Online self-cleaning device of condenser

Abstract

The online self-cleaning device comprises a barrel, a water inlet pipe, a water outlet pipe, a cleaning pipe, a filter box and a control valve. A heat exchange pipe is arranged in the barrel, the water inlet pipe is communicated with a water inlet cavity at the lower part of the barrel, the water outlet pipe is communicated with a water outlet cavity at the upper part, and the cleaning pipe is communicated with the water inlet pipe and is provided with a control valve for realizing back flushing; the filter cartridge is mounted on the water supply pipe, a filter cartridge is arranged in the filter cartridge, filter holes are uniformly distributed in the outer side of the filter cartridge, and filtered solid impurities can settle to the lower part of the filter cartridge and are discharged through a blow-off pipe. According to the device, on-line cleaning of the condenser heat exchange tube can be achieved in a non-stop state, the cleaning efficiency is effectively improved, and the maintenance stop time is shortened; meanwhile, solid impurities in the cooling water are effectively filtered, the heat exchange pipes are prevented from being blocked, and the operation stability and heat exchange efficiency of the system are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of condensers, and in particular relates to an online self-cleaning device for a condenser. Background Art

[0002] Condensers are widely used in industrial systems such as thermal power generation, nuclear power generation, and petrochemicals. They condense steam discharged from steam turbines into water, thereby achieving heat recovery and closed-loop system circulation. During condenser operation, the heat exchange tubes are typically cooled by circulating cooling water. However, since cooling water inevitably contains suspended impurities, algae, organic matter, and microorganisms, these impurities tend to accumulate at the tube ends or within the tube walls over time, resulting in reduced heat exchange efficiency, poor condensation performance, and even equipment corrosion and operational failures.

[0003] Current condenser cleaning methods often rely on offline manual or chemical cleaning. This process often requires shutting down the system, disassembling the heat exchange tubes, or injecting chemical cleaning fluids. These methods are not only inefficient and complex, but also result in prolonged equipment downtime, impacting the continuous operation of the plant or power station. They also pose safety and environmental risks. Even some systems equipped with online ball cleaning systems still fail to effectively remove solid particulate contaminants, and pipe blockage remains a persistent problem.

[0004] Furthermore, if the cooling water isn't effectively pre-filtered before entering the condenser, mud, leaves, and other solid impurities carried in the water can easily accumulate at the heat exchange tube inlet, causing localized blockage and further reducing heat exchange efficiency. Existing filtration devices generally have simple structures, making it difficult to achieve targeted collection and convenient removal of impurities. This leads to long maintenance cycles and low cleaning efficiency, hindering stable equipment operation. Summary of the Invention

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a condenser online self-cleaning device, which can be implemented online without shutting down the machine, and can take into account the functions of heat exchange tube cleaning and cooling water filtration at the same time, so as to improve heat exchange efficiency, reduce maintenance costs and ensure stable operation of the equipment.

[0006] To achieve the above object, the present invention provides the following technical solutions: A condenser online self-cleaning device includes a cylinder, water baffles are fixed on the inner sides of the front and rear end ports of the cylinder, the front and rear water baffles are connected by a plurality of heat exchange tubes, two semicircular end covers are fixed at the front and rear end ports of the cylinder, and the chamber in the front end port of the cylinder is divided into two left and right areas by a first vertical partition plate, and the left and right areas are divided into an upper water outlet chamber and a lower water inlet chamber by a middle partition plate, water outlet pipes connected to the left and right water outlet chambers are fixed on the left and right sides of the cylinder, and two water inlet pipes connected to the left and right water inlet chambers are fixed on the lower side of the cylinder, and the chamber in the rear end port of the cylinder is divided into two left and right return water chambers by a second vertical partition plate; A cleaning pipe is fixed on one side of the water inlet pipe, and a first control valve is fixed near the lower end of the water inlet pipe, and a second control valve is fixed on the cleaning pipe.

[0007] Furthermore, the lower end of the water inlet pipe is connected to a water supply pipe, and a filter box is installed on the water supply pipe.

[0008] Furthermore, the upper end of the filter box is opened, and an openable cover is fixed to the filter box at the opening, and a filter cartridge is detachably mounted on the inner side of the filter box at the water outlet.

