CN216409865U

CN216409865U - Main machine cooling water heat exchanger

Info

Publication number: CN216409865U
Application number: CN202123325024.9U
Authority: CN
Inventors: 高雪飞
Original assignee: Yixing Wansheng Petrochemical Machinery Equipment Co ltd
Current assignee: Yixing Wansheng Petrochemical Machinery Equipment Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-29
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a main machine cooling water heat exchanger, which belongs to the technical field of heat exchangers and comprises a shell, a heat exchange tube assembly arranged in the shell, and a first end cover and a second end cover which are respectively arranged at two ends of the shell, wherein the shell is provided with a first inlet, a first outlet and a third outlet, the heat exchange tube assembly comprises a plurality of heat exchange tubes, the first end cover is provided with a second inlet and a second outlet which are respectively communicated with the heat exchange tubes, and the first end cover is provided with a partition plate for separating the second inlet and the second outlet. The utility model can obtain the cooling water of the main machine with different outlet temperatures under the condition of not reducing the flow of the seawater, thereby reducing the risk of pipeline blockage in the heat exchanger while ensuring the operation and use of the main machine; the water quantities of the two outlets can be controlled, so that the water temperature of the cooling water returning to the main machine can be controlled, and different cooling water temperature requirements during the operation of the main machine are met; the elastic impact-resistant plate is arranged, so that the heat exchange tube is protected, and the service life of the heat exchange tube is prolonged.

Description

Main machine cooling water heat exchanger

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a cooling water heat exchanger of a main machine.

Background

The main engine cooling water is water for cooling the ship main engine, in the running process of the ship main engine, the heat is overhigh when each cylinder runs, water with a certain temperature is needed to be used for circulating to cool each cylinder of the main engine, the exhaust temperature and the temperature in the cylinder can be effectively reduced, generally fresh water is used as the cooling water, the temperature of the cooling water rises after passing through each cylinder of the main engine, a seawater heat exchanger is generally used for cooling the cooling water, the cooling water has requirements on the temperature of the cooling water entering the main engine, the outlet temperature of the cooling water flowing out of the heat exchanger is generally controlled by controlling the flow of the seawater entering the seawater heat exchanger, and the internal heat exchange pipeline is easily blocked by silt after the heat exchanger is used for a long time due to the reduction of the flow of the seawater, so that the heat exchange efficiency and the service life of the heat exchanger are influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: in view of the above problems in the prior art, the present invention provides a main unit cooling water heat exchanger capable of obtaining main unit cooling water with different outlet temperatures.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a host computer cooling water heat exchanger, is in including casing, setting heat exchange tube assembly in the casing and setting respectively the first end cover and the second end cover at casing both ends, be equipped with first import, first export and third export on the casing, heat exchange tube assembly includes many heat exchange tubes, be equipped with on the first end cover with second import and the second export of heat exchange tube intercommunication respectively, be equipped with the separation on the first end cover the division board of second import and second export.

Preferably, the distance between the first inlet and the third outlet is less than the distance between the first inlet and the first outlet.

Preferably, a first opening valve and a first temperature sensor are arranged on the first outlet, and a second opening valve and a second temperature sensor are arranged on the third outlet.

Preferably, the first outlet and the third outlet are respectively connected with a circulating pipe, and a third temperature sensor is arranged on the circulating pipe

Preferably, a plurality of arc-shaped baffle plates are arranged in the shell.

Preferably, the shell comprises a first tube plate and a second tube plate which are respectively connected with two ends of the heat exchange tube, a first sealing gasket is arranged between the first end cover and the first tube plate, and a second sealing gasket is arranged between the second end cover and the second tube plate.

Preferably, a plurality of first zinc blocks are arranged in the first end cover, and a second zinc block is arranged in the second end cover.

Preferably, an elastic impact-resistant plate for blocking the first medium entering from the first inlet is arranged on the shell.

Has the advantages that: compared with the prior art, the utility model has the following advantages: 1. by arranging the first outlet and the third outlet on the shell and adopting heat exchange paths with different distances, the cooling water of the main machine with different outlet temperatures can be obtained under the condition of not reducing the flow of seawater, and the risk of pipeline blockage in the heat exchanger is reduced while the main machine is ensured to be operated and used; 2. the first opening valve and the second opening valve are arranged, so that the water quantities of the two outlets can be controlled, the water temperature of the cooling water returning to the main machine can be controlled, and different cooling water temperature requirements during the operation of the main machine are met; 3. the elastic impact-resistant plate is arranged, so that the heat exchange tube is protected, and the service life of the heat exchange tube is prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic diagram of an elastic impact-resistant plate structure.

Detailed Description

The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, a host machine cooling water heat exchanger comprises a shell 1, a heat exchange tube assembly 2, a first end cover 3 and a second end cover 4, wherein the shell 1 is cylindrical, the heat exchange tube assembly 2 comprises a plurality of heat exchange tubes 21, the heat exchange tube assembly 2 is arranged in the shell 1, the first end cover 3 is arranged at the left end of the shell 1, the second end cover 4 is arranged at the right end of the shell 1, a first tube plate 15 is arranged at the left end of the shell 1, a second tube plate 16 is arranged at the right end, the first tube plate 15 is welded with the left end of the heat exchange tubes 21, the second tube plate 16 is welded with the right end of the heat exchange tubes 21, so that the heat exchange tube assembly 2 is fixed on the shell 1, a first sealing gasket is arranged between the first end cover 3 and the first tube plate 15, a second sealing gasket is arranged between the second end cover 4 and the second tube plate 16, so that the two end covers are hermetically connected with the shell 1, the upper end wall of the first end cover 3 is provided with a second inlet 31, the lower end side wall is provided with a second outlet 32, a partition plate 33 for separating the second inlet 31 from the second outlet 32 is arranged in the first end cover 3, the partition plate 33 is arranged in the middle of the first end cover 3 and is abutted against the first sealing gasket, so that the heat exchange tube assembly 2 is divided into an upper half part and a lower half part, seawater enters the first end cover 3 from the second inlet 31, enters the second end cover 4 through the heat exchange tube 21 of the upper half part under the blockage of the partition plate 33, then returns to the first end cover 3 from the heat exchange tube 21 of the lower half part, and then flows out from the second outlet 32.

