A cleaning device for condensing pipes of a steam turbine condenser of a thermal power plant

Abstract

The application discloses a kind of cleaning device of steam turbine condenser condensing pipe of thermal power plant, including condenser, condensing pipe and for the cleaning device of inside condensing pipe is cleaned, condenser bottom is equipped with support leg, condensing pipe is evenly distributed in the inside condenser, cleaning device includes main pipe, flushing component and flushing component, flushing component and flushing component are located on main pipe, flushing component is located flushing component side, the inside condensing pipe is cleaned by flushing-flushing-flushing sequence in the application, the inside wall of condensing pipe is preliminarily cleaned by flushing spray head, the condensing pipe is cleaned by roller brush located at the rear end of flushing spray head, the condensing pipe after cleaning is cleaned again by flushing flange plate located at the rear end of roller brush, and the sequence of flushing-flushing-flushing is good, and the efficiency is high.

Description

Technical Field

[0001] This invention mainly relates to the technical field of thermal power plants, specifically a cleaning device for the condenser tubes of a steam turbine in a thermal power plant. Background Technology

[0002] A thermal power plant, or thermal power plant for short, is a factory that uses coal, oil, or natural gas as fuel to produce electricity. Its basic production process is as follows: fuel is burned in a boiler to heat water to make steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the turbine to rotate, converting the heat energy into mechanical energy. Then the turbine drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] These power plants generate electricity by utilizing the pressure drop during the process of converting high-temperature, high-pressure steam or gas into low-pressure air or condensate through a turbine. However, during long-term power generation, the condenser tubes in the turbine condenser tend to accumulate a large amount of dirt, which reduces the condensation effect and requires regular cleaning. If the condenser tube core is not cleaned, blockages will occur over time, requiring tube replacement and thus increasing equipment costs.

[0004] In existing technologies, when cleaning the condenser tubes in a steam turbine condenser, high-pressure water guns are typically used directly. However, when using high-pressure water guns, the water is directly introduced into the condenser tubes. Because the inner diameter of the condenser tubes is small, the high-pressure water gun is close to the inner wall of the condenser tubes, so it can only rinse forward and cannot clean the inner wall. Therefore, using only high-pressure water guns cannot effectively clean the inner wall of the condenser tubes, which can easily lead to incomplete cleaning and low work efficiency. Summary of the Invention

[0005] This invention provides a cleaning device for the condenser tubes of a steam turbine in a thermal power plant, in order to solve the technical problems mentioned in the background section.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A cleaning device for condenser tubes of a steam turbine in a thermal power plant includes a condenser, condenser tubes, and a cleaning device for cleaning the inside of the condenser tubes. The condenser has a support leg at its bottom, and the condenser tubes are evenly distributed inside the condenser. The cleaning device includes a main pipe, a flushing assembly, and a rinsing assembly. The flushing assembly and the rinsing assembly are both located on the main pipe, and the flushing assembly is located on one side of the rinsing assembly.

[0008] Preferably, a flushing gun is provided at one end of the main pipe, and the flushing gun is connected to the main pipe at one end. The flushing gun is provided with a flushing pressing handle, and a flushing positioning component is provided on the flushing pressing handle. A drive component is connected to the end of the main pipe away from the inner wall of the flushing gun.

[0009] Preferably, the rinsing assembly includes a cleaning roller and a rinsing flange, and a roller brush is provided on the outer circumferential wall of the cleaning roller.

[0010] Preferably, the drive assembly includes a drive motor, which is connected to the end of the main pipe away from the flushing gun, and one end of the drive motor is connected to one end of the cleaning roller via a coupling.

[0011] Preferably, the rinsing assembly includes a rinsing nozzle, one end of which is connected to the end of the cleaning roller away from the drive motor, and the nozzle openings inside the rinsing nozzle are divergent nozzles.

[0012] Preferably, the main tube is fitted with a sleeve, and sliding blocks are provided on the inner walls of both sides of the sleeve near the end of the flushing gun. Sliding grooves corresponding to the sliding blocks are provided on the outer walls of both sides of the main tube, and the sliding blocks slide inside the sliding grooves.

[0013] Preferably, the end of the sleeve away from the flushing gun is connected to the flushing flange, the flushing flange is located on the side of the roller brush away from the flushing nozzle, and a storage cover is connected to the side of the flushing flange near the roller brush, the storage cover having a funnel-shaped structure.

[0014] Preferably, the spray edge on the flushing flange has an outward-spreading structure.

