Jet device for cleaning heat exchange tube of condenser
By designing a injection device for condenser heat exchange tubes, the problems of low cleaning efficiency and complex system in the prior art are solved, and efficient and uniform heat exchange tube cleaning is achieved.
Patent Information
- Application Number
- CN202323485721.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The existing condenser heat exchange tube cleaning technology is inefficient, and manual high-pressure water flushing depends on manpower. The rubber ball cleaning system has low ball collection rate, uneven cleaning and complex system.
A spray device for cleaning the condenser heat exchange tube is designed, including a mother tube and a nozzle assembly, the nozzle assembly is arranged in rows on the mother tube, and is moved parallel to the mother tube by a lead screw nut sub-drive device to achieve simultaneous cleaning of multiple heat exchange tubes.
It realizes efficient cleaning of the condenser heat exchange tube, even cleaning, high system stability, and improves the cleaning efficiency of the heat exchange tube.
Smart Images
Figure CN222544542U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spray device for cleaning a condenser heat exchange tube, belonging to the technical field of condenser cleaning. Background Art
[0002] The condenser is one of the important cold-end equipment in a thermal power plant. After a period of operation, dirt and microorganisms will adhere to the heat exchange tubes, causing shellfish growth and scale problems. Scaling of the condenser heat exchange tubes will cause a decrease in the cleanliness factor, poor heat exchange efficiency, increased turbine heat consumption, and increased water resistance of the circulating water. Therefore, improving and maintaining the cleanliness of the condenser heat exchange tubes is very important for the safe and economical operation of the generator set.
[0003] At present, the condenser heat exchange tubes are generally cleaned by manual high-pressure water flushing, which mainly relies on manpower and has low cleaning efficiency. In addition, some power plants use a rubber ball cleaning system to clean the heat exchange tubes. A certain proportion of rubber balls are placed in the circulating water, so that the rubber balls enter the heat exchange tubes with the circulating water and use friction to clean the tube walls. The rubber ball cleaning system can moderately clean the inner wall of the heat exchange tube, but there are problems such as low ball collection rate, uneven cleaning, and complex system.
[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention
[0005] The purpose of the utility model is to address the deficiencies of the prior art and to provide a spray device for cleaning condenser heat exchange tubes, which can clean multiple heat exchange tubes at the same time, has high cleaning efficiency, uniform cleaning, and high system stability.
[0006] In order to achieve the above-mentioned purpose, the technical solution of the spray device for cleaning the condenser heat exchange tube provided by the utility model is:
[0007] A spray device for cleaning condenser heat exchange tubes comprises a main tube and a nozzle assembly arranged on the main tube, a water inlet port is arranged on the main tube, the main tube is in an "I" shape and has a plurality of nozzle mounting holes for mounting the nozzle assembly, the nozzle mounting holes are arranged in rows along the "I"-shaped extension direction of the main tube, the distance between two adjacent nozzle mounting holes in each row is equal to the distance between two adjacent nozzle mounting holes in each row of condenser heat exchange tubes, the nozzle assembly comprises a nozzle joint and a nozzle, one end of the nozzle joint is fixedly connected to the nozzle mounting hole, and the other end is connected to the nozzle, the nozzle joint and the nozzle are both provided with through holes, and the cleaning liquid entering the main tube from the water inlet port can only be sprayed out from the through holes.
[0008] Furthermore, the nozzle mounting holes are arranged in two rows, and the two rows of nozzle mounting holes are staggered. Another row of nozzle mounting holes is arranged on the perpendicular midline of two adjacent nozzle mounting holes in each row, and the center line of the three nozzle mounting holes forms an equilateral triangle similar to the center line of the corresponding three condenser heat exchange tubes.
[0009] Furthermore, a nut is provided on the mother tube, and the nut and the matching screw form a screw nut pair to drive the injection device for cleaning the condenser heat exchange tubes to move in a direction parallel to the screw. When the injection device for cleaning the condenser heat exchange tubes moves in parallel in an even number of rows, the two rows of nozzles correspond one by one to the centers of the two rows of heat exchange tubes of the condenser.
[0010] Furthermore, the aperture of the nozzle through hole is not larger than the aperture of the nozzle joint through hole.
[0011] Furthermore, the aperture of the nozzle through hole is stepped, so that the nozzle through hole has a large diameter section and a small diameter section, a cone is formed between the large diameter section and the small diameter section, and the small diameter section is close to the condenser heat exchange tube.
