A heat exchanger rubber ball cleaning system

Abstract

The application discloses a heat exchanger rubber ball cleaning system and relates to the technical field of cleaning equipment. The rubber ball comprises, from inside to outside, a separation layer, a deformation layer and a cleaning layer which are sequentially arranged and connected. The traction rope group comprises a traction rope arranged in the separation layer, and both ends of the traction rope extend out of the rubber ball. The driving unit is in transmission connection with both ends of the traction rope. The separation layer separates the traction rope from the deformation layer, so that the traction rope does not directly contact the deformation layer during the cleaning operation of the rubber ball. This reduces the direct contact between the traction rope and the deformation layer, the easy embedding of the traction rope into the deformation layer when the rubber ball enters a space to be cleaned, and the damage of the deformation layer during the turning of the rubber ball. The rubber ball is not damaged too early, the probability of damage of the rubber ball is reduced, the cleaning cost is reduced, the time for repairing and replacing the rubber ball is shortened, and the heat exchanger rubber ball cleaning system has high cleaning efficiency.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a heat exchanger ball cleaning system. Background Technology

[0002] Rubber ball cleaning is an effective method for cleaning internal pipe fouling and is widely used in cleaning shell-and-tube condensers in power plants and water-cooled chillers. The core principle is to use elastic rubber balls, slightly larger than the pipe diameter, to scrub the pipe walls with the water flow. Driven by the water flow, the rubber balls are forced through the pipe, physically peeling off soft scale, biological slime, and thin, hard scale through squeezing, friction, and impact. However, in existing technologies, the rubber balls have a relatively high failure rate. This not only increases cleaning costs but also prolongs the cleaning operation time due to the need for repair and replacement, thus reducing the cleaning efficiency.

[0003] Therefore, how to reduce the probability of damage to rubber balls, thereby reducing cleaning costs and shortening the time spent on repairing and replacing rubber balls has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchanger ball cleaning system to reduce the probability of ball damage, thereby reducing cleaning costs and shortening the time spent on ball maintenance and replacement.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a heat exchanger ball cleaning system, the heat exchanger ball cleaning system comprising: A rubber ball is used to enter the space to be cleaned and clean the area to be cleaned. The rubber ball includes an isolation layer, a deformation layer and a cleaning layer arranged and connected sequentially from the inside out. The deformation layer is made of elastic material, and a portion of the cleaning layer can be in contact with the area to be cleaned. A traction rope assembly, comprising a traction rope passing through the isolation layer, with the isolation layer provided between the traction rope and the deformation layer, and rubber balls extending from both ends of the traction rope, and a limiting member provided on the traction rope for restricting the rubber balls on the traction rope; A drive unit is connected to both ends of the traction rope. The drive unit can alternately apply a first force and a second force to the traction rope. Under the first force, the rubber ball moves along a first direction of the space to be cleaned. Under the second force, the rubber ball moves along a second direction of the space to be cleaned. The first direction and the second direction are arranged opposite to each other.

