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燃气热风炉安装过程中需注意事项

2018-12-11 19:00:31 扬中市乐夫装饰材料经营 阅读

热风炉基础的确定应根据当地土质,参考厂家提供的基础图由土建部门重新设计。热风炉基础达到强度后,应按热风炉图纸进行检查及验收,并划出热风炉整体的三条基准线:a、纵向基准线——锅筒中心或燃烧设备中心。b、横向基准线——链条炉排前轴中心或出渣机中心线。c、标高基准线——可以在基础四周选有关的若干地点分别作标记,各标记间的相对偏移不应超过1mm。炉就位。组装热风炉先将下部就位后,再组装上部大件,上下两组合部需找正垫牢,内外应作两次浇注。安装位置尺寸偏差和检验方法按GB50273《热风炉安装工程施工及验收规范》执行。

The foundation of hot blast stove should be redesigned by civil engineering department according to the local soil quality and referring to the basic map provided by the manufacturer. After the foundation of hot blast stove reaches its strength, it should be checked and accepted according to the drawing of hot blast stove, and draw out three baselines of the whole hot blast stove: a. Longitudinal baseline - boiler drum center or combustion equipment center. B. Transverse datum line - the center of the front axle of chain grate or the center line of slag discharger. C. Elevation datum line - markers can be selected at several locations around the base, and the relative deviation between markers should not exceed 1 mm. The furnace is in position. After the lower part of the hot blast stove is put in place, the upper part of the stove is assembled. The upper and lower parts need to be aligned and cushioned firmly, and the inner and outer parts should be poured twice. Installation position and dimension deviation and inspection method shall be carried out in accordance with GB50273 Code for Construction and Acceptance of Hot Stove Installation Engineering. (二)热风炉的吊装,在吊装时,应该在锅筒吊耳上起吊热风炉整装大件,使热风炉底座与地基上预画的基准线重合。热风炉与地基的纵向中心线,偏差不大于3毫米,且用线锤校正锅筒中心的倾斜度,允许锅筒中心倾斜不大于5毫米,否则要用垫铁在底座与地基交界处垫平。

(2) When hoisting a hot blast stove, a large part of the hot blast stove should be hoisted on the drum hoisting ear so that the base of the hot blast stove coincides with the pre-drawn datum line on the foundation. The deviation between the vertical center line of the hot blast stove and the foundation is not more than 3 mm, and the inclination of the center of the pot drum is corrected by a line hammer. The inclination of the center of the pot drum is allowed to be less than 5 mm. Otherwise, the pad iron should be used to pad the boundary between the base and the foundation.

(三)热风炉管网安装注意

(3) Attention to installation of hot blast stove pipe network

(1)、给水管路安装要求

(1) Installation requirements of water supply pipelines

备用水池的最高水位一般要求尽可能在热风炉正常水位线以下,以免停炉时,给水流入热风炉而造成下次起动时要大量排水。在水池出口处(即给水管路入口)应装设钢丝滤网。

The maximum water level of standby pool is generally required to be below the normal water level of hot blast stove as far as possible, so as not to cause a large amount of drainage when the stove is shut down due to the water flowing into the hot blast stove during the next start-up. Steel wire filters shall be installed at the outlet of the pool (i.e. at the entrance of the water supply pipeline).

(2)、主蒸汽管路安装要求

(2) Installation requirements for main steam pipelines

主蒸汽管引出段直段应大于0.5米,弯曲半径应为管子直径的4-5倍,管路最低处应装疏水阀以防止管路水击,同时要进行可靠保温。

The straight section of the main steam pipe should be greater than 0.5 meters, the bending radius should be 4-5 times the diameter of the pipe, and traps should be installed at the lowest part of the pipeline to prevent water hammer in the pipeline, and reliable heat preservation should be carried out at the same time.

(3)、安全阀安装要求

(3) Safety Valve Installation Requirements

安全阀应在水压试验后安装,安全阀应装排汽管,将排汽管导向热风炉房外安全处,排汽管上不允许装设阀门。

Safety valves should be installed after water pressure test. Safety valves should be equipped with exhaust pipes. The exhaust pipes should be directed to the safety outside the hot blast stove. Valves should not be installed on the exhaust pipes.

(4)、水位表的安装

(4) Installation of Water Level Meter

水位表下部泄水管必须接入安全之处,水位表考克旋转灵活,不得漏水,水位表处必须安装照明设备,便于观察。

The drain pipe of the lower part of the water level meter must be connected to the safe place. The cock of the water level meter rotates flexibly and can not leak water. Lighting equipment must be installed at the water level meter for easy observation.

(5)、压力表的安装

(5) Installation of pressure gauges

装置压力表时应使刻度盘垂直,压力表刻度应画红线以示热风炉最高允许压力,压力表旋塞旋转灵活,不得漏水,输水畅通,压力表禁止保温。

When installing pressure gauge, the dial should be vertical. The red line should be drawn to indicate the maximum allowable pressure of hot blast stove. The pressure gauge cock rotates flexibly. It is not allowed to leak water, and the water conveyance is smooth. Pressure gauge is not allowed to keep warm.

(四)热风炉烟囱安装要求,烟囱在吊装时,烟囱要直,其水平方向引出长度不应过长,一般小于5米,烟囱高度应符合有关国家标准的规定。烟囱要加防雨帽,烟囱的重量不应直接落在热风炉主机烟囱接管上。

(4) Installation requirements for chimneys of hot blast stoves. When hoisting chimneys, the chimneys should be straight. The horizontal direction of the chimneys should not be too long. Generally, the length of the chimneys should be less than 5 meters. The height of the chimneys should meet the requirements of relevant national standards. Chimneys should be equipped with rain caps. The weight of chimneys should not fall directly on the main chimney nozzle of hot blast stove.

(五) 燃烧系统的安装:1、按照燃烧系统控制线路图将电源线,控制信号线与电控线相连接,应装设可靠的点火程序和熄火保护装置。燃烧程序控制器提供一组独立的启停控制触点。可配制各种燃烧器,启停控制继电器回路串有一个10A的保险丝,启停控制继电器可接燃烧器的启停控制端,也可直接控制燃烧器的电源。全自动控制器开启后既不断的对压力传感器、水位电源、燃油、燃气压力设定值进行检测。时刻对压力传感器、水位电源、燃油、燃气和自身电路进行检测,发现问题立即报警并熄火停炉保护,控制器自动显示故障点,机内发出报警声响。

(5) Installation of the combustion system: 1. Connect the power supply line and control signal line with the electric control line according to the control circuit diagram of the combustion system, and install reliable ignition program and flameout protection device. The combustion program controller provides a set of independent start-stop control contacts. All kinds of burners can be made up. The start-stop control relay circuit has a 10A fuse. The start-stop control relay can connect the start-stop control end of the burner and directly control the power supply of the burner. After the automatic controller is opened, the pressure sensor, water level power supply, fuel and gas pressure setting values are continuously tested. The pressure sensor, water level power supply, fuel oil, gas and their own circuits are tested at all times. When problems are found, the alarm is immediately given and the furnace is shut down for protection. The controller automatically displays the fault point and the alarm sound is emitted inside the machine.



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