CN110567313A - Solid particle redistribution device with adjustable distribution plate inclination angle - Google Patents
Solid particle redistribution device with adjustable distribution plate inclination angle Download PDFInfo
- Publication number
- CN110567313A CN110567313A CN201910817987.9A CN201910817987A CN110567313A CN 110567313 A CN110567313 A CN 110567313A CN 201910817987 A CN201910817987 A CN 201910817987A CN 110567313 A CN110567313 A CN 110567313A
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- Prior art keywords
- distribution plate
- distribution
- inclination angle
- seal head
- front seal
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D13/00—Heat-exchange apparatus using a fluidised bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/20—Fastening; Joining with threaded elements
Abstract
The invention belongs to the technical field of fluidized bed heat exchange, and discloses a solid particle redistribution device capable of adjusting the inclination angle of a distribution plate, which comprises the distribution plate arranged in a front seal head, wherein the distribution plate is of an arched sheet structure formed by chord edges and arc edges corresponding to the chord edges, and is provided with a plurality of rows of distribution holes which are uniformly distributed in concentric circles; the middle point of the arc edge of the distribution plate is hooked and connected to the bottom of the inlet connecting pipe through a connecting hook, and the chord edge of the distribution plate is connected to the adjusting shaft through a connecting chain; the adjusting shaft is arranged at the top of the front seal head through a spiral fastener; when the adjusting shaft moves up and down, the distribution plate is driven by the connecting chain, so that the distribution plate rotates by taking a straight line which passes through the middle point of the arc edge of the distribution plate and is parallel to the chord edge of the distribution plate as an axis, and the inclination angle adjustment of the distribution plate is realized. The invention can adjust the inclination angle of the distribution plate on line according to different working conditions, improve the deposition condition of particles in the front seal head, reduce the uneven distribution degree of the particles in the tube bundle, enhance the turbulent motion of fluid, and further strengthen the heat transfer and the scale prevention and removal.
Description
Technical Field
The invention belongs to the technical field of fluidized bed heat exchange, and particularly relates to a solid particle redistribution device used in a front seal head.
Background
The scaling problem is a ubiquitous problem in the industrial heat exchange process and often becomes a bottleneck restricting the production process. The generation of dirt increases heat transfer resistance, reduces heat transfer efficiency, increases energy consumption and environmental pollution, and even influences the normal operation of production in serious cases, thereby causing huge economic loss and energy waste. At present, some corresponding solving measures such as increasing flow rate, reverse circulation, adopting scale inhibitor and the like are provided aiming at the scaling problem of heat exchange equipment. However, these methods cannot fundamentally solve the problem of fouling, and also increase energy consumption, decrease heat transfer efficiency, or aggravate environmental pollution.
The fluidized bed heat exchange anti-scaling energy-saving technology can effectively solve the problems of enhanced heat transfer and scale prevention of heat exchange equipment, and is well applied to heat exchange equipment such as evaporators, preheaters, boilers and the like. The technology combines the fluidized bed technology and the heat exchange process, and the laminar bottom layer near the thin-wall surface is damaged and sheared through the shearing and collision of the fluidized solid particles to the wall surface, so that the heat transfer resistance is reduced, and the heat transfer efficiency is improved; meanwhile, the induction period of scaling is prolonged, so that the purposes of online scale prevention and removal and heat transfer enhancement are achieved.
The circulating fluidized bed can be classified into an ascending bed, a horizontal bed and a descending bed according to the difference of the flow direction. Wherein, the horizontal circulating fluidized bed heat exchanger has wide application prospect in the industries of petrochemical industry and the like. In the horizontal bed, due to the action of gravity, the particles are unevenly distributed in the horizontal tube bundle, which affects the interaction among the particles, between the particles and the fluid and between the particles and the wall surface, and further affects the enhanced heat transfer and the scale prevention and removal effects of the horizontal circulating fluidized bed heat exchanger. Therefore, it is of great importance to improve the distribution of the particles in the tube bundle of the horizontal circulating fluidized bed heat exchanger.
Disclosure of Invention
the invention provides a solid particle redistribution device capable of adjusting the inclination angle of a distribution plate, which is arranged in a front seal head, can adjust the inclination angle of the distribution plate on line according to different working conditions, improves the deposition condition of particles in the front seal head, reduces the uneven distribution degree of the particles in a tube bundle, enhances the turbulent motion of fluid and further enhances heat transfer and scale prevention and removal.