[0006] The present invention achieves the following technical effects compared to the prior art: The heat exchanger ball cleaning system of this invention includes a ball, a traction rope assembly, and a drive unit. The ball is used to enter the space to be cleaned and clean the area to be cleaned. The ball includes an isolation layer, a deformation layer, and a cleaning layer arranged sequentially and connected from the inside out. The traction rope assembly includes a traction rope passing through the isolation layer, with the ball extending from both ends of the traction rope. The drive unit is connected to both ends of the traction rope. The drive unit can alternately apply a first force and a second force to the traction rope. Under the first force, the drive unit drives the ball to move along a first direction of the space to be cleaned through the traction rope. Under the second force, the drive unit drives the ball to move along a second direction of the space to be cleaned through the traction rope. The first direction and the second direction are arranged opposite to each other. The limiting device on the traction rope is used to restrict the rubber ball to the traction rope, which allows the rubber ball to move with the traction rope and ensures the smooth completion of the rubber ball cleaning operation. Because the deformation layer is made of elastic material, and at least part of the cleaning layer can abut against the area to be cleaned, this ensures that the cleaning layer can abut against the area to be cleaned, and the cleaning operation can be carried out smoothly. After the rubber ball is removed from the space to be cleaned, the rubber ball can return to its original shape under the elastic force of the deformation layer itself. This allows the rubber ball to be reused multiple times, thereby reducing the need for replacement or repair after a single cleaning operation due to the rubber ball being made of hard material. This reduces cleaning costs, shortens the downtime for rubber ball maintenance and replacement, and makes the heat exchanger rubber ball cleaning system have high cleaning efficiency. Furthermore, because there is an isolation layer between the traction rope and the deformation layer, in other words, the isolation layer separates the traction rope from the deformation layer. This ensures that the traction rope does not come into direct contact with the deformation layer during the cleaning process of the rubber ball. This reduces the possibility that the traction rope may easily get embedded in the deformation layer when the rubber ball enters the space to be cleaned or when the rubber ball turns, which would aggravate the damage to the deformation layer and cause premature damage to the deformation layer and the rubber ball. This further reduces the probability of rubber ball damage, lowers cleaning costs, and shortens the time spent on repairing and replacing rubber balls, making the heat exchanger rubber ball cleaning system have high cleaning efficiency. In summary, the heat exchanger ball cleaning system of this invention can reduce the probability of ball damage, thereby reducing cleaning costs and shortening the time spent on ball maintenance and replacement. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1This is a schematic diagram of a heat exchanger ball cleaning system. Figure 2 This is a cross-sectional view of the rubber ball; Figure 3 This is a schematic diagram of the structure of a rubber ball; Figure 4 This is a diagram illustrating the process of replacing the rubber ball. Figure 5 A schematic diagram illustrating the principle of simultaneously cleaning multiple spiral tubes; Figure 6 Design drawings for simultaneously cleaning multiple spiral pipes; Among them, 1. First outlet; 2. First inlet; 3. Second inlet; 4. Second outlet; 5. Shell; 6. Spiral tube; 7. First tee pipe; 8. Second tee pipe; 9. Traction rope; 10. First stuffing box; 10-1. End cap; 10-2. First stuffing layer; 11. Second stuffing box; 12. Rotary drive device; 13. First take-up and undo reel; 14. Second take-up and undo reel; 15. Shaft; 16. Bearing support; 17. Rubber ball; 17-1. Isolation layer; 17-2. Deformation layer; 17-3. Cleaning layer; 18. First position identification element; 19. First sensor. Detailed Implementation

[0009] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0010] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] like Figures 1-6 As shown, this invention discloses a heat exchanger ball cleaning system. The heat exchanger ball cleaning system includes a ball 17, a traction rope assembly, and a drive unit. The ball 17 is used to enter the space to be cleaned and clean the area to be cleaned. The ball 17 includes an isolation layer 17-1, a deformation layer 17-2, and a cleaning layer 17-3 arranged sequentially from the inside out and connected to each other. The traction rope assembly includes a traction rope 9 passing through the isolation layer 17-1, with the ball 17 extending from both ends of the traction rope 9. The drive unit is connected to both ends of the traction rope 9. The drive unit can alternately apply a first force and a second force to the traction rope 9. Under the first force, the drive unit drives the ball 17 to move along a first direction of the space to be cleaned through the traction rope 9. Under the second force, the drive unit drives the ball 17 to move along a second direction of the space to be cleaned through the traction rope 9. The first direction and the second direction are arranged opposite to each other. The limiting component on the traction rope 9 is used to restrict the rubber ball 17 to the traction rope 9, which allows the rubber ball 17 to move with the traction rope 9, ensuring the smooth completion of the cleaning operation of the rubber ball 17. Because the deformable layer 17-2 is made of elastic material, and at least a portion of the cleaning layer 17-3 can abut against the area to be cleaned, this ensures that the cleaning layer 17-3 can abut against the area to be cleaned, allowing the cleaning operation to proceed smoothly. Furthermore, after the rubber ball 17 is removed from the space to be cleaned, the rubber ball 17 can return to its original shape under the elastic force of the deformable layer 17-2 itself. This allows the rubber ball 17 to be reused multiple times, thereby reducing the need for replacement or repair after a single cleaning operation due to the rubber ball 17 being made of hard material. This reduces cleaning costs, shortens the downtime for maintenance and replacement of the rubber ball 17, and makes the heat exchanger rubber ball cleaning system have high cleaning efficiency. Furthermore, since an isolation layer 17-1 is provided between the traction rope 9 and the deformable layer 17-2, in other words, the isolation layer 17-1 separates the traction rope 9 from the deformable layer 17-2. This ensures that the traction rope 9 will not directly contact the deformable layer 17-2 during the cleaning operation of the rubber ball 17. This reduces the possibility that the traction rope 9 may easily embed into the deformable layer 17-2 when the rubber ball 17 enters the space to be cleaned or when the rubber ball 17 turns, which would aggravate the damage to the deformable layer 17-2 and cause premature damage to the deformable layer 17-2 and the rubber ball 17. This further reduces the probability of damage to the rubber ball 17, reduces cleaning costs, and shortens the time spent on repairing and replacing the rubber ball 17, making the heat exchanger rubber ball cleaning system have high cleaning efficiency. In summary, the heat exchanger ball cleaning system of the present invention can reduce the probability of damage to the balls 17, thereby reducing cleaning costs and shortening the time spent on maintenance and replacement of the balls 17.

