Heat exchange tube cleaning device

Abstract

The utility model belongs to the technical field of heat exchange tube cleaning, and discloses a heat exchange tube cleaning device. Comprising a condenser and a plurality of heat exchange tubes, and the heat exchange tubes are divided into two groups and are vertically arranged in the condenser. A cleaning device is installed on one side of the condenser and comprises an outer protection pipe, a butt joint pipe, a flow increasing device, an anti-skid inner ring, a check ring and a spiral cleaning component. The outer protection pipe is fixedly connected with one end of the condenser, the two flow increasing devices are located in the outer protection pipe, and the multiple butt joint pipes communicate with one sides of the two flow increasing devices. One ends of the butt joint pipes are in butt joint with the two sets of heat exchange pipes, and one ends of the two sets of heat exchange pipes are in a bent pipe shape to form circulating backflow. The check rings are located in the butt joint pipes, the anti-skid inner rings are located on the inner sides of the butt joint pipes, and the multiple spiral cleaning components are located in the butt joint pipes respectively. The cleaning efficiency of the heat exchange tube is improved, the whole heat exchange tube can be cleaned, and dirt accumulation in the heat exchange tube is prevented.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tube cleaning technology, specifically to a heat exchanger tube cleaning device. Background Technology

[0002] Condensers are important heat exchange equipment in industries such as chemical and power. The internal heat exchange tubes play a role in the heat exchange between steam and water. The condenser is affected by the quality of cooling water and circulating water, and scale will be generated inside the heat exchange tubes. This not only reduces the heat exchange effect and increases the energy consumption of the turbine or steam turbine, but also causes corrosion and leakage of the heat exchange tubes in severe cases, affecting the steam and water quality and operational safety of the unit.

[0003] Maintaining the cleanliness of the condenser heat exchange tubes is essential for ensuring the normal operation of the unit. Traditional online cleaning methods use rubber ball cleaning devices, which suffer from drawbacks such as a limited number of balls being added, low ball recovery rate, and reduced cooling water flow and heat exchange efficiency during ball recovery, and cannot achieve comprehensive cleaning. Utility Model Content

[0004] In view of the deficiencies in the prior art, this utility model provides a heat exchange tube cleaning device to improve the cleaning efficiency of heat exchange tubes, so that the entire heat exchange tube can be cleaned and to prevent the accumulation of dirt inside the heat exchange tubes.

[0005] A heat exchange tube cleaning device includes a condenser and heat exchange tubes, wherein there are multiple heat exchange tubes arranged vertically in two groups inside the condenser.

[0006] A cleaning device is installed on one side of the condenser. The cleaning device includes: an outer protective tube, a flow booster, a connecting tube, a spiral cleaning component, a retaining ring, and an anti-slip inner ring.

[0007] The outer protective tube is fixedly connected to one end of the condenser. Two flow boosting devices are located inside the outer protective tube. The two flow boosting devices are connected to the heat exchange tubes via connecting pipes. The heat exchange tubes are bent in the middle to form a reflux.

[0008] The retaining ring is located inside the connecting pipe and can block the spiral cleaning component. The anti-slip inner ring is located inside the connecting pipe, and the spiral cleaning component can move inside the connecting pipe.

[0009] Furthermore, the device also includes: the flow booster includes: a first water pump, a second water pump, an inlet pipe, a drain pipe, and a water storage tank. One end of the first water pump and the second water pump are each connected to a drain pipe. The two drain pipes pass through the outer protective pipe and are connected to the water storage tank. Each of the two water storage tanks is connected to an inlet pipe.

[0010] Furthermore, it also includes: the spiral cleaning component includes: a turbine, a spiral blade, a flow-breaking head, and a rotating shaft. The flow-breaking head has two pieces located at both ends of the rotating shaft, the turbine has two pieces fixedly connected to both ends of the rotating shaft, and the spiral blade is disposed on the outside of the rotating shaft.

[0011] Furthermore, the internal clamping device includes: both the rotating shaft and the spiral blade are made of flexible material.

[0012] Furthermore, one-way valves are connected to one side of both water inlet pipes.

[0013] Furthermore, locking elements are connected to both sides of the external clamping device, and bases are connected to both ends of the condenser.

