Intelligent control type on-line cleaning type heat exchange device

Abstract

The utility model discloses an intelligent control type on-line cleaning type heat exchange device which comprises a heat exchange unit, an impurity-containing liquid system, a clean medium system, a flushing water system and a control system. The intelligent control type on-line cleaning type heat exchange device provided by the utility model has excellent on-line cleaning and anti-scaling and anti-blocking functions; water is used as a flushing medium, and a specially-designed cleaning scraper structure is combined, so that each heat exchange area is effectively cleaned, and the comprehensive scale removal and blockage removal effects are better; and the integrated skid-mounted design is adopted, so that production, transportation and field installation of the device are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to an intelligent online clean heat exchange device. Background Technology

[0002] Heat exchangers are among the most commonly used process equipment in industrial production, widely applied in industries such as metallurgy, petrochemicals, power, and building materials. Their design and operation greatly promote the efficient operation of production processes. Depending on the type of process medium involved in heat exchange and the specific requirements of the production process, there are many types and forms of heat exchangers, the most common being shell-and-tube, plate, gas-liquid, gas-to-gas, and finned tube types. Through years of engineering practice, mature evaluation standards for heat exchanger quality have been established. Heat exchangers used for clean media typically have a longer service life, lower failure rate, and higher operating efficiency; conversely, heat exchangers used for media containing impurities tend to have a higher failure rate, shorter service life, and lower heat exchange efficiency. The most common problems include scaling and blockage of heat exchange passages, scaling and wear of heat exchange elements leading to leakage, and corrosion of heat exchange elements leading to leakage. For corrosion and leakage issues, upgrading the corrosion resistance of heat exchanger materials is usually sufficient. Regarding scaling, clogging, and wear, some corresponding measures exist for certain process scenarios. For example, heat exchangers used in coal-fired boilers are typically equipped with steam or compressed air soot blowing to prevent scaling caused by dust accumulation in flue gas on the surface of the heat exchanger elements. However, for heat exchange scenarios involving liquid media containing impurities, there are currently no mature and reliable anti-clogging and anti-scaling heat exchanger products. In actual projects, many heat exchangers experience scaling and clogging problems within a short period of operation in such scenarios, leading to numerous and frequent downtimes for maintenance. This not only affects the continuity of production and system heating efficiency but also reduces the project's economic viability. In the field of heat exchange with liquid media containing impurities, scaling has become a core factor restricting the application of heat exchangers. Therefore, it is necessary to propose an intelligent, online, clean heat exchanger device to solve these problems. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an intelligent online cleaning heat exchange device to solve the problem of scale buildup in heat exchangers in scenarios involving liquid media containing impurities.

[0004] This utility model provides an intelligent online cleaning heat exchange device, including: a heat exchange unit, a liquid system containing impurities, a clean medium system, a flushing water system, and a control system;

[0005] The heat exchange unit includes a heat exchanger shell, heat exchange tubes, a cleaning scraper, and a scraper support plate; the impurity-containing liquid system includes an impurity-containing liquid inlet, an impurity-containing liquid pipeline, an impurity-containing liquid inlet header, an impurity-containing liquid outlet header, an impurity-containing liquid outlet, an impurity-containing liquid inlet valve, an impurity-containing liquid outlet valve, and an impurity-containing liquid bypass valve; the impurity-containing liquid inlet is connected to one end of the impurity-containing liquid inlet header via the impurity-containing liquid pipeline, and the other end of the impurity-containing liquid inlet header is connected to the area between the heat exchanger shell and the heat exchange tubes; one end of the impurity-containing liquid outlet header is connected to the area between the heat exchanger shell and the heat exchange tubes; the impurity-containing liquid outlet header... The other end is connected to the impurity liquid outlet via a pipe containing impurities. A section of pipe containing impurities is connected between the impurity liquid inlet and the impurity liquid outlet. An impurity liquid inlet valve is installed on the impurity liquid inlet pipe of the impurity liquid inlet header, and an impurity liquid outlet valve is installed on the impurity liquid outlet pipe of the impurity liquid outlet header. A bypass valve is installed on the impurity liquid pipe directly connecting the impurity liquid inlet and the impurity liquid outlet. A drain outlet is provided at the bottom of the impurity liquid outlet header. The drain outlet is connected to the inlet of a drain valve via a flushing water pipe, and the outlet of the drain valve is connected to the flushing water outlet via a flushing water pipe.

