet grille along the outside of the U-shaped tube bundle, and the cooling effect is achieved through the forced circulation process of the cooling seawater generated by the ship's sailing. When the ship is in a non-navigation state such as a dock or anchorage, the cooling seawater in the seawater tank exchanges heat with the cooling fresh water system in the ship. The density of the outboard seawater decreases due to the increase in temperature, so it flows upward and is discharged from the seawater tank. At the same time, the seawater with a lower temperature at the bottom enters the seawater tank through the water inlet grille, thus forming an upward natural circulation process, and finally achieving a cooling effect.

[0004] However, there are many problems with existing ship box coolers. In terms of pipe blockage, the box cooler tube bundle is dense and has a large flow diameter, which slows down the water flow rate, especially near the tube wall, making it easy for suspended particles in the water to settle and form scale. However, its structure is fixed, unlike traditional plate coolers that can be disassembled and cleaned. Long-term operation or improper operation can easily lead to internal dirt accumulation, hindering the flow of heat medium, affecting cooling efficiency and reliability; the turbid water quality of the inland sea makes it easy for mud and dirt to deposit on the inner surface of the seabed door, interfering with the inflow and outflow of water in the box, causing the temperature to rise and the cooling effect to decrease, and the adhesion of sludge will also weaken the heat exchange efficiency. Summary of the invention

[0005] In order to achieve the technical effect of automatic descaling of a tube bundle box and reduce the occurrence of blockage between cooling tube bundles in the tube bundle box, the present application provides a ship cooler and a control method thereof.

[0006] The present application provides a ship cooler and a control method thereof using the following technical solutions: A ship cooler and a control method thereof, which mainly comprises a tube bundle box, a mounting frame is fixedly mounted on the tube bundle box, a tube sheet is fixedly mounted on the mounting frame, a plurality of cooling tube bundles for conveying cooling medium are mounted on the tube sheet, the cooling tube bundles are all arranged in a U shape, and a water passage for seawater circulation is formed between the plurality of cooling tube bundles, a valve cover is fixedly mounted on the tube sheet, a first flange for cooling medium inflow and a second flange for cooling medium outflow are mounted on the valve cover; The tube bundle box is provided with a water inlet grille and a water outlet grille. The water inlet grille is provided at the bottom of the tube bundle box and is located directly below the cooling tube bundle. The water outlet grille is provided on the side wall of the tube bundle box and is located on the side of the cooling tube bundle. A flow disturbance structure and a descaling device are installed in the tube bundle box.

[0007] By adopting the above technical solution, when the ship is traveling on the route, the cooling medium flows in through the first flange, is diverted through multiple cooling tube bundles, and finally flows out through the second flange. When the cooling medium flows through the cooling tube bundles, seawater flows into the tube bundle box from the water inlet grid, passes through the water passage between the cooling tube bundles, and takes out the heat in the cooling medium in the cooling tube bundles, thereby achieving the technical effect of cooling the cooling tube bundles. The turbulent structure can disturb the seawater entering the tube bundle box, so that the impurities carried in the seawater are uniformed, and the impurities are prevented from floating on the upper layer of the tube bundle box and adhering to the outer wall of the cooling tube bundle. At the same time, by setting the descaling device in the tube bundle box, the inside of the tube bundle box can be automatically descaled.

[0008] Preferably, the descaling device comprises: A flow rate monitoring unit, installed in the tube bundle box, for monitoring the flow rate of seawater in the tube bundle box; A turbidity monitoring unit, installed on the tube bundle box, for monitoring the turbidity of the seawater flowing through the tube bundle box; A data processor is connected to the signal input terminals of the flow rate monitoring unit and the turbidity monitoring unit, and is used to calculate the fouling coefficient in the tube bundle box according to the flow rate data and the water turbidity data, and output a descaling control signal when the fouling coefficient reaches a descaling threshold; The ultrasonic descaling module is fixedly installed in the tube bundle box and is connected to the signal output terminal of the data processor for receiving the descaling control signal and operating.

[0009] By adopting the above technical solution, when the ship is traveling on the route, the flow rate monitoring unit monitors the flow rate through the tube bundle box in real time and outputs the flow rate data, the turbidity monitoring unit monitors the turbidity of the seawater flowing through the tube bundle box in real time and outputs the turbidity data, and the data processor calculates the fouling coefficient Q in the tube bundle box after receiving the flow rate data and turbidity data. By comparing the fouling coefficient Q, a descaling control signal can be output when the fouling coefficient Q reaches the descaling threshold.

