Fluidized bed and coal ash tank car for railway based on fluidized bed

Abstract

The invention provides a fluidized bed and a coal ash tank car for a railway based on the fluidized bed, which are used for solving the problems that the volume is small when the existing railway transportation tank car is used for transporting coal ash, so that the carrying capacity each time is low; the horizontal conveying distance of the railway cement tanker cannot meet the long-distance unloading requirement, so that the residual amount after unloading is high, and the transportation economy is poor. The fluidized bed is supported by the three supporting units, the two partition plates and the two end sockets to form a large-dip-angle fluidized bed structure with multiple gas bins and multiple material bins, and the first through hole and the second through hole in the fluidized bed are supported and shaken through the fluidization cloth, so that residual powder in a tank can be fully fluidized, and the fluidization efficiency is improved. The problem of excessive residual powder in the tank during unloading is effectively solved, and the complete unloading rate of a vehicle is greatly improved.

Description

Technical Field

[0001] The invention relates to a railway transport tank car, in particular to a fluidized bed and a railway fly ash tank car based on the fluidized bed. Background Art

[0002] Fly ash is a powdered solid waste produced after coal combustion in power plants. Due to its special chemical properties, fly ash can be transformed from solid waste into high-value materials. For example, fly ash can be used as a building material, or it can be transformed into floating beads or trace compound fertilizers; in industry, various substances such as iron, carbon, copper, germanium and scandium can also be recovered from fly ash; in addition, some fly ash is also used to backfill working surfaces in coal mines and other mining areas to avoid mine earthquakes and landslides. Therefore, the demand for fly ash in various industries is increasing, and accordingly, the market demand for fly ash transportation is also increasing.

[0003] Since fly ash is a bulk cargo that is prone to dust and pollution, it is usually loaded on semi-trailers for road transportation, and "open top boxes", "U-shaped cement tankers", "tank containers" and other methods for railway transportation. The cost of road transportation is higher than that of railway transportation, and there is a lack of dedicated fly ash transport tankers for railway transportation. At present, 21t axle-load railway cement tankers are usually used to transport fly ash on railways, but their volume is only 54m 3 , the volume is small, resulting in a low carrying capacity each time. In addition, when the distance between the ground facilities and the railway line exceeds 160m, the horizontal transportation distance of the railway cement tanker cannot meet the requirements of long-distance unloading, resulting in a high residual volume after unloading and poor transportation economy. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems that the existing railway transport tank cars have small volume when transporting fly ash, resulting in low carrying capacity each time, and when the distance between the ground facilities and the railway line exceeds 160m, the horizontal transportation distance of the railway cement tank car cannot meet the long-distance unloading requirements, resulting in a high residual volume after unloading and poor transportation economy, and to provide a fluidized bed and a railway fly ash tank car based on the fluidized bed.

[0005] In order to achieve the above object, the technical solution provided by the present invention is as follows:

[0006] A fluidized bed, which is special in that it comprises a fluidized bed support and a slide;

[0007] The fluidized bed support comprises three support units, two partition plates and two head supports; the support unit comprises two longitudinal supports and N groups of annular supports, N ≥ 4 and is an even number;

[0008] The middle part of the upper end of the longitudinal support is a plane, and the slopes on both sides gradually increase; the two longitudinal support structures are identical and are relatively parallel.

[0009] Each group of annular supports includes a transverse middle support plate and two ring support plates; N transverse middle support plates are respectively connected transversely between the two longitudinal supports, and 2N ring support plates are symmetrically connected in pairs to the positions of the N transverse middle support plates on the outside of the two longitudinal supports; the upper end of the transverse middle support plate is a plane, and the ring support plate is an arched structure, and the plane where its straight line segment is located is tilted upward;

[0010] The three support units are arranged in sequence along the longitudinal direction, and two adjacent support units are separated and connected by corresponding partition plates; the partition plate is a special-shaped plate structure, the upper end corresponding to the position of the horizontal middle support plate is a plane, and the position corresponding to the ring support plates on both sides is an inclined plane with the same inclination angle as the ring support plates; the height of the plane position of the partition plate is higher than the height of the longitudinal support end;