[0012] The heat exchanger ball cleaning system of this invention is not limited to cleaning heat exchangers; it can also be used for cleaning municipal water supply and drainage pipelines, or oil and gas transmission pipelines, etc. The area to be cleaned is located within the space to be cleaned, and is part of that space. The space to be cleaned is used to feed the balls and traction ropes, and for moving the balls and ropes. The area to be cleaned is used for ball cleaning; for example, the interior of the heat exchanger is part of the space to be cleaned, and the inner wall of the heat exchanger is part of the area to be cleaned. The heat exchanger ball cleaning system of this invention mainly scrapes off dirt from the area to be cleaned through friction between the cleaning layer 17-3 and the area to be cleaned, as well as the squeezing and impact of the balls 17. The cleaning in the heat exchanger ball cleaning system refers to the ability to clean the tubular space such as the heat exchanger without shutting down the heat exchanger. The liquid inside the heat exchanger pipes, during its flow, acts as a flushing agent for the area to be cleaned, thus working together with the balls 17 to achieve the cleaning of the area.

[0013] like Figure 1 As shown, when the heat exchanger ball cleaning system is used to clean a spiral tube heat exchanger, the spiral tube heat exchanger includes a shell 5 and one or more sets of spirally wound tubes 6 located inside the shell 5. The shell 5 is provided with a first inlet 2 and a first outlet 1 communicating with the internal cavity of the shell 5. The spiral tube 6 is provided with a second inlet 3 and a second outlet 4 communicating with the internal cavity of the spiral tube 6. When the spiral tube heat exchanger is a sewage heat exchanger, the second inlet 3 is used to inject sewage with a certain amount of heat, and the first inlet 2 is used to inject clean water or other media to be heated. The inner diameter of the spiral tube 6 needs to be large enough to ensure that the wastewater can pass through the spiral tube 6 smoothly. The first inlet 2 is connected to the load equipment, such as the user end, and a circulation pump is provided on this pipeline. Similarly, the second inlet 3 is connected to the sewage source, which can be a factory that can generate sewage with a certain amount of heat. A transfer pump is provided on the connecting pipeline between the sewage source and the second inlet 3.

[0014] The shell 5 can be made of materials with certain corrosion resistance, such as galvanized steel sheet, and the spiral tube 6 can be made of materials such as stainless steel. Compared with the method where both the shell 5 and the spiral tube 6 are made of galvanized steel sheet or stainless steel, this gives the spiral tube heat exchanger certain corrosion resistance and lower overall cost.

[0015] When cleaning a spiral tube heat exchanger using the heat exchanger ball cleaning system of this invention, a portion of the traction rope 9 and the ball 17 need to be inserted into the spiral tube 6. When the spiral tube heat exchanger... Figure 1 When placed vertically as shown, the drive unit can use the traction rope 9 to drive the rubber ball 17 to reciprocate from top to bottom and from bottom to top inside the spiral tube 6, thereby scraping away the dirt inside the spiral tube 6 and cleaning the heat exchange surface to ensure efficient heat exchange. Furthermore, driven by the traction rope 9, even when the spiral tube heat exchanger is stopped or when wastewater is flowing at a low velocity inside the spiral tube 6, the hard scale inside the spiral tube 6 can be forcibly removed. By adjusting the operating speed of the drive unit, compared to injecting clean water into the spiral tube 6 for cleaning, the drive unit drives the rubber ball 17 to move through the spiral tube 6 in the first and second directions respectively, which takes less time and results in higher cleaning efficiency.

