Combined online cleaning method of condenser cleaning robot and rubber ball cleaning system

Abstract

The invention provides a condenser cleaning robot and rubber ball cleaning system combined type online cleaning method which comprises a linkage cleaning step, the linkage cleaning step comprises a rubber ball launching stage, a jet flushing stage and a rubber ball recycling stage, and in the rubber ball launching stage, the jet flushing stage and the rubber ball recycling stage are combined. The rubber balls in the rubber ball transceiver are intensively transmitted to a circulating water inlet side water chamber of the condenser by adopting a water pump; in the jet flushing stage, jet flow generated when the jet robot flushes the holes attracts a part of the rubber balls to pass through the heat exchange pipe along with the jet flow; and in the rubber ball recycling stage, the rubber balls passing through the heat exchange pipe are recycled into the rubber ball receiving and sending device. The rubber ball cleaning technology and the jet cleaning technology are cooperatively associated, the heat exchange tube can be thoroughly and comprehensively cleaned, the hole flushing time of the jet robot is effectively shortened, the energy consumption and structural loss of the jet robot are reduced, and the problem that the heat exchange tube is not cleaned due to random distribution of rubber balls is avoided.

Description

Technical Field

[0001] The present invention relates to a condenser cleaning method, in particular to a combined online cleaning method of a condenser cleaning robot and a rubber ball cleaning system. Background Art

[0002] The condenser is a key component of steam power systems, widely used in thermal power plants, nuclear power plants, and marine propulsion systems. It plays a crucial role in energy recovery and water conservation, and optimizing its performance is crucial for reducing energy consumption and carbon emissions. The condenser is typically a shell-and-tube design, with numerous heat exchange tubes arranged within. Cooling water flows through the tubes, and high-temperature steam condenses outside the tubes as condensate. As the cooling water circulates within the heat exchange tubes, fouling is inevitable.

[0003] The rubber ball cleaning device is an automated system used to remove dirt from the inner walls of condenser heat exchanger pipes. It periodically injects elastic rubber balls into the cooling water pipes, using the water flow to push the balls against the pipe walls, removing deposits such as scale and biofilm, thereby restoring heat transfer efficiency. Rubber ball cleaning allows for non-stop online cleaning, avoiding the corrosion risks of traditional chemical cleaning and extending equipment life. However, rubber balls have high requirements for the flow rate and water quality of the circulating water. When the circulating water flow rate is low and there are many impurities in the heat exchange tubes, the rubber balls themselves can easily clog the heat exchange tubes, causing more serious blockages. Furthermore, because the rubber ball cleaning system injects rubber balls in a certain proportion of the number of condenser tubes, they are randomly distributed when entering the condenser, making it impossible to clean all condenser tubes. Combined with the problem of heat exchange tube blockage, the randomly distributed rubber balls are even less likely to enter the blocked heat exchange tubes, necessitating manual cleaning when necessary.

[0004] The robotic jet system is an intelligent system for removing dirt from the inner walls of condenser heat exchanger tubes. It uses a robotic arm mounted on a jet manifold to spray high-pressure water jets, precisely cleaning the tube lumens along a pre-set path. This system boasts high cleaning efficiency and minimal damage to the tube walls. However, for a more thorough removal of dirt from the heat exchange tubes, the robotic jet system requires a deep, tube-by-tube cleaning, which is time-consuming. This not only potentially impacts the unit's continuous operation, but also increases energy consumption and structural losses.

[0005] At present, there are some technical solutions that combine a rubber ball cleaning device and a jet robot device, such as the condenser cleaning and energy-saving device disclosed in Chinese utility model patent CN201620682002.8, which simply places the rubber ball cleaning device and the jet robot device in the same condenser equipment, and there is no collaborative relationship between the two.

[0006] Therefore, how to synergize the rubber ball cleaning technology with the jet cleaning technology to solve the problem that the rubber balls themselves easily clog the heat exchange tubes and the random distribution of the rubber balls causes incomplete cleaning, while also solving the problem that jet cleaning, which takes a long time to deep clean each tube, has high energy consumption and structural losses, has led people to seek an ideal technical solution. Summary of the Invention

[0007] The purpose of the present invention is to address the deficiencies of the existing technology and thus provide a combined online cleaning method of a condenser cleaning robot and a rubber ball cleaning system, which synergizes the rubber ball cleaning technology with the jet cleaning technology, and can thoroughly and comprehensively clean the heat exchange tubes, effectively reducing the time for the jet robot to flush the holes, thereby reducing the energy consumption and structural loss of the jet robot, and also avoiding the problem of heat exchange tubes that are not cleaned due to the random distribution of rubber balls.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it includes a linkage cleaning step, which includes a rubber ball launching stage, a spray flushing stage and a rubber ball recovery stage. In the rubber ball launching stage, a water pump is used to launch the rubber balls in the rubber ball transceiver into the water chamber on the circulating water inlet side of the condenser; in the spray flushing stage, the jet robot is used to flush the holes of the condenser heat exchange tubes in the water chamber on the circulating water inlet side of the condenser. The jet generated by the jet robot when flushing the holes attracts a part of the rubber balls to pass through the heat exchange tubes with the jet. The jet robot moves in the water chamber on the circulating water inlet side of the condenser to replace the heat exchange tubes for flushing the holes. The rubber ball launching stage can replenish the rubber balls in the water chamber on the circulating water inlet side of the condenser; in the rubber ball recovery stage, the rubber balls that have passed through the heat exchange tubes are recovered into the rubber ball transceiver.

