A pipe support structure for shell and tube heat exchanger

Abstract

The present invention provides a pipe support structure for a shell and tube heat exchanger, and relates to the field of heat exchanger pipe support equipment. The pipe support structure for a shell and tube heat exchanger comprises a shell, and tube sheets are fixedly provided on both sides of the shell, and a plurality of heat transfer tubes are provided between the two tube sheets, and a plurality of baffles are provided on the plurality of heat transfer tubes, and the baffles are fixedly connected to the inner wall of the shell. By arranging a support seat, a support plate, a through hole, a limit plate, an installation groove, a limit frame, a second trapezoidal block, a spring and a first trapezoidal block, when the heat transfer tube vibrates and drives the support plate during the operation of the equipment, the support plate will drive the first trapezoidal block, and the first trapezoidal block will squeeze the two second trapezoidal blocks, and the two second trapezoidal blocks will move away from each other after being squeezed and squeeze the spring on one side, and the spring can reduce the moving distance of the second trapezoidal block, thereby reducing the amplitude generated by the support plate and the heat transfer tube, reducing the wear of the heat transfer tube, and reducing the noise generated.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchanger pipeline supporting equipment, in particular to a pipeline supporting structure for a shell and tube heat exchanger. Background Art

[0002] Shell and tube heat exchanger, also known as shell and tube heat exchanger. It consists of shell, heat transfer tube bundle, tube sheet, baffle and tube box. The shell is mostly cylindrical, with tube bundle inside, and both ends of the tube bundle are fixed on the tube sheet. The two hot and cold fluids for heat exchange, one flows in the tube, called tube-side fluid; the other flows outside the tube, called shell-side fluid. Shell and tube heat exchangers are widely used in industrial production. The multiple baffles installed inside the equipment have the function of changing the flow direction of shell-side fluid, increasing the flow rate and turbulence of the fluid, and improving the shell-side convective heat transfer coefficient. At the same time, they also play the role of supporting the tube bundle.

[0003] During the operation of the equipment, the pipeline will vibrate due to the flow of fluid. Long-term vibration will cause the pipeline to collide frequently with the through holes on the baffle, which will not only cause greater wear on the pipeline, but also generate greater noise. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pipe support structure for a shell and tube heat exchanger, which solves the problem that the heat exchanger pipes are subject to severe wear and tear and that noise is generated during operation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pipe support structure for a shell and tube heat exchanger, comprising a shell, tube sheets are fixedly provided on both sides of the shell, a plurality of heat transfer tubes are provided between the two tube sheets, a plurality of baffles are provided on the plurality of heat transfer tubes, the baffles are fixedly connected to the inner wall of the shell, pipe boxes are provided at both ends of the shell, connecting pipes are provided on the top, bottom and pipe box of the shell, two supports are fixedly provided on the bottom of the shell, and a support assembly is provided in the shell.

[0006] Preferably, the support is assembled from two vertical plates and one horizontal plate, the tops of the two vertical plates are fixedly connected to the bottom of the shell, the bottoms of the two vertical plates are fixedly connected to the top of the horizontal plate, and the bottom of the horizontal plate is fixedly provided with an anti-slip pad.

[0007] Preferably, the support assembly includes a plurality of support seats fixedly connected to the inner wall of the shell and a support plate movably connected to the heat transfer tube, the support plate is provided with a plurality of through holes, the through holes are adapted to the heat transfer tube, the support plate is provided with a plurality of hexagonal holes and mounting holes, the mounting holes are provided with heat insulating materials, a plurality of first trapezoidal blocks are provided on the outside of the support plate, a mounting groove is provided on a side of the support seat close to the support plate, two second trapezoidal blocks are movably provided in the mounting groove, a slot is provided in the through hole, and a buffer assembly is provided in the slot.

[0008] Preferably, a plurality of groups of limiting plates are fixedly provided on the outside of the support plate, the first trapezoidal block is located between two limiting plates, two limiting frames are fixedly provided on a side of the support seat close to the first trapezoidal block, and the limiting plates and limiting frames are movably connected.

[0009] Preferably, limit grooves are provided on the inner walls on both sides of the installation groove, limit blocks are fixedly provided on both sides of the second trapezoidal block, the limit blocks and the limit grooves are movably connected, and springs are fixedly provided on the sides away from the two second trapezoidal blocks, and the ends of the two springs away from each other are respectively fixedly connected to the inner walls of the installation groove.