[0016] The first direction can be understood as the direction from the entrance to the exit of the space to be cleaned; the second direction can be understood as the direction from the exit to the entrance of the space to be cleaned. For example, when cleaning a spiral tube heat exchanger, the first direction is from the second inlet 3 to the second outlet 4, and the second direction is from the second outlet 4 to the second inlet 3.

[0017] The longitudinal section of the rubber ball 17 gradually narrows from both ends toward the middle region, and only the middle region of the cleaning layer 17-3 can contact the space to be cleaned. Compared with the method where the sides of the rubber ball 17 are all in contact with the space to be cleaned, this reduces the contact area between the rubber ball 17 and the space to be cleaned. In addition, the overall streamlined shape of the rubber ball 17 reduces the movement resistance of the rubber ball 17 in the space to be cleaned and reduces the jamming of the rubber ball 17 at the nozzle or at the abrupt change of curvature. Specifically, the rubber ball 17 can be a spindle shape or other shapes that are narrow at both ends and wide in the middle; or, if required by the working conditions, the rubber ball 17 can also be set as a sphere or other shapes, so that the contact area between the rubber ball 17 and the space to be cleaned is larger. When the heat exchanger ball cleaning system of this invention is used for cleaning the spiral tube 6 of a spiral tube heat exchanger or other spiral pipes, the cleaning layer 17-3 is provided with guide strips that rotate in the opposite direction to the spiral pipe. At this time, the traction rope 9 is rotatably connected to the isolation layer 17-1. When the traction rope 9 pulls the ball 17 to move, the tension applied by the traction rope 9 to the ball 17 will generate a force along the tangential direction of the ball 17, i.e., centrifugal force, which will then drive the ball 17 to rotate. This allows the ball 17 to rotate on its own as it moves with the traction rope 9. When the ball 17 is in an interference fit with the space to be cleaned, this not only makes the cleaning layer 17-3 wear evenly, but also uses centrifugal force to throw the scraped dirt away from the ball 17, achieving self-cleaning of the ball 17. At the same time, the groove formed between adjacent guide strips, i.e., the storage groove, can temporarily store the scraped particulate dirt, reducing the situation where the ball 17 is damaged or stuck due to particulate dirt getting stuck between the ball 17 and the space to be cleaned.

[0018] The isolation layer 17-1, also known as the isolation sleeve, can be made of wear-resistant polymer materials, such as ultra-high molecular weight polyethylene wear-resistant tubing, or polytetrafluoroethylene. The isolation layer 17-1 has through holes at both ends for the traction rope 9 to pass through, and both ends have smooth transition areas, such as tapered chamfers, to prevent damage to the traction rope 9 from the sharp edges of the isolation layer 17-1 when bending. The length of the isolation layer 17-1 must be no less than the length of the entire rubber ball 17 in the direction of movement to ensure that the isolation layer 17-1 can separate the traction rope 9 from the deformation layer 17-2. Surrounding the isolation layer 17-1, a deformable layer 17-2 made of polyurethane or other elastic material (the deformable layer 17-2 can be a highly elastic polyurethane sheet) is installed in the middle area of ​​the rubber ball 17. When the rubber ball 17 enters the space to be cleaned, the deformable layer 17-2 contracts under the compression of the space, causing a portion of the cleaning layer 17-3 to abut against the space to be cleaned, thus adhering tightly to the space and scraping away dirt. After exiting the space to be cleaned, the rubber ball 17... The original state is restored so that the cleaning layer 17-3 can wrap the isolation layer 17-1 and the deformation layer 17-2 to form a rubber ball 17. Depending on the needs, the cleaning layer 17-3 can be made of materials with different hardness: for example, when cleaning soft dirt, the cleaning layer 17-3 can be made of polyurethane microporous foam material; when cleaning hard dirt, the cleaning layer 17-3 can be made of wear-resistant rubber reinforced with silicon carbide particles. For easy replacement, the cleaning layer 17-3 and the deformation layer 17-2 can be detachably fixed by means of buckles or screws.