[0015] Preferably, the rinsing positioning assembly includes a positioning plate, one end of which is fixed to the outer wall of the rinsing press handle via a rotating shaft, and a positioning hole is provided at the end of the positioning plate away from the rinsing press handle. A rivet is provided on the outer wall of the rinsing gun handle near the positioning plate, and the positioning hole is movably connected to the rivet.

[0016] Preferably, the water outlet of the flushing gun is connected in sequence to the flushing flange and the water inlet of the flushing nozzle via a hose, and the water inlet of the flushing gun is connected to an external water supply mechanism via a hose.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This application cleans the inside of the condenser tube by rinsing-flushing-rinsing. The inner wall of the condenser tube is initially cleaned by the rinsing nozzle, the condenser tube is brushed and cleaned by the roller brush located at the rear end of the rinsing nozzle, and the rinsing flange located at the rear end of the roller brush cleans the condenser tube after brushing and cleaning. The rinsing-flushing-rinsing sequence has good cleaning effect and high efficiency.

[0019] 2. The nozzles inside the flushing nozzle are divergent nozzles, which can effectively flush the inside of the condenser tube. Compared with the front-flush nozzles on the market, the cleaning effect is better.

[0020] 3. Burrs on the roller brush can be collected using a collection cover. After the roller brush is finished washing, it is collected using the collection cover and then rinsed using the rinsing flange. The collection cover has a funnel-shaped structure, which allows the water sprayed from the rinsing flange to adhere closely to the outer wall of the collection cover and clean the inner wall around the condenser pipe. After collection, the burrs on the roller brush are prevented from blocking the water sprayed from the rinsing flange, resulting in a good rinsing effect.

[0021] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is an isometric view of the condenser of the present invention;

[0023] Figure 2 This is an isometric view of the cleaning device of the present invention;

[0024] Figure 3 This is a schematic diagram of the cleaning device structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the drive motor and cleaning roller of the present invention;

[0026] Figure 5 This is a schematic diagram of the flushing flange and storage cover of the present invention;

[0027] Figure 6 For the present invention Figure 3 Enlarged view of area A in the middle.

[0028] Figure Descriptions: 1. Condenser; 2. Condenser tube; 3. Cleaning device; 31. Main pipe; 311. Slide chute; 32. Flushing assembly; 321. Flushing nozzle; 33. Rinsing assembly; 331. Cleaning roller; 332. Flushing flange; 333. Roller brush; 334. Collection cover; 34. Flushing gun; 35. Flushing press handle; 36. Flushing positioning assembly; 361. Positioning plate; 362. Positioning eyelet; 363. Rivet; 37. Drive assembly; 371. Drive motor; 4. Support leg; 38. Sleeve; 381. Sliding block. Detailed Implementation

[0029] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Please refer to the appendix carefully. Figure 1-6 As shown, a cleaning device for the condenser tubes of a steam turbine in a thermal power plant includes a condenser 1, condenser tubes 2, and a cleaning device 3 for cleaning the inside of the condenser tubes 2. The bottom of the condenser 1 is provided with a support leg 4. The condenser tubes 2 are evenly distributed inside the condenser 1. The cleaning device 3 includes a main pipe 31, a flushing assembly 32, and a rinsing assembly 33. Both the flushing assembly 32 and the rinsing assembly 33 are located on the main pipe 31, and the flushing assembly 32 is located on one side of the rinsing assembly 33.

[0033] It should be noted that this application cleans the inside of the condenser tube 2 by rinsing-flushing-rinsing. The inner wall of the condenser tube 2 is initially cleaned by the rinsing nozzle 321, the condenser tube 2 is brushed and cleaned by the roller brush 333 located at the rear end of the rinsing nozzle 321, and the condenser tube 2 is cleaned again by the rinsing flange 332 located at the rear end of the roller brush 333. The rinsing-flushing-rinsing sequence has a good cleaning effect and high efficiency.

[0034] Please refer to the appendix carefully. Figure 2 , 3 As shown in Figure 6, a flushing gun 34 is provided at one end of the main pipe 31. The main pipe 31 is connected to the flushing gun 34. A flushing press handle 35 is provided on the flushing press handle 35. A flushing positioning component 36 is provided on the flushing press handle 35. The flushing positioning component 36 includes a positioning plate 361. One end of the positioning plate 361 is fixed to the outer wall of one side of the flushing press handle 35 through a pivot. A positioning hole 362 is provided through the end of the positioning plate 361 away from the flushing press handle 35. A rivet 363 is provided on the outer wall of the handle of the flushing gun 34 near the positioning plate 361. The positioning hole 362 is movably connected to the rivet 363.

