U-shaped circulating heat exchanger with bent pipe cleaning function

Abstract

The utility model relates to the technical field of u-shaped circulating heat exchangers, and discloses a u-shaped circulating heat exchanger with a bent pipe cleaning function, which comprises a shell, a fixed disc is sleeved on one side of the shell, a plurality of groups of U-shaped heat exchange pipes are sleeved in the fixed disc, the top of one end of each U-shaped heat exchange pipe is fixedly connected with a support pipe, and the support pipe is fixedly connected with the other end of the U-shaped heat exchange pipe. The bottom of the supporting pipe is sleeved with a high-pressure spray head, the top of the supporting pipe is connected with a communicating pipe in a penetrating mode, the top of the communicating pipe is connected with a conveying assembly in a penetrating mode, the surface of the shell is connected with a pressure relief pipe in a penetrating mode, and a positioning piece is sleeved with the pressure relief pipe. According to the u-shaped circulating heat exchanger with the bent pipe cleaning function, through the arrangement of the conveying assembly, the supporting pipe and the high-pressure spray head, the effect of cleaning the bent pipe area is achieved, dirt or other impurities are prevented from being accumulated in the bent pipe area, the heat exchange efficiency is prevented from being affected, and meanwhile the operation and maintenance cost caused by inconvenient cleaning and maintenance is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of U-shaped circulating heat exchangers, and in particular to a U-shaped circulating heat exchanger with a bent tube cleaning function. Background Technology

[0002] A U-shaped circulating heat exchanger is a type of shell-and-tube heat exchanger characterized by its U-shaped heat exchange tubes, with both ends fixed to the same tube sheet. A U-shaped circulating heat exchanger with a bend-tube cleaning function is typically based on the traditional U-shaped heat exchanger design, adding the ability to clean the inner wall of the bend. This is primarily to address the problem of dirt, scale, or other impurities easily accumulating in the bend area, thereby improving heat exchange efficiency, extending equipment lifespan, and reducing operating and maintenance costs caused by inconvenient cleaning and maintenance.

[0003] Existing U-shaped circulating heat exchangers with bend cleaning functions are not convenient for cleaning the bend area in actual use, which makes it easy for dirt or other impurities to accumulate in the bend area, affecting heat exchange efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a U-shaped circulating heat exchanger with a bend cleaning function, so as to solve the problem mentioned in the background art that it is not easy to clean the bend area, which leads to the accumulation of dirt or other impurities in the bend area and affects the heat exchange efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A U-shaped circulating heat exchanger with a bent-tube cleaning function includes a shell, a fixed plate sleeved on one side of the shell, several sets of U-shaped heat exchange tubes sleeved inside the fixed plate, a support tube fixedly connected to the top of one end of each U-shaped heat exchange tube, a high-pressure nozzle sleeved at the bottom of the support tube, a connecting pipe extending through the top of the support tube, a conveying assembly extending through the top of the connecting pipe, a pressure relief pipe extending through the surface of the shell, a positioning plate sleeved inside the pressure relief pipe, a telescopic assembly fixedly connected to the top of the positioning plate, the conveying assembly including a connecting pipe extending through the top of the connecting pipe, a conveying pump extending through one end of the connecting pipe, and a water tank extending through the input end of the conveying pump; the telescopic assembly includes a support spring fixedly connected to the top of the positioning plate, a piston fixedly connected to the top of the support spring, and a sliding rod fixedly connected to the bottom of the piston.

[0008] As a further embodiment of this utility model, the bottom of the U-shaped heat exchange tube is connected to an inclined tube, and the bottom of the inclined tube is threaded with a threaded cap. The threaded cap facilitates the opening of the inclined tube.

[0009] As a further embodiment of this utility model, flanges are fixedly connected to both ends of the outer shell, and a rear end cover is threadedly connected to one side of one set of flanges. The rear end cover serves to facilitate opening and cleaning.

[0010] As a further embodiment of this utility model, another set of flanges has a front end cover threadedly connected to one side. The top and bottom of the front end cover are both connected to an A injection pipe, which facilitates the injection of liquid A.

[0011] As a further embodiment of this utility model, the top and bottom of the outer shell are both connected through injection pipe B, and the surface of the positioning plate is provided with two sets of through holes, which facilitate the passage of water pressure.

[0012] As a further embodiment of this utility model, two sets of support frames are fixedly connected to the bottom of the outer shell, and a base plate is fixedly connected to the bottom of the support frame. The base plate increases the stability of the support frame.

[0013] As a further embodiment of this invention, a sealing ring is fitted onto the surface of the piston. The sealing ring is made of rubber, and its installation enhances the sealing performance.