[0011] The two end supports are respectively arranged at the outer ends of the first and last support units;

[0012] The lower ends of the longitudinal support, transverse middle support plate, ring support plate, partition plate and head support are respectively shaped according to the corresponding positions of the tank to be installed; the longitudinal support, transverse middle support plate, ring support plate and head support are respectively provided with a plurality of through holes;

[0013] The slide is arranged on the fluidized bed support, and the slide passes through the upper surface of the frame formed by the partition plate and the longitudinal support, the transverse middle support plate, the ring support plate and the head support; a plurality of ventilation holes are axially opened at the positions of the slide corresponding to each transverse middle support plate, and a fluidizing cloth is laid at the positions of the ventilation holes on its upper surface.

[0014] Furthermore, each longitudinal support comprises a longitudinal middle support plate and two longitudinal side support plates connected at both ends of the longitudinal middle support plate; the upper end of the longitudinal middle support plate is a plane, and the upper end of the longitudinal side support plate is an inclined surface;

[0015] Two of the N transverse middle support plates are respectively arranged at the positions where the longitudinal side support plates on both sides are connected to the longitudinal middle support plates, and the remaining transverse middle support plates are divided into two groups and symmetrically distributed at the positions corresponding to the longitudinal side support plates on both sides; each transverse middle support plate is lower than the height of the corresponding position of the longitudinal side support plate;

[0016] The head support includes a middle head support plate and four arched head side support plates; the middle head support plate has the same structure as the transverse middle support plate, and is laterally connected between the outer ends of the two longitudinal side support plates at any outer end of the first and last support units, wherein the two side head support plates are laterally symmetrically connected to the outer sides of the two longitudinal side support plates corresponding to the positions of the middle head support plate, and the other two are longitudinally connected to the outer ends of the two longitudinal side support plates; the height of the middle head support plate is equal to the height of the highest position of the longitudinal side support plates.

[0017] Furthermore, the arch foot position on one side of the ring support plate and the arch foot position on one side of the head side support plate are respectively provided with a flat cut surface that is highly matched with the corresponding position of the longitudinal side support plate, which is used to respectively realize the connection between the ring support plate, the head side support plate and the corresponding position of the longitudinal side support plate;

[0018] The angle between the upper end of the horizontal middle support plate and the plane where the straight section of the ring support plate is located, the angle between the upper end of the middle support plate of the head and the plane where the straight section of the head side support plate is located, and the angle between the plane of the upper end of the partition plate and its inclined surface are all less than or equal to 41°.

[0019] Furthermore, the slide plate includes a porous fluidizing plate, two side slide plates arranged on both sides of the porous fluidizing plate, and two end slide plates arranged at both ends of the porous fluidizing plate;

[0020] The porous fluidizing plate is arranged on the upper surface of the frame formed by multiple horizontal middle support plates and the middle support plates of the heads on both sides; the two side slide plates are respectively arranged on the upper surface of the frame formed by the ring support plates on both sides, the longitudinal middle support plates, the longitudinal edge support plates and the corresponding side support plates of the heads; the two end slide plates are respectively arranged on the upper surface of the frame formed by the middle support plates of the heads at both ends and the side support plates of the heads.

[0021] Further, said N=4;

[0022] The arc section of the ring support plate is provided with bridge holes near both ends, and a cross section is provided between the two bridge holes.

[0023] Furthermore, a fluidizing cloth is laid on the porous fluidizing plate, and a first ventilation hole and a plurality of second ventilation holes are axially opened on the porous fluidizing plate; the aperture of the first ventilation hole is larger than the aperture of the second ventilation hole;

[0024] Both sides of the porous fluidizing plate are provided with upward folded edges; the folded edges have an angle of 41°, and a plurality of bolt fixing holes are axially opened on the folded edges for fixing the fluidizing cloth on the upper surface of the porous fluidizing plate.

[0025] Furthermore, the longitudinal middle support plate, longitudinal side support plate, transverse middle support plate, ring support plate, head middle support plate, head side support plate, porous fluidizing plate, side slide plate and end slide plate are all made of stainless steel.