[0010] Preferably, two groups of L-shaped mounting seats are fixedly mounted on the outer side wall of the tube bundle box, the two groups of L-shaped mounting seats are respectively arranged on the upper and lower sides of the water outlet grille, turbines are rotatably mounted on the two groups of L-shaped mounting seats, and the turbines are both provided with induction bumps; The flow rate monitoring unit comprises: A plurality of ultrasonic distance measuring sensors are fixedly mounted on the outer side wall of the tube bundle box, respectively facing the mounting parts of the plurality of turbines, and are used to monitor the distance to the front shielding surface and output a sensing distance signal; A plurality of comparators are respectively connected to the signal output terminals of the plurality of ultrasonic distance measuring sensors, and are used to receive the sensing distance signal and output a high level signal when the sensing distance signal is less than a set distance; The single chip microcomputer is connected to the signal output terminals of the comparators and is used to receive the high level signal and calculate the flow rate of the seawater in the tube bundle box.

[0011] By adopting the above technical solution, when the tube bundle box is immersed in seawater, seawater enters the tube bundle box through the water inlet grille and flows out through the water outlet grille, the outflowing seawater drives the turbine to rotate. Since the rotation speed of the turbine is positively correlated with the flow velocity of the seawater, the ultrasonic ranging sensor and the comparator are used in combination with each other. When the turbine rotates until the sensing protrusion is opposite to the sensing end of the ultrasonic ranging sensor, the sensing distance measured by the ultrasonic ranging sensor is less than the set distance, and the comparator outputs a high-level signal. The single-chip microcomputer can calculate the flow velocity of the seawater based on the occurrence frequency of multiple high-level signals, thereby achieving the technical effect of automatically detecting the flow velocity of the seawater in the tube bundle box.

[0012] Preferably, the turbidity monitoring unit comprises a turbidity sensor, and the turbidity sensor is fixedly installed inside the box body of the tube bundle box.

[0013] By adopting the above technical solution, the turbidity of the seawater flowing through the tube bundle box can be monitored in real time through the turbidity sensor.

[0014] Preferably, the ultrasonic descaling module includes two ultrasonic descalers, which are installed on the top of the tube bundle box through connecting flanges, the vibration heads of the two ultrasonic descalers extend into the tube bundle box, and the vibration heads of the two ultrasonic descalers are located on both sides of the cooling tube bundle.

[0015] By adopting the above technical solution, when descaling is required, the data processing module controls the operation of two ultrasonic descaling devices. The ultrasonic descaling devices drive the vibration head to vibrate at a high frequency, which can drive the water body to flush the cooling tube bundle at a high frequency. The scale attached to the outer wall of the cooling tube bundle is separated from the tube wall after being vibrated and discharged through the water outlet grille together with the flowing water body.

[0016] Preferably, it also includes a first bracket and a second bracket, and the first bracket and the second bracket are provided with a plurality of sockets adapted to the tube body of the cooling tube bundle, and the plurality of sockets are evenly arranged in a linear array on the first bracket and the second bracket, and the first bracket and the second bracket are sleeved on the plurality of cooling tube bundles.

[0017] By adopting the above technical solution, since the tube bodies of the cooling tube bundle are inserted into the sockets on the first bracket and the second bracket, and the sockets are evenly arranged in a linear array on the first bracket and the second bracket, the position of the cooling tube bundle can be restricted by the first bracket and the second bracket, thereby ensuring that the water passages formed between the cooling tube bundles are uniform and reducing the deformation and displacement of the cooling pipes.

[0018] Preferably, the spoiler structure includes a plurality of spoilers, and the plurality of spoilers are fixedly installed in the box body of the tube bundle box.

[0019] By adopting the above technical solution, the seawater flowing into the tube bundle box is disturbed by the spoiler, so that the impurities in the seawater are evenly distributed in the seawater and flow out through the water passage between the cooling tube bundles, thereby reducing the situation where impurities float on the surface of the seawater and cause the impurities to adhere to the box body and the cooling tube bundle.

[0020] The present application also proposes a control method for a ship cooler according to the above ship cooler, which mainly includes the following steps: Step S1: collecting tube bundle box monitoring data of seawater flowing through the tube bundle box, wherein the tube bundle box monitoring data includes flow rate data and turbidity data of the seawater; Step S2: Calculate the fouling coefficient Q in the tube bundle box based on the flow rate data and the turbidity data by a data processor; Step S3: setting a descaling threshold value e, comparing the scaling coefficient Q, and controlling the ultrasonic descaling module to run to perform the descaling operation when the scaling coefficient Q reaches the descaling threshold value.