[0006] The clean medium system includes a clean medium inlet, a clean medium pipeline, a clean medium inlet header, a clean medium outlet, and a clean medium outlet header. The clean medium inlet is connected to one end of the clean medium inlet header via the clean medium pipeline, and the other end of the clean medium inlet header is connected to the lower end of the heat exchange tube area. One end of the clean medium outlet header is connected to the upper end of the heat exchange tube area, and the other end of the clean medium outlet header is connected to the clean medium outlet via the clean medium pipeline.

[0007] The flushing water system includes a flushing water inlet, a flushing water pipeline, a booster flushing pump, a flushing water outlet, an upper flushing water manifold, a lower flushing water manifold, flushing valve one, flushing valve two, drain valve one, drain valve two, and drain valve three. The flushing water inlet is connected to the inlet of the booster flushing pump via the flushing water pipeline. The outlet of the booster flushing pump is connected to the inlets of flushing valve one and flushing valve two via flushing water pipelines. The outlet of flushing valve one is connected to one end of the lower flushing water manifold via a flushing water pipeline. The outlet of flushing valve two is connected to the upper flushing water manifold via a flushing water pipeline. One end of the flushing water manifold is connected to the lower end of the area between the heat exchanger shell and the heat exchange tubes, and the other end of the flushing water upper manifold is connected to the upper end of the area between the heat exchanger shell and the heat exchange tubes. The bottom of the flushing water upper manifold is equipped with a drain outlet, which is connected to the third inlet of the drain valve through the flushing water pipe. The third outlet of the drain valve is connected to the flushing water outlet through the flushing water pipe. The bottom of the flushing water lower manifold is equipped with a drain outlet, which is connected to the second inlet of the drain valve through the flushing water pipe. The second outlet of the drain valve is connected to the flushing water outlet through the flushing water pipe.

[0008] The control system includes a control box, which is communicatively connected to various valves in the impurity liquid system and the flushing water system.

[0009] Furthermore, the device also includes a supporting structure, which includes a chassis and a support structure. The heat exchanger shell, the impurity liquid pipeline, the clean medium pipeline, the flushing water pipeline, the booster flushing pump, and the control box are all fixed to the chassis by the support structure, forming an integrated skid-mounted structure.

[0010] Furthermore, the cleaning scraper is provided with a scraper support plate.

[0011] Furthermore, the cleaning scraper is provided with a clearance at the mating boundary between the inner wall of the heat exchanger shell and the heat exchange tube to ensure the installation and up-and-down movement of the cleaning scraper.

[0012] Furthermore, the heat exchanger housing is provided with a remote level gauge for indicating the liquid level between the heat exchanger housing and the heat exchange tube.

[0013] Furthermore, a remote pressure gauge is installed on both the inlet manifold and the outlet manifold for the liquid containing impurities.