[0026] In addition, the present invention also provides a railway fly ash tank car based on a fluidized bed, comprising a tank body, a traction pillow, two bogies, an air inlet and unloading pipeline, and a brake device. The tank body is arranged on the bogies at both ends through the traction pillow, a walkway is arranged on the top of the tank body, and a terminal ladder leading to the walkway is arranged on one side of the tank body; the special feature of the present invention is that it also includes the above-mentioned fluidized bed;

[0027] The tank body comprises a straight cylinder body, a conical cylinder body respectively connected and arranged at two ends of the straight cylinder body, and a sealing head respectively connected and arranged at the outer ends of the two conical cylinders;

[0028] The tops of the straight cylinder and the conical cylinder are respectively provided with manholes for feeding; at least one of the manholes is provided with an inner ladder for maintenance;

[0029] The fluidized bed is axially arranged at the bottom of the tank body, and the lower ends of the transverse middle support plate, the ring support plate, and the partition plate are welded to the inner side wall of the corresponding position of the straight cylinder body or the conical cylinder body, and the lower end of the head support is welded to the inner side wall of the head, so as to form an air cavity between the fluidized bed and the bottom of the tank body, form a material cavity above the fluidized bed, and divide the air cavity into three air chambers by two partition plates, and divide the material cavity into three material chambers;

[0030] The air inlet and unloading pipeline includes an air inlet pipeline, a unloading pipeline and an air venting pipeline; the air inlet pipeline and the unloading pipeline are both horizontally installed on the outside of the tank body near the bottom, and the air inlet pipeline is provided with three air inlet branches for supplying air to the three air chambers respectively to fluidize the powder on the fluidized bed; the unloading pipeline is provided with three unloading branches for respectively sucking the fluidized powder in the three material chambers; one end of the air venting pipeline is connected to the upper end of the tank body for releasing excess air in the tank body.

[0031] Furthermore, the straight cylinder body, the tapered cylinder body and the head are all made of high-strength weathering steel.

[0032] Further, two manholes are provided on the top of the straight cylinder body, and the inner ladder is located in one of the manholes;

[0033] The load-bearing capacity of the bogie is 27t; a coupler buffer device is provided at one end of the traction sleeper.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. A fluidized bed provided by the present invention is supported by three supporting units, two partition plates and two heads to form a fluidized bed structure with multiple gas bins and multiple material bins at a large inclination angle. The first through hole and the second through hole on the fluidized bed are supported by a fluidizing cloth and shaken to fully fluidize the remaining powder in the tank, thereby effectively solving the problem of excessive remaining powder in the tank during unloading and greatly improving the vehicle unloading rate.

[0036] 2. The railway fly ash tank car provided by the present invention has a multi-gas bin and multi-material bin structure formed by a fluidized bed, which maximizes the volume of the material bin in the tank body and enables the tank car volume to reach 80m 3 , with a maximum load of 83t, which effectively improves the tank truck's loading volume and load capacity. At the same time, it adopts a large-angle fluidized bed structure with multiple gas bins and multiple material bins, so that the unloading residual rate is less than 0.25%. It is the powder cargo railway transport tank truck with the largest volume, load capacity and the lowest residual volume among the current domestic powder cargo tank trucks. At the same time, four manholes as loading ports ensure the vehicle's effective loading capacity, greatly improving the economy of railway transportation, and can be widely used in railway transportation of powder cargo.

[0037] 3. The railway fly ash tank car of the present invention adopts high-strength weathering steel tank body material, which ensures the pressure resistance of the tank body, thereby improving the unloading working pressure of the tank car and solving the problem of long unloading and transportation distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an embodiment of a railway fly ash tank car based on a fluidized bed according to the present invention;

[0039] Figure 2 It is a structural schematic diagram of a tank body in an embodiment of the present invention;

[0040] Figure 3 It is a schematic structural diagram of a fluidized bed support in an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of the structure of the ring support plate of the fluidized bed support in an embodiment of the present invention;

[0042] Figure 5 It is a structural schematic diagram of a slide in an embodiment of the present invention;

[0043] Figure 6 Schematic diagram of the structure of the porous fluidizing plate of the slide in the embodiment of the present invention;

[0044] Figure 7 It is a schematic diagram of the installation of the fluidized bed support and the slide in the embodiment of the invention.

