Full-plane condenser online cleaning robot device suitable for seawater cooling unit and cleaning method

Abstract

The invention discloses a full-plane condenser online cleaning robot device suitable for a seawater cooling unit. The full-plane condenser online cleaning robot device comprises a main transmission pair, an auxiliary transmission pair, an auxiliary transmission driving assembly, a water spraying pipe and a water inlet pipe. The main transmission pair is installed on the water chamber shell in the horizontal or vertical direction. The auxiliary transmission pair can be freely and movably arranged on the main transmission pair through the auxiliary transmission driving assembly, and the moving direction is perpendicular to the mounting direction of the main transmission pair; the water inlet pipe is fixed on the water chamber shell and is communicated with the water spraying pipe; the water spraying pipe is arranged on the auxiliary transmission pair and moves in the horizontal direction and the vertical direction in the cleaning plane based on common transmission of the main transmission pair and the auxiliary transmission pair. The length direction of the water spraying pipe is consistent with the moving direction of the auxiliary transmission pair; a plurality of nozzles are arranged on the water spraying pipe in the length direction and arranged in a single row. By adopting the device, the cleaning water flow and the cleaning range of a single nozzle can be improved, so that the cleaning capacity and the cleaning coverage rate are improved.

Description

Technical Field

[0001] The invention relates to an online cleaning robot device for a full-plane condenser suitable for a seawater cooling unit and its operation logic, and in particular to the field of underwater cleaning of condenser tubes in a condenser water chamber of a seawater cooling unit. Background Art

[0002] After long-term operation, condensers often have dirt attached to the condenser tube wall, resulting in reduced heat exchange efficiency. The application of condenser online cleaning robots is an important way to improve the above problems. At present, the condenser online cleaning robots mentioned in the existing public technology mostly use screw drive or mechanical arm drive. Products using screw drive usually use double rows of staggered nozzles, with a large number of nozzles, high requirements for cleaning water sources, and a small single nozzle cleaning water flow rate; at the same time, only one direction of movement can be achieved, and it is impossible to achieve dead-angle cleaning of the tube plate surface. In addition, the total height of the water spray pipe is large, and the cleaning coverage rate is low in the non-rectangular tube plate surface water chamber. Therefore, the screw drive type condenser online cleaning robot products in the current public technology have the problems of small single nozzle cleaning flow rate, limited cleaning capacity, and low adaptability to the shape of the water chamber. Therefore, it is necessary to study a device that can improve the cleaning capacity and cleaning coverage rate of the condenser cleaning robot. Summary of the invention

[0003] The purpose of the present invention is to solve the defects existing in the prior art and provide a full-plane condenser online cleaning robot device suitable for seawater cooling units, which can effectively improve the cleaning coverage and cleaning capacity.

[0004] In order to achieve the above object, the technical solution provided by the present invention is as follows:

[0005] A full-plane condenser online cleaning robot device suitable for a seawater cooling unit comprises a main transmission pair, a secondary transmission pair, a secondary transmission drive assembly, a water spray pipe and a water inlet pipe; the main transmission pair is mounted on a water chamber shell in a horizontal or vertical direction; the secondary transmission pair is freely movably arranged on the main transmission pair through the secondary transmission drive assembly, and the moving direction is perpendicular to the mounting direction of the main transmission pair; the water inlet pipe is fixed on the water chamber shell and communicated with the water spray pipe; the water spray pipe is arranged on the secondary transmission pair, and moves in both horizontal and vertical directions within a cleaning plane based on the common transmission of the main transmission pair and the secondary transmission pair; the length direction of the water spray pipe is consistent with the moving direction of the secondary transmission pair; a plurality of nozzles are arranged on the water spray pipe along the length direction, and the nozzles are arranged in a single row.

