Distributor structure

Abstract

The invention relates to a distributor structure which comprises a tube plate and an upper sealing head, the top of the upper sealing head is provided with a medium inlet tube, a distributor is arranged above the tube plate, and the distributor comprises a lower distribution disc, a lower check ring, a plurality of first connecting assemblies, an upper distribution disc, an upper check ring and a plurality of second connecting assemblies. The lower distribution disc is installed on the pipe plate through a first connecting assembly, the upper distribution disc is installed on the lower distribution disc through a second connecting assembly, the bottom of the medium inlet pipe extends into the upper containing cavity, an anti-scour baffle is arranged at the bottom of the medium inlet pipe, upper distribution disc small holes are formed in the upper distribution disc, and lower distribution disc small holes are formed in the lower distribution disc. The lower distribution disc is provided with lower distribution disc small holes, the tube plate is provided with heat exchange tube holes, the free tail ends of the upper portions of the heat exchange tubes are welded in the heat exchange tube holes of the tube plate, the projections of the lower distribution disc small holes and the heat exchange tubes on the plane perpendicular to the central axis are arranged in the mode that six lower distribution disc small holes surround one heat exchange tube, and therefore media can be evenly distributed.

Description

[Technical field]

[0001] The invention relates to the field of heat exchangers, and in particular to a distributor structure. [Background technology]

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger plays an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler.

[0003] The shell and tube heat exchanger is mainly composed of shell, tube bundle, tube sheet and head. The shell is mostly circular, with parallel tube bundles or spiral tubes installed inside. Both ends of the tube bundle are fixed to the tube sheet. The two fluids that exchange heat in the shell and tube heat exchanger, one flows inside the tube, and its travel is called the tube side; the other flows outside the tube, and its travel is called the shell side. The wall of the tube bundle is the heat transfer surface.

[0004] See also Figure 1 , Figure 1 It is a shell and tube heat exchanger in the prior art. The medium in which gas and liquid coexist enters the equipment 2' from the upper inlet pipe 1', and then flows directly into the heat exchange tube for heat exchange after passing through the anti-impact baffle 3'. The defects of this structure are: 1. The medium is not evenly distributed after entering the heat exchange tube, which reduces the heat exchange efficiency. Therefore, we think about how to make the medium enter the heat exchange tube evenly, and thus propose this distributor structure in this application. [Summary of the invention]

[0005] In order to solve the above problems, an object of the present invention is to provide a distributor structure that can distribute the medium evenly.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a distributor structure, comprising: a tube sheet and an upper head, the top of the upper head is provided with a medium inlet pipe, and the top of the tube sheet is provided with a distributor, the distributor comprises: a lower distribution plate, a lower retaining ring, a plurality of first connecting components, an upper distribution plate, an upper retaining ring and a plurality of second connecting components, the lower retaining ring is welded with the lower distribution plate to form a lower receiving chamber, the lower distribution plate is installed on the tube sheet through a plurality of first connecting components, the first connecting component comprises: a first tie rod, a first distance tube and a first nut, the bottom of the first tie rod is welded with the tube sheet, the first distance tube is sleeved on the outside of the first tie rod, the lower distribution plate is provided with a first mounting hole for the first tie rod to pass through, the top of the first tie rod passes through the first mounting hole of the lower distribution plate and is fixed by the first nut, after installation, the lower distribution plate is supported on the first distance tube, the upper retaining ring is welded with the upper distribution plate to form an upper receiving chamber, the upper distribution plate is The second connecting components are installed on the lower distribution plate through several second connecting components, the second connecting components include: a second pull rod, a second distance tube and a second nut, the bottom of the second pull rod is welded to the lower distribution plate, the second distance tube is sleeved on the outside of the second pull rod, the upper distribution plate is provided with a second mounting hole for the second pull rod to pass through, the top of the second pull rod passes through the second mounting hole of the upper distribution plate and is fixed by the second nut, after installation, the upper distribution plate is supported on the second distance tube, the bottom of the medium inlet pipe extends into the upper receiving cavity and the bottom of the medium inlet pipe is provided with an anti-collision baffle, the upper distribution plate is provided with several upper distribution plate holes for the medium to pass through, the lower distribution plate is provided with several lower distribution plate holes for the medium to pass through, the tube sheet is provided with several heat exchange tube holes, the upper free end of the heat exchange tube is welded to the heat exchange tube hole of the tube sheet, the projection of the lower distribution plate hole and the heat exchange tube on the plane perpendicular to the central axis is six lower distribution plate holes arranged around one heat exchange tube.