[0045] The specific reference numerals are as follows:

[0046] 0- fluidized bed; 1- fluidized bed support, 11- longitudinal middle support plate, 12- longitudinal side support plate, 13- transverse middle support plate, 14- ring support plate, 141- bridge hole, 142- Xuan cut, 15- partition plate, 151- fixing plate, 16- middle support plate of head, 17- side support plate of head;

[0047] 2- slide plate, 21- porous fluidizing plate, 211- first vent hole, 212- second vent hole, 213- bolt fixing hole, 22- side slide plate, 23- end slide plate;

[0048] 3-fluidizing cloth; 4-tank body, 41-straight cylinder body, 42-conical cylinder body, 43-head, 44-manhole, 45-inner ladder; 5-traction pillow; 6-bogie; 7-air inlet and unloading pipeline; 8-brake device; 9-walkway; 10-coupler buffer device. DETAILED DESCRIPTION

[0049] In order to make the advantages and features of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] A railway fly ash tank car based on a fluidized bed is used for transporting fly ash and similar powder media and transporting them on China's standard gauge railways. The loading and unloading method is top loading and bottom unloading.

[0051] like Figure 1 As shown, the railway fly ash tank car of the present invention has no center beam structure, specifically including a tank body 4, a traction pillow 5, two bogies 6, an air inlet and unloading pipeline 7, a braking device 8 and a fluidized bed 0, wherein the traction pillow 5 is axially welded to the bottom of the tank body 4, and the traction pillow 5 is arranged on the corresponding bogie 6 near both ends, that is, the tank body 4 is installed on the bogie 6 through the traction pillow 5; the bearing capacity of the bogie 6 in this embodiment is 27t. A coupler buffer device 10 is arranged at one end of the traction pillow 5; the braking device 8 is arranged at the bottom of the tank body 4, and is used to apply braking force to the tank car. A walkway 9 is arranged on the top of the tank body 4, and railings are arranged on both sides of the walkway. An end ladder leading to the walkway 9 is arranged on one side of the tank body 4.

[0052] like Figure 2As shown, the tank body 4 is a fish-belly high-strength weathering steel tank structure, which can effectively ensure the pressure resistance of the tank body 4, so that the unloading pressure can reach 0.4MPa, and the horizontal unloading distance of the vehicle can reach 160m, meeting the requirements of long-distance unloading and transportation. Specifically, the tank body 4 includes a straight cylinder 41, a conical cylinder 42 respectively welded at both ends of the straight cylinder 41 and connected, and a head 43 respectively welded at the outer ends of the two conical cylinders 42 and connected. Preferably, the straight cylinder 41, the conical cylinder 42 and the head 43 are all made of high-strength weathering steel. In this embodiment, two manholes 44 are provided on the top of the straight cylinder 41, and one manhole 44 is respectively provided on the top of the two conical cylinders 42, both of which are used for feeding; an inner ladder 45 is installed in a manhole 44 on the straight cylinder 41 for simultaneous maintenance.

[0053] like Figure 3 As shown, the fluidized bed 0 comprises a fluidized bed support 1, a slide 2 and a fluidizing cloth 3, wherein the fluidized bed support 1 comprises three support units, two partition plates 15 and two head supports.

[0054] Each support unit includes two longitudinal supports and four groups of annular supports. The two longitudinal supports have the same structure and are arranged relatively parallel; each longitudinal support includes a longitudinal middle support plate 11 and two longitudinal side support plates 12 connected to the two ends of the longitudinal middle support plate 11; the upper end of the longitudinal middle support plate 11 is a plane, and the upper end of the longitudinal side support plate 12 is an inclined surface, and one end of the longitudinal side support plate 12 connected to the longitudinal middle support plate 11 is the same height as the longitudinal middle support plate 11, and the other end is higher than the height of the longitudinal middle support plate 11, that is, the middle part of the upper end of the longitudinal support is a plane, and the two sides are arranged gradually higher along the slope.