[0014] The present invention has the following advantages: The present invention provides an intelligent online cleaning heat exchange device with excellent online cleaning and anti-scaling and anti-clogging functions; using water as the flushing medium and combined with a specially designed cleaning scraper structure, each heat exchange area is effectively cleaned, resulting in better overall descaling and declogging effects; the integrated skid-mounted design facilitates the production, transportation and on-site installation of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the intelligent online cleaning heat exchanger of this utility model;

[0017] Figure 2 This is a right view of the intelligent online cleaning heat exchanger of this utility model;

[0018] Figure 3 This is a left view of the intelligent online cleaning heat exchanger of this utility model;

[0019] Figure 4This is an AA cross-sectional view of the intelligent control online cleaning heat exchanger of this utility model;

[0020] Figure 5 This is a top view of the intelligent online cleaning heat exchanger of this utility model;

[0021] Figure 6 This is a BB cross-sectional view of the intelligent online cleaning heat exchanger of this utility model;

[0022] Figure 7 This is a partial view a of the intelligent online cleaning heat exchanger of this utility model;

[0023] Figure 8 This is a three-dimensional schematic diagram of the intelligent online clean heat exchanger of this utility model. Figure 1 ;

[0024] Figure 9 This is a three-dimensional schematic diagram of the intelligent online clean heat exchanger of this utility model. Figure 2 .

[0025] Diagram Explanation: 1-Heat exchanger shell; 2-Impuric liquid inlet header; 3-Impuric liquid pipeline; 4-Impuric liquid inlet valve; 5-Impuric liquid outlet; 6-Impuric liquid bypass valve; 7-Flush water inlet; 8-Chassis; 9-Clean medium pipeline; 10-Flush water upper header; 11-Flush water pipeline; 12-Clean medium inlet; 13-Control box; 14-Impuric liquid inlet; 15-Booster flushing pump; 16-Clean medium outlet; 17-Flush water outlet; 18-Flush valve one; 19-Flush valve two; 20-Cleaning scraper; 21-Scraper support plate; 22-Drain valve one; 23-Drain valve two; 24-Flush water lower header; 25-Impuric liquid outlet header; 26-Heat exchange tube; 27-Drain valve three; 28-Support structure; 29-Impuric liquid outlet valve; 30-Clean medium outlet header; 31-Clean medium inlet header. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be pointed out that the following detailed description is illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions has been enlarged, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0029] To address the widespread scaling problem in the industry, this invention proposes an intelligent online cleaning heat exchanger. Through specialized design of its structure and process system, and using a specially designed porous cleaning scraper as the basic cleaning component, it fully utilizes the jetting and flushing action of pressurized water and the driving force of pressure energy to achieve uniform and effective cleaning of the heat exchange area. This achieves anti-scaling and anti-clogging effects, fundamentally solving the clogging problem of heat exchangers, effectively improving heat exchange efficiency, extending production line operating time, and thus improving the economic benefits of the project. This provides a new technical solution for the development of high-efficiency heat exchange equipment in this field.

[0030] Please see Figures 1 to 9This utility model provides an intelligent online cleaning heat exchange device, mainly composed of a heat exchange unit, a liquid containing impurities system, a clean medium system, a flushing water system, a control system, and supporting components. The heat exchange unit mainly includes a heat exchanger shell 1, heat exchange tubes 26, a cleaning scraper 20, and a scraper support plate 21. The liquid containing impurities system mainly includes a liquid containing impurities inlet 14, a liquid containing impurities pipe 3, a liquid containing impurities inlet header 2, a liquid containing impurities outlet header 25, a liquid containing impurities outlet 5, a liquid containing impurities inlet valve 4, and a liquid containing impurities outlet valve 29. The system includes: a bypass valve for liquids containing impurities (6); a clean medium system mainly comprising a clean medium inlet (12), a clean medium pipeline (9), a clean medium inlet header (31), a clean medium outlet (16), and a clean medium outlet header (30); a flushing water system mainly comprising a flushing water inlet (7), a flushing water pipeline (11), a booster flushing pump (15), a flushing water outlet (17), an upper flushing water header (10), a lower flushing water header (24), flushing valve one (18), flushing valve two (19), drain valve one (22), drain valve two (23), and drain valve three (27); a control system mainly comprising a control box (13) and corresponding control logic; and supporting structures mainly comprising a chassis (8) and a support structure (28).