[0007] Preferably, a distributor structure in the present invention is further configured as follows: the plurality of small holes on the upper distribution plate are evenly arranged and the diameter of the small holes on the upper distribution plate is 8 mm.

[0008] Preferably, a distributor structure in the present invention is further configured as follows: the diameter of the small holes in the lower distribution plate is 13 mm.

[0009] Preferably, a distributor structure in the present invention is further configured as follows: a rib plate is provided below the lower distribution plate.

[0010] Preferably, a distributor structure in the present invention is further configured as follows: the lower distribution plate, the lower retaining ring, the plurality of first connection components, the upper distribution plate, the upper retaining ring and the plurality of second connection components are all made of stainless steel.

[0011] Preferably, a distributor structure in the present invention is further configured as follows: the diameter of the upper retaining ring is smaller than the diameter of the lower retaining ring.

[0012] Preferably, a distributor structure in the present invention is further configured as follows: the height of the upper retaining ring is higher than the height of the lower retaining ring.

[0013] Preferably, a distributor structure in the present invention is further configured as follows: the first nut and the lower distribution plate are spot welded at three evenly distributed points.

[0014] Preferably, a distributor structure in the present invention is further configured as follows: the second nut and the upper distribution plate are spot welded at three evenly distributed points.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the distributor in the present invention has a simple structure and is easy to install. The medium enters the equipment through the upper medium inlet pipe and first hits the anti-collision baffle. The anti-collision baffle can prevent the medium from directly rushing to the upper distribution plate, so that the medium can slowly fall on the upper distribution plate. Since there are many small holes with a diameter of 8 mm evenly distributed on the upper distribution plate, the medium can be evenly distributed to avoid the formation of fluid vortexes, so that the medium can evenly fall on the lower distribution plate. Since the projections of the small holes of the lower distribution plate and the heat exchange tubes on the plane perpendicular to the central axis are six small holes of the lower distribution plate arranged around one heat exchange tube, the medium can evenly fall on the periphery of each heat exchange tube to avoid the formation of a steam drum. After the medium enters the heat exchange tube, it is evenly distributed, thereby improving the heat exchange efficiency.

Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a structure in which no distributor is provided in the prior art.

[0017] Figure 2 It is a schematic diagram of the distributor structure in the present invention.

[0018] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0019] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0020] Figure 5 Schematic diagram of the structure of the small holes on the upper distribution plate.

[0021] Figure 6 Schematic diagram of the structure of the lower distribution plate.

[0022] Figure 7 It is a schematic diagram of the projection structure of the small holes of the lower distribution plate and the heat exchange tubes on the plane perpendicular to the central axis.

[0023] Figure 1Middle: 1`, inlet pipe, 2`, equipment, 3`, anti-collision baffle.

[0024] Figures 2 to 7 In: 1. tube sheet, 2. upper head, 3. medium inlet pipe, 4. distributor, 40. lower distribution plate, 400. first mounting hole, 41. lower retaining ring, 42. first connecting assembly, 420. first pull rod, 421. first distance pipe, 422. first nut, 43. upper distribution plate, 44. upper retaining ring, 45. second connecting assembly, 450. second pull rod, 451. second distance pipe, 452. second nut, 46. lower receiving chamber, 47. upper receiving chamber, 48. small hole of upper distribution plate, 49. small hole of lower distribution plate, 5. anti-impact baffle, 6. rib plate, 7. heat exchange tube. [Specific implementation method]

[0025] The distributor structure of the present invention is further described in detail below through specific embodiments.

