阅读说明：本技术 重型回转圆筒冷却机的安装方法 (Installation method of heavy-duty rotary cylinder cooler ) 是由 李俊峰 *** 魏渊博 吴彬 于 2019-10-26 设计创作，主要内容包括：本发明涉及冶金工程施工领域,具体是重型回转圆筒冷却机的安装方法；其特征是：包括步骤1、施工准备：步骤2、测量定位；步骤3、托轮安装：步骤4、挡轮安装：步骤5、筒体组装；步骤6、筒体就位；步骤7、传动装置安装。本方法通过合理拆分重型回转圆筒冷却机并将其划分为各段落,从而研发出一种工艺简单、合理的重型回转圆筒冷却机的安装方法,实现了圆筒冷却机的高效安装就位,且安装过程安全可靠,尤其适用于转底炉配套各类型圆筒冷却机的施工,实用性很强。(The invention relates to the field of metallurgical engineering construction, in particular to a method for installing a heavy rotary cylinder cooler; the method is characterized in that: the method comprises the following steps of 1, construction preparation: step 2, measuring and positioning; step 3, riding wheel installation: step 4, installing a catch wheel: step 5, assembling the cylinder body; step 6, positioning the cylinder; and 7, mounting a transmission device. The method reasonably splits the heavy rotary cylinder cooler and divides the heavy rotary cylinder cooler into sections, so that the method for installing the heavy rotary cylinder cooler with simple and reasonable process is developed, the cylinder cooler is efficiently installed in place, the installation process is safe and reliable, the method is particularly suitable for the construction of various types of cylinder coolers matched with a rotary hearth furnace, and the practicability is high.)

1. A method for installing a heavy-duty rotary cylinder cooler is characterized by comprising the following steps: comprises that

Step 1, construction preparation:

checking the parts of the equipment, preparing to install relevant machine tool materials, building an assembly platform of each section of the cylinder body, and retesting and handing over the equipment foundation;

step 2, measuring and positioning; drawing a central target plate and an elevation datum point arrangement diagram according to the construction drawing and the measurement control network, and determining a central line of the central target plate, a transverse center distance between foundations and an elevation datum line according to the arrangement diagram to be used as a datum for mounting the cylindrical cooling machine;

step 3, riding wheel installation:

sequentially assembling the supporting wheels and the top seats according to a drawing, controlling the deviation of the longitudinal center line, the deviation of the transverse center line and the play quantity of two sides of the supporting wheels, and the relative inclination and elevation deviation of the two groups of supporting wheels at the head part and the tail part in the process, grouting the foundation bolt holes to be about 200-250mm away from the top surface of the foundation after the supporting wheels are installed and adjusted, and screwing nuts for fixing after a health-preserving period is achieved;

step 4, installing a catch wheel:

the method comprises the following steps that (1) preliminary installation of a catch wheel is carried out before barrel hoisting, after barrel hoisting alignment is carried out, the offset of the axis of the catch wheel to the central line of a rolling ring is adjusted to be opposite to the rotation direction of the barrel, and the mounted catch wheel is in uniform contact with the rolling ring;

step 5, assembling the cylinder body;

on the assembly platform, all sections of the cylinder are assembled, 16 square iron plates with the length of 100-; after the central verticality and the joint misalignment of the sections of the cylinder are adjusted, the cylinder is welded; manually welding the inner part of the cylinder to seal the bottom, automatically welding and filling the outer part of the cylinder, and after the cylinder is welded, checking the distance between the width center of the belt and the width center of the riding wheel to meet the cold size on a drawing;

step 6, positioning the cylinder;

after the sections of the cylinder and the front and rear end wheel belts are assembled, welding a stop block, and hoisting the cylinder in place by using a large hoisting machine;

step 7, installing a transmission device;

before installation, the spring plate and the inner ring of the gear are cleaned, dry oil is smeared on the interface surface of the gear after cleaning, and after the cylinder is hoisted in place, a transmission device is immediately installed and temporarily fixed;

wherein the content of the first and second substances,

step 2, after the transverse spacing between the foundations is determined, pre-adding a certain thermal expansion amount according to the actual size between the two wheel belts, calculating the size of the oblique size and the size of the horizontal spacing of the two-gear supporting device, and correcting the size on the drawing;

in the step 3, when the riding wheel is installed, the inclination between the riding wheel and the transmission support base and the horizontal plane is controlled to be 1.5%;

step 5, measuring and aligning the time of the cylinder assembly before sunrise, and welding the cylinder before sunrise or after sunrise to prevent the cylinder from deforming due to heating and causing influence on the assembly pair and welding; when one surface of the cylinder body is inevitably subjected to heat radiation, asbestos plates are required to carry out heat insulation protection;

in the step 6 and the step 7, the barrel body and the large gear need to be coiled and rotated when being aligned, at the moment, a steel wire rope is wound on the barrel body, and then the barrel body is coiled and moved by a transmission device or a winch to be aligned and welded.