The invention is realized by the following technical scheme:
A solid particle redistribution device capable of adjusting the inclination angle of a distribution plate comprises the distribution plate arranged in a convex front end enclosure, wherein the front end enclosure is connected with an inlet connecting pipe; the distribution plate is of an arched sheet structure consisting of chord edges and arc edges corresponding to the chord edges, and is provided with a plurality of rows of distribution holes which are uniformly distributed in concentric circles; the middle point of the arc edge of the distribution plate is connected to the bottom of the inlet connecting pipe through a connecting hook in a hooking manner, and the chord edge of the distribution plate is connected to the adjusting shaft through a connecting chain; the adjusting shaft is mounted at the top of the front seal head through a spiral fastener, and the adjusting shaft penetrates through the top of the front seal head and can move up and down; when the adjusting shaft moves up and down, the distribution plate is driven by the connecting chain to rotate by taking a straight line which passes through the middle point of the arc edge of the distribution plate and is parallel to the chord edge of the distribution plate as an axis, so that the inclination angle of the distribution plate is adjusted.
Further, the inclination angle range of the distribution plate isWherein, alpha is the inclination angle of the distribution plate, D is the diameter of the front seal head, and DiThe diameter of the inlet connecting pipe is defined, and H is the total depth of the front seal head; the inclination angle of the distribution plate is negative when the distribution plate inclines downwards, and the inclination angle of the distribution plate is positive when the distribution plate inclines upwards.
Further, the arc edge diameter D of the distribution plate should satisfy 0.5D < D < 0.64D, and H < H; and D is the diameter of the arc edge of the distribution plate, D is the diameter of the front seal head, H is the arc height of the distribution plate, and H is the total depth of the front seal head.
Furthermore, the distribution holes are holes with uniform apertures or holes with variable apertures, and the aperture range is 3-12 mm; when the distribution holes are opened with variable hole diameters, the diameters of the distribution holes on each row of concentric circles are gradually reduced from inside to outside along the radial direction of the distribution plate.
Furthermore, the open pore areas of the distribution holes are 4-8 concentric arcs with the circle center of the distribution plate as the circle center, the distance between the arcs is 8-20 mm, and the included angle between two adjacent distribution holes on the same arc ranges from 15 degrees to 60 degrees.
Further, the connecting chain includes two, two the connecting chain lower extreme connect respectively in two symmetric positions on the chord limit of distributing plate, two the connecting chain upper end is connected in three hole gaskets, three hole gaskets with its two limit portion holes respectively with two the connecting chain is connected, three hole gaskets with its centre bore suit in on the regulating spindle, it is spacing that the fixed end cap of regulating spindle bottom end is spacing three hole gaskets.
Furthermore, the upper end of the adjusting shaft is connected with an angle adjusting driving part.
Furthermore, a threaded passage for the adjusting shaft to pass through penetrates through the spiral fastener, the adjusting shaft is a full-thread stud, and the adjusting shaft moves up and down when rotating; the spiral fastener and the connection part of the front seal head form sealing.
The invention has the beneficial effects that:
The solid particle redistribution device is simple in structure, low in investment and convenient to process, and after the solid particle redistribution device is installed on the front end enclosure of the horizontal tubular heat exchanger, the deposition condition of particles in the front end enclosure can be improved under different working conditions, so that the redistribution condition of the particles entering the tube bundle can be improved, more particles can enter the upper part of the tube bundle, the non-uniform distribution degree of the particles in the tube bundle is reduced, and the turbulence of fluid is enhanced. The invention can adjust the distribution plate to the optimal inclination angle on line according to different working conditions, and the adjusting range is wide, and is-35 to 50 degrees; when the distribution plate is adjusted to the optimal inclination angle, the improvement degree of the particle distribution can reach 41-90 percent. The heat transfer enhancement, the scale prevention and removal technology is combined with the three-phase flow enhancement heat transfer and scale removal technology, the heat transfer enhancement, scale prevention and removal effects can be further achieved, and the method has an important reference value in industrial application.
drawings
FIG. 1 is a schematic view of the structure of a solid particle redistribution device with adjustable distribution plate inclination according to the present invention;
in fig. 1: 1. a front end enclosure; 2. a connecting hook; 3. an inlet connection pipe; 4. a distribution plate; 5. a connecting chain; 6. a screw fastener; 7. an angle adjustment drive member; 8. an adjustment shaft; 9. a three-hole gasket; 10. a plug;
3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
In fig. 2: 11. welding the part; 12. an external thread; 13. an internal thread; 14. sealing gaskets; d. a threaded passage.