[0031] The impurity liquid inlet 14 is connected to one end of the impurity liquid inlet header 2 via the impurity liquid pipe 3. The other end of the impurity liquid inlet header 2 is connected to the area between the heat exchanger shell 1 and the heat exchange tube 26. One end of the impurity liquid outlet header 25 is connected to the area between the heat exchanger shell 1 and the heat exchange tube 26. The other end of the impurity liquid outlet header 25 is connected to the impurity liquid outlet 5 via the impurity liquid pipe 3. A section of impurity liquid pipe 3 connects the impurity liquid inlet 14 and the impurity liquid outlet 5. The impurity liquid inlet manifold 2 is equipped with an impurity liquid inlet valve 4 on the inlet impurity liquid pipeline 3, and the impurity liquid outlet manifold 25 is equipped with an impurity liquid outlet valve 29 on the outlet impurity liquid pipeline 3. The impurity liquid bypass valve 6 is equipped on the impurity liquid pipeline 3 that directly connects the impurity liquid inlet 14 and the impurity liquid outlet 5. The bottom of the impurity liquid outlet manifold 25 is equipped with a drain outlet, which is connected to the inlet of drain valve 22 through a flushing water pipeline. The outlet of drain valve 22 is connected to the flushing water outlet 17 through a flushing water pipeline 11.

[0032] The clean medium inlet 12 is connected to one end of the clean medium inlet header 31 via the clean medium pipeline 9. The other end of the clean medium inlet header 31 is connected to the lower end of the inner region of the heat exchange tube 26. One end of the clean medium outlet header 30 is connected to the upper end of the inner region of the heat exchange tube 26. The other end of the clean medium outlet header 30 is connected to the clean medium outlet 16 via the clean medium pipeline 9.

[0033] The flushing water inlet 7 is connected to the inlet of the booster flushing pump 15 via the flushing water pipe 11. The outlet of the booster flushing pump 15 is connected to the inlet of flushing valve 18 and the inlet of flushing valve 29 via the flushing water pipe 11. The outlet of flushing valve 18 is connected to one end of the lower flushing water header 24 via the flushing water pipe 11. The outlet of flushing valve 29 is connected to one end of the upper flushing water header 10 via the flushing water pipe 11. The other end of the lower flushing water header 24 is connected to the lower end of the area between the heat exchanger shell 1 and the heat exchange tube 26. The other end of the flushing water upper header 10 is connected to the upper end of the area between the heat exchanger shell 1 and the heat exchange tube 26. The bottom of the flushing water upper header 10 is provided with a drain port, which is connected to the inlet of the drain valve 27 through the flushing water pipe 11. The outlet of the drain valve 27 is connected to the flushing water outlet 17 through the flushing water pipe 11. The bottom of the flushing water lower header 24 is provided with a drain port, which is connected to the inlet of the drain valve 23 through the flushing water pipe 11. The outlet of the drain valve 23 is connected to the flushing water outlet 17 through the flushing water pipe 11.

[0034] The heat exchanger shell 1, the impurity liquid pipeline 3, the clean medium pipeline 9, the flushing water pipeline 11, the booster flushing pump 15, and the control box 13 are all fixed to the chassis 8 by the support structure 28, forming an integrated skid-mounted structure, which facilitates the production, assembly, transportation, and on-site installation of the equipment.

[0035] Preferably, the cleaning scraper 20 is provided with a scraper support plate 21. The scraper support plate 21 serves two purposes: firstly, it enhances the strength of the cleaning scraper 20 and prevents deformation and jamming of the heat exchange tubes during vertical movement; secondly, the scraper support plate 21 is provided with a certain height to ensure that when the cleaning scraper 20 is at its upper or lower limit position, the rinsing water entering the heat exchanger can only push the cleaning scraper to move from one side, thus avoiding the problem of the cleaning scraper 20 being unable to move.