[0014] As can be seen from the above technical solution, the heat exchange tube cleaning device provided by this utility model cleans the entire heat exchange tube, keeping the inner wall of the heat exchange tube clean; the heat exchange tube is connected by a connecting pipe, at which time the flow booster increases the flow of water in the heat exchange tube, causing the spiral cleaning component to flow from the connecting pipe into the heat exchange tube to clean the inner wall of the heat exchange tube; the spiral cleaning component enters the other end of the heat exchange tube by a first water pump, at which time the first water pump stops operating, and the second water pump is started to make the spiral cleaning component flow back in the heat exchange tube, thereby making the spiral cleaning component reciprocate to clean the heat exchange tube;

[0015] The flow booster device drives the water flow inside the heat exchange tube. At this time, the turbine rotates under force, which in turn drives the shaft and the spiral blades to rotate. The spiral blades rotate to clean the inner wall of the heat exchange tube. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a front view of a heat exchange tube cleaning device according to the present invention;

[0018] Figure 2 This is a partial view of the heat exchange tubes and other components in a heat exchange tube cleaning device according to this utility model;

[0019] Figure 3 This is a partial view of components such as the water storage tank in a heat exchanger tube cleaning device of this utility model;

[0020] Figure 4 This is an enlarged schematic diagram of point A in the heat exchanger tube cleaning device of this utility model.

[0021] Figure label:

[0022] 1. Condenser; 2. Cleaning device; 21. Outer protective pipe; 22. Flow booster; 221. First water pump; 222. Second water pump; 223. Drain pipe; 224. Water storage tank; 225. Inlet pipe; 23. Connecting pipe; 24. Spiral cleaning component; 241. Flow breaker head; 242. Turbine; 243. Spiral blade; 244. Shaft; 25. Retaining ring; 26. Anti-slip inner ring; 3. Check valve; 4. Heat exchange tube; 5. Base. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] like Figure 1-4 As shown, this embodiment provides a heat exchange tube cleaning device, including: a condenser 1 and heat exchange tubes 4. Both ends of the condenser 1 are connected to bases 5 for easy placement. Multiple heat exchange tubes 4 are arranged inside the condenser 1.

[0025] A cleaning device 2 for cleaning the heat exchange tubes 4 is installed on one side of the condenser 1. The cleaning device 2 includes: an outer protective tube 21, a connecting tube 23, a flow booster device 22, an anti-slip inner ring 26, a baffle ring 25, and a spiral cleaning component 24. The outer protective tube 21 is fixedly connected to one end of the condenser 1 by bolts. There are two flow boosters 22, both located inside the outer protective tube 21. The flow boosters 22 are used to circulate the water in the heat exchange tubes 4.

[0026] The connector 23 has multiple sections and is connected to one side of the two flow boosting devices 22. One end of each of the multiple connectors 23 is connected to one of the two sets of heat exchange tubes 4. Both ends of the multiple heat exchange tubes 4 are connected to the two flow boosting devices 22 via the connectors 23, allowing water to flow from the flow boosting devices 22 through the connectors 23 into the heat exchange tubes 4. The two sets of heat exchange tubes 4 are U-shaped tubes. The baffle ring 25 is located inside the connector 23 and is used to intercept the spiral cleaning component 24 to prevent it from entering the flow boosting device 22. The anti-slip inner ring 26 is located inside the connector 23. Multiple spiral cleaning components 24 are located within each connector 23, allowing each connector 23 to discharge the spiral cleaning component 24 into the heat exchange tube 4.

[0027] The flow booster device 22 includes: a first water pump 221, a second water pump 222, an inlet pipe 225, a drain pipe 223, and a water storage tank 224. Each of the first water pump 221 and the second water pump 222 is connected to a drain pipe 223 at one end, allowing water to flow into the water storage tank 224. The two drain pipes 223 pass through an outer protective pipe 21 and connect to the water storage tanks 224. Each of the two water storage tanks 224 is connected to an inlet pipe 225 on one side, allowing water to be added to the water storage tanks 224. A one-way valve 3 is connected to one side of each of the two inlet pipes 225 to prevent water in the water storage tanks 224 from being discharged through the inlet pipes 225.

