阅读说明：本技术 滚筒冷渣机滚筒 (Roller of roller slag cooler ) 是由 李建锋 于 2018-06-01 设计创作，主要内容包括：本发明公开了一种滚筒冷渣机滚筒,包括保温层、壳体、换热管、肋片、螺旋推进板、扬渣板、膜式换热管屏、弯曲形翅片以及中心管等。滚筒冷渣机滚筒外层换热管的肋片安装方向为径向,同时在现有外层换热管外面增加一层壳体,壳体外面覆盖保温层；在冷渣机滚筒内部安装由换热管和肋片构成的膜式换热管屏,换热管屏上安装弯曲形翅片,以提高有效换热面积。(The invention discloses a roller of a roller slag cooler, which comprises a heat-insulating layer, a shell, a heat exchange tube, fins, a spiral pushing plate, a slag raising plate, a membrane type heat exchange tube panel, bent fins, a central tube and the like. The fin installation direction of the roller outer layer heat exchange tube of the roller slag cooler is radial, and meanwhile, a shell is added outside the existing outer layer heat exchange tube, and a heat insulation layer covers the shell; a film type heat exchange tube panel consisting of heat exchange tubes and fins is arranged inside a roller of the slag cooler, and the heat exchange tube panel is provided with bent fins so as to improve the effective heat exchange area.)

1. The utility model provides a cylinder cold sediment machine cylinder, includes heat preservation, casing, heat exchange tube, fin, screw propulsion board, raises the cinder plate, diaphragm type heat exchange tube panel, crooked shape fin and center tube, cylinder cold sediment machine cylinder shell surface covers the heat preservation, at casing internal surface installation screw propulsion board, outer heat exchange tube passes screw propulsion board and is connected with the casing through the fin, raise the cinder plate welding and be in between the screw propulsion board on outer heat exchange tube, at the diaphragm type heat exchange tube panel that cylinder internally mounted comprises inside heat exchange tube and fin, weld crooked shape fin on the fin anteroposterior of heat exchange tube panel, the fin constitutes semi-enclosed cavity with inside heat exchange tube and fin, use the direction of rotation as the benchmark, the cavity opening in tube panel the place ahead is towards centrifugal direction, the cavity opening in tube panel rear is towards centripetal direction, the center tube is installed on the drum axis.

2. The roller for a roller slag cooler according to claim 1, characterized in that the number of the film heat exchange tube panels inside the roller is even and the film heat exchange tube panels are mounted in an axisymmetric manner.

3. The roller for a roller slag cooler according to claim 1, wherein heat exchange fins are welded to the centripetal surface of the outer heat exchange tube.

Technical Field

The invention relates to a roller of a roller slag cooler.

Background

In the current industrial production process, industries such as electric power, cement and metallurgy generate a lot of high-temperature ash to be cooled. For example, circulating fluidized bed boiler units in the power industry generate a large amount of high-temperature ash, and if the ash cannot be effectively cooled, not only is the waste of heat energy great, but also great safety problems are brought to nearby people and equipment. Therefore, the physical heat of the ash needs to be recycled, so that the energy utilization rate is improved, and the civilized production is realized.

In order to recover the heat of ash, too many types of ash cooling devices are available once, and a large number of practices prove that the roller ash cooler has more advantages in reliability and energy efficiency indexes, so that most of the ash cooling devices of fluidized bed boilers in China are roller ash coolers at present.

With the progress of technology, the output of the roller slag cooler commonly used at present is larger and larger, but because the heat exchange characteristic between ash slag and cooling water is different from the heat exchange characteristic between fluids, the utilization efficiency of the heat exchange surface of the roller slag cooler commonly used at present is lower, and even the contact heat exchange area is less than 40% of the total heat exchange area. Therefore, on one hand, the slag cooler is large in size, and meanwhile, the water outlet temperature is not high.

Disclosure of Invention

Aiming at the existing problems, the invention aims to provide a roller of a roller slag cooler with a higher effective heat exchange area, thereby realizing high output and high outlet water temperature.

In order to achieve the purpose, the invention adopts the technical scheme that: the installation direction of fins on the roller membrane type wall of the existing roller slag cooler is changed from circumferential installation to radial installation, and meanwhile, a layer of shell is added outside the existing outer layer heat exchange tube, and a heat insulation layer covers the shell; a film type heat exchange tube panel consisting of internal heat exchange tubes and fins is arranged inside a roller of the slag cooler, and bent fins are arranged on the heat exchange tube panel to improve the effective heat exchange area.