Technical Field

The invention relates to the field of metallurgical engineering construction, in particular to an installation method of a heavy rotary cylinder cooler.

Background

In the process of steel production, a large amount of metal dust containing iron, zinc and the like is generated, and the yield is about 10 percent of the steel yield. The yield of crude steel in the country in 2017 is 83173 ten thousand tons, and the dust and mud generated in 2017 is more than 8000 ten thousand tons. The storage of the sludge containing metal dust occupies a large area and can cause water and soil pollution, and the treatment of the sludge becomes an important environmental protection problem to be solved urgently in the metallurgical industry. At present, the most main disposal mode of the metal-containing sludge is ironmaking self-circulation, but zinc, alkali metal and the like in the sludge can cause damage of a blast furnace lining and accretion in the furnace, and the service life of the blast furnace and the quality of produced products are seriously influenced.

The rotary hearth furnace treatment technology is the most international and advanced treatment technology for metallurgical dust-containing sludge at present, and the metallurgical iron-containing sludge can be effectively recycled by preparing the dust-containing sludge into pellets, drying the pellets, then sending the pellets into the rotary hearth furnace, and reducing the pellets into metallized pellets under the condition of high temperature (over 1200 ℃) in the furnace. The temperature of the metallized pellets at the discharge port of the rotary hearth furnace is as high as about 1000 ℃, and a rotary cylinder cooler is usually adopted to cool the metallized pellets for convenient storage and transportation. In large-scale rotary hearth furnace engineering, the rotary cylinder cooling machine is long (more than 25 m), heavy (more than 80 t), and the requirement on installation accuracy is very high. At present, the construction technology of the heavy rotary cylinder cooling machine is rarely researched.

Disclosure of Invention

The invention aims to overcome the defects and provide a safe and efficient method for installing the rotary cylinder cooling machine, which can ensure the precision requirement.

In order to achieve the above object, the present invention is realized by:

a method for installing a heavy rotary cylindrical cooler includes

Step 1, construction preparation:

checking the parts of the equipment, preparing to install relevant machine tool materials, building an assembly platform of each section of the cylinder body, and retesting and handing over the equipment foundation;

step 2, measuring and positioning;

drawing a central target plate and an elevation datum point arrangement diagram according to the construction drawing and the measurement control network, and determining a central line of the central target plate, a transverse center distance between foundations and an elevation datum line according to the arrangement diagram to be used as a datum for mounting the cylindrical cooling machine;

step 3, riding wheel installation:

sequentially assembling the supporting wheels and the top seats according to a drawing, controlling the deviation of the longitudinal center line, the deviation of the transverse center line and the play quantity of two sides of the supporting wheels, and the relative inclination and elevation deviation of the two groups of supporting wheels at the head part and the tail part in the process, grouting the foundation bolt holes to be about 200-250mm away from the top surface of the foundation after the supporting wheels are installed and adjusted, and screwing nuts for fixing after a health-preserving period is achieved;

step 4, installing a catch wheel:

the method comprises the following steps that (1) preliminary installation of a catch wheel is carried out before barrel hoisting, after barrel hoisting alignment is carried out, the offset of the axis of the catch wheel to the central line of a rolling ring is adjusted to be opposite to the rotation direction of the barrel, and the mounted catch wheel is in uniform contact with the rolling ring;

step 5, assembling the cylinder body;

on the assembly platform, all sections of the cylinder are assembled, 16 square iron plates with the length of 100-; after the central verticality and the joint misalignment of the sections of the cylinder are adjusted, the cylinder is welded; manually welding the inner part of the cylinder to seal the bottom, automatically welding and filling the outer part of the cylinder, and after the cylinder is welded, checking the distance between the width center of the belt and the width center of the riding wheel to meet the cold size on a drawing;

step 6, positioning the cylinder;

after the sections of the cylinder and the front and rear end wheel belts are assembled, welding a stop block, and hoisting the cylinder in place by using a large hoisting machine;

step 7, installing a transmission device;

before installation, the spring plate and the inner ring of the gear are cleaned, dry oil is smeared on the interface surface of the gear after cleaning, and after the cylinder is hoisted in place, a transmission device is immediately installed and temporarily fixed;

wherein the content of the first and second substances,

step 2, after the transverse spacing between the foundations is determined, pre-adding a certain thermal expansion amount according to the actual size between the two wheel belts, calculating the size of the oblique size and the size of the horizontal spacing of the two-gear supporting device, and correcting the size on the drawing;

in the step 3, when the riding wheel is installed, the inclination between the riding wheel and the transmission support base and the horizontal plane is controlled to be 1.5%;

step 5, measuring and aligning the time of the cylinder assembly before sunrise, and welding the cylinder before sunrise or after sunrise to prevent the cylinder from deforming due to heating and causing influence on the assembly pair and welding; when one surface of the cylinder body is inevitably subjected to heat radiation, asbestos plates are required to carry out heat insulation protection;

in the step 6 and the step 7, the barrel body and the large gear need to be coiled and rotated when being aligned, at the moment, a steel wire rope is wound on the barrel body, and then the barrel body is coiled and moved by a transmission device or a winch to be aligned and welded.