[0055] Each group of annular supports includes a transverse middle support plate 13 and two ring support plates 14; the upper end of the transverse middle support plate 13 is a plane, and the four transverse middle support plates 13 are respectively connected transversely between the two longitudinal supports, wherein two transverse middle support plates 13 are respectively arranged at the positions where the two longitudinal side support plates 12 connect to the longitudinal middle support plate 11, and the remaining two transverse middle support plates 13 are symmetrically distributed at the positions corresponding to the longitudinal side support plates 12 on both sides; eight ring support plates 14 are symmetrically connected in groups of two to the positions corresponding to the four transverse middle support plates 13 on the outer sides of the two longitudinal side support plates 12. The ring support plate 14 is an arched structure, and the plane where its straight section is located is tilted upward, and the lower end is an arc section. Preferably, as Figure 4 As shown, the ring support plate 14 is made of a whole piece of steel plate, and its arc section is provided with bridge holes 141 near both ends, and a cutout 142 is provided between the two bridge holes 141. After simulation analysis and verification, the design of the ring support plate 14 improves the process performance of the fluidized bed support and the tank body while meeting the support requirements, and effectively reduces the dead weight.

[0056] The three support units are arranged in sequence along the longitudinal direction, and two adjacent support units are separated and connected by corresponding partition plates 15; the partition plate 15 is a special-shaped plate structure, and the upper end corresponding to the position of the horizontal middle support plate 13 is a plane, and the positions corresponding to the ring support plates 14 on both sides are inclined surfaces with the same inclination angle as the ring support plates 14.

[0057] The two end supports are respectively arranged at the outer ends of the first and last support units. Specifically, the end support includes a middle end support plate 16 and four side end support plates 17 of an arched structure; the middle end support plate 16 has the same structure as the transverse middle support plate 13, and is transversely connected between the outer ends of the two longitudinal side support plates 12 at the outer ends of any one of the first and last support units, wherein the two side end support plates 17 are transversely symmetrically connected to the outer sides of the two longitudinal side support plates 12 corresponding to the positions of the middle end support plate 16, and the other two side end support plates 17 are longitudinally connected to the outer ends of the two longitudinal side support plates 12.

[0058] Preferably, the arch foot position on one side of the ring support plate 12 and the arch foot position on one side of the head side support plate 17 are respectively provided with a plane cut surface with a height matching the corresponding position of the longitudinal side support plate 12, so as to respectively realize the connection between the ring support plate 12, the head side support plate 17 and the corresponding position of the longitudinal side support plate 12. The angle between the upper end of the horizontal middle support plate 13 and the plane where the straight section of the ring support plate 14 is located, the angle between the upper end of the head middle support plate 16 and the plane where the straight section of the head side support plate 17 is located, and the angle between the plane at the upper end of the partition plate 15 and its inclined surface are all less than or equal to 41°.

[0059] The lower ends of the longitudinal middle support plate 11, the longitudinal side support plate 12, the transverse middle support plate 13, the ring support plate 14, the partition plate 15, the middle support plate 16 of the head and the side support plate 17 of the head are respectively conformed to the corresponding positions in the tank body 4, that is, the curvature is adapted, and are used to weld the lower ends of the longitudinal middle support plate 11, the longitudinal side support plate 12, the transverse middle support plate 13, the ring support plate 14, the partition plate 15, the middle support plate 16 of the head and the side support plate 17 to the inner wall of the corresponding position of the tank body 4.

[0060] Each horizontal middle support plate 13 is lower than the height of the corresponding position of the longitudinal side support plate 12, and the height difference is used to place the fluidizing plate. The height of the flat plate position of the partition plate 15 is higher than the height of the highest position of the longitudinal side support plate 12; the height of the middle support plate 16 of the head is equal to the height of the highest position of the longitudinal side support plate 12; the longitudinal middle support plate 11, the longitudinal side support plate 12, the horizontal middle support plate 13, the ring support plate 14, the middle support plate 16 of the head and the side support plate 17 of the head are respectively provided with a plurality of through holes for gas circulation.