[0019] The fact that a portion of the cleaning layer 17-3 can contact the area to be cleaned means that, depending on the requirements, different areas of the cleaning layer 17-3 can contact the area to be cleaned. For example, when the rubber ball 17 is used for cleaning pipes such as the spiral tube 6, and the rubber ball 17 is interference-fitted with the pipe to be cleaned, a portion of the outer area of ​​the cleaning layer 17-3 distributed circumferentially can contact the pipe to be cleaned. However, when the pipe to be cleaned is larger than the outer diameter of the rubber ball 17, the position of the heat exchanger rubber ball cleaning system needs to be adjusted multiple times so that the upper, lower, left, and right sides of the pipe to be cleaned contact the rubber ball 17 respectively, thus achieving cleaning. In this case, the area where the side of the rubber ball 17 can contact the pipe to be cleaned is smaller in a single cleaning operation, allowing for non-stop online cleaning of the pipe. Guide wheels can be installed to guide the traction rope to areas outside the space to be cleaned.

[0020] Furthermore, the traction rope 9 includes a first traction section and a second traction section. The first traction section is inserted within the isolation layer 17-1, and both ends of the first traction section extend beyond the rubber ball 17 and are respectively connected to a second traction section (the first end of the first traction section is connected to one second traction section, and the second end of the first traction section is connected to another second traction section). The two ends of the second traction section are respectively connected to the first traction section and the drive unit for transmission. The first and second traction sections are rotatably connected in multiple directions. Because the first and second traction sections are rotatably connected in multiple directions, it facilitates the rotation of the rubber ball 17, which improves the smoothness of the rubber ball 17 and the traction rope 9 when passing through bending areas such as the spiral tube 6. The first and second traction sections can be rotatably connected in multiple directions using ball joints or Hooke hinges in the prior art. At this time, the limiting component includes a ball joint or Hooke hinge or other rotating structure that realizes the rotatable connection between the first traction section and the second traction section. The inner diameter of the ball joint or Hooke hinge or other rotating structure is smaller than the diameter of the through hole opened at both ends of the rubber ball 17 for the first traction section to pass through. This restricts the rubber ball 17 between the two rotating structures, ensuring that the rubber ball 17 can move with the traction rope 9. As needed, the distance between the two rotating structures can be designed in advance so that the two ends of the rubber ball 17 always abut against the two rotating structures, or so that there is a certain distance between the two ends of the rubber ball 17 and the two rotating structures. This distance cannot be too large, so as to avoid the rubber ball 17 not moving after the traction rope 9 moves too far relative to the rubber ball 17.

[0021] Alternatively, if required by the working conditions, the limiting component is used to fix the isolation layer 17-1 to the traction rope 9. In this case, the limiting component may include fastening structures such as adhesives or screws. In this case, the material used to prepare the traction rope 9 includes a flexible material so that the traction rope 9 has a certain degree of flexibility to allow the rubber ball 17 to rotate and turn in the bending area of ​​the spiral tube 6, etc.

[0022] The traction rope 9, the first traction section, and the second traction section can all be made of the same material. The traction rope 9 includes an inner core and an outer protective sleeve arranged sequentially from the inside out and connected together. The inner core can be made of high molecular weight polyethylene fiber or PE fiber to meet the requirements of high strength and corrosion resistance. The outer protective sleeve can be made of wear-resistant rubber or polytetrafluoroethylene and other wear-resistant materials, and has several grooves, such as spiral grooves or strip grooves, to reduce the contact area between the traction rope and the pipe wall, thereby reducing frictional resistance. By using the above materials, the traction rope 9 has high strength and a certain degree of corrosion resistance and wear resistance.

[0023] The traction rope 9 has a first position identification element 18 and a second position identification element at each end. The heat exchanger ball cleaning system includes a first sensor 19 located near the first end of the traction rope 9 and a second sensor located near the second end of the traction rope 9. The first sensor 19 is used to identify the first position identification element 18, and the second sensor is used to identify the second position identification element. The first sensor 19, the second sensor, and the drive unit are all connected to the controller. Based on the feedback from the first sensor 19 and the second sensor, the controller can adjust the drive unit, thereby adjusting the movement stroke of the ball 17 in the space to be cleaned and controlling the forward and reverse rotation of the rotary motor. A tension sensor can also be installed in the area where the traction rope 9 is always located in the space to be cleaned. The tension sensor is connected to the controller. When the tension exceeds a preset value, the controller controls the rotary motor to reverse to prevent the traction rope 9 from breaking.