The method reasonably splits the heavy rotary cylinder cooler and divides the heavy rotary cylinder cooler into sections, so that the method for installing the heavy rotary cylinder cooler with simple and reasonable process is developed, the cylinder cooler is efficiently installed in place, the installation process is safe and reliable, the method is particularly suitable for the construction of various types of cylinder coolers matched with a rotary hearth furnace, and the practicability is high.

Detailed Description

The invention is further illustrated by the following specific examples.

A method for installing a heavy rotary cylindrical cooler includes

Step 1, construction preparation:

checking the parts of the equipment, preparing to install relevant machine tool materials, building an assembly platform of each section of the cylinder body, and retesting and handing over the equipment foundation;

step 2, measuring and positioning;

drawing a central target plate and an elevation datum point arrangement diagram according to the construction drawing and the measurement control network, and determining a central line of the central target plate, a transverse center distance between foundations and an elevation datum line according to the arrangement diagram to be used as a datum for mounting the cylindrical cooling machine;

step 3, riding wheel installation:

sequentially assembling the supporting wheels and the top seats according to a drawing, controlling the deviation of the longitudinal center line, the deviation of the transverse center line and the play quantity of two sides of the supporting wheels, and the relative inclination and elevation deviation of the two groups of supporting wheels at the head part and the tail part in the process, grouting the foundation bolt holes to be about 200-250mm away from the top surface of the foundation after the supporting wheels are installed and adjusted, and screwing nuts for fixing after a health-preserving period is achieved;

step 4, installing a catch wheel:

the method comprises the following steps that (1) preliminary installation of a catch wheel is carried out before barrel hoisting, after barrel hoisting alignment is carried out, the offset of the axis of the catch wheel to the central line of a rolling ring is adjusted to be opposite to the rotation direction of the barrel, and the mounted catch wheel is in uniform contact with the rolling ring;

step 5, assembling the cylinder body;

on the assembly platform, all sections of the cylinder are assembled, 16 square iron plates with the length of 100-; after the central verticality and the joint misalignment of the sections of the cylinder are adjusted, the cylinder is welded; manually welding the inner part of the cylinder to seal the bottom, automatically welding and filling the outer part of the cylinder, and after the cylinder is welded, checking the distance between the width center of the belt and the width center of the riding wheel to meet the cold size on a drawing;

step 6, positioning the cylinder;

after the sections of the cylinder and the front and rear end wheel belts are assembled, welding a stop block, and hoisting the cylinder in place by using a large hoisting machine;

step 7, installing a transmission device;

before installation, the spring plate and the inner ring of the gear are cleaned, dry oil is smeared on the interface surface of the gear after cleaning, and after the cylinder is hoisted in place, a transmission device is immediately installed and temporarily fixed;

wherein the content of the first and second substances,

step 2, after the transverse spacing between the foundations is determined, pre-adding a certain thermal expansion amount according to the actual size between the two wheel belts, calculating the size of the oblique size and the size of the horizontal spacing of the two-gear supporting device, and correcting the size on the drawing;

in the step 3, when the riding wheel is installed, the inclination between the riding wheel and the transmission support base and the horizontal plane is controlled to be 1.5%;

step 5, measuring and aligning the time of the cylinder assembly before sunrise, and welding the cylinder before sunrise or after sunrise to prevent the cylinder from deforming due to heating and causing influence on the assembly pair and welding; when one surface of the cylinder body is inevitably subjected to heat radiation, asbestos plates are required to carry out heat insulation protection;

in the step 6 and the step 7, the barrel body and the large gear need to be coiled and rotated when being aligned, at the moment, a steel wire rope is wound on the barrel body, and then the barrel body is coiled and moved by a transmission device or a winch to be aligned and welded.

The method reasonably splits the heavy rotary cylinder cooler and divides the heavy rotary cylinder cooler into sections, so that the method for installing the heavy rotary cylinder cooler with simple and reasonable process is developed, the cylinder cooler is efficiently installed in place, the installation process is safe and reliable, the method is particularly suitable for the construction of various types of cylinder coolers matched with a rotary hearth furnace, and the practicability is high.