[0021] By adopting the above technical solution, by collecting the flow rate data and turbidity data of seawater flowing into the tube bundle box, the data processor calculates the fouling coefficient Q in the tube bundle box according to the collected flow rate data and turbidity data, and by comparing the fouling coefficient Q, when the fouling coefficient Q reaches the descaling threshold, the ultrasonic descaling module can be controlled to perform descaling operation on the tube bundle box, thereby achieving the technical effect of automatic descaling.

[0022] Preferably, step S1 comprises the following steps: Step S11: a flow rate monitoring unit is arranged in the tube bundle box, and flow rate data outputted by the flow rate monitoring unit is collected at a time interval of 6 minutes; Step S12: a turbidity monitoring unit is arranged in the tube bundle box, and turbidity data outputted by the turbidity monitoring unit is collected at a time interval of 6 minutes.

[0023] By adopting the above technical solution, turbidity data and flow rate data are collected at a time interval of 6 minutes, so that the data processor can calculate the fouling coefficient Q in the tube bundle box at a time interval of 6 minutes.

[0024] Preferably, step S2 comprises the following steps: Step S21: Obtain the flow rate data and turbidity data of the seawater in the tube bundle box, and use the formula Calculate Q; where a is the weight of the flow rate data, b is the weight of the turbidity data, Vn is the flow rate data of seawater, and Zn is the turbidity data of seawater.

[0025] By adopting the above technical solution, the fouling coefficient can be calculated based on the flow rate data and turbidity data through the formula, and the fouling amount in the tube bundle box can be fed back through the fouling coefficient. As time goes by, the fouling Q gradually increases. When the turbidity coefficient increases to reach the descaling threshold, the data processor controls the ultrasonic descaling module to run to perform the descaling operation.

[0026] In summary, the present invention provides a ship cooler and a control method thereof, which has at least one of the following beneficial technical effects: 1. When the ship is traveling on the route, the cooling medium flows in through the first flange, is divided through multiple cooling tube bundles, and finally flows out through the second flange. When the cooling medium flows through the cooling tube bundles, seawater flows into the tube bundle box from the water inlet grid, passes through the water passage between the cooling tube bundles, and takes out the heat in the cooling medium in the cooling tube bundles, thereby achieving the technical effect of cooling the cooling tube bundles. The turbulent structure can disturb the seawater entering the tube bundle box, so that the impurities carried in the seawater are uniformed, and the impurities are prevented from floating on the upper layer of the tube bundle box and adhering to the outer wall of the cooling tube bundle. At the same time, by setting the descaling device in the tube bundle box, the inside of the tube bundle box can be automatically descaled. 2. When the tube bundle box is immersed in seawater, seawater enters the tube bundle box through the water inlet grille and flows out through the water outlet grille. The outflowing seawater drives the turbine to rotate. Since the rotation speed of the turbine is positively correlated with the flow rate of seawater, the ultrasonic distance sensor and the comparator are used in combination. When the turbine rotates until the sensing protrusion is opposite to the sensing end of the ultrasonic distance sensor, the sensing distance measured by the ultrasonic distance sensor is less than the set distance, and the comparator outputs a high-level signal. The single-chip microcomputer can calculate the flow rate of seawater based on the occurrence frequency of multiple high-level signals, thereby achieving the technical effect of automatically detecting the flow rate of seawater in the tube bundle box; 3. The seawater flowing into the tube bundle box is disturbed by the spoiler, so that the impurities in the seawater are evenly distributed in the seawater and flow out through the water passage between the cooling tube bundles, reducing the impurities floating on the seawater surface and causing the impurities to adhere to the box body and cooling tube bundles; 4. By collecting the flow rate data and turbidity data of the seawater flowing into the tube bundle box, the data processor calculates the fouling coefficient Q in the tube bundle box according to the collected flow rate data and turbidity data. By comparing the fouling coefficient Q, when the fouling coefficient Q reaches the descaling threshold, the ultrasonic descaling module can be controlled to perform descaling operations on the tube bundle box, thereby achieving the technical effect of automatic descaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a cooler.

[0028] Figure 2 It is a schematic diagram for showing the water inlet grille and the water outlet grille on the tube bundle box according to the embodiment of the present application.

[0029] Figure 3 yes Figure 1 The enlarged schematic diagram at point A is mainly used to show the overall structure of the second bracket.

