CN212504951U

CN212504951U - Tuyere small sleeve device for multi-medium composite blowing

Info

Publication number: CN212504951U
Application number: CN202021903765.3U
Authority: CN
Inventors: 金松; 肖国栋; 李涛
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-02-09
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a tuyere small sleeve device for multi-medium composite injection, which comprises a tuyere small sleeve body, wherein a central air supply outlet is arranged in the tuyere small sleeve body, a cooling water inlet and outlet water cavity is arranged in the tuyere small sleeve body around the central air supply outlet, an L-shaped coal gas channel for injecting coal gas is arranged in the cooling water inlet and outlet water cavity, the length of the coal gas channel is 160mm, the diameter of the coal gas channel is 16mm, the inlet end of the coal gas channel is arranged on the end surface of the tuyere small sleeve body, and the outlet end of the coal gas channel is communicated with the central air supply outlet and is close to the outlet end of the small sleeve body; the end face of the small sleeve body is centrally and symmetrically provided with a first cooling water inlet and a first cooling water outlet, and the end face of the small sleeve body is vertically and horizontally and axially symmetrically provided with a second cooling water inlet and a second cooling water outlet. The utility model discloses can realize oxygen, nitrogen gas, coal dust and so on multimedium compound jetting operation, reduction in production cost.

Description

Tuyere small sleeve device for multi-medium composite blowing

Technical Field

The utility model relates to a tuyere small sleeve device for multi-medium composite injection.

Background

A tuyere small sleeve device is designed on a furnace body of an industrial furnace such as a metallurgical industrial furnace or a smelting reduction iron-making furnace (an Ou smelting furnace). The device is mainly used for blowing substances such as gas or dust into the furnace through the tuyere small sleeve, so that the medium has the functions of supporting combustion or saving fuel consumption. Because the position and the quantity of the inner pore channels of the tuyere are reasonable or not, the service life and the production safety of the tuyere small sleeve are directly influenced. Therefore, two groups of open pores (2-4 pore channels) are generally arranged on the end surface of the tuyere small sleeve, and one group of open pores is the open pores (2-4 pore channels) of the water inlet and the water outlet of the cooling water; the other group is a small sleeve with a central air supply outlet opening (1 pore channel for conveying mixed gas of oxygen and nitrogen). However, if a user wants to blow more media, the user is limited by the safety of the structural design, and the technical difficulty is great. At present, similar documents and reports of multi-medium blowing are not found through consulting relevant literature data and practical investigation. For example, from the patent retrieval keyword 'tuyere coal injection', a 'blast furnace coal injection system distributor coal injection branch pipe anti-blocking control system CN 201110191075.9' can be retrieved, and 'a double-gun coal injection device CN 200820214896.3' are all used by single media in blast furnace production, and the requirements of site working conditions and the like have great differences, and the innovation point is completely different from the invention.

Disclosure of Invention

An object of the utility model is to provide a tuyere small sleeve device of compound jetting of many mediums can realize the compound jetting operation of many mediums such as oxygen, nitrogen gas, coal gas, buggy, reduction in production cost.

The utility model discloses a tuyere small sleeve device for multi-medium composite injection, which comprises a tuyere small sleeve body, wherein a central air supply outlet is arranged in the tuyere small sleeve body, a cooling water inlet and outlet water cavity is arranged in the tuyere small sleeve body around the central air supply outlet, an L-shaped coal gas channel for injecting coal gas is arranged in the cooling water inlet and outlet water cavity, the length of the coal gas channel is 160mm, the diameter of the coal gas channel is 16mm, the inlet end of the coal gas channel is arranged on the end surface of the tuyere small sleeve body, and the outlet end of the coal gas channel is communicated with the central air supply outlet and is close to the outlet end of the small sleeve body; be central symmetry on the terminal surface of little cover body and being set up first cooling water inlet and first cooling water outlet, be horizontal axial symmetry about the top and bottom on the terminal surface of little cover body and setting up second cooling water inlet and second cooling water outlet, wherein constitute 40 contained angles between second cooling water inlet and the second cooling water outlet, constitute 36 contained angles between first cooling water inlet and the second cooling water inlet, the second cooling water outlet with coal gas passageway entrance point between constitute 36 contained angles.

Because the structural design in the composite injection tuyere small sleeve is greatly optimized, the injection function of the tuyere small sleeve is highly integrated, the mutual influence of external multi-pipeline devices is reduced, the composite injection of multiple media is realized, the composite injection of multiple media such as oxygen, nitrogen, coal gas, coal powder and the like can be realized, and the service life is more than 3 months.

Compared with various problems of complicated erection of various medium pipelines, large construction and installation workload and mutual interference among the pipelines caused by the traditional multi-medium injection, the multi-medium composite injection tuyere small sleeve can reduce the engineering installation cost and the labor intensity and the production cost. More importantly, the recycling of the self-produced gas is realized, the energy-saving and emission-reducing effects are obvious, and the method has wide popularization value.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic diagram of the AA cross-sectional structure shown in FIG. 1.

Detailed Description

A kind of little set of apparatuses of tuyere of the compound jetting of many mediums, as shown in figure 1, 2, including the body 6 of the small set of tuyere, the body 6 of the small set of tuyere is equipped with the central supply-air outlet 4, the body of the small set of tuyere around the central supply-air outlet 4 is equipped with the cooling water and entered and exited the water cavity, set up a coal gas channel 3 of coal gas of L-shaped jetting in said cooling water enters and exits the water cavity, the length of the channel 3 is 160mm, the diameter is 16mm, the entrance point of the coal gas channel 3 is set up on the terminal surface of the body 6 of the small set of tuyere, the exit end of the coal gas channel 3 is linked with said central supply-air outlet and close to the exit end; be central symmetry on the terminal surface of little cover body 6 and being set up first cooling water inlet 1 and first cooling water outlet 11, be horizontal axial symmetry about being last lower on the terminal surface of little cover body and setting up second cooling water inlet 2 and second cooling water outlet 22, wherein constitute 40 contained angles between second cooling water inlet 2 and the second cooling water outlet 22, constitute 36 contained angles between first cooling water inlet 1 and the second cooling water inlet 2, second cooling water outlet 22 with gas passageway 3 entrance point between constitute 36 contained angles.

Claims

1. The utility model provides a tuyere small sleeve device of compound jetting of multimedium, includes tuyere small sleeve body, and this internal central supply-air outlet that is setting up of tuyere small sleeve, this internal cooling water business turn over water chamber, characterized by of tuyere small sleeve around the central supply-air outlet are setting up: an L-shaped coal gas channel for injecting coal gas is arranged in the cooling water inlet and outlet cavity, the length of the coal gas channel is 160mm, the diameter of the coal gas channel is 16mm, the inlet end of the coal gas channel is arranged on the end surface of the tuyere small sleeve body, and the outlet end of the coal gas channel is communicated with the central air supply outlet and is close to the outlet end of the small sleeve body; be central symmetry on the terminal surface of little cover body and being set up first cooling water inlet and first cooling water outlet, be horizontal axial symmetry about the top and bottom on the terminal surface of little cover body and setting up second cooling water inlet and second cooling water outlet, wherein constitute 40 contained angles between second cooling water inlet and the second cooling water outlet, constitute 36 contained angles between first cooling water inlet and the second cooling water inlet, the second cooling water outlet with coal gas passageway entrance point between constitute 36 contained angles.