Large-temperature-difference heat exchange station

Abstract

The large-temperature-difference heat exchange station comprises a heat exchanger, a circulating pump and a winding rod, the heat exchanger comprises a tube plate, two end covers and a heat exchange tube, the heat exchange tube is fixedly connected to the inner side of the tube plate, and the two end covers are symmetrically distributed on the two sides of the vertical center line of the heat exchanger; the inner sides of the two end covers are fixedly connected with partition plates, the inner side of one partition plate is slidably connected with a guide shaft, the other end of the guide shaft is fixedly connected with a cleaning roller, and bristles are arranged on the surface of the cleaning roller. The cleaning roller slides on the inner side of the heat exchange tube in a reciprocating mode through the winding rods on the two sides, so that the cleaning roller cleans dirt on the inner side of the heat exchange tube, meanwhile, the heat exchange tube is cleaned every day, the adhesion capacity of the dirt on the inner side of the heat exchange tube is poor, the cleaning roller can also rapidly clean the dirt, operation is easy, and the cleaning efficiency is high. The whole heat exchanger does not need to be disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of economics teaching, in particular to a large temperature difference heat exchange station. Background Art

[0002] The heat exchange station uses plate heat exchangers for heat exchange, which is an indirect heat exchange method. The heat exchange is divided into two closed hot water systems. The first is the high-temperature heat source system. The 150-degree Celsius high-temperature water heated by the power plant steam enters the station water, then enters the water exchanger, releases heat, and then flows back to the power plant. The second is the residential heating water system, which obtains heat from the heat exchanger. The heated water enters the heating network area, releases heat and cools down, then returns to the heat exchanger to heat up, and the cycle is repeated. The heat exchange station includes main structures such as heat exchangers and circulating pumps.

[0003] At present, after a long period of operation, dirt will adhere to the inner side of the heat exchange tube inside the heat exchanger. The accumulation of dirt will reduce the cross-section of the internal channel of the heat exchanger or even block it, resulting in insufficient cooling water flow and reduced pressure, causing shutdown and production suspension; it may even cause safety accidents such as blistering, cracking, and bursting of the tube. Due to the troublesome disassembly of the heat exchanger, the heat exchange tube inside the heat exchanger cannot be cleaned frequently. At present, the heat exchanger is disassembled to clean the dirt on the inside of the heat exchange tube only after the dirt on the inside of the heat exchange tube accumulates to a certain extent, thereby affecting the normal use of the heat exchanger. Therefore, a large temperature difference heat exchange station is proposed to address the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A large temperature difference heat exchange station comprises a heat exchanger, a circulation pump and a winding rod, wherein the heat exchanger comprises a tube sheet, an end cover and a heat exchange tube, the inner side of the tube sheet is fixedly connected with a heat exchange tube, the number of the end covers is two, and they are symmetrically distributed on both sides of the vertical center line of the heat exchanger, the inner sides of the two end covers are fixedly connected with partitions, the inner side of one of the partitions is slidably connected with a guide shaft, the other end of the guide shaft is fixedly connected with a cleaning roller, the surface of the cleaning roller is provided with bristles, and the cleaning roller is arranged on one side of the heat exchange tube, one end of the guide shaft is provided with a traction mechanism, one end of the two end covers is fixedly connected with a fixed shell, and one end of the fixed shell is provided with a limiting mechanism.

[0007] Preferably, the length of the guide shaft is greater than the distance between the partition and the adjacent tube sheet.

[0008] Preferably, the traction mechanism includes a winding rod rotatably connected to the end cover, a winding rope is wound on the outer side of the winding rod, and winding ropes are arranged on both sides of the vertical center line of the heat exchanger, one side of the winding rope is fixedly connected to the cleaning roller, and one end of the winding rope on the other side is fixedly connected to the guide shaft, and a power assembly is arranged at one end of the winding rod.

[0009] Preferably, the heat exchange tubes are arranged in a row from top to bottom on one side of the partition, and the number of the winding rods is the same as the number of rows of the heat exchange tubes.

[0010] Preferably, the power assembly includes a sprocket fixedly connected to the winding rod, a chain is meshed on the outer side of the sprocket, one end of one of the sprockets is connected to a motor via a rotating shaft, and the motor is fixedly connected to the fixed shell.