[0009] Based on the above, the rubber ball launching stage and the spraying and flushing stage are performed alternately: in the spraying and flushing stage, the water pump is used to provide the spraying water flow to the spraying robot.

[0010] Based on the above, the rubber ball emitting stage and the rubber ball recovery stage are carried out alternately: a rubber ball transmitting and receiving net is provided in the rubber ball transceiver. In the rubber ball emitting stage, the water pump is used to discharge water to the rubber ball transceiver, and the water carries the rubber ball on the rubber ball transmitting and receiving net into the water chamber on the circulating water inlet side of the condenser; in the rubber ball recovery stage, the water flow on the circulating water outlet side of the condenser carries the rubber ball into the rubber ball transceiver, and the rubber ball is intercepted by the rubber ball transmitting and receiving net in the rubber ball transceiver.

[0011] Based on the above, in the rubber ball recovery stage, the water pump is used to extract water from the rubber ball transmitter and receiver, thereby generating a suction force that causes the rubber balls to reach the rubber ball transmitter and receiver net from the circulating water outlet side of the condenser.

[0012] Based on the above, a ball receiving chamber is provided on the circulating water outlet side of the condenser. During the rubber ball recovery stage, the water pump is used to discharge water into the ball receiving chamber to assist the rubber balls to enter the rubber ball transceiver from the ball receiving chamber.

[0013] Based on the above, when the spray flushing stage begins, the rubber ball recovery stage begins synchronously.

[0014] Based on the above, the water pump adopts a variable frequency motor, and the water pump motor changes frequency when alternating between the rubber ball emission stage and the spray flushing stage.

[0015] Based on the above, in the jet flushing stage, the jet robot flushes the holes of the heat exchange tubes row by row.

[0016] Based on the above, a filter is provided at the inlet end of the water pump, and after the linkage cleaning step, a sewage discharge step for discharging sewage from the filter is also provided.

[0017] Based on the above, before the linkage cleaning step, a pre-flushing step is further provided, so that the jet robot pre-flushes the heat exchange tubes in the water chamber on the circulating water inlet side of the condenser.

[0018] Compared with the prior art, the present invention has substantial characteristics and progress. Specifically, the effective combination of the three stages of launching rubber balls, jet flushing and recovering rubber balls realizes the coordinated association of rubber ball cleaning technology and jet cleaning technology: in the stage of launching rubber balls, a water pump is used to launch the rubber balls in the rubber ball transceiver in a centralized manner, avoiding the situation where the rubber balls are attracted by the jet of the jet robot and the capture efficiency is low due to the launch of the rubber balls one by one; in the jet flushing stage, the jet generated by the jet robot when flushing the hole can efficiently attract and capture the rubber balls in the water chamber, so that the rubber balls pass through the heat exchange tube with the jet, which can thoroughly and comprehensively clean the heat exchange tube, effectively reducing the time of the jet robot for flushing the hole, thereby reducing the energy consumption and structural loss of the jet robot, and also avoiding the problem of heat exchange tubes that are not cleaned due to the random distribution of rubber balls.

[0019] The ball transmitter and receiver during the ball launch phase and the spray robot during the jet flushing phase utilize the same water pump, resulting in a high head and facilitating centralized ball launch. The pump also draws water from the ball transmitter and receiver, allowing the jet flushing and ball recovery phases to proceed simultaneously, reducing equipment investment and maintenance costs. During the ball recovery phase, the pump assists in returning balls from the collection chamber to the ball transmitter and receiver. Powering all three phases, the system utilizes a single water pump, offering advantages such as energy savings, space savings, reduced noise, and lower investment and maintenance costs.

[0020] The rubber ball transmitter and receiver adopts water flow in opposite directions in the rubber ball launching stage and the rubber ball recovery stage, and the rubber ball recovery and centralized launching are realized by temporarily storing and intercepting the rubber balls through the rubber ball transmitting and receiving net.

[0021] The jet flushing stage and the rubber ball recovery stage are started synchronously, which can reduce the cleaning time of the overall linkage cleaning step. The step is compact and efficient and has little impact on the normal circulation of the condenser.

[0022] A jet robot is used to perform row-by-row flushing, continuously affecting the turbulence caused by hole flushing. After the jet robot moves multiple times, there is still a certain amount of residual rubber balls in the water chamber on the circulating water inlet side of the condenser, which can be attracted and captured into the heat exchange tubes, so as to reduce the number of stage cycles of the linkage cleaning steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic flow chart of the rubber ball emission stage, the spray rinsing stage and the rubber ball recovery stage in the linked cleaning step of the present invention; Figure 2 It is a schematic flow chart of another embodiment of the spray washing stage and the rubber ball recovery stage of the present invention; Figure 3 It is a schematic diagram of the overall waterway structure of the present invention; Figure 4 yes Figure 3 Schematic diagram of the related structures of the rubber ball transceiver, water pump and filter; Figure 5 yes Figure 3 Schematic diagram of the relevant structures of the middle condenser, injection robot and ball receiving room; Figure 6 It is a schematic diagram of the three-dimensional structure of the rubber ball transceiver and filter of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of the rubber ball transceiver of the present invention.