[0006] The present invention arranges the water spray pipe on the auxiliary transmission pair, and realizes horizontal and vertical movement through the main transmission pair and the auxiliary transmission pair, so as to effectively realize full cleaning coverage. At the same time, the length direction of the water spray pipe is consistent with the moving direction of the auxiliary transmission pair, so that its length does not need to cover the height of the entire tube plate surface, which can not only adapt to the water chamber working condition of the non-rectangular tube plate surface, but also the nozzles only need to be arranged in a single row, which effectively reduces the number of nozzles and increases the flow rate of a single nozzle, thereby improving the cleaning ability.

[0007] In some embodiments, preferably, the number of nozzles is less than 20.

[0008] Furthermore, a segmented guide rail matched with the auxiliary transmission pair is provided on the water spray pipe; track limit blocks are provided at both ends of the segmented guide rail, and the movement of the water spray pipe is limited by the segmented guide rail and the guide rail limit blocks.

[0009] Furthermore, the main transmission pair and the auxiliary transmission pair are both driven by screws and nuts.

[0010] In some embodiments, as a preference, the main transmission pair includes a servo motor, a main transmission screw and a main transmission nut; the main transmission screw is rotatably arranged on the water chamber housing; the servo motor is fixedly mounted on the water chamber housing and is connected to the main transmission screw through a reducer; the main transmission nut is detachably mounted on the main transmission screw. Through the detachable design of the main transmission nut, the sub-transmission pair components can be disassembled and installed without disassembling the main transmission screw, which can be used for both full installation and retrofitting and upgrading of the existing condenser online cleaning robot that only uses the main transmission pair.

[0011] Furthermore, the auxiliary transmission pair includes an auxiliary transmission screw and a driving copper sleeve; a transmission gear is fixedly provided on the circumference of the driving copper sleeve; the auxiliary transmission drive assembly adopts a servo motor, a reducer and a gear transmission to transmit power to the auxiliary transmission pair through the transmission gear; there are two main transmission pairs, and the two ends of the auxiliary transmission screw are respectively rotatably provided on the main transmission nuts of the two main transmission pairs; the water spray pipe is rotatably connected to the driving copper sleeve; a plurality of sliders are provided on the auxiliary transmission screw, and the water spray pipe moves on the corresponding sliders through the segmented guide rails.

[0012] Preferably, the water spray pipe is rotatably connected to the driving copper sleeve via a thrust ball bearing.

[0013] Among them, the main transmission nut and driving copper sleeve are made of aluminum bronze, and the main transmission screw, auxiliary transmission screw, transmission gear, auxiliary transmission nut, water spray pipe and other components in the water chamber are made of SAF2205 duplex stainless steel to resist seawater corrosion; a protective cover is provided on the outside of the auxiliary transmission drive assembly, and the protective cover and its transmission cavity have an IP68 protection grade; the driving copper sleeve adopts a dynamic seal design.

[0014] The present invention also discloses a cleaning method using the above-mentioned full-plane condenser online cleaning robot device. The specific cleaning method is as follows: after the system power-on self-test is completed, a high-pressure, large-flow cleaning water source continuously enters the water spray pipe from the water inlet pipe and then is ejected through the nozzle; the water spray pipe, the auxiliary transmission pair, and the auxiliary transmission drive assembly move horizontally under the drive of the main transmission pair. When moving to the set cleaning position, the main transmission pair stops transmission, and the auxiliary transmission pair and the auxiliary transmission drive assembly work together to drive the water spray pipe to move in the vertical direction, so that the holes are accurately cleaned at each cleaning station. After the cleaning of the station is completed, it moves in the vertical direction again to clean the next cleaning station; when all cleaning stations at a cleaning position are cleaned, the main transmission pair drives to realize horizontal movement to the next cleaning position, and then the auxiliary transmission pair drives to realize vertical movement to complete the cleaning of each cleaning station at the cleaning position; when all cleaning positions are cleaned, the device returns to the initial position; wherein, the flow rate of each nozzle of the water spray pipe is not less than 120L / min.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention increases the freedom of movement of the condenser online cleaning robot, which can improve the cleaning coverage and adaptability to the shape of the water chamber; and since the demand for the number of nozzles is reduced after the freedom of movement is improved, the flow rate of a single nozzle will be greatly increased, thereby improving the cleaning ability; at the same time, since the number of nozzles is reduced, the requirements for the cleaning water source are also reduced accordingly; the materials and seals of key parts are specially designed, which is suitable for use in seawater environments and muddy environments. In summary, the present invention has the advantages of improving cleaning ability and cleaning coverage, and can reduce the equipment cost of the cleaning water source, and has the comprehensive advantages of enhanced performance, reduced cost, and strong environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a full-plane condenser online cleaning robot device applicable to a seawater cooling unit of the present invention;

