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CN-224215898-U - Guiding structure of shell-and-tube heat exchanger

CN224215898UCN 224215898 UCN224215898 UCN 224215898UCN-224215898-U

Abstract

The utility model discloses a shell-and-tube heat exchanger guide structure, which comprises a shell, a heat exchange tube bundle positioned in the shell, two tube plates arranged at two ends of the heat exchange tube bundle, wherein a support beam is arranged between the two tube plates along the axial direction of the shell, the bottom surface of the support beam is provided with an arc surface matched with the shape of the inner wall of the shell, the arc surface and the outer edge of the tube plates are provided with guide sliding grooves in a consistent manner along the axial direction, the inner wall of the shell is provided with a sliding block matched with the guide sliding grooves, one end of the shell is provided with a detachable guide assembly, the guide assembly comprises an installation base connected with the shell, and a guide wheel rotatably arranged on the installation base, and the guide wheel and the guide sliding grooves form rolling contact. The utility model can axially guide the tube bundle when the tube bundle is integrally pushed into the shell, reduces the alignment deviation of the tube plate and the flange of the shell, reduces the precision requirement on the traction device, supports the tube bundle and reduces the possibility of flexural deformation of the tube bundle.

Inventors

  • ZHAO ZIYAO
  • JI WEN
  • Bao Baotong
  • LIU YAN
  • ZHANG XUAN
  • LI BOKUI

Assignees

  • 江苏科圣特种设备制造有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (7)

  1. 1. The shell-and-tube heat exchanger guiding structure comprises a shell (1), a heat exchange tube bundle positioned in the shell (1) and two tube plates (2) arranged at two ends of the heat exchange tube bundle, and is characterized in that a supporting beam (3) is axially arranged between the two tube plates (2) along the shell (1), the bottom surface of the supporting beam (3) is an arc surface (4) which is matched with the shape of the inner wall of the shell (1), the arc surface (4) and the outer wall of the tube plate (2) are axially and continuously provided with a guiding chute (5), the inner wall of the shell (1) is provided with a sliding block matched with the guiding chute (5), one end of the shell (1) is provided with a detachable guiding assembly, the guiding assembly comprises a mounting base (6) connected with the shell (1), and a guiding wheel (7) rotatably arranged on the mounting base (6), and the guiding wheel (7) and the guiding chute (5) form rolling contact.
  2. 2. The shell-and-tube heat exchanger guiding structure according to claim 1, wherein the width of the wheel surface of the guiding wheel (7) is matched with the width of the guiding chute (5), the rolling working surface of the guiding wheel (7) is in rolling contact with the bottom of the guiding chute (5), and the height difference between the top end of the guiding wheel (7) and the upper end surface of the mounting base (6) is larger than the depth of the guiding chute (5).
  3. 3. A shell-and-tube heat exchanger guiding structure according to claim 1 or 2, characterized in that the mounting base (6) is detachably connected with the flange (9) at the end of the housing (1) by means of bolts (8).
  4. 4. A shell-and-tube heat exchanger guiding structure as claimed in claim 1, wherein the heat exchange tube bundle comprises a plurality of heat exchange tubes (10) axially arranged along the shell (1), a pull rod (11) is axially arranged between two tube plates (2) along the shell, baffle plate groups slidably arranged on the pull rod (11) are arranged on the heat exchange tubes (10), and a distance tube (12) arranged between two adjacent baffle plates is sleeved on the pull rod (11).
  5. 5. The shell-and-tube heat exchanger guiding structure according to claim 4, wherein the baffle plate group comprises arched baffle plates (13) which are distributed in an up-and-down staggered way, and a positioning opening (14) matched with the supporting beam (3) is arranged at the lower end of the arched baffle plate (13) positioned below.
  6. 6. The shell-and-tube heat exchanger guiding structure according to claim 1, wherein bearing rods (15) are symmetrically arranged at the lower end of the mounting base (6), and leveling blocks (16) abutted to the ground are connected to the lower ends of the bearing rods (15) in a threaded mode.
  7. 7. The shell-and-tube heat exchanger guiding structure according to claim 1, wherein the two ends of the shell (1) are connected with sealing heads (17) through flanges (9), and a bracket (18) is arranged on the outer side of the shell (1).

