CN219064177U

CN219064177U - Electric furnace waste heat boiler

Info

Publication number: CN219064177U
Application number: CN202223425682.XU
Authority: CN
Inventors: 孙健; 刘文金; 蒲云涛
Original assignee: Suzhou Hailu Heavy Industry Co Ltd
Current assignee: Suzhou Hailu Heavy Industry Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-23
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an electric furnace waste heat boiler, which comprises: the top has the furnace body that advances the tobacco bale and the bottom has the tobacco bale, and set up in the outside import collection case of furnace body and export collection case, a plurality of convection bank of tubes have been arranged side by side to the interval in proper order from front to back in the inside of furnace body, every row of convection bank of tubes is through hanging the subassembly activity in top ventilation beam, the one end intercommunication import collection case of every row of convection bank of tubes, the other end intercommunication export collection case, every row of convection bank of tubes fixedly connected with rapping rod, all rapping rods activity wear out the furnace body and connect simultaneously the rapping beam that sets up in the furnace body outside, the rapping beam can cooperate with rapping device in order to realize the mechanical rapping to each convection bank of tubes in the furnace body, the face that meets the smoke of a convection bank that is located the uppermost in every row is provided with the anti-wear cover that meets the smoke face. The utility model has the advantage of facilitating cleaning of dust adhering to the surfaces of the convection bank.

Description

Electric furnace waste heat boiler

Technical Field

The utility model relates to the technical field of boiler equipment, in particular to an electric furnace waste heat boiler.

Background

The steel industry is one of the countermeasures for environmental pollution, large energy consumption, flue gas dust removal and waste heat recovery and utilization in the steel industry for protecting the environment and saving energy. In recent years, with the development of the steel industry, the steel yield of electric furnace steelmaking is continuously increasing. The electric steel production was counted to be about 35% of the total production. The steel industry is a large household of energy consumption and pollution, so energy conservation and consumption reduction in the electric furnace steelmaking production process are always focused on. The electric furnace waste heat boiler has the characteristics of high temperature, large smoke quantity and large dust content; the high-temperature dust-containing flue gas has the temperature of up to 800 ℃, the flue gas production amount of 90000-150000 Nm < 3 >/h and the dust content of up to 10-30 g/m < 3 >, so that a large amount of dust is easily adhered to the surface of a convection tube bundle in the electric furnace waste heat boiler. Therefore, how to design an electric furnace waste heat boiler convenient for ash removal becomes a problem to be solved urgently.

Disclosure of Invention

The utility model aims to provide an electric furnace waste heat boiler convenient for ash removal.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric furnace waste heat boiler comprising: the top has the furnace body that advances the tobacco bale and the bottom has the tobacco bale, and set up in the outside import collection case of furnace body and export collection case, a plurality of convection bank of tubes have been arranged side by side to the interval in proper order from front to back in the inside of furnace body, every row of convection bank of tubes is through hanging the subassembly activity in top ventilation beam, the one end intercommunication import collection case of every row of convection bank of tubes, the other end intercommunication export collection case, every row of convection bank of tubes fixedly connected with rapping rod, all rapping rods activity wear out the furnace body and connect simultaneously the rapping beam that sets up in the furnace body outside, the rapping beam can cooperate with rapping device in order to realize the mechanical rapping to each convection bank of tubes in the furnace body, the face that meets the smoke of a convection bank that is located the uppermost in every row is provided with the anti-wear cover that meets the smoke face.

Further, the foregoing electric furnace exhaust-heat boiler, wherein: the convection banks are arranged in pairs, and each group of convection banks is fixedly connected with the same vibrating rod.

Further, the foregoing electric furnace exhaust-heat boiler, wherein: the structure of the suspension assembly includes: the pipe clamp for clamping and fixing the convection bank and the lifting lug plate fixed on the furnace top ventilation beam are hinged with the upper end of the lifting lug plate through an upper pin shaft, and the lower end of the lifting lug plate is hinged with the upper end of the pipe clamp through a lower pin shaft.

Further, the foregoing electric furnace exhaust-heat boiler, wherein: the specific connection structure of the convection bank and the rapping bar is as follows: a plurality of arc plates are fixed on the vibrating rod, each arc plate on the vibrating rod corresponds to one convection tube of the convection tube bundle respectively, and each arc plate is attached to and welded and fixed on the outer wall of the corresponding convection tube so that the convection tube bundle is fixed with the vibrating rod.

Through implementation of the technical scheme, the utility model has the beneficial effects that: simple structure, convenient operation can conveniently clear up the dust that adheres to convection bank surface, and the deashing is effectual.

Drawings

Fig. 1 is a schematic structural view of an electric furnace waste heat boiler according to the present utility model.

Fig. 2 is an enlarged schematic view of the a site shown in fig. 1.

Fig. 3 is a schematic view of the structure in the left view direction of fig. 1.

Fig. 4 is an enlarged schematic view of the B site shown in fig. 3.

Fig. 5 is a schematic diagram of the structure in the top view of fig. 1.