[0011] Preferably, the limiting mechanism includes a screw rod spirally connected to the fixed shell, the bottom end of the screw rod is rotatably connected to the limiting block, the bottom end of the limiting block is fixedly connected to an anti-slip pad, the top end of the limiting block is fixedly connected to a guide column, and the guide column is slidably connected to the fixed shell, and the top end of the screw rod is fixedly connected to a handwheel.

[0012] Preferably, the outlet end of the heat exchanger is connected to a liquid outlet pipe, the bottom end of the liquid outlet pipe is spirally connected to a connecting cover, and one end of the liquid outlet pipe is connected to a circulation pump.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. A large temperature difference heat exchange station, by setting a cleaning roller on the side of the heat exchange tube, when it is necessary to clean the dirt on the inside of the heat exchange tube, the cleaning roller is made to slide back and forth on the inside of the heat exchange tube through the winding rods on both sides, so that the cleaning roller can clean the dirt on the inside of the heat exchange tube. At the same time, the heat exchange tube is cleaned every day. The dirt on the inside of the heat exchange tube has poor adhesion ability, and the cleaning roller can also quickly clean the dirt. The operation is simple and there is no need to disassemble the entire heat exchanger.

[0015] 2. A large temperature difference heat exchange station, through the provision of a hand wheel, a screw, a guide column, a limit block, and an anti-skid pad, when the heat exchanger is in normal use, the winding rod is clamped and fixed by the limit block and the anti-skid pad to ensure that the winding rod will not rotate arbitrarily, thereby realizing the limit fixation of the cleaning roller, preventing the cleaning roller from entering the inner side of the heat exchange tube and affecting the normal operation of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Figure 1 It is a schematic diagram of the overall structure of a large temperature difference heat exchange station of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of the installation structure of a reeling rope of a large temperature difference heat exchange station.

[0019] Figure 3 The utility model is a schematic diagram of the installation structure of a chain of a large temperature difference heat exchange station.

[0020] Figure 4 The utility model is a schematic diagram of the installation structure of a cleaning roller of a large temperature difference heat exchange station.

[0021] Figure 5 The utility model is a schematic diagram of the installation structure of a guide shaft of a large temperature difference heat exchange station.

[0022] Figure 6 The utility model is a schematic diagram of the installation structure of a limit block of a large temperature difference heat exchange station.

[0023] In the figure: 1. heat exchanger; 101. tube sheet; 102. end cover; 103. heat exchange tube; 2. fixed shell; 3. motor; 4. sprocket; 5. winding rod; 6. winding rope; 7. guide shaft; 8. cleaning roller; 9. chain; 10. partition; 11. circulation pump; 12. hand wheel; 13. screw; 14. guide column; 15. limit block; 16. anti-skid pad; 17. liquid outlet pipe; 18. connecting cover. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent. In order to better illustrate the specific implementation methods of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific implementation methods in the utility model, all other specific implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Example

[0026] like Figure 1-6 As shown, a large temperature difference heat exchange station includes a heat exchanger 1, a circulating pump 19 and a winding rod 5. The heat exchanger 1 includes a tube sheet 101, an end cover 102 and a heat exchange tube 103. The inner side of the tube sheet 101 is fixedly connected with the heat exchange tube 103. There are two end covers 102, which are symmetrically distributed on both sides of the vertical center line of the heat exchanger 1. The inner sides of the two end covers 102 are fixedly connected with partitions 10, and the inner side of one of the partitions 10 is slidably connected with a guide shaft 7. The other end of the guide shaft 7 is fixedly connected with a cleaning roller 8. The surface of the cleaning roller 8 is provided with bristles. The cleaning roller 8 can clean the dirt on the inner side of the heat exchange tube 103 by the bristles, and the cleaning roller 8 is arranged on one side of the heat exchange tube 103. One end of the guide shaft 7 is provided with a traction mechanism. One end of the two end covers 102 is fixedly connected with a fixed shell 2, and one end of the fixed shell 2 is provided with a limiting mechanism.

[0027] As a further improvement of the present invention, the length of the guide shaft 7 is greater than the distance between the partition 10 and the adjacent tube sheet 101 , ensuring that the guide shaft 7 can move normally between the partition 10 and the heat exchange tube 103 .

