CN-224231217-U - Blast furnace belly pipe gas tightness detects instrument

Abstract

The utility model belongs to the technical field of blast furnace air supply systems, and relates to a tool for detecting the air tightness of a blast furnace belly pipe, which comprises a belly pipe assembly, wherein the front end of the belly pipe assembly is connected with an air-tight end cover, the front section of the air-tight end cover is provided with a small cover plugboard, the small cover plugboard is provided with a wire head, the wire head is connected with an air inlet pipe, the air inlet pipe is provided with an air inlet valve, the air inlet pipe is connected with a metal hose through a quick connector, the other end of the metal hose is connected with a compressed air pipe network, and a ball valve is arranged at the joint of the metal hose and the compressed air pipe network. The utility model effectively detects whether the tuyere equipment is installed in place, avoids repeated damping down of the blast furnace and ensures normal production of the blast furnace.

Inventors

• Fu Lefang
• Cheng Mufu

Assignees

• 山东钢铁集团永锋临港有限公司

Dates

Publication Date

20260512

Application Date

20250723

Claims (7)

1. 1. The utility model provides a blast furnace belly pipe gas tightness testing tool, includes the belly pipe assembly, and the belly pipe assembly front end is connected with airtight end cover, is provided with the little lid picture peg on the airtight end cover anterior segment, its characterized in that, the spinneret is installed to little lid picture peg, and the intake pipe is connected to the spinneret, is provided with the admission valve in the intake pipe, and the intake pipe passes through quick-operation joint and connects metal collapsible tube, and the metal collapsible tube other end is connected to the compressed air pipe network, and the ball valve is installed to metal collapsible tube and compressed air pipe network junction.
2. 2. The tool for detecting the air tightness of the blast furnace belly pipe according to claim 1, wherein the air inlet pipe is an air source hard pipe, and the air inlet pipe penetrates through the inner surface of the air-tight end cover and is communicated with the inside of the belly pipe assembly.
3. 3. The blast furnace belly pipe gas tightness detection tool according to claim 1, wherein the air inlet pipe tail end is provided with a quick connector female end, one end of the metal hose is provided with a quick connector male end, and the quick connector female end and the quick connector male end are connected in a matched mode.
4. 4. The blast furnace belly pipe gas tightness detection tool according to claim 1, wherein a sealing gasket is arranged on a contact surface of the gas tight end cover and the belly pipe assembly.
5. 5. The blast furnace belly pipe gas tightness detection tool according to claim 1, wherein a pressure gauge is arranged on the air inlet pipe, and the pressure gauge is positioned between the air inlet valve and the quick connector.
6. 6. The blast furnace belly pipe gas tightness detection tool according to claim 1, wherein the small cover plugboard is fastened and connected with the gas tight end cover through flange bolts.
7. 7. The blast furnace belly pipe gas tightness detection tool according to claim 1, wherein a safety relief valve is installed at a position, close to the ball valve, of the metal hose.

Description

Blast furnace belly pipe gas tightness detects instrument Technical Field The utility model belongs to the technical field of blast furnace air supply systems, and particularly relates to a tool for detecting air tightness of a blast furnace belly pipe. Background The blast furnace tuyere blows high-temperature hot air into the furnace in the iron-making process, and plays a vital role in the iron-making link. The tuyere belly pipe, the middle and small sleeves or the tuyere belly pipe are damaged or are forced to be replaced periodically after being used for a certain time, and the replacement is generally arranged for overhauling. The rear end of the small sleeve is sleeved on the front end of the belly pipe, the middle sleeve is sleeved outside the small sleeve, a clamping structure is arranged between the middle sleeve and the small sleeve, the small sleeve and the middle sleeve are copper, the thermal expansion is high, the small sleeve and the middle sleeve are generally free from leakage, and a gap between the belly pipe and the small sleeve is mainly inspected. During maintenance, the blast hole is plugged by stemming, then the tuyere equipment is replaced, after the tuyere equipment is replaced, the plugged stemming is poked out from the inner hole of the belly pipe, then the blast is reblowed, and after the blast is reblowed, if the belly pipe is small in contact with the air leakage surface, the blast is reblowed and the blast is reblowed, so that a large amount of equipment is started and stopped, the time and the labor are wasted, and considerable loss is caused. Therefore, a blast furnace belly pipe gas tightness detection tool is provided. Disclosure of utility model The utility model aims to provide a blast furnace belly pipe air tightness detection tool, which solves the problems in the background technology. In order to achieve the purpose, the technical scheme includes that the tool for detecting the air tightness of the blast furnace belly pipe comprises a belly pipe assembly, wherein the front end of the belly pipe assembly is connected with an air-tight end cover, a small cover inserting plate is arranged on the front section of the air-tight end cover, a wire head is arranged on the small cover inserting plate, the wire head is connected with an air inlet pipe, an air inlet valve is arranged on the air inlet pipe, the air inlet pipe is connected with a metal hose through a quick connector, the other end of the metal hose is connected to a compressed air pipe network, and a ball valve is arranged at the joint of the metal hose and the compressed air pipe network. Preferably, the air inlet pipe is an air source hard pipe, and the air inlet pipe penetrates through the inner surface of the airtight end cover and is communicated with the inside of the belly pipe assembly. Preferably, the tail end of the air inlet pipe is provided with a quick connector female end, one end of the metal hose is provided with a quick connector male end, and the quick connector female end and the quick connector male end are mutually matched and connected. Preferably, a sealing gasket is arranged on the contact surface of the airtight end cover and the belly pipe assembly. Preferably, a pressure gauge is arranged on the air inlet pipe, and the pressure gauge is positioned between the air inlet valve and the quick connector. Preferably, the small cover plugboard is fastened and connected with the airtight end cover by adopting flange bolts. Preferably, a safety relief valve is arranged at the position, close to the ball valve, of the metal hose. Compared with the prior art, the utility model has the advantages and positive effects that, The utility model effectively detects whether the tuyere equipment is installed in place, avoids repeated damping down of the blast furnace and ensures normal production of the blast furnace. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art. FIG. 1 is a schematic diagram of a blast furnace belly pipe gas tightness detection tool according to an embodiment; in the figure, 1, a belly pipe assembly, 2, an airtight end cover, 3, a small cover plugboard, 4, a wire head, 5, an air inlet pipe, 6, an air inlet valve, 7, a quick connector, 8, a metal hose, 9, a ball valve, 10, a pressure gauge, 11 and a safety relief valve. Detailed Description In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, wit