FIG. 3 is a schematic diagram of the distribution plate structure of the apparatus for redistribution of solid particles with adjustable inclination of the distribution plate according to the present invention;
In fig. 3: 4. a distribution plate; a. a connecting hook mounting hole; b. and connecting the chain mounting holes.
FIG. 4 is a schematic view of the connection of the components of the apparatus for redistribution of solid particles with adjustable distribution plate inclination of the present invention;
In fig. 4: 4. a distribution plate; 5. a connecting chain; 7. an angle adjustment drive member; 8. adjusting shaft, 9, three-hole gasket, 10 and plug; b. connecting chain mounting holes; c. the adjusting shaft is connected with the hole.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
As shown in figure 1, the invention discloses a solid particle redistribution device capable of adjusting the inclination angle of a distribution plate, which comprises a distribution plate 4, a connecting hook 2, a connecting chain 5, a spiral fastener 6, an angle adjusting driving component 7, an adjusting shaft 8, a three-hole gasket 9 and a plug 10. The device is arranged in a front seal head 1, the front seal head 1 is a convex seal head, and the front seal head 1 is connected with an inlet connecting pipe 3.
As shown in fig. 3, the distribution plate 4 is typically made of a rigid material, such as perspex, stainless steel, etc., which is wear and corrosion resistant. The distribution plate 4 is of a sheet structure, and the thickness of the distribution plate is usually within the range of 1-5 mm; the shape is an arch formed by the chord edge and the corresponding arc edge. The inclination angle of the distribution plate 4, i.e. the included angle between the distribution plate 4 and the horizontal plane, is theoretically adjustable within the range ofWherein, alpha is the inclination angle of the distribution plate 4, D is the diameter of the front seal head 1, and DiThe diameter of the inlet connecting pipe 3 is set, and H is the total depth of the front seal head 1; the distribution plate 1 inclines downwards to be negative and upwards to be positive; the adjustable range in the actual engineering is-35 to 50 degrees. The principle of dimensioning the distribution plate 4 is: the bow shape of the distribution plate 4 is smaller than the section of the smallest front seal head 1 in the inclination angle adjusting range, and the size is 0.5D < D < D.cos | alphamaxI.e. D is more than 0.5D and less than 0.64D, H is less than H; wherein D is the diameter of the arc edge of the distribution plate 4, D is the diameter of the front end enclosure 1, H is the arc height of the distribution plate 4, and H is the total depth of the front end enclosure 1.
In order to prevent the distribution plate 4 from blocking particles from entering the tube bundle below, a plurality of rows of distribution holes which are uniformly distributed in concentric circles are formed in the distribution plate 4. According to the total depth of the front seal head 1 and the angle range of the distribution plate 4 needing to be adjusted, the distribution holes can be uniformly opened or opened with variable aperture, and the aperture range is 3-12 mm. When the aperture is changed to open the hole, the diameter of the distribution holes on each row of concentric circles is gradually reduced from inside to outside along the radial direction of the distribution plate 4. The open pore area is 4 ~ 8 concentric circular arcs with the 4 centre of a circle of distribution plate as the centre of a circle, and the circular arc interval is 8 ~ 20mm, and the contained angle scope between two adjacent distribution holes on same circular arc is 15 ~ 60.
Connecting hook mounting hole a has been seted up to the arc limit mid point department of distributing plate 4, and connecting hook mounting hole a shape is straight notch, and length is 7 ~ 15mm, and width is 2 ~ 3mm, and the distance of trompil apart from the arc limit is 2 ~ 4 mm. The arc edge of distributing plate 4 links to each other with coupling hook 2 with coupling hook mounting hole an, and coupling hook 2 is circular arc flat crotch structure, and the material is rigid material such as stainless steel, and has certain width for reinforcing distributing plate 4's equilibrium, and 7 ~ 15mm wide, 1 ~ 2mm thick, and the circular arc diameter of the hook body is 4 ~ 10mm, installs 3 bottoms are taken over in the entry that head 1 meets in the front.
As shown in a combined figure 4, two connecting chain mounting holes b are formed in one side of the chord edge of the distribution plate 4, the connecting chain mounting holes b are formed in two symmetrical positions 2-4 mm away from the chord edge, the distance between the two mounting holes is 0.6-0.8 times of the chord length of the chord edge of the distribution plate 4, and the aperture is 3-6 mm. The chord side of the distribution plate 4 is connected with the lower end of the connecting chain 5 through two connecting chain mounting holes b. The upper end of the connecting chain 5 is connected with a three-hole gasket 9; three hole gaskets 9 link to each other with the lower extreme of regulating shaft 8, and 8 bottom welding end caps 10 of regulating shaft are in order to prevent three hole gaskets 9 landing downwards. The upper part of the adjusting shaft 8 is fixed on the top of the front seal head 1 by a spiral fastener 6; the upper end of the adjusting shaft 8 is connected with an angle adjusting driving part 7.