[0030] Figure 4 It is a schematic diagram used to illustrate the installation position of the ultrasonic ranging sensor in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a cooler.

[0032] Figure 6 It is an overall flow chart of the control method of the cooler used to demonstrate the embodiment of the present application.

[0033] Explanation of the reference numerals: 1. tube bundle box; 11. water inlet grille; 12. water outlet grille; 13. L-shaped mounting seat; 14. turbine; 141. induction bump; 15. spoiler; 16. bottom plate; 17. side plate; 2. mounting frame; 3. tube sheet; 4. cooling tube bundle; 41. first bracket; 42. second bracket; 421. socket; 5. valve cover; 51. first flange; 52. second flange; 6. descaling device; 61. flow rate monitoring unit; 611. ultrasonic ranging sensor; 62. turbidity monitoring unit; 63. ultrasonic descaling device. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0035] Embodiment 1: This embodiment of the present application discloses a ship cooler and a control method thereof. Figure 1-Figure 6 It mainly includes a tube bundle box 1, which is a sealed box body. A mounting frame 2 is installed on the top of the tube bundle box 1 by screws. A tube sheet 3 is fixedly installed on the mounting frame 2 by screws. A plurality of U-shaped cooling tube bundles 4 are installed on the tube sheet 3 by expansion. The cooling tube bundles 4 are evenly arranged on the tube sheet 3 in a linear array, and water passages for seawater circulation are formed between the cooling tube bundles 4.

[0036] A valve cover 5 is fixedly mounted on the tube sheet 3 by bolts. The valve cover 5 is provided with a first flange 51 and a second flange 52 for connecting with an external pipeline, wherein the first flange 51 is used for the inflow of cooling medium, and the second flange 52 is used for the outflow of cooling medium.

[0037] In order to ensure the tightness of the connection between the valve cover 5, the mounting frame 2 and the tube sheet 3, in this embodiment, gaskets are installed between the valve cover 5 and the tube sheet 3, and between the mounting frame 2 and the tube sheet 3.

[0038] Reference Figure 1 and Figure 2 In the embodiment of the present application, the tube bundle box 1 includes a bottom plate 16 and a side plate 17. The bottom plate 16 is provided with a water inlet grille 11, and the side plate 17 is provided with a water outlet grille 12; and the side plate 17 and the bottom plate 16 are formed by bending a complete piece of steel. The water inlet grille 11 is composed of a plurality of waist-shaped water inlet holes, and the water inlet grille 11 is located directly below the cooling tube bundle 4; the water outlet grille 12 is composed of a plurality of waist-shaped water outlet holes, and the water outlet grille 12 is located on the side of the cooling tube bundle 4. It should be noted that the water inlet holes are opened along the width direction of the ship, and the water outlet holes are opened along the length direction of the ship.

[0039] When the ship travels along the route, the cooling medium flows into the cooling tube bundles 4 through the first flange 51, and then flows out from the second flange 52 after being dispersed into multiple branches by the cooling tube bundles 4. When the cooling medium flows through the cooling tube bundles 4, seawater enters the tube bundle box 1 through the water inlet and flows out from the tube bundle box 1 through the water outlet. The flowing seawater absorbs the heat carried by the cooling medium and takes it out, thereby achieving the technical effect of cooling the cooling medium.

[0040] Reference Figure 2 and Figure 3 In the embodiment of the present application, a first bracket 41 and a second bracket 42 are sleeved on the cooling tube bundle 4, the first bracket 41 is located near the bottom of the cooling tube bundle 4, and the second bracket 42 is located near the top of the cooling tube bundle 4. In addition, a plurality of plug holes 421 adapted to the cooling tube bundle 4 are provided on the first bracket 41 and the second bracket 42, and the plug holes 421 are evenly arranged on the first bracket 41 and the second bracket 42.

[0041] The tube bodies of the cooling tube bundle 4 are inserted into the insertion holes 421 on the first bracket 41 and the second bracket 42. The insertion holes 421 are evenly arranged in a linear array on the first bracket 41 and the second bracket 42. The first bracket 41 and the second bracket 42 can limit the position of the cooling tube bundle 4 to ensure that the water passage formed between the cooling tube bundles 4 is uniform, thereby reducing the deformation and displacement of the cooling pipes.

[0042] It should be noted that, in this embodiment, in order to further reduce the impurities carried in the seawater adhering to the cooling tube bundle 4 and causing the cooling tube bundle 4 to be blocked, a nano super hydrophobic coating with a special microstructure is coated on the cooling tube bundle 4. In some other embodiments, according to the actual needs of use, a multi-layer filter pre-filter device can also be installed at the inlet of the water inlet pipe of the seawater tank, which is not limited or elaborated here.