[0012] Furthermore, the nozzle connector is connected to the nozzle via threads.
[0013] Furthermore, the water inlet port is located in the middle of the water spraying main pipe.
[0014] Furthermore, the mother tube is arranged in sections, and the middle diameter of the mother tube is larger than the diameters at both ends.
[0015] Furthermore, there are two water inlet ports, which are respectively located at two ends of the mother pipe, and the two water inlet ports are connected.
[0016] Furthermore, the water inlet port is connected with a flange.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] The spray device for cleaning the condenser heat exchange tubes provided by the utility model arranges a plurality of nozzle assemblies arranged corresponding to the condenser heat exchange tubes in a row on the main tube, and sprays the cleaning liquid supplied by the external equipment from the nozzles through the main tube, so as to realize the cleaning of the whole row of heat exchange tubes at the same time.
[0019] Two rows of nozzles arranged in an equilateral triangle are provided on the mother tube, so that the nozzles can be accurately positioned with respect to the two rows of heat exchange tubes at the same time, thereby improving the cleaning efficiency of the heat exchange tubes.
[0020] A screw nut is arranged on the mother tube, and the screw nut and the screw matched therewith form a screw nut pair to drive the spray device for cleaning the condenser heat exchange tube to move in a direction parallel to the screw. When the spray device for cleaning the condenser heat exchange tube moves in parallel with an even number of rows, the two rows of nozzles correspond to the centers of the two rows of heat exchange tubes of the condenser one by one, thereby realizing row-by-row cleaning of the condenser heat exchange tubes. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the spray device for cleaning the condenser heat exchange tube in the utility model;
[0022] Figure 2 It is a schematic structural diagram of the heat exchange tube cleaned in the specific embodiment 1 of the spray device for cleaning the condenser heat exchange tube of the utility model;
[0023] Figure 3 It is a structural schematic diagram of the nozzle installation hole in the specific embodiment 1 of the spray device for cleaning the condenser heat exchange tube of the utility model;
[0024] Figure 4 yes Figure 1 A top view of a spray device for cleaning condenser heat exchange tubes;
[0025] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle nozzle;
[0026] Figure 6 yes Figure 4 Schematic diagram of the structure of the middle nozzle joint;
[0027] In the figure: 1. main pipe; 11. water inlet port; 12. nozzle mounting hole; 13. flange; 2. nozzle assembly; 3. heat exchange tube; 4. nozzle; 41. nozzle through hole; 42. large diameter section; 43. small diameter section; 44. conical surface; 5. nut; 6. lead screw; 7. nozzle joint; 71. nozzle joint through hole. Implementation
[0028] The technical solution of the utility model is further described in detail below through specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.
[0029] Specific embodiment 1 of the spray device for cleaning the condenser heat exchange tube provided by the utility model:
[0030] like Figure 1-6As shown, a spray device for cleaning condenser heat exchange tubes includes a main tube 1 for supplying cleaning liquid and a nozzle assembly 2 arranged on the main tube 1, a water inlet port 11 is arranged on the main tube 1, and a connecting flange 13 is arranged on the water inlet port 11 to facilitate the connection between the main tube 1 and an external cleaning liquid delivery pipeline; at the same time, the main tube 1 is in an "I" shape and has a plurality of nozzle mounting holes 12 for mounting the nozzle assembly 2, the nozzle mounting holes 12 are arranged in rows along the "I"-shaped extension direction of the main tube 1, and the distance between two adjacent nozzle mounting holes 12 in each row is equal to the distance between two adjacent nozzle mounting holes 12 in each row of condenser heat exchange tubes 3.
[0031] In order to improve the cleaning efficiency of the heat exchange tubes 3, in this embodiment, the nozzle mounting holes 12 are arranged in two rows. The nozzle mounting holes 12 are arranged in rows corresponding to the condenser heat exchange tubes 3. In this embodiment, the condenser heat exchange tubes 3 to be cleaned are arranged in two adjacent rows, and the center lines of three adjacent heat exchange tubes 3 in the two adjacent rows form an equilateral triangle.
[0032] Therefore, correspondingly, Figure 3 As shown, two rows of nozzle mounting holes 12 are staggered, and another row of nozzle mounting holes 12 is arranged on the perpendicular midline between two adjacent rows of nozzle mounting holes 12, and the center line connecting the three nozzle mounting holes 12 forms an equilateral triangle.