The device has the characteristics of simple structure, high efficiency, low cost, convenient maintenance and low power consumption.

Drawings

FIG. 1 is a schematic cross-sectional view of a roller slag cooler.

Fig. 2 is a partially enlarged view of the drum.

Detailed Description

The present invention is described in further detail below with reference to the attached drawings.

1-heat preservation layer 2-outer layer heat exchange tube 3-fin 4-shell 5-spiral pushing plate 6-slag raising plate 7-internal heat exchange tube 8-fin 9-front curved fin 10-back curved fin 11-central tube

In the roller of the roller slag cooler shown in the attached figure 1, a heat-insulating layer 1 covers the outside of a shell 4 of the roller slag cooler, an outer-layer heat exchange tube 2 penetrates through a spiral pushing plate 5 and is connected with the shell 4 through fins 3, the spiral pushing plate 5 is installed on the inner surface of the shell 4, and a slag raising plate 6 is welded on the outer-layer heat exchange tube 2 and is positioned between the spiral pushing plates 5. The film type heat exchange tube panel is characterized in that a film type heat exchange tube panel composed of internal heat exchange tubes 7 and fins 8 is arranged inside a roller of the roller slag cooler, a front bent curved fin 9 and a rear bent curved fin 10 are arranged on the front surface and the rear surface of the heat exchange tube panel, the opening direction of a cavity formed by the front bent curved fin 9, the internal heat exchange tubes 7 and the fins 8 is the direction far away from the axis of the roller slag cooler, and the opening direction of the cavity formed by the rear bent fin 10, the internal heat exchange tubes 7 and the fins 8 is the direction towards the axis of the. The central tube 11 is mounted on the centerline of the drum.

When the roller of the roller slag cooler works, the rotating direction of the roller and the tube panel shown in the attached drawing 1 is anticlockwise, the slag raising plate 6 raises partial ash in the roller, and in the process that the slag raising plate 6 carries the ash to move upwards, partial heat of the ash is released to the outer heat exchange tube 2, and the heat is taken away by a heat exchange medium in the heat exchange tube 2. After ash reaches a certain height, the ash is thrown out of the ash lifting plate 6 and falls onto the membrane type heat exchange tube panel, one part of the ash enters a cavity formed by the front bent curved fins 9, the internal heat exchange tubes 7 and the fins 8, the other part of the ash slides onto the other membrane type heat exchange tube panel which is arranged in an axial symmetry mode and enters a cavity formed by the rear bent curved fins 10, the internal heat exchange tubes 7 and the fins 8, and the ash falling into the cavity transfers heat to a heat exchange medium in the membrane type heat exchange tube panel. Along with the continuous rotation of the roller and the tube panel, ash in the front cavity and the rear cavity of the tube panel are continuously filled and scattered, so that the heat of the ash is continuously transferred to a heat exchange medium in the internal heat exchange tube 7. The heat exchange media in the outer heat exchange tube 2 and the inner heat exchange tube 7 are collected by the central tube 11. The ash slag which is not lifted at the bottom of the roller is continuously mixed with the lifted ash slag and is continuously pushed by the spiral pushing plate 5, the temperature of the ash slag is gradually reduced from the roller inlet of the slag cooler to the outlet, and finally the ash slag is discharged.

Because the fins 3 between the outer layer heat exchange tube 2 in the roller of the roller slag cooler and the shell 4 are radially arranged, when the slag raising plate 6 carries ash and slag to rise, the whole outer layer heat exchange tube 2 is buried in the ash and slag, and thus, the effective heat exchange area is increased. The number of the heat exchange tube panels arranged in the attached figure 1 is mainly determined by whether the heat exchange tube panels are convenient for personnel to enter for maintenance.

In order to improve the heat utilization efficiency of ash slag, the heat-insulating layer 1 covers the outside of the roller to prevent a large amount of heat from dissipating and prevent scalding accidents.

The present invention is not limited to the above-described preferred embodiments, and various other forms of products can be obtained by anyone in light of the present invention. However, any changes in shape or structure, which are the same or similar to the technical solutions of the present invention, are within the protection scope.