An on-line cleaning device for a condenser

Abstract

The application discloses an online cleaning device for a condenser, which comprises a cleaning pipe coaxially arranged in a copper pipe of the condenser, and a plurality of water spraying openings are uniformly arranged on the outer surface of the cleaning pipe in the radial direction. The online cleaning can be realized, the formation of water scale is destroyed, the pollution to the equipment and the environment is reduced, and the equipment failure rate is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of industrial cleaning technology, and in particular to an online condenser cleaning device. Background Technology

[0002] A condenser is a heat exchanger that condenses steam from a steam turbine into water; it is also called a condenser. Condensers are mainly used in steam turbine power plants and are divided into two types: water-cooled condensers and air-cooled condensers. According to the different steam condensation methods, condensers can be divided into two categories: surface condensers (also called indirect-flow condensers) and mixed condensers (also called contact condensers). In surface condensers, steam separated from the cooling medium is condensed into liquid on the cooling wall surface (usually metal tubes), and the cooling medium can be water or air. Water-cooled surface condensers are further divided into single-pass and double-pass types according to the flow pattern of the cooling water. In mixed condensers, steam is condensed into liquid while mixed with the cooling medium; the condensed steam can be water vapor or the vapor of other substances.

[0003] Poor circulating water quality, slow or uneven water flow rate within the condenser, and varying surface roughness of the internal copper tubes can all lead to scaling in the condenser. This can cause a decrease in the condenser's heat transfer coefficient and vacuum level, severely impacting the unit's economic efficiency and safety performance.

[0004] To address the scaling problem in condensers, cleaning is necessary. Condenser cleaning processes include offline and online cleaning. Existing offline cleaning methods often employ mechanical methods (scraping, brushing), high-pressure rinsing, and chemical cleaning (acid washing). However, these methods are not thorough enough, and the acid can corrode the equipment, creating leaks. Residual acid can cause secondary corrosion or under-deposit corrosion. Furthermore, offline cleaning requires equipment shutdown, severely impacting economic efficiency. Existing online cleaning methods often use rubber ball cleaning and spiral belt cleaning, which also fail to completely remove scale and other deposits. Moreover, the use of rubber balls can clog the copper tubes inside the condenser, further degrading heat exchange efficiency. Therefore, this invention proposes an online condenser cleaning device. Utility Model Content

[0005] This application provides an online condenser cleaning device that enables online cleaning, breaks down scale formation, reduces pollution to equipment and the environment, and significantly lowers equipment failure rates.

[0006] In view of this, this application provides an online condenser cleaning device, comprising: a cleaning pipe coaxially disposed inside the condenser copper tube;

[0007] The outer surface of the cleaning pipe is uniformly provided with multiple water spray nozzles along the radial direction.

[0008] Optionally, the cleaning pipe is connected to a cleaning water pipeline.

[0009] Optionally, it also includes: a cleaning water tank;

[0010] The cleaning water tank is connected to the cleaning pipe via a connecting pipe;

[0011] A water pump is installed on the connecting pipe.

[0012] Optionally, a filter device is also provided on the connecting pipe.

[0013] Optionally, the cleaning tube has a circular cross-section.

[0014] Optionally, the diameter of the cleaning tube is 5-7 mm;

[0015] The diameter of the condenser copper tubes is 18-20 mm.

[0016] Optionally, the diameter of the cleaning tube is 6 mm;

[0017] The diameter of the condenser copper tube is 19 mm.

[0018] Optionally, the cleaning tube is made of stainless steel.

[0019] Optionally, the diameter of the spray nozzle is 0.3-0.5 mm.

[0020] Optionally, the diameter of the spray nozzle is 0.4 mm.

[0021] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: the online condenser cleaning device has a simple structure, low manufacturing cost, and can achieve online cleaning without shutting down the condenser equipment. By using high-pressure water flow to change the laminar flow state of the circulating water into a turbulent flow state inside the condenser copper tubes, the retention and deposition of impurities and calcium carbonate ions in the circulating cooling water are destroyed, thereby ensuring the cleanliness of the inside of the condenser copper tubes. It can effectively reduce the formation of scale in the condenser copper tubes and has no pollution to the equipment and the environment. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the condenser online cleaning device in use in the embodiments of this application;

[0023] Figure 2 This is a longitudinal cross-sectional view of the condenser online cleaning device in use in the embodiments of this application;

[0024] The attached figures are labeled as follows:

[0025] 1-Condenser copper tube, 2-Cleaning pipe, 3-Water spray nozzle. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] This application provides an embodiment of an online condenser cleaning device; please refer to the following for details. Figure 1 and Figure 2 .

[0030] The condenser online cleaning device in this embodiment includes: a cleaning pipe 2 coaxially disposed inside the condenser copper tube 1, and multiple water spray nozzles 3 are evenly provided radially on the outer surface of the cleaning pipe 2.