[0026] Ginseng Figures 2 to 7As shown, a distributor structure comprises: a tube sheet 1 and an upper head 2, a medium inlet pipe 3 is provided on the top of the upper head 2, a distributor 4 is provided above the tube sheet 1, and the distributor 4 comprises: a lower distribution plate 40, a lower retaining ring 41, a plurality of first connection components 42, an upper distribution plate 43, an upper retaining ring 44 and a plurality of second connection components 45, the diameter of the upper retaining ring 44 is smaller than the diameter of the lower retaining ring 41, and the height of the upper retaining ring 44 is higher than the height of the lower retaining ring 41. In this embodiment, the lower distribution plate 40, the lower retaining ring 41, the plurality of first connection components 42, the upper distribution plate 43, the upper retaining ring 44 and the plurality of second connection components 45 are all made of stainless steel, and therefore have good corrosion resistance. The lower retaining ring 41 is welded to the lower distribution plate 40 to form a lower receiving cavity 46. The lower distribution plate 40 is installed on the tube plate 1 through a plurality of first connecting components 42. The first connecting component 42 includes: a first tie rod 420, a first distance tube 421 and a first nut 422. The bottom of the first tie rod 420 is welded to the tube plate 1, and the first distance tube 421 is sleeved on the outside of the first tie rod 420. The lower distribution plate 40 is provided with a first mounting hole 400 for the first tie rod 420 to pass through. The top of the first tie rod 420 passes through the first mounting hole 400 of the lower distribution plate 40 and is fixed by the first nut 422. The first nut 422 and the lower distribution plate 40 are spot welded with three evenly distributed points. After installation, the lower distribution plate 40 is supported on the first spacing tube 421, and the upper retaining ring 44 is welded to the upper distribution plate 43 to form an upper receiving chamber 47. The upper distribution plate 43 is installed on the lower distribution plate 40 through a plurality of second connecting components 45. The second connecting component 45 includes: a second pull rod 450, a second spacing tube 451 and a second nut 452. The bottom of the second pull rod 450 is welded to the lower distribution plate 40, and the second spacing tube 451 is sleeved on the outside of the second pull rod 450. The upper distribution plate 43 is provided with a second mounting hole (not shown) for the second pull rod 450 to pass through. The top of the second pull rod 450 passes through the second mounting hole of the upper distribution plate 43 and is fixed by the second nut 452. The second nut 452 and the upper distribution plate 43 are spot welded with three points evenly distributed. After installation, the upper distribution plate 43 is supported on the second distance tube 451, the bottom of the medium inlet pipe 3 extends into the upper receiving chamber 47 and the bottom of the medium inlet pipe 3 is provided with an anti-collision baffle 5, and the upper distribution plate 43 is provided with a plurality of upper distribution plate holes 48 for the medium to pass through, and the plurality of upper distribution plate holes 48 are evenly arranged and the diameter of the upper distribution plate holes 48 is 8mm. The lower distribution plate 40 is provided with a plurality of lower distribution plate holes 49 for the medium to pass through, and the diameter of the lower distribution plate holes 49 is 13mm. A rib plate 6 is provided below the lower distribution plate 40 to increase the structural strength of the lower distribution plate 40.The tube sheet 1 is provided with a plurality of heat exchange tube holes (not shown in the figure), and the upper free end of the heat exchange tube 7 is welded to the heat exchange tube hole of the tube sheet 1. The projections of the lower distribution plate holes 49 and the heat exchange tube 7 on a plane perpendicular to the central axis are six lower distribution plate holes 49 arranged around one heat exchange tube 7.