The side wall of the shell 1 near the left end is provided with a first inlet 11, the side wall near the right end is provided with a first outlet 12, the side wall of the middle part of the shell 1 is provided with a third outlet 13, the first inlet 11 is used for connecting host cooling water, heat exchange is completed between the inside of the shell 1 and seawater in the heat exchange tube 21, the shell 1 is internally provided with a plurality of arc-shaped baffle plates 14 for increasing the circulation path of the host cooling water and changing the laminar flow of the host cooling water in the shell 1 into turbulent flow so as to improve the heat exchange efficiency, the first outlet 12 and the third outlet 13 are used for flowing out the host cooling water after heat exchange and temperature reduction, because the distance between the first inlet 11 and the third outlet 13 is small, the path of the host cooling water flowing in the shell 1 is short, the heat exchange time with the seawater is short, the distance between the first inlet 11 and the first outlet 12 is long, the path of the host cooling water flowing in the shell 1 is long, the heat exchange time with the seawater is long, so that the temperature of the main machine cooling water flowing out of the first outlet 12 is lower than that of the main machine cooling water flowing out of the third outlet 13.

The first outlet 12 is provided with a first opening valve 121 and a first temperature sensor 122, the third outlet 13 is provided with a second opening valve 131 and a second temperature sensor 132, the first opening valve 121 and the second opening valve 131 are valves capable of controlling the opening, the first temperature sensor 122 and the second temperature sensor 132 detect the water temperatures at the two outlets and send water temperature signals to an external controller, and the circulating pipe 9 connected with the first outlet 12 and the third outlet 13 is provided with a third temperature sensor 91. The two valves can also be manually controlled, and the opening degree can be manually controlled according to the readings of the field instruments of the three temperature sensors.

First zinc piece 34 is equipped with respectively to first end cover 3 internal upper half and latter half, is equipped with second zinc piece 41 in the second end cover 4, and cylindrical zinc rod and end cover joint are chooseed for use to two kinds of zinc pieces, because the heat exchanger is in the course of the work, causes the corruption to shell and pipe wall easily because of long-time and sea water contact. Therefore, a zinc rod is required to be added and used as a sacrificial anode to avoid the heat exchanger from being rapidly corroded by seawater.

As shown in fig. 1 and 2, the shell 1 is provided with an elastic impact-resistant plate 17 for blocking the main machine cooling water entering from the first inlet 11, and the elastic impact-resistant plate 17 is made of a steel plate with certain elasticity, so that impact pressure of the main machine cooling water entering the shell 1 is borne, the heat exchange tube 21 in the shell 1 is protected, the heat exchange tube 21 is prevented from being damaged after being impacted, and the service life of the heat exchange tube 21 is prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a host computer cooling water heat exchanger, its characterized in that includes casing (1), sets up heat exchange tube assembly (2) in casing (1) and set up respectively first end cover (3) and second end cover (4) at casing (1) both ends, be equipped with first import (11), first export (12) and third export (13) on casing (1), heat exchange tube assembly (2) are including many heat exchange tubes (21), be equipped with on first end cover (3) with second import (31) and second export (32) that heat exchange tube (21) communicate respectively, be equipped with on first end cover (3) and separate division board (33) of second import (31) and second export (32).

2. The main machine cooling water heat exchanger according to claim 1, characterized in that the distance between the first inlet (11) and the third outlet (13) is smaller than the distance between the first inlet (11) and the first outlet (12).

3. The main machine cooling water heat exchanger according to claim 2, wherein a first opening valve (121) and a first temperature sensor (122) are provided on the first outlet (12), and a second opening valve (131) and a second temperature sensor (132) are provided on the third outlet (13).

4. The main machine cooling water heat exchanger according to claim 3, characterized in that the first outlet (12) and the third outlet (13) are respectively connected with a circulation pipe (9), and a third temperature sensor (91) is arranged on the circulation pipe (9).

5. The main machine cooling water heat exchanger according to claim 1, characterized in that a plurality of arc-shaped baffles (14) are provided in the housing (1).

6. The main machine cooling water heat exchanger according to claim 1, wherein the shell (1) comprises a first tube plate (15) and a second tube plate (16) which are respectively connected with two ends of the heat exchange tube (21), a first sealing gasket is arranged between the first end cover (3) and the first tube plate (15), and a second sealing gasket is arranged between the second end cover (4) and the second tube plate (16).

7. The main machine cooling water heat exchanger according to claim 1, characterized in that a plurality of first zinc blocks (34) are provided in the first end cover (3), and a second zinc block (41) is provided in the second end cover (4).

8. The main machine cooling water heat exchanger according to claim 1, characterized in that the housing (1) is provided with an elastic impact resistant plate (17) for blocking the first medium entering from the first inlet (11).