[0036] Preferably, the cleaning scraper 20 is provided with appropriate spacing at the mating boundary between the inner wall of the heat exchanger shell 1 and the heat exchange tube 26, so as to ensure the clearance required for the installation and up-and-down movement of the cleaning scraper 20, and to ensure that the cleaning scraper 20 forms an effective scraping and cleaning effect on the inner wall of the heat exchanger shell 1 and the outer wall of the heat exchange tube 26.

[0037] Preferably, a remote level gauge is provided on the heat exchanger shell 1 to indicate the liquid level between the heat exchanger shell 1 and the heat exchange tube 26, so as to facilitate the operation and control of the device.

[0038] Preferably, a remote pressure gauge is installed on both the inlet manifold 2 and the outlet manifold 25 for the liquid containing impurities. The differential pressure data is used to determine the scaling condition on the inner wall of the heat exchanger shell 1 and the outer wall of the heat exchange tube 26, which serves as the basis for starting the flushing operation.

[0039] The working principle of the intelligent online clean heat exchanger provided in this embodiment of the utility model is as follows: the liquid containing impurities enters the liquid containing impurities pipeline 3 through the liquid containing impurities inlet 14, and enters the area between the heat exchange tube 26 and the heat exchanger shell 1 through the liquid containing impurities inlet header 2. It exchanges heat with the clean medium in the heat exchange tube 26 through the heat exchange tube wall. The liquid containing impurities that has completed the heat exchange process is discharged from the liquid containing impurities outlet 5 through the liquid containing impurities outlet header 25 and the liquid containing impurities pipeline 3.

[0040] The clean medium enters the heat exchange tube 26 through the clean medium inlet 12 and the clean medium pipeline 9. The clean medium undergoes heat exchange with the liquid medium containing impurities through the heat exchange tube wall. After the heat exchange is completed, the clean medium is discharged from the clean medium outlet 16 through the clean medium pipeline 9.

[0041] The flushing water enters the booster flushing pump 15 through the flushing water inlet 7 and the flushing water pipe 11. The flushing water discharged from the booster flushing pump 15 enters the upper flushing water header 10 and the lower flushing water header 24 through the flushing water pipe 11. The flushing water enters the area enclosed by the heat exchanger shell 1, the cleaning scraper 20 and the heat exchange tube 26 through one side header. Driven by the flushing water pressure, the cleaning scraper 20 moves up and down along the length of the heat exchange tube 26, forming a scraping action on the outer wall of the heat exchange tube 26 and the inner wall of the heat exchanger shell 1. At the same time, high-pressure water is sprayed out at high speed through multiple holes designed on the cleaning scraper 20, forming a hydraulic flushing cleaning action on the outer wall of the heat exchange tube 26 and the inner wall of the heat exchanger shell 1. The combined effect of cleaning the outer wall of the heat exchange tube 26 and the inner wall of the heat exchanger shell 1 is achieved. The flushing water containing impurities is discharged from the flushing water outlet 17 through the flushing water pipe 11 through the other side flushing water header, thereby achieving the goal of online cleaning of the heat exchanger.

[0042] In normal operation mode, the impurity liquid inlet valve 4 and the impurity liquid outlet valve 29 are open, while the impurity liquid bypass valve 6 is closed. When the operating resistance on the impurity liquid side reaches the flushing threshold or after a certain operating cycle, the system switches to flushing mode. This involves opening the impurity liquid bypass valve 6, closing the impurity liquid inlet valve 4 and the impurity liquid outlet valve 29, and opening the drain valve 22. The impurity liquid in the heat exchanger is then discharged through the drain valve 22 and flushing water outlet 17 to the designated area until the liquid level displays the lowest level. At this point, the drain valve 22 is closed, and the flushing operation begins. After flushing is complete, the impurity liquid inlet valve 4 is opened. When the liquid level displays the highest level, the impurity liquid outlet valve 29 is opened, and the impurity liquid bypass valve 6 is closed, completing the switch to normal operation mode.