[0010] Preferably, the adjacent sides of the two second trapezoidal blocks are provided with inclined surfaces, the two sides of the first trapezoidal block are provided with inclined surfaces, and the inclined surfaces on the two sides of the first trapezoidal block are parallel to the inclined surfaces on one side of the two second trapezoidal blocks.

[0011] Preferably, there are four support seats, and the four support seats are arranged in a circular equidistant array.

[0012] Preferably, the buffer assembly comprises an insert strip plugged into the slot, an arc plate is fixedly provided at the bottom of the insert strip, a rubber pad is fixedly provided at the bottom of the arc plate, the rubber pad fits the heat transfer tube, and a connecting bolt is movably provided on the insert strip.

[0013] Preferably, a fixing hole is provided on the inserting strip, the fixing hole is formed by an internal threaded hole and a receiving hole, the aperture of the receiving hole is larger than the aperture of the internal threaded hole, and the connecting bolt and the mounting hole are matched.

[0014] The present invention has the following beneficial effects:

[0015] By arranging a support seat, a support plate, a through hole, a limit plate, an installation groove, a limit frame, a second trapezoidal block, a spring and a first trapezoidal block, when the equipment is running and the heat transfer tube vibrates and drives the support plate, the support plate will drive the first trapezoidal block, and the first trapezoidal block will squeeze the two second trapezoidal blocks. After being squeezed, the two second trapezoidal blocks will move away from each other and squeeze the spring on one side. The spring can reduce the moving distance of the second trapezoidal block, thereby reducing the amplitude generated by the support plate and the heat transfer tube, reducing the wear of the heat transfer tube, and reducing the noise generated.

[0016] By setting the arc plate and rubber pad, the rubber pad and the surface of the heat transfer tube are fitted. When the fluid enters the heat transfer tube and causes it to vibrate during operation of the equipment, the heat transfer tube will generate friction with the rubber pad. The setting of the rubber pad can reduce the wear on the heat transfer tube. When the fluid enters the pipeline, the pipeline will expand and contract due to heat and cold. The elastic rubber pad can disperse the stress, thereby protecting the heat transfer tube and reasonably extending its service life.

[0017] By setting slots, inserts and connecting bolts, when the rubber pad needs to be replaced, a flat-blade screwdriver is inserted into the horizontal groove at one end of the connecting bolt and rotated counterclockwise to make one end of the connecting bolt protrude, and then the connecting bolt is pulled outward to pull the arc plate out for replacement. The adaptive use of the inserts and slots can facilitate the subsequent replacement of the rubber pad.

[0018] By setting hexagonal holes and thermal insulation materials, multiple hexagonal holes can form a honeycomb structure, which can not only reduce the weight but also ensure the overall strength of the support plate. The setting of the thermal insulation material can reduce the conduction of heat from the heat transfer tube to the support assembly and reduce the thermal stress of the support assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the front cross-section structure of the present invention;

[0021] Figure 3 It is an exploded schematic diagram of the support assembly in the present invention;

[0022] Figure 4 It is a schematic diagram of the enlarged structure of part A in the present invention;

[0023] Figure 5 It is a schematic diagram of the decomposition of the buffer component in the present invention.

[0024] Among them, 1. shell; 2. tube sheet; 3. heat transfer tube; 4. baffle; 5. tube box; 6. connecting pipe; 7. support; 8. support assembly; 801. support seat; 802. support plate; 803. through hole; 804. slot; 805. hexagonal hole; 806. thermal insulation material; 807. limit plate; 808. mounting groove; 809. limit frame; 810. second trapezoidal block; 811. spring; 812. first trapezoidal block; 9. buffer assembly; 901. arc plate; 902. rubber pad; 903. insert; 904. connecting bolt; 905. fixing hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a pipe supporting structure for a shell and tube heat exchanger, including a shell 1, tube sheets 2 are fixedly provided on both sides of the shell 1, a plurality of heat transfer tubes 3 are provided between the two tube sheets 2, a plurality of baffles 4 are provided on the plurality of heat transfer tubes 3, the baffles 4 are fixedly connected to the inner wall of the shell 1, pipe boxes 5 are provided at both ends of the shell 1, pipe connections 6 are provided on the top, bottom and tube boxes 5 of the shell 1, two supports 7 are fixedly provided at the bottom of the shell 1, the supports 7 are assembled by two vertical plates and one horizontal plate, the tops of the two vertical plates are fixedly connected to the bottom of the shell 1, and the bottoms of the two vertical plates are fixedly connected to the top of the horizontal plate.

