风机轴承座磨损如何维修? 风机是根据动能转换为势能的原理，利用高速旋转

How to repair the wear of the fan bearing seat? The <br><br>fan is based on the principle of converting kinetic energy into potential energy. The high-speed rotating impeller accelerates the gas, then decelerates, changes the flow direction, and converts the kinetic energy into potential energy (pressure). In a single <br><br>-stage centrifugal fan, the gas enters the impeller from the axial direction, when the gas flows through the impeller, it changes to radial direction, and then enters the diffuser. In the diffuser, the gas changes the flow direction and the tube <br><br>passage sectional area increases airflow decelerated, this deceleration effect convert the kinetic energy into pressure energy. The increase in pressure mainly occurs in the impeller, followed by the expansion process. In the multi-stage from the <br><br>center of the fan, allows air flow into the next with refluxing impeller, generating a higher pressure. <br><br>1. The main reasons for the wear of the fan bearing room: <br><br>1) The bearing lacks lubrication, and the bearing room is worn due to bearing damage due to high operating temperature; <br><br>2) Dimensional tolerance, due to relative movement and wear due to the gap between the bearing and the bearing room <br><br>3) The axial movement of the bearing, the bearing gland is not compressed or the size of the bearing chamber is too large, so the bearing cannot be positioned, and the axial movement of the fan causes wear and tear during operation. <br><br>2. The traditional repair process is <br><br>aimed at the wear of the bearing room. The traditional online process repair program has the following categories: <br><br>(1) insert non-standard sleeves (2) pockmarking, directly assemble the bearings (3) replace the <br><br>insert non-standard sleeves and <br><br>insert the non-standard sleeves The off-line machining process makes it difficult to implement long-term repairs for important equipment such as dust fans and shutdowns, and companies generally do not adopt this technology. <br><br>The <br><br>repair process of pitting and pitting is an emergency measure, and it is only limited to occasions with very slight wear. After the repair, the fit between the bearing inner ring and the shaft is only point contact, so under heavy <br><br>load during operation , the pitting It is extremely easy to produce fatigue and wear, and the service life is short, which can only be a temporary emergency effect. <br><br>Replacement of <br><br>new parts is a very simple method of treatment, which is characterized by a relatively simple and convenient measure for small equipment or parts, but for large equipment, complicated disassembly, and cost<br><br>High equipment is generally difficult to implement and the procurement cycle of parts is long, so it is difficult for enterprises to wait for continuous production. <br><br>Therefore, when the bearing seat (chamber) wears out, what kind of repair process to use becomes a big problem. Now, an emerging process technology-carbon nanopolymer technology, is emerging at the <br><br>historic moment, which just solves this problem in process repair. Block. <br><br>Soray carbon nanopolymer material repair technology field application case A <br><br>steel centrifugal fan reconstruction project, during the commissioning process, the bearing room was not filled with lubricating oil, causing bearing sintering, and at the same time causing bearing room wear, wear size width 120mm depth <br><br>1-2mm Model 6238. The following is the repair of the bearing housing (chamber) of the dust collector using carbon nanopolymer repair technology.

