A condenser facilitating circulation of cooling water

Abstract

The utility model belongs to condenser technical field provides a condenser convenient for cooling water circulation, including casing, tube sheet, head, heat exchange tube bundle, refrigerant import pipe and refrigerant export pipe, is provided with the pipe box in the left end of casing, the middle part of pipe box is provided with the water distribution baffle, divides the water distribution baffle into the water inlet storehouse of being located lower part and the water outlet storehouse of being located upper part, is provided with the cooling water inlet pipe of intercommunication with water inlet storehouse in the lower part of pipe box, is provided with the cooling water outlet pipe of intercommunication with water outlet storehouse in the upper part, the lower part of cooling water inlet pipe is provided with the filter pipe body of intercommunication with it vertically, is provided with the filter bowl in filter pipe body, the upper end of filter bowl is the open end of inclined shape, and its opening direction is towards the water inlet direction of cooling water. The utility model can effectively intercept the silt, incrustation and other impurities in water, prevent its inside heat exchange copper pipe from causing the blockage, and dismounts and washes conveniently, is convenient for cooling water circulation, guarantees the stable of heat exchange efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of condenser technology, specifically, it relates to a condenser that facilitates cooling water circulation. Background Technology

[0002] The condenser is the core heat exchange device in the refrigeration system. Its main function is to cool and condense the high-temperature and high-pressure gaseous refrigerant discharged from the compressor into a liquid state. The shell and tube condenser is a type of condenser that uses shell and tube as the heat transfer medium. Because shell and tube have a large heat transfer coefficient and good thermal conductivity, they are widely used in refrigeration equipment.

[0003] In the existing technology, the structure of shell and tube condensers mainly includes a cylindrical shell, end caps and end caps at both ends of the shell, a copper tube bundle inside the shell, and refrigerant inlet, refrigerant outlet, cooling water inlet, and cooling water outlet set on the shell. It has the following main shortcomings: (1) Inlet scouring problem: High-pressure refrigerant enters the shell at high speed from the refrigerant inlet, which will directly and centrally impact the copper tube bundle in the inlet area. Under long-term and continuous scouring, the copper tube at this location is prone to vibration, wear, or even deformation and cracking, which seriously affects the service life and reliability of the equipment; (2) Pipe blockage problem: When the cooling water quality is poor, such as containing a lot of mud, scale or other impurities, the impurities are very easy to deposit on the inner wall of the copper tube or accumulate at the pipe opening, causing blockage of the cooling water channel, which is not conducive to cooling water circulation; The above problems will not only greatly reduce the heat exchange efficiency, but also lead to increased condensing pressure and increased energy consumption. In severe cases, it may even be necessary to shut down for cleaning and maintenance, affecting the stable operation of the system. Utility Model Content

[0004] The purpose of this invention is to provide a condenser that facilitates cooling water circulation, thereby solving the technical problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A condenser for facilitating cooling water circulation includes a cylindrical shell, tube sheets at both ends of the shell, a head at the right end of the shell connected to the tube sheet, a heat exchange tube bundle inside the shell consisting of several heat exchange copper tubes, a refrigerant inlet pipe and a refrigerant outlet pipe on the shell, a tube box at the left end of the shell connected to the tube sheet, a water divider in the middle of the tube box dividing it into a lower inlet chamber and an upper outlet chamber, a cooling water inlet pipe communicating with the inlet chamber at the lower part of the tube box, and a cooling water outlet pipe communicating with the outlet chamber at the upper part of the tube box, a filter tube body vertically connected to the lower part of the cooling water inlet pipe, a filter cartridge inside the filter tube body, the upper end of the filter cartridge being an inclined open end facing the direction of cooling water inlet.

[0006] Preferably, the lower end of the filter tube is provided with a connecting flange, through which a cover can be detachably installed.

[0007] Preferably, the upper end of the filter cartridge abuts against the upper inner wall of the cooling water inlet pipe, and the diameter of the opening end of the filter cartridge matches the diameter of the cooling water outlet pipe.

