Water-cooled condenser with descaling device

Abstract

The utility model relates to refrigeration equipment technical field, concretely is a water -cooled condenser with scale removing device, including the casing, the inside of casing is equipped with the multiple parallelly arranged heat exchange pipe, the inner wall of casing is along the axial interval and is equipped with multiple groups of deflector assembly, each group of deflector assembly includes the multiple base that evenly distributed along the circumference, the base is fixed in the inner wall of casing and is from its radial extension arc deflector piece, and the inner wall of casing still is equipped with annular turbulent flow convex ring, and the outer peripheral surface on annular turbulent flow convex ring is evenly distributed with multiple elastic deflector wing piece along the circumferential direction. This water -cooled condenser with scale removing device can effectively flush the inner wall of casing and heat exchange pipe outer surface, promote self -cleaning ability, reduce the frequency of shutdown maintenance.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically a water-cooled condenser with a descaling device. Background Technology

[0002] Water-cooled condensers release heat by exchanging heat with refrigerant through the flow of cooling water in the shell or tube side. During long-term operation, suspended solids, silt, algae, and microorganisms in the cooling water can easily accumulate inside the equipment, forming a fouling layer that affects heat exchange efficiency.

[0003] Existing water-cooled condensers mostly employ a shell-and-tube structure, with cooling water flowing through the interior of the heat exchange tubes or the shell-side space. When the cooling water flows through the shell side, due to the complex flow channels and uneven velocity distribution, sediment and biological slime easily accumulate on the inner wall of the shell, in the tube sheet area, and in the gaps between the tube bundles. Conventional structures lack effective guidance for the shell-side water flow, resulting in localized low-velocity zones or even stagnant zones where fouling is difficult to flush away. Maintenance can only be carried out manually after shutdown and disassembly, leading to high maintenance costs and long maintenance cycles. Currently, there is no segmented, multi-stage flow guiding structure designed for the inner wall area of ​​the shell to actively improve the flow field distribution and achieve self-cleaning functionality. Utility Model Content

[0004] The purpose of this invention is to provide a water-cooled condenser with a descaling device to solve the problem mentioned in the background art of the current water-cooled condenser shell inner wall and tube bundle gap area, which is prone to dirt accumulation and difficult to clean due to insufficient water flow guidance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled condenser with a descaling device, comprising a shell, wherein multiple heat exchange tubes are arranged in parallel inside the shell, and multiple sets of guide plate assemblies are axially spaced on the inner wall of the shell, each set of guide plate assemblies comprising multiple bases evenly distributed circumferentially, the bases being fixed to the inner wall of the shell and extending radially from them into arc-shaped guide plate pieces, and the inner wall of the shell also having an annular turbulence protrusion, the annular turbulence protrusion being located in the axial region between adjacent guide plate assemblies, and multiple elastic guide vanes evenly distributed circumferentially on the outer circumferential surface of the annular turbulence protrusion.

[0006] Preferably, the base is fixed to the inner wall of the shell by welding or integral molding, and its cross-section is trapezoidal or rectangular, with a slot at the top for installing the arc-shaped guide plate.

[0007] Preferably, the radius of curvature of the arc-shaped guide plate is 1 / 3 to 1 / 2 of the inner diameter of the shell, and its surface is tilted forward along the cooling water flow direction at an angle of 20°-50°.

[0008] Preferably, the annular turbulence protrusion is continuously arranged along the circumference of the shell, and its cross-section is a semi-circular structure with a height of 2-5mm.

[0009] Preferably, the outer circumferential surface of the annular turbulence protrusion is provided with multiple mounting grooves, and the elastic guide vane is fixed in the mounting groove by an embedding method.

[0010] Preferably, the elastic guide vane is made of flexible stainless steel or corrosion-resistant elastic alloy sheet, has an arc-shaped structure, and a thickness of 0.5-1.5mm.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This water-cooled condenser with a descaling device enables the cooling water to generate multi-stage swirling flow and local turbulence during the flow process, effectively scouring the inner wall of the shell and the outer surface of the heat exchange tubes, improving self-cleaning ability, and reducing the frequency of downtime maintenance. This water-cooled condenser with a descaling device, through the axially spaced guide plate assembly on the inner wall of the shell, combined with the directional guiding effect of the base and the arc-shaped guide plate, forms an ordered swirling flow. This, combined with the flow channel compression and vortex-induced effect of the annular turbulence protrusion, and the dynamic oscillating disturbance generated by its outer elastic guide vanes, synergistically enhances the scouring effect on the tube bundle gaps and shell sidewalls, significantly improving the shell-side flow field distribution, effectively preventing the deposition of silt and biofilm, and achieving online self-cleaning during operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a water-cooled condenser with a descaling device according to the present invention;

[0013] Figure 2 This is a side view of a multi-group guide plate assembly of a water-cooled condenser with a descaling device according to the present invention.