As shown in fig. 2, the screw fastener 6 is made of rigid materials such as organic glass or stainless steel, and mainly includes a welding portion 11, an external thread 12, and an internal thread 13, the welding portion 11 is directly welded on the top of the front end enclosure 1, the external thread 12 is welded on the upper portion of the welding portion 11, the internal thread 13 is in threaded connection with the external thread 12, and a thread passage d is penetrated through the axial positions of the welding portion 11, the external thread 12, and the internal thread 13 and is communicated with a screw hole on the top of the front end. The adjusting shaft 8 passes through the threaded passage d and the spiral hole at the top of the front seal head 1 and can move up and down. A sealing gasket 14 is added in the spiral fastener 6, and vacuum silicone grease is coated to drain and seal, so that the air tightness of the front seal head 1 is ensured.
The connecting chain 5 is made of wear-resistant and corrosion-resistant materials such as stainless steel and can be made of iron chains, steel wire ropes and the like, and the diameter of the connecting chain is 4-10 mm. The inclination angle of the distribution plate 4 is increased by lifting the adjusting shaft 8 upwards, when the distribution plate 4 is inclined upwards to the maximum angle, the lower end of the adjusting shaft 4 is positioned at the highest position, and the longest length of the connecting chain 5 is determined aswherein l is the longest length of the connecting chain 5, l' is the vertical distance between the spiral hole at the top of the front seal head 1 and the projection of the spiral hole at the bottom of the front seal head 1, and diThe diameter of the inlet pipe 3, h is the arch height of the distribution plate 4, alphau,maxThe maximum angle at which the distribution plate 4 is inclined upward, and h' is the horizontal distance between the adjustment shaft 8 and the connection hook 5.
the adjusting shaft 8 is a full-thread stud, the diameter of the adjusting shaft is 5-10 mm, the adjusting shaft is made of stainless steel, the upper end of the adjusting shaft penetrates through a spiral hole in the top of the front end enclosure 1 and is installed on the front end enclosure 1 through a spiral fastener 6, and the upper end of the adjusting shaft 8 is connected with the angle adjusting driving part 7. When the distribution plate 4 is inclined downwards to the maximum angle, the lower end of the adjusting shaft 8 is positioned at the lowest part, and the shortest length of the adjusting shaft 8 is determined asWherein, L is the shortest length of the adjusting shaft 8, L' is the vertical distance between the spiral hole at the top of the front seal head 1 and the projection of the spiral hole at the bottom of the front seal head 1, and diThe diameter of the inlet pipe 3, h is the arch height of the distribution plate 4, alphad,maxH' is the horizontal distance between the adjusting shaft 8 and the connecting hook 5, which is the maximum angle of downward inclination of the distributing plate 4.
The three-hole gasket 9 is made of organic glass or stainless steel, has a diameter of 14-30 mm, and is provided with a central large hole and two edge small holes. The central big hole is a shaft connecting hole, the diameter of the central big hole is slightly larger than the diameter of the adjusting shaft 8 and is 7-12 mm. Two limit portion apertures are 5 connecting holes of connecting chain, and the position is mutual symmetry, and the diameter is 3 ~ 6mm, and the trompil position is apart from 9 edges 2 ~ 4mm of three hole gaskets.
End cap 10 is the cake shape, and the welding is in order to prevent that three hole gasket 9 from droing in 8 bottoms of regulating spindle, and end cap 10 diameter is less than the distance between two limit portion apertures of three hole gasket 9, is 9 ~ 14mm, and thickness is 2 ~ 4 mm.
The angle adjusting driving part 7 can be driven by a manual rotating handle, a motor and the like, and is made of stainless steel and other materials.
the angle adjusting driving component 7 drives the adjusting shaft 8 to rotate around the screw thread to move up and down, the three-hole gasket 9 at the bottom end of the adjusting shaft 8 and the connecting chain 5 drive the distribution plate 4, and the distribution plate 4 rotates by taking a straight line which passes through the middle point of the arc edge of the distribution plate 4 and is parallel to the chord edge of the distribution plate 4 as an axis, so that the aim of adjusting the inclination angle of the distribution plate 4 is fulfilled.
