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CN-224230834-U - Online scale-removing shell-and-tube heat exchanger

CN224230834UCN 224230834 UCN224230834 UCN 224230834UCN-224230834-U

Abstract

The utility model discloses an online scale-cleaning type shell-and-tube heat exchanger, which comprises a modularized shell-and-tube heat exchanger and an online scale-cleaning unit; the modularized shell-and-tube heat exchanger comprises a shell, a shell side inlet, a shell side outlet, a heat exchange tube, a tube plate, a shell side baffle plate, a connecting water chamber, a water inlet and outlet chamber, a tube side inlet, a tube side outlet, a first sewage outlet, a first middle partition plate, a base, a shell side connecting tube, a tube side connecting tube and a second sewage outlet, wherein an online scale cleaning unit comprises an online scale cleaning assembly, a cam and a scale cleaning rocker, and the online scale cleaning assembly comprises an expansion plate, a support, a cam groove, a nail plate, a connecting piece, a convex nail, a scale cleaning pull rod, a scale cleaning spiral scraping blade and a spring.

Inventors

  • FAN PENG
  • LIU XIANGYU
  • ZHANG LONG
  • QIAO CHANGMING
  • LIU YONGCAI

Assignees

  • 深圳市佳运通电子有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (6)

  1. 1. An online scale-cleaning shell-and-tube heat exchanger is characterized by comprising a modularized shell-and-tube heat exchanger and an online scale-cleaning unit; The modularized shell-and-tube heat exchanger comprises a shell (3), a shell side inlet (2), a shell side outlet (12), heat exchange tubes (17), a tube plate (16), shell side baffle plates (18), a connecting water chamber (1), a water inlet and outlet chamber (10), a tube side inlet (8), a tube side outlet (9), a first sewage outlet (7), a first middle partition plate (19), a base (14), a shell side connecting tube (4), a tube side connecting tube (5) and a second sewage outlet (13); The online scale cleaning unit comprises an online scale cleaning assembly (6), a cam (15) and a scale cleaning rocker (11), wherein the online scale cleaning assembly (6) comprises an expansion plate (6-1), a support (6-2), a cam groove (6-3), a nail plate (6-4), a connecting piece (6-5), a convex nail (6-6), a scale cleaning pull rod (6-7), a scale cleaning spiral scraping blade (6-8) and a spring (6-9); The shell (3) is fixed with the tube plate (16), the tube side connecting tube (5), the water inlet and outlet chamber (10) and the connecting water chamber (1) are connected and fixed together, the shell side connecting tube (4), the shell side inlet (2) of the first heat exchange module and the shell side outlet (12) of the second heat exchange module are connected and fixed together, a middle partition plate II (5-7) is arranged in the middle of the tube side connecting tube (5), the middle partition plate II (5-7) divides the heat exchange tube into four areas, a set of online scale cleaning assembly (6) is arranged in each area, a scale cleaning spiral scraping blade (6-8) is wound and fixed on the outer edge of the scale cleaning pull rod (6-7), the ends of the scale cleaning pull rod (6-7) and the convex nails (6-6) are respectively in an external thread design, two ends of the connecting piece (6-5) are in an internal thread design, the scale cleaning pull rod (6-7) and the convex nails (6-6) are fixedly connected with each other through the thread and the connecting piece (6-5), a plurality of convex nails (6-6) are fixedly connected with the convex nails (6-6) and the plate (6-6) together through the mode of welding together, one side of the convex nails (6-6) is fixed together, and one side of the convex nails (6) is fixed together by the convex nails is fixed together through the convex nails, a spring (6-9) is sleeved on one side, close to the nail plate (6-4), of the outer portion of the scale removal pull rod (6-7) corresponding to the expansion plate (6-1), two supporting seats (6-2) are respectively arranged on two end faces of the expansion plate (6-1), and a cam groove (6-3) is formed in the other side of the expansion plate (6-1).
  2. 2. An on-line scale-cleaning shell-and-tube heat exchanger according to claim 1, wherein the tube side connecting tube (5) comprises a connecting tube shell (5-1), a shaft hole (5-2), a three sewage draining outlet (5-3), a connecting flange (5-4), a limiting shaft groove (5-5), a limiting sliding rail (5-6), a second middle partition plate (5-7) and a shaft seat (5-8); An axle seat (5-8) is arranged in the middle of two side surfaces of a middle baffle plate II (5-7) of the tube side connecting tube (5), an axle hole (5-2) is respectively formed in a connecting tube shell (5-1) corresponding to the axle seat (5-8), two limiting slide rails (5-6) are respectively arranged on two sides of the axle seat (5-8) and the axle hole (5-2), a limiting axle groove (5-5) with a flange interface is arranged on the outer side of the axle hole (5-2), and a bayonet lock (11-1) and a chuck (11-2) are arranged on a scale cleaning rocker (11).
  3. 3. An on-line scale-cleaning shell-and-tube heat exchanger as claimed in claim 2, wherein the section of the cam (15) is of an elliptical design, a square groove through hole is formed in the end face of the cam (15), a circular through hole is formed in both side faces of the cam groove (6-3), and square groove holes are formed in both sides of the circular hole in the single side face of the cam groove (6-3); the four heat exchange tube areas are respectively provided with one set of online scale cleaning assembly (6), four sets of online scale cleaning assemblies (6) are arranged in a total mode, the four sets of online scale cleaning assemblies (6) are arranged in a back-to-back mode, each scale cleaning pull rod (6-7) is concentrically arranged with the corresponding heat exchange tube (17), the outer edge of each scale cleaning spiral scraping blade (6-8) is tangential to the inner wall of the corresponding heat exchange tube (17), the bottom surface of each support (6-2) is supported on each limiting sliding rail (5-6), one end of each spring (6-9) in an initial state is aligned with the side wall of the tube plate (16), the other end of each spring is aligned with the side wall of the corresponding nail plate (6-4), the end faces of the cam grooves (6-3) of the two sets of online scale cleaning assemblies (6) which are arranged in a counter-to-each other are attached together, a cam (15) is arranged in the two attached together parts (6-3), one side of each cam groove (6-3) is outwards provided with a square groove, one end of each rocker (11) is provided with a chuck (11-2) is arranged on the side of each cam groove (6-3) outwards through the limiting shaft groove (5-5), the shaft hole (5-2), the cam groove (6-3) and the cam (15) are inserted into and supported by the shaft seat (5-8), the outer edge of the chuck (11-2) is attached to the inner wall of the square groove in the cam (15), the inner end surface of the chuck (11-2) is attached to the inner wall of the cam groove (6-3), the side surface of the bayonet lock (11-1) is attached to the flange surface of the limiting shaft groove (5-5), and a sealing structure is arranged at the shaft hole (5-2).
  4. 4. An on-line scale removal shell and tube heat exchanger as claimed in claim 3, wherein the scale removal rocker (11) is of motor-driven design.
  5. 5. An on-line scale-cleaning shell-and-tube heat exchanger as claimed in claim 4, wherein the screw pitch of the scale-cleaning screw scraping blade (6-8) is designed by adopting the distance that the on-line scale-cleaning assembly (6) can move back and forth.
  6. 6. An on-line scale removing shell-and-tube heat exchanger according to claim 5, wherein the springs (6-9) are compressible springs.