[0014] Figure 3 This is a schematic diagram of the connection structure between the elastic guide vanes and the annular turbulence protrusion of a water-cooled condenser with a descaling device according to this utility model.

[0015] In the figure: 1. Shell; 2. Heat exchange tube; 3. Baffle assembly; 4. Base; 5. Arc-shaped baffle plate; 6. Annular turbulence protrusion; 7. Elastic baffle vane. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a water-cooled condenser with a descaling device, including a shell 1. The shell 1 contains multiple heat exchange tubes 2 arranged in parallel. Multiple sets of guide plate assemblies 3 are axially spaced on the inner wall of the shell 1. Each set of guide plate assemblies 3 includes multiple bases 4 evenly distributed circumferentially. The bases 4 are fixed to the inner wall of the shell 1 and extend radially from them arc-shaped guide plate pieces 5. The inner wall of the shell 1 also has an annular turbulence-inducing protrusion 6, located in the axial region between adjacent guide plate assemblies 3. Multiple elastic guide vanes 7 are evenly distributed circumferentially on the outer circumferential surface of the annular turbulence-inducing protrusion 6. The elastic guide vanes 7 are cantilevered and connected to the annular turbulence-inducing protrusion 6, and can oscillate with the water flow. This structure allows cooling water to flow from the shell... 1. The water enters and flows through the internal space, first contacting the axially spaced guide vane assemblies 3. Guided by the arc-shaped guide vane plates 5 supported by the base 4 of each set of guide vane assemblies 3, the water forms a circumferentially ordered deflection flow. Due to the staggered distribution of each set of guide vane assemblies 3 in the circumferential direction, the water continuously changes direction during its axial advancement, generating a multi-stage swirling effect, effectively breaking the laminar flow boundary and enhancing the scouring effect on the inner wall of the shell 1 and the outer wall of the heat exchange tube 2. When the water enters the axial region between adjacent guide vane assemblies 3, it encounters the annular turbulence protrusion 6. Its continuous protrusion structure further compresses the flow channel, increases the local flow velocity, and forces the water to circulate and generate vortices. The multiple elastic guide vanes 7 distributed on the outer circumferential surface of the annular turbulence protrusion 6 are impacted by the water flow. The impact causes periodic oscillations, forming dynamic pulse disturbances that continuously agitate the stagnant areas in the tube bundle gaps. This prevents the deposition of silt and biological slime on the outer surface of the heat exchange tubes 2 and the inner wall of the shell 1, thus achieving a self-cleaning function during operation. This solves the problems in existing technologies where the lack of effective guidance for the shell-side water flow leads to the easy accumulation of fouling on the inner wall of the shell 1, the tube sheet area, and the tube bundle gaps, forming low-velocity or stagnant areas, making descaling difficult, and requiring manual cleaning by shutting down the machine. The base 4 is fixed to the inner wall of the shell 1 by welding or integral molding. Its cross-section is trapezoidal or rectangular, and the top is provided with an insertion slot for installing the arc-shaped guide plate 5. This structure, through the reliable connection between the base 4 and the inner wall of the shell 1, ensures that the guide plate assembly 3 is stable and does not loosen under the impact of water flow. Its trapezoidal or rectangular cross-section enhances structural strength and positioning accuracy. The insertion slot at the top facilitates the quick installation and replacement of the arc-shaped guide plate 5, improving the assembly efficiency and maintenance convenience of the overall structure. The radius of curvature of the arc-shaped guide plate 5 is 1 / 3 to 1 / 2 of the inner diameter of the shell 1. Its plate surface is tilted forward along the cooling water flow direction at an angle of 20°-50°. This structure enables the arc-shaped guide plate 5 to effectively guide the cooling water to form a spiral flow that adheres to the wall, enhancing the scouring force of the mainstream on the inner wall of the shell 1 and the outer surface of the heat exchange tube 2, while reducing flow resistance and avoiding excessive pressure drop. This ensures efficient turbulence and self-cleaning effects with reasonable energy consumption. The annular turbulence protrusion 6 is continuously arranged along the circumference of the shell 1, with a semi-circular cross-section and a height of 2-5mm.This structure, through the continuous protrusion design of the annular turbulent ring 6 on the inner wall of the shell 1, effectively compresses the flow channel and changes the water flow direction, promotes boundary layer separation, forms local vortices, enhances disturbance in the low-velocity region of the shell side, prevents sediment from depositing on the outer wall of the heat exchange tube 2 and the inner wall of the shell 1, and improves the overall heat exchange efficiency and self-cleaning capability. Multiple mounting grooves are provided on the outer circumferential surface of the annular turbulent ring 6, and the elastic guide vanes 7 are fixed in the mounting grooves by embedding. The free end of the elastic guide vanes 7 extends to the vicinity of the outer wall of the heat exchange tube 2. This structure allows the elastic guide vanes 7 to generate flow under the action of water. The oscillating motion creates localized pulsed turbulence, effectively disrupting the stagnant boundary layer in the tube bundle gaps, enhancing the scouring and stripping effect on deposits, and improving the shell-side self-cleaning capability. The elastic guide vanes 7 are made of flexible stainless steel or corrosion-resistant elastic alloy sheets, with an arc-shaped structure and a thickness of 0.5-1.5 mm. This structure allows the elastic guide vanes 7 to maintain structural integrity and achieve continuous oscillation even under long-term water flow impact. Their thin-walled arc-shaped design facilitates sensitive flow-induced vibration, enhancing localized turbulent disturbance and effectively preventing fouling from adhering to the outer wall of the heat exchange tubes 2 and the inner wall of the shell 1.