[0033] The nozzle assembly 2 includes a nozzle joint 7 and a nozzle 4. One end of the nozzle joint 7 is fixedly connected to the nozzle mounting hole 12, and the other end is connected to the nozzle 4 through a thread. The nozzle joint 7 and the nozzle 4 are both provided with through holes, and the cleaning liquid entering the mother pipe 1 from the water inlet port 11 can only be sprayed out from the through holes. In this embodiment, Figure 1 As shown, the water inlet port 11 is arranged in the middle of the mother pipe 1, and both ends of the mother pipe 1 are sealed to prevent the cleaning liquid from flowing out from both ends of the mother pipe 1. In order to balance the pressure of the nozzles 4 at both ends of the mother pipe 1 with the nozzles 4 in the middle, so as to clean the heat exchange tubes 3 evenly, the mother pipe 1 is arranged in sections, and the diameter of the middle pipe is larger than the diameter of the pipes at both ends.
[0034] Since the heat exchange tube 3 has a small diameter and a long length, in order to avoid that only one end of the heat exchange tube 3 is effectively cleaned, the cleaning liquid needs to be sprayed out from the nozzle 4 in a columnar shape. Therefore, the diameter of the nozzle through hole 41 is not larger than the diameter of the nozzle joint through hole 71. In this embodiment, the diameter of the nozzle through hole 41 is equal to the diameter of the nozzle joint through hole 71. Figure 5 As shown, in order to increase the injection pressure of the cleaning liquid, the aperture of the nozzle through hole 41 is set to be stepped, so that the nozzle through hole 41 has a large diameter section 42 and a small diameter section 43, and a conical surface 44 is formed between the large diameter section 42 and the small diameter section 43, so that the cleaning liquid is pressurized in the nozzle 4 and then sprayed toward the heat exchange tube 3, thereby improving the cleaning effect on the heat exchange tube 3.
[0035] A nut 5 is provided on the mother tube 1, and the nut 5 and the screw 6 matched therewith form a screw nut pair to drive the injection device for cleaning the condenser heat exchange tube to move in a direction parallel to the screw 6. When the injection device for cleaning the condenser heat exchange tube moves in parallel in an even number of rows, the two rows of nozzles correspond one by one to the centers of the two rows of heat exchange tubes of the condenser, thereby realizing row-by-row cleaning of the condenser heat exchange tubes 3.
[0036] The working principle of the spray device for cleaning the condenser heat exchange tube is as follows: high-pressure cleaning liquid is supplied into the mother tube 1 from the water inlet port 11. Since both ends of the mother tube 1 are sealed, the cleaning liquid can only be sprayed out from the nozzle 4 that is connected to the mother tube 1. At the same time, the position of the nozzle 4 is arranged corresponding to the heat exchange tube 3, and then the cleaning liquid sprayed from the nozzle 4 enters the heat exchange tube 3 to achieve the cleaning of the entire row of heat exchange tubes 3. After the cleaning of the row of heat exchange tubes 3 is completed, the spray device for cleaning the condenser heat exchange tube is driven by the screw nut pair to translate the even-numbered rows in a direction parallel to the screw 6, thereby achieving the cleaning of the condenser heat exchange tubes 3 row by row.
[0037] Specific embodiment 2 of the injection device for cleaning condenser heat exchange tubes provided by the utility model: the difference between this embodiment and embodiment 1 is that the number of rows of nozzle mounting holes is different. Specifically, the number of rows of nozzle mounting holes on the mother tube is one row or three rows.
[0038] Specific embodiment 3 of the injection device for cleaning the condenser heat exchange tube provided by the utility model: The difference between this embodiment and embodiment 1 is that the setting method between the aperture of the nozzle through hole and the aperture of the nozzle joint through hole is different. Specifically, the aperture of the nozzle through hole is larger than the aperture of the nozzle joint through hole. At this time, the injection device for cleaning the condenser heat exchange tube is suitable for cleaning larger surfaces.
[0039] Specific embodiment 4 of the injection device for cleaning condenser heat exchange tubes provided by the utility model: the difference between this embodiment and embodiment 1 is that the connection method between the water inlet port and the external cleaning liquid delivery pipeline is different. Specifically, the water inlet port and the external cleaning liquid delivery pipeline are connected by threaded connection or direct welding.
[0040] Specific embodiment 5 of the injection device for cleaning the condenser heat exchange tube provided by the utility model: the difference between this embodiment and embodiment 1 is that the structure of the mother tube is different. Specifically, the mother tube is a whole section structure with equal diameter.