[0009] Furthermore, the lower portion of the filter box is provided with an arc shape, and a sewage pipe is fixed near the lower position of one end of the filter box, and a sewage valve is installed on the sewage pipe.

[0010] Furthermore, one end of the filter cartridge opening is covered at the water outlet, and a clamping edge extending outward is fixed to the edge of the filter cartridge opening, and evenly arranged filter holes are provided on the outer surface of the filter cartridge.

[0011] Furthermore, a U-shaped holder is fixed on the inner side of the filter box at the water outlet, and a slot is provided on the inner side of the holder.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a cleaning pipe on one side of the water inlet pipe, and installs a first control valve and a second control valve on the water inlet pipe and the cleaning pipe respectively. When it is necessary to clean the heat exchange tubes inside the condenser, the first control valve of the water inlet pipe can be closed, and the second control valve on the cleaning pipe can be opened. The outlet water of the condenser is used for reverse flushing, so that pollutants such as scale, mud, algae attached to the pipe openings and inner walls of the heat exchange tubes can be efficiently flushed and discharged, avoiding the problems of traditional condensers requiring shutdown for cleaning, low cleaning efficiency and cumbersome operation, and realizing online self-cleaning without shutting down, thereby improving heat exchange efficiency, extending the continuous operation time of the equipment and reducing maintenance costs.

[0013] The present invention arranges a filter box on the water supply pipe, installs a filter cartridge inside the filter box, and the filter cartridge cover is arranged at the water outlet of the filter box and is provided with evenly distributed filter holes. This can effectively block solid suspended matter, leaves and particulate matter in the cooling water from entering the condenser, and avoid impurities entering the heat exchange tubes and causing blockage problems, thereby ensuring smooth operation of the heat exchange tubes and improving heat exchange efficiency. At the same time, the structure of the filter cartridge is detachable for easy replacement, which improves the convenience of maintenance and the operability of the system.

[0014] The present invention configures the lower side of the filter box into an arc-shaped structure and arranges a drain pipe and a drain valve at a low position thereof. The filtered impurities are concentrated at the bottom of the filter box by utilizing the principle of water gravity sedimentation. The deposited impurities can be quickly and directionally discharged by opening the drain valve, thereby effectively improving the impurity discharge efficiency and avoiding frequent disassembly of the device for cleaning operations. This solves the problems of difficult drainage and high cleaning frequency of the filter structure in the prior art, and enhances the continuity and reliability of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the inner structure of the front port of the cylinder of the present invention; Figure 3 This is a schematic diagram of the inner structure of the rear port of the cylinder of the present invention; Figure 4 is a schematic diagram of the filter box of the present invention; Figure 5 It is a schematic diagram of the filter cartridge of the present invention; Figure 6 It is a schematic diagram of the card seat of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Water supply pipe; 2. Filter box; 21. Cover plate; 22. Drain pipe; 23. Drain valve; 24. Filter cartridge; 241. Filter hole; 242. Card edge; 25. Card seat; 251. Card slot; 3. End cover; 4. Water outlet pipe; 5. Cylinder body; 51. Water outlet chamber; 52. Partition plate; 53. First vertical partition plate; 54. Water inlet chamber; 55. Second vertical partition plate; 56. Return water chamber; 57. Water baffle; 58. Heat exchange tube; 6. Water inlet pipe; 61. First control valve; 62. Cleaning pipe; 63. Second control valve. DETAILED DESCRIPTION