Fig. 6 is a schematic diagram of the connection of the rapping bar, the rapping beam, and the convective bank.

Fig. 7 is a schematic structural view of the C-C section shown in fig. 6.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the electric furnace waste heat boiler comprises: a furnace body 1 with a smoke inlet at the top and a smoke outlet at the bottom, and an inlet header 2 and an outlet header 3 arranged outside the furnace body 1, wherein in the embodiment, the inlet header 2 and the outlet header 3 are positioned on the left side of the outside 1 of the furnace, and the inlet header 2 is arranged below, and the outlet header 3 is arranged above; a plurality of convection bundles 4 are sequentially arranged in parallel at intervals from front to back in the furnace body 1, each row of convection bundles 4 is movably hung on a furnace top ventilation beam 6 through a hanging component 5, one end of each row of convection bundles 4 is communicated with an inlet header 2, the other end is communicated with an outlet header 3, each row of convection bundles 4 is fixedly connected with a vibrating rod 7, in the embodiment, the pairs of convection bundles 4 are arranged in a group, and each group of convection bundles 4 is fixedly connected with the same vibrating rod 7; all the vibrating rods 7 penetrate the furnace body 1 to the right and are simultaneously connected with vibrating beams 8 arranged outside the furnace body 1, the vibrating beams 8 can be matched with a vibrating device to realize mechanical vibrating of each convection bank 4 in the furnace body, and an anti-abrasion sleeve 10 covering the smoke facing surface is arranged on the smoke facing surface of one convection tube 9 positioned at the uppermost layer in each row of convection banks 4;

in the present embodiment, the structure of the suspension assembly 5 includes: the hanging assembly is simple in structure and convenient to install and maintain; in this embodiment, the specific connection structure between the convection bank 4 and the rapping bar 7 is: a plurality of arc plates 16 are fixed on the rapping rod 7, each arc plate 16 on the rapping rod 7 corresponds to one convection tube 9 of the convection tube bundle 4 respectively, each arc plate 16 is attached to and welded and fixed on the outer wall of the corresponding convection tube 9 so as to fix the convection tube bundle 4 and the rapping rod 7, and the connection structure is simple and convenient to install and maintain;

when the ash is removed, only the matched rapping device is used for knocking the rapping beam 8, and the rapping beam 8 can drive each convection bank 4 to mechanically vibrate through each rapping rod 7, so that dust attached to the pipe wall of the convection bank 4 is shaken off, and the ash removal effect is good.

The utility model has the advantages that: simple structure, convenient operation, during the deashing, only need use supporting rapping device to beat and shake the roof beam, shake the roof beam and just can drive each convection bank through each rapping rod and take place mechanical vibration to shake off the dust that will be attached to on the pipe wall of convection bank 4, the deashing is effectual, has guaranteed boiler heat transfer efficiency, and then has reduced boiler running cost.

The above description is only of the preferred embodiment of the present utility model, and is not intended to limit the present utility model in any other way, but any modifications or equivalent variations according to the technical spirit of the present utility model are still included in the scope of the present utility model.

Claims

1. An electric furnace waste heat boiler comprising: the top has the furnace body that advances the mouth and the bottom has the mouth of making a breath to and set up in the outside import collection case of furnace body and export collection case, its characterized in that: a plurality of convection banks are sequentially arranged in parallel at intervals from front to back in the furnace body, each row of convection banks is movably hung on a furnace top ventilation beam through a suspension assembly, one end of each row of convection banks is communicated with an inlet header, the other end of each row of convection banks is communicated with an outlet header, each row of convection banks is fixedly connected with a vibrating rod, all vibrating rods movably penetrate out of the furnace body and are simultaneously connected with vibrating beams arranged outside the furnace body, the vibrating beams can be matched with a vibrating device to realize mechanical vibration of each convection bank in the furnace body, and a smoke facing surface of one convection bank at the uppermost layer in each row of convection banks is provided with an anti-wear sleeve for covering the smoke facing surface.

2. An electric furnace waste heat boiler according to claim 1, wherein: the convection banks are arranged in pairs, and each group of convection banks is fixedly connected with the same vibrating rod.

3. An electric furnace waste heat boiler according to claim 1 or 2, characterized in that: the structure of the suspension assembly includes: the pipe clamp for clamping and fixing the convection bank and the lifting lug plate fixed on the furnace top ventilation beam are hinged with the upper end of the lifting lug plate through an upper pin shaft, and the lower end of the lifting lug plate is hinged with the upper end of the pipe clamp through a lower pin shaft.

4. An electric furnace waste heat boiler according to claim 1 or 2, characterized in that: the specific connection structure of the convection bank and the rapping bar is as follows: a plurality of arc plates are fixed on the vibrating rod, each arc plate on the vibrating rod corresponds to one convection tube of the convection tube bundle respectively, and each arc plate is attached to and welded and fixed on the outer wall of the corresponding convection tube so that the convection tube bundle is fixed with the vibrating rod.