[0031] It should be noted that this condenser online cleaning device has a simple structure, low manufacturing cost, and can achieve online cleaning without shutting down the condenser equipment. By using high-pressure water flow to change the laminar flow state of the circulating water to a turbulent state inside the condenser copper tube 1, it destroys the retention and deposition of impurities and calcium carbonate ions in the circulating cooling water, thereby ensuring the cleanliness of the inside of the condenser copper tube 1. It can effectively reduce the formation of scale in the condenser copper tube 1 and has no pollution to the equipment and the environment.

[0032] The above is Embodiment 1 of an online condenser cleaning device provided in this application. The following is Embodiment 2 of an online condenser cleaning device provided in this application. Please refer to the following for details. Figure 1 and Figure 2 .

[0033] The condenser online cleaning device in this embodiment includes: a cleaning pipe 2 coaxially disposed inside the condenser copper tube 1, and multiple water spray nozzles 3 are evenly provided radially on the outer surface of the cleaning pipe 2.

[0034] Cleaning pipe 2 can be directly connected to the cleaning water pipeline to provide cleaning water.

[0035] It also includes: a cleaning water tank, which is connected to the cleaning pipe 2 via a connecting pipe, and a water pump is installed on the connecting pipe.

[0036] A filter device can also be installed on the connecting pipe to effectively prevent impurities from entering the cleaning pipe 2.

[0037] Specifically, the cross-section of cleaning tube 2 is circular.

[0038] The diameter of the cleaning pipe 2 is 5-7 mm, and the diameter of the condenser copper pipe 1 is 18-20 mm. Preferably, the diameter of the cleaning pipe 2 is 6 mm, and the diameter of the condenser copper pipe 1 is 19 mm.

[0039] The cleaning tube 2 can be made of stainless steel, which has strong corrosion resistance.

[0040] The orifice diameter of the water nozzle 3 is 0.3-0.5 mm. Preferably, the orifice diameter of the water nozzle 3 is 0.4 mm.

[0041] In practice, the cleaning water from the condenser online cleaning device is sprayed out from nozzle 3. Under the vertical turbulence and diffusion of the high-pressure water jet, it undergoes thermal convection with the condenser copper tube 1, carrying away the heat from the condenser copper tube 1. This creates a low-pressure zone in the jet area (i.e., the area sprayed by nozzle 3), and the circulating cooling water in the boundary area (i.e., the area outside the jet area) is drawn into the jet area, changing its laminar flow state. As the outer part of the jet gradually mixes with the surrounding circulating water, the jet from nozzle 3 gradually shrinks and eventually disappears, resembling a contracting cone. At the same time, the boundary layer of the jet gradually expands in the jet area, causing the jet to form an expanding cone. The stagnant layer on the inner wall of the condenser copper tube 1, replenished with high-velocity cooling water, rapidly exchanges energy and momentum, changing the flow state to turbulence. This disrupts the conditions for the retention and deposition of impurities and calcium carbonate ions in the circulating cooling water, effectively reducing scale formation on the condenser copper tube 1 without polluting the equipment or the environment.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A condenser online cleaning device, characterized in that, include: A cleaning tube coaxially installed inside the condenser copper tubes; The outer surface of the cleaning pipe is uniformly provided with multiple water spray nozzles along the radial direction. By using high-pressure water flow inside the condenser copper tube, the laminar flow state of the circulating water is changed to a turbulent flow state, which breaks the retention and deposition of impurities and calcium carbonate ions in the circulating cooling water, thereby effectively reducing the formation of scale in the condenser copper tube.

2. The condenser online cleaning device according to claim 1, characterized in that, The cleaning pipe is connected to the cleaning water pipeline.

3. The condenser online cleaning device according to claim 1, characterized in that, Also includes: Clean the water tank; The cleaning water tank is connected to the cleaning pipe via a connecting pipe; A water pump is installed on the connecting pipe.

4. The condenser online cleaning device according to claim 3, characterized in that, A filter device is also installed on the connecting pipe.

5. The condenser online cleaning device according to claim 1, characterized in that, The cleaning tube has a circular cross-section.

6. The condenser online cleaning device according to claim 1, characterized in that, The diameter of the cleaning tube is 5-7 mm; The diameter of the condenser copper tubes is 18-20 mm.

7. The condenser online cleaning device according to claim 1, characterized in that, The diameter of the cleaning tube is 6mm; The diameter of the condenser copper tube is 19 mm.

8. The condenser online cleaning device according to claim 1, characterized in that, The cleaning tube is made of stainless steel.

9. The condenser online cleaning device according to claim 1, characterized in that, The nozzle has an orifice diameter of 0.3-0.5 mm.

10. The condenser online cleaning device according to claim 1, characterized in that, The nozzle has an orifice diameter of 0.4 mm.

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