[0028] As a further improvement of the utility model, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the traction mechanism includes a winding rod 5 rotatably connected to the end cover 102, and a winding rope 6 is wound on the outer side of the winding rod 5. Winding ropes 6 are arranged on both sides of the vertical center line of the heat exchanger 1, and the winding rope 6 on one side is fixedly connected to the cleaning roller 8, and one end of the winding rope 6 on the other side is fixedly connected to the guide shaft 7. A power component is arranged at one end of the winding rod 5. When it is necessary to clean the dirt on the inner side of the heat exchange tube 103, the cleaning roller 8 is made to slide back and forth on the inner side of the heat exchange tube 103 through the winding rods 5 on both sides, so that the cleaning roller 8 can clean the dirt on the inner side of the heat exchange tube 103. At the same time, the heat exchange tube 103 is cleaned every day. The dirt on the inner side of the heat exchange tube 103 has poor adhesion ability, and the cleaning roller 8 can also quickly clean the dirt. The operation is simple and there is no need to disassemble the entire heat exchanger 1.

[0029] As a further improvement of the utility model, Figure 2 , Figure 3 , Figure 4 As shown, the heat exchange tubes 103 are arranged in rows from top to bottom on one side of the partition 10, and the number of winding rods 5 is the same as the number of rows of the heat exchange tubes 103. At the same time, the lengths of the winding rods 5 at different positions are different. By setting up multiple winding rods 5, the cleaning rollers 8 on the sides of the heat exchange tubes 103 can slide on the inner side of the heat exchange tubes 103 at the same time.

[0030] As a further improvement of the utility model, Figure 2 , Figure 3 , Figure 4 As shown, the power assembly includes a sprocket 4 fixedly connected to the winding rod 5, and a chain 9 is meshed on the outer side of the sprocket 4. One end of one of the sprockets 4 is connected to a motor 3 through a rotating shaft, and the motor 3 is fixedly connected to the fixed shell 2. The chain 9 drives the sprockets 4 at different positions to rotate at the same time, thereby causing the winding rods 5 at different positions to rotate at the same time. No manual rotation is required, which is convenient for the staff to use.

[0031] As a further improvement of the utility model, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the limiting mechanism includes a screw 13 spirally connected to the fixed shell 2, the bottom end of the screw 13 is rotatably connected to the limiting block 15, the bottom end of the limiting block 15 is fixedly connected to the anti-skid pad 16, the top of the limiting block 15 is fixedly connected to the guide column 14, and the guide column 14 is slidably connected to the fixed shell 2, and the top of the screw 13 is fixedly connected to the handwheel 12. When the heat exchanger 1 is used normally, the winding rod 5 is clamped and fixed by the limiting block 15 and the anti-skid pad 16 to ensure that the winding rod 5 does not rotate arbitrarily, thereby realizing the limiting fixation of the cleaning roller 8 and preventing the cleaning roller 8 from entering the inner side of the heat exchange tube 1 and affecting the normal operation of the heat exchange tube 103.

[0032] As a further improvement of the utility model, Figure 1 As shown, the outlet end of the heat exchanger 1 is connected to a liquid outlet pipe 17, the bottom end of the liquid outlet pipe 17 is spirally connected to a connecting cover 18, one end of the liquid outlet pipe 17 is connected to a circulation pump 11, and the waste liquid for cleaning the heat exchange tube 103 can be discharged through the bottom outlet of the liquid outlet pipe 17.