[0043] The flushing operation steps are as follows: First, turn on the booster flushing pump 15, flushing valve 2 19, and drain valve 3 27. The flushing water enters the heat exchanger from the bottom, pushing the cleaning scraper 20 upward. Wastewater is discharged from the top of the heat exchanger through the flushing water pipe 11 and drain valve 3 27 through the flushing water outlet 17 until the liquid level display shows the highest liquid level. Then, close flushing valve 2 19 and drain valve 3 27, and open flushing valve 1 18 and drain valve 2 23. The flushing water enters the heat exchanger from the top, pushing the cleaning scraper... As the plate 20 moves downward, the wastewater containing the wastewater is discharged from the bottom of the heat exchanger through the flushing water pipe 11 and the drain valve 23 through the flushing water outlet 17 until the cleaning scraper 20 reaches the bottom of the heat exchanger. At this point, the booster flushing pump 15 and the flushing valve 18 are shut off, and the drain valve 22 is opened to drain the flushing water in the heat exchanger through the flushing water pipe 11 and the drain valve 22 through the flushing water outlet 17 until the liquid level display shows the lowest liquid level. Then, the drain valve 23 and the drain valve 22 are closed, thus completing the flushing process of the heat exchange device.

[0044] As can be seen from the above embodiments, the intelligent online cleaning heat exchanger provided by this utility model adopts online high-pressure water cleaning technology to achieve the anti-clogging function of the heat exchanger, and is suitable for heat exchange processes containing liquids containing impurities; driven by pressurized water, the cleaning scraper with a porous structure reciprocates up and down, achieving the effective cleaning target of scale on the outer wall of the heat exchange tube and the inner wall of the heat exchanger shell, fundamentally solving the problem of scale and blockage of the heat exchanger; making full use of the jet flushing and pressure energy driving effect of pressurized water, a uniform and consistent cleaning effect is achieved in all heat exchange areas, solving the problem of local areas being unable to be cleaned due to space and location limitations; adopting an integrated skid-mounted structure design, it is convenient for the production, assembly, transportation and on-site installation of the equipment.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in sequences other than those illustrated or described herein.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A smart-controlled online clean heat exchanger, characterized in that, include: Heat exchange unit, impurity liquid system, clean medium system, flushing water system, and control system; The heat exchange unit includes a heat exchanger shell (1), heat exchange tubes (26), a cleaning scraper (20), and a scraper support plate (21); The impurity-containing liquid system includes an impurity-containing liquid inlet (14), an impurity-containing liquid pipeline (3), an impurity-containing liquid inlet header (2), an impurity-containing liquid outlet header (25), an impurity-containing liquid outlet (5), an impurity-containing liquid inlet valve (4), an impurity-containing liquid outlet valve (29), and an impurity-containing liquid bypass valve (6). The impurity-containing liquid inlet (14) is connected to one end of the impurity-containing liquid inlet header (2) via the impurity-containing liquid pipeline (3), and the other end of the impurity-containing liquid inlet header (2) is connected to the area between the heat exchanger shell (1) and the heat exchange tube (26). One end of the impurity-containing liquid outlet header (25) is connected to the area between the heat exchanger shell (1) and the heat exchange tube (26), and the other end of the impurity-containing liquid outlet header (25) is connected to the impurity-containing liquid inlet (5) via the impurity-containing liquid pipeline (3). The impurity liquid outlet (5) is connected, and a section of impurity liquid pipeline (3) is provided between the impurity liquid inlet (14) and the impurity liquid outlet (5). The impurity liquid inlet valve (4) is provided on the impurity liquid pipeline (3) at the inlet of the impurity liquid inlet header (2), and the impurity liquid outlet valve (29) is provided on the impurity liquid outlet pipeline (3) at the outlet of the impurity liquid outlet header (25). The impurity liquid bypass valve (6) is provided on the impurity liquid pipeline (3) directly connected between