[0061] like Figure 5As shown, the slide plate 2 includes a porous fluidizing plate 21, two side slide plates 22 arranged on both sides of the porous fluidizing plate 21, and two end slide plates 23 arranged at both ends of the porous fluidizing plate 21. The upper end of the partition plate 15 passes through the porous fluidizing plate 21 and the side slide plates 22 at the corresponding positions. The porous fluidizing plate 21 is welded to the upper surface of the frame formed by multiple horizontal middle support plates 13 and the middle support plates 16 of the two side heads, and is flush with the upper end of the longitudinal side support plate 12 at the corresponding position. The two side slide plates 22 are respectively arranged on the upper surface of the frame formed by the ring support plates 14 on both sides, the longitudinal middle support plate 11, the longitudinal side support plate 12 and the corresponding side support plates 17 of the head. The two end slide plates 23 are respectively arranged on the upper surface of the frame formed by the middle support plates 16 and the side support plates 17 of the head at both ends. At the same time, the two ends of the partition plate 15 are respectively provided with fixing plates 151, which are used to fix the periphery of the slide plate 2 by welding the fixing plates 151 to the corresponding parts of the tank body 4.

[0062] like Figure 6 As shown, the porous fluidizing plate 21 is made of a whole piece of steel plate by pressing, and a first vent hole 211 and a plurality of second vent holes 212 are axially opened on it, and the aperture of the first vent hole 211 is larger than the aperture of the second vent hole 212, which is used to achieve better inlet gasification and effectively improve the unloading rate. Both sides of the porous fluidizing plate 21 are provided with upward folding edges, and the angle of the folding edge is equal to 41°; at the same time, a plurality of bolt fixing holes 213 are axially opened on the folding edge, which are used to lay the fluidizing cloth 3 on the upper surface of the porous fluidizing plate 21 and fix it through the bolt fixing holes 213.

[0063] like Figure 7 As shown, the fluidized bed support 1 of the fluidized bed 0 is welded to the bottom of the tank body 4, and the slide plate 2 is arranged on the upper surface of the fluidized bed support 1 to form an air cavity between the fluidized bed 0 and the bottom of the tank body 4, so that a material cavity is formed above the fluidized bed 0; at the same time, the air cavity is divided into three air chambers A1, A2, and A3 by two partition plates 15, and the material cavity is semi-divided into three material chambers B1, B2, and B3, which is convenient for the bin sweeping operation during unloading and improves the vehicle unloading rate. Among them, the air chamber A1 is located below the material chamber B1, the air chamber A2 is located below the material chamber B2, and the air chamber A3 is located below the material chamber B3.

[0064] In the present invention, the longitudinal middle support plate 11, the longitudinal side support plate 12, the transverse middle support plate 13, the ring support plate 14, the head middle support plate 16, the head side support plate 17, the porous fluidizing plate 21, the side slide plate 22 and the end slide plate 23 are preferably made of stainless steel. In this embodiment, stainless steel of model Q450NQR1 is used.

[0065] The air inlet and discharge pipeline 7 includes an air inlet pipeline, a discharge pipeline and an air release pipeline; the air inlet pipeline and the discharge pipeline are both horizontally installed on the outside of the tank body 4 near the bottom, and three air inlet branches are arranged on the air inlet pipeline for supplying air to the three air chambers respectively to fluidize the powder on the fluidized bed 0; three discharge branches are arranged on the discharge pipeline for respectively absorbing the fluidized powder in the three material chambers; one end of the air release pipeline is connected to the upper end of the tank body 4 for releasing the excess air in the tank body 4.

[0066] The technical parameters of the railway fly ash tank car based on the fluidized bed in this embodiment are:

[0067]

[0068] It can be seen that the railway fly ash tank car of the present invention has the characteristics of large volume, high load capacity, long unloading and transportation distance and small unloading residue, and is the largest volume railway transport tank car for powdered cargo.

[0069] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. For ordinary professional and technical personnel in the field, the specific technical solution recorded in the above embodiment can be modified, or some of the technical features therein can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution protected by the present invention.