[0027] In order to achieve the purpose of reducing noise and wear, an anti-slip pad is fixedly provided at the bottom of the horizontal plate. A support assembly 8 is provided in the shell 1. The support assembly 8 includes a plurality of support seats 801 fixedly connected to the inner wall of the shell 1 and a support plate 802 movably connected to the heat transfer tube 3. There are four support seats 801, and the four support seats 801 are in a circular equidistant array. A plurality of through holes 803 are provided on the support plate 802, and the through holes 803 are adapted to the heat transfer tube 3. A plurality of first trapezoidal blocks 812 are provided on the outside of the support plate 802, and the support seats 80 A mounting groove 808 is provided on one side close to the support plate 802, and two second trapezoidal blocks 810 are movably provided in the mounting groove 808. The two second trapezoidal blocks 810 are provided with inclined surfaces on the sides close to each other. The first trapezoidal block 812 is provided with inclined surfaces on both sides. The inclined surfaces on both sides of the first trapezoidal block 812 are parallel to the inclined surfaces on one side of the two second trapezoidal blocks 810. Limiting grooves are provided on the inner walls on both sides of the mounting groove 808. Limiting blocks are fixedly provided on both sides of the second trapezoidal block 810. The limiting blocks and the limiting grooves are movably connected. The two second trapezoidal blocks A spring 811 is fixedly provided on the side away from 810, and the ends of the two springs 811 away from each other are fixedly connected to the inner wall of the mounting groove 808, and multiple groups of limit plates 807 are fixedly provided on the outside of the support plate 802, and the first trapezoidal block 812 is located between the two limit plates 807. Two limit frames 809 are fixedly provided on the side of the support seat 801 close to the first trapezoidal block 812, and the limit plates 807 and the limit frames 809 are movably connected. The setting of the limit frames 809 and the limit plates 807 can limit the displacement of the support plate 802. The slot 804 is provided in the through hole 803. When the equipment is running, the heat transfer tube 3 will vibrate. During the vibration of the heat transfer tube 3, the support plate 802 will be driven. The support plate 802 will drive the first trapezoidal block 812. The first trapezoidal block 812 will squeeze the two second trapezoidal blocks 810. After being squeezed, the two second trapezoidal blocks 810 will move away from each other and squeeze the spring 811 on one side. The spring 811 can reduce the moving distance of the second trapezoidal block 810, thereby reducing the amplitude generated by the support plate 802 and reducing the noise generated.

[0028] In order to enhance the strength of the support plate 802 and reduce the thermal stress of the support assembly 8, a plurality of hexagonal holes 805 and mounting holes are provided on the support plate 802, and a heat insulating material 806 is provided in the mounting hole. The plurality of hexagonal holes 805 can form a honeycomb structure, which can not only reduce the weight but also ensure the overall strength of the support plate 802. The provision of the heat insulating material 806 can reduce the conduction of heat from the heat transfer tube 3 to the support assembly 8, thereby reducing the thermal stress of the support assembly 8.

[0029] In order to reduce wear and disperse stress, a buffer component 9 is provided in the slot 804. The buffer component 9 includes an insert strip 903 plugged into the slot 804. An arc plate 901 is fixedly provided at the bottom of the insert strip 903. A rubber pad 902 is fixedly provided at the bottom of the arc plate 901. The rubber pad 902 fits the heat transfer tube 3. A connecting bolt 904 is movably provided on the insert strip 903. A fixing hole 905 is provided on the insert strip 903. The fixing hole 905 is formed by an internal thread hole and a receiving hole. The aperture of the receiving hole is larger than the aperture of the internal thread hole. The connecting bolt 904 and the mounting hole are matched. When the fluid enters the pipeline, the pipeline will expand and contract due to heat and cold. When the pipeline expands and contracts due to heat and cold, it will fit with the rubber pad 902. The elastic rubber pad 902 can disperse stress, protect the heat transfer tube 3, reduce wear on the heat transfer tube 3, and reasonably extend its service life.