[0018] Figure 2 for Figure 1 Middle water spray pipe and its integrated parts;

[0019] Figure 3 for Figure 1 Schematic diagram of the transmission system consisting of the main transmission pair and the auxiliary transmission pair;

[0020] Figure 4 The present invention is an operation logic diagram of a full-plane condenser online cleaning robot device applicable to a seawater cooling unit.

[0021] In the figure: 1-water chamber housing, 2-main transmission pair, 3-main transmission nut, 4-auxiliary transmission pair, 4a-auxiliary transmission screw, 4b-driving copper sleeve, 5-auxiliary transmission drive assembly, 6-water spray pipe, 6a-nozzle, 6b-segmented guide rail, 6c-guide rail limit block, 7-water inlet pipe, 8a-transmission gear I, 8b-transmission gear II, 9-thrust ball bearing. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0023] like Figure 1 As shown, the full-plane condenser online cleaning robot device applicable to the seawater cooling unit of the present invention comprises a main transmission pair 2, a detachable main transmission nut 3, a secondary transmission pair 4, a secondary transmission drive assembly 5, a water spray pipe 6, and a water inlet pipe 7. Among them, the water spray pipe 6 can realize horizontal and vertical movement in the cleaning plane based on the common transmission of the main transmission pair 2 and the secondary transmission pair 4; the nozzles 6a of the water spray pipe are arranged in a single row, and the number of nozzles is less than 20; the main transmission pair 2 and the secondary transmission pair 4 are both driven by screws and nuts; the full-plane condenser online cleaning robot device applicable to the seawater cooling unit can be installed and used as a whole set, and can also be replaced and added with a detachable main transmission nut 3, a secondary transmission pair 4, a secondary transmission drive assembly 5, and a water spray pipe 6 on the basis of the main transmission pair, so as to improve the cleaning ability and cleaning coverage and realize functional upgrade.

[0024] Furthermore, the detachable main transmission nut 3 can be disassembled and installed without disassembling the main transmission screw.

[0025] Furthermore, the main transmission pair 2 is driven by a servo motor and a reducer directly driving a screw.

[0026] Further, such as Figure 2 As shown, the water spray pipe 6 is integrated with a segmented guide rail 6b and a guide rail limit 6c to provide auxiliary guidance and mechanical limit to the auxiliary transmission pair 4.

[0027] Furthermore, the auxiliary transmission drive assembly 5 is driven by a servo motor reducer and gear transmission to transmit power to the auxiliary transmission pair 4.

[0028] Further, such as Figure 3 As shown, the secondary transmission screw 4a of the secondary transmission pair 4 is fixed, and the nut adopts a driving copper sleeve 4b. The outer peripheral side of the driving copper sleeve 4b is fixed with a transmission gear II 8b that meshes with the transmission gear I 8a at the output end of the secondary transmission drive assembly 5. The power provided by the secondary transmission drive assembly 5 is transmitted through the driving copper sleeve 4b. The transmission gear II 8b rotates, driving the driving copper sleeve 4b to rotate along the secondary transmission screw 4a, and is transmitted through the thrust ball bearing 9, thereby driving the water spray pipe 6 to move vertically. And the driving copper sleeve 4b of the secondary transmission pair 4 has a dynamic seal design.

[0029] Furthermore, the main transmission pair 2 can be installed horizontally or vertically, and its installation direction is not limited. The present invention takes horizontal installation as an example.