[0014] (III) Beneficial Effects

[0015] This utility model provides a U-shaped circulating heat exchanger with a bent-tube cleaning function, which has the following features:

[0016] Beneficial effects:

[0017] 1. This U-shaped circulating heat exchanger with a bend cleaning function, through the arrangement of the delivery component, support pipe, and high-pressure nozzle, activates the delivery pump when the bend area of ​​the U-shaped heat exchange tube needs cleaning. The delivery pump draws the cleaning solution from inside the water tank, which is then delivered to the support pipe through the connecting pipe. The cleaning solution is then sprayed out from the high-pressure nozzle inside the support pipe, impacting the bend of the U-shaped heat exchange tube and washing away scale or other impurities. The scale or other impurities then fall down the pipe to the inclined pipe for easy periodic cleaning. This effectively cleans the bend area, preventing the accumulation of dirt or other impurities in the bend area, which would affect heat exchange efficiency, and reducing the operation and maintenance costs caused by inconvenient cleaning and maintenance.

[0018] 2. This U-shaped circulating heat exchanger with a bent-tube cleaning function, through the setting of the telescopic component, allows water pressure to pass through the through hole on the positioning plate during use, thereby squeezing the piston and causing it to slide inside the pressure relief pipe. The support spring is stretched under force, and the sliding rod slides in the sliding hole on the positioning plate to maintain stability. Then the piston slides to the cavity inside the pressure relief pipe, and the excess water pressure is discharged through the gap. When the pressure stabilizes, the support spring pulls the piston to re-block the pressure relief pipe, thereby achieving the effect of discharging excess water pressure. This avoids pipe rupture or joint leakage caused by excessive water pressure, improving the service life and safety of the U-shaped circulating heat exchanger. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the conveying assembly, support pipe, and high-pressure nozzle structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the telescopic component structure of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Fixed plate; 3. U-shaped heat exchange tube; 4. Support tube; 5. High-pressure nozzle; 6. Connecting tube; 7. Conveying assembly; 701. Connecting tube; 702. Conveying pump; 703. Water tank; 8. Pressure relief tube; 9. Positioning plate; 10. Telescopic assembly; 1001. Support spring; 1002. Piston; 1003. Sliding rod; 11. Inclined tube; 12. Threaded cap; 13. Flange; 14. Rear end cover; 15. Front end cover; 16. Injection tube A; 17. Injection tube B; 18. Support frame; 19. Base plate; 20. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1 to 4This utility model provides a technical solution: a U-shaped circulating heat exchanger with a bent tube cleaning function, including a shell 1, a fixing plate 2 sleeved on one side of the shell 1, several sets of U-shaped heat exchange tubes 3 sleeved inside the fixing plate 2, a support pipe 4 fixedly connected to the top of one end of the U-shaped heat exchange tubes 3, a high-pressure nozzle 5 sleeved at the bottom of the support pipe 4, a connecting pipe 6 connected through the top of the support pipe 4, and a conveying assembly 7 connected through the top of the connecting pipe 6. Through the arrangement of the conveying assembly 7, the support pipe 4, and the high-pressure nozzle 5, the bent tube area is cleaned, preventing the accumulation of dirt or other impurities in the bent tube area, which would affect the heat exchange efficiency. It also reduces the operation and maintenance costs caused by inconvenient cleaning and maintenance. A pressure relief pipe 8 is connected through the surface of the shell 1. The pressure relief pipe 8 has a positioning plate 9 inside, and the top of the positioning plate 9 is fixedly connected to a telescopic component 10. The telescopic component 10 is used to discharge excess water pressure, which can prevent the pipe from breaking or the joint from leaking due to excessive water pressure. This improves the service life and safety of the U-shaped circulating heat exchanger. The conveying component 7 includes a connecting pipe 701 that is connected to the top of the connecting pipe 6. One end of the connecting pipe 701 is connected to a conveying pump 702, and the input end of the conveying pump 702 is connected to a water tank 703. The telescopic component 10 includes a support spring 1001 that is fixedly connected to the top of the positioning plate 9. The top of the support spring 1001 is fixedly connected to a piston 1002, and the bottom of the piston 1002 is fixedly connected to a sliding rod 1003.

[0026] The bottom of the U-shaped heat exchange tube 3 is connected to an inclined tube 11, and the bottom of the inclined tube 11 is threadedly connected to a threaded cap 12. The threaded cap 12 facilitates the opening of the inclined tube 11.

[0027] Both ends of the outer casing 1 are fixedly connected to flanges 13. One side of one set of flanges 13 is threadedly connected to a rear end cover 14. The rear end cover 14 serves to open and clean the casing.