[0030] Working principle: When in use, insert the insert strip 903 into the slot 804 to achieve the installation and positioning of the arc plate 901, so that the rubber pad 902 at the bottom of the arc plate 901 fits with the surface of the heat transfer tube 3. When the equipment is running, the fluid enters the heat transfer tube 3 and causes it to vibrate, and the heat transfer tube 3 will generate friction with the rubber pad 902. The setting of the rubber pad 902 can reduce the wear on the heat transfer tube 3. When the fluid enters the pipeline, the pipeline will expand and contract due to heat. The elastic rubber pad 902 can disperse the stress, protect the heat transfer tube 3, and reasonably extend its service life. During the vibration of the heat transfer tube 3, the support plate 802 will be driven, and the support plate 802 will drive the first trapezoidal block 812. The first trapezoidal block 812 will squeeze the two second trapezoidal blocks 810, and the two second trapezoidal blocks 81 0 will move in the direction away from each other after being squeezed and squeeze the spring 811 on one side. The spring 811 can reduce the moving distance of the second trapezoidal block 810, thereby reducing the amplitude of the support plate 802 and reducing the noise generated. The multiple hexagonal holes 805 can form a honeycomb structure, which can not only reduce the weight but also ensure the overall strength of the support plate 802. The setting of the heat insulation material 806 can reduce the heat conduction from the heat transfer tube 3 to the support assembly 8, and reduce the thermal stress of the support assembly 8. If it is necessary to replace the rubber pad 902, first use a flat-blade screwdriver to insert it into the horizontal groove at one end of the connecting bolt 904 and rotate it counterclockwise to make one end of the connecting bolt 904 protrude, and then pull the connecting bolt 904 outward to pull out the arc plate 901 for replacement.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe support structure for a shell and tube heat exchanger, comprising a shell (1), characterized in that: Tube sheets (2) are fixedly provided on both sides of the shell (1), a plurality of heat transfer tubes (3) are provided between the two tube sheets (2), a plurality of baffles (4) are provided on the plurality of heat transfer tubes (3), the baffles (4) are fixedly connected to the inner wall of the shell (1), a tube box (5) is provided at both ends of the shell (1), a connecting pipe (6) is provided on the top and bottom of the shell (1) and the tube box (5), two supports (7) are fixedly provided on the bottom of the shell (1), and a support assembly (8) is provided inside the shell (1); The support assembly (8) comprises a plurality of support seats (801) fixedly connected to the inner wall of the shell (1) and a support plate (802) movably connected to the heat transfer tube (3); a plurality of through holes (803) are provided on the support plate (802); the through holes (803) are adapted to the heat transfer tube (3); a plurality of first trapezoidal blocks (812) are provided on the outside of the support plate (802); a mounting groove (808) is provided on one side of the support seat (801) close to the support plate (802); two second trapezoidal blocks (810) are movably provided in the mounting groove (808); The support plate (802) is provided with a plurality of hexagonal holes (805) and mounting holes, a heat insulating material (806) is provided in the mounting holes, a slot (804) is provided in the through hole (803), and a buffer component (9) is provided in the slot (804); The buffer assembly (9) comprises an inserting strip (903) plugged into the slot (804); an arc-shaped plate (901) is fixedly provided at the bottom of the inserting strip (903); a rubber pad (902) is fixedly provided at the bottom of the arc-shaped plate (901); the rubber pad (902) is fitted with the heat transfer tube (3); and a connecting bolt (904) is movably provided on the inserting strip (903).

2. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: The support (7) is formed by assembling two vertical plates and one horizontal plate, the tops of the two vertical plates are fixedly connected to the bottom of the shell (1), the bottoms of the two vertical plates are fixedly connected to the top of the horizontal plate, and the bottom of the horizontal plate is fixedly provided with an anti-slip pad.

3. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: A plurality of groups of limiting plates (807) are fixedly provided on the outside of the support plate (802); the first trapezoidal block (812) is located between two limiting plates (807); and two limiting frames (809) are fixedly provided on a side of the support seat (801) close to the first trapezoidal block (812); the limiting plates (807) and the limiting frames (809) are movably connected.

4. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: Limiting grooves are provided on the inner walls on both sides of the installation groove (808), and limiting blocks are fixedly provided on both sides of the second trapezoidal block (810), and the limiting blocks and the limiting grooves are movably connected. Springs (811) are fixedly provided on the sides of the two second trapezoidal blocks (810) facing away from each other, and the ends of the two springs (811) facing away from each other are respectively fixedly connected to the inner walls of the installation groove (808).

5. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: The two second trapezoidal blocks (810) are each provided with an inclined surface on one side thereof, and the first trapezoidal block (812) is provided with an inclined surface on both sides thereof. The inclined surfaces on both sides of the first trapezoidal block (812) are parallel to the inclined surfaces on one side of the two second trapezoidal blocks (810).

6. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: The number of the support seats (801) is four, and the four support seats (801) are arranged in a circular equidistant array.

7. The pipe support structure for a shell and tube heat exchanger according to claim 1, characterized in that: The insert strip (903) is provided with a fixing hole (905), the fixing hole (905) is formed by an internal thread hole and a receiving hole, the hole diameter of the receiving hole is larger than the hole diameter of the internal thread hole, and the connecting bolt (904) is compatible with the mounting hole.

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