[0030] Furthermore, the protective cover and transmission cavity of the auxiliary transmission drive assembly 5 have an IP68 protection grade.

[0031] Furthermore, the flow rate of each nozzle 6a of the water spray pipe 6 is not less than 120L / min.

[0032] Furthermore, since a degree of freedom of movement is added, the total height of the water spray pipe 6 does not need to cover the entire tube sheet surface height, and can adapt to water chamber conditions with more non-rectangular tube sheet surfaces.

[0033] The implementation principle of the cleaning of the present invention is as follows: Figure 1 As shown, during cleaning, high-pressure, high-flow cleaning water enters the water spray pipe 6 from the water inlet pipe 7, and then the cleaning water jet is injected into the condenser tube through the nozzle 6a of the water spray pipe 6. The position of the water spray pipe 6 is determined by the main transmission pair 2 and the auxiliary transmission pair 4. The main transmission pair 2 adopts a servo motor and a reducer direct drive screw drive, so that the detachable main transmission nut 3 drives the auxiliary transmission pair 4, the auxiliary transmission drive assembly 5, and the water spray pipe 6 to move horizontally as a whole; when cleaning the horizontal fixed-point coordinate, the water spray pipe 6 stops moving in the horizontal direction. At this time, the auxiliary transmission drive assembly 5 adopts a servo motor reducer drive and gear drive to transmit power to the auxiliary transmission pair 4. The drive screw 4a of the auxiliary transmission pair 4 is fixed, and the driving copper sleeve 4b of the auxiliary transmission pair 4 transmits the power provided by the auxiliary transmission drive assembly 5, driving the water spray pipe 6 to move vertically, thereby realizing the cleaning of the nozzle and the condenser tube in the vertical direction, and finally realizing the precise cleaning of the hole with large flow and large coverage.

[0034] like Figure 4 As shown, the operation logic of the full-plane condenser online cleaning robot device suitable for seawater cooling units is that after the system power-on self-test is completed, the high-pressure, large-flow cleaning water source continuously enters the water spray pipe 6 from the water inlet pipe 7 and then ejects through the nozzle 6a; the water spray pipe 6, the auxiliary transmission pair 4, and the auxiliary transmission drive assembly 5 move horizontally under the drive of the main transmission pair 2. When moving to the set cleaning position, the main transmission pair 2 stops driving, and the auxiliary transmission pair 4 and the auxiliary transmission drive assembly 5 work together to drive the water spray pipe 6 to move in the vertical direction, so that the holes can be accurately cleaned at each cleaning station. After the cleaning of the station is completed, it moves in the vertical direction again to clean the next cleaning station; when all cleaning stations at a cleaning position are cleaned, the main transmission pair 2 drives to realize horizontal movement to the next cleaning position, and then the auxiliary transmission pair 4 drives to realize vertical movement to complete the cleaning of each cleaning station at the cleaning position; when all cleaning positions are cleaned, the device returns to the initial position.

[0035] The full-plane condenser online cleaning robot device provided by the present invention can be installed and used as a whole set, and can also replace and add the detachable main transmission nut 3, auxiliary transmission pair 4, auxiliary transmission drive assembly 5, and water spray pipe 6 on the basis of the main transmission auxiliary product, so as to improve the cleaning ability and cleaning coverage rate and realize functional upgrade, as follows:

[0036] During the overall installation, the full-plane condenser online cleaning robot device of the present invention is completely installed to realize the function of the principle.

[0037] When the function is upgraded and installed, the main transmission pair 2 component of the original screw-driven condenser online cleaning robot is retained, the main transmission nut and water spray pipe and other components of the original product are removed, and the detachable main transmission nut 3, auxiliary transmission pair 4, auxiliary transmission drive component 5, and water spray pipe 6 of the present invention are installed, so as to realize the new function of the above principle, improve the cleaning ability and cleaning coverage, and realize the function upgrade.