Claims

1. A fluidized bed, characterized in that: It comprises a fluidized bed support (1) and a slide plate (2); The fluidized bed support (1) comprises three support units, two partition plates (15) and two end supports; the support unit comprises two longitudinal supports and N groups of annular supports, where N is ≥ 4 and is an even number; The middle part of the upper end of the longitudinal support is a plane, and the slopes on both sides gradually increase; the two longitudinal support structures are identical and are relatively parallel. Each group of annular supports comprises a transverse middle support plate (13) and two ring support plates (14); N transverse middle support plates (13) are respectively connected transversely between the two longitudinal supports, and 2N ring support plates (14) are symmetrically connected transversely to the positions of the N transverse middle support plates (13) on the outside of the two longitudinal supports in groups of two; the upper end of the transverse middle support plate (13) is a plane, and the ring support plate (14) is an arched structure, and the plane where the straight line segment is located is inclined upward; The three support units are arranged in sequence along the longitudinal direction, and two adjacent support units are separated and connected by corresponding partition plates (15); the partition plates (15) are special-shaped plate structures, the upper end of which is a plane corresponding to the position of the horizontal middle support plate (13), and the positions of the ring support plates (14) on both sides are inclined planes with the same inclination angle as the ring support plates (14); the height of the plane position of the partition plate (15) is higher than the height of the longitudinal support end; The two end supports are respectively arranged at the outer ends of the first and last support units; The longitudinal support, the transverse middle support plate (13), the ring support plate (14), the partition plate (15) and the lower end of the head support are respectively shaped according to the corresponding positions of the tank body to be installed; the longitudinal support, the transverse middle support plate (13), the ring support plate (14) and the head support are respectively provided with a plurality of through holes; The slide plate (2) is arranged on the fluidized bed support (1), and the slide plate (2) passes through the partition plate (15) and the upper surface of the frame formed by the longitudinal support, the transverse middle support plate (13), the ring support plate (14) and the head support; the slide plate (2) is axially provided with a plurality of ventilation holes corresponding to the positions of each transverse middle support plate (13), and the fluidizing cloth (3) is laid on the upper surface of the slide plate at the positions corresponding to the ventilation holes.

2. A fluidized bed according to claim 1, characterized in that: Each longitudinal support comprises a longitudinal middle support plate (11) and two longitudinal side support plates (12) connected to both ends of the longitudinal middle support plate (11); the upper end of the longitudinal middle support plate (11) is a plane, and the upper end of the longitudinal side support plate (12) is an inclined surface; Two of the N transverse middle support plates (13) are respectively arranged at positions where two longitudinal side support plates (12) are connected to the longitudinal middle support plate (11), and the remaining transverse middle support plates (13) are divided into two groups and symmetrically distributed at positions corresponding to the longitudinal side support plates (12) on both sides; each transverse middle support plate (13) is lower than the height of the corresponding position of the longitudinal side support plate (12); The head support comprises a head middle support plate (16) and four head side support plates (17) with an arched structure; the head middle support plate (16) has the same structure as the transverse middle support plate (13), and is transversely connected between the outer ends of two longitudinal side support plates (12) at the outer ends of any one of the first and last support units, wherein two head side support plates (17) are transversely symmetrically connected to the outer sides of the two longitudinal side support plates (12) at positions corresponding to the head middle support plate (16), and the other two are longitudinally connected to the outer ends of the two longitudinal side support plates (12); the height of the head middle support plate (16) is equal to the height of the highest position of the longitudinal side support plates (12).

3. A fluidized bed according to claim 2, characterized in that: The arch foot position on one side of the ring support plate (12) and the arch foot position on one side of the head side support plate (17) are respectively provided with a plane cut surface with a height matching the corresponding position of the longitudinal side support plate (12), so as to respectively realize the connection between the ring support plate (12), the head side support plate (17) and the corresponding position of the longitudinal side support plate (12); The angle between the upper end of the transverse middle support plate (13) and the plane where the straight section of the annular support plate (14) is located, the angle between the upper end of the middle support plate (16) of the head and the plane where the straight section of the side support plate (17) of the head is located, and the angle between the plane of the upper end of the partition plate (15) and its inclined surface are all less than or equal to 41°.