[0024] Specifically, both the first position identification element 18 and the second position identification element are made of metal, and both the first sensor 19 and the second sensor are metal sensors, such as metal proximity switches. Alternatively, the first position identification element 18 or the second position identification element can be a reflective sheet, and the first sensor 19 or the second sensor can be a photoelectric proximity switch. Alternatively, the first position identification element 18 and the first sensor 19, the second position identification element and the second sensor can adopt other types of combination structures capable of identifying the position of the traction rope. The first sensor 19 and the second sensor can be set inside or outside the space to be cleaned, as needed.

[0025] The drive unit includes a first take-up / unwind reel 13 and a second take-up / unwind reel 14. The first take-up / unwind reel 13 is driven by a first drive member capable of bidirectional rotation, and the second take-up / unwind reel 14 is driven by a second drive member capable of bidirectional rotation. Alternatively, the first take-up / unwind reel 13 and the second take-up / unwind reel 14 are fixedly mounted on a rotating shaft 15. The first end of the rotating shaft 15 is driven by a third drive member capable of bidirectional rotation, and the second end of the rotating shaft 15 is rotatably connected to a bearing support 16, or bearing seat. During cleaning operations, a portion of the traction rope 9 is wound on both the first take-up / unwind reel 13 and the second take-up / unwind reel 14, and the rotation directions of the traction rope 9 on the first take-up / unwind reel 13 and the second take-up / unwind reel 14 are opposite. The first drive member, the second drive member, and the third drive member can specifically be a rotary drive device 12 capable of bidirectional rotation, such as a rotary motor or a hydraulic motor, or other drive structures that allow one end of the traction rope 9 to be wound up and the other end to be unwound. When the drive unit includes a first drive member and a second drive member, the first drive member rotates forward to unload the wire (for example, clockwise rotation), while the second drive member rotates in the opposite direction to retract the wire (for example, counterclockwise rotation). Conversely, when the first drive member rotates in the opposite direction, the second drive member rotates forward. The two work together to achieve the reciprocating movement of the rubber ball 17 within the cleaning space of the spiral tube 6, thus removing dirt. When the drive unit includes a third drive member, when the third drive member rotates forward (for example, clockwise rotation), the first take-up / unwind reel 13 retracts the wire, while the second take-up / unwind reel 14 unloads the wire. Conversely, when the third drive member rotates in the opposite direction (for example, counterclockwise rotation), the first take-up / unwind reel 13 unloads the wire, while the second take-up / unwind reel 14 retracts the wire. The first take-up / unwind reel 13 and the second take-up / unwind reel 14 can specifically be ring-shaped structures.

[0026] like Figure 5 As shown, multiple heat exchanger ball cleaning systems are set up, but only one drive unit is set up. Multiple take-up and untake-up rollers can be fixedly mounted on a rotating shaft 15 at the same time to achieve the effect of "one driving multiple", that is, one rotary motor drives multiple balls 17 to move in multiple spiral tubes 6 to achieve cleaning of multiple spiral tubes 6. When the internal stroke of the spiral tube 6 is the same (internal stroke refers to the distance traveled by the rubber ball 17 from the first packing box 10 to the second packing box 11), the diameters of the first take-up and untake-down reels 13 and the second take-up and untake-down reels 14 of each heat exchanger rubber ball cleaning system can be the same; when there are spiral tubes 6 with different strokes, the radial thickness of the first take-up and untake-down reels 13 and the second take-up and untake-down reels 14 of different heat exchanger rubber ball cleaning systems can be adjusted according to the stroke (the radial thickness of the first take-up and untake-down reels 13 and the second take-up and untake-down reels 14 of the same heat exchanger rubber ball cleaning system is the same, and the radial thickness can also be called the hub thickness, and the first take-up and untake-down reels 13 and the second take-up and untake-down reels 14 can also be called take-up and untake-down reels), so that the rubber ball can clean multiple spiral tubes 6 with different strokes at the same time.