[0035] It should be noted that in this implementation, the flushing positioning component 36 can save manpower during flushing. Since there are many condenser tubes 2 and the flushing time is long, pressing the flushing handle 35 for a long time will cause hand discomfort. When using it, press the flushing handle 35 to the bottom and put the positioning hole 362 on the positioning plate 361 onto the rivet 363. This can save manpower, is convenient to use, and is a humanized consideration.

[0036] Please refer to the appendix carefully. Figure 3 and 4 As shown, the rinsing assembly 33 includes a cleaning roller 331 and a rinsing flange 332. A roller brush 333 is provided on the outer circumferential wall of the cleaning roller 331. A drive assembly 37 is connected to the end of the main pipe 31 away from the inner wall of the rinsing gun 34. The drive assembly 37 includes a drive motor 371, which is connected to the end of the main pipe 31 away from the rinsing gun 34. One end of the drive motor 371 is connected to one end of the cleaning roller 331 through a coupling. The rinsing assembly 32 includes a rinsing nozzle 321, one end of which is connected to the end of the cleaning roller 331 away from the drive motor 371. The nozzles in the rinsing nozzle 321 are divergent nozzles.

[0037] It should be noted that in this embodiment, the cleaning roller 331 is driven to rotate by the drive motor 371, and the roller brush 333 follows the rotation of the cleaning roller 331 to brush the inner wall of the condenser tube 2. One end of the rinsing nozzle 321 is connected to the cleaning roller 331 and follows the rotation of the cleaning roller 331 to rinse the inner wall of the condenser tube 2. The effect is good and the efficiency is high.

[0038] Furthermore, the nozzles inside the flushing nozzle 321 are divergent nozzles, which can effectively flush the inside of the condenser tube 2, resulting in better cleaning performance compared to existing front-flush nozzles on the market.

[0039] Please refer to the appendix carefully. Figure 2-5 The main pipe 31 shown is fitted with a sleeve 38. Sliding blocks 381 are provided on the inner walls of both sides of the sleeve 38 near the end of the flushing gun 34. Sliding grooves 311 corresponding to the sliding blocks 381 are provided on the outer walls of both sides of the main pipe 31. The sliding blocks 381 slide inside the sliding grooves 311. The end of the sleeve 38 away from the flushing gun 34 is connected to the flushing flange 332. The flushing flange 332 is located on the side of the roller brush 333 away from the flushing nozzle 321. A collection cover 334 is connected to the side of the flushing flange 332 near the roller brush 333. The collection cover 334 has a funnel-shaped structure. The spray edge on the flushing flange 332 has an outward-spreading structure. The water outlet of the flushing gun 34 is connected to the water inlet of the flushing flange 332 and the water inlet of the flushing nozzle 321 in sequence through a hose. The water inlet of the flushing gun 34 is connected to an external water supply mechanism through a hose.

[0040] It should be noted that in this embodiment, the burrs on the roller brush 333 can be collected by the collection cover 334. After the roller brush 333 finishes washing, it is collected by the collection cover 334 and then rinsed by the rinsing flange 332. The collection cover 334 has a funnel-shaped structure, which makes the water sprayed from the rinsing flange 332 stick to the outer wall of the collection cover 334 to clean the inner wall around the condenser pipe 2. After being collected, the burrs on the roller brush 333 prevent the water sprayed from the rinsing flange 332 from being blocked, resulting in a good rinsing effect.

[0041] The specific process of this invention is as follows:

[0042] Before rinsing, connect the rinsing gun 34 to the external water supply mechanism and start it, slide the sleeve 38 to the side of the rinsing gun 34 through the sliding block 381, unfold the stored roller brush 333, and connect the drive motor 371 to the external power supply mechanism and start it.

[0043] During rinsing, place the rinsing nozzle 321 at one end of the condenser tube 2 inlet, press the rinsing handle 35 to flush, and fit the positioning hole 362 on the positioning plate 361 of the rinsing gun 34 onto the rivet 363. You can release the handle to rinse, saving manpower. At this time, the rinsing nozzle 321 rinses, and the roller brush 333 brushes the inner wall of the condenser tube 2. After brushing, the condenser tube 2 is cleaned again through the rinsing flange 332. The rinsing-flushing-rinsing sequence cleans the inside of the condenser tube 2. The rinsing nozzle 321 performs preliminary cleaning of the inner wall of the condenser tube 2. The roller brush 333 located at the rear end of the rinsing nozzle 321 brushes and cleans the condenser tube 2. The rinsing flange 332 located at the rear end of the roller brush 333 cleans the condenser tube 2 again. The rinsing-flushing-rinsing sequence has a good cleaning effect.