[0008] Preferably, the mesh size of the filter cartridge is between 20 and 40 mesh.

[0009] Preferably, a V-shaped guide plate is provided on the inner wall of the housing and at a position directly opposite the refrigerant inlet pipe. Connecting rods are vertically arranged on the two side flanges of the V-shaped guide plate, and the V-shaped guide plate is connected to the inner wall of the housing through the connecting rods.

[0010] Preferably, the two side flanges of the V-shaped guide vane are arc-shaped, and their curvature matches the curvature of the inner wall of the shell.

[0011] Preferably, the distance between the V-shaped guide plate and the refrigerant inlet is 1 to 1.5 times the diameter of the refrigerant inlet pipe.

[0012] Preferably, an exhaust pipe is also provided on the right side of the housing.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) This utility model is equipped with a pipe box, which integrates a cooling water inlet pipe and a cooling water outlet pipe. At the same time, a filter pipe body connected to the cooling water inlet pipe is set. The filter pipe body has a removable filter cylinder inside, which can effectively intercept impurities such as mud and scale in the water and prevent them from entering the heat exchange copper tube and causing blockage. When the filter cylinder needs to be cleaned, it can be taken out by simply removing the cover. After cleaning, it can be reinstalled. The operation is simple and convenient, which greatly reduces the maintenance difficulty and cost, facilitates cooling water circulation, and ensures the stability of heat exchange efficiency.

[0014] (2) This utility model uses a V-shaped guide plate set at the refrigerant inlet to buffer and disperse the high-speed refrigerant, so that it flows evenly to the baffle plate area, avoiding the refrigerant from concentrating and directly scouring the local tube bundle, significantly reducing the risk of tube bundle damage due to scouring, and extending the overall service life of the condenser. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the diagram.

[0017] Figure 3 This is a schematic diagram of the V-shaped guide plate in this utility model.

[0018] The component names corresponding to the reference numerals in the attached drawings are as follows: 1-shell, 2-tube sheet, 3-end, 4-heat exchange tube bundle, 5-refrigerant inlet pipe, 6-refrigerant outlet pipe, 7-tube box, 8-water distribution baffle, 9-water inlet chamber, 10-water outlet chamber, 11-cooling water inlet pipe, 12-cooling water outlet pipe, 13-filter tube body, 14-filter cartridge, 15-connecting flange, 16-cap, 17-V-shaped guide plate, 18-connecting rod, 19-exhaust pipe, 20-wing plate. Detailed Implementation

[0019] To enable those skilled in the art to have a clearer understanding of this utility model, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model and facilitate understanding. The technical solutions provided by this utility model are not limited to those provided in the following embodiments, nor should they limit the scope of protection of this utility model.

[0020] Example like Figures 1-3As shown, this embodiment provides a condenser that facilitates cooling water circulation. The condenser mainly includes a cylindrical shell 1, with tube sheets 2 fixedly installed at both ends of the shell 1 via welding or flange connections. A head 3, typically elliptical or butterfly-shaped, is connected to the right end of the shell 1 and grounded to the tube sheet 2 on the right side, used to seal one end of the shell 1. Inside the shell 1, a heat exchange tube bundle 4 is arranged, consisting of multiple heat exchange copper tubes in a specific pattern. The ends of these heat exchange copper tubes are expanded or welded to the tube sheets 2 at both ends, thus separating the tube side and shell side. A refrigerant inlet pipe 5 and a refrigerant outlet pipe 6 are opened and connected to the shell body of the shell 1. The refrigerant inlet pipe 5 is located at the upper part of the shell 1, and the refrigerant outlet pipe 6 is located at the lower part of the shell 1. These two pipes are used to guide gaseous refrigerant into the shell side and liquid refrigerant out of the shell side, respectively.