The invention was studied using the following experimental examples: pipe diameter d of inlet connecting pipe 3ithe pipe bundle is arranged in a square shape, five rows of pipelines are arranged from bottom to top, the distribution plate 4 is designed to incline downwards to the pipe bottom of the lowest row of pipelines and incline upwards to the pipe bottom of the highest row of pipelines, namely the adjustable inclination angle range of the distribution plate 4 is-34-42 degrees (the downward inclination is negative and the upward inclination is positive).
Distribution plate 4 material is the stainless steel, the shape is the bow-shaped, the circular arc diameter is 188mm, high h 94mm, board thickness is 2mm, the trompil area is 6 concentric circular arcs that use the distribution plate centre of a circle as the centre of a circle, the radius of circular arc place circle is 20mm from inside to outside in proper order, 40mm, 58mm, 72mm, 82mm, 90mm, the aperture is 10mm from inside to outside in proper order, 10mm, 8mm, 6mm, 4mm, 4mm, except that contained angle is 60 on the inlayer circular arc between hole and the hole, contained angle is 30 between the hole on the other circular arcs and the hole. The length of the connecting hook mounting hole a at the middle point of the arc edge is 10mm, and the width of the connecting hook mounting hole a is 2 mm. The aperture of the connecting chain mounting hole b of the chord edge is 4 mm.
The connecting hook 2 is made of stainless steel, the diameter of the hook body is 10mm, the width of the hook body is 10mm, and the thickness of the hook body is 2 mm. The connecting chain 5 is made of stainless steel, the length l is 100mm, and the diameter is 4 mm. The adjusting shaft 8 is made of stainless steel, the diameter is 6mm, and the length L is 150 mm. The horizontal distance h' between the adjusting shaft 8 and the connecting hook 2 is 66 mm. The diameter of the spiral hole at the top of the front seal head 1 is 6 mm. The angle adjusting driving part 7 adopts a manual rotating handle, is made of stainless steel and has the length of 50 mm. The three-hole gasket 9 is made of organic glass, the diameter of the three-hole gasket is 28mm, the thickness of the three-hole gasket is 5mm, the diameter of a central large hole is 8mm, the diameter of small holes in the edge portion of the three-hole gasket is 4mm, and the distance between the small holes and the edge of the three-hole gasket is 2 mm. The plug 10 is made of stainless steel and is in a round cake shape, the diameter of the round cake shape is 14mm, and the thickness of the round cake shape is 2 mm.
In the experiment, when the distribution plate 4 is inclined towards the bottoms of the five rows of pipelines respectively, the included angles between the distribution plate 4 and the horizontal plane, namely the inclination angles of the distribution plate 4 are respectively recorded as-34 degrees, -16 degrees, -6 degrees, -27 degrees and 42 degrees (the downward inclination is negative, and the upward inclination is positive). In the experiment, the angle adjusting driving part 7 drives the adjusting shaft 8 to rotate around the screw thread to move up and down, the three-hole gasket 9 at the bottom end of the adjusting shaft 8 and the connecting chain 5 drive the distribution plate 4 to rotate by taking a straight line which passes through the middle point of the arc edge of the distribution plate 4 and is parallel to the chord edge of the distribution plate 4 as an axis, and the inclination angle of the distribution plate 4 is adjusted to a fixed value.
The distribution plate 4 was experimentally investigated for improving the particle distribution at these five angles, respectively, to determine the solid fraction of particles in the individual tubes in the tube bundle and to calculate the non-uniformity of the particle distribution in the tube bundle. Experimental studies show that compared with a system without the distribution plate 4, the system has the advantages that the uneven distribution of solid particles in the horizontal tube bundle is obviously improved, more particles enter a pipeline above the horizontal tube bundle, and the uneven distribution of the particles is obviously reduced. The study on the particle distribution conditions under different inclination angles of the distribution plate 4 shows that the improvement degree of the particle distribution is firstly increased and then decreased along with the increase of the absolute value of the included angle between the distribution plate 4 and the horizontal plane. In this experiment, when the inclined angle of the distribution plate 4 is 27 °, the improvement effect of the particle distribution is the best, and the uniformity of the particle distribution can be improved by 41% to 90% compared with the system without the distribution plate 4 under a certain circulating flow rate and system solid content rate.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (8)
1. A solid particle redistribution device capable of adjusting the inclination angle of a distribution plate is characterized by comprising the distribution plate arranged in a convex front seal head, wherein the front seal head is connected with an inlet connecting pipe; the distribution plate is of an arched sheet structure consisting of chord edges and arc edges corresponding to the chord edges, and is provided with a plurality of rows of distribution holes which are uniformly distributed in concentric circles; the middle point of the arc edge of the distribution plate is connected to the bottom of the inlet connecting pipe through a connecting hook in a hooking manner, and the chord edge of the distribution plate is connected to the adjusting shaft through a connecting chain; the adjusting shaft is mounted at the top of the front seal head through a spiral fastener, and the adjusting shaft penetrates through the top of the front seal head and can move up and down; when the adjusting shaft moves up and down, the distribution plate is driven by the connecting chain to rotate by taking a straight line which passes through the middle point of the arc edge of the distribution plate and is parallel to the chord edge of the distribution plate as an axis, so that the inclination angle of the distribution plate is adjusted.