[0024] In the figure, the accompanying drawings are marked as follows: The rubber ball launching stage S1, the spray flushing stage S2, and the rubber ball recovery stage S3; Condenser circulation water inlet side 101, condenser circulation water outlet side 102; Ball transceiver 2, ball transceiver net 21, water pump tube 22, ball sending and receiving tube 23, ball sending tube 231, ball receiving tube 232, third three-way valve 233, observation mirror 24, ball adding port 25, exhaust port 26, ball removal tube 27, ball chamber 201, water flow chamber 202; Spray robot 3, spray main pipe 31, robotic arm 32, screw rod 33; water pump 4, first three-way valve 41, second three-way valve 42; ball collecting chamber 5; filter 6. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0026] Example 1 like Figure 1-Figure 7 As shown, the combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system of the present application includes a linkage cleaning step, which includes a rubber ball launching stage S1, a spray washing stage S2 and a rubber ball recovery stage S3, for example, Figure 1 As shown, Figure 1 The left, middle and right parts are flow charts of the rubber ball launching stage S1, the spray washing stage S2 and the rubber ball recovery stage S3 respectively.

[0027] During the ball launch phase S1, a water pump 4 is used to centrally launch the balls from the ball transceiver 2 into the water chamber 101 on the condenser's circulating water inlet side. The balls centrally launched into the water chamber 101 on the condenser's circulating water inlet side are advantageously attracted and captured by the jet generated by the jet robot 3 in the jet flushing phase S2, and then effectively flushed through the heat exchange tubes by the jet, completing the cleaning of the heat exchange tubes. The prior art typically uses a low-speed water flow driven by a ball pump to carry the balls in the ball loader, slowly entering the water chamber 101 on the condenser's water inlet side. However, the present application utilizes a high-speed water flow discharged from the outlet of the water pump 4 to launch the balls, enabling centralized launch of the balls. This avoids the situation in which the balls are attracted and captured inefficiently by the jet of the jet robot 3 during the jet flushing phase S2 due to the individual launch of the balls.

[0028] In the jet flushing stage S2, the jet robot 3 is used to flush the holes of the heat exchange tubes of the condenser in the water chamber 101 on the circulating water inlet side of the condenser. The jet generated by the jet robot 3 during the hole flushing attracts a part of the rubber balls to pass through the heat exchange tubes with the jet. The rubber balls are impacted by the jet and pass through the heat exchange tubes, which can complete the thorough and comprehensive cleaning of the heat exchange tubes. This avoids the rubber balls from being blocked in the heat exchange tubes due to dirt in the tubes, and effectively reduces the hole flushing time of the jet robot 3, so as to reduce the energy consumption and structural loss of the jet robot 3; moreover, the solution of using the high-pressure jet of the jet robot 3 to attract the rubber balls into the jet also avoids the problem of heat exchange tubes that are not cleaned due to the random distribution of the rubber balls.

[0029] During the jet flushing phase (S2), the high-pressure jet generated by the jet robot 3 is typically much higher than the pressure in the condenser's front and rear water chambers. For example, the nozzle pressure of the jet robot 3 can reach 2.0 MPa, and the combined flow rate of the jet and circulating water can reach 6.4 m³ / h. However, the pressure in the condenser's front and rear water chambers is typically 0.2 MPa / 0.16 MPa, with a circulating water flow rate of 2.6 m³ / h. Consequently, a significant pressure differential is formed between the jet robot 3's nozzle and the heat exchange tube orifice. Based on this pressure differential, the high-pressure jet efficiently attracts and captures the rubber balls in the water chamber, forcing them into the heat exchange tube, where they are rapidly swept through the tube by the jet. Parameters such as the range, size, and shape of this pressure differential can be adjusted by adjusting parameters such as the spacing between the jet robot 3's nozzle and the heat exchange tube orifice and the divergence angle of the jet robot 3's nozzle. Therefore, the high-pressure jet generated by the injection robot 3 is used to efficiently attract and capture the rubber balls in the water chamber based on the pressure difference area, which will effectively reduce the randomness of the rubber balls entering the heat exchange tube. During the end time of the rubber ball emission stage S1, a portion of the rubber balls (or a near-quantitative amount) can be concentratedly attracted and captured into the heat exchange tube near the injection robot 3.