[0027] like Figure 6As shown, the theory is as follows: Taking two spiral tubes with different internal strokes as an example, if the length traveled by the rubber ball 17 between the first stuffing box 10 and the second stuffing box 11 corresponding to one spiral tube 6 is measured to be L1, and the length corresponding to the other spiral tube 6 is L2, and the radial thickness of one of the first take-up and undo rollers 13 and the second take-up and undo rollers 14 is... If the radius of shaft 15 is R, and the number of rotations of shaft 15 is n, then we have (1) (2) Solve simultaneously to find the radial thickness of the other first take-up / untake-off spool 13 and the second take-up / untake-off spool 14. , Similarly, the radial thickness of the first take-up and untake-down shaft 13 and the second take-up and untake-down shaft 14 corresponding to the other spiral tubes 6 can be determined.

[0028] like Figure 1 As shown, the space to be cleaned has a second inlet 3 and a second outlet 4. A first packing layer 10-2 is provided at the second inlet 3, and a second packing layer is provided at the second outlet 4. The two ends of the traction rope 9 are respectively inserted into the first packing layer 10-2 and the second packing layer. The first packing layer 10-2 and the second packing layer provide a seal between the traction rope 9 and the equipment to be cleaned, thereby reducing the leakage of the medium inside the equipment to be cleaned. Existing packing materials are used for the first packing layer 10-2 and the second packing layer. The first packing layer 10-2 is located inside the first packing box 10, and the second packing layer is located inside the second packing box 11. Both the first packing box 10 and the second packing box 11 include a packing shell and an end cap 10-1 arranged sequentially from the shell 5 toward the first packing box 10. The packing shell can be welded to the shell 5, and the end cap 10-1 and the packing shell are threaded together, with the traction rope 9 inserted into the end cap 10-1.

[0029] And such as Figure 1As shown, when the heat exchanger ball cleaning system of this invention is used for cleaning tubular spaces such as spiral tube heat exchangers, the inlet of the first tee pipe 7 is connected to the second inlet 3, and the two outlets of the first tee pipe 7 are respectively connected to the spiral tube 6 and the first stuffing box 10. The inlet of the second tee pipe 8 is connected to the spiral tube 6, and the two outlets of the second tee pipe 8 are respectively connected to the second outlet 4 and the second stuffing box 11. As needed, the initial position of the ball 17, i.e., before the start of the cleaning operation, is completely located inside the first stuffing box 10, or partially located inside the first stuffing box 10 and partially located inside the right straight pipe of the first tee pipe 7. When the drive unit moves the rubber ball 17 along the first direction, for example, from top to bottom, based on the feedback from the first position identifier 18 and the first sensor 19, the second position identifier and the second sensor, when the rubber ball 17 moves to the second three-way pipe 8 of the second stuffing box 11, or the second stuffing box 11, the controller drives the rubber ball 17 to move along the second direction, for example, from bottom to top, until the rubber ball 17 returns to the right straight pipe of the first three-way pipe 7 of the first stuffing box 10. The drive unit can drive the rubber ball 17 to move alternately along the first and second directions to achieve reciprocating cleaning. Alternatively, if required by the working conditions, the controller, the first position identifier 18 and the first sensor 19, the second position identifier and the second sensor can be omitted, and the operator can periodically adjust the drive unit, for example, the forward and reverse rotation of the rotary motor, based on experience.

[0030] like Figure 4 As shown, the inner diameter of the first packing box 10 and the second packing box 11 is larger than the outer diameter of the rubber ball 17. When the rubber ball 17 needs to be replaced, the valve of the second inlet 3 can be closed, the first packing layer 10-2 can be removed, and the traction rope 9 can be manually pulled or the drive unit can be used to move the traction rope 9, so that the rubber ball 17 is pulled out of the first packing box 10 and replaced. After replacing the rubber ball 17, the traction rope 9 can be manually pulled or the drive unit can be used to move the traction rope 9, so that the rubber ball 17 is pulled into the first packing box 10, and then put back into the first packing layer 10-2 and tighten the end cap 10-1. Alternatively, the rubber ball 17 can also be replaced at the second packing box. For specific steps, refer to the method for replacing the rubber ball 17 at the first packing box 10.