风机轴承座磨损如何维修? <br><br>风机是根据动能转换为势能的原理，利用高速旋转的叶轮将气体加速，然后减速、改变流向，使动能转换成势能（压力）。在单<br><br>级离心风机中，气体从轴向进入叶轮，气体流经叶轮时改变成径向，然后进入扩压器。在扩压器中，气体改变了流动方向并且管<br><br>道断面面积增大使气流减速，这种减速作用将动能转换成压力能。压力增高主要发生在叶轮中，其次发生在扩压过程。在多级离<br><br>心风机中，用回流器使气流进入下一叶轮，产生更高压力。<br><br>1.风机轴承室磨损的主要原因：<br><br>1）轴承缺少润滑，由于工作温度较高，造成轴承损坏而磨损轴承室；<br><br>2）尺寸配合公差，由于轴承与轴承室之间存在间隙造成相对运动而磨损<br><br>3）轴承轴向窜动，轴承压盖未压紧或轴承室尺寸过大造成轴承无法定位，风机运行时造成轴向窜动而磨损。<br><br>2．传统修复工艺<br><br>针对于轴承室磨损，传统在线工艺修复方案有以下几类：<br><br>（1）镶非标套（2）打麻点，直接装配轴承（3）更换<br><br>镶非标套<br><br>镶嵌非标套，必须下线机加工处理，对于除尘风机等重要设备难以实施停机停产的长时间修复，企业一般也不会采纳此技术。<br><br>打麻点<br><br>打麻点修复工艺是一种应急措施，且仅限于磨损非常轻微的场合，修复后轴承内圈和轴的配合仅为点接触，所以在运行过程中大<br><br>负荷的情况下，麻点极易产生疲劳磨损，使用寿命短，只能是临时应急作用。<br><br>更换<br><br>更换新部件是很简单的处理方法，其特点是对于小型设备或部件是比较简单方便的措施，但对于设备庞大，拆卸复杂、造价成本<br><br>高的设备，一般难以实施并且部件的采购周期长，企业连续生产难以等待。<br><br>因此，轴承座（室）发生磨损时，采用怎样的修复工艺成为一个大问题，现在，一种新兴的工艺技术——碳纳米聚合物技术，正<br><br>应运而生，刚好解决了工艺修复上的这块短板。<br><br>索雷碳纳米聚合物材料修复技术现场应用案例<br><br>某钢铁离心风机改造工程，在调试过程中轴承室未加注润滑油造成轴承烧结，同时造成轴承室磨损，磨损尺寸宽度120mm深度<br><br>1-2mm，轴承型号6238。以下是利用碳纳米聚合物修复技术进行的除尘机轴承座（室）进行的修复。

How to repair the wear of fan bearing seat?<br>According to the principle of converting kinetic energy into potential energy, the fan uses a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, so that the kinetic energy can be converted into potential energy (pressure). In single<br>In the stage of centrifugal fan, the gas enters the impeller from the axial direction, changes to the radial direction when passing through the impeller, and then enters the diffuser. In the diffuser, the gas changes the flow direction and the tube<br>The increase of the cross-section area of the tunnel slows down the air flow, which converts kinetic energy into pressure energy. The increase of pressure mainly occurs in the impeller, followed by the expansion process. At multi-level separation<br>In the core fan, a reflux device is used to make the air flow into the next impeller to generate higher pressure.<br>1. Main causes of fan bearing chamber wear:<br>1) The bearing is lack of lubrication, because of the high working temperature, the bearing is damaged and the bearing chamber is worn;<br>2) Dimensional fit tolerance, wear due to relative movement caused by clearance between bearing and bearing housing<br>3) The axial movement of the bearing, the bearing gland not pressed or the bearing chamber size is too large to locate the bearing, and the axial movement and wear caused by the fan operation.<br>2. Traditional repair process<br>According to the wear of bearing chamber, there are several kinds of traditional on-line process repair schemes as follows:<br>(1) Insert the non-standard sleeve (2) and make pockmarks, and directly assemble the bearing (3) for replacement<br>Insert non-standard sleeve<br>Inlaid with non-standard sleeve, it must be processed offline. For important equipment such as dust removal fan, it is difficult to implement long-term repair of shutdown, and enterprises generally will not adopt this technology.<br>Pitting<br>The repair process of pitting is an emergency measure, and it is only limited to the occasion of very slight wear. After the repair, the coordination between the inner ring of bearing and shaft is only point contact, so it is large in the operation process<br>Under the condition of load, the pitting is easy to produce fatigue wear and short service life, which can only be used as a temporary emergency.<br>replace<br>Replacement of new parts is a very simple method, which is characterized by simple and convenient measures for small equipment or parts, but for large equipment, complex disassembly and cost<br>High equipment is generally difficult to implement and the procurement cycle of parts is long, so it is difficult for enterprises to wait for continuous production.<br>Therefore, when the bearing housing (chamber) is worn, how to use the repair process becomes a big problem. Now, a new technology, carbon nano polymer technology, is<br>At the historic moment, it just solved the short board in the process of repairing.<br>On site application of soray carbon nano polymer repair technology<br>During the commissioning of a centrifugal fan renovation project, the bearing chamber was not filled with lubricating oil, which resulted in the sintering of the bearing chamber and the wear of the bearing chamber. The wear dimension was 120mm deep<br>1-2mm, bearing model 6238. The following is the repair of bearing seat (chamber) of dust remover by carbon nano polymer repair technology.<br>