[0030] Moreover, the rubber ball enters the heat exchange tube and cooperates with the jet to clean the heat exchange tube, which significantly improves the efficiency of the hole flushing of the spray robot 3. For example, under the premise of using only the spray robot 3 for hole flushing, it is usually necessary to perform high-pressure continuous flushing on the same heat exchange tube for 2 minutes to complete the cleaning operation inside the heat exchange tube more thoroughly and comprehensively. Moreover, since the ejected jet will continue to weaken in the heat exchange tube, there may be areas at the far end of the heat exchange tube that are not effectively cleaned. In the present application, after the rubber ball is attracted and captured into the heat exchange tube by the jet, the rubber ball passes through the heat exchange tube to complete the thorough and comprehensive cleaning of the heat exchange tube. Not only does it not require long-term continuous spraying of high-pressure jets, but there are also no cleaning dead corners (i.e., dead corners at the far end of the heat exchange tube), which effectively reduces the hole flushing time of the spray robot 3, thereby reducing the energy consumption and structural losses of the spray robot 3.

[0031] In addition, during the jet flushing stage S2, the jet robot 3 can move within the water chamber on the condenser's circulating water inlet side 101 to replace the heat exchange tubes being flushed. For example, after the jet robot 3 has been flushing a batch of heat exchange tubes for a certain period of time, if the remaining rubber balls in the water chamber are still sufficient to attract, capture, and pass through all or most of the next batch of heat exchange tubes to be flushed, the jet robot 3 moves to flush the next batch of heat exchange tubes. When the remaining rubber balls in the water chamber are insufficient to attract, capture, and pass through all or most of the next batch of heat exchange tubes to be flushed, the rubber ball launch stage S1 can be performed to replenish the rubber balls in the water chamber on the condenser's circulating water inlet side 101. Generally speaking, based on the relevant structure and operating data of the condenser, the interval between each movement of the jet robot 3 and the launch interval during the jet flushing stage S2 can be preset, so that most or all of the heat exchange tubes can rely on the high-pressure jet to attract and capture at least one rubber ball during the flushing process.

[0032] Of course, after the rubber ball enters the heat exchange tube due to the pressure difference between the front and rear water chambers (rather than being attracted by the jet and captured in the heat exchange tube), if the rubber ball gets stuck in the heat exchange tube, the subsequent jet robot 3 can also flush it out to prevent the heat exchange tube from being blocked.

[0033] In the rubber ball recovery stage S3, the rubber balls that have passed through the heat exchange tubes are recovered into the rubber ball transceiver 2 so that the rubber balls can be collectively emitted again.

[0034] In this embodiment, the rubber ball launching stage S1, the spray flushing stage S2, and the rubber ball recovery stage S3 can be performed alternately in sequence, or can be performed in pairs simultaneously, for example, the rubber ball launching stage S1 can be performed simultaneously with the spray flushing stage S2, or the rubber ball recovery stage S3 can be performed simultaneously with the spray flushing stage S2, or the rubber ball launching stage S1 can be performed first, and then the spray flushing stage S2 and the rubber ball recovery stage S3 can be performed simultaneously; in addition, the stages can be switched without interval, or the next stage can be performed after a period of time after the end of the previous stage.

[0035] Example 2 Based on Example 1, in this embodiment, the rubber ball launching stage S1 and the spraying and flushing stage S2 are performed alternately. Specifically, in the spraying and flushing stage S2, the water pump 4 is used to provide a spraying water flow to the spraying robot 3.

[0036] In this embodiment, since the outlet end of the water pump 4 provides high-pressure water flow to the rubber ball transceiver 2 and the spray robot 3 respectively, the rubber ball launching stage S1 and the spray flushing stage in this embodiment cannot be performed synchronously. If the water pump 4 is diverted, it will affect the normal operation of both the rubber ball transceiver 2 and the spray robot 3. Therefore, the rubber ball launching stage S1 and the spray flushing stage S2 are performed alternately, and the two can be performed alternately with or without an interval.

[0037] In this embodiment, since the water pressures required by the rubber ball transceiver 2 and the spray robot 3 are different, the water pump 4 can use a variable frequency motor. For example, when the outlet end of the water pump 4 alone provides water flow to the rubber ball transceiver 2, the motor frequency is set to a value that can provide the pressure required by the rubber ball transceiver 2 (for example, 40Hz); when the outlet end of the water pump 4 alone provides water flow to the spray robot 3, the motor frequency is set to a value that can provide the pressure required by the spray robot 3 (for example, 50Hz).

[0038] like Figure 3 、 Figure 4 、 Figure 6 As shown, a second three-way valve 42 can be set at the outlet of the water pump 4 to change the flow direction of the high-pressure water flow at the outlet of the water pump 4. The third three-way valve 42 allows the outlet of the water pump 4 to be connected to the rubber ball transceiver 2 or the spray robot 3 respectively.

[0039] In this embodiment, the rubber ball transceiver 2 and the spray robot 3 use the same water pump 4. The high-pressure water pump used for the spray robot 3 has a high head, which can easily achieve the purpose of centralized rubber ball emission. It also has the advantages of energy saving, space saving, noise reduction, and lower investment and maintenance costs.

[0040] In other embodiments, the launching of the rubber ball by the rubber ball transmitter and receiver 2 and the spraying by the spraying robot 3 may be performed by two water pumps, so as to realize the launching of the rubber ball stage S1 during the spraying and flushing stage S2 at the same time.

[0041] Example 3 Based on Example 1 or Example 2, in this embodiment, the rubber ball launching stage S1 and the rubber ball recovery stage S3 are performed alternately.