[0021] In this embodiment, a tube box 7 connected to the tube sheet 2 is provided at the left end of the shell 1, and a flange connector is provided at the right end of the tube box 7, which is used to connect to the tube sheet 2. A water distribution baffle 8 is fixedly welded to the middle of the tube box 7, which strictly divides the inner cavity of the tube box 7 into two independent parts: a water inlet chamber 9 located at the bottom and a water outlet chamber 10 located at the top. A cooling water inlet pipe 11 connected to the water inlet chamber 9 is connected to the lower wall of the tube box 7; a cooling water outlet pipe 12 connected to the water outlet chamber 10 is connected to the upper wall of the tube box 7. Cooling water enters the water inlet chamber 9 from the cooling water inlet pipe 11, flows through the tubes (tube side) of the heat exchange tube bundle 4, enters the water outlet chamber 10 from the other end, and finally exits from the cooling water outlet pipe 12, completing one cycle.

[0022] In order to effectively filter the cooling water and prevent impurities from clogging the small heat exchange copper tubes, this embodiment has a filter tube 13 vertically welded to the lower part of the cooling water inlet pipe 11 and communicating with its interior. The filter tube 13 essentially forms a filter branch. Inside the filter tube 13, a filter cartridge 14 is placed. The upper end of the filter cartridge 14 is machined into an inclined opening, and its opening direction is directly facing the water inlet direction of the cooling water inlet pipe 11. This design can utilize the impact force of the water flow itself to make it easier for impurities to enter and be retained inside the filter cartridge 14, while reducing the resistance when the water flows through the filter element.

[0023] In a preferred embodiment, a connecting flange 15 is welded to the lower end of the filter tube 13, and a matching cover 16 is detachably mounted on the connecting flange 15 by bolts. This structure makes it very convenient to remove the filter cartridge 14 from below simply by opening the cover 16 when cleaning or replacing it.

[0024] The uppermost edge of the inclined opening at the upper end of the filter cartridge 14 abuts against the inner wall of the upper end of the cooling water inlet pipe 11. This installation method can ensure that most or even all of the incoming water is forced to pass through the filter cartridge 14 for filtration. At the same time, the diameter of the inclined opening end of the filter cartridge 14 matches the diameter of the cooling water outlet pipe 12.

[0025] As a preferred embodiment, the filtration accuracy of the filter cartridge 14 is preferably between 20 and 40 mesh. Tests have shown that this range of filtration accuracy can effectively intercept larger particulate impurities that may cause blockage of the heat exchange tubes, while avoiding excessive filtration resistance and frequent cleaning due to excessively high mesh counts. A good balance is achieved between filtration effect and operating cost.

[0026] In this embodiment, to address the issue of uneven refrigerant distribution caused by direct impact on local heat exchange tubes after refrigerant enters through the inlet, a V-shaped guide plate 17 is installed on the inner wall of the shell 1, directly opposite the refrigerant inlet pipe 5. This V-shaped guide plate 17 consists of two wing plates, which evenly distribute the incoming gaseous refrigerant to both sides, preventing the airflow from directly scouring the copper tubes. The V-shaped guide plate 17 is connected and fixed to the inner wall of the shell 1 by connecting rods 18 vertically welded to its two wing plates, resulting in a simple and reliable structure.

[0027] In order to better fit the arc-shaped structure of the inner wall of the shell, achieve better flow guidance and reduce stagnation area, the two side wings of the V-shaped guide plate 17 can be designed to be arc-shaped, and their curvature is adapted to the curvature of the inner wall of the shell 1.

[0028] The distance between the tip of the V-shaped guide plate 17 and the outlet end face of the refrigerant inlet pipe 5 is preferably 1 to 1.5 times the diameter of the refrigerant inlet pipe 5. This distance range ensures that the guide plate effectively disperses the fluid without obstructing the inlet flow or generating excessive noise due to being too close, or weakening the guiding effect due to being too far.

[0029] In addition, an exhaust pipe 19 is provided on the top right side of the casing 1. The exhaust pipe 19 is used to remove non-condensable gases accumulated in the casing after the initial operation or maintenance of the equipment.