[0028] The spiral cleaning component 24 includes: a turbine 242, a spiral blade 243, a flow-breaking head 241, and a rotating shaft 244. Two flow-breaking heads 241 are located at both ends of the rotating shaft 244, and the flow-breaking heads 241 are conical in shape to reduce water resistance. Two turbines 242 are fixedly connected to both ends of the rotating shaft 244, and the turbines 242 drive the rotating shaft 244 to rotate. The spiral blade 243 is fixedly connected to one side of the rotating shaft 244, and the rotating shaft 244 drives the spiral blade 243 to rotate. Both the rotating shaft 244 and the spiral blade 243 are made of flexible material, specifically graphene-filled special polymer material, using imported raw materials; the mechanical properties, chemical properties, and heat resistance of the material must meet the requirements for long-term use, with a tensile strength not less than 76 MPa, an IZOD impact strength not less than 32 kJ / m², and a heat distortion temperature not less than 80℃.

[0029] The method of using this utility model is as follows: When it is necessary to clean the condenser 1, the condenser 1 can be chemically cleaned first to meet the installation requirements of the cleaning device 2. At this time, the outer protective pipe 21 is connected to one end of the condenser 1 and fixed with bolts. At this time, the connecting pipe 23 is connected to one end of the heat exchange tube 4, and the anti-slip inner ring 26 is used to prevent water leakage at the connection between the connecting pipe 23 and the heat exchange tube 4. At this time, water is added to the inlet pipe 225. When the water reaches the cleaning requirements, the first water pump 221 is started. The water enters the water storage tank 224 through the drain pipe 223, and then enters the connecting pipe 23 from the water storage tank 224. At this time, the turbine 242 is subjected to force and rotates, which drives the rotating shaft 244 and the spiral blade 243 to rotate. The water flow drives the spiral blade 243 to rotate and move at the same time, thereby cleaning the inner wall of the heat exchange tube 4. When the spiral blades 243 enter the other end of the heat exchange tube 4, the first water pump 221 stops operating, and the second water pump 222 starts, causing the spiral blades 243 to rotate in the opposite direction and return to their initial position with the water. The condenser 1 needs to be shut down weekly to clean the heat exchange tubes 4 inside the condenser 1 using the cleaning device 2. During shutdown, the cleaning device 2 should be installed and circulated for approximately 30 minutes every Monday, Wednesday, and Friday to ensure the heat exchange tubes 4 are clean. When checking the operation of the cleaning device 2, remove it. If hard scale is found on the surface of the spiral blades 243, acid washing can be performed on the spiral blades 243 to maintain the normal operation of the cleaning device 2.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A heat exchanger tube cleaning device, characterized in that, include: A condenser (1) and heat exchange tubes (4), wherein the heat exchange tubes (4) are located inside the condenser (1); A cleaning device (2) is installed on one side of the condenser (1). The cleaning device (2) includes: an outer protective tube (21), a flow booster (22), a connecting tube (23), a spiral cleaning component (24), a retaining ring (25), and an anti-slip inner ring (26). The outer protective tube (21) is fixedly connected to one end of the condenser (1). There are two flow boosting devices (22) located inside the outer protective tube (21). The two flow boosting devices (22) are connected to the two ends of the heat exchange tube (4) through the connecting pipe (23). The retaining ring (25) is located inside the connecting pipe (23) and can block the spiral cleaning component (24). The anti-slip inner ring (26) is located inside the connecting pipe (23). The spiral cleaning component (24) can move inside the connecting pipe (23).

2. The heat exchange tube cleaning device according to claim 1, characterized in that, The flow booster device (22) includes: a first water pump (221), a second water pump (222), an inlet pipe (225), a drain pipe (223), and a water storage tank (224). One end of the first water pump (221) and the second water pump (222) are each connected to a drain pipe (223). The two drain pipes (223) pass through the outer protective pipe (21) and are connected to the water storage tank (224). Each of the two water storage tanks (224) is connected to an inlet pipe (225).

3. The heat exchanger tube cleaning device according to claim 1, characterized in that, The spiral cleaning component (24) includes: a turbine (242), a spiral blade (243), a flow-breaking head (241), and a rotating shaft (244). The flow-breaking head (241) has two pieces located at both ends of the rotating shaft (244). The turbine (242) has two pieces that are fixedly connected to both ends of the rotating shaft (244). The spiral blade (243) is located on the outside of the rotating shaft (244).

4. The heat exchanger tube cleaning device according to claim 3, characterized in that, Both the rotating shaft (244) and the spiral blade (243) are made of flexible material.

5. A heat exchange tube cleaning device according to claim 2, characterized in that, One-way valves (3) are connected to one side of each of the two water inlet pipes (225).

6. The heat exchanger tube cleaning device according to claim 1, characterized in that, The condenser (1) is connected to a base (5) at both ends.

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