[0042] Specifically, a ball transceiver net 21 is provided in the ball transceiver 2, which divides the ball transceiver 2 into two chambers, namely the ball chamber 201 and the water flow chamber 202. The ball chamber 201 is connected to the water chamber on the condenser circulation water inlet side 101 and the condenser circulation water outlet side 102 through pipelines, and the ball is placed or intercepted in the ball chamber 201; the water flow chamber 202 is connected to the outlet end of the water pump 4 through a pipeline to carry out the ball launching stage S1, and the water flow chamber 202 is also connected to a pipeline for discharging the water flow in the ball transceiver 2.

[0043] More specifically, Figure 7As shown, the rubber ball transceiver 2 can adopt a tank structure and be divided into an upper and lower tank body, which are connected by a flange, and the rubber ball transceiver net is arranged at the flange connection; the rubber ball transceiver 2 can be provided with an observation mirror 24, a ball adding port 25, an exhaust port 26 and a pressure transmitter and other related functional structural accessories; further, the rubber ball transceiver net 21 is funnel-shaped, and the rubber ball sending and receiving cavity 201 is arranged on the wide mouth side of the rubber ball transceiver net 21. The wide mouth side of the funnel can intercept more rubber balls and is also conducive to water flow to flush the rubber balls on the rubber ball transceiver net 21 to clean the rubber balls; the upper end of the rubber ball transceiver net 21 can be fixed at the flange connection of the upper and lower tank bodies, and the lower end of the rubber ball transceiver net 21 can be connected to the rubber ball removal tube 27. The rubber ball removal tube 27 and the ball adding port 25 are used to manage the rubber balls in the rubber ball transceiver 2; the rubber ball removal tube 27 and the rubber ball transceiver net 21 can be fixed by a bracket arranged in the rubber ball transceiver 2.

[0044] In the rubber ball launching stage S1, the water pump 4 is used to discharge water to the rubber ball transceiver 2. The water flows into the water flow cavity 202, and then passes through the rubber ball transmitting and receiving net 21 into the rubber ball cavity 201. The water carries the rubber ball on the rubber ball transmitting and receiving net 21 and enters the water chamber 101 on the circulating water inlet side of the condenser through the pipeline.

[0045] In the rubber ball recovery stage S3, the water flow on the condenser circulation outlet side 102 carries the rubber balls into the rubber ball cavity 201 of the rubber ball transceiver 2, and the rubber balls are intercepted on the rubber ball transceiver 2 by the rubber ball transceiver net 21. The water flows through the rubber ball transceiver net 21 into the water flow cavity 202 and is discharged from the rubber ball transceiver 2 through the pipeline.

[0046] In this embodiment, since the water flow directions of the ball transmitter and receiver 2 are opposite during the ball launching stage S1 and the ball recovery stage S3, the ball launching stage S1 and the ball recovery stage S3 in this embodiment cannot be performed synchronously. Therefore, the ball launching stage S1 and the ball recovery stage S3 are performed alternately, and the two can be performed alternately with or without an interval.

[0047] In this embodiment, the ball transmitter and receiver 2 uses water flows in opposite directions in the ball launching stage S1 and the ball recovery stage S3 , and the ball recovery and centralized launching are achieved by temporarily storing and intercepting the balls on the ball transmitting and receiving net 21 .

[0048] Example 4 Based on Example 3, during the ball recovery phase S3, water pump 4 is used to extract water from the ball transceiver 2, thereby generating a suction force that propels the balls from the condenser circulation outlet 102 to the ball transceiver net 21. In conjunction with Example 2, the water extracted from the ball transceiver 2 by pump 4 during the ball recovery phase S3 can be discharged by pump 4 to the spray robot 3. Therefore, the spray flushing phase S2 and the ball recovery phase S3 do not conflict, and the two can be performed simultaneously.

[0049] Specifically, a water pump pipe 22 is provided on the rubber ball transceiver 2, and the water pump pipe 22 is connected to the water flow chamber 202 of the rubber ball transceiver 2 (in Example 3). The water pump pipe 22 is connected to the second three-way valve 42 of the first three-way valve 41 through two branched branches (the two branches are connected to the water pump pipe 22 in parallel). The first three-way valve 41 is connected to the inlet end of the water pump 4, and the second three-way valve 42 is connected to the outlet end of the water pump 4. The first three-way valve 41 is also connected to the condenser circulation water inlet side 101 so that the water pump 4 obtains water flow, or the first three-way valve 41 is connected to other water sources so that the water pump 4 obtains water flow.

[0050] In other embodiments, such as the commonly used existing technology, a ball pump is used to generate suction force at the condenser circulation water outlet side 102 to return the ball to the ball loader; intersecting with this embodiment, this embodiment does not require the additional use of a ball pump, reducing equipment investment and maintenance costs, and this embodiment has the advantages of energy saving, space saving, and noise reduction.

[0051] Example 5 Based on Example 4, in this embodiment, a ball receiving chamber 5 is provided on the condenser circulating water outlet side 102. This chamber is used to intercept and temporarily store rubber balls that have passed through the heat exchange tubes before the rubber ball recovery stage S3. During the rubber ball recovery stage S3, the chamber 5 is connected to the rubber ball transceiver 2, allowing the rubber balls to be transferred from the chamber 5 to the transceiver 2, completing the rubber ball recovery. A tilted ball collecting net is provided within the chamber 5. This net, as it is a widely used prior art, will not be described in detail here.