[0031] In this document, "several" refers to at least one. "And / or" refers to text content preceding and / or following it, which can exist simultaneously or individually. For example, A and / or B includes either only A or B, or both A and B. This invention discloses multiple technical solutions, but does not provide any contrary technical teachings. Any content not covered in this invention is applicable to existing technologies.

[0032] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A heat exchanger ball cleaning system, characterized in that, The heat exchanger ball cleaning system includes: A rubber ball is used to enter the space to be cleaned and clean the area to be cleaned. The rubber ball includes an isolation layer, a deformation layer and a cleaning layer arranged and connected sequentially from the inside out. The deformation layer is made of elastic material, and a portion of the cleaning layer can be in contact with the area to be cleaned. A traction rope assembly, comprising a traction rope passing through the isolation layer, with the isolation layer provided between the traction rope and the deformation layer, and rubber balls extending from both ends of the traction rope, and a limiting member provided on the traction rope for restricting the rubber balls on the traction rope; A drive unit is connected to both ends of the traction rope. The drive unit can alternately apply a first force and a second force to the traction rope. Under the first force, the rubber ball moves along a first direction of the space to be cleaned. Under the second force, the rubber ball moves along a second direction of the space to be cleaned. The first direction and the second direction are arranged opposite to each other.

2. The heat exchanger ball cleaning system according to claim 1, characterized in that, The space to be cleaned is a tubular space.

3. The heat exchanger ball cleaning system according to claim 2, characterized in that, The space to be cleaned is a spiral pipe, the traction rope is rotatably connected to the isolation layer, and the cleaning layer is provided with guide strips that rotate in the opposite direction to the spiral pipe. A storage tank for temporarily storing dirt is formed between adjacent guide strips.

4. The heat exchanger ball cleaning system according to claim 1, characterized in that, The longitudinal section of the rubber ball gradually decreases from both ends toward the middle region of the rubber ball, and only the middle region of the cleaning layer can meet the space to be cleaned.

5. The heat exchanger ball cleaning system according to claim 1, characterized in that, The traction rope includes a first traction section and a second traction section. The first traction section is inserted inside the isolation layer. Both ends of the first traction section extend out of the rubber ball and are respectively connected to the second traction section. Both ends of the second traction section are respectively connected to the first traction section and the drive unit. The first traction section and the second traction section are rotatably connected in multiple directions. The first traction section or the second traction section is provided with two limiting members located outside the rubber ball and capable of abutting against both ends of the rubber ball; Alternatively, the limiting member is used to securely connect the isolation layer to the traction rope.

6. The heat exchanger ball cleaning system according to claim 1, characterized in that, The traction rope is provided with a first position identification element and a second position identification element at both ends. The heat exchanger ball cleaning system includes a first sensor located near the first end of the traction rope and a second sensor located near the second end of the traction rope. The first sensor is used to identify the first position identification element, and the second sensor is used to identify the second position identification element. The first sensor, the second sensor, and the drive unit are all connected to the controller signal.

7. The heat exchanger ball cleaning system according to claim 6, characterized in that, Both the first and second position identification components are made of metal, and both the first and second sensors are metal sensors.

8. The heat exchanger ball cleaning system according to claim 1, characterized in that, The drive unit includes a first take-up and undo spindle and a second take-up and undo spindle; The first take-up and untake-down shaft is connected to a first drive member capable of bidirectional rotation, and the second take-up and untake-down shaft is connected to a second drive member capable of bidirectional rotation. Alternatively, the first and second take-up and untake-down reels are fixedly sleeved on a rotating shaft, which is driven by a third driving component capable of bidirectional rotation. During cleaning operations, a portion of the traction rope is wound on both the first and second take-up and untake-down reels, and the rotation directions of the traction rope on the first and second take-up and untake-down reels are opposite.

9. The heat exchanger ball cleaning system according to claim 1, characterized in that, The material used to make the traction rope includes a flexible material; and / or, the cleaning layer and the deformable layer are detachably and fixedly connected; and / or, the two ends of the isolation layer are provided with smooth transition areas.

10. The heat exchanger ball cleaning system according to claim 1, characterized in that, The space to be cleaned has a second entrance and a second exit. The second entrance is provided with a first filler layer, and the second exit is provided with a second filler layer. The two ends of the traction rope are respectively inserted into the first filler layer and the second filler layer.

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