[0018] Working principle: When using this water-cooled condenser with a descaling device, cooling water first enters the interior from the liquid inlet end of the shell 1, flowing through the gaps between multiple parallel heat exchange tubes 2. When the water flow encounters the axially spaced guide plate assemblies 3 on the inner wall of the shell 1, the water flow is circumferentially deflected under the guidance of the arc-shaped guide plate 5 supported by the base 4 in each guide plate assembly 3. Since the guide plate assemblies 3 are staggered in the circumferential direction, the water flow continuously changes its flow direction during axial advancement. Subsequently, the water flow enters the axial region between adjacent guide plate assemblies 3. When the water comes into contact with the annular turbulence protrusions 6 continuously arranged along the circumference of the shell 1, the water flow is forced to bypass its semi-circular protrusion structure to form a local flow around it. At the same time, it impacts the multiple elastic guide vanes 7 located on the outer circumferential surface of the annular turbulence protrusions 6, causing the elastic guide vanes 7 to swing in the mounting groove. The water flow continues to flow forward and re-enters the guiding area formed by the arc-shaped guide vanes 5 of the next set of guide vane assemblies 3, repeating the deflection and swirling process. In this way, it passes through each set of guide vane assemblies 3 and the annular turbulence protrusions 6 in sequence, and finally flows out from the liquid outlet end of the shell 1, thus completing a series of operations.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water-cooled condenser with a descaling device, comprising a shell (1), wherein the shell (1) is provided with a plurality of heat exchange tubes (2) arranged in parallel, characterized in that: Multiple sets of guide vane assemblies (3) are axially spaced on the inner wall of the housing (1). Each set of guide vane assemblies (3) includes multiple bases (4) evenly distributed in the circumferential direction. The bases (4) are fixed to the inner wall of the housing (1) and extend arc-shaped guide vane pieces (5) radially from them. The inner wall of the housing (1) is also provided with an annular turbulence protrusion (6). The annular turbulence protrusion (6) is located in the axial region between adjacent guide vane assemblies (3), and multiple elastic guide vanes (7) are evenly distributed in the circumferential direction on the outer circumferential surface of the annular turbulence protrusion (6).

2. A water-cooled condenser with a descaling device according to claim 1, characterized in that: The base (4) is fixed to the inner wall of the shell (1) by welding or integral molding. Its cross-section is trapezoidal or rectangular, and the top is provided with a slot for installing the arc-shaped guide plate (5).

3. A water-cooled condenser with a descaling device according to claim 1, characterized in that: The radius of curvature of the arc-shaped guide plate (5) is 1 / 3 to 1 / 2 of the inner diameter of the shell (1), and its plate surface is tilted forward along the cooling water flow direction with a tilt angle of 20°-50°.

4. A water-cooled condenser with descaling device as claimed in claim 1 wherein: The annular turbulence protrusion (6) is continuously arranged along the circumference of the shell (1), and its cross-section is a semi-circular structure with a height of 2-5mm.

5. A water-cooled condenser with a descaling device according to claim 1, characterized in that: The outer circumferential surface of the annular turbulence protrusion (6) is provided with multiple mounting grooves, and the elastic guide vane (7) is fixed in the mounting groove by an embedding method.

6. A water cooled condenser with descaling device as claimed in claim 1 wherein: The elastic guide vane (7) is made of flexible stainless steel or corrosion-resistant elastic alloy sheet, has an arc-shaped structure, and a thickness of 0.5-1.5mm.

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