2. The apparatus of claim 1, wherein the distribution plate has an angle of inclination ranging from aboutWherein alpha isThe inclination angle of the distribution plate D is the diameter of the front seal head DiThe diameter of the inlet connecting pipe is defined, and H is the total depth of the front seal head; the inclination angle of the distribution plate is negative when the distribution plate inclines downwards, and the inclination angle of the distribution plate is positive when the distribution plate inclines upwards.
3. The apparatus of claim 1, wherein the radius D of the arc of the distribution plate is 0.5D < D < 0.64D, and H < H; and D is the diameter of the arc edge of the distribution plate, D is the diameter of the front seal head, H is the arc height of the distribution plate, and H is the total depth of the front seal head.
4. The solid particle redistribution device capable of adjusting the inclination angle of the distribution plate according to claim 1, wherein the distribution holes are uniform-diameter holes or variable-diameter holes, and the diameter of the holes is 3-12 mm; when the distribution holes are opened with variable hole diameters, the diameters of the distribution holes on each row of concentric circles are gradually reduced from inside to outside along the radial direction of the distribution plate.
5. The solid particle redistribution device capable of adjusting the inclination angle of the distribution plate as claimed in claim 1, wherein the open area of the distribution holes is 4-8 concentric arcs with the center of the distribution plate as the center, the distance between the arcs is 8-20 mm, and the included angle between two adjacent distribution holes on the same arc is 15-60 °.
6. The solid particle redistribution device of claim 1, wherein the connection chain comprises two connection chains, the lower ends of the two connection chains are respectively connected to two symmetrical positions of the chord edge of the distribution plate, the upper ends of the two connection chains are connected to the three-hole gasket, the three-hole gasket is respectively connected with the two connection chains through two edge holes, the three-hole gasket is sleeved on the adjusting shaft through a central hole, and the bottom end of the adjusting shaft is fixed with a plug for limiting the three-hole gasket.
7. The apparatus of claim 1, wherein an angle adjusting driving member is connected to an upper end of the adjusting shaft.
8. The solid particle redistribution device capable of adjusting the inclination angle of the distribution plate as claimed in claim 1, wherein the screw fastener is penetrated with a threaded passage for the adjustment shaft to pass through, the adjustment shaft is a full thread stud, and the adjustment shaft moves up and down when rotating; the spiral fastener and the connection part of the front seal head form sealing.
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| CN201910817987.9A CN110567313B (en) | 2019-08-30 | 2019-08-30 | Solid particle redistribution device with adjustable distribution plate inclination angle |
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| CN110567313B CN110567313B (en) | 2020-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076527A (en) * | 2020-08-13 | 2022-02-22 | 中国石油化工股份有限公司 | Fluidized bed heat exchanger |
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| CN102645113A (en) * | 2011-02-16 | 2012-08-22 | 俞天翔 | Vibratory spiral fluidized horizontal shell-and-tube heat exchanger |
| CN204453910U (en) * | 2015-02-12 | 2015-07-08 | 赵宏伟 | Shaking belt conveyor distributing device |
| CN106595352A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Outer circulating fluidized bed heat exchanger |
| CN106595348A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | No-scaling fluidized bed heat exchanger |
| CN206127230U (en) * | 2016-08-30 | 2017-04-26 | 朱清敏 | Vertical fluidized bed heat transfer device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076527A (en) * | 2020-08-13 | 2022-02-22 | 中国石油化工股份有限公司 | Fluidized bed heat exchanger |
| CN114076527B (en) * | 2020-08-13 | 2024-03-26 | 中国石油化工股份有限公司 | Fluidized bed heat exchanger |
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