[0038] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A full-plane condenser online cleaning robot device suitable for seawater cooling units, characterized in that: It includes a main transmission pair, an auxiliary transmission pair, an auxiliary transmission drive assembly, a water spray pipe and a water inlet pipe; the main transmission pair is installed on the water chamber shell in the horizontal or vertical direction; the auxiliary transmission pair is freely movably arranged on the main transmission pair through the auxiliary transmission drive assembly, and the moving direction is perpendicular to the installation direction of the main transmission pair; the water inlet pipe is fixed on the water chamber shell and is connected with the water spray pipe; the water spray pipe is arranged on the auxiliary transmission pair, and moves in the horizontal and vertical directions in the cleaning plane based on the common transmission of the main transmission pair and the auxiliary transmission pair; the length direction of the water spray pipe is consistent with the moving direction of the auxiliary transmission pair; the water spray pipe is provided with a plurality of nozzles along the length direction, and the nozzles are arranged in a single row.

2. The full-plane condenser online cleaning robot device according to claim 1 is characterized in that: The number of nozzles is less than 20.

3. The full-plane condenser online cleaning robot device according to claim 2 is characterized in that: The water spray pipe is provided with a segmented guide rail matched with the auxiliary transmission pair; and track limit blocks are respectively provided at both ends of the segmented guide rail.

4. The full-plane condenser online cleaning robot device according to claim 3 is characterized in that: The main transmission pair and the auxiliary transmission pair are both driven by screws and nuts.

5. The full-plane condenser online cleaning robot device according to claim 4 is characterized in that: The main transmission pair includes a servo motor, a main transmission screw and a main transmission nut; the main transmission screw is rotatably arranged on the water chamber housing; the servo motor is fixedly installed on the water chamber housing and is connected to the main transmission screw through a reducer; the main transmission nut is detachably installed on the main transmission screw.

6. The full-plane condenser online cleaning robot device according to claim 5 is characterized in that: The auxiliary transmission pair includes an auxiliary transmission screw and a driving copper sleeve; a transmission gear is fixedly provided on the circumference of the driving copper sleeve; the auxiliary transmission drive assembly adopts a servo motor, a reducer and a gear transmission to transmit power to the auxiliary transmission pair through the transmission gear; there are two main transmission pairs, and the two ends of the auxiliary transmission screw are respectively rotatably arranged on the main transmission nuts of the two main transmission pairs; the water spray pipe is rotatably connected with the driving copper sleeve; a plurality of sliders are provided on the auxiliary transmission screw, and the water spray pipe moves on the corresponding sliders through the segmented guide rails.

7. The full-plane condenser online cleaning robot device according to claim 6 is characterized in that: The main transmission nut and driving copper sleeve are made of aluminum bronze, and the main transmission screw, auxiliary transmission screw, transmission gear, auxiliary transmission nut and water spray pipe are all made of SAF2205 duplex stainless steel; a protective cover is provided on the outside of the auxiliary transmission drive component; and the driving copper sleeve adopts a dynamic seal design.

8. A cleaning method using the full-plane condenser online cleaning robot device according to any one of claims 1 to 7, characterized in that: The cleaning method is as follows: after the system power-on self-test is completed, the high-pressure, large-flow cleaning water source continuously enters the water spray pipe from the water inlet pipe and then ejects through the nozzle; the water spray pipe, the auxiliary transmission pair, and the auxiliary transmission drive assembly move horizontally under the drive of the main transmission pair. When moving to the set cleaning position, the main transmission pair stops transmission, and the auxiliary transmission pair and the auxiliary transmission drive assembly work together to drive the water spray pipe to move in the vertical direction, so that the holes are accurately cleaned at each cleaning station. After the cleaning of the station is completed, it moves in the vertical direction again to clean the next cleaning station; when all cleaning stations at a cleaning position are cleaned, the main transmission pair drives to realize horizontal movement to the next cleaning position, and then the auxiliary transmission pair drives to realize vertical movement to complete the cleaning of each cleaning station at the cleaning position; when all cleaning positions are cleaned, the device returns to the initial position; The flow rate of each nozzle of the water spray pipe is not less than 120L / min.

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