[0027] In summary, the distributor in the present invention has a simple structure and is easy to install. The medium enters the equipment through the upper medium inlet pipe 3 and first hits the anti-collision baffle 5. The anti-collision baffle 5 can prevent the medium from directly rushing to the upper distribution plate 43, so that the medium can slowly fall on the upper distribution plate 43. Since there are many small holes with a diameter of 8 mm evenly distributed on the upper distribution plate 43, the medium can be evenly distributed to avoid the formation of fluid vortexes, so that the medium can evenly fall on the lower distribution plate 40. Since the projections of the small holes 49 of the lower distribution plate and the heat exchange tubes 7 on the plane perpendicular to the central axis are six small holes 49 of the lower distribution plate arranged around one heat exchange tube 7, the medium can evenly fall on the periphery of each heat exchange tube 7 to avoid the formation of a steam drum. After the medium enters the heat exchange tube 7, it is evenly distributed, thereby improving the heat exchange efficiency.

[0028] The above-mentioned embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A distributor structure, comprising: The tube sheet and the upper head, the top of the upper head is provided with a medium inlet pipe, which is characterized in that: a distributor is provided above the tube sheet, the distributor comprises: a lower distribution plate, a lower retaining ring, a plurality of first connecting components, an upper distribution plate, an upper retaining ring and a plurality of second connecting components, the lower retaining ring is welded with the lower distribution plate to form a lower receiving chamber, the lower distribution plate is installed on the tube sheet through a plurality of first connecting components, the first connecting component comprises: a first tie rod, a first distance tube and a first nut, the bottom of the first tie rod is welded with the tube sheet, the first distance tube is sleeved on the outside of the first tie rod, the lower distribution plate is provided with a first mounting hole for the first tie rod to pass through, the top of the first tie rod passes through the first mounting hole of the lower distribution plate and is fixed by the first nut, after installation, the lower distribution plate is supported on the first distance tube, the upper retaining ring is welded with the upper distribution plate to form an upper receiving chamber, the upper distribution plate is installed on On the lower distribution plate, the second connecting assembly includes: a second pull rod, a second distance tube and a second nut. The bottom of the second pull rod is welded to the lower distribution plate, and the second distance tube is sleeved on the outside of the second pull rod. The upper distribution plate is provided with a second mounting hole for the second pull rod to pass through. The top of the second pull rod passes through the second mounting hole of the upper distribution plate and is fixed by the second nut. After installation, the upper distribution plate is supported on the second distance tube. The bottom of the medium inlet pipe extends into the upper receiving cavity and the bottom of the medium inlet pipe is provided with an anti-collision baffle. The upper distribution plate is provided with a plurality of upper distribution plate holes for the medium to pass through, and the lower distribution plate is provided with a plurality of lower distribution plate holes for the medium to pass through. The tube sheet is provided with a plurality of heat exchange tube holes, and the upper free end of the heat exchange tube is welded to the heat exchange tube hole of the tube sheet. The projection of the lower distribution plate hole and the heat exchange tube on the plane perpendicular to the central axis is six lower distribution plate holes arranged around one heat exchange tube.

2. A distributor structure according to claim 1, characterized in that: The plurality of small holes on the upper distribution plate are evenly arranged and the diameter of the small holes on the upper distribution plate is 8 mm.

3. A distributor structure as claimed in claim 1, characterized in that: The diameter of the small hole of the lower distribution plate is 13 mm.

4. A distributor structure according to claim 1, characterized in that: A rib plate is provided below the lower distribution plate.

5. A distributor structure according to claim 1, characterized in that: The lower distribution plate, the lower retaining ring, the plurality of first connection components, the upper distribution plate, the upper retaining ring and the plurality of second connection components are all made of stainless steel.

6. A distributor structure according to claim 1, characterized in that: The diameter of the upper retaining ring is smaller than the diameter of the lower retaining ring.

7. A distributor structure according to claim 1, characterized in that: The height of the upper retaining ring is higher than that of the lower retaining ring.

8. A distributor structure according to claim 1, characterized in that: The first nut and the lower distribution plate are spot welded at three evenly distributed points.

9. A distributor structure according to claim 1, characterized in that: The second nut and the upper distribution plate are spot welded at three evenly spaced points.

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