[0043] Furthermore, in the embodiment of the present application, a flow disturbance structure and a descaling device 6 are installed in the tube bundle box 1 .

[0044] Among them, refer to Figure 1 , Figure 2 as well as Figure 5 The descaling device 6 includes a flow rate monitoring unit 61, a turbidity monitoring unit 62 and an ultrasonic descaling module installed in the tube bundle box 1. The flow rate monitoring unit 61 is used to monitor the flow rate of the seawater flowing through the tube bundle box 1 and output the flow rate data of the seawater. The turbidity monitoring unit 62 is used to monitor the turbidity of the seawater flowing through the tube bundle box 1 and output the turbidity data of the seawater.

[0045] The signal output ends of the flow rate monitoring unit 61 and the turbidity monitoring unit 62 are connected to the data processor through data cables, and the signal input end of the ultrasonic descaling module is connected to the signal output end of the data processor through data cables. The data processor receives the flow rate data and turbidity data of seawater to calculate the fouling coefficient in the tube bundle box 1, and performs real-time comparison of the fouling coefficient. When the fouling coefficient reaches the descaling threshold, the data processor controls the ultrasonic descaling module to start. The high-frequency vibration of the ultrasonic descaling module drives the seawater flowing through the tube bundle box 1 to flush the outer wall of the cooling tube bundle 4, and brushes off the silt and impurities attached to the outer wall of the cooling tube bundle 4 and discharges them through the outlet grille.

[0046] Reference Figure 4 In the embodiment of the present application, two sets of L-shaped mounting seats 13 arranged opposite to each other are fixedly mounted on the outer wall of the side panel 17, the two sets of L-shaped mounting plates are located on the upper and lower sides of the water outlet grille 12, and turbines 14 are fixedly mounted on the two sets of L-shaped mounting plates respectively; the flow rate monitoring unit 61 includes a plurality of ultrasonic ranging sensors 611 fixedly mounted on the outer wall of the side panel 17, the model of the ultrasonic ranging sensor 611 is ME-PC-8C, and the ultrasonic ranging sensor 611 is opposite to the plurality of turbines 14 one by one.

[0047] Among them, the side wall of the turbine 14 close to the ultrasonic ranging sensor 611 is fixedly installed with a sensing bump 141 by welding; the signal output end of the ultrasonic ranging sensor 611 is connected to a comparator through a signal line, and the signal output end of the comparator is connected to a single-chip microcomputer model STC12C2052AD through a signal line.

[0048] When seawater flows out through the water outlet grille 12 and drives the turbine 14 to rotate, the rotation of the turbine 14 can drive the sensing protrusion 141 to rotate and pass through the ultrasonic ranging sensor 611. When the sensing protrusion 141 passes through the ultrasonic ranging sensor 611, the sensing distance measured by the ultrasonic ranging sensor 611 is less than the set value, and the comparator outputs a high level signal after comparison.

[0049] The single chip microcomputer receives multiple high-level signals, calculates the occurrence frequencies of the multiple high-level signals respectively, and then takes the average value, so as to calculate the average rotation speed of the turbine 14. Since the rotation speed of the turbine 14 is positively correlated with the circulation speed of seawater (that is, the faster the seawater circulation speed, the faster the rotation speed of the turbine 14, and the slower the seawater circulation speed, the slower the rotation speed of the turbine 14), the single chip microcomputer can calculate the flow rate of the seawater circulation in the tube bundle box 1 based on the average value of the occurrence frequency of the high-level signals, thereby realizing the technical effect of automatically monitoring the seawater flow rate in the tube bundle box 1.

[0050] It should be noted that, in this embodiment, the turbidity monitoring unit 62 uses a turbidity sensor of model STM. The turbidity sensor is fixedly installed inside the tube bundle box 1 by screws. The turbidity of the seawater flowing through the tube bundle box 1 can be monitored in real time by the turbidity sensor.

[0051] Reference Figure 1 In this embodiment, the ultrasonic descaling module uses two ultrasonic descaling devices 63, the model of the ultrasonic descaling devices 63 is, and the two ultrasonic descaling devices 63 are respectively installed on the top of the tube bundle box 1 through connecting flanges, and the vibration heads of the two ultrasonic descaling devices 63 extend into the tube bundle box 1, and the vibration heads of the two ultrasonic descaling devices 63 are located on both sides of the cooling tube bundle 4 array.