Description

Online scale-removing shell-and-tube heat exchanger Technical Field The utility model relates to the technical field of heat exchangers, in particular to an online scale-removing shell-and-tube heat exchanger. Background In the industrial production process, the heat exchanger is one of the most commonly used process equipment, has wide application in industries such as metallurgy, petrifaction, electric power, building materials and the like, and has great promotion effect on the efficient operation of the production process due to the design and production of the heat exchanger. According to the different types of process media participating in heat exchange and the different production process requirements, the types and types of heat exchangers are more, and the common heat exchangers mainly comprise shell-and-tube type, plate type, gas-liquid type, gas-gas type, fin tube type and the like, and the corresponding heat exchanger types are preferred in different application scenes. However, in some heat exchange environments for sewage, the problem of scale formation and blockage of a heat exchanger is always a difficult problem which puzzles the technical development of the industry, such as a condenser of a power plant, a sewage heat exchanger of an oil field, an evaporator of a sewage source heat pump and the like, and blockage phenomenon always exists, so that the heat exchange efficiency of the equipment is affected, the equipment is stopped periodically to remove scale, the production stopping loss benefit and the corresponding maintenance cost are considerable, and serious damage is brought to the production and operation of enterprises and the energy-saving project revenue generation. Under the situation, many experts and enterprises have made a great deal of research and practice, the scale cleaning technology in the current industry mainly comprises mechanical scale cleaning, chemical scale cleaning, physical scale cleaning, biological scale cleaning and the like, different scale cleaning technologies are different in application scene, scale cleaning effect and technology reliability, and most of the scale cleaning technologies can be implemented only by inputting manpower and material resources, so that the operation cost is high. Therefore, it is necessary to provide an on-line scale-removing shell-and-tube heat exchanger to solve the above problems. Disclosure of utility model The utility model aims to provide an on-line scale-removing shell-and-tube heat exchanger aiming at the defects of the prior art so as to solve the problem of scale blockage of the heat exchanger. The utility model provides an online scale cleaning type shell-and-tube heat exchanger which comprises a modularized shell-and-tube heat exchanger and an online scale cleaning unit, wherein the modularized shell-and-tube heat exchanger comprises a shell, a shell side inlet, a shell side outlet, a heat exchange tube, a tube plate, a shell side baffle plate, a connecting water chamber, a water inlet and outlet chamber, a tube side inlet, a tube side outlet, a first sewage outlet, a middle baffle plate, a base, a shell side connecting tube, a tube side connecting tube and a second sewage outlet, the online scale cleaning unit comprises an online scale cleaning assembly, a cam and a scale cleaning rocker, the online scale cleaning assembly comprises an expansion plate, a support, a cam groove, a nail plate, a connecting piece, a convex nail, a scale cleaning pull rod, a scale cleaning screw scraping blade and a spring, the shell and the tube plate are fixed together, the tube plate, the tube side connecting tube, the water inlet and the water inlet chamber are connected together, the shell side connecting tube side outlet of a first heat exchange module is connected together, the middle baffle plate is arranged in the middle of the tube side, the middle baffle plate is divided into four areas, a set of scale cleaning assembly is arranged in each area, the online scale cleaning assembly is arranged in the area, the convex nail is connected with one side of the expansion plate by adopting the expansion plate and the convex nail, the convex nail is connected with the convex nail by adopting the expansion plate and the convex nail, and the convex nail are respectively, and the scale cleaning screw are fixedly arranged at one side and the end of the expansion plate and the outer edge plate and the side of the spiral nail are respectively, and are connected with the expansion plate and the expansion plate by the convex nail and the convex nail. The tube side connecting tube mainly comprises a connecting tube shell, a shaft hole, a drain outlet III, a connecting flange, a limiting shaft groove, a limiting sliding rail, a middle partition plate II and a shaft seat, wherein the shaft seat is respectively arranged in the middle of two side surfaces of the middle partition plate II of the tube side connecting tube, the connecting tube shell