[0052] Furthermore, in the rubber ball recovery stage S3, a water pump 4 is used to discharge water into the ball receiving chamber 5 to assist the rubber balls to enter the rubber ball transceiver 2 from the ball receiving chamber 5; the position where the water pump 4 discharges water into the ball receiving chamber 5 can be on either side of the ball receiving net. For example, when the water flow is discharged on the side of the ball receiving net used to intercept the rubber balls, the water flow is sprayed on the ball receiving net along the direction of the condenser circulating water flow, impacting the rubber balls on the ball receiving net, thereby assisting the rubber balls to pass through the pipeline into the rubber ball transceiver 2; for example, when the water flow is discharged on the back side of the ball receiving net, it plays a backwash role, and can also help the rubber balls to pass through the pipeline into the rubber ball transceiver 2; however, considering that a backwash flow that is too large will cause an imbalance in the pressure difference between the front and rear water chambers of the condenser, it is preferred to adopt a solution of discharging water flow to the side of the ball receiving net used to intercept the rubber balls.

[0053] As for the pipeline route for the water pump 4 to discharge water into the ball receiving room 5, specifically, the water discharged from the outlet end of the water pump 4 can choose to flow to the ball receiving room 5 or the spraying robot 3 after passing through the second three-way valve 42. This can be achieved by adding another three-way valve, or by setting valves on the branch of the ball receiving room 5 and the branch of the spraying robot 3 respectively, wherein the branch of the ball receiving room 5 and the branch of the spraying robot 3 are connected in parallel.

[0054] Regarding the pipeline route for the ball receiving chamber 5 to recover the rubber balls from the rubber ball transceiver 2, specifically, the rubber ball transceiver 2 is provided with a ball sending and receiving tube 23, which is connected to the rubber ball cavity 201 of the rubber ball transceiver 2 (in Example 3), and the ball sending and receiving tube 23 is respectively connected to the ball sending tube 231 and the ball receiving tube 232 through the third three-way valve 233. The ball sending tube 231 is connected to the water chamber 101 on the circulating water inlet side of the condenser, and the ball receiving tube 232 is connected to the ball receiving chamber 5; the third three-way valve 233 can simultaneously close the passages between the ball sending tube 231 and the ball receiving tube 232 and the ball sending and receiving tube 23, or the third three-way valve 233 can only allow the ball sending tube 231 or the ball receiving tube 232 to be connected to the ball sending and receiving tube 23.

[0055] Further, if Figure 6 As shown, when it is necessary to connect multiple ball-delivering tubes 231 and multiple ball-receiving tubes 232, multiple ball-delivering and ball-receiving branch tubes can be connected to the ball-delivering and ball-receiving tube 23, and each of the ball-delivering and ball-receiving branch tubes is provided with a third three-way valve 233, and each is connected to a ball-delivering tube 231 and a ball-receiving tube 232 through a third three-way valve 233.

[0056] Example 6 Based on Example 5, Figure 2 As shown, in this embodiment, the spray flushing stage S2 and the rubber ball recovery stage S3 can be started synchronously.

[0057] Specifically, when the spraying and flushing stage S2 begins, the rubber ball recovery stage S3 starts synchronously; when the spraying and flushing stage S2 ends, the rubber ball recovery stage uses the water pump 4 to discharge water into the ball receiving chamber 5.

[0058] Thus, in this embodiment, after the rubber ball ejecting stage S1 is completed, the spraying and flushing stage S2 and the rubber ball recovery stage S3 can be connected, and the spraying and flushing stage S2 and the rubber ball recovery stage S3 start synchronously.

[0059] The following describes the specific implementation principles of this implementation: like Figure 1 As shown, during the rubber ball launching stage S1: the outlet end of the water pump 4 is connected to the rubber ball transmitter and receiver 2 through the second three-way valve 42, and the water flow discharged by the water pump 4 carries the rubber balls on the rubber ball transmitting and receiving net 21 through the third three-way valve 233 and enters the water chamber 101 on the circulating water inlet side of the condenser from the ball launching pipe 231; the inlet end of the water pump 4 is connected to other water sources through the first three-way valve 41 to obtain water flow (such as the circulating water at the circulating water inlet side 101 of the condenser).

[0060] like Figure 2As shown, after the rubber ball launching stage S1 is completed, the spray flushing stage S2 and the rubber ball recovery stage S3 start synchronously: the outlet end of the water pump 4 is connected to the spray robot 3 after passing through the second three-way valve 42, and the inlet end of the water pump 4 is connected to the rubber ball transceiver 2 through the first three-way valve 41. The rubber balls in the ball receiving chamber 5 pass through the ball receiving tube 232, the third three-way valve 233, and the ball receiving and sending tube 23 and enter the rubber ball transceiver 2, where the rubber balls are intercepted on the rubber ball sending and receiving net 21, and the water flow is sucked away by the water pump 4 (discharged to the spray robot 3), thereby generating a certain suction force on the water flow in the ball receiving chamber 5, prompting the rubber balls to enter the rubber ball transceiver 2.