[0052] When descaling is required, the data processing module controls the operation of two ultrasonic descaling devices 63. The ultrasonic descaling devices 63 drive the vibration head to vibrate at a high frequency, which can drive the water to flush the cooling tube bundle 4 at a high frequency. The scale attached to the outer wall of the cooling tube bundle 4 is separated from the tube wall after being vibrated and discharged through the water outlet grille 12 together with the flowing water.

[0053] It should be noted that in some other embodiments, the number of ultrasonic descaling devices 63 may be increased or decreased, and the installation position of the ultrasonic descaling devices 63 may be changed, depending on the size of the internal space of the tube bundle box 1 and the arrangement of the internal structure, which is not limited or elaborated herein.

[0054] Reference Figure 1 and Figure 2 In this embodiment, the spoiler structure includes a plurality of spoilers 15 fixedly mounted on the inner wall of the side plate 17. The spoilers 15 are used to disturb the seawater flowing into the tube bundle box 1, so that the impurities in the seawater are evenly distributed in the seawater and flow out through the water passages between the cooling tube bundles 4, thereby reducing the impurities floating on the seawater surface and causing the impurities to adhere to the box body and the cooling tube bundle 4.

[0055] Based on the ship cooler in the above technical solution, the present application also proposes a control method for the ship cooler, which mainly includes the following steps: Step S1: collecting tube bundle box monitoring data of seawater flowing through the tube bundle box, the tube bundle box monitoring data including flow rate data and turbidity data of the seawater; Step S2: Calculate the fouling coefficient Q in the tube bundle box based on the flow rate data and the turbidity data by a data processor; Step S3: setting a descaling threshold value e, comparing the scaling coefficient Q, and controlling the ultrasonic descaling module to run to perform the descaling operation when the scaling coefficient Q reaches the descaling threshold value.

[0056] By collecting the flow rate data and turbidity data of seawater flowing into the tube bundle box, the data processor calculates the fouling coefficient Q in the tube bundle box according to the collected flow rate data and turbidity data. By comparing the fouling coefficient Q, when the fouling coefficient Q reaches the descaling threshold, the ultrasonic descaling module can be controlled to perform descaling operations on the tube bundle box, thereby achieving the technical effect of automatic descaling.

[0057] Wherein, step S1 includes the following steps: step S11: a flow rate monitoring unit is arranged in the tube bundle box, and flow rate data output by the flow rate monitoring unit is collected at a time interval of 6 minutes; Step S12: a turbidity monitoring unit is arranged in the tube bundle box, and turbidity data outputted by the turbidity monitoring unit is collected at a time interval of 6 minutes.

[0058] Step S2 includes the following steps: obtaining the flow rate data and turbidity data of the seawater in the tube bundle box, and using the formula Calculate Q; where a is the weight of the flow rate data, b is the weight of the turbidity data, Vn is the flow rate data of seawater, in millimeters per second, and Zn is the turbidity data of seawater, in millimeters per second.

[0059] It should be noted that, in the embodiment of the present application, a is 220 and b is 2.3. In some other embodiments, the values ​​of a and b may be adjusted accordingly according to the needs of the actual navigation environment, which will not be limited or elaborated herein.

[0060] For example, please refer to Table 1, which shows the flow rate data and turbidity data collected within one hour starting from 0 min.

[0061] Table 1:

[0062] Among them, within one hour, Q=2.3×(226+224+223+226+225+224+221+223+226+222)+220×(2.3+2.1+2.1+2.2+2.2+2.3+2.3+2.1+2.2+2.4)=246. In the embodiment of the present application, the descaling threshold e=17500, the fouling coefficient Q=246, and the descaling threshold is not reached. The data processor does not control the two ultrasonic descalers to perform descaling operations on the tube bundle box. With the increase of navigation time, when the descaling coefficient Q reaches (or exceeds) 17500, the data processor controls the two ultrasonic descalers to run and automatically performs descaling operations on the tube bundle box.

[0063] It should be noted that, in some other embodiments, the numerical value of the descaling threshold value can be adjusted according to actual needs, which is not limited or elaborated here.