Description

Guiding structure of shell-and-tube heat exchanger Technical Field The utility model relates to the technical field of heat exchangers, in particular to a guiding structure of a shell-and-tube heat exchanger. Background The shell-and-tube heat exchanger is used as heat exchange equipment widely applied in the industrial field, the core structure of the shell-and-tube heat exchanger takes the wall surface of a tube bundle in a closed shell as a heat transfer interface, and the heat transfer of cold and hot fluid is realized through dividing wall type heat exchange. The equipment is a standard configuration in the fields of petrochemical industry, energy power and the like due to the advantages of simple structure, low manufacturing cost, wide flow section, convenience in cleaning and maintenance and the like. The traditional tube-shell heat exchanger has the advantages that the assembly process is mainly divided into two types, namely, the tube plates are directly welded on the inner wall of the shell and then are penetrated and assembled one by one, the method is required to finish accurate alignment of a large number of heat exchange tubes in a narrow space, the operation efficiency is low, tube hole dislocation is easy to be caused by tube plate welding deformation, and the heat exchange tubes and the tube plates are assembled into a tube bundle whole outside the shell in advance and then pushed into the shell to finish the assembly. When the tube bundle is integrally pushed in, the tube plate and the shell flange are easy to deviate due to lack of axial guiding, so that the alignment deviation of the tube plate and the shell flange influences the sealing performance of the subsequent seal head installation, and the accurate control of pushing the whole body by the traction device is very dependent. Moreover, the tube plates at the end parts are only relied on to bear thrust, and the middle part of the tube bundle is easy to flex and deform due to lack of effective support, so that dislocation friction between the heat exchange tube and the baffle holes is caused, and fretting wear and even tube wall breakage are caused. Disclosure of utility model The utility model aims to provide a shell-and-tube heat exchanger guide structure which can guide a tube bundle axially when the tube bundle is integrally pushed into a shell, reduce the alignment deviation of a tube plate and a shell flange, reduce the precision requirement on a traction device, support the tube bundle and reduce the possibility of deflection deformation of the tube bundle. The shell-and-tube heat exchanger guiding structure comprises a shell, a heat exchange tube bundle positioned in the shell, two tube plates arranged at two ends of the heat exchange tube bundle, wherein a supporting beam is axially arranged between the two tube plates along the shell, the bottom surface of the supporting beam is provided with an arc surface matched with the shape of the inner wall of the shell, the arc surface and the outer edge of the tube plates are axially and continuously provided with guiding sliding grooves, the inner wall of the shell is provided with sliding blocks matched with the guiding sliding grooves, one end of the shell is provided with a detachable guiding assembly, the guiding assembly comprises a mounting base connected with the shell and guiding wheels rotatably arranged on the mounting base, and the guiding wheels and the guiding sliding grooves form rolling contact. According to a further improvement scheme, the width of the wheel surface of the guide wheel is matched with the groove width of the guide chute, the rolling working surface of the guide wheel is in rolling contact with the groove bottom of the guide chute, and the height difference between the top end of the guide wheel and the upper end surface of the mounting base is larger than the depth of the guide chute. According to a further development of the utility model, the mounting base is detachably connected to the flange at the end of the housing by means of bolts. According to a further improved scheme, the heat exchange tube bundle comprises a plurality of heat exchange tubes axially arranged along the shell, a pull rod is axially arranged between two tube plates along the shell, baffle plate groups which are slidably arranged on the pull rod are arranged on the heat exchange tubes, and distance tubes positioned between two adjacent baffle plates are sleeved on the pull rod. According to a further improvement scheme, the baffle plate group comprises arched baffle plates which are distributed in an up-and-down staggered mode, and a positioning opening matched with the supporting beam is formed in the lower end of each arched baffle plate positioned below the arched baffle plate. According to a further improvement scheme, bearing rods are symmetrically arranged at the lower ends of the mounting bases, and leveling blocks which are in butt joint with the ground are connected