[0061] like Figure 2 As shown, after the spray flushing stage S2 is completed, the rubber ball recovery stage S3 continues: the outlet end of the water pump 4 is connected to the ball receiving chamber 5 after passing through the second three-way valve 42, and the water pump 4 is used to discharge water into the ball receiving chamber 5 to assist the rubber balls to enter the rubber ball transceiver 2 from the ball receiving chamber 5; the inlet end of the water pump 4 is still connected to the rubber ball transceiver 2 through the first three-way valve 41 to encourage the rubber balls to enter the rubber ball transceiver 2.

[0062] After the ball recovery stage S3 is completed, the process enters the ball emission stage S1: the outlet of the water pump 4 is connected to the ball transceiver 2 through the second three-way valve 42, and the inlet of the water pump 4 is connected to other water sources through the first three-way valve 41 to obtain water flow.

[0063] Repeat the above steps.

[0064] In this embodiment, the scheme of starting the jet flushing stage S2 and the rubber ball recovery stage S3 simultaneously can reduce the cleaning time of the overall linkage cleaning step. The step is compact and efficient and has little impact on the normal circulation of the condenser.

[0065] Example 7 Based on Example 5, Figure 1 As shown, this embodiment is different from the embodiment 6. In this embodiment, the spray washing stage S2 and the rubber ball recovery stage S3 can be performed alternately or sequentially.

[0066] The following describes the specific implementation principles of this implementation: First start the spray flushing stage S2, and then start the rubber ball recovery stage S3: After the rubber ball emission stage S1 is completed, the spray flushing stage S2 starts, the outlet end of the water pump 4 is connected to the spray robot 3, and the inlet end of the water pump 4 is connected to other water sources through the first three-way valve 41 to obtain water flow (such as the circulating water at the circulating water inlet side 101 of the condenser).

[0067] Then, if Figure 1As shown, it is assumed that after the spray flushing stage S2 is completed, the rubber ball recovery stage S3 is connected: the outlet end of the water pump 4 is connected to the ball collecting chamber 5 instead of the spray robot 3; the inlet end of the water pump 4 is connected to other water sources instead of the first three-way valve 41, and is connected to the rubber ball transceiver 2 to pump water.

[0068] Or, then, as Figure 2 As shown, it is assumed that the rubber ball recovery stage S3 begins before the end of the jet flushing stage S2: the inlet end of the water pump 4 is connected to other water sources by the first three-way valve 41, and is changed to be connected to the rubber ball transceiver 2 to suck water flow to start the rubber ball recovery stage S3. At this time, the jet flushing stage S2 and the rubber ball recovery stage S3 are carried out simultaneously; then the outlet end of the water pump 4 is changed from being connected to the jet robot 3 to being connected to the ball collecting chamber 5 to end the jet flushing stage S2, and the rubber ball recovery stage S3 is carried out separately.

[0069] Example 8 Based on any of the above embodiments, in the spray flushing stage S2, the spray robot 3 flushes the holes of the heat exchange tubes row by row, which includes one row at a time, two rows at a time, three rows at a time, etc.

[0070] Specifically, the injection robot 3 includes an injection main pipe 31, which is driven by a driving device to move on the condenser circulating water inlet side 101. The injection main pipe 31 is provided with multiple rows of nozzles, and the arrangement between the nozzles is consistent with the arrangement of the condenser heat exchange tubes, so that the injection main pipe 31 is aligned with the condenser heat exchange tubes row by row / column by column during the movement to flush the tube cavity of the heat exchange tubes.

[0071] The relevant components of the spray robot 3 can adopt existing technologies. For example, the spray robot 3 includes a driving device and a robotic arm 32. The driving device includes a motor and a screw rod 33. When the motor drives the screw rod 33 to rotate, it can drive the spray main pipe 31 to move in a straight line; when the spray main pipe 31 moves, the joints of the robotic arm 32 rotate accordingly to continuously provide the spray water flow to the spray main pipe 31.

[0072] The jet robot 3 is used to perform row-by-row flushing. For example, in a certain example, a condenser has 79 rows of heat exchange tubes. After each movement of the jet robot 3, two rows of heat exchange tubes can be flushed simultaneously. The flushing of all heat exchange tubes can be completed in 40 movements. Accordingly, the number of rubber balls launched in a single time is 20% of the number of heat exchange tubes (the conventional number of launches is about 10%. This application uses a high-power water pump for launch, which can provide a larger number of single rubber ball launches). Due to the turbulence caused by continuous hole flushing (turbulence in the water chamber caused by the nozzle pressure difference area and turbulence generated when the jet robot 3 moves), after the jet robot 3 moves many times, there is still a certain amount of rubber balls in the water chamber on the circulating water inlet side of the condenser, which can be attracted and captured into most or all of the two rows of heat exchange tubes, so as to reduce the number of cycles of the rubber ball launch stage, thereby reducing the number of stage cycles of the linkage cleaning step.