[0064] The implementation principle of a ship cooler and a control method thereof in an embodiment of the present application is as follows: when a ship is traveling along a route, a cooling medium is dispersedly flowed into a plurality of cooling tube bundles via a first flange, dispersed into a plurality of branch flows by the plurality of cooling tube bundles, and then flows out from a second flange; when the cooling medium flows through the cooling tube bundles, seawater enters the tube bundle box via a water inlet and flows out from the tube bundle box via a water outlet; the flowing seawater absorbs the heat carried by the cooling medium and takes it out, thereby achieving a technical effect of cooling the cooling medium; when the ship is traveling on the route, a flow rate monitoring unit monitors the flow rate through the tube bundle box in real time and outputs flow rate data; and a turbidity monitoring unit monitors the turbidity through the tube bundle box in real time. The data processor receives the flow rate data and turbidity data and then calculates the fouling coefficient Q in the tube bundle box. By comparing the fouling coefficient Q, a descaling control signal can be output when the fouling coefficient Q reaches the descaling threshold. When descaling is required, the data processing module controls the operation of two ultrasonic descalers. The ultrasonic descalers drive the vibration head to vibrate at high frequency, which can drive the water body to flush the cooling tube bundle at high frequency. The scale attached to the outer wall of the cooling tube bundle is separated from the tube wall after being vibrated and discharged through the water outlet grille together with the flowing water. By automatically descaling the tube bundle box, the occurrence of blockage of the cooling tube bundle caused by the adhesion of silt to the tube wall of the cooling tube bundle can be effectively reduced.

[0065] Embodiment 2: In this embodiment, three rows of water outlet grilles are provided, and three guide plates are rotatably mounted on the outer wall of the tube bundle box. The three guide plates are driven by a servo motor fixedly mounted on the outer wall of the tube bundle box.

[0066] Among them, a heat exchange control module for monitoring the heat exchange efficiency of the cooling tube bundle in the tube bundle box is fixedly installed on the tube bundle box. The heat exchange control module includes a specific heat capacity measuring instrument and a temperature measuring instrument installed on the outside of the tube bundle box. The specific heat capacity measuring instrument is used to monitor the specific heat capacity of seawater and output specific heat capacity data, and the temperature measuring instrument is used to monitor the temperature of seawater and output temperature data.

[0067] Combined with the data collector to collect the box flow rate data output by the microcontroller, based on the formula Calculate the total volume of water entering the tube bundle box per second. In the formula, Vk represents the seawater flow rate in the tube bundle box when the ship is stationary, in millimeters per second; Vj represents the circulation speed of seawater in the tube bundle box when the ship is running, in millimeters per second; Sy represents the total water outlet area of ​​the waist-shaped water outlet holes of the water outlet grille on the tube bundle box, in square millimeters. Since the size of the water outlet holes on the water outlet grille is uniformly fixed and the number is known, the total water outlet area of ​​the cooler can be calculated based on the known size data.

[0068] Based on the formula Calculate W, where W represents the amount of heat that can be exchanged per second by the cooler, in joules; where η represents the heat transfer efficiency of the cooler, which is a known value; and C represents the specific heat capacity of seawater, which is obtained by a specific heat capacity meter.

[0069] A controller is sealed and installed in the tube bundle box. The signal input end of the controller is connected to the temperature measuring instrument, the specific heat capacity measuring instrument and the signal output end of the single chip microcomputer. The signal output end of the controller is connected to the signal input end of the servo motor through a data cable.

[0070] When the ship is sailing along the route, the controller controls the servo motor to change the angle of the spoiler in the tube bundle box according to the temperature of the seawater, the specific heat capacity and the set heat exchange efficiency, so that the heat exchange efficiency of the heat exchanger remains stable, providing a stable and safe heat exchange effect for the marine equipment.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ship cooler, characterized in that: The invention comprises a tube bundle box (1), a mounting frame (2) is fixedly mounted on the tube bundle box (1), a tube sheet (3) is fixedly mounted on the mounting frame (2), a plurality of cooling tube bundles (4) for conveying cooling medium are mounted on the tube sheet (3), the cooling tube bundles (4) are all arranged in a U shape, and water passages for seawater circulation are formed between the plurality of cooling tube bundles (4), a valve cover (5) is fixedly mounted on the tube sheet (3), and a first flange (51) for cooling medium inflow and a second flange (52) for cooling medium outflow are mounted on the valve cover (5); A water inlet grille (11) and a water outlet grille (12) are provided on the box body of the tube bundle box (1); the water inlet grille (11) is provided at the bottom of the tube bundle box (1), and the water inlet grille (11) is located directly below the cooling tube bundle (4); the water outlet grille (12) is provided on the side wall of the tube bundle box (1), and the water outlet grille (12) is located on the side of the cooling tube bundle (4); A flow disturbance structure and a descaling device (6) are installed in the tube bundle box (1).