[0017] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0018] like Figure 1 、 Figure 2 and Figure 3 As shown, a condenser online self-cleaning device includes a cylinder 5; the cylinder 5 is set to a hollow structure for accommodating heat exchange components and forming a cooling channel; water baffles 57 are fixed on the inner sides of the front and rear end ports of the cylinder 5; the water baffles 57 are set to a disc-shaped structure for guiding and isolating the flow direction of cooling water to prevent water flow from being turbulent at the port; the front and rear water baffles 57 are connected by multiple heat exchange tubes 58; the heat exchange tubes 58 are evenly arranged and extend along the water flow direction, and the two ends of the heat exchange tubes 58 are sealed with the water baffles 57 to achieve heat exchange between cooling water and steam; two semicircular end covers 3 are fixed at the front and rear end ports of the cylinder 5; the semicircular end covers 3 are used to close the ends of the cylinder 5 and form independent chambers, and are also convenient for later disassembly and maintenance; the chamber in the front port of the cylinder 5 is divided into two left and right areas by the first vertical partition 53; the first vertical partition 53 is set vertically The plate-like structure is arranged at the central axis position inside the cylinder 5; the left and right areas are divided into the upper water outlet chamber 51 and the lower water inlet chamber 54 by the middle partition plate 52; the partition plate 52 is a horizontally arranged plate body, which clearly separates the upper and lower waterway functional areas to ensure the flow direction control of cooling water during the heat exchange process; the left and right sides of the cylinder 5 are fixed with water outlet pipes 4 connected to the left and right water outlet chambers 51; the water outlet pipes 4 are straight tube structures, which pass through the water outlet chamber 51 and guide the cooling water to flow out of the cylinder 5; two water inlet pipes 6 are fixed on the lower side of the cylinder 5, which are respectively connected to the left and right water inlet chambers 54; the water inlet pipes 6 are symmetrically arranged and used to transport cooling water to the water inlet chamber 54; the chamber in the rear port of the cylinder 5 is divided into left and right return water chambers 56 by a second vertical partition plate 55; the second vertical partition plate 55 has the same structural form as the first vertical partition plate 53, and is also used to limit the left and right waterways to realize the control of the return water flow path.

[0019] A cleaning pipe 62 is fixed on one side of the water inlet pipe 6; the cleaning pipe 62 is a guide pipe connected to the cleaning passage, which is used to realize the reverse cleaning function; and a first control valve 61 is fixed near the lower end of the water inlet pipe 6; the first control valve 61 is a manual or electric switch valve, which is used to control the on-off state of the cooling water during normal water supply; a second control valve 63 is fixed on the cleaning pipe 62; the second control valve 63 is used to open during the reverse flushing process, and use the outlet water of the condenser to flow back into the cleaning pipe 62 to realize the flushing and removal of pollutants attached to the inner cavity and pipe mouth of the heat exchange tube 58, thereby enhancing the cleaning efficiency and reducing the maintenance interruption time during operation.

[0020] like Figure 1As shown, the lower end of the water inlet pipe 6 is connected to the water supply pipe 1; the water supply pipe 1 is the main water supply channel for introducing cooling water from the external water supply system, and passes through the filter system and the condenser body; a filter box 2 is installed on the water supply pipe 1; the filter box 2 is used to pre-filter the incoming cooling water to prevent large particles of impurities from entering the heat exchange tube 58 with the water flow and causing blockage.

[0021] like Figure 4 As shown, the upper end of the filter box 2 is opened; the opening is used to facilitate cleaning and maintenance of internal components; and the filter box 2 is fixed with an openable cover 21 at the opening; the cover 21 is provided with a hinge mechanism and a locking structure, which is convenient for opening when the filter cartridge 24 needs to be replaced or the deposited impurities need to be cleaned; the filter cartridge 24 is detachably installed at the water outlet on the inner side of the filter box 2; the filter cartridge 24 is provided at the water outlet to intercept and filter suspended particles, leaves and other solid impurities entrained in the water flow to ensure that the cooling water entering the condenser system is clean.

[0022] like Figure 4 As shown, the lower part of the filter box 2 is provided with an arc shape; this structure is used to collect solid impurities that settle by gravity and make them concentrate and deposit at the lowest point of the bottom of the filter box 2; and a drain pipe 22 is fixed to one end of the filter box 2 near the lower side; the drain pipe 22 is provided with a vertical connection structure, and its lower end is connected to the drain channel to facilitate the discharge of waste; a drain valve 23 is installed on the drain pipe 22; the drain valve 23 is a knob type or ball valve structure, which is used to manually or automatically discharge the filter residue regularly, thereby ensuring that the filtration system maintains a smooth operation state for a long time.

[0023] like Figure 5 As shown, one end of the opening of the filter cartridge 24 is covered at the water outlet; the setting position of the filter cartridge 24 ensures that the water flow must pass through its interior, and the filtering effect is more thorough; and the edge of the opening of the filter cartridge 24 is fixed with a clamping edge 242 extending outward; the clamping edge 242 is used to form a clamping fit with the inner wall of the filter box 2 to prevent the filter cartridge 24 from loosening or shifting under the impact of water flow; the outer surface of the filter cartridge 24 is provided with evenly arranged filter holes 241; the filter holes 241 have a uniform diameter and are distributed in a regular array along the outer shell of the filter cartridge 24 to prevent solid particles of different particle sizes from entering the main cooling water path.