[0033] Workflow: The staff can clean the heat exchange tube 103 every day, every other day or every two days as needed. When the dirt on the inside of the heat exchange tube 103 needs to be cleaned, the circulation pump 11 is stopped and the connecting cover 18 is removed from the bottom end of the liquid outlet pipe 17. Then, the hand wheel 12 drives the screw 13 to rotate counterclockwise on the inner side of the fixed shell 2, so that the screw 13 with the limit block 15 and the anti-slip pad 16 are separated from the corresponding winding rod 5. Then, the motors 3 on both sides are controlled to work at the same time, so that the motors 3 on both sides rotate in one direction at the same time, so that the motor 3 close to the liquid outlet pipe 17 reels the winding rope 6 through the winding rod 5, so that the other motor 3 drives the winding rod 5 to gradually release the corresponding winding rope 6, and under the action of the winding rope 6, the cleaning roller 8 is pulled into the heat exchange The cleaning roller 8 slides from the end of the heat exchange tube 103 away from the liquid outlet pipe 17 to the end of the heat exchange tube 103 close to the liquid outlet pipe 17, and the dirt generated by cleaning will be discharged through the liquid outlet pipe 17. After cleaning is completed, the motors 3 on both sides rotate clockwise, so that the cleaning roller 8 is pulled out from the inner side of the heat exchange tube 103 through the winding rope 6, and the cleaning roller 8 is stored on the inner side of the right end cover 102, and then the hand wheel 12 drives the screw 13 to rotate clockwise on the inner side of the fixed shell 2, so that the screw 13 is clamped together with the limit block 15 and the anti-skid pad 16 with the corresponding winding rod 5 to ensure that the winding rod 5 will not rotate arbitrarily, thereby realizing the limit fixation of the cleaning roller 8 and preventing the cleaning roller 8 from entering the inner side of the heat exchange tube 1 and affecting the normal operation of the heat exchange tube 103.

[0034] The above is a preferred implementation mode of the utility model. The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Technical personnel in this industry should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the utility model. Without departing from the protection scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A large temperature difference heat exchange station, comprising a heat exchanger (1), a circulation pump (11) and a winding rod (5), Features: The heat exchanger (1) comprises a tube sheet (101), an end cover (102) and a heat exchange tube (103); the inner side of the tube sheet (101) is fixedly connected to the heat exchange tube (103); there are two end covers (102) and they are symmetrically distributed on both sides of the vertical center line of the heat exchanger (1); the inner sides of the two end covers (102) are fixedly connected to a partition (10); the inner side of one of the partitions (10) is slidably connected to a guide shaft (7); the other end of the guide shaft (7) is fixedly connected to a cleaning roller (8); the surface of the cleaning roller (8) is provided with bristles, and the cleaning roller (8) is arranged on one side of the heat exchange tube (103); one end of the guide shaft (7) is provided with a traction mechanism; one end of the two end covers (102) is fixedly connected to a fixed shell (2); one end of the fixed shell (2) is provided with a limiting mechanism.

2. A large temperature difference heat exchange station according to claim 1, Features: The length of the guide shaft (7) is greater than the distance between the partition plate (10) and the adjacent tube plate (101).

3. A large temperature difference heat exchange station according to claim 1, Features: The traction mechanism comprises a winding rod (5) rotatably connected to the end cover (102), a winding rope (6) is wound on the outer side of the winding rod (5), and winding ropes (6) are arranged on both sides of the vertical center line of the heat exchanger (1), one side of the winding rope (6) is fixedly connected to the cleaning roller (8), and one end of the winding rope (6) on the other side is fixedly connected to the guide shaft (7), and one end of the winding rod (5) is arranged with a power assembly.

4. A large temperature difference heat exchange station according to claim 1, Features: The heat exchange tubes (103) are arranged in a row from top to bottom on one side of the partition (10), and the number of the winding rods (5) is the same as the number of rows of the heat exchange tubes (103).

5. A large temperature difference heat exchange station according to claim 3, Features: The power assembly comprises a sprocket (4) fixedly connected to the winding rod (5), a chain (9) meshing on the outer side of the sprocket (4), one end of one of the sprockets (4) being connected to a motor (3) via a rotating shaft, and the motor (3) being fixedly connected to the fixed shell (2).

6. A large temperature difference heat exchange station according to claim 1, Features: The limiting mechanism comprises a screw rod (13) which is spirally connected to the fixed shell (2); the bottom end of the screw rod (13) is rotatably connected to a limiting block (15); the bottom end of the limiting block (15) is fixedly connected to an anti-slip pad (16); the top end of the limiting block (15) is fixedly connected to a guide column (14); the guide column (14) is slidably connected to the fixed shell (2); and the top end of the screw rod (13) is fixedly connected to a hand wheel (12).

7. A large temperature difference heat exchange station according to claim 1, Features: The outlet end of the heat exchanger (1) is connected to a liquid outlet pipe (17), the bottom end of the liquid outlet pipe (17) is spirally connected to a connecting cover (18), and one end of the liquid outlet pipe (17) is connected to a circulation pump (11).

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