2. A ship cooler according to claim 1, characterized in that: The descaling device (6) comprises: A flow rate monitoring unit (61) is installed in the tube bundle box (1) and is used to monitor the flow rate of seawater in the tube bundle box (1); A turbidity monitoring unit (62) is installed on the tube bundle box (1) and is used to monitor the turbidity of seawater flowing through the tube bundle box (1); A data processor, connected to the signal input ends of the flow rate monitoring unit (61) and the turbidity monitoring unit (62), for calculating the fouling coefficient in the tube bundle box (1) according to the flow rate data and the water turbidity data, and outputting a descaling control signal when the fouling coefficient reaches a descaling threshold; An ultrasonic descaling module is fixedly installed in the tube bundle box (1), is signal-connected to the signal output terminal of the data processor, and is used to receive the descaling control signal and operate.

3. A ship cooler according to claim 2, characterized in that: Two groups of L-shaped mounting seats (13) are fixedly mounted on the outer side wall of the tube bundle box (1), the two groups of L-shaped mounting seats (13) are respectively arranged on the upper and lower sides of the water outlet grille (12), turbines (14) are rotatably mounted on the two groups of L-shaped mounting seats (13), and the turbines (14) are each provided with a sensing bump (141); The flow rate monitoring unit (61) comprises: A plurality of ultrasonic distance measuring sensors (611) are fixedly mounted on the outer side wall of the tube bundle box (1), respectively facing the mounting parts of the plurality of turbines (14), and are used to monitor the distance to the front shielding surface and output a sensing distance signal; A plurality of comparators, respectively connected to the signal output ends of the plurality of ultrasonic distance measuring sensors (611), for receiving the sensing distance signal and outputting a high level signal when the sensing distance signal is less than a set distance; A single chip microcomputer is signal-connected to the signal output ends of the plurality of comparators, and is used to receive the high level signal and calculate the flow rate of the seawater in the tube bundle box (1).

4. A ship cooler according to claim 3, characterized in that: The turbidity monitoring unit (62) comprises a turbidity sensor, and the turbidity sensor is fixedly installed inside the box body of the tube bundle box (1).

5. A ship cooler according to claim 4, characterized in that: The ultrasonic descaling module comprises two ultrasonic descaling devices (63), the two ultrasonic descaling devices (63) being mounted on the top of the tube bundle box (1) via a connecting flange, the vibration heads of the two ultrasonic descaling devices (63) extending into the tube bundle box (1), and the vibration heads of the two ultrasonic descaling devices (63) being located on both sides of the cooling tube bundle (4).

6. A ship cooler according to claim 1, characterized in that: The invention also comprises a first bracket (41) and a second bracket (42); the first bracket (41) and the second bracket (42) are provided with a plurality of jacks (421) adapted to the tube bodies of the cooling tube bundles (4); the plurality of jacks (421) are evenly arranged in a linear array on the first bracket (41) and the second bracket (42); the first bracket (41) and the second bracket (42) are sleeved on the plurality of cooling tube bundles (4).

7. A ship cooler according to claim 1, characterized in that: The spoiler structure comprises a plurality of spoiler plates (15), and the plurality of spoiler plates (15) are fixedly mounted in the box body of the tube bundle box (1).

8. A control method for a ship cooler according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1: collecting tube bundle box monitoring data of seawater flowing through the tube bundle box, wherein the tube bundle box monitoring data includes flow rate data and turbidity data of the seawater; Step S2: Calculate the fouling coefficient Q in the tube bundle box based on the flow rate data and the turbidity data by a data processor; Step S3: setting a descaling threshold value e, comparing the scaling coefficient Q, and controlling the ultrasonic descaling module to run to perform the descaling operation when the scaling coefficient Q reaches the descaling threshold value.

9. A control method for a ship cooler according to claim 8, characterized in that: The step S1 comprises the following steps: Step S11: a flow rate monitoring unit is arranged in the tube bundle box, and flow rate data outputted by the flow rate monitoring unit is collected at a time interval of 6 minutes; Step S12: a turbidity monitoring unit is arranged in the tube bundle box, and turbidity data outputted by the turbidity monitoring unit is collected at a time interval of 6 minutes.

10. A control method for a ship cooler according to claim 9, characterized in that: The step S2 comprises the following steps: Step S21: Obtain the flow rate data and turbidity data of the seawater in the tube bundle box, and use the formula Calculate Q; where a is the weight of the flow rate data, b is the weight of the turbidity data, Vn is the flow rate data of seawater, and Zn is the turbidity data of seawater.

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