[0041] Specific embodiment 6 of the injection device for cleaning condenser heat exchange tubes provided by the utility model: the difference between this embodiment and embodiment 1 is that the connection method between the nozzle joint and the nozzle is different. Specifically, the nozzle joint and the nozzle are fixed by welding.
[0042] Specific embodiment 7 of the injection device for cleaning condenser heat exchange tubes provided by the utility model: The difference between this embodiment and embodiment 1 is that the number of water inlet ports is different. Specifically, the water inlet ports are set to two, three or more, and each water inlet port is connected to an external cleaning liquid delivery pipeline.
[0043] Specific embodiment 8 of the injection device for cleaning the condenser heat exchange tube provided by the utility model: the difference between this embodiment and embodiment 1 is that the arrangement position of the water inlet port is different. Specifically, there are two water inlet ports and they are respectively located at the two ends of the mother pipe, and the two water inlet ports are connected.
[0044] Specific embodiment 9 of the injection device for cleaning the condenser heat exchange tube provided by the utility model: the difference between this embodiment and embodiment 1 is that the structure of the nozzle is different, specifically, the nozzle through hole is a through hole of equal diameter.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.
Claims
1. A spray device for cleaning condenser heat exchange tubes, characterized in that: It includes a mother pipe and a nozzle assembly arranged on the mother pipe, a water inlet port is arranged on the mother pipe, the mother pipe is in an "I" shape and has a plurality of nozzle mounting holes for mounting the nozzle assembly, the nozzle mounting holes are arranged in rows along the "I"-shaped extension direction of the mother pipe, the distance between two adjacent nozzle mounting holes in each row is equal to the distance between two adjacent nozzle mounting holes in each row of condenser heat exchange tubes, the nozzle assembly includes a nozzle joint and a nozzle, one end of the nozzle joint is fixedly connected to the nozzle mounting hole, and the other end is connected to the nozzle, the nozzle joint and the nozzle are both provided with through holes, and the cleaning liquid entering the mother pipe from the water inlet port can only be sprayed out from the through holes.
2. The spray device for cleaning condenser heat exchange tubes according to claim 1, characterized in that: The nozzle mounting holes are arranged in two rows, and the two rows of nozzle mounting holes are staggered. Another row of nozzle mounting holes is arranged on the perpendicular midline of two adjacent nozzle mounting holes in each row, and the center line of the three nozzle mounting holes forms an equilateral triangle similar to the center line of the corresponding three condenser heat exchange tubes.
3. The spraying device for cleaning condenser heat exchange tubes according to claim 2, characterized in that: A nut is provided on the mother tube, and the nut and the screw matching therewith form a screw nut pair to drive the injection device for cleaning the condenser heat exchange tubes to move in a direction parallel to the screw. When the injection device for cleaning the condenser heat exchange tubes moves in parallel in an even number of rows, the two rows of nozzles correspond one by one to the centers of the two rows of heat exchange tubes of the condenser.
4. The spray device for cleaning condenser heat exchange tubes according to any one of claims 1 to 3, characterized in that: The nozzle joint is provided with a nozzle joint through hole, and the nozzle is provided with a nozzle through hole, and the aperture of the nozzle through hole is not greater than the aperture of the nozzle joint through hole.
5. The spraying device for cleaning condenser heat exchange tubes according to claim 4, characterized in that: The aperture of the nozzle through hole is stepped, so that the nozzle through hole has a large diameter section and a small diameter section, a cone is formed between the large diameter section and the small diameter section, and the small diameter section is close to the condenser heat exchange tube.
6. The spray device for cleaning condenser heat exchange tubes according to any one of claims 1 to 3, characterized in that: The nozzle joint is connected to the nozzle via threads.
7. The spray device for cleaning condenser heat exchange tubes according to any one of claims 1 to 3, characterized in that: The water inlet port is located in the middle of the main pipe.
8. The spraying device for cleaning condenser heat exchange tubes according to claim 7, characterized in that: The mother pipe is arranged in sections, and the middle diameter of the mother pipe is larger than the diameters at both ends.
9. The spray device for cleaning condenser heat exchange tubes according to any one of claims 1 to 3, characterized in that: There are two water inlet ports, which are respectively located at two ends of the mother pipe, and the two water inlet ports are connected.
10. The spray device for cleaning condenser heat exchange tubes according to any one of claims 1 to 3, characterized in that: The water inlet port is connected with a flange.