the impurity liquid inlet (14) and the impurity liquid outlet (5). The bottom of the impurity liquid outlet header (25) is provided with a drain outlet, which is connected to the inlet of the drain valve (22) through a flushing water pipeline. The outlet of the drain valve (22) is connected to the flushing water outlet (17) through a flushing water pipeline (11). The clean medium system includes a clean medium inlet (12), a clean medium pipeline (9), a clean medium inlet header (31), a clean medium outlet (16), and a clean medium outlet header (30); the clean medium inlet (12) is connected to one end of the clean medium inlet header (31) through the clean medium pipeline (9), the other end of the clean medium inlet header (31) is connected to the lower end of the inner region of the heat exchange tube (26), one end of the clean medium outlet header (30) is connected to the upper end of the inner region of the heat exchange tube (26), and the other end of the clean medium outlet header (30) is connected to the clean medium outlet (16) through the clean medium pipeline (9); The flushing water system includes a flushing water inlet (7), a flushing water pipe (11), a booster flushing pump (15), a flushing water outlet (17), an upper flushing water manifold (10), a lower flushing water manifold (24), flushing valve one (18), flushing valve two (19), drain valve one (22), drain valve two (23), and drain valve three (27). The flushing water inlet (7) is connected to the inlet of the booster flushing pump (15) through the flushing water pipe (11). The outlet of the booster flushing pump (15) is connected to the inlet of flushing valve one (18) and the inlet of flushing valve two (19) through the flushing water pipe (11). The outlet of flushing valve one (18) is connected to one end of the lower flushing water manifold (24) through the flushing water pipe (11). The outlet of flushing valve two (19) is connected to the inlet of the lower flushing water manifold (24) through the flushing water pipe (15). 1) One end of the flushing water upper header (10) is connected to the lower end of the area between the heat exchanger shell (1) and the heat exchange tube (26), and the other end of the flushing water lower header (24) is connected to the upper end of the area between the heat exchanger shell (1) and the heat exchange tube (26). The flushing water upper header (10) is provided with a drain port at the bottom. The drain port is connected to the inlet of the drain valve three (27) through the flushing water pipe (11). The outlet of the drain valve three (27) is connected to the flushing water outlet (17) through the flushing water pipe (11). The flushing water lower header (24) is provided with a drain port at the bottom. The drain port is connected to the inlet of the drain valve two (23) through the flushing water pipe (11). The outlet of the drain valve two (23) is connected to the flushing water outlet (17) through the flushing water pipe (11). The control system includes a control box (13), which is communicatively connected to various valves in the impurity liquid system and the flushing water system.

2. The intelligent online clean heat exchanger as described in claim 1, characterized in that, It also includes a supporting structure, which includes a chassis (8) and a supporting structure (28); the heat exchanger shell (1), the impurity liquid pipeline (3), the clean medium pipeline (9), the flushing water pipeline (11), the booster flushing pump (15) and the control box (13) are all fixed on the chassis (8) by the supporting structure (28), forming an integrated skid-mounted structure.

3. The intelligent online clean heat exchanger as described in claim 1, characterized in that, The cleaning scraper (20) is provided with a scraper support plate (21).

4. The intelligent online clean heat exchanger as described in claim 1, characterized in that, The cleaning scraper (20) is provided with a clearance between the inner wall of the heat exchanger shell (1) and the heat exchange tube (26) to ensure the installation and up-and-down movement of the cleaning scraper (20).

5. The intelligent online clean heat exchanger as described in claim 1, characterized in that, The heat exchanger housing (1) is provided with a remote level gauge for indicating the liquid level between the heat exchanger housing (1) and the heat exchange tube (26).

6. The intelligent online clean heat exchanger as described in claim 1, characterized in that, Each of the impurity liquid inlet manifold (2) and the impurity liquid outlet manifold (25) is equipped with a remote pressure gauge.

Images