[0044] After one cleaning cycle, the sleeve 38 is slid away from the flushing gun 34 via the sliding block 381 to store the roller brush 333. The brush is then cleaned again by the flushing nozzle 321 and the flushing flange 332. The sleeve is then stored in the storage cover 334. The brush is then flushed again by the flushing flange 332. The storage cover 334 has a funnel-shaped structure, which allows the water sprayed from the flushing flange 332 to adhere closely to the outer wall of the storage cover 334 to clean the inner wall around the condenser pipe 2. After storage, the burrs on the roller brush 333 are prevented from blocking the water sprayed from the flushing flange 332 until no more wastewater flows out.

[0045] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A cleaning device for the condenser tubes of a steam turbine in a thermal power plant, comprising a condenser (1), condenser tubes (2), and a cleaning device (3) for cleaning the interior of the condenser tubes (2), characterized in that, The condenser (1) is provided with a support leg (4) at the bottom. The condenser tubes (2) are evenly distributed inside the condenser (1). The cleaning device (3) includes a main pipe (31), a flushing assembly (32) and a rinsing assembly (33). The flushing assembly (32) and the rinsing assembly (33) are both located on the main pipe (31). The flushing assembly (32) is located on one side of the rinsing assembly (33). One end of the main pipe (31) is provided with a flushing gun (34), and one end of the main pipe (31) is connected to the flushing gun (34). The flushing gun (34) is provided with a flushing pressing handle (35), and the flushing pressing handle (35) is provided with a flushing positioning component (36). The end of the main pipe (31) away from the inner wall of the flushing gun (34) is connected to a drive component (37). The flushing assembly (33) includes a cleaning roller (331) and a flushing flange (332), and a roller brush (333) is provided on the outer circumferential wall of the cleaning roller (331). The main tube (31) is fitted with a sleeve (38) on the outside. Sliding blocks (381) are provided on the inner walls of both sides of the sleeve (38) near the end of the flushing gun (34). Sliding grooves (311) corresponding to the sliding blocks (381) are provided on the outer walls of both sides of the main tube (31). The sliding blocks (381) slide inside the sliding grooves (311). The end of the sleeve (38) away from the flushing gun (34) is connected to the flushing flange (332). The flushing flange (332) is located on the side of the roller brush (333) away from the flushing nozzle (321). A storage cover (334) is connected to the side of the flushing flange (332) near the roller brush (333). The storage cover (334) has a funnel-shaped structure. The spray edge on the flushing flange (332) has an outward-spreading structure.

2. The cleaning device for the condenser tubes of a steam turbine in a thermal power plant according to claim 1, characterized in that, The drive assembly (37) includes a drive motor (371), which is connected to the end of the main pipe (31) away from the flushing gun (34). One end of the drive motor (371) is connected to one end of the cleaning roller (331) via a coupling.

3. A cleaning device for condenser tubes of a steam turbine in a thermal power plant according to claim 2, characterized in that, The rinsing assembly (32) includes a rinsing nozzle (321), one end of which is connected to the end of the cleaning roller (331) away from the drive motor (371), and the nozzles inside the rinsing nozzle (321) are divergent nozzles.

4. A cleaning device for condenser tubes of a steam turbine in a thermal power plant according to claim 1, characterized in that, The flushing positioning assembly (36) includes a positioning plate (361). One end of the positioning plate (361) is fixed to the outer wall of the flushing press handle (35) via a rotating shaft. A positioning hole (362) is provided through the end of the positioning plate (361) away from the flushing press handle (35). A rivet (363) is provided on the outer wall of the handle of the flushing gun (34) near the positioning plate (361). The positioning hole (362) is movably connected to the rivet (363).

5. A cleaning device for condenser tubes of a steam turbine in a thermal power plant according to claim 4, characterized in that, The water outlet of the flushing gun (34) is connected in sequence to the flushing flange (332) and the water inlet of the flushing nozzle (321) via a hose, and the water inlet of the flushing gun (34) is connected to an external water supply mechanism via a hose.

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