[0028] Another set of flanges 13 has a front cover 15 threadedly connected to one side. The top and bottom of the front cover 15 are both connected to an A injection pipe 16, which facilitates the injection of liquid A.

[0029] The top and bottom of the outer casing 1 are both connected to the B injection pipe 17. The surface of the positioning piece 9 is provided with two sets of through holes, which facilitate the passage of water pressure.

[0030] Two sets of support frames 18 are fixedly connected to the bottom of the outer casing 1. A base plate 19 is fixedly connected to the bottom of the support frame 18. The base plate 19 increases the stability of the support frame 18.

[0031] A sealing ring 20 is fitted onto the surface of the piston 1002. The sealing ring 20 is made of rubber and serves to increase the sealing performance.

[0032] In this invention, the working steps of the device are as follows:

[0033] First step: When the bend area of ​​the U-shaped heat exchange tube 3 needs to be cleaned, start the delivery pump 702. Use the delivery pump 702 to draw out the cleaning fluid inside the water tank 703, and then deliver it through the connecting pipe 701 to the support pipe 4. The cleaning fluid is sprayed out from the high-pressure nozzle 5 inside the support pipe 4 to impact the bend of the U-shaped heat exchange tube 3, washing away scale or other impurities, and letting it fall down the pipe to the inclined pipe 11 for easy regular cleaning.

[0034] Second step: When the internal pressure of the outer shell 1 is too high during use, the water pressure passes through the through hole on the positioning plate 9 and squeezes the piston 1002, causing the piston 1002 to slide in the pressure relief pipe 8, and the support spring 1001 to be deformed and stretched by force.

[0035] Third step: The sliding rod 1003 slides in the sliding hole on the positioning plate 9 to maintain stability, and then the piston 1002 slides to the cavity in the pressure relief pipe 8. Excess water pressure is discharged through the gap. When the pressure is stable, the support spring 1001 pulls the piston 1002 to re-block the pressure relief pipe 8.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A u-shaped heat exchanger with bend cleaning function, comprising a shell (1), characterized in that: The side of the shell (1) is sleeved with a fixed disc (2), the inside of the fixed disc (2) is sleeved with a plurality of groups of U-shaped heat exchange pipes (3), the top of one end of the U-shaped heat exchange pipe (3) is fixedly connected with a supporting pipe (4), the bottom of the supporting pipe (4) is sleeved with a high-pressure nozzle (5), the top of the supporting pipe (4) is throughly connected with a communication pipe (6), the top of the communication pipe (6) is throughly connected with a conveying assembly (7), the surface of the shell (1) is throughly connected with a pressure relief pipe (8), the inside of the pressure relief pipe (8) is sleeved with a positioning sheet (9), the top of the positioning sheet (9) is fixedly connected with a telescopic assembly (10), The conveying assembly (7) includes a connecting pipe (701) throughly connected with the top of the communication pipe (6), one end of the connecting pipe (701) is throughly connected with a conveying pump (702), the input end of the conveying pump (702) is throughly connected with a water tank (703); The telescopic assembly (10) includes a supporting spring (1001) fixedly connected with the top of the positioning sheet (9), the top of the supporting spring (1001) is fixedly connected with a piston (1002), the bottom of the piston (1002) is fixedly connected with a sliding rod (1003).

2. The u-shaped heat exchanger with bend cleaning function according to claim 1, characterized in that: The bottom of the U-shaped heat exchange pipe (3) is throughly connected with an inclined pipe (11), the bottom of the inclined pipe (11) is threadedly connected with a threaded cap (12).

3. The u-tube heat exchanger with bend cleaning function according to claim 1, characterized in that: Both ends of the shell (1) are fixedly connected with flange plates (13), one side of one group of the flange plates (13) is threadedly connected with a rear end cover (14).

4. The u-tube heat exchanger with bend cleaning function according to claim 3, characterized in that: The other group of the flange plates (13) is threadedly connected with a front end cover (15) on one side, the top and the bottom of the front end cover (15) are throughly connected with A injection pipes (16).

5. The u-tube heat exchanger with bend cleaning function according to claim 1, characterized in that: The top and the bottom of the shell (1) are throughly connected with B injection pipes (17), the surface of the positioning sheet (9) is provided with two groups of through holes.

6. The u-tube heat exchanger with bend cleaning function according to claim 1, characterized in that: The bottom of the shell (1) is fixedly connected with two groups of supporting frames (18), the bottom of the supporting frame (18) is fixedly connected with a bottom plate (19).

7. The u-tube heat exchanger with bend cleaning function according to claim 1, characterized in that: The surface of the piston (1002) is sleeved with a sealing ring (20), the material of the sealing ring (20) is rubber material.

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