[0030] The working principle of this utility model is as follows: Cooling water flows in from the cooling water inlet pipe 11 and first enters the vertical filter tube 13. The water flow impacts the inclined opening of the filter cartridge 14, and impurities are intercepted and filtered by the filter cartridge 14. The clean water flows upward into the water inlet chamber 9, and then is distributed to the lower half of the heat exchange copper tubes, flowing to the left. After the water flow turns, it flows into the upper half of the heat exchange copper tubes, flowing to the right, and finally gathers in the water outlet chamber 10 and is discharged from the cooling water outlet pipe 12. At the same time, high-temperature gaseous refrigerant enters the shell side of the shell 1 from the refrigerant inlet pipe 5, impacts the V-shaped guide plate 17, and is evenly dispersed into the heat exchange tube bundle 4. After heat exchange with the cooling water in the tubes, it condenses into liquid and is discharged from the refrigerant outlet pipe 6; non-condensable gases are discharged through the exhaust pipe 19.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A condenser for facilitating cooling water circulation, comprising a cylindrical shell (1), tube sheets (2) disposed at both ends of the shell (1), a head (3) disposed at the right end of the shell (1) and connected to the tube sheet (2) at that end, a heat exchange tube bundle (4) disposed inside the shell (1) and composed of a plurality of heat exchange copper tubes, and a refrigerant inlet pipe (5) and a refrigerant outlet pipe (6) opened on the shell (1), characterized in that: A pipe box (7) connected to the end tube plate (2) is provided at the left end of the housing (1). A water dividing plate (8) is provided in the middle of the pipe box (7). The pipe box (7) is divided into a water inlet chamber (9) at the bottom and a water outlet chamber (10) at the top by the water dividing plate (8). A cooling water inlet pipe (11) connected to the water inlet chamber (9) is provided at the bottom of the pipe box (7), and a cooling water outlet pipe (12) connected to the water outlet chamber (10) is provided at the top. A filter pipe body (13) connected to the cooling water inlet pipe (11) is vertically provided at the bottom. A filter cylinder (14) is provided in the filter pipe body (13). The upper end of the filter cylinder (14) is an inclined open end, and its opening direction is towards the cooling water inlet direction.

2. The condenser for facilitating cooling water circulation according to claim 1, characterized in that: The lower end of the filter tube (13) is provided with a connecting flange (15), and a cover (16) can be detachably installed through the connecting flange (15).

3. The condenser for facilitating cooling water circulation according to claim 2, characterized in that: The upper end of the filter cartridge (14) abuts against the upper inner wall of the cooling water inlet pipe (11), and the diameter of the opening end of the filter cartridge (14) matches the diameter of the cooling water outlet pipe (12).

4. The condenser for facilitating cooling water circulation according to claim 3, characterized in that: The mesh size of the filter cartridge (14) is between 20 and 40 mesh.

5. The condenser for facilitating cooling water circulation according to any one of claims 1 to 4, characterized in that: A V-shaped guide plate (17) is provided on the inner wall of the housing (1) and at the position opposite to the refrigerant inlet pipe (5). A connecting rod (18) is vertically provided on the two side wings of the V-shaped guide plate (17). The V-shaped guide plate (17) is connected to the inner wall of the housing (1) through the connecting rod (18).

6. The condenser for facilitating cooling water circulation according to claim 5, characterized in that: The two side wings of the V-shaped guide plate (17) are arc-shaped, and their curvature is adapted to the curvature of the inner wall of the shell (1).

7. The condenser for facilitating cooling water circulation according to claim 6, characterized in that: The distance between the V-shaped guide plate (17) and the refrigerant inlet is 1 to 1.5 times the diameter of the refrigerant inlet pipe (5).

8. The condenser for facilitating cooling water circulation according to claim 6 or 7, characterized in that: An exhaust pipe (19) is also provided on the right side of the housing (1).

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