4. A fluidized bed according to claim 3, characterized in that: The slide plate (2) comprises a porous fluidizing plate (21), two side slide plates (22) arranged on both sides of the porous fluidizing plate (21), and two end slide plates (23) arranged at both ends of the porous fluidizing plate (21); The porous fluidizing plate (21) is arranged on the upper surface of a frame formed by a plurality of transverse middle support plates (13) and the middle support plates (16) on both sides of the head; the two side slide plates (22) are respectively arranged on the upper surface of a frame formed by the ring support plates (14) on both sides, the longitudinal middle support plates (11), the longitudinal edge support plates (12) and the corresponding side support plates (17) on the head; and the two end slide plates (23) are respectively arranged on the upper surface of a frame formed by the middle support plates (16) and the side support plates (17) on both ends of the head.

5. The fluidized bed according to claim 1, characterized in that: Said N=4; The arc section of the ring support plate (14) is provided with bridge holes (141) at positions close to both ends, and a recess (142) is provided between the two bridge holes (141).

6. The fluidized bed according to claim 1, characterized in that: A first ventilation hole (211) and a plurality of second ventilation holes (212) are axially opened on the porous fluidizing plate (21); the aperture of the first ventilation hole (211) is larger than the aperture of the second ventilation hole (212); Both sides of the porous fluidizing plate (21) are provided with upward folded edges; the folded edges have an angle of 41°, and a plurality of bolt fixing holes (213) are axially opened on the folded edges for fixing the fluidizing cloth (3) on the upper surface of the porous fluidizing plate (21).

7. The fluidized bed according to claim 1, characterized in that: The longitudinal middle support plate (11), the longitudinal side support plate (12), the transverse middle support plate (13), the ring support plate (14), the head middle support plate (16), the head side support plate (17), the porous fluidizing plate (21), the side slide plate (22) and the end slide plate (23) are all made of stainless steel.

8. A railway fly ash tank car based on a fluidized bed, comprising a tank body (4), a traction pillow (5), two bogies (6), an air inlet and unloading pipeline (7) and a brake device (8), wherein the tank body (4) is arranged on the bogies (6) at both ends through the traction pillow (5), a walkway (9) is arranged on the top of the tank body (4), and an end ladder leading to the walkway is arranged on one side of the tank body (4); the characteristics are: Also comprises the fluidized bed (0) according to any one of claims 1 to 7; The tank body (4) comprises a straight cylindrical body (41), a conical cylindrical body (42) respectively connected to the two ends of the straight cylindrical body (41), and a sealing head (43) respectively connected to the outer ends of the two conical cylindrical bodies (42); The tops of the straight cylinder (41) and the conical cylinder (42) are respectively provided with manholes (44) for feeding; at least one of the manholes (44) is provided with an inner ladder (45) for maintenance; The fluidized bed (0) is axially arranged at the bottom of the tank body (4), and the lower ends of the transverse middle support plate (13), the ring support plate (14), and the partition plate (15) are welded to the inner side wall of the corresponding position of the straight cylinder body (41) or the conical cylinder body (42), and the lower end of the head support is welded to the inner side wall of the head (43), so as to form an air cavity between the fluidized bed (0) and the bottom of the tank body (4), to form a material cavity above the fluidized bed (0), and to divide the air cavity into three air chambers and to divide the material cavity into three material chambers by two partition plates (15); The air inlet and discharge pipeline (7) comprises an air inlet pipeline, a discharge pipeline and an air release pipeline; the air inlet pipeline and the discharge pipeline are both horizontally installed on the outside of the tank body (4) near the bottom; the air inlet pipeline is provided with three air inlet branches for supplying air to the three air chambers respectively so as to fluidize the powder on the fluidized bed (0); the discharge pipeline is provided with three discharge branches for respectively sucking the fluidized powder in the three material chambers; one end of the air release pipeline is connected to the upper end of the tank body (4) for releasing excess air in the tank body (4).

9. A railway fly ash tank car according to claim 8, characterized in that: The straight cylinder body (41), the conical cylinder body (42) and the end cover (43) are all made of high-strength weathering steel.

10. The railway fly ash tank car according to claim 9, characterized in that: The top of the straight cylinder (41) is provided with two manholes, and the inner ladder is located in one of the manholes; The load-bearing capacity of the bogie (8) is 27 t; A coupler buffer device (10) is provided at one end of the traction pillow (5).

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