[0073] Example 9 In this embodiment, a filter 6 is provided at the inlet end of the water pump 4 , and after the linkage cleaning step, a sewage discharge step for discharging sewage from the filter 6 is also provided.

[0074] Specifically, the filter 6 is connected to the inlet end of the water pump 4, so that all water flows entering the water pump 4 need to be filtered by the filter 6, for example, the water flows sucked in from the rubber ball transceiver 2 and the condenser circulation water inlet side 101 need to pass through the filter 6; the filter 6 is provided with a sewage discharge device, such as a backwash pump or a scraper / scraper bar, to realize the sewage discharge of the filter 6. The backwash pump or scraper / scraper bar of the filter 6 are all existing technologies and will not be repeated here.

[0075] In this embodiment, the filter 6 prevents the water pump 4 from being clogged by dirt and affecting its efficiency.

[0076] Example 10 In this embodiment, a pre-flushing step is provided before the linked cleaning step, so that the jet robot 3 pre-flushes the heat exchange tubes in the water chamber 101 on the circulating water inlet side of the condenser, and then enters the linked cleaning step. By reducing some of the dirt in advance, the efficiency of the linked cleaning step is increased to reduce the blockage and breakage of the rubber balls.

[0077] As a pre-flushing step of the overall process, there is no need to deeply clean the heat exchange tubes. The spray robot 3 quickly completes the cleaning and removes the easily cleaned dirt from the heat exchange tubes and tube sheets first, preventing the dirt from clogging the heat exchange tubes together with the rubber balls, thereby reducing the time required for the linkage cleaning step and improving the overall cleaning effect and efficiency.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present invention. They should all be included in the scope of the technical solutions claimed for protection by the present invention.

Claims

1. A combined online cleaning method for a condenser cleaning robot and a rubber ball cleaning system, characterized in that: The method comprises a linkage cleaning step, wherein the linkage cleaning step comprises a rubber ball launching stage, a spray washing stage and a rubber ball recovery stage, wherein: In the rubber ball launching stage, a water pump is used to launch the rubber balls in the rubber ball transceiver to the water chamber on the circulating water inlet side of the condenser; During the jet flushing stage, the jet robot is used to flush the holes of the heat exchange tubes of the condenser in the water chamber on the circulating water inlet side of the condenser. The jet generated by the jet robot during the hole flushing attracts a portion of the rubber balls to pass through the heat exchange tubes along with the jet. The jet robot moves within the water chamber on the circulating water inlet side of the condenser to replace the heat exchange tubes for hole flushing. The rubber ball ejection stage can replenish the rubber balls in the water chamber on the circulating water inlet side of the condenser. In the rubber ball recovery stage, the rubber balls that have passed through the heat exchange tubes are recovered into the rubber ball transceiver.

2. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 1 is characterized in that: The rubber ball launching stage and the spraying and flushing stage are performed alternately: in the spraying and flushing stage, the water pump is used to provide the spraying robot with a spraying water flow.

3. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 1 or 2, characterized in that: The rubber ball emission stage and the rubber ball recovery stage are performed alternately: a rubber ball transmitting and receiving net is provided in the rubber ball transmitter and receiver. During the rubber ball emission stage, the water pump is used to discharge water to the rubber ball transmitter and receiver. The water carries the rubber balls on the rubber ball transmitting and receiving net into the water chamber on the circulating water inlet side of the condenser. In the rubber ball recovery stage, the water flow on the outlet side of the condenser circulation carries the rubber balls into the rubber ball transceiver, and the rubber balls are intercepted by the rubber ball transceiver net in the rubber ball transceiver.

4. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 3 is characterized in that: In the ball recovery stage, the water pump is used to extract water from the ball transmitter and receiver, thereby generating a suction force that causes the balls to reach the ball transmitter and receiver net from the circulating water outlet side of the condenser.

5. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 4 is characterized in that: A ball receiving chamber is provided on the circulating water outlet side of the condenser. During the rubber ball recovery stage, the water pump is used to discharge water into the ball receiving chamber to assist the rubber balls to enter the rubber ball transceiver from the ball receiving chamber.

6. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 5 is characterized in that: When the spray flushing stage begins, the rubber ball recovery stage begins synchronously.

7. The combined online cleaning method of the condenser cleaning robot and the rubber ball cleaning system according to claim 2 is characterized in that: The water pump adopts a variable frequency motor, and the water pump motor changes frequency when alternating between the rubber ball launching stage and the spray flushing stage.

8. The combined online cleaning method of a condenser cleaning robot and a rubber ball cleaning system according to claim 1 or 2, characterized in that: During the jet flushing stage, the jet robot flushes the holes of the heat exchange tubes row by row.

9. The combined online cleaning method of a condenser cleaning robot and a rubber ball cleaning system according to claim 1 or 2, characterized in that: The inlet end of the water pump is provided with a filter, and after the linkage cleaning step, a sewage discharge step for discharging sewage from the filter is further provided.

10. The combined online cleaning method of a condenser cleaning robot and a rubber ball cleaning system according to claim 1 or 2, characterized in that: Before the linkage cleaning step, a pre-flushing step is provided, so that the jet robot pre-flushes the heat exchange tubes in the water chamber on the circulating water inlet side of the condenser.

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