[0024] like Figure 6 As shown, a U-shaped holder 25 is fixed on the inner side of the filter box 2 at the water outlet; the holder 25 is a positioning structure for installing the filter cartridge 24; the holder 25 is arranged on the inner wall of the filter box 2 near the water outlet, and adopts a U-shaped surrounding structure to enhance the supporting force; a slot 251 is provided on the inner side of the holder 25; the slot 251 is used to engage with the card edge 242 on the filter cartridge 24 to achieve a stable installation of the filter cartridge 24 and prevent displacement due to vibration during operation.

[0025] The working principle of the present invention is as follows: when cleaning the water inlet of the heat exchange tube 58 in the condenser, the first control valve 61 on the water inlet pipe 6 on one side is closed, and then the second control valve 63 on the cleaning pipe 62 is opened. The condenser outlet water is used to reversely run to reversely flush the heat exchange tube 58, and the contaminants at the pipe opening and inside the heat exchange tube 58 are discharged through the cleaning pipe 62, thereby completing the cleaning process of the heat exchange tube 58 of the condenser. The cleaning is efficient and convenient and does not affect the normal operation of the condenser. When supplying cold water to the condenser, the cold water at the water supply pipe 1 is filtered through the filter cartridge 24 in the filter box 2, thereby effectively reducing the solid impurities in the cooling water from entering the condenser, and the solid impurities filtered by the filter cartridge 24 fall on the arc-shaped structure on the lower side of the filter box 2. At this time, the drain valve 23 is opened to discharge the filtered solid impurities to the outside through the drain pipe 22.

[0026] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A condenser online self-cleaning device, comprising a cylinder (5), characterized in that: Water baffles (57) are fixed on the inner sides of the front and rear end ports of the cylinder (5), and the front and rear water baffles (57) are connected by a plurality of heat exchange tubes (58). Two semicircular end covers (3) are fixed at the front and rear end ports of the cylinder (5), and the chamber in the front end port of the cylinder (5) is divided into two left and right areas by a first vertical partition plate (53), and the two left and right areas are divided into an upper water outlet chamber (51) and a lower water inlet chamber (54) by a middle partition plate (52). Water outlet pipes (4) connected to the left and right water outlet chambers (51) are fixed on the left and right sides of the cylinder (5), and two water inlet pipes (6) connected to the left and right water inlet chambers (54) are fixed on the lower side of the cylinder (5). The chamber in the rear end port of the cylinder (5) is divided into two left and right return water chambers (56) by a second vertical partition plate (55); A cleaning pipe (62) is fixed to one side of the water inlet pipe (6), and a first control valve (61) is fixed near the lower end of the water inlet pipe (6), and a second control valve (63) is fixed to the cleaning pipe (62).

2. The condenser online self-cleaning device according to claim 1, characterized in that: The lower end of the water inlet pipe (6) is connected to a water supply pipe (1), and a filter box (2) is installed on the water supply pipe (1).

3. The condenser online self-cleaning device according to claim 2, characterized in that: The upper end of the filter box (2) is provided with an opening, and an openable cover plate (21) is fixed to the filter box (2) at the opening. A filter cartridge (24) is detachably mounted on the inner side of the filter box (2) at the water outlet.

4. The condenser online self-cleaning device according to claim 3, characterized in that: The lower portion of the filter box (2) is provided with an arc shape, and a sewage pipe (22) is fixed to one end of the filter box (2) near the lower portion, and a sewage valve (23) is installed on the sewage pipe (22).

5. The condenser online self-cleaning device according to claim 3, characterized in that: One end of the opening of the filter cartridge (24) is covered at the water outlet, and a clamping edge (242) extending outward is fixed to the edge of the opening of the filter cartridge (24), and evenly arranged filter holes (241) are provided on the outer surface of the filter cartridge (24).

6. The condenser online self-cleaning device according to claim 5, characterized in that: A U-shaped holder (25) is fixed on the inner side of the filter box (2) at the water outlet, and a slot (251) is provided on the inner side of the holder (25).

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