A tool for measuring the deformation angle of a high furnace tuyere bushing

Abstract

A kind of tool for measuring deformation angle of blast furnace tuyere bush, including measuring rod, scale and flexible dog, wherein, the measuring rod is semi-closed hollow structure, for scale is shrunk to measuring rod, annular groove for fixing scale is arranged in the hollow structure, the tail end of scale is provided with flexible dog for fixing scale on annular groove, by fixing flexible dog on different annular groove, to extend or shorten the range of scale measurement.The utility model has the advantages of simple structure, easy operation, can accurately measure deformation angle of tuyere bush during normal production of blast furnace, and high safety.

Description

Technical Field

[0001] This utility model relates to the field of deformation measurement technology of blast furnace equipment, and in particular to a tool for measuring the deformation angle of the inner sleeve of the blast furnace tuyeres. Background Technology

[0002] During blast furnace operation, the tuyere sleeve is subjected to thermal expansion of the carbon bricks inside the blast furnace, or the expansion and compression caused by the intrusion of harmful elements, resulting in continuous upward deformation of the tuyere sleeve. This upward deformation widens the flange gap connecting the lower part of the tuyere sleeve to the main tuyere sleeve, causing gas leakage at the connection point. Simultaneously, the upward deformation of the tuyere sleeve causes the centerline of the small tuyere sleeve to shift, altering the initial airflow distribution in the tuyere zone and weakening the actual blast kinetic energy. This affects the development of the central airflow, leading to a deterioration of the hearth's operating condition and potential accidents such as furnace condition fluctuations. Regular shutdowns for maintenance are necessary during blast furnace production to replace severely deformed tuyere sleeves and ensure the initial airflow in the tuyere zone is distributed correctly according to the set direction. Therefore, it is essential to periodically measure the upward deformation of the tuyere sleeve to provide supporting data. Currently, each blast furnace judges the depth by observing the lower end of the tuyere sleeve sliding into the flange of the tuyere main sleeve after it tilts upwards. However, due to limited working space, operators must bend down and climb under the air supply pipe to visually measure the depth. This method is problematic because gas leakage is severe under the air supply pipe, posing a safety hazard. Furthermore, visual measurement lacks scientific rigor and cannot accurately reflect the angular deformation, making it unsuitable for actual production needs. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a tool for measuring the deformation angle of the tuyeres in a blast furnace, so as to solve the problems in the background art mentioned above.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: A tool for measuring the deformation angle of the tuyeres in a blast furnace includes a measuring rod, a scale, and flexible claws. The measuring rod is a semi-enclosed hollow structure used to retract the scale to the measuring rod. Annular grooves for fixing the scale are spaced apart within the hollow structure. Flexible claws are provided at the tail end of the scale to fix the scale onto the annular grooves. By fixing the flexible claws onto different annular grooves, the measurement range of the scale can be extended or shortened.

[0005] In this invention, a boss is provided on the annular groove, and a flexible claw is fixed on the boss.

[0006] In this invention, the flexible claw is composed of two flexible plates, which are symmetrically installed on the annular groove at intervals.

[0007] In this invention, the flexible claw is composed of three flexible plates, which are symmetrically and spaced apart on the annular groove.

[0008] In this invention, the measuring rod is provided with a hook for suspending the measuring rod in the air vent.

[0009] In this invention, the measuring rod is made of a rigid material.

[0010] Beneficial effects: This utility model has a simple structure and is easy to operate. It can accurately measure the deformation angle of the tuyeres during normal blast furnace production and has high safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the installation of the blast furnace tuyeres inner sleeve and the blast furnace tuyeres outer sleeve in a preferred embodiment of this utility model. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0014] See Figure 1 A tool for measuring the deformation angle of the tuyeres in a blast furnace includes a measuring rod 1, a scale 2, and flexible claws 3. The measuring rod 1 is a semi-enclosed hollow structure used to retract the scale 2 to the measuring rod 1. The hollow structure has annular grooves at intervals for fixing the scale 2. The tail end of the scale 2 is provided with flexible claws 3 for fixing the scale 2 to the annular grooves. By fixing the flexible claws 3 to different annular grooves, the measurement range of the scale 2 can be extended or shortened.

[0015] In this embodiment, a boss is provided on the annular groove, and the flexible claw 3 is fixed on the boss.

[0016] In this embodiment, the flexible claw 3 is composed of two flexible plates, which are symmetrically installed on the annular groove at intervals.

[0017] In this embodiment, the flexible claw 3 is composed of three flexible plates, which are symmetrically installed on the annular groove at intervals.

[0018] In this embodiment, the measuring rod 1 is provided with a hook for suspending the measuring rod 1 on the air vent sleeve 3.

[0019] In this embodiment, the measuring rod 1 is made of a rigid material.

[0020] In this embodiment, as Figure 2 As shown, during measurement, one end of the measuring rod 1 with the scale 2 fixed is inserted into the position of the connecting flange (lower part) 5 of the large sleeve and the middle sleeve below the tuyer 6, and the distance between the connecting flange 5 of the large sleeve and the middle sleeve and the flange of the large sleeve 4 of the tuyer is measured and recorded as A. The height of the centerline of the front end of the tuyer 6 is recorded as B. Then, the arctangent function θ=arcsinB / A is used to obtain the deformation angle θ of the blast furnace tuyer 6; 7 is the connecting flange (upper part) of the large sleeve and the middle sleeve, and 8 is the blower pipe.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tool for measuring the deformation angle of the tuyeres in a blast furnace, comprising a measuring rod, a scale, and flexible jaws, characterized in that, The measuring rod is a semi-enclosed hollow structure. The hollow structure is provided with annular grooves at intervals for fixing the scale to extend or shorten the measuring range of the scale. The tail end of the scale is provided with a flexible claw for fixing the scale on the annular groove.

2. The tool for measuring the deformation angle of the tuyeres in a blast furnace according to claim 1, characterized in that, A boss is provided on the annular groove, and the flexible claw is fixed on the boss.

3. The tool for measuring the deformation angle of the blast furnace tuyeres according to claim 1, characterized in that, The flexible claw consists of two flexible plates, which are symmetrically installed on the annular groove at intervals.

4. The tool for measuring the deformation angle of the tuyeres in a blast furnace according to claim 1, characterized in that, The flexible claw consists of three flexible plates, which are symmetrically installed on the annular groove at intervals.

5. The tool for measuring the deformation angle of the tuyeres in a blast furnace according to claim 1, characterized in that, The measuring rod is equipped with a hook.

6. The tool for measuring the deformation angle of the tuyeres in a blast furnace according to claim 1, characterized in that, The measuring rod is made of a rigid material.

Images